Tanta University, Faculty ScienceDelta Journal of Science1012-596542120201201Picard and Homotopy Perturbation Methods for Solving the Time-Fractional Schrödinger Equations11413982410.21608/djs.2020.139824ENE. E.EladdadDepartment of Mathematics, Faculty of Science, Tanta University,Egypt.S. M.AljawaznehDepartment of Mathematics, Faculty of Science, Tanta University,Egypt.Journal Article20210115The time-dependent Schrödinger wave equation is the basic partial differential<br />equation of quantum field theory. The study of this equation and its<br />applications play an exceptionally important function in modern physics. From<br />a mathematical point of view, the time-dependent Schrödinger equation is a<br />commutable as mathematics itself. The newest analytical methods to solve<br />linear and nonlinear differential equation is the Homotopy Perturbation Method<br />(HPM) developed to the time-fraction Schrödinger wave equation, which is a<br />combination of homotopy transformation and perturbation. Furthermore,<br />Picard Method (PM) is applied to formulate an approximate iterative solution<br />of the time-fraction Schrödinger equation.https://djs.journals.ekb.eg/article_139824_ce89ceacbac4089c0a9a027da3660f85.pdfTanta University, Faculty ScienceDelta Journal of Science1012-596542120201201Synthesis and characterization of modified Poly(Ethylene-Co-Vinyl Alcohol) and its application as a biocidal agent152013982510.21608/djs.2020.139825ENEl-Refaie S.KenawyPolymer Research Group, Department of Chemistry, Faculty of Science, Tanta University, Tanta, 31527 EgyptMohamed M.AzaamPolymer Research Group, Department of Chemistry, Faculty of Science, Tanta University, Tanta, 31527 EgyptMohamed ABishrPolymer Research Group, Department of Chemistry, Faculty of Science, Tanta University, Tanta, 31527 EgyptJournal Article20210115Co-polymeric materials of Poly(Ethylene-Co-Vinyl Alcohol) with<br />different ratios, P (EVOH), were chemically modified through a<br />series of reactions including chloroacetylation followed by the<br />amination reaction. The acetyl, amine and sulfide groups were<br />estimated through the Fourier Transform Infra-Red Spectra (FTIR)<br />and the Elemental analysis. The antimicrobial activity of the<br />modified copolymers was tested against various species by the cut<br />plug procedure. It was concluded that the modified copolymers<br />exhibited a satisfied antimicrobial activity towards both Gram<br />positive and Gram negative bacteria. The highly observable result<br />was estimated towards the protous species, at a ratio of 27 %<br />Ethylene and 73% Vinyl Alcohol since the inhibition zone<br />reached 41 mm. The antimicrobial activity increased by<br />increasing the percentage of ethyl groups in the copolymeric<br />material.So, the synthesized polymers were used as biocidal<br />agents for water treatment.https://djs.journals.ekb.eg/article_139825_96bc10be34af922422d767bc74f07106.pdfTanta University, Faculty ScienceDelta Journal of Science1012-596542120201201Green synthesis of silver nanoparticles from some cyanobacterial species314413983710.21608/djs.2020.139837ENMostafa M.El -SheekhBotany and Microbiology Department, Faculty of Science, Tanta University, Tanta, EgyptSaly F.GhedaBotany and Microbiology Department, Faculty of Science, Tanta University, Tanta, EgyptGehan A.IsmailBotany and Microbiology Department, Faculty of Science, Tanta University, Tanta, EgyptRehab S.GhobashyBotany and Microbiology Department, Faculty of Science, Tanta University, Tanta, EgyptJournal Article20210115Seven selected cyanobacterial species namely Nostoc linckia, Nostoc<br />muscorum, Oscillatoria acuminata, Anabaena variables, Oscillatoria<br />amphigranulata, Spirulina platensis and Phormidium purpurascens<br />were cultivated on