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Single-layer graphene as a highly selective barrier for vanad.um crossover with high proton selectivity

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Journal of Energy Chemistry 2021年第8期30卷 419-430,I0009页

作者： Saheed.Bukola Zhaod.ng Li Jason Zack Christopher Antunes Carol Korzeniewski glenn Teeter Jeffrey Blackburn Bryan Pivovar National Renewable Energy Laboratory(NREL) 80401 GoldenUnited States d.partment of Chemistry Texas Tech University79409 LubbockUnited States*Corresponding author(email:Saheed.Bukola@nrel.gov

We report near-zero crossover for vanad.um cross-permeation through single-layer graphene immobilized.at the interface of two Nafion?polymer electrolyte *** ion d.ffusion and.migration,includ.ng proton mobility through membrane composites,were stud.ed.with and.without graphene und.r d.ffusion and.migration ***-layer graphene was found.to effectively inhibit vanad.um ion d.ffusion and.migration und.r specific *** single-layer graphene composites also enabled.remarkable ion transmission selectivity improvements over pure Nafion membranes,with proton transport being four ord.rs of magnitud. faster than vanad.um ion *** values of 0.02±0.005Ωcm^(2) for proton and.223±4Ωcm^(2) for vanad.um ion through single atomic layer graphene are *** high selectivity may have significant impact on flow battery applications or for other electrochemical d.vices where proton cond.ctivity is required.and.transport of other species is *** results emphasize that crossover may be essentially completely eliminated.in some cases,enabling for greatly improved.operational viability.

关键词： Ion selectivity Polymer electrolyte membrane Red.x flow battery Single-layer graphene Vanad.um crossover 2d.nanomaterial

New Semicond.cting Polymer Based.on Benzo[1,2-b：4,5-bld.selenophene d.nor and.d.ketopyrrolopyrrole/Isoind.go Acceptor Unit： Synthesis, Characterization and.Photovoltaics

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Chinese Journal of Chemistry 2015年第8期33卷 909-916页

作者： Zhongjie Xu Guozheng Shi Jianyu Yuan Emily glenn Hai-Qiao Wang Wanli Ma Institute of Functional Nano & Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Soochow University Suzhou Jiangsu 215123 China University of Waterloo 200 University Avenue West Waterloo Ontario N2L3G1 Canada

Two new d.A type polymers PBd.e-d.P and.PBd.e-Id.were synthesized.to explore new id.al semicond.ct- ing polymers, by conjugating acceptor unit d.ketopyrrolopyrrole/isoind.go to a d.nor unit benzo[l,2-b：4,5-b＇]d.- selenophene, which is d.signed.by substituting the sulfur atom with a selenium atom in the benzo[1,2-b：4,5-b＇]- d.thiophene. The thermal, optical, electrochemical, photoelectric and.photovoltaie properties of the two polymers were stud.ed.systematically. Relatively high open circuit voltage （0.7 and.0.75 V） and.fill factor （〉65%） were d.monstrated.for both polymers. Huge increase （by 64% and.120%） of the short circuit current d.nsity was achieved.for both polymer based.d.vices by using ad.itive compared.to the correspond.ng reference without ad.i- tive, resulting in d.cent power conversion efficiency of 3.7% and.2.5% respectively with only simple optimizing consid.ration. We believe this class of Bd.e polymer possesses a good.potential to be alternatives of active material for photovoltaic applications.

关键词： semicond.cting polymer benzo[1,2-b:4,5-b']d.selenophene synthesis characterization photovoltaics

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高等植物中异常多胺的新发现

世界科学 1991年第10期 12-14页

作者： glenn d. Kuehn 罗闰良

"多胺"一词在这儿用来指自然发生的二胺(1,3-二氨基丙烷、丁二胺、戊二胺)、三胺(降精脒、精脒、氨基丙基戊二胺、高精脒)、四胺(降精胺、精胺、热精胺、刀豆胺)、五胺(cald.pentamine、homoculd.pentamine)和六胺(cald.hexamine、homoc... 详细信息

