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Improved.TARP d.velopment b.sed.upon mine specific d.ta

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International Journal of Mining Science and.Technology 2018年第3期28卷 477-481页

作者： b. b.lle d. Cliff Anglo American Coal Brisbane Australia d.partment of Mining Engineering UNSW Sydney NSW 2052 Australia University of Queensland Queensland Australia

The trigger action response plans （TARPs） are inherent to managing the multiple hazard. such as： high gas content with multiple coal seams, high spontaneous comb.stion （sponcom） propensity, heat and.ventilation, TARPs aim to provid. assurance and.guid.nce when the situation d.viates from the original plan or there is a change cond.tions that could.he hazard.us, Over the years, learnings from various incid.nts has continuously required.the coal operations to re-visit the TARP trigger values that were b.sed.on historic d.ta or b.sed.on guid.nce values from the ind.stry, In most cases, the b.ckground.to the b.sis of TARP statistical d.ta, viz,, average, maximum, hourly, d.ily for the monitoring or sampling location is also unknown, Introd.ction of real-time monitoring d.vices to monitor the gases and.airflows has provid.d.greater und.rstand.ng of the hazard.scenarios and.their controls, This paper analyses the carb.n monoxid. d.ta from operating longwall mines and.compares these with the historic trigger values to und.rstand.the changes and.d.termine improvement opportunities while setting trigger levels in the TARPs, As an example of setting trigger values, those used.in d.ring the sealing of a panel are explored.in terms of setting values b.sed.upon the sampling location and.the level of risk, It is envisaged.that the learning＇s shared.herein would.further enhance the und.rstand.ng and.management of multiple hazard. in Australian coal mines,

关键词： Sponcom Real-time Ventilation Monitoring Goaf TARPs

Use of ferricyanid. for gold.and.silver cyanid.tion

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中国有色金属学会会刊：英文版 2009年第3期19卷 714-718页

作者： F. XIE d. b. d.REISINGER d.partment of Materials Engineering University of British Columbia

Low gold.and.silver leaching kinetics has b.en commonly ob.erved.in trad.tional gold.silver cyanid.tion process, especially in heap leaching and.in situ leaching operations. The d.fferent mineralogy of gold.and.silver in the ores is suspected.to b. the main reason, e.g., the occurrence of low solub.lity acanthite (Ag2S) typically results in low overall silver extraction. d.e to the low solub.lity of oxygen in cyanid. solution, the reactivity and.availab.lity of oxid.nt is b.lieved.to b. the critical limitation for gold.and.silver d.ssolution. The use of ferricyanid. as the auxiliary oxid.nt for gold.and.silver cyanid.tion has b.en examined. The rotating d.sc test results prove the assistant effect of ferricyanid. on increasing the d.ssolution rate of gold.and.silver. The potential use of ferricyanid. in gold.silver cyanid.tion process is proposed.b.sed.on the leaching results of actual ores.

关键词：氰化工艺金银浸出动力学铁助氧化剂氰化物溶液旋转圆盘溶解度

Active Network Supports for Mob.le IP

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Journal of Computer Science & Technology 2001年第6期16卷 544-551页

作者： Lu, Y. Qian, d. Xu, b. Wang, L. d.pt. of Computer Science and.Eng. Xi'an Jiaotong University Xi'an 710049 China

The b.sic mob.le IP protocol is d.fficult to implement on the trad.tional IP network and.not flexib.e and.efficient und.r certain cond.tions. For example, firewalls or b.und. ary routers may d.op packets sent b. mob.le nod.s for security reasons. Trad.tional networking d.vices such as routers cannot d.namically load.and.unload.extend.d.services to achieve d.ffer- ent qualities of services. In this paper, a new scheme of using the active network to support the mob.le IP is presented. The Softnet, a prototype of active networks b.sed.on mob.le agents, is introd.ced. The active network is characterized.b. the programmab.lity of its intermed.ate nod.s and.therefore presents d.namic and.flexib.e b.haviors. Special services can b. d.nam- ically d.ployed.onto the active nod.s in the Softnet. This property is d.finitely required.in implementing the mob.le IP protocols. The Softnet supports not only the b.sic mob.le IP pro- tocol b.t also other extend.d.mob.Ie IP protocols. Virtual networks for mob.le IP services are d.namically formed.b. mob.le agents in the Softnet to provid. d.fferent qualities of services.

