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| 1 | Nature:揭示干细胞惊人异质性显示文摘论文作者George Daley教授说:"这是一项非常基础的研究,但它阐明了多能性状态广泛性。我们捕获了干细胞不同状态的详细分子谱。"研究人员通过采用多种变量如不同的化学物质、培养环境和遗传敲除来扰乱多能干细胞,研究人员探究了它们的发育景观。随后,他们分析了每个细胞的遗传组成,观察了每个细胞多能状态的微小波动。他们发现内部、化学和环境信号影响干细胞方式的许多细微差异,揭示出了复杂的发育调控因子"决策"回路。 | Roshan M.Kumar Patrick Cahan Alex K.Shalek Rahul Satija A.Jay Daley Keyser Hu Li Jin Zhang Keith Pardee David Gennert John J.Trombetta Thomas C.Ferrante Aviv Regev George Q.Daley James J. Collins | 2014 | 岭南现代临床外科2014,14,6: | 10 |
| 2 | AW-6016-T4板材的低温成形行为(英文)显示文摘研究析出强化AW-6016-T4金属板材的低温成形行为。利用拉伸和Nakazima测试方法获得材料在-196至25°C范围内的流变曲线和成形极限曲线。结果表明,材料的强度和伸长率随温度的降低而增大。背散射电子衍射(EBSD)研究表明变形材料在室温和低温下显微组织有细微区别。但连续加热差热分析表明析出动力学之间无明显区别。本研究结果表明低温变形可用于制造8 mm深的B柱,而常温变形只能制造6 mm深的B柱。 | M.KUMAR N.SOTIROV F.GRABNER R.SCHNEIDER G.MOZDZEN | 2017 | Transactions of Nonferrous Metals Society of China2017,27,6: | 3 |
| 3 | Abrasive Wear Characteristics of Carbon and Low Alloy Steels for Better Performance of Farm Implements显示文摘The low stress abrasion behaviours of heat treated mild, medium carbon and high C - low Cr steels, which are generally used in making farm implements, have been investigated. The simple heat treatment greatly improves the hardness, tensile strength and abrasion resistance of medium carbon and high C - low Cr steels. The results indicate that the material removal during abrasion is controlled by a number of factors, such as hardness, chemical composition, microstructure and heat treatment conditions. The conclusion is that the heat treated high C - low Cr steel and mild steel carburized by using coaltar pitch provide the best hardness and abrasion resistance and thus appear to be the most suitable materials for making agricultural tools. | M.Kumar and R. C Gupta(Centre of Advanced Study, Dept. of Metallurgical Engineering, Institute of Technology,Banaras Hindu University, Vaanasi -221 005, India) | 1995 | Journal of Materials Science & Technology1995,11,2: | 2 |
| 4 | Reflection and refraction of attenuated waves at boundary of elastic solid and porous solid saturated with two immiscible viscous fluids显示文摘The propagation of elastic waves is studied in a porous solid saturated with two immiscible viscous fluids.The propagation of three longitudinal waves is represented through three scalar potential functions.The lone transverse wave is presented by a vector potential function.The displacements of particles in different phases of the aggregate are defined in terms of these potential functions.It is shown that there exist three longitudinal waves and one transverse wave.The phenomena of reflection and refraction due to longitudinal and transverse waves at a plane interface between an elastic solid half-space and a porous solid half-space saturated with two immiscible viscous fluids are investigated.For the presence of viscosity in pore-fluids,the waves refracted to the porous medium attenuate in the direction normal to the interface.The ratios of the amplitudes of the reflected and refracted waves to that of the incident wave are calculated as a nonsingular system of linear algebraic equations.These amplitude ratios are used to further calculate the shares of different scattered waves in the energy of the incident wave.The modulus of the amplitude and the energy ratios with the angle of incidence are computed for a particular numerical model.The conservation of the energy across the interface is verified.The effects of variations in non-wet saturation of pores and frequencies on the energy partition are depicted graphically and discussed. | M.KUMAR R.SAINI | 2012 | Applied Mathematics and Mechanics(English Edition)2012,33,6: | 2 |
