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Thermally stratified flow of hybrid nanofluids with radiative heat transport and slip mechanism: multiple solutions

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Communications in Theoretical Physics 2022年第1期74卷 142-151页

作者： Rai Sajjad Saif Hashim Maria Zaman muhammad ayaz Department of Humanities and Sciences School of Electrical Engineering and Computer Science(SEECS)National University of Sciences and Technology(NUST)IslamabadPakistan Department of Pure&Applied Mathematics University of Haripur22620HaripurPakistan Department of Mathematics&Statistics Riphah International University IslamabadPakistan Department of Mathematics Abdul Wali Khan UniversityMardan23200Pakistan

Research on flow and heat transfer of hybrid nanofluids has gained great significance due to their efficient heat transfer *** fact,hybrid nanofluids are a novel type of fluid designed to enhance heat transfer rate and have a wide range of engineering and industrial *** by this evolution,a theoretical analysis is performed to explore the flow and heat transport characteristics of Cu/Al_(2)O_(3) hybrid nanofluids driven by a stretching/shrinking ***,this work focuses on the physical impacts of thermal stratification as well as thermal radiation during hybrid nanofluid flow in the presence of a velocity slip *** mathematical modelling incorporates the basic conservation laws and Boussinesq *** formulation gives a system of governing partial differential equations which are later reduced into ordinary differential equations via dimensionless *** efficient numerical solver,known as bvp4c in MATLAB,is utilized to acquire multiple(upper and lower)numerical solutions in the case of shrinking *** computed results are presented in the form of flow and temperature *** most significant findings acquired from the current study suggest that multiple solutions exist only in the case of a shrinking surface until a critical/turning ***,solutions are unavailable beyond this turning point,indicating flow *** is found that the fluid temperature has been impressively enhanced by a higher nanoparticle volume fraction for both *** the other hand,the outcomes disclose that the wall shear stress is reduced with higher magnetic field in the case of the second *** simulation outcomes are in excellent agreement with earlier research,with a relative error of less than 1%.

关键词： multiple numerical solutions hybrid nanofluids thermal radiation thermal stratification slip conditions heat transfer

Probability Based Regression Analysis for the Prediction of Cardiovascular Diseases

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Computers, Materials & Continua 2023年第6期75卷 6269-6286页

作者： Wasif Akbar Adbul Mannan Qaisar Shaheen Mohammad Hijji muhammad Anwar muhammad ayaz Department of Computer Science NFC Institute of Engineering and TechnologyMultanPakistan Faculty of Computer Science&Information Technology University of MalayaKuala LumpurMalaysia Department of Computer Science and Information Technology The Islamia University of BahawalpurRahim Yar Khan CampusPunjabPakistan Faculty of Computers and Information Technology University of TabukTabuk47512Saudi Arabia Department of Information Sciences Division of Science and TechnologyUniversity of EducationLahorePakistan Sensor Networks and Cellular Systems(SNCS)research center University of TabukTabuk47512Saudi Arabia

Machine Learning(ML)has changed clinical diagnostic procedures *** in Cardiovascular Diseases(CVD),the use of ML is indispensable to reducing human *** studies focused on disease prediction but depending on multiple parameters,further investigations are required to upgrade the clinical ***-layered implementation of ML also called Deep Learning(DL)has unfolded new horizons in the field of clinical *** formulates reliable accuracy with big datasets but the reverse is the case with small *** paper proposed a novel method that deals with the issue of less data *** by the regression analysis,the proposed method classifies the data by going through three different *** the first stage,feature representation is converted into probabilities using multiple regression techniques,the second stage grasps the probability conclusions from the previous stage and the third stage fabricates the final *** experiments were carried out on the Cleveland heart disease *** results show significant improvement in classification *** is evident from the comparative results of the paper that the prevailing statistical ML methods are no more stagnant disease prediction techniques in demand in the future.

