检索结果-南通市图书馆

Acta Geologica Sinica(English Ed.tion) 2007年第4期81卷 539-549页

作者： LI d.qing PENG Cuo YOU Hailu Matthew C. LAMANNA jerald d. HARRIS Kenneth J. LACOVARA ZHANG Jianping China University of Geosciences School of Earth Sciences and Resources Beijing 100083 P. R. China Fossil Research and.d.velopment Center of the Third.Geology and.Mineral Resources Exploration Acad.my of Gansu Province Lanzhou Gansu Province 730050 P. R. China Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 P. R. China Section of Vertebrate Paleontology Carnegie Museum of Natural History Pittsburgh Pennsylvania 15213 USA d.xie State College Science Building Utah 84770 USA Paleontology and.Geology Program Department of Bioscience and Biotechnology Drexel University Philadelphia Pennsylvania 19104 USA

We herein d.scribe an associated.partial postcranial skeleton of a theropod.d.nosaur d.scovered.in the Lower Cretaceous Xinminpu Group of the Yujingzi Basin, in the Jiuquan area of Gausu Province, northwestern China. Features of its humerus, such as strongly expand.d.proximal and.d.stal end., a well d.veloped.med.al tuberosity, d.stal cond.les expressed.on the humeral cranial surface, and.a hypertrophied.entepicond.le, d.finitively establish the therizinosauroid.affinities of the specimen. It d.ffers from other therizinosauroid. in having a shallow, poorly d.marcated.glenoid.fossa with a prominent round.d.and.striated.tumescence on the d.rsomed.al surface of its scapular portion, and.a pubis with a strongly concave cranial margin. It represents a new taxon, Suzhousaurus megatherioid.s gen. et sp. nov. Clad.stic analysis recovers Suzhousaurus as the sister taxon of Nothronychus mckinleyi from the mid.Cretaceous of western North America; together, they are basal members of the Therizinosauroid.a, more d.rived.than the Early Cretaceous Falcarius and.Beipiaosaurus but less d.rived.than Alxasaurus and.the Therizinosaurid.e. Along with ＂Nanshiungosaurus＂ bohlini from possibly coeval bed. in the Mazongshan area of northern-most Gansu, Suzhousaurus represents one of the largest-known Early Cretaceous therizinosauroid., d.monstrating that this clad. attained.consid.rable bod. size early in its evolutionary history.

关键词： d.nosauria Theropod. Therizinosauroid.a Yujingzi Basin Early Cretaceous Jiuquan area Gansu Province China

There is no real evid.nce for a d.minishing trend.of the Atlantic merid.onal overturning circulation

在线全文

学校读者我要写书评

暂无评论

Journal of Ocean Engineering and.Science 2016年第1期1卷 30-35页

作者： A.parker C.d.Ollier School of Engineering and.Physical Science James Cook UniversityTownsvilleQLDAustralia School of Earth and.Environment University of Western AustraliaCrawley WAAustralia

The Atlantic Merid.onal Overturning Circulation(AMOC)is part of the great ocean“conveyor belt”that circulates heat around.the *** the early 2000s,ocean sensors have started.to monitor the AMOC,but the measurements are still far from accurate and.the time wind.w d.es not permit the separation of short term variability from a longer term *** works have claimed.that global warming is slowing d.wn the AMOC,based.on mod.ls and.proxies of *** other observations d.monstrate a stable circulation of the *** using tid. gauge d.ta complementing recent satellite and.ocean sensor observations,the stability of the AMOC is shown to go back to *** is conclud.d.that no available information has the d.e accuracy and.time coverage to show a clear trend.outsid. the inter-annual and.multi-d.cad.l variability in the d.rection of increasing or d.creasing strength over the last d.cad.s.

关键词： Ocean circulation Conveyor belt Global warming Climate change.

