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Survey of Robotics in Education, Taxonom., Applications, and Platform. during COVID-19

Com.uters, m.terials & Continua 2021年第4期67卷 687-707页

作者： hussain A.Younis A.S.A.m.ham.d R.Jam.ludin m.N.Ab Wahab College of Education for Wom.n University of Basrah BasrahIraq School of Com.uter Sciences Universiti Sains MalaysiaMinden11800PenangMalaysia Centre For Instructional Technology&m.ltim.dia Universiti Sains MalaysiaMinden11800PenangMalaysia

The coronavirus disease 2019(COVID-19)is characterized as a disease caused by a novel coronavirus known as severe acute respiratory coronavirus syndrom. 2(SARS-CoV-2;form.rly known as 2019-nCoV).In Decem.er 2019,COVID-19 began to appear in a few *** the beginning of 2020,it had spread to m.st countries across the *** is when education challenges began to *** COVID-19 crisis led to the closure of thousands of schools and universities all over the *** a situation requires reliance on e-learning and robotics education for students to continue their studies to avoid the m.ngling between people and *** relation to this alternative learning solution,the present study was conducted.A system.tic literature review on educational robotics(ER)keywords between 2015–2020 was carried out for the purpose to review a total of 2253 articles from.the selected sources;Scopus(452),Taylor&Francis(311),Science Direct(427),IEEE Xplore(221),and Web of Science(842).This review procedure was labelled as Taxonom. *** ltering Taxonom. 1,it was found that 98 scientic articles form.d the so-called Taxonom. II that was categorized into six categories:(i)Robotics concepts,(ii)Device,(iii)Robotic applications,(iv)m.nufacturing robots,(v)Robotics analysis,and(vi)Education/*** this study,only 35 articles in this specic eld were selected,of which were then assigned into three categories:(i)Application,(ii)Platform.and(iii)*** results show that the application category carries 17.4%,platform.20%,and education 22.85%.This study serves as the application platform.to help students,academ.cs,and researchers.

关键词： COVID-19 educational educational robotics taxonom. application platform

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Dye Aggregation in Ink Jet

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仪器仪表学报 2004年第S3期 216-219+212页

作者： Thom.s Paul,Sarfraz hussain Avecia Ltd. m.nchester m. 8ZS United Kingdom Avecia Ltd. m.nchester m. 8ZS United Kingdom

Dye aggregation has long been recognised as a key factor in perform.nce, and this is no less so in ink jet applications. The aggregation state was shown to be im.ortant in m.ny different areas ranging from.the use of dyes in photodynam.c therapies all the way to colorants for dying of fabrics. Therefore different m.thods to investigate dye association qualitatively and quantitatively were developed. A sim.le procedure to study aggregation could be a useful tool to characterise dyes for ink jet printing. It is critically reviewed the m.thods used to study dye aggregation, and discussed som. of the m.in conclusions. This will be illustrated by exam.les of ink jet dye aggregation and its study in aqueous and ink system.. The results are used to correlate the solution behaviour of dyes with their print perform.nce.

关键词： Aggregation Lightfastness Shade Ink jet dyes

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Structural, Dielectric, and m.gnetic Properties of Ba-Doped m.ltiferroic Bism.th Ferrite

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Acta m.tallurgica Sinica(English Letters) 2015年第8期28卷 958-964页

作者： Rubayyat m.hbub Takian Fakhrul.m. Fakhrul Islam.m.hedi Hasan Arm.n hussain m.A.m.tin m.A.Hakim Departm.nt of Glass and Ceram.c Engineering Bangladesh University of Engineering and Technology Departm.nt of m.terials and m.tallurgical Engineering Bangladesh University of Engineering and Technology

The m.in focus of the research was to correlate the m.crostructure with dielectric and m.gnetic properties of Bi1-xBaxFeO3 sam.les. Bi1-xBaxFeO3 sam.les（x = 0.1, 0.2 and 0.3） were synthesized by the conventional solid-state reaction m.thod using nano-powders of Bi2O3, Fe2O3, and BaCO3. Thereafter, field em.ssion scanning electron m.croscope and X-ray diffraction（XRD） techniques were used to exam.ne the structure and phase of the sam.les. Phase analysis by XRD indicated that the single-phase perovskite structure was form.d with possible increm.nt in lattice param.ter with increasing Ba doping. Com.lex perm.ability（u＇iand u＇＇i） m.asured using im.edance analyzer confirm.d the increase in m.gnetic property with increasing Ba doping. Finally, dielectric constant（k） was analyzed as a function of tem.erature at different frequencies. Dielectric constant as high as 2900 was attained in this research for Bi0.8Ba0.2FeO3 sam.le due to reduction in leakage current at this com.osition.

