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105篇 您的检索式:作者名="B.D."
    题名 作者 年代 出处 被引量
1现代黄河水下三角洲底坡的不稳定性显示文摘高分辨率声学系统在黄河口区记录到水下河道、埋藏沟谷、塌陷坑、陡缘洼地、滑块体、断层和浅层气等特征。水下三角洲可划分为浅水台地平整区、斜坡低隆起区、斜坡浅沟坑区、斜坡深沟坑区和斜坡前缘低角度平坦区五个底坡稳定性不同的微地貌单元。研究表明,水下三角洲的沉积-地貌格局受控于黄河汛期的巨量输沙、河口区的快速沉积和重力再搬运以及波浪和余环流因素。对影响底坡不稳定性的沉积物力学性质、自然地震和风暴潮因素也作了初步讨论。林振宏 杨作升 Bornhold B.D. 1995海洋地质与第四纪地质1995,15,3:16
2持续性胸痛预示无闭塞性冠状动脉疾病女性中的心血管事件:NIH-NHLBI发起的女性缺血综合征评价(WISE)研究的结果显示文摘Aims: Women with chest pain but without obstructive coronary artery disease(CAD) are considered at low risk for cardiovascular(CV) events, but half continue to experience debilitating chest pain over many years. This study compared CV outcomes in women with persistent chest pain(PChP) vs. those without PChP. Methods and results: We studied 673 Women’s Ischaemia Syndrome Evaluation(WISE) participants with chest pain undergoing coronary angiography for suspected myocardial ischaemia and at least 1 year of follow-up. PChP was defined as self-reported continuing chest pain after 1 year. Events occurring after that year were recorded for a median of 5.2 years. We compared CV event rates for women with and without PChP in subgroups with and without obstructive CAD. The median age was 58 years, 20%were racial minorities, 45%had PChP, 39%had obstructive CAD. Among women without CAD, those with PChP had more than twice the rate of composite CV events(P=0.03), that included non-fatal myocardial infarctions(P=0.11), strokes(P=0.03), congestive heart failure(P=0.38), and CV deaths(P=0.73), compared with those without PChP. In women with CAD, there was no difference in composite CV events in those with and without PChP(P=0.72). Conclusion: Among women undergoing coronary angiography for suspected myocardial ischaemia, PChP in women with no obstructive CAD predicted adverse CV outcomes. Such women might benefit from additional evaluation and aggressive risk factor modification therapy.Johnson B.D. Shaw L.J. Pepine C.J. 郭俊 2006世界核心医学期刊文摘(心脏病学分册)2006,,12:8
3游戏在儿童早期教育中的价值显示文摘本文译自美国纽约学术出版社1980年出版的《儿童早期教育问题》一书的第二章“当代幼儿教育方案和有关的争论问题”,这一章由美国北卡罗里那大学课程和教学系B·D·戴伊撰写。关于游戏在儿童早期教育中的价值问题是作者所介绍的三个有争论的问题之一。其它两个问题是:(1)关于儿童早期阅读的争论;(2)电视对儿童的影响问题。 作者向我们介绍了西方幼教界关于游戏的定义问题的争论和历史上的、当代的一些思想家、教育家、心理学家(如福录贝尔、皮亚杰等人)关于游戏的价值的看法以及游戏在现行的一些幼儿教育方案中的地位;同时作者从儿童发展的各个方面(认知的、情感的、社会性的、身体的)出发,全面论述了游戏在儿童早期教育中的价值问题。 此文有助于我们了解西方幼教界、心理学界对于游戏的理论研究与实际应用的情况,对于我国幼教界开展游戏问题的研究也具有一定的意义。B.D.戴伊 刘焱 卢乐山 1984比较教育研究1984,,3:6