suitable media. In this work, the growth rates of were<br />measured by optical density and dry weight, day after day. Spirulina<br />platensis biomass was harvested at the 16th day which about equaled<br />8.322 g/L dry biomass. Also the biomass of other selected<br />cyanobacterial species was collected at the 22nd day. The present work<br />was designed for the biosynthesis of AgNPs by seven cyanobacterial<br />species using their filtrate and biomass separately. Appearance of<br />surface plasmon band at 400 nm for filtrate and biomass indicated the<br />biosynthesis of AgNPs. UV-vis spectroscopy used to characterize<br />biosynthezied AgNPs and resulted in appearance of surface plasmon<br />band at 400 nm for filtrate and biomasshttps://djs.journals.ekb.eg/article_139837_d2c6aeb8762dddb3f9be7fe14886b581.pdfTanta University, Faculty ScienceDelta Journal of Science1012-596542120201201Source Rock Evaluation of Some Mesozoic and Paleozoic Rocks, Faghur Basin, Neith Field, North Western Desert, Egypt455713984110.21608/djs.2020.139841ENMai A.El SheriefGeology Department, Faculty of Science, Tanta University, 31527 Tanta, EgyptMohamed A.ElbastawesyKhalda Petroleum Company, New Maadi, P.O Box 560, Maadi, Cairo, EgyptAbdelaziz L.AbdeldayemGeology Department, Faculty of Science, Tanta University, 31527 Tanta, EgyptShadia A.MohamedGeology Department, Faculty of Science, Tanta University, 31527 Tanta, EgyptJournal Article20210115Faghur Basin is one of the most important hydrocarbon provinces in<br />the northern Western Desert of Egypt. Some of the Mesozoic (Alam El<br />Bueib and Khatatba formations) and Paleozoic rocks at this basin were<br />evaluated as source rocks based on certain parameters including: the<br />quantity, quality and maturation of the contained organic matter.<br />PetroMode 1D software was used for the construction and prediction of<br />geological and geochemical models. Results from organic geochemical<br />analysis have clarified that the TOC, HI, S1, S2, %Ro and Tmax values of<br />Alam El Bueib source rock units range from 0.27 to 6.39 wt.%, 34 to<br />114 mg/g, 0.12 to 0.38 mg/g, 0.23 to 4.3 mg/g, 0.58 to 1.07 % and 409<br />to 450 oC, respectively. While for the Khatatba source rock these values<br />range from 0.41 to 30.09 wt.%, 27 to 155 mg/g, 0.1 to 0.53 mg/g, 0.15 to<br />26.41 mg/g, 1.02 to 1.09 %, 363 to 454 oC, respectively. As for the<br />Paleozoic source rock they are ranging from 0.53 to 4.83 wt.%, 52 to<br />136 mg/g, 0.06 to 0.4 mg/g, 0.29 to 6.57 mg/g, 0.97 to 1.1 % and 406 to<br />467 oC, respectively. Such results indicate that the Alam El Bueib source<br />rocks are characterized by type (III) kerogen while Khatatba and<br />Paleozoic source rocks are of type (III) kerogen with inputs of kerogen<br />type (II). Burial history analysis indicates that most of these source rocks<br />are mature and reached their maximum temperature at Neogene time.https://djs.journals.ekb.eg/article_139841_b29c6725d65b323e578dde6a20831533.pdfTanta University, Faculty ScienceDelta Journal of Science1012-596542120201201OPTIMIZATION AND CHARACTERIZATION OF ENDOPOLYSACCHARIDES FROM PLEUROTUS Eryngii AND ITS POSSIBLE APPLICATION748113984910.21608/djs.2020.139849ENEman H.F.Abd El-ZaherBotany and Microbiology Department, Faculty of Science,Tanta University, Tanta, EgyptAlaa M.Abou ZiedBotany and Microbiology Department, Faculty of Science,Tanta University, Tanta, EgyptHeba M.AbdouZoology Department,
