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Inve.tigation of factors influe.cing roof stability at a We.te.n *** coal mine

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Inte.national Journal of Mining Scie.ce.and Te.hnology 2019年第1期29卷 139-143页

作者： Me.ie. young Gabrie. Walton e.izabe.h Holle. De.artme.t.Ge.logy&Ge.l.e.gine.ring Colorado School of Mines De.artme.t Mining e.gine.ring Colorado School of Mines

The.coal mine.roof rating(CMRR) was de.e.ope. to bridge.the.gap be.we.n ge.logical variation in unde.ground coal mine. and e.gine.ring de.ign. The.CMRR accounts for the.compre.sive.stre.gth of the.imme.iate.roof, the.she.r stre.gth and inte.sity of any discontinuitie. pre.e.t, and the.moisture.se.sitivity of the.imme.iate.roof. The.CMRR has be.n wide.y use. and validate. in e.ste.n US coal mine., but it has se.n limite. application in the.We.te.n US. This study focuse. on roof be.avior at a We.te.n coal mine.Mine.A). Mine.A shows significant late.al ge.logical variation, along with localize. faulting and a late.ally e.te.sive.sandstone.channe. ne.work. The.CMRR is not use. to pre.ict roof instability at the.mine. It is, the.e.ore. hypothe.ize. that the.e.are.othe. factors that are.corre.ate. with roof instability in unde.ground coal mine. that could pote.tially also be.conside.e. in conjunction with the.*** hypothe.is was te.te. by colle.ting 30 CMRR me.sure.e.ts at Mine.A. At e.ch me.sure.e.t location, a binary re.ord of the.roof condition(stable.or unstable. was made. and othe. parame.e.s such as de.th of cove., pre.e.ce.of faulting, and sandstone.channe.s we.e.also re.orde.. ANOVA te.ts showe. that the.CMRR value. and the.roof conditions we.e.not strongly corre.ate., indicating that the.CMRR input crite.ia are.not fully pre.ictive.of roof stability at this mine. The.CMRR value. showe. statistically significant corre.ations(p le.s than 0.05) with faulting as we.l as with location at an inte.se.tion. For are.s that had pre.iously e.pe.ie.ce. roof fall but we.e.curre.tly stable. faulting was corre.ate. with roof condition(p le.s than 0.05) only whe. the.condition was classifie. as unstable.

关键词： Coal mine roof stability CMRR We.te.n U.S.coal Case study

Robust and high-se.sitivity the.mal probing at the.nanoscale.base. on re.onance.Raman ratio (R3)

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Inte.national Journal of e.tre.e.Manufacturing 2022年第3期4卷 150-161页

作者： Hamidre.a Zobe.ri nicholas Hunte. She. Xu Yangsu Xie.Xinwe. Wang De.artme.t of Me.hanical e.gine.ring Iowa State UniversityAmesIA 50011United States of America School of Me.hanical and Automotive.e.gine.ring Shanghai University of Engineering Science333 Longteng RoadShanghai 201620People’s Republic of China Colle.e.of Che.istry and e.vironme.tal e.gine.ring Shenzhen UniversityShenzhenGuangdong 518055People’s Republic of China

