Results 41 to 50 of about 4,468 (156)

Reassessing the organic carbon budget in the Murchison meteorite through an extraction–recovery mass‐balance approach

Meteoritics &Planetary Science, EarlyView.
Abstract A substantial fraction of organic carbon in carbonaceous chondrites has long been described as “missing,” reflecting incomplete recovery and limited resolution of operationally defined organic components. Here, we present a quantitative reassessment of the carbon budget in the Murchison meteorite using an integrated extraction–recovery mass ...
Hina Dohi, Minako Hashiguchi, Koichi Mimura   +2 more
wiley   +1 more source

Sedimentology and Petrophysics of Turonian-Coniacian Rudist Rich-Reservoir Rocks, Offshore Tunisia

, 2019
International audienceThe Turonian-Coniacian rudist-bearing carbonates are characterized by their good quality as reservoir rocks. They produce oil and gas in several fields in eastern onshore and offshore of Tunisia.
Géraud, Yves, Grosheny, Danièle, Boughalmi, Senda, Ben Alaya, Sonia, Negra, Mohamed Hédi   +4 more
core   +1 more source

Nanoscale space weathering features in mature lunar soil revealed by TEM and APT

Meteoritics &Planetary Science, EarlyView.
Abstract Space weathering significantly alters the optical, chemical, and structural properties of lunar regolith at micro‐ and nanoscales; yet detailed nanoscale variability within individual soils remains underexplored. Here we apply transmission electron microscopy (TEM) and atom probe tomography to four mineral grains (olivine, ilmenite, and two ...
Jennika Greer, Alexander M. Kling, Luke Daly, Dieter Isheim, David N. Seidman, Michelle S. Thompson, Philipp R. Heck   +6 more
wiley   +1 more source

Comparative Evaluation of Single and Combined Adsorption and Peroxone Processes for Taste and Odour Control in Reservoir Water

Water and Environment Journal, EarlyView.
ABSTRACT Taste and odour compounds (T&O), particularly 2‐methylisoborneol (2‐MIB) and geosmin, pose persistent challenges in drinking water treatment, as conventional methods often achieve limited removal. This study provides a comparative evaluation of five treatment strategies: activated carbon (AC) adsorption, sulfonic acid‐modified activated carbon
Betul Aykut‐Senel, Nuray Ates, Sehnaz Sule Kaplan‐Bekaroglu, Cihan Ozgur   +3 more
wiley   +1 more source

Genesis and Accumulation Period of CO2 Gas Reservoir in Hailar Basin

, 2022
Gas reservoirs with high CO2 have been found in several wells in the Hailar Basin. In this paper, a composition analysis, stable carbon isotope analysis, and a rare gas helium isotope 3He/4He and argon isotope 40Ar/36Ar analysis were carried out.
Zhangyong Meng, Zhanli Ren, Kezhang Cheng, Wei Jin, Hua Tao, Junping Cui, Hao Liu   +6 more
core   +1 more source

Formation model and special significance of helium-rich coalbed methane reservoirs in Mu’ai Block, Junlian

Meitan kexue jishu
The Junlian Mu’ai core area of Sichuan province is the first successfully commercialized Coalbed Methane (CBM) field in southern China, which has leading significance in the development of CBM in southern China.
Zhaobiao YANG, Junyu GU, Xuehai FU, Wenguang TIAN, Caiqin BI, Yongsheng HAN, Yuhui LIANG, Baoxin ZHANG   +7 more
doaj   +1 more source

Cryogen‐Aided Chromatographic Purification of Millimole Quantities of Methane for Spectroscopic Clumped Isotope Analysis

Rapid Communications in Mass Spectrometry, Volume 40, Issue 18, 30 September 2026.
ABSTRACT Rationale Quantum cascade laser absorption spectroscopy (QCLAS) is a fast and reliable method for analyzing the bulk (𝛿13C‐CH4, 𝛿D‐CH4) and clumped isotopic (∆13CH3D and ∆12CH2D2) composition of methane. However, precise measurements of ∆12CH2D2 require 0.5 to 1.8 mmol of purified methane (equivalent to 15 to 40 mL at STP).
Nico Kueter, Jan G. C. Meissner, Naizhong Zhang, Léna Msonnereau, Lukas Emmenegger, Joachim Mohn, Stefano M. Bernasconi   +6 more
wiley   +1 more source

Characteristics of shale reservoir in new strata of Qiongzhusi Formation in southern Sichuan

, 2021
The lower Cambrian Qiongzhusi Formation in southern Sichuan is one of the important strata for marine shale gas exploration. In the early stage, the exploration of black shale in Qiongzhusi Formation has achieved certain results, but the thin thickness ...
ZHONG Wenjun, DONG Xiaoxia, WANG Tong, LUO Haijin, ZHOU Jing, XIANG Keman, XIONG Liang, GUO Weixing, ZHOU Hua   +8 more
core   +1 more source

Exsolution, Evolution, and Hysteresis of CO2 Nanobubbles in Water‐Saturated Sandstone

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Understanding CO2 nanobubble formation in water‐saturated sandstone is critical for understanding fluid behavior in CO2 storage systems. Here, CO2 exsolution from an aqueous phase in a sandstone was investigated using small‐angle neutron scattering at 50°C during cyclic depressurization from 12 to 0.7 MPa.
Amirsaman Rezaeyan, Gernot Rother, Zaid Jangda, Hannah P. Menke, Kamaljit Singh, Florian Doster, Andreas Busch   +6 more
wiley   +1 more source

Advances in geological research of coal-measure natural helium and hydrogen as strategic gas resources

Meitan xuebao
The evaluation and exploration of strategic natural helium and hydrogen resources are of significant national importance. Studies on the occurrence, distribution, genetic mechanisms, and enrichment patterns of helium and hydrogen in coal measures are ...
Shuxun SANG, Junjie HE, Sijie HAN, Shiqi LIU, Xiaozhi ZHOU, Fansheng HUANG, Sijian ZHENG, Yuliang GUO   +7 more
doaj   +1 more source