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Investig.tion into a practical approach and application of cotton fiber elong.tion

Journal of Cotton Research 2023年第1期6卷 13-24页

作者： DELHOM Christopher D. WANJURA John D. pelletier mathew g. HOLT g.eg.ry A. HEQUET Eric F. USDA-ARS New OrleansLA 70124USA USDA-ARS LubbockTX 79403USA Texas Tech University LubbockTX 79409USA

Backg.ound The streng.h of cotton fiber has been extensively studied and sig.ificantly improved throug. selec-tive breeding.but fiber elong.tion has larg.ly been ig.ored,even thoug. elong.tion contributes to determining.the energ. needed to break fibers.Recent developments to calibrate the hig. volume instrument(HVI)for elong.tion has renewed interest in elong.tion.However,it is not understood how best to utilize yet another fiber property which has the potential to add to the complexity of fiber selection.To explore a practical approach to applying.elong.tion,cot-ton samples were tested using.sing.e fiber methods,the Stelometer,and the HVI.Comparison of streng.h,elong.tion,and combined properties such as modulus were explored.Results HVI testing.was shown to be sensitive enoug. to characterize elong.tion differences but unlike sing.e fiber testing.it was unable to capture within-sample variation.Fiber bundle testing.like Stelometer and HVI was shown to reduce bias due to fiber selection.Conclusion The use of secant modulus,an intrinsic material property,allowed for one value to represent both streng.h and elong.tion.Secant modulus was shown to contain more useful information than either elong.tion or work-to-break.Work-to-break was shown to be more influenced by a specific value of breaking.force or elong.tion rather than the intrinsic behavior of the sample being.tested.Exploring.the influence of g.netics and environment on elong.tion,and its interaction with other fiber properties,requires additional work.Secant modulus,by combining.streng.h and elong.tion into one value,shows the potential to incorporate elong.tion values into fiber characteriza-tion without increasing.the complexity of current fiber selection processes.

关键词： Cotton Elong.tion Tenacity Work-to-break ModulusBackg.ound

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Irrig.tion's effect and applied selection on the fiber quality of Ethyl MethaneSulfonate(EMS)treated upland cotton(g.ssypium hirsutum L.)

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Journal of Cotton Research 2018年第4期1卷 1-11页

作者： WITT Travis W ULLOA Mauricio pelletier mathew g. MENDU Venug.pal RITCHIE g.en L. Plant and Soil Science Department Texas Tech University USDA-ARS PA CSRL Plant Stress and Germplasm Development Research USDA-ARS Cotton Production and Processing.Research Laboratory

Backg.ound: Producing.rainfed cotton(g.ssypium hirsutum L.) with hig. fiber quality has been challeng.ng.in the Texas Hig. Plains because of extended periods of insufficient rainfall during.sensitive boll developmental stag.s.g.netic variation created by Ethyl MethaneSulfonate(EMS) mutag.n has successfully improved fiber quality of cotton. However, little is known about the effect of water deficit environments on fiber quality. Three EMS treated populations were advanced from the first to the fourth g.neration(M1 to M4) as bulk harvested populations. In2014, sing.e-plant diverg.nt selection was applied based on perceived morpholog.cal and ag.onomic differences seen during.and at the end of the season.Results: Analyses from these selections in 2014-2016 showed sig.ificant(Pg.h, streng.h, uniformity, and elong.tion) when compared with the orig.nal non-treated EMS source; some selections were found to have excellent fiber quality under diverse irrig.tionreg.mes.Conclusions: Some of these selections are being.considered for g.rmplasm release and could be useful for improving.the fiber quality of cotton under water limited conditions, thereby helping.to ensure the long.term survival of the cotton industry on the Texas Hig. Plains.

关键词： Breeding Droug.t EMS Ethyl MethaneSulfonate Fiber quality Selection

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Pd_(20)Pt_(20)Cu_(20)Ni_(20)P_(20)高熵金属玻璃的热稳定性和热塑成形性

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稀有金属材料与工程 2024年第1期53卷 1-7页

作者： Cardinal Sandrine pelletier Jean-Marc Kato Hidemi 里昂大学里昂国立应用科学学院法国里昂F-69621 东北大学金属材料研究所日本仙台980-8577

采用差示扫描量热法、X射线衍射和热力学分析研究了Pd_(20)Pt_(20)Cu_(20)Ni_(20)P_(20)高熵金属玻璃(HEMg.的热稳定性和热力学性能。结果表明,与其他经典贵金属基金属玻璃相比,Pd_(20)Pt_(20)Cu_(20)Ni_(20)P_(20)HEMg.有相当的性能... 详细信息

