|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | ^(137)Cs法测算黄土高原土壤侵蚀速率的初步研究显示文摘核尘埃^(137)Cs降落到地表后,被土壤胶粒强烈吸附,集中分布于0—25cm的土壤表层。土壤剖面的^(137)Cs总量随土壤的流失而减少。根据黄土农耕地和非农耕地土壤的^(137)Cs流失模式,推导了它们的流失量和侵蚀速率的相关公式。根据陕西洛川黑木沟和山西离石羊道沟的13个土壤剖面的^(137)Cs含量测试结果,求得的黑木沟草坡覆盖的老谷坡和新谷坡的侵蚀速率分别为1400 t/km^2·a和5700t/km^2·a;羊道沟梁峁坡农耕地的侵蚀速率为3270—6030 t/km^2·a;裸露新谷坡的侵蚀速率大于8000 t/km^2·a。 | 张信宝 D.L.赫吉特 D.E.沃林 | 1991 | 地球化学1991，20，3： | 50 |
| 2 | 叙事事件的重新诠释——电视叙事结构分析显示文摘悉摩尔·查特曼(Seymour Chatman)从理论的角度将故事事件分为核心和附属两类,本文作者在此基础上推出一种新的分析工具:“场景功能模型”(The SceneFunction Model)。“场景功能模型”的目的在于分析电视场景的叙事功能,帮助使用者更加清楚地理解电视叙事体的结构。 | M.J.波特 D.L.拉森 A.哈思考克 K.奈利斯 徐建生 | 2002 | 世界电影2002，，6： | 28 |
| 3 | OXIDATION OF A TWO-PHASE Cu-75Cr ALLOY IN AIRAT 700-900℃显示文摘The cormsion in air of a two-phase Cu-75Cr alloy was studied at 700-900℃. Thealloy cormded nearly parabolically at 700-800℃, but at 900℃ its instantaneousparabolic mte constant decreased with time. The scales were complex and consistedof an outermost layer of copper oxide generally followed bg a layer of the double ox-ide Cu2 Cr2 O4 sometimes containing particles of unoxidized chromium surmunded bya chromia layer. An innermost layer of chromia was also observed in some cases.Finally metallic copper was al8o frequently mixed with chromia particles. No Cr de-pletion was observed in the alloy close to the inteffoce with the scale. In any case,this alloy was not able to form an exclusive continuous protective chromia layer. Thespecial cormsion behavior Of this alloy is typical of two-phase binary systems with alange solubility gaP in which the outwaof dthesion fiux of the most-reactive componentin the alloy is strongly reduced and may be inswncient to fOrm a protective externallayer of the cormsponding oxide. In paTticular, the presence of particles of Cr withina double oxide layer is very unusual and is allowed only for the kinetic reason. | F. Gesmundo Y Niu F. Vianiand D.L. Douglass(Universita di Genova, Fiera del Mare, Pad. D,16129 Genova, Italy)(State Key Lab. for Corrosion and Protection, Institute of Corrosion and Protection of Metals, theChinese Academy of Sciences, Shenyang 110015, Ch | 1997 | Acta Metallurgica Sinica(English Letters)1997，10，4： | 21 |
| 4 | 美国区域研究的起源、性质和挑战显示文摘 | D.L.桑顿 耕香 | 2004 | 国外社会科学2004，，1： | 13 |
| 5 | 氯吡格雷联合阿司匹林与单用阿司匹林预防动脉粥样硬化血栓性事件的比较 | Bhatt D.L. Fox K.A.A. Hacke W. E.J. Topol 罗亮 | 2006 | 世界核心医学期刊文摘(心脏病学分册)2006，0，7： | 9 |
| 6 | Strengthening mechanisms in magnesium alloys containing ternary Ⅰ,W and LPSO phases显示文摘This study was aimed at identifying underlying strengthening mechanisms and predicting the yield strength of as-extruded Mg-Zn-Y alloys with varying amounts of yttrium(Y) element. The addition of Y resulted in the formation of ternary I(Mg_3 YZn_6), W(Mg_3 Y_2 Zn_3) and LPSO(Mg_(12) YZn) phases which subsequently reinforced alloys ZM31 + 0.3 Y, ZM31 + 3.2 Y and ZM31 + 6 Y, where the value denoted the amount of Y element(in wt%). Yield strength of the alloys was determined via uniaxial compression testing, and grain size and second-phase particles were characterized using OM and SEM. In-situ high-temperature XRD was performed to determine the coefficient of thermal expansion(CTE), which was derived to be 1.38 × 10^(-5 K^(-1) and 2.35 × 10^(-5) K^(-1) for W and LPSO phases, respectively. The individual strengthening