检索结果-南通市图书馆

Overall Assessment of Heat Transfer for a Rarefied Flow in a microchannel with Obstacles Using Lattice Boltzmann method

引用

工程与科学中的计算机建模(英文) 2024年第1期138卷 273-299页

作者： Siham Hammid Khatir Naima Omolayo m.Ikumapayi Cheikh Kezrane Abdelkrim Liazid Jihad Asad mokdad Hayawi rahman Farhan Lafta Rashid Naseer Ali Hussien Younes menni Laboratory of Development in mechanics and materials(LDmm) Zian Achour UniversityDjelfaPB 3117Algeria Department of Technology University Center Salhi Ahmed Naama(Ctr.Univ.Naama)P.O.Box 66Naama45000Algeria Department of mechanical and mechatronics Engineering Afe Babalola University Ado Ekiti360101Nigeria Departement of Physics Faculty of ScienceAbou Bekr Belkaid UniversityTlemcen13000Algeria Department of Physics Faculty of Applied SciencesPalestine Technical University-KadoorieTulkarmPalestine Aeronautical Technical Engineering Al-Farahidi UniversityBaghdad10011Iraq mechanical Engineering Department University of KerbalaKarbala56001Iraq Information and Communication Technology Research Group Scientific Research CenterAl-Ayen UniversityThi-QarIraq National University of Science and Technology Dhi QarIraq

The objective of this investigation is to assess the effect of obstacles on numerical heat transfer and fluid flow momentum in a rectangular microchannel(mC).Two distinct configurations were studied:one without obstacles and the other with alternating obstacles placed on the upper and lower *** research utilized the thermal lattice Boltzmann method(LBm),which solves the energy and momentum equations of fluids with the BGK approximation,implemented in a Python coding *** jump and slip velocity conditions were utilized in the simulation for the mC and extended to all obstacle *** study aims to analyze the rarefaction effect,with Knudsen numbers(Kn)of 0.012,0.02,and *** outcomes indicate that rarefaction has a significant impact on the velocity and temperature *** presence of nine obstacles led to slower fluid movement inside the microchannel mC,resulting in faster cooling at the *** mCs with obstacles,the rarefaction effect plays a crucial role in decreasing the Nusselt number(Nu)and skin friction coefficient(Cf).Furthermore,the study demonstrated that the obstacles played a crucial role in boosting fluid flow and heat transfer in the *** findings suggest that the examined configurations could have potential applications as cooling technologies in micro-electro-mechanical systems and microdevice applications.

关键词： microfluid rarefied flow LBm microchannel Knudsen number numerical simulation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Recent progress in two-dimensional metallenes and their potential application as electrocatalyst

引用

Journal of Energy Chemistry 2024年第7期94卷 577-598页

作者： Umer Shahzad mohsin Saeed muhammad Fazle Rabbee Hadi m.marwani Jehan Y.Al-Humaidi muhammad Altaf Raed H.Althomali Kwang-Hyun Baek md.Rabiul Awual mohammed m.rahman Department of Chemistry Faculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia Department of Biotechnology Yeungnam UniversityGyeongsanSouth Korea Center of Excellence for Advanced materials Research(CEAmR) King Abdulaziz UniversityJeddah 21589Saudi Arabia Department of Chemistry College of SciencePrincess Nourah Bint Abdulrahman UniversityP.O.BOX 84428Riyadh 11671Saudi Arabia Department of Chemistry Center of Excellence for Innovation in Chemistry(PERCH-CIC)Center of Excellence in Materials Science and TechnologyFaculty of ScienceChiang Mai UniversityChiang Mai 50200Thailand Department of Chemistry College of Art and SciencePrince Sattam Bin Abdulaziz UniversityWadi Al-Dawasir 11991Saudi Arabia Western Australian School of mines:minerals Energy and Chemical EngineeringCurtin UniversityGPO Box U 1987PerthWA 6845Australia

In this article,we looked at metallenes,a novel class of two-dimensional(2D)metals that are attracting interest in the energy and catalysis *** is one area where their exceptional physicochemical and electrical characteristics might be *** are unique because they include several metal atoms that are not in a coordinated *** makes them more active and improves their atomic uti-lization,which in turn increases their catalytic *** article delves into the potential of two-dimensional metals as electrocatalysts for carbon dioxide reduction,fuel oxidation,oxygen evolution,and oxygen reduction reactions in the context of sustainable energy *** to the exception-ally high surface-to-volume ratio,large surface area as well as their optimized atomic use efficiency,2D materials defined by atomic layers are crucial for surface-related sustainable energy *** to its exceptional properties,such as high conductivity and the ability to enhance the exposure of active metal sites,2D metallenes have recently attracted a lot of interest for use in catalysis,electronics,and energy-related *** their highly mobility,adjustable surface states,and electrical struc-tures that can be fine-tuned,2D metallenes are promising nanostructure materials for use in energy con-version with the sustainable applications.

