利用激光加热小台基座浮区生长技术,制备出了具有强织构化取向的Bi(Pb)SrCaCuO超导纤维晶体,本文通过微区XRD和SEM方法,系统研究了纤维的织构化结构特征,结果表明,生成纤维的 a - b 平面沿生长轴向排列,c轴垂直于轴向排列,因而为输运电流 J c 提供了最佳的轴向传输路径,讨论了制备条件对纤维结构和超导物理性能的影响。
利用激光加热小台基座浮区生长技术,制备出了具有强织构化取向的Bi(Pb)SrCaCuO超导纤维晶体,本文通过微区XRD和SEM方法,系统研究了纤维的织构化结构特征,结果表明,生成纤维的 a - b 平面沿生长轴向排列,c轴垂直于轴向排列,因而为输运电流 J c 提供了最佳的轴向传输路径,讨论了制备条件对纤维结构和超导物理性能的影响。
{"title":"激光浮区生长Bi(Pb)SrCaCuO超导纤维结构特征的研究","authors":"张金仓, 何豫生, 霍玉晶, 何艾生","doi":"10.1360/ZA1994-24-4-399","DOIUrl":"https://doi.org/10.1360/ZA1994-24-4-399","url":null,"abstract":"利用激光加热小台基座浮区生长技术,制备出了具有强织构化取向的Bi(Pb)SrCaCuO超导纤维晶体,本文通过微区XRD和SEM方法,系统研究了纤维的织构化结构特征,结果表明,生成纤维的 a - b 平面沿生长轴向排列,c轴垂直于轴向排列,因而为输运电流 J c 提供了最佳的轴向传输路径,讨论了制备条件对纤维结构和超导物理性能的影响。","PeriodicalId":256661,"journal":{"name":"Science in China Series A-Mathematics, Physics, Astronomy & Technological Science","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124594210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
本文研究了氦2 s +1P0双激态的第三序列,显示了电子云分布的各向异性,显示了分波构成的异同,并借助于形状密度直观地显示了角关联,确认了两种径-径关联机制,即“推出”和“跃迁”机制,估价了诸态对r1和r2(径向部分)交换的近似对称性.
本文研究了氦2 s +1P0双激态的第三序列,显示了电子云分布的各向异性,显示了分波构成的异同,并借助于形状密度直观地显示了角关联,确认了两种径-径关联机制,即“推出”和“跃迁”机制,估价了诸态对r1和r2(径向部分)交换的近似对称性.
{"title":"氦原子 2 s +1 P 0 较高双激态的电子-电子关联定性特征","authors":"鲍诚光","doi":"10.1360/ZA1994-24-4-404","DOIUrl":"https://doi.org/10.1360/ZA1994-24-4-404","url":null,"abstract":"本文研究了氦2 s +1P0双激态的第三序列,显示了电子云分布的各向异性,显示了分波构成的异同,并借助于形状密度直观地显示了角关联,确认了两种径-径关联机制,即“推出”和“跃迁”机制,估价了诸态对r1和r2(径向部分)交换的近似对称性.","PeriodicalId":256661,"journal":{"name":"Science in China Series A-Mathematics, Physics, Astronomy & Technological Science","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124788251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-12-20DOI: 10.1360/YA1995-38-12-1444
B. Guo, C. Miao
The final value problem for the classical coupled Klein-Gordon-Schrodinger equations is studied in . This leads to the construction of the modified wave operator Ω, for certain scattered data. When initial functions belong to (Ω) which denotes the range domain of Ω, the global existence and asymptotic behavior of solutions of Cauchy problem tor the coupled Klein-Gordon-Schrodinger equations are proved.
{"title":"Global existence and asymptotic behavior of solutions for the coupled Klein-Gordon-Schrodinger equations","authors":"B. Guo, C. Miao","doi":"10.1360/YA1995-38-12-1444","DOIUrl":"https://doi.org/10.1360/YA1995-38-12-1444","url":null,"abstract":"The final value problem for the classical coupled Klein-Gordon-Schrodinger equations is studied in . This leads to the construction of the modified wave operator Ω, for certain scattered data. When initial functions belong to (Ω) which denotes the range domain of Ω, the global existence and asymptotic behavior of solutions of Cauchy problem tor the coupled Klein-Gordon-Schrodinger equations are proved.","PeriodicalId":256661,"journal":{"name":"Science in China Series A-Mathematics, Physics, Astronomy & Technological Science","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123655931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-12-20DOI: 10.1360/YA1995-38-12-1432
Lin Jiafa, Zhang Tao
By using the so-called Hooley-Huxley Contour and zero density estimates for Dirichlet L -function, Bombieri's theorem is established for a class of arithmetic functions whose generating functions satisfy certain analytic conditions. As applications of our theorem, the mean value estimates of L -functions and the distribution of integers representable as sums of two squares are discussed.
{"title":"Generalization of Bombieri's theorem and its applications","authors":"Lin Jiafa, Zhang Tao","doi":"10.1360/YA1995-38-12-1432","DOIUrl":"https://doi.org/10.1360/YA1995-38-12-1432","url":null,"abstract":"By using the so-called Hooley-Huxley Contour and zero density estimates for Dirichlet L -function, Bombieri's theorem is established for a class of arithmetic functions whose generating functions satisfy certain analytic conditions. As applications of our theorem, the mean value estimates of L -functions and the distribution of integers representable as sums of two squares are discussed.","PeriodicalId":256661,"journal":{"name":"Science in China Series A-Mathematics, Physics, Astronomy & Technological Science","volume":"364 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123557135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-12-20DOI: 10.1360/YA1995-38-12-1520
B. Du, Kezhong Yang, S. Zhong
The parametric equations and the formulas of unit normal vector and surface element for a parabolic torus reflector antenna are derived and the mechanism of producing multibeam is proposed, Based on physical optics, the radiation pattern formulas for the antenna are given, with which the effects of geometric parameters on the antenna are studied. The good agreement between the calculated patterns and the measured ones shows that the theory is helpful for designing parabolic torus antennas.
