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.

Polarographic Determination of Fluoride

Abstract: Willard and Dean1 have described a polarographic method for the determination of aluminium, based on the measurement of the polarographic step produced by the reduction of ‘Solochrome Violet R.S.’ (sodium salt of 5-sulpho-2 hydroxy-α-benzene azo-2 naphthol), which is known as ‘Pontachrome violet S.W.’ in the United States. This compound produces a step of half-wave potential about 0.3 V. vs. the saturated calomel electrode in an acetate buffer solution of pH 4.6. Addition of aluminium to a solution of this dye causes this polarographic step to be reduced in height and a second step to appear at a point about 0.2 V. more negative. The sum of the height of these two steps is equal to the height of the original step, and the size of the second step is proportional to the concentration of aluminium present.

Formaldehyde condensations with phenol and its homologues. V. The methylol compounds of 3 : 5‐dimethylphenol

Abstract: The structure of the monoalcohol of 3 : 5-dimethylphenol, first made by von Auwers and believed to be a para-substituted derivative, has now been confirmed. The synthesis of a new dialcohol, which has been characterized as an ortho-ortho compound, is described. The effect of reaction conditions on the position of methylol substitution is discussed. It has been shown that during characterization of the monoalcohol, by pyrolysis with lime, methyl migration may occur.

Input impedance of horizontal dipole aerials at low heights above the ground

Abstract: The large increase in the radiation resistance of a horizontal dipole at low heights above the ground, predicted by the mathematical analysis of Sommerfeld and Renner, is confirmed by actual measurement for the case of an essentially pure dielectric ground. Measurements carried out above a series of conducting mats of increasing mesh size corroborate the supposition that the large increase in the radiation resistance at low heights is caused by a corresponding increase in the energy radiated downwards into the dielectric ground.