نتایج جستجو برای: oxygen carrier

تعداد نتایج: 278738  

Journal: :Journal of the American Chemical Society 2004
Dirk V Deubel

Thermodynamic electron-transfer potentials from biology textbooks elucidate the sequence of electron-transfer events in the respiratory chain in mitochondria. In this study, thermodynamic and kinetic oxygen-transfer potentials have been defined and predicted for oxidants and substrates using density functional theory, aiming to rationalize multiple oxygen-transfer events in chemical catalysis, ...

Journal: :international journal of epidemiologic research 2015
yoosef aslani masoud amiri hossein ali mehralian

every year, millions of muslims from all over the world, are going to participate in the pilgrimage hajj located in mecca in kingdom of saudi arabia (ksa). the accumulation of many people from all parts of the world in terms of health management is of great importance. in fact, every person could be a carrier of various chronic or acute diseases. this huge population may lead to occurrence of s...

Journal: :Journal of microbiology and biotechnology 2010
Myung-Ji Seo Soon-Ok Kim

Coenzyme Q(10) (CoQ(10)) productions from Rhizobium radiobacter T6102 were monitored under various oxygen supply conditions by controlling the agitation speeds, aeration rates, and dissolved oxygen levels. As the results, the CoQ(10) production was enhanced by limited oxygen supply. To investigate whether the CoQ(10) production is associated with its physiological functions of electron carrier ...

2017
J. Hicks R. Arora E. Kenyon P. S. Chakraborty H. Tinkey J. Hankinson Claire Berger Walt A. De Heer Jeremy Hicks Rajan Arora Eleazar Kenyon Partha S. Chakraborty John Hankinson Walt A. de Heer Edward H. Conrad John D. Cressler

We characterize multilayer graphene grown on C-face SiC before and after exposure to a total ionizing dose (TID) of 12 Mrad(SiO2) using a 10 keV X-ray source. While we observe the partial peeling of the top graphene layer and the appearance of a modest Raman D-peak, we find that the electrical characteristics (mobility, sheet resistivity, free carrier concentration) of the material are mostly u...

2007
Bin Fan Roland Hany Frank Nüesch

The effect of exposing cyanine–fullerene C60 bilayer solar cells to ambient atmosphere is investigated. For exposure times of a few hours and concomitant light soaking, the device performance experiences a drastic power efficiency increase going from 0.14% to 1.2% measured at 30 mW/cm simulated solar irradiation. The 10-fold enhancement is attributed to the photoinduced doping involving oxygen ...

2010
Bianca Lim Fiacre Rougieux Daniel Macdonald Karsten Bothe Jan Schmidt

The impact of boron–oxygen-related recombination centers as well as their defect kinetics have been intensely studied in boron-doped oxygen-rich p-type crystalline silicon. Experimental data for the defect in simultaneously boronand phosphorus-doped compensated pand n-type silicon, however, is sparse. In this study, we present time-resolved carrier lifetime measurements on Czochralski-grown sil...

Journal: :The Biochemical journal 1965
A L GREENBAUM J B CLARK P MCLEAN

1. A method is described for the determination of the oxidized and reduced forms of the nicotinamide nucleotides by measuring the rate of the oxygen uptake with an oxygen electrode in a system in which the nucleotide acts as the rate-limiting carrier in a cyclic system. 2. The method permits the measurement of quantities as low as 0.02mug. of NAD(+) or NADH or 0.01mug. of NADP(+) or NADPH. 3. T...

2014
Sajjad Hussain Muhmmad Waqas Iqbal Jaehyun Park Muneer Ahmad Jai Singh Jonghwa Eom Jongwan Jung

Hydrogen flow during low pressure chemical vapor deposition had significant effect not only on the physical properties but also on the electrical properties of graphene. Nucleation and grain growth of graphene increased at higher hydrogen flows. And, more oxygen-related functional groups like amorphous and oxidized carbon that probably contributed to defects or contamination of graphene remaine...

Journal: :Journal of pharmacological sciences 2004
Hiroshi Otani Subrina Jesmin Hiroko Togashi Ichiro Sakuma Kunihiko Nakai Hiroshi Satoh Mitsuhiro Yoshioka Akira Kitabatake

Evidence suggests that S-nitrosylation is a biological process involved in cerebral ischemia. The aim of the present study was to elucidate the effects of S-nitrosylated (SNO) polyethylene glycol-conjugated (PEG) hemoglobin (Hb) developed as an artificial oxygen carrier, which can absorb free NO and translocate NO to a sulfhydryl (SH) moiety, on ischemic cerebral dysfunction. Long-term potentia...

Journal: :American journal of physiology. Heart and circulatory physiology 2005
Milica Radisic William Deen Robert Langer Gordana Vunjak-Novakovic

A steady-state model of oxygen distribution in a cardiac tissue construct with a parallel channel array was developed and solved for a set of parameters using the finite element method and commercial software (FEMLAB). The effects of an oxygen carrier [Oxygent; 32% volume perfluorocarbon (PFC) emulsion] were evaluated. The parallel channel array mimics the in vivo capillary tissue bed, and the ...

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