eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
1
18
10.21608/jsrs.2018.12747
12747
Original Article
Multi-Functional Finishing of WoolenFabric
Wafaa El-Sayed
1
Samiha Abo El-Ola
2
Naglaa AElsayed
3
Dina . Tawila
dina.tawila@women.asu.edu.eg
4
1Textile and Clothing Department, Faculty of Women for Arts, Science, and Education, Ain Shams University, Cairo, Egypt
National Research Centre, Textile Research Division, El Buhouth St., Dokki, Cairo, Egypt
Textile and Clothing Department, Faculty of Women for Arts, Science, and Education, Ain Shams University, Cairo, Egypt
Textile and Clothing Department, Faculty of Women for Arts, Science, and Education, Ain Shams University, Cairo, Egypt
The improvement of the fabric properties considers the most important reasons for textile functionalization.The present study focuses onone finishing bath for imparting durable multifunctional properties such aswet crease recovery angle, antibacterial andultraviolet (UV) protection to wool fabrics. Polyurethane (PU) and zinc oxide (ZnO) mixture finishing bath were selected to treat wool fabric at the different concentrations of the finishing agents as well as the curing temperatures and curing times were studied. The results revealed that the finished wool fabric have a high bacterial reduction percent against two tested bacteria Gram negative bacteria (Escherichia coli ) and Gram positive bacteria (Staphylococcus aureus) in addition to enhance the wet crease recovery even after twenty washing cycles.The surface of treated wool fabrics was characterized byScanning Electron Microscope (SEM) and Electron Dispersion Emission X-ray (EDX).Also the effectof the treatment on physico-mechanical propertieswas evaluated. The treated wool fabrics gave an excellent protection against the UV radiation. The stiffness, the resistance to tear, air permeability and wettabilityincreased after the treatment of wool fabrics with PU/ZnO and there isn’t a significant change in the tensile strength. Effect of PU,ZnO and their mixture on the dyeing properties of wool fabric was studied as well as the colorfastness of dyed fabrics.
https://jsrs.journals.ekb.eg/article_12747_e8866391d4b1085fa92a897782033a4f.pdf
wool
polyurethane
Zinc Oxide
Wet crease recovery angle (WCRA)
Antibacterial
Ultraviolet protection (UPF)
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
19
32
10.21608/jsrs.2018.12748
12748
Original Article
Many Types of Stability of Abstract First and Second Order Linear Dynamic Equations on Time Scales
Alaa Hamza
hamzaaeg2003@yahoo.com
1
Gamal . Ismail
gam_ismail@yahoo.com
2
Dina Ahmed
dina.ahmed234@yahoo.com
3
Department of Mathematics, Faculty of science, University of Jeddah, Jeddah, 21589, Saudi Arabia Cairo University, Department of Mathematics, Giza, Egypt
Department of Mathematics, Faculty of Girls, Ain Shams University, Cairo, Egypt
Department of Mathematics, Faculty of Girls, Ain Shams University, Cairo, Egypt
In this paper we investigate sufficient conditions for many types of stability of both of the abstract first order linear dynamic equations on time scales of the form
and the second order linear dynamic equations of the form
Where , the space of all bounded linear operators from a Banachspace 𝕏 into itself, and is rd–continuous from a time scale 𝕋to 𝕏. Some givenillustrative examples show the applicability of the main results.
Mathematics Subject Classifications:26E70, 34N05, 34K20, 39A30.
https://jsrs.journals.ekb.eg/article_12748_942a6b30bf6b1f09d8fe472ff8718417.pdf
Time scales
Linear dynamic equations
Stability theory
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
33
58
10.21608/jsrs.2018.12750
12750
Original Article
Comparative studies on the effect of aspartame (artificial sweetener) and stevia (natural sweetener) on liver of male albino rat
N. El-Shinnawy
1
S. Abd Elmageid
2
hadeer Abd Elhamied
hadeer.mohsen1@hotmail.com
3
Department of Zoology, Women College for Arts, Science and Education, Ain shams university, Egypt.
Department of Zoology, Women College for Arts, Science and Education, Ain shams university, Egypt.
Department of Zoology, Women College for Arts, Science and Education, Ain shams university, Egypt.
Caloric sweetener sucrose is an essential component of modern diet. However sucrose diet has an adverse effect on body weight and is associated with medical complications. So, substituting sucrose with low calorie sweeteners either synthetic as aspartame or natural as stevia is an efficacious weight management strategy. In the present investigation, total numbers of 64 albino rats were divided into four groups: the first group served as control receiving distilled water. The second group represented the sucrose group receiving 10 % sucrose solution (weight by volume). The third group served as aspartame group receiving aspartame (75 mg/kg body weight). The fourth group represented stevia group and received stevia (40 mg/kg body weight). Rats were subjected to different experimental regimens for two durations, short duration (30 days) and long duration (90 days). Histological investigation of liver sections from aspartame treated rats revealed fatty degeneration, necrosis of hepatic cells, dilatation and congestion of the central blood vessels with distortion of normal lobular architecture with increase in collagenous fibers while stevia treatment illustrated preserved normal hepatic pattern. Histochemical staining of Best Carmine stain and bromophenol blue in liver tissue revealed significant decrease in glycogen content and protein content respectively in liver aspartame group followed by sucrose group. On the other hand, image analysis of liver sections stained with Sudan III demonstrated significant elevation in fat content in sections from aspartame treated group followed by sucrose group when compared to control group. Stevia administration revealed no histological or histochemical changes in the liver tissue sections compared to control group.
https://jsrs.journals.ekb.eg/article_12750_05e80c2150ff6a4ef70d32cf4392c139.pdf
sucrose%
Aspartame
Stevia
histopathology
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
59
65
10.21608/jsrs.2018.12754
12754
Original Article
Role of Rutin on Acetaminophine Induced Hepatotoxicity in Adult Male Rats
Walaa El-Nahrawy
walaa_yao@yahoo.co.uk
1
Fatma Abu Zahra
2
Rabha EL-Dab
3
Zoology Department, Women’s College for Arts, Science and Education – Ain Shams University, Egypt
2Molecular Biology and Tissue Culture, Faculty of Medicine, Medical Research Center, Ain Shams University. Cairo, Egypt
Zoology Department, Faculty of Science, Omar AL-Moukhtar University.EL-Beida,Libya.
The present study was designed to investigate the effect of rutin on over dose acetaminophen –induced hepatotoxicity with overdose in rats. Adult male albino rats were divided into four groups. Group 1 served as control and group2: rats received rutin .Hepatotoxicity where received induced in groups 3&4,where group 3 rats were given acetaminophen (750mg/kg b.w) every 72h over a period of 21 days then left for 30 days without any treatment .Group 4: rats receiving dose of acetaminophen for 21 days (750mg/kg b.w) every 72 h then treated orally with rutin 25mg/kg b.w daily for 30 day.
A significant increase in the activities of liver markers enzymes, serum aminotransferase, γ-glutamyl transpeptidase , lipid peroxidation (MDA) and lipid profile and a decrease in the activities of superoxide dismutase(SOD).Rutin supplementation after acetaminophen treatment significantly decreased the levels of liver markers enzymes, lipid profile was observed and MDA while, significant elevated in the activity of liver SOD was recorded when compared with control group .
https://jsrs.journals.ekb.eg/article_12754_a8424c4c2fd9d277a12a28dfa81e0b93.pdf
Acetaminophine
Hepatotoxicity
Rutin
liver markers enzymes
Lipid profile
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
68
84
10.21608/jsrs.2018.12756
12756
Original Article
Effect of Simvastatin on Male Albino Rats, Cytogenetic and Histochemical Studies
Rokaya Shalaby
1
Laila Rashed
2
Fatma Foda
3
Afaf Kamel
4
Rana Adel
ranona.3lwany@gmail.com
5
1. Department of Zoology, Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo, Egypt.
2. Department of Biochemistry, Faculty of Medicine, Cairo University, Cairo, Egypt.
1. Department of Zoology, Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo, Egypt.
Department of Zoology, Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo, Egypt.
1. Department of Zoology, Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo, Egypt.
Simvastatin belongs to statins drugs that are used globally for lowering blood cholesterol level in cardiovascular patients. Simvastatin can be considered as life threatening agent, since prolonged usage may cause myotoxicity. Materials & methods: The present study was performed on 20 adult male rats which were divided into: Group I which was the control group that did not receive any treatments, and Group II which was the treated group that received 80 mg/kg b.wt/day of simvastatin for 46 days. All rats were submitted to bone marrow collection for the cytogenetics tests and gastrocnemoius muscles’ biopsied were taken for the histochemical tests. Results: statistical analysis showed a non-significant increase in the mean of chromosomal aberrations (CAs) in the treated rats’ cells comparing to the control samples. On the other hand, an observed non-significant decrease in the mean of total proteins (TP) content in rats’ gastrocnemius muscles of Group II when compared to the control group. Whereas, noticed significant reduction in the mean of glycogen (Glyc.) content in rats’ gastrocnemius muscles of the same group when compared to the control group. Conclusion: Simvastatin may lead to an increase in the incidence of (CAs) in bone marrow cells, and determination of TP and Glyc. content in skeletal muscle biopsies can be considered as indicators for muscle necrosis incidence. Recommendations: Simvastatin has to be prescribed carefully in patients suffering from hypercholesterolemia, precautions have to be taken into consideration since it may affect skeletal muscles’ health and lead to muscle toxicity on the short or long run of usage.
https://jsrs.journals.ekb.eg/article_12756_6aba1ce3f2e8e7b3eece68ce1b4248a8.pdf
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
85
107
10.21608/jsrs.2018.12759
12759
Original Article
The potential role of melatonin on bone marrow mesenchymal stem cells therapy in pancreatic tissue of streptozotocin-induced diabetic rats.
