作者: stroke 時(shí)間: 2025-3-21 21:57 作者: Glycogen 時(shí)間: 2025-3-22 00:50
Malcolm I. G. Bloor,Michael J. Wilsonr shown to be erroneous. It soon became accepted that synthetic polymers were based on long chain molecules that could be linear, branched or cross-linked to form networks. The linear polymers could have mean molar masses of millions, corresponding to tens of thousands of skeletal bonds.. 作者: 借喻 時(shí)間: 2025-3-22 04:50 作者: Arteriography 時(shí)間: 2025-3-22 09:47 作者: avenge 時(shí)間: 2025-3-22 14:54 作者: avenge 時(shí)間: 2025-3-22 17:48 作者: 全面 時(shí)間: 2025-3-22 22:59
Introduction,r shown to be erroneous. It soon became accepted that synthetic polymers were based on long chain molecules that could be linear, branched or cross-linked to form networks. The linear polymers could have mean molar masses of millions, corresponding to tens of thousands of skeletal bonds.. 作者: Spinous-Process 時(shí)間: 2025-3-23 03:16
Theory of Cyclic Macromolecules, the theory of ring macromolecules is incomplete and fragmentary. Several gaps will become evident in this chapter, and only a few of them could be filled when writing it. In other cases, the unsolved problems will be mentioned and it is hoped that they may be considered by theoreticians as a challenge and a spur.作者: 王得到 時(shí)間: 2025-3-23 08:14 作者: 正論 時(shí)間: 2025-3-23 13:02
Cyclic Peptides,ed through cysteine-cysteine S-S bridges. Interest in cyclic peptide research was born nearly 40 years ago, when the residue sequence was determined. for the cyclic decapeptide antibiotic gramicidin-.. Since that time, and especially over the last 20 years, research into the structures and functions of cyclic peptides has flourished.作者: Spartan 時(shí)間: 2025-3-23 15:58
https://doi.org/10.1007/978-1-4614-6783-0for X-rays is too weak. The wavelength of the thermal neutrons used (1–10 ?) allows exploration of spatial ranges comparable with X-ray scattering, but the low energies of the relatively heavy neutrons mean that spectroscopic experiments match more closely with infrared or photon correlation techniques.作者: Palliation 時(shí)間: 2025-3-23 21:26
J. M. Carnicer,Mikael S. Floateris and experimentation. In this chapter, we describe the essential procedures which have been followed in preparing and analysing the products of cyclization reactions and in separating fractions of cyclic siloxane material.作者: 防水 時(shí)間: 2025-3-23 23:05 作者: 四溢 時(shí)間: 2025-3-24 05:51
Preparation of Cyclic Polysiloxanes,is and experimentation. In this chapter, we describe the essential procedures which have been followed in preparing and analysing the products of cyclization reactions and in separating fractions of cyclic siloxane material.作者: TOXIC 時(shí)間: 2025-3-24 06:35
Cyclization, Gelation and Network Formation,n in linear and non-linear random polymerizations. In the former, the number of reactive groups per molecule remains at two throughout a polymerization. In the latter, the average number increases without limit as the gel point is passed and a network is formed, with resulting greatly increased opportunities for cyclization.作者: 整體 時(shí)間: 2025-3-24 11:16
Book 1986s of cyclic macromolecules and describes cyclization processes involving long chain molecules. Since 1865, when Kekule proposed a simple ring structure for benzene, larger and larger ring molecules have been synthesized in the laboratory and discovered in nature. Many more examples are to be expecte作者: ellagic-acid 時(shí)間: 2025-3-24 16:11 作者: foliage 時(shí)間: 2025-3-24 21:42 作者: 花束 時(shí)間: 2025-3-25 01:04
Measurement of the Power Consumptionical measurements but from genetic analysis. When the relative positions of a larger number of genes of the bacterium . were determined by genetic crosses, the genes were found to form a single circular linkage map..作者: 裂縫 時(shí)間: 2025-3-25 04:43
Malcolm I. G. Bloor,Michael J. Wilsonlymers became fully established.. As described by Flory,. ring structures had been assigned to some polymers earlier in the century but they were later shown to be erroneous. It soon became accepted that synthetic polymers were based on long chain molecules that could be linear, branched or cross-li作者: 易受騙 時(shí)間: 2025-3-25 08:40 作者: prostatitis 時(shí)間: 2025-3-25 14:36
