Zobrazeno 1 - 10
of 35
pro vyhledávání: '"N G, Stepanov"'
Publikováno v:
Thermochimica Acta. 213:313-324
Thermal transformations in the series of poly-n-alkyl acrylates (PAA) have been studied by mass spectrometric thermal analysis method. Thermal degradation of PAA was shown to proceed via a six-membered transition state of the McLafferty rearrangement
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b7682c3614577bf1446feecc69953b7
https://doi.org/10.1016/0040-6031(93)80025-6
https://doi.org/10.1016/0040-6031(93)80025-6
Autor:
V. N. Artem'eva, P. I. Chupans, G. V. Lyubimova, V. V. Kudryavtsev, A. V. Yakimanskii, N. G. Stepanov, L. A. Shibaev, V. M. Denisov
Publikováno v:
Bulletin of the Russian Academy of Sciences Division of Chemical Science. 41:1979-1984
The results of a study, by thermal mass spectrometric analysis and NMR spectroscopy, of the polycondensation of H-complexes are presented from which it is possible to propose a mechanism for the reaction. It is shown that conversion of the H-complexe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a57c9f2926a8ad224b8a26851b6f860a
https://doi.org/10.1007/bf00863359
https://doi.org/10.1007/bf00863359
Autor:
E. M. Nekrasova, V. V. Kudryavtsev, V. N. Artem'eva, N. G. Stepanov, Oleg P. Shkurko, G. N. Fedorova, L. A. Shibaev, V. P. Borovik, Yu. N. Sazanov, V. P. Skilizkova
Publikováno v:
Bulletin of the Russian Academy of Sciences Division of Chemical Science. 41:1797-1800
The thermocyclization of polypyromellitamido acids based on 2,5-bis(p-aminophenyl)pyrimidine and 4,4′-diaminoterphenyl was investigated by thermogravimetric and mass spectrometric analysis. Characteristics of the thermocyclization of pyrimidine-con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1deaf36d40b330b958ee2a9a2dc26f8
https://doi.org/10.1007/bf00863811
https://doi.org/10.1007/bf00863811
Autor:
A. V. Novoselova, T. N. Spirina, Yu. N. Sazanov, T. A. Kostereva, N. G. Stepanov, L. A. Shibaev
Publikováno v:
Journal of Thermal Analysis. 38:1203-1213
The polymer-polymer interactions of a polyamic acid (PAA) with polybases (polyvinylpyrrolidone, polyacrylonitrilc and polyvinylpyridine) were studied by means of mass-spectrometric thermal analysis (MTA), TG, DTA and IR-spectroscopic methods in solut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d472dc6375a9df4d16bb49d802f942c
https://doi.org/10.1007/bf01979180
https://doi.org/10.1007/bf01979180
Publikováno v:
Thermochimica Acta. 186:19-34
Thermal transformations in the poly-4-n-alkylstyrene (PAS) series (from poly-4-methyl-styrene to poly-4-n-decylstyrene) have been studied with the aid of mass-spectrometric analysis, differential scanning calorimetry and thermogravimetric analysis. I
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::785f6c06550ccae888ab1a4f436964b1
https://doi.org/10.1016/0040-6031(91)87019-s
https://doi.org/10.1016/0040-6031(91)87019-s
Publikováno v:
Acta Polymerica. 42:119-125
Under conditions of high temperature, polyimides and their prepolymers undergo a number of chemical transformations, the most part of which relate to reaction of polycondensation. New aspects of thermal cyclodehydration in the presence of heteroaroma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd2e63a022c4ddbc1e26478c396110e3
https://doi.org/10.1002/actp.1991.010420219
https://doi.org/10.1002/actp.1991.010420219
Publikováno v:
International Journal of Polymeric Materials. 14:85-90
The thermal stability and degradation products of the polyalkylstyrenes and polyalkylacrylates homologous series have been investigated by mass-spectrometric thermal analysis. It was shown that crosslinking process is thermodynamically favorable in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af9c30ae89fb396a3002423c5a05abff
https://doi.org/10.1080/00914039008041074
https://doi.org/10.1080/00914039008041074
Publikováno v:
Journal of Thermal Analysis. 36:559-568
The polymer-polymer interactions of a polyamic acid (PAA) with polybases (polyvinylpyrrolidone, polyacrylonitrile and polyvinylpyridine) were studied by means of massspectrometric thermal analysis (MTA), TG, DTA and IR-spectroscopic methods in soluti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3551c98b8189b181e1efbfb68e75c40c
https://doi.org/10.1007/bf01914509
https://doi.org/10.1007/bf01914509
Publikováno v:
Polymer Science U.S.S.R.. 32:1780-1784
Using mass spectrometric thermal analysis and C NMR spectroscopy the authors have investigated a series of poly-4-n-alkylstyrenes (from methyl- to n-decyl-). In the distribution of electron density in the benzene ring the evenness effect shows up as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9a39f1c235e3c4252e2f903e78f8894
https://doi.org/10.1016/0032-3950(90)90286-f
https://doi.org/10.1016/0032-3950(90)90286-f
Autor:
N G, Stepanov
Publikováno v:
Vestnik khirurgii imeni I. I. Grekova. 166(5)
The author proposes an improved technique of amputation at the femur level. It consists in using the circular suture up to the intersection of the femur muscles for hemostasis and covering the bone stump, draining the stump through a special puncture
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::3ef01ca013a2a3a470dda50d4443e076
https://pubmed.ncbi.nlm.nih.gov/18154107
https://pubmed.ncbi.nlm.nih.gov/18154107