Results 71 to 80 of about 7,803,272 (294)

A Matrix-Matched Reference Material for Validating Petroleum Re-Os Measurements [PDF]

, 2017
This study presents two matrix-matched reference materials developed for petroleum Re-Os measurements. We present the Re and Os mass fractions and 187Re/188Os and 187Os/188Os values (ratio of the number of atoms of the isotopes) for repeatedly measured ...
David Selby, Junjie Liu, Liu, J., Selby, D.   +3 more
core   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

Advanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Re-Os Isotope Dating of Molybdenite from the Shapoling Mo Deposit, East Qinling and Its Implication for Identification of Late Jurassic Mo Mineralization

Yankuang ceshi, 2017
The Shapoling Mo deposit is located in the Xiong'er rock mass of the southern margin of the North China Craton. The deposit is hosted in a contact zone between granite and wallrocks of the Taihua Soupergroup, which is a recently found discovered vein ...
YUE Su-wei, DENG Xiao-hua, YAO Jun-ming, SUN Ya-li   +3 more
doaj   +1 more source

Epigenetic gold occurrence in a Paleoproterozoic meta-evaporitic sequence in the Rompas-Rajapalot Au system, Peräpohja belt, northern Finland [PDF]

Bulletin of the Geological Society of Finland, 2018
The Rompas-Rajapalot gold prospect is located in the northern part of the Paleoproterozoic Peräpohja belt. It covers an area of at least 10 x 10 km and comprises various styles of gold mineralization ranging from localized high-grade Au pockets in ...
Ranta, J.-P., Molnár, F., Hanski, E., Cook, N.   +3 more
doaj   +1 more source

Research progress and prospects for the Re-Os dating of petroleum systems

, 2022
The rhenium-osmium (Re-Os) radiogenic isotope system has been widely applied on the geochronology of the key timings of the petroleum systems. Here we focus on the application of Re-Os isochron age constructed with crude oil and low-maturity bitumen ...
Liu JunJie, Li Jie, Tian Hui, Xu JiFeng, null null   +4 more
core   +1 more source

Pulsed Oxidative–Reductive Electrolysis Over Dual Cu and Co Single‐Atom Sites for Urea Electrosynthesis

Advanced Materials, EarlyView.
Alternating oxidative–reductive pulses synchronize CO2‐derived *CO and NH3‐derived *NHx intermediates over dual Cu and Co single‐atom sites, enabling urea and ethyl urea formation with a total C─N Faradaic efficiency of 42 ± 4%. In situ spectroscopy and theoretical calculations elucidate complementary Cu and Co functions, while oxidative controls ...
Putri Ramadhany, Peiqi Qiu, Thành Trần‐Phú, Denny Gunawan, Bernt Johannessen, Rosalie K. Hocking, Yan Jiao, Rose Amal, Rahman Daiyan   +8 more
wiley   +1 more source

GEOPHYSICAL AND GEOCHEMICAL EVIDENCE FOR COLD UPPER MANTLE BENEATH THE EQUATORIAL ATLANTIC OCEAN

Brazilian Journal of Geophysics, 2008
This paper presents geophysical and geochemical evidence for the possible existence of cold, subducted lithosphere beneath the Saint Paul Fracture Zone of the Equatorial Atlantic Ocean.
Susanna Eleonora Sichel, Sonia Esperança, Akihisa Motoki, Marcia Maia, Mary F. Horan, Peter Szatmari, Eliane da Costa Alves, Sidney L.M. Mello   +7 more
doaj   +1 more source

Implication of in situ Sr Isotope of Scheelite for Tungsten Mineralization: A Case Study of the Nanyangtian Scheelite Deposit, Southeast Yunnan, China

Yankuang ceshi, 2020
BACKGROUND The Nanyangtian scheelite deposit is an important skarn scheelite deposit in Yunnan Province, which is located in Laojunshan W-Sn deposit area, Southeast Yunnan.
WANG Zhong-qiang, LI Chao, ZHANG Ding-cai, JIANG Xiao-jun, ZHOU Li-min, YAN Qing-gao   +5 more
doaj   +1 more source

Adaptive Supramolecular Interactions Govern Redox‐Active Molecules in Aqueous Redox Flow Batteries

Advanced Materials, EarlyView.
Adaptive supramolecular interactions overcome the solubility‐stability trade‐off in aqueous redox flow batteries. Hydrophobic anions disrupt intrinsic π–π stacking to enable high solubility, while redox‐state‐dependent spin pairing and cation coordination dynamically stabilize reactive intermediates during operation.
Vikram Singh, Seongyeon Kwon, Giu A. Silva Testa, Ariyeong Yun, Yohan Kim, Yunseop Choi, Dongwook Kim, Seongmo Ahn, Minyoung Shim, Jongcheol Seo, Evan Wenbo Zhao, Mu−Hyun Baik, Hye Ryung Byon   +12 more
wiley   +1 more source

Development ICP-MS isotope dilution preconcentration techniques for determination of platinum group elements in volcanic rocks [PDF]

, 1999
Understanding PGE geochemistry in low abundance (i.e. sub ppb level) geological samples has been hampered by the absence of an accurate, low blank, preconcentration technique. Ni- S fire assay, the traditional preconcentration method, has been critically
Woodland, Sarah Justine
core