J. M. Carnicer,Mikael S. Floatere also proved to be the most convenient source of cyclic material for investigations of the properties of cyclic polymers. Several factors combine to make the polysiloxanes eminently suitable for such purposes. High proportions of cyclic material are generated together with linear components of high作者: 鋼筆記下懲罰 時(shí)間: 2025-3-25 19:30 作者: Lament 時(shí)間: 2025-3-25 23:26 作者: BROW 時(shí)間: 2025-3-26 02:21
Advanced DPA Theory and Practiceof chemists for a long time. The most ‘beautiful’ molecules incorporating cyclic structures might be the ‘platonic hydrocarbons’ such as the cubane ., the tetrahedrane . and the dodecahedrane . system..作者: 迅速成長(zhǎng) 時(shí)間: 2025-3-26 07:30
Measurement of the Power Consumptionical measurements but from genetic analysis. When the relative positions of a larger number of genes of the bacterium . were determined by genetic crosses, the genes were found to form a single circular linkage map..作者: COWER 時(shí)間: 2025-3-26 11:45 作者: Facilities 時(shí)間: 2025-3-26 16:22 作者: CHIDE 時(shí)間: 2025-3-26 18:06
http://image.papertrans.cn/d/image/241991.jpg作者: 察覺(jué) 時(shí)間: 2025-3-26 21:03 作者: Adherent 時(shí)間: 2025-3-27 03:20
Spectroscopic Studies of Cyclization Dynamics and Equilibria,This chapter reviews cyclization of polymers and oligomers measured in real time by spectroscopic techniques. The requirement for such an experiment is that the macromolecules must have groups attached to the chain ends (e.g. D~~~~A) such that proximity of A and D, or reaction between A and D, gives rise to an observable event.作者: 拍下盜公款 時(shí)間: 2025-3-27 07:57 作者: 虛度 時(shí)間: 2025-3-27 11:47
978-94-010-8354-6Elsevier Applied Science Publishers Ltd 1986作者: 地牢 時(shí)間: 2025-3-27 16:50
Organic Cyclic Oligomers and Polymers,of chemists for a long time. The most ‘beautiful’ molecules incorporating cyclic structures might be the ‘platonic hydrocarbons’ such as the cubane ., the tetrahedrane . and the dodecahedrane . system..作者: 誘使 時(shí)間: 2025-3-27 18:52
Circular DNA,ical measurements but from genetic analysis. When the relative positions of a larger number of genes of the bacterium . were determined by genetic crosses, the genes were found to form a single circular linkage map..作者: Firefly 時(shí)間: 2025-3-28 00:46
Introduction,lymers became fully established.. As described by Flory,. ring structures had been assigned to some polymers earlier in the century but they were later shown to be erroneous. It soon became accepted that synthetic polymers were based on long chain molecules that could be linear, branched or cross-li作者: OTHER 時(shí)間: 2025-3-28 02:08
Theory of Cyclic Macromolecules,reat beauty. Often the value of this research and its relation to applied polymer science has not been recognized. It is therefore not surprising that the theory of ring macromolecules is incomplete and fragmentary. Several gaps will become evident in this chapter, and only a few of them could be fi作者: Traumatic-Grief 時(shí)間: 2025-3-28 09:50 作者: 易受騙 時(shí)間: 2025-3-28 11:53 作者: 鑲嵌細(xì)工 時(shí)間: 2025-3-28 15:22
Neutron Scattering from Cyclic Polymers,which allows manipulation of the contrast between various parts of the scattering system. This is of most use for studying individual molecules in concentrated solution and bulk samples, but it can be important even for studying dilute solutions in situations where the natural contrast for light or 作者: NIL 時(shí)間: 2025-3-28 22:17
Organic Cyclic Oligomers and Polymers,of chemists for a long time. The most ‘beautiful’ molecules incorporating cyclic structures might be the ‘platonic hydrocarbons’ such as the cubane ., the tetrahedrane . and the dodecahedrane . system..作者: 無(wú)節(jié)奏 時(shí)間: 2025-3-29 00:54 作者: fluoroscopy 時(shí)間: 2025-3-29 03:11 作者: creditor 時(shí)間: 2025-3-29 09:28
Cyclization, Gelation and Network Formation,m polymerizations (as defined in Ref. 1) under conditions of chemical equilibrium. Such polymerizations have been used to good advantage, particularly by Semlyen and collaborators (see earlier chapters), for the preparation of cyclic polymers and the study of the cyclization probabilities for linear作者: 使困惑 時(shí)間: 2025-3-29 15:10
https://doi.org/10.1007/978-3-662-25465-3 den vorgegebenen Regeln. Mit fortschreitender Denkentwicklung erkennen viele Heranwachsende, dass Regeln nicht unumstü?lich sind, sondern auf sozialer übereinkunft beruhen. Gleichzeitig wird ihr moralisches Urteil flexibler, indem die Umst?nde und Beweggründe eines Handelns berücksichtigt werden.
