نتایج جستجو برای: enrichments

تعداد نتایج: 1825  

Journal: :American journal of physiology. Endocrinology and metabolism 1997
Visvanathan Chandramouli Karin Ekberg William C Schumann Satish C Kalhan John Wahren Bernard R Landau

The use of2H2O in estimating gluconeogenesis' contribution to glucose production (%GNG) was examined during progressive fasting in three groups of healthy subjects. One group ( n = 3) ingested2H2O to a body water enrichment of ≈0.35% 5 h into the fast. %GNG was determined at 2-h intervals from the ratio of the enrichments of the hydrogens at C-5 and C-2 of blood glucose, assayed in hexamethylen...

2014
Jon Telling Alexandre M. Anesio Martyn Tranter Andrew G. Fountain Thomas Nylen Jon Hawkings Virendra B. Singh Preeti Kaur Michaela Musilova Jemma L. Wadham

The seasonal melting of ice entombed cryoconite holes on McMurdo Dry Valley glaciers provides oases for life in the harsh environmental conditions of the polar desert where surface air temperatures only occasionally exceed 0°C during the Austral summer. Here we follow temporal changes in cryoconite hole biogeochemistry on Canada Glacier from fully frozen conditions through the initial stages of...

Journal: :FEMS microbiology ecology 2015
Dimitry Y Sorokin Ben Abbas Mitchell Geleijnse Nikolai V Pimenov Marina V Sukhacheva Mark C M van Loosdrecht

Microbial methanogenesis at extreme conditions of saline alkaline soda lakes has, so far, been poorly investigated. Despite the obvious domination of sulfidogenesis as the therminal anaerobic process in the hypersaline soda lakes of Kulunda Steppe (Altai, southwestern Siberia), high concentrations of methane were detected in the anaerobic sediments. Potential activity measurements with differen...

Journal: :American journal of physiology. Endocrinology and metabolism 2016
Marlou L Dirks Benjamin T Wall Irene Fleur Kramer Antoine H Zorenc Joy P B Goessens Annemie P Gijsen Luc J C van Loon

The loss of muscle mass and strength that occurs with aging, termed sarcopenia, has been (at least partly) attributed to an impaired muscle protein synthetic response to food intake. Previously, we showed that neuromuscular electrical stimulation (NMES) can stimulate fasting muscle protein synthesis rates and prevent muscle atrophy during disuse. We hypothesized that NMES prior to protein inges...

Journal: :Journal of nutritional science and vitaminology 1989
M Okita A Watanabe T Tsuji

Effect of proportion of three branched-chain amino acids (leucine, valine, and isoleucine:BCAA) for nitrogen utilization was studied in vivo by an intragastric administration of 15N-L-leucine to control rats and liver-injured rats treated with carbon tetrachloride (CCl4-rats). Following the administration of isonitrogenous dose of three amino acid solutions [Standard (15N-L-leucine, L-valine, L...

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