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Long-lived Nb-Ta mineralization in Mufushan,NE Hunan,South China:Geological,geochemical,and geochronological constraints

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Geoscience Frontiers 2023年第1期14卷 310-326页

作者： Nuerkanati Madayipu Huan Li thomas j.Algeo Safiyanu Muhammad Elatikpo Rub'son N'nahano Heritier Hou-Xiang Zhou Han Zheng Qian-Hong Wu Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring(Central South University) Ministry of EducationChangsha 410083China School of Geosciences and Info-Physics Central South UniversitySouth Lushan RoadChangsha 410083China State Key Laboratory of Geological Processes and Mineral Resources School of Earth ResourcesChina University of GeosciencesWuhan 430074China State Key Laboratory of Biogeology and Environment Geology School of Earth SciencesChina University of GeosciencesWuhan 430074China Department of Geology University of CincinnatiCincinnatiOH 45221-0013 USA Hunan Provincial Institute of Land and Resources Planning Changsha 410007China

The Mufushan Complex(MFSC),located in northeastern Hunan,is a significant producer of Nb-Ta-Li-Be rare metals in South *** present study examines the genetic relationship,material provenance,fluid evolution,and metallogeny of the co-developed ore-free pegmatite(OFP)and ore-bearing pegmatite(OBP)in granite-related pegmatite-type Nb-Ta rare-metal deposits in *** minerals(columbite-tantalite(coltan),zircon,and monazite)were chosen for *** coltan grains display both primary crystallization structures(crystal homogeneity,oscillatory zonings,and primary growth rims)resulting from equilibrium and disequilibrium reactions due to localized changes in the physicochemical conditions and environment,as well as later replacement structures(alteration rims,patches,irregular zonations,and complex zonations)from metasomatic replacement processes related to hydrothermal fluid *** coltan yielded two weighted mean^(206)Pb/^(238)U ages of 138.1±2.1 Ma and 125.3±2.0 Ma corresponding to magmatic and hydrothermal Nb-Ta mineralization *** the OFP,zircons also yielded two weighted mean^(206)Pb/^(238)U ages of 138.4±0.8 Ma and 131.5±0.7 Ma,whereas monazite gave a weighted mean U-Pb age 142.9±1.2 *** ages of 142-138 Ma and 131 Ma represent the early and late stages of OFP crystallization and barren pegmatites in the MFSC,*** Lu-Hf isotopic compositions link rare-metal metallogenesis to the Lengjiaxi Group,which was the source material to the Mufushan composite ***ε_(Hf)(t)values and TDM2 ages from the OFP(-7.6 to-3.6 and 1676-1418 Ma,respectively)and the OBP(-14.1 to+4.9 and 2976-1548 Ma,respectively)are akin to those of schists and metasandstones of the metasedimentary Lengjiaxi *** propose a long-lived(ca.13-Myr)event involving two metallogenic episodes of Nb-Ta mineralization in the Mufushan *** study demonstrates the potential of zircon,coltan,and monazite for fingerprinting minerals and classifying the m

关键词： Zircon Coltan Monazite Fluid evolution Pegmatite Rare-metal deposit

Effects of contact/collision sport history on gait in early-to mid-adulthood

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journal of Sport and Health Science 2023年第3期12卷 398-405页

作者： Katherine j.Hunzinger jaclyn B.Caccese Rebekah Mannix William P.MeehanⅢ jocelyn F.Hafer C.Buz Swanik thomas A.Buckley Department of Biostatistics Epidemiologyand InformaticsUniversity of Pennsylvania Perelman School of MedicinePhiladelphiaPA 19104USA Penn Injury Science Center University of PennsylvaniaPhiladelphiaPA 19104USA School of Health and Rehabilitation Sciences The Ohio State University College of MedicineColumbusOH 43210USA Division of Emergency Medicine Boston Children's HospitalBostonMA 02115USA Departments of Pediatrics and Emergency Medicine Harvard Medical SchoolBostonMA 02115USA The Micheli Center for Sports Injury Prevention WalthamMA 02453USA Division of Sports Medicine Department of OrthopedicsBoston Children's HospitalBostonMA 02453USA Department of Pediatrics and Orthopedics Harvard Medical SchoolBostonMA 02453USA Department of Kinesiology and Applied Physiology University of DelawareNewarkDE 02453USA Interdisciplinary Program in Biomechanics and Movement Science University of DelawareNewarkDE 02453USA

Background:To determine the effect of contact/collision sport participation on measures of single-task(ST)and dual-task(DT)gait among early-to middle-aged ***:The study recruited 113 adults(34.88±11.80 years,(mean±SD);53.0%female)representing 4 *** included(a)former non-contact/collision athletes and non-athletes who are not physically active(n=28);(b)former non-contact/collision athletes who are physically active(n=29);(c)former contact/collision sport athletes who participated in high-risk sports and are physically active(n=29);and(d)former rugby players with prolonged repetitive head impact exposure history who are physically active(n=27).Gait parameters were collected using inertial measurement units during ST and DT *** cost was calculated for all gait parameters(double support,gait speed,and stride length).Groups were compared first using one-way analysis of *** a multiple regression was performed for participants in the highrisk sport athletes and repetitive head impact exposure athletes groups only to predict gait outcomes from contact/collision sport career ***:There were no significant differences between groups on any ST,DT,or DT cost outcomes(p>0.05).Contact/collision sport duration did not predict any ST,DT,or DT cost gait ***:Years and history of contact/collision sport participation does not appear to negatively affect or predict neurobehavioral function in early-to mid-adulthood among physically active individuals.

