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Effects of AG1 and AG2 QTLs on Nonstructural Carbohydrate and Seed management Options for Rice Seedling Growth and Establishment under Flooding Stress

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Rice science 2020年第6期27卷 515-528页

作者： Satyen mONDAL m.Jamil Hasan Tofayel Ahmed m.Giashuddin miah Pompe C.Sta Cruz abdel m.ISmAIL International Rice Research Institute DAPO Box 7777Metro Manilathe Philippines Bangladesh Rice Research Institute Gazipur 1701Bangladesh University of the Philippines Los Banos CollegeLaguna 4031the Philippines Bangabandhu Sheikh mujibur Rahman Agricultural University Gazipur 1706Bangladesh

Rice(Oryza sativa)plants acquired excess photosynthates in the form of nonstructural carbohydrates(NSCs)in their stems and *** keen interest in rice NSC,the dynamics of NSC accumulation,translocation and re-accumulation have not yet been well ***1 and AG2 QTLs associated with flooding tolerance through catalyzing starch into soluble sugar in germinating *** we conducted three experiments,greenhouse and field to lay the groundwork for large-scale diversity studies on grain NSC and some agronomic traits under direct-seeded rice(DSR)system,using elite lines incorporating AG1,AG2 and AG1-AG2 QTLs into the popular varieties PSB Rc82 and Ciherang-Sub1 along with the donors Kho Hlan On(AG1)and ma-Zhan Red(AG2).In germinating seedlings,soluble sugars increased,while starch concentration decreased gradually especially in the tolerant checks and AG1-AG2 introgression lines under flooded *** sugar accumulation in stem started to increase from the vegetative stage and peaked at the panicle initiation stage then gradually decreased towards the maturity *** Sub1-AG lines had higher sugar and starch concentrations at different growth stages than other genotypes in wet season 2016 and dry season *** survival rate was positively correlated with the stem NSC at the early vegetative stage(21 days after sowing),and stem NSC was positively associated with plant height at different growth *** the tested seeding rate,the most suitable seeding rate,4 g/m2 with shallow burial depth(0.5 cm),resulted in better seedling establishment,relatively higher seedling vigor index and higher leaf area index under flooding in DSR *** of AG1-AG2 QTLs had no any negative impact on nonstructural carbohydrate,germination rate,and growth and biomass production.

关键词： anaerobic germination crop establishment direct-seeded rice flooding nonstructural carbohydrate seeding rate seeding depth

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Utilization of bromine azide to access vicinal-azidobromides from arylidene malononitrile

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Chinese Chemical Letters 2016年第9期27卷 1515-1518页

作者： Hanan A.Soliman Tamer K.Khatab Farouk m.E.abdel-megeid Photochemistry Department National Research Centre Organometallic and Organometalloid Chemistry Department National Research Centre

An efficient and facile approach for tetrachlorosilane as an in situ mediated transformation via a one-pot, synthesis of vicinal bromoazides through the generation of BrN3 from azidochlorosilane and N-bromosuccinimide in acetonitrile as solvent at ambient temperature is achieved. This catalytic process represents a highly regioselective and high yielding method for the synthesis of 1,2- bromoazides. Thiamine pyrophosphate （TPP） riboswitches regulate essential genes in bacteria by changing conformation upon binding intracellular TPP. molecular docking studies are conducted to understand the orientation and the interaction of each synthesized molecules with TPP riboswitches, 2016 Chinese Chemical Society and Institute of materia medica, Chinese Academv of medical Sciences.

