Results 141 to 150 of about 9,785 (280)

FRACTIONATION OF SULFUR ISOTOPES IN THE BISULFITE ADDITION REACTION [PDF]

, 1951
The equilibrium constants for the isotopic exchange of S32 and S34 have boon measured for the equilibrium reaction of bisulfite ion with eight different carbonyl compounds. This was accomplished by comparing the mass spectrometric measurements of the S32/
Sheppard, William Arthur
core  

Geochemical and Geological Investigation of Skarn‐Type Pb–Zn Mineralization in Hastanetepe (Balya‐Balıkesir, Türkiye): An Approach Based on Fluid Inclusions, Sulphur Isotopes and Geochemical Data

Geological Journal, EarlyView.
Integrated petrographic, mineralogical and geochemical data from the Hastanetepe Pb–Zn deposit (Balya, Türkiye) reveal multi‐stage hydrothermal alteration and a magmatic sulphur source. Fluid inclusion and sulphur isotope results indicate a complex fluid evolution responsible for skarn‐type Pb–Zn mineralization along limestone–dacite contacts ...
Esra Ünal‐Çakır
wiley   +1 more source

Snapshots of Coastal Ecology Using Multiproxy Analysis Reveals Insights Into the Preservation of Swamp and Marsh Environments Since the Late Pleistocene

Geochemistry, Geophysics, Geosystems
The southeastern United States Coastal Plain ecosystem contains baldcypress (Taxodium distichum) swamps and grass‐dominated marshes. These ecosystems also occurred on the exposed continental shelf during lower sea levels but are rarely preserved due to ...
Kendall Fontenot, Kristine L. DeLong, Brian A. Schubert, Sophie Warny, Davin J. Wallace, Carrie M. Miller, Erin Culver‐Miller, Michael J. Polito, Carl A. Reese, Kathryn Garretson, Kehui Xu, Grant L. Harley, Jeffrey Obelcz, Kelli L. Moran, Julian Traphagan, Douglas Jones, Alicia Caporaso   +16 more
doaj   +1 more source

Why aquatic scientists should use sulfur stable isotope ratios (ẟ34S) more often

Over the last few decades, measurements of light stable isotope ratios have been increasingly used to answer questions across physiology, biology, ecology, and archaeology.
Phillips, AA, James, WR, Nelson, J, Burke, PJ, Szpak, P, Raoult, V, Niella, Y, Skinner, C, Harrod, C, Tilcock, MB   +9 more
core   +1 more source

Blood Biomarkers of Helicobacter pylori‐Infected Chronic Gastritis in Active Versus Stable Phases: A Clinical Indicator Analysis Combined With Proteomic and Metabolomic Investigations

iMetaMed, EarlyView.
Combining clinical data with serum proteomics and metabolomics, the HGB–CAPZB–acetic acid model was developed as a potential diagnostic index to distinguish the active and stable stages of Helicobacter pylori‐infected chronic gastritis, and the related mechanism was explored through multi‐omics.
Tiantong Jiang, Zhen Ma, Yang Li, Shaoli Wang, Yanjiao Zhang, Lei Song, Xianyu Li, Zhen Liu   +7 more
wiley   +1 more source

A Personal Perspective on Metalloprotein Structure and the Future of Macromolecular X‐Ray Crystallography

Journal of the Chinese Chemical Society, EarlyView.
While X‐ray crystallography has been the primary method for determining the structures of metalloproteins, cryoEM has taken over this role, illustrated by [4Fe4S]‐cluster containing proteins deposited in the Protein Data Bank. What will be the role for X‐ray crystallography as cryoEM and machine learning methods dominate the initial structural analysis?
Douglas C. Rees
wiley   +1 more source

Bioinorganic Site‐Specific Conjugation of Multi‐Arm Linkers to Create Pharmaceuticals With Targeting and Effector Functions

Journal of the Chinese Chemical Society, EarlyView.
This Account showcases a modular, multi‐arm linker platform that decouples payload loading from antibody conjugation. By leveraging a computationally designed ACPGHA zinc‐binding motif, we demonstrate the construction of homogeneous antibody‐drug conjugates and theranostic antibody‐radionuclide conjugates with high payload loading. The multi‐arm linker
Cédric Grauffel, Tse Wen Chang, Carmay Lim   +2 more
wiley   +1 more source

Effect of ammonium concentration on methane oxidation and CO2 removal in an anaerobic biotrickling filter treating synthetic landfill gas and leachate

Journal of Chemical Technology &Biotechnology, EarlyView.
Abstract BACKGROUND Landfill gas (LFG) and leachate are commonly treated separately through energy‐intensive processes. This study evaluated the integration of both streams in an anaerobic biotrickling filter (BTF) to achieve simultaneous methane (CH4) and carbon dioxide (CO2) removal coupled with ammonium (NH4+) transformation, and how the microbial ...
Cecilia Lizeth Alvarez‐Guzmán, Karla María Muñoz‐Páez, Alejandro Vargas, Idania Valdez‐Vazquez   +3 more
wiley   +1 more source

Geographic distribution of feather δ34S in Europe

Ecosphere
Geographic distribution models of environmentally stable isotopes (the so‐called “isoscapes”) are widely employed in animal ecology, and wildlife forensics and conservation.
Vojtěch Brlík, Petr Procházka, Luana Bontempo, Federica Camin, Frédéric Jiguet, Gergely Osváth, Craig A. Stricker, Michael B. Wunder, Rebecca L. Powell   +8 more
doaj   +1 more source

Liebig Review: Essential and Beneficial Elements in the Regulation of Cadmium Uptake and Tolerance in Crop Plants

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Cadmium (Cd2+) contamination in agricultural soils has been reported to pose risks to crop productivity, food safety, and human health. This review synthesizes current knowledge on the mechanisms by which essential (S, Zn, Fe, Mg, K, Ca) and beneficial (Si, Se, rare earth elements) elements mitigate Cd2+ toxicity in plants.
Maria Manzoor, Karl Hermann Mühling
wiley   +1 more source