Rb(85) and Rb (87) are separated with the aid of a high intensity mass spectrograph, the resolving power of which is examined in detail.

The atomic nuclei which emerge as a result of beta-decay are usually found in excited states, which are made known by the fact that beta-decay is accompanied by the emission of gamma-rays. The elementary spectra are frequently separated by resolving the proper Fermi graph into separate linear sections. This method, however, is not particularly reliable or accurate. Therefore, it would be desirable to measure the elementary beta-spectra directly.

Ultra microscopic study of electrolyte zone surrounding the cathode, in nickel plating, for formation of colloidal solutions and suspensions of basic nickel salts.

A comprehensive review of the properties of plasma in order to reflect the importance and a clearer understanding of the effect of variations of the properties of plasma on the yield of hydrazine in an electric discharge.

The authors investigate resonances from charged particles.

The author demonstrates that mass spectrographs are capable of improvement and can make a substantial contribution to the knowledge of nuclei.

With the assistance of formulated linear relations between spin-functions, appropriate for triplet states of molecules, construction of sets of canonical (linearly independent) structures is possible.

Two approaches are well-known for approximate consideration of any problem of the chemical bond, among them the problem of determination of directed valence.

In 1934 the concept of valence states of an atom were formulated. The author substitutes the integrals in that formula for computation of the value V.

Development of a test method and apparatus for passivity of chromium alloys which eliminates the usual sources of error.

In previous research the authors shown that the rate of synthesis affects the yield of radioactive bromine. This rate must vary with the chemical composition of the starting material, ethyl bromide, ethlidene bromide, and bromoform were compared.

The thorium isotope selected for this investigation was UX(1). Previous assumptions that systems of this type form pseudo or anomalous mixed crystals rather than genuine mixed crystals by penetration.

After numerous attempts the author was successful in obtaining, through crystallizations from nitrobenzene, well-formed needles which are susceptible to measurement, even for the first members of the series of the salts of nickel with the glyoximes of the type (DH)2Ni.

The authors give the results of their work towards the development of effective methods for enrichment in light isotopes.

The author reviews briefly the present state of several important problems of the electrochemistry and the chemistry of polonium; the position of this element in the electromotive series, the nature of the ions and the electrolytic deposits which they form, the valences, the nature of the precipitates of Po that is observed in solutions which are feebly acid or feebly alkaline.

Investigations on the case of vaporization of RaD, E, and F in a vacuum were conducted.

In continuation of the x-ray study of Ni-dimethylglyoxime and Ni-methylethylglyoxime, the Patterson xy plane projection is performed, and on the basis of the vectorial values and angles thus calculated a model of molecular structure is proposed which corresponds to the exigency of the crystallographic and physical-chemical property of the examined compounds.

Vaporization studies were made with Po on Au, Pt and Pd supports. It was shown that Po is vaporized at a much higher temperature than from Au and Pt.

The method for studying the electrochemistry of the radioelements has a great advantage which permits the observation of the chemical behaviour of these elements in a continuous and direct manner in a different media and comparison of the different reactions.

The study of the fat soluble compounds of a number of elements is very interesting work especially the salts of camphocarbonic acid.

A method for preparing Po sources by volitilization in a stream of gas.

Experiments on the electrolysis of Po from a NaOH solution reveal a method for determining the sign of the charge on Po ions in this medium.

In syncrystallization experiments it was observed the existence of complexes of polonium which assumes a valence of 3 or 4 according to the case.

The author thought it would be interesting to study the carrying of polonium through partial crystallization, which could be effected by cooling, of an oxalate originally in a nitric acid solution of polonium.