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Anisotropic transport in a possible quasi-one-dimensional topological candidate:TaNi_(2)Te_(3)

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Tungsten 2023年第3期5卷 325-331页

作者： Yi Liu Chun-Qiang Xu Wen-He Jiao Ping-Gen Cai Bin Li Wei Zhou Bin Qian Xue-Fan Jiang kalaivaman R Raman sankar Xiang-Lin ke Guang-Han Cao Xiao-Feng Xu Department of Applied Physics Zhejiang University of TechnologyHangzhou 310023China Department of Physics and Astronomy Michigan State UniversityEast LansingMI 48824-2320USA School of Physics and key Laboratory of MEMS of the Ministry of Education Southeast UniversityNanjing 211189China Department of Physics Zhejiang University of Science and TechnologyHangzhou 310023China New Energy Technology Engineering Laboratory of Jiangsu Province and School of Science Nanjing University of Posts and TelecommunicationsNanjing 210023China Department of Physics Changshu Institute of TechnologyChangshu 215500China Institute of Physics Academia SinicaTaipei 11529China Department of Physics Zhejiang UniversityHangzhou 310027China

We report on the solid-state synthesis and the strongly anisotropic transport properties of the ternary telluride TaNi_(2)Te_(3),whose three orthogonal resistivity coefficients exhibit a large ratio of 1.4:1:2294(14:1:2303) at 300 k(2 k),thereby demonstrating its quasi-one-dimensional(q1D) electronic *** kohler’ s rule in different current/field configurations shows a moderate *** one dimensionality manifests itself in the needle-like shape of crystal,the large anisotropic resistivity and the flat Fermi surface normal to the chain ***,the first-principles calculations also provide evidence for the existence of the nontrivial topological carriers in this q1D *** calculation demonstrates that TaNi_(2)Te_(3) is a strong topological nontrivial material with topological indices(1;1 0 1) and its nontrivial topology is also evidenced from its bulk-surface *** study may therefore offer a new platform for engineering the topologically nontrivial phase in low-dimensional materials,in analogy to the recently discovered q1D topological TaNiTe_(5).

关键词： Topological materials-Quasi-one-dimensionality Telluride

Optimization of Welding Parameters for Friction Stir Lap Welding of AA6061-T6 Alloy

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Modern Mechanical Engineering 2018年第1期8卷 31-41页

作者： Rathinasuriyan Chandran sankar Ramaiyan Avin Ganapathi Shanbhag Senthil kumar Velukkudi Santhanam Department of Mechanical Engineering Anna University Chennai India

Friction Stir Welding (FSW) is currently used in many aircraft and aerospace sheet metal structures involving lap joints and there has been growing interest in recent years in utilizing this process for joining aluminum alloys. In this paper, Friction Stir Lap Welding (FSLW) of the 6061-T6 aluminum alloy was carried out to obtain the optimum welding condition for maximum shear strength where the rotational speed, axial load, and welding speed were taken as process parameters. An L-9 orthogonal array, a Taguchi Method with consideration of three levels and three factors was designed and executed for conducting trials. Analysis of variance (ANOVA) and Signal to Noise (S/N) ratio were employed to investigate the influence of different welding parameters on the shear strength and obtain the optimum parameters. The Fisher-Test was also implemented to find the design parameter which had the most important effect on the characteristic of quality. The results indicated that the tool rotational speed had the maximum percentage contribution (51%) on the response (shear strength) followed by the welding speed (38%) and the axial load (8%) while the percentage of error was 3%. However, to confirm the main effects for the means and S/N ratios of the experiment, theoretical shear strength values were computed to predict the tensile strength. The maximum shear strength of 60 MPa was achieved and the effectiveness of the method was confirmed. The optimum parameter combinations that provided higher shear strength were: rotational speed of 1200 rpm, welding speed of 45 mm/min and the axial load of 11.5 kN.

