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Energy Efficiency of a Solar Green Building Using Bio-Sourced Materials for Indoor Temperature and Humidity Optimization

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Energy Engineering 2025年第1期122卷 41-62页

作者： SoumiaMounir Youssef Maaloufa Abdelhamid k.abbazi ElinaMohd Husini Nurul SyalaAbdul Latip Yak.buAminuDodo Rime ELHarrouni MinaAmazal Asma Souidi Malik. Atigui ahmed Aharoune National School of Architecture Agadir New Complex Ibn ZohrAgadirBP 20732Morocco EMDD CERNE2DUniversity of Mohammed V in RabatEst SaleSaleBP 227Morocco Thermodynamics and Energetics Laboratory Faculty of ScienceIbn Zohr UniversityAgadirBP 8106Morocco Faculty of Built Environment University Sains Islam MalaysiaNilaiBP 71800Malaysia Architectural Engineering Department Najran UniversityNajranBP 1988Saudi Arabia The Centre of Scientific and Engineering Research Najran UniversityNajranBP 1988Saudi Arabia Euro-Mediterranean School of Architecture Design and UrbanismEuro-Mediterranean University of FezFezBP 51Morocco

A clean environment with low carbon emissions is the goal of research on the development of green and sustainable buildings that use bio-sourced materials in conjunction with solar energy to create more sustainable *** is particularly true in Africa,where there aren’t many studies on the *** current study suggests a 90 m^(2) model of a sustainable building in a dry climate that is movable to address the issue of housing in remote areas,ensures comfort in harsh weather conditions,uses solar renewable resources—which are plentiful in Africa—uses biosourced materials,and examines how these materials relate to temperature and humidity control while emitting minimal carbon *** order to solve the topic under consideration,the work.is split into two sections:numerical and experimental *** TRNSYS and Revit,the suggested prototype building is examined numerically to examine the impact of orientation,envelope composition made of bio-sourced materials,and carbon *** a hygrothermal investigation,experiments are conducted to evaluate this prototype’s ***,an examination of the photovoltaic system’s production,consumption,and several scenarios used tomaximize battery life is included in the *** the biosourcedmaterial achieves a thermal transmittance of 0.15(W.m^(-2).k.(-1)),the results demonstrate an intriguing finding in terms of *** value satisfies the requirements of passive building,energy autonomy of the dwelling,and injection in-network.with an annual value of 15,757 ***,compared to the literature,the heating needs ratio is 6.38(k.h/m^(2).an)and the cooling needs ratio is 49(k.h/m^(2).an),both of which are good *** to international norms,the inside temperature doesn’t go above 26℃,and the humidity level is within a comfortable range.

关键词： Bio-sourced materials energy sustainability green architecture built environment

Effect of energy content of the nitraminic plastic bonded explosives on their performance and sensitivity characteristics

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Defence Technology（防务技术） 2019年第4期15卷 488-494页

作者： Svatopluk.Zeman ahmed k. Hussein Marcela Jungova ahmed Elbeih Institute of Enegetic Materials Faculty of Chemical Technology University of Pardubice CZ-532 10 Pardubice Czechia Military Technical College Kobry Elkobbah Cairo Egypt

Information about the forty nine nitraminic plastic bonded explosives(PBXs)and different nitramines were *** of these PBXs are nitramines 1,3,5-trinitro-1,3,5-triazinane(RDX)and β-1,3,5,7-tetranitro-1,3,5-tetrazocane(β-HMX),cis-1,3,4,6-tetranitro-octahydroimidazo-[4,5-d]imidazole(bicyclo-HMX,BCHMX)and e-2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane(e-HNIW,CL-20)which are bonded by polyfluoro-elastomers,polydimethyl-siloxane,poly-glycidyl azide,polyisobutylene,polystyrene-butadiene,poly-acrylonitrile-butadiene and hydroxyl-terminated polybutadiene in addition to a melt cast compositions based on 2,4,*** thirty two of these PBXs the relationships are specified and analyzed between heats of their combustion and relative explosive strengths;by means of these relationships it might be possible to estimate,which groupings in the macromolecule of binder could be liable to their primary fission in the PBXs ***,for forty two of these explosives,the relationships are described and analyzed between their enthalpies of formation and impact sensitivities;here is especially attention paid to PBXs filled by *** rate constants from Vacuum Stability Test(VST)of four nitramines and twenty PBXs are introduced into relationships with their enthalpies of *** to all the mentioned cases,increasing of energy content of the studied explosives leads to increase of the relative explosive strength or initiation reactivity,*** with the opposite trend,the outputs of VST are for BCHMX,where in PBXs are matrices with the esteric plasticizers or the energetic poly-glycidyl *** of RDX or HMX,respectively,into the BCHX PBXs gives ternary PBXs whose thermal stability,in the sense of applied VST,is higher comparing to the original binary explosives.

