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sOLUTION OF THE RAYLEIGH PROBLEM FOR A POWER-LAW NON-NEWTONIAN CONDUCTING FLUID VIA GROUP METHOD

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Applied Mathematics and Mechanics(English Edition) 2002年第6期23卷 639-646页

作者： Mina B.Abd-el-Malek Nagwa A.Badran hossam s.Hassan Department of Engineering Mathematics and Physics Faculty of Engineering Alexandria University Alexandria Egypt Department of Basic and Applied science Arab Academy for Science and Technology and Maritime Transport Alexandria Egypt

An investigation is made of the magnetic Rayleigh problem where a semi_infinite plate is given an impulsive motion and thereafter moves with constant velocity in a non_Newtonian power law fluid of infinite extent. The solution of this highly non_linear problem is obtained by means of the transformation group theoretic approach. The one_parameter group transformation reduces the number of independent variables by one and the governing partial differential equation with the boundary conditions reduce to an ordinary differential equation with the appropriate boundary conditions. Effect of the some parameters on the velocity u(y,t) has been studied and the results are plotted.

关键词： Rayleigh problem group method non_linearity conducting fluid non_Newtonian power law fluid

Biochemical changes in grape rootstocks resulted from humic acid treatments in relation to nematode infection

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Asian Pacific Journal of Tropical Biomedicine 2012年第4期2卷 287-293页

作者： Hosny H Kesba hossam s el-belt.gi Zoology and Agricultural Nematology Department Faculty of AgricultureCairo University Biochemistry Department Faculty of AgricultureCairo University

Objective:To investigate the effect of humic acid on nematode infected,resistant and susceptible grapes in relation to lipid peroxidation and antioxidant mechanisms on selected biochemical parameters known as proactive ***:The grape rootstocks,superior,superior/ freedom and freedom were reacted differently to Meloidogyne incognita and Rotylenchulus reniformis according to rootstock *** weeks after inoculation,two commercial products of humic acid were applied at the rate of(2,4 mL or grams/plant) as soil *** 4 months,nematode soil populations were extracted and counted.A subsample of roots from each plant was stained and gall numbers,embedded stages per root were calculated,final population, nematode build up(Pf/Pi),average of eggs/eggmass were *** of fresh root of each treatment were chemically ***:Freedom reduced significantly the nematode criteria and build *** acid granules appeared to be more suppressive to nematode build up on superior and the higher dose on superior/freedom than liquid *** freedom,all treatments reduced significantly the nematode build up regardless to the material *** higher dose was more effective than the lower *** a result of humic acid applications,the malondialdehyde(MDA) and H_2O_2 contents were significandy reduced after humic acid treatments while the antioxidant compounds glutathione(GsH),ascorbic acid(AsA) and total phenol contents were significandy increased when compared with *** defense enzymes ascorbate peroxidase(AFX),superoxide dismutase(sOD),catalase(CAT) and polyphenol oxidase(PPO) showed significant increase in their specific activities in treated plants compared with nematode treated ***:Humic acid treatments improve we yield of grape by increasing the contents of antioxidant compounds and the specific activities of antioxidant enzymes.

关键词： Meloidogyne incognita Rotylenchulus reniformis Grape Humic acid Oxidative stress Antioxidant enzymes Lipid peroxidation Nematode Grape rootstocks Antioxidant compounds Biochemical parameters Proactive substance MDA sOD

The fractional coupled KdV equations: Exact solutions and white noise functional approach

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Chinese Physics B 2013年第8期22卷 302-308页

作者： hossam A. Ghany A. s. Okb el Bab A. M. Zabel Abd-Allah Hyder Department of Mathematics Faculty of Science Taif UniversityTaif Saudi Arabia Department of Mathematics Faculty of Industrial Education Helwan UniversityCairo Egypt Department of Mathematics Faculty of Science Al-Azhar UniversityCairo Egypt Department of Physics and Mathematics Faculty of Engineering Al-Azhar UniversityCairo Egypt

Variable coefficients and Wick-type stochastic fractional coupled KdV equations are investigated. By using the mod- ified fractional sub-equation method, Hermite transform, and white noise theory the exact travelling wave solutions and white noise functional solutions are obtained, including the generalized exponential, hyperbolic, and trigonometric types.

