Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Per Nyholm"'
Autor:
Per Nyholm
Una guerra devastadora sacseja el cor d'Europa. Vladímir Putin vol una Gran Rússia, des de l'oceà Pacífic fins al mar Bàltic. Aquest desig d'expansió és una constant històrica que dura segles, des de Pere el Gran. Ara Rússia terroritza Ucra
Autor:
Per Nyholm
Cuba, la soledat que no s'acaba és el relat periodístic d'un viatge de més de tres mil quilòmetres per aquesta illa del Carib, immersa en una revolució que ja fa més de seixanta anys que s'allarga. ¿És una cruel dictadura, un estat socialista
Autor:
per nyholm
Publikováno v:
dublin ISBN: 9788771842852
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29ae61cc8afbcdbfb1ac02cda433b53f
https://doi.org/10.2307/jj.608231.5
https://doi.org/10.2307/jj.608231.5
Autor:
per nyholm
Publikováno v:
istanbul ISBN: 9788771248975
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2697fe541d3b3022698ba68b4963b9d5
https://doi.org/10.2307/jj.608147.4
https://doi.org/10.2307/jj.608147.4
Publikováno v:
Chemical Engineering and Processing: Process Intensification. 43:1487-1493
A simple two-parameter model was proposed for the kinetics of polyesterification reactions. The kinetic model is based on the true reaction mechanism, i.e. on the shift of the ionic equilibria in the carboxylic acid (RCOOH) protolysis during the reac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3b85cc64cdc9512dae6fb86a320b334
https://doi.org/10.1016/j.cep.2004.01.006
https://doi.org/10.1016/j.cep.2004.01.006
Publikováno v:
Macromolecular Chemistry and Physics. 203:388-392
We demonstrate microphase-separated thermosets based on blends of phenolic resol resin and poly(ethylene oxide)-block-poly(propylene oxide)-block- poly(ethylene oxide) (PEO-PPO-PEO), i.e., so-called Pluronics. Three triblock copolymers are used (PE 9
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d8dbea2d9d457c5b179f06e5bfeb69b
https://doi.org/10.1002/1521-3935(20020101)203:2<388::aid-macp388>3.0.co
https://doi.org/10.1002/1521-3935(20020101)203:2<388::aid-macp388>3.0.co
Publikováno v:
Polymer. 42:9481-9486
We have recently demonstrated a concept to prepare self-organized spherical, cylindrical and lamellar nanostructures of phenolic thermosets by blending novolac and poly(2-vinylpyridine)- block -poly(isoprene), i.e. P2VP- block -PI, followed by therma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8aa85c99f1111261430a11a94b7de2d2
https://doi.org/10.1016/s0032-3861(01)00489-x
https://doi.org/10.1016/s0032-3861(01)00489-x
Publikováno v:
Macromolecules. 34:3046-3049
We demonstrate a concept to prepare thermally cross-linked nanostructured phenolic resins based on self-organization. Novolac, containing hexamethyltetramine (HMTA) as a curing agent, is blended with poly(2-vinylpyridine)-block-poly(isoprene), P2VP-b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8684f1fe0f4e4012ab07eececeb602bb
https://doi.org/10.1021/ma001559m
https://doi.org/10.1021/ma001559m
Autor:
Per Nyholm, Juha Lehtonen, Heikki Haario, Erkki Paatero, Kirsi Immonen, Tommi Harju, Tapio Salmi
Publikováno v:
Chemical Engineering Science. 56:1293-1298
A systematic stoichiometric and kinetic model was developed for the acid-catalysed polyesterification of unsaturated dicarboxylic acids and mixtures of dicarboxylic acids. The model was based on a rigorous treatment of the functional groups and their
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::832d4f30584a310a037977d544766e17
https://doi.org/10.1016/s0009-2509(00)00351-1
https://doi.org/10.1016/s0009-2509(00)00351-1
Publikováno v:
Chemical Engineering Science. 53:113-121
A dynamic model for a system containing a semi-batchwise operating reaction vessel connected to a distillation unit was developed. The approach consisted of kinetic equations for the reactions as well as a dynamic model for the distillation unit. As
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa1ec1b5e40724b3a6505dc46553accb
https://doi.org/10.1016/s0009-2509(97)00194-2
https://doi.org/10.1016/s0009-2509(97)00194-2