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Journal of Materials science & Technology 2018年第1期34卷 214-218页

作者： Indrajit Charit Rajiv s.mishra Department of Chemical & Materials Engineering University of Idaho Moscow ID 83844 USA Department of Materials science & Engineering University of North Texas Denton TX 76203 USA

An as-cast Al-Zn-Mg-sc alloy was friction stir processed varying tool related parameters, yielding microstructures with different grain sizes （0.68, 1.8 and 5.5 μm）. significant increases in room temperature ductility were obtained in these materials with reasonable enhancement in strength. It is demonstrated that the type of microstructure produced by friction stir processing （FsP） has a significant influence on the choice of post-FsP heat treatment design for achieving improved tensile properties. It is also found that the ultrafine grained FsP material could not achieve the desired high strength during the post-FsP heat treatment without grain coarsening, whereas the micro-grained FsP materials could reach such strength levels （〉560 MPa） under conventional age hardening heat treatment conditions.

关键词： Friction stir processing Microstructure Tensile properties Heat treatment

Elimination of extraordinarily high cracking susceptibility of aluminum alloy fabricated by laser powder bed fusion

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Journal of Materials science & Technology 2022年第8期103卷 50-58页

作者： Holden Hyer Le Zhou sharon Park Thinh Huynh Abhishek Mehta saket Thapliyal Rajiv s.mishra Yongho sohn Department of Materials science and Engineering University of Central FloridaOrlandoFLUSA Center for Friction stir Processing Department of Materials Science and EngineeringAdvanced Materials and Manufacturing Processes InstituteUniversity of North TexasDentonTXUSA Now Research scientist Oak Ridge National LaboratoryOak RidgeTNUSA Now Assistant Professor Marquette UniversityMilwaukeeWIUSA Now PhD Candidate Johns Hopkins UniversityBaltimoreMDUSA

Using the calculation of phase diagrams approach and scheil solidification modeling,the Al-2.5Mg-1.0Ni-0.4sc-0.1Zr alloy was designed,intentionally with an extraordinarily high cracking susceptibility,making it prime for solidification cracking during laser powder bed *** study demonstrates the ability to mitigate even the most extreme solidification cracking tendencies in aluminum alloys with only minor alloying additions of sc and Zr,0.5 wt.%***,by employing a simple direct ageing heat treatment,good tensile mechanical properties were observed with a yield strength of 308 MPa,an ultimate tensile strength of 390 MPa,and a total elongation of 11%.

关键词： Additive manufacturing Cracking susceptibility Aluminum alloy CALPHAD Mechanical properties

Double-sided friction stir welding of Nitronic-40 stainless steel for application in tokamak devices

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Journal of Materials science & Technology 2023年第28期159卷 170-183页

作者： supreeth Gaddam Ravi sankar Haridas Deepthi Tammana Charlie sanabria Christopher J.Lammi Diana Berman Rajiv s.mishra Center for Friction stir Processing Department of Materials Science and EngineeringUniversity of North TexasDentonTX76207USA Advanced Materials and Manufacturing Processes Institute University of North TexasDentonTX76207USA Department of Mechanical Engineering University of North TexasDentonTX76207USA Commonwealth Fusion systems CambridgeMAUSA

Nitrogen containing austenitic stainless steels(N-Ass)are widely utilized to fabricate various structural components in tokamak type fusion reactors owing to their suitable mechanical and functional *** components are exposed to a range of temperatures(4-500 K)and interact closely with the magnetic fields that are used to control and contain the plasma within the tokamak ***-40(N40)or XM-11 stainless steel is one such N-Ass used for fabricating structural components in the mag-netic and vacuum vessel systems in tokamak *** of most of the larger components in the magnetic and vacuum vessel systems typically involves some type of fusion-based welding *** study presents a double-sided friction stir welding(FsW)approach as an alternative to fusion welding processes to join 12 mm thick N40 plates to obtain joints with a low fraction ofδferrite(a detrimen-tal ferromagnetic phase),high joint efficiency,no sensitization and loss of hardness in the heat affected zone,and minimal nitrogen desorption from the weld *** double-sided FsW approach yielded superior weldments when compared to similar joints accomplished by fusion welding for application in tokamak devices.

