Results 81 to 90 of about 58,988 (308)

Numerical Modeling of Polymer Electrolyte Fuel Cell Catalyst Layer with Different Carbon Supports

open access: yesInternational Journal of Electrochemical Science, 2018
The Monte Carlo simulation method is used to carry out numerical modelling of the polymer electrolyte membrane fuel cell (PEMFC) catalyst layer with a random catalyst particles distribution in a polymer matrix.
I.E. Baranov   +5 more
doaj   +1 more source

Mass spectrometry based identification of AMP‐O‐Tris generated by Thermococcus onnurineus Cas10

open access: yesFEBS Open Bio, EarlyView.
Isolated Thermococcus onnurineus Cas10 generates the noncanonical ATP‐derived product AMP‐O‐Tris while in Tris‐containing buffer as identified via mass spectrometry, revealing relaxed nucleophile selectivity under isolated conditions. These findings suggest that multiprotein Csm complex assembly restricts Cas10 reactivity toward canonical cyclic ...
Su‐Jin Lee   +6 more
wiley   +1 more source

Preparação e caracterização de catalisadores de Ni suportado em espinélio MgAl2O4 utilizados na reação de decomposição do metano para obtenção de hidrogênio e nanotubos de carbono [PDF]

open access: yes, 2011
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2011Este trabalho descreve a síntese e caracterização de catalisadores compostos por uma fase ativa ...
Nuernberg, Giselle de Boit
core  

Recent progress in the design of dry reforming catalysts supported on low-dimensional materials

open access: yesJournal of CO2 Utilization
Dry reforming of methane (DRM) is a technique used to produce synthesis gas via a reaction with carbon dioxide. The process requires a catalyst due to the high activation energy.
Joshua O. Ighalo, Placidus B. Amama
doaj   +1 more source

Zirconium Dioxide as a Catalyst and Catalyst Support.

open access: yesJournal of The Japan Petroleum Institute, 1993
酸化ジルコニウムの触媒および触媒担体としての応用の近況を概括した。まず, 酸化ジルコニウムの構造および表面性質, 特に酸塩基両機能性について記述し, ついで単体としての触媒作用の特徴をブテンの異性化反応, アルコールの脱水反応, ジエンの水素化反応, カルボン酸の水素化反応, COの水素化反応について述べ, さらに担体上への酸化ジルコニウムの分散, 添加物による高機能化, ならびに担体としての応用例として担持クロム酸化物および担持銅触媒を紹介した。
openaire   +2 more sources

Acute caffeine treatment protects the developing retina from ischemia‐induced cell death

open access: yesFEBS Open Bio, EarlyView.
Caffeine reduces cell death in the developing retina under ischemia (OGD). This effect does not involve BDNF upregulation or antioxidant pathways (NRF2/VEGF). Neuroprotection occurs mainly through adenosine A2A receptor antagonism, decreasing glutamate release and excitotoxicity, highlighting caffeine's potential as an acute neuroprotective agent in ...
Amanda Alves Nascimento   +6 more
wiley   +1 more source

Crystalline titanate catalyst supports

open access: yes, 1991
A series of new crystalline titanates (CT) are shown to have considerable potential as catalyst supports. For Pd supported catalyst, the catalytic activity for pyrene hydrogenation was substantially different depending on the type of CT, and one was ...
Dosch, Robert G., Anthony, Rayford G.
core  

Obtenção de nanotubos de carbono a partir da reação de decomposição catalítica do metano sobre catalisadores de ferro, cobalto e níquel suportados em alumina [PDF]

open access: yes, 2013
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2013.Este trabalho teve como objetivo a obtenção de nanotubos de carbono através da reação de ...
Araujo, Luiza Rosa de
core  

Highly tunable catalyst supports for single-site ethylene polymerization

open access: yes, 2015
A new class of tunable crystalline solid supports for metal complexes has been synthesized and used for ethylene polymerization. We developed a family of high surface area, highly dispersible layered double hydroxides (AMO–LDHs) which, on treatment with ...
Jean-Charles Buffet   +16 more
core   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

open access: yesFEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata   +13 more
wiley   +1 more source

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