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| 1 | Mei Symmetry and Conserved Ouantity of Tzénoff Equations for Nonholonomic Systems of Non-Chetaev's Type显示文摘为 non-Chetaev 在组的无穷小的转变下面的类型的 nonholonomic 系统的 Tz é noff 方程的 Mei 对称被学习。它的定义和 Mei 对称的判别式方程被给。Mei 对称推出的谎言对称的足够、必要的状况也被给。Hojman 保存了 Tz é noff 方程的数量因为通过处于特殊 Mei 对称的条件的谎言对称的系统被获得。 | ZHENG Shi-Wang XIE Jia-Fang LI Yan-Min | 2008 | Communications in Theoretical Physics2008,49,4: | 18 |
| 2 | 钯等过渡金属催化的卤代芳烃和胺的偶联反应显示文摘综述了钯等过渡金属催化的卤代芳烃或芳基磺酸酯和胺的偶联反应以及催化这一新反应的催化剂的发展和应用 .用于该反应的配体由P(o tolyl) 3发展到BINAP及二烷基芳基膦 ,其底物由溴代芳烃扩展到经济易得的氯代芳烃及磺酸酯和各种胺 . | 张贞发 周伟澄 | 2002 | 有机化学2002,22,10: | 12 |
| 3 | 可见光催化有氧脱氢合成2,3-二氢-4-吡啶酮与4-喹诺酮(英文)显示文摘报道了一种可见光促进4-哌啶酮及2,3-二氢-4-喹诺酮的有氧脱氢化方法.研究中通过使用一种二腈基哌嗪化合物(dicyanopyrazine-derived chromophore,DPZ)为光催化剂,能够以令人满意的分离产率(最高75%)分别合成出2,3-二氢-4-吡啶酮与4-喹诺酮.本反应为这两类重要含氮杂环化合物提供了一种直接的、可持续的以及高原子经济性的合成途径. | 邵天举 江智勇 | 2017 | 化学学报2017,75,1: | 7 |
| 4 | Unified Symmetry of Nonholonomic Mechanical Systems with Non-Chetaev's Type Constraints显示文摘 | XIA Li-Li LI Yuan-Cheng HOU Qi-Bao WANG Jing | 2006 | Communications in Theoretical Physics2006,46,4X: | 3 |
| 5 | Copper-Catalyzed Amination of Aryl Halides with Aqueous Ammonia under Mild Conditions显示文摘从 CuSO4 在 situ 产生的 Cu (I)????菨 o ?? 鼀? | Zhengjun Quan | 2013 | Chinese Journal of Chemistry2013,31,4: | 3 |
| 6 | 完美骨架全硅β沸石性质研究 Ⅱ.有机吸附质的吸/脱附行为及其吸附热的测定显示文摘运用热分析技术研究胺类、烷烃类、芳香烃类、醇类在具完美骨架的合成得到的全硅 β沸石中的脱附行为 ,测定亲和性指数AT 值和负载量 .发现烷烃类、胺类、芳香族化合物都对全硅β沸石骨架表现出亲和性 ,而醇类由于羟基的存在表现出对骨架的憎性 ,结合吸附热等数据讨论了各类吸附质与骨架相互作用 (主 /客体相互作用 )的性质 . | 宋茂莹 王喜庆 钱斌 曾宇 龙英才 | 2002 | 化学学报2002,60,3: | 3 |
| 7 | A General and Efficient CuBr2-Catalyzed N-Arylation of Secondary Acyclic Amides显示文摘 | 王满刚 于华 尤心稳 吴军 商志才 | 2012 | Chinese Journal of Chemistry2012,30,10: | 2 |
| 8 | 圆角化的图形区域直骨架及其算法显示文摘在直骨架定义的基础上提出了一种新的图形区域骨架,它仅包含直线边,在结构上比基于Voronoi图的圆骨架更简单,在区域形状描述上比直骨架更接近圆骨架;还提出了一种计算该骨架的算法,在原有直骨架算法的基础上加入了一个对边界凸点的圆角化的预处理过程,并且对实际计算中的特殊碰撞问题进行了处理,以提高计算的鲁棒性.实验结果表明了文中算法的鲁棒性和有效性. | 田启明 罗予频 胡东成 | 2005 | 计算机辅助设计与图形学学报2005,17,12: | 2 |
| 9 | Integrating Factors and Conservation Theorems of Lagrangian Equations for Nonconservative Mechanical System in Generalized Classical Mechanics显示文摘 | QIAO Yong-Fen ZHAO Shu-Hong | 2006 | Communications in Theoretical Physics2006,46,1X: | 2 |
| 10 | A New Type of Conserved Quantity of Mei Symmetry for Lagrange Systems显示文摘 | DING Ning FANG Jian-Hui WANG Peng ZHANG Xiao-Ni | 2007 | Communications in Theoretical Physics2007,48,5X: | 1 |
| 11 | A General Approach to the Construction of Conservation Laws for Birkhoffian Systems in Event Space显示文摘For a Birkhoman system in the event space,a general approach to the construction of conservation lawsis presented.The conservation laws are constructed by finding corresponding integrating factors for the parametricequations of the system.First,the parametric equations of the Birkhoffian system in the event space are established,and the definition of integrating factors for the system is given;second the necessary conditions for the existence ofconservation laws are studied in detail,and the relation between the conservation laws and the integrating factors ofthe system is obtained and the generalized Killing equations for the determination of the integrating factors are given;finally,the conservation theorem and its inverse for the system are established,and an example is given to illustrate theapplication of the results. | ZHANG Yi | 2008 | Communications in Theoretical Physics2008,50,10: | 1 |
| 12 | Lie Symmetrical Hojman Conserved Quantity of Relativistic Mechanical System显示文摘In this paper, we study the Lie symmetrical Hojman conserved quantity of a relativistic mechanical system under general infinitesimal transformations of groups in which the time parameter is variable. The determining equation of Lie symmetry of the system is established. The theorem of the Lie symmetrical Hojman conserved quantity of the system is presented. The above results are generalization to Hojman's conclusions, in which the time parameter is not variable and the system is non-relativistic. An example is given to illustrate the application of the results in the last. | FANGJian-Hui PENGYong YANXiang-Hong | 2005 | Communications in Theoretical Physics2005,43,6: | 1 |
