ANIM
发表于 2025-3-25 04:29:46
Control of molecular-weight distribution in polyolefins synthesized with Ziegler-Natta catalytic syefins molecular weight distribution (MWD) control. In the present article we shall review scientific and patent literature on this argument..After a short comment on the speculative and industrial importance of polyolefins MWD, an outlook is given on the theories of the origins of the wide MWD usual
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发表于 2025-3-25 08:14:16
Foamed polymers. cellular structure and properties,ular structure anisotropy, cell size distribution, surface area etc. The methods of measurement and calculation of these parameters are discussed. Attempts are made to evaluate the effect and the contribution of each of these parameters to the main physical properties of foamed polymers namely appar
Infant
发表于 2025-3-25 15:44:56
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Sarcoma
发表于 2025-3-25 19:41:14
On the mechanism of olefin polymerization by Ziegler-Natta catalysts,ve centers (mainly with the use of radioactive CO as a tag); b) analysis of the microstructure of polymers with the use of .C-NMR; c) analysis of specific features of highly active supported catalysts; d) quantum-chemical calculation of the electronic structure of active centers and their reactions.
MUT
发表于 2025-3-25 21:26:20
Foamed polymers. cellular structure and properties,ent density, strength and thermoconductivity. The cellular structure of foamed polymers is considered as a particular case of porous statistical systems. Future trends and tasks in the study of the morphology and cellular structure-properties relations are discussed.
output
发表于 2025-3-26 01:02:50
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是剥皮
发表于 2025-3-26 05:10:13
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女上瘾
发表于 2025-3-26 08:50:45
Nicholas Chare,Dominic Williamstion measurements carried out in the absence (NQR.) and in the presence (NMR) of a field of 5.9 . parallel to the .-axis. It is demonstrated that the field causes the reduction of .(.) with respect to .(0) in a range about 10 . above ...
bacteria
发表于 2025-3-26 13:52:17
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Rheumatologist
发表于 2025-3-26 18:22:59
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