关键词： Friction stir welding Nitronic-40 stainless steel XM-11 stainless steel Magnetic and vacuum vessel systems Tokamak devices

ENVIRONMENTAL IssUEs IN THE AGRO BAsED INDIAN PULP & PAPER INDUsTRY

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天津科技大学学报 2004年第A2期19卷 166-171页

作者： s. Panwar N.Endlay s.mishra R.M.Mathur A.G.Kulkarni scientistsCentral Pulp & Paper Research Institutesaharanpur -247001 (U.P.) India ScientistsCentral Pulp & Paper Research InstituteSaharanpur -247001 (U.P.) IndiaScientistsCentral Pulp & Paper Research InstituteSaharanpur -247001 (U.P.) IndiaScientistsCentral Pulp & Paper Research InstituteSaharanpur -247001 (U.P.) IndiaScientistsCentral Pulp & Paper Research InstituteSaharanpur -247001 (U.P.) India

INTRODUCTIONThe Indian Pulp & Paper Industry is more than a century old industry . The first paper mill was established in the year 1832 and today the number has grown to more than 400 in the organised sector which are located through out the country . In addition there are another 500 pulp & paper mills in the unorganized sector. The Indian pulp & paper industry can be categorised into large, medium and small depending on the scale of operation as indicated in Table -IMost of the large mills established initially were based on woody raw materials.

关键词：印度制浆业造纸业原材料生产技术环境保护污染治理

ENVIRONMENTAL IssUEs IN THE AGRO BAsED INDIAN PULP & PAPER INDUsTRY

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天津科技大学学报 2004年第S2期 168-173页

作者： s. Panwar,N.Endlay,s.mishra,R.M.Mathur,A.G.Kulkarni scientistsCentral Pulp & Paper Research Institutesaharanpur -247001 (U.P.) India scientistsCentral Pulp & Paper Research Institutesaharanpur -247001 (U.P.) India scientistsCentral Pulp & Paper Research Institutesaharanpur -247001 (U.P.) India scientistsCentral Pulp & Paper Research Institutesaharanpur -247001 (U.P.) India scientistsCentral Pulp & Paper Research Institutesaharanpur -247001 (U.P.) India

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在不确定性下进行油藏预测的一种新方法

国外石油动态 2002年第13期 9-19页

作者： s.mishra 谢力

本文描述了一种创新的方法，即根据有限数量的模拟研究油藏动态的不确定性统计估计。该方法包括，在代理动态测量的基础上对全套地质统计模型进行排序和加权，然后从一些选择的实现中用模拟结果的加权平均值估计想得到的动态测量的平均... 详细信息

本文描述了一种创新的方法，即根据有限数量的模拟研究油藏动态的不确定性统计估计。该方法包括，在代理动态测量的基础上对全套地质统计模型进行排序和加权，然后从一些选择的实现中用模拟结果的加权平均值估计想得到的动态测量的平均值／方差，用建立在流线型飞行时间基础上的体积波及效率进行代理动态测量，它们的权重根据矩匹配算法确定。

关键词：不确定性油藏预测地质统计模型加权方法

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罩式退火炉的控制系统

武钢技术 1998年第8期36卷 44-46页

作者： s.mishra 崔有明

茹尔克拉钢厂罩式退火炉由于应用了符合现代工艺规范的仪表和分布式控制系统，而大大提高了产品的质量和产量，并使能耗显著降低。

关键词：退火退火炉罩式控制系统节能

Machine learning-enhanced Monte Carlo and subset simulations for advanced risk assessment in transportation infrastructure

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Journal of Mountain science 2024年第2期21卷 690-717页

作者： Furquan AHMAD Pijush sAMUI s.s.mishra Department of Civil Engineering National Institute of TechnologyPatna 800006India

