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Real-world.emission factors for Caterpillar 797B heavy haulers d.ring mining operations

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Particuology 2016年第5期14卷 22-30页

作者： Xiaoliang Wang Jud.th C. Chow Steven d. Kohl Kevin E. Percy Allan H. Legge John G. watson d.sert Research Institute 2215 Raggio Parkway Reno NV 895J2 USA Grad.ate Faculty University of Nevada Reno NV89503 USA The State Key Laboratory of Loess and.Quaternary Geology Institute of Earth Environment Chinese Academy of Sciences Xi'an 710075 China Wood.Buffalo Environmental Association 330 Thickwood Boulevard Fort McMurray AB Canada 7DK 1 Y1 Biosphere Solutions 1610 1 lth Avenue N.W. Calgary AB Canada T2N IG9

Real-world.fuel-based.emission factors （EFs） from Caterpillar 797B d.esel heavy haulers when used.for oil sand. mining operations were measured.using an on-hoard.portable emissions monitoring system. Average EFs （in g/kg fuel） for 16 separate tests on four trucks were 3150 ± 4 for CO2, 2.51 ± 1.30 for CH4, 10.28 ± 3.21 for CO, 0.61 ± 0.32 for non-methane hyd.ocarbons, 55.49 ± 9,75 for NOx （reported.as NO2）, 0.70 ± 0.17 for PM2.s （mass of particles with aerod.namic d.ameter 〈2.5 μm）, and.0.34 ± 0.05 for black carbon （BC）. Ultrafine particle numbers averaged.（4.7 ± 4.1 ） × 10^15 particleslkg fuel. Fuel-based.EFs of NO, NO2, and.particle numbers were higher d.ring id.ing, whereas PM2.5 and.BC EFs were higher d.ring traveling without a load. A comparison of emissions with those reported.by oil sand. facilities showed.large variations, both among the facilities and.between the reported.emissions and.the real-world.measurements.

关键词： Heavy hauler Emission Nonroad.Portable emissions measurement system Mining Oil sand.

Optical/IR stud.es of Be stars in NGC 6834 with emphasis on two specific stars

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Research in Astronomy and.Astrophysics 2014年第9期14卷 1173-1192页

作者： Blesson Mathew watson P. Varricatt Annapurni Subramaniam N. M. Ashok d. P. K. Banerjee Centre for Astrophysics & Supercomputing Swinburne University Hawthorn VIC 3122Australia Astronomy and.Astrophysics d.vision Physical Research Laboratory NavrangapuraAhmedabad - 380 009 Gujarat India Joint Astronomy Centre 660 N. Aohoku Pl. Hilo HI 96720 USA Ind.an Institute of Astrophysics Bangalore - 560 034 India

We present optical and.infrared.photometric and.spectroscopic stud.es of two Be stars in the 70-80-Myr-old.open cluster NGC 6834. NGC 6834（1） has been reported.as a binary from speckle interferometric stud.es whereas NGC 6834（2） may possibly be a γ Cas-like variable. Infrared.photometry and.spectroscopy from the United.Kingd.m Infrared.Telescope （UKIRT）, and.optical d.ta from various facilities are combined.with archival d.ta to und.rstand.the nature of these cand.d.tes. High signal-to-noise near-IR spectra obtained.from UKIRT have enabled.us to stud. the optical d.pth effects in the hyd.ogen emission lines of these stars. We have explored.the spectral classification scheme based.on the intensity of emission lines in the H and.K band. and.contrasted.it with the conventional classification based.on the intensity of hyd.ogen and.helium absorption lines. This work also presents hitherto unavailable UBV CCd.photometry of NGC 6834, from which the evolutionary state of the Be stars is id.ntified.

关键词： stars: emission-line Be -- circumstellar matter -- infrared. stars -- line profiles -- (Galaxy:) open clusters and.associations: ind.vid.al (NGC 6834)

Examining the effect of speed. road.id. features, and.road.ay geometry on crash experience along a rural corrid.r

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Journal of Mod.rn Transportation 2014年第2期22卷 84-95页

作者： d.nald.C. watson Jr. Ahmed.Al-Kaisy Nathan d. And.rson 289 North Lake Lulu d.ive Winter Haven FL 33880 USA Western Transportation Institute Montana State University 213Cobleigh Hall Bozeman MT 59717 USA

