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39904 documents, page 1 of 3991

The fate of ethyltin and diethyltin derivatives in the rat

Bridges, J. W.; Davies, D. S.; Williams, R. T. (1967)
1. Ethyltin trichloride does not appear to be metabolized by the rat. When given orally excretion occurs almost entirely in the faeces, and when given intraperitoneally it occurs exclusively in the urine. Biliary excretion is almost negligible. 2. Di[1-14C]ethyltin dichloride has been synthesized. When given intraperitoneally it is excreted in the urine and faeces in the ratio about 1:2. Both the urine and faeces contain ethyltin3+ and diethyltin2+. Diethyltin is also excreted extensively in ...

Occurrence of doliolids and salps during 1958, 1959, and 1960 off the São Paulo coast

Tavares, D. Q. (1967)
Plankton samples were collected fortnightly off São Paulo coast during 1958, 1959 and 1960. The following Thaliacians were recorded Doliolum nationalis, Dolioletta gegenbauri and Thalia democrática. Morphological and ecological aspects of each species were studied. Doliolids seemed to be endemic in the region, occurring throughout the whole period of survey. The salps occurred only occasionally in dense swarms suggesting that this species is carried into the region by offshore waters. O pr...

Mattiastrum flaviflorum Rech. f. & Riedl

Rechinger, Karl Heinz; Riedl, Harald(Harold) Udo von (1967)
in Rechinger, Fl. Iranica 48: 122. 1967

Efeito de alguns curares naturais e da d-Tubocurarina retardando o tempo de coagulação e o tempo de protombina do sangue humano

Canali,João; Vieira,João Vieira (1967)
In this paper the author points out to a old question of about 200 years ago in wich two kinds of opinions were discussed. BANCROFT and FONTANA in one hand atributes for the Indian arrow poison (curare) the propriety of uncoagulate the blood, and C. BEBNAHDJ, B. RODRIGUES and others made an contradictory opinion upon this subject. In our experiments, we utilized 4 curares samples from indians who lives near the Brazilian border at Colombia, the famous Ticunas poison, and the alkaloid d-Tubocu...