共查询到20条相似文献,搜索用时 62 毫秒
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《分析化学》1982,(12)
研究报告期页码 1) 6)11)16)21)26)65)70)74)82)87)91)129)134)138)1土3)1凌8)r、了吐、了.、‘r、矛‘、了吸、了官、J‘、了胜、护叮‘了、了叮、了‘、了胜、了.、(了‘1 1111122222233333152)193)196)199)204)210)214)257)262)267)矛矛几、矛r‘、矛.、‘r、了仁、尹t、J‘‘、fl‘、了几、几口44 4 4 4 4 la 55(272)(277)(281)(321)5弓56、.了、.2、、工、声‘1户、.,了、,产、.产、、了、.夕连0 4 8 2 la一匕吮jg六工J32 33 33 33 34 38 58 39 3940产.、夕‘.、了,、产亨.、护口气矛亨‘了.、产.、沙f、了.、6 6 6 6 6 7 7t了777 8 … 相似文献
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碳60的发现是荣获了1996年诺贝尔化学奖的重大贡献,将我们带进了又一个化学新世界。实践中碳60分了的独特构型引起了中学化学教师和学生的极大兴趣,但尚缺少其分了模型的简易制作方法。作者在教学过程中创造了一种碳60分了模型的制作方法。 相似文献
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自20世纪初期,德国化学家EmilFischer首先合成了甘氨酸二肽片段,并第一次提出“peptide”(多肽)这一名词,多肽化学的研究已经历了100多年的发展.1953年,Vigneand小组首次完成了生物活性肽催产素的合成,并因此于1955年获得了诺贝尔化学奖.1963年,Merrifield提出了多肽固相合成法,并发明了第一台多肽自动合成仪,大大简化了多肽合成的流程、提高了合成的效率,从而促使多肽化学实现了飞跃式发展,Merrifield也因此获得了1984年诺贝尔化学奖.1965年,我国科学家完成了牛结晶胰岛素的合成, 相似文献
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β—环糊精和α—萘乙酸包络物的荧光光谱研究 总被引:5,自引:0,他引:5
本文研究了水溶液中β-环糊精和α-萘乙酸包络反应,研究了包络物的荧光光谱性质,测定了包络物的形成常数,讨论了各种水溶性一元醇对该包络物形成及荧光性质的影响,并对其应用了作了预测。 相似文献
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乙酰乙酸乙酯-BR化学振荡反应的研究 总被引:2,自引:0,他引:2
本文首次报道了乙酰乙酸乙酯-IO-3-H2O2-Mn2+-H2SO4体系的化学振荡反应。研究了各种因素对振荡反应的影响,测定了最佳反应条件及振荡反应的浓度范围。研究了温度变化对振荡反应的影响,并计算了振荡反应的表观活化能,对振荡反应产物进行了分析,并测定了体系主要反应的计量关系,采用UV法对金属离子的作用和催化机理作了研究,探索了BR反应中I2的产生机理及消耗机理,对体系中有关反应物的作用作了说明。在FKN机理的基础上,对BR反应的自催化反应步骤和控制机理进行了初步的探索,并对有关实验现象作了说明。 相似文献
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《Photochemistry and photobiology》1979,29(2):439-444
Book reviewed in this article:
Chemical and Biochemical Applications of Lasers. Volume II. Edited by C. B radley M oore
Laser Spectroscopy III, Springer Series in Optical Spectroscopy. Volume 7. Edited by J. L. H all and J. L. C arlsten
Photosynthesis. Second Edition, D. O. H all and K. K. R ao
The Amphibian Visual System. Edited by K atherine V. F ite
The Physiology and Biochemistry of Seed Dormancy and Germination. Edited by A. A. K han
Phytochrome and Plant Growth. Studies in Biology NO. 68. Edited by R. E. K endrick and B. F rankland
The Science of Photobiology. Edited by K endric C. S mith
Photosensitized Reactions, By M. K oizumi , S. K ato , N. M ataga , T. M atsuura and Y. U sui
Bioenergetics of Membranes, Edited by L. P acker , G. C. P apageorgiou and A. T rebst 相似文献
Chemical and Biochemical Applications of Lasers. Volume II. Edited by C. B radley M oore
Laser Spectroscopy III, Springer Series in Optical Spectroscopy. Volume 7. Edited by J. L. H all and J. L. C arlsten
Photosynthesis. Second Edition, D. O. H all and K. K. R ao
The Amphibian Visual System. Edited by K atherine V. F ite
The Physiology and Biochemistry of Seed Dormancy and Germination. Edited by A. A. K han
Phytochrome and Plant Growth. Studies in Biology NO. 68. Edited by R. E. K endrick and B. F rankland