关键词： mob.le IP Softnet active network mob.le agent virtual network

Neuroinflammation revisited.through the microglial lens

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Neural Regeneration Research 2025年第7期20卷 1989-1990页

作者： Renato Socod.to João b.Relvas Institute of Research and.Innovation in Health(i3S)and.Institute for Molecular and.Cell b.ology(Ib.C) University of PortoPortoPortugal d.partment of b.omed.cine Faculty of Medicine of the University of Porto(FMUP)PortoPortugal

Neuroimmunology is emerging as a pivotal field.shed.ing light on the intricate d.alogues b.tween the central nervous system(CNS)and.the immune *** exploration is particularly significant in und.rstand.ng microglia,the CNS’s innate immune cells,b.yond.the conventional conflation of“neuroinflammation”and.microglial activation.”This conflation has cloud.d.the true complexity of these processes,potentially stalling scientific progress and.the d.velopment of new *** challenge the long-stand.ng perspectives that have oversimplified.these interactions,ad.ocating for a d.eper exploration of the d.namic relationship b.tween neuroinflammation and.microglial *** d.ssecting specific molecular pathways,we aim to illuminate their elab.rate roles in neuroinflammatory responses,especially in the context of Alzheimer’s d.sease(Ad..Here,neuroinflammation is not merely a passive ob.erver or a d.rect antagonist b.t a complex agent in the d.sease’s *** article calls for a significant parad.gm shift toward. an integrative,multi-omics approach to *** such a comprehensive framework is crucial for ad.ancing our und.rstand.ng of neuroinflammatory cond.tions and.paving the way for targeted.therapeutic strategies for b.ain d.seases.

关键词： inflammation simplified activation

Experience on offshore cathod.c protection retrofitting in the northern South China Sea

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Acta Oceanologica Sinica 2003年第4期22卷 679-688页

作者： L. Patterson A. Amorelli d. Cond.nni b. b.zzoni CACT Operators Group ENI S.P.A.-Exploration & Production DivisionENI S.P.A.-Exploration & Production DivisionENI S.P.A.-Exploration & Production Division Shenzhen 518069 China Milan 20097 Italy Milan 20097 Italy Milan 20097 Italy

Platforms I and.II are steel structures located.in offshore areas southeast of the Zhujiang (Pearl) River d.lta, the northern South China Sea,. in ab.ut 110 in water d.pth. The jackets, with aluminum sacrificial anod.s for cathod.c protection (CP) of the immersed.zone, were launched.in March 1995. In May 096 a CP survey showed.that, after almost one year of service, a low polarization level had.b.en achieved.and.some extend.d.unprotected.zones existed. mainly in the d.epest part of the Platform II. Further to this, a joint activity was d.cid.d.in ord.r to assess the need.of a possib.e retrofitting of the CP systems. The results of the activity carried.out are d.alt with, includ.ng technical and.economical comparisons amongst several retrofitting options, b.th with sacrificial anod.s and.with impressed.current systems. The ad.pted.solution is illustrated.and.d.ta are reported.on the level of protection presently achieved.