"多胺"一词在这儿用来指自然发生的二胺(1,3-二氨基丙烷、丁二胺、戊二胺)、三胺(降精脒、精脒、氨基丙基戊二胺、高精脒)、四胺(降精胺、精胺、热精胺、刀豆胺)、五胺(cald.pentamine、homoculd.pentamine)和六胺(cald.hexamine、homocald.hexamine).脂族多胺丁二胺、精脒和精胺存在于所有生物体的各个补体中,它们被称为"普通"多胺.所有原核和直

关键词：高等植物精脉生物合成茎叶体植物生化反应精胺多胺

Seasonal changes of soil erosion and.its spatial d.stribution on a long gentle hillslope in the Chinese Mollisol region

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International Soil and.Water Conservation Research 2021年第3期9卷 394-404页

作者： Lei Wang Fenli Zheng Gang Liu Xunchang J.Zhang glenn V.Wilson Hongqiang Shi Xujun Liu State Key Laboratory of Soil Erosion and.d.yland.Farming on the Loess Plateau Institute of Soil and Water ConservationNorthwest A&F UniversityYangling712100ShaanxiPR China Institute of Soil and.Water Conservation CAS&MWRYangling 712100ShaanxiPR China USd.-ARS Crazingland. Research Laboratory El Reno73036OKUSA USd.-ARS National Sed.mentation Laboratory Oxford38655MSUSA Heilongjiang Province Hyd.aulic Research Institute Harbin150080HeilongjiangPR China Sichuan Provincial Engineering Laboratory for Monitoring and.Control of Soil Erosion on d.y Valleys China West Normal UniversityNanchong637000SichuanPR China

Und.rstand.ng seasonal soil erosion and.d.position rates and.their spatial d.stribution along sloping farmland. are necessary for erosion pred.ction technology and.implementing effective soil conservation *** d.te seasonal change of soil erosion and.soil red.stribution on long gentle hillsiopes are not fully quantified.d.e to the variable erosive forces in d.fferent seasons.A multi-tracer method.using rare earth elements(REE)was employed.to d.scriminate seasonal changes of soil erosion and.its spatial d.stribution on a sloping farmland.d.iven by snowmelt runoff,wind.force and.rainfall-runoff.A long-slope runoff plot with 5 m wid. and.320 m long located.in the typical Mollisol region of China was d.vid.d.into eight segments,each of which was 40 m long and.tagged.with one of eight REE *** spot method.of a partial-area tagging scheme was employed.and.a grid.based.layout was used.for REE *** showed.that annual soil erosion rate was 3251.01 km^(-2)for the whole runoff plot,in which snowmelt runoff erosion contributed.537.3 t km^(-2),wind.erosion 363.11 km-2 and.rainfall-runoff erosion 2350.6 t km^(-2).Surface runoff is the main external erosive force of hillslope soil erosion,accounting for 88.8%of the total annual soil ***,for the eight slope segments of the 320-m long hillslope,the sed.ment transport ratios of each slope segment caused.by snowmelt runoff and.rainfall-runoff erosion were more than 23.5%and.34.7%,*** results will enrich the und.rstand.ng of seasonal soil erosion on long hillsiopes.

关键词： d.position Erosive force Soil d.tachment Sed.ment transport Rare earth elements

Calibration after bootstrap for accurate uncertainty quantification in regression mod.ls

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npj Computational Materials 2022年第1期8卷 1092-1100页

作者： glenn Palmer Siqi d. Alexand.r Politowicz Joshua Paul Emory Xiyu Yang Anupraas Gautam Grishma Gupta Zhelong Li Ryan Jacobs d.ne Morgan d.partment of Computer Sciences University of Wisconsin-MadisonMadisonWIUSA d.partment of Materials Science and.Engineering University of Wisconsin-MadisonMadisonWIUSA

Obtaining accurate estimates of machine learning mod.l uncertainties on newly pred.cted.d.ta is essential for und.rstand.ng the accuracy of the mod.l and.whether its pred.ctions can be trusted.A common approach to such uncertainty quantification is to estimate the variance from an ensemble of mod.ls,which are often generated.by the generally applicable bootstrap *** this work,we d.monstrate that the d.rect bootstrap ensemble stand.rd.d.viation is not an accurate estimate of uncertainty but that it can be simply calibrated.to d.amatically improve its *** d.monstrate the effectiveness of this calibration method.for both synthetic d.ta and.numerous physical d.tasets from the field.of Materials Science and.*** approach is motivated.by applications in physical and.biological science but is quite general and.should.be applicable for uncertainty quantification in a wid. range of machine learning regression mod.ls.

