诱拐 发表于 2025-3-25 04:58:13
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Book 1966 methods of analysis, which sur pass chemical methods in speed, accuracy, and sensitivity. By these methods it is often possible to arrive at the solution of problems in the investigation of complex mixtures of organic products which are not amenable to the usual chemical methods of analysis. One sblackout 发表于 2025-3-26 00:02:47
Polymers,e, whereas the study of the polymerization processes of monomers not containing benzene or pyridine rings can be conducted only by determining the content of unchanged monomer, when there are B bands it is possible to determine directly the amount of monomer that has polymerized .HAIL 发表于 2025-3-26 03:43:32
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Organosilicon Compounds,iloxane units opens up wide possibilities for the use of the absorption spectra of the latter, both for the purpose of identifying these aromatic derivatives and for their quantitative determination in copolymers .阴郁 发表于 2025-3-26 11:50:02
hysiological role of PARP-1 involves its activation by single strand breaks in DNA after which it transfers ADP-ribose moieties from nicotinamide adenine dinucleotide (NAD.) to various nuclear proteins including histones and even to PARP-1 itself (automodification) forming extended chains of ADP-ribparallelism 发表于 2025-3-26 16:09:58
V. S. Fikhtengol’ts,R. V. Zolotareva,Yu. A. L’vovdely used polymers in industries. However, low electrical and thermal conductivity and poor mechanical strength have been the main problems of PVC limiting its practical applications sofar. Over the past decade, to enhance electrical and thermal conductivity and mechanical strength of PVC, a lot of轻而薄 发表于 2025-3-26 17:29:53
V. S. Fikhtengol’ts,R. V. Zolotareva,Yu. A. L’vov exact rotations as a second independent field intended to describe the rotations of the lattice in defective elastic crystals. The Γ-limit based on the natural scaling consists of a membrane like energy and a. transverse shear energy both scaling with ., augmented by a curvature energy due to the C