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Rethinking the egg

National Science Review 2024年第6期11卷 81-82页

作者： michael j.benton School of Earth Sciences University of Bristol

Our image of early dinosaur eggs must change. Early dinosaur eggs are portrayed as soft-shelled, like those of modern lizards or snakes [1], and yet all the evidence is that early dinosaurs at least laid leathery-shel...

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Universal Hyperthermal Model for Mass Extinctions

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j.urnal of Earth Science 2024年第2期35卷 704-707页

作者： michael j.benton Paleobiology Research Group School of Earth SciencesUniversity of BristolLife Sciences BuildingTyndall AvenueBristolBS81TQUK

INTRODUCTION Earth scientists have long sought universal features of past extinction *** can be argued that each past extinction event was a singularity,caused by combinations of circumstances that are unique in each case,and therefore that the search for common causes is ***,a key feature of the uniformitarian approach to geology is that past processes are the same as modern-day processes and,with that in mind,earth scientists are keen to use their knowledge to contribute some understanding to the study of the present and future climate crisis.

关键词： extinction singularity Extinction

How Life Recovers from Near-Annihilation:The end-Permian Crisis and Its Aftermath

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How Life Recovers from Near-Annihilation:The end-Permian Cri...

Deining the discipline of geobiology

中国古生物学会第26届学术年会

作者： michael j. benton Department of Earth Sciences University of Bristol Bristol BS8 1RJ U.K.

Life came closest to complete annihilation252Myr(million years)ago,in the end-Permian mass extinction(EPME).The EPME killed up to96%of all marine species and70%of terrestrial vertebrate *** largest crash in global bio...

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National Science Review 2014年第4期1卷 483-485页

作者： michael j.benton Shucheng Xie School of Earth Sciences University of Bristol State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences

One of the fundamental questions in science,but also for any intelligentperson,is‘What is the diference between life and non-life?’Philosophers havedebated this for centuries,and alchemists and novelists have explor... 详细信息

关键词： Deining the discipline of geobiology

Volumetric measurement of rock movement using photogrammetry

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International j.urnal of Mining Science and Technology 2016年第1期26卷 123-130页

作者： benton Donovan j. Iverson Stephen R. Martin Lewis A. j.hnson j.ffrey C. Raffaldi michael j. National Institute for Occupational Safety and Health. Spokane 99207 USA

NIOSH ground control safety research program at Spokane,Washington,is exploring applications of photogrammetry to rock mass and support monitoring. This paper describes two ways photogrammetric techniques are being used. First,photogrammetric data of laboratory testing is being used to correlate energy input and support deformation. This information can be used to infer remaining support toughness after ground deformation events. This technique is also demonstrated in a field ***,field photogrammetric data is compared to crackmeter data from a deep underground *** were found to average 8 mm,but have produced results within 0.2 mm of true displacement,as measured by crackmeters. Application of these techniques consists of monitoring overall fault activity by monitoring multiple points around the crackmeter. A case study is provided in which a crackmeter is clearly shown to have provided insufficient information regarding overall fault ground *** is proving to be a useful ground monitoring tool due to its unobtrusiveness and ease of use.

关键词： PhotogrammetryGround controlMonitoringDeep vein miningVolume calculationCrackmeter

Exceptionally Preserved Conodont Natural Assemblages from the Middle Triassic Luoping Biota,Yunnan Province,China:Implications for Architecture of Conodont Feeding Apparatus

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j.urnal of Earth Science 2023年第6期34卷 1762-1776页

作者： j.nyuan Huang Carlos Martinez-Perez Qiyue Zhang Kexin Zhang Mao Luo Wen Wen Changyong Zhou Xiao Min Zhixin Ma Tao Xie michael j.benton Philip C.j.Donoghue Chengdu Center China Geological Survey(Geosciences Innovation Center of Southwest China)Chengdu 610081China Cavanilles Institute of Biodiversity&Evolutionary Biology University of Valencia46980 ValenciaSpain Institute of Geological Survey China University of GeosciencesWuhan 430074China State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and PaleoenvironmentChinese Academy of SciencesNanjing 210008China School of Earth Sciences and Engineering Nanjing UniversityNanjing 210023China School of Ocean Sciences China University of GeosciencesBeijing 100083China School of Earth Sciences University of BristolBristol BS81TQUK

