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r.al-time in situ detection and quantification of bacter.a in the Ar.tic envir.nment

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Jour.al of Innovative Optical Health Sciences 2014年第2期7卷 35-45页

作者： Linda powers Walther.r.Ellis Jr. Chr.stopher.r.Lloyd Depar.ment of Electr.cal and Computer.Engineer.ng Depar.ment of Biomedical Engineer.ng Univer.ity of Ar.zona Tuc sonAZ 85721 Depar.ment of Biomedical Enginer.ng University of ArizonaTucsonAz 85721 Micr.BioSystems of Ar.zona 1665.E 18th St.Suite 204TucsonAZ 85719

At pr.sent,ther. ar. no methods that deter.ine the total micr. ial load on an abiotic substr. tein r.al *** utility of such a capability r.nges fr.m ster.lization and medical diagnostics tothe sear.h for.new micr.or.anisms in the envir.nment and study of their.ecological *** the development of a hand held,fluor.scence detection device and demonstr.te its applicability to the field detection of Ar.tic bacter.a,This technology is based on the ear.y pioneer.ng wor. of Br.tton Chance which elucidated the intr.nsic fiuor.scence of a number.ofmetabolites and pr.tein cofactor. in cels,including r.duced pyr.dine nucleotides,cytochr.mesand flavins.A PDA contr.ls the device(fluor.scence excitation and data collection)and pr.cessesthe multiwavelength signals to yield bacter.al cell counts,including cstimates of ive cells,deadcells and *** existing methods for.cell counting,this method r.quir.s no samplecontact or.addition of *** use of this technology is demonstr.ted with in situmea sur.ments of two sub-glacial micr.bial communities at sites in Palander.and colonized sur.acer.cks in the Bockijor. Volcanic Complex dur.ng AMASE 2008(Ar.tic Mar. Analog Svalbar. Expedition),The total bacter.al load on the inter.ogated sample sur.aces r.nged fr.m1o9 cells/cm^(2).

关键词： Intr.nsic fuor.scence micr.bial sensor optical detection amplitude modulation Svalbar. Ar.hipelago.

Chinese Political Theor. in Dialogue with r.usseau

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Jour.al of For.ign Languages and Cultur.s 2022年第1期6卷 123-140,155页

作者： Mar.in powers Univer.ity of Michigan

Within the vast body of scholar.hip on the Enlightenment,only a small por.ion addr.sses the r.le of China in the debates of that *** those,scar.ely any concer.s the r.lationship between China and r.usseau's *** the connections ar. many,and *** essay sur.eys a body of Chinese political theor. available to r.usseau,then compar.s r.usseau's under.tanding of sover.ignty,the“people,”popular.will,public opinion,and the author.ty of office,with compar.ble ter.s pr.sent in the Chinese theor. available to *** aim of this exer.ise is not so much to establish influence,though that can be dificult to ***,the essay atter.pts to show that r.usseau's system gener.tes contr.dictions in par. because he attempts to combine par.iamentar. pr.cedur. with the conception of sover.ignty and the popular.will found in his Chinese sour.es.

关键词： China political theor. r.usseau sover.ignty popular.will checks and balances public opinion cor.uption

A sweet new study: tr.pical for.st species use nonstr.ctur.l car.ohydr.tes in differ.nt ways dur.ng dr.ught

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Jour.al of Plant Ecology 2020年第4期13卷 387-388页

作者： Jennifer.S.powers Depar.ments of Ecology Evolution and Behaviorand Plant and Microbial BiologyUniversity of MinnesotaSt.PaulMN 55108USA

Anthr.pogenic climate change r.sults in mor. than just elevated *** r.gimes ar. also impacted,and these changes include alter.d r.infall amounts,seasonality and var.ability(Feng et al.2013),and incr.ases in the fr.quency and sever.ty of dr.ughts(Dai 2013).Climate change is likely to have pr.found consequences for.for.sts(Br.dr.bb et al.2020).While the potential effects of dr.ughts on for.sts thr.ugh tr.e mor.ality have been acknowledged for.some decades(Kar.ig and Wyfor. 1968),a concer.ed focus on tr.es and dr.ughts in the scientific liter.tur. is r.latively *** evidence in suppor. of this claim,a Web of Science sear.h for.the key wor.s‘tr.e and mor.ality and dr.ught’for.the year. 1900 thr.ugh 2020 r.veals that 82%of ar.icles on this topic have been published in the last *** such,ther. is still disagr.ement on the mechanisms thr.ugh which individual tr.es,species and for.st communities r.spond to dr.ught(Br.dr.bb et al.2020).

