//www.getgobooth.com/ 必威体育下载 daily 15 2024-08-20 10:33:40 apsoffice@iphy.ac.cn apsoffice@iphy.ac.cn 2024-08-20 10:33:40 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.11.429 Author(s): LIN WEI-GUAN <br/><p>A method is presented here to sum certain type of Fourier series. The series is treated as a response function of a linear electric circuit with lumped constants. This electric circuit, subjected to the action of an external force expressed in the form of another Fourier series derived from the original series to be summed can be formed by inspection or by network synthesis. If this derived series can be put into a closed form, then by applying the steady-state operational technique to this electric circuit, the original series can be expressed in a closed form or in a graphical form.</p> <br/>Acta Physica Sinica. 1955 11(6): 429-438. Published 1955-03-05 Author(s): LIN WEI-GUAN <br/><p>A method is presented here to sum certain type of Fourier series. The series is treated as a response function of a linear electric circuit with lumped constants. This electric circuit, subjected to the action of an external force expressed in the form of another Fourier series derived from the original series to be summed can be formed by inspection or by network synthesis. If this derived series can be put into a closed form, then by applying the steady-state operational technique to this electric circuit, the original series can be expressed in a closed form or in a graphical form.</p> <br/>Acta Physica Sinica. 1955 11(6): 429-438. Published 1955-03-05 THE SUMMATION OF CERTAIN FOURIER SERIES LIN WEI-GUAN 1955-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1955 11(6): 429-438. article doi:10.7498/aps.11.429 10.7498/aps.11.429 Acta Physica Sinica 11 6 1955-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.11.429 429-438 //www.getgobooth.com/en/article/doi/10.7498/aps.11.439 Author(s): YANG LI-MING, LIU HAN-CHAO <br/><p></p> <br/>Acta Physica Sinica. 1955 11(6): 439-452. Published 1955-03-05 Author(s): YANG LI-MING, LIU HAN-CHAO <br/><p></p> <br/>Acta Physica Sinica. 1955 11(6): 439-452. Published 1955-03-05 FURTHER INVESTIGATION ON THE ORBITAL ANGULAR MOMENTUM DISTRIBUTION IN NUCLEI AND NUCLEAR DENSITY YANG LI-MING, LIU HAN-CHAO 1955-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1955 11(6): 439-452. article doi:10.7498/aps.11.439 10.7498/aps.11.439 Acta Physica Sinica 11 6 1955-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.11.439 439-452 //www.getgobooth.com/en/article/doi/10.7498/aps.11.453 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1955 11(6): 453-468. Published 1955-03-05 Author(s): <br/><p></p> <br/>Acta Physica Sinica. 1955 11(6): 453-468. Published 1955-03-05 ИСКЛЮЧЕНИЕ ПРОДОЛЬНЫХ ПОЛЯ В КЛАССИЧЕСКОЙ ЭЛЕКТРОДИНАМИКЕ 1955-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1955 11(6): 453-468. article doi:10.7498/aps.11.453 10.7498/aps.11.453 Acta Physica Sinica 11 6 1955-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.11.453 453-468 //www.getgobooth.com/en/article/doi/10.7498/aps.11.469 Author(s): HO I-DJEN, CHANG KUNG-SOO <br/><p>In the spectrochemical analysis of high speed steels with a small current activated a.c. arc (after Aбрамсон), the results of analysis were found to be affected by different previous heat-treatments given to the steel samples. To study this effect we selected 10 chromium steel samples of different carbon content. Spectrochemical analysis of these samples under different procedures of heat treatment shows that with an a.c. arc (5 amp.) the results of analysis of Cr for annealed and for hardened samples of the same steel are different and the difference increases with the increase of carbon content. We are inclined to think that in a low energy light source, the evaporation and the excitation of the alloying elements vary according to the existing form of carbon and this directly affects the results of spectrochemical analysis. The magnitude of this effect is different for different alloying elements, it is considerable in the case of Cr but is inappreciable in the case of Mn and Si.How to eliminate the effect of micro-structure on spectrochemical analysis was also investigated. It was found that with a low energy light source, the effect can not be eliminated by increasing the time of pre-arcing. However, this effect is considerably reduced by using a spark source or an a.c. arc source of large current.</p> <br/>Acta Physica Sinica. 1955 11(6): 469-478. Published 1955-03-05 Author(s): HO I-DJEN, CHANG KUNG-SOO <br/><p>In the spectrochemical analysis of high speed steels with a small current activated a.c. arc (after Aбрамсон), the results of analysis were found to be affected by different previous heat-treatments given to the steel samples. To study this effect we selected 10 chromium steel samples of different carbon content. Spectrochemical analysis of these samples under different procedures of heat treatment shows that with an a.c. arc (5 amp.) the results of analysis of Cr for annealed and for hardened samples of the same steel are different and the difference increases with the increase of carbon content. We are inclined to think that in a low energy light source, the evaporation and the excitation of the alloying elements vary according to the existing form of carbon and this directly affects the results of spectrochemical analysis. The magnitude of this effect is different for different alloying elements, it is considerable in the case of Cr but is inappreciable in the case of Mn and Si.How to eliminate the effect of micro-structure on spectrochemical analysis was also investigated. It was found that with a low energy light source, the effect can not be eliminated by increasing the time of pre-arcing. However, this effect is considerably reduced by using a spark source or an a.c. arc source of large current.