Results 81 to 90 of about 547,241 (288)

SOURCES OF QUATERNARY POTASSIC VOLCANIC ROCKS FROM WUDALIANCHI, CHINA: CONTROL BY TRANSTENSION AT THE LITHOSPHERE–ASTHENOSPHERE BOUNDARY LAYER

Геодинамика и тектонофизика, 2016
Introduction. Transtension is a system of stresses that tends to cause oblique extension, i.e. combined extension and strike slip. Syn-volcanic transtensional deformations of the lithosphere may provide two possible scenarios for control of magmatic ...
S. V. Rasskazov, I. S. Chuvashova, Yi-min Sun, Chen Yang, Zhenhua Xie, T. A. Yasnygina, E. V. Saranina, Zhenxing Fang   +7 more
doaj   +1 more source

Seasonally resolved growth of freshwater bivalves determined by oxygen and carbon isotope shell chemistry [PDF]

, 2010
By means of a monitoring experiment in two rivers in the Netherlands, we establish a relationship between seasonally resolved growth rates in unionid freshwater bivalves and their environment.
Dick Kroon, Kroon, Dick, Versteegh, E.A.A., Troelstra, S R, Ron J. G. Kaandorp, Vonhof, H B, Versteegh, Emma A. A., Simon R. Troelstra, Troelstra, Simon R., Kaandorp, R J G, Hubert B. Vonhof, Troelstra, S.R., Kroon, D., Vonhof, Hubert B., Vonhof, H.B., Kaandorp, Ron J. G., Kaandorp, R.J.G., Emma A. A. Versteegh, Kroon, D   +18 more
core   +2 more sources

Metal‐Ion Regulated Light‐Free Z→E Isomerization of Azobenzene Glycomacrocycle

Chemistry – A European Journal, EarlyView.
Metal ion‐catalyzed Z→E isomerization of photoswitchable azobenzene glycomacrocycle: A new azobenzene‐based glycomacrocycle is capable of forming a 1:1 complex with divalent metal ions in both E‐ and Z‐isomers. The complexes undergo light‐free Z→E isomerization in a timescale spanning from seconds to weeks.
Yang Zhou, Jinbiao Jiao, Mathieu Lordez, Jean‐Yves Salpin, Juan Xie   +4 more
wiley   +1 more source

Bismuth Chalcogenide‐Based Photocatalysts for Nitrogen Reduction: Recent Progress and Prospects

Chemistry – A European Journal, EarlyView.
Bismuth chalcogenides emerge as promising visible‐light photocatalysts for sustainable ammonia synthesis, driven by tunable electronic structures and strong N2 activation. Recent advances reveal how defects, doping and heterojunction design synergistically enhance charge separation and reactivity. Key challenges and future directions highlight pathways
Mukesh K. Verma, Muhammad D. Bala, Phindile B. Khoza, Tshephiso R. Papo, Mzamo L. Shozi   +4 more
wiley   +1 more source

Experimental methods in chemical engineering: Temperature‐programmed oxidation—TPO

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Temperature‐programmed oxidation (TPO) probes the oxidative capacity and redox properties of solid materials—catalysts, metal oxides, perovskites, and carbonaceous deposits. It identifies coke type, distribution, and reactivity. TPO instruments pass an oxidizing gas (diluted O2$$ {\mathrm{O}}_2 $$, air, or less commonly N2O$$ {\mathrm{N}}_2 ...
Gholamreza Roohollahi, Jildimara de Jesus Santana, Alexander R. P. Harrison, Sara Andreoli, Ewa Marek, Stuart Scott, Mohammad Latifi, Gregory S. Patience   +7 more
wiley   +1 more source

Ultraspectral UV polychromator for SRS-isotopic sensor

Journal of Physics: Conference Series, 2019
Abstract We have developed a spectral module for the selection of narrow characteristic spectral lines of isotopes in the ultraviolet Raman spectral channel. To allow resolving closely spaced isotope lines in the continuous input radiation spectrum, extremely high resolution λ / Δλ = 1000 is implemented.
A Zhevlakov, E Miharev, A Grishkanich, Y Chubchenko, L Ignateva, N Paklinov   +5 more
openaire   +1 more source

Polyoxometalates in Photocatalytic CO2 Reduction: Multielectron Redox Regulation Across Molecular and Hybrid Architectures

EcoEnergy, EarlyView.
This review focuses on multielectron redox regulation across molecular and hybrid architectures for photocatalytic CO2 reduction, covering intrinsic POM photocatalysts, photosensitizer‐assisted assemblies, POM–metal–organic complexes, and POM‐integrated semiconductors and MOF/COF heterostructures to link structural motifs with charge transport, product
Bonan Li, Xiaowen Ruan, Sai Kishore Ravi
wiley   +1 more source

Maxwell Lyons Sr. papers [DIGITAL CONTENT]

, 1917
This collection contains materials related to the military service of Maxwell J.
Lyons, Maxwell J., Sr.
core   +1 more source

Synergistic Optical Strategies for Enhanced Perovskite Photocatalytic Activity

EcoEnergy, EarlyView.
This review addresses bottlenecks of halide perovskites' photoactive components from an optics‐driven perspective and organizes recent advances into four interconnected design principles. This review provides practical design principles and outlines key directions toward efficient, selective, and stable perovskite photocatalysis for CO2 reduction ...
Jaemin Jeong, Myeongjin Seol, Sang Hyun Ahn, Soo Young Kim   +3 more
wiley   +1 more source

Sr-ISOTOPE RATIOS OF A SOIL PROFILE (BADLANDS) NEAR RADICOFANI (SOUTHERN TUSCANY)

EQA, 2010
The Sr/Ca ratios and Sr-isotope ratios of bulk samples and acetate extracts from a soil profile developed on Pliocene marine clays near Radicofani, in southern Tuscany, were determined.
Francesca Castorina, Mariachiara Galiano, Umberto Masi   +2 more
doaj   +1 more source