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871.
R. L. Orozco M. D. Redwood P. Yong I. Caldelari F. Sargent L. E. Macaskie 《Biotechnology letters》2010,32(12):1837-1845
Escherichia coli strains MC4100 (parent) and a mutant strain derived from this (IC007) were evaluated for their ability to produce H2 and organic acids (OAs) via fermentation. Following growth, each strain was coated with Pd(0) via bioreduction of Pd(II).
Dried, sintered Pd-biomaterials (‘Bio-Pd’) were tested as anodes in a proton exchange membrane (PEM) fuel cell for their ability
to generate electricity from H2. Both strains produced hydrogen and OAs but ‘palladised’ cells of strain IC007 (Bio-PdIC007) produced ~threefold more power as compared to Bio-PdMC4100 (56 and 18 mW respectively). The power output used, for comparison, commercial Pd(0) powder and Bio-Pd made from Desulfovibrio desulfuricans, was ~100 mW. The implications of these findings for an integrated energy generating process are discussed. 相似文献
872.
873.
D. Haferburg R. Hommel H.-P. Kleber S. Kluge G. Schuster H.-J. Zschiegner 《Engineering in Life Science》1987,7(4):353-356
A rhamnolipid released by Pseudomonas aeruginosa 196 Aa into the culture medium reduced the number of local lesions induced by tobacco mosaic virus on leaves of the hypersensitive host Nicotiana glutinosa L. by up to 90%. The content of potato virus X in the systemically infected host Nicotiana tabacum L. ‘Samsun’ is decreased in inoculated as well as in secondarily infected leaves by up to 50%. In a smaller degree red clover mottle virus is influenced in the systemic host Pisum sativumconvar.speciosum (Dierb.) Alef ‘Nadja’. 相似文献
874.
Several unit-length minicircles from the kinetoplast DNA of Leishmania tarentolae were cloned into pBR322 and into M13 phage vectors. The complete nucleotide sequences of three different partially homologous minicircles were obtained. The molecules contained a region of approx. 80% sequence homology extending for 160–270 bp and a region unique to each minicircle. A 14-mer was found to be conserved in all kinetoplast minicircle sequences reported to date. The frequency distributions of various minicircle sequence classes in L. tarentolae were obtained by quantitative gel electrophoresis and by examination of the “T ladder” patterns of minicircles randomly cloned into M13 at several sites. By these methods we could assign approx. 50% of the total minicircle DNA into a minimum of five sequence classes. A sequence-dependent polyacrylamide gel migration abnormality was observed with several minicircle fragments both cloned and uncloned. The abnormality was dependent on the presence of a portion of the conserved region of the minicircle. 相似文献
875.
M Feneant-Thibault N Moatti J Maccario A Corriat A Lemonnier 《Biochemical and biophysical research communications》1987,142(1):221-227
Proline uptake was studied in human skin fibroblasts by simultaneous running of kinetic and inhibition experiments on the same cell lines. Two systems for proline uptake were shown: a high-affinity system not inhibited by alpha-(methylamino)isobutyric acid and a low affinity system inhibited by this amino acid (i.e. system A). These results appear to be of interest, firstly because up till now, system A was considered preferable for proline uptake in human fibroblasts, and secondly because they illustrate the need for combined inhibition and kinetic studies of amino acid uptake, especially when the substrate concentration range used and the respective Km of the systems do not allow their detection by kinetic analysis alone. Furthermore, this high-affinity system may have major physiological implications. 相似文献
876.
Richard L. Hughson 《CMAJ》1980,122(10):1115-1119
877.
878.
C. N. Page 《Plant Systematics and Evolution》1980,135(1-2):71-79
This study surveys the micromorphological surface structure of the leaves of the conifer genusAgathis (Araucariaceae) from throughout the range of the genus (Malaysia to New Zealand and Fiji) as seen with the scanning electron microscope. These data confirm that the vegetative parts ofAgathis are taxonomically highly conservative, but suggest the Melanesian and New Zealand elements to be distinctive from those of the rest of the genus, and from one another. Conclusions are compared with those that have been derived from studies based on other characters. 相似文献
879.
M. C. Yoshida 《Human genetics》1980,55(2):223-226
Summary The high rate of spontaneous and mitomycin C-induced chromosome aberrations in Fanconi's anemia fibroblasts is fully corrected after euploid somatic cell hybridization with normal human fibroblasts. 相似文献
880.
M E Englert M J Landes J E Birnbaum A L Oronsky S S Kerwar 《Biochemical and biophysical research communications》1980,96(1):498-505
The spent medium of cultured inflamed synovial tissue contains a potent inhibitor of leukocyte elastase. This leukocyte elastase inhibitor has no effect on leukocyte cathepsin G and pancreatic elastase is only marginally affected. The inhibitor is a glycoprotein, stable to heat, acid and reductive alkylation. Pretreatment of the inhibitor with either trypsin or chymotrypsin results in its inactivation. 相似文献