绵羊痒病在国内的首次报告

1982年7月四川省凉山彝族自治州从苏格兰购回2岁左右的边区莱塔特(简称边莱)种羊115只。1983年4～5月和12月,先后发现其中有2只母羊和3只一岁龄的纯种后代羔羊出现明显的搔痒与神经症状,经检查未见螨和虱等外寄生虫。一只母羊因迅速失重,后躯瘫痪,躺卧不起,于濒死期剖杀。尸体剖检无明显病变。病理组织学切片观察,在中枢神经系统的脑干(延髓、脑桥、丘脑和纹状体)呈两侧对称性的损害,出现特征的空泡性神经元(所谓“气球样细胞”)、灰质不同程度的海绵状变性和星形胶质细胞的肥大与增生等病变。取脑和脾作细菌培养为阴性,以病羊脑悬浮液接种家兔未发病。诊断是以呈现典型的痒病症状和脑内的组织损害为依据。     

CHANGES IN HUMAN TISSUE ELECTROLYTES IN SENESCENCE

Analyses of tissues from people over seventy years old who died from accidents were compared with analyses of tissues from thirty to forty-year-old people who also died from accidents. The old tissues contained more water, chloride, total base, sodium and calcium; and they contained less potassium, magnesium, phosphorus, nitrogen and ash than the younger tissue.     

浅淡混凝土冬季施工措施

对呼和浩特市财政局办公楼12层以上框架主体混凝土工程的研究,掺防冻剂和综合蓄热法的冬季施工措施,以及在施工过程中的具体控制办法,降低了造价,保证了混凝土不被受冻破坏。