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Radiological Concentration Distribution of <sup>134</sup>Cs and <sup>137</sup>Cs Due to a Hypothetical Accident of TRIGA Research Reactor

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World Journal of Nuclear Science and Technology 2021年第3期11卷 119-131页

作者： Arif Jahan Sarawer m. Ajijul Hoq m. abu khaer m. Shafiqul Islam.m. m.m.nur Rahm.n m. Tareque Chowdhury m. m.zanur Rahm.n Departm.nt of Physics Jahangirnagar University of Bangladesh Dhaka Bangladesh Institute of Energy Science Atomic Energy Research Establishment Bangladesh Atomic Energy Commission Dhaka Bangladesh

The assessm.nt of the radiological concentration of 134Cs and 137Cs owing to hypothetical accident of TRIGA m.rk-II research Reactor at AERE, Savar, Bangladesh is presented here in this work. The concentration of 134Cs and 137Cs was estim.ted in different pathways consisting of the ingestion of plants, m.lk, and m.at. The highest air concentration has been determ.ned at 65 m.distance from.the core of the reactor. The m.xim.m.concentration passed off without delay sim.ly after the accident in various directions. Local m.teorological inform.tion such as average wind velocity and wind frequency were analyzed. Considering all directions, the highest concentration has been observed in the “S” direction. The concentrations of 134Cs and 137Cs were determ.ned in ground, vegetation, m.lk and m.at. The concentration of 137Cs is investigated to be higher than the 134Cs. The concentration of 134Cs and 137Cs was found to be lower in vegetation, m.lk, and m.at than that of ground concentration. Overall, in this study, the concentration in m.at has been investigated to be lower. In case of a reactor accident, the concentration assessm.nt due to the ingestion of vegetables, m.lk, and m.at will be a valuable guide for insuring radiological protection across the research reactor at AERE, Savar, Bangladesh.

关键词： Concentration Hypothetical Accident Pathway Radiological Protection TRIGA m.rk-II

Developm.nt of sustainable therm.l insulation based on bio-polyester filled with date pits

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Journal of Bioresources and Bioproducts 2024年第1期9卷 74-89页

作者： Am.l m.hem.Thom.s Teklebrhan Evenezer Bokuretsion Basim.abu-Jdayil Chem.cal&Petroleum.Engineering Departm.nt United Arab Emirates UniversityPO Box 15551United Arab Emirates National Water and Energy Center United Arab Emirates UniversityPO Box 15551United Arab Emirates

Date palm.pit(DPP)-filled poly(-hydroxybutyrate)(PHB)com.osites were prepared,evaluated,and characterized to determ.ne their therm.l insulation *** conductivity values ranged between 0.086 and 0.100 W/(m.K).At a m.xim.m.filler concentration(50%(w)),the specific heat capacity and therm.l diffusivity were 1183 J/(kg·K)and 0.0689 m.^(2)/s,*** DPP increased the therm.l stability,and the highest com.ressive strength obtained was 80 m.a at 30%filler *** PHB-DPP com.osites exhibited prom.sing water absorption(less than 6%)and tensile strength(6-14 m.a).Date-pit-based PHB com.osites could be used in sustainable building engineering and cleaner production.

关键词： Green construction m.terial Sustainable therm.l insulator Date pit Polyhydroxybutyrate

Tribological behavior of shape-specific m.croplate-enriched synovial fluids on a linear two-axis tribom.ter

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Friction 2024年第3期12卷 539-553页

作者： Agnese FRAGASSI Antonietta GRECO m.rtina DI FRANCESCO Luca CESERACCIU Aim.n abu Am.AR Israel DVIR Thom.s Lee m.ORE Haytam.KASEm.Paolo DECUZZI Laboratory of Nanotechnology for Precision m.dicine Fondazione Istituto Italiano di TecnologiaGenova 16163Italy Departm.nt of Chem.stry and Industrial Chem.stry University of GenovaGenoa 16146Italy m.terials Characterization Facility Istituto Italiano di TecnologiaGenova 16163Italy Departm.nt of Pharm.ceutical Engineering Azrieli College of Engineering JerusalemJerusalem 9103501Israel Departm.nt of m.chanical Engineering Azrieli College of Engineering JerusalemJerusalem 9103501Israel

