期刊：
BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS,1986年851(3):469-474 ISSN：0005-2728
通讯作者：
Chen, M.
作者机构：
CHINESE ACAD SCI,INST BIOPHYS,BEIJING,PEOPLES R CHINA.;CENT CHINA NORMAL UNIV,DEPT CHEM,WUHAN,PEOPLES R CHINA.;[GU, LQ; LIU, BL] Department of Chemistry, Central China Normal University, Wuhan, China;[ZHU, QS; CHEN, M] Institute of Biophysics, Academia Sinica, Beijing, China
通讯机构：
[Chen, M.] I;Institute of Biophysics, Academia Sinica, Beijing, China
关键词：
(Pig-heart mitochondria);Cytochrome bc1 complex;Plastoquinone;Respiratory chain;Succinate:cytochrome c reductase;Ubiquinone
期刊：
EUROPEAN PHYSICAL JOURNAL C,1986年32(1):93-99 ISSN：1434-6044
通讯作者：
ZHUANG, PF
作者机构：
[ZHUANG, PF; WANG, ZQ; LIU, LS] Institute of Particle Physics, Hua-Zhong Normal University, Wuhan, China
通讯机构：
[ZHUANG, PF] H;HUA ZHONG NORMAL UNIV,INST PARTICLE PHYS,WUHAN,PEOPLES R CHINA.
关键词：
Field Theory;Elementary Particle;Quantum Field Theory;Average Rapidity;Particle Acceleration
摘要：
The mechanism of high-energyA′−A collisions (A>A′, A′
1/3≫1) and the space-time evolution of the fluid formed in the collision are analysed. The corresponding 1+1 dimensional hydrodynamic equations are set up. The average rapidity distributions are estimated and compared with cosmic ray data. The origin of the unsymmetry of rapidity distributions is explained.
期刊：
SCIENTIA SINICA SERIES A-MATHEMATICAL PHYSICAL ASTRONOMICAL & TECHNICAL SCIENCES,1986年29(10):1063-1072
通讯作者：
LIU, LS
作者机构：
Institute of Particle Physics;Central China Normal University;Wuhan
通讯机构：
[LIU, LS] C;CENT CHINA NORMAL UNIV,INST PARTICLE PHYS,WUHAN,PEOPLES R CHINA.
摘要：
<正> Starting from the results of p collider（SPS） experiments, the mechanism of hadronhadron nondiffractive processes is analyzed. Assuming that the final state hadrons are produced in three rapidity regions, their transverse energies are taken randomly from the kinetic energies of the incident particles, and that their longitudinal momenta are distributed with equal probability, the multiplicity and rapidity distributions and the correlation of the latter with multiplicity can be obtained, and the results agree well with the experimental data. This indicates that the nondiffractive hadronic processes are stochastic in nature in both of the two mutually perpendicular directions.
期刊：
Chinese Physics: selected translations from current issues of major Chinese physics and astronomy journals,1985年5(4):934-937 ISSN：0273-429X
通讯作者：
LIU, LS
作者机构：
CHINESE ACAD SCI,INST ATOM ENERGY,BEIJING,PEOPLES R CHINA.;BEIJING UNIV,BEIJING,PEOPLES R CHINA.;[LIU, LS] HAUZHONG NORMAL UNIV,HAUZHONG,PEOPLES R CHINA.
通讯机构：
[LIU, LS] H;HAUZHONG NORMAL UNIV,HAUZHONG,PEOPLES R CHINA.
期刊：
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL,1985年18(1):149-164 ISSN：1751-8113
通讯作者：
NI, GJ
作者机构：
[NI, GJ; CHEN, W; XU, JJ] HUAZHONG NORMAL UNIV,DEPT PHYS,WUHAN,PEOPLES R CHINA.;[NI, GJ] FUDAN UNIV,INST MODERN PHYS,SHANGHAI,PEOPLES R CHINA.
通讯机构：
[NI, GJ] F;FUDAN UNIV,INST MODERN PHYS,SHANGHAI,PEOPLES R CHINA.
摘要：
The authors present a new formulation of the two-fluid model, the thermal coherent state for handling the relativistic quantum field theory at finite temperature. Three models in one-dimensional space, the phi 4, sine-Gordon and the Schwinger model, are discussed.
