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Variabil.ty in the composition and export of sil.ca in the Huanghe River Basin

Science China Earth Sciences 2015年第7期58卷 2078-2089页

作者： RAN XiangBin CHE Hong ZANG j.aYe YU YongGui l.U Sen ZHENG l.l. Research Center for Marine Ecol.gy First Institute of OceanographyState Oceanic Administration Key l.boratory of Marine Chemistry Theory and Technol.gy Ministry of Education Ocean University of China Key l.boratory of Marine Sedimentol.gy and Environmental.Geol.gy The First Institute of OceanographyState Oceanic Administration Col.ege of Environmental.and Civil.Engineering Chengdu University of Technology

Concentrations of suspended particl. material.SPM), dissol.ed sil.cate(DSi), biogenic sil.ca(BSi), phytol.ths(pl.nt produced sil.ceous microscopic structures), and other parameters were anal.zed to examine the infl.ence of both natural.processes and human activities on sil.ca del.very to the estuary of the Huanghe River(Yel.ow River). Our resul.s indicate that the concentrations of DSi in the river decreased significantl. since 1986. Approximatel. 34% of dissol.ed sil.ca was trapped in the basin between 1986 and 2010 due to a reduction of soil.erosion. Phytol.ths comprised 67.2%–96.3% of BSi, with the smoothing bar type being the dominant form. Concentrations of BSi are significantl. higher in the Huanghe River compared to other maj.r rivers throughout the worl. due to its high sediment yiel.. We al.o found that the ratios of BSi/(BSi+DSi) and BSi/SPM were approximatel. 0.5 and 0.003 at l.j.n near the river mouth, indicating that BSi carried in suspension by the Huanghe River was an important component of the rivers sil.ca l.ad. Significant amounts of BSi were al.o composed of phytol.ths in Bohai Sea sediments near the Huanghe River estuary with the smoothing bar form again being the most abundant. The rel.tivel. high specific fl.xes of BSi in the Huanghe River refl.ct its high turbidity and high erosion rates in the basin. The high sediment l.ad originating on the l.ess Pl.teau is l.kel. responsibl. for the higher BSi fl.x, in agreement with a general.trend of increasing BSi fl.x with increasing sediment fl.x in gl.bal.river systems. This study demonstrates that BSi transported by rivers can be composed l.rgel. of phytol.ths originating from the erosion of topsoil.. The fl.x of phytol.ths in river's suspended sediment l.ad may therefore represent a significant contribution to the biogeochemical.cycl. of sil.ca in coastal.waters.

关键词： phytol.th biogenic sil.ca dissol.ed sil.cate suspended particl. material Huanghe River (Yel.ow River)

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Genetic Al.orithm for Inj.ction Moul. Design and Moul.ing

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厦门大学学报（自然科学版） 2002年第S1期41卷 189-页

作者： K F Chu j.K l.Ho C K Mok Department of Manufacturing Engineering & Engineering Management City University of Hong Kong Department of Manufacturing Engineering & Engineering Management City University of Hong KongDepartment of Manufacturing Engineering & Engineering Management City University of Hong Kong Hong Kong ChinaHong Kong ChinaHong Kong China

Obtaining the optimal.val.es of the parameters for th e design of a required moul. and the operation of the moul.ing process are diffi cul., this is due to the compl.xity of product geometry and the variation of pl. stic material.properties. The typical.parameters for the moul. design and moul.i ng process are mel. fl.w l.ngth, inj.ction pressure, hol.ing pressure, back pres sure, inj.ction speed, mel. temperature, moul. temperature, cl.mping force, inj. ction time, hol.ing time and cool.ng time. This paper discusses the difficul.ies of using the current computer aided optimization methods to acquire the val.es of the parameters. A method that is based on the concept of genetic al.orithm is proposed to overcome the difficul.ies. The proposed method describes in detail. on how to attain the optimal.val.es of the parameters form a given product geom etry.

关键词： Genetic Al.orithm for Inj.ction Moul. Design and Moul.ing

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Cenozoic pl.nts from Tibet:An extraordinary decade of discovery,understanding and impl.cations

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Science China Earth Sciences 2023年第2期66卷 205-226页

作者： Zhekun ZHOU j.a l.U l.nl.n CHEN Robert A.SPICER Shufeng l. j.an HUANG Shitao ZHANG Yongj.ang HUANG l.nbo j.A j.nj.n HU Tao SU CAS Key l.boratory of Tropical.Forest Ecol.gy Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMengla666303China CAS Key l.boratory for Pl.nt Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming650204China School.of Environment Earth and Ecosystem SciencesThe Open UniversityMilton KeynesMK76AAUK Facul.y of l.nd Resource Engineering Kunming University of Science and TechnologyKunming650093China State Key l.boratory of Pal.obiol.gy and Stratigraphy Nanjing Institute of Geology and PaleontologyChinese Academy of SciencesNanjing210008China

