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激光浮区生长Bi(Pb)SrCaCuO超导纤维结构特征的研究 激光浮区生长Bi(Pb)SrCaCuO超导纤维结构特征的研究
Science in China Series A-Mathematics, Physics, Astronomy & Technological Science Pub Date : 1999-04-20 DOI: 10.1360/ZA1994-24-4-399
张金仓, 何豫生, 霍玉晶, 何艾生
{"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}
引用次数: 0
氦原子 2 s +1 P 0 较高双激态的电子-电子关联定性特征 氦原子 2 s +1 P 0 较高双激态的电子-电子关联定性特征
Science in China Series A-Mathematics, Physics, Astronomy & Technological Science Pub Date : 1999-04-20 DOI: 10.1360/ZA1994-24-4-404
鲍诚光
{"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}
引用次数: 0
关于 ff ＇的辐角分布 关于 ff ＇的辐角分布
Science in China Series A-Mathematics, Physics, Astronomy & Technological Science Pub Date : 1999-04-20 DOI: 10.1360/ZA1994-24-4-337
杨乐, 杨重骏
{"title":"关于 ff ＇的辐角分布","authors":"杨乐, 杨重骏","doi":"10.1360/ZA1994-24-4-337","DOIUrl":"https://doi.org/10.1360/ZA1994-24-4-337","url":null,"abstract":"设f为一整函数,下级为μ,级为λ,若ff′-1的零点均聚集于q( (i) 当q=1时,λ≤1/2;  (ii)当q=2与μ≥1时,这两条射线之夹角必等于π/λ; (iii)当q≥2时,至少存在两条射线,其夹角不超过π/λ。","PeriodicalId":256661,"journal":{"name":"Science in China Series A-Mathematics, Physics, Astronomy & Technological Science","volume":"6 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":"121995647","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}
引用次数: 0
ZrO 2 相变多晶体塑性变形局部化行为的宏观—细观实验研究 ZrO 2 相变多晶体塑性变形局部化行为的宏观—细观实验研究
Science in China Series A-Mathematics, Physics, Astronomy & Technological Science Pub Date : 1999-04-20 DOI: 10.1360/ZA1994-24-4-383
孙庆平, 赵智军, 卿新林, 陈渭泽, 戴福隆
{"title":"ZrO 2 相变多晶体塑性变形局部化行为的宏观—细观实验研究","authors":"孙庆平, 赵智军, 卿新林, 陈渭泽, 戴福隆","doi":"10.1360/ZA1994-24-4-383","DOIUrl":"https://doi.org/10.1360/ZA1994-24-4-383","url":null,"abstract":"本文首次综合运用高密度光栅、形貌仪以及激光Raman微探针技术对ZrO 2 相变多晶体陶瓷材料的应力协助相变塑性行为进行了宏观—细观实验研究,发现了室温下材料受单轴拉伸和单轴压缩均匀应力以及受三点弯曲载荷时的塑性变形局部化行为,实验结果表明:相变塑性变形局部化以体膨胀剪切带的形式发生,宏观的变形局部化对应着微观上马氏体相变的局部化,这为进一步深入研究相变塑性局部化和相变塑性本构关系提供了重要的实验依据。","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":"132282124","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}
引用次数: 0
Global existence and asymptotic behavior of solutions for the coupled Klein-Gordon-Schrodinger equations Klein-Gordon-Schrodinger耦合方程解的全局存在性和渐近性
Science in China Series A-Mathematics, Physics, Astronomy & Technological Science Pub Date : 1995-12-20 DOI: 10.1360/YA1995-38-12-1444
B. Guo, C. Miao
{"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}
引用次数: 11
Generalization of Bombieri's theorem and its applications Bombieri定理的推广及其应用
Science in China Series A-Mathematics, Physics, Astronomy & Technological Science Pub Date : 1995-12-20 DOI: 10.1360/YA1995-38-12-1432
Lin Jiafa, Zhang Tao
{"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}
引用次数: 5
Theoretical analysis of a parabolic torus reflector antenna with multibeam 多波束抛物面反射面天线的理论分析
Science in China Series A-Mathematics, Physics, Astronomy & Technological Science Pub Date : 1995-12-20 DOI: 10.1360/YA1995-38-12-1520
B. Du, Kezhong Yang, S. Zhong
{"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}
引用次数: 2
Generalized Aharonov-Bohm plus oscillator system 广义Aharonov-Bohm加振子系统
Science in China Series A-Mathematics, Physics, Astronomy & Technological Science Pub Date : 1995-12-20 DOI: 10.1360/YA1995-38-12-1457
Cheng Xuepu, H. Bo-wen, Gu Shangwu
{"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}
引用次数: 0
van der Pol-Duffing-Mathieu型系统主参数共振分岔解的普适分类 van der Pol-Duffing-Mathieu型系统主参数共振分岔解的普适分类
Science in China Series A-Mathematics, Physics, Astronomy & Technological Science Pub Date : 1995-12-20 DOI: 10.1360/ZA1995-25-12-1287
陈予恕, 徐鉴
{"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}
引用次数: 0
Para-product operators and para-linearization on locally compact Vilenkin groups 局部紧维伦金群上的拟积算子与拟线性化
Science in China Series A-Mathematics, Physics, Astronomy & Technological Science Pub Date : 1995-11-20 DOI: 10.1360/YA1995-38-11-1303
Su Weiyi
{"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}
引用次数: 6
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