关键词： Enthalpy Explosive strength Combustion Nitramines PBX Thermal stability

Three-dimensional simulation for problem of penetrative convection near the maximum density

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Journal of Hydrodynamics 2015年第2期27卷 292-303页

作者： HARFASH Ak.l J. ALSHARA ahmed k. Department of Mathematics College of SciencesUniversity of Basrah Petroleum Department College of EngineeringUniversity of Misan

The problem of penetrative convection with the cubic and fifth-order equations of state proposed by Merk.r, Waas and Grigull is studied. Both linear instability and nonlinear stability analyses are performed to assess the suitability of linear theory to predict destabilisation of the convection. The validity of both the linear instability and global nonlinear energy stability thresholds are tested using three-dimensional simulation. The results show that the linear threshold accurately predicts the onset of instability in the basic steady state solution.

关键词： thermal convection linear instability nonlinear stability finite difference scheme

The role of crystal lattice free volume in nitramine detonation

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Defence Technology（防务技术） 2019年第4期15卷 519-525页

作者： Svatopluk.Zeman Ning Liu ahmed k. Hussein Institute of Energetic Materials Faculty of Chemical Technology University of Pardubice CZ-532 10 Pardubice Czech Republic Xi'an Modern Chemistry Research Institute Xi'an Shaanxi 710065 China Military Technical College Kobry Elkobbah Cairo Egypt

Crystal lattice free volumes,△V,of 22 nitramines introduced into relationships of maximal theoretical crystal densities(TMD),detonation velocities(D)and volume heats of explosives(ρ.Q).Values of all these characteristics increase with an increase in the AV ***,more realistic dependencies for the TMD and D values are obtained by using correlations with ratio of the intrinsic molecular volume,Vint,to△V(***/△V),whereby the dependence on the D values reflects their similar relationship to a sum of the positive(VS,max)and negative(VS,min)extremes of the molecular surface electrostatic potentials(VS,∑).Also,directly proportional linear relationships are specified between the VS,∑ values on the one hand,and the △V and Vint/△V values,on the *** is stated that the crystal lattice free volumes might have a similar role in detonation of nitramines as the intermolecular force effect in their molecular crystals(they are as if representative of such forces).

关键词： Crystal lattice Detonation Initiation reactivity Nitramines

A STUDY OF A FULLY COUPLED TWO-PARAMETER SYSTEM OF SEQUENTIAL FRACTIONAL INTEGRO-DIFFERENTIAL EQUATIONS WITH NONLOCAL INTEGRO-MULTIPOINT BOUNDARY CONDITIONS

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Acta Mathematica Scientia 2019年第4期39卷 927-944页

作者： ahmed ALSAEDI Bashir AHMAD Shorog ALJOUDI Sotiris k. NTOUYAS Nonlinear Analysis and Applied Mathematics (NA AM)-Research Group Department of Mathematics Faculty of Science King Abdulaziz UniversityP.O. Box 80203 Jeddah 21589 Saudi Arabia Department of Mathematics University of Ioannina 451 10 Ioannina Greece Nonlinear Analysis and Applied Mathematics (NA AM)-Research Group Department of Mathematics Faculty of Science King Abdulaziz UniversityP. O. Box 80203 Jeddah 21589 Saudi Arabia

In this article, we discuss the existence and uniqueness of solutions for a coupled two-parameter system of sequential fractional integro-differential equations supplemented with nonlocal integro-multipoint boundary conditions. The standard tools of the fixed-point theory are employed to obtain the main results. We emphasize that our results are not only new in the given configuration, but also correspond to several new special cases for specific values of the parameters involved in the problem at hand.

关键词： Coupled system sequential fractional derivative multi-point integral boundary conditions existence

Preparation and Reactions of 2-Methyl-7-（3-methyl-5-oxo-1- phenyl-2-pyrazolin-4-yl）-5-arylthiazolo[3,2-a]- pyrimido[4,5-d]oxazin-4（5H）-one

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Chinese Journal of Chemistry 2011年第7期29卷 1473-1482页

作者： Youssef, Mohamed Salah k. Abbady, Mohamed S. ahmed, Ragaa A. Omar, ahmed A. Chemistry Department Faculty of Science Assiut University Assiut 71516 Egypt

Ethyl 7-amino-3-（3-methyl-5-oxo- 1-phenyl-2-pyrazolin-4-yl）-5-aryl-5H-thiazolo[3,2-a]pyrimidine-6-carboxy- late was hydrolyzed with an ethanolic sodium hydroxide and the sodium salt thus formed underwent cyclization with acetic anhydride to afford 2-methyl-7-（3-methyl-5-oxo-l-phenyl-2-pyrazolin-4-yl）-5-arylthiazolo[3,2-a]- pyrimido[4,5-d]oxazin-4（SH）-one. This compound was transformed to related heterocyclic systems via its reaction with various reagents. The biological activity of the prepared compounds was tested against Gram positive and Gram negative bacteria as well as yeast-lik. and filamentous fungi. They revealed in some cases excellent biocidal properties.