Faculty of Science, Alexandria University, Alexandria, EgyptAmira A. A.MustafaBotany and Microbiology Department, Faculty of Science,Tanta University, Tanta, EgyptJournal Article20210115The present study aimed to assess the optimization and<br />characterization of endopolysaccharides from Pleurotus eryngii. The<br />results of optimization of culture conditions showed that the highest<br />growth and maximum production of endopolysaccharides of<br />Pleurotus eryngii were achieved with using potato glucose medium,<br />at 12 days incubation period, at temperature 30°C and with using<br />inoculum size three discs (1cm in diameter for each) of Pleurotus<br />eryngii. High performance liquid chromatography analysis detected<br />that endopolysaccharides extracted from Pleurotus eryngii was<br />composed of β-glucans, Chitin, Galactans and Mannans at<br />concentration 36.20, 22.60, 21.60 and 19.60% respectively.<br />Endopolysaccharides extracted from Pleurotus eryngii showed<br />antioxidant activity.https://djs.journals.ekb.eg/article_139849_4ead4c7665a43f9a89412e931123dd62.pdfTanta University, Faculty ScienceDelta Journal of Science1012-596542120201201Effect of chitosan on Fusarium spp. isolated from the soil of the Nile Delta region in Egypt828914284710.21608/djs.2020.142847ENAlaa M.Abou-zeidBotany and Microbiology Department, Faculty of Science, Tanta University, Tanta, Egypt.Saida M.AmerBotany and Microbiology Department, Faculty of Science, Tanta University, Tanta, Egypt.Mohammed YaseirEl-bedawyBotany and Microbiology Department, Faculty of Science, Tanta University, Tanta, Egypt.MohammedElhaittyBotany and Microbiology Department, Faculty of Science, Tanta University, Tanta, Egypt.Ghada M.El-hussieny AliBotany and Microbiology Department, Faculty of Science, Tanta University, Tanta, Egypt.Journal Article20210124Continuous and over use of fungicides to reduce phytopathogens has<br />harmful effect on health and induces natural resistance in plant<br />pathogens. Present study aimed to use natural compound such as<br />chitosan to inhibit growth of Fusarium spp. isolated from soil of Egyptian<br />governments (Kafr El-sheikh, El-Gharbia, and El-Monofia), Fusarium<br />isolates identified based on morphological characteristics as Fusarium<br />oxysporum, F. solani, F. verticolliodes, and F. chlamydosporum. Potato<br />dextrose agar medium (PDA) containing 1.6 g/L of chitosan acetic acid<br />distilled water solution recorded remarkable mycelial growth inhibition<br />(77, 76.7 , 71.4 and 67%) for Fusarium verticilloides, F. oxysporum, F.<br />chlamydosprum and F. solani respectively. Ultrastructural changes in<br />conidia of F. chlamydosprum treated with 1.2g/L chitosan acetic acid<br />distilled water solution were also investigated by means of transmission<br />electron microscopy (TEM) which indicated alterations of cytoplasm and<br />cell wall thickness, compared with control.https://djs.journals.ekb.eg/article_142847_561985d41e220f7f85741b964a519ed3.pdfTanta University, Faculty ScienceDelta Journal of Science1012-596542120201201Antibacterial and antifungal activity of chitosan against Bacillus cereus and Aspergillus niger isolated from some Egyptian canned and fast food909914285410.21608/djs.2020.142854ENSaida MohamedAmerBotany and Microbiology Department, Faculty of Science, Tanta University, Tanta, Egypt.Azza Abd El-RahmanMostafaBiological and Environmental Departmental Science, Faculty of Home Economics, Al-Azhar University, Tanta, Egypt.Maha MahmoudAzabBotany and Microbiology Department, Faculty of Science, Tanta University, Tanta, Egypt.Mostafa FathiShaabanBotany and Microbiology Department, Faculty of Science, Tanta University, Tanta, Egypt.Journal Article20210124A total of (213) canned food samples comprising of Tuna &Sardines,<br />Juices, Tomatoes pasts, Jam and Beef were randomly collected from<br />super stores and local markets in Tanta city from Awlad Ragab,<br />Fatthallah, Munshwi, Casion. Also 24 fast food samples collected from<br />local cafeterias and restaurants in Tanta city from Al Gaan, Abu Deshish,<br />Al Baraka, Abu Owaf. All canned food