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.

Reversible Textile Transformation

Abstract: Knit textile structures are formed of a yarn made of composite fibers, which is an active material within the knit structure that transforms in response to a change in temperature. In combination with non-active fibers and performative knit structure, this contraction can enable changes in the fabric that are adaptive to changes in environmental conditions during wear.

The Rate of Evaporation of Particles in Some Pesticide Aerosols

Abstract: The evaporation rates of small particles in aerosols of the following substances have been measured: 4−n−hexyl-1:3-resorcinol, 1, 1, 1-trichloro-2, 2−di (p−chlorphenyl)ethane (‘DDT’), 1, 1, 1−trichloro-2-p−chlorphenyl-2-o−chlorphenyl-ethane (‘op′-DDT’), γ-hexachloro-cyclo-hexane (‘BHC’, ‘Lindane’, ‘Gammexane’), ‘Dieldrin’ and azobenzene.The slit ultra-microscope method was used; a consideration of the experimental conditions leads to the conclusion that the results are of reliable quantitative significance.

Production of Individual, Sized, Droplets by High-Voltage ‘Firing’ from a Micropipette

Abstract: THERE are several satisfactory methods for the continuous production of uniform droplets. The range below 10 microns may be covered in the La Mer vapour condensation apparatus, 10 µ–1,000µ, by the spinning disk principle, 100 µ to several millimetres by the vibrating tip, interrupted jet and micro-burette principles and 800 µ to 6–7 mm. by liquid falling by gravity from the tip of a vertical tube.

Tropospheric Wave Propagation in a Duct of Non-Uniform Height

Abstract: This paper describes an approximate method for extending the simple mode theory of tropospheric refraction (Booker and Walkinshaw 1947) to cover situations where the refractive index profile varies with range The transmission path is divided into a number of zones, in each of which the variation in the refractive index profile is small In each zone the profile is then taken to be independent of range, and given by the mean profile throughout the zone. The duct-width d and the lapse-rate of modified refractive index at infinite height kinfinity are found for each zone and are used, together with published propagation curves, to evaluate the distribution of radio field strength in the region beyond the horizon of a transmitter Although the method is a general one, the final formula refers specifically to situations in which the field can be adequately described by the first mode alone, and where the mean profile of refractive index in each zone may be represented analytically by a one-half power law curve. An example of the application of the method to a practical situation is given This shows good agreement between experiment and theory, and demonstrates the significant effect of changes in the refractive index profile on the level of field strength The limitations of the method are pointed out, and its extension to cover other types of refractive index profile and higher order modes is outlined