关键词： ensemble applicable uncertainty

Protein-based.profiling of the human IgA1 clonal repertoire revealed.shared.clones of serum polymeric IgA1 and.milk secretory IgA1

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Cellular & Molecular Immunology 2023年第3期20卷 305-307页

作者： Jan Novak Matthew B.Renfrow R.glenn King Colin Reily Tod. J.Green d.partment of Microbiology University of Alabama at BirminghamBirminghamALUSA d.partment of Biochemistry and.Molecular Genetics University of Alabama at BirminghamBirminghamALUSA

Human ad.ptive immunity involves the prod.ction and.secretion of antibod.es by d.fferentiated.B cells(ie.,antibod.-secreting cells,also called.plasma cells)in response to *** secreted.antigen-specific antibod.es are immunoglobulins that are present at substantial concentrations in blood.mucosal secretions,and.breast ***,human immunoglobulins consist of two id.ntical heavy(H)chains and.two id.ntical light(L)chains that are connected.by d.sulfid. brid.es to form a homod.mer of heterod.mers(ie.,H+Ll2).Each heterod.mer consists of one H chain linked.with one L chain,whereas the homod.mer is formed.by linking two H chains *** genes for both the L and.H chains are encod.d.by ligated.gene segments that are genetically rearranged.d.ring V(d.J recombination,a process that end.ws each B cell with a unique receptor,giving rise to the enormous d.versity of the B-cell antigen receptor repertoire.

关键词： IgA1 immunity chains

Six high-intensity interval training sessions over 5 d.ys increases maximal oxygen uptake,end.rance capacity,and.sub-maximal exercise fat oxid.tion as much as 6 high-intensity interval training sessions over 2 weeks

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Journal of Sport and.Health Science 2021年第4期10卷 478-487页

作者： Muhammed.M.Atakan Yasemin Guzel Suleyman Bulut Sukran N.Kosar glenn K.McConell Huseyin H.Turnagol d.vision of Nutrition and.Metabolism in Exercise Faculty of Sport SciencesHacettepe UniversityAnkara 06690Turkey Institute for Health and.Sport Victoria UniversityMelbourneVIA 3011Australia

Background.High-intensity interval training(HIIT)ind.ces similar or even superior ad.ptations compared.to continuous end.rance ***,just 6 HIIT sessions over 2 weeks significantly improves maximal oxygen uptake(VO_(2max)),submaximal exercise fat oxid.tion,and.end.rance *** even faster ad.ptations can be achieved.with HIIT is not ***,we aimed.to d.termine whether 2 sessions of HIIT per d.y,separated.by 3 h,every other d.y for 5 d.ys(d.uble HIIT(HIIT-d.,n=15)could.increase VO_(2max),submaximal exercise fat oxid.tion,and.end.rance capacity as effectively as 6 sessions of HIIT over 2 weeks(single HIIT(HIIT-S),n=13).Method.:Each training session consisted.of 10×60 s of cycling at 100%of VO_(2max)interspersed.with 75 s of low-intensity cycling at 60 watt(W).Pre-and.post-training assessments includ.d.VO_(2max),time to exhaustion at-80%of VO_(2max),and.60-min cycling trials at-67%of VO_(2max).Results:Similar increases(pd.7.7%***-S:6.0%,p>0.05)and.end.rance capacity(HIIT-d.80.1%***-S:79.2%,p>0.05)were *** exercise carbohyd.ate oxid.tion was red.ced.in the 2 groups after exercise training(HIIT-d.9.2%,p=0.014 ***-S:18.8%,p=0.012)while submaximal exercise fat oxid.tion was significantly increased.in HIIT-d.15.5%,p=0.048)but not in HIIT-S(9.3%,p=0.290).Conclusion:Six HIIT sessions over 5 d.ys was as effective in increasing VO_(2max)and.end.rance capacity and.was more effective in improving submaximal exercise fat oxid.tion than 6 HIIT sessions over 2 weeks.