Shadia Kadry
1
Mai El-Dakdoky
2
Laila Rashid
3
Nawal Zakaria
4
Marwa Tarek
meropinky87@gmail.com
5
department of zoology, faculty of women for art,science and education, Ain shams university, cairo, egypt
department of zoology, faculty of women for art,science and education, Ain shams university, cairo, egypt
DEPARTMENT OF ZOOLOGY, FACULTY OF WOMEN FOR ART,SCIENCE AND EDUCATION, AIN SHAMS UNIVERSITY, CAIRO, EGYPT
DEPARTMENT OF ZOOLOGY, FACULTY OF WOMEN FOR ART,SCIENCE AND EDUCATION, AIN SHAMS UNIVERSITY, CAIRO, EGYPT
DEPARTMENT OF ZOOLOGY, FACULTY OF WOMEN FOR ART,SCIENCE AND EDUCATION, AIN SHAMS UNIVERSITY, CAIRO, EGYPT
The present study was established to investigate the role of bone marrow mesenchymal stem cells (MSCs) and melatonin (MT), alone or in combination with each other for improvement of beta cell functions in STZ-induced diabetic rat model. Also, to evaluate the role of melatonin in increasing the efficacy of MSCs. Fifty two male albino rats (130-150g) were divided into six groups. Control: received phosphate buffer saline PBS; Melatonin group received melatonin (10 mg/kg b.wt. day for 2 months by oral intubation); Diabetic untreated group; Diabetic group treated with melatonin; Diabetic group treated with mesenchymal stem cells (MSCs) (A single intravenous injection of 3×106 cell in PBS )and Diabetic group treated with both stem cells and melatonin. Diabetes was induced by a single i.p. injection of 45mg/kg b.wt. of streptozotocin. The results showed that treatment of diabetic rats with either MSCs alone or in combination with melatonin resulted in an increase in body weight and pancreas weight. The biochemical analysis showed significant improvement in glucose, insulin, total antioxidant and malondialdehyde level in diabetic rats treated with either MSCs alone or in combination with melatonin. On the other hand, the results of imumuno-histochemical analysis showed that MSCs and/or melatonin treatment reduced the rate of inflammation and apoptosis of the Islet cells of pancreases as well as increased the rate of pancreatic cell division. Such results were indicated by a significant improvement in the level of TNF-α, IL-10, PCNA, and caspase-3 to levels very close to the control. The microscopic examination of Langerhans islands showed that treatment with MSCs either alone or in combination with melatonin resulted in an improvement in the tissue of the pancreas and reduced number of damaged beta cells. It can be concluded that stem cell therapy has a significant role in restoring the structural and functional efficiency of beta cells in the pancreas. The results also showed that co- treatment of stem cells and melatonin was more effective than stem cell alone. Such result may be due to the role of melatonin as an antioxidant in increasing the efficiency and vitality of stem cells.
https://jsrs.journals.ekb.eg/article_12759_b0861907246a10694ca4d1810a4ecde9.pdf
diabetic rats
inflammatory markers
Melatonin
Mesenchymal Stem Cells
Oxidative Stress
pancreas
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
108
122
10.21608/jsrs.2018.12760
12760
Original Article
Evaluation of cell free circulating plasma DNA in prostate cancer
Karima Sweify
1
Amal Fawzy
2
Hany El-Fayoumy
3
Nagwa Nofal
nagwa.nofal@hotmail.com
4
Women’s College for Arts, Science and Education, Ain Shams University.
National Cancer Institute, Cairo University,
Faculty of Medicine Kasr Al-Ainy, Cairo University.
Women’s College for Arts, Science and Education, Ain Shams University.
Background: Prostate cancer (PC) is the most common cancer affecting men, it accounts for 29% of all male cancer and 11% of all male cancer related deaths. DNA is normally released from an apoptotic source which generates small fragments of cell-free DNA, whereas cancer patients have cell-free circulating DNA that originated from necrosis, autophagy, or mitotic catastrophe, which produce large fragments. Aim of work: Differentiate the cell free DNA levels (CFDNA) and its integrity in prostate cancer patients and control group composed of benign prostate hyperplasia (BPH) and healthy persons. Methodology: cf-DNA levels were quantified by real-time PCR amplification in prostate cancer patients (n = 50), (BPH) benign prostate hyperplasia (n = 25) and healthy controls (n = 30) using two sets of ALU gene (product size of 115 bp and 247-bp) and its integrity was calculated as a ratio of qPCR results of 247 bp ALU over 115 bp ALU. Results: Highly significant levels of cf-DNA and its integrity in PC patients compared to BPH. Twenty-eight (56%) patients with prostate cancer had bone metastasis. ALU115 q PCR is superior to the other markers in discriminating metastatic patients with a sensitivity of 96.4% and a specificity of 86.4% (AUC = 0.981) Conclusion: ALU115 q PCR could be used as a valuable biomarker helping in identifying high risk patients, indicating early spread of tumor cells as a potential seed for future metastases.
https://jsrs.journals.ekb.eg/article_12760_422b7fb96342d923915a6c90e01d7d05.pdf
metastatic prostate cancer
Benign Prostatic Hyperplasia
circulating cell free DNA
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
123
141
10.21608/jsrs.2018.12930
12930
Original Article
Biosynthesis of Silver Nanoparticles from a New Bacterial Isolate and Their Effect on Dermatophyte Fungi
Eman El-Sayed
emmymicrobiologist@yahoo.com
1
Taher Salah
2
Sherif Husseiny
3
Nanotechnology & Advanced Materials Central Lab., Agricultural Research Center, El Gamaa St., Giza, Egypt
Nanotechnology & Advanced Materials Central Lab., Agricultural Research Center, El Gamaa St., Giza, Egypt
Microbial Biotechnology Lab., Botany Department, Faculty of Women for Art, Science and Education, AinShams University, Cairo, Egypt
Nanoparticles biosynthesis is a potential method for synthesizing of nanoparticles due to its simplicity and non-toxicity. In the present study, microorganisms were isolated from routh of poultry on nutrient agar medium. Resulted isolates were screenedfor their abilities to synthesize extracellular silver nanoparticles (AgNPs). Isolate producing the smallest AgNPswas identified by sequencing its 16S rDNA gene, and the results revealed it to be anew strain of Bacillussp., which was assigned anaccession number of KT982274. Factors affecting the nanoparticle size were optimized achieving the smallest AgNPsparticle size ~4nm bya 96h culture and incubating mixture of equal volumes of bacterial filtrate and silver nitrate solution, at 40 C, for 18 h, and pH of 7. Spherical AgNPs of 4nm were characterized by high resolution transmission electron microscopy (HR-TEM), and Fourier transform infrared spectroscopy (FT-IR) gave bands of proteins at 1442.2, and 1631.2 cm-1corresponding to bands of I and II amide, respectively. Antimicrobial effect of the produced AgNPsagainst pathogenic yeast cells showed that the Minimum inhibitory concentration(MIC) after was 132 ppm, and 265 ppm for Microsporumaudouinii and Trichophytonviolaceum respectively after 3 h of exposure. After 6 h, MIC was 8 ppm, 66 ppm, and 33 ppm for Microsporumaudouinii, Trichophytonviolaceum, and Candida albicans, respectively.
https://jsrs.journals.ekb.eg/article_12930_d8eb106b460d2bfab789eb59578e1fe4.pdf
Biosynthesis. Nanoparticles. Molecular identification. MIC. Antifungal
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
142
157
10.21608/jsrs.2018.12931
12931
Original Article
Antifungal activities of Punica granatum L. peel-compost tea for controlling damping-off disease caused by R. solani
Mona Wadi
mona_wadi@yahoo.com
1
Mona Abou El Nour
2
Zeinab, Kheiralla
3
Abdel-Wahab M.
4
Ehab, Sarhan
5
Biology Dept., Faculty of Science, Al-Azhar University-Gaza, Palestine
Botany Dept., Women's College for Arts, Science and Education, Ain Shams University
Botany Dept., Women's College for Arts, Science and Education, Ain Shams University
Agric. Microbiol. Dept., Soils, Water and Environ. Res. Inst., ARC, Giza, Egypt
Plant Pathology Research Institute, Agricultural Research Center, Giza, Egypt
Rhizoctonia solani is common fungal pathogen to lupine plants (Lupinus albus L.) causing damping-off disease resulting in serious economic losses. In vitro experiment was conducted to evaluate the efficacy of individual compost tea and pomegranate peel-compost tea prepared using water and alkaline water against R. solani. Three pomegranate types(two Palestinian and one Egyptian) were used. Greenhouse experiment was also conducted using the Palestinian sour pomegranate peel which showed a significant antifungal activity. Lupine plants were treated with compost alone or combined with pomegranate peel powder and their extracts to control lupine damping-off disease in comparison with untreated infected soil (control), and the fungicide (Rizolex-T). In vitro experiment, results showed that pomegranate peel-compost tea significantly decreased linear growth of the R. solani compared to individual compost tea. Alkaline water led to a significant reduction in the fungal growth compared to water. Under greenhouse conditions, all applied treatments significantly induced reduction in the damping-off percentage and improved the nodulation status and growth parameters compared to infested control. The maximum survived plants percentage and growth parameters of lupine plants were recorded for pomegranate peel-compost tea treatment, followed by the fungicide. Whereas the best nodulation status was achieved by the fungicide and pomegranate peel-compost tea. It could be concluded that pomegranate peel-compost tea may provide a high efficacy to pomegranate peel and compost in combination, so it might be used in a commercial scale for controlling damping-off disease.
https://jsrs.journals.ekb.eg/article_12931_64351f4df555e43f3a1c46b1ee5c14f7.pdf
Lupine
R. solani
compost
compost tea
pomegranate peels
Rizolex-T
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
158
178
10.21608/jsrs.2018.12933
12933
Original Article
Embedded Mesoporous Silica Silver Nanoparticles as potential antibacterial agent againstMultidrug-Resistant Bacteria
Sanaa Zaki
sanaasobhy_2011@yahoo.com
1
Z. Kheiralla
kheiralla@hotmail.com
2
A. Rushdy
abeerahmedr@gmail.com
3
M. Betiha
mohamed_betiha@hotmail.com
4
Hanan Abousittash
habostash@gmail.com
5
Botany Department- Faculty of Women for Arts, Science and Education Ain Shams University, AsmaaFahmy,Cairo,Egypt
1- Botany Department- Faculty of Women for Arts, Science and Education Ain Shams University, AsmaaFahmy,Cairo,Egypt
1- Botany Department- Faculty of Women for Arts, Science and Education Ain Shams University, AsmaaFahmy,Cairo,Egypt
Egypt Refining Division, Egyptian Petroleum Research Institute, Cairo,Egypte
1- Botany Department- Faculty of Women for Arts, Science and Education Ain Shams University, AsmaaFahmy,Cairo,Egypt
Many workers have paid more attention to eco-friendly mesoporous silica silver nanoparticles featuring smaller particle sizes to enhance their remarkable antimicrobial properties. A simple chemical method was developed for synthesize high valence silver nanoparticles immobilized on the mesoporoussilica nanomaterial, which showed strong antibacterial activity. Chemical reduction of silver ion has been regarded in the present work, and a reducing agent , such as hydrazine was used to promote the reduction of the silver ion – precursor. The average particle size of the synthesized mesoporous silica-silver nanoparticles (Ag/NH2-KIT-6(x)) with different concentrations of Ag (3.2 and 7.1%) calculated from Scherrer’s equation for (1 1 1)-plane were 8 and 6.5 nm respectively. The synthesized materials were characterized using X-Ray diffraction (XRD), FTIR spectra, X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM), which revealed the mesoporous silica nanoparticles.
