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An estimation of stress intensity factor in a clamped SE(T) specimen through numerical simulation and experimental verification:case of FCGR of AISI H11 tool steel

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Acta Metallurgica Sinica(English Letters) 2012年第4期25卷 307-319页

作者： Masood Shah Catherine Mabru Farhad Rezai-Aria Ines Souki Riffat Asim pasha Mechanical Engineering Department University of Engineering and TechnologyTaxilaPakistan Department of Mechanics of Structures and Materials University of Toulouse INSA UPSMines AlbiISA ICA(Institute Cl'ement Ader) DMSM F-31056 ToulouseFrance Research Group of Surfaces MachiningMaterials and ToolingUniversity of Toulouse INSA UPSMines AlbiISAE Campus Jarlard F-81013 Albi cedex 09France

A finite element analysis of stress intensity factors （KI） in clamped SE（T）c specimens （dog bone profile） is presented. A J-integral approach is used to calculate the values of stress intensity factors valid for 0.125≤a/W≤0.625. A detailed comparison is made with the work of other researchers on rectangular specimens. Different boundary conditions are explored to best describe the real conditions in the laboratory. A sensitivity study is also presented to explore the effects of variation in specimen position in the grips of the testing machine. Finally the numerically calculated SIF is used to determine an FCGR curve for AISI Hll tool steel on SE（T）c specimens and compared with C（T） specimen of the same material.

关键词： Fatigue crack propagation Stress intensity factor J-Integral Paris law

Meglumine catalyzed one-pot green synthesis of novel 4,7-dihydr.-1H-pyrazolo[3,4-b]pyridin-6-amines

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Chinese Chemical Letters 2017年第2期28卷 437-441页

作者： Santhosh Govindaraju Sumaiya Tabassum Riyaz-ur-Rahaman Khan Mohamed Afzal pasha Department of Studies in Chemistry Central College Campus Bangalore University Bengaluru 560001 India

Meglumine efficiently catalyzes the one-pot,five-component reaction of hydr.zine,ethyl acetoacetate,aryl aldehydes,substituted phenylacetonitriles and ammonium acetate in ethanol at room temperature to afford novel 4,7-dihydr.-1H-pyrazolo[3,4-b]pyridin-6-amine *** present approach offers several advantages such as shorter reaction durations,low cost,excellent yields,milder reaction conditions,simple workup procedure and is environment *** the synthesized derivatives are characterized by IR,^1H NMR,^13C NMR,HRMS and CHN analysis.

关键词： One-pot five-component reaction Substituted phenylacetonitriles Meglumine Pyrazolopyridin-6-amines Ethanol

Catalyst-free ultrasound assisted novel one pot pseudo five component synthesis of aryl-bis-[1H-pyrazol-5-ol-4-yl]methanes,het(aryl)-bis-[1H-pyrazol-5-ol-4-yl]methanes and their 1-phenyl derivatives in aqueous medium

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Green Synthesis and Catalysis 2022年第2期3卷 190-193页

作者： Sudha S Mohamed Afzal pasha Department of Chemistry and Biochemistry Jyoti Nivas College AutonomousBengaluru 560095India Department of Studies in Chemistry Jnanabharathi CampusBangalore UniversityBengaluru 560056India

An efficient,catalyst-free and eco-friendly ultrasound-assisted novel one-pot pseudo-five-component synthesis of aryl-bis-[1H-pyrazol-5-ol-4yl]methanes,het(aryl)-bis-[1H-pyrazol-5-ol-4yl]methanes and their 1-phenyl derivatives in water is *** products were obtained in excellent yield in shorter duration with high purity,by simple *** synthetic methodology has been optimized and discussed herein.

关键词： Bis pyrozolyl-methanes Ethyl acetoacetate Aromatic/het(aryl)aldehydes Hydr.zine/phenyl hydr.zine One-pot multi-component synthesis Ultrasound

Immune consequences of exercise in hypoxia:A narrative review

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Journal of Sport and Health Science 2024年第3期13卷 297-310,I0002页

作者： Johannes Burtscher Qadar pasha Neha Chanana Gregoire P.Millet Martin Burtscher Barbara Strasser Institute of Sport Sciences University of LausanneLausanne 1015Switzerland Institute of Hypoxia Research New Delhi 110067India Department of Biochemistry Jamia HamdardNew Delhi 110062India Department of Sport Science University of InnsbruckInnsbruck 6020Austria Faculty of Medicine Sigmund Freud Private UniversityVienna 1020Austria Ludwig Boltzmann Institute for Rehabilitation Research Vienna 1100Austria