关键词： Azidobromination Tetrachlorosilane Arylidene malononitrile Sodium azide N-Bromosuccinimide

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Types of trematodes infecting freshwater snails found in irrigation canals in the East Nile locality,Khartoum,Sudan

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Infectious Diseases of Poverty 2016年第1期5卷 139-148页

作者： Nidal A.I.mohammed Henry madsen abdel Aziz A.R.m.Ahmed Department of Zoology Khartoum College of Medical SciencesKhartoumSudan Parasitology and Aquatic Diseases Department of Veterinary Disease BiologyFaculty of Health and Medical SciencesUniversity of CopenhagenFrederiksbergDenmark Education Expert Company RiyadhKingdom of Saudi Arabia

Background:The planorbid freshwater snails of the two genera,Biomphalaria and Bulinus-have been vigorously studied due to the role they play as intermediate hosts of *** Sudan specifically,most studies have focused on the chemical and ecological control of the two genera,but few studies have looked at their biological *** study explored the coexistence of other species of freshwater snails and the two genera along with their trematode infections in relation to a number of environmental factors in the East Nile locality,Khartoum state,***:Freshwater snails from irrigation canals(abueshreens)were sampled monthly from January 2004 to December *** snails were examined for trematode infections by cercarial emergence immediately after collection and then weekly for an additional four weeks to allow for the maturation of prepatent *** cover in the study sites as well as the physicochemical characteristics of the water,including temperature,were also ***:A total of 10,493 snails,representing seven species,were *** most abundant species was Biomphalaria pfeifferi,representing 48.6%of the ***,14.1%of the snails were found to be shedding some type of *** species were found to have infections;among these the Bulinus truncatus species was found to be the most heavily infected,with an overall prevalence of 46.2%.Double infections were recorded in only two *** snails and one Cleopatra bulimoides *** different morphotypes of cercariae were recorded,seven of which appeared not to conform to previously described cercariae from *** type 1 was the most common type of cercariae recovered,accounting for 44.3% of all *** density of snails tended to be lower during the summer months than the winter months,except for *** snails,which were not affected by seasonal ***:The findings of this study indicate that besides sc

关键词： Freshwater snails Trematode cercariae Biomphalaria Bulinus East Nile locality Khartoum Sudan

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Validation of the Farsi version of the Death Obsession Scale among nurses

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International Journal of Nursing Sciences 2018年第2期5卷 186-192页

作者： mahboubeh Dadfar Ahmed m.abdel-Khalek David Lester School of Behavioral Sciences and mental Health-Tehran Institute of Psychiatry International CampusSchool of Public HealthIran University of Medical SciencesIran Department of Psychology Faculty of ArtsUniversity of AlexandriaEgypt Psychology Program Stockton UniversityGallowayNJ 08205USA

Objectives:Obsession is one of the important aspects in death *** objective of this study was to estimate the reliability,validity,and factorial structure of the Farsi version of the Death Obsession Scale(DOS).methods:A convenience sample of 106 Iranian nurses from two hospitals at Tehran city,Iran was *** completed the DOS,Death Concern Scale,Collett-Lester Fear of Death Scale,Death Anxiety Scale,Reasons for Death Fear Scale,and Death Depression ***:Cronbach's a for the DOS was 0.95,and 2-week test-retest reliability was *** DOS correlated 0.48,0.46,0.47,0.39 and 0.44 with the last mentioned scales,respectively(Pmponents analysis of the DOS identified three factors accounted for 74.82%of the *** 1 labeled“Death rumination”(34.78%of the variance),Factor 2 labeled“Death dominance”(29.65%of the variance),and Factor 3 labeled“Death idea repetition”(10.38%of the variance).Conclusions:The DOS has good validity and reliability,and it could be recommended for use in clinical and research settings to assess the death obsession in Iranian nurses.

关键词： Death obsession Factorial structure Nurses Reliability Validity

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Boundary-layer non-Newtonian flow over vertical plate in porous medium saturated with nanofluid

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Applied mathematics and mechanics(English Edition) 2011年第12期32卷 1577-1586页

作者： F.m. HADY F. S. IBRAHIm S. m. abdel-GAIED m. R. EID Department of mathematics Faculty of Science Assiut University Assiut 71516 Egypt Department of Science and mathematics Faculty of Education Assiut University The New Valley 72111 Egypt

The free convective heat transfer to the power-law non-Newtonian flow from a vertical plate in a porous medium saturated with nanofluid under laminar conditions is investigated. It is considered that the non-Newtonian nanofluid obeys the mathematical model of power-law. The model used for the nanofluid incorporates the effects of Brown- ian motion and thermophoresis. The partial differential system governing the problem is transformed into an ordinary system via a usual similarity transformation. The numer- ical solutions of the resulting ordinary system are obtained. These solutions depend on the power-law index n, Lewis number Le, buoyancy-ratio number Nr, Brownian motion number Nb, and thermophoresis number Nt. For various values of n and Le, the effects of the influence parameters on the fluid behavior as well as the reduced Nusselt number are presented and discussed.

