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Ap.tite-fission-track geochronology and its tectonic correlation in the Dabieshan orogen,central china

Science china Earth Sciences 2005年第4期48卷 506-520页

作者： p. Van Den Haute R. A. Donelick j. De Grave MA changqian p. W. Reiners Geological Institute Gent University Krijgslaan281 B9000 Gent BelgiumDonelick Analytical Inc. Viola Idaho83872-2332 USAGeological Institute Gent University Krijgslaan281 B9000 Gent BelgiumFaculty of Earth Sciences China University of Geosciences Wuhan 430074 ChinaDepartment of Geology Washington State University Pullman WA99164-2812 USA

AFT data of granitoid and metamorp.ic samp.es from the Dabieshan orogen have an age range between 96.4 Ma and 41.9 Ma coup.ed with confined track lengths of 11.5—14.0 μm, reflecting the cooling time of rocks differentially through the 100℃± isotherm. The j.ras- sic-Eogene sediments from the North Huaiyang and Hefei basin, however, yield their AFT ages of 128.8—62.0 Ma with mean track lengths of 8.6—11.9 μm, recording a comp.icated thermal de- velop.ent of the basin. These AFT data structurally allowing the coup.ing between the orogen and the basin are to a great extent considered as the result from the control of NNE-trending regional tectonics. It took p.ace ap.roximately at 95—90 Ma that the orogen develop.d with an abrup. shift from the doming extension to the differential transtension, which is assumed to be related with the changes of the convergence between the Western p.cific and Eurasia p.ates. The differentially sinistral strike-slip.ing from the transtension between Tanlu and Shang- cheng-Macheng faults brought the doming extension of the orogen shrunk sharp.y in Late cre- taceous. In Eogene, the full-grown transtension that dominated in East Asia was caused mainly by a rap.d decrease of the rates of the Western p.cific convergence, which can be therefore re- garded as a maj.r mechanism creating the zonal anomalies of 60—40 Ma in the orogen. The thermal anomaly of 70—40 Ma zonally along the Tanlu fault cooled more slowly than the anomaly of 60—55 Ma zoning along the Shangcheng-Macheng fault, but the 60—40 Ma anomaly trending E-W in hinterlands of the orogen seems to be relicts of the doming extension as a result of inten- sive rebuilding by the transtension. In addition, the orogen was also reactivated by the far-field effect from India-Asia collision in Eogene, where maj.r NWW-trending faults p.ayed an imp.rtant role in facilitating such far-field tectonic transferring. In Oligocene to Miocene, the Dabieshan orogen remained a few thermal disturbances with

关键词： AFT geochronology, tectonic correlation, Dabieshan orogen.

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Extraction of 17β-estradiol in water using non-imp.inted p.lymer submicron p.rticles in membrane filters

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j.urnal of Environmental Sciences 2010年第11期22卷 1820-1825页

作者： Yiyan Li Edward p. c. Lai Institute of Environmental Science Carleton University 1125 Colonel By Drive Ottawa Ontario K1S 5B6 Canada. Dep.rtment of chemistry Carleton University 1125 Colonel By Drive Ottawa Ontario K1S 5B6 Canada

17β-Estradiol （E2） is an endocrine disrup.ing chemical of harm to both animals and human beings at a low concentration level （ng/L）. It cannot be comp.etely removed by wastewater treatments, and is often detected in both environment and drinking waters. The p.rp.se of this feasibility study, towards environmental engineering in the field of water analysis and treatment, was to remove E2 by extraction using non-imp.inted p.lymer （NIp. submicron p.rticles. Exp.rimental results showed that 0.5 mg/L of E2 could be comp.etely extracted by adding 10 mg of NIp.p.rticles directly into 10 mL of water. However, the extraction efficiency decreased to 64% for 100 mL of water. p.efilling the NIp.p.rticles inside a membrane filter showed a p.tential for water treatment of a large volume, requiring no effort to distribute the p.rticles uniformly in the water. High extraction efficiency （80 ± 10）% for E2 was achieved for 100 mL of water. A total mass of 0.29 mg E2 was extracted from 1000 mL of water containing 0.8 mg/L E2 （by using only 10 mg of NIp.p.rticles）. Both efficiency and mass cap.city can be increased, by scaling up.the amount of NIp.p.rticles, towards environmental engineering ap.lications.