Articulated natural assemblages contain direct evidence of the element numbers,morphologies,positions and structures for reconstructing the feeding apparatuses of conodont animals,but these kind of materials are very rare in fossil *** we report ten new conodont natural assemblages from Member II of the Guanling Formation in Luoping County,eastern Yunnan Province,southwestern *** assemblages were obtained from the fossil-bearing layers of the Luoping Biota,dated to the early Middle Triassic Anisian stage(Pelsonian substage).These fossiliferous laminated limestones mainly consist of calcites and dolomites,with platy clay minerals and pyrites as subordinate components,indicating that the conodont assemblages were preserved in a lower energy and anoxic sedimentary *** new natural assemblages preserve the primary collapse orientations of the Nicoraella feeding apparatus from the Luoping Biota,showing the relative original positions of the S,M and P elements,that could be further used to refine the architecture of this apparatus in space variable M elements and the position unclear P1 *** previously reported three-dimensional and bilaterally symmetrical fused clusters,we statistically analyze the size of the positional homogenous elements within different sized materials,in particular S4,S3,or S2 elements,indicates that elements ontogenic changes do not affect the apparatus *** of Nicoraella apparatus remains stable in the process of ontogeny,so our reconstructed model is *** is the first time that ample types of materials have been used to restore a conodont apparatus within one genus,namely natural assemblages(articulated and disarticulated),fused clusters(articulated,disarticulated,compressed,and relatively three-dimensional),and abundant discrete elements,*** materials together record the most complete information on architecture in the gondolelloid apparatuses,thus enabling us

关键词： conodont natural assemblage architecture fused cluster size variation limestone MiddleTriassic southwestern China

Downhill running impairs peripheral but not central neuromuscular indices in elbow flexor muscles

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Sports Medicine and Health Science 2021年第2期3卷 101-109页

作者： Xin Ye Robert j.benton William M.Miller Sunggun j.on j.n Seob Song Department of Rehabilitation Sciences University of HartfordWest HartfordCTUSA Department of Health Exercise Scienceand Recreation ManagementUniversity of MississippiUniversityMSUSA School of Kinesiology Applied Health and RecreationOklahoma State UniversityStillwaterOKUSA

The purpose of this study was to examine the effects of a 1-h downhill running exercise on the elbow flexor muscles’neuromuscular *** adults(Control[CON]:n=9;Experimental[EXP]:n=8)completed this *** CON rested for 30 min while the EXP performed the downhill ***,10 min,24 h,and 48 h after the interventions,dependent variables(knee extensor muscle soreness,elbow flexion and knee extension isometric strength,elbow flexion resting twitch and voluntary activation[VA],and the biceps surface electromyography[EMG]amplitude)were *** extensor muscle soreness was significantly greater in the EXP than the CON group following the intervention throughout the entire 48 *** was accompanied by the greater decline in the knee extension strength in the EXP than the CON(mean±SD:-6.9±3.4%vs.1.0±3.2%,p=0.044).The elbow flexion strength,VA,and EMG amplitude were not affected by the ***,the decline of the elbow flexion resting twitch was greater in the EXP than the CON(±19.6±6.3%vs.8.7±5.9%,p=0.003).Therefore,the downhill running impaired the remote elbow flexor muscles at a peripheral level.

关键词： Muscle damage Twitch interpolation Voluntary activation Surface EMG Non-local effect

Tomato plant culture:in the field, greenhouse, and home garden

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Arts and culture : an introduction to the humanities / Rev. 1st ed.

2008年

作者： j. benton j.nes j..

来源：畅想之星图书光盘版（南... 评论

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