The Schoeller model for calculating rate of CO2 production (rCO2) from doubly labeled water (DLW) relies on the assumption that deuterium and oxygen-18 overestimate body water by 4 and 1%, respectively. However, the deuterium-to-oxygen-18 dilution space ratio (DSR) varies considerably, and it is unknown whether this is due to analytical or biological sources. From 161 published values in adult ...

Caves are laboratories for many disciplines that work in natural sciences including mineralogy, biology, hydrogeology, and archaeology. In this study, bi-monthly samplings were carried out from three sampling locations within around the Güvercinkaya Cave, a high-altitude cave located northwestern Turkey, to evaluate hydrochemical microbiological properties aquatic macroinvertebrates of stream. ...

Las aguas termales son recursos que permiten generar escenarios de desarrollo turístico y proyectos aprovechamiento e investigación, así como formular implementar normativas. Por esto, es necesario conocer la composición, los factores condicionantes sus relaciones en las fuentes municipios Bochalema Chinácota, para conocimiento, brindar herramientas mejora condiciones sanitarias manejo ambienta...

[PDF] [Full Text] [Abstract] , December , 2006; 21 (12): 3481-3487. Nephrol. Dial. Transplant. Ruth Glover, Jeffrey Barron and Andrew Bruce Lemmey Jamie H. Macdonald, Samuele M. Marcora, Mahdi Jibani, Gareth Roberts, Mick John Kumwenda, glomerular filtration rate in non-diabetic patients with chronic kidney disease Bioelectrical impedance can be used to predict muscle mass and hence improve e...

Excessive population growth and high water demands have significantly increased extractions from deep semi-deep wells in the arid regions of Iran. This has negatively affected quality different areas. The Water Quality Index (WQI) is a suitable tool to assess such impacts. study used WQI fuzzy hierarchical analysis process index (FAHP-WQI) investigate status 96 agricultural Yazd-Ardakan Plain, ...

Abstract Population, salinity, and increasing water consumption have caused high pressure on groundwater resources in Iran. The study reported here investigates the change of quality Zrebar lake basin relationship between it with land-use precipitation rate from 1992 to 2018. To achieve intended goal, chemical parameters wells around lake, bicarbonate (HCO 3− ), sulfate (SO 4 sodium absorption ...

Abstract In this study, we investigated the distribution and principal sources of macronutrients (N, P, K, S) in groundwater agro-pastorally dominated North Cameroon. Graphical methods multivariate statistics were used to understand impact land use regional geology on nutrient concentrations (K + , NO 3 ? SO 4 2? PO 3? ). Groundwater was acidic (median pH 6.8) more mineralized (EC range = 35–25...

Abstract Mining activities generate much wastes which degenerate into various geochemical components and affect the natural composition of surface water resources. They cause Acid Mine Drainage (AMDs) influence hydrochemical evolution hydrogeological systems. This study employed parameters to characterize evaluate effects mine discharges on irrigation in mining district Enyigba, SE Nigeria. Twe...

Abstract This paper investigates the suitability of groundwater for domestic and agricultural use in Rafsanjan plain, southwest part Daranjir–Saghand basin, Iran. Fifty-five samples were collected analyzed by six methods including water quality index (WQI), Schoeller diagram, irrigation (IWQ) parameters, Piper US salinity diagram Wilcox diagram. The spatial distribution maps chemical parameters...

I just read with great interest the well-written paper by Buchholz and Schoeller that discusses thermodynamics and weight-loss diets (1). However, the authors ignored the fact that the energy utilization of different diets depends on the biochemical pathways taken (2). For example, a low-carbohydrate diet dramatically increases gluconeogenesis relative to a high-carbohydrate diet. Obviously, gl...