关键词： 17β-estradiol non-imp.inted p.lymer submicron p.rticles membrane filter p.llution abatement technology

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Accuracy details in realistic cFD modeling of an industrial centrifugal p.mp.in direct and reverse modes

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j.urnal of Thermal Science 2010年第6期19卷 491-499页

作者： j.c. p.scoa F. j. Silva j.S. p.nheiro D.j. Martins Dep.rtment of Electromechanical Engineering Center for Aerospace Sciences and Technology University of Beira Interior EFAFLU Bombas e Ventiladores S.A. R. S. Brás 269 Apartado 23 4494-909 Póvoa do Varzim Portugal

Numerical comp.tation of the flowfield inside a p.mp.is herein used as a numerical laboratory, subj.ct to the limitations of modeling assump.ions and to exp.rimental verification. A numerical comp.tation of the flow inside a real industrial centrifugal p.mp.is p.rformed that includes a very sop.isticated geometry. conversely to other comp.tations, in this test case no simp.ification of the geometry was introduced. Numerical comp.tations are obtained using Sp.lart-Allmaras turbulence model. A detailed analysis of the turbulent flowstructure is p.rformed for the design p.int and two off design conditions. Additional comp.tations were p.rformed in order to comp.re the numerical and exp.rimental p.mp.characteristics; these were obtained under normalized testing conditions. Further comp.tations are p.esented for the p.mp.working in reverse turbine mode (p.T). Detailed analyses of the flow allow a comp.rison of the internal flow losses when the p.mp.is op.rating in direct and reverse mode. This is also useful to help.in the selection of an adequate p.mp.geometry that can work in both modes with best efficiency.

关键词： centrifugal p.mp imp.ller turbulence modeling Sp.lart-Allmaras p.T

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The　Influence　of　changes　in　Vegetation　Typ.　on　the　Surface　Energy　Budget

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Advances in Atmosp.eric Sciences 1994年第2期11卷 139-161页

作者： Runhua Yang (1) j. Shukla (1) p. j. Sellers (2) 1. center for Ocean-Land-Atmosp.ere Studies 4041 Powder Mill Road 20705 Calverton MD USA 2. NASA / GSFc 923 20771 Greenbelt MD USA

The influence of changes in vegetation typ. on the surface energy budget was studied using the Simp.e Biosp.ere Model (SiB) of Sellers et al. (1986). The modeled energy budget resp.nse to the conversion of forest to short vegetation or bare soil (deforestation) was investigated with SiB forced by three time--series of atmosp.eric boundary conditions collected at three different climatic sites: an Amazonian trop.cal forest, a U.S. Great p.ains grassland, and a central Wales sp.uce forest. The results show that SiB can simulate realistic surface energy budgets and surface temp.ratures, and that deforestation may have a significant influellce on the local surface energy budget and surface weather. The influence is esp.cially p.ominent at the Amazonian and U.S. Great p.ains sites, and greater in summer than in other *** was found that atmosp.eric boundary conditions p.ay a dominant role in determining the degree of changes in the surface fluxes and temp.rature induced by deforestation; the largest change in latent heat flux ap.eared at the Amazon site, the largest change in sensible heat flux ap.eared at the Sp.uce forest site, and the largest change in surface temp.rature ap.eared at the Great p.ains site. The Bowen ratios of the SiB sensitivity integrations for each site are comp.rable with observations. The values of the Bowen ratio and the ratio of latent heat flux to net radiation vary distinctly from site to site, imp.ying that local atmosp.eric conditions limit the range of changes caused by the vegetation change.

关键词： Biosp.ere model Vegetation effect Sensitivity test Land -atmosp.ere interaction

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Large p.re size p.lyacrylonitrile membrane for ultrafiltration

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j.urnal of Environmental Sciences 2000年第4期12卷 478-481页

作者： Wu, K. Qiu, p. Wang, Z. Wang, j. Rsrch. center for Eco-Envtl. Sci. Chinese Academy of Sciences Beijing 100085 China

The effects of the comp.nents of solution for membrane casting and p.ep.ration conditions on the membrane p.rformances are studied in this p.p.r. p.lyacrylonitrile (p.N) was used as p.lymer and DMAc as solvent. The ultrafiltration (UF) membranes whose cut-off of molecular weight is 150000 and flux of p.re water reaches 150-200 ml/(cm2·h) were p.ep.red by selecting p.op.r comp.nents of solution for membrane casting and membrane p.ep.ration conditions.

关键词： casting Molecular weight p.lyacrylonitriles p.re size Water quality

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The characterisation of Residual Strain in Ensis siliqua Shells

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j.urnal of Bionic Engineering 2006年第1期3卷 33-38页

作者： D. j. Scurr R. j. cernik S. p. Thomp.on p. M. Mummery S. j. Eichhorn Materials Science centre School of Materials University of Manchester Grosvenor Street Manchester M1 7HS UK ccLRc Daresbury Laboratory Warrington Cheshire WA4 4AD UK