</p> <br/>Acta Physica Sinica. 1955 11(6): 469-478. Published 1955-03-05 EFFECT OF MICRO-STRUCTURE OF THE SPECIMEN ON THE SPECTROCHEMICAL ANALYSIS OF ALLOY STEELS HO I-DJEN, CHANG KUNG-SOO 1955-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1955 11(6): 469-478. article doi:10.7498/aps.11.469 10.7498/aps.11.469 Acta Physica Sinica 11 6 1955-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.11.469 469-478 //www.getgobooth.com/en/article/doi/10.7498/aps.11.479 Author(s): KE TING-SUI, MA YING-LIANG <br/><p>Internal friction in hardened carbon steels was measured with a torsion pendulum and an internal friction peak was observed around 130℃ when measurements were taken from room temperature upwards. This peak disappeared completely after the temperature of the specimen reached 170℃. This phenomenon was observed in carbon steels containing carbon ranging from 0.29% to 1.4%, and also in an alloy steel. The appearance of this internal friction peak seems to indicate that the transformation product (ε-carbide) formed in the first-stage tempering of martensite is in coherence with its parent phase, and the origin of internal friction is the stress-induced movement of the plane of coherence.The above-mentioned internal friction peak was not observed in 0.25% carbon steel specimens having a martensite structure. However, after such a specimen has been tempered at a temperature around 300℃, an internal friction peak was observed around 150℃. This indicates that the transformation product formed in martensite containing 0.25% carbon in the third-stage tempering is in coherence with its parent phase. Since the internal friction peak associated with this transformation product behaves differently from that associated with this ε-carbide, so it may be concluded that this transformation product is not ε-carbide.</p> <br/>Acta Physica Sinica. 1955 11(6): 479-492. Published 1955-03-05 Author(s): KE TING-SUI, MA YING-LIANG <br/><p>Internal friction in hardened carbon steels was measured with a torsion pendulum and an internal friction peak was observed around 130℃ when measurements were taken from room temperature upwards. This peak disappeared completely after the temperature of the specimen reached 170℃. This phenomenon was observed in carbon steels containing carbon ranging from 0.29% to 1.4%, and also in an alloy steel. The appearance of this internal friction peak seems to indicate that the transformation product (ε-carbide) formed in the first-stage tempering of martensite is in coherence with its parent phase, and the origin of internal friction is the stress-induced movement of the plane of coherence.The above-mentioned internal friction peak was not observed in 0.25% carbon steel specimens having a martensite structure. However, after such a specimen has been tempered at a temperature around 300℃, an internal friction peak was observed around 150℃. This indicates that the transformation product formed in martensite containing 0.25% carbon in the third-stage tempering is in coherence with its parent phase. Since the internal friction peak associated with this transformation product behaves differently from that associated with this ε-carbide, so it may be concluded that this transformation product is not ε-carbide.</p> <br/>Acta Physica Sinica. 1955 11(6): 479-492. Published 1955-03-05 INTERNAL FRICTION PEAKS ASSOCIATED WITH THE TEMPERING OF MARTENSITE IN STEELS KE TING-SUI, MA YING-LIANG 1955-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1955 11(6): 479-492. article doi:10.7498/aps.11.479 10.7498/aps.11.479 Acta Physica Sinica 11 6 1955-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.11.479 479-492 //www.getgobooth.com/en/article/doi/10.7498/aps.11.493 Author(s): Wang Kan-chang, Hsiao Chien, Cheng Jea-chi, Lü Min <br/><p></p> <br/>Acta Physica Sinica. 1955 11(6): 493-498. Published 1955-03-05 Author(s): Wang Kan-chang, Hsiao Chien, Cheng Jea-chi, Lü Min <br/><p></p> <br/>Acta Physica Sinica. 1955 11(6): 493-498. Published 1955-03-05 DECAY OF A NEUTRAL HEAVY MESON Wang Kan-chang, Hsiao Chien, Cheng Jea-chi, Lü Min 1955-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1955 11(6): 493-498. article doi:10.7498/aps.11.493 10.7498/aps.11.493 Acta Physica Sinica 11 6 1955-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.11.493 493-498 //www.getgobooth.com/en/article/doi/10.7498/aps.11.499 Author(s): PAN SHIAO-THUR, CHEN HWEI-NAN <br/><p></p> <br/>Acta Physica Sinica. 1955 11(6): 499-506. Published 1955-03-05 Author(s): PAN SHIAO-THUR, CHEN HWEI-NAN <br/><p></p> <br/>Acta Physica Sinica. 1955 11(6): 499-506. Published 1955-03-05 THE MAGNETIC ANISOTROPY OF A COBALT CRYSTAL PAN SHIAO-THUR, CHEN HWEI-NAN 1955-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1955 11(6): 499-506. article doi:10.7498/aps.11.499 10.7498/aps.11.499 Acta Physica Sinica 11 6 1955-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.11.499 499-506 //www.getgobooth.com/en/article/doi/10.7498/aps.11.507 Author(s): Liu Yi-huan, Tao Tsu-tsoong <br/><p></p> <br/>Acta Physica Sinica. 1955 11(6): 507-510. Published 1955-03-05 Author(s): Liu Yi-huan, Tao Tsu-tsoong <br/><p></p> <br/>Acta Physica Sinica. 1955 11(6): 507-510. Published 1955-03-05 DEVELOPMENT OF SUB-STRUCTURE IN THE DEFORMED ALUMINIUM CRYSTALS (Ⅱ) Liu Yi-huan, Tao Tsu-tsoong 1955-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1955 11(6): 507-510. article doi:10.7498/aps.11.507 10.7498/aps.11.507 Acta Physica Sinica 11 6 1955-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.11.507 507-510

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