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Grindability Evaluation of Ultrasonic Assisted Grinding of Silicon Nitride Ceramic Using Minimum Quantity Lubrication Based SiO_(2)Nanofluid

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Chinese Journal of Mechanical Engineering 2024年第2期37卷 115-136页

作者： Yusuf Suleiman Dambatta Changhe Li Mohd Sayuti Ahmed A D Sarhan Min Yang Benkai Li Anxue Chu Mingzheng Liu Yanbin Zhang Zafar said Zongming Zhou School of Mechanical and Automotive Engineering Qingdao University of TechnologyQingdao 266520China Mechanical Engineering Department Ahmadu Bello UniversityZaria 810106Nigeria Mechanical Engineering Department University of Malaya50603 Kuala LumpurMalaysia Department of Mechanical Engineering King Fahd University of Petroleum&Minerals31261 DhahranSaudi Arabia State Key Laboratory of Ultra-Precision Machining Technology Department of Industrial and Systems Engineer-ingThe Hong Kong Polytechnic UniversityHong KongChina College of Engineering University of Sharjah27272 SharjahUnited Arab Emirates Hanergy(Qingdao)Lubrication Technology Co. Ltd.Qingdao 266100China

Minimum quantity Lubrication(MQL)is a sustainable lubrication system that is famous in many machining *** involve the spray of an infinitesimal amount of mist-like lubricants during machining *** MQL system is affirmed to exhibit an excellent machining performance,and it is highly *** nanofluids are understood to exhibit excellent lubricity and heat evacuation capability,compared to pure oil-based MQL *** have shown that the surface quality and amount of energy expended in the grinding operations can be reduced considerably due to the positive effect of these *** work presents an experimental study on the tribological performance of SiO_(2)nanofluid during grinding of Si_(3)N_(4)*** effect different grinding modes and lubrication systems during the grinding operation was also *** concentrations of the SiO_(2)nanofluid was manufactured using canola,corn and sunflower *** quantitative evaluation of the grinding process was done based on the amount of grinding forces,specific grinding energy,frictional coefficient,and surface *** was found that the canola oil exhibits optimal lubrication performance compared to corn oil,sunflower oil,and traditional lubrication ***,the introduction of ultrasonic vibrations with the SiO_(2)nanofluid in MQL system was found to reduce the specific grinding energy,normal grinding forces,tangential grinding forces,and surface roughness by 65%,57%,65%,and 18%***,regression analysis was used to obtain an optimum parameter *** observations from this work will aid the smooth transition towards ecofriendly and sustainable machining of engineering ceramics.

关键词： Minimum quantity lubrication(MQL) Ultrasonic assisted grinding(UAG) Eco-friendly lubricants Nanofluid Grinding Ceramic

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Research on the Application of Montessori Education Method in Cognitive Training of Patients with Alzheimer’s Disease

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Journal of Clinical and Nursing Research 2024年第5期8卷 336-341页

作者： Wei Wang Faridah Mohd said Department of Nursing Faculty of NursingLincoln University College(LUC)47301 Petaling JayaSelangorMalaysia Department of Nursing Faculty of NursingJiangsu Vocational College of MedicineYancheng 224005Jiangsu ProvinceChina

Objective:To study the application of the Montessori education method in cognitive training in patients with Alzheimer’s disease(AD).Methods:40 cases of senile dementia patients who were admitted to our hospital from January 2022 to January 2023 were selected and randomly divided into an intervention group and a control group according to the single and double number table method,with 20 cases in each *** intervention group used the Montessori education method,the principle of which was to implement individualized health interventions based on the individual conditions of the patients,for a period of 6 months;the control group was given conventional treatment and nursing of the *** Mini-Mental State Examination(MMSE)was used to compare the effects of the two groups of patients before and after health intervention and conduct statistical ***:The score of the intervention group was higher than that of the control group,and there was a statistical difference between the two(Pion:implementing the Montessori education method for diagnosed Alzheimer’s patients can effectively improve their cognitive function and delay the progress of further dementia.