关键词： coupled KdV equations fractional calculus white noise Hermite transform

Parameters Affecting Energy Consumption for Producing High Carbon Ferromanganese in a Closed submerged Arc Furnace

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Journal of Iron and steel Research International 2014年第7期21卷 666-672页

作者： Azza Ahmed hossam Halfa Mohamed K.el-Fawakhry Hoda el-Faramawy Mamdouh Eissa steel Technology Metallurgical Research and Development Institute

The power consumption is considered to be the most important factor affecting the production cost of fer romanganese alloy. Different parameters affecting the energy consumption for industrial production of high carbon ferromanganese HCFeMn were investigated in a closed submerged arc furnace. The analysis of industrial data revealed that the most energy consumed factors were the direct reduction by solid carbon, Boudouard reaction, metal and slag formation, and decomposition of fluxing materials （limestone and dolomite）. To reduce the energy con- sumption and minimize the energy losses in the production process of HCFeMn, it was recommended to use Mn blend with minimum Mn to Fe ratio of 6 and lower siO2 content or higher basicity. The added coke must be adjusted according to the material balance to prevent the over-coke and to minimize the highly endothermic ＂Boudouard reac tion＂. In addition, it was recommended to work at basic slags with the ratio of （CaO＋MgO） to si（）2 equal to 1.0- 1.2 instead of much higher slag basicity. Furthermore, the mass losses had to be minimized through adjusting the handling and charging process and to take care of all metal produced.

关键词： high carbon ferromanganese production energy consumption carbonate decomposition Boudouard reaction slag basicity energy loss

Genetic Variability and Phenotypic Correlations study among Grain Quality Traits and Mineral elements Concentrations in Colored and Non-Colored Rice (Oryza sativa L.)

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Phyton-International Journal of Experimental Botany 2024年第7期93卷 1733-1748页

作者： Adel A.Rezk Mohamed M.el-Malky Heba I.Mohamed hossam s.el-belt.gi Agricultural Biotechnology Department College of Agricultural and Food ScienceKing Faisal UniversityAl-Ahsa31982Saudi Arabia Plant Pathology Research Institute Agriculture Research CenterGiza12619Egypt Rice Research and Training Center Field Crop Research InstituteAgriculture Research Center33717Egypt Biological and Geological sciences Department Faculty of EducationAin Shams UniversityCairo11511Egypt Biochemistry Department Faculty of AgricultureCairo UniversityGiza12613Egypt

Twenty-four rice genotypes were examined to assess genetic variability,heritability,and correlations for seven-grain quality traits,eight nutritional elements,and *** revealed signiﬁcant differences for the quality traits *** every trait under study,the phenotypic coefﬁcient of variation was higher than the correspon-dence genotypic coefﬁcient of *** in a broad sense varied from 29.75%for grain length to 98.31%for the elongation *** percentage recovery had a highly signiﬁcant positive correlation with milling and head rice ***,milling percentage had a highly positive correlation with head rice *** amylose percentage,all the genotypes belonged to low amylose except the Hassawi-1 variety,which had intermediate amylose *** nutrition contents of magnesium(Mg),sodium(Na),potas-sium(K),calcium(Ca),copper(Cu),manganese(Mn),zinc(Zn),iron(Fe),or protein percentage gave different variations for 24 rice genotypes under all the nutritional *** the 24 genotypes,ten rice genotypes–HighNutrient-1,HighNutrient-2,HighNutrient-9,HighNutrient-8,HighNutrient-3,Hassawi-2,HighNutrient-7,HighNutrient-6,Hassawi-1,and HighNutrient-4–had the highest heist value for all nutritional and protein con-tents,and could be used as a donor to improving new *** was a positive and signiﬁcant correlation between magnesium Mg,K,Zn and ***,K had a positive correlation with zinc Zn,Fe,and protein *** analysis was divided into two groups:theﬁrst group included all genotypes rich in nutri-ents,while the remaining genotypes with low nutritional content were included in the second group.

