Phosphate Residual Effect
Mostrando 13-23 de 23 artigos, teses e dissertações.
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13. Adaptation of metodo of suspension for determination of the bactericidal activity of deodorants the chloride base of benzalconio in 200 concentrations above of mg/L / Adaptação do metodo de suspensão para determinação da atividade bactericida de desinfetantes a base de cloreto de benzalconio em concentrações acima de 200 mg/L
Bactericidal disinfectants can be evaluated through several methods. In Brazil, the AOAC dilution method and the AOAC suspension method are considered as the official methods to determine bactericidal efficacy of disinfectants. Although the AOAC 960.09 suspension method has some advantages over the AOAC dilution method (Use dilution method AOAC 955.14 and 95
Publicado em: 2003
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14. Effect of phosphate on the multiplication of Saccharomyces cerevisiae in continuous cultivation / Efeito de fosfato sôbre a multiplicação de Saccharomyces cerevisiae em cultivo contínuo
The influence of phosphate in a continuous culture was studied using mini-fermentor on the Saccharomyces cerevisiae multiplication. Dry matter, substrate concentration, specific substrate comsumption, specific carbon dioxide release, specific oxygen uptake rates and respiration quotient , as well as phosphorous content of the cells were measured in dependenc
Publicado em: 1983
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15. Mucopolysaccharidosis type I subtypes. Presence of immunologically cross-reactive material and in vitro enhancement of the residual alpha-L-iduronidase activities.
The enzymatic and immunologic properties of the defective residual alpha-L-iduronidase activities were investigated in fibroblast extracts from the three subtypes of mucopolysaccharidosis type I, Hurler (MPS IH), Scheie (MPS IS), and Hurler-Scheie (MPS IH-S) diseases. Using 4-methylumbelliferyl-alpha-L-iduronide (4MU-alpha-Id), the activities in fibroblast e
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16. Factors Affecting Filamentous Growth of Sphaerotilus natans1
Filamentous growth in cultures of Sphaerotilus natans can be measured and compared with total growth by a standardized procedure of winding filaments around an inoculating needle. Filaments and residual growth are then separately washed on Millipore filters, dried, and weighed. This method has been used to study changes in the growth habit of S. natans elici
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17. Homocystinuria due to cystathionine synthase deficiency: the effect of pyridoxine
We investigated the effect of pyridoxine administration in three patients with homocystinuria due to cystathionine synthase deficiency. The drug decreased the plasma concentration and urinary excretion of methionine and homocystine and the urinary excretion of homolanthionine and the homocysteine-cysteine mixed disulfide. Urinary cystine rose somewhat. Oral
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18. Effect of Manual Brush Cleaning on Biomass and Community Structure of Microfouling Film Formed on Aluminum and Titanium Surfaces Exposed to Rapidly Flowing Seawater
Metals exposed to rapidly flowing seawater are fouled by microbes that increase heat transfer resistance. In this study, results of biochemical test methods quantitatively relating the biomass and community structure of the microfouling film on aluminum and titanium to heat transfer resistance across the metal surface during three cycles of free fouling and
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19. Temperature-sensitive glucosamine auxotroph of Saccharomyces cerevisiae.
Temperature-sensitive revertants were isolated from Saccharomyces cerevisiae D-glucosamine auxotrophs previously obtained in this laboratory (W. L. Whelan and C. E. Ballou, J. Bacteriol. 124:1545-1557, 1975). The auxotrophs lack the enzyme 2-amino-2-deoxy-D-glucose-6-phosphate ketol-isomerase (EC 5.3.1.19), and the revertants appear to be temperature sensiti
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20. Transformation by polyoma virus is drastically reduced by substitution of phenylalanine for tyrosine at residue 315 of middle-sized tumor antigen.
We used an oligonucleotide to introduce an A----T transversion at nucleotide position 1178 in polyoma virus DNA. The single effect of this mutation is to substitute phenylalanine for tyrosine at residue 315 of the middle-sized tumor (mT) protein (antigen). This site was previously identified as a major phosphate acceptor in the protein kinase reaction of imm
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21. HEMOLYSIS OF RABBIT ERYTHROCYTES BY PURIFIED STAPHYLOCOCCAL ALPHA-TOXIN II. : Effects of Inhibitors on the Hemolytic Sequence
Cooper, Louis Z. (New England Center Hospital, Boston, Mass.), Morton A. Madoff, and Louis Weinstein. Hemolysis of rabbit erythrocytes by purified staphylococcal alpha-toxin. II. Effect of inhibitors on the hemolytic sequence. J. Bacteriol. 87:136–144. 1964.—Study of the time course of hemolysis of rabbit erythrocytes by purified staphylococcal alpha-lys
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22. Genetic analyses of the mannitol permease of Escherichia coli: isolation and characterization of a transport-deficient mutant which retains phosphorylation activity.
Three positive selection procedures were developed for the isolation of plasmid-encoded mutants which were defective in the mannitol enzyme II (IIMtl) of the phosphotransferase system (mtlA mutants). The mutants were characterized with respect to the following properties: (i) fermentation, (ii) transport, (iii) phosphoenolpyruvate(PEP)-dependent phosphorylat
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23. Guanidine-unfolded state of ribonuclease A contains both fast- and slow-refolding species.
The kinetics of the refolding reaction of ribonuclease A from high concentrations of guanidine hydrochloride or urea are biphasic, and show two refolding reactions whose rates differ 450-fold at pH 5.8 and 25 degrees. Measurements of cytidine 2'-phosphate binding during refolding, after stopped-flow dilution of guanidine hydrochloride (Gdn.HCl) or urea, show