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410篇 您的检索式:作者名="Robert Davis"
    题名 作者 年代 出处 被引量
1A worldwide phylogenetic classification of the Poaceae (Gramineae)显示文摘基于最近的分子、词法的研究我们在场 the ± 12074 草和地方的一个现代全球种系发生的分类 771 个草类进 12 个亚科( Anomochlooideae , Aristidoideae , Arundinoideae , Bambusoideae , Chloridoideae , Danthonioideae , Micraioideae , Oryzoideae , Panicoideae , Pharoideae , Puelioideae ,和 Pooideae ), 6 supertribes ( Andropogonodae , Arundinarodae , Bambusodae , Panicodae , Poodae , Triticodae ), 51 个部落( Ampelodesmeae , Andropogoneae , Ano 另外,我们包括在 subtribes,部落,和亚科之中说明层次关系的一棵光线的树。我们使用 subfamilial 名字, Oryzoideae,因为后者是开始被出版,在 Ehrhartoideae 上,一个错放的等级,和我们约束 Molinieae 包括 13 个 Arundinoideae 类。subtribe Calothecinae 最新被描述,部落 Littledaleeae 在那个等级是新的。Robert J. Soreng Paul M. Peterson Konstantin Romaschenko Gerrit Davidse Fernando O. Zuloaga Emmet J. Judziewicz Tarciso S. Filgueiras Jerrold I. Davis Osvaldo Morrone 2015Journal of Systematics and Evolution2015,53,2:10
2云母的命名显示文摘定义云母为层状硅酸盐。其结构单元由两个相向排列的四面体片(Ts)和夹于其间的一个八面体片(Os)组成。这些片构成一个单元层,层与层之间被非水化层间阳离子(I)分开,其顺序是:非水化阳离子层、四面体片、八面体片、四面体片、非水化阳离子层、四面体片、八面...Milan Rieder,Giancarlo Cavazzini,Yurii S.D’yakonov, Viktor A.Frank Kamenetskii,Glauco Gottardi,Stephen Guggenheim,Pavel V.Koval′, Georg Muller,Ana M.R.Neiva,Edward W.Radoslovich,Jean Louis Robert, Francesco P.Sassi,Hiroshi Takeda,Zdenek Weiss,Davi 1999矿物岩石地球化学通报1999,18,3:8
3经颅直流电刺激对精神分裂症认知功能的影响:一项双盲随机对照试验的4周随访显示文摘目的探索经颅直流电刺激(tDCS)干预对精神分裂症患者认知功能的作用。方法纳入具有认知功能损害的精神分裂症住院患者39例,随机分为刺激组和伪刺激组。两组疗程均为连续10个工作日,每日进行一次tDCS干预。电极阳极置于患者左侧背外侧前额叶区,阴极置于右侧眶上缘区,电流强度2mA,干预时间20min。研究期间患者均接受常规治疗。采用中文版MATRICS认知成套测验(MCCB)、节奏听觉串行加法任务(PASAT)、CogState成套测验(Cog State Battery)、“看眼读心”测验(RMET)进行治疗基线和干预结束后4周的认知功能评定。结果除社会认知外,刺激组在各领域分值及MCCB总分上均高于对照组,但是仅在信息处理速度上组间差异有统计学意义(F=4.087,P=0.051)。刺激组中MCCB总分改善的患者的基线认知功能显著优于未改善患者(Z=0.085,P=0.011)。结论tDCS对信息处理速度的调控上具有一定维持作用,但仍需要大样本研究进一步证实。王怡然 李伟 蒋江灵 曹歆轶 王继军 金华 John M. Davis Robert C. Smith 李春波 2018神经疾病与精神卫生2018,0,4:7
4Metal concentrations of insects associated with the South African Ni hyperaccumulator Berkheya coddii (Asteraceae)显示文摘在亢奋的蓄电池种的金属的一些金属的高水平可以被转移到昆虫伙伴。我们调查了从南非的 Nihyperaccumulator Berkheya coddii 收集记录整个身体的金属集中的昆虫(公司, Cr, Cu, Mg, Mn, Ni, Pb, Zn ) 。我们也在叶子,茎和开花期记录了这些金属的集中,发现 Ni 的层次极其提高了(4 700—16 000 亩 g/g ) 并且高价值(5—34 亩 g/g ) 为公司, Cr,和 Pb。从 B 镇定的 26 昆虫 morphotypes。coddii,七 heteropterans,一只甲虫类之昆虫,和一只直翅类的昆虫包含了 Ni 的相对高的集中(> 500 亩 g/g ) 。high-Ni heteropterans 的 Thelarge 数字增加其它的发现(从加利福尼亚美国和新喀里多尼亚) 并且建议这份昆虫订单的成员可以是特别地 Ni 容忍。直翅类的昆虫(Stenoscepa ) 的美女包含了 3 500 亩 g Ni/g,最大的 Ni 集中还为一只昆虫报导了。我们也与 Mg 的提高的层次发现了二甲壳虫(> 2 800 亩 g/g ) ,有提高的 Cu 的一甲壳虫(> 70 亩 g/g ) 并且有 Mn 的提高的水平的一 heteropteran (> 200 亩 g/g ) 。在一个 Ni 亢奋的蓄电池上喂的昆虫能动员的 Ourresults 表演 Ni 进食物网,尽管我们没在草食动物或食肉动物昆虫发现 Ni 简历放大的证据,征税一。我们也断定与亢奋的蓄电池联系的一些昆虫能包含足够高对脊椎动物有毒的 Ni 层次。ROBERT S. BOYD MICHEAL A. DAVIS MICHAEL A. WALL KEVIN BALKWILL 2006Insect Science2006,13,2:5
5Impact of biochar amendments on the quality of a typical Midwestern agricultural soil显示文摘David A. Laird Pierce Fleming Dedrick D. Davis Robert Horton Baiqun Wang Douglas L. Karlen 2010Geoderma2010,,3:5