期刊：
SCIENTIA SINICA SERIES A-MATHEMATICAL PHYSICAL ASTRONOMICAL & TECHNICAL SCIENCES,1985年28(11):1184-1191
通讯作者：
LIU, LS
作者机构：
CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA.;BEIJING UNIV,DEPT PHYS,BEIJING,PEOPLES R CHINA.;[LIU, LS] CENT CHINA NORMAL UNIV,INST PARTICLE PHYS,WUHAN,PEOPLES R CHINA.
通讯机构：
[LIU, LS] C;CENT CHINA NORMAL UNIV,INST PARTICLE PHYS,WUHAN,PEOPLES R CHINA.
摘要：
<正> The change of the QCD vacuum in the nuclei as a result of the concentration of nucleons is discussed. By using the Lee model the change of the vacuum energy is ealeulated and a self-consistent equation for determining the bag radius of the bounded nucleon is established. Based on this scheme, a satisfactory explanation of the EMC effect in lepton-nucleus deep inelastic scattering is made.
期刊：
Journal of Alloys and Compounds,1985年107(1):131-138 ISSN：0925-8388
通讯作者：
COMPANION, AL
作者机构：
HUAZHONG NORMAL UNIV,DEPT CHEM,WUHAN,PEOPLES R CHINA.;INDIANA UNIV PURDUE UNIV,DEPT CHEM,FORT WAYNE,IN 46805.;[COMPANION, AL] UNIV KENTUCKY,DEPT CHEM,LEXINGTON,KY 40506, USA.
通讯机构：
[COMPANION, AL] U;UNIV KENTUCKY,DEPT CHEM,LEXINGTON,KY 40506, USA.
摘要：
Extended Hückel molecular orbital calculations were carried out for 22-atom clusters simulating the b.c.c. forms of vanadium, chromium, iron and cobalt. In each study the Hiickel parameter K was optimized to reproduce the observed cohesive energy of the isolated metal. Results indicate that in all cases a hydrogen atom implanted in the cluster is more stable in a site of distorted tetrahedral symmetry than in a site of distorted octahedral symmetry, and that a hydrogen atom in either site is stabilized by an adjacent lattice vacancy. An inverse relationship is observed between the computed binding energies of hydrogen atoms in both tetrahedral and octahedral sites and the d electron repulsive potential.
期刊：
Biochemical Society Transactions,1984年12(3):384-386 ISSN：1470-8752
通讯作者：
CAMPO, ML
作者机构：
SUNY ALBANY,NEUROBIOL RES CTR,ALBANY,NY 12222.;HUAZHONG NORMAL UNIV,WUHAN,PEOPLES R CHINA.;[CAMPO, ML] SUNY ALBANY,DEPT BIOL SCI,ALBANY,NY 12222, USA.
通讯机构：
[CAMPO, ML] S;SUNY ALBANY,DEPT BIOL SCI,ALBANY,NY 12222, USA.
作者机构：
[COMPANION, AL; LIU, F] UNIV KENTUCKY,DEPT CHEM,LEXINGTON,KY 40506.;[LIU, F] HUAZHONG NORMAL UNIV,DEPT CHEM,WUHAN,PEOPLES R CHINA.
通讯机构：
[LIU, F] H;HUAZHONG NORMAL UNIV,DEPT CHEM,WUHAN,PEOPLES R CHINA.
摘要：
Extended Hückel Molecular Orbital (EHMO) theory has been applied to the problem of hydrogen atom site location in titanium clusters Ti4, Ti5, Ti17 and Ti20, the latter simulating the hcp metal face (0001). In agreement with previous ab initio calculations, it is found that an external position for the hydrogen atom over a three-fold coordination site is favored over all internal positions in a perfect crystal. Among the internal positions, tetrahedral sites are favored over octahedral ones. The binding energies of internal sites appear to be enhanced by the presence of vacancies; indeed, the only internal site that is stable with respect to the surface is a tetrahedral hole adjacent to a vacancy. Density of states diagrams for Ti17 show a hydrogen induced band at approximately 6.5 eV below the Fermi level, in agreement with photoemission results.
期刊：
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,1984年10(12):1651-1666 ISSN：0954-3899
通讯作者：
NI, GJ
作者机构：
[NI, GJ; CHEN, W; XU, JJ] HUAZHONG NORMAL UNIV,DEPT PHYS,WUHAN,PEOPLES R CHINA.;[NI, GJ] FUTAN UNIV,INST MODERN PHYS,SHANGHAI,PEOPLES R CHINA.
