@article { author = {Amin, Huda and Ali, Omyma and EL-Medani, Samir and Sayed, Abeer}, title = {Synthesis, spectroscopicand antimicrobial studies of newCr(III), Co(II), Ni(II) and Cu(II)Schiff base complexes}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {1-18}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.30994}, abstract = {Complexes of the 8-((furan-2-ylmethylene)amino)naphthalene-1-amine, Schiff base ligand with the metal ions, Cr(III), Co(II), Ni(II) and Cu(II) have been prepared and characterized by elemental analyses, IR, 1H NMR, Uv-visible, magnetic moment, molar conductance and thermal analysis. The complexes are found to have the formulae [CrLCl(H2O)3]Cl2.3H2O, [CoL2(H2O)2]Cl2.3H2O, [NiL(H2O)2]Cl2.4H2O and [CuL(H2O)2]Cl2.2H2O. The conductance of complexes is measured and revealed their electrolyticnature. Thermal analysis and thermodynamic parameters of the complexes were investigated and indicated the presence of hydrated water molecules. The antimicrobial activity is assayed in vitro against two fungi and four bacteria species.  }, keywords = {complexes,Spectral,Thermal analysis,Biological Activity}, url = {https://jsrs.journals.ekb.eg/article_30994.html}, eprint = {https://jsrs.journals.ekb.eg/article_30994_5bb035aa3c7dddc1f9dc0a9f6bf532c7.pdf} } @article { author = {Osman, Naglaa and Zayed, Hamdia and Elokr, Mohamed and Soliman, Lalia}, title = {Structural and Optical properties of P2O5-ZnO-Na2O-Li2O glasses}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {19-35}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.30995}, abstract = {The transparent glasses of composition 40P2O5-20ZnO-(40-x)Na2O-xLi2O have been prepared using conventional melt quenching technique (where 0 ≤ x ≤ 25 Li2O mol. %). The prepared glass samples were characterized by x-ray diffraction (XRD), differential thermal analysis (DTA), UV-VIS optical absorption and Fourier transform infrared spectroscopy (FTIR). The differential thermal analysis (DTA) studies showed that the glass transition temperature (Tg) decreases from 558K to 546.7K as the content of Li2O increases to 25 mol.% Li2O . The density and oxygen packing density measurements are found to be increase while the molar volume decreases with increasing of Li2O content. The FTIR studies revealed that these glasses consist of Q3, Q2, Q1 and Q0 structural units. Absorbance of investigated glasses was measured and used to estimate their optical absorption coefficient and optical energy gap. The optical studies revealed that the indirect optical band gap (Eg) decreases from 3.33-2.64 eV and Urbach energy increases from 0.46-2.4eV with increase of  Li2O content from zero to 25 mol.% Li2O.  }, keywords = {Phosphate glasses,structure properties,Optical properties}, url = {https://jsrs.journals.ekb.eg/article_30995.html}, eprint = {https://jsrs.journals.ekb.eg/article_30995_403063df93f81637e276747c36fb9682.pdf} } @article { author = {RIZK, ASHRAF and KISHAR, ESSAM and AHMED, D. and KOHAIL, MOHAMED}, title = {Preparation and Characterization of Low Cost Geopolymer Cement}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {36-48}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.30996}, abstract = { This paper presents the preparation and characterization of geopolymer cement. Sodium hydroxide with different percentage (4%, 6% and 8%) with sodium silicate (5%, 10% and 15%) of the mass of blast furnace slag are mixed to prepare the activator. The slag is mixed with the activator of different concentrations to prepare the geopolymer pastes. The physicochemical and mechanical properties of the hardened pastes cured in water at room temperature for different time intervals up to 90 days are measured.XRD of some selected samples are made. The results indicate that alkali content has significant effect on the physicochemical and mechanical properties of the hardened pastes. Compressive strength, combined water contents and bulk density increase while total porosity decrease with increasing alkali concentration.  }, keywords = {Alkali activated blast furnace slag,Compressive strength,Bulk density,total porosity and combined water}, url = {https://jsrs.journals.ekb.eg/article_30996.html}, eprint = {https://jsrs.journals.ekb.eg/article_30996_70fa37cdbb831b5694051d6918627a30.pdf} } @article { author = {Ibrahim, Sarah and abdelhamid, Ferialla and salah, Neveen and elsayed, Mohamed}, title = {In Vitro Effiacy Of Different Antibiotic Combinations On Aminoglycoside-Resistant Acinetobacter Baumannii}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {49-65}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.30997}, abstract = {The potential synergy of combination of β-lactams(ceftriaxone, cefixime, carpabenem, and impenim)and aminoglycosides were tested against multidrug resistant Acinetobacter baumannii. Two-hundred bacterial pathogens were collected from Egyptian hospitals from various infection sites.One hundred and twentytwo isolates (60%) were resistant for aminoglycosides.Out of two-hundred strains,130 Acinetobacter baumannii strains (65%), were impenim resistant and nearly 180 Acinetobacter baumannii strains (90%),were resistant to cephalosporin. The MIC was determined for Acinetobacter baumanni istrains(32 to >512 mg/ml). In the checkerboard method, 38 combination from 45 combinations showed synergism for more than60% of the tested strains but only two  demonstrated antagonism against 5 of tested strains. i.e. the ratio of synergy were detected for gentamycin with impenim, ceftriaxone and cefixime was 100%. Also synergism observed in case of combination between amakacin and tobramycin with ceftriaxone and cefixine with 100%,but in case of combination of tobramycin with imipenem showed ratio of synergy is 50% Whereas, combination between amakacin/impenim showed antagonism .  }, keywords = {Acinetobacter baumannii,Aminoglycosides,β-lactams combination. Synergy}, url = {https://jsrs.journals.ekb.eg/article_30997.html}, eprint = {https://jsrs.journals.ekb.eg/article_30997_2bc85166dfe1ff9e0ca18d5e74064290.pdf} } @article { author = {Kamal, Noha and Abdelsalam, Shimaa and Harpy, Nareman and Hewedy, Maha and El-Aassy, Ibrahim}, title = {Phenotypic Characterization of some Actinobacteria and Fungi Isolated From Exposed rock surfaces in Southwestern Sinai, Egypt}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {66-99}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.30998}, abstract = {The search of novel strains continues to be of great importance in research around the world for pharmaceutical, industrial, agricultural and biomining applications. The present study aims to investigating the microbial diversity of rock samples collected from Um Bogma formation, southwestern Sinai, Egypt which was chosen for its unique location, geological and physicochemical properties. The studied samples showed small microbial diversity and low microbial count. A total of ten isolates of actinobacteria and ten isolates of fungi were isolated and characterized phenotypically. The results indicated that all the isolated actinobacteria belong to the genus Streptomyces. They were all halotolerant with some showing antimicrobial activities when tested against Bacillus subtilis, Pseudomonas aeruginosa ATCC 9027, Staphylococcus aureus ATCC 6538, Escherichia coli ATCC 8739, Candida albicans  and Aspergillus flavus. On the other hand, all the studied fungal isolates belong to the genus Aspergillus. They showed resistance to the antifungal nystatin when a concentration of 50 µg per ml was used. The studied locations is characterized by their harsh conditions which does not support the growth of most microorganisms which includes a temperature ranging from below 0°C at night to above 46°C throughout the day, low water content and organic matter hosting radioactive and heavy elements. Rock-dwelling microbial communities that survived such conditions open further research investigations on studying phylogenetic relationships between them as well as their possible microbial activities that can be of environmental and industrial importance.  }, keywords = {Sinai,rock,Actinobacteria,fungi,Streptomyces,Aspergillus}, url = {https://jsrs.journals.ekb.eg/article_30998.html}, eprint = {https://jsrs.journals.ekb.eg/article_30998_e3d885dedf84c25b1e0edb4d24c1b597.pdf} } @article { author = {Ibrahim, Reiham. and Abd El-Azeem, S. and El-Ghanam, S. and Soliman, F.}, title = {Temperature Effects on the Electrical Characteristics of BJTs and MOSFETs}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {100-112}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.30999}, abstract = {      The aim of the present paper is to shed further light on studying the temperature effects on the static (I-V) and dynamic (C-V) characteristics of bipolar junction- and metal oxide field effect - transistors. In this concern, several parameters were plotted at different temperature levels. The experimental results showed that, for the bipolar junction transistor 2SC2120, a noticeable increase in the collector current and the current gain from 0.198 A and 0.14 up-to 0.25 A and 0.24 by increasing the temperature from 25ºC and 135ºC, respectively. Considering the threshold voltage, its value was shown to be decreased from 0.62 Volt to 0.42 Volt within the same temperature range. In addition, from the traced dynamic characteristics of the same BJT, the diffusion capacitance of the emitter-base junction, as an example, increased from 10.11 nF up-to 45.09 nF by increasing the temperature up-to 135 ºC. On the other hand, for metal oxide field effect transistor 2N6660, the static characteristics showed that a noticeable decrease in the drain current and the forward trans-conductance from 1.2A and 5.0 Ω-1 down-to 0.79 A and 1.9 Ω-1, respectively, due to temperature increasing from 25 ºC up-to 135 ºC. While the threshold voltage was hold constant. Finally, the reverse capacitance of the gate-drain junction was shown to be increases from 41.48 pF up-to 47.31 pF within the same range of temperature.  }, keywords = {Temperature effect,bipolar junction transistor,metal oxide field effect transistor,capacitance,impedance,quality and dissipation factor and phase angle}, url = {https://jsrs.journals.ekb.eg/article_30999.html}, eprint = {https://jsrs.journals.ekb.eg/article_30999_295aed742468a8d2c81c3d10806c4b3f.pdf} } @article { author = {El-ashry, Fatma and Zaki, Amira and El-hawary, Mohamed and Boshta, Mostafa}, title = {Influence of deposition temperature on the properties of spray pyrolysed CdO thin films for TCO application}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {113-119}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.31000}, abstract = {Transparent and conducting cadmium oxide (CdO)thin films were deposited onto soda-lime glass substrate by simple chemical spray pyrolysis technique at different deposition temperatures. The influence of the deposition temperature on structural, morphological, electrical and optical properties of CdO films was investigated. X-ray diffraction patterns revealed that polycrystalline CdO phase with cubic crystal structure started to form at deposition temperature of 300 °C with secondary phase, while at lower deposition temperature the prepared layers showed amorphous structure. At deposition temperature higher than 300 °C, the prepared layers showed single CdO phase enhanced crystallinity. Enhanced grain growth of CdO films is observed with increasing the deposition temperature. Moreover, the electrical conductivity of the films was found to be increasing with increasing the deposition temperature, which is consistent with the enhanced grain growth. Additionally, the optical transmittance measurement of the CdO films showed around 90% transmission in the visible and near infrared regions, independently of deposition temperature.  }, keywords = {Transparent conducting oxids,CdO,spray pyrolysis,deposition temperature, and grain growth}, url = {https://jsrs.journals.ekb.eg/article_31000.html}, eprint = {https://jsrs.journals.ekb.eg/article_31000_54cda3e4e5a763c2e72f98309950a116.pdf} } @article { author = {Mohamed, A. and El-Shinnawy, N. and Abd El-mageid, S.}, title = {Difference between natural and artificial sweeteners: Histopathological studies on male albino rat’s brain (hippocampus)}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {120-139}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.31001}, abstract = {          The present work is a trial to compare effect of short and long term administrations of sucrose as a natural widely used sweetener, aspartame as a synthetic non-caloric sweetener and stevia as a novel natural non-caloric sweetener on rats' brain hippocampus. This was achieved using 64 male albino rats. Rats were divided into four groups. The first group served as control group receiving distilled water. The second group represented the sucrose group receiving 10% sucrose solution (weight /volume). The third group served as aspartame group receiving aspartame (75 mg/kg body weight /day).The fourth group represented the stevia group and received (40 mg/kg body weight/day).Animals received different experimental treatments by oral gavage and they were dissected after a short duration of 30 days and long experimental duration of 90 days. Histological investigation of hippocampal sections of hippocampus revealed neuronal degeneration with pyknotic nuclei, dilatation and congestion in blood vessels and spongiform changes in the neuropil after both sucrose and aspartame treatments. On the other hand, stevia treatment to rats showed near to normal pattern of the granular and the neuropil. Histochemical, stained sections of Bromophenol blue stain to hippocampal tissue recorded significant decrease in protein content in hippocampus in sucrose group and aspartame groups respectively after 90 days compared with stevia and control rats. Staining hippocampus tissue of rats treated with sucrose or aspartame with Congo red stain revealed cellular homogenous pink deposits of amyloid throughout the hippocampus tissue. This was decreased and observed as limited or few amyloid depositions in stevia group compared to controls. In conclusion, Stevia, a non-calorific sweetener, is a better alternative to the synthetic sweetener aspartame because stevia has the potential to assist individuals in regulating their weights without any recognized side effects on hippocampus tissue besides its health benefits as a natural antioxidant.       }, keywords = {sucrose%,Aspartame,Stevia,histopathology}, url = {https://jsrs.journals.ekb.eg/article_31001.html}, eprint = {https://jsrs.journals.ekb.eg/article_31001_3f2fc5198ba0fa1dc6545caa161313ab.pdf} } @article { author = {Esmail, M. and Kh, O. and Al Hamed, E. and Kassab, A.