关键词： metallenes Electrocatalysts Electrochemical processes Atomically thin structure

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Trehalose:A sugar molecule involved in temperature stress management in plants

引用

The Crop Journal 2024年第1期12卷 1-16页

作者： Ali Raza Savita Bhardwaj md Atikur rahman Pedro García-Caparrós madiha Habib Faisal Saeed Sidra Charagh Christine H.Foyer Kadambot H.m.Siddique Rajeev K.Varshney College of Agriculture Fujian Agriculture and Forestry University(FAFU)Fuzhou 350002FujianChina Department of Botany School of Bioengineering and BiosciencesLovely Professional UniversityPhagwara 144411India Department of Botany MCM DAV CollegeKangraHimachal Pradesh 176001India Grassland and Forage Division National Institute of Animal ScienceRural Development AdministrationCheonan 31000Republic of Korea Agronomy Department of Superior School Engineering University of AlmeríaAlmeríaSpain National Institute for Genomics and Advanced Biotechnology National Agricultural Research CentrePark Rd.Islamabad 45500Pakistan Agriculture Health and Environment DepartmentNatural Resources InstituteFaculty of Engineering&ScienceUniversity of GreenwichKent ME44TBUK State Key Laboratory of Rice Biology China National Rice Research InstituteChinese Academy of Agricultural SciencesHangzhouZhejiangChina School of Biosciences College of Life and Environmental SciencesUniversity of BirminghamEdgbaston B152TTUK The UWA Institute of Agriculture The University of Western AustraliaCrawleyPerth 6009Australia WA State Agricultural Biotechnology Centre Centre for Crop and Food InnovationFood Futures InstituteMurdoch UniversityMurdochWA 6150Australia

Trehalose(Tre)is a non-reducing disaccharide found in many species,including bacteria,fungi,invertebrates,yeast,and even plants,where it acts as an osmoprotectant,energy source,or protein/membrane *** relatively small amounts in plants,Tre concentrations increase following exposure to abiotic ***-6-phosphate,a precursor of Tre,has regulatory functions in sugar metabolism,crop production,and stress *** the various abiotic stresses,temperature extremes(heat or cold stress)are anticipated to impact crop production worldwide due to ongoing climate *** small amounts of Tre can mitigate negative physiological,metabolic,and molecular responses triggered by temperature *** also interacts with other sugars,osmoprotectants,amino acids,and phytohormones to regulate metabolic reprogramming that underpins temperature stress *** plants expressing Tre-synthesis genes accumulate Tre and show improved stress ***-wide studies of Tre-encoding genes suggest roles in plant growth,development,and stress *** review discusses the functions of Tre in mitigating temperature stress—highlighting genetic engineering approaches to modify Tre metabolism,crosstalk,and interactions with other molecules—and in-silico approaches for identifying novel Tre-encoding genes in diverse plant *** consider how this knowledge can be used to develop temperature-resilient crops essential for sustainable agriculture.

关键词： Abiotic stress Gene expression Genetic engineering Osmolyte Trehalose-6-phosphate

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Endoscopic push through tragal cartilage tympanoplasty: A 10-year retrospective review of our technique and outcomes

引用

World Journal of Otorhinolaryngology 2024年第2期11卷 18-24页

作者： K m Abidur rahman Khalid majeed Emma Finnegan Ivan Keogh Ear Noseand Throat/Head and Neck SurgeryGalway University HospitalGalway H91 YR71Ireland Academic Department of Otorhinolaryngology and Head and Neck Surgery University of GalwayGalway H91 TK33Ireland

BACKGROUND Endoscopic ear surgery(EES)provides a magnified,high-definition view of the otological surgical *** allows otologists to avoid surgical incisions and associated postoperative *** is an ideal technique for the perfor-mance and teaching of *** To examine the efficacy of total Endoscopic Push Through Tragal Cartilage Tympanoplasty(EPTTCT),at our institution over a 10-year *** A retrospective analysis of 168 cases of EPTTCT for closure of small to medium tympanic membrane perforations from 2013-2023 was *** sex,age range(pediatric vs adult),etiology of injury,success rate,complications,and postoperative hearing status were *** Graft uptake results indicated success in 94%of patients,with less than a 2%complication *** pure tone audiometry demonstrated hearing status improvement in 69%of *** EPTTCT has been shown to be effective in tympanic membrane perforation closures with minimal *** study further demonstrates the efficacy and safety of these procedures in a single-center review.

