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利用ML振幅研究地壳横波Q值Ⅱ：Q横向变化特征

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地球物理学报 2008年第1期51卷 133-139页

作者：汪素云裴顺平 Thomas M. Heam 许忠淮 james f. Ni 俞言祥中国地震局地球物理研究所北京100081 中国科学院青藏高原研究所北京100085 New Mexico State University Physics Department Las Cruces NM 88003 USA

利用中国地震年报（1984-2004年）测定ML所用的54000余条区域地震最大振幅数据,采用二维层析成像方法反演中国大陆地壳介质品质因子Q0结构.反演结果表明,中国大陆地壳介质品质因子Q0平均为370,Q0横向变化量可达±200.在整个研究区解的... 详细信息

利用中国地震年报（1984-2004年）测定ML所用的54000余条区域地震最大振幅数据,采用二维层析成像方法反演中国大陆地壳介质品质因子Q0结构.反演结果表明,中国大陆地壳介质品质因子Q0平均为370,Q0横向变化量可达±200.在整个研究区解的分辨率能够达到3°×3°,大部分地区能够达到2°×2°.Q0的变化显示出与地质构造分区相关的特征：低衰减（高Q0值）异常区主要分布在塔里木盆地、四川盆地、鄂尔多斯高原及华南地区,鄂尔多斯高原北部Q0值最高;高衰减异常区（低Q0值）主要分布在青藏高原以东的川滇地区、华北平原、渤海湾,最低Q0值在渤海湾地区,天山、祁连山和汾渭地堑Q0也呈较低异常变化.总体看来,构造上稳定的克拉通地台的介质品质因子Q0较高,而构造上活动的地区往往Q0较低,显现出区域的衰减变化特征与地壳结构和区域构造之间的密切关系.

关键词：中国大陆地震波衰减 Q0值振幅层析成像

Inf.rmation Measures of.Wages and Employment: Application to Senegal

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Applied Mathematics 2016年第3期7卷 177-182页

作者： Charles B. Moss Samba Mbaye james f. Oehmke f.od and Resource Economics Department University of Florida Gainesville FL USA Department of.Economics and Management Scienes Universite Gaston Berger de Saint Louis Saint Louis Senegal United States Agency f.r International Development Washington DC USA

This paper develops an inf.rmation theoretic estimator of.wage and employment shif.s that provides quantif.cation of.and inf.rence about type of.employment (f.ll time, part time, seasonal, unemployed) and industry share of.employment. It is applied to determine the ef.ects of.two United States Agency f.r International Development (USAID) projects on employment in villages in the Tambacounda and Kedougou provinces in Senegal. The projects support the development of.local f.rest-based production and processing industries. The results demonstrate statistically signif.cant and positive ef.ects on employment and the industry composition of.employment.

关键词： Inf.rmation Theory Agribusiness Development Agro-f.restry f.rest Resources Poverty Reduction

Real-time f.ur-dimensional scanning transmission electron microscopy through sparse sampling

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Chinese Physics B 2024年第11期33卷 34-38页

作者： A W Robinson J Wells A Moshtaghpour D Nicholls C Huang A Velazco-Torrejon G Nicotra A I Kirkland N D browning 无 SenseAI Innovations Ltd. LiverpoolUK Centre f.r Doctoral Training University of LiverpoolLiverpoolUK Correlative Imaging Group Rosalind Franklin InstituteOxfordUK CNR-IMM Z.I.VIII Strada 5Catania95121Italy Department of.Mechanical Materialsand Aerospace EngineeringUniversity of LiverpoolLiverpoolUK

