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Institution

Ministry of Supply

About: Ministry of Supply is a based out in . It is known for research contribution in the topics: Polarography & Bacillus (shape). The organization has 416 authors who have published 355 publications receiving 8951 citations. The organization is also known as: MoS.


Papers
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Journal ArticleDOI
01 Jun 1957-Nature
TL;DR: Turner and Appel as mentioned in this paper studied the brown stain formation on wet cellulosic materials and showed that it can be seen by putting a strip of filter paper as a wick in distilled water, and in a few hours a brown stain is found at the top of the wick or of its wet portion.
Abstract: THE phenomenon of the ‘brown stain’ formation on wet cellulosic materials was reported1 in 1934 and has since been studied by Turner2 and his colleagues at Manchester, and by Appel3 and others in the United States, but does not even yet seem widely known. As the effect may be encountered in paper chromatography and with the Weisz4 ‘ring-oven’, it may save trouble to workers in those techniques if attention is directed to it. The effect can readily be seen by putting a strip of filter paper as a wick in distilled water. In a few hours a brown stain is found at the top of the wick, or of its wet portion. The immediate neighbourhood of the stain has a brilliant white fluorescence under ultra-violet light and is strongly dyed by methylene blue (0.1 per cent in water).

8 citations

Journal ArticleDOI
01 Dec 1950-Nature
TL;DR: In this article, Kumagai and Isoda showed that the specific burning time is the inverse of a quantity referred to in the work at the National Gas Turbine Establishment as the evaporation constant λ.
Abstract: IT is of interest to find that Drs. Kumagai and Isoda's results are in agreement with the earlier measurements at the National Gas Turbine Establishment. The constant T/d02 they refer to as the specific burning-time is the inverse of a quantity referred to in the work at the National Gas Turbine Establishment as the evaporation constant λ. In the case of liquid fuel drops, the latter concept is perhaps of more general significance, as it can be applied to evaporation under both non-burning and burning conditions. In the low-temperature case the evaporation-rate is determined by diffusion processes, and in the high-temperature case the evaporation-rate is determined by heat transfer processes. In both cases experiments have shown that the mass evaporation-rate is proportional to the first power of the radius of the drop. Hence in both cases T/d02 is constant, and may be conveniently referred to in the general case as the specific lifetime of the drop.

8 citations

Journal ArticleDOI
01 Sep 1947-Nature
TL;DR: In their description of the solar radio emissions from the great sunspot of February 1946, Appleton and Hey1 pointed out that a number of sudden enhancements of intensity, observed at about 5 metres wave-length, occurred simultaneously with increases in D-layer ionization as indicated by fade-out on long-distance radio-communication circuits as mentioned in this paper.
Abstract: In their description of the solar radio emissions from the great sunspot of February 1946, Appleton and Hey1 pointed out that a number of sudden enhancements of intensity, observed at about 5 metres wave-length, occurred simultaneously with increases in D-layer ionization as indicated by fade-outs on long-distance radio-communication circuits. This increased ionization, which is believed to be due to enhanced solar ultra-violet radiations, strongly absorbs the radio communication waves (of the order of 20 metres wave-length) but does not produce any marked absorption of the solar radio emissions at wave-lengths of 5 metres or less.

8 citations

Journal ArticleDOI
01 Nov 1944
TL;DR: In this article, an analysis is given of the distribution of stress in a semi-infinite elastic medium due to the action of an external force applied to the interior of the medium.
Abstract: 1. In this paper an analysis is given of the distribution of stress in a semi-infinite elastic medium due to the action of an external force applied to the interior of the medium. It will be assumed throughout that the force acts in a direction perpendicular to that of the boundary of the solid; the analysis is similar when the line of action of the force is parallel to the boundary and is therefore not given here. The equations of plane strain parallel to the x - y plane are employed; physically this is equivalent to assuming that there is no component of the displacement vector in a direction normal to the x - y plane or, what is the same thing, that the external force is applied along are infinite line parallel to the axis of z .

8 citations

Journal ArticleDOI
TL;DR: In this article, the conditions for polarography were laid down and the theoretical aspects of the results obtained with a single-sweep cathode ray polarograph were discussed, and recommendations for their determination in the presence of one another were presented.

8 citations


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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20211
20191
20171
20141
20121
20111