关键词： Machine learning heart disease cardiac disease deep regression regression learning

Saponins and solvent extracts from Atriplex laciniata L. exhibited high anthelmintic and insecticidal activities

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Journal of Traditional Chinese Medicine 2017年第5期37卷 599-606页

作者： Zul Kamal Farhat Ullah Sajjad Ahmad muhammad ayaz Abdul Sadiq muhammad Imran Shujat Ahmad Faiz Ur Rahman Anwar Zeb Department of Pharmacy Shaheed Benazir Bhutto University Sheringal Dir Upper 18050Pakistan Department of Pharmacy University of Malakand Chakdara Dir Lower 18000 Pakistan Department of Zoology Shaheed Benazir Bhutto University Sheringal Dir Upper 18050 Pakistan

OBJECTIVE: To investigate saponins and various solvent extracts from Atriplex laciniata(A. laciniata)against human parasites and various ***: The samples from A. laciniata used in the activities were crude saponins(*** F) and solvent samples including methanolic extract(*** F), ethyl acetate(*** F), choloroform(*** F),n-hexane(*** F) and water residual(*** F). Anthelmintic potentials of the samples were analyzed against Pheretima posthuma(earthworms) and Ascaridia galli(round worms) using contact toxicity method. Insecticidal activities were performed against Heterotermes indicola(termite), Monomorium pharaonis(pharaoh ant), Tribolium castaneum(flour beetle) and Rhyzopertha dominica(grain borer) using standard ***: In anthelmintic assay, *** F and *** F were most effective against P. posthuma and A. gal-li with average death times of 25.62 and 29.65 min respectively. Likewise the anthelmintic assay, *** F and *** F were most effective against H. indicola causing 90.36% and 73.24% lethality respectively. Furthermore, in anti-Pharaoh activity *** F, *** F, *** F, *** F and *** F exhibited highest activity with LD50 of 78, 220, 260, 330 and > 800 mg/m L respectively. *** F and *** F were highly effective against R. dominica causing 80.11% and71.30% lethality respectively. *** F was found most active against T. ***: Our findings suggest that the *** F, *** F and *** F extracted from *** *** be the best options for the isolation of anthelmintic and bio-insecticidal compounds.

关键词： Saponins Atriplex Parasites Hetero termes indicola Monomorium pharaonis Rhyzopertha dominica Tribolium castaneum

A Novel Framework for Multi-Classification of Guava Disease

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Computers, Materials & Continua 2021年第11期69卷 1915-1926页

作者： Omar Almutiry muhammad ayaz Tariq Sadad Ikram Ullah Lali Awais Mahmood Najam Ul Hassan Habib Dhahri College of Applied Computer Sciences King Saud University(Almuzahmiyah Branch)Riyadh11564KSA Department of Computer Science University of Central PunjabLahore54000Pakistan Department of CS&SE International Islamic UniversityIslamabad44000Pakistan Division of Science and Technology University of EducationLahore54000Pakistan Department of Electrical and Computer Engineering Dhofar UniversitySalalahOman

Guava is one of the most important fruits in Pakistan,and is gradually boosting the economy of *** production can be interrupted due to different diseases,such as anthracnose,algal spot,fruit fly,styler end rot and *** diseases are usually detected and identified by visual observation,thus automatic detection is required to assist *** this research,a new technique was created to detect guava plant diseases using image processing techniques and computer *** automated system is developed to support farmers to identify major diseases in *** collected healthy and unhealthy images of different guava diseases from the *** image labeling was done with the help of an expert to differentiate between healthy and unhealthy *** local binary pattern(LBP)was used for the extraction of features,and principal component analysis(PCA)was used for dimensionality *** classification was carried out using multiple classifiers,including cubic support vector machine,Fine K-nearest neighbor(F-KNN),Bagged Tree and RUSBoosted Tree algorithms and achieved 100%accuracy for the diagnosis of fruit flies disease using Bagged ***,the findings indicated that cubic support vector machines(C-SVM)was the best classifier for all guava disease mentioned in the dataset.