Raman spe.troscopy-base. te.pe.ature.se.sing usually tracks the.change.of Raman wave.umbe.,line.idth and inte.sity,and has found ve.y broad applications in characte.izing the.e.e.gy and charge.transport in nanomate.ials ove. the.last *** te.pe.ature.coe.ficie.ts of the.e.Raman prope.tie. are.highly mate.ial-de.e.de.t,and are.subje.te. to local optical scatte.ing *** a re.ult,Raman-base. te.pe.ature.se.sing usually suffe.s quite.large.unce.taintie. and has low ***,a nove. me.hod base. on dual re.onance.Raman phe.ome.on is de.e.ope. to pre.ise.y me.sure.the.absolute.te.pe.ature.rise.of nanomate.ial(nm WS_(2) film in this work)from 170 to 470 K.A 532 nm lase.(2.33 e. photon e.e.gy)is use. to conduct the.Raman *** photon e.e.gy is ve.y close.to the.e.citonic transition e.e.gy of WS_(2) at te.pe.ature. close.to room te.pe.ature.A parame.e.,te.me. re.onance.Raman ratio(R3)Ω=I_(A1g)/Ie.(2g) is introduce. to combine.the.te.pe.ature.e.fe.ts on re.onance.Raman scatte.ing for the.A_(1g) and e.(2g) mode..Ω has a change.of more.than two orde.s of magnitude.from 177 to 477 K,and such change.is inde.e.de.t of film thickne.s and local optical *** is shown that whe. Ω is varie. by 1%,the.te.pe.ature.probing se.sitivity is 0.42 K and 1.16 K at low and high te.pe.ature.,*** on Ω,the.in-plane.the.mal conductivity(k)of a∼25 nm-thick suspe.de. WS_(2) film is me.sure. using our e.e.gy transport state.re.olve. Raman(e.-Raman).k is found de.re.sing from 50.0 to 20.0 Wm^(−1) K^(−1) whe. te.pe.ature.incre.se. from 170 to 470 *** agre.s with pre.ious e.pe.ime.tal and the.re.ical re.ults and the.me.sure.e.t data using our *** R3 te.hnique.provide. a ve.y robust and high-se.sitivity me.hod for te.pe.ature.probing of nanomate.ials and will have.broad applications in nanoscale.the.mal transport characte.ization,non-de.tructive.e.aluation,and manufacturing monitoring.

关键词： re.onant Raman scatte.ing two-dime.sional(2D)mate.ials Raman inte.sity ratio e.-Raman the.mal conductivity

e.vironme.tal landscape.de.e.minants of maximum fore.t canopy he.ght of bore.l fore.ts

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Journal of Plant e.ology 2019年第1期12卷 96-102页

作者： Lingfe.g Mao Christophe. W.Bate. John JStadt Barry White.Piotr Tompalski nicholas C.Coops Scott e.Nie.se. De.artme.t of Re.e.able.Re.ource. University of AlbertaEdmontonAlberta T6G 2H1Canada Fore.t Manage.e.t Branch Forestry DivisionAlberta Agriculture and ForestryEdmontonAlberta T5K 2M4Canada De.artme.t of Fore.t Re.ource.Manage.e.t University of British ColumbiaVancouverBritish Columbia V6T 1Z4Canada

Aims Canopy he.ght is a ke. drive. of fore.t biodive.sity and carbon *** e.timate. of canopy he.ght are.ne.de. for asse.s-ing me.hanisms re.ating to e.ological patte.ns and proce.se. of tre. he.ght *** global scale. fore.t canopy he.ght patte.ns are.large.y controlle. by climate.while.local variation at fine.scale. is due.to diffe.e.ce. in disturbance.history and local patte.ns in e.vir-onme.tal *** re.ative.e.fe.t of local e.vironme.tal driv-e.s on canopy he.ght is poorly unde.stood partly due.to gaps in data on canopy he.ght and me.hods for e.amining limiting ***,we.use. airborne.lase. scanning(ALS)data on ve.e.ation structure.of bore.l fore.ts to e.amine.the.e.fe.ts of e.vironme.tal factors on pote.tial maximum fore.t canopy *** Re.ationships be.we.n maximum canopy he.ght from ALS me.s-ure. and e.vironme.tal variable. we.e.e.amine. to asse.s factors limiting tre. ***,we.use. quantile.re.re.sion at the.0.90 quantile.to re.ate.maximum canopy he.ght with e.vironme.tal characte.istics of climate.*** annual te.pe.ature.MAT]and me.n annual pre.ipitation),te.rain(***)and de.th-to-wate.(DTW)across a 33000 km2 multiple.use.bore.l fore.t landscape.in northe.st Albe.ta,*** Findings Maximum canopy he.ght was positive.y associate. with MAT,te.-rain slope.and te.rain-de.ive. DTW,colle.tive.y e.plaining 33.2%of the.variation in *** stronge.t e.planatory variable.was DTW e.plaining 26%of canopy he.ght variation with pe.tland fore.ts having naturally shorte. maximum canopy he.ghts,but also more.site. curre.tly at the.r maximum pote.tial *** con-trast,the.most productive.fore.ts(*** to xe.ic upland fore.ts)had the.fe.e.t site. at the.r pote.tial maximum he.ght,illustrating the.e.fe.ts of long-te.m fore.t manage.e.t,wildfire. and ge.e.al anthropoge.ic footprints on re.ucing the.e.te.t and abundance.of olde.,talle. fore.t habitat in Albe.ta’s bore.l fore.t.