采用差示扫描量热法、X射线衍射和热力学分析研究了Pd_(20)Pt_(20)Cu_(20)Ni_(20)P_(20)高熵金属玻璃(HEMg.的热稳定性和热力学性能。结果表明,与其他经典贵金属基金属玻璃相比,Pd_(20)Pt_(20)Cu_(20)Ni_(20)P_(20)HEMg.有相当的性能和鲜明的特点。

关键词：高熵合金金属玻璃热塑性成形结晶

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Hf元素添加对CuZr基非晶合金动态弛豫的影响

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力学学报 2024年

作者：朱凡邢光辉 Jean-Marc pelletier 乔吉超西北工业大学力学与土木建筑学院东莞市三航军民融合创新研究院 INSA-Lyon MATEISUMR5510F-69621Villeurbanne

考虑到非晶合金具有独特的无序微观结构，其表现出极为复杂的弛豫动力学特性.动态弛豫行为在非晶合金中普遍存在，深刻理解其机制对于解构非晶合金固有的非均匀微观结构至关重要.少量元素的添加是调控非晶合金微观结构有效手段之一.本... 详细信息

考虑到非晶合金具有独特的无序微观结构，其表现出极为复杂的弛豫动力学特性.动态弛豫行为在非晶合金中普遍存在，深刻理解其机制对于解构非晶合金固有的非均匀微观结构至关重要.少量元素的添加是调控非晶合金微观结构有效手段之一.本研究以玻璃形成能力良好的Cu46Zr47-x Hfx Al7 (x=0, 8)非晶合金为模型合金，运用动态力学分析方法研究复模量随频率和温度的变化，进而探究Hf元素取代Zr元素对动态弛豫的影响.在动态力学频率谱中，借助准点缺陷理论阐明非晶合金在玻璃转变温度Tg.下处于等构型状态，准点缺陷浓度保持恒定；而在Tg.上，准点缺陷浓度随温度的上升呈线性增加. Hf元素的添加会降低玻璃体系等构型状态下的准点缺陷浓度，并抑制原子迁移能力.通过获取连续和离散的弛豫时间分布，直观展示了非晶合金的动力学非均匀性特征.在动态力学温度谱中，Hf元素的引入增加了玻璃体系的混合焓，抑制了β弛豫强度.进一步从内耗角度表明，Hf元素的引入不仅提高了与β弛豫相关的基本结构单元的激活难度，还增加了整个β弛豫过程的激活能.

关键词：非晶合金动态弛豫微合金化准点缺陷微观结构非均匀性

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Irrig.tion's effect and applied selection on the fiber quality of Ethyl MethaneSulfonate (EMS) treated upland cotton (g.ssypium hirsutum L.)

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Journal of Cotton Research 2019年第4期2卷 1-11页

作者： WITT Travis W. ULLOA Mauricio pelletier mathew g.MENDU Venug.pal RITCHIE g.en L. Plant and Soil Science Department Texas Tech UniversityLubbockTX 79409-2122USA USDA-ARS PACSRLPlant Stress and Germplasm Development ResearchLubbockTX 79415USA USDA-ARS PACSRLPlant Stress and Germplasm Development ResearchLubbockTX 79415USA

Backg.ound:Producing.rainfed cotton (g.ssypium hirsutum L.) with hig. fiber quality has been challeng.ng.in the Texas Hig. Plains because of extended periods of insufficient rainfall during.sensitive boll developmental stag.s.g.netic variation created by Ethyl MethaneSulfonate (EMS) mutag.n has successfully improved fiber quality of cotton.However,little is known about the effect of water deficit environments on fiber quality.Three EMS treated populations were advanced from the first to the fourth g.neration (M1 to M4) as bulk harvested populations.In2014,sing.e-plant diverg.nt selection was applied based on perceived morpholog.cal and ag.onomic differences seen during.and at the end of the season.Results:Analyses from these selections in 2014-2016 showed sig.ificant (P g.h,streng.h,uniformity,and elong.tion) when compared with the orig.nal non-treated EMS source;some selections were found to have excellent fiber quality under diverse irrig.tion-reg.mes.Conclusions:Some of these selections are being.considered for g.rmplasm release and could be useful for improving.the fiber quality of cotton under water limited conditions,thereby helping.to ensure the long.term survival of the cotton industry on the Texas Hig. Plains.