Antibacterial activities of mesoporous silver nanoparticles against Gram- negative Pseudomonas aeruginosa(ATCC 9027) and Gram-positive Staphylococcus aureus(ATCC 43300) were found to be increased with the increasing of Ag concentration in the Ag/NH2-KIT-6(x). The maximum inhibition zone diameter when the concentration 7.1 % was used obtained against P. aeruginosaand S. aureuswith diameters of 32 and 30 mm respectively. The antimicrobial activity of mesoporousAg/NH2-KIT-6(x) was evaluated also using the MIC&MBC tests. The surface structures of both the untreated and the treated bacterial cells were examined by the aid of TEM. The treated bacterial cells were significantly changed, and major damage was observed in the outer cell membrane. In conclusion the use of AgNPs as antibacterialagentwasfoundtobetoxicagainstpathogenicbacteriaandconsidered
https://jsrs.journals.ekb.eg/article_12933_2fb288907cf3548c4aea85ba9efbf502.pdf
: Mesoporous Silica-Silver Nanoparticles
antimicrobial activity
Drug resistance
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
179
193
10.21608/jsrs.2018.12970
12970
Original Article
Biodiesel production from local isolate Penicillium commune NRC 2016
Azhaar Hussein
1
Osama, El Sayed
2
Mohsen Asker
3
Saher Mohamed
4
Sayeda, Abdelhamid
sayeda.abdelrazek@yahoo.com
5
Botany Department, University College for Women, Arts, Science and Education, Ain Shams University
Microbial Biotechnology Department, National Research Centre, Dokki, Cairo, Egypt
Microbial Biotechnology Department, National Research Centre, Dokki, Cairo, Egypt
Microbial Biotechnology Department, National Research Centre, Dokki, Cairo, Egypt
Microbial Biotechnology Department, National Research Centre, Dokki, Cairo, Egypt
Twenty five local filamentous fungi were screened for their abilities to produce lipids using Nile-red staining assay. Among the tested filamentous fungi, Penicillium commune NRC 2016for biodiesel production was selected and identified based on the morphological and molecular methods. Gas chromatography (GC) analysis of lipids by this fungus showed that, the resulted fatty acids are suitable for biodiesel production. The resulted fatty acids were 20% palmitic acid, 4.65% stearic acid, 13.77% oleic acid, 32% linoleic acid, 1.75% α-linolenic acid and 16.1% arachidonic acid. In conclusion, this work revealed the possibility of using the promising fungal strain P. commune NRC 2016 in biodiesel production.
https://jsrs.journals.ekb.eg/article_12970_19dfb8102350dd841ffa145e9bc90728.pdf
Biodiesel
Penicillium commune NRC 2016 – GC analysis
fatty acids
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
602
610
10.21608/jsrs.2018.12976
12976
Original Article
Morphological and anatomical studies on some dicot plant species collected from East Egypt desert
Tawab A.
1
Reem Sayed
2
Wafaa Said
3
Fatma Morsi
fatma.abdelnaby@women.asu.edu.eg
4
Botany department, Faculty of women for Arts, Science and Education, Ain Shams University.
Botany department, Faculty of women for Arts, Science and Education, Ain Shams University.
Botany department, Faculty of women for Arts, Science and Education, Ain Shams University.
Botany department, Faculty of women for Arts, Science and Education, Ain Shams University.
The present study included the whole plant morphology and leaf blade anatomy of four dicot species belonging to four families; Apocynaceae, Geraniaceae, Plantagonaceae and Polygonaceae collected from east Egypt desert during three seasons in 2014, 2015 and 2016. Morphologically, the results obtained show annual habit in three species but Cynanchum acutum found as perennial herb, all species have hairy surface. Stem ranged from erect inPlantago ovate and Rumex vesicarius toclimbing in Cynanchum acutum and prostrate inErodium ciconium . Anatomically, the results showed the presence of compact uniseriate epidermis, thick cuticle in all species. Trichomes varied from simple and glandular hairs in Erodium ciconium, glandular in Plantago ovate and Rumex vesicarius and absent in Cynanchum acutum. Multilayers of palisade tissue were found in all species except Cynanchum acutum. Calcium oxalate crystals were found as druses in all taxa except Plantago ovate. From the above results, morphologically as well as anatomically all studied species were found to be adapted to arid envinorment.
https://jsrs.journals.ekb.eg/article_12976_0406a561e8c8f084b468c663bc34cad6.pdf
anatomy
Morphology
Apocynaceae
Geraniaceae
Plantagonaceae & Polygonaceae
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
611
624
10.21608/jsrs.2018.12980
12980
Original Article
Molecular Diversity Analysis of Two Irradiated Potato Varieties in vitro Revealed by Random Amplified Polymorphic DNA
Ayman El-Fiki
aymana.elfiki@eaea.org.eg
1
Zakia Adam
zakiaadam123@gmail.com
2
Thoria Rashad
thoria.rashad@hotmail.com
3
Shaimaa Sobieh
ssobieh@yahoo.com
4
Amal Salah
5
National Centre for Radiation Research and Technology, Nasr City, Cairo, Egypt.
Ain Shams University, Faculty of Women for Arts, Science and Education, Cairo, Egypt.
Faculty of Women ,Ain shams university
Ain Shams University, Faculty of Women for Arts, Science and Education, Cairo, Egypt.
National Centre for Radiation Research and Technology, Nasr City, Cairo, Egypt.
Potato buds cvs. Spunta and Valor were cultured in vitro on MS solid medium supplemented with 0.2 mg -1 BAP. The resulting plantlets were irradiated with gamma radiation doses 10, 20, 30 and 40Gy. Irradiated single node pieces were transferred onto fresh MS with BAP. Plantlets survival percentage calculated after eight weeks, gamma radiation caused decrease in the survival percentage of micropropagated buds in both Spunta and Valor cultivars ranging from 91.4 % to 28.5% in cv. Spunta and 93.3% to 30.47% in cv. Valor, comparing with the values of the two non-irradiated cultivares 95.2% and 96.2% respectively. Microtubers produced from irradiated plantlets were decreased with increasing gamma radiation doses with changes in size and numbers. The estimated proline content in irradiated plantlets was increased with increasing gamma radiation dose. The genomic DNA of non-irradiated (control) in two cultivars and eight radiation treatments was amplified with 10 RAPD primers that generated 54 polymorphic bands. The highest number of genetic similarity was 0.9672 showed between irradiated plantlets with dose 20 and 30Gy in cv. Valor. However, the highest genetic distance was 0.3995 observed between irradiated plantlets with dose 20Gy in cv. Valor and 30Gy in cv. Spunta. The dendrogram generated by cluster analysis distinguished the irradiated plantlets genetically.
https://jsrs.journals.ekb.eg/article_12980_47e371c27ba9da0e3ceffcdc7060dbf1.pdf
in Vitro
polymorphism DNA
potato
RAPD
Radiation
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
194
215
10.21608/jsrs.2018.14043
14043
Original Article
An Intelligent Spelling Framework Based on Brain-Computer Interface
Yosra Abdula
1
S Abdel-Mageid
2
R. Ramadan
3
Afaf Nada
afafhero_nada@yahoo.com
4
Marwa Elshahed
5
Sarah Abdulkader
6
Physics Department, Faculty of Women for Arets, Science, and Education. Ain Shams University. Cairo. Egypt.
System Engineering and Computer Department, Faculty of Engineering. Al-azhar University. Cairo. Egypt.
Computer Engineering Department, Faculty of Engineering. Cairo University. Giza. Egypt.
Physics Department, Faculty of Women for Arets, Science, and Education. Ain Shams University. Cairo. Egypt.
Physics Department, Faculty of Women for Arets, Science, and Education. Ain Shams University. Cairo. Egypt.
Computer Science Department, Faculty of Computer and Information System. Helwan University. Cairo. Egypt.
Brain-computer Interface (BCI) aims to enhance the quality of life for all humans. Spelling is one of BCI applications that is used to type numbers, characters, words, or sentences by recording the user's brain activity. In this paper, A BCI speller framework based on converting mental activity is presented. Such framework uses Independent Component Analysis (ICA) and Auto Regressive (AR) for preprocessing and feature extraction respectively. Both of Support Vector Machine (SVM) and K-Nearest Neighbors (KNN) are utilized at the classification phase. Several experiments have been conducted by four subjects using the pre-described framework achieved high average accuracy of 94.38% for KNN with value of K=9. The performance results have shown that converting mental activity can be used as a mean for spelling applications.
https://jsrs.journals.ekb.eg/article_14043_baf7b8062a6d3ed73d2cc3469d3fcfc2.pdf
Brain-Computer Interface
Event Related Potentials (ERP)
Steady State Evoked Potential (SSEP)
and Motor Imagery (MI)
mental speller
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
227
244
10.21608/jsrs.2018.14046
14046
Original Article
Non extensive description of pp collisions at high energies
S. Abdel-Razik
shimaa_m_elrazik@hotmail.com
1
M. Abdel-Aziz
2
M. Sirag
3
Physics Department, Faculty of Women, Ain Shams University, AsmaaFahmi, Al Golf, Nasr City, Cairo-11566, Egypt
Basic Science Department ,Faculty of Computers and Information Sciences, Ain Shams University, Khalifa El-Maamon St, Cairo-11566, Egypt
Physics Department, Faculty of Women, Ain Shams University, AsmaaFahmi, Al Golf, Nasr City, Cairo-11566, Egypt
Non extensive statistics provide an excellent application in the field of high energy collisions to study the thermal properties of the produced particles. We apply the scaled Tsallis equation to study the entropy parameter as a function of transverse momentum of the produced hadrons. We applied Tsallis-Pareto to study the transverse momentum distribution of produced hadrons ( , , , ) in pp collisions at center of mass energies = 62.4 , 200 ,900 GeV and 2.7 TeV . The Pareto-Tsallisdistribution, leads to an excellent description of data on transverse momentum distribution .The parameters are almost independent from for protons and kaons and distributed around and q is increasing for pions from 1.1 to almost 1.3 at top energy . The effective temperature, increases with collisions energy we estimated for pp collisions at 2.7 TeV LHC energy. Different hadrons have different effective temperature such that heavier hadrons have higher freezout temperature.
https://jsrs.journals.ekb.eg/article_14046_5ffbe5eeb39d654d2f8c55d97c551725.pdf
Transverse momentum distribution
high energy collision
The Pareto-Tsallis distribution
Non extensive statistics
QGP
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
245
257
10.21608/jsrs.2018.14047
14047
Original Article
Interaction of Coenzyme Q10 with Dipalmitoylphosphatidylcholine Liposomes
Medhat Shafaa
1
Hossam Kareem
2
Amany Elshazly
3
Amira Dakrory
4
Maha Elsyed
mahareda83@yahoo.com
5
Physics department, Faculty of Science, Helwan University, Cairo, Egypt,
Physiological optics department, Research Institute of Ophthalmology, Giza,
Departments of Biochemistry and Pharmacology, Research Institute of Ophthalmology, Giza
Physics department, Faculty of women for arts, science and education Ain Shams University,Egypt.
