Results 21 to 30 of about 7,321,210 (347)

Sequential Sampling in Biological Assay [PDF]

open access: yesNature, 1953
IN an investigation relating to the isolation and purification of chorionic gonadotrophin from pregnancy urine, the following problem has arisen : “Does fraction A contain at least the amount X of chorionic gonadotrophin?” It was necessary to answer this question in the shortest possible time and to use as little material of A as possible.
E, BUKOVICS, F X, WOHLZOGEN
openaire   +2 more sources

Carotenoids from Mangifera Pajang and Their Antioxidant Capacity

open access: yesMolecules, 2010
This study provides new data on the various carotenoids found in bambangan (Mangifera pajang Kosterm.) peel and pulp extracts, such as all-trans-α- and β-carotene, cis-β-carotene, 9-cis-β-carotene, and cryptoxanthin.
K. Nagendra Prasad   +3 more
doaj   +1 more source

Dual effect of changes in temperature and pH on stability of cefquinome in vitro [PDF]

open access: yesIraqi Journal of Veterinary Sciences, 2016
The current study includes the dual effect of changes in temperature and pH on stability of cefquinome in vitro. Cefquinome was exposed to different phosphate buffer solution with a pH of 6,7 or 8 and each one was exposed to different temperatures which ...
L.A. Kafi
doaj   +3 more sources

A Preliminary Study on Using Multi-Nozzle Polymer Deposition System to Fabricate Composite Alginate/Carbon Nanotube Tissue Scaffolds [PDF]

open access: yes, 2006
Three-dimensional composite alginate/single wall carbon nanotube (SWCNT) scaffolds encapsulated with endothelial cells were fabricated by a multi-nozzle biopolymer freeform deposition system.
Guceri, S.   +3 more
core   +1 more source

Metal Ions, Metal Chelators and Metal Chelating Assay as Antioxidant Method

open access: yesProcesses, 2022
Heavy metals are essential for a wide range of biological processes, including the growth and reproduction of cells, synthesis of biomolecules, many enzymatic reactions, and the body’s immunity, but their excessive intake is harmful.
I. Gulcin, S. Alwasel
semanticscholar   +1 more source

Antioxidant Capacity and Antimicrobial Activity of Commercial Samples of Guava Leaves (\u3cem\u3ePsidium guajava\u3c/em\u3e) [PDF]

open access: yes, 2020
Psidium guajava is a small tree native to South and Central America. Guava leaves have traditionally been used for treating different illnesses. These benefits can be attributed to phenolics and flavonoids produced by guava.
Alsaidi, Sahar   +11 more
core   +2 more sources

Biological Assay of Cephalosporin C [PDF]

open access: yesJournal of General Microbiology, 1962
SUMMARY: A method of assaying the antibiotic cephalosporin C in low concentration in culture fluids by using a strain of Vibrio cholerae is described. The formation of spheroplasts of the test organism in subinhibitory concentrations of the antibiotic and chemically related compounds is discussed.
J M, BOND   +2 more
openaire   +2 more sources

The Impact of Hyperthyroidism on Selected Serum Proteins and Metal Ions in the Population of Lahore and Its Surrounding Areas

open access: yesPakistan Journal of Analytical & Environmental Chemistry, 2019
Inorganic metal ions and the proteins play an essential role in living systems. Different hormones and cellular messengers regulate the hemostasis of organisms.
Aisha Munawar   +5 more
doaj   +1 more source

Giemsa versus acridine orange staining in the fish micronucleus assay and validation for use in water quality monitoring [PDF]

open access: yes, 2011
This study concerns a comparative analysis of the acridineorange and Giemsastaining procedures for the fish erythrocyte micronucleusassay. The goal was to optimize the assay in the context of field watermonitoring. Fish (Carassius carassius) were exposed
Gauthier, Laury   +5 more
core   +2 more sources

Arginyltransferase, Its Specificity, Putative Substrates, Bidirectional Promoter, and Splicing-derived Isoforms [PDF]

open access: yes, 2006
Substrates of the N-end rule pathway include proteins with destabilizing N-terminal residues. Three of them, Asp, Glu, and (oxidized) Cys, function through their conjugation to Arg, one of destabilizing N-terminal residues that are recognized directly by
Brower, Christopher S.   +7 more
core   +2 more sources

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