关键词： Breeding Droug.t EMS Ethyl MethaneSulfonate Fiber quality Selection

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Effect of physical ag.ng.and cyclic loading.on power-law creep of hig.-entropy metallic g.ass

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Journal of Materials Science & Technolog. 2022年第20期115卷 1-9页

作者： Lang.ing.Zhang.Yajuan Duan Eloi Pineda Hidemi Kato Jean-Marc pelletier Jichao Qiao School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi’an 710072China Department of Physics Institute of Energy TechnologiesUniversitat Politècnica de Catalunya-BarcelonaTechBarcelona 08019Spain Institute for Materials Research Tohoku UniversitySendai 980-8577Japan Universitéde Lyon MATEISUMR CNRS5510Bat.B.PascalINSA-LyonVilleurbanne Cedex F-69621France Innovation Center NPU-ChongqingChongqing 401135China

The power-law relationship between creep rate decay and time is one of the intrinsic characteristics of metallic g.asses.In the current work,a La_(30)Ce_(30)Ni_(10)Al_(20)Co_(10) hig.-entropy metallic g.ass was selected as the model alloy to test the influences of physical ag.ng.and cyclic loading.on the power-law creep mechanism,which was probed by the dynamic mechanical analysis in terms of the stochastic activation,and contig.ous interplay and permeation of shear transformation zones.It is demonstrated that a notable discrepancy appears between thermal treatment and mechanical treatment on the power-law creep mechanism of this hig.-entropy metallic g.ass.On the one hand,physical ag.ng.below the g.ass transition temperature introduces the annihilation of potential shear transformation zones which contribute to creep.On the other hand,cyclic loading.can tailor the“forward”jump operations competing.with the“backward”ones of shear transformation zones by controlling.the interval time(recovery time).The current research offers a new pathway towards understanding.the creep mechanism of hig.-entropy metallic g.asses.

关键词： Hig.-entropy metallic g.ass Physical ag.ng Cyclic loading Power-law creep Shear transformation zone

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SCYL pseudokinases in neuronal function and survival

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Neural Reg.neration Research 2016年第1期11卷 42-44页

作者： Stephane pelletier Department of Immunolog. St.Jude Children's Research Hospital

The g.neration of mice lacking.SCYL1 or SCYL2 and the identification of Scyl1 as the causative g.ne in the motor neuron disease mouse model muscle deficient（Scyl1^（mdf/mdf）） demonstrated the importance of the SCY1-like family of protein pseudokinases in neuronal function and survival.Several essential cellular processes such as intracellular trafficking.and nuclear tRNA export are thoug.t to be reg.lated by SCYL proteins.However,whether dereg.lation of these processes contributes to the neurodeg.nerative processes associated with the loss of SCYL proteins is still unclear.Here,I briefly review the evidence supporting.that SCYL proteins play a role in these processes and discuss their possible involvement in the neuronal functions of SCYL proteins.I also propose ways to determine the importance of these pathways for the functions of SCYL proteins in vivo.

关键词： SCY1-like SCYL1 SCYL2 SCYL3 motor neuron hippocampal neuron pseudokinase neurodeg.neration

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Novel insig.ts for improving.the therapeutic safety and efficiency of mesenchymal stromal cells

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World Journal of Stem Cells 2020年第12期12卷 1474-1491页

作者： Mehdi Najar Johanne Martel-pelletier Jean Pierre pelletier Hassan Fahmi Department of Medicine University of MontrealOsteoarthritis Research UnitUniversity of Montreal Hospital Research Center(CRCHUM)MontrealQC H2X 0A9Canada

Mesenchymal stromal cells(MSCs)have attracted g.eat interest in the field of reg.nerative medicine.They can home to damag.d tissue,where they can exert pro-reg.nerative and anti-inflammatory properties.These therapeutic effects involve the secretion of g.owth factors,cytokines,and chemokines.Moreover,the functions of MSCs could be mediated by extracellular vesicles(EVs)that shuttle various sig.aling.messeng.rs.Althoug. preclinical studies and clinical trials have demonstrated promising.therapeutic results,the efficiency and the safety of MSCs need to be improved.After transplantation,MSCs face harsh environmental conditions,which likely dampen their therapeutic efficacy.A possible strateg. aiming.to improve the survival and therapeutic functions of MSCs needs to be developed.The preconditioning.of MSCs ex vivo would streng.h their capacities by preparing.them to survive and to better function in this hostile environment.In this review,we will discuss several preconditioning.approaches that may improve the therapeutic capacity of MSCs.As stated above,EVs can recapitulate the beneficial effects of MSCs and may help avoid many risks associated with cell transplantation.As a result,this novel type of cell-free therapy may be safer and more efficient than the whole cell product.We will,therefore,also discuss current knowledg. reg.rding.the therapeutic properties of MSC-derived EVs.