关键词： Amylose cluster analysis genotypes grain quality mineral nutrition rice

Conventional Breeding and Molecular Markers for Blast Disease Resistance in Rice (Oryza sativa L.)

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Phyton-International Journal of Experimental Botany 2023年第3期92卷 725-746页

作者： Adel A.Rezk Mohamed M.el-Malky hossam s.el-belt.gi Mohammed Al-daej Kotb AAttia Agricultural Biotechnology Department College of Agricultural and Food ScienceKing Faisal UniversityAl-Ahsa31982Saudi Arabia Plant Pathology Research Institute Agriculture Research CenterGiza12619Egypt Rice Research and Training Center SakhaField Crops Research InstituteAgricultural Research CenterKafr El-Sheikh33717Egypt Biochemistry Department Faculty of AgricultureCairo UniversityGiza12613Egypt Center of Excellence in Biotechnology Research King Saud UniversityRiyadh11451Saudi Arabia Rice Biotechnology Laboratory Rice Research DepartmentField Crops Research InstituteARCKafr EL-Sheikh33717Egypt

Monogenic lines,which carried 23 genes for blast resistance were tested and used donors to transfer resistance genes by crossing *** results under blast nursery revealed that 9 genes from 23 genes were susceptible to highly susceptible under the three locations(sakha,Gemmeza,and Zarzoura in Egypt);Pia,Pik,Pik-p,Piz-t,Pita,Pi b,Pi,Pi 19 and Pi ***,the genes Pii,Pik-s,Pik-h,Pi z,Piz-5,Pi sh,Pi 3,Pi 1,Pi 5,Pi 7,Pi 9,Pi 12,Pikm and Pita-2 were highly resistant at the same *** analysis confirmed the results,which divided into two groups;the first one included all the susceptible genes,while the second one included the resistance *** the greenhouse test,the reaction pattern of five races produced 100%resistance under artificial inoculation with eight genes showing complete resistance to all *** completely resistant genes:Pii,Pik-s,Piz,Piz-5(=bi2)(t),Pita(=Pi4)(t),Pita,Pi b and Pi1 as well as clustering analysis confirmed the *** the F1 crosses,the results showed all the 25 crosses were resistant for leaf blast disease under field ***,the results in F2 population showed seven crosses with segregation ratio of 15(R):1(s),two cross gave segregated ratio of 3 R:1 s and one gave 13:*** the identification of blast resistance genes in the parental lines,the marker K3959,linked to Pik-s gene and the variety IRBLKs-F5 carry this gene,which was from the monogenic *** results showed that four genotypes;sakha 105,sakha 103,sakha 106 and IRBLKs-F5 were carrying Pik-s gene,while was absent in the sakha 101,sakha 104,IRBL5-M,IRBL9-W,IRBLTACP1 and IRBL9-W(R)*** for Pi 5 gene,the results showed that it was present in sakha 103 and sakha 104 varieties and absent in the rest of the *** addition,Pita-Pita-2 gene was found in the three Egyptian genotypes(sakha 105,sakha 101 and sakha 104)plus IRBLTACP1 *** F2 generation,six populations were used to study the inheritance of blast resistance and s

关键词： Biotechnology tools clustering analysis monogenic lines resistance genes breeding Oryza sativa L.

