Results 31 to 40 of about 515,139 (357)

Biotite as a petrogenetic discriminator in the polymetamorphosed rocks: A case study from the Champaner supracrustal rocks, Western India

Geosystems and Geoenvironment
The mineral chemistry of Fe-Mg biotite has served as an aid to the petrogenesis of igneous rocks, especially for identifying the parent magma compositions. Though the interpretation of igneous and metamorphic processes utilizing biotite mineral chemistry
Parita K. Gorania, Gayatri N. Akolkar, Aditya U. Joshi, Manoj A. Limaye, Mahendra K. Singh   +4 more
doaj   +1 more source

Elucidating the crystal-chemistry of Jbel Rhassoul stevensite (Morocco) by advanced analytical techniques [PDF]

, 2008
The composition of Rhassoul clay is controversial regarding the nature of the puremineral clay fraction which is claimed to be stevensite rather than saponite.
A. Maazouz, B. Rhouta, Barrakad, Benammi, Briant, Brindley, Caillère, Dammour, Duringer, Eberhart, F. Maury, F. Senocq, Faust, Fleischer, Guven, H. Kaddami, Holtzapffel, J. Elbarqy, J.- F. Gerard, Jacobs, Jeannette, Jolivet, L. Daoudi, M. Amjoud, Mackenzie, Millot, Rautureau, Trauth, Wilson   +28 more
core   +3 more sources

Acidity of edge surface sites of montmorillonite and kaolinite [PDF]

, 2013
Peer ...
Cheng, Jun, Liu, Xiandong, Lu, Xiancai, Meijer, Evert Jan, Sprik, Michiel, Wang, Rucheng   +5 more
core   +1 more source

The origins and physical roots of life’s dual – metabolic and genetic – nature [PDF]

, 2017
This review paper aims at a better understanding of the origin and physical foundation of life’s dual – metabolic and genetic – nature. First, I give a concise ‘top-down’ survey of the origin of life, i.e., backwards in time from extant DNA/RNA/protein ...
De Tiège, Alexis
core   +2 more sources

Diabetes‐induced vascular calcification is associated with low pyrophosphate and its oral supplementation prevents calcification in diabetic mice

FEBS Open Bio, EarlyView.
Induction of diabetes in three different mouse strains uniformly resulted in an increase in TNAP activity and a reduction in pyrophosphate (PPi) in the circulation. Inhibition of TNAP restored plasma PPi. Diabetes‐induced calcification in the media layer of the aorta was detected only in the Abcc6−/− strain, which is predisposed to ectopic ...
Krisztina Fülöp, Eszter Kozák, Natália Tőkési, Lilian Kocsis, Anikó Kelemen, Zsuzsanna Geszti, Adriána Kutás, Mariann Harangi, Ágnes Diószegi, Zsolt Rapi, József Balla, Olivier Le Saux, András Váradi, Viola Pomozi   +13 more
wiley   +1 more source

Petrogenesis and implications of the Dupangling compound granite in southern Hunan Province, China: Constraints from mineralogical chemistry, zircon U-Pb age, geochemistry and Nd-Hf isotope

Dizhi lixue xuebao, 2022
In this paper, zircon SHRIMP U-Pb geochronology, petrology, mineral chemistry, petrogeochemistry, Sm-Nd and Lu-Hf isotopes were studied for the eastern part of the Dupangling pluton, which is located at the western section of Nanling at the junction of ...
CHEN Di, LUO Peng, ZENG Zhifang, LIANG Enyun, PENG Yunyi, JIA Pengyuan, XIONG Miao, ZOU Guangjun   +7 more
doaj   +1 more source

Calcium‐sensing receptor induces the apoptosis of chondrocytes in cooperation with phosphate transporter

FEBS Open Bio, EarlyView.
Excess Ca2+ ions activate the Calcium‐Sensing Receptor (CaSR), which subsequently drives the uptake of excess inorganic phosphate (Pi) via the Pi transporter (Pit−1) in chondrocytes. This mechanism causes a toxic increase in intracellular Pi concentration, ultimately leading to chondrocyte apoptosis and pathological mineralization. Excess extracellular
Sachie Nakatani, Hiroya Ueda, Ayumi Kawata, Yuki Sato, Kotomi Inomata, Hiroshi Mano, Masahiro Wada, Kenji Kobata   +7 more
wiley   +1 more source

The Chemical Composition of Garnet for Sedimentary Provenance Determination, North Coast of Rio de Janeiro State, Brazil [PDF]

Anuário do Instituto de Geociências, 2018
The chemical composition of garnet, together with the analysis of the heavy minerals and their textures, is an important tool for accurate sedimentary provenance studies. The coastal segment of Northern Rio de Janeiro State, limited by the deltas of the
Sarah Siqueira da Cruz Guimarães Sousa, Eliane Guedes, João Wagner Alencar Castro, Ciro Alexandre Ávila, Reiner Neumann   +4 more
doaj   +1 more source

Characterization of Red, Pink, Orange, and Purple Gem-Quality Spinel from Four Important Areas

Crystals, 2023
Spinel is a precious stone with a long history. In ancient societies spinel was considered to be an imitation of ruby. With the depletion of ruby mineral resources, gem—grade spinel has attracted more and more attention from consumers. In the last decade,
Qian Xu, Bo Xu, Yujie Gao, Siying Li
doaj   +1 more source

TNT biotransformation: when chemistry confronts mineralization

Applied Microbiology and Biotechnology, 2007
Our understanding of the genetics and biochemistry of microbial 2,4,6-trinitrotoluene (TNT) biotransformation has advanced significantly during the past 10 years, and biotreatment technologies have developed. In this review, we summarize this new knowledge. A number of enzyme classes involved in TNT biotransformation include the type I nitroreductases,
Smets, Barth F., Yin, Hong, Esteve Núñez, Abraham   +2 more
openaire   +3 more sources