Results 31 to 40 of about 5,408 (193)

The Rich Chemistry of Ionized Methanol With Sulfur Dioxide: Pathways to Prebiotic and Elusive Species in Earth's Atmosphere and Space

Chemistry – A European Journal, EarlyView.
The reaction between the methanol radical cation and sulfur dioxide is remarkably fast and forms several ionic and neutral products (HOSOH+, CH2OSO+, CH2OH+, CH2O, H2O, HSO2). The chemistry goes beyond simple proton or hydrogen transfer, revealing a close interaction between the two species, relevant to atmospheric and astrochemical environments where ...
Mauro Satta, Daniele Catone, Mattea Carmen Castrovilli, Antonella Cartoni   +3 more
wiley   +1 more source

Gibbs energy minimization thermodynamics for CO2 capture by aqueous amines: Conservation laws, concentration variables, and parameter consistency

The Canadian Journal of Chemical Engineering, EarlyView.
We clarify how Gibbs‐energy‐minimization models for aqueous‐amine CO2 capture fail when conservation constraints and concentration conventions are inconsistent. Exact standard‐state conversions and Reaktoro case studies show that P(CO2)‐loading fits can mask non‐unique parameters and wrong speciation, motivating complete water‐inclusive formulations ...
William R. Smith, William Rutherford, Allan M. M. Leal   +2 more
wiley   +1 more source

Review of aluminum solubility behavior in the Hanford 200 South West Area tanks targeted for retrieval

Environmental Progress &Sustainable Energy, EarlyView.
Abstract The behavior of aluminum‐bearing phases in tank wastes from the southwest quadrant of the Hanford Site's 200 West Area primarily determines solids accumulation, retrieval performance, and downstream processability. This review synthesizes historical tank characterization data, laboratory dissolution studies, and process‐relevant observations ...
Brett C. Simpson, Reid A. Peterson, Amy M. Westesen   +2 more
wiley   +1 more source

Warmer Climate Reduces the Carbon Storage, Stability and Saturation Levels in Forest Soils

Earth's Future
Forest soils store about one‐fifth of the global terrestrial biosphere carbon stock. However, our understanding of how soil geochemical, plant and microbial factors regulate forest soil organic carbon (SOC) storage, stability, and saturation levels ...
Yuntao Wu, Ziyang Peng, Xin Wang, Junsheng Huang, Lu Yang, Lingli Liu   +5 more
doaj   +1 more source

Enrichment features, ecological risks assessment and quantitative sources appointment of sediment heavy metals: An example of the urbanized Xizhi River catchment, South China

Environmental Chemistry and Ecotoxicology
Rapid industrialization is typically the primary cause for heavy metals [HMs: copper (Cu), zinc (Zn), cadmium (Cd), chromium (Cr), nickel (Ni), and lead (Pb)] contamination in urbanized river basins.
Chao Yan, Qirui Wu, Rui Li, Zuobing Liang, Zaizhi Yang, Aiping Zhu, Lei Gao   +6 more
doaj   +1 more source

Notable Impact of Paleotectonic Stress on Gold Mineralisation in the West Qinling Orogen

Geological Journal, EarlyView.
By applying fuzzy clustering and multiple inverse methods, we systematically processed the data of vein and fault slip in this ore deposit to reveal the transition of orogenic geological environment and paleotectonic stress field. Our research results show two different stress states: the northwest–southeast extensional stress field and the northeast ...
Hongyan Wang, Aibing Chen, Jian Yang, Yuan Zhang   +3 more
wiley   +1 more source

Molecular Palaeontology Prospects From Exceptionally Preserved Eocene Brackish‐Water Bivalve Batissa sitakaraensis (Venerida: Corbiculidae) From Hokkaido, Japan

Geological Journal, EarlyView.
This study reports the exceptional preservation of the Eocene freshwater bivalve Batissa sitakaraensis from Hokkaido, Japan. Multimodal analyses reveal that both the aragonitic shell mineralogy and the delicate organic periostracum retain their original structural and chemical characteristics after millions of years.
Taro Yoshimura, Kazuki Hirota, Hiroyuki Kagi, Takashi Matsubara, Takenori Sasaki   +4 more
wiley   +1 more source

Geoquímica de fósforo como indicadora da qualidade ambiental e dos processos estuarinos do Rio Jaguaribe - costa nordeste oriental brasileira Phosphorus geochemistry as a proxy of environmental estuarine processes at the Jaguaribe River, Northeastern Brazil

Química Nova, 2007
Phosphorus geochemistry as a proxy of environmental estuarine processes at the Jaguaribe River, Northeastern Brazil. Sedimentation of different phosphorus geochemical fractions can characterize the natural or anthropogenic processes dominant in the ...
Rozane Valente Marins, Francisco José de Paula Filho, Carlos Artur Sobreira Rocha   +2 more
doaj   +1 more source

A Comparison of the Geochemical and Stable Carbon Isotopic Characteristics of Extracts Obtained from Source Rocks Using Different Solvents

Energies, 2022
The choice of the solvent to use in the Soxhlet extraction process dramatically affects the extraction yield. In this work, ten hydrocarbon source rocks were extracted using different solvents, and the chemical compositions of their products were ...
Lantian Xing, Yan Liu, Zhongping Li
doaj   +1 more source

Seismic Sequence Stratigraphy Applied to Reservoir Recognition and Evolution on Marine Carbonatic Ramp—Macaé Group (Albian to Cenomanian) of Campos Basin

Geological Journal, EarlyView.
A classic oil producing interval of the Campos Basin—Macaé Group is revisited through seismic stratigraphic analysis, providing a stratigraphic framework, characteristic depositional and relative time positioning for several complex structural settings.
Renata Alvarenga, Juliano Kuchle, Francyne Amarante, Garibaldi Armelenti, Claiton Marlon dos Santos Scherer, Luiz Fernando De Ros, Bruno de Souza Silva, Igor Marzano, Márcia Karam, Candy Shirley Rosa Contreras, João Claudio Conceição, José Luis Drummond Alves, Luiz Landau   +12 more
wiley   +1 more source