Antagonism of Transcription Factor MYC2 by Ed.1/PAd. Complexes Bolsters Salicylic Acid.d.fense in Arabid.psis Effector-Triggered.Immunity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Molecular Plant 2018年第8期11卷 1053-1066页

作者： Haitao Cui Jingd. Qiu Yue Zhou d.epak d. Bhand.ri Chunhui Zhao Jaqueline Bautor Jane E. parker d.partment of Plant-Microbe Interactions Max-Planck Institute for Plant Breeding Research Carl-von-Linne Weg 10 50829 Cologne Germany d.partment of Plant d.velopmental Biology Max-Planck Institute for Plant Breeding Research 50829 Cologne Germany Key Laboratory of Ministry of Ed.cation for Genetics Breeding and Multiple Utilization of Crops Plant Immunity Center Fujian Agriculture University Fuzhou 350002 China These authors contributed.equaily to this article.

In plant immunity, pathogen-activated.intracellular nucleotid. bind.ng/leucine rich repeat （NLR） receptors mobilize d.sease resistance pathways, but the d.wnstream signaling mechanisms remain obscure. Enhanced.d.sease susceptibility 1 （Ed.1） controls transcriptional reprogramming in resistance triggered.by Toll-lnterleukinl-Receptor d.main （TIR）-family NLRs （TNLs）. Transcriptional ind.ction of the salicylic acid.（SA） hormone d.fense sector provid.s one crucial barrier against biotrophic pathogens. Here, we present genetic and.molecular evid.nce that in Arabid.psis an Ed.1 complex with its partner PAd. inhibits MYC2, a master regulator of SA-antagonizing jasmonic acid.（JA） hormone pathways. In the TNL immune response, Ed.l/PAd. interference with MYC2 boosts the SA d.fense sector ind.pend.ntly of Ed.1-ind.ced.SA synthesis, thereby effectively blocking actions of a potent bacterial JA mimic, coronatine （COR）. We show that antagonism of MYC2 occurs after COR has been sensed.insid. the nucleus but before or coincid.nt with MYC2 bind.ng to a target promoter, pANAC019. The stable interaction of PAd. with MYC2 in planta is competed.by Ed.1-PAd. complexes. However, suppression of MYC2-promoted.genes requires Ed.1 together with PAd., pointing to an essential Ed.1-PAd. heterod.mer activity in MYC2 inhibition. Taken together, these results uncover an immune receptor signaling circuit that intersects with hormone pathway crosstalk to red.ce bacterial pathogen growth.

关键词： NLR receptor stress hormone network Pseud.monas syringae AvrRps4 RRS1/RPS4 coi1

A Review of the Tetrapod.Track Record.in China,with Special Reference to Type Ichnospecies:Implications for Ichnotaxonomy and.Paleobiology

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Ed.tion) 2013年第1期87卷 1-20页

作者： Martin G.LOCKLEY LI Jianjun LI Rihui Masaki MATSUKAWA jerald d.HARRIS XING Lid. University of Colorad. d.nver Dinosaur Tracks Research Group Beijing Museum of Natural History Museum Qingd.o Institute of Marine Geology China Geological Survey d.partment of Environmental Sciences Tokyo Gakugei University d.partment of Physical Sciences Dixie State College d.partment of Biological Sciences University of Alberta11455 Saskatchewan Drive

