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长江中下游长江江豚种群数量研究

长江中下游长江江豚种群数量研究

Rock mechanics for design of Brisbane tunnels and implications of recent thinking in relation to rock mass strength

野生动物生态与资源保护第四届全国学术研讨会

作者：赵修江王丁 Barlow,J. Pitman,R.l. Taylor,B.l. 王克雄魏卓张先锋李松海 barrett.l.a. Akamatsu,T. Turvey,S.T. Reeves,R.R. Stewart,B.S. Richlen,M. Brandon,J.R. 中国科学院水生生物研究所中国科学院研究生院 NOAA Fisheries Southwest Fisheries Science CenterLa Jolla CA 92037USA

长江江豚是唯一的江豚淡水亚种,仅分布于长江中下游及其主要附属湖泊中。为评价其种群现状,2006年11月至12月,我们在长江中下游干流江段进行了截线抽样法考察。考察采用两条大型考察船,航程约3400千米。根据动物密度,考察区域被划分为...

长江江豚是唯一的江豚淡水亚种,仅分布于长江中下游及其主要附属湖泊中。为评价其种群现状,2006年11月至12月,我们在长江中下游干流江段进行了截线抽样法考察。考察采用两条大型考察船,航程约3400千米。根据动物密度,考察区域被划分为三个江段进

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Journal of Rock Mechanics and Geotechnical Engineering 2019年第3期11卷 676-683页

作者： l.B.McQueen A.Purwodihardjo S.V.l.barrett Golder Associates Pty ltd. 124 Pacific HighwaySt.LeonardsNSW2065Australia Golder Associates Pty ltd. 147 Coronation DriveMiltonQueensland4064Australia Golder Associates Pty ltd. Building 7Botanicca Corporate Park570 e 588 Swan StreetRichmondVictoria3121Australia

This paper explores the potential implications of recent thinking in relation to rock mass strength for future tunnelling projects in Brisbane,Australia,particularly as they are constructed within deep horizons where the in situ stress magnitudes is *** mass failure mechanisms for the current tunnels in Brisbane are generally discontinuity controlled and the potential for stress-induced failure is relatively *** the road tunnels which have been constructed in Brisbane over the last 12 years,the strength of the more massive rock masses for continuum analysis has been estimated by the application of the Hoek-Brown(H-B)failure criterion using the geological strength index(GSI)to determine the H-B parameters mb,s and *** the last few years,alternative approaches to estimating rock mass strength for‘massive to moderately jointed hard rock masses’have been proposed by others,which are built on the work completed by *** and *** in this area over their joint *** paper explores one of these alternative approaches to estimating rock mass strength for one of the geological units(the Brisbane Tuff),which is often encountered in tunnelling projects in *** potential implications of these strength forecasts for future tunnelling projects are discussed along with the additional work which will need to be undertaken to confirm the applicability of such alternative strength criteria for this rock mass.

关键词： Rock mass strength Hoek-Brown(H-B)failure criterion Triaxial testing Brittle failure Brisbane Tuff

Perforated jejunal ulcer associated with gastric mucosa in a jejunal diverticulum

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World Journal of Clinical Cases 2014年第6期2卷 209-210页

作者： John Bunni Helen l barrett Tim A Cook Department of Surgery Gloucester-shire Royal Hospital Department of Pathology Gloucestershire Royal Hospital

Jejunal diverticula are rare and subsequent complications even more so. The usual small bowel diverticulum encountered by general surgeons is a Meckel's. These are embryological remnants of the vitello-intestinal duct and are on the anti-mesenteric surface of the terminal ileum. They may contain heterotopic gastric or pancreatic mucosa. Herein we explore the case of a young girl who presented with features of peritonitis secondary to a complication from a jejunal diverticulum. The case, pathology, complications and treatment of jejunal diverticulosis and heterotopic gastric mucosa in the jejunum are explored.

关键词： Jejunum Perforation Heterotopic gastric mucosa Meckel’s gastrointestinal diverticulum

Does the scent of a potential mate prevent the resorption of oocytes by apoptosis in Nauphoeta cinerea？

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Insect Science 2009年第5期16卷 393-398页

作者： Emma l. B. barrett Allen J. Moore Patricia J. Moore Centre for Ecology and Conservation School of Biosciences University of Exeter Cornwall Campus Penryn Cornwall UK

We expect organisms to have evolved mechanisms to gather and use the information available within their environments, to steer resource investment decisions toward the traits that will give the greatest fitness returns. Pheromones are social signals, a common purpose of which is to act as indicators of mate presence. Consequently, pheromones have the potential to act as signals to increase or maintain reproductive investment over that of competing life-history traits. In the cockroach, Nauphoeta cinerea （Oliver）, females pay costs of maintaining investment in reproduction when there are no males, and males produce pheromones that are known to effect female reproductive outcomes. Whether the pheromones have an influence on resource physiology is unknown. We subjected newly eclosed females to either a synthetic blend of male pheromones or control. We dissected females at 7, 12, 17 or 22 days. We measured apoptosis levels and size of all oocytes within the vitellerium, and measured dry fat body mass. Synthetic male pheromone blend did not have an effect on any measure of female reproductive or somatic resource physiology. Although negative results are always problematic, the success of the synthetic pheromone method in the past suggests that females may be insensitive to male pheromones in the pre-oviposition period, and may rely on mating stimulus rather than pheromone as the cue for oocyte maintenance and growth. Previous studies reporting effects of male pheromones on female reproduction suggest that the period of pheromone sensitivity may be between mating and birth.

