Results 201 to 210 of about 612,314 (336)

Room‐Temperature Gas‐Phase CO2‐to‐C3 Coupling by a 4f‐Aromatic Cluster

Angewandte Chemie, EarlyView.
We engineered a 4f metalla aromatic cluster, PrB2C2−, that enables efficient sequential C−C coupling with CO2 at room temperature, yielding a linear C3 backbone. This system provides a complete theoretical catalytic cycle and establishes a new design principle for lanthanide mediated CO2 activation.
Feng‐Xiang Zhang, Xiao‐Wang Li, Ning‐Zheng Li, Sheng‐Gui He, Yu‐Chen Zhang, Li‐Li Xing, Donald G. Truhlar, Jia‐Bi Ma   +7 more
wiley   +2 more sources

Authentication of Fennel, Star Anise, and Anise Essential Oils by Gas Chromatography (GC/MS) and Stable Isotope Ratio (GC/IRMS) Analyses. [PDF]

Plants (Basel)
Murphy BJ, Wilson TM, Ziebarth EA, Bowerbank CR, Carlson RE.   +4 more
europepmc   +1 more source

Solar‐Driven Ammonia Synthesis From Nitrate Reduction Paired With CO2 Capture for Sustainable Agriculture via a Robust CuPd Heterojunction

Angewandte Chemie, EarlyView.
Laser‐assisted synthesis of CuPd amorphous/crystalline heterojunction demonstrates >80% Faradaic efficiency for nitrate‐to‐ammonia electroreduction across wide potential windows. The integrated solar‐powered electrolyzer achieves 6% solar‐to‐ammonia energy efficiency at 0.4 sun, 6–20 mg h−1 CO2 capture rate, and stability exceeding 100 h.
Weihua Guo, Xiaofeng Huang, Yangbo Ma, Yun Song, Zihao Li, Qiang Zhang, Yinger Xin, Jianjun Su, Mingming He, Ruixuan Wang, Rui Xue, Xing Li, Shibo Xi, Jian Wang, Shenlong Zhao, Siwei Zhang, Ben Zhong Tang, Alex K. Y. Jen, Ruquan Ye   +18 more
wiley   +2 more sources

Carbon isotopic ratios of crude oils by stable isotope mass spectrometry.

Journal of the Japanese Association for Petroleum Technology, 1989
Shizuko OKADA, Machiko TEZUKA, Shigeyuki TANAKA   +2 more
openaire   +2 more sources

Authentication of European sea bass according to production method and geographical origin by light stable isotope ratio and rare earth elements analyses combined with chemometrics. [PDF]

Ital J Food Saf, 2019
Varrà MO, Ghidini S, Zanardi E, Badiani A, Ianieri A.   +4 more
europepmc   +1 more source

Convergent Valorization via Scalable C═N Bond Electrosynthesis Through Metal‐Dopant Interfacial Engineering in a Flow Electrolyzer

Angewandte Chemie, EarlyView.
This study establishes an innovative approach to synthesize organonitrogens featuring C═N bonds efficiently using non‐precious metal‐doped MoS2 in a flow electrolyzer. Fe dopant significantly enhances Faradaic efficiency and yield rate, achieving over 81% and 2630 mmol h−1 g−1 for formaldoxime production. This platform upcycles pollutants into valuable
Ruijie Yi, Jiu Chen, Xiaoyong Mo, Tian Zeng, Jingtao Zhou, Fulai Liu, Shu‐Chih Haw, Yong Chen, Ruosong Li, Edmund C. M. Tse   +9 more
wiley   +2 more sources

High-Density Balsamic Vinegar: Application of Stable Isotope Ratio Analysis to Determine Watering Down. [PDF]

J Agric Food Chem
Perini M, Pianezze S, Paolini M, Larcher R.   +3 more
europepmc   +1 more source

A Dual-Carbon-and-Nitrogen Stable Isotope Ratio Model Is Not Superior to a Single-Carbon Stable Isotope Ratio Model for Predicting Added Sugar Intake in Southwest Virginian Adults. [PDF]

J Nutr, 2015
Hedrick VE, Zoellner JM, Jahren AH, Woodford NA, Bostic JN, Davy BM.   +5 more
europepmc   +1 more source

Gas chromatography-stable isotope ratio mass spectrometry prior solid phase microextraction and gas chromatography-tandem mass spectrometry: development and optimization of analytical methods to analyse garlic (Allium sativum L.) volatile fraction. [PDF]

Heliyon
Pianezze S, Paolini M, D'Archivio AA, Perini M.   +3 more
europepmc   +1 more source

Advances in natural stable isotope ratio analysis of human hair to determine nutritional and metabolic status

Current opinion in clinical nutrition and metabolic care, 2010
K. Petzke, B. Fuller, C. Metges
semanticscholar   +1 more source