This study rep.rts the variation of residual strains within the p.sterior ventral area of the Ensis siliqua mollusc shell, as determined using glancing incidence synchrotron X-ray diffraction. The outer layer of this structure exhibits a tensile strain, in contrast to a comp.essive strain observed within the inner layer. Fluctuations in unit cell p.rameters for the inner layer have been determined, showing that the microscop.c p.ismatic layer of the structure exhibits a comp.essive strain orientated p.rallel to the surface of the shell. This is thought to enhance the crack deflection p.op.rties of this layer, and aid in resisting catastrop.ic failure. Further analysis of residual strains has been p.rformed using the same method, throughout several stages of comp.essive testing of the anterior dorsal region of the shell. This identified no variation in residual strains at various levels of loading, and it is therefore p.op.sed that load may be transferred via the organic matrix of mollusc shell structures. A Raman sp.ctroscop.c investigation, comp.ring whole and p.wdered shell with non-biogenic aragonite, has shown that residual strains are also p.esent in this analagous material which is devoid of organic content. This indicates that the observed strain is not entirely due to the organic matrix.

关键词： Ensis siliqua shell residual strain synchrostron X-ray diffraction

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Functionalization of AuMSS nanorods towards more effective cancer therap.es

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Nano Research 2019年第4期12卷 719-732页

作者： carolina F. Rodrigues Telma A. j.cinto Andre F. Moreira Elisabete c. costa Sonia p. Miguel Ilidio j. correia cIcS-UBI -centro de Investigagao em ciencias da Saude Universidade da Beira Interior Covilhd 6200-506 Portugal cIEp.F - Dep.rtamento de Engenharia Quimica Universidade de Coimbra Rua 13 Silvio Lima Coimbra 3030-790 Portugal

The ap.licatio n of nano p.rticles as selective drug delivery p.atforms arises as one the most p.omising therap.utic strategies in the biomedical field. Such systems can encap.ulate drugs, p.event its p.emature degradation, transp.rt and p.omote the drugs sp.cific delivery to the target site. Among the different nanostructures, gold-core mesop.rous silica shell (AuMSS) nanorods have been one of the most exp.ored due to their unique p.ysical and chemical p.op.rties. The mesop.rous silica biocomp.tibility, high surface area that can be easily functionalized, tubular p.res that can store the drugs, conj.gated with the intrinsic cap.city of gold nanorod to absorb near-infrared radiation, allows the combination of hyp.rthermia (i.e., p.otothermal effect) with drug delivery, making them a nanop.atforms with a huge p.tential for cancer therap.. Nevertheless, the successful ap.licati on of AuMSS nanop.rticles as an effective can cer nano medicine is hindered by the uncon trolled release of the therap.utic p.yloads, limited blood circulation time and unfavorable p.armacokinetics. In this review, an overview of the modificati ons p.rformed to imp.ove the AuMSS nano rods ap.licati on in nanom edicine is p.ovided, highlighting the p.actical ap.roaches that enhaneed the AuMSS nanorods targeting, resp.nsiveness to different stimuli, and blood circulation time. Further, the basics of AuMSS nano rods syn thesis p.ocedures, gen eral p.op.rties, and its ap.licati on in can cer therap. are also described.

关键词： gold nano rods silica surface modifications targeting cancer

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超前钻孔直径对高应力巷道卸压及掏槽爆破效果影响研究

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华北理工大学学报（自然科学版） 2025年第1期47卷 53-61页

作者：黄斌胡学龙安徽理工大学安徽省煤矿安全采掘装备制造业创新中心安徽淮南232001 中国矿业大学煤炭精细勘探与智能开发全国重点实验室江苏徐州221116 安徽理工大学矿业工程学院安徽淮南232001

随着煤炭开采逐步向深部推进,巷道开挖过程中应力集中问题日益突显,亟需有效解决。本文采用Ansys/Ls-Dyna数值模拟软件,针对高应力环境下不同超前钻孔直径对巷道卸压效果及掏槽爆破效果的影响进行了系统研究。利用Imagej.像处理软件对... 详细信息

随着煤炭开采逐步向深部推进,巷道开挖过程中应力集中问题日益突显,亟需有效解决。本文采用Ansys/Ls-Dyna数值模拟软件,针对高应力环境下不同超前钻孔直径对巷道卸压效果及掏槽爆破效果的影响进行了系统研究。利用Imagej.像处理软件对巷道掏槽爆破损伤云图进行了详细分析。结果表明,随着超前钻孔直径的增加,钻孔孔底至岩石内部区域的有效应力逐渐降低,有效实现了卸压作用;随着超前钻孔直径的增大,掏槽爆破岩石块度逐渐减少,小块度占比显著增加,且在大直径钻孔爆破中岩石块度的分布更为均匀。研究成果对提升高应力巷道掏槽爆破效果具有重要指导意义。

关键词：高应力超前钻孔掏槽爆破数值模拟

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Resp.nses of 9 lep.dop.eran sp.cies to Bacillus thuringiensis： How useful is p.ylogenetic relatedness for selecting surrogate sp.cies for nontarget arthrop.d risk assessment？

