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| 1 | 鉴别瘤样脱髓鞘病变与胶质瘤及中枢神经系统淋巴瘤:CT平扫对于常规MRI增强检查的补充价值显示文摘目的回顾性研究在瘤样脱髓鞘病变与原发性胶质瘤及中枢神经系统淋巴瘤的鉴别中,CT平扫检查对于常规MRI增强检查是否有补充价值。方法该研究得到了当地伦理委员会的批准.并免除病人知情同意。回顾性分析15例瘤样脱髓鞘病变病人(7例女性,8例男性;平均年龄42岁,年龄范围27~57岁)和48例原发性脑肿瘤病人(27例女性,21例男性;平均年龄48岁,年龄范围19~70岁;10例淋巴瘤,38例胶质瘤)的CT平扫及增强MR影像。根据MR影像有无强化, | D.S. Kim D.G. Na K.H. Kim J.H. Kim E.Kim B.L. Yun 高光峰(译) 夏爽(校) | 2009 | 国际医学放射学杂志2009,32,4: | 42 |
| 2 | 超分子结构水杨酸根插层水滑石的组装及结构与性能研究显示文摘以锌铝水滑石ZnAl CO3LDHs为前体 (主体 ) ,以乙二醇为分散介质 ,用离子交换法组装了水杨酸根 (客体 )插层水滑石ZnAl [o HO(C6 H4)COO]LDHs ,并用XRD ,FT IR ,TG DTA等手段对样品进行了表征。结果表明 ,通过控制离子交换条件 ,水杨酸根阴离子可取代锌铝水滑石前体层间的CO2 -3离子 ,组装得到晶体结构良好的水杨酸根插层水滑石。通过研究发现 ,主体水滑石层板与客体以静电力和氢键相互作用 ,得到的超分子结构材料紫外阻隔作用增强并具有较好的稳定性 ,从而成为一种集屏蔽和吸收双重功能的新型无机 | 邢颖 李殿卿 任玲玲 EVANS D.G. 段雪 | 2003 | 化学学报2003,61,2: | 50 |
| 3 | 非饱和土抗剪强度理论的研究进展显示文摘非饱和土的工程性质是20世纪90年代以来国际岩土工程界研究的热点,非饱和土的抗剪强度是非饱和土的重要工程性质之一,在参阅了中、外文相关资料的基础上,总结了非饱和土抗剪强度理论的研究成果,提出了非饱和土抗剪强度有待进一步研究的问题。 | 陈敬虞 Fredlund D.G. | 2003 | 岩土力学2003,24,S2: | 40 |
| 4 | 非饱和土的力学性能与工程应用显示文摘作为一种岩土工程材料,土在非饱和状态下的工程性质与其在饱和状态下是不同的。在过去几十年里,许多学者企图应用饱和土力学的基本理论和原理去解决非饱和土的工程问题。事实证明,没有一种努力是非常成功的。本文从非饱和土中“相”的物理意义和工程性质出发,论述了非饱和土的应力状态变量和体积变化的基本关系式,并应用这种理论分析了膨胀土的体积变化问题和非饱和土的边坡稳定问题。 | Fredlund D.G. 杨宁 | 1991 | 岩土工程学报1991,13,5: | 29 |
| 5 | 超分子结构草甘膦插层水滑石的组装及结构研究显示文摘提出了一种新的绿色农药缓释剂模型——超分子结构草甘膦缓释剂 .依据插层组装理论 ,以阴离子层状材料镁铝水滑石 (Mg Al-LDH)为插层主体 ,以除草剂草甘膦为插层客体 ,由共沉淀法一步组装得到超分子结构草甘膦插层镁铝水滑石 (Mg Al-LDH-gly) .通过对 Mg Al-LDH-gly的结构、主客体相互作用及化学组成确认 ,建立了 Mg Al-LDH-gly的近似超分子结构模型 ,并对其缓慢释放草甘膦的可行性进行了分析 . | 孟锦宏 张慧 Evans D.G. 段雪 | 2003 | 高等学校化学学报2003,24,7: | 26 |
| 6 | Zn-Mg-Al-CO_(3)LDHs的结构及其抑烟和阻燃性能显示文摘以 Zn 化合物具有促进炭化膜形成及较好抑烟效果为依据, 提出将 Zn2+作为结构基元引入阻燃剂Mg-Al-CO3 LDHs 中, 采用成核/晶化隔离法制备了 Zn-Mg-Al-CO3 LDHs. 将 Zn-Mg-Al-CO3 LDHs 均分散至 EVA-28 树脂中, 测试了 Zn-Mg-Al-CO3 LDHs/EVA-28 复合材料的氧指数和烟密度, 探讨了阻燃和抑烟机理. 结果表明, Zn-Mg-Al-CO3 LDHs 具有较 Mg-Al-CO3LDHs 更为显著的阻燃和抑烟效果. | 史翎 李殿卿 李素锋 王建荣 Evans D.G. 段雪 | 2005 | 科学通报2005,50,4: | 20 |
| 7 | 己二酸柱撑水滑石的制备及表征显示文摘Layered double hydroxides (LDHs) or hydrotalcite-like materials of the type Mg1 -xAlx(OH) 2 (Xn- ) x/n ·zH2O are most readily prepared when Xn- is the carbonate ion. Although many other LDHs undergo facile ion-exchange reactions, the carbonate ion in LDHs is known to be very difficult to replace by conventional ion-exchange. We have developed a simple synthesis of adipate-pillared LDHs of the type Mg4A12 (OH) 12 [O2C (CH2)4CO2]· 4H2O by direct reaction of free adipic acid with an LDH carbonate precursor. The materials obtained have been characterized by XRD, FT-IR and DTA. It is shown that by appropriate choice of reaction conditions, the carbonate ions in the precursor can be completely replaced by adipate ions. The adipate-pillared LDHs retain a layered structure with an interlayer distance of 1. 