6miR-122 regulation of lipid metabolism revealed by in vivo antisense targeting显示文摘Christine Esau Scott Davis Susan F. Murray Xing Xian Yu Sanjay K. Pandey Michael Pear Lynnetta Watts Sheri L. Booten Mark Graham Robert McKay Amuthakannan Subramaniam Stephanie Propp Bridget A. Lollo Susan Freier C. Frank Bennett Sanjay Bhanot Brett P. Mo 2006Cell Metabolism2006,,2:4
7Host-herbivore studies of Stenoscepa sp. (Orthoptera:Pyrgomorphidae), a high-Ni herbivore of the South African Ni hyperaccumulator Berkheya coddii (Asteraceae)显示文摘Stenoscepa sp 的美女。在在在 Mpumalanga 省的蛇的地点的 Ni 亢奋的蓄电池 Berkheyacoddii 的叶子的 feed,南非。这些地点在正常范围与 Ni 集中包含 Nihyperaccumulators, Ni 蓄电池,和植物。Weconducted 学习到:(ⅰ) 决定美女的整个身体的金属集中(包括那些饥饿倒空他们的勇气) ;(ⅱ) 比较 Stenoscepa sp。对在为整个身体的金属集中的一样的产地的另外的蚂蚱的美女;并且(ⅲ) 当食物为 Stenoscepa sp 采购原料,比较 Nihyperaccumulator 和 Ni 蓄电池植物的适用性。并且另外的蚂蚱。Stenoscepa 美女有极其高整个身体的 Ni 集中(3 500 μ g Ni/g ) 。这是部分由于在内脏的食物使少些包含的昆虫饿了 .Stenoscepa 美女比另外的蚂蚱更好显著地熬过的 Ni (950 μ g Ni/g ) 从也收集了一 serpentine 或一个非蛇的地点当作为食物提供了 high-Ni 植物时。在在四 Berkheya 种(二个 Ni 亢奋的累加器和二个 Ni 累加器) 之中的主机偏爱测试, Stenoscepa sp.preferred Ni 亢奋的累加器种类离开。使用的一个偏爱实验 threeSenecio 种类离开(哪个种类, Senecio coronatus,被 Nihyperaccumulator 和一张 Ni 蓄电池人口代表) 显示出那 Stenoscepa sp。比较喜欢的 Niaccumulator Senecio coronatus 离开到所有另外的选择。我们结束那 Stenoscepa sp。是极其 Ni 容忍的。Stenoscepa sp。美女比较喜欢亢奋的蓄电池 Berkheya 种类的叶子,但是提高的 Ni 集中独自不决定他们的食物偏爱。我们建议 Stenoscepa 美女的极其高整个身体的 Ni 集中可以在这些蛇的社区影响食物网关系。ROBERT S. BOYD MICHEAL A. DAVIS MICHAEL A. WALL KEVIN BALKWILL 2007Insect Science2007,14,2:4
8Sodium modification of zirconia catalysts for ethanol coupling to 1-butanol显示文摘The influences of adding sodium to zirconia on the acid-base properties of the surface and on the catalytic conversion of ethanol and acetone were investigated. The rates of ethanol dehydration, dehydrogenation and coupling were evaluated in a fixed-bed flow reactor operating at temperatures from 613 to 673 K. The rate of acetone condensation was evaluated in the same reactor operating at 473 573 K. Addition of 1.0 wt% Na to ZrO2 decreased the rate of ethanol dehydration by more than an order of magnitude, which was consistent with a neutralization of acid sites evaluated by ammonia adsorption microcalorimetry. Addition of 1.0 wt% Na to ZrO2 also increased the base site density quantified by carbon dioxide adsorption microcalorimetry and the rate of acetone condensation. Although the rate of ethanol coupling was not increased by the addition of Na, the overall selectivity of ethanol to butanol was improved over the 1.0 wt% Na/ZrO2 sample because of the significant inhibition of ethanol dehydration.Joseph T. Kozlowski Robert J. Davis 2013Journal of Energy Chemistry2013,22,1:3
9Comparison of Two Dose-response Relationship of Noise Exposure Evaluation Results with High Frequency Hearing Loss显示文摘Background: Complex noise and its relation to hearing loss are difficult to measure and evaluate. In complex noise measurement, individual exposure results may not accurately represent lifetime noise exposure. Thus, the mean LAcq.8h values of individuals in the same workgroup were also used to represent LAcq.8h in our study. Our study aimed to explore whether the mean exposure levels of workers in the same workgroup represented real noise exposure better than individual exposure levels did. Methods: A cross-sectional study was