samples were within expiry date,<br />none of which is bloated, leaking and/or physically damaged. Samples<br />were investigated for some bacteria and fungi using specific media and<br />incubated for suitable incubation period. The results revealed that<br />species of microbes isolated in this study namely Bacillus subtilis,<br />Bacillus cereus, Bacillus atrophaeus., Staphylococcus saprophyticus,<br />Enterococcus faecalis, Staphylococcus epidermides, E. coli, Klebsiella,<br />Salmonella , Aspergillus niger, Penicillium notatum, Candida tropicalis<br />and Saccharomyces cerevisiae. Biochemical tests were performed for all<br />isolates to know the most common isolates (Bacillus cereus and<br />Aspergillus niger). Antimicrobial activities of chitosan were investigated<br />against the most common isolates B. cereus and A. niger. Results<br />revealed that chitosan has antibacterial activity towards Bacillus cereus.<br />The minimum inhibition concentration (MIC) for chitosan was 6.25<br />μg/ml with mean diameter of inhibition zone 8 mm. Also chitosan has<br />antifungal activity toward Aspergillus.niger with minimum inhibition<br />concentration (MIC) 30mg/ml and percent of fungal growth inhibition<br />16.7%.https://djs.journals.ekb.eg/article_142854_4bc6a5492b43f47f4bba700724253be2.pdfTanta University, Faculty ScienceDelta Journal of Science1012-596542120201201Erythrocyte GST activity in type 2 diabetes with and without nephropathy10010714777310.21608/djs.2020.147773ENSahar S.BessaDepartment of Internal Medicine, Faculty of Medicine, Tanta University, Tanta, EgyptEhab M.M.AliDepartment of Chemistry, Division of Biochemistry, Faculty of Science, Tanta University, Tanta, EgyptDoaa M.ElGamalDepartment of Chemistry, Division of Biochemistry, Faculty of Science, Tanta University, Tanta, EgyptHeba I.MakhloufDepartment of Chemistry, Division of Biochemistry, Faculty of Science, Tanta University, Tanta, EgyptTarek M.MohamedDepartment of Chemistry, Division of Biochemistry, Faculty of Science, Tanta University, Tanta, EgyptJournal Article20210210Diabetic nephropathy (DN) is the main cause of chronic kidney disease, and represents the most common and serious complication of diabetes. The occurrence and progression of DN are closely related to oxidative stress. Excessive reactive oxygen species (ROS) induced by hyperglycemia are involved in direct oxidation and damage of deoxyribonucleic acid (DNA), proteins, and lipids. Glutathione S-transferases have central roles in the cellular detoxification of a diverse group of exogenous and endogenous harmful compounds. The present study aims to clarify the possible role of erythrocyte glutathione S-transferase activity in type 2 diabetic patients with and without nephropathy. This study included 60 diabetic patients (20 diabetics with normoalbuminuria, 20 diabetics with microalbuminuria, 20 diabetics with macroalbuminuria) and 20 healthy volunteers as a control group. Glutathione S- transferase (GST), superoxide dismutase (SOD), glutathione peroxidase (GPx), catalase (CAT) activities, and Reduced glutathione (GSH) level were significantly lower in diabetic patients with and without nephropathy as compared to control. Malondialdehyde (MDA) level was significantly higher in diabetic patients with and without nephropathy as compared to control. GST, SOD, GPx, CAT, GSH and MDA were positively correlated with estimated glomerular filtration rate and negatively correlated with albumin creatinine ratio. It was concluded that erythrocyte GST may be used as a biomarker to differentiate between different groups of nephropathy.https://djs.journals.ekb.eg/article_147773_556a3051b098b140dc204145ca7d2796.pdfTanta University, Faculty ScienceDelta Journal of Science1012-596542120201201ASSESSMENT OF RAW MATERIALS FOR CEMENT