40urn. The interlayer adipate ions are lost on heating the material to 39℃. | 孙幼松 矫庆泽 赵芸 Evans D.G. 段雪 | 2001 | 无机化学学报2001,17,3: | 20 |
| 8 | Pm21 from Haynaldia villosa Encodes a CC-NBS- LRR Protein Conferring Powdery Mildew Resistance in Wheat显示文摘 | Liping Xing Ping Hu Jiaqian Liu Kamil Witek Shuang Zhou Jiefei Xu Weihao Zhou Li Gao Zhenpu Huang Ruiqi Zhang Xiue Wang Peidu Chen Haiyan Wang Jonathan D.G. Jones Miroslava Karafiatova Jan Vrana Jan Baros Jaroslav Dolezel Yuanchun Tian Yufeng Wu Aizhong Cao | 2018 | Molecular Plant2018,11,6: | 16 |
| 9 | 3.0 T高空间分辨力MR下肢血管成像对比剂剂量的对照性研究显示文摘目的明确在3.0T设备上行下肢高空间分辨力MR血管成像时,是否可在对比剂剂量减少的情况下仍保持较好的影像质量。方法45例病人(男27例,女18例;平均年龄64岁)在3.0T设备上行下肢增强MR血管成像检查。本研究经学院伦理委员会批准可免除知情同意书。16例采用高剂量(约0.3mmol/kg),15例采用中等剂量(约0.2mmol/kg),14例采用低剂量(约0.1mmol/kg)的马根维显溶液进行3站双相注射检查。将动脉系统从腹腔干到跖动脉分成34个节段评定积分。 | R. Habibi M.S. Krishnam D.G. Lohan F. Barkhordarian M. Jalili R.S.Saleh 白荣杰(译) 唐光健(校) | 2008 | 国际医学放射学杂志2008,31,5: | 15 |
| 10 | 中国农村与农业改革的成效与问题显示文摘中国农村与农业改革的成效与问题D·G·约翰逊(芝加哥大学)979年开始的农村经济改革,其成效远大于缺陷。当然我们也不应忽视改革进程中存在着的重要问题,尤其是它影响到中国未来的食品供应。本文将论及改革的这两个方面。一、农村改革的主要成效世界上从没有任何... | D.G.约翰逊 | 1997 | 经济研究1997,32,1: | 12 |
| 11 | An international program on Silk Road Disaster Risk Reduction--a Belt and Road initiative (2016-2020)显示文摘Belt and Road Initiative(BRI) is a Chinese national strategy which calls for cooperative economic, political and cultural exchange at the global level along the ancient Silk Road. The overwhelming natural hazards located along the belt and road bring great challenges to the success of BRI. In this framework, a 5-year international program was launched to address issues related to hazards assessment and disaster risk reduction(DRR). The first workshop of this program was held in Beijing with international experts from over 15 countries. Risk conditions on Belt and Road Countries(BRCs) have been shared and science and technology advancements on DRR have been disseminated during the workshop. Under this program, six task forces have been setup to carry out