}, title = {Characterization of hydroxyapatite coating on Mg-1%Zn alloy for implant application}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {140-160}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.31002}, abstract = {Most conventional orthopedic implant used for joint and bone fractures consist of metallic biomaterials with polycrystalline microstructures that exhibit high hardness, good corrosion resistance, excellent fatigue and wear resistance. Alternatively, to avoid post extraction of the implant, intensive efforts are being made in recent years to develop new classes of so called “biodegradable implant composed of non-toxic materials that become reabsorbed by the human body after a reasonable period of time. We use Mg alloys since they have poor corrosion resistance in the body environment. i.e Mg-1%Zn alloy. Zinc improves the mechanical properties of the magnesium alloys and does not show any side effects on the human body. This investigation shows ways of improving corrosion resistance of this alloys by electrodeposition of hydroxyapatite (HA), hydroxyapatite with high concentration of phosphate (HAP), hydroxyapatite with high concentration of calcium (HACa) and hydroxyapatite with high concentration of both phosphate and calcium (HAPCa) as a bio-compatible coating. The coating improves the corrosion protection of Mg-1%Zn alloy.  The corrosion protection follows the sequence    HAPCa › HACa › HAP › HA.  }, keywords = {Mg-1% Zn,Hydroxyapatite,Phosphate and Calcium Nitrate}, url = {https://jsrs.journals.ekb.eg/article_31002.html}, eprint = {https://jsrs.journals.ekb.eg/article_31002_e2d4e8ebc1128badd8d6894a4fb91fd2.pdf} } @article { author = {Osman, N. and Elokr, M. and Soliman, L. and Zayed, H.}, title = {Synthesis and study of electrical properties of Li2O modified P2O5-ZnO-Na2O glasses}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {163-183}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.34276}, abstract = {The transparent glasses of composition 40P2O5-20ZnO-(40-x)Na2O-xLi2O have been prepared using conventional melt quenching technique (where 0 ≤ x ≤ 25 Li2O mol. %). The amorphous nature of the prepared glass samples is confirmed by x-ray powder diffraction (XRD). By increasing the Li2O content, the density and oxygen packing density increase while the molar volume decreases which indicates that the structure is more compact. The differential thermal analysis (DTA) studies showes that 15 mol.% Li2O glass sample has the highest thermal stability and the glass transition temperature (Tg) decreases as the content of Li2O increases till 25 mol.% Li2O . The ac and dc electrical conductivities and dielectric constants of the prepared glass samples have been investigated. It is found that the          dc conductivity increases with the concentration of Li2O mol.% and the temperature dependence of the dc conductivity at low temperature (303 – 383 K) and at high temperature (403 – 473 K) obey the Arrhenius law. The activation energies ΔEdc1 (at high temperatures) and ΔEdc2 (at low temperatures) were determined. The values of σdc can be obtained also from the impedance study at different temperatures and different concentrations using Cole-Cole plot. To determine the conduction mechanism, the ac conductivity and its frequency exponent (s) have been analyzed by correlated barrier hoping model (CBH). It is found that s has values between 0.89-0.996; consequently. The correlated barrier hopping (CBH) seems to be the most interesting model related to the obtained results. Real and imaginary parts of dielectric constant (ε' and ε'') have been found to decrease with increasing frequency and temperature and this result would be discussed by means of dielectric polarization mechanism of material. The maximum value of the maximum barrier height Wm obtained from Guitini equation was found to increase with increasing of Li2O mol. %.}, keywords = {Phosphate glasses,structure properties,electrical properties}, url = {https://jsrs.journals.ekb.eg/article_34276.html}, eprint = {https://jsrs.journals.ekb.eg/article_34276_47b1815efbfb8ae84cb470ce5b77d372.pdf} } @article { author = {Gad, Karima and Kholief, Tahany and Barakat, Heba and El- masry, Shimaa}, title = {Evaluation of Pumpkin (Cucurbita moschata) Pulp and Seeds Extracts on Gastrointestinal Ulcers Induced by Indomethacin in Rats}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {184-200}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.34277}, abstract = {Peptic ulcer is considered to be one of the most common diseases especially in old age persons due to, the prolonged use of non-steroidal anti-inflammatory drugs (NSAIDs).The present study was done to evaluate the protective and improvement effects of oral administration of each of pumpkin pulp and seed aqueous and ethanolic extracts on gastrointestinal ulcer lesions induced by oral administration of indomethacin in rats. The results showed that indomethacin induced ulceration and inflammations in stomach and small intestine in rats revealed by a significant elevation in xanthine oxidase (XO) and myeloperoxidase (MPO) activities.  Moreover, a significant increase in neutrophils infiltration and lipid peroxidation were evidenced by significant increase in the levels of malondialdehyde (MDA), nitric oxide (NO) with decrease in catalase (CAT) activity and reduced glutathione (GSH) level. However, treatments with pumpkin pulp and / or seed extracts caused a significant decrease in the values of gastric volume, free and total acidity in all groups of rats after administration of pumpkin pulp and / or seeds oil extracts and a significant protective and improvement effects on gastrointestinal status was observed compared to indomethacin pathogenic group. }, keywords = {Peptic ulcer,Indomethacin,Pumpkin,Xanthine oxidase,Myeloperoxidase}, url = {https://jsrs.journals.ekb.eg/article_34277.html}, eprint = {https://jsrs.journals.ekb.eg/article_34277_dd24681bf002fd80040d27cba139d139.pdf} } @article { author = {Sayed, M. and Elokr, M. and Soliman, L. and zayed, H.}, title = {Study of the optical properties of Li2O modified P2O5-Na2O glasses}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {201-213}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.34278}, abstract = {Optical characteristics of the prepared glasses of composition 55 P2O5 – (45-x) Na2O – x Li2O were ( 0 ≤ x ≤ 35 mol% ) have been investigated by X-Ray diffraction (XRD), differential thermal analysis (DTA), density (ρ), molar volume (Vm), optical packing density (OPD), UV spectroscopy and Fourier transform infrared (FTIR). The FTIR studies revealed the vibrational modes of prepared glass samples. Absorbance of investigated glasses was measured and used to estimate their optical absorption coefficient and optical energy gap. The optical studies revealed that the indirect optical band gap (Eopt) increases from 3.2-3.5 eV and the Urbach energy decreases from 1.133-0.838 eV with increase of Li2O content from zero up to 35 mol% Li2O.}, keywords = {Phosphate glasses,structural properties,Optical properties}, url = {https://jsrs.journals.ekb.eg/article_34278.html}, eprint = {https://jsrs.journals.ekb.eg/article_34278_9106a7fb1c1762d2caf5a4c56a127a1c.pdf} } @article { author = {Abd El Wahab, Rana and El Shershabe, A. and Ezz El Din, M and Taha, A.