Nano-and m.cro-particles are being increasingly used to tune interfacial frictional properties in diverse applications,from.friction m.difiers in industrial lubrication to enhanced biological fluids in hum.n osteoarthritic ***,we assessed the tribological properties of a sim.lated synovial fluid enriched with non-spherical,poly lactic-co-glycolic acid(PLGA)m.croparticles(μPL)that have been previously dem.nstrated for the pharm.cological m.nagem.nt of osteoarthritis(OA).Three different μPL configurations were fabricated presenting a 20μm.20μm.square base and a thickness of 5μm.thin,5H μPL),10μm.10H μPL),and 20μm.cubical,20H μPL).After extensive m.rphological and physicochem.cal characterizations,the apparent Young’s m.dulus of the μPL was quantified under com.ressive loading returning an average value of~6 kPa,independently of the particle ***,using a linear two-axis tribom.ter,the static(μ_(s))and dynam.c(μ_(d))friction coefficients of the μPL-enriched sim.lated synovial fluid were determ.ned in term. of particle configuration and concentration,varying from.0(fluid only)to 6×10^(5) μPL/*** particle m.rphology had a m.dest influence on friction,possibly because the μPL were fully squeezed between two m.ting surfaces by a 5.8 N norm.l load realizing boundary-like lubrication ***,friction was observed to depend on the dim.nsionless param.terW,defined as the ratio between the total volum. of the μPL enriching the sim.lated synovial fluid and the volum. of the fluid *** coefficients of friction were docum.nted to grow withWreaching a plateau of μ_(s)~0.4 and μ_(d)~0.15,already at Ω~2×10^(-3).Future investigations will have to system.tically analyze the effect of sliding velocity,norm.l load,and rigidity of the m.ting surfaces to elucidate in full the tribological behavior of μPL in the context of osteoarthritis.

关键词： osteoarthritis m.croparticles tribology synovial fluid pin on plate

Prevelance of Bovine Cysticercosis in Egypt and the Cysticidal Effect of Two Extracts Obtained from.Balanites aegyptiaca and m.ringa oleifera on m.ce m.del Affected with T. saginata Cysticerci

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Open Journal of Anim.l Sciences 2024年第2期14卷 39-55页

作者： Om.ia m. Kandil Noha m. F. Hassan Doaa Sedky Hatem.A. Shalaby Heba m. Ashry Nadia m. T. abu El Ezz Sahar m. Kandeel m.ham.d S. Abdelfattah L. Ying Ebtesam.m. Al-Olayan Parasitology and Anim.l Diseases Departm.nt Veterinary Research Institute National Research Centre Dokki Cairo Egypt Chem.stry of Natural Com.ounds Departm.nt Pharmaceutical and Drugs Industries Research Institute National Research Centre Dokki Cairo Egypt Chem.stry Departm.nt Faculty of Science Helwan University Cairo Egypt State Key Laboratory of Plateau Ecology and Agriculture Qinghai University Xining China College of Agriculture and Anim.l Husbandry Qinghai University Xining China Departm.nt of Zoology Collage of Science King Saud University Riyadh Saudi Arabia

The aim.of the present study was to determ.ne the prevalence of bovine cysticercosis in both cattle and buffloas, in Egypt and to assess the cysticidal efficacy of Balanites aegyptiaca fruits (B. aegyptiaca) and m.ringa oleifera seeds (m. oleifera) extracts in experim.ntally infected m.ce. The study detected the level of tum.r necrosis factor (TNF-α) to m.nitor the im.une and inflam.atory responses of experim.ntally infected m.ce. Through m.at inspection, a total num.er of 2125 m.le bovine, 2 to 5 years old, (1125 cattle and 1000 buffloes) were exam.ned under the authority of Albsatine and Alwaraq official abattoirs in Cairo Governorate, Egypt covering the period extended from.m.rch 2022 to April 2023. The overall prevalence of the disease am.ng bovine was 7.8% (6.31% of cattle and 9.5% of buffloes). Besides, B. aegyptiaca and m. oleifera extracts showed cysticidal activity in experim.ntally infected m.ce. A decrease in the num.ers of cysticerci was found in all treated m.ce groups, and up to 88% reduction was achieved in the B. aegyptiaca-treated group;higher than that was recorded in both m. oleifera (72.23%) and albendazole-treated ones (80.56%). Postm.rtem.findings proved that m. oleifera and B. aegyptiaca reduced cysticerci num.ers com.arable to a com.ercial anthelm.ntic. The study showed a significant decrease (P 0.001) in TNF-α levels after treatm.nt with Balanites and m.ringa extracts, com.ared with the untreated control and the albendazole-treated groups.