关键词： Exercise Neurodegenerative disease Postural control Rugby Subconcussive impacts

Microbial influences on paleoenvironmental changes during the Permian-Triassic boundary crisis

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Science China Earth Sciences 2014年第6期57卷 965-975页

作者： LUO GenMing XIE ShuCheng LIU Deng thomas j. ALGEO State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences

The biosphere interacts and co-evolves with natural *** is known about the biosphere’s response to ancient environmental perturbations,but less about the biosphere’s influences on environmental change through earth ***,we discuss the roles of microbes in environmental changes during the critical Permian-Triassic(P-Tr)transition and present a perspective on future geomicrobiological *** biomarkers,stable isotopic compositions of carbon,nitrogen and sulfur,and mineralogical investigations have shown that a series of microbial functional groups might have flourished during the P-Tr transition,including those capable of sulfate reduction,anaerobic H2S oxidation,methanogenesis,aerobic CH4oxidation,denitrification,and nitrogen *** microbes may have served to both enhance and degrade the habitability of the Earth-surface environment during this *** integrated microbial roles have enabled the Earth’s exosphere to be a self-regulating system.

关键词：古环境变化微生物学二叠系三叠系界线地球历史硫同位素组成厌氧氧化

Evaluation of a model for providing cost effective,accessible continuing education to the forensic science community

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Forensic Sciences Research 2021年第4期6卷 224-230页

作者： thomas j.Gluodenis Department of chemistry&Physics Lincoln UniversityLincoln UniversityPAUSA

This study presents a detailed model and its subsequent assessment for the development and optimized delivery of continuing education for the forensic science *** continuing education is on the rise as this modality of content dissemination allows for accessibility,convenience,and *** model,which includes an educational needs assessment,gap analysis,online content delivery and archival,was evaluated through the launch of a global training event/symposium *** four-year study of over 6000 participants representing>75 countries provides empirical support for the model based upon registration/attendance data and participant self-assessment *** practices are identified relative to content and format,operational excellence,technology,and financing of the *** directions along with opportunities to further enhance the model are also discussed.

关键词： Forensic sciences continuing education educational requirements online web-based certification

Solid-state emissive biphenylene bridged bisaroyl-S,N-ketene acetals as distinct aggregation-induced enhanced emitters and fluorometric probes

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Aggregate

Aggregate 2021年第5期2卷 179-184页

作者： Lukas Biesen thomas j.j.Muller Institut fur Organische und Makromolekulare Chemie Heinrich-Heine-Universitat DusseldorfDüsseldorfGermany

Biphenylene bridged bisaroyl-S,N-ketene acetals can be readily synthesized by a one-pot Masuda borylation-Suzuki arylation sequence,thus,yielding a library of 20 bisaroyl-S,N-ketene acetals with tunable solid-state emission and aggregationinduced enhanced emission characteristics depending on the para substituents in the starting *** applications as fluorometric probe of alcoholic beverages are outlined.

关键词： aggregation-induced emission aroyl-S N-ketene acetals liquor sensors one-pot reaction solid-state

Patient selection essential in optimizing the benefit of radical prostatectomy for patients with organ-confined prostate cancer

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Asian journal of Andrology 2011年第6期13卷 789-790页

作者： Matthew j Resnick thomas j Guzzo The Division of Urology The Hospital of the University of Pennsylvania Philadelphia PA 19104 USA

P rostate cancer is the most common noncutaneous malignancy in the United States and is a highly prevalent disease worldwide in industrialized nations.1 Prostate cancer is also a leading cause of cancer related mortality in the United States with an estimated 32 050 deaths in 2010. If one were to simply look at the raw mortality data,

关键词： Prostate cancer noncutaneous appropriate treatment decisions

Prospective,multicentre study of screening,investigation and management of hyponatraemia after subarachnoid haemorrhage in the UK and Ireland

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Stroke & Vascular Neurology 2023年第3期8卷 207-216,I0028-I0059页

作者： james j M Loan Steven Tominey Kirun Baweja julie Woodfield thomas j G Chambers Mark Haley Simran S Kundu H Y josephine Tang Anthony N Wiggins Michael T C Poon Paul M Brennan Translational Neurosurgery The University of Edinburgh Centre for Clinical Brain SciencesEdinburghUK Neurosurgery NHS LothianEdinburghUK Neurosurgery Institute of Neurological SciencesGlasgowUK Department of Medicine School of MedicineDentisty and NuringUniversity of GlasgowGlasgowUK Internal Medicine Queen's UniversityKingstonOntarioCanada Centre for Discovery Brain Sciences University of EdinburghEdinburghUK Edinburgh Centre for Diabetes and Endocrinology NHS LothianEdinburghUK Radiology University Hospitals Plymouth NHS TrustPlymouthUK Department of Medicine Cork University HospitalUniversity College CorkCorkIreland