关键词： Total endoscopic ear surgery Otology Tympanoplasty Hearing Perforation Tragal cartilage graft

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

An Investigation into Forced Convection of a Nanofluid Flowing in a Rectangular microchannel under the Influence of a magnetic Field

引用

Fluid Dynamics & materials Processing 2024年第2期20卷 311-323页

作者： muataz S.Alhassan Ameer A.Alameri Andrés Alexis Ramírez-Coronel I.B.Sapaev Azher m.Abed David-Juan Ramos-Huallpartupa rahman S.Zabibah Division of Advanced Nanomaterial Technologies Scientific Research CenterAl-Ayen UniversityThi-QarIraq Department of Chemistry College of ScienceUniversity of BabylonBabylonIraq Research Group in Educational Statistics National University of EducatiosnAzoguesEcuador Department Physics and Chemistry Tashkent Institute of Irrigation and Agricultural Mechanization EngineersNational Research UniversityTashkentUzbekistan Akfa University TashkentUzbekistan New Uzbekistan University TashkentUzbekistan Department of Airconditioning and Refrigeration Engineering Al-Mustaqbal University CollegeHilla51001Iraq Academic Department of Agro-Industrial Engineering and Technology Universidad Nacional JoséMaría ArguedasApurimacPerú The Islamic University NajafIraq

In line with recent studies,where it has been shown that nanoﬂuids containing graphene have a stronger capacity to boost the heat transfer coefﬁcient with respect to ordinary nanoﬂuids,experiments have been conducted using water with cobalt ferrite/graphene *** particular,a circular channel made of copper subjected to a constant heatﬂux has been *** nanoparticles are sensitive to the presence of a magneticﬁeld,different conditions have been examined,allowing both the strength and the frequency of such aﬁeld to span relatively wide ranges and assuming different concentrations of *** to theﬁndings,the addition of nanoparticles to theﬂuid causes its rotation speed to increase by a factor of two,whereas ultraviolet radiation plays a negligible *** amount of time required to attain the maximum rotation speed of the nanoﬂuid and the Nusselt number have been measured under both constant and alternating magneticﬁelds for a ferroﬂuid with a concentration of 0.5%and atﬂow Reynolds number of 550 and 1750.

关键词： Nano fluid rectengular tube magnetic field

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Development of Framework for ACI-Powered Human Resource Recruitment Assistant

引用

management Studies 2024年第3期12卷 182-187页

作者： md Jawadur rahman Gabriele m.murry Stephanie Schmitt-Rüth OTH Amberg-Weiden AmbergGermany

The landscape of human resource management within large enterprises necessitates efficient and unbiased recruitment practices to ensure organisational effectiveness and foster diversity(Ayoko&Fujimoto,2023).Traditional hiring processes often create biases,which cause additional challenges in achieving proper objectives(Bogen,2021).According to Workable(***),the average time to fill a job requisition is 41 days(Howden,2023).This paper proposes a framework for the development and implementation of an Artificially Capable Intelligent(ACI)-powered Human Resource(HR)Assistant for large enterprises(possibly more than 300 employees)to eliminate these unnecessary challenges caused by biases in hiring practices,therefore directly addressing fair and just participation in society and the world of *** framework integrates ACI technologies,particularly candidate identification,to revolutionise HR *** leveraging ACI algorithms,the proposed hyper-realistic assistant aims to revolutionise the recruitment *** will significantly reduce the average time to fill job ***,the ACI-powered system is designed to mitigate biases inherent in traditional hiring practices,thus fostering a fair and inclusive environment for all candidates in the shortest possible time *** paper includes the key components and working processes of the ACI-powered HR Assistant *** a comprehensive theoretical analysis,the paper investigates the system’s working process and how the framework aligns with the goal of promoting a fair and participatory environment in the world of ***,the proposed framework represents a main step towards enhancing organisational effectiveness,fostering diversity,and advancing equitable recruitment practices in the futuristic workplace.

关键词： artificial capable intelligence human resource

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

An Overview of Soil Improvement through Ground Grouting

引用

Journal of Geoscience and Environment Protection 2024年第1期12卷 51-63页

作者： md Ratan Bhuiyan Salequr rahman masum md Tushar Parvej S m Sanuwar School of Civil Engineering Hydraulic Engineering Tianjin University Tianjin China College of Civil Engineering and Architecture China Three Gorges University Yichang China

Soil is an essential component of what surrounds us in nature, providing as the basis for our infrastructure and construction. However, soil is not always suitable for construction due to a variety of geotechnical issues such as inadequate bearing capacity, excessive settlement, and liquefaction susceptibility. Through improving the engineering qualities of soil, such as strength, permeability, and stability, ground grouting is a specific geotechnical method used. Using a fluid grout mixture injected into the subsurface, holes are filled and weak or loose strata are solidified as the material seeps into the soil matrix. The approach’s adaptability in addressing soil-related issues has made it more well-known in the fields of civil engineering and construction. In the end, this has improved groundwater management, foundation support, and overall geotechnical performance.