关键词： Montessori education method Alzheimer’s disease Cognitive training

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Research on the Establishment of a Long-Term Care System for the Elderly with Alzheimer’s Disease Under the Background of Long-Term Care insurance: A Literature Review

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Journal of Clinical and Nursing Research 2024年第5期8卷 348-355页

With the aging of the country’s population structure,the problem of social pensions is becoming more and more *** for the issue of social pension,the elderly with Alzheimer’s disease are a special group,and the issue of care services for these elderly has attracted widespread attention from ***,judging from the current level of social security provided to the elderly with dementia in the country,there is a serious imbalance between supply and ***,this problem needs to be solved urgently and is of great significance for further improving the country’s social pension security *** care is limited to hospitals and mainly focuses on the patient’s *** fail to receive comprehensive care services and the effect is not ***,in order to improve patients’cognitive function and quality of life,and learn from international experience,a“community-institution-home”three-dimensional linkage care model based on long-term care insurance can be *** application of this model can effectively solve and further improve the country’s elderly care and social security system.

关键词： Long-term care insurance Elderly Alzheimer’s disease Long-term care system

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Potential of eNose Technology for Monitoring Biological CO_(2) Conversion Processes

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Transactions of Tianjin University 2024年第5期30卷 381-394页

作者： Muhammad Awais Syed Muhammad Zaigham Abbas Naqvi sami Ullah Khan Mijaz Khan Sherzod Abdullaev Junfeng Wu Wei Zhang Jiandong Hu Department of Electrical Engineering Henan Agricultural UniversityZhengzhou 450002China Henan international Joint Laboratory of Laser Technology in Agriculture Sciences Zhengzhou 450002China State Key Laboratory of Wheat and Maize Crop Science Zhengzhou 450002China Department of Mathematics Namal UniversityTalagang RoadMianwali 42250Pakistan Department of Mechanical Engineering Prince Mohammad Bin Fahd University31952 Al-KhobarKingdom of Saudi Arabia Faculty of Chemical Engineering New Uzbekistan UniversityTashkentUzbekistan Scientific and innovation Department Tashkent State Pedagogical UniversityTashkentUzbekistan

Electronic nose(eNose) is a modern bioelectronic sensor for monitoring biological processes that convert CO_(2) into valueadded products, such as products formed during photosynthesis and microbial fermentation. eNose technology uses an array of sensors to detect and quantify gases, including CO_(2), in the air. This study briefly introduces the concept of eNose technology and potential applications thereof in monitoring CO_(2) conversion processes. it also provides background information on biological CO_(2) conversion processes. Furthermore, the working principles of eNose technology vis-à-vis gas detection are discussed along with its advantages and limitations versus traditional monitoring methods. This study also provides case studies that have used this technology for monitoring biological CO_(2) conversion processes. eNose-predicted measurements were observed to be completely aligned with biological parameters for R~2 values of 0.864, 0.808, 0.802, and 0.948. We test eNose technology in a variety of biological settings, such as algae farms or bioreactors, to determine its effectiveness in monitoring CO_(2) conversion processes. We also explore the potential benefits of employing this technology vis-à-vis monitoring biological CO_(2) conversion processes, such as increased reaction efficiency and reduced costs versus traditional monitoring methods. Moreover, future directions and challenges of using this technology in CO_(2) capture and conversion have been discussed. Overall, we believe this study would contribute to developing new and innovative methods for monitoring biological CO_(2) conversion processes and mitigating climate change.

关键词： Electronic nose(eNose) CO_(2)conversion Biological monitoring Gas detection Bioelectronic nose

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Numerical Simulation of Dam-Break Flows Using Radial Basis Functions: Application to Urban Flood inundation

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American Journal of Computational Mathematics 2024年第3期14卷 318-332页

作者： Abdoulhafar Halassi Bacar said Charriffaini Rawhoudine Laboratoire des Mathmatiques Statistiques Informatique et Applications (LMSIA) Dpartement des Mathmatiques Physique-Chimie et Informatique (MPCI) Facult des Sciences et Techniques Universit des Comores Moroni Comoros

Dam-break flows pose significant threats to urban areas due to their potential for causing rapid and extensive flooding. Traditional numerical methods for simulating these events struggle with complex urban landscapes. This paper presents an alternative approach using Radial Basis Functions to simulate dam-break flows and their impact on urban flood inundation. The proposed method adapts a new strategy based on Particle Swarm Optimization for variable shape parameter selection on meshfree formulation to enhance the numerical stability and convergence of the simulation. The method’s accuracy and efficiency are demonstrated through numerical experiments, including well-known partial and circular dam-break problems and an idealized city with a single building, highlighting its potential as a valuable tool for urban flood risk management.

