Results 301 to 310 of about 443,806 (346)
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Electron tunneling from donors and excitons
Solid-State Electronics, 1988Abstract Experimental results on elastic tunneling of electrons from shallow levels in uniformly doped bulk semiconductors are reviewed. Recent observation of the tunneling in nanosecond time range has stimulated development of transient tunneling spectroscopy, which can yield information on the tunneling parameters, level spectrum and non-steady ...
A. Dargys, A. Matulionis
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Electron donor–acceptor complexes
Nature, 1976Catalysis by Electron Donor–Acceptor Complexes: Their General Behaviour and Biological Roles. By Kenzi Tamaru and Masaru Ichikawa. Pp. viii+208. (Kodansha: Tokyo; Wiley: New York and London, March 1976.) $23.40; £11.70.
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Electron donor-acceptor properties of haematoporphyrin
Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1968Abstract 1. The interaction of haematoporphyrin with a wide range of electron donors has been studied spectrophotometrically in phosphate buffer solution at pH 9 where the spectrum is insensitive to small changes of pH. 2. It has been shown that haematoporphyrin forms 1:1 complexes, the difference spectra being temperature reversible and containing ...
J G, Heathcote +3 more
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Making Benzotrithiophene a Stronger Electron Donor
Organic Letters, 2011A new member of the benzotrithiophene family, benzo[2,1-b:-3,4-b':5,6-c″]trithiophene (3a), and its alkyl substituted derivatives (3b-e) were synthesized and characterized. Their photophyscial, electrochemical, crystallographic, and self-assembly properties were described.
Guo, X. +4 more
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Electron donors for biological sulfate reduction
Biotechnology Advances, 2007Biological sulfate reduction is widely used for treating sulfate-containing wastewaters from industries such as mining, tannery, pulp and paper, and textiles. In biological reduction, sulfate is converted to hydrogen sulfide as the end product. The process is, therefore, ideally suited for treating metal-containing wastewater from which heavy metals ...
Warounsak, Liamleam, Ajit P, Annachhatre
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Electron donor-acceptor couples
International Reviews in Physical Chemistry, 1995Abstract Two-state small-polaron models commonly used to describe an electron donor—acceptor pair are reviewed. From such models, one obtains a one-dimensional model potential. In the homonuclear case, the reaction coordinate for the potential is an antisymmetric vibrational mode.
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Donor-Based Single Electron Pumps with Tunable Donor Binding Energy
Nano Letters, 2012We report on single electron pumping via a tunable number of individual donors. We use a device that essentially consists of a silicon nanowire with local arsenic implantation between a set of fine gates. A temperature-dependent characterization of the pumped current allows us to extract the ionization energy of a single arsenic donor.
G P, Lansbergen, Y, Ono, A, Fujiwara
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Donor-Substituted Diphenylacetylene Derivatives Act as Electron Donors and Acceptors
The Journal of Organic Chemistry, 2011Despite the predominant electron donor character of p-phenylenediamine, our studies on extended p-phenylenediamine derivatives show that they can not only be chemically oxidized, giving well-known Wurster-type radical cations, but also be chemically reduced, giving radical anions.
Christine, Onitsch +7 more
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Ampicillin serves as an electron donor
International Journal of Biochemistry, 19901. The effect of ampicillin on cytochrome c reduction and on the superoxide production of human neutrophils stimulated by phorbol myristate acetate (PMA) was investigated. 2. Ampicillin did not stimulate the superoxide production of intact (resting) neutrophils and not amplify the superoxide production of neutrophils stimulated by phorbol myristate ...
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Purple Bacteria: Electron Acceptors and Donors
2013ABSTRACT: Purple bacteria form a heterogeneous group of microorganisms capable of growing under anoxic conditions by anoxygenic photosynthesis. They can be divided in purple non-sulfur bacteria, which are able to grow both phototrophically and in darkness, and purple sulfur bacteria, all of them capable to grow in the light but only few of them in the ...
ADESSI, ALESSANDRA +1 more
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