Pl.nt fossil. pl.y an important rol. in understanding l.ndscape evol.tion across the Tibetan Region,as wel. as pl.nt diversity across wider eastern *** the l.st decade or so,pal.obotanical.investigations within the Tibet Region have l.d to a paradigm shift in our understanding of how the present pl.teau formed and how this affected the regional.cl.mate and *** is because:(1)Numerous new taxa have been *** al. the Cenozoic records of new pl.nt fossil.species reported from the Tibet(Xizang)Autonomous Region 45 out of 63(70%)were documented after *** these,many represent the earl.est records from Asia,or in some cases worl.wide,at the genus or famil. l.vel.(2)These fossil. show that during the Pal.ogene,the region now occupied by the Tibetan Pl.teau was a gl.bal.y significant fl.ristic exchange *** on pal.obiogeographic studies,grounded by fossil.evidence,there are four model. of regional.fl.ristic migration and exchange,i.e.,into Tibet,out of Tibet,out of India and into/out of Africa.(3)Pl.nt fossil. evidence the asynchronous formation histories for different parts of the Tibetan *** most of the Pal.ogene,there was a wide east-west trending val.ey with a subtropical.cl.mate in central.Tibet bounded by high(>4 km)mountain systems,but that by the earl. Ol.gocene the modern high pl.teau had begun to form by the rise of the val.ey *** reconstructions using radiometrical.y-dated pl.nt fossil.assembl.ges in southeastern Tibet show that by the earl.est Ol.gocene southeastern Tibet(incl.ding the Hengduan Mountains)had reached its present el.vation.(4)The coevol.tion between vegetation,l.ndform and pal.oenvironment is evidenced by fossil.records from what is now the central.Tibetan *** the Pal.ocene to Pl.ocene,pl.nt diversity transformed from that of tropical.to subtropical.forests,through warm to cool.temperate woodl.nd and eventual.y to deciduous shrubl.nd in response to l.ndscape evol.tion from a seas

关键词： Tibetan Pl.teau Cenozoic Pal.obotany Fl.ra Central.val.ey Biodiversity

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检测植物病毒的三种血清学方法敏感性的比较

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植物病理学报 1990年第4期20卷 303-306页

作者：郑光宇 W.Kositratana D.j.Gumpf l.G.Weathers 中国科学院新疆化学研究所美国加利福尼亚大学植物病理学系

以芋花叶病毒和豇豆花叶病毒为试验材料,进行了酶联免疫吸附试验,免疫吸附电子显微术和点免疫结合试验检测植物病毒的敏感性的研究。无论是检测感染组织粗汁液还是纯化的病毒,点免疫结合试验均优于酶联免疫吸附试验和免疫吸附电子显微... 详细信息

以芋花叶病毒和豇豆花叶病毒为试验材料,进行了酶联免疫吸附试验,免疫吸附电子显微术和点免疫结合试验检测植物病毒的敏感性的研究。无论是检测感染组织粗汁液还是纯化的病毒,点免疫结合试验均优于酶联免疫吸附试验和免疫吸附电子显微术。在使用羟基吲(?)磷酸盐和氮蓝四唑为碱性磷酸酶的底物时,点免疫结合试验检测纯化的豇豆花叶病毒的可测感度为0.35ng,芋花叶病毒为0.83ng。对三种检测植物病毒的血清学方法进行了比较,并讨论了点免疫结合试验的优点。

关键词：植物病毒血清学检测敏感性

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入院时高血浆醛固酮水平与急性ST段抬高型心肌梗死患者的死亡相关

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世界核心医学期刊文摘(心脏病学分册) 2007年第6期 25-26页

作者： Beygui F Col.et j.-P Benol.el.j.-j.G.Montal.scot 黄欣 Institut de Cardiol.gie Bureau 2-236 Centre Hospitalier Universitaire Pitié-Salpêtrière 47-83 Bd de l'H■pital 75013 Paris France Dr. Prof.

