Results 191 to 200 of about 139,618 (290)

A dataset of the Plio-Pleistocene at IODP Site U1489: Benthic foraminifera stable carbon and oxygen isotopes, coarse fraction, and selected benthic foraminifera abundances. [PDF]

Data Brief, 2020
Dang H, Peng N, Jian Z.
europepmc   +1 more source

Diet of bird‐like troodontid dinosaurs: synthesis of a contentious clade

Biological Reviews, EarlyView.
ABSTRACT Troodontidae is a clade of small‐to medium‐sized maniraptoran theropods that mainly lived in Laurasia (modern Asia, North America and Europe) during the Jurassic and Cretaceous periods and are believed to have had a variety of diets. The uniqueness of troodontid teeth suggests that they diverged from the typical flesh‐based diet of non‐avian ...
Yui Chi Fan, Case Vincent Miller, Michael Pittman   +2 more
wiley   +1 more source

Anthropogenic Effects on Hydrogen and Oxygen Isotopes of River Water in Cities. [PDF]

Int J Environ Res Public Health, 2019
Li X, Weng B, Yan D, Qin T, Wang K, Bi W, Yu Z, Dorjsuren B.   +7 more
europepmc   +1 more source

Selective Synthesis of N,N‐Dimethylformamide From CO2 Hydrogenation Coupled With Dimethylamine Over a ZnZrOx Solid‐Solution Catalyst

Carbon and Hydrogen, EarlyView.
N‐formylation of dimethylamine though CO2 hydrogenation takes place at a ZnZrOx solid‐solution catalyst surface toward N,N‐dimethylformamide. By synergistic effect of Zn and Zr sites, the catalyst achieves 99% DMF selectivity at 14% DMA conversion at 280°C with at least 1000 h stability on steam.
Jinxin He, Huan Zhang, Junming Yang, Lin Zhang, Fangyun Su, Masheng Yang, Junqi Tian, Xiaoying Chen, Yutong Wang, Jieyun Zhang, Zelong Li   +10 more
wiley   +1 more source

Oxygen isotopes internal equilibrium in magmatic epidote-bearing granitoids

Anais da Academia Brasileira de Ciências, 2002
VALDEREZ P. FERREIRA, JOHN W. VALLEY, ALCIDES N. SIAL, MICHAEL J. SPICUZZA   +3 more
doaj   +1 more source

Computational and Machine‐Learning Studies of Ethylene Oligomerization

Carbon and Hydrogen, EarlyView.
This review focuses on recent advances in computational and machine‐learning studies of ethylene oligomerization, highlighting mainstream catalyst systems based on Co, Ta, Ti, Zr, and Hf, with particular emphasis on Fe‐ and Cr‐based catalysts and their controlling factors governing reactivity and LAO distribution.
Zhixin Qin, Zhihui Song, Heying Feng, Li Jin   +3 more
wiley   +1 more source

Oxophilicity‐Driven Potential Window Engineering Enables Scalable and Low‐Emission Paired Electrosynthesis on Asymmetric CuOx@Ag Platform

Carbon and Hydrogen, EarlyView.
An asymmetric CuOx@Ag electrocatalyst platform enables paired electrochemical valorization of glycerol and 4‐nitrophenol, while effectively decoupling both half‐reactions from OER and HER. Ag‐mediated surface engineering expands the potential window and boosts reaction selectivity, achieving > 90% Faradaic efficiencies at both electrodes.
Xulai Gong, Linjie Zhao, Yongde Long, Hongwu Chen, Jiaxin Bai, Lei Chao, Xinyou Han, Baoguang Mao, Xianwei Liu, Yuanqing Shen, Wei Liu, Bowen Liu, Husitu Lin, Yang Song, Chuangang Hu   +14 more
wiley   +1 more source

Blank experimental study on the determination of nitrogen and oxygen isotopes by chemical conversion method. [PDF]

RSC Adv, 2019
Zong Y, Hu J, Wang Y, Sun H, Li Y, Liu W.   +5 more
europepmc   +1 more source

A Critical Review on Catalytic Regeneration of Amine Solutions for Energy‐Efficient CO2 Capture

Carbon and Hydrogen, EarlyView.
This review summarizes recent progress in acid‐catalyzed regeneration of CO2‐rich amine solutions. It highlights catalyst performance, mechanisms, and data‐driven design, aiming to bridge fundamental research with engineering practice for energy‐efficient carbon capture.
Qiyue Zhao, Chuanlei Liu, Peicheng Li, Yousheng Zhou, Benxian Shen, Hui Sun   +5 more
wiley   +1 more source

Deciphering the Variability in Mg/Ca and Stable Oxygen Isotopes of Individual Foraminifera. [PDF]

Paleoceanogr Paleoclimatol, 2019
Groeneveld J, Ho SL, Mackensen A, Mohtadi M, Laepple T.   +4 more
europepmc   +1 more source