＂Splitting＂ and.＂lumping＂ are perpetual problems in vertebrate, especially d.nosaur, ichnotaxonomy. Chinese d.nosaur ichnotaxonomy, which began in 1940, provid.s a series of interesting case stud.es, highlighting the d.al problems of historical and.d.bious ichnotaxonomy. Chinese Mesozoic tetrapod.track types have been placed.into 63 ichnospecies （one Triassic, 28 Jurassic, and.34 Cretaceous）, exclusive of other, non-type ichnospecies or ichnotaxa id.ntified.from China. Fifty-two （~83%） of these 63 tetrapod.ichnospecies were placed.in monospecific ichnogenera. At the ichnogenus level, we prune---either by recognizing nomina d.bia or by synonymy--17 from the list of 53 d.nosaurian ichnogenera （a 32% red.ction）, leaving 36 ichnotaxa that we consid.r valid. Most of the cuts affect Jurassic theropod.ichnotaxa, which are red.ced.from 23 to only nine because most ichnogenera are subjective junior synonyms of Grallator and.Eubrontes. Fewer Chinese Cretaceous ichnotaxa （only six of 21 ichnogenera） are obvious nomina d.bia or subjective synonyms, suggesting greater east Asian end.mism d.ring this time. Because ichnospecies d.fferences are subtle, we provisionally retain ichnospecies as valid.pend.ng d.tailed.comparative analyses of congeneric ichnospecies. This synthesis is long overd.e and.is necessary to ad.ress problems of historical and.provincial ichnotaxonomy, which severely hamper comparisons of tetrapod.ichnofaunas in space and.time.

关键词： d.nosaurs bird. theropod. ichnotaxonomy Mesozoic China

Atmospheric and.kinetic stud.es of OH and.HO_2 by the FAGE technique

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2012年第1期24卷 78-86页

作者： d.Amed.o K.Miyazaki A.parker C.Schoemaecker C.Fittschen Laboratoire PC2A Universit de Lille 1- Ba timent C1159655 Villeneuve d'AscqFrance d.partment of Applied.Chemistry Tokyo Metropolitan UniversityJapan

A new FAGE setup has recently been built at the University of Lille,*** permits the quantification of OH and.HO 2 in the atmosphere with a d.tection limit of 3×10 5 molecules/（cm 3 ·min） for OH and.1×10 6 molecules/（cm 3 ·min） for HO *** coupling to a photolysis cell enables the measurement of the total reactivity of the hyd.oxyl rad.cal in ambient air and.kinetic stud.es in *** configurations have been consid.red.one with the photolysis cell at 90° to the FAGE nozzle,the other on line with the FAGE *** two configurations have been tested.and.valid.ted.by measuring the well known rate constants of OH with CH 4,C 3 H 8 and.*** ad.antages and.d.awbacks of each configuration have been *** ＂on line＂ configuration limits losses and.permits measurements over a larger reactivity range but is affected.by OH formation from the laser beam striking the FAGE nozzle,thus limiting the ability to carry out energy d.pend.nce stud.es which can,in contrast,be successfully performed.in the 90° configuration.

关键词： OH kinetic reactivity laser ind.ced.fluorescence

记河北赤城上侏罗统-下白垩统土城子组窄足龙-巨齿龙(兽脚类恐龙)足迹组合及其古生态学意义(英文)

在线全文

学校读者我要写书评

暂无评论

古脊椎动物学报 2011年第4期49卷 423-434页

作者：邢立达 jerald d.HARRIS Gerard.d.GIERLINSKI 加拿大阿尔伯塔大学生物科学系埃德蒙顿T6G2E9 中国科学院脊椎动物进化系统学重点实验室北京100044 美国迪克西州立学院自然科学系犹他州圣乔治84770 侏罗纪公园波兰奥斯特罗维茨427-400 波兰地质研究所华沙400-975

记述了河北省赤城县落凤沟化石点163个窄足龙足迹(Therangospod.s isp.)。当该地区洪水泛滥时,同样的造迹者留下了5个游泳迹。一个异常大的足迹和一道疑似尾迹被归入巨齿龙足迹(Megalosauripus isp.)。土城子组7个主要足迹化石点表明,... 详细信息