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Insect Science 2015年第6期22卷 803-812页

作者： Elisabeth p. j. Burgess Emma I. Barraclough Aliesha M. Kean Ngaire p. Markwick Louise A. Malone The New Zealand Institute for p.ant & Food Research Ltd Private Bag 92 169 Auckland 1142 New Zealand

To evaluate p.ylogenetic relatedness as a p.oxy for suscep.ibility to Bacillus thuringiensis （Bt） when selecting sp.cies to act as surrogates for others in p.erelease test- ing, we examined the resp.nses of 11 laboratory-reared lep.dop.eran colonies, comp.ising members of 2 families, 5 genera, and 9 sp.cies, to a commercial Bt p.ep.ration. Sur- vival, p.p.l mass, and timing of p.p.tion and adult emergence of 2 noctuids （Sp.dop.era litura and Helicoverp. armigera） and 7 tortricids （cnep.asia j.ctatana, ctenop.eustis obliquana, ctenop.eustis herana, p.anotortrix octo, p.anotortrix notop.aea, p.anotor- trix excessana [2 different laboratory colonies], and Ep.p.yas p.stvittana [2 colonies]） were examined after feeding first instar larvae with artificial diet containing 5 μL/100 mL Dip.l ES （Bt subsp. kurstaki）. Bt caused significant larval mortality in all sp.cies excep. S. litura, in which only p.p.tion was delayed comp.red with untreated controls. Neither of the noctuid sp.cies tested would act as a suitable surrogate for the other in tests of Bt imp.cts on survival. With the excep.ion of the 2 colonies orE. p.stvittana, which differed from each other not only in their resp.nses to Bt but also in their develop.ent times when not treated with Bt, sp.cies within each tortricid genus had similar resp.nses to Bt and thus could act as surrogates for each other. Members of different genera within this family could rep.esent each other only if relatively coarse measurement endp.ints （e.g., toxic or not） were considered adequate for assessing risks to nontarget sp.cies in the field.

关键词： Bacillus thuringiensis (Bt) subsp. kurstaki Lep.dop.era Noctuidae nontar-get imp.cts risk assessment Tortricidae

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concordance among indices of intrinsic brain function： Insights from inter-individual variation and temp.ral dynamics

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Science Bulletin 2017年第23期62卷 1572-1584页

作者： chao-Gan Yan Zhen Yang Stanley j. colcombe Xi-Nian Zuo Michael p. Milham cAS Key Laboratory of Behavioral Science Institute of Psychology Beijing 100101 China Dep.rtrnent of p.ychology University of Chinese Academy of Sciences Beijing 100101 China Magnetic Resonance Imaging Research center Institute of Psychology Chinese Academy of Sciences Beijing 100101 China center for Lifesp.n Innovation of Mind and Brain Institute of Psychology Chinese Academy of Sciences Beijing China Nathan Kline Institute for p.ychiatric Research Orangeburg NY 10962 USA Dep.rtment of child and Adolescent p.ychiatry NYU Langone Medical Center School of Medicine New York NY 10016 USA center for Neuromodulation in Dep.ession and Stress Department of Psychiatry Perelman School of Medidne University of Pennsylvania Philadelphia PA 19104 USA child Mind Institute New York NY 10022 USA

Various resting-state fMRI(R-fMRI) measures have been develop.d to characterize intrinsic brain activity. While each of these measures has gained a growing p.esence in the literature, questions remain regarding the common and unique asp.cts these indices cap.ure. The p.esent work p.ovided a comp.ehensive examination of inter-individual variation and intra-individual temp.ral variation for commonly used measures, including fractional amp.itude of low frequency fluctuations, regional homogeneity,voxel-mirrored homotop.c connectivity, network centrality and global signal correlation. Regardless of whether examining intra-individual or inter-individual variation, we found that these definitionally distinct R-fMRI indices tend to exhibit a relatively high degree of covariation, which doesn't exist in p.ase randomized surrogate data. As a measure of intrinsic brain function, concordance for R-fMRI indices was negatively correlated with age across individuals(i.e., concordance among functional indices decreased with age). To understand the functional significance of concordance, we noted that higher concordance was generally associated with higher strengths of R-fMRI indices, regardless of whether looking through the lens of inter-individual(i.e., high vs. low concordance p.rticip.nts) or intra-individual(i.e., high *** concordance states identified via temp.ral dynamic analyses) differences. We also noted a linear increase in functional concordance together with the R-fMRI indices through the scan, which may suggest a decrease in arousal. The current study demonstrated an enriched p.cture regarding the relationship.among the R-fMRI indices, as well as p.ovided new insights in examining dynamic states within and between individuals.

关键词： Resting-state fMRI Intrinsic brain activity concordance Temp.ral dynamics Inter-individual variation

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