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.

Steric Influences on the Structure of Chelating Agents and on the Stability of Metal Chelates

Abstract: 2-PHENACYLPYRIDINE and its derivatives are of interest because of their possible bacteriostatic activity1 and their power to chelate metals. In addition, it has been shown2 that in the solid state they exist, with accountable exceptions, in the resonance-stabilized conjugate chelated enol form (I) rather than in the keto form (II). The purpose of this communication is to record some results of a study of their infra-red spectra, and to point out that they provide interesting examples of the influence of steric hindrance on molecular structure and on the stability of metal chelates.

Physiological Problems of the Soldier in Tropical Warfare. An Operational Approach.

Abstract: THE desert and jungle are too well known to warrant description, but their operational aspects have certain physiological implications. Land desert warfare has been, in the main, characterised by fighting vehicles and by mobile infantry in "hard" or "soft" vehicles who rarely march long distances with a pack. Dust and haze impair visibility but glare when a problem is related more to airstrips, roads and vehicles rather than to the desert itself. During the day, cooling the vehicle may be more urgent than cooling the man. Nights are seldom completely dark and hence allow manreuvres. Jungle war, on the other hand, has, in general, been characterised by hidden activities of small isolated groups of men who may have to forgo vehicles and rely on air-drops. Plantations are easy' to pass through unless neglected, and the rate of movement by foot may be . as rapid as on a fair road. Virgin forest, that is primary jungle, is thick but not always impenetrable and being sheltered is cooler and more pleasant than open country. Visibility may be a matter of ten to fifty yards, and the rate of travel is cut down by half. When primary jungle is cleared and left to itself, a dense overgrowth (secondary jungle) develops at man height through which he must cut a way. The rate of movement is cut down by another half. In swamp areas, progress of a hundred yards or less an hour may be quite an achievement. Added to all this is a hot, damp atmosphere with rain of variable amount. Hills of considerable height may occur in the tropics and are common in jungle areas.

CI. A variational formulation of the multi-stream electrodynamic field equations

Abstract: Summary A non-relativistic approximation to Dirac's new variational formulation of the single-stream electrodynamic field equations is presented using 3-vector notation and m.k.s. units throughout. The Hamilton-Jacobi theory of a rotational space charge stream is developed. The variational formulation is generalized to the multi-stream case—both for a finite number and a non-denumerably infinite number of streams.

Investigation on the iodimetric method of estimation of penicillin

Abstract: The iodimetric assay method described by Alcino1 is shown to be unsound, because of inherent variables which cannot readily be controlled. Arbitrary experimental conditions arc described which afford fair-to-good results with the method according to the grade of purity of the penicillin, but the procedure is dependent upon internal cancellation of errors.

Time-delays in low voltage halogen quenched Geiger-Müller counters.

Abstract: LOW-VOLTAGE halogen-quenched Geiger–Muller counters find increasing applications in many fields, especially for use in portable survey and assay instruments1. Their chief advantages are: (i) very low temperature coefficient down to – 50° C.; (ii) very long counting life; (iii) extreme electrical robustness; (iv) simple battery requirements; (v) large output pulse necessitating no pre-amplification.