نتایج جستجو برای: deuterium enriched water

تعداد نتایج: 615187  

1992
M. H. Miles

A critical issue in determining whether or not the anomalous effects that occur during D2O electrolysis are of nuclear origin is the measurement of nuclear products in amounts sufficient to explain the rate of excess enthalpy generation. Calorimetric evidence of excess power up to 27% was measured during the electrolysis of heavy water using palladium cathodes. Maximum excess power was 0.52 W (...

Journal: :Science 1999
M P Bernstein S A Sandford L J Allamandola J S Gillette S J Clemett R N Zare

Polycyclic aromatic hydrocarbons (PAHs) in water ice were exposed to ultraviolet (UV) radiation under astrophysical conditions, and the products were analyzed by infrared spectroscopy and mass spectrometry. Peripheral carbon atoms were oxidized, producing aromatic alcohols, ketones, and ethers, and reduced, producing partially hydrogenated aromatic hydrocarbons, molecules that account for the i...

2014
Ina Ehlers Tatiana R. Betson Walter Vetter Jürgen Schleucher

The persistent organic pollutant DDT (1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane) is still indispensable in the fight against malaria, although DDT and related compounds pose toxicological hazards. Technical DDT contains the dichloro congener DDD (1-chloro-4-[2,2-dichloro-1-(4-chlorophenyl)ethyl]benzene) as by-product, but DDD is also formed by reductive degradation of DDT in the environment...

Journal: :Processes 2023

The occurrence state of groundwater in a karst area has significant impact on the tunnel lining structure. is more during construction. This paper used numerical simulation to study grouting reinforcement range Liaoshan Tunnel. was based critical water rich height. Under Grade IV and V surrounding rock, points were 230 m 240 deep, respectively. vertical horizontal stress seepage flow arch crown...

Journal: :Journal of applied physiology 2008
Shaji K Chacko Agneta L Sunehag Susan Sharma Pieter J J Sauer Morey W Haymond

We report a new method to measure the fraction of glucose derived from gluconeogenesis using gas chromatography-mass spectrometry and positive chemical ionization. After ingestion of deuterium oxide by subjects, glucose derived from gluconeogenesis is labeled with deuterium. Our calculations of gluconeogenesis are based on measurements of the average enrichment of deuterium on carbon 1, 3, 4, 5...

Journal: :Journal of applied physiology 2000
R M Ortiz C E Wade

Changes in gravitational load have been shown to alter renal function, which could potentially affect water balance. Therefore, the present study was conducted to determine the effects of chronic centrifugation on water balance. Eight Sprague-Dawley rats were centrifuged (12 days at 2 G), and eight rats were used as a control group. Water balance over the course of the study was determined by q...

Journal: :Physical chemistry chemical physics : PCCP 2006
Yosef Scolnik Irina Portnaya Uri Cogan Saar Tal Rachel Haimovitz Mati Fridkin Avshalom C Elitzur David W Deamer Meir Shinitzky

Mirror-image asymmetric molecules, i.e., chiral isomers or enantiomers, are classically considered as chemically identical. Recent studies, however, have indicated that parity violation by the nuclear weak force induces a tiny energy difference between chiral isomers. Upon combination with a massive amplification process, expansion of this difference to a detectable macroscopic level may be ach...

Journal: :Tree physiology 2010
Luitgard Schwendenmann Diego Dierick Michael Köhler Dirk Hölscher

Reliable estimates of water use by trees and other woody plants are crucial for an improved understanding of plant physiology and for water resource management. Since the 1980s, the thermal dissipation probe (TDP) method has been widely applied in trees, proved to be fairly accurate but is challenging in remote areas. Also in the 1980s, the deuterium (D(2)O or deuterium oxide) tracing method wa...

Journal: :Journal - Water Pollution Control Federation 1971
J D Eye L Liu

References a, I., et a& “The Variation of Deuterium Content of Natural rs in tho Hydrologic Cycle. ’ Res. cys., 2, 177 (1964). G? M., “Production of Heavy *.’, McGraw Hill Book Co. Inc., Pork, N.Y. (1955). . L., “Special Uses for Water med from Sewage. Proc. 21st 1 Meeting, Soil Conservation Soe. ier. (1966). ., “The Use of Oxygen-18 and ium Concentrations in the WU&lance of Lakes.” Water Bc: R...

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