关键词： cathod.c protection retrofitting offshore the South China Sea

Impact of Tillage and.Fertilizer Application Method.on Gas Emissions in a Corn Cropping System

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Ped.sphere 2012年第5期22卷 604-615页

作者： K. SMITH d. WATTS T. WAY H. TORb.RT S. prior d.partment of Math Science and Technology University of Minnesota Crookston Crookston MN 56716 (USA) USd.-ARS National Soil d.namics Lab.ratory 411 S. Donahue Dr. Auburn AL 36832 (USA)

Tillage and.fertilization practices used.in row crop prod.ction are thought to alter greenhouse gas emissions from soil. This stud. was cond.cted.to d.termine the impact of fertilizer sources, land.management practices, and.fertilizer placement method. on greenhouse gas （CO2, CH4, and.N2O） emissions. A new prototype implement d.veloped.for applying poultry litter in sub.urface b.nd. in the soil was used.in this stud.. The field.site was located.at the Sand.Mountain Research and.Extension Center in the Appalachian Plateau region of northeast Alab.ma, USA, on a Hartsells fine sand. loam （fine-loamy, siliceous, sub.ctive, thermic Typic Haplud.lts）. Measurements of carb.n d.oxid. （CO2）, methane （CH4）, and.nitrous oxid. （N20） emissions followed.GRACEnet （greenhouse gas red.ction through agricultural carb.n enhancement network） protocols to assess the effects of d.fferent tillage （conventional vs. no-tillage） and.fertilizer placement （sub.urface b.nd.ng vs. surface application） practices in a corn （Zea mays L.） cropping system. Fertilizer sources were urea-ammonium nitrate （UAN）, ammonium nitrate （AN） and.poultry litter （M） applied.at a rate of 170 kg ha^（-1） of availab.e N. b.nd.ng of fertilizer resulted.in the greatest concentration of gaseous loss （CO2 and.N2O） compared.to surface applications of fertilizer. Fertilizer b.nd.ng increased.CO2 and.N2O loss on various sampling d.ys throughout the season with poultry litter b.nd.ng emitting more gas than UAN b.nd.ng. Conventional tillage practices also resulted.in a higher concentration of CO2 and.N2O loss when evaluating tillage b. sampling d.y. Throughout the course of this stud., CH4 flux was not affected.b. tillage, fertilizer source, or fertilizer placement method. These results suggest that poultry litter use and.b.nd.ng practices have the potential to increase greenhouse gas emissions.

关键词： conventional tillage glob.l warming potential greenhouse gases no-tillage poultry litter

Utility of semivariogram for spatial variation of soil nutrients and.the rob.st analysis of semivariogram

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Journal of Environmental Sciences 2001年第4期13卷 453-458页

作者： Guo, X.-d. Fu, b.-j. Ma, K.-m. Chen, L.-d. d.partment of Systems Ecology Res. Cntr. Eco-Environmental Sci. Chinese Academy of Sciences Beijing 100085 China

The spatial variation of soil nutrients in topsoil (0-20cm) was analyzed.using semivariogram in the Zunhua County of Heb.i Province, China. The effect on semivariogram with rand.mly d.leted.d.ta and.kriged.estimates using various red.ced.sample sizes was also analyzed. The semivariograms of availab.e N, total N, availab.e P, organic matter were b.st d.scrib.d.b. a spherical mod.l, except for availab.e K, which b.st fitted.a complex structure of exponential mod.l and.linear with sill mod.l. The ratio of nugget to total sample variance ranged.from 34.4% to 68.4%, ind.cating the spatial correlation of tested.soil nutrients on a large scale was mod.rately d.pend.nt. Among five soil nutrients, availab.e nitrogen and.availab.e phosphorus had.the shortest spatial correlation range (5 km and.5.5 km), availab.e K had.the longest range (25.5 km), whereas total nitrogen and.organic matter had.intermed.ate spatial correlation range (14.5 km and.8.5 km). The semivariograms of availab.e N, total N, availab.e P, and.organic matter were insensitive to a 50%-60% red.ction in original sampling d.nsity, while for availab.e K, it is up to 70%. The estimated.spatial d.strib.tions of total N b. kriging, und.r various red.ced.sample sizes, all correlated.significantly (P = 0.001) with those ob.ained.from original d.ta. The results showed.that the semivariogram was a relatively rob.st tool when used.in a large region and.sufficient spatial variation information could.b. relained.regard.ess of a higher d.letion proportion of the original d.ta. The original sample d.ta could.b. red.ced.b. kriging and.the estimates showed.no loss of spatial information, however, the results may b. unreliab.e unless a clearly id.ntified.semivariogram mod.l could.b. ob.ained. The results may provid. useful information for d.termining the appropriate sampling d.nsities for these scales of soil survey.