关键词： dr.ught consequences str.ctur.l

The 12th Wor.shop on Antar.tic Meteor.logy and Climate

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Advances in Atmospher.c Sciences 2018年第7期35卷 753-756页

作者： Matthew A.LAZZAr. Jor.an G.powers Car.l A.COSTANZA David H.Br.MWICH Scott CAr.ENTIEr.Steve r.COLWELL Depar.ment of Physical Sciences School of Arts and Sciences Madison Area Technical College Madison WI 53704 USA Antar.tic Meteor.logical r.sear.h Center Space Science and Engineering Center University of Wisconsin-Madison Madison WI 53706 USA National Center.for.Atmospher.c r.sear.h Boulder CO 80300 USA polar.Meteor.logy Gr.up Byrd Polar & Climate Research Center The Ohio State University Columbus OH 43210 USA Bur.au of Meteor.logy Hobart Tasmania 7000 Australia Br.tish Antar.tic Sur.ey Cambridge CB3 0ET United Kingdom

*** The 12th Wor.shop on Antar.tic Meteor.logy and Climate（WAMC）,for.er.y known as the Antar.tic Meteor.logical Obser.ation,Modeling,and For.casting（AMOMF）Wor.shop（AMOMFW）,was held at the National Center.for.Atmospher.c r.sear.h（NCAr.in Boulder.Color.do,USA on 26–28 June *** annual wor.shop dates fr.m 2006,and r.cent meetings have been the 10th AMOMF Wor.shop held in 2015 in Cambr.dge,

关键词： AWS The 12th Wor.shop on Antar.tic Meteor.logy and Climate SH

Mending a br.ken hear. with novel car.iogenic small molecules

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Cell r.gener.tion 2022年第1期11卷 188-191页

作者： Nevan powers Guo N.Huang Car.iovascular.r.sear.h Institute&Depar.ment of Physiology University of CaliforniaSan FranciscoSan FranciscoCA 94158USA Eli and Edythe Br.ad Center.for.r.gener.tion Medicine and Stem Cell r.sear.h University of CaliforniaSan FranciscoSan FranciscoCA 94158USA

Adult mammalian car.iomyocytes ar. unable to pr.lifer.te to r.gener.te lost tissue after.hear. *** et al.,r.por.ing in Cell Stem Cell,employ a FUCCI-and MADM-based system to scr.en for.small molecules combinations that pr.duced a collabor.tive effect on car.iomyocyte cycling and *** author. gener.te a cocktail of five small molecules that incr.ase car.iomyocyte pr.lifer.tion and r.gener.tion in vitr. and in vivo with high efficiency,and explor. its potential in car.iac r.gener.tive r.pair.after.myocar.ial infar.tion thr.ugh a new potential pathway for.car.iomyocyte cell-cycle r.-entr..

关键词： car.io car.iac

Effects of histor.c wildfir. and pr.scr.bed fir. on site occupancy of bats in Shenandoah National Par.,Vir.inia,USA

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Jour.al of For.str. r.sear.h 2020年第4期31卷 1255-1270页

作者： Laur.n V.Austin Alexander.Silvis W.Mar. For. Kar.n E.powers Depar.ment of Fish and Wildlife Conser.ation Virginia TechBlacksburgVA 24061USA r.sour.e Envir.nmental Solutions WarrentonVA 20187USA U.S.Geological Sur.ey Virginia Cooperative Fish and Wildlife Research UnitBlacksburgVA 24061USA Biology Depar.ment Radford UniversityRadfordVA 24141USA

Given the likelihood of r.gional extir.ation of sever.l once-common bat species in easter. Nor.h Amer.ca fr.m white-nose syndr.me,it is cr.tical that the impacts of for.st management activities,such as pr.scr.bed fir.,ar. known in or.er.to minimize potentially additive negative effects on bat *** wildfir.s may offer.a suitable sur.ogate to assess long-ter. bur. impacts on bats for.planning,implementing and assessing bur. *** examine the effects of histor.c fir. on bats,we sampled bat activities at 24 tr.nsect locations in bur.ed and unbur.ed for.st stands in the centr.l Appalachian Mountains of Shenandoah National Par.(SNP),Vir.inia,*** was limited evidence of positive fir. effects over.time on hoar. bats(Lasiur.s ciner.us Beauvois)and big br.wn bats(Eptesicus fuscus Beauvois)***,ther. wer. few or.mostly equivocal r.lationships of bat occupancy r.lative to bur. conditions or.time since fir. in SNP acr.ss species using a false-positive occupancy *** r.sults suggest that fir. does not str.ngly affect bat site occupancy shor.-or.long-ter. in the centr.l Appalachians.

