The research in the anti-radiation damage effects of Peptide and protein
Radiation has become the fourth largest pollution after the water,air and noise pollution,which caused acute,chronic radiation damage and even cancer.At present,the study on the development of the anti-radiation damage drug,especially non-toxic or low toxic radiation protective agent obtained from natural bio-active substances,has become a new focus.The natural anti-radiation active substances research focuses on polysaccharides,saponins,coumarins,alkaloids,etc.,however,relatively less on peptide and protein research.Summarized the peptides and protein with anti-radiation function,this paper is to describe the research result for the 11 kinds of domestic peptides and protein radiation damage nearly in recent 10 years,which will provide reference for future research and development.
Abstract A simple method of compensating for the kinematic energy spread of the particles from a nuclear reaction detected in a silicon PSD is described. The technique relies on a suitable choice of the series resistor for the reaction of interest and the degree of compensation is shown to be equivalent to the first order correction for the acceptance of a magnetic spectrometer. Experimental results using recoil protons, elastically scattered alpha-particles and carbon ions from a heavy ion induced reaction illustrate the practical application and success of the technique. The limit of the compensation for light ions is set by the resistive noise in the ‘energy x position’ signal while for heavy ions the nuclear scattering spread sets the lower limit.