growth-factor
发表于 2025-3-23 11:03:41
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Ascendancy
发表于 2025-3-23 17:21:42
Structure of Polymer Molecules and Supermolecular Structuresical properties are determined not only by changes in shape conformation and by motion of individual molecules of the polymers, but by the behaviour of larger and more complex structural formations as well. The interphase boundaries of these formations, known as supermolecular structures, are the si
relieve
发表于 2025-3-23 20:16:17
Ion-Exchange Membranes—Correlation Between Structure and Functione of the theoretical framework of irreversible thermodynamics as first applied by Staverman. to membrane systems, and as amplified by a number of other investigators, particularly Kedem and Katchalsky.. Here, we measure fluxes and generalized forces (the latter all too often involving the estimation
交响乐
发表于 2025-3-23 23:53:03
Thermally Stable Polymersle polymers are generally considered to be those which will withstand much higher temperatures without loss of strength or change of structure. In general we expect these materials to withstand at least 300°C in air and up to 500°C or higher in inert atmospheres. Polymers which show these properties
angina-pectoris
发表于 2025-3-24 05:53:50
Infrared Spectroscopy and Polymer Structurerom our ability to analyse the spectrum theoretically by means of a normal coordinate analysis. This technique consists of calculating the normal vibration frequencies of a molecule from information on its structure and internal force field. From such a calculation we obtain the values of the freque
VOK
发表于 2025-3-24 09:11:22
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不透气
发表于 2025-3-24 14:34:25
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BLANK
发表于 2025-3-24 18:02:56
Nuclear Magnetic Resonance and Optical Studies of Polypeptide Chain Conformationculminating in the complete x-ray determination of the structures of ., and . Few problems in natural science have been subjected to such a heavy assault with such a variety of weapons. The most important of these, of course, has been x-ray diffraction. One cannot imagine at present any other techni
玛瑙
发表于 2025-3-24 20:40:36
Optical Activity and Optical Rotatory Dispersion in Synthetic Polymershe most powerful since, in general, optical activity is strongly dependent on conformational equilibria.. Its use, however, is seriously hindered by the difficulty in calculating the optical activity even of small molecules theoretically. This difficulty can be partially solved in some cases by usin
ARENA
发表于 2025-3-24 23:29:14
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