Results 71 to 80 of about 13,576 (317)

Geochemistry constrains global hydrology on Early Mars [PDF]

, 2019
Ancient hydrology is recorded by sedimentary rocks on Mars. The most voluminous sedimentary rocks that formed during Mars' Hesperian period are sulfate-rich rocks, explored by the $Opportunity$ rover from 2004-2012 and soon to be investigated by the $Curiosity$ rover at Gale crater.
arxiv   +1 more source

Pupylation‐Based Proximity Labeling Unravels a Comprehensive Protein and Phosphoprotein Interactome of the Arabidopsis TOR Complex

Advanced Science, EarlyView.
The target of rapamycin (TOR) complex is a central plant growth regulator. Here, the protein–protein interactions underlying its various functions are mapped by pupylation‐based proximity‐labeling in Arabidopsis, using TOR complex subunits LST8‐1 and RAPTOR1, alongside TOR inhibitor FK506‐binding protein, as baits.
Shuai Zheng, Leonard Blaschek, Delphine Pottier, Luuk Robin Hoegen Dijkhof, Beyza Özmen, Peng Ken Lim, Qiao Wen Tan, Marek Mutwil, Alexander Sebastian Hauser, Staffan Persson   +9 more
wiley   +1 more source

Discrimination of hot versus cold avalanche deposits: Implications for hazard assessment at Mount Meager, B.C. [PDF]

Natural Hazards and Earth System Sciences, 2003
The surficial deposits surrounding the Mount Meager volcanic complex include numerous avalanche deposits. These deposits share many attributes: (a) they are nearly monolithologic and comprise mainly intermediate volcanic rock clasts, (b) they lack ...
M. L. Stewart, J. K. Russell, C. J. Hickson   +2 more
doaj  

Tracking the evolution of magmas from heterogeneous mantle sources to eruption [PDF]

arXiv, 2020
This contribution reviews the effects of source heterogeneities, melt-rock reactions and intracrustal differentiation on magma chemistry across mid-ocean ridges, intraplate settings and subduction zones using experimental studies and natural data. We compare melting behaviors of pyroxenites and peridotites and their relative contributions to magmas as ...
arxiv  

Sulfur and REE zoning in apatite: The example of the Colli Albani magmatic system [PDF]

, 2018
We investigate the distribution of major and trace elements in apatite crystals hosted in granular alkaline rocks composed mainly of leucite and clinopyroxene, representative of the hypabyssal crystallization of a magma body in the Quaternary ultra-potassic Colli Albani Volcanic District (CAVD), which was emplaced into thick limestone units along the ...
arxiv   +1 more source

METTL14‐Induced M6A Methylation Increases G6pc Biosynthesis, Hepatic Glucose Production and Metabolic Disorders in Obesity

Advanced Science, EarlyView.
It is shown that obesity is associated with increases in hepatic METTL14 and m6A methylation of G6pc transcript. YTHDF1 and YTHDF3 bind to m6A‐marked G6pc mRNA to increase its synthesis. Hepatocyte‐specific deletion of Mettl14 decreases G6pc m6A methylation, G6pc biosynthesis, and G6pc‐mediated gluconeogenesis, alleviating glucose metabolic defects in ...
Qiantao Zheng, Xiao Zhong, Qianqian Kang, Zhiguo Zhang, Decheng Ren, Yong Liu, Liangyou Rui   +6 more
wiley   +1 more source

Activity Enhancement Study of Xinjiang Silica-Alumina Volcanic Rock Powder through Different Activation Processes

Applied Sciences
In response to the dilemma of the scarcity of mineral additions and the high cost of long-distance transport in Hotan, Xinjiang, China, this paper presented an activation process study on the feasibility of volcanic rock powders unique to this region as ...
Shuhong Yang, Yingjie Wu, Huaiyi Wang, Guiquan Yang, Xiangyi Ding, Zhaoxuan Xia   +5 more
doaj   +1 more source

Oxidation of volcanic rocks

The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists, 1957
The writer has considered that magma has been re-heated in the course of ascending vent. Comparing the chemical composition of plutonic rocks with that of volcanic rocks, both are nearly equal in the amout of SiO2 and total iron and FeO/Fe2O3 is larger in plutonic rocks than volcanic rocks.
openaire   +3 more sources

Understanding the Metal‐Center Mediated Adsorption and Redox Mechanisms in a FeMn(NbTa)2O6 Columbite Material for Anion Exchange Membrane Water Electrolyzers

Advanced Energy Materials, EarlyView.
FeMn(NbTa)2O6‐columbite is a sustainable and high‐performance bifunctional electrocatalyst for anion exchange membrane water electrolyzers, comparable to benchmark catalysts. In situ XAS and DFT analysis show Fe/Mn sites exhibit higher OER activity due to reduced overpotentials and favorable O→OOH energetics. The Nb/Ta sites facilitate charge transfer,
Patrick M. Bacirhonde, Devendra Shrestha, Kyoungin Kang, Esensil Man Hia, Nikhil Komalla, Nelson Y. Dzade, Merve Buldu‐Akturk, Michelle P. Browne, Milan Babu Poudel, Dong Jin Yoo, Eun‐Suk Jeong, Ahmed Yousef Mohamed, Byoung Gun Han, Deok‐Yong Cho, Matthew T. Curnan, Geun Ho Gu, Jeong Woo Han, Chan Hee Park   +17 more
wiley   +1 more source

Diagenetic Evolution of Syngenetic Volcanogenic Sediment and Their Influence on Sandstone Reservoir: A Case Study in the Southern Huizhou Sag, Pearl River Mouth Basin, Northern South China Sea

Journal of Marine Science and Engineering
The Paleogene sandstone reservoir of Huizhou Sag is an important target for deep exploration in the Pearl River Mouth Basin, South China Sea. Because of the intense volcanic activity, it had a significant impact on the development of reservoirs, making ...
Jiahao Chen, Hongtao Zhu, Guangrong Peng, Lin Ding, Zhiwei Zeng, Wei Wang, Wenfang Tao, Fengjuan Zhou   +7 more
doaj   +1 more source