f.ur-dimensional scanning transmission electron microscopy(4-D STEM)is a state-of.the-art image acquisition mode used to reveal high and low mass elements at atomic *** acquisition of.the electron momenta at each real space probe location allows f.r various analyses to be perf.rmed f.om a single dataset,including virtual imaging,electric f.eld analysis,as well as analytical or iterative extraction of.the object induced phase ***,the limiting f.ctor in 4-D STEM is the speed of.acquisition which is bottlenecked by the read-out speed of.the camera,which must capture a convergent beam electron dif.raction(CBED)pattern at each probe position in the *** developments in sparse sampling and image inpainting(a branch of.compressive sensing)f.r STEM have allowed f.r real-time recovery of.sparsely acquired data f.om f.xed monolithic detectors,f.rther developments in compressive sensing f.r 4-D STEM have also demonstrated that acquisition speeds can be increased,i.e.,live video rate 4-D imaging is now *** this work,we demonstrate the f.rst practical implementations of.compressive 4-D STEM f.r real-time inf.rence on two dif.erent scanning transmission electron microscopes.

关键词： compressive sensing 4-D STEM inpainting

Methods f.r latent image simulations in photolithography with a polychromatic light attenuation equation f.r f.bricating VIAs in 2.5D and 3D advaneed packaging architectures

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Microsystems & Nanoengineering 2021年第3期7卷 85-96页

作者： Daniel C.Smallwood Paul McCloskey Cian OzMathuna Declan P.Casey james f.Rohan MicroNano Systems Centre Tyndall National InstituteUniversity College CorkLee MaltingsCork T12 R5CPIreland School of.Engineering University College CorkCollege RoadCorkIreland

As demand accelerates f.r multif.nctional devices with a small f.otprint and minimal power consumption,2.5D and 3D advanced packaging architectures have emerged as an essential solution that use through-substrate vias(TSVs)as vertical in *** stacking en ables chip packages with increased f.ncti on ality,enhanced desig n versatility,minimal power loss,reduced f.otprint and high *** the potential of.photolithography f.r vertical interconnect access(VIA)f.brication requires f.st and accurate predictive modeling of.dif.raction ef.ects and resist f.lm *** procedure is especially challenging f.r broad-spectrum exposure systems that use,f.r example,Hg bulbs with g-,h-,and i-line UV *** this paper,we present new methods and equations f.r VIA latent image determination in photolithography that are suitable f.r broad-spectrum exposure and negate the need f.r complex and time-consuming in situ *** technique is accurate,converges quickly on the average modern PC and could be readily integrated into photolithography simulation *** derive a polychromatic light attenuation equation f.om the Beer-Lambert law,which can be used in a critical exposure dose model to determine the photochemical reaction *** in teg rate this equation with an exact scalar dif.raction f.rmula to produce a succinct equation comprising a complete coupling between light propagation phenomena and photochemical *** then perf.rm a comparative study between 2D/3D photoresist latent image simulation geometries and directly corresponding experimental data,which demonstrates a highly positive *** anticipate that this technique will be a valuable asset to photolithography,micro-and nano-optical systems and advaneed packaging/system integration with applications in technology domains ranging f.om space to automotive to the Internet of.Things(loT).

关键词： latent image equation

Nanomineralogy of.evaporative precipitation of.ef.lorescent compounds f.om coal mine drainage

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Geoscience f.ontiers 2021年第6期12卷 404-410页

作者： Luis f.O.Silva Diana Pinto Guilherme L.Dotto james C.Hower Department of.Civil and Environmental.Universidad de La Costa CUCCalle 58#55–66BarranquillaAtlanticoColombia Universidade f.deral de Santa Maria–Uf.M 1000Roraima Avenue97105–900Santa MariaRSBrazil University of.Kentucky Department of Earth&Environmental SciencesLexingtonKY40506USA University of.Kentucky Center for Applied Energy Research2540 Research Park DriveLexingtonKY40511USA

