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Sino-u.S. partnerships in research, edu.ation, and patient care：The experience of the u.iversity of pittsburgh and u.MC

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Science China(Life Sciences) 2017年第10期60卷 1150-1156页

作者： S.Levine Margaret C.McDonald Charles E.Bogosta u.iversity of pittsburgh Schools of the Health Sciences Pittsburgh PA 15261 USA u.iversity of pittsburgh Medical Center (u.MC) Pittsburgh PA 15219 USA

In 2011, the u.iversity of pittsburgh School of Medicine(u.SOM) and Tsinghu. u.iversity formed a partnership to fu.ther the edu.ation of Tsinghu. medical stu.ents. These stu.ents come to u.SOM as visiting research scholars for two years of their eight-year MD cu.ricu.u.. Du.ing this time, the stu.ents, who have completed fou. years at Tsinghu., work fu.l-time in medical school laboratories and research programs of their choice, essentially fu.ctioning as gradu.te stu.ents. In their first two months in pittsburgh, the scholars have a one-week orientation to biomedical research, followed by two-week rotations in fou. labs selected on the basis of the scholars' scientific interests, after which they choose one of these labs for the remainder of the two *** labs may be in basic science departments, basic science divisions of clinical departments, or specialized centers that focu. on approaches like simu.ation and modeling. The Tsinghu. stu.ents also have a brief exposu.e to clinical medicine. u.SOM has also formed a similar partnership with Central Sou.h u.iversity Xiangya School of Medicine in Changsha, Hu.an Province. The Xiangya stu.ents come to u.SOM for two years of research training after their sixth year and, thu., u.like the Tsinghu. stu.ents,have already completed their clinical rotations. u.SOM facu.ty members have also paved the way for u.MC(u.iversity of pittsburgh Medical Center), u.SOM's clinical partner, to engage with clinical centers in China. Major relationships involving advisory, training, managerial, and/or equ.ty roles exist with Xiangya International Medical Center, KingMED Diagnostics, First Chengmei Medical Indu.try Grou., and Macare Women's Hospital. Both u.SOM and u.MC are actively exploring other clinical and academic opportu.ities in China.

关键词： medical edu.ation research training partnership

Coal-gas interaction： implications of changes in textu.e and porosity

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International Jou.nal of Coal Science & Technology 2016年第1期3卷 10-19页

作者： Vyacheslav N. Romanov Lau.en C. Graeser Sinisha A. Jikich Yee Soong Gino A. Irdi u. S. Department of Energy National Energy TechnologyLaboratory P. O. Box 10940 Pittsburgh 15236 USA

Transient sorption and desorption of heliu. and carbon dioxide in u.per Freeport coal powder and lu.ps were analyzed. Differences in textu.e and porosity between the powder and lu.ps may affect the transport and interaction of the penetrant and coal. In this work, we address macroscopic and mesoscopic stru.tu.al differences between powdered and non-powdered coals that influ.nce the rates of the gas transport kinetics and changes in coal textu.e （swelling, shrinkage, and changes in the pore stru.tu.e and interconnectivity） and the reciprocal free-phase pressu.e decay （relaxation）. Com- parison of the mu.ti-exponential relaxation time constants as a fu.ction of pressu.e, for CO2 and inert gas （heliu.）, allows u. to postu.ate several mechanisms responsible for observed pressu.e decay patterns.

关键词： Coal Gas Porosity Stru.tu.e Diffu.ion Sorption Swelling

Calibrated dilatometer exercise to probe thermoplastic properties of coal in pressu.ized CO2

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International Jou.nal of Coal Science & Technology 2017年第3期4卷 245-251页

作者： Vyacheslav N. Romanov Ronald J. Lynn Robert P. Warzinski u. S. Department of Energy National Energy TechnologyLaboratory P. O. Box 10940 Pittsburgh PA 15236 USA

This research was aimed at testing a hypothesis, that at elevated CO2 pressu.e coal can soften at temperatu.es well below those obtained in the presence of other gases. That cou.d have seriou. negative implications for injection of CO2 into deep coal seams. We have examined the experimental design issu.s and procedu.es u.ed in the previou.ly pu.lished stu.ies, and experimentally investigated the physical behavior of a similar coal in the presence of COa as a fu.ction of pressu.e and temperatu.e, u.ing the same high-pressu.e micro-dilatometer refu.bished and carefu.ly calibrated for this pu.pose. No notable redu.tion in coal softening temperatu.e was observed in this stu.y.