The maintenance of safety and dependability in rail and road embankments is of utmost importance in order to facilitate the smooth operation of transportation *** study introduces a comprehensive methodology for soil slope stability evaluation,employing Monte Carlo simulation(MCs)and subset simulation(ss)with the"UPss 3.0 Add-in"in *** on an 11.693-meter embankment with a soil slope(inclination ratio of 2H:1V),the investigation considers earthquake coefficients(kh)and pore water pressure ratios(ru)following Indian zoning *** chance of slope failure showed a considerable increase as the Coefficient of Variation(COV),seismic coefficients(kh),and pore water pressure ratios(ru)experienced an *** ss approach showed exceptional efficacy in calculating odds of failure that are notably *** computational modeling,the study optimized the worst-case scenario using ANFIs-GA,ANFIs-GWO,ANFIs-PsO,and ANFIs-BBO *** ANFIs-PsO model exhibits exceptional accuracy(training R2=0.9011,RMsE=0.0549;testing R2=0.8968,RMsE=0.0615),emerging as the most *** study highlights the significance of conducting thorough risk assessments and offers practical insights into evaluating and improving the stability of soil slopes in transportation *** findings contribute to the enhancement of safety and reliability in real-world situations.

关键词： Monte Carlo simulation subset simulation Machine Learning seismic coefficient

聚酰胺地毯废料在聚合物复合材料开发中的应用:压缩行为研究

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国际纺织导报 2022年第11期50卷 15-16页

作者： B.Jaiswal s.mishra R.K.Verma 吴风帆(译) 孟粉叶(校) Madan Mohan Malaviya理工大学印度不详

重点介绍了由聚酰胺(PA)地毯废料制成的聚合物复合材料的压缩行为。该复合材料是使用改进的真空辅助树脂传递模塑(VARTM)方法开发的。所制备的PA地毯废料复合材料样品的测试结果表明,该样品可承受约2 900 N的压缩载荷,证实了其在结构应... 详细信息

重点介绍了由聚酰胺(PA)地毯废料制成的聚合物复合材料的压缩行为。该复合材料是使用改进的真空辅助树脂传递模塑(VARTM)方法开发的。所制备的PA地毯废料复合材料样品的测试结果表明,该样品可承受约2 900 N的压缩载荷,证实了其在结构应用中的可行性和应用潜力。这项工作旨在最大限度地降低由传统的地毯废物处理法,如填埋、焚烧、分解等造成的环境危害。

关键词：聚酰胺地毯废料聚合物复合材料压缩行为

Embryonic thermal manipulation:a potential strategy to mitigate heat stress in broiler chickens for sustainable poultry production

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Journal of Animal science and Biotechnology 2024年第4期15卷 1347-1375页

作者： sadid Al Amaz Birendra mishra Department of Human Nutrition Food and Animal SciencesCollege of Tropical Agriculture and Human ResourcesUniversity of Hawaii at ManoaAgSci 2161955 East‑West RdHonoluluHI 96822USA

Due to high environmental temperatures and climate change, heat stress is a severe concern for poultry health and production, increasing the propensity for food insecurity. With climate change causing higher temperatures and erratic weather patterns in recent years, poultry are increasingly vulnerable to this environmental stressor. To mitigate heat stress, nutritional, genetic, and managerial strategies have been implemented with some success. However, these strategies did not adequately and sustainably reduce the heat stress. Therefore, it is crucial to take proactive measures to mitigate the effects of heat stress on poultry, ensuring optimal production and promoting poultry well-being. Embryonic thermal manipulation(TM) involves manipulating the embryonic environment's temperature to enhance broilers' thermotolerance and growth performance. One of the most significant benefits of this approach is its cost-effectiveness and saving time associated with traditional management practices. Given its numerous advantages, embryonic TM is a promising strategy for enhancing broiler production and profitability in the poultry industry. TM increases the standard incubation temperature in the mid or late embryonic stage to induce epigenetic thermal adaption and embryonic metabolism. Therefore, this review aims to summarize the available literature and scientific evidence of the beneficial effect of pre-hatch thermal manipulation on broiler health and performance.

关键词： Broiler Embryo Epigenetics Global warming Thermoregulation