//www.getgobooth.com/ 必威体育下载 daily 15 2024-08-20 10:33:39 apsoffice@iphy.ac.cn apsoffice@iphy.ac.cn 2024-08-20 10:33:39 zh Copyright ©Acta Physica Sinica All Rights Reserved. 京ICP备05002789号-1 Address: PostCode：100190 Phone: 010-82649829，82649241,82649863 Email: apsoffice@iphy.ac.cn Copyright ©Acta Physica Sinica All Rights Reserved apsoffice@iphy.ac.cn 1000-3290 //www.getgobooth.com/en/article/doi/10.7498/aps.25.181 Author(s): Lü DA-JIONG, GAO JIAN-GUO <br/><p>A synchronised accumulation technique is used to achieve a resolution of up to 10-13 cm for the oscillating amplitude of a laser interferometer. Such a technique is applied to observe the 60.4 Hz gravitational radiation which is possibly emitted from the pulsar NP 0532 of the Crab Nebula. Present experiments show that no such signal is received.</p> <br/>Acta Physica Sinica. 1976 25(3): 181-187. Published 2005-08-03 Author(s): Lü DA-JIONG, GAO JIAN-GUO <br/><p>A synchronised accumulation technique is used to achieve a resolution of up to 10-13 cm for the oscillating amplitude of a laser interferometer. Such a technique is applied to observe the 60.4 Hz gravitational radiation which is possibly emitted from the pulsar NP 0532 of the Crab Nebula. Present experiments show that no such signal is received.</p> <br/>Acta Physica Sinica. 1976 25(3): 181-187. Published 2005-08-03 TENTATIVE OBSERVATIONS ON GRAVITATIONAL RADIATION FROM NP 0532 Lü DA-JIONG, GAO JIAN-GUO 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(3): 181-187. article doi:10.7498/aps.25.181 10.7498/aps.25.181 Acta Physica Sinica 25 3 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.181 181-187 //www.getgobooth.com/en/article/doi/10.7498/aps.25.188 Author(s): AN YING, WU YONG-SHI, DAI YUAN-BEN <br/><p>It is shown that for the model in which nucleons couple with pseudo-scalar mesons, the homogeneous Callan-Symanzik equation can be used to investigate the asym-pototic behavior of electromagnetic form-factors of the nucleons. In this way, the leading-logarithm terms in the perturbation theory of electromagnetic form-factors of the nucleon in this model are calculated, and some more general cases are discussed.</p> <br/>Acta Physica Sinica. 1976 25(3): 188-196. Published 2005-08-03 Author(s): AN YING, WU YONG-SHI, DAI YUAN-BEN <br/><p>It is shown that for the model in which nucleons couple with pseudo-scalar mesons, the homogeneous Callan-Symanzik equation can be used to investigate the asym-pototic behavior of electromagnetic form-factors of the nucleons. In this way, the leading-logarithm terms in the perturbation theory of electromagnetic form-factors of the nucleon in this model are calculated, and some more general cases are discussed.</p> <br/>Acta Physica Sinica. 1976 25(3): 188-196. Published 2005-08-03 THE ASYMPOTOTIC BEHAVIOR OF ELECTROMAGNETIC FORM-FACTORS OF THE NUCLEON AND CALLAN-SYMANZIK EQUATION AN YING, WU YONG-SHI, DAI YUAN-BEN 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(3): 188-196. article doi:10.7498/aps.25.188 10.7498/aps.25.188 Acta Physica Sinica 25 3 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.188 188-196 //www.getgobooth.com/en/article/doi/10.7498/aps.25.197 Author(s): CAO CHANG-QI, QIN DAN-HUA <br/><p>The straton knocked-out diagram is investigated more strictly using the Dyson representation, to clarify: whether the scaling property can indeed be derived from this mechanism and, if so, whether the straton mass is required to be small, and what are the definite criterions for the largeness of v and q2. It is shown that, for large values of v, the straton knocked-out diagram does lead to a scaling property, but the primary result is W1 = vf1(x) and w2 = f2(x), which differs from that of Bjorken. Only by assuming the knocked-out diagram dominance (for deep inelastic scattering) and using the gauge condition, can W1 and W2 be suppressed, thus obtaining the Bjorken scaling. Furthermore, the derivation of scaling merely requires v to be large (according to some definite criterions), but places no restriction on q2. The straton mass M is also not required to be smaller than the nucleon mass. Theoretically, for an arbitrary M, the scaling property can always be derived, provided v is sufficiently large.