关键词： Dilatometry · Carbon dioxide· Coal· Plasticization

Coal bu.sts in the deep longwall mines of the u.ited States

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International Jou.nal of Coal Science & Technology 2016年第1期3卷 1-9页

作者： Christopher Mark u.S. Mine Safety and Health Administration Pittsburgh PAUSA

Coal bu.sts involve the su.den, violent ejection of coal or rock into the mine workings. They are a particu.ar hazard becau.e they typically occu. withou. warning. Du.ing the past 2 years three u. coal miners were killed in two coal bu.sts, following a 6-year period du.ing which there were zero bu.st fatalities. This paper pu.s the u. experience in the context of worldwide research into coal bu.sts. It focu.es on two major longwall mining coalfields which have stru.gled with bu.sts for decades. The u.ah experience displays many of the ＂classic＂ bu.st characteristics, inclu.ing deep cover, strong roof and floor rock, and a direct association between bu.sts and mining activity. In Colorado, the longwalls of the North Fork Valley （NFV） also work at great depth, bu. their roof and floor strengths are moderate, and most bu.sts have occu.red du.ing entry development or in headgates, bleeders, or other ou.by locations. The NFV bu.sts also are more likely to be associated with geologic stru.tu.es and large magnitu.e seismic events. The paper provides a detailed case history to illu.trate the experience in each of these coalfields. The paper closes with a brief discu.sion of how u. longwalls have managed the bu.st risk.

关键词： u.dergrou.d mining Coal Bu.st Longwall Strata control

Synthesis of Novel Chiral Diol Ligands for the Enantioselective Reactions

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Chinese Chemical Letters 2001年第6期12卷 489-490页

作者： Ming Xia LI Yan Ming WANG Ru.Ru.CHEN Research Institu.e of Elemento-Organic Chemistry Nankai UniversityTianjin 300071 pittsburgh u.iversity Medical Center PittsburghPA 15213U.S.A

A series of novel enantiomerically pu.e diols were synthesized from D-erythorbic acid in three steps, and the absolu.e configu.ation of one of them 4a has been confirmed by X-ray analysis.

关键词： Enantiomerically pu.e chiral diol ligands X-ray analysis

A rapid solid-state synthesis of electrochemically active Chevrel phases （Mo6T8; T = S, Se） for rechargeable magnesiu. batteries

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Nano Research 2017年第12期10卷 4415-4435页

作者： Partha Saha Prashanth H. Jampani Moni K. Datta Daeho Hong Bharat Gattu.Prasad Patel Karan S. Kadakia Ayyakkannu.Manivannan Prashant N. Ku.ta Department of Bioengineering Swanson School of Engineering University of Pittsburgh Pittsburgh PA 15261 USA u.S. Department of Energy National Energy Technology Laboratory Morgantown WV26507 USA Mechanical Engineering and Materials Science Swanson School of Engineering University of Pittsburgh Pittsburgh PA 15261 USA Chemical and Petroleu. Engineering Swanson School of Engineering University of Pittsburgh Pittsburgh PA 15261 USA School of Dental Medicine University of Pittsburgh Pittsburgh PA 15251 USA Center for Complex Engineered Mu.tifu.ctional Materials University of Pittsburgh Pittsburgh PA 15261 USA Present address: Department of Ceramic Engineering Nationallnstitute ofTechnology-Rourkela Odisha-769008 India

High energy mechanical milling （HEMM） of a stoichiometric mixtu.e of molybdenu. and metal chalcogenides （Cu. and MOT2; T = S, Se） followed by heat treatment at elevated temperatu.es was su.cessfu.ly applied to synthesize Chevrel phases （Cu.Mo6T8; T = S, Se） as positive electrodes for rechargeable magnesiu. batteries. Differential scanning calorimetry （DSC）, thermogravimetric analyses （TGA）, X-ray diffraction （XRD）, and scanning electron microscopy （SEM） were u.ed to u.derstand the phase formation following milling and heat treatment. Cu. and Mo were observed to react at 714-800 K and formed an intermediate ternary Chevrel phase （Cu..83Mo3S4）, which fu.ther reacted with residu.l Mo and MoS2 to form the desired Cu.MosSs. Qu.ntitative XRD analysis shows the formation of a -96%-98% Chevrel phase at 30 min following the milling and heat treatment. The electrochemical performance of de-cu.rated Mo6S8 and Mo6Ses phases were evalu.ted by cyclic voltammetry （CV）, galvanostatic cycling, and electrochemical impedance spectroscopy （EIS）. The resu.ts of the CV and galvanostatic cycling data showed the expected anodic/cathodic behavior and a stable capacity after the first cycle with the formation of MgxMo6T8 （T = S, Se; 1 ≤ x 〈 2）. EIS at -0.1 V intervals for the Mo6Ss electrode du.ing the first and second cycle shows that partial Mg-ion trapping resu.ted in an increase in charge transfer resistance Re. In contrast, the interfacial resistance Ri remained constant, and no significant trapping was evident du.ing the galvanostatic cycling of the Mo6,Se8 electrode. Importantly, the ease of preparation, stable capacity, high Cou.ombic efficient35 and excellent rate capabilities render HEMM a viable rou.e to laboratory-scale produ.tion of Chevrel phases for u.e as positive electrodes for rechargeable magnesiu. batteries.

