Ioffe effect

It is worth pointing out here that if material that is subject to deformation is soluble in the liquid into which it has been immersed, one may observe the so-called Ioffe effect. This effect is, for instance, revealed when brittle crystals of sodium chloride undergo plastic deformation in a pool of water that is not saturated with salt and dissolves the surface. In this case plasticity occurs not due to a decrease in resistance to plastic flow, as in the case of adsorption plasticizing, but rather due to an increase in the strength of crystals because of the dissolution of surface layer containing structural defects. 

Very recently, Ioffe and coworkers have developed a new convenient two-step procedure for the conversion of 26 to 28 via intermediate Af,V-bis(siloxy)enamines 29 (Scheme 21). It was observed that Zn(OTf)2 is the most effective catalyst, whereas the use of chlorine-containing Lewis acids leads to the formation of the corresponding chloro derivative, as the product. 

Holash J, Davis S, Papadopoulos N, Croll SD, Ho L, Russell M, Boland P, Leidich R, Hylton D, Burova E, Ioffe E, Huang T, Radziejewski C, Bailey K, Fandl JP, Daly T, Wiegand SJ, Yancopoulos GD, Rudge JS. VEGF-Trap a VEGF blocker with potent antitumor effects. Proc Natl Acad Sci USA 2002 99 11393-11398. 

There was some interest in thermionic conversion in Russia in the 1940s. In particular, A. F. Ioffe discussed the thermionic converter as a vacuum thermoelement in 1949. Analytical studies of thermionic conversion that neglected the effects of space charge and collector temperature were published in the early 1950s. The first thermodynamic analysis of a thermionic converter was given by G. N. Hatsopoulos in 1956. 

Ioffe, S., Havlicek, V., Friesen, H., and Chernicl, V., 1978, Effect of somatostatin (SRIF) and L-glutamate on neurones of the sensorimotor cortex in awake habituated rabbits. Brain Res. 153 414-418. 

Bonde, J.P., Ioffe, M., Apostoh, P., Dale, A., Kiss, P., Spano, M., et al., 2002. Sperm count and chromatin structure in men exposed to inorganic lead lowest adverse effect levels. Occup. Environ. Med. 59, 234—242. 

Jansen AH, Ioffe S, Russell BJ, Chemick V Effect of carotid chemoreceptor denervation on breathing in utero and after birth. J Appl Physiol 1981 51 630-633. Purves MJ. The effects of h3fpoxia in the new-born lamb before and after denervation of the carotid chemoreceptors. J Physiol 1966 185 60-77. 

Transient experiments were also performed on pentacene OFETs with tantalum oxide as the dielectric. The channel length used was 50 j,m, so that the effect of the initial displacement current can be eliminated. Fabrication scheme A was used in making the OFETs. The substrates were treated with vapors of HMDS. The HMDS treatment resulted in decreased threshold voltage, and an increase in lon/Ioff ratio by more than an order of magnitude [33]. The steady state characteristics of the transistor are shown in Fig. 15a. The saturation region mobility obtained from the FET... 

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