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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
12 Oct 1957-Nature
TL;DR: It has now been found that when viable organisms are suspended in sucrose solution and treated with these enzymes, relatively stable protoplasts are obtained in good yield.
Abstract: WHEN certain bacteria are suspended in sucrose solution of suitable concentration and incubated with lysozyme, the rigid cell-walls are dissolved away, leaving relatively stable spherical protoplasts1 Lytic enzymes which dissolve the isolated cell-walls of vegetative Bacillus cereus have been found in extracts of mechanically disintegrated resting spores2 and partial autolysates of sporulating cells3 of this organism When heat-treated, intact vegetative cells were treated with preparations of these enzymes, the walls were dissolved, leaving the coagulated cell-contents apparently unchanged It has now been found that when viable organisms are suspended in sucrose solution and treated with these enzymes, relatively stable protoplasts are obtained in good yield

11 citations

Journal ArticleDOI
T. Gillespie1
TL;DR: In this article, the effect of electric charges on the particles of an aerosol on its rate of coagulation due to Brownian movement, differences in gravitational settling and turbulence was investigated.
Abstract: Smoke-chamber experiments have been carried out to determine the electric charge distributions and the constants descriptive of coagulation and surface loss of aerosols of porous silica powder, magnesium oxide and ammonium chloride. The data obtained were used to test the hypothesis that the rate of coagulation is affected by the electric charge distribution. Calculations have been made of the effect of electric charges on the particles of an aerosol on its rate of coagulation due to Brownian movement, differences in gravitational settling and turbulence. A simple expression for the coagulation constant was obtained which was found to be a function of the fraction of positive particles, the fraction of negative particles, the average particle charge of each sign and the average radius. A more exact treatment of ageing data than has previously been presented indicated a possible variation in the coagulation and surface loss constants with time, and this variation has been shown to be related to changes in the electric charge distribution.

11 citations

Journal ArticleDOI
J. R. Hunter1
02 May 1959-Nature
TL;DR: It may be of help to those using the Ouchterlony5 and Mansi6 techniques if the successful system devised and regularly in use here is made more widely known.
Abstract: A NUMBER of requests have been received at this Establishment asking for details of the method and materials used for the photographic recording of agar diffusion plates1–4. It may be of help to those using the Ouchterlony5 and Mansi6 techniques if the successful system devised and regularly in use here is made more widely known.

11 citations

Journal ArticleDOI
K. R. May1
14 Mar 1959-Nature
TL;DR: In this, microscope slides were coated with a gelatin film which incorporated a purified dye which gave a permanent sample and when ideally prepared detected fog droplets down to 1µ.
Abstract: Liddell and Wootten1 have described a method for sampling fog droplets in a suitable form for measurement under the microscope. In this, microscope slides were coated with a gelatin film which incorporated a purified dye. When water droplets impinged on this film a characteristic dark crater-like ring remained after evaporation of the droplet. The film gave a permanent sample and when ideally prepared detected fog droplets down to 1µ. The ratio of the diameter of the ring to the original droplet was constant.

11 citations


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