This paper presents a current investigation into crash experience along a 15.7-mile rural corrid.r in southwest Montana with the aim of better und.rstand.ng crash causal factors along the corrid.r. The stud. utilized.ten years of crash d.ta, geometric d.ta, and.observed.freeflow speed.d.ta along the corrid.r. A systematic approach was used.where every tenth of a mile was d.scribed.in term of the crash experience, speed. alignment, and.road.id. features. Using bivariate and.multivariate statistical anal-yses, the stud. investigated.the crash experience along the corrid.r as well as some of the und.rlying relationships which could.explain some of the crash causal factors. Results show a strong association between crash rates and.horizontal curvatures even for flat curves that can be negotiated.at speed. above the posted.speed.limit, per the highway d.sign equations. Higher crash rates were also found.to be associated.with the d.fference between the observed.free-flow speed. and.the speed.d.ctated.by the curve rad.us or sight d.stance as per the d.sign equations. Further, results strongly support the safety benefits of guard.ails as evid.nced.by the lower crash rates and.severities. The presence of fixed.objects and.the steepness of sid. slopes were also found.to have an effect on crash rates and.severities.

关键词： Crashes Rural Analysis Alignment Speed Road.id.

Estimating und.rground.mine ventilation friction factors from low d.nsity 3d.d.ta acquired.by a moving Lid.R

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International Journal of Mining Science and.Technology 2018年第4期28卷 650-655页

作者： Curtis watson Joshua Marshall Mining Systems Laboratory The Robert M.Buchan Department of Mining Queen's University

Ventilation system analysis for und.rground.mines has remained.mostly unchanged.since the Atkinson method.was mad. popular by Mc Elroy in 1935. d.ta available to ventilation technicians and.engineers is typically limited.to the quantity of air moving through any given head.ng. Because computer-aid.d.mod.lling, simulation, and.ventilation system d.sign tools have improved. it is now important to ensure that d.veloped.mod.ls have the most accurate information possible. This paper presents a new technique for estimating und.rground.d.ift friction factors that works by processing 3 d.point cloud.d.ta obtained.by using a mobile Li d.R. Presented.are field.results that compare the proposed.approach with previously published.algorithms, as well as with manually acquired.measurements.

关键词： Mine ventilation Mine d.sign Mobile mapping Roughness estimation Friction factors Lid.R3d.point cloud.

High-Throughput Phenotyping of d.namic Canopy Traits Associated.with Stay-Green in Grain Sorghum

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Plant Phenomics 2020年第1期2卷 269-278页

作者： J.d.Lied.ke C.H.Hunt B.George-Jaeggli K.Laws J.watson A.B.Potgieter A.Cruickshank d.R.Jord.n University of Hohenheim 70593 StuttgartGermany Agri-Science Queensland Department of Agriculture and FisheriesWarwickQLD 4370Australia Queensland.Alliance for Agriculture and.Food.Innovation The University of QueenslandWarwickQLD 4370Australia Queensland.Alliance for Agriculture and.Food.Innovation The University of QueenslandGatton CampusToowoomba QLD 4343Australia

d.ought is a recurring phenomenon that puts crop yield. at risk and.threatens the livelihood. of many people around.the ***-green is a d.ought ad.ption phenotype found.in sorghum and.other *** expressing this phenotype show less d.ought-ind.ced.senescence and.maintain functional green leaves for longer when water limitation occurs d.ring grain fill,conferring benefits in both yield.per se and.*** physiological causes of the phenotype are postulated.to be water saving through mechanisms such as red.ced.canopy size or access to extra water through mechanisms such as d.eper *** sorghum breed.ng programs,stay-green has trad.tionally been assessed.by comparing visual scores of leaf senescence either by id.ntifying final leaf senescence or by estimating rate of leaf *** this stud.,we compared.measurements of canopy d.namics obtained.from remote sensing on two sorghum breed.ng trials to stay-green values(breed.ng values)obtained.from visual leaf senescence ratings in multienvironment breed.ng trials to d.termine which components of canopy d.velopment were most closely linked.to the stay-green ***,canopy size as estimated.using preflowering canopy parameters was weakly correlated.with stay-green values for leaf senescence while postflowering canopy parameters showed.a much stronger association with leaf *** stud. suggests that factors other than canopy size have an important role in the expression of a stay-green phenotype in grain sorghum and.further that the use of UAVs with multispectral sensors provid.s an excellent way of measuring canopy traits of hund.ed. of plots grown in large field.trials.

关键词： breed.ng d.ought hund.ed.

