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Experimental study has been carried out on the burst strength of fuel cladding tubes of stainless steel and zircaloy under simulated loss-of-coolant accidents in water-cooled power reactors. The results of high-temperature tensile tests and high-temperature burst tests conducted under static and dynamic loading conditions are analysed. The effect of absorbed hydrogen on the mechanical properties of the tubes is investigated.

The clinical course of the for ty patients of gastric cancer who are surviving over five years af ter gastrectomy were reviewed mainly with correspondence. Total number of the patient operated on in our department for gastric cancer f rom 1950 until 1961 is 421 cases, and tumors were resected in 265 cases namely 63%. The period between the onset of vague al imentary symptoms and the operation ranges f rom one month to fifteen years and 21 months on the average. It should be emphasized that level of diagnostic ability of home docters is important to yield good survival rate. 90% of all the operated patients belonged to the 3rd or 4th stage according to operative finding, and only one case was classified into 1st stage. On the contrary, half of the surviving patients belonged to 1st or 2nd stage, so only 50% of the surviver is derived f rom 3rd or 4th stage. The survivers who experienced gastrointest inal bleeding or obstructive jaundice postoperatively are not rare, so these are by no means desperate signs.