关键词： Cell-therapy Mesenchymal stromal cells Safety Extracellular vesicles Efficiency Preconditioning

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Influence of hig. config.ration entropy on damping.behaviors of Ti-Zr-Hf-Ni-Co-Cu hig. entropy alloys

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Journal of Materials Science & Technolog. 2023年第22期153卷 242-253页

作者： W.Q.Wu L.Zhang.K.K.Song.J.M.pelletier H.F.Zhang.J.C.Qiao School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi’an 710072China Shi-chang.u Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Mechanical and Electrical Eng.neering Shandong UniversityWeihai 264209China Universitéde Lyon MATEISUMR CNRS5510Bat.B.PascalINSA-LyonVilleurbanne Cedex F-69621France Chong.ing.Science and Technolog. Innovation Center of NPU Chongqing 401135China

TiNi-based shape memory alloys(SMAs)have been used as damping.materials to eliminate noise and mechanical vibration.However,their application is limited by low working.temperatures and damping.capacity.In this work,two novel Ti-Zr-Hf-Ni-Co-Cu hig. entropy shape memory alloys(HESMAs)with different transformation temperatures and damping.properties were investig.ted.The results show that Ti_(25)Zr_(8)Hf_(17)Ni_(30)Co_(5)Cu_(15) has superior damping.performance arising.from martensitic transformation,shape memory effect(thermal cycle at constant load)as well as superelasticity.Compared to traditional TiNi-based SMAs,the as-cast HESMAs exhibit a much hig.er ultrahig. yield streng.h(∼2 g.a)and storag. modulus(∼50 g.a).The hig. config.ration entropy of the HESMAs with hig. uneven internal stress and severe lattice distortion is revealed as the underlying.mechanisms g.verning.distinctive damping.performance.The effects of hig. config.ration entropy and microheterog.neity on the martensitic transforma-tion behavior and damping.performance of HESMAs are clarified in this work,which provides a basis for desig.ing.alloys with superior damping.properties.

关键词： Hig. entropy s hape memory alloy Internal friction Damping Config.ration entropy Martensitic transformation

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Advanced non-alcoholic steatohepatitis cirrhosis: A hig.-risk population for pre-liver transplant portal vein thrombosis

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World Journal of Hepatolog. 2017年第3期9卷 139-146页

作者： Jonathan g.Stine Curtis K Arg. Shawn J pelletier Daniel g.Maluf Stephen H Caldwell Patrick g.Northup Division of g.stroenterolog. and Hepatolog. Department of Medicine Center for the Study of Coagulation Disorders in Liver Disease University of Virginia Division of Transplant Department of Surgery University of Virginia

AIM To examine if liver transplant recipients with hig.-risk non-alcoholic steatohepatitis(NASH) are at increased risk for pre-transplant portal venous thrombosis.METHODS Data on all liver transplants in the United States from February 2002 throug. September 2014 were analyzed. Recipients were sorted into three distinct g.oups: Hig.-risk(ag. > 60, body mass index > 30 kg.m2, hypertension and diabetes), low-risk and non-NASH cirrhosis. Multivariable log.stic reg.ession models were constructed.RESULTS Thirty-five thousand and seventy-two candidates underwent liver transplantation and of those org.n recipients, 465 were transplanted for hig.-risk and 2775 for lowrisk NASH. Two thousand six hundred and twentysix(7.5%) recipients had pre-transplant portal vein thrombosis; 66(14.2%) of the hig.-risk NASH g.oup had portal vein thrombosis vs 328(11.8%) of the lowrisk NASH g.oup. In g.neral, all NASH recipients were less likely to be male or African American and more likely to be obese. In adjusted multivariable reg.ession analyses, hig.-risk recipients had the g.eatest risk ofpre-transplant portal vein thrombosis with OR = 2.11(95%CI: 1.60-2.76, P g.oup.CONCLUSION Liver transplant candidates with hig.-risk NASH are at the g.eatest risk for portal vein thrombosis development prior to transplantation. These candidates may benefit from interventions to decrease their likelihood of clot formation and resultant downstream hepatic decompensating.events. Prospective study is needed.

关键词：肝移植非酒精的脂肪肝疾病门高血压 Hepatolog. Coag.lopathy

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