Results 101 to 110 of about 1,440,713 (245)

Reactivity of aluminum sulfate and silica in molten alkalimetal sulfates in order to prepare mullite [PDF]

, 2004
With the aim of preparing mullite, reactions between aluminum sulfate and silica in appropriate proportions and molten sulfate media M2SO4 (M=Na and/or K) were performed at different temperatures.
Durand, Bernard, El Ouatib, Rachida, Er-Rakho, Lahcen, Guillemet-Fritsch, Sophie, Moussab, Redouane, Samdi, Azzeddine   +5 more
core   +1 more source

Kinetic study of the cobalt electrodeposition onto glassy carbon electrode from ammonium sulfate solutions

Química Nova, 2009
We carried out an electrochemical study of the cobalt electrodeposition onto glassy carbon electrode from an aqueous solution containing 10-2 M of CoSO4 + 1 M (NH4)2SO4 at natural pH 4.5. The potentiostatic study indicated a progressive 3D nucleation and
Clara Hilda Rios-Reyes, Madaí Granados-Neri, Luis Humberto Mendoza-Huizar   +2 more
doaj   +1 more source

Cis‐unsaturated sphingolipids support growth of sphingoid base‐deficient yeast but impair plasma membrane integrity

FEBS Open Bio, EarlyView.
Sphingoid base structures, the sphingolipid backbones, vary among species. We established yeast cells in which the native sphingoid base was replaced with plant‐type bases containing cis or trans double bonds. This is, to our knowledge, the first eukaryotic model mostly composed of sphingolipids containing cis‐unsaturated sphingoid base, providing a ...
Takashi Higuchi, Saki Sugihara, Yohei Ishibashi, Kono Yushi, Hazuki Yamauchi, Motohiro Tani   +5 more
wiley   +1 more source

Spatial variability of snow chemistry in western Dronning Maud Land, Antarctica [PDF]

, 1998
During the austral summer of 1993-94 a number of 1-2 m deep snow pits were sampled in connection with firn-coring in western Dronning Maud Land, Antarctica. The traverse went from 800 to about 3000 m a.s.l. upon the high-altitude plateau.
Gundestrup, Niels, Hansson, Margareta, Isaksson, Elisabeth, Karlen, WibjoRn, Mayewski, Paul A., Stenbrrg, Malin, Twickler, Mark S., Whitlow, Sallie I.   +7 more
core   +4 more sources

Phosphomimetic mutations near active sites of proteins in Thermus thermophilus suggest a widespread regulatory mechanism

FEBS Open Bio, EarlyView.
In Thermus thermophilus, more than half of the phosphorylation sites identified by proteomic analysis are located near the active site. All phosphomimetic mutants of phosphosites of six enzymes belonging to different families showed severely reduced activity compared with the wild‐type, particularly in the turnover number.
Anzu Nishiwaki, Hiroki Okanishi, Yoshikatsu Kanai, Ryoji Masui   +3 more
wiley   +1 more source

Sulfated Polyhydroxysteroid Glycosides from the Sea of Okhotsk Starfish Henricia leviuscula spiculifera and Potential Mechanisms for Their Observed Anti-Cancer Activity against Several Types of Human Cancer Cells

Marine Drugs
Three new monosulfated polyhydroxysteroid glycosides, spiculiferosides A (1), B (2), and C (3), along with new related unsulfated monoglycoside, spiculiferoside D (4), were isolated from an ethanolic extract of the starfish Henricia leviuscula ...
Alla A. Kicha, Dmitriy K. Tolkanov, Timofey V. Malyarenko, Olesya S. Malyarenko, Alexandra S. Kuzmich, Anatoly I. Kalinovsky, Roman S. Popov, Valentin A. Stonik, Natalia V. Ivanchina, Pavel S. Dmitrenok   +9 more
doaj   +1 more source

Short‐term actions of epigalocatechin‐3‐gallate in the liver: a mechanistic insight into hypoglycemic and potential toxic effects

FEBS Open Bio, EarlyView.
Epigallocatechin‐3‐gallate (EGCG) acutely inhibited gluconeogenesis and enhanced glycolysis, glycogenolysis, and fatty acid oxidation in perfused rat livers. Mechanistic assays revealed mitochondrial uncoupling, inhibition of pyruvate carboxylation and glucose‐6‐phosphatase, shift of NADH/NAD+ ratios toward oxidation, and loss of membrane integrity ...
Carla Indianara Bonetti, Bruna Lopes Correia, Francielle Cristina Nakamura Manicardi, Nairana Mithieli de Queiroz Eskuarek Melo, Vanesa de Oliveira Pateis, Jurandir Fernando Comar, Anacharis Babeto de Sá‐Nakanishi, Adelar Bracht, Lívia Bracht   +8 more
wiley   +1 more source

Effect of sulfate aerosol on tropospheric NOx and ozone budgets: Model simulations and TOPSE evidence [PDF]

, 2003
The distributions of NOx and O3 are analyzed during TOPSE (Tropospheric Ozone Production about the Spring Equinox). In this study these data are compared with the calculations of a global chemical/transport model (Model for OZone And Related chemical ...
Atlas, Elliot, Brasseur, Guy, Dibb, Jack E., Emmons, L K, Hess, Peter, Horowitz, Larry, Klonecki, Andrzej, Madronich, Sasha, Ridley, Brian, Stround, Craig, Talbot, R., Tie, Xuexi   +11 more
core   +1 more source

Cobalt electrodeposition onto highly oriented pyrolytic graphite (HOPG) electrode from ammonium sulfate solutions

Química Nova, 2010
It was carried out an electrochemical study of the cobalt electrodeposition onto HOPG electrode from an aqueous solution containing 10-2 M of CoSO4 + 1M (NH4)2SO4.
Luis Humberto Mendoza-Huizar, Clara Hilda Rios-Reyes, Margarita Rivera   +2 more
doaj   +1 more source

Interplay between RNA‐protein interactions and RNA structures in gene regulation

FEBS Open Bio, EarlyView.
Methodological advances in mapping transcriptome‐wide RNA‐protein interactions and RNA structures have started to uncover the potential of RNP conformations in gene regulation. Competing RNA–RNA, RNA‐protein and protein–protein interactions shape the compaction and function of RNPs throughout their lifetime and may provide novel therapeutic targets in ...
Jenni Rapakko, Mauro Scaravilli, Minna‐Liisa Änkö   +2 more
wiley   +1 more source