The Science of Photobiology. Edited by K endric C. S mith
Photosensitized Reactions, By M. K oizumi , S. K ato , N. M ataga , T. M atsuura and Y. U sui
Bioenergetics of Membranes, Edited by L. P acker , G. C. P apageorgiou and A. T rebst 相似文献
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Kinetics of solid state thermal decomposition reactions 总被引:1,自引:0,他引:1
K. N. Ninan 《Journal of Thermal Analysis and Calorimetry》1989,35(4):1267-1278
The author wishes to thank Prof. C. G. R. Nair, Dr. V. R. Gowarikar, Mr. M. R. Kurup and Dr. K. V. C. Rao for their encouragements. Thanks are due to Prof. P. M. Madhusudanan and Dr. K. Krishnan for helpful discussions and to Director, VSSC for the kind permission to publish this work. 相似文献
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P. C. van der Willigen 《Colloid and polymer science》1928,46(1):55-57
Ohne Zusammenfassung
K. C. Sen, Koll.-Zeitschr.38, 253 (1926); D. N. Chakravarti u. N. R. Dhar, Journ.Phys. Chem.29, 1556 (l925);30, 1646 (1926); Zeitschr. f. anorg. Chem.152, 393 (1926); D. N. Chakravarti u. N. R. Dhar, Koll.-Zeitschr.42, 124 (1927); N. R. Dhar, D. N. Chakravarti u. M.N.Chakravarti, Koll.-Zeitschr.44 225 (1928). 相似文献
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Joseph A. Zuclich Joseph M. Harrison Nelson Duráan 《Photochemistry and photobiology》1981,33(1):135-135
Book reviewed in this article:
The Effects of Constant Light on Visual Processes. Edited by T. P. W illiams and B. N. B aker . Plenum Press, New York, 1980. 455 pp. $45.00.
Radiation Biology and Chemistry: Research Developments. Edited by H. E. E dwards , S. N avaratnam , B. J. P arsons and G. O. P hillips . Elsevier Scientific, Amsterdam, 1979. 505 pp. $78.00 相似文献
The Effects of Constant Light on Visual Processes. Edited by T. P. W illiams and B. N. B aker . Plenum Press, New York, 1980. 455 pp. $45.00.
Radiation Biology and Chemistry: Research Developments. Edited by H. E. E dwards , S. N avaratnam , B. J. P arsons and G. O. P hillips . Elsevier Scientific, Amsterdam, 1979. 505 pp. $78.00 相似文献
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《Photochemistry and photobiology》1987,45(5):691-693
Book reviewed in this article:
Chemistry of Atmospheres, An introduction to the chemistry of the atmospheres of Earth, the planets and their satellites .Edited by Richard P. Wayne
Advances in Photochemistry , vol.13 Edited by D. H. Volman, K. Gollnick and G. S. Hammond.
Multiple Photon Infrared Laser Photophysics and Photochemistry . V. N. Bagratashvili, V. S. Leto-khov, A. A. Makarov and E. A. Ryabov. 相似文献
Chemistry of Atmospheres, An introduction to the chemistry of the atmospheres of Earth, the planets and their satellites .Edited by Richard P. Wayne
Advances in Photochemistry , vol.13 Edited by D. H. Volman, K. Gollnick and G. S. Hammond.