| 5 | Reflection and refraction of plane waves at the boundary of an elastic solid and double-porosity dual-permeability materials显示文摘Phenomena of reflection and refraction of plane harmonic waves at a plane interface between an elastic solid and doubleporosity dual-permeability material are investigated. The elastic solid behaves non-dissipatively, while double-porosity dual-permeability materials behave dissipatively to wave propagation due to the presence of viscosity in pore fluids. All the waves(i.e., incident and reflected) in an elastic medium are considered as homogeneous(i.e., having the same directions of propagation and attenuation), while all the refracted waves in double-porosity dual-permeability materials are inhomogeneous(i.e., having different directions of propagation and attenuation). The coefficients of reflection and refraction for a given incident wave are obtained as a non-singular system of linear equations. The energy shares of reflected and refracted waves are obtained in the form of an energy matrix. A numerical example is considered to calculate the partition of incident energy among various reflected and refracted waves. The effect of incident direction on the partition of the incident energy is analyzed with a change in wave frequency, wave-induced fluid-flow, pore-fluid viscosity and double-porosity structure.It has been confirmed from numerical interpretation that during the reflection/refraction process, conservation of incident energy is obtained at each angle of incidence. | M.Kumar M.S.Barak M.Kumari | 2019 | Petroleum Science2019,16,2: | 2 |
| 6 | Measurement of the integrated luminosity of the Phase 2 data of the Belle Ⅱ experiment显示文摘From April to July 2018,a data sample at the peak energy of the T(4 S) resonance was collected with the Belle Ⅱ detector at the SuperKEKB electron-positron collider.This is the first data sample of the Belle Ⅱ experiment.Using Bhabha and digamma events,we measure the integrated luminosity of the data sample to be(496.3±0.3±3.0) pb-1,where the first uncertainty is statistical and the second is systematic.This work provides a basis for future luminosity measurements at Belle Ⅱ. | F.Abudinén I.Adachi P.Ahlburg H.Aihara N.Akopov A.Aloisio F.Ameli L.Andricek N.Anh Ky D.M.Asner H.Atmacan T.Aushev V.Aushev T.Aziz K.Azmi V.Babu S.Baehr S.Bahinipati A.M.Bakich P.Bambade Sw.Banerjee S.Bansal V.Bansal M.Barrett J.Baudot A.Beaulieu J.Becker P.K.Behera J.V.Bennett E.Bernieri F.U.Bernlochner M.Bertemes M.Bessner S.Bettarini V.Bhardwaj F.Bianchi T.Bilka S.Bilokin D.Biswas G.Bonvicini A.Bozek M.Bračko P.Branchini N.Braun T.E.Browder A.Budano S.Bussino M.Campajola L.Cao G.Casarosa C.Cecchi D.Červenkov M.-C.Chang P.Chang R.Cheaib V.Chekelian Y.Q.Chen Y.-T.Chen B.G.Cheon K.Chilikin H.-E.Cho K.Cho S.Cho S.-K.Choi S.Choudhury D.Cinabro L.Corona L.M.Cremaldi S.Cunliffe T.Czank F.Dattola E.De La Cruz-Burelo G.De Nardo M.De Nuccio G.De Pietro R.de Sangro M.Destefanis S.Dey A.De Yta-Hernandez F.Di Capua S.Di Carlo J.Dingfelder Z.Doležal I.Domínguez Jiménez T.V.Dong K.Dort S.Dubey S.Duell S.Eidelman M.Eliachevitch T.Ferber D.Ferlewicz G.Finocchiaro S.Fiore A.Fodor F.Forti A.Frey B.G.Fulsom M.Gabriel E.Ganiev M.Garcia-Hernandez R.Garg A.Garmash V.Gaur A.Gaz U.Gebauer A.Gellrich J.Gemmler T.Geßler R.Giordano A.Giri B.Gobbo R.Godang P.Goldenzweig B.Golob P.Gomis P.Grace W.Gradl E.Graziani D.Greenwald C.Hadjivasiliou S.Halder K.Hara T.Hara O.Hartbrich K.Hayasaka H.Hayashii C.Hearty M.T.Hedges I.Heredia de la Cruz M.Hernández Villanueva A.Hershenhorn T.Higuchi E.C.Hill H.Hirata M.Hoek S.Hollitt T.Hotta C.