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Frontiers in Heat and Mass Transfer 2023年第1期21卷 215-226页

作者： majid ahmed mohammed Abdullah Talab Derea mohammed Yaseen Lafta Obed Majeed Ali Omar Rafae Alomar Department of Power Mechanics Haweja Technical InstituteNorthern Technical UniversityKirkuk36001Iraq Department of Reconstruction and Projects Ministry of Higher Education and Scientific ResearchBaghdad10065Iraq Department of Physics College of EducationAl-Iraqia UniversityBaghdad10053Iraq Engineering Technical College of Mosul Northern Technical UniversityMosul41002Iraq

It is common knowledge that phase-change materials are used for the purpose of thermal storage because of the characteristics that are exclusive to these materials and not found in *** characteristics include a large capacity for absorbing heat and a large capacity for releasing heat when the phase changes;however,these materials have a low thermal *** paper presents the results of an experimental study that investigated the impact that nanoparticles of copper oxide had on reducing the temperature of solar *** phase change substance that was used was determined to be *** impact of adding nanoscale copper oxide at a concentration of 0.05%of the total mass of wax was investigated and compared to a reference solar panel that did not contain any nanoscale *** findings demonstrated that the incorporation of nanoscale copper oxide brought about a reduction of three℃ in the plate’s average temperature as well as a one percent improvement in its electrical *** cases where it seems that the use of nanoparticles might potentially enhance the performance of integrated solar energy systems that contain phase change.

关键词： Copper oxide nanoparticles nanoparticle beeswax thermal conductivity phase-change materials

Fabrication and characterization of gold nano particles for DNA biosensor applications

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Chinese Chemical Letters 2016年第5期27卷 801-806页

作者： ahmed Mishaal mohammed Chemistry Department College of Science Anbar University Institutes of Nano Electronic Engineering University Malaysia Perlis

This research involves the preparation ofa biosensor using silicon oxide for biomedical applications, and its effective use for the detection of target DNA hybridization. An electrochemical DNA biosensor was successfully fabricated by using （3-aminopropyl） tri-ethoxysilane （APTES） as a linker molecule combined with gold nanoparticles （GNPs） on a thermally oxidized 5i02 thin film. The size of the GNPs was calculated by utilizing UV-vis data with an average calculated particle size within the range of 30 - 5 nm, and characterization by transmission electron microscopy （TEM） and atomic force microscopy （AFM）. The GNP-modified SiO2 thin films were electrically characterized through the measurement of capacitance, permittivity and conductivity using a low-cost dielectric analyzer. The capacitance, permittivity and conductivity profiles of the fabricated sensor clearly differentiated DNA immobilization and hybridization.

关键词： Gold nanoparticlesElectrochemical DNA hybridization Dielectric analyzer

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Nonlinear analysis of a non-Fourier heat conduction problem in a living tissue heated by laser source

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International Journal of Biomathematics 2017年第8期10卷 19-37页

作者： mohammed Javad Noroozi majid Goodarzi Faculty of EngineeringUniversity of Ayatollah Ozma Boroujerdi Boroujerd Iran

The effect of laser, as a heat source, on a one-dimensional finite living tissue was stud- ied in this paper. The dual phase lagging （DPL） non-Fourier heat conduction model was used for thermal analysis. The thermal conductivity was assumed temperature- dependent, resulting in a nonlinear equation. The obtained equations were solved using the approximate-analytical Adomian decomposition method （ADM）. It was concluded that the nonlinear analysis was important in nomFourier heat conduction problems. Moreover, a good agreement between the present nonlinear model and experimental result was obtained.

关键词： Adomian decomposition method dual phase lagging model laser heating living tissue non-Fourier heat conduction nonlinear analysis.

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 Khabbazi ElinaMohd Husini Nurul SyalaAbdul Latip YakubuAminuDodo Rime ELHarrouni MinaAmazal Asma Souidi Malika 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(kWh/m^(2).an)and the cooling needs ratio is 49(kWh/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

Robust Multi-Output Machine Learning Regression for Seismic Hazard Model Using Peak Crust Acceleration Case Study,Turkey,Iraq and Iran

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Journal of Earth Science 2023年第5期34卷 1447-1464页

作者： Shaheen mohammed Saleh ahmed Hakan Guneyli Department of Geology College of ScienceKirkuk UniversityKirkuk 36001Iraq Department of Geology Faculty EngineeringCukurova UniversityBalcali-Adana 01330Turkey