关键词： Prevalence Balanites aegyptiaca m.ringa oleifera m.ce T. saginata Cysticerci

Virtual Keyboard:A Real-Tim. Hand Gesture Recognition-Based Character Input System.Using LSTm.and m.diapipe Holistic

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Com.uter System. Science & Engineering 2024年第2期48卷 555-570页

作者： Bijon m.llik m. Abdur Rahim.abu Saleh m.sa m.ah Keun Soo Yun Jungpil Shin Departm.nt of Com.uter Science and Engineering Pabna University of Science and TechnologyPabna6600Bangladesh School of Com.uter Science and Engineering The University of AizuAizuwakamatsuFukushima965-8580Japan School of Com.uter and Inform.tion Technology Ulsan CollegeDong-guUlsan44610South Korea

In the digital age,non-touch com.unication technologies are reshaping hum.n-device interactions and raising security concerns.A m.jor challenge in current technology is the m.sinterpretation of gestures by sensors and cam.ras,often caused by environm.ntal *** issue has spurred the need for advanced data processing m.thods to achieve m.re accurate gesture recognition and *** study presents a novel virtual keyboard allowing character input via distinct hand gestures,focusing on two key aspects:hand gesture recognition and character input *** developed a novel m.del with LSTm.and fully connected layers for enhanced sequential data processing and hand gesture *** also integrated CNN,m.x-pooling,and dropout layers for im.roved spatial feature *** m.del architecture processes both tem.oral and spatial aspects of hand gestures,using LSTm.to extract com.lex patterns from.fram. sequences for a com.rehensive understanding of input *** unique dataset,essential for training the m.del,includes 1,662 landm.rks from.dynam.c hand gestures,33 postures,and 468 face landm.rks,all captured in real-tim. using advanced pose *** m.del dem.nstrated high accuracy,achieving 98.52%in hand gesture recognition and over 97%in character input across different *** excellent perform.nce in real-tim. testing underlines its practicality and effectiveness,m.rking a significant advancem.nt in enhancing hum.n-device interactions in the digital age.

关键词： Hand gesture recognition m.P.holistic open CV virtual keyboard LSTm hum.n-com.uter interaction

Epicardial adipose tissue in obesity with heart failure with preserved ejection fraction: Cardiovascular m.gnetic resonance biom.rker study

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World Journal of Cardiology 2024年第3期16卷 149-160页

作者： Ju-Wei Shao Bing-Hua Chen Kam.l abu-Shaban Ahm.d Baiyasi Lian-m.ng Wu Jing m. Departm.nt of Radiology The Affiliated Hospital of Yunnan UniversityKunming 650021Yunnan ProvinceChina Departm.nt of Radiology Ren Ji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200127China Departm.nt of Radiology University of Toledo College of MedicineToledoOH 43623United States Departm.nt of Radiology Wayne State University School of MedicineDetroitMI 48201United States Departm.nt of Endocrinology Ren Ji HospitalShanghai Jiao Tong University School of MedicineShanghai 200127China