Physics department, Faculty of women for arts, science and education Ain Shams University,Egypt
The goal of this study to investigate the influence of antioxidant as coenzyme Q10 on structural changes of model lipid membranes as DPPC by using Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC). The results obtained indicate that the greater effect of CoQ10 upon the incorporation into negatively charged liposomes in comparison with the other liposome formulations. The incorporated CoQ10 is probably associated with the lipid bilayers, interacted to a large extent with them, and perturbed them which results in the strong broadening and shift to lower temperature 94 °C of the major characteristic endothermic peak of pure DPPC that exists at 105 °C. The FT-IR spectra of samples showed that Incorporation of CoQ10 into neutrally, positively and negatively charged DPPC liposomes showed significant change in the frequency of the antisymmetric CH2 stretching bands in the acyl chain implying that CoQ10 create a conformational disorder within the acyl chains of phospholipids. In other words, it had significant effect on the order of the membrane.
https://jsrs.journals.ekb.eg/article_14047_556fef1718d31914861e6631cfb55ce9.pdf
Liposomes – Coenzyme Q10 – DSC – Encapsulation – FTIR
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
258
276
10.21608/jsrs.2018.14049
14049
Original Article
Effect of Gamma-Irradiation on Optical Properties of Glass Composition x mol%(Li2O) (30-x) mol%(Na2O) 65 mol%(B2O3):5 mol%(Sm2O3)
G. Rabie
gehad_rabie@yahoo.com
1
A. Ibrahim
2
A. Abdelghany
3
Ahmed Hammad
4
College of Women for Arts, Science and Education, Physics Department, Ain Shams University
College of Women for Arts, Science and Education, Physics Department, Ain Shams University
2 Physics Division, Spectroscopy Department, National Research Centre, 33 El‑Behouth St., Dokki, Cairo 12622,Egyp
Physics Division, Electron Microscope and Thin Films Department, National Research Centre,33 El‑Behouth St., Dokki, Cairo 12622, Egypt
Nominal glass compositions x mol%(Li2O) (30-x) mol%(Na2O) 65mol%(B2O3): 5mol%(Sm2O3) where x=(0, 10, 20 and 30) mol% have been prepared by the conventional quenching melt annealing technique. The optical constants (α, n, k), optical energy gap (Eg), Urbach energy tail (∆E), linear refractive index (n0), nonlinear refractive index (n2), linear optical susceptibility χ(1) and the third order of non- linear optical susceptibility χ(3) have been calculated before and after 8MRad γ- irradiation. The analysis of the absorption coefficient data revealed the existence of an allowed indirect transition both before and after γ- irradiation. It was observed that the value of optical energy gap depends on the value of lithium content (x). Eg increases from (3.15eV- 3.3eV) and from(2.93 eV -3.09eV) before and after γ- irradiation respectively when lithium content value (x) varies from 0 to 20 mol% then decreases to 3.24eV and 2.85 eV at 30 mol% of lithium content before and after γ-irradiation respectively. ΔE decreases from 0.1193 eV to 0.095 eV and from 0.565 eV to 0.401 eV with increasing lithium content from 0 to 20 mol%, then increases to 0.114 eV, 0.512 eV at 30 mol% of lithium oxide respectively before and after gamma irradiation. The linear and nonlinear optical parameters have been estimated from the obtained values of n and Eg. It was found that n0, χ(1), n2 and χ(3) vary from (2.32-2.35), (0.35- 0.363)esu., (24.1-27.71)x10-12&(1.48-1.73)x10-12esu.when lithium content value varies from 0 to 30 mol% before γ-irradiation respectively. The parameters n0, χ(1), n2 and χ(3) are found to vary from (2.37-2.63), (0.368-0.473), (29.332-71.626)x10-12& (1.846-5.001)x10-12esu.afterγ-irradiation respectively. The variation in optical band gap and Urbach energy are due to the variation in the glass structure.
https://jsrs.journals.ekb.eg/article_14049_5395e91f3bba66b2708af04244b29024.pdf
Borate Glasses
Nonlinear Optics
Optical Energy Band Gap
γ-irradiation
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
275
286
10.21608/jsrs.2018.14050
14050
Original Article
Synthesis of Zinc Oxide nanoparticles at different aging time for low cost Dye Sensitized Solar Cells
H. Zayed
1
H. Musleh
2
S. Shaat
3
N. Shurrab
4
J. Asaad
5
N. AlDahoudi
6
Physics Department, Women`s College for Art, Science, and Education, Ain Shams University, Cairo, Egypt.
Physics Department, Al Azhar University-Gaza, P.O. Box 1277, Gaza, Palestine
Physics Department, Islamic University of Gaza, P.O. Box 108, Gaza, Palestine
Chemistry Department, Al Azhar University-Gaza, P.O. Box 1277, Gaza, Palestine
Physics Department, Women`s College for Art, Science, and Education, Ain Shams University, Cairo, Egypt
Physics Department, Women`s College for Art, Science, and Education, Ain Shams University, Cairo, Egypt.
Zinc oxide nanoparticles synthesized via simple precipitation method and aged at different time were used as photoanodes of dye sensitized solar cells (DSSCs). The structural and the optical properties of the obtained zinc oxide nanoparticles were investigated. The performance of the assembled solar cells was studied and the efficiency of such cell was compared as a relation of the aging time of the ZnO nanoparticles.
https://jsrs.journals.ekb.eg/article_14050_8fd4967a456746ee523af77d3e7ed36b.pdf
Zinc Oxide
Nanoparticles
precipitation method
dye sensitized solar cell
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
287
297
10.21608/jsrs.2018.14051
14051
Original Article
Effect of Diode Power Losses on the Operation of Boost Converter System
Soha Abd El-Azeem
safaa.elghanam@women.asu.edu.eg
1
S. El-Ghanam
2
M. Ismail
3
1- Electronic Res. Lab (E.R.L)., Faculty of Women for Arst, Science, and Education, Ain Shams Univ., Cairo, Egypt.
1- Electronic Res. Lab (E.R.L)., Faculty of Women for Arst, Science, and Education, Ain Shams Univ., Cairo, Egypt.
1- Electronic Res. Lab (E.R.L)., Faculty of Women for Arst, Science, and Education, Ain Shams Univ., Cairo, Egypt.
The paper presents a study on the effect of diode power losses on the operation of 5/24.4 VDC boost converter based on MOSFET switch type STP36NF06. In this concern, a comparative study between the system performances in the discontinuous conduction mode was carried out whenever; MBRS130LT3G Schottky diode and FR101 fast recovery diode were applied. It was found that, the boost converter output voltage was 20.0 Volts with voltage ripple of 1.4 Volts, using MBRS130LT3G Schottky diode. Moreover, the output voltage reached 18.6 Volts with voltage ripple of 1.6 Volts, whenever FR101 fast recovery diode was used. On the other hand, the peak ringing voltage and parasitic ringing values at the switch node were 4.8 Volts and 454 kHz, respectively applying Schottky diode. While, their values were 8.0 Volts and 463.1 kHz applying fast recovery diode.
https://jsrs.journals.ekb.eg/article_14051_4251274b70c8a754c70088f90a69cdfa.pdf
Boost converter system
discontinuous conduction mode
MOSFET switch
Schottky diode and fast recovery diode
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
592
601
10.21608/jsrs.2018.14052
14052
Original Article
Comparison between two different methods to estimate the trace elements in some vegetables and fruits
N. Naseh
nora.fayek@women.asu.edu.eg
1
S. Hamed
2
W. Mousa
3
Faculty of women for Arts, Science and Education. Physics department, Ain Shams University
Faculty of women for Arts, Science and Education. Physics department, Ain Shams University
Faculty of women for Arts, Science and Education. Physics department, Ain Shams University
Heavy metals like Fe and Mn at low concentrations are essential metals for enzymatic activities and many biological processes. Two wet digestion methods have been applied for the determination of Iron (Fe) and Manganese (Mn) in various edible parts of some fresh vegetables and fruits. The samples were analyzed by Flame Atomic Absorption Spectrometer (AAS) and Atomic Emission Inductive Coupled Plasma spectroscopy (ICP-AES). The results obtained in this study showed that the second digestion method is more reliable for (Fe). The procedure yields precision varied between 0.4% for Mn and 1.2% for Fe.
https://jsrs.journals.ekb.eg/article_14052_d41d8cd98f00b204e9800998ecf8427e.pdf
vegetables
Fruits
trace elements
Digestion
FAAS
ICP-AES
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
298
312
10.21608/jsrs.2018.14053
14053
Original Article
Simulation Methods to Treat Some Factors Affecting Atomic Absorption measurements
Wafaa. Mousa
1
Amr. Khairat
2
Shereen. Mohamed
shereennassef4@gmail.com
3
Physics Department, Gilr’s College,*Faculty of science Ain Shams University,Cairo, Egypt
Physics Department, Gilr’s College,*Faculty of science Ain Shams University,Cairo, Egypt
Physics Department, Gilr’s College,*Faculty of science Ain Shams University,Cairo, Egypt.
