CSDA

What could be the signal for the induction of the cold shock proteins It has been observed that shifting E. coli cells from 37 to 5 °C results in an accumulation of 70S monosomes with a concomitant decrease in the number of polysomes [129]. Further, it has been shown that a cold shock response is induced when ribosomal function is inhibited, e.g. by cold-sensitive ribosomal mutations [121] or by certain antibiotics such as chloramphenicol [94]. These data indicate that the physiological signal for the induction of the cold shock response is inhibition of translation caused by the abrupt shift to lower temperature. Then, the cold shock proteins RbfA, CsdA and IF2 associate with the 70S ribosomes to convert the cold-sensitive nontranslatable ribosomes into cold-resistant translatable ribosomes. This in turn results in an increase in cellular protein synthesis and growth of the cells. 

Figure 4 Continuous slowing down (CSDA) range and root mean square (rms) penetration in gaseous water according to LaVerne and Mozumder [36]. See text for details.

Figure 2 Range, csda, of some heavy ions [42] and electrons [44] in water as a function of energy. The dotted lines show the range for heavy ions of equal velocity.

Relation between range and energy of electrons in water calculated with csda. (From... 

A) Surface/CSDA PM/SDS system. The desorption was carried out by pumping of the background electrolyte solution through the capillary under different pressure values. Electrokinetic potential values of SDS adsorbed... 

Figure 2-3. Stopping power (left) and continuous slowing down approximation (CSDA) range (right) of proton (p), a-particle (a) and electron (e) in polyethylene. Data were taken from [14] for proton and a-particle, and [5] for electron, respectively.

Eigure 2.3 is a graph of the range calculated by the continuous-slowing-down approximation (CSDA) of an alpha particle, in both air and aluminum. The data that generated the graph (ICRU 1993) indicate that a 5-MeV alpha particle has a... 

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