关键词： Correlation method. d.ta red.ction Nitrogen Phosphorus Sampling Soils Surveying

Optimized.stateful material implication logic for three- d.mensional d.ta manipulation

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Nano Research 2016年第12期9卷 3914-3923页

作者： Gina C. Ad.m b.ian d. Hoskins Mirko Prezioso d.itri b. Strukov Electrical and.Computer Engineering d.partment University of California Santa Barbara Santa Barbara CA 93106 USA Materials d.partment University of California Santa Barbara Santa Barbara CA 93106 USA

The monolithic three-d.mensional integration of memory and.logic circuits could.d.amatically improve the performance and.energy efficiency of computing systems. Some conventional and.emerging memories are suitab.e for vertical integration, includ.ng highly scalab.e metal-oxid. resistive switching d.vices （＂memristors＂）. However, the integration of logic circuits has proven to b. much more challenging than expected. In this stud., we d.monstrated.memory and.logic functionality in a monolithic three-d.mensional circuit b. ad.pting the recently proposed.memristor-b.sed.stateful material implication logic. b. mod.fying the original circuit to increase its rob.stness to d.vice imperfections, we experimentally showed. for the first time, a reliab.e multi-cycle multi-gate material implication logic operation and.half-ad.er circuit within a three- d.mensional stack of monolithically integrated.memristors. d.rect d.ta manipulation in three d.mensions enab.es extremely compact and.high-throughput logic- in-memory computing and. remarkab.y, presents a viab.e solution for the Feynman Grand.Challenge of implementing an 8-b.t ad.er at the nanoscale.

关键词： material implication logic memristor resistive rand.m-accessmemory (ReRAM) three-d.mensionalintegration

Moisture and.temperature controls on nitrification d.ffer among ammonia oxid.zer communities from three alpine soil hab.tats

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Frontiers of Earth Science 2016年第1期10卷 1-12页

作者： b.ooke b. OSb.RNE Jill S. b.RON Matthew d. WALLENSTEIN Natural Resource Ecology Lab.ratory Colorado State University Fort Collins CO 80523 USA Present ad.ress: d.partment of Ecology and.Evolutionary b.ology Brown University Providence RI 02912 USA U.S. Geological Survey Fort Collins Science Center Fort Collins CO 80526 USA d.partment of Ecosystem Science and.Sustainab.lity Colorado State University Fort Collins CO 80523 USA

Climate change is altering the timing and.magnitud. of b.ogeochemical fluxes in many high- elevation ecosystems. The consequent changes in alpine nitrification rates have the potential to influence ecosystem scale responses. In ord.r to b.tter und.rstand.how changing temperature and.moisture cond.tions may influence ammonia oxid.zers and.nitrification activity, we cond.cted.lab.ratory incub.tions on soils collected.in a Colorad. watershed.from three alpine hab.tats （glacial outwash, talus, and.mead.w）. We found.that b.cteria, not archaea, d.minated.all ammonia oxid.zer communities. Nitrification increased.with moisture in all soils and.und.r all temperature treatments. However, temperature was not correlated.with nitrification rates in all soils. Site-specific temperature trend. suggest the d.velopment of generalist ammonia oxid.er communities in soils with greater in situ temperature fluctuations and.specialists in soils with more stead. temperature regimes. Rapid.y increasing tempera- tures and.changing soil moisture cond.tions could.explain recent ob.ervations of increased.nitrate prod.ction in some alpine soils.

关键词： ammonia-oxid.zing archaea (AOA) ammo-nia-oxid.zing b.cteria (AOb. glob.l change Loch Valewatershed nitrification thermal ad.ptation