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668篇 您的检索式:作者名="Harper D"
    题名 作者 年代 出处 被引量
1华东志留纪最早期的华夏正形贝动物群及其宏演化意义显示文摘志留纪最早期的腕足动物群在文献中很少记录,与标准笔石相伴者更为稀罕。江西玉山志留系底部因发现Akidograptus ascensus带的笔石而确定该处盛产志留纪初期(鲁丹早期)、多样性较高的腕足动物群。根据组成、性质与层位,它与浙江江山、常山、淳安、余杭等7个地点的同期组合可统一命名为华夏正形贝动物群(Cathay-siorthis Fauna)。它包含了不同群集,都产自细碎屑岩(如泥岩)中,其分布主要受海水深度和距华夏古陆远近的控制。这个动物群生长在奥陶纪大灭绝后的残存期,文章探讨了它的残存特征。研究揭示,奥陶纪末大灭绝对腕足动物演化的一个实质性的贡献在于制约了奥陶纪占优势的A组(正形贝/扭月贝大类群:发育铰合面、窗齿型铰齿、正扭型主突起和简单腕器官)的繁盛态势,滋生了B组(五房贝/无洞贝大类群:发育后转面、弓齿型铰齿和复杂腕器官但缺失正扭型主突起)在志留纪的优势,造成腕足动物宏演化历程中的一次重大转折。文中提出'优势替代滞后型式(Pattern of lag of dominance replacement)',专指A组类群的优势被B组类群替代的时间不是紧跟在奥陶纪末大灭绝之后,而是距大灭绝结束约4Ma之后。文中描记新属华夏正形贝(Cathaysiorthis gen.nov.)。戎嘉余 黄冰 詹仁斌 D A T Harper 2008古生物学报2008,47,2:17
2急性儿茶酚胺暴露引起可逆的无心脏细胞再生的心肌细胞损伤显示文摘儿茶酚胺增加心脏收缩力,但暴露于高浓度儿茶酚胺或长时间暴露可引起心脏损伤。最近的一项研究表明,小鼠单次皮下注射异丙肾上腺素(isoproterenol,ISO;200 mg/kg)导致急性心肌细胞死亡(8%-10%),但在1个月之内心脏完整修复。心脏再生是通过内源性原癌基因蛋白质cKit+心脏干细胞介导新的心肌细胞形成。刘莉 叶鹏 Wallner M Duran JM Mohsin S Troupes CD Vanhoutte D Borghetti G Vagnozzi RJ Gross P Yu D Trappanese DM Kubo H Toib A Sharp TE Harper SC Volkert MA Starosta T Feldsott EA Berretta RM Wang T Barbe MF Molkentin JD Houser SR 2016中华高血压杂志2016,24,8:4
3Mobile Agent and Security显示文摘Greenberg M S Byington L C Harper D G 1998IEEE Communication Magazine1998,36,7:2
4Surface disturbance of cryptobiotic soil crusts: Nitrogenase activity,chlorophyll content,and chlorophyll degradation显示文摘Belnap J Harper K T Warren S D 1994Arid Soil Research and Rehabilitation1994,8,:1
5Ketamine:a review of its pharmacologic properties and use in ambulatory anesthesia显示文摘Haas D A Harper D G 0,,03:1
6Predictive and prognostic factors in small cell lung cancer: current status显示文摘Yip D Harper PG 2000Lung Cancer2000,28,3:1
7Communication with calcium显示文摘Sanders D Brownlee C Harper J F 1999Plant Cell1999,11,:1
8Increasing hydroxyapatite incorporation into poly(methylmethacrylate)cement increases osteoblast adhesion and response显示文摘DALBY M J SILVIO L D HARPER E J 2002Biomaterials2002,23,2:1
9PAST: Paleontological Statistics Software Package for Education and Data Analysis显示文摘ф Hammer D A T Harper P D Ryan 2001Palaeontologia Electronica2001,4,1:1
10Magnetocaloric effect in NiMnGa particles produced by spark erosion显示文摘TANG Y J SOLOMON V C SMITH D J HARPER H BERKOWITZ A E 2005J Appl Phys2005,97,309:1
11Natural emis- sions of chlorine-containing gases: Reactive chlorine emissionsin- ventory 显示文摘KhalilMA K Moore R M Harper D B 1999Journal of GeophysicalResearch1999,104,:1
12The development of Akabane virus-induced congenital abnormalities in cattle 显示文摘Kirkland P D Barry R D Harper P A 1988Vet Rec1988,122,24:1
13Per- ceived risk and the consumer buying process, Internet airline reservations显示文摘Cunningham L F Gerlach J H Harper M D 2005International Journal of Ser-vice and Market2005,16,4:1
14Transplantation of BDNF-secreting mesenchymal stem cells provides neuroprotection in chronically hypertensive rat eyes显示文摘Harper MM Grozdanic SD Blits B Kuehn MH Zamzow D Buss JE 2011Invest Optuhalmol Vis Sci2011,52,7:1
15Surface disturbance of cryptobiotic soil crusts: nitrogenase activity, chlorophyll content and chlorophyll degradation 显示文摘Belnap J Harper K T Warren S D 1994Arid Soil Research and Rehabilitation1994,8,:1
16Mycoplmgous grazing and food preference of Proisotoma minuta ( Collembola: Isotomidae) and Onychiurus encarpatus (Collembola: Onychiuridae) 显示文摘Lartey R T Curl E E Peterson C M Harper J D 1989Environmental Entomology1989,,18:1
17Communica-ting with calcium显示文摘Sanders D Brownlee C Harper J F 1999Plant Cell1999,11,:1
18Structure and phase transformation of ferromagnetic shape memory alloy Ni49Mn30Ga21 fine particles prepared by spark erosion显示文摘TANG Y J SMITH D J HU H SPADA F E HARPER H BERKOWITZ A E 2003IEEE Trans Magn2003,39,:1
19Urea kinetics of a carnivore, Felix silvestris catus显示文摘Russell K Lobley G E Rawlings J Millward D J Harper E J 2000British Journal of Nutrition2000,84,:1
20Report of two planned interim analyses in a randomized muhicenter phase Ⅲ study comparing capcitabine with fluorouracil and oxaliplatin with cisplatin in patients with advanced oesophagogastric cancer receiving ECF 显示文摘Sumpler KA Harper W Cunningham D 2005Br J Cancer2005,92,:1
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