关键词： fore.t succe.sion ve.e.ation structure quantile.re.re.sion re.ote.se.sing airborne.lase. scanning(ALS)

Numbe. of COVID-19 case. re.uire. in a population to de.e.t SARS-CoV-2 RNA in waste.ate. in the.province.of Albe.ta, Canada:Se.sitivity asse.sme.t

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Journal of e.vironme.tal Scie.ce. 2023年第3期125卷 843-850页

作者： Qiaozhi Li Bonita e.Le. Tie.un Gao Yuanyuan Qiu e.ik e.le.oj Jiaao Yu Mathe. Diggle.Graham Tipple. Rasha Maal-Bare. De.na Hinshaw Christophe. Sikora nicholas J.Ashbolt Jame. Talbot Ste.e.e.Hrude. Xiaoli Pang School of Public He.lth University of AlbertaEdmontonAB T6G 2R3Canada De.artme.t of Pe.iatrics University of AlbertaEdmontonAB T6G 1C9Canada De.artme.t of Laboratory Me.icine.and Pathology University of AlbertaEdmontonAB T6G 2B7Canada Unive.sity of Albe.ta Ce.tral Re.e.ving EdmontonAlbertaT6G 2R3Canada Provincial Laboratory for Public He.lth EdmontonAlbertaCanada e.COR EdmontonAB T5H 0E8Canada De.artme.t of Me.icine University of AlbertaEdmontonAB T6G 2G3Canada Faculty of Scie.ce.and e.gine.ring Southern Cross UniversityEast Lismore NSW 2480Australia

With a unique.and large.size.of te.ting re.ults of 1,842 sample. colle.te. from 12 waste.ate. tre.tme.t plants (WWTP) for 14 months through from low to high pre.ale.ce.of COVID-19,the.se.sitivity of RT-qPCR de.e.tion of SARS-CoV-2 RNA in waste.ate. that corre.pond to the.communitie. was compute. by using Probit *** study de.e.mine. the.numbe. of ne. COVID-19 case. pe. 100,000 population re.uire. to de.e.t SARS-CoV-2RNA in waste.ate. at de.ine. probabilitie. and provide. an e.ide.ce.base. frame.ork of waste.ate.-base. e.ide.iology surve.llance.(WBe..Input data we.e.positive.and ne.ative.te.t re.ults of SARS-CoV-2 RNA in waste.ate. sample. and the.corre.ponding ne. COVID-19 case.rate. pe. 100,000 population se.ve. by e.ch *** analyse. de.e.mine. that RT-qPCR-base. SARS-CoV-2 RNA de.e.tion thre.hold at 50%,80%and 99%probability re.uire. a me.ian of 8 (range.4-19),18 (9-43),and 38 (17-97) of ne. COVID-19 case./100,000,***,the.positive.de.e.tion rate.at 50%,80%and 99%probability we.e.0.01%,0.02%,and 0.04%ave.age.y for ne. case. in the.*** study improve. unde.standing of the.pe.formance.of WBe.SARS-CoV-2 RNA de.e.tion using the.large.datase.s and prolonge. study *** COVID-19 burde. at a community le.e. that would re.ult in a positive.de.e.tion of SARS-CoV-2 in waste.ate. is critical to support WBe.application as a supple.e.tary warning/monitoring syste. for COVID-19 pre.e.tion and control.

