Zobrazeno 1 - 10
of 370
pro vyhledávání: '"Robert W. Lenz"'
Autor:
Robert W. Lenz, N. Koide
Publikováno v:
Journal of Polymer Science: Polymer Symposia. 70:91-105
A series of exactly alternating silarylene-siloxane homopolymers and copolymers was prepared by the step-growth polymerization reaction of arylenedisilanols with bis(ureido)silanes. The polymers were obtained in high molecular weight and were found t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de2688423a01562a92e91d4bd48f9300
https://doi.org/10.1002/polc.5070700108
https://doi.org/10.1002/polc.5070700108
Autor:
Alan N. Schuler, Robert W. Lenz
Publikováno v:
Journal of Polymer Science: Polymer Symposia. 63:343-363
The effects of reaction parameters including copolyester composition, catalyst type and amount, temperature, time, endgroup concentration (molecular weight), and degree of crystallinity were determined for the reorganization of random to block poly(e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71e8ec596294f56d14da9ba18b2b5e81
https://doi.org/10.1002/polc.5070630128
https://doi.org/10.1002/polc.5070630128
Autor:
Robert W. Lenz, Robert H Marchessault
Publikováno v:
Biomacromolecules. 6:1-8
The discovery and chemical identification, in the 1920s, of the aliphatic polyester: poly(3-hydroxybutyrate), PHB, as a granular component in bacterial cells proceeded without any of the controversies which marked the recognition of macromolecules by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::306f0e59138a6f52953d8be8730a6785
https://doi.org/10.1021/bm049700c
https://doi.org/10.1021/bm049700c
Publikováno v:
Biomacromolecules. 5:40-48
Ectothiorhodospira shaposhnikovii is able to accumulate polyhydroxybutyrate (PHB) photoautotrophically during nitrogen-limited growth. The activity of polyhydroxyalkanoate (PHA) synthase in the cells correlates with PHB accumulation. PHA synthase sam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::85b0f09b39497b23a9074bbf008df3e6
https://doi.org/10.1021/bm034171i
https://doi.org/10.1021/bm034171i
Publikováno v:
Biomacromolecules. 4:504-509
Polyhydroxybutyrate (PHB) synthases (polymerases) catalyze the polymerization of the coenzyme A thioester of 3-hydroxybutyrate to PHB. The Ralstonia eutropha PHB synthase purified from recombinant E. coli cells exists in aqueous solution in both mono
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a79ffb6eff0b7c0d1ab0810d16a31a05
https://doi.org/10.1021/bm020099x
https://doi.org/10.1021/bm020099x
Publikováno v:
Macromolecules. 34:6889-6894
Two new 3-hydroxyalkanoates, 3-hydroxy-3-cyclopropylpropionate (3CyP3HP) and 3-hydroxy-4-chlorobutyrate (4C13HB), were prepared, and their coenzyme A (CoA) thioester derivatives were polymerized in aqueous solutions with the polymerase enzyme of a ba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7aec793dc85ad6994cb536a161cc9bb
https://doi.org/10.1021/ma010081z
https://doi.org/10.1021/ma010081z
Publikováno v:
Polymer. 41:1703-1709
Poly-3-hydroxyalkanoates (PHAs) containing pendant diol groups were prepared by the chemical modification of unsaturated PHAs using potassium permanganate (KMnO 4 ) at 20°C, without a severe reduction in molecular weight. The introduction of hydroxy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ca3ca3ba43de562fc2c2a5ab280576b
https://doi.org/10.1016/s0032-3861(99)00347-x
https://doi.org/10.1016/s0032-3861(99)00347-x
Publikováno v:
Journal of Biomedical Materials Research. 49:216-224
The present study investigated the in vitro mechanism and degradation rate of polyhydroxyoctanoate (PHO). Solution-cast PHO films were incubated in either water or isoosmotic phosphate-buffered saline (PBS) for periods ranging from 1 to 24 months. Ph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3ffd14fd117a313821821489ee61340
https://doi.org/10.1002/(sici)1097-4636(200002)49:2<216::aid-jbm9>3.0.co
https://doi.org/10.1002/(sici)1097-4636(200002)49:2<216::aid-jbm9>3.0.co
Publikováno v:
International Journal of Biological Macromolecules. 26:187-192
The in vitro degradation of isolated Pseudomonas oleovorans inclusion bodies containing either poly-3-hydroxynonanoate (PHN), or poly(-3-hydroxy-5-phenylvalerate) (PHPV), or a mixture of these two polymers was investigated. When incubated at 30 degre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ffad56eea8369bfc4c305c114a25041
https://doi.org/10.1016/s0141-8130(99)00081-1
https://doi.org/10.1016/s0141-8130(99)00081-1
Publikováno v:
Tissue Engineering. 5:369-386
The present study examined the biocompatibility and degradation properties of poly (beta-hydroxy octanoate) (PHO) as an impregnation substrate on arterial prostheses. PHO-impregnated polyester grafts sterilized by ethylene oxide (EO) or gamma (gamma)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bcf813eae2998fb401cc6867f162523d
https://doi.org/10.1089/ten.1999.5.369
https://doi.org/10.1089/ten.1999.5.369