Results 161 to 170 of about 2,462,374 (243)
A radioisotopic tracer study of carbon formation in ethanol-air diffusion flames
Combustion and Flame, 1970 Experimental results have been obtained which show that carbon formation in ethanol-air diffusion flames occurs preferentially from the nonhydroxylated carbon atom of the ethanol molecule. The ratio of the contribution to solid carbon of the nonhydroxylated carbon atom to that of the hydroxylated atom equals 2:1.
D.F. Lieb, L.H.S. Roblee
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Radioisotopic tracing of carbon monoxide conversion by anaerobic thermophilic prokaryotes
Microbiology, 2007 The rate of CO conversion by a pure culture of a thermophilic CO-oxidizing, H2-producing bacterium Carboxydocella sp. strain 1503 was determined by the radioisotopic method. The overall daily uptake of 14CO by the bacterium was estimated at 38–56 μmol CO per 1 ml of the culture.
Tatiana V. Slepova +4 more
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Radioisotope tracer studies of inorganic carbon and Ca in microbially derived CaCO3
Geochimica et Cosmochimica Acta, 1999 Abstract Microbial calcification significantly impacts the cycling and deposition of inorganic carbon. This research employs 45 Ca and 14 C techniques as radioisotopic tracers to examine the role of cellular cycling of Ca 2+ and inorganic carbon in CaCO 3 precipitation by the unicellular green alga Nannochloris atomus .
Kimberly K. Yates, Lisa L. Robbins
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Radioisotope-Based Protocol for Determination of Central Carbon Metabolism in T Cells
, 2020 T lymphocytes are the major components of the adaptive immune system. It's been known that T cells are able to engage a diverse range of metabolic programs to meet the metabolic demands during their life cycle from early development, activation to functional differentiation.
Xuyong Chen, John Sherman, Ruoning Wang
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Isotopenpraxis Isotopes in Environmental and Health Studies, 1983 Some examples of radioisotope application from the cooperation for many years between the VEB Elektrokohle Lichtenberg Berlin and the Academy of Sciences of the GDR are told, Radiotracer and autoradiographical methods have been very helpful for the distinction between several components of the carbon or silicon carbide materials in milling, mixing ...
K. Wagner +5 more
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RNA-Radioisotope Probing for Studying Carbon Metabolism in Soils
, 2014 This chapter discusses RNA-radioisotope probing (RNA-RIP) for studying carbon metabolism in soils. Identifying the microorganisms driving bio-geochemical processes and how these are influenced by the physicochemical environment is the key to understand how microbial systems such as soils work.
Anthony G. O’Donnell +2 more
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Marine Chemistry, 2001 We report here bioturbation and sediment accumulation rates determined from replicate sediment cores at four different sampling sites on the Palos Verdes shelf, Southern California, using bomb fallout and natural radionuclides (137Cs, 239,240Pu, 210Pb, 234Th, and 14C), along with supporting measurements of organic carbon (OC), porosity and granulometry.
Peter H. Santschi +5 more
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Single-walled carbon nanotube film-silicon heterojunction radioisotope betavoltaic microbatteries
Journal of Micromechanics and Microengineering, 2014 Ever since the appearance of nanomaterials and nanotechnologies, they have been used in almost every type of microbattery except for nuclear ones. Here we present a radioisotope betavoltaic (BV) microbattery based on a single-walled carbon nanotube (SWCNT) film that acts as a carrier separator.
Peng Liu, Yiyang Chang, Jinwen Zhang
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Analytical Biochemistry, 1988 Measurement of specific radioactivity by a high-performance liquid chromatograph with a synchronized accumulating radioisotope detector was conducted. Accuracy of measurement for an authentic sample containing 0.2 nCi of tryptophan labeled with carbon-14 exceeded 95%.
Shigeo Baba +2 more
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Isotope Production and Applications in the 21st Century, 2000 Wayne T. Stolle
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