This paper for the first time improved a Robust Multi-Output machine learning regression model for seismic hazard zoning of Turkey, Iraq and Iran using constructed 3-D shear-wave velocity(Vs), seismic tomography dataset model for the crust and uppermost mantle beneath the study area. The focus of this paper’s opportunity is to develop a scientific framework leveraging machine learning that will ultimately provide the rapid and more complete characterization of earthquake properties. This work can be targeted at improving the seismic hazard zones system ability to detect and associate seismic signals, or at estimating other seismic characteristics(crust acceleration and crust energy) while traditionally, methods cannot monitor the earthquakes system. This work has derived some physical equations for extraction of many variables as inputs for our developed machine learning model based on a reliable understanding of the tomography data to physical variables by preparing huge dataset from different physical conditions of crust. We have extracted the velocity values of the shear waves from the original NETCDF file, which contains the S velocity values for every one km of the depths of the crust for the study area from one km down to the uppermost mantle beneath the Middle East. For the first time, this study calculated new seismic hazard parameter called Peak Crust Acceleration(PCA) for seismic hazard analysis by considering the transmitted initial seismic energy through the Earthy wrote in python language ’s crust layers from hypocenter. All machine learning algorithms in this studusing anaconda platform the open-source Individual Edition(Distribution).

关键词： robust multi-output regressor tomography peak crust acceleration NETCDF machine learning hazards

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Ding w-Flat Modules and Dimensions

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Algebra Colloquium 2018年第2期25卷 203-216页

作者： Fuad Ali ahmed Almahdi mohammed Tamekkante Department of Mathematics Faculty of Sciences King Khalid University P. O. Box. 9004 Abha Saudi Arabia Laboratory MACS Faculty of Sciences University Moulay Ismail 5000 P.B. 11201 Zitoune Meknes Morocco

The introduction of w-operation in the class of flat modules has been successful. Let R be a ring. An R-module M is called a w-fiat module if Tor1r（M, N） is GV-torsion for all R-modules N. In this paper, we introduce the w-operation in Gorenstein homological algebra. An R-module M is called Ding w-flat if there exists an exact sequence of projective R-modules ... → P1 → P0 → p0 → p1 → ... such that M Im（P0 → p0） and such that the functor HomR （-,F） leaves the sequence exact whenever F is w-flat. Several well- known classes of rings are characterized in terms of Ding w-flat modules. Some examples are given to show that Ding w-flat modules lie strictly between projective modules and Gorenstein projective modules. The Ding w-flat dimension （of modules and rings） and the existence of Ding w-flat precovers are also studied.

关键词： w-fiat module and dimension Gorenstein projective module and dimension,strongly Gorenstein flat module

A novel algorithm for distance measurement using stereo camera

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CAAI Transactions on Intelligence Technology 2022年第2期7卷 177-186页

作者： Elmehdi Adil mohammed Mikou ahmed Mouhsen MISI Laboratory Faculty of Sciences and TechniquesHassan First University of SettatSettatMorocco IMII Laboratory Faculty of Sciences and TechniquesHassan First University of SettatSettatMorocco

Distance estimation can be achieved by using active sensors or with the help of passive sensors such as *** stereo vision system is generally composed of two cameras to mimic the human binocular *** this paper,a Python-based algorithm is pro-posed to find the parameters of each camera,rectify the images,create the disparity maps and finally use these maps for distance *** using real-time im-ages,which were captured from our stereo vision system,of different obstacles posi-tioned at multiple distances(60-200 cm)prove the effectiveness of the proposed program and show that the calculated distance to the obstacle is relatively *** accuracy of distance measurement is up to 99.83%.The processing time needed to calculate the distance between the obstacle and the cameras is less than 0.355 s.

关键词： computer vision disparity maps distance measurement Python stereoscopic processing

Mathematical models for process commonality under quality and resources breakdown in multistage production

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2011年第11期12卷 837-848页

作者： mohammed Abdul WAZED Shamsuddin ahmed Yusoff Bin NUKMAN Department of Engineering Design and Manufacture University of Malaya Department of Mechanical Engineering Chittagong University of Engineering and Technology(CUET)

It is essential to manage customers' diverse desires and to keep manufacturing costs as low as possible for survival in competition and eventually in *** resources in manufacturing for different products is a vital method of accomplishing this *** advantages of using a common process in production are stated in the ***,the mathematical models as well as simulation or conceptual models are not *** main objective of this paper is to develop mathematical models for multiproduct and multistage production under quality and breakdown *** idea of the process commonality is incorporated in the proposed *** models are validated by primary data collected from a Malaysian company and comparison of the timely requirement schedules of earlier MRP II and the proposed models under stable and perfect production *** appreciable convergence of the outcomes is ***,the proposed models are carrying additional information about the available locations of the parts in a time *** validation,the effects of process commonality on cost,capacity and the requirement schedule under uncertainties are *** is observed that the use of common processes in manufacturing is always better than the non-commonality scenario in terms of production ***,the increase in capacity requirement for commonality designs is higher for an ideal system,while it is less when the system suffers from breakdowns and a quality problem.

