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621.
Achasov M. N. Barnyakov A. Yu. Beloborodov K. I. Berdyugin A. V. Berkaev D. E. Bogdanchikov A. G. Botov A. A. Golubev V. B. Dimova T. V. Druzhinin V. P. Zhabin V. N. Kardapoltsev L. V. Kasaev A. S. Kyrpotin A. N. Kovrizhin D. P. Koop I. A. Korol A. A. Kupich A. S. Martin K. A. Melnikova N. A. Muchnoi N. Yu. Obrazovskiy A. E. Otboyev A. V. Pakhtusova E. V. Pugachev K. V. Rogovsky Yu. A. Savchenko Ya. S. Senchenko A. I. Serednyakov S. I. Silagadze Z. K. Surin I. K. Timoshenko M. V. Usov Yu. V. Kharlamov A. G. Shatunov Yu. M. Shwartz D. B. Shtol D. A. 《Physics of Atomic Nuclei》2020,83(5):714-719
Physics of Atomic Nuclei - The results of searches for the process $$e^{+}e^{-}\to\eta^{\prime}\gamma$$ in an experiment with the SND detector at the VEPP-2000 electron–positron collider are... 相似文献
622.
Dr. Vyacheslav Sushev Dr. Yulia Panova Dr. Alexandra Khristolyubova Dr. Natalia Zolotareva Matvey Grishin Dr. Roman Rumyantcev Ekaterina Kozlova Prof. Dr. Georgy Fukin Prof. Dr. Alexander Kornev 《欧洲无机化学杂志》2023,26(23):e202300252
A number of two-deck dicationic 3a,6a-diaza-1,4-diphosphapentalenes (DDP)2X2 (X=halogen or complex ion) have been characterized. Interdeck distances P(1)⋅⋅⋅P(3) and P(2)⋅⋅⋅P(4) in crystal structures, as a rule, significantly exceed the sum of covalent radii, however they are still within the sum of van der Waals radii. The 31P NMR data indicate that phosphorus atoms are equivalent in solution even at low temperatures (233 K). Based on DFT calculations, the formation of two equivalent P−P covalent bonds (<2.4 Å) is energetically unfavorable, despite the absence of steric barriers. The total energy of the model dication as a function of the P⋅⋅⋅P separation has a minimum at the P−P distance of 2.85 Å. This distance corresponds to the highest aromaticity index in the interdeck space (NICS(1.0)=−20.72). The energy of interdeck interactions is estimated at 10–15 kcal/mol. 相似文献
623.
Thermal polymerization of 2-hydroxyethylmethacrylate (HEMA) and radical polymerization initiated by an acrylamid complex of cobalt nitrate in the presence of unmodified and surface treated silicas have been investigated. It has been found that the introduction of fillers, especially silicas with grafted silicon hydride groups, makes an essential effect on the rate and degree of the HEMA polymerization. 相似文献
624.
625.
Yulia G. Bogdanova Valentina D. Dolzhikova Ilya M. Karzov Alexander Yu. Alentiev 《Macromolecular Symposia》2012,316(1):63-70
Summary: A new approach for the determination and comparison of adhesion properties of polymer networks was proposed. One permits to optimize the choice of polymers for composite materials with inorganic fibers (at the absence of binder diffusion to the fiber). For the first time the works of adhesion of polymer to liquids simulating polar or non-polar phases were used for prediction of adhesive properties of network (binder, coupling agent) and for the choice of network provided the best tensile strength of composite material. The correctness of proposed approach was experimentally proved by measuring of tensile strength micro plastics. 相似文献
626.
Yulia Bolbukh Pavlo Kuzema Valentin Tertykh Barbara Gawdzik 《Macromolecular Symposia》2008,267(1):118-122
The structural parameters of porous styrene-divinylbenzene copolymer, unfilled and filled with silica containing surface trimethylsilyl and silicon hydride groups were studied by aniline and p-chloroaniline adsorption. It has been shown that embedding of chemically modified silica affects the material porosity and decreases the copolymer swelling in benzene. 相似文献
627.
Alexander L. Rusanov Zinaida B. Shifrina Elena G. Bulycheva Mukhamed L. Keshtov Marina S. Averina Yulia I. Fogel Klaus Muellen Frank W. Harris 《Macromolecular Symposia》2003,199(1):97-108
The series of new bis(naphthalic anhydrides) was prepared through Diels-Alder cycloaddition. The Diels-Alder cycloaddition was used as a synthetic route to new phenylated monomers as well as to polymers. All polymers synthesized revealed to be soluble in a wide range of organic solvents such as toluene, THF, chloroform, and displayed high thermostability. Therefore, they can be processed easily and are promising candidates for advanced coating systems as well as for electrooptical applications. 相似文献