Results 101 to 110 of about 13,651 (294)

Hydrogen and oxygen isotopic analysis of Antarctic lake waters

, 2000
New data on the stable oxygen and hydrogen isotopic composition of freshwater lakes of Schirmacher oasis, east Antarctica are presented. Spatial variation of tritium, deuterium and oxygen-18 isotopes in lake waters has been interpreted in terms of their ...
Sinha, Rajiv, Navada, S.V., Chatterjee, A., Kumar, U., Mitra, A., Nair, A.R.   +5 more
core   +3 more sources

Black Silicon for Solar Fuels

Advanced Science, EarlyView.
Black silicon couples broadband light harvesting with high‐surface‐area catalytic interfaces, offering a versatile photoelectrode platform for solar‐fuel production. Reaction‐specific analysis highlights trade‐offs involving recombination, chemical instability, catalyst‐induced optical shielding, competing reactions, and mass transport.
Neul Ha, Kaiying Wang, Wooseok Yang
wiley   +1 more source

Trapping and desorption of hydrogen isotopes under irradiation of zirconium by deuterium atoms of thermal energies

, 2020
© 2016 Elsevier Ltd. The results on trapping and desorption of hydrogen isotopes under irradiation of zirconium by deuterium atoms of thermal energies are presented.
Evsin A., Tagirov L., Begrambekov L., Vakhitov I., Gumarov A., Luchkin A., Kaplevsky A.   +6 more
core  

Pleistocene paleoenvironmental evolution at continental middle latitude inferred from carbon and oxygen stable isotope analysis of ostracodes from the Guadix-Baza Basin (Granada, SE Spain) [PDF]

, 2006
A representative paleoenvironmental reconstruction of continental middle latitude from ca. 2my to the upper part of Middle Pleistocene (279±77ky) was obtained from the carbon and oxygen stable isotopes analyzed in ostracode shells (Cyprideis torosa ...
Torres Pérez-Hidalgo, Trinidad José
core  

Multiscale Regulation of Ru‐Based Catalysts for Upgrading Biomass‐Derived Levulinic Acid and Levulinates to γ‐Valerolactone: Mechanisms, Advances, and Challenges

Advanced Science, EarlyView.
This review summarizes recent advances in the mechanistic, thermodynamic, and kinetic studies of biomass‐derived levulinic acid/levulinates conversion to γ‐valerolactone, along with the corresponding multiscale regulation strategies of Ru‐based catalysts.
Xin Ni, Cailu Xiao, Gongbing Zhou, Jingzi Zhang   +3 more
wiley   +1 more source

Isotopes in pyrogenic carbon: a review [PDF]

, 2012
Pyrogenic carbon (PC; also known as biochar, charcoal, black carbon and soot) derived from natural and anthropogenic burning plays a major, but poorly quantified, role in the global carbon cycle.
Michael I. Bird, Bird, M.I., Ascough, Phillippa L., Philippa L. Ascough, Ascough, P.L., Bird, Michael I.   +5 more
core   +1 more source

Comparative Evaluation of Chelator‐Conjugated Peptides for Lead‐Labeled SSTR2‐Targeted Theranostics: Integrated Computational Modeling and Preclinical Validation

Advanced Science, EarlyView.
The study integrates density functional theory with radiochemical and biological validation to compare DOTA‐, PSC‐, and DOTAM‐based chelator‐conjugates for 203Pb/212Pb theranostic applications. Distinct differences in metal coordination, electrostatic properties, conformational flexibility, cellular uptake, biodistribution, and dosimetry are identified
Jeongyun Kim, Na Yeon Han, Ayman Muzammal, Jae Hun Ahn, Changkeun Im, Sujin Kim, Sairan Eom, Choong Mo Kang, Ku Kang, Yong Jin Lee, Kyo Chul Lee, Michael K. Schultz, Dongyoul Lee   +12 more
wiley   +1 more source

Overcoming the *H‐NOx Coupling Bottleneck via Palladium‐Enabled Relay Catalysis on CuCo2O4 Toward Ampere‐Level Nitrate‐to‐Ammonia

Advanced Science, EarlyView.
Pd‐doped hollow spiny CuCo2O4 microspheres deliver ampere‐level electrocatalytic nitrate to ammonia. Cu and Co sites undergo relay catalysis for sequential nitrate reduction, while Pd accelerates water dissociation to supply abundant active hydrogen (*H).
Yuhuan Cui, Yingying Xu, Jingyao Guo, Yao Liu, Yuxuan Li, Zixuan Feng, Yitong Zhou, Yongjun Gao, Zhili Wang   +8 more
wiley   +1 more source

Geological Features and C-H-O-S-Pb Isotopes at the Zhazixi Sb-W Deposit

Chemical Engineering Transactions, 2017
The Zhazixi Sb–W deposit in the Xuefeng arc metallogenic belt, South China, is one of the Sb deposits in Precambrian strata. The sources of the ore-forming fluid and the metallogenic material, as the bone of contention in geochemical field, are ...
Liangliang Jia, Tagen Dai, Chaozhuang Xi, Dexian Zhang   +3 more
doaj   +1 more source

Anchoring Pd Single Atoms on N‐Doped MOF‐Derived TiO2 for Photocatalytic Hydrogen Evolution With an Ultra‐High Rate up to 185.8 mmol g−1 h−1

Advanced Science, EarlyView.
N doping is adopted to introduce abundant binding sites within TiO2 matrix, which enables firm immobilization of isolated Pd single atoms. The as‐constructed PdN‐TiO2 single atom photocatalyst achieves greatly promoted solar‐driven hydrogen evolution performance.
Xingyan Yang, Guangri Jia, Wenhao Li, Mingzhu Xie, Yong Shuai, Zhaolong Wang   +5 more
wiley   +1 more source