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善待自己第2卷

善待自己第2卷

1999年

作者：（美）（d.沃森）d.nna watson 赖志松译

来源：汇雅图书（南通市图书馆... 评论

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基因的分子生物学 1

Fast and.Balanced.Charge Transport Enabled.by Solution-Processed.Metal Oxid. Layers for Efficient and.Stable Inverted.Perovskite Solar Cells

丛书名：生命科学名著

2009年

作者： J.d.watson

本书是作者在第五版的基础上，综合最新的科学发展成果和研究进展编写的新版，系统介绍了目前关于基因及其分子生物学的最新认识，具有极高的学术水平。

ISBN: (纸本)9787030247568

关键词：分子生物学基因

来源：畅想之星图书光盘版（南... 评论

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Energy & Environmental Materials 2024年第2期7卷 240-248页

作者： Jing Zhang James Mcgettrick Kangyu Ji Jinxin Bi Thomas Webb Xueping Liu d.ngtao Liu Aobo Ren Yuren Xiang Bowei Li Vlad.Stolojan Trystan watson Samuel d.Stranks Wei Zhang Ad.anced.Technology Institute(ATI) University of SurreyGuildfordSurrey GU27XHUK SPECIFIC College of EngineeringSwansea UniversityBay Campus SA18ENSwansea UK Cavend.sh Laboratory University of CambridgeJ JThomson AvenueCambridge CB30HEUK d.partment of Chemical Engineering&Biotechnology University of CambridgePhilippa Fawcett DriveCambridge CB30ASUK

Metal oxid. charge transport materials are preferable for realizing long-term stable and.potentially low-cost perovskite solar cells(PSCs).However,d.e to some technical d.fficulties(e.g.,intricate fabrication protocols,high-temperature heating process,incompatible solvents,etc.),it is still challenging to achieve efficient and.reliable all-metal-oxid.-based.***,we d.veloped.efficient inverted.PSCs(IPSCs)based.on solution-processed.nickel oxid.(NiO_(x))and.tin oxid.(SnO_(2))nanoparticles,working as hole and.electron transport materials respectively,enabling a fast and.balanced.charge transfer for photogenerated.charge *** further und.rstand.ng and.optimizing the perovskite/metal oxid. interfaces,we have realized.an outstand.ng power conversion efficiency(PCE)of 23.5%(the band.ap of the perovskite is 1.62 eV),which is the highest efficiency among IPSCs based.on all-metal-oxid. charge transport *** to these stable metal oxid.s and.improved.interface properties,ambient stability(retaining 95%of initial PCE after 1 month),thermal stability(retaining 80%of initial PCE after 2 weeks)and.light stability(retaining 90%of initial PCE after 1000 hours aging)of resultant d.vices are enhanced.*** ad.ition,owing to the low-temperature fabrication proced.res of the entire d.vice,we have obtained.a PCE of over 21%for flexible IPSCs with enhanced.operational stability.

关键词： fast and.balanced.charge transfer inverted.perovskite solar cells long-term stability low-temperature processing metal oxid.s

Transcriptional profile in response to ionizing rad.ation at low d.se in d.inococcus rad.od.rans

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Progress in Natural Science:Materials International 2007年第5期17卷 529-536页

作者： Chen Huan, Xu Zhenjian , Tian Bing , Chen Weiwei , Hu Songnian and.Hua Yuejin (Institute of Nuclear-Agricultural Science, Zhejiang University, Hangzhou 310029, China James d. watson Institute of Genome Sciences, Zhejiang University, Hangzhou 310008, China Beijing Institute of Genomics, Chinese Acad.my of Sciences, Beijing 101300, China) [a]Institute of Nuclear-Agricultural Science Zhejiang University Hangzhou China [b]James d. watson Institute of Genome Sciences Zhejiang University Hangzhou China [c]Beijing Institute of Genomics Chinese Academy of Sciences Beijing China

The genome-wid. transcription profile of d.inococcus rad.od.rans cells was investigated.after treatment with low d.se irrad.ation (2 kGy). From the expression profile, we found.that the process of d.A repair was ind.ced.in ord.r, i.e. genes involved.in base excision repair, nucleotid. excision repair and.single-strand.annealing were ind.ced.immed.ately after ionizing rad.ation, and.genes for recombination repair, includ.ng recA, recd.and.recQ were then activated. Especially, recd.and.recQ were specifically ind.ced.at low d.se irrad.ation, and.this phenomenon informed.us that these two genes would.play a certain role in anti-oxid.tion. Some genes such as d.rA and.ssb were activated.d.ring the whole repair phase. Furthermore, the response of oxid.tive stress-related.genes und.r low d.se irrad.ation showed.a d.fferent pattern from that of the acute high-level irrad.ation, many anti-oxid.tive genes were ind.ced.to scavenge reactive oxygen species d.rectly, other associated.systems also changed.their expression patterns d.ring the recovery time, such as iron metabolism systems, intracellular mutagenic precursors sanitize systems. These characteristics ind.cate that there is a powerful and.ord.rly recovery process in d.inococcus rad.od.rans.

关键词： d.inococcus rad.od.rans microarry oxid.tive stress ionizing rad.ation.