collaborative research works and three prioritized study areas have been established. This workshop announced the launching of this program which involved partners from different countries including Pakistan, Nepal, Russia, Italy, United Kingdom, Sri Lanka and Tajikistan. The program adopted the objectives of Sendai Framework for Disaster Risk Reduction 2015-2030 and United Nation Sustainable Development Goals 2030 and was implemented to assess disaster risk in BRCs and to propose suitable measures for disaster control which can be appropriate both for an individual country and for specific sites. This paper deals with the outcomes of the workshop and points out opportunities for the near future international cooperation on this matter. | LEI Yu CUI Peng Amar Deep REGMI Virginia MURRAY Alessandro PASUTO Giacomo TITTI Muhammad SHAFIQUE Tilak PRIYADARSHANA D.G. | 2018 | Journal of Mountain Science2018,15,7: | 8 |
| 12 | Microstructure and Mechanical Properties of Nanocrystalline Tungsten Thin Films显示文摘Tungsten (W) thin films were prepared by magnetron sputtering onto Si (100) substrates. Their microstructures were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). The hardness and modulus were evaluated by nanoindentation. It is found that a 30 nm Cr sticking layer induces structure changes of deposited W film from β-W to α-W structure. In addition, remarkable hardness enhancement both for the deposited and annealed W films, were compared with that of bulk coarse-grained W, although their nanoindentation modulus is very close to that of corresponding bulk W. The intrinsic reasons that lead to structure changes and super hardness are discussed. | H.L. Sun, Z.X. Song, D.G. Guo, F. Ma and K.W. Xu State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi an Jiaotong University, Xi’an 710049, China | 2010 | Journal of Materials Science & Technology2010,26,1: | 6 |
| 13 | 中国的母子关系模式及文化传递显示文摘中国的母子关系模式及文化传递乐国安[美]D·G.弗里德曼,[美]C.帕克导言美国心理学家鲍比(Bowlbv,1969)在他的对亲子依恋的早期研究中,把母子间的连结视为一种调整目标的行为系统。该系统的目标就是促进幼儿的安全。他还首先认识到扩大依恋概念的... | 乐国安 D.G.弗里德曼 C.帕克 | 1997 | 天津师范大学学报(社会科学版)1997,17,3: | 6 |
| 14 | The effect of electromagnetic stirring during solidification on the structure of Al-Si alloys显示文摘 | W.D. Griffiths D.G. McCartney | 1996 | Materials Science & Engineering A1996,,1: | 5 |