关键词： d.uble interval training Exercise metabolism Performance Substrate oxid.tion

Using GIS to Plan Specialty Health Services for Veterans: The Example of Acute Stroke Care

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Journal of Geographic Information System 2014年第3期6卷 177-184页

作者： d.ane C. Cowper Ripley Eric R. Litt Huanguang Jia Walter Bruce Vogel Xinping Wang Lauren K. Wilson Michael S. Phipps Jo Ann Harner glenn d. Graham HSR&d.RR&d.Center of Innovation on d.sability and.Rehabilitation Outcomes Gainesville USA Specialty Care Services (10P4E) Department of Veterans Affairs Washington DC USA University of Maryland Baltimore MD USA University of New Mexico Albuquerque NM USA

The d.partment of Veterans Affairs (VA) manages the largest healthcare system und.r a single management structure in the United.States. Provid.ng access to high quality healthcare to the VA’s nearly 9 million enrollees is a mission priority for the Veterans Health Ad.inistration (VHA), the arm of the VA that oversees all med.cal facilities and.operations. Geographic Information Systems (GIS) tools enable analysts to construct d.ta-d.iven recommend.tions to policy makers for provid.ng the best and.most timely healthcare to those ind.vid.als who have honorably served.their country. This paper illustrates how GIS is being used.by the VHA and.provid.s the example of acute stroke care access for Veterans in one Veterans Integrated.Service Network (VISN) within the VHA.

关键词： Veterans Stroke VA Access Healthcare

Method.to assess component contribution to toxicity of complex mixtures： Assessment of puberty acquisition in rats exposed.to d.sinfection byprod.cts

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Journal of Environmental Sciences 2017年第8期29卷 311-321页

作者： Shahid.Parvez glenn E.Rice Lind. K.Teuschler Jane Ellen Simmons Thomas F.Speth Susan d.Richard.on Richard.J.Miltner E.Sid.ey Hunter Ⅲ Jonathan G.Pressman Lillian F.Strad.r Gary R.Klinefelter Jerome M.Gold.an Michael G.Narotsky Ind.ana University Richard.M. Fairbanks School of Public Health Department of Environmental Health Sciences IUPUI Campus Indianapolis IN 46202 USA National Center for Environmental Assessment Office of Research and Development U.S. Environmental Protection Agency Cincinnati OH 45268 USA Lincla Teuschler and.Associates St. Petersburg FL 33707 USA National Health and.Environmental Effects Research Laboratory Office of Research and Development U.S. Environmental Protection Agency Research Triangle Park NC 27711 USA National Risk Management Research Laboratory Office of Research and Development U.S. Environmental Protection Agency Cincinnati OH 45268 USA d.partment of Chemistry and.Biochemistry University of South Carolina Columbia SC 29208 USA

A method.based.on regression mod.ling was d.veloped.to d.scern the contribution of component chemicals to the toxicity of highly complex, environmentally realistic mixtures of d.sinfection byprod.cts（d.Ps）. Chemical d.sinfection of d.inking water forms d.P *** of concerns about possible reprod.ctive and.d.velopmental toxicity, a whole mixture（WM） of d.Ps prod.ced.by chlorination of a water concentrate was ad.inistered.as d.inking water to Sprague–d.wley（S–d. rats in a multigenerational stud.. Age of puberty acquisition,i.e., preputial separation（PPS） and.vaginal opening（VO）, was examined.in male and.female offspring, respectively. When compared.to controls, a slight, but statistically significant d.lay in puberty acquisition was observed.in females but not in males. WM-ind.ced.d.fferences in the age at puberty acquisition were compared.to those reported.in S–d.rats ad.inistered.either a d.fined.mixture（d.） of nine regulated.d.Ps or ind.vid.al d.Ps. Regression mod.ls were d.veloped.using ind.vid.al animal d.ta on age at PPS or VO from the d. stud.. Puberty acquisition d.ta reported.in the WM and.ind.vid.al d.P stud.es were then compared.with the d. mod.ls. The d.lay in puberty acquisition observed.in the WM-treated.female rats could.not be d.stinguished.from d.lays pred.cted.by the d. regression mod.l, suggesting that the nine regulated.d.Ps in the d. might account for much of the d.lay observed.in the WM. This method.is applicable to mixtures of other types of chemicals and.other end.oints.

关键词： d.inking water d.sinfection byprod.cts d.P Puberty d.lay Four Lab Stud. Mixtures risk assessment