Delta Journal of Science最新文献_第10页

Isolation, identification and screening of cellulolytic activity of some fungi from different sources and localities in Egypt 埃及不同产地几种真菌纤维素水解活性的分离、鉴定和筛选

Delta Journal of Science Pub Date : 2021-07-01 DOI: 10.21608/djs.2021.206612

M. M. El-Sheekha, Mohammed Y. Bedaiwy, Aya A. El-ngar, EmanW Elgammal

{"title":"Isolation, identification and screening of cellulolytic activity of some fungi from different sources and localities in Egypt","authors":"M. M. El-Sheekha, Mohammed Y. Bedaiwy, Aya A. El-ngar, EmanW Elgammal","doi":"10.21608/djs.2021.206612","DOIUrl":"https://doi.org/10.21608/djs.2021.206612","url":null,"abstract":"Cellulolytic fungi, Cellulolytic activity, Congo red, Clear zone, Screening Cellulases are a series of hydrolytic enzymes that can hydrolyze cellulosic biomass into a simpler sugar. In the present study, thirty-one fungal species were isolated from different places in Al-Gharbia and Aswan governorates. These fungal species were identified and found to belong to twelve genera \"Trichoderma, Cladosporium, Aspergillus, Botritrichom, Rhizopus, Cephalosporium, Fusarium, Penicillium, Mucor, Circinella, Alternaria and Rhodotorula\". All identified fungal species were screened for cellulolytic activity based on clear zone diameter using 0.1% congo red. Out of thirty-one fungal species, 27 species showed cellulolytic activity and the highest activity was recorded by Trichoderma viride and isolate No. 1 of Aspergillus niger. All 27 fungal species were tested for three cellulolytic enzymes as \"carboxymethyl cellulase (CMCase), βglucosidase (βGase), and filterpaper cellulase (FPase)\". The highest total cellulolytic activity for three cellulolytic enzymes was recorded by isolate No. 1 of Aspergillus niger (79.3 U/ml). Among all tested isolates of Aspergillus niger isolate No. 1 isolated from Tanta was the best one.","PeriodicalId":11368,"journal":{"name":"Delta Journal of Science","volume":"293 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78711222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A Home –Made of Static Laser Scattering Experiment for Dopamine Investigations 自制的静态激光散射多巴胺研究实验

Delta Journal of Science Pub Date : 2021-07-01 DOI: 10.21608/djs.2021.211321

R. Ghazy, F. Shehata, F. El-Mekawey, N. Sayed

引用次数: 0

Chemically Crosslinked Polyvinyl Alcohol/ Gelatin Wound Dressing Loaded With Curcumin 化学交联聚乙烯醇/明胶伤口敷料加载姜黄素

Delta Journal of Science Pub Date : 2021-05-01 DOI: 10.21608/djs.2021.194670

E. Kenawy, Abdelbaset Shoker, Zeinab S. Ghaly, M. A. El-Meligy

引用次数: 0

THE ROLE OF EXOPOLYSACCHARIDE PRODUCED BY Pleurotus Sapidus AS MEDICAL AGENT 皂角侧耳胞外多糖的药用作用

