Results 61 to 70 of about 7,253,207 (381)

Manganese and iron reduction dominate organic carbon oxidation in surface sediments of the deep Ulleung Basin, East Sea [PDF]

Biogeosciences, 2017
Rates and pathways of benthic organic carbon (Corg) oxidation were investigated in surface sediments of the Ulleung Basin (UB) characterized by high Corg contents ( >  2.5 %, dry wt.) and very high contents of Mn oxides ( >  200 µmol cm−3) and Fe ...
J.-H. Hyun, S.-H. Kim, J.-S. Mok, H. Cho, T. Lee, V. Vandieken, B. Thamdrup   +6 more
doaj   +1 more source

Development of Interactive E-Module on Oxidation-Reduction Concept

JTK (Jurnal Tadris Kimiya), 2021
This research aims to develop an interactive e-module on redox concept. Research and Development (R&D) method was used in this study with a Plomp model. This model included three phases: preliminary, prototype or development, and assessment.
Rabiatul Adawiyah, Susilawati Susilawati, Lenny Anwar S   +2 more
doaj   +1 more source

Detailed Kinetic Mechanism for the Oxidation of Ammonia Including the Formation and Reduction of Nitrogen Oxides

Energy & Fuels, 2018
This work introduces a newly developed reaction mechanism for the oxidation of ammonia in freely propagating and burner-stabilized premixed flames as well as shock-tube, jet-stirred reactor, and plug-flow reactor experiments.
K. Shrestha, L. Seidel, T. Zeuch, F. Mauss   +3 more
semanticscholar   +1 more source

Making tau amyloid models in vitro: a crucial and underestimated challenge

FEBS Letters, EarlyView.
This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
wiley   +1 more source

Assessing the Effect of Humic Substances and Fe(III) as Potential Electron Acceptors for Anaerobic Methane Oxidation in a Marine Anoxic System

Microorganisms, 2020
Marine anaerobic methane oxidation (AOM) is generally assumed to be coupled to sulfate reduction, via a consortium of anaerobic methane-oxidizing archaea (ANME) and sulfate-reducing bacteria (SRB).
Sigrid van Grinsven, Jaap S. Sinninghe Damsté, Laura Villanueva   +2 more
doaj   +1 more source

Graphene produced by radiation-induced reduction of graphene oxide [PDF]

, 2010
Effect of irradiation on graphene oxide by sunlight, UV light and KrF excimer laser has been investigated in detail. Both sunlight and ultraviolet light reduce graphene oxide well after prolonged irradiation, but laser irradiation produces graphene with negligible oxygen functionalities within a short time. Laser irradiation is also useful for one-step
arxiv   +1 more source

Unraveling Mycobacterium tuberculosis acid resistance and pH homeostasis mechanisms

FEBS Letters, EarlyView.
Mycobacterium tuberculosis exhibits a remarkable resilience to acid stress. In this Review, we discuss some of the molecular mechanisms and metabolic pathways used by the tubercle bacilli to adapt and resist host‐mediated acid stress. Mycobacterium tuberculosis (Mtb) is a successful pathogen that has developed a variety of strategies to survive and ...
Janïs Laudouze, Stéphane Canaan, Alexandre Gouzy, Pierre Santucci   +3 more
wiley   +1 more source

Biological and Chemical Processes of Nitrate Reduction and Ferrous Oxidation Mediated by Shewanella oneidensis MR-1

Microorganisms
Iron, Earth’s most abundant redox-active metal, undergoes both abiotic and microbial redox reactions that regulate the formation, transformation, and dissolution of iron minerals.
Lingyu Hou, Xiangyu Bai, Zihe Sima, Jiani Zhang, Luyao Yan, Ding Li, Yongguang Jiang   +6 more
doaj   +1 more source

Visualizing the Cu and Cu2O Interface Transition in Nanoparticles with Environmental Scanning Transmission Electron Microscopy [PDF]

Journal of the American Chemical Society, 139, p 179, 2017, 2017
Understanding the oxidation and reduction mechanisms of catalytically active transition metal nanoparticles is important to improve their application in a variety of chemical processes. In nanocatalysis the nanoparticles can undergo oxidation or reduction in situ, and thus the redox species are not what are observed before and after reactions.
arxiv  

Anamolous reduction of magnetic coercivity of graphene oxide and reduced graphene oxide upon cooling [PDF]

, 2013
In this report we present the temperature evolution of magnetic coercivity of graphene oxide (GO) and reduced graphene oxide (RGO). We report an anamolous decrease in coercivity of GO and RGO with decreasing temperature. We could explain this anamolous behavior invoking the inherent presence of ripple in graphene.
arxiv   +1 more source