关键词： Grouting Soil Improvement Permeation Grouting Compaction Grouting and Jet Grouting

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Entropy Quantization of Schwarzschild Black Hole

引用

Communications in Theoretical Physics 2019年第3期71卷 307-311页

作者： m.atiqur rahman Department of Applied mathematics Rajshahi University

The surface gravity of Schwarzschild black hole can be quantized from the test particle moving around different energy states analog to the Bohr's atomic model. We have quantized the Hawking temperature and entropy of Schwarzschild black hole from quantization of surface gravity. We also have shown that the change of entropy reduces to zero when the boundary shrinks to very small size.

关键词： Hawking temperature entropy Schwarzschild black hole

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Removal of Dyes in Aqueous media with Hydrochar Base of Solid Tanneries Waste: Optimization Process and Application

引用

materials Sciences and Applications 2024年第7期15卷 168-185页

作者： Abdoul Ntieche rahman Gervais Ndongo Kounou Sakué Ngankam Eric Tamafo Fouegue Aymard Didier Kouotou Daouda Abdelaziz Baçaoui Department of Chemistry Higher Teacher Training College Bertoua The University of Bertoua Bertoua Cameroon Department of Fundamental Sciences Institute of Wood Technology of Mbalmayo University of Yaound I Balmayo Cameroon Department of Chemistry Faculty of Science Semlalia University of Cady Ayyad Marrakech Morocco

The Response Surface methodology (RSm) was used to optimise the conditions of preparation of activated hydrochar from tannery solid waste by hydrothermal carbonisation (HTC). The main factors such as residence time, moisture content and final carbonisation temperature were investigated during the optimisation of hydrochar preparation conditions. The three responses investigated are hydrochar yield, iodine and methylene blue indices. The results of experimental analyses showed that the yield of hydrochar decreases with increasing final temperature, leading to the formation of micropores inside the carbonaceous solid. The optimum conditions for preparing the following hydrochar were obtained: 83.10%, 390.44 mg∙g−1 and 259.63 mg∙g−1 respectively for the hydrochar yield, the iodine and methylene blue indices. The specific surface area of prepared hydrochar is 849.160 m2/g, SEm micrographs showed a porous heterogeneous surface and particularly, the hydrochar surface also revealed external pores on the hydrochar surface which acted as a pathway to the micropores. Fourier transform infrared (FTIR), however, showed a predominance of acid functions on the surface of the carbonaceous solids. Tests were carried out to eliminate indigo carmine in aqueous media. Activated hydrochar showed a high level of activity, with the Langmuir and Freundlich isotherms giving an adsorption quantity of 354.610 mol/g and a KF constant of 468.2489, respectively. The findings of the research revealed that hydrochar produced is well adapted for dyes removal.

关键词： Response Surface methodology Hydrochar Tannery Hydrothermal Carbonization Adsorption

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

COVID-19: Challenges and viewpoints from low-and-middle-income Asian countries perspectives

引用

Journal of Safety Science and Resilience 2020年第2期1卷 70-72页

作者： Yasmin Jahan atiqur rahman Graduate School of Biomedical and Health Sciences Hiroshima University1-2-3 Minami-kuHiroshima-shi 734-0046Japan Department of Society and Culture(IKOS) Division Ageing and Social ChangeLinköping UniversitySweden

The crisis of coronavirus disease(COVID-19)is growing and has a potential impact on low-and-middle-income countries(LmICs),particularly in Asian regions,which,have reported less so *** main purpose of this article is to discuss the challenges of COVID-19 management in Asian LmICs and propose some future guidelines to control the transmission and *** to a highly dense population,low-resourced health system,lack of testing kit,and tracing,the ultimate impact could be *** is highly likely that Asian LmICs were not in the center of receiving high priority by the international community in order to take effective prevention *** might upsurge *** the symptoms,mode of transmission varies largely due to a number of unknown clinical features of the virus,defining a risk group only based on some limited criteria such as age and disease with comorbidity could be *** some of the Asian LmICs launched contact tracing ***,the study has identified several healthcare challenges in Asian LmICs such as shortage of supply of PPE,inadequate long-term care services,the socio-cultural differences which require utmost *** addition,to control infection and enhance prevention,some pertinent problems need to be *** on that,some multifactorial approaches can be taken in line with international ***,this paper recommends developing a strong and resilient healthcare monitoring system.

关键词： COVID-19 Asian Low-middle income countries Challenges control Prevention

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：