关键词： Dam-Break Flows Numerical Simulation Shallow Water Equations Radial Basis Functions Urban Flood inundation

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全球化及其对21世纪巴基斯坦的政治和社会影响之争论

全球化及其对21世纪巴基斯坦的政治和社会影响之争论

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作者： Ali said 吉林大学

学位级别：硕士

全球化是全球出现的一种重大现象。与这种转变相关的变化在存在的方方面面都是深刻而明显的。与前现代全球化时代(特别是第一次世界大战后)相比,科学技术取得了重大进步,经济活动大幅增长,对权力的理解和利用发生了根本性转变,世界各地... 详细信息

全球化是全球出现的一种重大现象。与这种转变相关的变化在存在的方方面面都是深刻而明显的。与前现代全球化时代(特别是第一次世界大战后)相比,科学技术取得了重大进步,经济活动大幅增长,对权力的理解和利用发生了根本性转变,世界各地社会文化框架也发生转变。技术进步促进了全球化,为国家、经济和文化创造了一个激烈的竞争环境。全球化是由各种力量推动的,例如先进的信息和通信技术、大众媒体、跨国组织、跨国公司、政府间组织和非政府组织。这些力量对生活的不同方面都有重大影响,包括国家资源生成、经济稳定或不稳定、政治制度影响、社会转型,甚至维持全球权力平衡。复杂的形势要求政府拥有越来越先进的能力,而高质量的国家在当今时代是必不可少的。全球化进程无疑在全球治理结构的政策和执行方面都存在重大缺陷。然而,这些缺点也可以归因于个别政府的内部脆弱性。本论文研究了全球化对21世纪巴基斯坦国家和社会的政治和社会影响;全球化如何影响巴基斯坦的政治,削弱巴基斯坦在21世纪的主权?全球化如何影响巴基斯坦社会,如何改变21世纪巴基斯坦的文化自我?巴基斯坦在21世纪的政治和社会领域都受到全球化的影响。巴基斯坦是一个发展中国家,拥有重要的战略位置、核能力(原子能)、丰富的自然资源、多样化的文明以及年轻人口的强大能力。然而,其政治制度的不稳定状态、经济薄弱和人口分裂正在造成重大障碍,特别是在全球化带来的困难方面。全球化在国家生活的几个方面带来了深刻的变化,这对一个缺乏足够管理能力的国家和社会提出了相当大的挑战。自威斯特伐利亚时代以来,国家一直是全球政治的主要参与者和卓越机构,拥有高度的主权,基本上不受外部和内部力量的影响。在现代,随着全球化势头的增强,非国家机构的影响越来越大,它们对国界的干预也在增加。与任何其他国家一样,巴基斯坦不能将自己与这些影响隔离开来。为了更好地理解这一现象,我们将研究全球化如何影响全球形势,特别是它如何影响巴基斯坦,以便最终验证这些假设。为此,将采用定性研究方法,并制定一个概念框架,以巴基斯坦为例,确定我们可以评估全球化如何影响发展中国家的界限。文化将作为一个变量,分析巴基斯坦文化和社会的西方化和现代化,以确定全球化对巴基斯坦社会的影响。巴基斯坦目前正面临着全球化对其21世纪政治和社会的切实影响。不利的国内环境,主要特点是治理不善、不利的社会经济指标和政治不稳定,阻碍了巴基斯坦有效参与全球化的能力。在这个进步的时代,国家权力的概念发生了转变。常规军事不再是评估一个国家主权地位强弱的唯一标准。国家实力的基本组成部分通常被视为软实力,包括技术实力和经济实力。巴基斯坦尽管是核大国,但容易受到各种形式的内部和外部力量的影响。在全球化时代,巴基斯坦的主权正在受到破坏,而国内力量的进步因素并没有被纳入国家的整体实力。巴基斯坦积极参与全球化进程的障碍可归因于几个原因,包括其经济和技术依赖性、不稳定的治理体系、识字率低以及公众观点不同的分裂社会。技术和金融领域的相互依存使一个国家变得脆弱并依赖世界其他地区或国际组织,从而阻碍了其保持自治和抵抗外部和内部影响的能力。全球化要求在世界范围内实现建立在科学和技术进步基础上的社会现代化。文明现代化进程对于在全球范围内相互联系的国家和社区至关重要。世界各国社会正在通过两种主要方法应对现代化的挑战:追求植根于科学技术进步的真正现代化,或采用西方化——主要体现在文化领域模仿西方现代性。巴基斯坦社会也不能幸免于21世纪全球化的影响,因为它目前正经历着对发达社会的重大影响。该研究考察了全球化对巴基斯坦的现代化、西方化的影响。由于这种暴露,巴基斯坦社会正在吸收西方社会的影响。模仿现象通常被认为是社会的西化,在经济上处于不利地位的文明中普遍存在。国家的显著进步和社会的进步使老牌国家成为欠发达文化的榜样,他们渴望效仿这些文化。巴基斯坦社会缺乏重大的科学和技术进步,以及模仿主要关注文化方面,这表明真正的现代性并没有在这种情况下发生。模范社会所取得的真正进步,从根本上说是建立在它们在科学和技术领域所取得的成就之上的。本论文分别由五章组成。第一章是“导言”,简要介绍了全球化的整个现象,即全球化是全球性的重大发展。与这种程序相关的变化在生活的方方面面都是深刻而明显的。这一现象表明,技术和科学知识取得了重大进步,经济活动大幅增长,力量概念发生了结构性转变。它还强调了研究的背景、研究问题和研究的意义。目前,全球是相互联系的。由于全球化,世界各地的政治、社会、经济和文化联系正在发生变化。由于壁垒的消除、高度的竞争、跨境经济自由化以及购买者的品味和兴趣日益相同,以及国际资本和劳工迁移的灵活性,这些扩大了经济、社会、政治、商业和数据联系。本部分还包含主要论点、研究方法、文献综述和概念框架。第二章是“从政治和