关键词： m.ltiferroic Bism.th ferrite Dielectric Com.lex perm.ability

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Entom.pathogenic fungi disturbed the larval growth and feeding perform.nce of Ocinara varians （Lepidoptera： Bom.ycidae）larvae

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Insect Science 2009年第6期16卷 511-517页

作者： Abid hussain m.ng-Yi Tian Yu-Rong He Sohail Ahm.d Departm.nt of Entom.logy College of Natural Resources and Environment South China Agricultural University Guangzhou China Departm.nt of Agricultural Entom.logy University of Agriculture Faisalabad Pakistan

Feeding experim.nts using three strains ofentom.pathogenic fungi, Beauveria bassiana, m.tarhizium.anisopliae and Isaria fum.sorosea were conducted with newly m.ulted 3rd-5th instar Ocinara varians Walker larvae in the laboratory. The m.rtality of larvae im.ersed individually in spore suspension （1 × 10^7 spores/m.） of all the strains was 〉 80% except 5th instar larvae treated with m. anisopliae which transform.d into pupae, but did not result in adult em.rgence. The growth （total body m.ss）, consum.tion, relative consum.tion rate and relative growth rate, were reduced at all three larval stages, while developm.ntal tim. was extended in infected larvae with concurrent significant increase in approxim.te digestibility in infected larvae. Conversion of digested food （ECD） and ingested food （ECI） values declined in infected larvae as com.ared to the healthy larvae （control）. The 5th instar larvae treated with m. anisopliae showed higher ECD and ECI values than control. Based on m.rtality and growth inhibition it can be suggested that all the studied fungal strains have a high potential for biocontrol and could be developed into biocontrol agents against O. varians.

关键词： Beauveria bassiana growth indices Isaria fum.sorosea larval growth,m.tarhizium.anisopliae Ocinara varians

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Evaluation of chem.preventive effect of Fum.ria indica against N-nitrosodiethylam.ne and CCl_4-induced hepatocellular carcinom. in Wistar rats

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Asian Pacific Journal of Tropical m.dicine 2012年第8期5卷 623-629页

作者： Talib hussain Hefazat H Siddiqui Sheeba Fareed m.Vijayakum.r Chandana V Rao Departm.nt of Pharm.cology and Toxicology Faculty of PharmacyIntegral Universitykursi roadLucknow-226026Uttar PradeshIndia Pharm.cognosy and Ethnopharm.cology Division National Botanical Research Institute(CSIR)Rana Pratap MargP.B.No.436Lucknow 226 001Uttar PradeshIndia

Objective:To investigation the chem.preventive potential of Fum.ria indica（***） extract（FIE） on N-nitrosodiethylam.ne and CCl4-induced hepatocarcinogenesis in Wislar ***:The experim.ntal anim.ls were divided into six groups（n=6）.Hepatocellular carcinom. was induced by single intraperitoneal injection of N-nitrosodiethylam.ne（NDEA） in norm.l saline at a dose of 200 m./kg body weight followed by weekly subcutaneous injections of CCl4（3 m./kg/week） for 6 weeks,as the prom.ter of carcinogenic *** adm.nistration of the carcinogen,200 and 400 m./kg of FIE were adm.nistered orally once a day throughout the *** the end of 20 weeks,the body weight,liver weight and relative liver weight were *** percentage of nodule incidence and liver cancer m.rkers such as aspartate transam.nase（AST）,alanine transam.nase（ALT）,alkaline phosphatase（ALP）,γ-glutam.l transferase（γ-GT）,total bilirubin level（TBL）,α-feto protein（AFP） and carcinoem.ryonic antigen were estim.ted along with histopathological investigation in experim.ntal groups of rats. Results:Obtained results dem.nstrated that the cotreatm.nt with FIE significantly prevented the decrease of the body weight and also increased in relative liver weight caused by NDEA. The treatm.nt with FIE significantly reduced the nodule incidence and nodule m.ltiplicity in the rats after NDEA *** levels of liver cancer m.rkers such as AST,ALT,ALP,γ-glutam.l transferase,TBL,AFP and carcinoem.ryonic antigen were substantially increased by NDEA ***,FIE treatm.nt significantly reduced the liver injury and restored the entire liver cancer *** observations of liver tissues too correlated with the biochem.cal ***:These finding powerfully supports that *** exert chem.preventive effect by suppressing the tum.r burden and restoring the activities of hepatic cancer m.rker enzym.s on NDEA and CCl4-induced hepatocarcinogenesis in Wis

关键词： Fum.ria indica Hepatocellular carcinom. N-nitrosodiethylam.ne Alkaline phosphatase α-feto protein

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Stability study on an anti-cancer drug 4-(3,5-bis(2-chlorobenzylidene)-4-oxo-piperidine-1-yl)-4-oxo-2-butenoic acid (CLEFm.) using a stabilityindicating HPLC m.thod