通讯机构：
[NI, GJ] F;FUTAN UNIV,INST MODERN PHYS,SHANGHAI,PEOPLES R CHINA.
摘要：
Using the real-time Green-function approach, the authors investigate the temperature dependence of the Higgs mechanism for the Abelian case and for the Glashow-Weinberg-Salam model. In both cases a critical temperature and the quasiparticle spectra are found. The vacuum expectation value of the Higgs field vanishes at the critical temperature. The implication of such a phase transition is discussed.
摘要：
August, 1982 SHORT PAPERS 957 Spectrophotometric Determination of Magnesium with Beryllon II Zhu Ying-quan and Zhang Lin P.O. Box 82, Chengdu, China and Li Jun-yi Department of Chemistry, Huazhong Normal College, Wuhan, China Keywords : Magnesium determination ; beryllon IT ; spec f r o photometry ; aluminium alloys Beryllon I1 [3-(8-hydroxy-3,6-disulpho-l-naphthylazo)chromotropic acid] is produced by condensation of diazotised H-acid (l-aminonaphth-8-ol-3,6-disulphonic acid) with chromo- tropic acid.l It has been applied as a spectrophotometric reagent for b e r y l l i ~ m , ~ - ~ but has not previously been used to determine magnesium spectrophotometrically. This paper describes conditions for colour development, the composition of the complex and the influence of other ions.I t is satisfactory for the determination of magnesium in aluminium alloys. The proposed method is simple and the reproducibility is good. Experimental Apparatus Instruments Factory). with a glass electrode and a saturated calomel (S.C.E.) reference electrode were used. Visible spectra were recorded with a Model 72 spectrophotometer (Shanghai Analytical A Model pHS-73 pH meter (Tianjin Analytical Instruments Factory) Reagents All solutions were prepared in doubly distilled water. were used. Magnesium solution. hydrochloric acid (1 + 1). standard solution. Beryllon I I solution, 0.1%. Factory) in 100 ml of water. Analytical-reagent grade chemicals Dissolve 0.1000 g of high-purity magnesium metal in 10 ml of Protect it from sunlight and dilute to 20 pg ml-l as a working Dissolve 0.1000 g of beryllon I1 (Shanghai Chemical Reagents958 SHORT PAPERS Analyst, Vol.I07 Recommended Procedure Place an aliquot containing not more than 60 pg of magnesium in a 50-ml calibrated flask. Add 6.0 ml of concentrated ammonia solution (25-28y0) and 5.0 ml of beryllon I1 solution, dilute to the mark with water and mix well. Measure the absorbance at 640 nm in a 1-cm cell against a reagent blank. Determination of Magnesium in Aluminium Alloys Transfer 0.2000g of sample into a 100-ml beaker, cover the beaker and add 10ml of hydrochloric acid (1 + 1) and 2-3 ml of hydrogen peroxide (30%). Heat until the sample has dissolved. Cool, add 40 ml of water and heat to dissolve the salts. Transfer the solution into a 200-ml calibrated flask, dilute to volume with water and mix well.Filter the solution into a 200-ml beaker. Pipette 5ml of the filtrate into a 50-ml calibrated flask, add, with swirling, 5 ml of triethanolamine (TEA) (3 + 2) and then apply the recommended procedure. Remove the cover and carefully evaporate the solution to 1-2 ml. Results and Discussion Absorption Spectra The absorption spectra of beryllon I1 and its complex with magnesium are given in Fig. 1. The wavelength of maximum absorption of the complex was at 640nm and that of the reagent blank at 580 nm (Fig. 1, A). Therefore, 640 nm was adopted as the wavelength to be used throughout this work. 0.3 - W c m 0 + 0.2 - 2 0.1 - A I 1 , I 0 540 580 620 660 700 740 Wavelengthinm Fig. 1. Absorption spectra of A, reagent blank against Mag- water and B, magnesium - Beryllon I1 complex.nesium taken, 40 pg; 1-cm cell. Effect of pH In 50 ml of solution, 2-8 ml of concentrated ammonia solution (25-28y0) (corresponding to pH 11.6-1 1.9) gave maximum and constant absorbance with 40 pg of magnesium, so 6 ml of concentrated ammonia solution (pH 11.8) were added in subsequent determinations. The effect of pH on the absorbance of the complex was investigated. Effect of Reagent Concentration beryllon I1 reagent up to 4 ml and then remains reasonably constant up to 6 ml. 5 ml of beryllon I1 solution were used in subsequent determinations. The results in Fig. 2 show that the absorbance increases with increasing amounts of Hence, Rate of Colour Development up to 10 h after maximum intensity had been reached.Measurement of a solution after various time intervals showed no change in absorbanceAugust, 1982 SHORT PAPERS 959 0.5 ' Q, 0 C 0.3 ' 0, n Q 0 1 2 3 4 5 6 7 Rim I Fig. 2. Effect of Beryllon I1 con- centration ( R ) . Magnesium taken, 40 pg; l-cm cell. Stoicheiometry of the Complex and the molar ratio method.' The stoicheiometry of the complex was determined by the continuous variation method6 Both methods indicate the formation of a 1 : 2 complex. Calculation of the Complex Instability Constant et aZ.,*t9 and was found to be 7.1 x The complex instability constant was calculated according to the procedure of Bent Effect of Foreign Ions The following ions do not interfere when present in the amounts shown in parentheses: Li+, Na+ and K+ (20 mg), Cu2+ (0.2 mg), Ni2+ (0.8 mg), Cr3+ (0.12 mg), Cr6+ (0.8 mg), Mo6+ (0.16 mg), Co2+ (0.08 mg), Pb2+ (0.36 mg) and Zn2+ (0.18 mg).Fe3+ (20 mg) and AP+ (5 mg) can be masked by the addition of TEA and Sr2+ and Ba2+ (8 mg) by the addition of EGTA. Be2+ cannot be tolerated at any level. The effect of foreign ions on the determination of 40 pg of magnesium was examined. Calibration Graph and Sensitivity 0-60 pg of magnesium in 50 ml of solution at 640 nm. (E) was 1.03 x lo4 1 mol-l cm-l. A calibration graph was constructed in the usual way and Beer's law was obeyed for The molar absorptivity coefficient Samples Analysed The results shown in Table I are in reasonable agreement with those obtained by atomic- absorption spectrophotometry. TABLE I DETERMINATION OF MAGNESIUM IN ALUMINIUM ALLOYS The method can be applied to the determination of magnesium in aluminium alloys.Mgfound, % r A \ Sample Atomic-absorption No. Proposed method spectrophotometry Nominal composition, yo 1 0.05 0.048 0.6 Fe, 0.5 Mn, 0.3 Zn, 0.8 Cu, 11.5 Si, 0.049 Mg* 2 0.10 0.099 0.7 Fe, 0.3 Mn, 0.3 Zn, 5.0 Si, 2.0 Cu, 0.10 Mg* 3 0.30 0.31 0.6 Fe, 0.3 Zn, 0.01 Sn, 4.0 Si, 2.0 Cu, 0.5Mn, 0.32 4 0.40 0.41 0.5 Fe, 0.5 Mn, 0.3 Zn, 0.01 Sn, 1.0 Cu, 0.40 Mg* 5 0.50 Mg* 0.495 0.5 Fe, 0.5 Mn, 0.5 Zn, 0.3 Ni, 6.0 Si, 0.1 Cu, 0.52 * Certified value. Mg* Comparison with Other Methods Table 11. is no need for extraction and the complex formed is stable for a long period. The results obtained by using different spectrophotometric reagents are compared in The proposed method is simple and rapid and works over a wide pH range. There960 SHORT PAPERS Analyst, Vol.107 TABLE I1 Reagent Titan Yellow Quinolin-8-01 Xylidyl Blue I Eriochrome Black T Metalphthalein Beryllon I1 COMPARISON OF REAGENTS FOR THE SPECTROPHOTOMETRIC DETERMINATION OF MAGNESIUM Colour 4 Interfering ions stability Reference A/ nm 1 mol-1 cm-l pH range . . 535 1.4 x 103 >12 Al, Ca, Cd, Co, NH,+, 10-30 min 10 . . 405 2.7 x lo3 10.0-10.2 Many metals Stable 11 Ni, Sn, Zn, PO,3- .. 510 3 x 104 8.95 Fe, Cu, A1, Ca, Sr 30 min 12, 13 . . 525 1.8 x lo4 9.6 Analytical group 1-111 Stable 14 metals, PO,+ . . 