}, title = {Using of Electrodeposition Technique to remove Ra-226 from Contaminated soil}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {214-225}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.34279}, abstract = {The aim of this study was to remove Ra-226 from the contaminated soil samples which collected from one of oil company located at western desert of Egypt. Five soil samples (S-1, S-2, S-3,S-4,S-5) were collected from the bottom of evaporation pond from different positions of dry evaporation pond inside the oil  company. The activity concentration of Ra-226 measured by using the Hyper Pure Germanium  detector (HPGe) connected to MCA . Electrodeposition  technique was used  to produce in situ metallic coatings by the action of an electric current on a conductive material immersed in a solution containing a salt of the metal to be deposited. Chemical agents added to the solution to increase the efficiency of contaminant removal  nitric acid HNO3 was added to improve the solubility of Ra-226. Three different  electrods made from stainless steel, aluminum and cupper poles  were used in this study. The data obtained showed that the highest removal  percentage of the Ra-226 found to be 73% when the aluminum pole was used. Therefore, from the obtained data, it is clear that the electrodeposition technique using aluminum poles for removal of Ra-226 can be used for remediation or treatment contaminated soil produced from oil industry.  }, keywords = {Electrodeposition,Decontamination,NORM,HPGe,contaminated soil}, url = {https://jsrs.journals.ekb.eg/article_34279.html}, eprint = {https://jsrs.journals.ekb.eg/article_34279_b1bf6279c8cf3987c1ad4eede4f7a7f0.pdf} } @article { author = {Mahmouda, Aya and Youssefa, Nadia and Abo El Nagab, Ahmed and Selimc, M.}, title = {Removal of Copper Ions from Wastewater Using Magnetite Loaded On Active Carbon (AC) and Oxidized Active Carbon (OAC) Support}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {226-247}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.34280}, abstract = {The magnetite Fe3O4 was supported on active carbon AC (Fe3O4 /AC) and oxidized active carbon OAC (Fe3O4 /OAC). It was prepared by co-precipitation method and characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), surface area measurements (BET) and vibrating sample magnetometer (VSM) techniques. Fe3O4 /AC and Fe3O4 /OAC were used as adsorbents for removal of Cu (II) ions from wastewater. The effect of adsorption parameters such as contact time, the pH of the solution, the weight of adsorbent and the initial concentration of Cu(II) ions was elucidated to achieve the process’s optimal operational conditions. It was found that the removal percentage of the Cu(II) ions was reached to  96.15 % after 30 min. The adsorption process fitted very well the pseudo-second-order model and the adsorption equilibrium data could be well described by the Langmuir isotherm.}, keywords = {}, url = {https://jsrs.journals.ekb.eg/article_34280.html}, eprint = {https://jsrs.journals.ekb.eg/article_34280_6e78cb9b7d5ef8ed2b0d9bd5c0152e3c.pdf} } @article { author = {ElDabour, Sameh and Harpy, N. and Nada, Afaf and Sallam, A. and El Aassy, E and El Feky, M.}, title = {Radiometric and microbiological investigations of ore and waste samples with especial emphasis on suitable fungus for remediation processes}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {274-285}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.52635}, abstract = {The capacity of the micro-organisms in ore transformations makes bioleaching technique a very interesting alternative to conventional processes. Radiometric studies indicate high uranium contents in ore and waste samples. This paper describes the suitable fungus species for mobilization of U from low-grade U ores and their resulting wastes. The high bioleaching efficiency in waste samples is mainly attributed to the presence of high sulphate contents in these samples which converted by the assistance of microorganisms into sulphuric acids and so, increase the bioleaching efficiency. Fungal leaching technique demonstrated an adequate recovery of uranium, with an efficient and cost-effective means from waste samples and respect to a reuse of waste for economic and environmental purposes  }, keywords = {Uranium ore,Bioleaching,Aspergillus,Remediation}, url = {https://jsrs.journals.ekb.eg/article_52635.html}, eprint = {https://jsrs.journals.ekb.eg/article_52635_86fedf9c114e6727f82db4d77491bc83.pdf} } @article { author = {El-sayed, O. and Mousa, W. and El-Mahy, Safaa and Salem, M. and Battisha, I. and Mahani, Ragab and lahmar, A. and El Marssi, M.}, title = {Photoluminescence, structural, morphology and dielectric properties of BaTi0.9Sn0.1O3 doped with Nd3+ and Nd3+/ Yb3+ ions}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {248-268}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.57630}, abstract = {Nano-structure BaTi0.9Sn0.1O3 (BTSO) doped with Nd3+ (BTSO: 5N) and co-doped with Nd3+/Yb3+ ions (BTSO: 5NY), were prepared using the modified sol-gel method in powder form and annealed at 1050oC in air for 4h. Their structural, morphological, photoluminescence and dielectric properties studies were investigated. The crystallite sizes from XRD and TEM found to be decreased upon doping with Nd3+and Nd3+/Yb3+ ions, respectively. FTIR results showed enhancement of crystallinity and absence of carbonates upon increasing Yb3+ ions. TEM micrographs show that particles have spherical shape with small size within the nano-structure phase. FESEM microphotographs showed a density increase due to replacement of Nd3+and Yb3+ions at the B-site (Ti4+). From photoluminescence it was obtained that emissivity quenched by increasing Yb3+ ions concentration as the Nd3+ act as sensitizer for Yb3+. Cuire temperature (Tc) of doped and co-doped samples shifted to lower values. Besides, their permittivity and AC conductivity increased in comparison with BTSO.  }, keywords = {BTSO,XRD,Curie temperature,Dielectric properties}, url = {https://jsrs.journals.ekb.eg/article_57630.html}, eprint = {https://jsrs.journals.ekb.eg/article_57630_0f61e1f27992d59c5d22b075521b1787.pdf} } @article { author = {Ehsan, Nahla}, title = {Effect of Nitrobien Biofertilizer on Cytogenetic and Growth Parameters Alterations in Vicia faba}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {281-298}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.57631}, abstract = {    The study objective evaluate the effect of Nitrobein biofertilizer on plant growth parameters and cytogenetic alterations through the mitotic and meiotic divisions of Vicia faba after treated with different doses (D, 2Dand 4D) compared with control. The variation in the content of the genetic material through G1, S, G2 at cell cycle had a proportion of cells entering the cell cycle at interphase as an indicator for cell proliferation and percentage of mitotic index  by using cellular image analysis based on the relationship between DNA as Eeuchromatin and  Heterochromatin and the Feulgen stain intensity, added  to followed the chromosome behavior through  M phases from cell cycle at mitotic and meiotic divisions, where the recorded results had a proportional relationship with biofertilizer doses (D,2Dand 4D) compared with control accompanied with the mutagenic effects as a results of chromosome aberration at metaphase stage represented by bridges, fragment  and nondisjunction chromosome at anaphase based on the end-to-end fusions between sister chromosomes or sister chromatids end joining as a result telomere dysfunction and anomalies chromosomal types was permanent where its continued from somatic cells to gametic cells in meiotic division. On the other hand, there is a significant increase in growth parameters after treated with biofertilizer doses    }, keywords = {Cytogenetic,Nitrobien biofertilizer,Telomere,Cell cycle,Eeuchromatin}, url = {https://jsrs.journals.ekb.eg/article_57631.html}, eprint = {https://jsrs.journals.ekb.eg/article_57631_8189cd0a68a82fca04a6318e3d9db25c.pdf} } @article { author = {Mohamed, Reham and El. Sweify, Fatma and Ali, Mohamed and Hegazy, Wafaa}, title = {Instrumental Neutron Activation for Analysis of some Human Renal stone samples}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {299-317}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.57632}, abstract = { Recently the incidence rate of renal stone disease is increased in Egypt. In addition to industrial and environmental effects in this increase, trace elements may also have a role in the formation of such stones, inspit of their significance in biological lithogenesis. In this study instrumental neutron activation analysis (INAA) technique is applied for elemental analysis of some renal stones, collected from patient living in different provinces in Egypt. The samples are collected from male, female and children. The patients are of varied ages. The analyses are carried out under various conditions of irradiation and cooling time. Major, minor and trace elements were determine. Standard material is used for accuracy and quality control measurements. The analyzed elements were: As, Br, Ca, Co, Cr, Cu, Fe, Hf, In, Mg, Mn, Na, Se, Sr, Tb, V and Zn under the experimental conditions Some of these elements are biologicaly essential and others are dangerous or toxic.  }, keywords = {Kidney stones – Renal tones – Gall stones – Neutron Activation Analysis – INAA – Short irradiation – Long irradiation}, url = {https://jsrs.journals.ekb.eg/article_57632.html}, eprint = {https://jsrs.journals.ekb.eg/article_57632_905293d8409e5d88a35342527e5e5067.pdf} } @article { author = {Musbah, Hanahem and Abouelkhair, Wafaa and Yousef, Shymaa and Moustafa, Elham and Hasan, Amr}, title = {Screening of Antifungal Activities of Five Algal Crude Extracts}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {318-338}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.57633}, abstract = {In the present study, four species of marine algae were collected during different seasons for one year (September 2013 to August 2014). The collected species belonged to Chlorophyta (Ulva lactuca), Phaeophyta (Sargassum denticulatum, Hormophysa triquetra) and Rhodophyta (Hypnea cornuta) in addition to one blue- green alga from freshwater (Spirulina platensis) was obtained from stock at Hydrobiology Lab, Qanater, Khayria, Qalubia, Egypt. Crude algal extracts were prepared by using different solvents (methanol, ethanol and chloroform) in addition to hot water and cold water extracts. The crude algal extracts were examined for their antifungal efficacy against oral Candida species (Candida albicans, C.tropicalis,     C.krusei and C.glabrata) using agar well diffusion method. Results revealed that methanol was the best solvent suited for extraction of bioactive compounds from the tested algae. Chlorophyta (ulva lactuca) exhibited the highest antifungal effect followed by Phaeophyta, Rhodophyta and blue green algae. MIC of the most potent algal (ulva lactuca) methanol extract was 62.5 mg/ml and MFC was 125mg/ml for the same alga with all the tested oral Candida species. (comparison was made between MFC value of Ulva lactuca methanol extract with the anti chlorhexidine (0.1mg/ml)(which is a common antimicrobial agents in commercialized oral rinses). by using (PIDG) .The results shown that the Ulva lactuca methanol extract better than PIDG of chlorhexidine.    }, keywords = {Marine algae,antifungal activity,Solvent extracts,Oral Candida species,(MIC) and (MFC)}, url = {https://jsrs.journals.ekb.eg/article_57633.html}, eprint = {https://jsrs.journals.ekb.eg/article_57633_fea1363a1217aeb5ffd89ad9e4d1a14a.pdf} } @article { author = {Shalaby, M. and Yousif, N. and Zayed, H. and Hashem, H. and Wahab, L.}, title = {The effect of Radiation on Thermal conductivity of Nano-Structured PANI/Bi2Te3 Composites.}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {339-357}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.57634}, abstract = {Nano-structured Bi2Te3, Polyaniline (PANI) and PANI/ Bi2Te3 were synthesized by Solvothermal method. The crystallite size, Strain, inter-chain separation and unit cell volume were calculated from the X-ray diffraction (XRD) results by using Win fit and Unit cell software. The Gamma irradiation (γ-rays) with dose 50 KGy affects the peaks positions for the PANI samples whereas; it affects the intensity of Bi2Te3 samples. Thermal conductivity measurements were investigated from the differential scanning calorimeter (DSC) with respect to Indium (In) melting temperature curve. 50 KGy dose does not show a remarkable change in the PANI and PANI/ Bi2Te3 values on contrast the value of Bi2Te3 sample was reduced.  }, keywords = {Solvothermal method,XRD,PANI/Bi2Te3,Gamma Irradiation,thermal conductivity}, url = {https://jsrs.journals.ekb.eg/article_57634.html}, eprint = {https://jsrs.journals.ekb.eg/article_57634_1854c84feffeba8a9234a4aacfce6633.pdf} } @article { author = {B, Ahmed and Zakaria, N.M and Mohamed, D. and Omar, A. and Seif, A.}, title = {Matrix Metalloproteinase-13 (MMP-13): A proposed Tumor Marker in Breast Carcinoma}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {358-366}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.57635}, abstract = {Breast cancer is estimated to account for 31% new onset female cancers. Matrix metalloproteinases (MMPs) are extracellular zinc-dependent endopeptidases involved in the degradation and remodeling of extracellular matrix in physiological and pathological processes. In this study, we aimed to evaluate the use of matrix metalloproteinase-13 (MMP-13) as a potential tumor marker in breast cancer and we also aimed to investigate the role of infection as a cause of carcinogenesis by estimating the incidence of anti-cytomegalovirus IgG antibodies in breast cancer patients. Subjects and Methods: Serum CA15.3, anti-CMV IgG and MMP-13 were measured in 50 breast cancer female patients, 20 female patients with fibroadenoma of breast and 20 healthy age-matched female volunteers. Results: MMP-13 levels showed no significant difference between breast cancer patients and controls; on the other hand MMP-13 levels were significantly higher in fibroadenoma patients compared to controls. CA15.3 levels were significantly higher in breast cancer cases compared to both fibroadenoma and healthy controls. Conclusion: The results of this study show that MMP-13 level is highest among control group, while fibroadenoma group had the lowest MMP-13 level. CA15.3 is still the most useful serum tumor marker in patients with breast cancer.}, keywords = {}, url = {https://jsrs.journals.ekb.eg/article_57635.html}, eprint = {https://jsrs.journals.ekb.eg/article_57635_6deffb35989e0d5676aee72f4749905c.pdf} } @article { author = {Shawky, M. and Wahba,, S. and Heibashy, M.