INDUSTRY IN EL SUKHUNA-ZAAFRANA AREA, EASTERN DESERT, EGYPT10812414777610.21608/djs.2020.147776ENHassan Z.HarrazGeology Department, Faculty of Science, Tanta University, Tanta, EgyptMohamed M.HamdyGeology Department, Faculty of Science, Tanta University, Tanta, EgyptAbdel Salam M.Abu El-ElaGeology Department, Faculty of Science, Tanta University, Tanta, EgyptIslam M.El-HoseinyGeology Department, Faculty of Science, Tanta University, Tanta, EgyptJournal Article20210210In the last few years, cement industry becomes a major player in materials recycling, although it is environmental polluted industry and a great consumer of limestone and clay. Cement manufacturing depends greatly upon chemical and physical characteristics of raw materials, its quality and quantity, simplicity of its extraction and its costs. Ain El Sukhna area is surrounded by the Eocene limestone plateaus from the eastern and western sides. The plateaus are unconformity over the Permo-Triassic of Qiseib Formation that are made mainly of clays. The present study is aiming to preliminary assess the suitability and characterize raw materials (limestone and clay) in the western part of Zaafrana area for cement industry. Samples of limestone and clays were collected and analyzed for their main oxides. Geological and geochemical investigations indicated the suitability of the limestone of Sannor Formation and the Qiseib Formation kaolinitic clay for the cement industry in the area with considerable reserve.https://djs.journals.ekb.eg/article_147776_a7f439ea926f41d9532087998343197d.pdfTanta University, Faculty ScienceDelta Journal of Science1012-596542120201201L-Carnitine ameliorates Cisplatin-induced testicular toxicity in rats12513414962710.21608/djs.2020.149627ENAbeer A.Alm-EldeenDepartment of Zoology, Faculty of Science, Tanta University, EgyptAhmed A.MasoudDepartment of Zoology, Faculty of Science, Tanta University, EgyptSahar K.DarweshDepartment of Histopathology, Egyptian Drug Authority, EgyptSara I.HassanDepartment of Histopathology, Egyptian Drug Authority, EgyptJournal Article20210218Aim: To evaluate the effect of cisplatin on testes of male rats and to evaluate the possible curative effect of L- carnitine as an antioxidant. Methods: 18 male Albino Wistar rats were equally divided into three groups. Group I: control; Group II: cisplatin (7.5 mg/kg) for a single intraperitoneal (IP) injection; Group III cisplatin + 250 mg/kg/day of L-carnitine. Administration of L-carnitine by oral gavage started one day after cisplatin injection and was continued for 14 consecutive days. The rats were euthanized and the left testes were fixed in formaldehyde fixative for histopathological examination and morphometric analysis. The right testes were kept for biochemical tests to evaluate the levels of malondialdahyde (MDA) and reduced glutathione (GSH). Results: Cisplatin-induced impairment of spermatogenesis leading to a decreased in the testicular and gonadal organs weight, a decline in the sperms number, an increase in MDA level and a decrease in GSH level. Histological damage like degeneration, necrosis, arrest of spermatogenesis, congestion, and a decrease in the diameter of the seminiferous tubules were also observed. The rats that received cisplatin and L- carnitine showed non-significant changes in the testicular and gonadal organ weight comparing with the control rats and restored the control level of MDA and GSH. L-carnitine ameliorates the histological changes caused by cisplatin. Seminiferous tubules showed as normal with a non-significant change in their diameter. Conclusion: The findings of this study suggest that cisplatin induced testicular toxicity and L- carnitin could ameliorate this toxicity.https://djs.journals.ekb.eg/article_149627_a61255368f935fe5835ca606e4e2fd07.pdf