Delta Journal of Science Pub Date : 2021-05-01 DOI: 10.21608/djs.2021.197873

Eman H. F. Abd El-Zaher, Alaa M. Abou Zied, Youssef Mohamed, Faten M. A. Semana

{"title":"THE ROLE OF EXOPOLYSACCHARIDE PRODUCED BY Pleurotus Sapidus AS MEDICAL AGENT","authors":"Eman H. F. Abd El-Zaher, Alaa M. Abou Zied, Youssef Mohamed, Faten M. A. Semana","doi":"10.21608/djs.2021.197873","DOIUrl":"https://doi.org/10.21608/djs.2021.197873","url":null,"abstract":"sapidus Mushrooms have been used since centuries for the treatment of different diseases and efforts were made to isolate different compounds from the mushrooms responsible for medicinal activities. Among the mushroom genus Pleurotus is worldwide in distribution due to their medicinal properties such interventions ameliorate hepatic lipid profiles, reduce inflammation and oxidative stress, noticeable antioxidant, antiinflammatory, antimicrobial, antitumor and analgesic properties. These properties are attributed mainly to polysaccharides synthesized by Pleurotus. The aim of current study is to improve of Exopolysaccharide production by Pleurotus sapidus through manipulation of different culture and environmental conditions using response surface methodology (RSM). Plackett–Burman design indicated that; shaking, starch and incubation temperature are the most effective parameters. Box–Behnken RSM indicated that; the optimum concentration for each parameter was: 148.9 rpm for shaking, 30.1g/l starch and 25.2 oC for incubation temperature. After production, EPS was extracted, purified, identified using Fourier transform infrared (FTIR), Nuclear Magnetic Resonance (1HNMR) and High Performance Liquid Chromatography (HPLC). The result indicated that; it consisting of β-(1→3) glucans, β-(1→6) glucans branched, Chitin, Mannans and Galactans with different concentrations in EPS. Exopolysaccharides extracted from Pleurotus sapidus showed antitumor, antiviral, antibacterial, anticoagulant and antioxidant activity.","PeriodicalId":11368,"journal":{"name":"Delta Journal of Science","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78399781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinetic Simulation of He radio frequency capacitively coupled plasma He射频电容耦合等离子体动力学模拟

Delta Journal of Science Pub Date : 2021-05-01 DOI: 10.21608/DJS.2021.190753

M. Shihab, A. Elbadawy, M. Afify, N. El-siragy

引用次数: 0

Petrogenesis and tectonic implications of Seih Syn-tectonic gabbroic intrusion, South Sinia, Egypt: Insights from whole-rock geochemistry, mineral chemistry and P-T estimate 埃及南锡尼亚Seih同构造辉长岩侵入岩的岩石成因及其构造意义:全岩地球化学、矿物化学和P-T估算

Delta Journal of Science Pub Date : 2021-05-01 DOI: 10.21608/djs.2021.192031

M. Ghoneim, Mohamed M. Abu Anbar, D. H. Ramadan, Ahmed E. Masoud

{"title":"Petrogenesis and tectonic implications of Seih Syn-tectonic gabbroic intrusion, South Sinia, Egypt: Insights from whole-rock geochemistry, mineral chemistry and P-T estimate","authors":"M. Ghoneim, Mohamed M. Abu Anbar, D. H. Ramadan, Ahmed E. Masoud","doi":"10.21608/djs.2021.192031","DOIUrl":"https://doi.org/10.21608/djs.2021.192031","url":null,"abstract":"Geothermobarometry, Mineral Chemistry, Wadi Seih, South Sinai, Egypt, ArabianNubian Shield The present work deals with the gabbroic intrusion in Wadi Seih area as a part of the Neoproterozoic Pan-African basement in the southwestern part of Sinai, Egypt. It comprises as small plutons intruded into Seih metamorphic belt. The intrusions comprise hornblende gabbros, anorthositic gabbros, and sometimes occur as coarse-grained gabbros (appenites). These plutons belong to what is known throughout Egypt as Younger Gabbros. The present study includes petrography, whole-rock geochemistry, mineral chemistry, and geothermobarometry. Geochemically, the gabbroic intrusions are derived from tholeiitic magma with minor calc-alkaline affinity. They have the chemical signature of subduction-related arc magmatism formed at an active convergent plate margin by 15–30% of partial melting of garnet lherzolite and to a minor extent of spinel-garnet lherzolite sources, modified by fluids related to a subducting slab. Mineral chemistry indicates that the gabbroic rocks crystallized at a pressure between 2.9 and 4.4 kb and a temperature between 590 °C and 700 °C.","PeriodicalId":11368,"journal":{"name":"Delta Journal of Science","volume":"82 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83930319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

USING NANO TUNGSTEN OXIDE POLYMER COMPOSITE AS A GAMMA RADIATION SHIELDING 采用纳米氧化钨聚合物复合材料作为伽马辐射屏蔽材料

Delta Journal of Science Pub Date : 2021-05-01 DOI: 10.21608/djs.2021.195252

Mayssoun. M. Mourad, Y. Abdou, M. Berber, F. Elhussiny

引用次数: 1

ASSESSMENT OF RAW MATERIALS FOR CEMENT INDUSTRY IN EL SUKHUNA-ZAAFRANA AREA, EASTERN DESERT, EGYPT 埃及东部沙漠el sukhuna-zaafrana地区水泥工业原料评价