| 13 | Investigation of Electrochemical Charging Behaviors of 'Naked' Gold Nanoparticles Ensembles in Aqueous Media显示文摘Gold nanoparticles were immobilized onto the electrode surface by simple self-assembly technique. Interestingly, the ensembles of these nanoparticles exhibit quantized charging behaviors in aqueous solution. Possible mechanism for such behaviors was proposed. | 程文龙 韩晓军 彭章泉 董绍俊 汪尔康 | 2002 | Chinese Journal of Chemistry2002,20,10: | 1 |
| 14 | Symmetries and Mei Conserved Quantities for Nonholonomic Systems with Servoconstraints显示文摘这篇论文专注于学习对称和称为 Mei 的保存数量的一种新类型为有 Servoconstraints 的 Nonholonomic 系统的保存数量。Mei 对称, Noether 对称,和谎言对称的标准被给。条件和保存数量从这三对称推出了的 Mei 的表格被获得。一个例子被给说明结果的申请。 | XIA Li-Li WANG Xian-Jun ZHAO Xian-Lin | 2009 | Communications in Theoretical Physics2009,51,1: | 0 |
| 15 | Convenient Synthesis of 3,5-Biscarbamoyl-pyridine Derivatives显示文摘为 3,5-bis-carbamoyl-2,6-dimethylpyridine 衍生物的合成的一个有效、方便的方法被完成在对由有 pyrazoles 在用作离开的 -2,6-dimethylpyridine, 组织的 3,5 二度(3,5-dimethyl-1-pyrazolyl-carbonyl ) 的苯胺的反应的优秀收益好。产品的结构被系列数据和微量分析证实。 | 汪霞云 朱逸雯 张敏 陆东亮 钱群 陈雅丽 曹卫国 宋力平 邓红梅 | 2011 | Chinese Journal of Chemistry2011,29,10: | 0 |
| 16 | Mei Symmetry and Lutzky Conserved Quantity for Nonholonomic Mechanical System with Unilateral Constraints显示文摘In this paper,we study the Mei symmetry which can result in a Lutzky conserved quantity for nonholonomic mechanical system with unilateral constraints.The definition and the criterion of the Mei symmetry for the system are given.The necessary and sufficient condition under which the Mei symmetry is a Lie symmetry for the system is obtained. A Lutzky conserved quantity deduced from the Mei symmetry is gotten.An example is given to illustrate the application of our results. | JING Hong-Xing LI Yuan-Cheng | 2008 | Communications in Theoretical Physics2008,49,3: | 0 |
| 17 | Hojman Conserved Quantities for Birkhoffian Systems in Event Space显示文摘This paper focuses on studying a Hojman conserved quantity directly derived from a Lie symmetry fora Birkhoffian system in the event space.The Birkhoffian parametric equations for the system are established,and thedetermining equations of Lie symmetry for the system are obtained.The conditions under which a Lie symmetry ofBirkhoffian system in the event space can directly lead up to a Hojman conserved quantity and the form of the Hojmanconserved quantity are given.An example is given to illustrate the application of the results. | ZHANG Yi | 2008 | Communications in Theoretical Physics2008,50,7: | 0 |
| 18 | A New Type of Conserved Quantity of Mei Symmetry for Relativistic Variable Mass Mechanical System in Phase Space显示文摘在这篇论文,保存数量的一种新类型直接为相对论的可变质量从 Mei 对称推断在阶段空格的系统被学习。定义和为系统的 Mei 对称的标准被给。为存在和新保存数量的形式的条件被获得。最后,一个例子被给说明结果的应用程序。 | ZHANG Xiao-Ni FANG Jian-Hui LIN Peng PANG Ting | 2008 | Communications in Theoretical Physics2008,49,5: | 0 |
| 19 | Lie Symmetry and Generalized Mei Conserved Quantity for Nonconservative Dynamical System显示文摘沿着系统的轨道基于全部的时间衍生物,为非保守的动态系统,保存数量间接地从系统的谎言对称推出了的概括 Mei 被学习。第一,系统的谎言对称被给。然后,谎言对称是 Mei 对称的必要、足够的在下面条件被介绍,保存数量间接地从系统的谎言对称推出了的概括 Mei 被获得。最后,一个例子被给说明结果的申请。 | JING Hong-Xing LI Yuan-Cheng | 2008 | Communications in Theoretical Physics2008,49,5: | 0 |
| 20 | Lie Symmetry and Conserved Quantities for Mechanical-Electrical Systems显示文摘在这篇论文,我们为一个机械电的系统学习谎言对称和保存数量。为这个系统的谎言对称的标准被给。概括 Hojman 保存了数量并且概括了保存数量从谎言对称推出了的 Lutzky 因为系统被获得。一个例子被举说明结果。 | JING Hong-Xing LI Yuan-Cheng | 2008 | Communications in Theoretical Physics2008,49,6: | 0 |