Results 211 to 220 of about 46,785 (260)
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Electron spin resonance spectroscopy
1995Although review papers exist pertaining to the use of electron spin resonance (ESR) spectroscopy in polymer science, to detect transient radicals formed during the initiation and propagation steps of polymerization and in polymer degradation1 and in biochemistry2–3, a similar compilation of published papers on applications of ESR in dye chemistry has ...
H. S. Freeman, R. D. Bereman
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In Vivo Dosimetry by Electron Spin Resonance Spectroscopy
Health Physics, 1968AbstractSeveral tissues, especially hard tissues, showed persistent electron spin resonances following in vivo or in vitro irradiations. The resonances had a linear relation to dose. Dose measurements were made in teeth at less than 100 rads of 60Co radiation.
J M, Brady, N O, Aarestad, H M, Swartz
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Electron Spin Resonance Spectroscopy
1999Some ideas of generalized Peierls as well generalized spin-Peierls (s-P) transitions in conjugated (quasi) 1D—polymers are discussed. ESR, IR and microwave photoconductivity studies on oriented carbynoid samples prepared by chemical dehydrofluorination of poly(vinylidene fluoride) (PVDF) agreed rather well with the assuption of a room temperature ...
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Electron-spin-resonance/electron-paramagnetic-resonance spectroscopy of iron-sulphur enzymes
Biochemical Society Transactions, 1985The conjugated iron-sulphur proteins are enzymes that contain iron-sulphur clusters, which are paramagnetic in certain oxidation states. Numerous enzymes of this type have been isolated (Palmer, 1975; Cammack, 1979; Yoch & Carithers, 1979), and whole books have been devoted to them (Lovenberg, 1977; Spiro, 1982).
R, Cammack, D S, Patil, V M, Fernandez
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Radiostability of Allantoin by Using Electron Spin Resonance Spectroscopy
Spectroscopy Letters, 2013ABSTRACT The radiosterilization potential and dosimetric feature of allantoin were investigated through the molecular degradations produced after ultraviolet and gamma irradiation using electron spin resonance, infrared, and ultraviolet spectroscopies and thermal measurement techniques (differential thermal analysis and the glass transition temperature)
Üstündag I., Korkmaz M.
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Dipolar spectroscopy and spin alignment in electron paramagnetic resonance
Chemical Physics Letters, 2000Abstract Two single-frequency techniques for refocusing (SIFTER) dipolar couplings between electron spins are introduced. The experiments are based on the solid-echo and Jeener–Broekaert sequences, well established in dipolar NMR spectroscopy of solids, and open up new routes to high-resolution two-dimensional EPR spectroscopy with only moderate ...
Jeschke, G +3 more
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Eumelanins and Pheomelanins: Characterization by Electron Spin Resonance Spectroscopy
Science, 1982Synthetic dopa melanin and cysteinyldopa melanin have different electron spin resonance spectra. Data are reported for mixtures of these melanins and for dopa-cysteinyldopa copolymers, which are spectroscopically similar. A simple parameterization of the spectra allows estimation of the relative amounts of (i) dopa melanin and cysteinyldopa melanin in ...
R C, Sealy +4 more
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Polymer degradation and electron spin resonance spectroscopy
Pure and Applied Chemistry, 1968Abstract
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Electron Spin Resonance Spectroscopy (Esr)
1986Electron spin resonance (esr) (also known as electron paramagnetic resonance, epr) has been successfully applied to biological problems since the late 1950s (Commoner et al., 1957). The method compares closely with nmr in being essentially nondestructive since the measuring wavelengths fall within the microwave portion of the spectrum, corresponding to
John R. Wright +3 more
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Single-chip detector for electron spin resonance spectroscopy
Review of Scientific Instruments, 2008We have realized an innovative integrated detector for electron spin resonance spectroscopy. The microsystem, consisting of an LC oscillator, a mixer, and a frequency division module, is integrated onto a single silicon chip using a conventional complementary metal-oxide-semiconductor technology.
Yalcin, T., Boero, G.
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