Flame atomic absorption spectroscopy (FAAS) is used to quantitatively determine trace metals in the test samples. The purpose of the present study is to treat some of the factors affecting AAS measurements. Some of the factors are under the control of the operator while other factors depend on the used equipment. In the present work equipment was used with low detection limits and high sensitivity but still some factors can’t control. Using simulation methods to treat some of these measurements, obtain an estimate of the predicted concentration values for test samples. Two methods of simulation are investigated. The first simulation method is carried out by using line-of-best-fit through the experimental points using Excel programmed and using TREND function to estimate the unknown concentration directly from this calibration function. The second simulation method is based on the approximation programme which is built-in the concept of genetic programming (GP). This is carried out by the introduction of laboratory results of the known concentrations versus the absorption of known elements and finds the best curve of the approximate of each element. The results were rounded up to the laboratory results of most elements with low concentrations, the improvements of the methods were very satisfying and the results reached the imposed limits (A<0.05). Finally, a database was created for all results.
https://jsrs.journals.ekb.eg/article_14053_8090dce86eb85463ea2a4eb0087cf451.pdf
FAAS
trace element
treat factors
genetic programming
Simulation methods
atomic absorption
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
313
332
10.21608/jsrs.2018.14054
14054
Original Article
A comparison of the gamma index and dose volume histogram of patient for IMRT/VMAT with different QA systems
Yasser Ali
ysrhassan71@gmail.com
1
Kh. El Shahat
2
Hosnia Abou Zeid
3
Hoda Ashry
4
M.Sc. in Biophysics, Radiotherapy Department, El-galaa Hospital
Medical Radiation Biophysics, Faculty of Medicine, Al-Azhar University
Physics Department,Women Faculty for Arts, Science, and Education, Ain -Shams University
National Center for Radiation Research and Technology, Atomic Energy Authority
Radiotherapy has a vital part in the treatment of prostate tumor. Three-dimensional conformal radiotherapy (3D-CRT), intensity modulated radiotherapy (IMRT) and volumetric modulated arc therapy (VMAT) techniques are currently used. In this concern, the present study is a trial to shed further light on the mean differences and to note the similarity or dissimilarity between the proposed three techniques of radiotherapy for head & neck (H & N) cancer. Measurements were carried out based on two dimensional (2D) array PTW and portal dosimetry in patient with head and neck canceras tool for evaluation. Specifically, the aim of the first part was to demonstrate that quality assurance (QA) tool for IMRT and its passing rate criteria might not expect dose errors in patient. This study examines the effect of systematic positional multi-leaf collimator (MLC) bank errorson gamma (Γ) examination results used for QA of treatment technique and to assess the result of dose changes presented in dynamic multi-leaf collimator (DMLC) modeling and delivery methods on metrics for IMRT.
Twenty head and neck IMRT plans were selected for current study using the same group of dose–volume constraints. Treatment plans were created using 3D-CRT, VMAT and IMRT techniques. Homogeneity index (HI), Conformity index (CI), max. spinal cord dose, max. brainstem dose, mean parotid dose, larynx dose, oral cavity dose, and monitor units (MUs) were compared. For every patient, a group of data analysis was done for each technique and then imported to the DVH (PTW 2D array) for processing. A measured dose volume histogram metrics (DVH) was created in QA system and note the similarity to the calculated DVH from the treatment plan. Their variations due to errors related to the treatment planning system (TPS) (its algorithm for dose calculation) in addition to beam delivery.
It is clearly shown that VMAT has a little better CI whereas the volume of small doses was higher.VMAT had lesser MUs than IMRT. 3D-CRT had the lowest common MU, CI and HI. IMRT would be preferred to VMAT in head and neck radiotherapy. Also, the current study showed even if the whole of IMRT QA had high Gamma passing rates 98.3 ± 1.3% (96.7-99.7%) for “3%/3 mm” criteria, there were located significant errors in some of the calculated clinical dose metrics. This study approves that conventional IMRT QA are not a prescient warning of errors in PTV dose and OAR dose (organs at risk). The dose QA has to allow us to expect and evaluate the relation of results of gamma test and DVH for treatment technique plan.
https://jsrs.journals.ekb.eg/article_14054_251dc2805bc9bbbf06a41828bb6a763c.pdf
IMRT
head and neck cancer
TPS plan evaluation
plan QA
Gamma Index and DVH
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
216
226
10.21608/jsrs.2018.14109
14109
Original Article
Characterization of photo-neutrons produced by 150 MeV and 1 GeV electrons impinging on high Z-metallic targets for neutron resonance spectroscopy
ElTayeb ElSaady
e.elsaady@yahoo.com
1
Mustafa ElAshmawy
2
Hosnia Abu-Zeid
3
Afaf Nada
afafhero_nada@yahoo.com
4
Fatma Ragab
5
Egyptian Nuclear and Radiological Regulatory Authority, Cairo, Egypt.
Egyptian Nuclear and Radiological Regulatory Authority, Cairo, Egypt
Faculty of women for Arts, Sci. and Ed., Ain Shams University, Cairo, Egypt.
Faculty of women for Arts, Sci. and Ed., Ain Shams University, Cairo, Egypt.
Faculty of women for Arts, Sci. and Ed., Ain Shams University, Cairo, Egypt.
Monte Carlo calculations have been performed using MCNP code to study the generation, angular distribution and energy spectrum of photo-neutrons for 1 GeV and 150 MeV electron beam energies impinging on different thickness of Tungsten, Tantalum and Lead targets. It is noticed that the photo-neutron yield increases as the target thickness increases then saturates beyond an optimized thickness of the target. Moreover, the photo-neutron yield shows significant increase as the electron energy increases. At the optimized thickness, the angular distribution of photo-neutrons is found almost isotropic for 150 MeV electrons and anisotropic for 1 GeV electrons. Further, by increasing the electron energy and/or the target thickness the angular distribution is found to be forward peaked. The energy spectrum of photo-neutrons can be well described by a Maxwellian distribution for both electron energies. Such calculations can help in developing a photo-neutron source based time of flight facility (TOF) for elemental and isotopic identification via neutron resonance spectroscopy. Photo-neutron yields, angular distribution, mean energy, energy spectrum and nuclear temperature for 1 GeV and 150 MeV electron energies and different target materials are presented.
https://jsrs.journals.ekb.eg/article_14109_f57e550badcef5858c408332598e5233.pdf
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
399
418
10.21608/jsrs.2018.14112
14112
Original Article
Enhancing the biocompatibility of Sodium Membrane Electrodes by Using Chitosan-CuO and Chitosan-CuO-Heparin Composite Membranes
Ibrahim Badr
ibadr1@gmail.com
1
A. Salim
2
A. Salem
3
M. Gouda
4
Hossam Sayour
5
Chemistry Department, Faculty of Science, Ain-Shams University, Cairo, Egypt
Chemistry Department, Faculty of Science, Ain-Shams University, Cairo, Egypt
Chemistry Department, Faculty of Science, Ain-Shams University, Cairo, Egypt
Pretreatment and Finishing department, Textile Research Division, National Research Center, Cairo, Egypt
Chemistry Department, Animal Health Research Institute, Cairo, Egypt
We investigate the effect of introducing chitosan CuO-nanoparticle and heparin loading chitosan CuO nanoparticle composite membranes to PVC based sodium selective membrane electrode to enhance its biocompatibility and reduce its highly thrombogenicity. The potentiometric responses of three sets of electrodes were studied: (1) conventional PVC membrane electrode, (2) conventional PVC membrane electrode sandwiched with chitosan-CuO membrane (CH-CuO-PVC), and (3) conventional PVC membrane electrode sandwiched with chitosan-CuO-heparin membrane (CH-CuO-H-PVC). Potentiometric response characteristics of the CH-CuO-PVC and CH-CuO-H-PVC membrane electrodes (e.g., detection limit, linear range, response slope, and selectivity coefficients) were found to be comparable to that of the conventional PVC-based sodium electrodes. Biocompatibility was assessed for all membranes (PVC and CH-CuO-PVC and CH-CuO-H-PVC) through platelet adhesion protocol. SEM and platelet counts have shown that CH-CuO and CH-CuO-H have improved biocompatibility compared to the classical PVC membranes.
https://jsrs.journals.ekb.eg/article_14112_3aaea8aa0ff6f3f3d71b5c43996a46cf.pdf
Membrane electrodes
Heparin
biocompatibility
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
625
641
10.21608/jsrs.2018.14115
14115
Original Article
Catalytic Aerobic Oxidation System via Terephthalic Acid Production Using Economic and Readily Available Nanocatalyst
Ahmed Afify
ahmedsamyas@hotmail.com
1
nadia Kandile
nadiaghk@yahoo.com
2
A. Badawi
3
Sanaa Solyman
4
Mohamed Betiha
5
Egyptian Petroleum Research Institute, Nasr City, Cairo 11727, Egypt.
Chemistry Department Faculty of Women, Ain shams University,Heliopolis,Cairo,Egypt
Egyptian Petroleum Research Institute, Nasr City, Cairo 11727, Egypt
Egyptian Petroleum Research Institute, Nasr City, Cairo 11727, Egypt. AL-Ghad International College for Applied Medical Science, Kingdom of Saudi Arabia.
Egyptian Petroleum Research Institute, Nasr City, Cairo 11727, Egypt. Egypt nanotechnology center (EGNC) Cairo university, El-Shiekh Zayed, 12588, Egypt.
One of the most important commercials industrial processes is liquid phase catalytic oxidation of p-xylene by oxygen for terephthalic acid (TPA) production. A recent catalytic system used environmentally benign N-hydroxyamide as a free radical promoter rather than more hazardous bromine molecules. An economical and easily prepared heterogeneous oxidation catalyst, nanorods manganese dioxide, was synthesized by ultrasonic technique. The crystal structure and morphology of the MnO2 were confirmed by HRTEM, XRD, and N2-adsorption-desorption isotherms. The prepared MnO2 nanorods had a high aspect ratio and surface area of 300 m2 g-1. The catalytic oxidation of p-toluic acid (PTA) to terephthalic acid using MnO2 nanorods was studied under the different conditions (reaction time, catalyst dosages, reaction solvent and varied pressures and temperatures) to control the yield and selectivity toward TPA synthesis. The obtained results showed that the high yield (88.9%) and conversion (90.1%) in ethyl acetate with fixed oxygen pressure (20 atm) at 150°C.
https://jsrs.journals.ekb.eg/article_14115_fcfeb0a07b2347da332cfee93652ba2f.pdf
MnO2
nanorods
catalytic oxidation
terephthalic acid (TPA)
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
373
398
10.21608/jsrs.2018.14120
14120
Original Article
Hypoglycemic and hypolipidemic effects of dietary supplementation of plantago psyllium seeds on diabetic and/ or hyperlipidemic albino rats
Asmaa Ali
asmaaasmaaasmaa27@gmail.com
1
Zakia Abd el-kader
2
Hanaa. Abd el-fattah
3
Mai Abd el-kawi
4
Biochemistry and Nutrition Department- Women’s College, Ain Shams University, Cairo, Egypt.
