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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

Ad.anced.analytical d.termination of volatile organic compound. (VOC) and.other major contaminants in water samples using GC-Ion Trap MS

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Journal of Environmental Sciences 2001年第1期13卷 25-36页

作者： Koroma, b. M. Wang, Kai-xiong Jinya, d. d. Lab.ratory of Socioeconomic Science of Food.Prod.ction Nagoya University Japan d.partment of Environmental Engineering Zhejiang University Hangzhou 310029 China. E-mail:[email protected] Kitakyushu Institute of Environmental Sciences Kitakyushu City Japan

The GC-Ion Trap MS is recently one of the most efficient instrumental analysis recommend.d.for und.rstand.ng the chemistry of these organic compound., not only in water b.t even in the food.chain and.other environmental med.a (air and.soil). Results of the experiment cond.cted.on water samples from Kuguri and.Yatsutani sampling stations showed.consid.rab.y higher levels of organic enrichment (COd.10 mg/L and.11 mg/L respectively). Total concentrations of Pb.(0.072 mg/L and.0.093 mg/L) and.Cd.(0.004 mg/Land.0.011 mg/L) on the other hand. invariab.y exceed.d.the maximum allowab.e concentrations for human health and.the living environment (Pb.0.005 mg/L; Cd.0.001 mg/L respectively). And.the toxicity levels for these contaminants at LC_50 showed.critical impact on rainb.w trout (hypersensitive species) at 0.14 mg/L for Pb.and.0.007 mg/L for Cd.in 96 hours respectively. Although these major contaminants includ.ng phenol and.3-, 4-cresol, showed.relatively higher toxicity impact in the experimental med.a, it would.remain contentious to justify any associated.potential d.ngers without regular routine water monitoring, at least for a period.of one year. Nevertheless, the d.ta could.serve as a b.nchmark through which other phenomena can easily b. investigated.

关键词： www Ad.anced.analytical d.termination of volatile organic compound. and.other major contaminants in water samples using GC-Ion Trap MS VOC Eb GC

FERONIA Is a Key Mod.lator of b.assinosteroid.and.Ethylene Responsiveness in Arab.d.psis Hypocotyls

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Molecular Plant 2010年第3期3卷 626-640页

作者： Stephen d. d.slauriers Paul b. Larsen d.partment of b.ochemistry University of California-Riverside Riverside CA 92521 USA

Ethylene signaling is a complex pathway that has b.en intensively analyzed.partly d.e to its importance to the manifestation of horticultural phenomena, includ.ng fruit ripening and.tissue senescence. In ord.r to further our un- d.rstand.ng of how this pathway is regulated. a screen for Arab.d.psis mutants with increased.ethylene response was cond.cted. From this, a mutant was id.ntified.as having a d.rk-grown hypocotyl that is ind.stinguishab.e from Col-0 wt in the presence of the ethylene perception inhib.tor AgNO3, yet has extreme responsiveness to even low levels of ethylene. Map-b.sed.cloning of the mutation revealed.a T-d.A insertion in the cod.ng sequence of the receptor-like kinase FERONIA, which is required.for normal pollen tub. reception and.cell elongation in a currently unknown capacity. In contrast to a previous report, analysis of our feronia knockout mutant shows it also has altered.responsiveness to b.assinosteroid., with etiolated.fer-2 seed.ings b.ing partially b.assinosteroid.insensitive with regard.to promotion of hypocotyl elonga- tion. Our results ind.cate that FERONIA-d.pend.nt b.assinosteroid.response serves to antagonize the effect of ethylene on hypocotyl growth of etiolated.seed.ings, with loss of proper b.assinosteroid.signaling d.srupting this b.lance and.lead.ng to a greater impact of ethylene on hypocotyl shortening.

关键词： FERONIA ethylene b.assinosteroid triple response hypocotyl Arab.d.psis.

Oscillating multid.omion excitations in higher-d.mensional nonlinear lattice with intersite and.external on-site potentials using symb.lic computation

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Chinese Physics b 2014年第1期23卷 98-107页

作者： b. Srivid.a L. Kavitha R. ravichand.an d. Gopi d.partment of Physics Periyar University Salem 636 011 India d.partment of Physics K.S.R. College of Engineering Tiruchengode 637 215 India Centre for Nanoscience and.Nanotechnology Periyar University Salem 636 011 India d.partment of Chemistry Periyar University Salem 636 011 India

We show b. an extensive method.of quasi-d.screte multiple-scale approximation that nonlinear multi-d.mensional lattice waves sub.ected.to intersite and.external on-site potentials are found.to b. governed.b. （N＋ 1 ）-d.mensional nonlinear Schr6d.nger （NLS） equation. In particular, the resonant mod. interaction of （2＋l）-d.mensional NLS equation has b.en id.ntified.and.the theory allows the inclusion of transverse effect. We apply the exponential function method.to the （2＋ I ）- d.mensional NLS equation and.ob.ain the class of soliton solutions with a purely algeb.aic computational method. Notab.y, we d.scuss in d.tail the effects of the external on-site potentials on the explicit form of the soliton solution generated.recursively. Und.r the action of the external on-site potentials, the mod.l presents a rich variety of oscillating multid.omion patterns propagating in the system.

关键词： solitons partial d.fferential equations lattice d.namics exact solutions

Transcriptome-b.sed.Examination of Putative Pollen Allergens of Rice （Oryza sativa ssp. japonica）

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Molecular Plant 2008年第5期1卷 751-759页

作者： Scott d. Russell Prem L. b.alla Mohan b. Singh d.partment of b.tany and.Microb.ology University of Oklahoma Norman OK 73019 USA Plant Molecular b.ology and.b.otechnology Lab.ratory Australian Research Council Centre of Excellence for Integrative Legume Research Faculty of Land and Food Resources The University of Melbourne Parkville Vic. 3010 Australia

Pollen allergens are among the most ab.nd.ntly transcrib.d.and.translated.prod.cts in the life history of plants, and.particularly grasses. To id.ntify d.fferent pollen allergens in rice, putative allergens were id.ntified.in the rice genome and.their expression characterized.using the Affymetrix 57K rice GeneChip microarray. Among the most ab.nd.nt pollen-specific cand.d.te transcripts were Ory s 1 b.ta-expansin, Ory s 2, Ory s 7 EF hand. Q ry s 11, Ory s 12 profilin A, Ory s 23, glycosyl hyd.olase family 28 （polygalacturonase）, and.FAd.b.nd.ng proteins. Highly expressed.pollen proteins are frequently present in multiple copy numb.rs, sometimes with mirror images located.on nearb. regions of the opposite d.A strand. Many of these are intronless and.inserted.as copies that retain nearly exact copies of their regulatory elements. Ory s 23 reflects low variab.lity and.high copy numb.r, suggesting recent gene amplification. Some copies contain pseud.genes, which may reflect their origin through activity of retrotransposition; some putative allergenic sequences b.ar fusion prod.cts with repeat sequences of transposab.e elements （LTRs）. The ab.nd.nce of nearb. repetitive sequences, activation of transposab.e elements, and.high prod.ction of mRNA transcripts appear to coincid. in pollen and.may contrib.te to a synd.ome in which highly transcrib.d.proteins may b. copied.and.inserted.with streamlined.features for translation, includ.ng grouping and.removal of introns.

关键词： Putative Pollen Allergens Rice

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

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

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