关键词： non-Newtonian free convection nanofluid porous media

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Entanglement and Entropy Squeezing for moving Two Two-Level Atoms Interaction with a Radiation Field

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Computers, materials & Continua 2021年第3期66卷 2445-2456页

作者： S.abdel-Khalek E.m.Khalil Beida Alsubei A.Al-Barakaty S.m.Abo Dahab Department of mathematics Collage of ScienceTaif UniversityTaif21944Saudi Arabia Department of mathematics Faculty of ScienceSohag UniversitySohag82524Egypt Department of mathematics Faculty of ScienceAl-Azhar UniversityCairoEgypt Department of Physics The University College at AljamoumUmm Al-Qura UniversityMakkahSaudi Arabia Department of mathematics Faculty of ScienceSouth Valley UniversityQena83523Egypt

In this paper,we analyzed squeezing in the information entropy,quantum state fidelity,and qubit-qubit entanglement in a time-dependent *** proposed model consists of two qubits that interact with a two-mode electromagnetic field under the dissipation *** analytical solution is calculated by considering the constants for the equations of *** effect of the general form of the time-dependent for qubit-field coupling and the dissipation term on the temporal behavior of the qubit-qubit entanglement,quantum state fidelity,entropy,and variance squeezing are *** is shown that the intervals of entanglement caused more squeezing for the case of considering the time-dependent ***,the entanglement between the qubits became more substantial for the case of time *** and negativity rapidly reached the minimum values by increasing the effect of the dissipation ***,the amount of variance squeezing and the amplitude of the oscillations decreased considerably when the time dependence increased,but the fluctuations increased *** show the relation between entropy and variance squeezing in the presence and absence of the dissipation parameter during the interaction *** result enables new parameters to control the degree of entanglement and squeezing,especially in quantum communication.

关键词： Entropy squeezing variance squeezing qubit-qubit entanglement moving qubits

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New doubly-periodic solutions for the new integrable non local modified KdV equation

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Journal of Ocean Engineering and Science 2017年第4期2卷 245-247页

作者： S.Shamseldeen m.S.abdel Latif A.A.Hamed H.m.Nour mathematics and Engineering Physics Department Faculty of EngineeringMansoura UniversityPO 35516MansouraEgypt

In this paper,new doubly-periodic solutions will be found for a new integrable nonlocal modified Korteweg-de Vries equation(mKdV).We adopt a technique using a travelling wave transformation which results in different ... 详细信息

关键词： Nonlocal modified KdV equation Travelling waves Jacobi elliptic functions

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Unraveling the nature of sensing in electrostatic mEmS gas sensors

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microsystems & Nanoengineering 2024年第3期10卷 109-117页

作者： Yasser S.Shama Sasan Rahmanian Hamza mouharrar Rana abdelrahman Alaaeldin Elhady Eihab m.abdel-Rahman Systems Design Engineering University of Waterloo200 University Ave WWaterloo N2L 3G1 ONCanada mechanical Engineering Benha Faculty of EngineeringBenha UniversityBenha 13511Egypt

