作者： Wu, XL;Gou, BC;Wang, F （¹Beijing Inst Technol, Dept Phys, Beijing 100081, Peoples R China.）

出处： CANADIAN JOURNAL OF PHYSICS 2003 Vol.81 No.12 P1419-1425

关键词： CLOSE-COUPLING CALCULATION; N = 2; ISOELECTRONIC SEQUENCE; OSCILLATOR-STRENGTHS; NEUTRAL HELIUM; RYDBERG SERIES; C4+ IONS; HE ATOM; CLASSIFICATION; PHOTOIONIZATION

摘要： Energies and fine-structure corrections for the doubly excited P-3(e) and D-3(e) states of the helium atom are calculated using the Rayleigh-Ritz vari ...

作者： Wang, F;Gou, BC;Wu, XL;Han, LH （¹Beijing Inst Technol, Dept Appl Phys, Beijing 100081, Peoples R China.）

出处： INTERNATIONAL JOURNAL OF MODERN PHYSICS C 2003 Vol.14 No.5 P549-560

关键词： HARTREE-FOCK CALCULATIONS; ISOELECTRONIC SEQUENCE; BERYLLIUMLIKE IONS; QUADRUPOLE MOMENT; MCHF CALCULATIONS; TRANSITION DATA; FINE-STRUCTURES; ISOTOPE SHIFTS; LARGE-SCALE; LITHIUM

摘要： The Rayleigh-Ritz variational method is carried out with a multiconfiguration-interaction wave function and restricted variational method to obtain th ...

作者： Liu, B;Gao, BQ;Tan, W;Ren, W （¹Beijing Inst Technol, Dept Elect Engn, Beijing 100081, Peoples R China.）

出处： CHINESE JOURNAL OF ELECTRONICS 2003 Vol.12 No.2 P293-296

关键词： EQUATIONS

摘要： A new time domain algorithm (named ADI/R-FDTD), which combines two modified finite-difference time-domain (FDTD) methods (ADI-FDTD and R-FDTD), is pro ...

作者： Gou, BC;Yu, KZ;Wang, F;Wu, XL （¹Beijing Inst Technol, Dept Appl Phys, Beijing 100081, Peoples R China.）

出处： CHINESE PHYSICS 2003 Vol.12 No.9 P951-954

关键词： ISOELECTRONIC SEQUENCE; AUTOIONIZING STATES; RESONANCES

摘要： Some triply excited states of He- ion are studied using the saddle-point complex-rotation method. The energies and Auger widths of these resonances ar ...

作者： Wang, F;Gou, BC （¹Beijing Inst Technol, Dept Appl Phys, Beijing 100081, Peoples R China.）

出处： JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS 2003 Vol.36 No.2 P331-340

关键词： HARTREE-FOCK CALCULATIONS; BE-LIKE SYSTEMS; ISOELECTRONIC SEQUENCE; LITHIUM; TRANSITION; CONSTANTS

摘要： The saddle-point variational method and restricted variational method are used to obtain the relativistic energies of high-lying core-excited states 1 ...

作者： He, XM;Ge, WG （¹Beijing Inst Technol, Dept Appl Math, Beijing 100081, Peoples R China.）

出处： COMPUTERS & MATHEMATICS WITH APPLICATIONS 2003 Vol.45 No.4-5 P765-769

关键词： DIMENSIONAL P-LAPLACIAN; POSITIVE SOLUTIONS

摘要： In this paper, we investigate a quasilinear second-order differential equation with Dirichlet boundary conditions. The existence of an open interval o ...

作者： Cui, W;Chen, H;Han, YQ （¹Beijing Inst Technol, Dept Elect Engn, Beijing 100081, Peoples R China.）

出处： CHINESE JOURNAL OF ELECTRONICS 2003 Vol.12 No.1 P144-146

摘要： A circuit design of on-chip clock generation which improves the duty cycle performance and prevents latch-up effect is described. The circuit provides ...

作者： Liang, JH;Yao, GW （¹Beijing Inst Technol, Sch Life Sci & Technol, Beijing 100081, Peoples R China.）

出处： HETEROCYCLES 2003 Vol.60 No.11 P2527-2534

关键词： ERYTHROMYCIN-A; CHEMICAL MODIFICATION; ANTIBACTERIAL ACTIVITY; SELECTIVE METHYLATION; O-METHYLATION; CLARITHROMYCIN; DERIVATIVES

摘要： The ratio of E/Z of 2'-,4"-O-bis(trimethylsilyl)erythromycin A 9-O-(1-isopropoxycyclohexyl) oxime were much higher prepared in CH3CN than those in CH2 ...

作者： Wang, ZW;Wang, LS （¹Beijing Inst Technol, Sch Chem & Environm Engn, Beijing 100081, Peoples R China.）

出处： GREEN CHEMISTRY 2003 Vol.5 No.6 P737-739

关键词： ACYLATION; OXIDES

摘要： The Friedel - Crafts reaction of PCl3 and benzene in [ BuPy] Cl - XAlCl3 ionic liquids ( ILs) was investigated for clean synthesis of dichlorophenylph ...

作者： Zhu, R;Li, QS （¹Beijing Inst Technol, Sch Chem Engn & Mat Sci, Beijing 100081, Peoples R China.）

出处： THEORETICAL CHEMISTRY ACCOUNTS 2003 Vol.110 No.2 P85-91

关键词： PERIODIC PERTURBATIONS; CHEMICAL-REACTION; TIME-DELAY; OSCILLATIONS; SYSTEMS; DYNAMICS

摘要： We present numerical simulations of the three-variable model of the Belousov-Zhabotinsky reaction developed by Gyorgyi and Field, where chaos can occu ...