Regulation of macronuclear DNA content during the cell cycle of the ciliate Tetrahymena paravorax (microstome form)]

Results of autoradiographic studies of 3H-thymidine incorporation support a model of macronuclear DNA content regulation involving an action upon the extremes of DNA content: elimination of S phase in cells with large DNA content, additional S phase in cells with DNA content. The frequency of each of these phenomena is about 20%: the inequality of frequencies obtained with the two types of sister cells (proters and opisthes) is relatable to the asymetry of cytodieresis observed in this ciliate.     

The influence of furosemide on the renal excretion of chloramphenicol and its metabolites.

Simultaneous administration of chloramphenicol and furosemide (10 mg i.v.) decreased urinary excretion of chloramphenicol but increased the excretion of its metabolites as aryl amines and total nitro compounds. These latter increases were directly related to Na excretion.     

Oxytocin analogs effective as noncompetitive inhibitors in uterotonic test

Summary Deamino-1-carba-oxytocin analogs with a chemically reactive group in position 4 were demonstrated to act as noncompetitive oxytocin inhibitors in the assay on isolated rat uterus.     

Cataract induced by administration of a single dose of sodium selenite to suckling rats

Summary A single dose of sodium selenite to male suckling rats causes permanent or intermittent cataracts. The resistance to the lethal effect of selenite in suckling rats is significantly higher in comparison with adult animals.     

Pharmacologic properties of the toxins isolated from the sea anemone (Anemonia sulcata)]

We have shown that if toxin II isolated from Anemonia sulcata is mainly cardiotoxic on Rats it nevertheless displays neurotoxic effects. Furthermore it releases acetylcholine from isolated Guinea Pig ileum.     

胎架立杆承载力计算分析

胎架是指主要起承重受力作用的脚手架,在模板工程、钢结构安装工程、桥梁工程中应用广泛．为了保证结构施工中胎架的安全,快速准确地对胎架进行设计计算具有重要的工程意义．与常用的单双排脚手架计算不同,胎架承载力的计算需要通过设计确定．通过分析影响承载力的各种因素及胎架破坏形式,运用参考规范的概率极限状态设计法和ANSYS程序分析的方法,得出了给定胎架参数下的承载力数值表格,对胎架立杆的搭设具有指导作用．