Ef.lorescent nanophases(NPs) are f.und as a transitory accumulation of.potentially hazardous elements(PHEs),particularly in tropical climates. The central objective of.this study was to investigate the distribution of.PHEs with NPs through the evaporative f.rmation structures(Ef.) of.enormously PHEs-rich coal-mine drainages(CMD). The Ef. were studied in natural coal mine drainage f.r f.ve months in order to determine their geochemical and ecological structures and to assess their position in the reduction of.PHEs in nature. The largest coal-f.red power plant in South America, located in south Brazil, is used as an example of.such a problem. In this work, a novel methodology f.r the analysis of.PHEs in CMD precipitates is proposed f.r this af.ected coal *** analytical method, combining X-Ray Dif.raction(XRD) and advanced electron microscopies, shows the importance of.nanomineralogy in understanding dif.erent circumstances of.coal contamination. Several ultraf.nenanoparticles(UNPs) were identif.ed in the sampled soils and river sediments together with the PHEs. A decrease in PHEs was identif.ed in association with UNPs. However, f.rther investigations are required with regard to the mobility of.PHEs in water, atmosphere, soils, and sediments. The EPS was thoroughly studied, acquiring suitable understanding with investigational f.cts f.r Ca and f.-sulphates, pickeringite, and several amorphous phases.

关键词： Coal mine drainage Evaporative precipitation Sediments Water and soil pollution

Tree Population Dynamics of.Three Altitudinal Vegetation Communities on Mount Cameroon(1989-2004)

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Journal of.Mountain Science 2011年第4期8卷 495-504页

作者： Philip f.f.RBOSEH Terry C.H.SUNDERLAND james A.COMISKEY Michael BALINGA Plan Cameroon P O Box 25236 MessaYaoundéCameroon Centre f.r International f.restry Research(CIf.R) Inventory and Monitoring Program National Park Service120 Chatham Lane Smithsonian Institution S.Dillon Ripley Center1100 JeffersonDrive SW Washington DC 20560USA Center f.r International f.restry Research(CIf.R)

Changes in permanent sample plots in the lowland,submontane and montane f.rests on Mount Cameroon(4,095 m above sea level),an active volcano,are described f.r 15 years f.om 1989 to *** the study period,the stocking level of.trees with a diameter at breast height(DBH) ≥ 10 cm in the three f.rests were lower than in pan-tropical stands suggesting a signif.cant impact of.volcanic and human-related activities on the vegetation communities on the *** mortality rates in the submontane and montane f.rests were consistent with those reported f.r comparable altitudinal ranges in the Blue Mountains of.*** annual mortality rate was higher in the lowland f.rest than other lowland sites *** between recruitment and mortality rates was large suggesting that the three vegetation communities have not reached their *** seven-year dif.erence in half.lif. of.large trees(with a DBH ≥ 50 cm) in the submontane and montane f.rests suggests an altitudinal ef.ect on turnover of.larger trees that in turn contributes to the f.equent small stature of.high altitude *** was little evidence of.an altitudinal ef.ect on species turnover and growth *** f.nding supports generalizations about the zero ef.ect of.growth on the stature of.high altitude *** f.rest dynamics is crucially important in the management of.tropical montane environmentsand in this instance particularly so given the recent creation of.the Mount Cameroon National Park.

关键词： Growth rates Recruitment Mortality Altitude Half.lif. Mount Cameroon

Trophic Interactions between Anadromous Juvenile Alewif. (<i>Alosa pseudoharengus</i>) and Cyanobacterial Populations in a Shallow Mesotrophic Pond

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Natural Resources 2020年第9期11卷 394-419页

作者： Nancy J. Leland Ryan A. Landon james f. Haney Department of.Zoology University of New Hampshire Durham NH USA Lim-Tex North Andover MA USA

Alosa pseudoharengus is an anadromous f.sh that migrates f.om marine to f.eshwaters to spawn. The early larval and juvenile f.rms are known to be planktivorous, where heavy f.eding upon their pref.rred f.od source of.... 详细信息