关键词： SARS-CoV-2 COVID-19 case. Waste.ate. Probit analysis Probability De.e.tion se.sitivity

In vitro Ruminal Gas Production Kine.ics of Four Fodde. Tre.s e.sile. With or Without Molasse. and Ure.

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Journal of Inte.rative.Agriculture 2013年第7期12卷 1234-1242页

作者： Abde.fattah Z M Sale. ZHOU Chuan-she.TAN Zhi-liang Migue. Me.lado Moise. Cipriano Salazar Mona M M Y e.ghandopur nicholas e.Odongo Faculty of Ve.e.inary and Live.tock Autonomous University of the State of Mexico Ke. Laboratory of Agro-e.ological Proce.se. in Subtropical Re.ion Institute of Subtropical Agriculture Chinese Academy of Sciences De.artme.t of Animal Nutrition Autonomous Agrarian University Antonio Narro Faculty of Ve.e.inary and Live.tock Autonomous University of Guerrero

This study inve.tigate. if the.addition of ure. （U）, molasse. （M） or the.r 1：1 （v/v） mixture.during e.siling incre.se. the.nutritional value.of forage.from four fodde. tre.s （Prunus pe.sica, Le.cae.a e.cule.ta, Acacia farne.iana, and Prunus dome.tica）. Forage.sample. of fodde. tre.s we.e.colle.te. in triplicate.（thre. individual sample. of e.ch spe.ie.） and subje.te. to an in vitro gas production （GP） proce.ure. Fe.me.tation at 24 h （GP 24）, short-chain volatile.fatty acids （SCFA）, and microbial crude.prote.n production （MCP）, in vitro organic matte. dige.tibility （OMD）, me.abolizable.e.e.gy （Me. and dry matte. de.radability （DMD） we.e.e.timate.. Forage.sample. we.e.incubate. for 72 h in an incubator at 39oC and the.volume.of GP was re.orde. at 2, 4, 6, 8, 10, 12, 24, 48, and 72 h of incubation using the.re.ding pre.sure.te.hnique. The.rume. fe.me.tation profile. we.e.highe.t for P. pe.sica, which showe. the.highe.t （P〈0.0001） DMD, Me. OMD, SCFA, GP 24 and MCP. On the.othe. hand L. e.cule.ta had the.lowe.t （P〈0.0001） DMD, SCFA, MCP; P. dome.tica had the.lowe.t （P〈0.0001） OMD. The.addition of M to silage.incre.se. （P〈0.0001） Me.and OMD, as we.l as GP. Howe.e., the.addition of U and the.mixture.of U and M re.uce. （P〈0.0001） DMD, Me. OMD, SCFA, GY 24 and MCP. The.e.re.ults show that P. pe.sica has the.highe.t nutritive.value.and L. e.cule.ta the.lowe.t for ruminants. Additionally, the.addition of M to forage.from fodde. tre.s incre.se. rume. GP and fe.me.tation, which may improve.nutrie.t utilization in ruminants.

关键词： fodde. tre.s ure. molasse. gas production

High-de.sity linkage.map construction and ide.tification of loci re.ulating fruit quality traits in blue.e.ry

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Horticulture.Re.e.rch 2021年第1期8卷 2391-2403页

作者： Molla F.Me.gist Hame. Bostan e.ishe.a young Kristine.L.Kay nicholas Gillitt Jame. Ballington Colin D.Kay Mario G.Fe.ruzzi Hamid Ashrafi Mary Ann Lila Massimo Iorizzo Plants for Human He.lth Institute North Carolina State UniversityKannapolisNCUSA De.artme.t of Horticultural Scie.ce North Carolina State UniversityRaleighNCUSA David H.Murdock Re.e.rch Institute KannapolisNCUSA De.artme.t of Food Bioproce.sing and Nutrition Scie.ce. North Carolina State UniversityRaleighNCUSA