Background Hyponatraemia often occurs after subarachnoid haemorrhage(SAH).However,its clinical significance and optimal management are *** audited the screening,investigation and management of hyponatraemia after *** We prospectively identified consecutive patients with spontaneous SAH admitted to neurosurgical units in the United Kingdom or *** reviewed medical records daily from admission to discharge,21 days or death and extracted all measurements of serum sodium to identify hyponatraemia(10 *** of hyponatraemia with outcome were assessed using logistic regression with adjustment for predictors of outcome after SAH and admission *** assessed hyponatraemia-free survival using multivariable Cox *** 175/407(43%)patients admitted to 24 neurosurgical units developed hyponatraemia.5976 serum sodium measurements were *** osmolality,urine osmolality and urine sodium were measured in 30/166(18%)hyponatraemic patients with complete *** most frequently target daily fluid intake was>3 L and this did not differ during hyponatraemic or non-hyponatraemic episodes.26%(n/N=42/164)patients with hyponatraemia received sodium supplementation.133(35%)patients were dead or dependent within the study period and 240(68%)patients had hospital admission for over 10 *** the multivariable analyses,hyponatraemia was associated with less dependency(adjusted OR(aOR)=0.35(95%CI 0.17 to 0.69))but longer admissions(aOR=3.2(1.8 to 5.7)).World Federation of Neurosurgical Societies grade I-III,modified Fisher 2-4 and posterior circulation aneurysms were associated with greater hazards of *** In this comprehensive multicentre prospective-adjusted analysis of patients with SAH,hyponatraemia was investigated inconsistently and,for most patients,was not associated with changes in management or clinical outcome.T

关键词： admitted urine centre

Neuromodulator interactions and spinal cord injury in lamprey

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Neural Regeneration Research 2018年第4期13卷 643-644页

作者： David Parker thomas j.McClelland Department of Physiology Neuroscience and DevelopmentUniversity of Cambridge

Neuromodulation is mediated by neurotransmitters that typically act on G-protein-coupled *** can confer behavioural flexibility by modifying the functional properties of anatomically hard-wired neural *** neuromodulators generally have divergent cellular and synaptic effects（Harris-Warrick and johnson,2010）,and different modulators,

关键词： Figure Neuromodulator interactions and spinal cord injury in lamprey

The role of polysulfide-saturation in electrolytes for high power applications of real world Li-S pouch cells

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Nano Research 2023年第6期16卷 8313-8320页

作者： Tom Boenke Sebastian Kirchhoff Florian SReuter Florian Schmidt Christine Weller Susanne Dörfler Kai Schwedtmann Paul Härtel thomas Abendroth Holger Althues jan j.Weig Stefan Kaskel Technische Universität Dresden Chair of Inorganic Chemistry IBergstr.6601069 DresdenGermany Fraunhofer Institute for Material and Beam Technology(IWS) Winterbergstr.2801277 DresdenGermany Technische Universität Dresden Chair of Inorganic Molecular ChemistryMommsenstraße 401069 DresdenGermany

The lithium-sulfur(Li-S)technology is the most promising candidate for next-generation batteries due to its high theoretical specific energy and steady progress for applications requiring lightweight batteries such as aviation or heavy electric *** these applications,however,the rate capability of Li-S cells requires significant *** electrolyte formulations in Li-S batteries enable new pathways for cell development and adjustment of all ***,their rate capability at pouch cell level is often neither evaluated nor compared to state of the art(SOTA)LiTFSI/dimethoxyethane/dioxolane(LITFSI:lithium-bis(trifluoromethylsulfonyl)imide)***,the combination of the sparingly polysulfide(PS)solvating hexylmethylether/1,2-dimethoxyethane(HME/DME)electrolyte and highly conductive carbon nanotube Buckypaper(CNT-BP)with low porosity was evaluated in both coin and pouch cells and compared to dimethoxyethane/dioxolane reference *** advanced sulfur transfer melt infiltration was employed for cathode production with *** Li+ion coordination in the HME/DME electrolyte was investigated by nuclear magnetic resonance(NMR)and Raman ***,ionic conductivity and viscosity was investigated for the pristine electrolyte and a polysulfide-statured *** electrolytes,DME/DOL-1/1(DOL:1,3-dioxolane)and HME/DME-8/2,are then combined with CNT-BP and transferred to multi-layered pouch *** study reveals that the ionic conductivity of the electrolyte increases drastically over state of(dis)charge especially for DME/DOL electrolyte and lean electrolyte regime leading to a better rate capability for the sparingly polysulfide solvating *** evaluation in prototype cells is an important step towards bespoke adaption of Li-S batteries for practical applications.

关键词： lithium-sulfur pouch cell polysulfide solubility electrolyte characterization high power