-L.Hsu Y.Hu K.Huang T.Iijima K.Inami G.Inguglia J.Irakkathil Jabbar A.Ishikawa R.Itoh M.Iwasaki Y.Iwasaki S.Iwata P.Jackson W.W.Jacobs D.E.Jaffe E.-J.Jang H.B.Jeon S.Jia Y.Jin C.Joo J.Kahn H.Kakuno A.B.Kaliyar G.Karyan Y.Kato T.Kawasaki H.Kichimi C.Kiesling B.H.Kim C.-H.Kim D.Y.Kim S.-H.Kim Y.K.Kim Y.Kim T.D.Kimmel K.Kinoshita C.Kleinwort B.Knysh P.Kodyš T.Koga I.Komarov T.Konno S.Korpar D.Kotchetkov N.Kovalchuk T.M.G.Kraetzschmar P.Križan R.Kroeger J.F.Krohn P.Krokovny W.Kuehn T.Kuhr M.Kumar R.Kumar K.Kumara S.Kurz A.Kuzmin Y.-J.Kwon S.Lacaprara Y.-T.Lai C.La Licata K.Lalwani L.Lanceri J.S.Lange K.Lautenbach I.-S.Lee S.C.Lee P.Leitl D.Levit P.M.Lewis C.Li L.K.Li S.X.Li Y.M.Li Y.B.Li J.Libby K.Lieret L.Li Gioi J.Lin Z.Liptak Q.Y.Liu D.Liventsev S.Longo A.Loos F.Luetticke T.Luo C.MacQueen Y.Maeda M.Maggiora S.Maity E.Manoni S.Marcello C.Marinas A.Martini M.Masuda K.Matsuoka D.Matvienko J.McNeil J.C.Mei F.Meier M.Merola F.Metzner M.Milesi C.Miller K.Miyabayashi H.Miyata R.Mizuk G.B.Mohanty H.Moon T.Morii H.-G.Moser F.Mueller F.J.Müller Th.Muller R.Mussa K.R.Nakamura E.Nakano M.Nakao H.Nakayama H.Nakazawa M.Nayak G.Nazaryan D.Neverov M.Niiyama N.K.Nisar S.Nishida K.Nishimura M.Nishimura M.H.A.Nouxman B.Oberhof S.Ogawa Y.Onishchuk H.Ono Y.Onuki P.Oskin H.Ozaki P.Pakhlov G.Pakhlova A.Paladino T.Pang E.Paoloni H.Park S.-H.Park B.Paschen A.Passeri S.Patra S.Paul T.K.Pedlar I.Peruzzi R.Peschke R.Pestotnik M.Piccolo L.E.Piilonen P.L.M.Podesta-Lerma V.Popov C.Praz E.Prencipe M.T.Prim M.V.Purohit P.Rados M.Remnev P.K.Resmi I.Ripp-Baudot M.Ritter M.Ritzert G.Rizzo L.B.Rizzuto S.H.Robertson D.Rodríguez Pérez J.M.Roney C.Rosenfeld A.Rostomyan N.Rout G.Russo D.Sahoo Y.Sakai D.A.Sanders S.Sandilya A.Sangal L.Santelj P.Sartori Y.Sato V.Savinov B.Scavino M.Schram H.Schreeck J.Schueler C.Schwanda A.J.Schwartz B.Schwenker R.M.Seddon Y.Seino A.Selce K.Senyo M.E.Sevior C.Sfienti C.P.Shen H.Shibuya J.-G.Shiu A.Sibidanov F.Simon S.Skambraks R.J.Sobie A.Soffer A.Sokolov E.Solovieva S.Spataro B.Spruck M.Starič S.Stefkova Z.S.Stottler R.Stroili J.Strube M.Sumihama T.Sumiyoshi D.J.Summers W.Sutcliffe M.Tabata M.Takizawa U.Tamponi S.Tanaka K.Tanida H.Tanigawa N.Taniguchi Y.Tao P.Taras F.Tenchini E.Torassa K.Trabelsi T.Tsuboyama N.Tsuzuki M.Uchida I.Ueda S.Uehara T.Uglov K.Unger Y.Unno S.Uno P.Urquijo Y.Ushiroda S.E.Vahsen R.van Tonder G.S.Varner K.E.Varvell A.Vinokurova L.Vitale A.Vossen E.Waheed H.M.Wakeling K.Wan W.Wan Abdullah B.Wang M.-Z.Wang X.L.Wang A.Warburton M.Watanabe S.Watanuki J.Webb S.Wehle N.Wermes C.Wessel J.Wiechczynski P.Wieduwilt H.Windel E.Won S.Yamada W.Yan S.B.Yang H.Ye J.Yelton J.H.Yin M.Yonenaga Y.M.Yook C.Z.Yuan Y.Yusa L.Zani J.Z.Zhang Z.Zhang V.Zhilich Q.D.Zhou X.Y.Zhou V.I.Zhukova V.Zhulanov A.Zupanc | 2020 | Chinese Physics C2020,44,2: | 2 |
| 7 | 非时变海洋测深——新概念的定义与概述显示文摘目前,全世界在陆地和海洋上应用了几百个高器基准。我们生活在陆地上,则往往优先考虑陆地基准。而适时修正一些基准的工作已经开始,这基准包括已建立的北美基准(NAD)1983、欧洲基准(ED)1979和EURFF1989以及将要建立的象南美的SIRGAS和韩国的KRF1994。 值得注意的是,在海洋上仍没有定义一个完整的精密水平基准,一般是将陆地基准外推至海洋上来绘制海图。对海图垂直基准而言,各国在顾及航行安全而进行定义时缺乏共识而使之变得复杂化。 另外,将潮汐海面作为垂直基准来确定高程和深度,其值是时变的,并且没有共同的零点。这使得海岸之间和沿岸产生倾斜,并提供不了适用于全球统一的垂直基准。 本文讨论了海图垂直基准问题,并提出用高精度大地水准面作为非时变海洋测深0参考面的新概念,详细论述了如何获得0参考面和在实时导航中如何使用这个基准。为保证0基准面的一致性,避免采用局部或不同的全球大地水准面很有必要。 | M.Kumar 梁开龙 肖付民 | 1996 | 海洋测绘1996,17,4: | 1 |