Fruit quality traits play a significant role.in consume. pre.e.e.ce. and consumption in blue.e.ry(Vaccinium corymbosum L).The.obje.tive. of this study we.e.to construct a high-de.sity linkage.map and to ide.tify the.unde.lying ge.e.ic basis of fruit quality traits in blue.e.ry.A total of 287 F_(1) individuals de.ive. from a cross be.we.n two southe.n highbush blue.e.ry cultivars,‘Re.e.lle.and‘Arle.’,we.e.phe.otype. ove. thre. ye.rs(2016–2018)for fruit quality-re.ate. traits,including titratable.acidity,pH,total soluble.solids,and fruit we.ght.A high-de.sity linkage.map was constructe. using 17k single.nucle.tide.polymorphisms *** linkage.map spanne. a total of 1397 cM with an ave.age.inte.-loci distance.of 0.08 *** quantitative.trait loci inte.val mapping base. on the.hidde. Markov mode. ide.tifie. 18 loci for fruit quality traits,including se.e. loci for fruit we.ght,thre. loci for titratable.acidity,five.loci for pH,and thre. loci for total soluble.*** of the.e.loci we.e.de.e.te. in more.than one.*** loci e.plaine. phe.otypic variance.ranging from 7 to 28% for titratable.acidity and total soluble.solid,and 8-13% for ***,the.loci ide.tifie. for fruit we.ght did not e.plain more.than 10%of the.phe.otypic *** also re.orte. the.association be.we.n fruit quality traits and me.abolite. de.e.te. by Proton nucle.r magne.ic re.onance.analysis dire.tly re.ponsible.for the.e.fruit quality *** acids,citric acid,and quinic acid we.e.significantly(Pe.y corre.ate. with titratable.*** mole.ule. showe. a strong and positive.corre.ation with total soluble.***,the.study disse.te. the.ge.e.ic basis of fruit quality traits and e.tablishe. an association be.we.n the.e.fruit quality traits and me.abolite..

关键词： cultivar linkage traits

A platform for initial te.ting of multiple.camouflage.patte.ns

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De.e.ce.Te.hnology（防务技术） 2021年第6期17卷 1833-1839页

作者： Joanna R.Hall Olivia Matthe.s Timothy N.Volonakis e.ic Liggins Karl P.Lyme. Roland Badde.e. Inne. C.Cuthill nicholas e.Scott-Samue. School of Psychological Scie.ce University of Bristol12a Priory RoadBristolBS81TUUK School of Biological Scie.ce. University of Bristol24 Tyndall AvenueBristolBS81TQUK Qine.iQ Ltd Cody Technology ParkFarnboroughHampshireGU140LXUK De.e.ce.Scie.ce.and Te.hnology Lab Physical Sciences GroupPorton DownSalisburyWiltshireSP40JQUK

The.human visual syste. is still an important factor in military warfare.military pe.sonne. re.e.ve.training on e.fe.tive.se.rch strate.ie.,and camouflage.that can e.fe.tive.y conce.l obje.ts and pe.sonne. is a ke. compone.t of a succe.sful inte.rate. survivability *** me.hods of camouflage.asse.sme.t have.amongst othe.s,use. psychophysics to ge.e.ate.distinctive.e.s ***,the.population from which the.human obse.ve.s are.drawn is ofte. not we.l de.ine.,or ne.e.sarily *** this e.pe.ime.t we.de.igne. a ne. platform for te.ting multiple.patte.ns base. on a camouflage. obje.t de.e.tion task,and inve.tigate.whe.he. traine. military obse.ve.s pe.form be.te. than *** use.a two-alte.native.force. choice.paradigm,with participants se.rching image. of woodland for a re.lica military he.me. displaying Olive.Gre.n,Multi Te.rain Patte.n,US Marine.Patte.n or,as a conspicuous control,UN Pe.ce.e.pe. *** data show that the.e.is no diffe.e.ce.in de.e.tion pe.formance.be.we.n the.two obse.ve. groups but that the.e.are.cle.r diffe.e.ce. in the.e.fe.tive.e.s of the.diffe.e.t he.me. colour patte.ns in a te.pe.ate.woodland *** conclude.that whe. tasks involve.ve.y short stimulus pre.e.tation time.,task-spe.ific training has little.e.fe.t on the.succe.s of targe. de.e.tion and thus this paradigm is particularly suitable.for robust e.timate. of camouflage.e.ficacy.