effects in each material were quantified for the first time, including grain refinement, Orowan looping, thermal mismatch, dislocation density, load-bearing, and particle shearing contributions. Grain refinement was one of the major strengthening mechanisms and it was present in all the alloys studied,irrespective of the second-phase particles. Orowan looping and CTE mismatch were the predominant strengthening mechanisms in the ZM31 + 0.3 Y and ZM31 + 3.2 Y alloys containing I and W phases, respectively, while load-bearing and second-phase shearing were the salient mechanisms contributing largely to the superior yield strength of the LPSO-reinforced ZM31 + 6 Y alloy. | N.Tahreen D.F. Zhang F.S. Pan X.Q. Jiang D.Y. Li D.L. Chen | 2018 | Journal of Materials Science & Technology2018，34，7： | 8 |
| 7 | 孤独症患者脑内神经胶质细胞的激活和神经炎症 | Vargas D.L. Nascimbene C. Krishnan C. C.A. Pardo 郭俊 | 2005 | 世界核心医学期刊文摘(神经病学分册)2005，0，5： | 6 |
| 8 | Nitrogen fertilizer use in China – Contributions to food production, impacts on the environment and best management strategies显示文摘 | Z.L. Zhu D.L. Chen | 2002 | Nutrient Cycling in Agroecosystems (-)2002，，2： | 4 |
| 9 | PROPERTIES, WELDABILITY AND APPLICATIONS OF ADVANCED WROUGHT SUPERALLOYS FOR GAS TURBINE ENGINES显示文摘Alloy selection and alloy design both require consideration of an array of material attributes, including in-service properties, weldability and fabricability. Critical properties of advanced wrought superaUoys for gas turbine applications include high temperature strength, thermal stability, oxidation resistance and fatigue resistance. In this paper, the properties of twelve wrought solid-solution-strengthened and six age-hardenable superalloys are compared. Weldability is an important attribute and can be a major limiting factor in the use of certain alloys. Weldability test methods are discussed and the resistance of alloys to solidification cracking and strain-age cracking is compared. The use of weldability testing in the development of modern wrought superalloys is discussed with several examples cited. Finally, alloy selection for gas turbine components is outlined, taking into account both alloy properties and fabricability. | D.L. Klarstrom V.R. Ishwar M.D. Rowe | 2005 | Acta Metallurgica Sinica(English Letters)2005，18，1： | 4 |
| 10 | Clinical significance of VEGF, ER and AR expression in seminoma显示文摘Objective:To evaluate the expression of vascular endothelial growth factor (VEGF),estrogen receptor(ER) and androgen receptor(AR) in the genesis and development of seminoma.Methods:The expression of VEGF,ER and AR was assayed by means of immuno-histochemical technique in 16 cases of seminoma and 10 cases of prostatic cancer (Pca).Results:The VEGF expression positive rate was significantly higher(P<0.05) in seminoma than in Pca,being 14/16(87.5%) and (4/10,40%),respectively.The AR expression positive rate was lower(P>0.05) in seminoma (9/16,56.2%) than in Pca(9/10,90%).The ER expression was negative in all the seminoma and Pca patients .Conclusion:In Seminoma,the expression of VEGF is significantly increased,which may play a role in the genesis and development of the neoplasm. | J.Z. Wang, P.D. Mao, D.L. Zeng, J.J.Wang, X.Y. Xie, Z.J. Zhu, J.Y. Zhou Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan 637000, China | 2002 | Asian Journal of Andrology2002，4，4： | 4 |