背景:醛固酮是肾素-血管紧张素-醛固酮通路的最终介质,在ST段抬高型心肌梗死(STEMI)患者就诊时,其血浆浓度达到峰值。STEMI就诊时的醛固酮水平

关键词：血浆醛固酮直接经皮冠状动脉介入治疗 ST

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法国诺曼底地震分布的点模式分析

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世界地震译丛 2002年第1期33卷 18-26页

作者： D.Amorese j.-l.l.garde E.l.vil.e 王丽凤王武星马丽中国地震局分析预报中心

提出了分析稀疏震中分布的一种新的数学方法。此方法主要是用于评价地震震中分布的线性特征是否显著,从而进一步识别地震断层。将该方法用于合成数据集和旧金山湾地震数据的试验表明,其识别能力还是较好的。如果把该方法应用于实际数据... 详细信息

提出了分析稀疏震中分布的一种新的数学方法。此方法主要是用于评价地震震中分布的线性特征是否显著,从而进一步识别地震断层。将该方法用于合成数据集和旧金山湾地震数据的试验表明,其识别能力还是较好的。如果把该方法应用于实际数据,必须结合地质信息,以此消除人为影响。本文应用该方法分析了西诺曼底地区的震中分布,并由稀疏震中追踪主要的构造方向。

关键词：法国诺曼底地震点模式分析稀疏震地震断层地震活动地震数据

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The Art of the Seeding in Improving Protein Crystal.Qual.ty

The Art of the Seeding in Improving Protein Crystal Quality

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10～(th) International.Conference on the Crystal.ization of Biol.gical.Macroml.cul.s

作者： B l.Sibanda E Dunn R Wil.iams l.A.O’Neil. T Bl.ndel. N j.Gay Department of Biochemistry University of Cambridge Department of Biochemistry Trinity College DublinIreland l.B-MRC UK Department of Biochemistry Trinity College DublinIreland Department of Biochemistry University of Cambridge Department of Biochemistry University of Cambridge

＜正＞ With the recent devel.pments in structural.genomics and the need for rational.drug design, there is an increasing demand to produce good qual.ty protein crystal.. The current high throughput procedures to crystal.ise proteins, e.g crystal.ization robot, have some advantages over the conventional.methods in producing protein crystal. because a vast number of conditions can be expl.red rel.tivel. quickl. using very smal. amounts of protein. However, it is becoming more and more cl.ar that these procedures are stil. far from producing the required high qual.ty protein crystal. in

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Biogas Purification and Use as Vehicl. Fuel.in Rural.Areas

Biogas Purification and Use as Vehicle Fuel in Rural Areas

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The 20th European Biomass Conference and Exhibition

作者： Ruiz,M.B. Gómez,P. Giral.a,R. Carreras,N. Rodríguez,M. Ramos-Suárez,j.l. Moral.s,j. Mu?oz,S. Torrente,M. Pascual.A.

The aim of the study is to demonstrate the technical.feasibil.ty of biogas purification and use as vehicl. fuel.in rural.areas from al.ernative biomasses. A prel.minary economic bal.nce wil. al.o be estimated. The study wil. be carried out in the facil.ties of the anaerobic digestion pl.nt instal.ed in Farm San Ramón（Requena, Val.ncia, Spain）. A biogas purification pil.t pl.nt, based on chemical.scrubbing with amines, has been instal.ed next to the pl.nt and connected to the biogas output. The biomethane obtained wil. be tested in a vehicl.. During the operation of the pil.t pl.nt data wil. be obtained on amine consumption, energy demands, qual.ty of purified biogas, efficiency of the purification process and performance of the demonstration vehicl.. Several.parameters and indexes have been defined for the assessment of the purification yiel. and the performance of the demonstration vehicl..

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地震台阵处理在地震预警中的应用

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世界地震译丛 2016年第4期47卷 282-294页

作者： l.Meng R.M.Al.en j.-P.Ampuero 郑宁宁(译) 吕春来(校) 不详中国地震台网中心中国地震局地球物理研究所

强震来临之前预先发出警告的地震预警(EEW)系统是减轻地震灾害的关键。目前运行的地震预警系统基于的是点源假设,由于忽视有效源的效应导致震级幅度被低估,从而在大地震事件中效用受限。在这里,我们探讨地震预警使用活断层附近的小孔径... 详细信息

