Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Steinar Hagen"'
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 38:1366-1378
Residual vinyl groups in macroporous monosized polymer particles of poly(meta-DVB) and poly(para-DVB) prepared with toluene and 2-EHA as porogens have been reacted with aluminum chloride as Friedel–Crafts catalyst with and without the presence of l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89b51bf504b6a2ef9ee8f821fdea5dfa
https://doi.org/10.1002/(sici)1099-0518(20000415)38:8<1366::aid-pola21>3.0.co
https://doi.org/10.1002/(sici)1099-0518(20000415)38:8<1366::aid-pola21>3.0.co
Publikováno v:
Journal of Applied Polymer Science. 76:152-169
Macroporous, monosized poly(meta-divinylbenzene) and poly(para-divinylbenzene) beads have been prepared by the two-step activated swelling method with toluene or 2-ethylhexanoic acid as pore-forming agents. The type of divinylbenzene isomer as well a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26560a4cb20949f2b750344b3d6b1558
https://doi.org/10.1002/(sici)1097-4628(20000411)76:2<152::aid-app4>3.0.co
https://doi.org/10.1002/(sici)1097-4628(20000411)76:2<152::aid-app4>3.0.co
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 37:3973-3990
Macroporous polymers of pure meta-divinylbenzene (meta-DVB) and pure para-divinylbenzene (para-DVB) have been prepared in the presence of toluene and 2-EHA as pore forming agents. The formation of the pore structure has been studied during the polyme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da9f0de49a29d24a93afbcd0b078eabe
https://doi.org/10.1002/(sici)1099-0518(19991101)37:21<3973::aid-pola12>3.0.co
https://doi.org/10.1002/(sici)1099-0518(19991101)37:21<3973::aid-pola12>3.0.co
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 37:3345-3359
The kinetics of the polymerization of pure meta-divinylbenzene (DVB) and pure para-divinylbenzene at 70°C have been studied in the presence of toluene and 2-ethylhexanoic acid. The apparent rate constant ratios (kp/kt)1/2 for these systems have been
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6f3f74498745c59719a3622a7f0b834
https://doi.org/10.1002/(sici)1099-0518(19990815)37:16<3345::aid-pola33>3.0.co
https://doi.org/10.1002/(sici)1099-0518(19990815)37:16<3345::aid-pola33>3.0.co
Autor:
Alfred A. Christy, Jon-Sverre Schanche, Yi-Zeng Liang, Steinar Hagen, Olav M. Kvalheim, Anne Kari Nyhus
Publikováno v:
Vibrational Spectroscopy. 20:47-57
A general pre-treatment procedure for diffuse reflectance infrared spectra is developed for quantitative analysis of macro porous polymer particles. Several different procedures for pre-treatment of diffuse reflectance infrared spectra are compared.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44450adc84136b360114457a9e9de17e
https://doi.org/10.1016/s0924-2031(99)00016-8
https://doi.org/10.1016/s0924-2031(99)00016-8
Autor:
Jon S. Schanche, Olav M. Kvalheim, Anne Kari Nyhus, Alfred A. Christy, Bjørn Grung, Steinar Hagen
Publikováno v:
Applied Spectroscopy. 52:1230-1239
Porous poly(para-divinylbenzene) and poly(meta-divinylbenzene) particles were synthesized from para-divinylbenzene and meta-divinylbenzene monomers with toluene and 2-ethylhexanoic acid as porogens. The residual vinyl groups in the particles were the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24dada71e0e6408b732ba9a3a6e5bf62
https://doi.org/10.1366/0003702981945057
https://doi.org/10.1366/0003702981945057
Autor:
Steinar Hagen, Bjørn E. Christensen, Oddvar Arnfinn Aune, Mildrid H. Myhr, Arvid Berge, John Ugelstad
Publikováno v:
Carbohydrate Polymers. 29:217-223
Three different types of 15μm macroporous polymer particles (MP) based on poly(styrene- co -divinylbenzene), all with an extreme degree of monodispersity, were prepared by the method of ‘activated swelling’. The type and relative content of low
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccc7566654eb54f85ef328667fbcf439
https://doi.org/10.1016/0144-8617(96)00025-2
https://doi.org/10.1016/0144-8617(96)00025-2
Autor:
Knut Nygaard, Steinar Hagen, Hanne Sand Hansen, Reidulv Hatlevoll, Ragnar Hultborn, Anders Jakobsen, Matti Mäntyla, Hans Modig, Eva Munck-Wikland, Bengt Rosengren, Johan Tausjø, Kjell Elgen
Publikováno v:
World Journal of Surgery. 16:1104-1109
In a prospective multicenter study, 186 patients with squamous cell esophageal carcinoma, who after evaluation were considered suitable for surgery, were randomized to 4 treatment groups: Group 1, surgery alone; Group 2, pre-operative chemotherapy (c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e1c60c50db42cb2c3d6ae4678f4bbe2
https://doi.org/10.1007/bf02067069
https://doi.org/10.1007/bf02067069
Publikováno v:
Journal of Chromatography A. 535:147-161
Polymer particles with a highly monodisperse particle size distribution were produced by a two-step microsuspension method. This process is based on the activation of monosized polymer seed particles by the introduction of a low-molecular-weight mate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07deaf6316868a42b13e4a7d83135539
https://doi.org/10.1016/s0021-9673(01)88940-8
https://doi.org/10.1016/s0021-9673(01)88940-8
Autor:
Steinar Hagen
Publikováno v:
Tidsskrift for Den norske legeforening. 129:311-312
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3214ea96e87ee2aa106bd319d8957ca2
https://doi.org/10.4045/tidsskr.09.0073
https://doi.org/10.4045/tidsskr.09.0073