Multiple Photon Infrared Laser Photophysics and Photochemistry . V. N. Bagratashvili, V. S. Leto-khov, A. A. Makarov and E. A. Ryabov. 相似文献
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《Photochemistry and photobiology》1981,34(5):657-657
Structure and Bonding , Volume 41, Edited by J. D. D unitz , J. B. G oodenough , P. H emmerich , J. A. I bers , C. K. J ørgensen , J. B. N eilands , D. R einen and R. J. P. W illiams . 相似文献
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The effective medium model [H.C. Brinkman, Appl. Sci. Res. A 1 (1947) 27] is used to calculate the electrophoretic mobility of spheres in a gel with uniform zeta potential on their surface. In the absence of a gel support medium or ion relaxation (the distortion of the ion atmosphere from equilibrium due to the presence of an external flow or electric field), our results reduce to those of Henry [D.C. Henry, Proc. R. Soc. London Ser. A 133 (1931) 106]. The relaxation effect can be ignored for weakly charged particles, or for particles with low absolute zeta potential. Using a procedure similar to that employed by O'Brien and White [R.W. O'Brien, L.R. White, J. Chem. Soc. Faraday Trans. 2 74 (1978) 1607], the relaxation effect is accounted for in the present work and results are presented over a wide range of particle sizes, gel concentrations, and zeta potentials in KCl salt solutions. In the limit of no gel, our results reduce to those of earlier investigations. The procedure is then applied to the mobility of Au nanoparticles in agarose gels and model results are compared to recent experiments [D. Zanchet, C.M. Micheel, W.J. Parak, D. Gerion, S.C. Williams, A.P. Alivisatos, J. Phys. Chem. B 106 (2002) 11758; T. Pons, H.T. Uyeda, I.L. Medintz, H. Mattoussi, J. Phys. Chem. B 110 (2006) 20308]. Good agreement with experiment is found for reasonable choices of the model input parameters. 相似文献
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A. I. Klimuk L. A. Obvintseva A. D. Shepelev V. L. Kuchaev M. P. Dmitrieva E. N. Ushakova A. K. Avetisov 《Russian Journal of Applied Chemistry》2008,81(4):630-634
Decomposition of ozone on commercial and pilot filtering microfibrous materials based on polymers, glass fibers, and carbonized
polymeric fibers was studied.
Original Russian Text A.I. Klimuk, L.A. Obvintseva, A.D. Shepelev, V.L. Kuchaev, M.P. Dmitrieva, E.N. Ushakova, A.K. Avetisov,
2008, published in Zhurnal Prikladnoi Khimii, 2008, Vol. 81, No. 4, pp. 593–597. 相似文献
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Anion-ZEKE-photoelectron spectra of ClO-, OClO-, ClOO- and the van der Waals cluster ArCl- have been measured. Refined or new values for the electron affinity of ClO, OClO and ClOO have been found. The peak positions in these spectra are in very good agreement with former ClO- and OClO- anion-photoelectron spectra (K. M. Gilles, M. L. Polak and W. C. Lineberger, J. Chem. Phys., 1992, 96, 8012) and a recent ArCl- anion-ZEKE spectrum (T. Lenzer, I. Yourshaw, M. Furlanetto, G. Reiser and D. Neumark, J. Chem. Phys., 1992, 110, 9578). The higher resolution of our anion-ZEKE-photoelectron spectrum of OClO- led to a refined assignment of the corresponding anion-photoelectron spectrum. In addition, a strong difference in the relative intensities of the vibrational peaks has been found in the anion-ZEKE-spectrum of OClO- in comparison with the anion-photoelectron spectrum. For the first time, mass selective spectroscopic information has been obtained for ClOO. The strong similarity to the ArCl- spectrum indicates a weakly bound van der Waals cluster Cl.O2. Binding energies of the anion, neutral ground and neutral excited state could be deduced. These are in good agreement with the electron affinities of Cl and ClOO, but differ from theoretical values (K. A. Peterson and H. J. Werner, J. Chem. Phys., 1992, 96, 8948) by a factor of 4.5 and from thermochemically determined values (J. M. Nicovich, K. D. Kreutter, C. J. Shackelford and P. H. Wine, Chem. Phys. Lett., 1991, 179, 367 and S. Baer, H. Hippler, R. Rahn, M. Siefke, N. Seitzinger and J. Troe, J. Chem. Phys., 1991, 95, 6463) by a factor of 9. 相似文献