关键词： magnesiu. battery Chevrel phase high energy mechanicalmilling electrochemical properties

Recent Advances in Precombu.tion Coal Cleaning Processes

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Jou.nal of Thermal Science 1994年第1期3卷 67-75页

作者： Shiao－Hu.gChiang DaxinHe DepartmentofChemicalandPetroleu.Engineering UniversityofPittsburghPittsburghPA15261U.S.A Departmen

The mineral matter in coal constitu.es a major impediment to the direct u.e of coal in power plants.A concerted effort has been mou.ted to redu.e the ash/su.fu. contents in produ.t coal to meet theever mcre stringent environmental regu.ations. In recent years, significant advances have taken placein fine coal cleaning technologies. A review of recent developments in advanced physical, chemical andbiological processes for deep-cleaning of fine coal is presented.

关键词： coal cleaning flotation agglomeration chemical and biological coal cleaning

Learning to Generate Posters of Scientific Papers by Probabilistic Graphical Models

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Jou.nal of Compu.er Science & Technology 2019年第1期34卷 155-169页

作者： Yu.Ting Qiang Yan-Wei Fu.Xiao Yu.Yan-Wen Gu. Zhi-Hu. Zhou.Leonid Sigal National Key Laboratory for Novel Software Technology Nanjing UniversityNanjing 210046China School of Data Science Fudan UniversityShanghai 200433China Disney Research pittsburgh Pittsburgh 15241U.S.A.

Researchers often su.marize their work in the form of scientific *** provide a coherent and efficient way to convey core ideas expressed in scientific *** a good scientific poster,however,is a complex and time-consu.ing cognitive task,since su.h posters need to be readable,informative,and visu.lly *** this paper, for the first time,we stu.y the challenging problem of learning to generate posters from scientific *** this end,a data-driven framework,which u.ilizes graphical models,is ***,given content to display,the key elements of a good poster,inclu.ing attribu.es of each panel and arrangements of graphical elements,are learned and inferred from *** the inference stage,the maximu. a posterior (MAP)estimation framework is employed to incorporate some design *** order to bridge the gap between panel attribu.es and the composition within each panel,we also propose a recu.sive page splitting algorithm to generate the panel layou. for a *** learn and validate ou. model,we collect and release a new benchmark dataset,called NJu.Fu.an Paper-Poster dataset,which consists of scientific papers and corresponding posters with exhau.tively labelled panels and *** and qu.ntitative resu.ts indicate the effectiveness of ou. approach.

关键词： graphical design layou. au.omation probabilistic graphical model

Leaching of lanthanide and yttriu. from a Central Appalachian coal and the ashes obtained at 550-950℃

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Jou.nal of Rare Earths 2022年第5期40卷 807-814,I0005页

作者： Ronghong Lin Yee Soong Bret H.Howard Mu.phy J.Keller Elliot A.Roth Ping Wang Evan J.Granite u.S.Department of Energy National Energy Technology Laboratory626 Cochrans Mill RoadP.O.Box 10940PittsburghPA15236United States Keylogic Systems.pittsburgh PA15236United States

In this work,we investigated leaching of lanthanide and yttriu.(REY) from a Central Appalachian coal and its ashes obtained at 550-950℃ with the main pu.pose of u.derstanding the impact of ashing temperatu.e on REY leachability in water,ammoniu. su.fate,and hydrochloric *** is fou.d that the coal contains a negligible amou.t of water-solu.le REY,less than 1% ion-exchangeable REY,and abou. 28% of HCl-solu.le *** leads to dramatic changes in REY leachability in both ammoniu. su.fate and hydrochloric acid solu.ions,which is believed to be related to transformation and redistribu.ion of organically-associated REY in coal du.ing the ashing *** temperatu.e significantly affects REY leaching from coal ashes;higher ashing temperatu.e resu.ts in lower REY leachability in both *** minerals may play a significant role in changing the leachability of REY after *** addition,the resu.ts also su.gest that the organic matter in the coal is relatively enriched in heavy REY.

关键词： Acid leaching Cation exchange Coal Coal ash Rare earth elements Yttriu.