Electron paramagnetic resonance measurements

Electron paramagnetic resonance measurements only identify vacancies or vacancy complexes in Si irradiated by electrons. The absence of Si self-interstitials has been ascribed to rapid athermal migration even at 2 K (13). 

Doi, Y., Lee, B. R., Ikeguchi, M., Ohoba, Y., Ikoma, T., Terao-Kubota, S., Yamauchi, S., Takahashi, K., and Ichishima, E. (2003). Substrate specificities of deuterolysin from Aspergillus oryzae and electron paramagnetic resonance measurement of cobalt-substituted deuterolysin. Biosci. Biotechnol. Biochem., 67, 264-270. 

The tunneling hypothesis has been supported in subsequent experiments. By the electron paramagnetic resonance measurements (Kulikov et al 1979) the distances... 

Electron paramagnetic resonance measurements have confirmed the existence of polysulfenyl radicals in liquid sulfur which competitively abstract hydrogen or which react by insertion or addition to give carbon sulfur bonds (20, 21). Hydrogen abstraction and subsequent hydrogen sulfide formation occurs predominantly above 160°C and must be avoided by reducing the mixing temperature. At temperatures below 160°C the prevalent reaction is believed to be the sulfur addition into the asphalt molecule (18,19, 22,23). 

In the case where the use of mbberized cloth bags had been permitted in lieu of polyethylene material, analyses showed the presence of high concentrations of hydrolysis products and products of reaction with the drum in all regions of the drum. Electron paramagnetic resonance measurements showed the presence of iron and manganese in the lead azide lattice, although similar measurements on recently manufactured azide showed only trace amounts of iron and no manganese. The lead azide assay was also low. 

N.V. Blough (1988). Electron paramagnetic resonance measurements of photochemical radical production in humic substances. 1. Effects of O2 and charge on radical scavenging by nitroxides. Environ. Sci Technol, 22, 77-82. 

Upon photoexcitation of the film of tmns-polyacetylene, it gives rise to two induced-absorption bands in the gap state, i.e., a high-energy (HE) band at 1.4 eV and a low-energy band at 0.5 eV Based on time-resolved absorption measurements in the femtosecond to millisecond time regime, as well as EPR (electron paramagnetic resonance) measurements, it is now well established that the elementary excitations which give rise to the HE band are neutral... 

The known structures largely comprise the rod-like domain of the vimentin dimer, as illustrated in Fig. 3a. However, some segments have unknown structures. Experimental work using diffraction techniques has identified certain structural characteristics, and work based on Electron Paramagnetic Resonance measurements have revealed that the local stiffness of the LI and L2 domains (both helical structures) is close to that of the rod-like domain [65]. There appear to be persistent experimental challenges in identifying the remaining parts of vimentin IF structures. However, the intrinsic limitations in experimental methods call for the development of complementary computational methods that can provide a more controlled condition to assess the relation between the nanostructure and the nanomechanics of this class of materials. 

Bronchoalveolar lavage cells (lx 10 ) suspended in Dulbecco s phosphate buffered saline (0.5 ml) containing 5,5-dimethyl-l-pyrroline-1-oxide (DMPO 100 mM) in duplicate samples, one with and one without superoxide dismutase (500 imits/ml) by electron paramagnetic resonance measurements recorded superoxide anion generation at sites of antigen challenge (Sanders et al. 1995). 

Electron paramagnetic resonance measurements on these liquid crystals give g-values of g =2.053 and l/2(g -Hg ,) = 2.082. By contrast the corresponding... 

Kim, J. McNamee, M. G. Topological disposition of Cys 222 in the a-subunit of nicotinic acetylcholine receptor analyzed by fluorescence-quenching and electron paramagnetic resonance measurements. Biochemistry 1998, 37, 4680-4686. 

Additional support for this mechanism was obtained from electron paramagnetic resonance measurements, showing the presence of free radicals. 

---