</p> <br/>Acta Physica Sinica. 1976 25(3): 197-214. Published 2005-08-03 Author(s): CAO CHANG-QI, QIN DAN-HUA <br/><p>The straton knocked-out diagram is investigated more strictly using the Dyson representation, to clarify: whether the scaling property can indeed be derived from this mechanism and, if so, whether the straton mass is required to be small, and what are the definite criterions for the largeness of v and q2. It is shown that, for large values of v, the straton knocked-out diagram does lead to a scaling property, but the primary result is W1 = vf1(x) and w2 = f2(x), which differs from that of Bjorken. Only by assuming the knocked-out diagram dominance (for deep inelastic scattering) and using the gauge condition, can W1 and W2 be suppressed, thus obtaining the Bjorken scaling. Furthermore, the derivation of scaling merely requires v to be large (according to some definite criterions), but places no restriction on q2. The straton mass M is also not required to be smaller than the nucleon mass. Theoretically, for an arbitrary M, the scaling property can always be derived, provided v is sufficiently large.</p> <br/>Acta Physica Sinica. 1976 25(3): 197-214. Published 2005-08-03 DEEP INELASTIC ELECTRON-PROTON SCATTERING (Ⅰ) CAO CHANG-QI, QIN DAN-HUA 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(3): 197-214. article doi:10.7498/aps.25.197 10.7498/aps.25.197 Acta Physica Sinica 25 3 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.197 197-214 //www.getgobooth.com/en/article/doi/10.7498/aps.25.215 Author(s): HE ZUO-XIU, ZHANG ZHAO-XI, HUANG TAO <br/><p>A perturbation series of a quantized composite field theory which is based upon the asymptotic condition defined by the Bethe-Salpeter wave function is derived from the interaction representation. The problem of choosing graphs describing various processes in the straton model is discussed.</p> <br/>Acta Physica Sinica. 1976 25(3): 215-225. Published 2005-08-03 Author(s): HE ZUO-XIU, ZHANG ZHAO-XI, HUANG TAO <br/><p>A perturbation series of a quantized composite field theory which is based upon the asymptotic condition defined by the Bethe-Salpeter wave function is derived from the interaction representation. The problem of choosing graphs describing various processes in the straton model is discussed.</p> <br/>Acta Physica Sinica. 1976 25(3): 215-225. Published 2005-08-03 ON THE PERTURBATION EXPANSION OF THE QUANTIZED COMPOSITE FIELD THEORY HE ZUO-XIU, ZHANG ZHAO-XI, HUANG TAO 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(3): 215-225. article doi:10.7498/aps.25.215 10.7498/aps.25.215 Acta Physica Sinica 25 3 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.215 215-225 //www.getgobooth.com/en/article/doi/10.7498/aps.25.226 Author(s): XU GONG-OU, WANG SHUN-JIN, LIU DUN-HUAN, YANG YA-TIAN, MAO MING-DE <br/><p>Nuclear collective motions are further studied using the generator coordinate-method. Multipole excitations of both spherical and deformed nuclei as well as pairing excitations of both normal and superconducting nuclei are investigated in a unified way.</p> <br/>Acta Physica Sinica. 1976 25(3): 226-234. Published 2005-08-03 Author(s): XU GONG-OU, WANG SHUN-JIN, LIU DUN-HUAN, YANG YA-TIAN, MAO MING-DE <br/><p>Nuclear collective motions are further studied using the generator coordinate-method. Multipole excitations of both spherical and deformed nuclei as well as pairing excitations of both normal and superconducting nuclei are investigated in a unified way.</p> <br/>Acta Physica Sinica. 