Results 71 to 80 of about 47,686 (243)

Subterranean environments contribute to three‐quarters of classified ecosystem services

Biological Reviews, EarlyView.
ABSTRACT Beneath the Earth's surface lies a network of interconnected caves, voids, and systems of fissures forming in rocks of sedimentary, igneous, or metamorphic origin. Although largely inaccessible to humans, this hidden realm supports and regulates services critical to ecological health and human well‐being.
Stefano Mammola, David Brankovits, Tiziana Di Lorenzo, Isabel R. Amorim, Raluca Ioana Bancila, Adrià Bellvert, Enrico Bernard, Anna Blomberg, Paulo A.V. Borges, Martina Cappelletti, Rodrigo Lopes Ferreira, Rosalina Gabriel, Diana M. P. Galassi, Laura Garzoli, Vasilis Gerovasileiou, Grant C. Hose, Kathryn L. Korbel, Simone Martino, Ana Z Miller, Nataša Mori, Veronica Nanni, Giuseppe Nicolosi, Mattia Saccò, Troy S. Sakihara, Marconi Souza Silva, Anne E. Tamalavage, Maja Zagmajster, Efraín Chávez, Christian Griebler, Pedro Cardoso, Alejandro Martínez   +30 more
wiley   +1 more source

Compound-Specific δ^(34)S Analysis of Volatile Organics by Coupled GC/Multicollector-ICPMS [PDF]

, 2009
We have developed a highly sensitive and robust method for the analysis of δ^(34)S in individual organic compounds by coupled gas chromatography (GC) and multicollector inductively coupled plasma mass spectrometry (MC-ICPMS).
Adkins, Jess F., Amrani, Alon, Sessions, Alex L.   +2 more
core   +1 more source

Ion–Molecule Reaction Products as Probes and Precursors for Preparative Mass Spectrometry

Chemistry – A European Journal, EarlyView.
Ion–molecule reactions in the gas phase of mass spectrometers are important for preparative mass spectrometry because they (1) provide knowledge about the intrinsic reactivity of ions, helping to predict and control their reactivity at interfaces, and (2) generate new complex ions that can be mass selected and deposited on surfaces.
Markus Rohdenburg, Sebastian Kawa, Kay‐Antonio Behrend, Harald Knorke, Jonas Warneke   +4 more
wiley   +1 more source

Assessing connectivity between an overlying aquifer and a coal seam gas resource using methane isotopes, dissolved organic carbon and tritium [PDF]

, 2015
Coal seam gas (CSG) production can have an impact on groundwater quality and quantity in adjacent or overlying aquifers. To assess this impact we need to determine the background groundwater chemistry and to map geological pathways of hydraulic ...
A Green-Saxena, A Vengosh, BE Fontenot, BFJ Kelly, C Duvert, CD Keeling, CD Keeling, DDR Owen, DE Pataki, DL Valentine, DT Maher, E Dafny, ECP Kinnon, EG Nisbet, EJ Dlugokencky, G Antler, JA Hakala, JF Barker, JW Roy, K Knittel, MJ Whiticar, NG Phillips, P Quay, RB Jackson, RE Fisher, S Cuna, S Qin, SG Osborn, SK Hamilton, SK Hamilton, SL Papendick, TA Moore   +31 more
core   +1 more source

Mononuclear Molybdenum and Tungsten Phosphine Complexes for Catalytic Ammonia Synthesis: Development of the pentaPod Concept

ChemPhysChem, EarlyView.
The pentaPod (P5) concept unites tridentate and tripodal fragments to form molybdenum and tungsten catalytic Chatt‐type complexes for N2‐to‐NH3 reduction. Two pentaPod ligands, P5Me and P5Pln, are available with either two dimethylphosphine or phospholano (Pln) groups. The complexes enable the investigation of reactivity differences in N2 reduction and,
Anna‐Marlene Vogt, Tobias Adrian Engesser, Jan Krahmer, Felix Tuczek   +3 more
wiley   +1 more source

Models for Galactic cosmic-ray propagation [PDF]

, 2001
A new numerical model of particle propagation in the Galaxy has been developed, which allows the study of cosmic-ray and gamma-ray production and propagation in 2D or 3D, including a full reaction network.
A.W. Strong, Anders, Bergström, Binns, Connell, Connell, Connell, Davis, DuVernois, DuVernois, DuVernois, DuVernois, Engelmann, Hareyama, Hesse, I.V. Moskalenko, Lukasiak, Lukasiak, Lukasiak, Moskalenko, Moskalenko, Orito, Ptuskin, Seo, Simon, Simpson, Stephens, Stochaj, Strong, Strong, Strong, Strong, Strong, Thayer, Webber, Webber, Webber, Webber, Yanasak   +38 more
core   +3 more sources

Rational Design and Operando Characterization of Hierarchical α‐FeOOH‐FeP/Ni3S2 Catalysts for High‐Rate Alkaline Water Electrolysis

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A hierarchical FeOOH–FeP@Ni3S2 electrocatalyst is engineered on 3D Ni foam to enable efficient alkaline oxygen evolution. Operando spectroscopic techniques reveal dynamic surface reconstruction and proton‐coupled electron transfer (PCET) kinetics. The catalyst exhibits low overpotential and industrial‐level current operation, driving high‐performance ...
Maria S. Metaxa, Ioannis Vamvasakis, Gerasimos S. Armatas   +2 more
wiley   +1 more source

Metal‐Directed Self‐Assembly in a Beta‐Sheet Miniprotein Scaffold

European Journal of Inorganic Chemistry, EarlyView.
A rationally engineered miniprotein, V14C, which is based on the beta β‐sheet Foldon domain, self‐assembles via a metal‐binding site to form well‐defined oligomers in the presence of Zn2+, Hg2+, and Cd2+. This modular design expands the toolbox for creating custom metalloproteins, enabling studies of metal–protein interactions for biochemical functions
Chandan Muni Reddy, Marcos R. Conde González, Jürgen H. Gross, Franziska Thomas   +3 more
wiley   +1 more source

Mineralization, geochemistry, fluid inclusion and sulfur stable isotope studies in the carbonate hosted Baqoroq Cu-Zn-As deposit (NE Anarak)

Journal of Economic Geology, 2015
Introduction The Baqoroq Cu-Zn-As deposit is located northeast of the town ofAnarak in Isfahan province, in theeast central areaof Iran. Copper mineralization occursin upper cretaceous carbonate rocks.Studyof thegeologyof the Nakhlak area, the ...
Mohammad Ali Jazi, Mohammad Hassan Karimpour, Azadeh Malekzadeh Shafaroudi   +2 more
doaj  

Pt Sub‐Nanoclusters on ZIF‐Derived Ultrafine CdxZn1−xS Solid Solution: High‐Performance Photoreforming Lactic Acid to H2 and Value‐Added Chemicals

Electron, EarlyView.
This work presents ZIF‐derived ultrafine CdxZn1−xS decorated with Pt sub‐nanoclusters for efficient photocatalytic reforming of lactic acid. The catalyst achieves high H2 evolution (270.6 mmol h−1 g−1) and selective pyruvic acid production (73.1%), with mechanistic insights revealing Pt‐mediated control over reaction pathways.
Feng Liu, Yi Wang, Chunyang Zhang, Zhongyuan Li, Xiaojing Ma, Maochang Liu   +5 more
wiley   +1 more source