关键词：巴基斯坦政治影响社会影响主权全球化

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Risk Factors Categorizations of ischemic Heart Disease in South-Western Bangladesh

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Data intelligence 2024年第3期6卷 834-868页

作者： M.Raihan sami Azam Laboni Akter Md.Mehedi Hassan Ryana Quadir Asif Karim Saikat Mondal Arun More Department of Computer Science and Engineering North Western UniversityKhulna 9100Bangladesh Faculty of Science and Technology Charles Darwin UniversityNT 0909Australia Departmentof Biomedical Engineering Khulna University of Engineering&TechnologyKhulnaBangladeh Computer Science and Engineering Discipline Khulna UniversityKhulna 9208Bangladesh Department of Computer Science and Engineering Daffodil International University(DIU)Bangladesh Department of Cardiology Ter Institute of Rural Health and ResearchMurud-413510India

ischemic heart disease(iHD)is one of the leading causes of death ***,different geographic regions show different variations of the risk factors of this disease based on the different lifestyles of *** study examines the current iHD condition in southern Bangladesh,a Southeast Asian middle-income *** main approach to this research is an Al-based proposal of a reduced set of the greatest impact clinical traits that may cause *** approach attempts to reduce iHD morbidity and mortality by early detection of risk factors using the reduced set of clinical ***,diagnostic,and symptomatic features were considered for analysing this clinical *** pre-processing utilizes several machine learning techniques to select significant features and make meaningful interpretations.A proposed voting mechanism ranked the selected 138 features by their impact *** this regard,diverse patterns in correlations with variables,including age,sex,career,family history,obesity,etc.,were calculated and explained in terms of voting *** the 138 risk factors,three labels were categorized:high-risk,medium-risk,and low-risk features;19 features were regarded as high,25 were medium,and 94 were considered low impactful *** research's technological methodology and practical goals provide an innovative and resilient framework for addressing iHD,especially in less developed cities and townships of Bangladesh,where the general population's socioeconomic conditions are often *** data collection,pre-processing,and use of this study's complete and comprehensive iHD patient dataset is another innovative *** believe that other relevant research initiatives will benefit from this work.

