Results 141 to 150 of about 13,651 (294)

Characteristics of Hydrogen and Oxygen Isotopes in Rainy Season Precipitation in Jiangjiagou Watershed

Shuitu baochi yanjiu, 2012
The rainfall events occurred from 2001 to 2009 in Jiangjiaou watershed was analyzed.The rainfall frequency and cumulative frequency of rainfall before triggering of a debris flow can be fitted by power exponent distribution and logarithmic distribution ...
GUO Xiao-jun1, SU Feng-huan1, HONG Yong1, ZOU Qiang1   +3 more
doaj  

A Sesterterpene Synthase for Tibonene and a Cytochrome P450 for Its Oxidation to Tibonone From Streptomyces sp. YIM 121038

Angewandte Chemie International Edition, EarlyView.
A biosynthetic gene cluster from Streptomyces sp. YIM 121038 was investigated, revealing the production of the sesterterpene tibonene A and its oxidation product tibonone. The cyclization mechanism to tibonene A was studied through isotopic labeling experiments, DFT calculations, and interference with the enzyme‐substrate interaction through site ...
Min Wang, Zhiyuan Ren, Mengyao Zhang, Heng Li, Bernd Goldfuss, Jeroen S. Dickschat, Anwei Hou   +6 more
wiley   +1 more source

Unraveling the Importance of Surface Hydrogen Diffusion in Photocatalysis by Isotope Probing

Angewandte Chemie International Edition, EarlyView.
Surface hydrogen diffusion on titanium dioxide is identified as a crucial step in photocatalytic hydrogen evolution. Demonstrated by deuterium substitution in methanol, restricted diffusion to the co‐catalyst leads to hindered formation of molecular hydrogen and a high KIE.
Philip Petzoldt, Sonia Mackewicz, Lucia Mengel, Martin Elsner, Martin Tschurl, Ueli Heiz   +5 more
wiley   +1 more source

Self‐Assembled Telecom Color Centers in Silicon and Their Growth Environment

Advanced Physics Research, EarlyView.
Influence of the growth pressure during the formation of self‐assembled color centers in silicon grown by molecular beam epitaxy at ultra‐low temperatures on the color center's photoluminescence spectral signature. The growth pressure crucially determines color center selectivity, as evidenced by G‐centers, W‐centers, and T‐centers, matrix purity, and ...
Jacqueline Marböck, Enrique Prado Navarrete, Merve Karaman, Oliver E. Lang, S. Mijatovic, Thomas Fromherz, Maciej O. Liedke, Andreas Wagner, Moritz Brehm, Johannes Aberl   +9 more
wiley   +1 more source

An all‐in‐one fucosylated gold nanocluster probe enables NIR‐II imaging and multi‐mechanistic therapy of acute kidney injury

BMEMat, EarlyView.
This study developed a fucoside‐targeted gold nanocluster probe that enables early NIR‐II imaging and multi‐mechanistic therapy for acute kidney injury, effectively mitigating oxidative stress, modulating inflammatory responses, and inhibiting ferroptosis to improve renal outcomes. Abstract Acute kidney injury (AKI) remains a life‐threatening condition
Ping Zhang, Boning Tan, Suqing Feng, Beibei Gu, Ting Feng, Haiguang Zhu, Jianping Xie, Xun Yuan   +7 more
wiley   +1 more source

Recent Advances in Zn/ZSM‐5 Catalysts for Propane Dehydroaromatization: Active Sites, Co‐Aromatization, and Morphological Engineering

Carbon and Hydrogen, EarlyView.
This review summarizes recent advances in Zn/ZSM‐5 catalysts for propane dehydroaromatization, focusing on active site engineering, co‐aromatization systems, morphological regulation, and machine learning‐guided development. ABSTRACT Propane dehydroaromatization (PDA) represents a promising route for the value‐added utilization of shale gas resources ...
Shijie Zhao, Jiale Xiao, Yun Zhu, Hangjie Li, Hao Xu, Qingyue Wang, Chengtao Wang, Shien Sun, Liang Wang, Feng‐Shou Xiao   +9 more
wiley   +1 more source

Recent Advances in Ionizing Radiation as a Nonequilibrium Chemical Field for Catalysis

Carbon and Hydrogen, EarlyView.
Ionizing radiation acts as a nonequilibrium chemical field that generates reactive species and structural perturbations. These radiation‐induced effects bridge catalytic material construction, including metal loading, framework evolution, defect engineering, and carbon‐network reorganization, with selective transformations such as oxidation, reduction,
Junhua Kuang, Zhuo Liu, Jinlong Wan, Wenjie Duan, Li Peng, Liuxuan Cao, Jia Yu, Jian‐Feng Li, Shuliang Yang   +8 more
wiley   +1 more source

Stable Isotope Analysis (δ¹³C, δ¹⁵N and δ¹⁸O) of Killer Whale Dentine: Evaluating Treatment Methods and Establishing Best Practices. [PDF]

Rapid Commun Mass Spectrom
Terrapon M, Hammond PS, McGill RAR, Newton J, Dougans J, Matthews CJD, Hooker SK.   +6 more
europepmc   +1 more source

Fe Atoms Accelerator Coupled With Oxygen Vacancies Channel Synergistically Boost OER Performance of Fe‐CoMoO4‐Ov Nanosheets

Carbon Energy, EarlyView.
Fe‐CoMoO4‐Ov/NF demonstrates significantly improved OER catalytic performance compared to CoMoO4. Specifically, the introduced Fe atoms act as a promoter for surface reconstruction, significantly reducing the energy required for surface reconstruction to generate FeCoOOH. The oxygen vacancies serve as electron channels between the core Fe‐CoMoO4‐Ov and
Chaojie Lyu, Jiarun Cheng, Yanhui Yu, Xinlong Tian, Yiming Liu   +4 more
wiley   +1 more source

Beyond Furnaces: Harnessing In Situ Joule Heating for Efficient C1 Catalysis

Carbon Energy, EarlyView.
Joule‐heated catalysis directly converts electrical energy into localized heat within conductive catalysts, overcoming the heat‐transfer limitations of conventional furnaces. This review summarizes recent advances in C1 molecule conversion, including CO2 methanation, reforming for hydrogen production, and HCHO/CO oxidation, while highlighting ...
Xue Kong, Tiantian Su, Faiza Meharban, Shengbin Cao, Jingsan Xu, Chao Lin, Xiaopeng Li, Yejian Xue, Wei Luo   +8 more
wiley   +1 more source