1976 25(3): 226-234. Published 2005-08-03 THE GENERATOR COORDINATE METHOD AND NUCLEAR COLLECTIVE MOTIONS (Ⅱ)——MULTIPOLE AND PAIRING EXCITATIONS IN EVEN-EVEN NUCLEI XU GONG-OU, WANG SHUN-JIN, LIU DUN-HUAN, YANG YA-TIAN, MAO MING-DE 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(3): 226-234. article doi:10.7498/aps.25.226 10.7498/aps.25.226 Acta Physica Sinica 25 3 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.226 226-234 //www.getgobooth.com/en/article/doi/10.7498/aps.25.235 Author(s): ZHANG SHU-YING <br/><p>The theoretical problems of a compressed-time correlator are investigated from the viewpoint of signal detection. Through discussion of the LMF arid PR signals, some useful conclusions and basic formulas concerning the output signal, spectrum structure, Doppler filter set-up, noise background, SNE gain and signal envelope smoothing are obtained. As a consequence, it has been possible to design an improved sound pulse-compression receiver.</p> <br/>Acta Physica Sinica. 1976 25(3): 235-245. Published 2005-08-03 Author(s): ZHANG SHU-YING <br/><p>The theoretical problems of a compressed-time correlator are investigated from the viewpoint of signal detection. Through discussion of the LMF arid PR signals, some useful conclusions and basic formulas concerning the output signal, spectrum structure, Doppler filter set-up, noise background, SNE gain and signal envelope smoothing are obtained. As a consequence, it has been possible to design an improved sound pulse-compression receiver.</p> <br/>Acta Physica Sinica. 1976 25(3): 235-245. Published 2005-08-03 A THEORETICAL ANALYSIS OF A COMPRESSED-TIME CORRELATOR FOR SIGNAL DETECTION ZHANG SHU-YING 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(3): 235-245. article doi:10.7498/aps.25.235 10.7498/aps.25.235 Acta Physica Sinica 25 3 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.235 235-245 //www.getgobooth.com/en/article/doi/10.7498/aps.25.246 Author(s): XU ZHEN-YONG <br/><p>In this paper a model for underwater acoustic channels is established. By means of this model a general expression is derived for the space-time correlation function produced by a noise source in random multipath dispersion channels.It is shown that the spread and reduction of the correlation function are caused by the multipath propagation of sound waves and the random properties of the underwater acoustic channels. The effect of the dispersion properties of the channels on the correlation function is also discussed.</p> <br/>Acta Physica Sinica. 1976 25(3): 246-253. Published 2005-08-03 Author(s): XU ZHEN-YONG <br/><p>In this paper a model for underwater acoustic channels is established. By means of this model a general expression is derived for the space-time correlation function produced by a noise source in random multipath dispersion channels.It is shown that the spread and reduction of the correlation function are caused by the multipath propagation of sound waves and the random properties of the underwater acoustic channels. The effect of the dispersion properties of the channels on the correlation function is also discussed.</p> <br/>Acta Physica Sinica. 1976 25(3): 246-253. Published 2005-08-03 SPACE-TIME CORRELATION FUNCTION OF A NOISE FIELD IN RANDOM MULTIPATH DISPERSION CHANNELS XU ZHEN-YONG 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(3): 246-253. article doi:10.7498/aps.25.246 10.7498/aps.25.246 Acta Physica Sinica 25 3 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.246 246-253 //www.getgobooth.com/en/article/doi/10.7498/aps.25.254 Author(s): JIA WEI-YI, ZHANG PENG-XIANG <br/><p>More precise analytic expressions for ferromagnetic resonance of single crystals are calculated, the approximation being carried to terms quadratic in the magneto-crystalline anisotropy field. On the basis of these, the problem of the compensation of the temperature instabilities of single crystal YIG microwave devices, caused by the variations of the anisotropy field, is discussed. Significant corrections to the temperature compensation directions that have been in use are introduced. Formulae for the calculation of the temperature characteristics of YIG devices with the applied magnetic field in the corrected compensation directions are given.