Immune outcomes are key mediators of many health benefits of exercise and are determined by exercise type,dose(frequency/duration,intensity),and individual ***,reduced availability of ambient oxygen(hypoxia)modulates immune functions depending on the hypoxic dose and the individual capacity to respond to *** combined exercise and hypoxia(e.g.,high-altitude training)sculpts immune responses is not well understood,although such combinations are becoming increasingly ***,in this paper,we summarize the impact on immune responses of exercise and of hypoxia,both independently and together,with a focus on specialized cells in the innate and adaptive immune *** review the regulation of the immune system by tissue oxygen levels and the overlapping and distinct immune responses related to exercise and hypoxia,then we discuss how they may be modulated by nutritional ***,antioxidant,and anti-inflammatory mechanisms underlie many of the adaptations that can lead to improved cellular metabolism,resilience,and overall immune functions by regulating the survival,differentiation,activation,and migration of immune *** review shows that exercise and hypoxia can impair or complement/synergize with each other while regulating immune system *** acclimatization,training,and nutritional strategies can be used to avoid risks and tap into the synergistic potentials of the poorly studied immune consequences of exercising in a hypoxic state.

关键词： Altitude Exercise Hypoxia Immune response Training

Combined measures to control the COVID-19 pandemic in Wuhan, Hubei, China: A narrative review

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Journal of Biosafety and Biosecurity 2020年第2期2卷 51-57页

作者： Muhammad Hasnain Muhammad Fermi pasha Imran Ghani School of Information Technology Malaysia Monash UniversityMalaysia Faculty at School of IT Malaysia Monash UniversityMalaysia Department of Mathematics and Computer Sciences Indiana University of PennsylvaniaIndianaPA 15705USA

Coronavirus disease 2019(COVID-19)is an emerging disease caused by the coronavirus,SARS-CoV-2,which leads to severe respiratory infections in ***-19 was first reported in December 2019 in Wuhan city,a populated area of the Hubei province in *** of now,Wuhan and other cities nearby have become safe places for *** rapid control of the spread of COVID-19 infection was made possible due to several interventions and measures that were undertaken in *** narrative review study was designed to evaluate the emerging literature on the combined measures taken to control the COVID-19 pandemic in Wuhan *** Direct,Springer,Web of Science,and the PubMed data repositories were searched for studies published between December 1,2019,and June 07,*** referred“preferred reporting items for systematic reviews and meta-analyses”(PRISMA)protocol was used to conduct this narrative review.A total of 330 research studies were found as a result of the initial search based on exclusion and inclusion criteria,and 30 articles were chosen on final *** was discovered that the combined measures to control the spread of COVID-19 in Wuhan included cordon sanitaire,social distancing,universal symptom surveys,quarantine strategies,and transport *** on the recommendations presented in this review study,existing policies with regard to combined measures and public health policies can be enforced by other countries to implement a rapid control procedure to control the spread of the COVID-19 pandemic.

关键词： COVID-19 Combined measures Lockdown Public health Review Implications

Comparison of efficiencies and costs of different weed control methods in paddy production in Iran

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International Journal of Agricultural and Biological Engineering 2012年第2期5卷 28-33页

作者： Reza Tabatabaekoloor Hasan Yousefnia pasha Jafar Hashemi Department of Farm Machinery Sari Agricultural Scieneces and Natural Resources UniversitySariIran

Using of efficient and inexpensive method for weed control has an important role in increasing efficiency and reducing costs of *** this study,field experiments were carried out to evaluate the efficiency and costs of several weed control methods in paddy production during summer in Mazandaran,the north province of Iran in *** weed control treatments(T1 to T7)were applied at three stages of rice growth(20 and 35 days after transplanting and grain harvesting time).Weed density,weed dr. weight,labor used and economical comparison were determined in the basis of a complete randomized block design with three *** showed that there were no significant differences among efficiencies of six treatments(except for weedy check method(T6)treatment).The minimum weed density and dr. weight were obtained at herbicide+hand weeding once(T5)and herbicide application once(T7)treatments during all three *** costs of weed control were different among the *** of control method has an important role in reducing *** weeding twice method(T1),because of its high weeding cost,hard work and worker restriction in the required time,is not *** weeding twice method(T2),due to its zero environment pollution,reducing costs of weed control and high benefit/cost,is the best and most appropriate *** of weed damage in weedy check method(T6)varied between 30.5%and 45.3%.