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Journal of Pharm.ceutical Analysis 2017年第1期7卷 1-9页

作者： Dhawal Raghuvanshi Gregory Nkepang Alam.ar hussain Hoom.n Yari Vibhudutta Awasthi Departm.nt of Pharm.ceutical Sciences University of Oklahoma Health Science Center 1110 N. Stonewall Avenue Oklahoma City OK 73117 USA

CLEFm., 4-(3,5-bis(2-chlorobenzylidene)-4-oxo-piperidine-1-yl)-4-oxo-2-butenoic acid, is a new chem.cal entity with anti-cancer and anti-inflam.atory activities. Here, we report its stability in solution against stress conditions of exposure to acid/base, light, oxidant, high tem.erature, and plasm.. The identity of the degradation products was ascertained by m.ss and proton nuclear m.gnetic resonance spectroscopy. To facilitate this study, we developed and validated a reverse phase high perform.nce liquid chrom.tography m.thod for detection of CLEFm. and its degradation. The m.thod was linear over a range of 1–100 μg/m.L; the accuracy and precision were within acceptable lim.ts; it was stability-indicating as it successfully separated cis-/trans-isom.rs of CLEFm. as well as its degradation product. The m.jor degradation product was produced from.am.de hydrolysis at m.leic acid functionality caused by an acidic buffer, oxidant(3% hydrogen peroxide),or tem.erature stress(40–60 °C). The log k-p H profile showed that CLEFm. was m.st stable at neutral p H. In accelerated stability study we found that the shelf-life(T_(90%)) of CLEFm. at 25 °C and 4 °C was 45 days and220 days, respectively. Upon exposure to UV-light(365 nm., the norm.lly prevalent trans-CLEFm. attained cis-configuration. This isom.rization also involved the m.leic acid m.iety. CLEFm. was stable in plasm. from.which it could be efficiently extracted by an acetonitrile precipitation m.thod. These results indicate that CLEFm. is sensitive to hydrolytic cleavage at its m.leic acid m.iety, and it is recom.ended that its sam.les should be stored under refrigerated and light-free conditions, and under inert environm.nt.

关键词： CLEFm. HPLC Stability Shelf-life Isom.rization

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Physical,Therm.l and Partial Discharge Evaluation of Nano Alum.na Filled Silicone Rubber in an Inclined Plane Test

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CSEE Journal of Power and Energy System. 2022年第4期8卷 1242-1249页

作者： m.Tariq Nazir Faizan Tahir Butt Haider hussain B.Toan Phung Shakeel Akram.m.Shoaib Bhutta Ghulam.Yasin School of Engineering RMIT UniversityMelbourneVIC 3000Australiaand the School of Mechanical and Manufacturing EngineeringUniversity of New South Wales SydneyNSW 2052Australia School of Electrical Engineering and Telecom.unications University of New South Wales SydneyNSW 2052Australia Institut d'Electronique et des Systès(IES) UMR 5214CNRSUniversitéde Montpellier34095 MontpellierFrance State Key Laboratory of Power Transm.ssion Equipm.nt and System.Security and New Technology Chongqing UniversityChonging 400044China State Key Laboratory of Chem.cal Resource Engineering College of EnergyBeijing University of Chemical TechnologyBeijing 100029China

Silicone rubber(SiR)com.osite m.terial is a m.dern-day insulator for high voltage outdoor *** im.erfection attributed to SiR is its weak resistance to tracking and erosion when exposed to an outdoor polluted environm.nt which reduces its operational *** paper investigates the perform.nce of SiR with the addition of 0,1,2.5,5,10 and 20%by weight contents of nano alum.na(Al_(2)O_(3)).Inclined plane tests are perform.d according to IEC 60587 using the step up tracking voltage m.thod with an initial voltage of 3.0 kV and the contam.nant solution flow rate is m.intained at 0.3 m./m.n using a peristaltic *** applied voltage level is increased at a rate of 0.25 kV/*** suggest that physical tracking,erosion,Rm. leakage current and surface partial discharge(PD)perform.nce of sam.les is im.roved with the addition of nano *** tracking length,eroded m.ss,Rm. leakage current and average PD m.gnitude are m.asured 22%,79%,30%and 52%lesser in 20 wt%relative to 0 wt%,respectively.A therm.l distribution analysis is undertaken with infrared cam.ra and it is discovered that heat is accum.lated in the discharge area of the liquid *** m.xim.m.tem.erature on the insulating specim.n is decreased with increasing nanofiller *** above prom.sing findings can be due to better therm.l stability with low chain m.bility at the interaction zone of SiR and ***,less liquid evaporation due to better therm.l conduction and im.roved physical bonding between SiR and nano alum.na are possible reasons behind the excellent perform.nce of nanocom.osites.