| 8 | Mycotic keratitis: an overview of diagnosis and therapy显示文摘 | P. K.Shukla M.Kumar G. B. S.Keshava | 2008 | Mycoses2008,,3: | 1 |
| 9 | Bifunctional fluorescent thiacalix[4]arene based chemosensor for Cu~(2+) and F~- ions显示文摘 | V.Bhalla R.Kumar M.Kumar | | 0,,45: | 1 |
| 10 | Mycotic keratitis: an overview of diagnosis and therapy显示文摘 | P. K.Shukla M.Kumar G. B. S.Keshava | 2008 | Mycoses2008,,3: | 1 |
| 11 | Total knee arthroplasty with long tibial stem for tibial stress fractures with knee osteoarthritis:Two birds with one stone显示文摘Purpose:The treatment and outcome of tibial stress fractures concomitant with knee osteoarthritis(OA)are complicated.The aim of this study was to evaluate the functional and radiological outcome of total knee arthroplasty with long tibial stem as a treatment for patients having knee OA and tibial stress fracture.Methods:Patients who were diagnosed to have proximal tibia stress fracture along with knee OA at our institution between June 2013 and November 2018 were included in our study.All patients underwent total knee arthroplasty with long tibial stem.Preoperative and postoperative functional assessments were done according to range of movement of the knee joint,knee society score and knee injury and OA outcome score.Descriptive analysis was carried out by mean and standard deviation for quantitative variables,frequency and proportion for categorical variables.Results:Twelve patients were included in the study.All patients were found to have stress fractures in the proximal half of tibia and extra-arthrosis.Four patients had non-union/delayed union,and 8 patients had acute fractures.The average preoperative range of movement was 88.1°,which improved to 116.3°at 3 months following surgery.It was found that the fracture has healed in all cases.Mean knee society score improved from 32.9 preoperatively to 89.3 at 1 year follow-up.Knee injury and OA outcome score improved from a mean score of 28.3 preoperatively to 81.1 at 1 year follow-up.Conclusion:Stress fractures can occur in the proximal tibia in patients with knee OA.Total knee arthroplasty with tibial stem provides a suitable solution for both conditions.Additional plating or bone graft is unlikely to be required. | Satvik N.Pai Mohan M.Kumar Pravin K.Vanchi Raghav Ravi Pradeesh Kiswanth | 2022 | Chinese Journal of Traumatology2022,25,6: | 1 |
| 12 | Needle‐based blocks for the 21st century ophthalmology显示文摘 | Chandra M.Kumar | 2011 | Acta Ophthalmologica2011,,1: | 1 |
| 13 | Effect of various physical properties on the reflection coefficients of inhomogeneous waves at the stress-free surface of partially saturated soils induced by obliquely incident fast P-wave显示文摘Ghasemzadeh and Abounouri[1]developed a mathematical model of partially saturated soils that is solved using the potential method,which decomposes elastodynamics equations into two standard wave equations,a scalar wave equation for scalar potential and a vector wave equation for vector potential.In such a medium,four waves exist three longitudinal and one shear.Each fluid phase tortuous path is taken into account in this model.The inertial coupling between solid and fluid particles is consid-ered.Furthermore,both open-pore and sealed-pore boundaries are explored to investigate