conducted to establish a model for cumulative noise exposure (CNE) and hearing loss in 205 occupational noise-exposed workers who were recruited from two large automobile manufacturers in China. We used a personal noise dosimeter and a questionnaire to determine the workers' occupational noise exposure levels and exposure times, respectively. A qualified audiologist used standardized audiometric procedures to assess hearing acuity after at least 16 h of noise avoidance. Results: We observed that 88.3% of workers were exposed to more than 85 dB(A) of occupational noise (mean: 89.3 ± 4.2 dB(A)). The personal CNE (CNEp) and workgroup CNE (CNEg) were 100.5 ± 4.7 dB(A) and 100.5 ± 2.9 dB(A), respectively. In the binary logistic regression analysis, we established a regression model with high-frequency hearing loss as the dependent variable and CNE as the independent variable. The Wald value was 5.014 with CNEp as the independent variable and 8.653 with CNEg as the independent variable. Furthermore, we found that the figure for CNEg was more similar to the stationary noise reference than CNEp was. The CNEg model was better than the CNEp model. In this circumstance, we can measure some subjects instead of the whole workgroup and save manpower. Conclusions: In a complex noise environment, the measurements of average noise exposure level of the workgroup can improve the accuracy and save manpower.Hua Zhang Nan Li Qiu-Ling Yang Wei Qiu Liang-Liang Zhu Li-Yuan Tao Robert I Davis Nicholas Heyer Yi-Ming Zhao 2015Chinese Medical Journal2015,,6:3
10Sofosbuvir with pegylated interferon alfa-2a and ribavirin for treatment-naive patients with hepatitis C genotype-1 infection (ATOMIC): an open-label, randomised, multicentre phase 2 trial显示文摘Kris V Kowdley Eric Lawitz Israel Crespo Tarek Hassanein Mitchell N Davis Michael DeMicco David E Bernstein Nezam Afdhal John M Vierling Stuart C Gordon Jane K Anderson Robert H Hyland Hadas Dvory-Sobol Di An Robert G Hindes Efsevia Albanis William T Symo 2013The Lancet2013,,9883:3
11What moves housing markets: A variance decomposition of the rent–price ratio显示文摘Sean D. Campbell Morris A. Davis Joshua Gallin Robert F. Martin 2009Journal of Urban Economics2009,,2:3
12Do medical students studying in the United Kingdom have an adequate factual knowledge of basic life support?显示文摘BACKGROUND: Healthcare professionals have a duty to maintain basic life support(BLS) skills. This study aims to evaluate medical students' factual knowledge of BLS and the training they receive.METHODS: A cross-sectional, closed-response questionnaire was distributed to the fi rst-and fourth-year students studying at institutions in the United Kingdom. The paper questionnaire sought to quantify respondent's previous BLS training, factual knowledge of the BLS algorithm using five multiple choice questions(MCQs), and valuate their desire for further BLS training. Students received 1 point for each correctly identifi ed answer to the 5 MCQ's.RESULTS: A total of 3,732 complete responses were received from 21 medical schools. Eighty percent(n=2,999) of students completed a BLS course as part of their undergraduate medical studies. There was a