Results 21 to 30 of about 21,738 (130)

Tracer Applications of Noble Gas Radionuclides in the Geosciences

, 2013
The noble gas radionuclides, including 81Kr (half-life = 229,000 yr), 85Kr (11 yr), and 39Ar (269 yr), possess nearly ideal chemical and physical properties for studies of earth and environmental processes.
Fischer, T. P., Kennedy, B. M., Lu, Z. -T., Purtschert, R., Schlosser, P., Severinghaus, J. P., Smethie Jr., W. M., Solomon, D. K., Sturchio, N. C., Tanhua, T., Yokochi, R.   +10 more
core   +3 more sources

Geological conditions and enrichment patterns of helium reservoir in Yancheng Formation, Huangqiao area, Subei Basin

Shiyou shiyan dizhi
The helium (He) content in the natural gas of the Neogene Yancheng Formation in the Huangqiao area of Subei Basin ranges from 1.05% to 1.40%, which is generally higher than the industrial grade, indicating a crust and mantle composite type of helium ...
Hongsheng YAO, Xingming CHEN, Tao ZHOU
doaj   +1 more source

Hydrogen targets for exotic-nuclei studies developed over the past 10 years

, 2011
Hydrogen-induced reactions provide essential information on nuclear structure, complementary to other experimental probes. For studies at both low and relativistic incident energy, developments in hydrogen targets have been performed over the past 10 ...
Obertelli, A., Uesaka, T.
core   +1 more source

Gasotransmitters in Modern Medicine: Promises and Challenges in the Use of Porous Crystalline Carriers

Advanced Healthcare Materials, EarlyView.
This perspective provides an overview of the growing interest in utilizing various gasotransmitters—small gaseous signaling molecules namely nitric oxide (NO), carbon monoxide (CO), and hydrogen sulfide (H2S)—for several therapeutic applications, with emphasis on the potential use of porous materials as carriers to provide safe and controlled local ...
Rosana V. Pinto, Moisés L. Pinto, Christian Serre   +2 more
wiley   +1 more source

Determination of selenium speciation in the muscle, kidney, and liver from different animals treated with different selenium supplements by HPLC‐ICP‐MS

Animal Research and One Health, EarlyView.
Dietary selenium (Se) deficiency is recognized as a global problem, and exogenous Se supplementation can effectively enrich its levels in animal bodies. Offal tissues are equally important as meat in Se enrichment. Varying properties among Se species require information beyond total Se concentration to fully evaluate health risk/benefits.
Xiaoqing Guo, Xueting Jia, Kai Zhang, Chaohua Tang, Xueyang Si, Bo He, Manus Carey, Lynda S. Perkins, Qingyu Zhao, Junmin Zhang   +9 more
wiley   +1 more source

An Intrinsic Tendency of Electronic Phase Separation into Two Superconducting States in La(2-x)Sr(x)CuO(4+delta)

, 2002
The effect of hydrostatic pressure up to 2 GPa on the superconductiong transitions in La{2-x}Sr{x}CuO{4+delta} is investigated.
Honma, T., Hor, P. -H., Li, Z. G., Lorenz, B.   +3 more
core   +1 more source

Mechanistic Insights Into the Methoxycarbonylation of Technical Grade Oleochemicals: Catalytical and Structural Analysis of Conjugated Fatty Acid Methyl Esters

European Journal of Lipid Science and Technology, EarlyView.
In this study, the inhibitory effect of PU‐FAME on methoxycarbonylation was analyzed. It could be shown that conjugated FAME products in particular are responsible for the observed inhibition. ABSTRACT This study examines the valorization of vegetable oils through Pd‐catalyzed methoxycarbonylation.
Hannes W. Wegener, Rene Reichert, Nils Brede, Alena Gierse, Maximilian L. Spiekermann, Dieter Vogt, Thomas Seidensticker   +6 more
wiley   +1 more source

The Star Formation Histories and Efficiencies of Two Giant HII Regions in M33 [PDF]

, 1995
$UBV$ photometry is used to re-identify the OB associations which power the two most luminous HII regions in M33, NGC 604 and NGC 595. There is a significant difference (2-3 Myr) in the ages of the most recent star formation episode in these two regions,
Matthews, B. C., Wilson, C. D.
core   +2 more sources

Gas Chromatography‐Mass Spectrometry Analysis, Genoprotective, and Antioxidant Potential of Curio radicans (L. f.) P.V. Heath

ChemistryOpen, EarlyView.
The ethyl acetate extract of Curio radicans is found to contain a higher proportion of bioactive compounds (55% vs 30% in the ethanolic extract) by gas chromatography‐mass spectrometry, and it exhibits stronger antioxidant activity in the DPPH assay (75% vs 65% inhibition) as well as clear genoprotective effects against H2O2‐induced DNA damage ...
Muhammad Naseer, Muhammad Adil, Sarir Ahmad, Mikhlid H. Almutairi, Abdulwahed Fahad Alrefaei, Sajid Ali, Fayaz Asad   +6 more
wiley   +1 more source

D/H ratios of the inner Solar System [PDF]

, 2017
The original hydrogen isotope (D/H) ratios of different planetary bodies may indicate where each body formed in the Solar System. However, geological and atmospheric processes can alter these ratios through time.
Hallis, Lydia
core   +1 more source