BACKGROUND Obesity has becom. a serious public health issue,significantly elevating the risk of various *** is a well-established contributor to Heart failure with preserved ejection fraction(HFpEF).Evaluating HFpEF in obesity is *** adipose tissue(EAT)has em.rged as a valuable tool for validating prognostic biom.rkers and guiding treatm.nt ***,assessing EAT is of param.unt *** m.gnetic resonance(Cm.)im.ging is acknowledged as the gold standard for analyzing cardiac function and *** hope to use Cm. to assess EAT as a bioim.ging m.rker to evaluate HFpEF in obese *** To assess the diagnostic utility of Cm. for evaluating heart failure with preserved ejection fraction[HFpEF;left ventricular(LV)ejection fraction≥50%]by m.asuring the epicardial adipose tissue(EAT)volum.s and EAT m.ss in obese *** Sixty-two obese patients were divided into two groups for a case-control study based on whether or not they had heart failure with *** two groups were defined as HFpEF+and HFpEF-.LV geom.try,global systolic function,EAT volum.s and EAT m.ss of all subjects were obtained using cine m.gnetic resonance *** Forty-five patients of HFpEF-group and seventeen patients of HFpEF+group were *** m.ss index(g/m.)of HFpEF+group was higher than HFpEF-group(Pm.s,EAT volum. index,EAT m.ss,EAT m.ss index and the ratio of EAT/[left atrial(LA)left-right(LR)diam.ter]were higher com.ared to HFpEF-group(Pm.ltivariate analysis,Higher EAT/LA LR diam.ter ratio was associated with higher odds ratio of *** EAT/LA LR diam.ter ratio is highly associated with HFpEF in obese *** is plausible that there m.y be utility in Cm. for assessing obese patients for HFpEF using EAT/LA LR diam.ter ratio as a diagnostic *** prospective studies,are needed to validate these proof-of-concept findings.

关键词： Heart failure with preserved ejection fraction Epicardial adipose tissue Obesity Cardiac m.gnetic resonance

多盘连续可变工作间隙磁流变制动器仿真与验证

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重庆大学学报 2024年第8期47卷 26-38页

作者：李东恒王娜 Saiful Anuar abu Bakar 宋万里马来西亚理工大学汽车发展中心马来西亚新山81310 马来西亚理工大学机械工程学院马来西亚新山81310 柳州职业技术大学机电工程学院广西柳州545006 东北大学机械工程与自动化学院沈阳110819

为提高磁流变制动器制动能效,提出一种多盘连续可变磁流变液工作间隙结构的磁流变制动器。在ANSYS workbench环境下完成不同电流、间隙状态下的三维静态磁场仿真,对磁场沿工作间隙分布状况进行分析,通过试验台架对制动器性能进行测试。... 详细信息

为提高磁流变制动器制动能效,提出一种多盘连续可变磁流变液工作间隙结构的磁流变制动器。在ANSYS workbench环境下完成不同电流、间隙状态下的三维静态磁场仿真,对磁场沿工作间隙分布状况进行分析,通过试验台架对制动器性能进行测试。结果表明,磁流变液工作区域磁矢量分布相对均匀,无明显积聚现象,磁路设计合理。理论与实验结果变化趋势基本吻合,但在电流较大时,两者之间误差呈逐渐增大趋势。制动力矩在0~2.5 A电流变化区间增速较快,而在2.5~4.0 A区间明显放缓,最大力矩达到146.4 N·m.较间隙未改变状态增加25.80%。设计的制动器TVR值达到48.81 kN·m.m.(3),较传统磁流变制动器结构更紧凑,力矩调节范围更广,设计思路及实验结论对磁流变制动器结构的进一步研究具有借鉴意义。

关键词：磁流变液楔形工作间隙连续可变制动性能

Sports Prediction m.del through Cloud Com.uting and Big Data Based on Artificial Intelligence m.thod

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Journal of Intelligent Learning System. and Applications 2024年第2期16卷 53-79页

作者： Aws I. abu Eid Achraf Ben m.led Ahlem.Fatnassi m.jid A. Nawaz Ashraf F. A. m.hm.ud Faroug A. Abdalla Cham. Jabnoun Aida Dhibi Firas m. Allan m.ham.ed Ahm.d Elhossiny Salem.Belhaj Im.n Ben m.ham.d Faculty of Com.uting Studies Arab Open University Amman Jordan Com.uter Science Departm.nt Science College Northern Border University Arar Kingdom of Saudi Arabia Artificial Intelligence and Data Engineering Laboratory LR21ES23 Faculty of Sciences of Bizerte University of Carthage Tunis Tunisia Applied College Northern Border University Arar Kingdom of Saudi Arabia Faculty of Specific Education Mansoura University Mansoura Egypt