关键词： Process commonality Mathematical model MRP II Quality Breakdown

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Scour hole reduction at a diversion channel junction using different entrance edge shapes

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International Journal of Sediment Research 2023年第6期38卷 811-820页

作者： ahmed Yahya Abdulhafedh Nashwan Kamalaldeen Alomari ahmed mohammed Sami Al-Janabi Department of Dams and Water Resources Engineering College of Engineering University of Mosul Department of Civil Engineering Cihan University-Erbil

In the current study,the effect of the entrance edge shape on the scour hole in the diversion junction region was experimentally *** investigation has considered three entrance modelsrounded edge shapes on one or both sides of the diversion channel entrance-with five different inlet edge radius ratios(rr) of 25%,37.5%,50%,62.5%,and 75% and five different diversion discharge ratios(Qr)of 7.5%,12.5%,17.5%,22.5%,and 30%.The results have found the direct relation between Qrand the scour depth to the diversion channel water depth ratio(ds/yb).Moreover,the use of a rounded edge shape on one or both sides of the diversion channel entrance instead of a sharp shape results in a reduction in scour depth to diversion channel water depth ratio(ds/yb) when the Qris greater than 20%.The results also indicated that the largest decrease in the scour coefficient(Kds) for the model with a rounded downstream edge compared with the sharp edge diversion channel entrance shape was 22% at a discharge ratio of 22.5% and an edge radius ratio of 37.5%.In addition,the entrance shape model with a rounded edge at the upstream outperformed other models in scour reduction with an average of all experiments of 5.77%.Finally,empirical relations for estimating scour depth for different rounded edge models in terms of the effective dimensionless parameters were established with coefficients of determination(R2) of not less than 0.853.

关键词： Open channel Diversion flow Entrance edge shape Scour Channel junctions

Flow Injection Chemiluminescence Method for Nalbuphine Hydrochloride in Pharmaceutical Formulations Using Tris(2,2′-bipyridyl)ruthenium(II)Chloride-diperiodatocuprate(III)Reaction

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Chemical Research in Chinese Universities 2021年第3期37卷 629-638页

作者： ahmed Khan MUHAMMAD Asghar mohammed Yaqoob MASOOD ahmed Siddiqui SAMAR Ali Department of Chemistry University of BalochistanSariab RoadQuetta87300Pakistan

A sensitive and selective method employing chemiluminescence(CL)coupled with flow injection(FI)is reported for nalbuphine hydrochloride(NAL)assay in pharmaceutical *** enhancement effect of NAL on the CL reaction between tris(2,2′-bipyridyl)ruthenium(II)chloride-diperiodatocuprate(III){Ru[(bpy)_(3)]^(2+)-Cu(III)complex}in acidic medium is used as analytical *** optimal conditions of the CL reaction were sulfuric acid 1.0×10^(−3) mol/L,Ru[(bpy)s]2+7.5×10^(−5) mol/L,Cu(III)/Ag(III)complexes 4.0×10^(−4)/5.0×10^(−4) mol/L,sample loop volume of 120µL and flow rate of 2.5 mL/*** sensitivities of the method in terms of detection(S/N=3)and quantification(S/N=10)limits are 5×10^(−4) and 0.001 ppm(1 ppm=1 mg/L),*** linear response of the instrument in the form of CL intensity with respect to NAL concentration is over the range 0.001-15.0 ppm(R^(2)=0.9999)with relative standard deviation from 0.8%to 3.2%and injection throughput of 120 injection/*** applications of the method include the quantitative analysis of NAL in pharmaceutical injection *** and the average results of the proposed method are not significantly different from the results of a reported method by applying F-and paired student *** most likely CL reaction mechanism is written in accordance with spectrophotometric and CL studies.

关键词： Ru[(bpy)_(3)]^(2+) Cu(III)/Ag(III)complex Chemiluminescence Flow injection analysis Nalbuphine hydrochloride Pharmaceutical