the protective effects of rheum tanguticum polysaccharide 1 (rtp1), which is extracted from the chinese traditional medicine rheum tanguticum, on radiation-induced intestinal mucosal injury was investigated. rat intestinal crypt epithelial cells (iec-6 cells) and sprague-dawley rats were each divided into control, irradiated and rtp1-pretreated irradiated groups. after irradiation, cell surviva...

Introduction. Experimental studies of crack formation and limit equilibrium a reinforced concrete floor slab-shell, developed by the authors, were carried out. Materials methods . The out on models made scale 1:5. Results. During tests, three stages stress-strain state established: first is elastic stage tensile work in lower part longitudinal contour ribs; second opening cracks; third destruct...

Supernumerary lumbar ribs are usually asymptomatic and discovered incidentally during routine diagnostic radiography. During a routine inventory of the research skeletal repository at the University of the Witwatersrand, a rare case of bilateral supernumerary ribs on the first lumbar vertebra was observed. The skeletal specimen belonged to a 70-year-old African male whose recorded cause of deat...