关键词： thiazolopyrimidooxazinone thiazolopyrimidopyrimidines antimicrobial activity

The Effect of Injection Angle on Mixing and Flame Holding in Supersonic Combustor

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Journal of Thermal Science 2002年第1期11卷 80-91页

作者： Shak.l ahmed Mohammad Ali A. k. M. Sadrul Islam Department of Mechanical Engineering Bangladesh University of Engineering and Technology (BUET) Dhaka Bangladesh

A numerical study on mixing of hydrogen injected into a supersonic air stream has been performed by solving two-dimensional full Navier-Stok.s equations. An explicit Harten-Yee Non-MUSCL Modified-flux-type TVD scheme has been used to solve the system of equations, and a zero-equation algebraic turbulence model to calculate the eddy viscosity coefficient. The main objectives of this study are to increase the mixing efficiency and flame holding capability of a supersonic combustor. The performance of combustor has been investigated by varying the hydrogen injection angle made with the direction of air stream considering anti-clock.ise direction as positive. The injector position from left boundary, back.ard-facing step height and the inlet width of air stream are k.pt constant. The results show that upstream of injector the mixing is dominated by recirculation and in downstream the mixing is dominated by mass concentration of hydrogen. Upstream recirculation is dominant for injecting angle 600 and 900 . Incorporating the various effects, perpendicular injection shows the maximum mixing efficiency and its large upstream recirculation region has a good flame holding capability.

关键词： scramjet engine TVD scheme back.ard-facing step supersonic mixing supersonic stream flame holding.

Hepatitis C Virus and Hepatocellular Carcinoma:A Narrative Review

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Journal of Clinical and Translational Hepatology 2018年第1期6卷 79-84页

作者： Page Axley Zunirah ahmed Sujan Ravi Ashwani k. Singa Department of Medicine University of Alabama at BirminghamBirminghamALUSA Division of Gastroenterology and Hepatology University of Alabama at BirminghamAL 35294-0012USA

Hepatocellular carcinoma(HCC)is a leading cause of liverrelated death *** C virus(HCV)infection is a major cause of advanced hepatic fibrosis and cirrhosis,with significantly increased risk.for development of *** morbidity and mortality of HCV-related HCC remains high,as rates of HCV cirrhosis continue to *** long-term goal of antiviral therapy for chronic HCV is to reduce complications from cirrhosis,including *** advent of new direct-acting antivirals with high rates of virological clearance has revolutionized cure of HCV *** the development of HCC in HCV patients who achieve disease sustained virologic response is reduced,these patients remain at risk.for HCC,particularly those patients with advanced fibrosis and *** review outlines the epidemiology of HCC in chronic HCV,various mechanisms,risk.factors and pathophysiology that contribute to this disease process,screening recommendations,and the available data on the impact of new direct-acting antiviral treatment on the development on HCC.

关键词： Hepatitis C Hepatocellular carcinoma Direct-acting antiviral Viral hepatitis

Effect of concrete buildings on the environmental neutron flux by using the reaction ^(197)Au (n,γ) ^(198)Au and extremely low level gamma ray spectroscopy

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Nuclear Science and Techniques 2004年第6期15卷 368-374页

作者： k. k.MURA N.k. ahmed A.H. EL-k.MEL A.M.M. YOUSEF Low Level Radioactivity Laboratory Kanazawa University Wake Tatsunokuchi Ishikawa 923-1224 JapanPhysics Department Faculty of Science South Valley University Kena EgyptPhysics Department Faculty of Science Assiut University Assiut EgyptPhysics Department Faculty of Science South Valley University Kena Egypt

The activation of gold by environmental neutrons through the reaction 197Au (n,γ) 198Au was used to study the effect of concrete buildings on the neutron flux, and to estimate the thermal neutron flux inside and outside these buildings. The results showed that three ceilings of thick.ess 34 g/cm2 decrease the fast neutrons to 26% from its original value. However, the same reinforced concrete decreases the slow neturon flux to only 62% of its original value. The thermal neutron flux at 283 m from the center of Training Reactor of k.nk. University, was twice higher than the environmental neutron back.round.

关键词：金活性混凝土环境中子宇宙射线