}, title = {Therapeutic Role of Coenzyme Q10 or/and α-lipoic acid on Cardiac Functions in Obese/Hypertensive Rats}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {368-390}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.57636}, abstract = {This study focuses on the relationship between obesity and hypertension and the possible amelioration effects of co-enzyme Q10 (CoQ10) or/and α-lipoic acid (ALA) and their mixture on histological and physiological changes in rat heart. To achieve this purpose, a comparison took place between normal control rats group (20 rats) and obese/hypertensive rats group (24 rats). The obese/hypertensive rats were injected (i.v) with Poloxamer-407(P-407) as a single dose (1g/kg b.wt dissolved in 1ml cold saline) to induce obesity and with the aid of oro-gastric tube 1g sodium chloride salt/kg b.wt/day for 30 days for induction of hypertension. Control rats group (20 rats) were divided into 5 animals (normal control rats subgroup), 5 animals treated with 200mg CoQ10/kg b.wt /day (Normal + CoQ10 rats), 5 rats treated  with 100mg ALA/kg b.wt /day (Normal + ALA rats) and the last 5 animals treated with both antioxidants as the above subgroups (Normal + CoQ10 + ALA) by oro-gastric tube. The 24 obese/hypertensive rats were divided to four subgroups, the first subgroup (6 obese/hypertensive rats), the second subgroup (6 rats) was treated with 200mg CoQ10/kg/b.wt/day (obese/hypertensive rats + CoQ10 rats), the third (6 rats) was treated with 100mg ALA/kg b.wt/day (obese/hypertensive rats + ALA rats) and the last 6 animals were treated with both antioxidants as above described (obese/hypertensive rats + CoQ10 + ALA). All rats were dissected after 4 week experimental duration. Histological alterations in cardiac tissue of obese/hypertensive rats included lack of striation of myocytes with pyknotic nuclei; interstitial edema; congested blood vessels and mononuclear cellular infiltration in expanded intracellular spaces.  After the induction of obesity and hypertension in rats and in comparison to normal control animals, the results showed significant (P˂0.05) increase in serum concentrations of cholesterol, triglycerides, HDL-cholesterol and LDL-cholesterol. Also, remarkable increments in the serum heart enzymes activities of creatine kinase (CK), creatine kinase -MB (CK-MB), lactate dehydrogenase (LDH) and aspartate aminotransferase (AST).  The increment of serum levels of heart fatty acid binding protein (H-FABP) and endotheline-1 (ET-1) occurred. On the other hand, a significant (P˂0.05) decrease in the level of serum total nitric oxide was recorded in obese/hypertensive rats compared with those corresponding normal control ones. When obese/hypertensive rats subgroups were treated with CoQ10 or/and ALA, considerable ameliorative effects in all previous studied parameters were pronounced dependent on certain mechanisms discussed according to available recent researches. Moreover, histological studies of the heart also revealed a definite ameliorative effect of these antioxidants as regards tissue damage and structural integrity.  }, keywords = {Obesity/hypertension,Poloxamer 407,Sodium chloride salt,CoQ10,ALA,Rats}, url = {https://jsrs.journals.ekb.eg/article_57636.html}, eprint = {https://jsrs.journals.ekb.eg/article_57636_db3ed2bf5b59a5394fc1d0a79f4ac006.pdf} } @article { author = {Zanaty, Mohamed and El-Desoky, Tarek and Diab, Hanan and Mostafa, Kassem}, title = {Evaluation of the Quality Control and Quality Assurance in Mammography mobile Unit}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {391-402}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.57770}, abstract = {The aim of this study was to undertake a comprehensive evaluation of selected mammography unit. The materials used mammography machine Philips, multi-electrometer, target and filter combinations W/Rh, Mo/Rh and Mo/Mo and Aluminum layers. The quality control assessment was performed on the selected machine. The assessment was done included kV accuracy and reproducibility and Half Value Layer measurement. The results obtained confirmed that the machine is workingcorrectly and was within acceptable performance criteria. The results of the physical parameters indicated a deviation of tube potential for the examined tube from the nominal values with the standard deviation (± 5%), except the few values exceeds this levels, and the conclusion is that some adjustments showed be done and the have value layer at the nominal tube potential (28kV) was in agreement with the published values.    }, keywords = {Key words: Mammography,QC/QA,accuracy and reproducibility,HVL,kilovoltage,machine current}, url = {https://jsrs.journals.ekb.eg/article_57770.html}, eprint = {https://jsrs.journals.ekb.eg/article_57770_b3b88c14a3655416a19b84c52b89189a.pdf} } @article { author = {El Sayed, Mona and Abd El Dayem, Samiha and Zaazaa, Asmaa and Ahmed, Hanaa}, title = {Studying the behavioral changes in schizophrenic rats induced by chronic exposure to ketamine}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {403-411}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.57771}, abstract = {Schizophrenia is a chronic and highly complex psychiatric disorder characterised by cognitive dysfunctions, negative and positive symptoms. The major challenge in schizophrenia research is lack of suitable animal models that mimic the core behavioural aspects and symptoms of this devastating psychiatric disorder. In this study, we used classical and atypical antipsychotic drugs to examine the predictive validity of ketamine-enhanced immobility in forced swim test (FST) as a possible animal model for the negative symptoms of schizophrenia. Repeated administration of a subanaesthetic dose of ketamine (0.1 mg / kg b.wt.) for 60 days enhanced the duration of immobility in FST 24 h after the final injection. Suggesting that the effects of ketamine on the duration of immobility in this study was neither due to motor dysfunction nor peripheral neuromuscular blockade. Our results suggest that repeated treatment with subanaesthetic doses of ketamine enhance the duration of immobility in FST, which might be a useful animal model for the negative symptoms (particularly the depressive features) of schizophrenia.                                                                                                                           }, keywords = {Key words: Schizophrenia,Ketamine,forced swim test,Rats}, url = {https://jsrs.journals.ekb.eg/article_57771.html}, eprint = {https://jsrs.journals.ekb.eg/article_57771_c9177691d9a41ed3a34215f94ecee834.pdf} } @article { author = {Mahareek, Omnia and Fahmi, Abdelgawad and Abdur-Rahman, Mariam and Shemis, Mohamed}, title = {Synthesis, Characterization and Optimization of PCL ˗ based Nanocapsules for Delivery of Anticancer Chemotheraputic Drug}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {412-423}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.57774}, abstract = {Nanocapsules based drug delivery system has provided an efficient tools in cancer treatment in recent times. The toxicity of anticancer drugs can be decreased through nano-encapsulation using polymeric nanocapsules. This study aimed to synthesis, optimization and characterization of doxorubicin (Dox) loaded biodegradable polycaprolactone (PCL) nanocapsules. Dox loaded PCL nanocapsules were prepared by double emulsion method using dichloromethane as the organic solvent, and polyvinyl alcohol as the external aqueous phase. Formulation parameter such as the effect of weight ratio of drug to polymer was optimized for the synthesis of Dox-PCL nanocapsules. Different weight ratio of Dox loaded PCL nanocapsules (1:20), (1:50) and (3:10) were prepared. Dox-PCL nanocapsules of weight ratio of 3:10 mg had higher DL of 16.88 % than other cases and its average size determined by dynamic light scattering (DLS) was 212 nm. The TEM image revealed that the prepared nanocapsules were spherical in shape in all cases. Also, ZPs were greater in case of Dox-PCL with ratio of 3:10 mg than other cases, which suggests good stability these synthesized nanocapsules. Finally, these results indicate that the properties such as DL %, morphology, size and surface charge of the nanocapsules colloidal suspension were better with decreasing the amount of PCL and increasing the amount of Dox.    }, keywords = {Doxorubicin,Polycaprolactone,Double emulsion,Nanocapsules,Chemotherapeutic drug}, url = {https://jsrs.journals.ekb.eg/article_57774.html}, eprint = {https://jsrs.journals.ekb.eg/article_57774_c610cf9aa2209dfa562fc961e2871ab3.pdf} } @article { author = {Elshamy, Marwa and M, ELKhallal and Husseiny, Sherif and Farroh, Khaled}, title = {Application of nano-chitosan NPK fertilizer on growth and productivity of potato plant}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {424-441}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.58522}, abstract = {Nanofertilizers improved technology for controlling release and target delivery of agrochemicals to achieve greater improvement in plant crop with lower environmental impacts. The effect of foliar application of chitosan (CS) nanoparticles loaded with nitrogen, phosphorus and potassium (NPK) on growth and yield parameters, chemical constituents and nutrients content of potato plants (spunta) grown in sandy loam soil were studied. It was applied to leaf surfaces, avoiding direct interaction with soil systems. The uptake and translocation of nanoparticles inside potato plants was investigated by transmission electron microscopy. The results revealed that nanoparticles were taken up and transported through phloem tissues. The obtained results could be summarized as follows: Foliar application with Nano CS-NPK levels (Nano 10, 50 and 100%) significantly increased all the growth and yield parameters, photosynthetic pigments, chemical constituents of potato tuber at harvest, and macronutrients in potato leaves and tubers as compared with the control treatment. The highest effective treatment in this respect was 10% Nano CS-NPK as compered with the other two levels. Thus, accelerating plant growth and productivity by application of nanofertilizers can open new perspectives in agricultural practice.  }, keywords = {Nanofertilizers,CS-PMAA,Chitosan polymethacrylic acid,NPK: Nitrogen (N), Phosphorus (P) and Potassium (K),transmission electron microscopy}, url = {https://jsrs.journals.ekb.eg/article_58522.html}, eprint = {https://jsrs.journals.ekb.eg/article_58522_dc8f811c93093225cedceb6bd37bfc65.pdf} } @article { author = {Abdel-Samad, Hesham and Mahmoud, Huda and Alazaly, Ahmed and Monir, Hany and Abdel-Shafi, Ayman}, title = {Spectroscopic Studies on the inclusion complex formation between 2,4-dihydroxyquinoline and cyclodextrin derivatives}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {442-452}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.58525}, abstract = {Inclusion of 2,4-dihydroxyquinoline in a variety of cyclodextrins with different cavity dimensions is studied. It has been found that excited state proton transfer is strongly affected upon the inclusion of 2,4-dihydroxyquinoline in the nano cavities of cyclodextrin derivatives. Molecular encapsulation of 2,4-dihydroxyquinoline by -, , and methyl -cyclodextrins in aqueous media has been studied by steady state absorption and fluorescence emission techniques. It has been found that the fluorescence intensity at 360 nm increases in case of inclusion in -CD. On the other hand, the band at 360 nm decreases with concomitant increase of the fluorescence intensity at about 325 nm in case of the inclusion in -CD and M-CD. Calculation of the association constant shows that inclusion in -CD is higher than in case of M-CD and -CD    }, keywords = {Hydroxyquinoline,Inclusion complexes,cyclodextrins,Spectrophotometry,Benesi-Hildebrand}, url = {https://jsrs.journals.ekb.eg/article_58525.html}, eprint = {https://jsrs.journals.ekb.eg/article_58525_2432f3d156e0384c775801e2e04d8142.pdf} } @article { author = {Sadak, E. and El-Komy, D. and Motawie, A. and Darwish, M. and Ahmed, S. and Mokhtar, S.}, title = {PVC - clay nanocomposites: Preparation, mechanical and thermal properties}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {453-468}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.58526}, abstract = {Poly (vinyl chloride) (PVC) nanocomposite have been prepared via solution technique. The nanocomposite structure based on the used modifier type and content was characterized with (XRD), (TEM) and (FTIR) spectroscopy. The results indicate the interaction of PVC into the clay layers giving an exfoliated PVC nanocomposites. FTIR data of the composites did not show any remarkable change in PVC.  The influence of the modifier content (i.e. 1, 2, 3, 4, 5, and 6 wt %) and type on the PVC was tested through physico-mechanical properties and thermal stability. The study demonstrated improved mechanical properties and thermal stability for the PVC/ carboxylated salts (3 wt %) composites compared with those of octadecyl amine (ODA) at the same loading. PVC/clay-ODA composite had worse thermal stability than that of unfilled PVC. Incorporation adipate acid salt (3%) results in a significant improvement of the thermal stability of PVC at 800oC.  }, keywords = {PVC nanocomposites,organoclay,sodium salts of adipic and sebacic acids,mechanical and thermal properties}, url = {https://jsrs.journals.ekb.eg/article_58526.html}, eprint = {https://jsrs.journals.ekb.eg/article_58526_1b19e407b70f709f071eed18e620e77e.pdf} } @article { author = {Ismail, Mahmoud and Farouk, H. and Salem, M. and Ashery, A. and Battisha, I.}, title = {Optical properties of Er3+ doped phosphate glasses}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {469-483}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.58543}, abstract = {Er3+-doped Na-Al-Ba-K phosphate glasses were prepared by melt quenching technique. The absorbance spectrum was measured and hence the absorption coefficient, absorption cross-secion were calculated. The emission cross-section has been evaluated using Mc-Cumber theory. The gain has been evaluated as a function of population inversion which show that  the amplification action would be achieved around 1596 nm for a population inversion of only 20%. The Judd–Ofelt analysis has been carried out and hence the radiative properties of 4I13/2 → 4I15/2 and 4S3/2 → 4I15/2  transitions were obtained. Higher radiative lifetime for the 4I13/2level of Er3+ ion has been noticed compared to the other Er3+doped glasses. These results clearly indicate that the present glasses are suitable for laser as well as optical amplifiers around 543 nm and 1522nm.  }, keywords = {Phosphate glass,Erbium,Judd}, url = {https://jsrs.journals.ekb.eg/article_58543.html}, eprint = {https://jsrs.journals.ekb.eg/article_58543_61bc38ccdf1f1db8bf8d3aa7b9cdd69d.pdf} } @article { author = {Saleh, Sanaa and Halawa, Ossama and Seif Al-den, Rania and Al-hems, Abeer}, title = {Innovation and implementation of fabrics with luminous yarns using weaving machine with jacquard}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {484-493}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.77045}, abstract = {The Victorian era enriched textile design industry with floral designs by many designers who contributed to arts and crafts movements in this era, William Morris is considered as one of the surface textile pioneers whose designs are still masterpieces from century ago until now, Innovative luminous fabric design inspired by William Morris is generated by Adobe Illustrator and implemented by jacquard machines using computer-aided design software to control different weaving parameters, the luminous fiber with a long afterglow is produced by adding the rare-earth strontium aluminate powder to the polymer by a melt spinning process and it’s infrequently used in the industry.      }, keywords = {luminous yarn,jacquard machine,textile design}, url = {https://jsrs.journals.ekb.eg/article_77045.html}, eprint = {https://jsrs.journals.ekb.eg/article_77045_a9fd629df30f52225f752654f063482a.pdf} } @article { author = {Alashaikh, Mohrah}, title = {The Effects of Different Endoglycosidases on Erythrocyte CD44, CD47 and CD147 Purified by Affinity Chromatography}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {494-511}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.77047}, abstract = {Endoglycosidases are enzymes with the ability to cleave certain N-and O- linked glycans attached to glycoproteins. The biochemical structure of some erythrocyte glycoproteins attached carbohydrate chains are not elucidate yet. The aim of this study is to investigate the effects of different endoglycosidases on three purified erythrocyte glycoproteins, CD147, CD47 and CD44, which will also provide clues about the structure of their N-linked glycans. Peptide-N-glycosidase F (PNGaseF), Endo-β-N-acetylglucosaminidase F1 (EndoF1), endo-β-N-acetylglucosaminidase H (EndoH) or Endo-β-galactosidase (Endoβ) was used to digest the glycoproteins purified by antibody high-affinity chromatography, and the results were analysed by sodium dodecyl sulfate polyacrylamide gel electrophoresis. CD147, CD47 and CD44 were purified effectively by BRIC235, BRIC126 and MA103, respectively. PNGaseF caused a significant variation in the electrophoretic mobility of the glycoproteins, while no remarkable effects of Endoβ were detected. EndoH caused a reduction in the molecular weight of CD47 and CD44, although it did not appear to cleave all the glycans. In contrast, EndoH cleaved almost all glycans from CD147. Our results indicate that most of the N-linked glycans of CD147 and CD47 are high-mannose and hybrid types. The findings suggest that a significant amount of CD44 N-glycans are from complex oligosaccharides.  }, keywords = {CD44,CD47,CD147,endoglycosidase,N-glycan, erythrocyte}, url = {https://jsrs.journals.ekb.eg/article_77047.html}, eprint = {https://jsrs.journals.ekb.eg/article_77047_a0dd48ca249867ea26521c6326377f4f.pdf} } @article { author = {Ahmed, Azza and El-Dessouky, Mohamed and Fahmi, Abdelgawad and ElRefaey, Fatma and ElNahass, Yasser}, title = {Detection of Y-Chromosome microdeletions in Egyptian infertile males}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {512-525}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.77051}, abstract = {The major genetic causes in male infertility are chromosomal abnormalities and Y chromosomal microdeletions (YCMs). YCMs occur in approximately 15% of azoospermic patients and 10% of severe oligospermic patients. These microdeletions lead to spermatogenic failure. This study aims to report the incidence of Azoospermia factor (AZF) microdeletions in Egyptian infertile males with severe oligoospermia & non obstructive azoospermia (NOA) using multiplex PCR. One hundred-fifty infertile males were included. Semen analysis, hormonal assay, karyotyping, testicular sperm extraction and testicular biopsy were performed.Y chromosome microdeletions were detected by using multiplex polymerase chain reaction (PCR). Among 150 infertile males; Considering Y chromosome; in severe oligospermic infertile males 3/36 (8.3%) had Y chromosome microdeletions in AZF subregions where; 1/3(33.3%) showed deletions in AZF-c and 2/3(66.7%) showed deletions in both AZF-b+c. However; no deletions were detected in AZF-a region in this group. In NOA group, 21/114(18.4%)  had Y chromsome microdeletions in AZF subregions where;  1/21 (4.8%)  showed deletions in AZF-b region, 2/21 (9.5%) showed deletion in both of AZF-a+b+c regions, 8/21 (38%) showed deletions in AZF-c region only and 10/21 (47.6%) showed deletions in both AZF-b+c regions. Conclusion: The frequency of Y chromosome microdeletions in our studied patients was similar to many ethnic reports. Detection of AZF microdeletions is necessary for proper genetic diagnosis in infertile males. AZFc can help informed decisions regarding positive testicular sperm extraction outcome.      }, keywords = {Male infertility,Y chromosome microdeletions,AZF,NOA,TESE}, url = {https://jsrs.journals.ekb.eg/article_77051.html}, eprint = {https://jsrs.journals.ekb.eg/article_77051_a438fceab394e18bfe6c6ea0de162eff.pdf} } @article { author = {Seif, Gelan and Elshaarawy, Reda and El-Naggar, Mehrez and Mostafa, Tahia and El-Sawia, Emtithal}, title = {Tetrabutylphosphonium-salicyl-imine-chitosan metallo-Schiff bases:Supramolecular architectures as multifunctional pharmacological materials.}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {526-538}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.77052}, abstract = {The current work provides a simple synthetic route for the preparation of poly-(phosphonium-salicyl)-grafted chitosan Schiff bases (PPCSB), its M(II) complexes (M = Cu or Pd) and silver nanobiocomposites (NBCs). The ex-situ protocol was used for preparation of nanosilver (AgNPs) using NaBH4 as a reducing agent then capped either by PPCSB or Pd(II)PPCSB to fabricate NBCs {AgNPs@PPCSB, AgNPs@Pd(II)PPCSB}. Structural, morphological and physicochemical characterizations of the new architectures were examined based upon diverse spectral and microscopic techniques. The antibacterial properties of new compoundswas investigated against gram positive (S. aureus, B.subtilis) and gram negative (E. coli, P. aeruginosa) bacterial strains. Unexpectedly, the M(II)PPCSB complexes were found to be more active against all tested bacterial strains than NBCs (AgNPs@PPCSB, AgNPs@Pd(II)PPCSB). Meanwhile, as revealed from ZOI values, the Cu(II)PPCSB is the most potent bactericidal agent against all tested bacterial strains except E. coli species which is more affected by Pd(II)PPCSB  }, keywords = {tributylphosphinium,ex-situ AgNPs,Cu(II)/ Pd(II) complexes,Nanobiocomposites,antimicrobial activity}, url = {https://jsrs.journals.ekb.eg/article_77052.html}, eprint = {https://jsrs.journals.ekb.eg/article_77052_4d02c3d262452aee08966651e8939c05.pdf} } @article { author = {El-Naggar, Karim and S. Abdel-Samad, Hesham and E. El-Khouly, Mohamed and A. Abdel-Shafi, Ayman and El-Naggar, Karim}, title = {Oxygen quenching of the excited MLCT state of ruthenium (II) bipyridyl heteroleptic complexes and singlet oxygen thereby produced}, journal = {Journal of Scientific Research in Science}, volume = {36}, number = {1}, pages = {539-551}, year = {2019}, publisher = {Ain Shams University, Faculty of Women for Arts, Science and Education}, issn = {2356-8364}, eissn = {2356-8372}, doi = {10.21608/jsrs.2019.205521}, abstract = {Photophysical properties of some heteroleptic bipyridyl ruthenium (II) complexes are investigated.  The lifetimes of the excited triplet metal to ligand charge transfer states, 3MLCT, of the complex ions are about 0.60±0.05 ms with two exceptions where the lifetimes drop to 2.4 ns for [Ru(bpy)2(dmp)]2+, dmp=2,9-dimethyl-1,10-phenanthroline and 1.50 ms for [Ru(bpy)2(dpp)]2+, dpp=4,7-diphenyl-1,10-phenanthroline. The rate constants, kq, for quenching in acetonitrile of the 3MLCT states of these ruthenium complex ions by molecular oxygen, O2(3Sg-), and the variations in the efficiency, fDT, with which excited singlet oxygen, O2*(1Dg), is thereby produced are reported. The quenching rate constants are in the range 1.5- 2.2 x 109 dm3 mol-1 s-1 and efficiencies of singlet oxygen production are in the range 0.55- 0.85. The inverse correlation kq and fDT is not observed for the current set of complexes.}, keywords = {Ruthenium(II) bipyridyl complexes,Singlet oxygen,Quenching}, url = {https://jsrs.journals.ekb.eg/article_205521.html}, eprint = {} }