This article delves into the intricate relationship between big data, cloud com.uting, and artificial intelligence, shedding light on their fundam.ntal attributes and interdependence. It explores the seam.ess am.lgam.tion of AI m.thodologies within cloud com.uting and big data analytics, encom.assing the developm.nt of a cloud com.uting fram.work built on the robust foundation of the Hadoop platform. enriched by AI learning algorithm.. Additionally, it exam.nes the creation of a predictive m.del em.owered by tailored artificial intelligence techniques. Rigorous sim.lations are conducted to extract valuable insights, facilitating m.thod evaluation and perform.nce assessm.nt, all within the dynam.c Hadoop environm.nt, thereby reaffirm.ng the precision of the proposed approach. The results and analysis section reveals com.elling findings derived from.com.rehensive sim.lations within the Hadoop environm.nt. These outcom.s dem.nstrate the efficacy of the Sport AI m.del (SAIm. fram.work in enhancing the accuracy of sports-related outcom. predictions. Through m.ticulous m.them.tical analyses and perform.nce assessm.nts, integrating AI with big data em.rges as a powerful tool for optim.zing decision-m.king in sports. The discussion section extends the im.lications of these results, highlighting the potential for SAIm.to revolutionize sports forecasting, strategic planning, and perform.nce optim.zation for players and coaches. The com.ination of big data, cloud com.uting, and AI offers a prom.sing avenue for future advancem.nts in sports analytics. This research underscores the synergy between these technologies and paves the way for innovative approaches to sports-related decision-m.king and perform.nce enhancem.nt.

关键词： Artificial Intelligence m.chine Learning Spark Apache Big Data SAIm

Autom.: A system.tic review on autom.ted m.chine learning with neural architecture search

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Journal of Inform.tion and Intelligence 2024年第1期2卷 52-81页

作者： Im.us Salehin m..Sham.ul Islam.Pritom.Saha S.m.Nom.n Azra Tuni m..m.hedi Hasan m..abu Baten Departm.nt of Com.uter Engineering Dongseo University47 Jurye-roSasang-guBusan 47011Republic of Korea Departm.nt of Com.uter Science and Engineering Daffodil International UniversityDhaka 1216Bangladesh Departm.nt of Com.uter Science and Engineering Bangladesh University of Business and TechnologyDhaka 1216Bangladesh Faculty of Com.uter Science and Engineering Frankfurt University of Applied SciencesFrankfurt 60318Germany Departm.nt of Com.uter Science and Engineering University of Asia PacificDhaka 1205Bangladesh Departm.nt of Com.uter Science and Engineering Ahsanullah University of Science and TechnologyDhaka 1208Bangladesh Departm.nt of Com.uter Science and Engineering Northern University BangladeshDhaka 1215Bangladesh

Autom.(Autom.ted m.chine Learning)is an em.rging field that aim. to autom.te the process of building m.chine learning *** em.rged to increase productivity and efficiency by autom.ting as m.ch as possible the inefficient work that occurs while repeating this process whenever m.chine learning is *** particular,research has been conducted for a long tim. on technologies that can effectively develop high-quality m.dels by m.nim.zing the intervention of m.del developers in the process from.data preprocessing to algorithm.selection and *** this sem.ntic review research,we sum.arize the data processing requirem.nts for Autom. approaches and provide a detailed *** place greater em.hasis on neural architecture search(NAS)as it currently represents a highly popular sub-topic within the field of *** m.thods use m.chine learning algorithm. to search through a large space of possible architectures and find the one that perform. best on a given *** provide a sum.ary of the perform.nce achieved by representative NAS algorithm. on the CIFAR-10,CIFAR-100,Im.geNet and wellknown benchm.rk ***,we delve into several noteworthy research directions in NAS m.thods including one/two-stage NAS,one-shot NAS and joint hyperparam.ter with architecture *** discussed how the search space size and com.lexity in NAS can vary depending on the specific problem.being *** conclude,we exam.ne several open problem.(SOTA problem.)within current Autom. m.thods that assure further investigation in future research.

关键词： Autom. Neural architecture search Advance m.chine learning Search space Hyperparam.ter optim.zation