Delta Journal of Science Pub Date : 2020-12-01 DOI: 10.21608/djs.2020.147776

H. Harraz, M. Hamdy, A. A. Abu El-Ela, Islam M. El-Hoseiny

引用次数: 0

On Solving Fully Rough Multi-Objective Integer Linear Programming Problems 求解完全粗糙多目标整数线性规划问题

Delta Journal of Science Pub Date : 2020-06-01 DOI: 10.21608/DJS.2020.139224

E. Ammar, A. Emsimir

{"title":"On Solving Fully Rough Multi-Objective Integer Linear Programming Problems","authors":"E. Ammar, A. Emsimir","doi":"10.21608/DJS.2020.139224","DOIUrl":"https://doi.org/10.21608/DJS.2020.139224","url":null,"abstract":"In this paper a suggested algorithm to solve fully rough multi-objectiveinteger linear programming problem [FRMOILP] is described. In orderto solve this problem and find rough value efficient solutions anddecision rough integer variables by the slice-sum method with thebranch and bound technique, we will use two methods, the first one isthe method of weights and the second is e- Constraint method. The basicidea of the computational phase of the algorithm is based onconstructing two LP problems with interval coefficients, and then to fourcrisp LPs. In addition to determining the weights and the values of e-constraint. Also, we reviewed some of the advantages and disadvantagesfor them. We used integer programming because many linearprogramming problems require that the decision variables are integers.Also, rough intervals (RIs) are very important to tackle the uncertaintyand imprecise data in decision making problems. In addition, theproposed algorithm enables us to search for the efficient solution in thelargest range of possible solutions range. Also, we obtain N suggestedsolutions and which enables the decision maker to choose the bestdecisions. Finally, two numerical examples are given to clarify theobtained results in the paper.","PeriodicalId":11368,"journal":{"name":"Delta Journal of Science","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80177789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Isolation and genetic identification of Cylindrotheca closterium algae from Alexandria coastal region 亚历山德里亚沿海圆柱藻的分离与遗传鉴定

Delta Journal of Science Pub Date : 2020-06-01 DOI: 10.21608/DJS.2020.139230

R. Ramadan, H. Khairy, M. Halawa, A. Haider

{"title":"Isolation and genetic identification of Cylindrotheca closterium algae from Alexandria coastal region","authors":"R. Ramadan, H. Khairy, M. Halawa, A. Haider","doi":"10.21608/DJS.2020.139230","DOIUrl":"https://doi.org/10.21608/DJS.2020.139230","url":null,"abstract":"Text Cylindrotheca closterium alga belongs to family Bacillariaceae, orderBacillariales, class Bacillariophyceae and phylum Bacillariophyta. In this studyCylindrotheca closterium alga was isolated from Alexandria coastal region(Eastern Harbor) using two methods: dilution method and streak and sprayplating technique. Isolated algal cells were cultured on Guillard F2 liquidmedium. Morphological identification was carried out by light microscope andscanning electric microscope. Algal cells were found to be wrapped by theraphe canal of valves, which is a typical characteristic of Cylindrothecaclosterium shape. The cells contained two plastids lying next to each otheralong the longitudinal axis of the cell and apprised to one side of the cell withlobes extending onto the other sides, and the nucleus centrally in between.However, previous studies indicated some morphological variations during thelife cycle of the alga.Genetic identification of Cylindrotheca closterium wascarried out using ribulose-bisphosphate carboxylase gene (rbcL) located in theplastids as molecular marker. Specific PCR primers were used to amplify rbcLgene fragment from total genomic DNA extracted from Cylindrothecaclosterium cells. Amplified rbcL (1177 bp) gene fragment was purified andsequenced. Nucleotide sequence was compared with Cylindrotheca sequencesavailable in the GenBank. The Genetic distances and multi alignments werecomputed by Pairwise Distance method using Clusteral W software analysis.The nucleotide sequence of amplified rbcL gene showed varied identitypercentages (81, 80 and 78%) with other related sequences in the GenBank.This could be correlated to the observed morphological variations. Previousstudies indicated high sequence divergences of rbcL gene amongCylindrotheca isolates, and numerous nucleotide variations of rbcL genecaused relatively few variation of deduced amino acid sequence. These resultsmay indicate that Cylindrotheca closterium is a species complex as waspreviously evidenced by the variations of rbcL gene.","PeriodicalId":11368,"journal":{"name":"Delta Journal of Science","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80841138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0