Results 61 to 70 of about 816,336 (269)

New hydrogen-bonding organocatalysts: Chiral cyclophosphazanes and phosphorus amides as catalysts for asymmetric Michael additions

Beilstein Journal of Organic Chemistry, 2014
Ten novel hydrogen-bonding catalysts based on open-chain PV-amides of BINOL and chinchona alkaloids as well as three catalysts based on rigid cis-PV-cyclodiphosphazane amides of N1,N1-dimethylcyclohexane-1,2-diamine have been developed.
Helge Klare, Jörg M. Neudörfl, Bernd Goldfuss   +2 more
doaj   +1 more source

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

FEBS Open Bio, EarlyView.
Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young, Omar Arias‐Gaguancela, Fiona Gibson, Morgan Grainger, Jodie Score, Amit Nathubhai, Mauricio Cafiero, Lee Richard Machado   +7 more
wiley   +1 more source

Titanium as a Potential Addition for High-Capacity Hydrogen Storage Medium

Journal of Nanotechnology, 2012
We study the adsorption of hydrogen molecules on a titanium atom supported by a benzene molecule using generalized gradient corrected Density Functional Theory (DFT).
Filippo Zuliani, Leonardo Bernasconi, Evert Jan Baerends   +2 more
doaj   +1 more source

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

FEBS 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, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source

Hydrogen with water addition: an exergy analysis of the internal combustion engine

Frontiers in Mechanical Engineering
The internal combustion engine is likely to be used for on- and off-road vehicles for many years yet, but the push to cease using fossil fuels is strong. Hydrogen is a possible alternative fuel with both advantages and disadvantages, so understanding and
D. N. Rrustemi, L. C. Ganippa, C. J. Axon   +2 more
doaj   +1 more source

The Effect of Hydrogen addition on the Explosion of Ethanol/Air Mixtures

Chemical Engineering Transactions, 2012
The use of hydrocarbon-hydrogen mixtures has been proven to be a valuable system for emission reduction and flame stabilisation. For the assessment of process hazards and the safe design of process equipment handling ethanol-hydrogen, the knowledge of ...
F. Cammarota, A. Di Benedetto, V. Di Sarli, E. Salzano   +3 more
doaj   +1 more source

Cyclic azapeptide CD36 ligand attenuates cardiac injury and reduces long‐chain fatty acid accumulation after myocardial ischemia–reperfusion in mice

FEBS Open Bio, EarlyView.
In a murine model of myocardial ischemia and reperfusion (MI/R), the CD36 azapeptide ligand MPE‐298 reduces cardiac injury and transiently lowers left ventricular long‐chain fatty acids (LCFAs) accumulation 3 h after reperfusion, accompanied by a decrease of oxidative stress and inflammation‐associated genes' expression in the heart and adipose tissue.
Jade Gauvin, Naghme Radmannia, David N. Huynh, Liliane Ménard, Caroline Daneault, Maïté Veilleux, Ahsanullah Ahsanullah, André C. Carpentier, William D. Lubell, Matthieu Ruiz, Huy Ong, Sylvie Marleau, Simon‐Pierre Gravel   +12 more
wiley   +1 more source

Influence of equivalence ratio and hydrogen addition on thermoacoustic instabilities in premixed methane and propane flames in vertical tubes

Case Studies in Thermal Engineering
This research examines the behavior of premixed flames within a vertical tube, considering both an open and a closed end configuration. The study utilizes a pilot flame as the ignition source.
Abdullah M.A. Alsharif, Robert Woolley
doaj   +1 more source

Experimental Study of Hydrogen Addition Effects on a Swirl-Stabilized Methane-Air Flame

Energies, 2017
The effects of H2 addition on a premixed methane-air flame was studied experimentally with a swirl-stabilized gas turbine model combustor. Experiments with 0%, 25%, and 50% H2 molar fraction in the fuel mixture were conducted under atmospheric pressure ...
Mao Li, Yiheng Tong, Jens Klingmann, Marcus Thern   +3 more
doaj   +1 more source

Photochemical Addition of Hydrogen Chloride and Hydrogen Bromide to 1-Dodecene

The Journal of the Society of Chemical Industry, Japan, 1969
1-ドデセンに対する塩化水素と臭化水素の光付加反応を種々の溶媒中で行ない,その生成物組成と収率におよぼナ反応条件の効果を研究した。1-ドデセン自体やシクロヘキサンのような非極性溶媒中では, 塩化水素の光付加は非常に遅く, その付加生成物の組成は70%がマルコウニコフの規則にしたがう生成物(塩化2-ドデシル),30%がマルコウニコフの規則に反する生成物(塩化1-ドデシル)である。これに対し,クロロホルムやイソプロピルアルコールのような極性溶媒中では光誘発反応も暗所反応もともに主生成物として塩化2-ドデシルを与える。極性溶媒中と非極性溶媒中での光付加反応の収率の比は5～10である。また,極性溶媒中の光付加と暗所付加の収率の比は2～3である。一方,1-ドデセンへの臭化水素の光付加では,生成物の95 ...
Yoshiro OGATA, Jun ISOBE, Yasuji IZAWA
openaire   +2 more sources