Results 71 to 80 of about 1,212,853 (207)

Characteristics and genesis of fillings in fracture-cavity space in first member of Permian Maokou Formation, Sichuan Basin: a case study of well A1

Shiyou shiyan dizhi
In recent years, natural gas discoveries have been continuously made in the first member of the Permian Maokou Formation in the Sichuan Basin, bringing attention to the genesis mechanism of marlstone reservoir space. Centimeter-scale fracture-cavity type
Xianwu MENG, Donghua YOU, Rong LI, Xiaobo SONG, Liyu ZHANG, Lan ZHU   +5 more
doaj   +1 more source

Trace elements and Pb isotope records in Dome C (East Antarctica) ice over the past 800,000 years

E3S Web of Conferences, 2013
Trace elements (V, Cr, Mn, Fe, Co, Cu, Zn, As, Rb, Sr, Mo, Cd, Sb, Ba, Tl, Pb, Bi, Th and U) and Pb isotopic compositions from the EPICA (European Project for Ice Coring in Antarctica) Dome C ice core have been determined using inductively coupled plasma
Hong S., Han C. H., Hwang H. J., Soyol-Erdene T-O., Kang J. H., Hur S. D., Burn-Nunes L. J., Gabrielli P., Barbante C., Boutron C. F.   +9 more
doaj   +1 more source

CR ISOTOPES AS A VALUABLE TRACER OF CR(VI) REDUCTION IN POLLUTED (GROUND)WATERS

Proceedings of the 44th International Academic Conference, Vienna, 2018
Chromium stable isotopes are of interest in many geochemical studies as a tool to identify Cr(VI) reduction in groundwater aquifers. At four industrial sites in the Czech Republic, we evaluated the extent of spontaneous removal of toxic Cr(VI) contaminated by Cr-plating baths.
openaire   +2 more sources

Method validation and geochemical modelling of chromium speciation in natural waters

Scientific Reports
The study focuses on validating reference methods such as ICP-OES and ICP-MS for detecting ultra-trace levels of chromium in groundwater, where concentrations are typically very low.
Piotr Rusiniak, Katarzyna Wątor, Ewa Kmiecik, Vesna Ristić Vakanjac   +3 more
doaj   +1 more source

Determination Uranium and its Isotopes in Biological Samples of Smokers

مجلة بغداد للعلوم
This study was conducted in the Najaf Governorate- Iraq, to analyze biological samples from smokers and non-smokers. The samples, including blood serum, urine, hair, and nails, were used as biomarkers to determine uranium concentrations (UC) and ...
Abdulhussein A. Alkufi, Mohanad H. Oleiwi, Ali Abid Abojassim, Noor Ulhuda G. Mohammed, Ali Saeed Jassim , Michele Guida   +5 more
doaj   +1 more source

Redox controls on Cr isotopes in natural waters

, 2016
Shifts in Cr isotope fractionations due to microbial activity provide valuable insights into the mechanisms of its cycling, and can be used to quantify biogeochemically mediated redox processes in the environment. In my thesis, microbial Cr isotope fractionations were determined, with a broad range of experimental variables, including species, electron
openaire   +1 more source

Cr Speciation & Isotope Composition in Seawater [PDF]

Goldschmidt Abstracts, 2020
Davidson Ashley, Francois Roger, Sean A Crowe   +2 more
openaire   +1 more source

Preparing Al2O3/TiO2 nano-multilayers on the surface of FeAl/Al2O3 coating as tritium permeation barrier

Nuclear Fusion
Preparing tritium permeation barrier (TPB) coating on the surface of structural materials can effectively alleviate tritium permeation in fusion reactor system.
Enkai Guo, Yifu He, Fen Zhong, Bowen Fu, Kun Wang, Guangxu Cai, Changzhong Jiang, Feng Ren   +7 more
doaj   +1 more source

Unraveling the Cr Isotopes of Ryugu: An Accurate Aqueous Alteration Age and the Least Thermally Processed Solar System Material

The Astrophysical Journal
The analysis of samples returned from the C-type asteroid Ryugu has drastically advanced our knowledge of the evolution of early solar system materials.
Ryoji Tanaka, Dilan M. Ratnayake, Tsutomu Ota, Noah Miklusicak, Tak Kunihiro, Christian Potiszil, Chie Sakaguchi, Katsura Kobayashi, Hiroshi Kitagawa, Masahiro Yamanaka, Masanao Abe, Akiko Miyazaki, Aiko Nakato, Satoru Nakazawa, Masahiro Nishimura, Tatsuaki Okada, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Yuichi Tsuda, Tomohiro Usui, Sei-ichiro Watanabe, Toru Yada, Kasumi Yogata, Makoto Yoshikawa, Eizo Nakamura   +25 more
doaj   +1 more source

Method for determination of 35 elements content in various samples with application of microwave digestion and inductively coupled plasma with mass spectrometry (ICP-MS)

Journal of Agriculture and Plant Sciences, 2016
Inductively coupled plasma with mass spectrometry (ICP-MS) and microwave digestion system were used as working techniques for determining the content of 35 elements (Ag, Al, As, B, Ba, Be, Bi, Ca, Cd, Co, Cr, Cs, Cu, Fe, Ga, Ge, Hg, K, Li, Mg, Mn, Mo, Na,
Biljana Balabanova, Blazo Boev, Sasa Mitrev, Violeta Ivanova-Petropulos   +3 more
doaj