Induction of Fibrosarcomas in Mice given a Minute Quantity of 3-Methylcholanthrene or Dibenz(a,h)anthracene as New-borns

Nature ◽  
1962 ◽  
Vol 196 (4860) ◽  
pp. 1220-1221 ◽  
Author(s):  
ROGER W. O'GARA ◽  
MARGARET G. KELLY ◽  
NATHAN MANTEL
Keyword(s):  
Minute Quantity

scholarly journals On a new constituent of atmospheric air

1898 ◽  
Vol 63 (389-400) ◽  
pp. 405-408 ◽  
Keyword(s):  
Preliminary Note ◽  
Atmospheric Air ◽  
The Past ◽  
Metallic Magnesium ◽  
Minute Quantity

This preliminary note is intended to give a very brief account experiments which have been carried out during the past year ascertain whether, in addition to nitrogen, oxygen, and argon, ere are any gases in air which have escaped observation owing their being present in very minute quantity. In collaboration th Miss Emily Aston we have found that the nitride of magnesium, resulting from the absorption of nitrogen from atmospheric or, on treatment with water yields only a trace of gas; that gas is drogen, and arises from a small quantity of metallic magnesium converted into nitride. That the ammonia produced on treatment with water is pure has already been proved by the fact that Lord Rayleigh found that the nitrogen obtained from it had the noral density.

Component Mobility by a Minute Quantity of the Appropriate Solvent as a Principal Motif in the Acceleration of Solid-Supported Reactions

2015 ◽  
Vol 80 (10) ◽  
pp. 5176-5188 ◽  
Author(s):  
Gil Fridkin ◽  
Ishay Columbus ◽  
Sigal Saphier ◽  
Lea Yehezkel ◽  
Michael Goldvaser ◽  
...  
Keyword(s):  
Minute Quantity

scholarly journals I. On a second case of the occurrence of silver in volcanic dust, namely, in that thrown out in the eruption of Tunguragua in the Andes of Ecuador, January 11th, 1886

1890 ◽  
Vol 47 (286-291) ◽  
pp. 276-281
Keyword(s):  
Royal Society ◽  
The Andes ◽  
Minute Quantity

In a paper laid before the Royal Society three years ago, I gave an account of a specimen of volcanic dust, or so-called ash, from the eruption of Cotopaxi of July 22nd and 23rd, 1885, in which ash silver was found to be present in minute quantity, that being the first instance in which this metal had been detected among the materials ejected from volcanoes. The specimen was sent me by my friend and former pupil Senor Julio R. Santos, of Bahia de Caraguez, Ecuador.

scholarly journals 1. On the Action of Voltaic Electricity on Alcohol, Ether, and Aqueous Solutions

1845 ◽  
Vol 1 ◽  
pp. 96-98
Author(s):  
Arthur Connell
Keyword(s):  
Aqueous Solutions ◽  
Caustic Potash ◽  
Negative Pole ◽  
Minute Quantity

The author was led into the following investigations, from observing that when alcohol, holding a minute quantity of pure caustic potash, as part, in solution, was acted on by a moderate voltaic power, as a small battery of fifty pairs of two-inch plates, evident marks of decomposition were exhibited, by an evolution of gas from the negative pole, and none from the positive. The experiment recalled to the author's recollection a statement made a few years ago by Dr Ritchie (Phil. Trans. 1832), that when alcohol not holding any substance in solution, was acted on by a powerful battery, gas was given off at the negative pole, which Dr Ritchie stated to be olefiant gas.

Some observations on the ova of the salmonidæ

1854 ◽  
Vol 6 ◽  
pp. 149-150
Keyword(s):  
Remarkable Property ◽  
Minute Quantity

The author prefaces his observations by a quotation from the work of M. Vogt on the Embryology of the Salmonidæ, in which a remarkable property of the vitellus is described, viz. its coagulation by admixture with water. This inquirer’s experiments were made chiefly on the ova of the Palée ( Coregonus Palæa , Cuv.); the author’s mostly on the ova of the Charr ( Salmo umbla ). After giving a description of the mature eggs of this fish, he details the trials instituted by him:- 1st, on the action of water, showing its coagulating effect, except when added in very minute quantity.

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