关键词： Classification guava disease image processing machine learning

Trajectory of cause of death among brought dead neonates in tertiary care public facilities of Pakistan: A multicenter study

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World Journal of Pediatrics 2017年第1期13卷 57-62页

作者： muhammad ayaz Mustufa Munir Ahmed Sheikh Ijaz-ul-Haque Taseer Syed Jamal Raza muhammad Sohail Arshad Tasleem Akhter Ghazala Mohyuddin Arain Sultana Habibuilah Sohail Safdar Rukhsana Firdous muhammad Adnan PMRC Specialized Research Center on Child Health National Institute of Child HealthKarachiPakistan PMRC Research Center Liaquat University of Health and Medical SciencesJamshoroHyderabadPakistan PMRC Research Center Nishtar MedicaI CollegeMultan.Pakistan PMRC Research Center Khyber Medical CollegePeshawarPakistan PMRC Research Center Punjab Medical CollegeFaisalabad.Pakistan PMRC Research Center Dow University of Health Sciences.Karachi.Pakistan PMRC Research Center Bolan Medical CollegeOuettaPakistan PMRc Research Center FJMCLahore.Pakistan.

Background:Considering the fact that Pakistan is amongst the countries with very high neonatal mortality rates,we conducted a research study to determine the possible causes and characteris廿cs of neonates presenting dead to the emergency department of tertiary public health care facilities of Pakistan using verbal ***:A descriptive case series study was conducted in emergency department/pediatrics ward/neonatal ward/nursery unit of ten tertiary care public health facilities,situated in seven malor cities of Pakistan from November,2011 to June。*** verbal autopsy proforma was used to collect information regarding cause of death,family narratives and other associated risks accountable for pathway to mortality.

关键词： autopsy child health services early childhood emergency department use neonatal mortality

Dengue fever treatment with Carica papaya leaves extracts

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Asian Pacific Journal of Tropical Biomedicine 2011年第4期1卷 330-333页

作者： Nisar Ahmad Hina Fazal muhammad ayaz Bilal Haider Abbasi Ijaz Mohammad Lubna Fazal Faculty of Biological Sciences Quaid-i-Azam UniversityIslamabad 45320Pakistan Nuclear Institute for Food and Agriculture(NIFA) Tarnab Peshawar 25000Pakistan Pakistan Council of Scientific and Industrial Research(PCSIR) Laboratories Complex Peshawar 25000Pakistan Department of Environmental Sciences University of PeshawarPeshawar 25000Pakistan Postgraduate Medical Institute(PGMI) Lady Reading HospitalPeshawar 25000Pakistan

The main objective of the current study is to investigate the potential of Carica papaya leaves extracts against Dengue fever in 45 year old patient bitten by carrier *** the treatment of Dengue fever the extract was prepared in water.25 mL of aqueous extract of *** leaves was administered to patient infected with Dengue fever twice daily *** and evening for five consecutive *** the extract administration the blood samples from patient were *** count(PLT),White Blood Cells(WBC) and Neutrophils(NEUT) decreased from 176×10~3/μ L,8.10×10~3/μ L,84.0%to 55×10~3/μ L,3.7×10~3/μL and 46.0%.Subsequently,the blood samples were rechecked after the administration of leaves *** was observed that the PLT count increased from 55×10~3/μ L to 168×10~3/μ L,WBC from 3.7×10~3/μ L to 7.7×10~3/μ L and NEUT from 46.0%to 78.3%.From the patient feelings and blood reports it showed that Carica papaya leaves aqueous extract exhibited potential activity against Dengue ***,the different parts of this valuable specie can be further used as a strong natural candidate against viral diseases.

关键词： Dengue fever Carica papaya Leaves extracts Platelets Potential activity

关中平原冬小麦夏玉米轮作制度下生物炭对养分利用效率和淋失的影响

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关中平原冬小麦夏玉米轮作制度下生物炭对养分利用效率和淋失的影...