signifi cant difference(P<0.001) in the percentage of the fourth-year students selecting the correct answer in all the MCQ's compared to the fi rst-year students except in identifyingthe correct depth of compressions required during CPR(P=0.095). Overall 10.3%(95% CI 9.9% to 10.7%) of respondents correctly identified the answer to 5 MCQ's on BLS: 9% of the first-year students(n=194) and 12% of the fourth-year students(n=190). On an institutional level the proportion of students answering all MCQ's correctly ranged from 2% to 54% at different universities. Eighty-one percent of students(n=3,031) wished for more BLS training in their curriculum.CONCLUSION: Factual knowledge of BLS is poor among medical students in the UK. There is a disparity in standards of knowledge across institutions and respondents indicating that they would like more training.Robert D.Willmore Damjan Veljanoski Feray Ozdes Bethan Stephens James Mooney Seamus G.Crumley Arpan Doshi Philippa Davies Shreya Badhrinarayanan Emily Day Kristian Tattam April Wilson Nathan Crang Lorna Green Craig A.Mounsey Howell Fu Joseph Williams Michelle S.D'souza Dhanya Sebastian Liam A.Mcgiveron Matthew G.Percy James Cohen Imogen J.John Alice Lethbridge Imogen Watkins Omar Amin Mubasher A.Qamar John Gerrard Hanrahan Emily Cramond-Wong 2019World Journal of Emergency Medicine2019,10,2:2
13Hydrogenolysis of glycerol over carbon-supported Ru and Pt catalysts显示文摘Erin P. Maris Robert J. Davis 2007Journal of Catalysis2007,,2:2
14Impact of biochar amendments on the quality of a typical Midwestern agricultural soil显示文摘David A. Laird Pierce Fleming Dedrick D. Davis Robert Horton Baiqun Wang Douglas L. Karlen 2010Geoderma2010,,3:2
15Modeling of Gold Circular Sub-Wavelength Apertures on a Fiber Endface for Refractive Index Sensing显示文摘一条有限差别的时间域途径被用来在光纤维 endface 上调查圆形的亚波长孔的表面电浆子的刺激。这现象提供了敏感液体的基础折射索引传感器。建议传感器是紧缩的并且有潜力在生物医学的应用被过去常。Huy NGUYEN Gregory W. BAXTER Stephen F. COLLINS Fotios SIDIROGLOU Ann ROBERTS Timothy J. DAVIS 2012Photonic Sensors2012,2,3:2
16Impact of Premorbid Undernutrition on Outcome in Stroke Patients显示文摘James P. Davis Andrew A. Wong Philip J. Schluter Robert D. Henderson John D. O’Sullivan Stephen J. Read 2004Stroke: Journal of the American Heart Association2004,,8:2
17Rapid, cost-effective DNA quantification via a visuallydetectable aggregation of superparamagnetic silicamagnetite nanoparticles显示文摘Qian Liu Jingyi Li Hongxue Liu Ibrahim Tora Matthew S. Ide Jiwei Lu Robert J. Davis David L. Green James P. Landers 2014Nano Research2014,7,5:2
18Retrieval of subpixel snow-covered area and grain size from imaging spectrometer data显示文摘Thomas H. Painter Jeff Dozier Dar A. Roberts Robert E. Davis Robert O. Green 2003Remote Sensing of Environment2003,,1:2
19Near-fatal air embolism: fibrin sheath as the portal of air entry显示文摘Roberts S Johnson M Davies S 2003South Med J2003,96,10:1
20Prevalence, Demographics, and Treatment Characteristics of Visual Impairment due to Diabetic Macular Edema in a Representative Canadian Cohort显示文摘Robert J. Petrella Julie Blouin Brian Davies Martin Barbeau Andrew G. Lee 2012Journal of Ophthalmology2012,,:1
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