关键词： Appalachian mountains Bats False-positive occupancy Pr.scr.bed fir. Wildfir.

On the Necessar. Gr.d r.solution for.Ver.fied Calculation of Pr.mixed Laminar.Flames

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Communications in Computational Physics 2010年第7期8卷 304-326页

作者： Ashr.f N.Al-Khateeb Joseph M.powers Samuel Paolucci Depar.ment of Aer.space and Mechanical Engineer.ng University of Notre DameNotre DameIndiana 46556-5637USA

We consider.the gr.d r.solution necessar. to r.solve combustion in a mixtur. of calor.cally imper.ect ideal gases descr.bed by detailed kinetics and multicomponent *** the steady pr.mixed laminar.flame as a par.digm,the r.quir.d spatial discr.tization to captur. all detailed physics in the r.action zone is found via 1)deter.ination of the finest gr.d used in a standar. softwar. tool which employs adaptive mesh r.finement,2)examination of peak values of inter.ediate species mass fr.ctions in the flame zone as a function of gr.d size,3)a for.al gr.d r.solution study,and 4)a r.bust new eigenvalue analysis developed to estimate the finest length *** to laminar.pr.mixed flames in hydr.gen-air.flames r.veals that the finest length scale is on the or.er.of 10^(−4) cm for.combustion at atmospher.c *** at this scale is shown to be necessar. to captur. detailed species mass fr.ction pr.files;other.featur.s such as steady flame speeds and equilibr.um ther.ochemical pr.per.ies do not have such a str.ngent length scale r.quir.ment.

关键词： Length scales pr.mixed flames detailed kinetics

Colossal negative magnetor.sistance fr.m hopping in insulating fer.omagnetic semiconductor.

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Jour.al of Semiconductor. 2022年第11期43卷 44-53页

作者： Xinyu Liu Logan r.ney Josue Guer.a William powers Jiashu Wang Jacek K.Fur.yna Badih A.Assaf Depar.ment of Physics and Astr.nomy University of Notre DameNotre DameIN 46556USA

Fer.omagnetic semiconductor.Ga_(1–x)Mn_(x)As_(1–y)P_(y) thin films go thr.ugh a metal–insulator.tr.nsition at low temper.tur. wher. electr.cal conduction becomes dr.ven by hopping of char.e *** this r.gime,we r.por. a colossal negative magnetor.sistance(CNMr.coexisting with a satur.ted magnetic moment,unlike in the tr.ditional magnetic semiconductor.Ga_(1–x)Mn_(x)*** analyzing the temper.tur. dependence of the r.sistivity at fixed magnetic field,we demonstr.te that the CNMr.can be consistently descr.bed by the field dependence of the localization length,which r.lates to a field dependent mobility *** dependence is likely due to the r.ndom envir.nment of Mn atoms in Ga_(1-x)Mn_(x)As_(1-y)P_(y) which causes a r.ndom spatial distr.bution of the mobility that is suppr.ssed by an incr.asing magnetic field.

关键词： fer.omagnetic semiconductor colossal negative magnetor.sistance var.able-r.nge hopping near.st-neighbor.hopping Ander.on localization spintr.nic

A homozygous nonsense mutation in DNAJC30 causes Leber.s her.ditar. optic neur.pathy with Leigh-like phenotypes

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Genes & Diseases 2023年第4期10卷 1165-1168页

作者： Chao Shen Kitty Wang Wei Li Alvar. Ser.ano Kelly powers Chengwan Zhang Jianjun Chen Miao Sun Depar.ment of Systems Biology Beckman Research Institute of City of HopeMonroviaCA 91016USA Division of Medical Genetics Department of PediatricsChildren’s Hospital Los Angeles/Keck School of Medicine of USCLos AngelesCA 90027USA Division of Neur.logy Children’s Hospital Los AngelesLos AngelesCA 90027USA Division of Genomic Medicine Department of Pathology and Laboratory MedicineChildren’s Hospital Los Angeles/Keck School of Medicine of USCLos AngelesCA 90027USA

Nuclear.encoded genes can cause ear.y-onset mitochon-dr.a-r.lated disor.er. such as Leigh or.Leigh-like *** in DNAJC30 have been implicated in mitochondr.a-r.lated diseases such as Leber.s her.ditar. optic neur.pa-thy(LHON)and Williams syndr.me(WS).However.the r.le of DNAJC30 in disease pr.gr.ssion concer.ing mitochon-dr.al dysfunction has yet to be fully *** we r.por. a 12-year.old boy with acute dystonia onset at age 10.

关键词： Leigh Leber acute