| 15 | 硼酸根插层锌镁铝水滑石的制备及其阻燃抑烟性能研究显示文摘采用成核/晶化隔离法和离子交换法分别制备了处于纳米尺寸的碳酸根镁铝水滑石和硼酸根锌镁铝水滑石。并将两种水滑石加入到聚醋酸乙烯脂中制备成复合材料,测试了复合材料的氧指数和无焰燃烧条件下的烟密度,考察了纳米LDHs对聚醋酸乙烯脂的阻燃及抑烟效果,并探讨了阻燃和抑烟机理。 | 李素锋 李殿卿 史翎 Evans D.G. 段雪 | 2005 | 阻燃材料与技术2005,,4: | 5 |
| 16 | 用数值模拟法估量井筒保安矿柱稳定性的案例研究显示文摘在印度拉贾斯坦邦乌代布尔的扎瓦尔地区,莫奇亚铅锌矿是最古老的生产矿山。为了预测此矿山辅助井井筒保安矿柱的稳定性,采用伪三维边界元技术和二维有限元技术做了数值模拟。以位移不连续法为依据的伪三维边界元程序被用来模拟矿柱和矿房。由于这个模型不能估算封闭应力的量值,矿柱也用二维有限元法模拟。用沿脉平巷和辅助井井筒保安矿柱内岩石的渐进断裂以及应力计的观测成果,对该模型做了校准。由这两种技术获得的成果,使得有可能靠分析应力的增长来预测辅助井井筒保安矿柱的稳定性。根据这项研究得出的结论是:这两种数值技术的综合应用,为更逼真地预测矿山巷道周围岩体的受力现象缔造了适宜的工具。 | U.K.辛格 D.G.拉奥 宋彦琦 | 1995 | 国外金属矿山1995,20,7: | 5 |
| 17 | 层状前体镁铁水滑石及磁性材料的制备及表征显示文摘本文提出了利用镁铁水滑石作为磁性材料前体再经高温焙烧制备尖晶石型铁氧体的思路,深入研究了水滑石的制备工艺及结构性能并初步探讨了其焙烧后的磁学性能。由共沉淀法合成了Mg/Fe摩尔比为2,3,4,6的镁铁水滑石,XRD结果表明随镁铁比增大、晶化温度的升高及晶化时间的延长,水滑石的晶体结构规整性增强;热重-差热结果显示镁铁水滑石的分解有两个过程,随着镁铁比增大,水滑石的热稳定性提高。高温焙烧后的镁铁水滑石具有较好的磁学性能。 | 周彤 战可涛 李峰 Evans D.G. 段雪 张密林 | 2002 | 无机化学学报2002,18,8: | 5 |
| 18 | 硝酸根型镁铁水滑石的合成及其离子交换性能研究显示文摘采用共沉淀法合成出了层间阴离子为NO-3的镁铁水滑石(MgFe-NO3-LDHs),当滴料终点pH值为9.5,反应温度为100℃,反应时间为4h时,可得到晶体结构规整的层状结构产物。通过离子交换将有机阴离子CH2CHC6H4SO-3和CH3(CH2)11SO-3引入层间,形成以双分子层垂直于层板的交错有序的排布结构模式。 | 孟伟青 李峰 Evans D.G. 段雪 | 2004 | 现代化工2004,24,3: | 5 |
| 19 | 罗马法的接受和持续影响显示文摘一、“第二次生命” 罗马法是世界上最伟大的事物之一,了解它是开明教育的一个部分,正如了解其他许多伟大事物一样。除开这个事实以外,它在过去的岁月里一直保持着影响。事实上,正如耶林在上个世纪所写的那样:它已经成了“当代世界文明的一个因素。” 当然,对于律师和法科学生来说,罗马法一直服务于作为法理学和法律学研究导论的特殊目的。在英格兰,自从伦巴第人维卡留斯1149年左右在牛津开始讲授罗马法后,罗马法的作用就已被这样理解了。维卡留斯并且还出版了一部关于查士丁尼法典和学说汇纂的著作。 | D.G.克莱克尼尔 C.H.威尔逊 林榕年 王云霞 | 1995 | 中外法学1995,7,2: | 4 |
| 20 | STUDY OF THE EFFECT OF BORON CONTENT ON THE ORDERED EXTENT OF THE Ni_3Al INTERMETALLICS COMPOUND BY AP-FIM显示文摘By using AP-FIM the varity of the ordered degree of Ni3Al with L12 structure with B content was studied. The possibility of boron improving ductility was also discussed from bonding between Ni and Al atoms, and antisite defects in Ni3Al. The extent of ordering is reduced with an increase in boron content and the autisite defects are most obvious for 0.52at.K B-doped sample that has the best ductility. Some results were verified by X-ray diffraction non. The addition of boron not only influences electron environment at grain boundary but also in the interior of Ni3Al gm ins, the latter is favorable to improve the ductility of Ni3Al grains. | D.G. Ren Z.Q. Li X.S. Fan and J. T. Guo Laboratory of Atomic Imaging of Solids, Institute of Metal Research, The Chinese Academy of Sciences, Shenyang 110015, China | 2000 | Acta Metallurgica Sinica(English Letters)2000,13,4: | 3 |