This paper investigates the fundamental sensing mechanism of electrostatic mEmS gas *** compares among the responsivities of a set of mEmS isopropanol sensors before and after functionalization,and in the presence and absence of electrostatic fields when operated in static and dynamic detection *** the static mode,we found that the sensors do not exhibit a measurable change in displacement due to added *** the other hand,bare sensors showed a clear change in displacement in response to isopropanol *** the dynamic mode,functionalized sensors showed a measurable frequency shift due to the added mass of isopropanol *** the presence of strong electrostatic fields,the measured frequency shift was found to be threefold larger than that in their absence in response to the same concentration of isopropanol *** enhanced responsivity of dynamic detection allows the sensors to measure the vapor mass captured by the functional material,which is not the case for static *** detection of isopropanol by bare sensors in static mode shows that change in the medium permittivity is the primary sensing *** enhanced responsivity of dynamic mode sensors when operated in strong electrostatic fields shows that their sensing mechanism is a combination of a weaker added mass effect and a stronger permittivity *** findings show that electrostatic mEmS gas sensors are independent of the direction of the gravitational field and are,thus,robust to changes in *** is erroneous to refer to them as‘gravimetric’sensors.

关键词： mechanism electrostatic measurable

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Thyme oil inclusion levels in a rabbit ration: Evaluation of productive performance, carcass criteria and meat quality under hot environmental conditions

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Animal Nutrition 2018年第4期4卷 410-416页

作者： Ahmed A.A.abdel-Wareth Eman m.m.Taha Karl-Heinz Südekum Jayant Lohakare Department of Animal and Poultry Production Faculty of Agriculture South Valley University Department of Food Science and Technology Faculty of Agriculture South Valley University Institute of Animal Science University of Bonn Department of Agriculture-Animal Science University of Arkansas at Pine Bluff

The aim of this study was to determine the impact of thyme essential oil supplementation in rabbit rations on performance, carcass criteria, and meat quality under hot environmental conditions. A total of 75, 4-week-old Californian male rabbits were assigned to 5 dietary treatments until 12 weeks of *** rabbits were reared in an open house system(38C average ambient temperature and 26% to 35%relative humidity). Treatments were as follows: unsupplemented standard ration, negative control(CON); standard ration supplemented with 1.50 g/kg olive oil as carrier, positive control(POS);POS t 50 mg/kg thyme oil(TO1); POS t 100 mg/kg thyme oil(TO2); and POS t 150 mg/kg thyme oil(TO3). Dietary thyme oil up to 150 mg/kg improved(P mance in comparison to CON. The highest average daily gain and most efficient feed conversion ratio(linear,P me oil improved(P meat was greater(P mpared with CON. Differences were also recorded in oxymyoglobin and metmyoglobin contents in rabbit meat among treatments. In conclusion, thyme oil of a specified composition and to be added to a rabbit ration up to 100 mg/kg using 1.50 g/kg olive oil as a carrier can be used as an efficient feed additive for improving productive performance of rabbits under hot environmental conditions.

关键词： Antioxidant Essential oil meat characteristics Nutrition Production

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Intestinal protozoa and intestinal helminthic infections among schoolchildren in Central Sudan

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Asian Pacific Journal of Tropical medicine 2010年第4期3卷 292-293页

作者： abdel-aziz m.Ahmed Azam A.Afifi Elfatih m.malik Ishag Adam University of Khartoum Sudan Preventive medicine Federal Ministry of HealthSudan

Objective:To determine the prevalence of intestinal parasitic infections and soil-transmitted helminths(STHs) among primary schoolchildren in El dhayga,Central ***:In this cross-sectional study,three fresh faecal samples were collected from each child,which were examined by direct wet mount,brine flotation,formalin-ether and Kato-Katz *** intensity of each STH infection was expressed as the mean of eggs per gram counts of the three ***:In total,142(90.4%) of 157 children harboured at least one type of intestinal *** lumbricoides,Hymenolepis nana,Entamoeba histolytica and Giardia lamblia were the most common parasites found,with prevalence rates of 32.5%,30.6%,33.1%and 19.7%,*** of these 157 children,29(18.5%) harboured more than two intestinal parasitic *** cases of Schistosoma mansoni or Enterobius vermicularis were identified. Conclusions:The study demonstrates significant burden of intestinal protozoa and STH infections in this part of Sudan and highlights the need for preventive and intervention measures.

关键词： Schoolchildern Helminthes Intestinal Protozoa Sudan

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