作者： muhammad ayaz 西北农林科技大学

学位级别：硕士

在2016～2017年间进行了渗漏池试验,研究生物炭对陕西关中平原冬小麦/夏玉米轮作系统氮磷利用效率和氮磷淋溶损失的影响。试验在不同深度的渗漏池(d=50cm,d=80cm,d=120cm-150cm和d=200cm)中进行,生物炭包括小麦秸秆生物炭(BS)和烟秆生物... 详细信息

在2016～2017年间进行了渗漏池试验,研究生物炭对陕西关中平原冬小麦/夏玉米轮作系统氮磷利用效率和氮磷淋溶损失的影响。试验在不同深度的渗漏池(d=50cm,d=80cm,d=120cm-150cm和d=200cm)中进行,生物炭包括小麦秸秆生物炭(BS)和烟秆生物炭(BT),每种生物炭用量分别是15 t/ha和30 t/ha,试验共计7个处理,分别为水肥优化处理(OPT),OPT+秸秆生物炭处理(OPT+BS,OPT+BS,OPT+BS,OPT+BS),OPT+烟叶生物炭处理(OPT+BT,OPT+BT)。水肥优化处理小麦季氮肥施用量是150 kgN/ha,磷肥施用量是120kgP2O5/ha;在夏玉米季仅施用180kaN/ha,不施磷肥。试验结果表明,OPT+BS处理和OPT+BT处理的小麦籽粒产量显著高于OPT处理。然而,相比OPT施加生物炭没有显著影响小麦的地上部生物量。两种生物炭也没有影响玉米的籽粒产量,OPT+BS处理、OPT+BT处理的玉米地上部生物量分别比OPT处理增加了19.11%和21.43。相比OPT处理,施加生物炭显著提高了氮肥偏生产力,却显著降低磷肥偏生产力。施加生物炭没有显著影响氮磷收获指数、氮素利用效率和磷利用效率。在整个小麦/玉米轮作年中,OPT+BS和OPT+BT处理的可溶性有机氮、NO-N(硝态氮)和NH-N(铵态氮)淋失量显著高于OPT处理。然而,在200 cm和80 cm深度的渗漏池中,施加生物炭处理相比OPT 处理没有观察到显著的氮素淋失。在50 cm和80 cm深的渗漏池中,施加生物炭处理的年MRP(钼反应磷)淋溶量、年PP(颗粒磷)淋溶量和年DOP(溶解有机磷)淋溶量显著高于OPT然而,在200 cm深的渗漏池中,施加生物炭处理的各磷素淋溶量与OPT相似。总体而言,本研究认为,在本试验条件下低量小麦秸秆生物炭可能会增加小麦和玉米的籽粒产量和N肥利用效率。因此,需要进一步研究来明确生物炭对作物产量和肥料利用效率及养分淋失的影响。

关键词：生物炭渗漏池作物产量养分利用效率淋溶损失

巴基斯坦留学生习得被动句的调查分析及教学设计

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巴基斯坦留学生习得被动句的调查分析及教学设计

作者： ayaz muhammad（张楠）海南师范大学

学位级别：硕士

被动句可以简单理解为主语与谓语之间的被动关系,在不同语言中被动句的表现形式不同。从类型学的视角来看,乌尔都语为SOV型语言,汉语为SVO型语言,乌尔都语作为巴基斯坦的国语,语法体系复杂,人们说话时的思维习惯也与中国人有很大差异,... 详细信息

