Results 151 to 160 of about 10,099,064 (215)
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Crithidia factors in human urine
Biochemical Medicine, 1974Abstract 7,8-Dihydrobiopterin is the major component of urinary activity for Crithidia fasciculata together with trace amounts of probably 5,6,7,8-tetrahydrobiopterin. Epileptics controlled by anticonvulsants and patients with rheumatoid arthritis have significantly lower levels of urinary Crithidia factor.
R J, Leeming, J A, Blair
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Science of the Total Environment, 2018
Organic ultraviolet (UV) filters are emerging contaminants that may pose health risks to humans. We measured the concentrations of four commonly used organic UV filters (2-hydroxy-4-methoxybenzophenone (BP-3), 4-methylbenzylidene camphor (4-MBC ...
J. Ao +8 more
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Organic ultraviolet (UV) filters are emerging contaminants that may pose health risks to humans. We measured the concentrations of four commonly used organic UV filters (2-hydroxy-4-methoxybenzophenone (BP-3), 4-methylbenzylidene camphor (4-MBC ...
J. Ao +8 more
semanticscholar +1 more source
Parabens in human urine from several Asian countries, Greece, and the United States.
Chemosphere, 2018Parabens, esters of para-hydroxybenzoic acid, are commonly used as antimicrobial preservatives in cosmetics and personal care products. Although several studies report exposure of humans to parabens in Western countries, little is known about exposure of
Masato Honda, Morgan Robinson, K. Kannan
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N'-methylnicotinamide in human urine
Biological Mass Spectrometry, 1981The presence of a hitherto unrecognized pyridine base, N'-methylnicotinamide, in human urine has been established by electron impact and field ionization mass spectrometry. The quantitative analysis was performed by gas chromatography and by gas chromatography mass spectrometry on extracts of alkalified urine.
H, Holmen +3 more
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Struvite precipitation from anaerobic sludge supernatant and mixed fresh/stale human urine
Chemical Engineering Journal, 2018Phosphorus recovery attracts increasing attentions because phosphorus is a non-renewable and exhausted resource. This study for the first time remarkably improves the efficiency of phosphorus recovery in the form of struvite using the mixture of two ...
F. Zeng +5 more
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Alpha-glucosidases in human urine
Clinica Chimica Acta, 1967Abstract Two α-glucosidases from human urine have been separated by means of Sephadex G-200 gel filtration and further purified by DEAE-Sephadex chromatography. Both enzymes hydrolyse maltose and glycogen to free glucose. Indirect evidence has been obtained of the possible occurrence of further α-glucosidases in human urine.
C, Franzini, P A, Bonini
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Multiple ribonucleases of human urine
Biochemistry, 1981Four major urine ribonuclease (RNase) activities, designated bands A-D, were identified by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and activity staining. Bands A, B, and C have alkaline pH optima and display molecular weights of 31 000, 23 000, and 20 000, respectively, upon sodium dodecyl sulfate (NaDodSO4) gel electrophoresis and ...
R H, Sugiyama, A, Blank, C A, Dekker
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Conjugated Oxosteroids in Human Urine
Nature, 1964IT has long been known that oxosteroids are excreted in human urine in conjugated form chiefly as sulphates or glucuronidates. In order to test the hypothesis that the choice of either sulphate or glucuronidate in different individuals may be wholly or partially determined by genetical factors it was necessary to devise a simple and rapid method for ...
H L, KAY, F L, WARREN
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Pentachlorophenol Levels in Human Urine
Bulletin of Environmental Contamination and Toxicology, 1996Pentachlorophenol is perhaps one of the most persistent and widespread pollutants in existence today. The ubiquitous nature of this molecule and its toxicological properties have aroused the interest of numerous researchers in diverse areas of environmental chemistry, occupational health and safety, and environmental and occupational medicine ...
T S, Thompson, R G, Treble
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Putreanine excretion in human urine
Biochimica et Biophysica Acta (BBA) - General Subjects, 1970Abstract 1. 1. Putreanine, N -(4-aminobutyl)-3-aminopropionic acid, was detected in human urine. 2. 2. The concentration of urinary putreanine was determined using an automatic amino acid analyser. No significant differences or changes were observed between the sexes or during development and aging. 3. 3.
T, Nakajima, Y, Matsuoka, S, Akazawa
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