4几丁虫的反射率——早古生代有机岩石学的新前缘显示文摘根据对我国扬子地台中部奥陶纪几丁虫生物地层及其壳壁光性特征和反射率的研究,联系华南及塔里木盆地有关的资料,系统总结了我国奥陶纪、志留纪几丁虫生物组合序列的划分及其对比,探讨了几丁虫的光性特征。指出几丁虫在所切光面上具有各向同性的光性特征,只有反射率而无双反射率;在相同成熟度情况下,几丁虫的随机油浸反射率较笔石高,而较虫牙和疑源类低。通过对几丁虫反射率与同层或邻近层位中所测Ica、笔石反射率,尤其是分散有机质红外光谱分析所获等效镜质组反射率的对比说明,几丁虫的随机反射率R0为104%~170%,>17%~31%和>31%~41%时,分别相当等效镜质组反射率(R0,eq)09%~135%,>135%~22%和22%~30%,依次指示含几丁虫母岩有机质演化处于成熟、过成熟早期和过成熟晚期阶段。尽管这个对应关系还需要在今后研究中去进一步证实,但至少说明,几丁虫反射率随有机成熟度增加而增加,对于不含镜质组的晚志留世以前地层来讲,它们可以作为有机质成熟度的指示。汪啸风 陈孝红 B.D.埃特曼 1997地学前缘1997,4,3:5
5一种非洲番茄黄化曲叶病毒DNA的克隆显示文摘用PCR获得了非洲塞内加尔番茄黄化曲叶病毒(TYLCV-SEN)的全长DNA A,并进行了克隆和部分序列分析。DNA序列分析的序列共1359bp,包括外壳蛋白基因、AVl基因、基因间区(IR)及部分复制酶基因。计算机分析显示:TYLCV-SEN与其他亚组Ⅲ双生病毒相比,外壳蛋白氨基酸同源性为67%~83.4%,AVl基因产物氨基酸同源性为61%~84%,IR最大同源性为60%~68%,且与非洲和中东地区的亚组Ⅲ双生病毒有更大的同源性,是一种新的粉虱传播的双生病毒。刘玉乐 李冬玲 王环字 田波 B.D. Harrison 1998自然科学进展(国家重点实验室通讯)1998,8,3:3
6慢性心力衰竭时的贫血不仅与肾脏灌注受损和促红细胞生成素减少有关,亦与液体潴留有关显示文摘目的:贫血在慢性心力衰竭(CHF)人群中普遍,但其原因尚不明确。本研究旨在观察CHF患者中贫血与肾脏灌注、促红细胞生成素(EPO)生成及液体潴留之间的关系。方法和结果:作者观察了97例CHF患者,其中15例伴有贫血(男性Hb〈130g/L,女性Hb〈120g/L),但无补血剂缺乏。分别用连续灌注^125I-碘酞酸盐的清除率和分布容积来检测肾小球滤过率(GFR)和细胞外容积(ECV)。有效肾血浆流量(ERPF)则依据^131I-邻碘马尿酸钠的清除率确定。贫血的CHF患者表现出显著降低的GFR、ERPF和EPO生成(分别为P=0.002、P=0.005和P=0.001),以及增加的ECV(P=0.015)。Westenbrink B.D. Visser F.W. Voors A.A. 孙凯 2007世界核心医学期刊文摘(心脏病学分册)2007,3,7:3
7ON A PAIR OF NON-ISOMETRIC ISOSPECTRAL DOMAINS WITH FRACTAL BOUNDARIES AND THE WEYL-BERRY CONJECTURE显示文摘ONAPAIROFNONISOMETRICISOSPECTRALDOMAINSWITHFRACTALBOUNDARIESANDTHEWEYLBERRYCONJECTURESLEEMAN,B.D.CHENHUAManuscriptrec...SLEEMAN,B.D. CHENHUA 1998Chinese Annals of Mathematics,Series B1998,19,1:2
8The Role of Endoscopy in the Assessment and Treatment of Esophageal Cancer显示文摘J.A. Evans D.S. Early V. Chandraskhara K.V. Chathadi R. Fanelli D.A. Fisher K. Foley J.H. Hwang T.L. Jue S. Pasha R. Sharaf A. Shergill J.A. Dominitz B.D. Cash 2012Gastrointestinal Endoscopy2012,,:2
9NUMERICAL SIMULATION OF TEMPERATURE FIELD ON FLASH BUTT WELDING FOR HIGH MANGANESE STEELS显示文摘An axial symmetry finite element model coupled with electricity-thermal effect was developed to study the temperature field distribution in process of the flash butt welding (FBW) of frog high-manganese steel. The influence of temperature dependent material properties and the contact resistance were taken into account in FEM simulation. Meanwhile, the lost materials due to splutter was resolved by using birth and death element. The result of analyzing data shows that the model in the FBW flashing is reasonable and feasible, and can exactly simulate the temperature field distribution. The modeling provides reference for analysis of welding technologies on the temperature field of high-manganese steel in FBW.B.D. Yu W.D. Song F. C. Zhang 2005Acta Metallurgica Sinica(English Letters)2005,18,4:2