关键词： Friction Stir Welding Lap Joint AA6061 Alloy and Optimization

Relationships between the Global General Circulation and the Indian Summer Monsoon

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Advances in Atmospheric Sciences 1991年第2期8卷 137-148页

作者： M. sankar-Rao V. N. Lvkossov E. M. Volodin A. E. Nikitin A. I. Degtiarev kusuma G. Rao Department of Aerospace Engineering and Centre for Atmospheric Sciences Indian Institute of Science Bangalore 560012 INDIADepartment of Numerical Mathematics USSR Academy of Sciences Moscow USSRDepartment of Numerical Mathematics USSR Academy of Sciences Moscow USSRHydrometeorological Centre Moscow USSRHydrometeorological Centre Moscow USSRCentre for Atmospheric Sciences Indian Institute of Science Bangalore 560012 INDIA

The relationships between the global general circulation and the Indian monsoon during active and break phases are investigated with the help of FGGE IIIb *** was found that the ultralong wave component positive and negative height anomalies over Tibet are associated with active and break monsoon phases respectively. This ultralong wave component has significant effect even upto 22°N over the Indian region which is the monsoon trough region. During a monsoon break, the general circulation was found to be more turbulent in the sense that more waves become *** was observed that during a break, blocking prevails over the Siberian region and cold air advection takes place toward Indian region from Siberian region depressing the temperatures over the Indian region by about 1℃. During the break, the Indian region gets connected with higher latitudes by the south winds blowing from polar Soviet regions to the Indian region. From active to break phase the zonal component weakens by about 25% from Indian ocean area right upto Alaskan region, along the east coast of Asia.

关键词： over In Mean

Recent advances in exploring the properties and applications of hyaluronan

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Journal of Dermatologic Science and Cosmetic Technology

Journal of Dermatologic Science and Cosmetic Technology 2024年第3期1卷 59-71页

作者： Qingkai Zeng Dahai Ding Ravi sankar Loka Shuaishuai Wang Peixue Ling National Glycoengineering Research Center Shandong UniversityQingdao 266237China Shandong Academy of Pharmaceutical Sciences Jinan 250101China Complex Carbohydrate Research Center University of GeorgiaAthensGA 30602USA

Hyaluronan(HA)is a naturally occurring polysaccharide in the *** one of the main components of the extracellular matrix,it plays an important role in regulating various cellular processes,including proliferation,differentiation,inflammation,and immunity,through interaction with HA *** is widely found in the human body,particularly in the skin and joints,thus playing a crucial role in the functioning of these *** aging of the skin and the occurrence of osteoarthritis are related to the loss of *** HA in the appropriate areas can delay or prevent these *** methods of HA supplementation include topical application to the skin or injection into the joint cavities,both of which have shown efficacy in restoring HA levels and improving tissue *** recent years,studies have shown that oral administration of HA can also have similar *** HA first passes through the gastrointestinal tract and then enters the liver with the blood ***,in addition to supplementing the HA content in the body,oral HA can also exert beneficial effects on the gastrointestinal tract and the liver,such as enhancing the barrier function of the gastrointestinal tract,regulating the intestinal flora,and reducing *** of HA has numerous benefits for the skin,orthopedic disorders,gastrointestinal tract and ***,it is important to understand the mechanisms through which HA exerts these *** article describes the basic properties of HA and reviews its relationship with skin,orthopedic diseases,gastrointestinal tract and liver,as well as its applications in these areas.

关键词： Hyaluronan Skin Osteoarthritis Osteoporosis Gastrointestinal tract Liver

Absorbable magnesium-based stent: physiological factors to consider for in vitro degradation assessments

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Regenerative Biomaterials 2015年第1期2卷 59-69页

作者： JuanWang Christopher E.Smith Jagannathan sankar Yeoheung Yun Nan Huang key Laboratory of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China National Science Foundation Engineering Research Center for Revolutionizing Metallic Biomaterials North Carolina A&T State UniversityGreensboroNC 27411USA

Absorbable metals have been widely tested in various in vitro settings using cells to evaluate their possible suitability as an implant ***,there exists a gap between in vivo and in vitro test results for absorbable materials.A lot of traditional in vitro assessments for permanent materials are no longer applicable to absorbable metallic implants.A key step is to identify and test the relevant microenvironment and parameters in test systems,which should be adapted according to the specific *** test methods are necessary to reduce the difference between in vivo and in vitro test results and provide more accurate information to better understand absorbable metallic *** this investigative review,we strive to summarize the latest test methods for characterizing absorbable magnesium-based stent for bioabsorption/biodegradation behavior in the mimicking vascular ***,this article comprehensively discusses the direction of test standardization for absorbable stents to paint a more accurate picture of the in vivo condition around implants to determine the most important parameters and their dynamic interactions.