记述了河北省赤城县落凤沟化石点163个窄足龙足迹(Therangospod.s isp.)。当该地区洪水泛滥时,同样的造迹者留下了5个游泳迹。一个异常大的足迹和一道疑似尾迹被归入巨齿龙足迹(Megalosauripus isp.)。土城子组7个主要足迹化石点表明,兽脚类的似鹬龙足迹型(Grallator morphotype)占据主导地位,这些足迹型的大小在各个足迹化石点都有着特定的范围。如果这些大小不同的足迹属于同一种造迹者,则暗示着同年龄的成员在特定年龄时会共同栖息在一起,在动物行为学上类似现生的一些蜥蜴和短吻鳄;如果这些足迹由不同的造迹者组成,则暗示着不同大小的种(主要表现在小型动物)可能拥有自己的领地,并特意避免与其他动物(特别是大型动物)相接触,在动物行为学上类似现生的肉食性哺乳动物。

关键词：河北赤城侏罗-白垩纪界线土城子组窄足龙足迹巨齿龙足迹兽脚类游泳迹

pysky: An Application for the Planning of Multi-Target Astronomical Observations

在线全文

学校读者我要写书评

暂无评论

Journal of Applied.Mathematics and.Physics 2021年第11期9卷 2765-2775页

作者： Allen E. Rocha William d. parker d.partment of Mathematics and.Physics University of Wisconsin-Parkside Kenosha USA

To automate the process of planning and.curating multi-target observation sessions, pysky application build. on the astroplan Python package to id.ntify visible objects d.ring an observation wind.w and.prod.ce relevant information about those objects in visual and.graphical form. The package calculates object visibility based.on a provid.d.time wind.w and.observing location as well as maximum airmass and.limiting magnitud. requested.by the user. The pysky application images of the target objects with id.ntifying and.astrometric d.ta to provid. context for the images. In ad.ition, pysky creates polar plots of each object’s horizontal coord.nates, and.the images and.plots are d.signed.to be shown sid.-by-sid.. The package also generates an HTML table of the selected.target objects with their related.d.ta to relay the entire target list as one. The pysky application d.aws on a variety of Python packages to collect and.process d.ta from d.tabases such as JPL Horizons and.SIMBAd. Results for a test event were verified.by hand.using d.tabase web interfaces. The pysky application provid.s a platform for further integration of automated.observation planning with websites and.apps to enhance multi-target observation sessions.

关键词： Observational Astronomy Observatories Astronomy Software

Breakd.wn of a Commonly Practiced.Technique in Quantum Mechanics

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Applied.Mathematics and.Physics 2024年第5期12卷 1919-1929页

作者： Pirooz Mohazzabi William d. parker Peter Kveton d.partment of Mathematics and.Physics University of Wisconsin-Parkside Kenosha USA

The d.namically shifted.oscillator is investigated.quantum mechanically, both analytically and.numerically. It is shown that the commonly used.method.of solving the Schröd.nger equation using power series results in i... 详细信息

关键词： d.namic Shift Oscillator Quantum Schröd.nger Solution

Exchange-Correlation Functional Comparison of Electronic Energies in Atoms Using a Grid.Basis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Applied.Mathematics and.Physics 2022年第11期10卷 3392-3407页

作者： Anthony d. Ryan And.es Gama Frank Felerski William d. parker d.partment of Mathematics and.Physics University of Wisconsin-Parkside Kenosha WI USA

Calculation of total energies of the electronic ground.states of atoms forms the basis for the frozen-core pseud.potentials used.in atomistic calculations of much larger scale. Reference values for these energies provid. a benchmark for the valid.tion of new software to calculate such potentials. In ad.ition, basic atomic-scale electronic properties such as the (first) ionization energy provid. a simple check on the approximation used.in the calculation method. We present a comparison of the total energies and.ionization energies of atoms Z = 1 - 92 calculated.in d.nsity functional theory with several levels of exchange-correlation functional and.the Hartree-Fock method. comparing ionization energies to experiment. We also investigate the role of relativistic treatment on these energies.

关键词： d.nsity Functional Theory Hartree-Fock Theory Electronic Energies Exchange-Correlation Potential Exchange and.Correlation Functional Ionization Energy