10The Effect of pH and Plaque on the Uptake of Cu and Mn in Phragmites australis (Cav.) Trin ex. Steudel显示文摘L.C. Batty A.J.M. Baker B.D. Wheeler C.D. Curtis 2000Annals of Botany2000,,3:2
11STICK–SLIP–SEPARATION ANALYSIS AND NON-LINEAR STIFFNESS AND DAMPING CHARACTERIZATION OF FRICTION CONTACTS HAVING VARIABLE NORMAL LOAD显示文摘B.D. Yang M.L. Chu C.H. Menq 1998Journal of Sound and Vibration1998,,4:2
12Achieving accuracy requirements for forest biomass mapping: A spaceborne data fusion method for estimating forest biomass and LiDAR sampling error显示文摘P.M. Montesano B.D. Cook G. Sun M. Simard R.F. Nelson K.J. Ranson Z. Zhang S. Luthcke 2013Remote Sensing of Environment2013,,:2
13Reductive acid leaching of laterite and metal oxides — A review with new data for Fe(Ni,Co)OOH and a limonitic ore显示文摘G. Senanayake J. Childs B.D. Akerstrom D. Pugaev 2011Hydrometallurgy2011,,1:2
14Recent Developments in Irradiation-Resistant Steels显示文摘G.R. Odette M.J. Alinger B.D. Wirth 2008Annual Review of Materials Research2008,,:1
15Electrochemical characterisation of the porosity and corrosion resistance of electrochemically deposited metal coatings显示文摘F.C. Walsh C. Ponce de León C. Kerr S. Court B.D. Barker 2008Surface & Coatings Technology2008,,:1
16Requirement for both micron- and submicron scale structure for synergistic responses of osteoblasts to substrate surface energy and topography显示文摘G. Zhao A.L. Raines M. Wieland Z. Schwartz B.D. Boyan 2007Biomaterials2007,,18:1
17Handheld, battery-powered near-IR TDL sensor for stand-off detection of gas and vapor plumes显示文摘R.T. Wainner B.D. Green M.G. Allen M.A. White J. Stafford-Evans R. Naper 2002Applied Physics B Lasers and Optics (-)2002,,2:1
18Effects of arbuscular mycorrhizal inoculation on uranium and arsenic accumulation by Chinese brake fern ( Pteris vittata L.) from a uranium mining-impacted soil显示文摘B.D. Chen Y.-G. Zhu F.A. Smith 2005Chemosphere2005,,9:1
19Large-scale application of membrane contactors for gas transfer from or to ultrapure water显示文摘A. Sengupta P.A. Peterson B.D. Miller J. Schneider C.W. Fulk 1998Separation and Purification Technology1998,,1:1
20Tumor lysis syndrome following endoscopic radiofrequency interstitial thermal ablation of colorectal liver metastases显示文摘B.D. Barry M.R. Kell H.P. Redmond 2002Surgical Endoscopy2002,,7:1
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