关键词： magnesium absorbable stent in vitro in vivo biodegradation

Action of homoeopathic medicines during the interim period of respite produced by artificial morbific agents - a substantialistic approach

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History & Philosophy of Medicine 2024年第3期6卷 6-8页

作者： Sibin Ramabadhran Anandavally Janani sankar Lalithambika kesavakumar Jayasudha Sruthi krishna Department of Organon of Medicine Sarada Krishna Homoeopathic Medical CollegeTamil Nadu Dr.M.G.R.Medical UniversityChennai 629161India Department of Repertory Sarada Krishna Homoeopathic Medical CollegeTamil Nadu Dr.M.G.R.Medical UniversityChennai 629161India.

Background Various authors have explained ***’s concept of vital force and its ***,the explanation of *** Close,in his book Genius of Homoeopathy,remains in a scientific *** introduction of homeopathy involves philosophical and ethical foundations,with *** Close’s work offering a scientific perspective on vital forces and their role in health and *** statement,“All force is persistent and indestructible”,is the scientific statement of the Doctrine of Immortality[1].He provided the linear concept of power,force,and motion,representing the physical concepts of our dynamic,vital *** to him,power corresponds to a life principle(vital principle),force corresponds to vital force,and motion corresponds to the healthy state of man in the dynamic plane[1].When the life principle is deranged,the vital force becomes improper,leading to *** has gone through different periods when it comes to physical well-being to lead a disease-free *** were the times when the human race was expected to endure physical stress due to disease and quick relief is expected nowadays at all levels with the development of innovative and modern *** transient alleviation of symptoms is temporary,and the patient would somehow return with the suffering *** article emphasizes a new ideology of administering homeopathic medicines during the symptom-free period where the dynamic,vital principle is at rest and the action of which is substituted by yet another artificial morbific agent in materialistic doses,which remains an unavoidable situation that all homeopaths face.

关键词： artificial return Action

Fuel Cell Technology for Propulsion and Power Generation of Ships： Feasibility Study on Ocean Research Vessel Sagarnidhi

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Journal of Shipping and Ocean Engineering 2015年第5期5卷 219-228页

作者： Rajasekhar D Deepak.sankar P. S Ananthakrishna Narendrakumar D. Vessel Management Cell National Institute of Ocean Technology Chennai India

Rising fuel prices, increasing emission levels and impending environmental regulations made shipping industry to find an alternate for internal combustion engine in 21st century. Fuel cell is a sustainable, emerging technology with negligible pollution. More significantly for a research ship, emission levels need to be substantially low to have quality measurements. A feasibility study is carried-out First time in the world, to drive an ice class multi-disciplinary ORV （Oceanography Research Vessel） Sagarnidbi, using hydrogen powered fuel cell. Sagamidhi is equipped with special equipments viz., Deep Sea winch, specially designed cranes for Launching and retrieval of ROV （Remotely Operable Vehicle）, DSMC （Deep Sea Mining Crawler）, Tsunami systems, manned/unmanned submersible and ACS （Autonomous Coring System） and other facilities that support research in Indian, International and Antarctic waters. Beside this, the propulsion system along with DP （Dynamic Positioning）, centralized air conditioning and special equipments require enormous electrical power. The combustion of diesel oil in an engine, that coupled with an alternator generates electrical power required, along with NOx （Nitrous Oxides）, SOx （Sulphur Oxides） and PM （Particulate Matter） emissions. Shipping industry is the fourth largest contributor to air pollution and carbon emissions, particularly in coastal areas, and the growth rate makes the problem even more critical. Stringent international air pollution regulation and increasing fuel price paves the way for an alternative ＂green emission technology＂. Various fuel cells were analyzed with different combination of fuel, electrolyte and electrodes. From the analysis, it has been found that SOFC （Solid Oxide Fuel Cell） is most suitable for the present scenario. A fuel cell designed with hydrogen as fuel, zirconium oxides stabilized with yttrium oxide as electrolyte and zirconium electrodes is used for 1.5 MW power output and 0.5 MW through regenerator. Vo

关键词： Hydrogen air pollution SOx fuel cell regenerator particulate matter.