被动句可以简单理解为主语与谓语之间的被动关系,在不同语言中被动句的表现形式不同。从类型学的视角来看,乌尔都语为SOV型语言,汉语为SVO型语言,乌尔都语作为巴基斯坦的国语,语法体系复杂,人们说话时的思维习惯也与中国人有很大差异,基本词序是主语-宾语-谓语。汉乌被动句虽然都强调承受行为动作的客体,但在形式、语法、语用和思维方式等方面有较大差异。母语为乌尔都语的巴基斯坦留学生,第二语言英语是教学媒介语,其语言结构复杂,在学习汉语中的被动句表达时常常出现一系列的偏误。产生偏误的原因主要有第一,乌尔都语和汉语语言类型不同,语序不同;二是汉语被动句常用标记词“被”“受”“给”“让”,也可以不使用标记词,而乌尔都语没有被动句的标记词。因此,巴基斯坦学生在没有完全理解两种语言“被动句”的表达形式及句法规则时,很容易因为母语负迁移而产生偏误,第三个因素就是来自第二语言英语的影响。本论共分为四个部分。第一部分是绪论。首先论文阐述了研究的目的与研究现状,并对本研究创新之处做了说明,并且说明了本论文的研究内容与方法。第二个部分是调查分析。论文对以乌尔都语为母语的汉语二语者学习和使用汉语被动句的情况进行调查分析,主要以在线电子问卷的形式展开,从“被试”“被动意义”“语义”“格式”“句法结构”“用法”几个方面进行调查,并且对其数据探讨与分析。第三个部分是偏误类型总结与分析。论文基于问卷调查数据,认为巴基斯坦汉语学习者学习汉语被动句主要偏误分为“错序使用”“成分缺失”“冗余”“语义理解偏差”四类。论文探讨了其成因有三,分别为母语乌尔都语迁移,二语英语迁移,第三是学习策略和观念的影响。第四部分是教学建议。基于巴基斯坦汉语学习者的情况与分析,论文提出了这类句子的教学建议。第一是教师语言有“引导性”“提升性”;第二是教师应针对性处理教材知识呈现方式,编写国别化本土教材;第三是养成良好的、交际性强的课堂氛围。

关键词：被动句乌汉对比偏误分析汉语教学迁移语言类型学

Closing the nitrogen use efficiency gap and reducing the environmental impact of wheat-maize cropping on smallholder farms in the Guanzhong Plain,Northwest China

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Journal of Integrative Agriculture 2019年第1期18卷 169-178页

作者： Lü Feng-lian HOU Miao-miao ZHANG Hong-tao Asif Khan muhammad ayaz QIANGJIU Ciren HU Chang-lu YANG Xue-yun SUN Ben-hua ZHANG Shu-lan College of Natural Resources and Environment Northwest A&F University/Key Laboratory of Plant Nutrition and the Agro-environment in Northwest ChinaMinistry of Agriculture Agriculture and Husbandry Bureau of Cuona County Agriculture and Husbandry Bureau of Cuona County

A high crop yield with the minimum possible cost to the environment is generally ***,the complicated relationships among crop production,nitrogen(N) use efficiency and environmental impacts must be clearly *** conducted a series of on-farm N application rate experiments to establish the linkage between crop yield and N_2 O emissions in the Guanzhong Plain in Northwest *** also examined crop yield,partial factor productivity of applied N(PFPN) and reactive N(Nr) losses through a survey of 1 529 and 1 497 smallholder farms that grow wheat and maize,respectively,in the *** optimum N rates were 175 and 214 kg ha^(-1) for winter wheat and summer maize,respectively,thereby achieving the yields of 6 799 and 7 518 kg ha^(-1),correspondingly,with low N_2 O emissions based on on-farm N rate *** the smallholder farms,the average N application rates were 215 and 294 kg ha^(-1) season^(-1),thus producing 6 490 and 6 220 kg ha^(-1) of wheat and maize,*** corresponding PFPN values for the two crops were 36.8 and 21.2 kg N kg^(-1),and the total N_2 O emissions were 1.50 and 3.88 kg ha^(-1),*** N balance,large Nr losses and elevated N_2 O emissions could be explained by the overdoses of N application and low grain yields under the current farming *** crop yields,N application rates,PFPN and total N_2 O for wheat and maize were 18 and 24% higher,42 and 37% less,75 and 116% higher,and 42 and 47% less,correspondingly,in the high-yield and high-PFPN group than in the average smallholder *** conclusion,closing the PFPN gap between the current average and the value for the high-yield and high-PFPN group would increase crop production and reduce Nr losses or the total N_2 O emissions for the investigated cropping system in Northwest China.

关键词： N fertiliser grain yield PFPN N balance reactive nitrogen losses N2O emission