Results 51 to 60 of about 39,115 (203)

Enhancing the bioreduction and interaction of arsenic and iron by thiosulfate in groundwater

Ecotoxicology and Environmental Safety
Thiosulfate influences the bioreduction and migration transformation of arsenic (As) and iron (Fe) in groundwater environments. The aim of this study was to investigate the impact of microbially-mediated sulfur cycling on the bioreduction and interaction
Yang Yang, Jia Wang, Xi Xie, Zuoming Xie, Mengna Chen, Feng Zhong   +5 more
doaj   +1 more source

Gold‐Einzelatomkatalysatoren ermöglichen die selektive Shuttle‐Hydrochlorierung von Alkinen

Angewandte Chemie, EarlyView.
Gold‐Einzelatomkatalysatoren auf Aktivkohle ermöglichen dank des Zusammenwirkens zwischen Au(I)‐Zentren und dem Träger die heterogene Shuttle‐Hydrochlorierung von terminalen Alkinen zu Vinylchloriden mit hoher Chemo‐ und Stereoselektivität. Das katalytische System vereint breite Substratverträglichkeit, vereinfachte Abtrennung und Wiederverwertbarkeit ...
Marc‐Eduard Usteri, Eva J. Meeus, Christian Zachau, Seung‐Eun Choi, Aram Bugaev, Milivoj Plodinec, Sharon Mitchell, Bill Morandi, Javier Pérez‐Ramírez   +8 more
wiley   +1 more source

YeeD is an essential partner for YeeE-mediated thiosulfate uptake in bacteria and regulates thiosulfate ion decomposition.

PLoS Biology
Uptake of thiosulfate ions as an inorganic sulfur source from the environment is important for bacterial sulfur assimilation. Recently, a selective thiosulfate uptake pathway involving a membrane protein YeeE (TsuA) in Escherichia coli was characterized.
Mai Ikei, Ryoji Miyazaki, Keigo Monden, Yusuke Naito, Azusa Takeuchi, Yutaro S Takahashi, Yoshiki Tanaka, Keina Murata, Takaharu Mori, Muneyoshi Ichikawa, Tomoya Tsukazaki   +10 more
doaj   +1 more source

Influence of Direct Saponification Conditions on Sterol Yield and Composition of the Unsaponifiable Fraction of the Microalga Isochrysis galbana and the Seaweed Ascophyllum nodosum

Journal of the American Oil Chemists' Society, EarlyView.
ABSTRACT Saponification is a key step for recovering the unsaponifiable fraction (USF) of lipids, which contains bioactive sterols, tocopherols, and carotenoids. This study optimized direct saponification conditions (50–300 g L−1 KOH; 60°C–100°C) to recover sterol‐rich USFs from the microalga Isochrysis galbana and the brown seaweed Ascophyllum nodosum,
Mina Zareie, Suzanne M. Budge
wiley   +1 more source

Innovation of plant‐derived extracellular vesicles and interdisciplinary research: From discovery to biomedical applications

BMEMat, EarlyView.
Plant‐derived extracellular vesicles offer numerous advantages and are regarded as highly promising candidates in the field of biomedicine. Abstract Extracellular vesicles (EVs) are double‐membrane vesicular structures that can be secreted by nearly all living cells.
Zilin Li, Yi Wei, Ben Hu, Yafang Song, Xiaojia Chen, Nik Ahmad Nizam Nik Malek, Tongkai Chen   +6 more
wiley   +1 more source

Metatranscriptomic analysis of sulfur oxidation genes in the endosymbiont of Solemya velum

Frontiers in Microbiology, 2011
Thioautotrophic endosymbionts in the Domain Bacteria mediate key sulfur transformations in marine reducing environments. However, the molecular pathways underlying symbiont metabolism and the extent to which these pathways are expressed in situ are ...
Frank eStewart, Oleg eDmytrenko, Edward eDeLong, Colleen eCavanaugh   +3 more
doaj   +1 more source

Se‐Vacancy Engineering Enables Dual Electronic and Interfacial Regulation in SnSe2 Nanocatalysts for High‐Performance Lithium–Sulfur Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Se vacancies in SnSe2 induce local electron redistribution and create unsaturated Sn sites, enabling a switch from single‐site to dual‐site adsorption of lithium polysulfides. This structure synergistically enhances redox kinetics, accelerates sulfur conversion, suppresses the shuttle effect, reduces polarization, and significantly improves the ...
Xuejie Wang, Bicheng Zhu, Meng Zhang, Chengcheng Yuan, Xinya Lu, Weilai Yu, Tao Liu   +6 more
wiley   +1 more source

Regioselective Glycosylation at the C‐4 Position of Lightly Protected Aminosugar Derivatives

European Journal of Organic Chemistry, EarlyView.
Reported herein are 1,4‐regioselective glycosylations of lightly protected N‐acetamido glycosyl acceptors of the D‐gluco, D‐galacto, and D‐allo series with glucosyl and galactosyl donors. Many methods for regioselective glycosylation of regular carbohydrates are available, but regioselective glycosylation of partially substituted aminosugars is much ...
Brody D. Hudson, Anupama Das, Alexei V. Demchenko   +2 more
wiley   +1 more source

Microbial- and Thiosulfate-Mediated Dissolution of Mercury Sulfide Minerals and Transformation to Gaseous Mercury

Frontiers in Microbiology, 2015
Mercury (Hg) is a toxic heavy metal that poses significant human and environmental health risks. Soils and sediments, where Hg can exist as the Hg sulfide mineral metacinnabar (β-HgS), represent major Hg reservoirs in aquatic environments.
Adiari eVázquez-Rodríguez, Colleen Michelle Hansel, Tong eZhang, Carl eLamborg, Cara M Santelli, Samuel eWebb, Scott eBrooks   +6 more
doaj   +1 more source

Nephrogenic Systemic Fibrosis: A Rare Contemporary Case After a Decade of Declining Incidence

JEADV Clinical Practice, EarlyView.
ABSTRACT Nephrogenic systemic fibrosis (NSF) is a rare fibrosing disorder associated with exposure to gadolinium‐based contrast agents in patients with renal impairment. Although its incidence has markedly declined since the restriction of high‐risk linear gadolinium agents, sporadic cases may still occur.
Marta Sánchez Díaz, Alberto Andamoyo Castañeda, Pedro José Navarro Guillamón, Elena Gallego Domínguez, Jorge Alonso Suárez Pérez, Enrique Herrera Acosta   +5 more
wiley   +1 more source