Mechanical suppression of breast cancer cell invasion and paracrine signaling to osteoclasts requires nucleo-cytoskeletal connectivity

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Bone Research 2020年第4期8卷 393-405页

作者： Xin Yi Laura E.Wright Gabriel M.Pagnotti Gunes Uzer katherine M.Powell Joseph M.Wallace Uma sankar Clinton T.Rubin khalid Mohammad Theresa A.Guise William R.Thompson Department of Physical Therapy School of Health and Rehabilitation SciencesIndiana UniversityIndianapolisIN 46202USA Department of Medicine Division of EndocrinologySchool of MedicineIndiana UniversityIndianapolisIN 46202USA Department of Mechanical and Biomedical Engineering Boise State UniversityBoiseID 83725USA Department of Biomedical Engineering Purdue School of Engineering and TechnologyPurdue UniversityIndianapolisIN 46202USA Department of Anatomy&Cell Biology Indiana UniversityIndianapolisIN 46202USA Department of Biomedical Engineering Stony Brook UniversityStony BrookNY 11794USA

Exercise benefits the musculoskeletal system and reduces the effects of *** effects of exercise are multifactorial,where metabolic changes and tissue adaptation influence *** signals,a principal component of exercise,are anabolic to the musculoskeletal system and restrict cancer *** examined the mechanisms through which cancer cells sense and respond to low-magnitude mechanical signals introduced in the form of ***-magnitude,high-frequency vibration was applied to human breast cancer cells in the form of low-intensity vibration(LIV).LIV decreased matrix invasion and impaired secretion of osteolytic factors PTHLH,IL-11,and ***,paracrine signals from mechanically stimulated cancer cells,reduced osteoclast differentiation and resorptive *** the nucleus by knockdown of SUN1 and SUN2 impaired LIV-mediated suppression of invasion and osteolytic factor *** increased cell stiffness;an effect dependent on the LINC *** data show that mechanical vibration reduces the metastatic potential of human breast cancer cells,where the nucleus serves as a mechanosensory apparatus to alter cell structure and intercellular signaling.

关键词： invasion impaired skeletal

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功能梯度类金刚石薄膜的脉冲激光制备

金属热处理学报 2000年第2期21卷 57-63页

作者：魏秋明 J.sankar J.Narayan NSF Center for Advanced Materials and Smart Structures Department of Materials Science and Engineering

长期以来 ,高质量的纯类金刚石薄膜的成功制备一直受其巨大内部压应力的阻碍 ,因为这种压应力导致严重的附着问题。厚度大于 50 0nm的类金刚石薄膜中的压应力常使薄膜与基体剥离。作者采用功能梯度的设计概念 ,应用准分子脉冲激光沉积方... 详细信息

长期以来 ,高质量的纯类金刚石薄膜的成功制备一直受其巨大内部压应力的阻碍 ,因为这种压应力导致严重的附着问题。厚度大于 50 0nm的类金刚石薄膜中的压应力常使薄膜与基体剥离。作者采用功能梯度的设计概念 ,应用准分子脉冲激光沉积方法 ,成功制备了厚度超过 1 0 μm的高质量类金刚石薄膜。薄膜中的SP3碳原子含量超过 6 0 %。纳米硬度测试表明 ,薄膜的弹性模量高达 50 0GPa ,纳米硬度高达 6 0GPa ,薄膜与基体间附着良好。证明功能梯度的设计概念可以用于制备较厚的超硬类金刚石薄膜。

关键词：类金刚石薄膜功能梯度设计准分子脉冲激光沉积