关键词： ischemic heart disease Machine learning CVD Data categorization Medical data

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Management of cytomegalovirus infection after liver transplantation

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World Journal of Transplantation 2024年第3期14卷 30-39页

作者： Zeynep Burcin Yilmaz Funda Memisoglu sami Akbulut infectious Diseases and Clinical Microbiology Inonu University Faculty of MedicineMalatya 44280Türkiye Surgery and Liver Transplant institute Inonu University Faculty of MedicineMalatya 44280Türkiye

Cytomegalovirus(CMV)infection is one of the primary causes of morbidity and mortality following liver transplantation(LT).Based on current worldwide guidelines,the most effective strategies for avoiding post-transplant CMV infection are antiviral prophylaxis and pre-emptive ***-igG serology is the established technique for pretransplant screening of both donors and *** clinical presentation of CMV infection and disease exhibits variability,prompting clinicians to consistently consider this possibility,partic-ularly within the first year post-transplantation or subsequent to heightened *** annual symposia to discuss CMV prevention and how treatment outcomes can be improved,evidence on the incorporation of immune functional tests into clinical practice is presented,and the results of studies with new antiviral treatments are *** there are ongoing studies on the use of letermovir and maribavir in solid organ transplantation,a consensus reflected in the guidelines has not been *** the most appro-priate strategy at the individual level appears to be the key to enhancing *** prevention strategies reduce the risk of CMV disease,the disease can still occur in up to 50%of high-risk patients.A balance between the risk of infection and disease development and the use of immunosuppressants must be considered when talking about the proper management of CMV in solid organ transplant *** objective of this study was to establish a compre-hensive framework for the management of CMV in patients who have had LT.

关键词： Liver transplantation Cytomegalovirus Antiviral prophylaxis Preemptive treatment Valganciclovir Ganciclovir

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The current status and future development of high-temperature conventional superconductivity

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National Science Review 2024年第7期11卷 18-20页

作者： Mikhail i.Eremets High Pressure Chemistry and Physics Group Max-Planck-Institut für Chemie

This survey highlights key advancements in high-temperature superconductivity in hydrogen-rich materials, emphasizing the robust evidence and reproducibility of superconductivity under challenging experimental conditions of megabar pressures. in the near future, achieving room-temperature superconductivity is highly probable, and the field is expected to transition towards near-ambient-pressure superconductivity.

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Using fracture-based continuum modeling of coupled geomechanical-hydrological processes for numerical simulation of hydraulic fracturing

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第5期16卷 1582-1599页

作者： Goodluck i.Ofoegbu GNO Modeling Research LLC. San AntonioTX78253USA

This paper describes numerical simulation of hydraulic fracturing using fracture-based continuum modeling(FBCM)of coupled geomechanical-hydrological processes to evaluate a technique for high-density fracturing and fracture *** simulations are innovative because of modeling discrete fractures explicitly in continuum analysis.A key advantage of FBCM is that fracture initiation and propagation are modeled explicitly without changing the domain grid(*** re-meshing).Further,multiple realizations of a preexisting fracture distribution can be analyzed using the same domain *** simulated hydraulic fracturing technique consists of pressurizing multiple wells simultaneously:initially without permeating fluids into the rock,to seed fractures uniformly and at high density in the wall rock of the wells;followed by fluid injection to propagate the seeded fracture density *** combines the ease of continuum modeling with the potential accuracy of modeling discrete fractures and fracturing *** are modeled as piecewise planar based on intersections with domain elements;fracture geometry stored as continuum properties is used to calculate parameters needed to model individual fractures;and rock behavior is modeled through tensorial aggregation of the behavior of discrete fractures and unfractured *** are presented for previously unfractured rock and for rock with preexisting fractures of horizontal,shallow-dipping,steeply dipping,or vertical *** of a single-well model are used to determine the pattern and spacing for a multiple-well *** results illustrate high-density fracturing and fracture caging through simultaneous fluid injection in multiple wells:for previously unfractured rock or rock with preexisting shallow-dipping or horizontal fractures,and in situ vertical compressive stress greater than *** preexisting fractures are steeply dipping or vertical,and considering the same in situ

关键词： Discrete fracture Fracture-based continuum modeling Fracture caging High-density fracturing Hydraulic fracturing Preexisting fracture

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