Biochemistry and Nutrition Department- Women’s College, Ain Shams University, Cairo, Egypt.
Biochemistry and Nutrition Department- Women’s College, Ain Shams University, Cairo, Egypt.
Biochemistry and Nutrition Department- Women’s College, Ain Shams University, Cairo, Egypt.
This study was designed to investigate the hypoglycemic and hypolipidemic effects of plantago psyllium seeds added to diet in two different doses (0.5% and 1.0% w\w) on strepotozotocin (STZ) induced diabetic rats and/or hyperlipidemic rats. Eighty male adult albino rats were used in this study, divided into 10 groups 8 rats each. G (1): served as healthy control, G (2) was diabetic control. G (3) was hyperlipidemic control. G (4) was diabetic fed on high fat high cholesterol diet (HFHC). Gs: (5-6) diabetic rats fed on diet supplemented with plantago psyllium seeds (0.5% &1% w\w).Gs (7-8) hyperlipidemic rats fed on HFHC diet supplemented with plantago psyllium seeds (0.5% & 1% w\w).Gs (9-10) diabetic rats fed on HFHC diet supplemented with psyllium seeds (0.5% & 1% w\w). After 6 weeks, rats were sacrificed under diethyl ether anesthesia. Serum and tissue samples were collected to perform the biochemical analysis. Serum glucose, insulin, insulin resistance (HOMA-IR) and beta cell function index (HOMA-β) were measured. Moreover, Serum lipids profile including total lipid (TL), phospholipids (PL),total cholesterol (TC),triacylglycerols (TAGs),low density lipoprotein cholesterol (LDL-C),very low density lipoprotein cholesterol (VLDL-C), as well as LDL-C/ HDL-C, TC/HDL-C, TAGs/HDL-C ratios and atherogenic index (AI) were measured. Also, antioxidant status was evaluated by measuring total antioxidants capacity (TAC) level, glutathione peroxidase (GPx), glucose 6 phosphate dehydrogenase (G6PD) activities, malondialdehyde (MDA) and oxidative stress index (OSI). The results were supported with microscopic examination of pancreatic tissues. The results of this study revealed that administration of plantago psyllium seeds improve glucose homeostasis by decreasing blood glucose, increasing β-cell function, increasing serum insulin level and insulin sensitivity in STZ-induced diabetic rats. Also, plantago psyllium seeds ameliorate insulin resistance in hyperlipidemic groups by decreasing insulin level. The result of this study approved that psyllium seeds improve dyslipidemia relevant to HFHC diet and diabetes mainly through decreasing TL, PL, TC, TAGs, LDL-C, VLDL-C and increasing HDL-C. Furthermore, plantago psyllium seeds showed an important cardio protective effect through decreasing AI , TC/HDL-C,TAGs/HDL-C and LDL-C/ HDL-C ratios as a risk for coronary heart disease (CHD).The study revealed that plantago psyllium seeds has a significant antioxidant activity and can be used to protect tissue from oxidative stress as indicated in microscopic examination of pancreatic tissue showed amelioration in the appearance of cells .The result showed a significant decrease in serum MDA and OSI and a significant increase in TAC level ,GPx and G6PDactivities .The protective effect of plantago psyllium seeds is due to their antioxidant potential which represented by their rich content of dietary fibers, flavonoids, poly unsaturated fatty acids, and some polyphenols that appears to protect against reactive oxygen species (ROS).
https://jsrs.journals.ekb.eg/article_14120_18db7906aeb2f6cb8555c931e81eb2b2.pdf
STZ
Psyllium
hyperlipidemia
fiber
antioxidants
Oxidative Stress
Lipids Profile
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
641
660
10.21608/jsrs.2018.14122
14122
Original Article
Comparative Study of Water and Oil Extracts of Moringa (Moringa oleifera) Leaves on Immune Response and Hepatic Oxidative Status in Rats
Alyae Gabal
sayed_abdrahman@yahoo.com
1
Fatma, Khalil
2
Hanaa Abd-El Fattah
3
Heba Barakat
4
Biochemistry and Nutrition Department, Women’s College, Ain Shams University, Cairo, Egypt.
Biochemistry and Nutrition Department, Women’s College, Ain Shams University, Cairo, Egypt.
Biochemistry and Nutrition Department, Women’s College, Ain Shams University, Cairo, Egypt.
Biochemistry and Nutrition Department, Women’s College, Ain Shams University, Cairo, Egypt.
This study was conducted to investigate the biochemical effects of Paracetamol which chemically named as N-acetyl-p-aminophenol (APAP) high dose on experimental animals and to study the anti-inflammatory, immunomodulatory, antioxidant and hepatoprotective activity of oil (ethanolic) and aqueous (water) extracts of Moringa oleifera (M. oleifera) leaves supplementation as well as choosing the best extract. This study was carried out on eighty three male adult albino rats of Sprague-Dawely strains which were divided into eight groups, of ten animals each except APAP control group were composed of thirteen rats, all rats were fed commercial diet. Group (I): rats received a placebo 1g of 0.9% normal saline by oral intubation daily, while other groups received a high dose of APAP (1g APAP/kg body weight) daily by oral intubation to induce hepatotoxicity. Group (II): rats received APAP dose daily without any treatments. Groups (III, IV and V): rats received APAP dose and supplemented with water extract of M.olifera at three tested doses (200,300 and 400mg/Kg body weight) respectively daily by oral intubation. While groups (VI, VII and VIII), rats received APAP dose and supplemented with ethanolic extracts of M.olifera at three tested doses (200,300 and 400mg /Kg body weight) respectively daily for four weeks.
At the end of the experimental period (four weeks) rats were anesthetized using diethyl ether anesthesia after overnight fasting. Blood samples were collected from the hepatic portal vein and serum was separated for analysis. Then rats sacrificed and abdomen was opened at greater curvature as liver and spleen were removed for biochemical and microscopical examination.
The present study showed that APAP administration caused a significant increase in the level of hepatic protein carbonyl group (PCG), malondialdehyde (MDA) and nitric oxide (NO) levels. On the other hand, reduced blood glutathione (GSH) level, serum catalase (CAT), glutathione-S-transferase (GST), and glutathione reductase (GR) activities as well as serum immunoglobulins (IgG and IgM) levels were significantly decreased compared to healthy control group at (p≤0.05). The inflammatory markers like serum tumor necrosis factor alpha (TNF- α), interleukin 1 beta (IL1b) levels and myeloperoxidase (MPO) activity
Corresponding author:Sayed_abdrahman@yahoo.com
increased in APAP control group. The study revealed the toxic effect of APAP on the liver function enzymes asserum- glutamyltransferase (GT), aspartate aminotransferase (AST),
and alanine aminotransferase (ALT) activities were significantly increased in APAP control group compared to healthy control group at (p≤0.05). Administration of water or ethanolic extracts at the tested doses (200,300 and 400mg/Kg body weight of rats) daily resulted in a significant decrease in oxidative biomarkers, inflammatory markers, liver function enzymes activities and significant improvement in antioxidants levels and the immune function as compared with APAP hepatotoxicated rats at (p≤0.05).Results of this study suggested that ethanolic extracts were more effective and the highest improvements were found in group which treated with the highest dose of the ethanolic extract (400mg/kg body weight).
https://jsrs.journals.ekb.eg/article_14122_72f9a5e76d23e1078a01aeaddedb4034.pdf
Moringa oleifera
Paracetamol
Oxidative Stress
inflammation biomarkers
immunomodulatory activity
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
419
434
10.21608/jsrs.2018.14130
14130
Original Article
Influence of Nano-Silica on the Properties of High Free Lime Ordinary Portland Cements
E. Hekal
eisa_hekal@yahoo.com
1
H. El-Didamony
h.didamony80@yahoo.com
2
Abd El-Rahman Ragab
abdelrahman.ragab@lafargeholcim.com
3
Chemistry Department, Faculty of Science, Ain shams University, Cairo, Egypt
Chemistry Department, Faculty of Science, Zagazig University, Zagazig Egypt.
Quality Department, Lafargeholcim Cement, El Kattamia, El Sokhna, Suez, Egypt.
In the recent years, there is a great interest in replacing nanomaterials (NMs) in concrete structure to produce concrete with novel function and better performance. NMs are used either to replace part of cement, producing ecological profile concrete or as admixtures in cement pastes. A number of NMs such as nano silica (NS) have been explored and extensively used. This work aims to study, the effect of replacing 2, 4 and 6 mass % (NS) on physico-mechanical properties of OPC containing high CaO. The hydration behavior of cement pastes was followed by the determination of (CH) and combined water (Wn) contents with curing time. The water of consistency (W/C), setting times (IST&FST), penetration of chloride and compressive as well as flexural strengths were also estimated. The hydration products were analyzed using XRD technique. The results showed that, NS improves the hydration behavior and the physico-mechanical properties of Pozzolanic cements. This is due to that, NS not only acts as filler to improve the microstructure, but also as activator to promote pozzolanic reaction with CH, which enhances the formation of excessive hydration products especially C-S-H. The higher beneficial role of NS is mainly due to its high surface area, filling effect and pozzolanic activity. The blended cement with 2.0 % NS gave the optimum mechanical properties at early ages while at later ages all cement pastes are similar and better than the blank sample.
https://jsrs.journals.ekb.eg/article_14130_eb28f13b81c38edd363971fd04a3d9b8.pdf
Hydration
High free lime
Mechanical Properties
nanosilica
Mortar
curing time
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
434
444
10.21608/jsrs.2018.14133
14133
Original Article
Preparation and characterization of bio-based polyurethanes obtained from castor oil and poly(3-hydroxybutyrate) and their nanocomposites
Mohamed Abdel Aziz
grsaad@yahoo.com
1
Mahmoud Gebril
2
Gamal Saad
3
Department of Chemistry, Faculty of Science, Cairo University, 12613, Giza, Egypt
Department of Chemistry, Faculty of Science, Cairo University, 12613, Giza, Egypt
Department of Chemistry, Faculty of Science, Cairo University, 12613, Giza, Egypt
Series of polyurethanes (PUs) based on PHB and castor oil CO were prepared using hexamethylene diisocyanate as a coupling agent. Nanocomposites of the prepared PUs were also prepared using cloisite 25A as nanofiller with different contents. FTIR an increment in the surface roughness with increasing both PHB and C25A. DSC showed that the samples exhibited two Tg values for both PHB and castor oil. The physical transition temperatures were found to depend on the contents of PHB, CO and C25A. The degradation behavior was studied using thermogravimetric analysis.
https://jsrs.journals.ekb.eg/article_14133_8f48715dc26f9b9c989a7a241ee32832.pdf
poly(3-hydroxybutyrate)
Castor oil
polyurethanes
nanoclay
Nanocomposites
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
445
461
10.21608/jsrs.2018.14509
14509
Original Article
Sequential extraction studies of Cu, Cd and U compounds from Gibbsite – bearing shale material, Abu Thor area, Southwestern Sinai, Egypt.