{"title":"Theoretical analysis of a parabolic torus reflector antenna with multibeam","authors":"B. Du, Kezhong Yang, S. Zhong","doi":"10.1360/YA1995-38-12-1520","DOIUrl":"https://doi.org/10.1360/YA1995-38-12-1520","url":null,"abstract":"The parametric equations and the formulas of unit normal vector and surface element for a parabolic torus reflector antenna are derived and the mechanism of producing multibeam is proposed, Based on physical optics, the radiation pattern formulas for the antenna are given, with which the effects of geometric parameters on the antenna are studied. The good agreement between the calculated patterns and the measured ones shows that the theory is helpful for designing parabolic torus antennas.","PeriodicalId":256661,"journal":{"name":"Science in China Series A-Mathematics, Physics, Astronomy & Technological Science","volume":"232 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133802891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-12-20DOI: 10.1360/YA1995-38-12-1457
Cheng Xuepu, H. Bo-wen, Gu Shangwu
A generalized Aboronov-Bohm plus oscillator (ABO) system is worked out. The normalized wave functions and energy eigenvalues for the ABO system are obtained with the path integral method.
{"title":"Generalized Aharonov-Bohm plus oscillator system","authors":"Cheng Xuepu, H. Bo-wen, Gu Shangwu","doi":"10.1360/YA1995-38-12-1457","DOIUrl":"https://doi.org/10.1360/YA1995-38-12-1457","url":null,"abstract":"A generalized Aboronov-Bohm plus oscillator (ABO) system is worked out. The normalized wave functions and energy eigenvalues for the ABO system are obtained with the path integral method.","PeriodicalId":256661,"journal":{"name":"Science in China Series A-Mathematics, Physics, Astronomy & Technological Science","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115543760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-12-20DOI: 10.1360/ZA1995-25-12-1287
陈予恕, 徐鉴
研究了主参数共振情况下具有广义 van der Pol阻尼和五次Duffing恢复力的参数激励非线性系统的二次近似分叉行为.应用具有Z 2 对称的奇异性理论,对系统Z 2 -余维数≥3的分岔行为在拓扑等价的意义下进行了普适分类,使经典的摄动法对参数系统所得出的近似解是否能够在拓扑意义下完全描述原系统的周期响应及其产生分岔之机理得以澄清.数值结果表明的振动特性有突然消失的现象,恰好是系统参数值在Z 2 余维数≥4的情形.
研究了主参数共振情况下具有广义 van der Pol阻尼和五次Duffing恢复力的参数激励非线性系统的二次近似分叉行为.应用具有Z 2 对称的奇异性理论,对系统Z 2 -余维数≥3的分岔行为在拓扑等价的意义下进行了普适分类,使经典的摄动法对参数系统所得出的近似解是否能够在拓扑意义下完全描述原系统的周期响应及其产生分岔之机理得以澄清.数值结果表明的振动特性有突然消失的现象,恰好是系统参数值在Z 2 余维数≥4的情形.
{"title":"van der Pol-Duffing-Mathieu型系统主参数共振分岔解的普适分类","authors":"陈予恕, 徐鉴","doi":"10.1360/ZA1995-25-12-1287","DOIUrl":"https://doi.org/10.1360/ZA1995-25-12-1287","url":null,"abstract":"研究了主参数共振情况下具有广义 van der Pol阻尼和五次Duffing恢复力的参数激励非线性系统的二次近似分叉行为.应用具有Z 2 对称的奇异性理论,对系统Z 2 -余维数≥3的分岔行为在拓扑等价的意义下进行了普适分类,使经典的摄动法对参数系统所得出的近似解是否能够在拓扑意义下完全描述原系统的周期响应及其产生分岔之机理得以澄清.数值结果表明的振动特性有突然消失的现象,恰好是系统参数值在Z 2 余维数≥4的情形.","PeriodicalId":256661,"journal":{"name":"Science in China Series A-Mathematics, Physics, Astronomy & Technological Science","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127967058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-11-20DOI: 10.1360/YA1995-38-11-1303
Su Weiyi
The concept of para-product operators over locally compact Vilenkin groups is established and the applications to the para-linearization in nonlinear problems are studied. This kind of operators plays a special role in dealing with those functions which do not have the classical derivatives.
{"title":"Para-product operators and para-linearization on locally compact Vilenkin groups","authors":"Su Weiyi","doi":"10.1360/YA1995-38-11-1303","DOIUrl":"https://doi.org/10.1360/YA1995-38-11-1303","url":null,"abstract":"The concept of para-product operators over locally compact Vilenkin groups is established and the applications to the para-linearization in nonlinear problems are studied. This kind of operators plays a special role in dealing with those functions which do not have the classical derivatives.","PeriodicalId":256661,"journal":{"name":"Science in China Series A-Mathematics, Physics, Astronomy & Technological Science","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129593556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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