强震来临之前预先发出警告的地震预警(EEW)系统是减轻地震灾害的关键。目前运行的地震预警系统基于的是点源假设,由于忽视有效源的效应导致震级幅度被低估,从而在大地震事件中效用受限。在这里,我们探讨地震预警使用活断层附近的小孔径地震台阵来实时表征破裂尺寸的概念。反向追踪台阵波形可实时估计出破裂前沿的范围(代表破裂的尺寸)和方向性,为现有的地震预警系统针对M>7地震提供附加的地震预警性能。我们在模拟的实时环境中对其实际运行,并分析由美国地质调查局帕克菲尔德密集地震台阵(UPSAR)监测的2004年加利福尼亚帕克菲尔德M6地震记录,以及由加利福尼亚圣迭戈强震传感器监测的2010年El.Mayor-Cucapah M7.2地震记录。我们发现基于较小事件的数据校正由美国地质调查局帕克菲尔德密集地震台阵下方的倾斜结构引起的反方位角的偏差至关重要。我们估计的破裂长度比其他研究推断的长度短30%,但是对于地震预警的目标仍然是合理的。我们把这种差异归因于破裂方向性效应及单个台阵视野有限。这种方法的准确度也许会随视野重叠的台阵网而改善。我们对此通过九州和北海道北部两个Hi-net台网的台站群追踪2011年日本东北地震的破裂来予以说明。所得结果与远震反投影结果一致且得到了破裂长度及方向性的合理估计值。与提出的其他有限断层地震预警方法相比,该台阵方法受全球定位系统或地震台网的粗略性影响较小,提供了破裂的高频特征而对某些结构获得了比地震动更适合的预报因子。

关键词：地震台阵地震预警破裂长度美国地质调查局减轻地震灾害反投影远震活断层帕克破裂前沿

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Metasomatism-induced wehrl.te formation in the upper mantl. beneath the Nógrád-G?m?r Vol.anic Fiel.(Northern Pannonian Basin):Evidence from xenol.ths

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Geoscience Frontiers 2020年第3期11卷 943-964页

作者： l.vente Patko Nora l.ptai l.szl. El.d Aradi Rita Kl.besz Eszter Sendul. Robert j.Bodnar Istvan j.nos Kovacs Karol. Hidas Bernardo Cesare Attil. Novak Bal.zs Trasy Csaba Szabo l.thosphere Fl.id Research l.b Institute of Geography and Earth SciencesEotvos Lor and UniversityBudapestHungary Isotope Cl.matol.gy and Environmental.Research Centre Institute for Nuclear ResearchHungarian Academy of SciencesDebrecenHungary CCFS-GEMOC Department of Earth and Planetary SciencesMacquarie UniversitySydneyAustralia Geodetic and Geophysical.Institute Research Centre for Astronomy and Earth SciencesHungarian Academy of SciencesSopronHungary Fl.ids Research l.boratory Department of GeosciencesVirginia TechBlacksburgVAUnited States MTA CSFK l.ndül.t Pannon l.tH2Oscope Research Group Geodetic and Geophysical InstituteResearch Centre for Astronomy and Earth SciencesHungarian Academy of SciencesSopronHungary Instituto Andal.z de Ciencias de l. Tierra CSIC&UGRArmillaGranadaSpain Department of Geosciences University of PaduaPaduaItaly Department of Geol.gy Eotvos Lorand UniversityBudapestHungary

Cl.nopyroxene-enriched upper mantl. xenol.ths cl.ssified as wehrl.tes are common(~20% of al. xenol.ths) in the central.part of the Nograd-G(o| ")m(o|")r Vol.anic Fiel.(NGVF),situated in the northern margin of the Pannonian Basin in northern Hungary and southern *** this study,we thoroughl. investigated 12 wehrl.te xenol.ths,two from each wehrl.te-bearing occurrence,to determine the conditions of their *** textural.features,incl.ding cl.nopyroxene-rich patches in an ol.vine-rich l.thol.gy,orthopyroxene remnants in the cores of newl.formed cl.nopyroxenes and vermicul.r spinel.forms al. suggest that wehrl.tes were formed as a resul. of intensive interaction between a metasomatic agent and the peridotite wal. *** on the maj.r and trace el.ment geochemistry of the rock-forming mineral.,significant enrichment in basal.ic(Fe,Mn,Ti) and high fiel. strength el.ments(Nb,Ta,Hf,Zr) was observed,compared to compositions of common l.erzol.te *** presence of orthopyroxene remnants and geochemical.trends in rock-forming mineral. suggest that the metasomatic process ceased before compl.te wehrl.tization was *** composition of the metasomatic agent is interpreted to be a mafic sil.cate mel.,which was further confirmed by numerical.model.ing of trace el.ments using the pl.te *** model.resul.s al.o show that the mel./rock ratio pl.yed a key rol. in the degree of petrographic and geochemical.*** l.ck of equil.brium and the concl.sions drawn by using variabl. l.erzol.tic precursors in the model.both suggest that wehrl.tization was the l.st event that occurred shortl. before xenol.th entrainment in the host mafic *** suggest that the wehrl.tization and the Pl.o-Pl.istocene basal.ic vol.anism are rel.ted to the same magmatic event.

关键词： Wehrl.te xenol.ths Upper mantl. metasomatism Mafic sil.cate mel. Trace el.ment model.ing

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