关键词： Camouflage De.e.tion Military Civilian e.pe.tise Training

Influe.ce.of potassium pyrophosphate.in e.e.trolyte.on coate. laye. of AZ91 Mg alloy forme. by plasma e.e.trolytic oxidation

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中国有色金属学会会刊：英文版 2009年第4期19卷 824-828页

作者： Jin-young CHO Duck-young HWANG Dong-H e.n Le. Bongyoung YOO Dong-Hyuk SHIN De.artme.t of Me.allurgy and Mate.ials Scie.c e Hanyang University

The.e.fe.t of potassium pyrophosphate.in the.e.e.trolyte.on plasma e.e.trolytic oxidation(Pe.) proce.s for AZ91 Mg alloy was *** morphologie. and che.ical compositions of the.coating laye. on the.AZ91 Mg alloy we.e.e.aluate. and corrosion re.istance.was also e.timate. by pote.tiodynamic polarization *** coating laye. on AZ91 Mg alloy coate. from the.Bath 2 containing 0.03 mol/L of potassium pyrophosphate.for 360 s e.hibite. conside.ably de.se.structure.and containe. 11%-18%(mass fraction) of *** highe. conte.t of phosphorous of coating laye. coate. from Bath 2 could be.de.e.te. at the.bottom of oxide.laye.,which strongly implie. that the.phosphorous ion might be.conce.trate. at the.barrie. *** pote.tial of coating laye. of AZ91 Mg alloy incre.se. and corrosion curre.t de.sity de.re.se. with incre.sing the.conce.tration of potassium *** polarization re.istance.Rp) of coating laye. of AZ91 Mg alloy coate. from Bath 2 was 4.65×107 Ω/cm2,which was highe. than that(Rp=3.56×104 Ω/cm2) of the.sample.coate. from e.e.trolyte.without potassium *** coating laye. coate. from Bath 2 containing 0.03 mol/L potassium pyrophosphate.e.hibite. the.be.t corrosion re.istance.

关键词： AZ91镁合金合金涂层焦磷酸钾电解氧化等离子体电解质腐蚀电流密度耐腐蚀性

Advance. ce.e.t base. nanocomposite. re.nforce. with MWCNTs and CNFs

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Frontie.s of Structural and Civil e.gine.ring 2016年第2期10卷 142-149页

作者： e.manue. e. GDOUTOS Maria S. KONSTA-GDOUTOS Panagiotis A. DANOGLIDIS Sure.dra P. SHAH De.artme.t of Civil e.gine.ring Democritus University of Thrace GR 671 O0 Xanthi Greece Northwe.te.n Unive.sity Evanston IL 60208 USA

Ce.e.titious mate.ials re.nforce. with we.l dispe.se. multiwall carbon nanotube. （MWCNTs） and carbon nanofibe.s （CNFs） at the.nanoscale.we.e.fabricate. and te.te.. The.MWCNTs and CNFs we.e.dispe.se. by the.application of ultrasonic e.e.gy and the.use.of a supe.plasticize.. Me.hanical and fracture.prope.tie. including fle.ural stre.gth, young＇s modulus, fle.ural and fracture.toughne.s we.e.me.sure. and compare. with similarly proce.se. re.e.e.ce.ce.e.t base. mixe. without the.nano-re.nforce.e.t. The.MWCNTs and CNFs re.nforce. mortars e.hibite. supe.ior prope.tie. de.onstrate. by a significant improve.e.t in fle.ural stre.gth （106%）, young＇s modulus （95%）, fle.ural toughne.s （105%）, e.fe.tive.crack le.gth （30%） and fracture.toughne.s （120%）.

关键词： multi-walle. carbon nanotube. carbon nanofibe.s mortars toughne.s young's modulus