Abdel-Wahab G. M.
1
Zeinab A.
2
Aida S.
3
I. El Aassy
4
S. Seweify
5
E. Awny
6
Production Sector, Nuclear Materials Authority, Egypt
Chemistry Department, Faculty of Science (Girls) , El-Azhar University, Cairo, Egypt
Chemistry Department, Faculty of Science (Girls) , El-Azhar University, Cairo, Egypt
Production Sector, Nuclear Materials Authority, Egypt
Production Sector, Nuclear Materials Authority, Egypt
Production Sector, Nuclear Materials Authority, Egypt
Gibbsite-bearing shale material was recorded within intra-Carboniferous paleokarst profile of Um-Bogma Formation at Abu Thor area. The present paper is concerned with subsequent separation of Cu, Cd and U compounds from the sulfate solution of the present ore material. Abu Thor representative sample assays 0.5% of Cu, 0.014% of Cd and 0.04% of U as the elements of interest. The effective leaching parameters such as: curing temperature, H2SO4 concentrations, solid / liquid addition ratio, leaching time and leaching temperature were planned to investigate. The obtaind sulfate solution under the resulting optimum leaching conditions was found assaying 2.24 g/L of Cu, 0.066 g/L of Cd and 0.19 g/L of U with maximum leaching efficiencies of 92%, 96% and 95% , respectively. In addition 0.008% of V with maximum leaching efficiency of 8.6% The prepared sulfate solution was treated with 0.5% Na2S solution at pH 0.35 for selective separation of CuS where CdS was subsequently selectively separated at pH 0.5. The present U in the solution free from both Cu and Cd was oxidized with H2O2 solution and recovered with anion exchange resin Amberlite IRA400.
https://jsrs.journals.ekb.eg/article_14509_bc1c8ff4360fe0ca449316de73b0129d.pdf
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
462
477
10.21608/jsrs.2018.14512
14512
Original Article
Extraction study of Vanadium from Pre-Processed Gibbsite- bearing shale, Abu Thor area, Southwestern Sinai, Egypt, by using Amberlite IRA743 anion exchange resin,
Abdel-Wahab M
1
Zeinab A.
2
Aida S.
3
I. El Aassy
4
S. Seweify
5
E. Awny
6
(1) Production Sector, Nuclear Materials Authority, Egypt
(2) Chemistry Department, Faculty of Science (Girls) , El-Azhar University, Cairo, Egypt
(2) Chemistry Department, Faculty of Science (Girls) , El-Azhar University, Cairo, Egypt
(1) Production Sector, Nuclear Materials Authority, Egypt
(1) Production Sector, Nuclear Materials Authority, Egypt
(1) Production Sector, Nuclear Materials Authority, Egypt
This work is concerned with study the affecting parameters on the recovery of V from pre-processed gibbsite bearing shale sample which assays 0.045% of V which obtained from Abu Thor area, Southwestern Sinai, Egypt. The original sample (0.05 % V) was previously treated to selectively extraction of Cu, Cd and U through applying H2SO4 acid agitation leaching. The present study work involves alkaline dissolution of the sample residue with NaOH solution at the obtained optimum conditions. However ion exchange process was applied by using anion exchange resin, Amberlite IRA743.
About 97.25% of the extracted V was already regenerated by using 4% H2SO4. Not less than 98.2% of V was precipitated as hydrated V2O5 by using NH4OH solution via strongly oxidation by the addition of 0.25g KClO3 at 75 oC with continuous stirring for 2h. The latter was dried in the oven at 120 oC to prepare the final V product V2O5 (red cake). The overall process was designed in a technical flowsheet.
https://jsrs.journals.ekb.eg/article_14512_78063c15f5ebf973978080d42309fea5.pdf
Extraction
Vanadium pentoxide
Ion exchange resin
gibbsite bearing shale
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
478
791
10.21608/jsrs.2018.14515
14515
Original Article
Solvent extraction of Thorium(IV) from chloride acidic solution using Schiff base
Adel Orabia Orabia
1
Mohamed Cheirab
2
Mohamed Hassaneinb
3
Sami Hassana
4
Chemistry Department, Faculty of Science, Suez Canal University, Egypt
Nuclear Materials Authority, P.O. Box 530 El Maadi, Cairo, Egypt)
(Nuclear Materials Authority, P.O. Box 530 El Maadi, Cairo, Egypt)
Chemistry Department, Faculty of Science, Suez Canal University, Egypt)
Thorium(IV) is extracted from chloride medium by solvent extraction using a prepared Schiff base chelating agent, (E)-4-(2-hydroxy phenyl imino) pentane-2-one (AcPh) that is synthesized and characterized by FT-IR, 1H-NMR and elemental analysis. The obtained optimum extraction parameters were 0.02M AcPh/chloroform and diethyl ether ratio mixture, pH 6.5, 3:1 aqueous to organic phase ratio for 5 min. contact time at room temperature. The thorium(IV) was then stripped into aqueous media containing 0.5 M HNO3 solution using of 1:2 aqueous to organic phase ratio for 7 min. contact time at room temperature.
https://jsrs.journals.ekb.eg/article_14515_ed8d012a2bb3e8bd4a11696d629b6f34.pdf
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
492
509
10.21608/jsrs.2018.14540
14540
Original Article
Effect of Some Industrial Wastes onthe Physico-Chemical and Mechanical Properties of Hardened Cement Pastes
Essam Kishar
essamkishar@hotmail.com
1
D. Ahmed
2
T. ELSoukary
3
M. Mohamed
4
S. Fathi
samar.fathi@yahoo.com
5
Faculty of Women ,Ain shams university
Faculty of women, AinShamsUniversity, Cairo, Egypt.
Housing and Construction, Cairo, Dokie
Faculty of women, AinShamsUniversity, Cairo, Egypt.
Faculty of women, AinShamsUniversity, Cairo, Egypt.
In this work, Portland cement (OPC) is replaced by different ratios of aBlast Furnace Slag, Silica Fume(SF) and Cement Kiln dust (CKD). Compressive strength, combined water and phase composition of cement are measured after 1,3,7,28,90,180,270 and 360 days immersion in tape water.The effect of5%magnesium sulfate solutionon curingofthe hardenedblendedcement pastes was also examined.
Such replacement modified the strength, pore structure, and permeability of the hardened cement pastes. Sulphateattack on cement paste causes a serious deterioration. The aim of this investigation is to study the physico-chemical and mechanical properties of the prepared hardened blended cement pastes as well as study the effect of magnesium sulphate attack on these pastes. In addition, the effect of replacement of OPC by some additive was examined.
https://jsrs.journals.ekb.eg/article_14540_1963f0762d5cb4117ad58463aa1ab0b6.pdf
OPC
Blended cement
Cement kiln dust (CKD)
Silica fume (SF)
blast-furnace slag (GBFS) and Magnesium sulfate attack
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
360
372
10.21608/jsrs.2018.14543
14543
Original Article
Preparation and Assessment of Water Soluble Hyperbranched Polymers Based on Polyamide as Corrosion Inhibitor for Petroleum Application
Seham Shahen
shahen.seham@yahoo.com
1
Khalid Kabel
2
L. Kamel
3
R. Abou-Shahba
4
Azza. El-Shenawy
5
Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt.
Petroleum Applications Department, Egyptian Petroleum Research Institute, Naser City, P.O. 11727, Cairo,
Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt.
Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt
Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt. Abstract
The effect of addition of hyperbranched poly(amide-ester) (HPAE) generations 3 and 4 (AG3 and AG4) on the corrosion of steel in hydrochloric acid solution has been studied by weight loss measurements and quantum chemical calculations. The inhibition efficiency depended on the concentration of the hyperbranched poly(amide-ester). The experimental results suggest that these compounds are efficient corrosion inhibitors and the inhibition efficiencies increase with increasing their concentrations. The computed quantum chemical properties show good correlation with experimental inhibition efficiencies. Results obtained showed that hyperbranched poly(amide-ester) (HPAE) generations 4 is the best inhibitor, and the protection efficiency follows the order: AG4 > AG3. Inhibition efficiency was found maximum up to 97.05% for AG4 at the highest concentration (1000 ppm).
https://jsrs.journals.ekb.eg/article_14543_94045eb4e1110b4af67f5ca183105948.pdf
AB2-type-prepolymerized monomer
hyperbranched poly(amide-ester)
Corrosion
steel
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
510
525
10.21608/jsrs.2018.14704
14704
Original Article
Synthesis and characterization of Zn(II), Cu(II), Co(II), Ni(II), Cd(II) and Ru(III) ions with a tridentate NNO thiazole derived Schiff base
Samir El-Medanib
1
Ayman Abdel Aaziza
2
Rania Mohamed
3
Abdelmoneim Makhlouf
4
Sherin Mosad
5
Chemistry Department, Faculty of Science, El-Fayoum University, 63514, El-Fayoum, Egypt.
Chemistry Department, Faculty of Science, Ain Shams University, 11566, Abbassia, Cairo, Egypt.
Chemistry Department, Faculty of Science, El-Fayoum University, 63514, El-Fayoum, Egypt.
Chemistry Department, Faculty of Science, El-Fayoum University, 63514, El-Fayoum, Egypt.