570 1.8 x lo4 10.2 Al, Cr, Fe, Pb, Ca, Ba, 5 min 15 Mn, Sr . . 640 1.03 x lo4 11.6-11.9 Be, Ca, Fe, A1 10 h This work 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. References Lukin, A. M., and Zavarikhina, G. B., Zh. Anal. Khim., 1956, 11, 393. Suvorovskaya, N. A,, Voskresenskaya, M. M., and Melnikoca, T. A., Nauchn. Soobshch. Inst. Gorn. Markman, A. L., and Galkina, L. L., Uzb. Khim. Zh., 1962, No. 4, 5. Ersitavi, D. I., Brouckek, F. I., and Eristavi, V. D., Tr. Gruz. Politekh. Inst., 1966, NO. 108, 41. Rozenberg, P. A., Lab. Delo, 1963, 9, 11. Job, P., Ann. Chim. (Paris) 1928, 9, 113. Yoe J. H., et al., I n d . Eng. Chem., Anal. Ed., 1944, 16, 111. Bent, H., et al., J . A m . Chem. SOC., 1941, 63, 569. Babko, A. K., “Physicochemical Analysis of Complex Compounds in Solution,” Akademii Nauk Jean, M., Anal. Chim. Acta, 1952, 7, 338. Luke, C . L., and Campbell, M. E., Anal. Chem., 1954, 26, 1778. Mann, C. K., and I’oe, J . H., Anal. Chem., 1956, 28, 202. Mann, C. K., and Yoe, J. H., Anal. Chim. Acta, 1957, 16, 155. Selzer, G., and Ariel, M., Anal. Chim. Acta, 1958, 19, 496. Schwarzenbach, G., Helv. Chim. Acta, 1954, 37, 113. Dela, Moscow, 1960, 6, 63. SSR, Kiev, 1956. Received December 2nd, 1981 Accepted March 52h, 1982
作者机构：
[Zhang, Jianqiang; Zhang, Guoping] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Ding, Liming; Pan, Xiyan; Sun, Jie] Natl Ctr Nanosci & Technol, Ctr Excellence Nanosci CAS, Key Lab Nanosyst & Hierarch Fabricat CAS, Beijing 100190, Peoples R China.;[Pan, Xiyan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China.;[Zhou, Hai] Dongguan Univ Technol, Int Sch Microelect, Dongguan 523808, Peoples R China.
通讯机构：
[Ding, LM ] N;[Zhang, GP ] C;Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;Natl Ctr Nanosci & Technol, Ctr Excellence Nanosci CAS, Key Lab Nanosyst & Hierarch Fabricat CAS, Beijing 100190, Peoples R China.
关键词：
all-inorganic perovskite;cation exchange;CsPbBr3;photodetectors;laser eavesdropping systems
摘要：
The CsPbBr3 photodetector prepared by an in situ cation exchange method exhibits exceptional performance in terms of detectivity, responsivity, and response time. Once integrated into the laser eavesdropping system, it can skillfully capture the sound signals from distant targets, ultimately enabling the successful realization of laser eavesdropping through the mutual conversion of optical and electrical signals. Abstract Owing to the absence of organic cations, all‐inorganic perovskite exhibits superior thermal and irradiation stability compared to organic‐inorganic perovskite. However, it is difficult for the traditional solution method to produce pinhole‐free and phase‐pure all‐inorganic perovskite films, which hinders its application. Here, a method of in situ A‐site cation exchange to synthesize CsPbBr3 films is introduced. The MAPbBr3 films are treated with CsAc solution to initiate cation exchange, where the intermediate product MAAc plays a crucial role in guiding grain growth during evaporation, resulting in the production of pinhole‐free and phase‐pure CsPbBr3 films. The self‐powered photodetector, based on compact and pinhole‐free CsPbBr3 film, exhibits excellent performance with an LDR of 126.7 dB, a detectivity of 1.1 × 1013 Jones, and a rise/decay time of 2.9/25.1 µs. Furthermore, the photodetector maintains over 90% of its original performance after a 2500 s irradiation test and a 30‐day air exposure test. Benefiting from the exceptional device performance and stability, the photodetector proves to be a valuable component in the laser eavesdropping system.