| 11 | Experimental evaluation of methods to quantify dissolved organic nitrogen (DON) and dissolved organic carbon (DOC) in soil显示文摘 | D.L. Jones V.B. Willett | 2005 | Soil Biology and Biochemistry2005，，5： | 3 |
| 12 | 洪水演算通用模型(FLDWAV)显示文摘一种新的模拟非恒定流模型FLDWAV,已由国家气象局研制出来.应用时,既可采用微型、小型计算机,也可采用大型计算机.这种模型是打算取代现行的DAMBRK、DWOPFR模型的,因为它除具有后两者的综合功能外,还提供一种经过改进的便于用户应用的新的水力模拟功能.FLDWAV模型是以圣维南一维非恒定流方程与一系列的内边界条件的隐式有限差分法为依据,用于模拟各种不同形式的水工建筑物所控制的非恒定流.这种水流不论在单一河流中还是在纵横交错的复杂水系中(还得考虑河道的弯曲性)都可能发生.从牛顿水流(不含杂质)到非牛顿水流(含淤泥、杂质、矿渣等),其型态的变化不受时间和地点的任何约束,它可以从缓流变成急流,或从急流变成缓流,也可以从无压流变成有压流.特殊模拟的性能包括,随时间变化的堤坝溃决,堤防漫顶和开裂、随时间变化的闸控出流、各式溢洪道泄流、桥涵或护堤、挡潮翻板闸门、单独的滞洪区和(或)抽水区(包括单个水泵的特性曲线)以及与河道相连或与邻近蓄洪池相连的洪泛区蓄洪池在输水时的自由出流或淹没出流.对单一河槽或树枝状水系来说,FLDWAV可进行自动校正;曼宁系数随地点和水深不断变化,通过对曼宁系数的有效自动调整,就可达到上述校正目的.该模型还能自动选择临界计算时间及距离步长.数据既可以成批输入也可以对话式输入;输出结果可以是表格,也可以是图形.输入或输出单位用英制或用公制均可.FLDWAV可广泛用于各种非恒定流中,包括枝状河系的实时洪水预报,管涌失事和可能最大洪水漫顶引起的堤坝溃决分析,河道整治设计,洪水保险研究时的洪泛区绘图,灌溉系统设计,泥石流淹没绘图以及暴雨排水的设计. | D.L.弗里德 J.M.刘易斯 傅湘宁 | 1991 | 人民长江1991，22，9： | 3 |
| 13 | Study to Determine Adequate Margins in Radiotherapy Planning for Esophageal Carcinoma by Detailing Patterns of Recurrence After Definitive Chemoradiotherapy显示文摘 | Michael R. Button Carys A. Morgan Elizabeth S. Croydon S. Ashley Roberts Thomas D.L. Crosby | 2009 | International Journal of Radiation Oncology, Biology, Physics2009，，3： | 2 |
| 14 | Effect of melt processing conditions on the extent of exfoliation in organoclay-based nanocomposites显示文摘 | H.R. Dennis D.L. Hunter D. Chang S. Kim J.L. White J.W. Cho D.R. Paul | 2001 | Polymer2001，，23： | 2 |
| 15 | Applications of apparent soil electrical conductivity in precision agriculture显示文摘 | D.L. Corwin R.E. Plant | 2004 | Computers and Electronics in Agriculture2004，，1： | 2 |
| 16 | Short-term biochar-induced increase in soil CO 2 release is both biotically and abiotically mediated显示文摘 | D.L. Jones D.V. Murphy M. Khalid W. Ahmad G. Edwards-Jones T.H. DeLuca | 2011 | Soil Biology and Biochemistry2011，，8： | 2 |
| 17 | Gas–liquid two-phase flow in microchannels Part I: two-phase flow patterns显示文摘 | K.A. Triplett S.M. Ghiaasiaan S.I. Abdel-Khalik D.L. Sadowski | 1999 | International Journal of Multiphase Flow1999，，3： | 2 |
| 18 | N'-{1-[(6-氯吡啶-3-基)甲基]-5-甲基-1H-1,2,3-三唑-4-甲酰基}-N'-叔丁基-N-取代苯甲酰肼的合成与杀虫活性显示文摘双酰肼化合物作为一类重要的昆虫生长调节剂,已广泛应用于农作物的保护中.为了发现新颖结构的高效、低毒双酰肼杀虫剂先导化合物,采用点击化学常用的1,2,3-三唑杂环将新烟碱杀虫剂的药效团2-氯-5-(氯甲基)吡啶引入到双酰肼分子骨架中,设计并合成了9种未见文献报道的含双杂环结构的双酰肼目标化合物,其结构经IR,1HNMR,ESI-MS和元素分析测试技术确证.初步的生物活性测定结果表明,部分目标化合物在200mg/L质量浓度下对小菜蛾(Spodoptera exigua)和甜菜夜蛾(Plutella xylostella)表现出中等程度的杀虫活性;但所有目标化合物在200mg/L浓度下对蚕豆蚜虫(Aphis fabae)的杀虫活性均较弱.. | Khalema Thandiwe D.L. 石德清 | 2010 | 有机化学2010，30，12： | 2 |
| 19 | Soil Quality: A Review of the Science and Experiences in the USA显示文摘 | B.J. Wienhold S.S. Andrews D.L. Karlen | 2004 | Environmental Geochemistry and Health2004，，2： | 2 |
| 20 | ENDF/B-VII.1 Nuclear Data for Science and Technology: Cross Sections, Covariances, Fission Product Yields and Decay Data显示文摘 | M.B. Chadwick M. Herman P. Oblo?insky M.E. Dunn Y. Danon A.C. Kahler D.L. Smith B. Pritychenko G. Arbanas R. Arcilla R. Brewer D.A. Brown R. Capote A.D. Carlson Y.S. Cho H. Derrien K. Guber G.M. Hale S. Hoblit S. Holloway T.D. Johnson T. Kawano B.C. Kiedr | 2011 | Nuclear Data Sheets2011，，12： | 2 |
您所在的机构暂未开通此部分的功能，请联系管理员