Results 291 to 300 of about 17,196,143 (353)
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Novel Biodegradable Blend Matrices for Controlled Drug Release
Journal of Pharmaceutical Sciences, 2008Phosphorylcholine-functionalized poly-epsilon-caprolactone (PC-PCL) is a new biodegradable polymer with good biocompatibility. In this study modulation of the controlled release of Ibuprofen (IB), a model drug, from poly-epsilon-caprolactone (PCL) by direct blending with PC-PCL is investigated. The influence of several factors such as the content of PC-
Mei, Lin +5 more
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Controlled Drug Release from Biodegradable Bone Fillers
Advanced Materials Research, 2012Plaster of Pairs is a common used implanting material. However, its rapid degradation or drug releasing rate as a bone filler or drug carrier does not meet the requirement of clinic application. In this paper, plaster of Pairs bone fillers loaded with drug was prepared and their degradation and the drug release period were adjusted by coating their ...
Yong Li Zhang +6 more
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Control of Biodegradation in Bacteria
1991Abstract : Analysis of genes for the Beta-ketoadipate pathway revealed mechanisms underlying evolutionary divergence of controls governing biodegradation in bacteria. Transcriptional regulators that respond to muconate in Acinetobacter calcoaceticus and Pseudomonas putida diverged recently from a common ancestor.
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Journal of Controlled Release, 2018
&NA; The removal of recalcitrant organic pollutants in groundwater is a challenge being faced around the world. Achieving effective long‐term remediation of contaminated aquifers faces a variety of significant issues such as back diffusion, tailing, and ...
David O’Connor +6 more
semanticscholar +1 more source
&NA; The removal of recalcitrant organic pollutants in groundwater is a challenge being faced around the world. Achieving effective long‐term remediation of contaminated aquifers faces a variety of significant issues such as back diffusion, tailing, and ...
David O’Connor +6 more
semanticscholar +1 more source
[Plasmids controlling biodegradation of epsilon-caprolactam].
Mikrobiologiia, 1991Bacterial strains (190) capable of growth on epsilon-caprolactam as a sole source of carbon and nitrogen were isolated from epsilon-caprolactam industrial sewage. Most of the strains (90%) were found to contain plasmids. Some of the strains (36.8%) assigned provisionally to the genus Pseudomonas contained plasmids controlling epsilon-caprolactam ...
T Z, Esikova +2 more
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Macromolecular Rapid Communications, 2007
AbstractA novel preparation method for the core‐shell type biodegradable polyesters or biodegradable materials grafted with biodegradable polyesters was developed by alkaline surface treatment of biodegradable polyester films and subsequent enzymatic polymerization of aliphatic lactones, one example of which is shown in this study, i.e., the ...
Hideto Tsuji +3 more
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AbstractA novel preparation method for the core‐shell type biodegradable polyesters or biodegradable materials grafted with biodegradable polyesters was developed by alkaline surface treatment of biodegradable polyester films and subsequent enzymatic polymerization of aliphatic lactones, one example of which is shown in this study, i.e., the ...
Hideto Tsuji +3 more
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Effect of lignin as accelerator of the biodegradation process of poly(lactic acid)/lignin composites
, 2019The biodegradation time of poly(lactic acid) (PLA) in the environment can be long, according to environmental conditions. Therefore, the introduction of organic materials from renewable sources, such as lignin, is interesting since it can result in a ...
T. F. Silva +4 more
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International Journal of Biological Macromolecules, 2019
This work reports the synthesis of lipase enzyme catalyzed biodegradable hydrogel interpenetrating polymer network (hydrogel-IPN) of natural gum polysaccharide i.e.
Saruchi +3 more
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This work reports the synthesis of lipase enzyme catalyzed biodegradable hydrogel interpenetrating polymer network (hydrogel-IPN) of natural gum polysaccharide i.e.
Saruchi +3 more
semanticscholar +1 more source
Negative Control of Biodegradation in Pseudomonas.
1988Abstract : The objective of the research program was to characterize control mechanisms that exercised negative regulation on the expression of genes for aromatic catabolism in bacteria. The three sets of genes selected for investigation were ben, encoding enzymes that convert benzoate to catechol; cat, encoding enzymes tht convert catechol to citric ...
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Controlled release of herbicides from biodegradable matrices
1997Controlled release may be defined as a technique or method in which active chemicals are made available to a specified target at a desired rate for specified, long periods of time. In these systems a drug, pesticide or other bioactive agent is incorporated into a carrier which generally is a polymeric material.
N. Hasirci, H. Akin, A. Bilokcuoglu
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