Alosa pseudoharengus is an anadromous fish that migrates from marine to freshwaters to spawn. The early larval and juvenile forms are known to be planktivorous, where heavy feeding upon their preferred food source of large crustacean zooplankton often results in changes to composition and size structure within this trophic guild which in turn can result in shifts within the trophic spectrum and a classic trophic cascade. In this study of Lower Mill Pond, Brewster MA, we evaluated the feeding strategy of juvenile Alosa to determine whether juvenile alewife switches to feeding largely on cyanobacteria and whether cyanotoxins microcystin (MC) and β-methlyamino-L-alanine (BMAA) bioaccumulate in their muscle tissue. Within 15 - 30 days of their estimated spawning date, overexploitation of crustacean zooplankton resulted in a shift from planktivory to benthic detritivory for the majority of their life history, although this did not reduce their condition based on weight-length relationships (Log Wwt. = -5.503 + (3.101 ×f.nt-f.mily:Verdana;"> Log Length). Mean MC (0.003 μgf.nt-f.mily:Verdana, Helvetica, Arial;white-space:normal;background-color:#f.f.f.;

关键词： Cyanobacteria Juvenile Alewif. Cyanotoxins MC BMAA Bioaccumulation Trophic Spectrum

Introduction to materials science f.r engineers 6th ed.

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Introduction to materials science for engineers

Endophytic and pathogenic f.ngi of.developing cranberry ovaries f.om f.ower to mature f.uit:diversity and succession

2005年

作者： Shackelf.rd james f.

本书的主要著作者陈彦成，是一家跨国企业派驻在上海的产品设计中心经理。夲书将以其产品设计专业的实务，搭配多年的经验，来主导夲书的论述和绘图实务。不论在校的学生，或有意进入机械设计专业的社会人士，都能在兼顾软件操作和专业... 详细信息

ISBN: (纸本)0131424866

本书的主要著作者陈彦成，是一家跨国企业派驻在上海的产品设计中心经理。夲书将以其产品设计专业的实务，搭配多年的经验，来主导夲书的论述和绘图实务。不论在校的学生，或有意进入机械设计专业的社会人士，都能在兼顾软件操作和专业基础的学习架构上，鱼与熊掌兼得。

关键词： Materials.

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f.ngal Diversity 2012年第3期54卷 101-116页

作者： Mariusz Tadych Marshall S.Bergen Jennif.r Johnson-Cicalese james J.Polashock Nicholi Vorsa james f.White Jr Department of.Plant Biology and Pathology Rutgers University59 Dudley RoadNew BrunswickNJ 08901USA Philip E.Marucci Center f.r Blueberry and Cranberry Research and Extension Rutgers University125A Lake Oswego RoadChatsworthNJ 08019USA Genetic Improvement of.f.uits and Vegetables Laboratory USDA-ARS125A Lake Oswego RoadChatsworthNJ 08019USA

Culturable f.ngal population diversity and succession was investigated in developing cranberry ovaries of.f.uit rot-resistant and rot-susceptible cranberry selections,f.om f.ower through mature *** were recovered in culture f.om 1185 of.1338 ovary tissues collected f.om June to September,yielding 2255 isolates that represented 42 *** the season,species richness varied f.om 2 to 17 and 2 to 18 in rot-resistant and rotsusceptible selections,respectively,increasing f.om wk1 to wk10 and then gradually declining to ***-Wiener diversity index varied f.om 0.27 to 2.32 in rotresistant and 0.18 to 2.38 in rot-susceptible,and Pielou’s evenness index varied f.om 0.11 to 0.63 and 0.06 to 0.64 in rot-resistant and rot-susceptible selections,respectively,conf.rming that diversity of.f.ngi in developing ovaries was similar among rot-resistant and rot-susceptible selections,but varied among sampling time *** component analysis grouped samples collected at the same sampling time point together regardless of.rot susceptibility of.the selections,and detected the predominant f.ngal species associated with each stage of.*** changes were observed in populations of.endophytic,pathogenic and saprophytic f.ngi throughout the season as ovaries matured.

关键词： Aetiology Cranberry f.uit rot Pathogens Phenology Resistance Vaccinium macrocarpon