the reflection phenomenon at the surface of partially saturated soils.For both boundaries,the reflection coefficients of inhomogeneous waves at a partially saturated soil surface are found as a non-singular set of linear equations.All waves(both reflected and incident)in partially saturated soils are pronounced as inhomogeneous due to viscosity in pore fluids(i.e.,distinct directions of attenuation and propagation).The energy shares of reflected waves are determined using an energy matrix.A numerical example is used to determine the reflection coefficients and the distribution of incident energy among the various reflected waves.The effect of different physical features on reflection coefficients and incident energy partitioning is illustrated graphically.The conservation of incident energy at the surface of partially saturated soils is mathematically confirmed at all angles of incidence. | M.Kumari M.S.Barak A.Singh M.Kumar | 2022 | Journal of Ocean Engineering and Science2022,7,3: | 0 |
| 14 | 1984世界大地测量系统(WGS84)显示文摘自1960年以来,美国国防制图局(DMA)已建立了四个世界大地测量系统(WGS);WGS60、WGS66、WGS72和WGS84。最新的WGS84与前三者相比,是最为精确的大地参考框架,它是利用了广泛的、最新的大地测量数据全球确定的。WGS84提供了精确的参照框架、地球重力场模型、正常重力公式、大地水准面和包括全部大陆和主要海洋岛屿在内的105个局部(和区域)大地测量基准的转换参数。这些成果使测绘(MC&G)的复杂性明显地简化,并使国防制图局(DMA)的全球性成果在质量扣精度方面普遍得到提高。本文介绍对庞大数据组的研究和费时的计算,这些科研成果是令人感兴趣的,还给出应用WGS84去改善全球性测绘成果的方法和优点。 | M.Kumar 朱慧 | 1994 | 测绘科技通讯1994,17,2: | 0 |
| 15 | 小麦氏腥黑粉病的抗性遗传显示文摘由印度尾孢黑粉菌引起的氏腥黑粉病侵染正在发育的籽粒,使籽粒品质下降。通过在旗叶期人为引起植株流行病条件来进行该病害的抗性筛选,但是该项工作费时、费力。已经进行了艰难的尝试,发现存在离体筛选的可能性。Arya(1999)和Tandon等(2000) | M.Kumar 向平 | 2004 | 国外作物育种2004,23,4: | 0 |
| 16 | Estimation of carbon pools in secondary tropical deciduous forests of Odisha,India显示文摘Secondary tropical forests sequester atmospheric CO 2 at relatively faster rates in vegetation and in soil than old-growth primary forests.Spatial understanding of biomass and carbon stocks in different plant functional types of these forests is important.Structure,diversity,composition,soil features and carbon stocks in six distinct plant functional types,namely:Moist Mixed-Deciduous Forest,Peninsular Sal Forest(PSF),Semi-Evergreen Forest(SEF),Planted Teak Forest,Bamboo Brakes(BB),and Degraded Thorny Shrubby Forest were quantified as secondary tropical deciduous forests of the Chandaka Wildlife Sanctuary,Eastern Ghats of Odisha,India.Seventy-one species≥10 cm Girth at breast height(GBH)were recorded,belonging to 38 families and 65 genera.Above-ground biomass carbon and soil organic carbon ranged from 2.1–72.7 Mg C ha^(−1) and 20.6–67.1 Mg C ha^(−1),respectively,among all plant functional types.Soil organic carbon and important value index were positively correlated with above-ground biomass carbon.Maximum carbon allocation was in SOC pool(51–91%),followed by the above-ground biomass pool(9–52%),indicating SOC is one of the major carbon sinks in secondary dry forests.The results highlight the importance of secondary tropical deciduous forests in biodiversity conservation and ecological importance in reducing greenhouse gases. | Subhashree Pattnayak M.Kumar N.K.Dhal Sudam C.Sahu | 2021 | Journal of Forestry Research2021,32,2: | 0 |
| 17 | 冲击热处理AW-7075-T6板材的成形过程(英文)显示文摘研究AW-7075-T6板材在200~480℃进行冲击热处理的成形行为。采用室温拉伸和深拉拔试验表征冲击热处理后样品的可成形性;采用差示扫描量热法(DSC)分析AW-7075板材冲击热处理前后的相沉积状态。结果表明,从300℃起,随着冲击热处理温度的升高,板材的成形性开始提高;由η′析出物溶解导致的应变硬化以及剩余析出物的粗化有助于板材室温成形性能的提高;沉淀物的再析出和粗化是冲击热处理试样强度提高的主要原因。 | M.KUMAR | 2017 | Transactions of Nonferrous Metals Society of China2017,27,10: | 0 |