Acaricidal activity of different extracts from syzygium cumini ***(Pomposia) against Tetranychus urticae Koch

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Asian Pacific Journal of Tropical Biomedicine 2011年第5期1卷 359-364页

作者： Abd el-Moneim MR Afify hossam s el-belt.gi sayed A Fayed Emad A shalaby Department of Biochemistry Faculty of AgricultureCairo University

Objective:To investigate the acaricidal activity of different extracts from syzygium cumini(***)(Pomposia)againsst Tetranyckus urticae Koch(71 urticae)and the biochemical changes in antioxidants ***:six extracts of ***(Pomposia)at concentrations of 75,150 and 300μg/mL were used to control ***(Koch).Results:The ethanol extract showed the most efficient acaricidal activity agent against ***(98.5%)followed by hexane extract(94.0%),ether and ethyl acetate extract(90.0%).The LC_(50)values of the promising extract-were 85.0,101.0,102.0 and 98.0μ/mL,*** activities of enzymes including ascorbate peroxidase(APX),peroxidase(POD),superoxide dismutase(sOD)and catalase(CAT)in susceptible mites were *** activities of all antioxidant enzymes reach the maximum value in mites at LC_(50)with ethanol and ethyl acetate extracts,***:The extract of *** has acaricidal acivity against ***,and the ethanol extract is the most efficient.

关键词： Tetranychus urticae syzygium cumini successive extracts Antioxidant enzymes

Biochemical changes in phenols,flavonoids,tannins,vitamin E,β-carotene and antioxidant activity during soaking of three white sorghum varieties

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Asian Pacific Journal of Tropical Biomedicine 2012年第3期2卷 203-209页

作者： Abd el-Moneim MR Afify hossam s el-belt.gi samiha M Abd el-salam Azza A Omran Department of Biochemistry Faculty of AgricultureCairo University Department of Crops Technology Food Technology Research InstituteAgricultural Research CenterEgypt

Objective:To investigate the changes in total phenols,flavonoids,tannins,vitamin E, β-carotene and antioxidant activity during soaking of three white sorghum ***: The changes in total phenols,total ilavonoids,tannins,phenolic acids compounds,flavonoid components,vitamin E,P-carotene and antioxidant activity during soaking of sorghum grains were ***:Total phenols,total flavonoids,tannins,vitamin E,P-carotene and antioxidant activity in raw sorghum were ranged from 109.21 to 116.70,45.91 to 54.69,1.39 to 21.79 mg/100 g,1.74 to 5.25,0.54 to 1.19 mg/kg and 21.72%to 27.69%and 25.29%to 31.97%,respectively. The above measured compounds were significantly decreased after soaking.p-Hydroxybenzoic acid,vanillic acid,syringic acid and cinnamic acid represent the major phenolic acids in Dorado *** ferulic acid,p-coumaric acid,gallic acid and caffeic acid represent the major phenolic acids in *** the other hand,protocatechuic acid represents the major phenolic acids in *** flavonoids components,Dorado was the highest variety in kampferol and naringenin while shandaweel-6 was the highest variety in luteolin, apigenin,hypersoid,quercelin and ***,giza-15 was the highest variety in catechin. Phenolic acids,flavonoid compounds and antioxidant activities were decreased after soaking. Conclusions:sorghum varieties have moderate quantities from total phenols,total flavonoids, tannins,phenolic acids compounds,flavonoid components,vitamin E,P-carotene and antioxidant activity which decreased after soaking.

关键词： sorghum soaking Total phenols Flavonoids Tannins Vitamin E β-carotene Antioxidant activity Phenolic acids Flavonoid components Biochemical change

Layered software Patterns for Data Analysis in Big Data Environment

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International Journal of Automation and computing 2017年第6期14卷 650-660页

作者： hossam Hakeem Faculty of Computing and Information Technology King Abdulaziz University JeddahSaudi Arabia

The proliferation of textual data in society currently is overwhelming, in particular, unstructured textual data is being constantly generated via call centre logs, emails, documents on the web, blogs, tweets, customer comments, customer reviews, *** the amount of textual data is increasing rapidly, users ability to summarise, understand, and make sense of such data for making better business/living decisions remains challenging. This paper studies how to analyse textual data, based on layered software patterns, for extracting insightful user intelligence from a large collection of documents and for using such information to improve user operations and performance.

关键词： Big data data analysis patterns layered structure data modelling