Chemistry Department, Faculty of Science, El-Fayoum University, 63514, El-Fayoum, Egypt
Thermal reaction of Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Ru(III) metal ions with a tridentate Schiff-base ligand(HL) derived from the condensation of 2-aminothiazole and 2-hydroxy-1-naphthaldehyde resulted in the formation of a series of six new metal complexes: [Co(HL)2Cl2]; 1,[Ni(L)(CH3COO)(H2O)]; 2,[Cu(L)2]; 3, [Zn(L)2]; 4, [Cd(L)(CH3COO) (H2O)]H2O; 5, [Ru(L)2(H2O)2]Cl; 6. The ligand and its complexes were characterized by means of elemental and thermal analyses along with molar conductance and magnetic moment measurements as well as different spectroscopic techniques. The ESR spectrum of Cu(II) complex indicated elongated and covalent character of octahedral environment.
https://jsrs.journals.ekb.eg/article_14704_a7a33263c0ea46abb9db881783755f99.pdf
Spectroscopic studies
Schiff base
Transition metal complexes, Thermal studies
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
526
553
10.21608/jsrs.2018.14706
14706
Original Article
Preparation and characterization of polymeric dispersants based on vegetable oils for printing ink application
Nadia Yossif
1
nadia Kandile
nadiaghk@yahoo.com
2
Nabel Negm
3
Mohamed Abdelaziz
zezo_maaan1@yahoo.com
4
Chemistry Department, Faculty of women, Ainshams University, Cairo, Egypt
Chemistry Department Faculty of Women, Ain shams University,Heliopolis,Cairo,Egypt
Petrochemicals Department, Egyptian petroleum research institute, Cairo, Egypt
R&D Department, Degla chemicals, Cairo, Egypt
In this work, a novel vegetable oil-based polymers were prepared by epoxidation of soybean oil (SBO) and castor oil (CO) followed by ring opening reaction of epoxidized oil with polyether amine and poly propylene glycol. The prepared polymers were characterized by FTIR and GPC. The properties of vegetable oils and epoxidized vegetable oil (EVO) were studied. The prepared polymers were employed as novel polymeric dispersants for pigment dispersion in solvent based printing ink application. The mechanical and optical properties of prepared ink were studied. The net technical properties of the new ink formulations are relatively comparable to the prepared printing ink from standard polymeric dispersant. The polymeric dispersant 2 (PD2) and polymeric dispersant 4 (PD4) gave the best optical and mechanical properties among the prepared polymers.
https://jsrs.journals.ekb.eg/article_14706_5066583a608f79325905a235f49d8954.pdf
vegetable oils
Printing inks
Polymeric dispersants
Pigment
Castor oil
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
538
552
10.21608/jsrs.2018.14709
14709
Original Article
Geopolymer Cement Based on Alkali Activated Slag
Essam Kishar
essamkishar@hotmail.com
1
Doaa Ahmed
2
Nourhan Nabil
nouranabil.eg@gmail.com
3
Faculty of Women ,Ain shams university
Chemistry Department, University College, For Girls. Ain Shams University, Cairo, Egypt.
Chemistry Department, University College, For Girls. Ain Shams University, Cairo, Egypt.
The aim of this investigation is to prepare geopolymer cement by mixing various amounts of granulated blast furnace slag (GBFS) with Fly ash (FA) and cement kiln dust (CKD). Seven blends are prepared using 100 % slag , 95% slag+5% CKD or fly ash , 90% slag + 10% CKD or Fly ash and 85% slag + 15% CKD or Fly ash . The dry mixes with the different mixing ratios are activated by the alkaline activator (AA) 6% sodium hydroxide solution and 10% by volume liquid sodium silicate, the w/s ratio used is 0.24. The pastes are moulded into 1 inch cubic moulds and left within the moulds at 100% relative humidity for 24 hrs, then demoulded and cured under tap water for 1,3,7,28,90 and 180 days. At each hydration time, compressive strength, combined water , bulk density , total porosity are determined . X-ray diffraction measurements showed CSH as the main hydration constituent of the geopolymer structure being amorphous and glass-like. The results indicate that the mix containing 85% slag + 15% fly ash give the best physico chemical and mechanical properties of geopolymer cement .
https://jsrs.journals.ekb.eg/article_14709_c74cdf01e9a4e7a801898bcbf2c05854.pdf
Geopolymer cement
Slag
Fly Ash
Cement kiln dust and Alkali activated binders
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
553
574
10.21608/jsrs.2018.14711
14711
Original Article
Green synthesis of silver, gold and silver-gold nanoparticles: Characterization, antimicrobial activity and cytotoxicity
Mostafa Khalil
1
D. Sabry
2
Huda Mahdi
hudamahdi@gmail.com
3
Chemistry Department, Faculty of Science, Ain Shams University, 11566, Abbassia, Cairo, Egypt
Chemistry Department, Faculty of Science, Ain Shams University, 11566, Abbassia, Cairo, Egypt
Chemistry Department, Faculty of Science, Ain Shams University, 11566, Abbassia, Cairo, Egypt
The present study reported a facile and rapid biosynthesis method for gold nanoparticles (GNPs) silver nanoparticles (AgNPs) and bimetallic heterogeneous sliver-aurum nanoparticles(AgAuNPs) using the leaves of Gmelinaarborea (ROXB) (Family Verbenaceae) extract. The aqueous leaves extract was used as biotic reducing and stabilizing agent of the growing nanoparticles. The synthesized gold nanoparticles (AuNPs),silver nanoparticles (AgNPs) and silver-gold core-shell nanoparticles(AgAuNPs) were characterized using UV-Vis spectroscopy (UV–Vis), Fourier transform infrared spectroscopy, (FT-IR), X-ray diffraction (XRD),transmission electron microscopy (TEM)and thermal gravimetric analyses (TGA). Several factors such as the extract amount, contact time and solution pH, as possible influences; were investigated to obtain the optimized synthesis conditions. The antimicrobial activity study revealed that while the aqueous extract at concentrations of0.8 and 4% (w/v) showed no effect on the antimicrobial activity, the produced nanoparticles, AuNPs, AgNPs and AgAuNPs inhibited thegrowth of Gram positive bacteria (Bacillus subtillus, Staphylococcus aureus), Gram negative bacteria (E. Coli and Pseudomonas aeruginosa) and Fungi (Candida albicansand Aspergillusniger). The cytotoxic activity against hepatocellular carcinoma (HePG2)was alsoevaluated.
https://jsrs.journals.ekb.eg/article_14711_d36a26bce43ea1f0decaa1e7ebda528d.pdf
Biological synthesis
Gmelinaarborea
Gold nanoparticles
silver nanoparticles
silver-gold core-shell
nanoparticles, antibacterial activity
Hepatocellular carcinoma
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
333
359
10.21608/jsrs.2018.14712
14712
Original Article
Effect of Gamma irradiation on mechanical behavior of EPDM rubber-recycled news print microfibers composites
Magdy Ali
1
Khaled El-Nemr
2
Amina Hamada
3
Wafaa Abd-elhady
4
Radiation Chemistry Department, National Center for Radiation Research and Technology, B.O. Box 29 Nasr City, Egyptian Atomic Energy Authority, Cairo Egypt
Radiation Chemistry Department, National Center for Radiation Research and Technology, B.O. Box 29 Nasr City, Egyptian Atomic Energy Authority, Cairo Egypt
AlAzhar University, Faculty of Sceince (Girls branch), Chemistry department
AlAzhar University, Faculty of Sceince (Girls branch), Chemistry department
The waste newsprint paperswere collected from local market and submitted to chemical pulping in a kneader with 2M NaOH. The fiber after getting rid of water, treated again using 2M HCL solution for the same time period. Then the news print pulped microfibers (NPMF) batch obtained was mixed with Ethylene propylene diene monomer rubber (EPDM) on roll mill with differnet contents ranged from 5 to 50phr (part per hundred part of rubber). The prepared composites subjected to gamma irradiation at different doses from 20 up to 100kGy. The characterization of the microfibers carried out by different tools like scanning electron microscopy (SEM), X-ray diffraction (XRD),Forrier Transform Infrared spectra (FTIR) and Thermogravimetric analysis (TGA). The mechanical properties of prepared composites like tensile strength (Ts), Elongation at break (Eb%), tensile modulus(M100) , tensile toughness and crosslink density (Cd) were measured as a function of fiber contents and irrdaition dose. The results indicated the Ts was increased with increasing fiber content up to 10phr and incresed with increasing irradiation dose up to 40kGy, while Eb% decreased by fiber content and irradiation dose. M100 and Cd were incresed with invreasing fiber content up 50phr fiber and increased by irradiation dose up to 60kGy. The results concluded that toughness values of EPDM/ news print fiber composite reach maximum using 10phr fiber concentration and 60kGy irradiation dose.
https://jsrs.journals.ekb.eg/article_14712_ef489632ee1d06203fc0fc967cf11877.pdf
waste newsprint microfibers (NPMF)- EPDM/news print fiber composites Chemical repulping
Thermogravimetric analysis (TGA)
X-ray difrraction (XRD)
FTIR analysis– Mechanical properties
eng
Ain Shams University, Faculty of Women for Arts, Science and Education
Journal of Scientific Research in Science
2356-8364
2356-8372
2017-09-01
34
part1
575
591
10.21608/jsrs.2018.14716
14716
Original Article
Application of modified Maple Wood Saw Dust with Polyaniline for the Removal of Anionic Dyes From Waste water : Kinetics and IsothermStudies
A. Emam
1
Nora Hilal
2
A. El-Bayaa
3
N. Badawy
4
U. Ghiat
5
Chemistry Department, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt
Chemistry Department, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt
Chemistry Department, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt
Chemistry Department, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt
Chemistry Department, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt
In this work, application of polyaniline coated onto wood sawdust (PAni/SD) for the removalof anionic dyes namely Reactive Red 43 (RR43 dye) and Direct Orang 85 (DO85 dye) from aqueous solutions is introduced.Maple wood sawdust was characterized by FourierTransform-Infrared Spectroscopy (FTIR),Scanning ElectronMicroscopy (SEM).The effects ofsome important parameters such as pH, initial concentration, sorbent dosage, and contact time onthe uptake of anionic dyes solution were also investigated. In order to get a better comparison, adsorptionexperiments were also carried out using polyaniline coated maple wood saw dust (PAni/MWSD) and without coating (MWSD). It was found that PAni/MWSD can be used to removeanionic dyes such as DO85 and RR43 dyes from aqueous solutions very efficiently. Experimental data were analyzed bythe Langmuir,Freundlichand Temkinmodels of adsorption. Kinetic parameters for the adsorption of anionicdyes for the selected adsorbents are also reported. Application of modified sawdust with polyaniline for the removal of anionic dyesisvery promising for wastewater treatment.
https://jsrs.journals.ekb.eg/article_14716_c88ca7ef7d240d5884f7d74fa6765fbc.pdf
MWSD
polyaniline coated MWSD .anionic dyes
Adsorption
kinetics and isotherm studies