关键词： weed control paddy production economic evaluation mechanical weeding chemical weeding yield

Modeling of Combined Economic and Emission Dispatch Using Improved Sand Cat Optimization Algorithm

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Computers, Materials & Continua 2023年第6期75卷 6145-6160页

作者： Fadwa Alrowais Jaber S.Alzahrani Radwa Marzouk Abdullah Mohamed Gouse pasha Mohammed Department of Computer Sciences College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Industrial Engineering College of Engineering at AlqunfudahUmm Al-Qura UniversityMecca24382Saudi Arabia Research Centre Future University in EgyptNew Cairo11845Egypt Department of Computer and Self Development Preparatory Year DeanshipPrince Sattam bin Abdulaziz UniversityAlKharjSaudi Arabia

Combined Economic and Emission Dispatch(CEED)task forms multi-objective optimization problems to be resolved to minimize emission and fuel *** disadvantage of the conventional method is its incapability to avoid falling in local optimal,particularly when handling nonlinear and complex *** have recently received considerable attention due to their enhanced capacity to prevent local optimal solutions in addr.ssing all the optimization problems as a black ***,this paper focuses on the design of an improved sand cat optimization algorithm based CEED(ISCOA-CEED)*** ISCOA-CEED technique majorly concen-trates on reducing fuel costs and the emission of generation ***,the presented ISCOA-CEED technique transforms the equality constraints of the CEED issue into inequality ***,the improved sand cat optimization algorithm(ISCOA)is derived from the integration of tra-ditional SCOA with the Levy Flight(LF)*** last,the ISCOA-CEED technique is applied to solve a series of 6 and 11 generators in the CEED *** experimental validation of the ISCOA-CEED technique ensured the enhanced performance of the presented ISCOA-CEED technique over other recent approaches.

关键词： Economic and emission dispatch multi-objective optimization metaheuristics fuel cost minimization sand cat optimization

Liver in the limelight in the corona(COVID-19)time

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World Journal of Clinical Cases 2020年第16期8卷 3405-3410页

作者： Harleen Kaur Chela Syed Bilal pasha Omer Basar Ebubekir Daglilar Veysel Tahan Department of Internal Medicine Division of Gastroenterology and HepatologyUniversity of MissouriColumbiaMO 65212United States

The novel coronavirus,severe acute respiratory syndr.me-corona virus-2(SARSCoV-2),is a topic of great interest currently in the medical field due to the significant morbidity and mortality associated with *** is immense curiosity about this virus as knowledge about it is limited from pathogenesis,host related factors and the variable effect it has on different patient *** it has claimed fame due to its ability to compromise the respiratory system,it possess the capability to infect other organs as well including the *** is important for clinicians to recognize that the virus can result in multi-organ dysfunction as *** with gastrointestinal symptoms and involvement of the liver can be subtle and can be *** with preexisting liver disease may be more susceptible as well as those who are immunosuppressed or have other *** review article provides a brief overview of some of the information that is available so far with regards to how the liver is impacted by the coronavirus.

关键词： Coronavirus Liver COVID-19 SARS-CoV-2 Angiotensin converting enzyme 2 enzyme Gastrointestinal

A Fast and Highly Efficient Protocol for Reductive Amination of Aromatic Aldehydes Using NaBH4 and Isoxazole Amines in an Ionic Liquid Medium

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Chinese Journal of Chemistry 2011年第4期29卷 769-772页

作者： Eligeti, Rajanarendar Atthunuri, Siva Rami Reddy Samala, Raju Shaik, Firoz pasha Govardhan Reddy Department of Chemistry Kakatiya University Warangal 506009 Andhra Pradesh India

Reductive amination of aromatic aldehydes using NaBH4 and isoxazole amines is carried out in a Bronsted acidic ionic liquid 1 -methylimidazolium tetrafluoroborate [（HMIm）BF4]. The ionic liquid plays dual roles of solvent as well as catalyst for the efficixcellent yields without any undesired side product formation. The newly synthesized compoundsent transformation of aromatic aldehydes to heterocyclic substituted amines in e （3, 6 and 7） were characterized by IR, 1H NMR and mass spectral techniques.

关键词： ionic liquid green chemistry reductive amination 1-methylimidazolium tetrafluoroborate isoxazole amine