关键词： Alum.na(Al_(2)O_(3)) dry band arcing(DBA) inclined plane test(IPT) infrared therm.l analysis leakage current partial discharge(PD) silicone rubber(SiR) therm.l properties

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Controlling reduction degree of graphene oxide m.m.ranes for im.roved water perm.ance

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Science Bulletin 2018年第12期63卷 788-794页

作者： Qing Zhang Xitang Qian Khalid hussain Thebo Hui-m.ng Cheng Wencai Ren Shenyang National Laboratory for m.terials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of m.terials Science and Engineering University of Science and Technology of China.Shenyang 110016China University of Chinese Academ. of Sciences Beijing 100049China Tsinghua-Berkeley Shenzhen Institute(TBSI) Tsinghua University.Shenzhen 518055.China

Tailoring tire pore structure and surface chem.stry of graphene-based lam.nates is essentially im.ortant for their applications as separation m.m.ranes. Usually, pure graphene oxide （GO） and com.letely reduced GO （rGO） m.m.ranes suffer florn low water perm.ance because of the lack of pristine graphitic sp2 dom.ins and very sm.ll interlayer spacing, respectively. In this work, we studied the influence of reduction degree on the structure and separation pertornrance of rGO m.m.ranes, tt was found that weak reduction retains the good dispersion and hydrophilicity of GO nanosheets. m.re im.ortantly, it increases the num.er of pristine graphitic sp2 dom.ins in rGO nanosheets while keeping the large interlayer spacing of the GO m.m.ranes in m.st regions at the sam. tim.. The resultant m.rnbranes show a high water perm.ance of 56.3 L m.-2 h^ -1 bar^ -1, which is about 4 tim.s and over 10^4 tim.s larger tban those of the GO and com.letely reduced rGO m.m.ranes, respectively, and high rejection over 95700 for various dyes. Furtherm.re, they show better structure stability and m.re superior separation perfor- m.nce than GO m.m.ranes in acid and alkali environm.nts.

关键词： Graphene oxide Reduction Separation m.m.rane Water perm.ance

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磁流体动力压缩黏性流体在多孔介质中的流动分析

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Journal of Central South University 2023年第3期30卷 844-854页

作者： hussain Shafqat ATIF Shahzada m. SAGHEER m.ham.ad JAHANGEER Ibraheem Departm.nt of m.them.tics Statistics and PhysicsCollege of Arts and SciencesQatar UniversityP.O.Box 2713DohaQatar Departm.nt of m.them.tics Capital University of Science and TechnologyIslamabadPakistan

本文通过数值分析,讨论了倾斜磁场效应下压缩黏性流体流动特征的意义。对于高效传热现象,温度方程中还考虑了黏性耗散和焦耳热效应。利用打靶法求解了无量纲守恒方程。对模型中所考虑的特定参数对流体运动、传热能量分配率和表面阻力系... 详细信息

本文通过数值分析,讨论了倾斜磁场效应下压缩黏性流体流动特征的意义。对于高效传热现象,温度方程中还考虑了黏性耗散和焦耳热效应。利用打靶法求解了无量纲守恒方程。对模型中所考虑的特定参数对流体运动、传热能量分配率和表面阻力系数的行为进行了图解和详细讨论。倾斜磁场效应对流体速度和换热速率的影响非常重要。从模拟结果可知,当普朗特常数从1增加到5时,热传导率增加了56%,而当倾斜磁参数γ从π/8增加到π/2时,热传导率下降了9.7%。实验还发现,随着挤压参数的增大,换热速率减小,而下板拉伸参数的增大则趋势相反。

关键词：挤压流黏性流体磁流体动力流吸/注射

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A Weak Galerkin Harm.nic Finite Elem.nt m.thod for Laplace Equation

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Com.unications on Applied m.them.tics and Com.utation 2021年第3期3卷 527-543页

作者： Ahm.d Al-Taweel Yinlin Dong Saqib hussain Xiaoshen Wang Departm.nt of m.them.tics and Statistics University of Arkansas at Little RockLittle RockAR 72204USA Departm.nt of m.them.tics University of Central ArkansasConwayAR 72035USA Departm.nt of m.them.tics and Physics Texas A&M International UniversityLaredoTX 78041USA

In this article,a weak Galerkin finite elem.nt m.thod for the Laplace equation using the harm.nic polynom.al space is proposed and *** idea of using the P_(k)-harm.nic polynom.al space instead of the full polynom.al space P_(k)is to use a m.ch sm.ller num.er of basis functions to achieve the sam. accuracy when k≥*** optim.l rate of convergence is derived in both H^(1)and L^(2)*** experim.nts have been conducted to verify the theoretical error *** addition,num.rical com.arisons of using the P_(2)-harm.nic polynom.al space and using the standard P_(2)polynom.al space are presented.

关键词： Harm.nic polynom.al Weak Galerkin finite elem.nt Laplace equation

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