关键词： apoptosis environment oocyte ovary pheromone predictable trade-off

New insights into the pathogenesis of intestina dysfunction:secretory diarrhea and cystic fibrosis

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World Journal of Gastroenterology 2000年第4期6卷 470-474页

作者： Kim E. barrett Professor and Vice-Chair for Research Department of MedicineUniversity of CaliforniaSan DiegoSchool of MedicineSan DiegoCA 92103USA

INTRODUCTIONA major function of the intestinal epithelium is to controlthe amount of fluid entering into and being absorbed fromthe *** healthy conditions,net fluid movementfollows an absorptive vector,although signif... 详细信息

关键词： gatrointestinal motility diarrhea/etiology cystic fibrosis intestinal secretions chlorides Crohn’s disease intestinal absorption

The evolution of plant reproductive ecology in China

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Journal of Plant Ecology 2015年第2期8卷 101-108页

作者： Spencer C.H.barrett Department of Ecology and Evolutionary Biology University of TorontoTorontoOntario M5S 3B2Canada

Scientific interest in plant reproduction has a long and venerable history going back to early European naturalists including Carl linnaeus,Christian Konrad Sprengel,Joseph Kölreuter,Fritz and Hermann Müller,George Henslow and of course,Charles *** can be considered the founder of modern plant reproductive *** three books(Darwin 1862,1876,1877)laid the conceptual foundation for the field,and many of the ideas they contain are still topics of active research(reviewed in barrett 2010).The turn of the 20th century saw the rediscovery of Mendel’s laws and breeding experiments on flowering plants played an important role in establishing many key elements of modern *** the 1940s,Fisher had developed the population genetic principles for theoretical analysis of the evolution of plant mating systems(Fisher 1941)。

关键词： reproductive plant evolution

Mechanisms for amplified mediator release from colonic mast cells:Implications for intestinal inflammatory diseases

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World Journal of Gastroenterology 2004年第5期10卷 617-619页

作者： Kim E.barrett Division of Gastroenterology Department of MedicineUniversity of CaliforniaSan DiegoSchool of Medicine San DiegoCA 92103USA

The mast cell is an enigmatic cell type whose physiological function has preoccupied large numbers of investigators for decadest. Some have concluded that the absence of mast cells is incompatible with life, at least in humans, because no human conditions have been documented where these cells are absent from the body. On the other hand, mice harboring specific mutations in certain growth factors, or their receptors, that

关键词： Colon Humans Inflammation Mediators Mast Cells Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S.

The Global Archive and the Future of Poetics

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Journal of Foreign languages and Cultures 2021年第1期5卷 94-108,156页

作者： barrett Watten Wayne State University

In defining“the global archive,”this essay refers,first of all,to the historical development of exhibitions in Germany that address a global horizon,a distinct cultural project since at least the *** 1945,modem art,which had been removed from public view by the Nazi state,was reintroduced as a project of reeducation as much as ***,beginning in 1955,exhibited modem and later artists in the destroyed buildings of the city of Kassel,and expanded its formal and cultural address to a global scale over its fifty-year *** itself became a kind of continuous archive of its own exhibition history,a mode of formal presentation that increasingly relied on the works it *** I read in detail the archival strategies and form of dOCUMENTA 13,arguably a highpoint of this effort to archive globality as it *** from Michel Foucault,Fredric Jameson,and Aijun Appadurai to the“critical regionalism”of Cheryl Herr and the“negative globality”of Alberto Moreiras assist in the project of comprehending the“archive as form,”seen in a series of artists working on a global scale.

关键词： documenta exhibition history globalization archives World War II 21st century art Germany

Modernity@Zero Hour:Three Women(lee Miller,Hannah Hoch,Anonyma)

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Journal of Foreign languages and Cultures 2020年第1期4卷 40-64页

作者： barrett Watten Wayne State University

This essay is a part of a longer work on literary and visual modernism at the“moment”of destruction in 1945:Stunde Null or Zero ***,I focus on the t4constructedness,'of universals via the material,psychological,and political destruction in Germany at war's *** this moment,destruction and universals interconnect in three temporal modes:anticipatory,punctual,and ***“punctual”universals,I read lee Miller’s war journalism,published in Vogue,in relation to her war and Holocaust photography,as uniting modernist aesthetic values and the“event”of *** the construction of“anticipatory”universals,I discuss the work of Hannah Hoch,dada painter and collagist,who emerged from internal exile in Berlin to participate in the first modernist exhibitions in the destroyed city after Stunde ***,the anonymously authored A Woman in Berlin,documenting the survival strategies to mass sexual predation by Soviet troops immediately at and after Stunde Null,extends from punctual accounts of destruction to a retrospective *** each case,modernist visual and verbal forms-and an ethical imperative to keep interpretive horizons open-negotiates between the“radical particularity”of the lived experience of destruction and universal *** constructedness of universals in modernist works anticipates the construction of political,ethical,and aesthetic universals in the global order after 1945.

关键词： modernism World War II feminism art history destruction universals