</p> <br/>Acta Physica Sinica. 1976 25(3): 254-264. Published 2005-08-03 Author(s): JIA WEI-YI, ZHANG PENG-XIANG <br/><p>More precise analytic expressions for ferromagnetic resonance of single crystals are calculated, the approximation being carried to terms quadratic in the magneto-crystalline anisotropy field. On the basis of these, the problem of the compensation of the temperature instabilities of single crystal YIG microwave devices, caused by the variations of the anisotropy field, is discussed. Significant corrections to the temperature compensation directions that have been in use are introduced. Formulae for the calculation of the temperature characteristics of YIG devices with the applied magnetic field in the corrected compensation directions are given.</p> <br/>Acta Physica Sinica. 1976 25(3): 254-264. Published 2005-08-03 ON THE OPTIMUM COMPENSATION OF THE TEMPERATURE INSTABILITIES CAUSED BY THE MAGNETOCRYSTALLINE ANISOTROPY FIELD IN YIG MICROWAVE DEVICES JIA WEI-YI, ZHANG PENG-XIANG 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(3): 254-264. article doi:10.7498/aps.25.254 10.7498/aps.25.254 Acta Physica Sinica 25 3 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.254 254-264 //www.getgobooth.com/en/article/doi/10.7498/aps.25.265 Author(s): DU DONG-SHENG <br/><p></p> <br/>Acta Physica Sinica. 1976 25(3): 265-267. Published 2005-08-03 Author(s): DU DONG-SHENG <br/><p></p> <br/>Acta Physica Sinica. 1976 25(3): 265-267. Published 2005-08-03 A NEW POSSIBLE MODEL FOR THE STRUCTURE OF HADRONS DU DONG-SHENG 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(3): 265-267. article doi:10.7498/aps.25.265 10.7498/aps.25.265 Acta Physica Sinica 25 3 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.265 265-267 //www.getgobooth.com/en/article/doi/10.7498/aps.25.268 Author(s): SUPERCONDUCTING MATERIALS RESEARCH GROUP <br/><p></p> <br/>Acta Physica Sinica. 1976 25(3): 268-269. Published 2005-08-03 Author(s): SUPERCONDUCTING MATERIALS RESEARCH GROUP <br/><p></p> <br/>Acta Physica Sinica. 1976 25(3): 268-269. Published 2005-08-03 THE FABRICATION OF SMALL SUPERCONDUCTING MAGNETS USING MULTIFILAMENTARY Nb&lt;sub&lt;3&lt;/sub&lt;Sn CONDUCTORS SUPERCONDUCTING MATERIALS RESEARCH GROUP 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(3): 268-269. article doi:10.7498/aps.25.268 10.7498/aps.25.268 Acta Physica Sinica 25 3 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.268 268-269 //www.getgobooth.com/en/article/doi/10.7498/aps.25.270 Author(s): RAN QI-ZE <br/><p></p> <br/>Acta Physica Sinica. 1976 25(3): 270-270. Published 2005-08-03 Author(s): RAN QI-ZE <br/><p></p> <br/>Acta Physica Sinica. 1976 25(3): 270-270. Published 2005-08-03 A SIMPLE AND RELIABLE HELIUM LEVEL INDICATOR RAN QI-ZE 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(3): 270-270. article doi:10.7498/aps.25.270 10.7498/aps.25.270 Acta Physica Sinica 25 3 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.270 270-270 //www.getgobooth.com/en/article/doi/10.7498/aps.25.271 Author(s): XIE XIN-NENG <br/><p></p> <br/>Acta Physica Sinica. 1976 25(3): 271-272. Published 2005-08-03 Author(s): XIE XIN-NENG <br/><p></p> <br/>Acta Physica Sinica. 1976 25(3): 271-272. Published 2005-08-03 A SIMPLE TYPE OF PNEUMATIC VACUUM VALVE XIE XIN-NENG 2005-08-03 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(3): 271-272. article doi:10.7498/aps.25.271 10.7498/aps.25.271 Acta Physica Sinica 25 3 2005-08-03 //www.getgobooth.com/en/article/doi/10.7498/aps.25.271 271-272

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