The principle of homogeneity among elements through mathematical possibilities is discussed.

By means of experiment the author attempts to determine the production mechanisms and the various histopathological types involved.

The theory of metallic diffusion should be facilitated if the regularity of the lattice is disturbed mechanically, or by means of an alletropic transformation.

Thermomagnetic methods are applied to multilayer aggregates, alternating bounded layers of two solid solutions, which affords a sensitive means of following the programs of homogenization by means of successive changes in the magnetization-temperature curve.

Experiments with second sound have revealed its extraordinarily high stability. In order to achieve even higher amplitudes of oscillation, an apparatus was prepared as illustrated in Figure 1.

The study of metallic diffusion in the solid state is a matter of determining the concentration of a solid solution as a function of time and temperature.

The present invention is based on the following discovery's : fast and thermal neutrons, absorbed by uranium, cause a breaking of an uranium moleus into large pieces.

Earlier articles by the author demonstrate that beryllium oxide can be reduced in other ways than previously known. Using a combination of alkaline earth metals, temperature or pressure, the reduction of bellyillium oxide achieves reduction.

Because of the great experimental difficulties involved, binary water-salt systems have seldom been investigated at temperatures about 100 degrees.

In connection with experiments on the adsorption of noble gases, it is shown that it is possible, by making a few measurements, to determine the conditions under which gases and vapors can be quantitatively separated by adsorption on active charcoal, followed by desorption.

The effectiveness of the Zr/Hf separation by distribution has been compared with data of yields using other methods.

The authors investigations of diffusion lead having been more or less concluded, it seemed desirable that similar series of tests be carried out on other metals. This paper will describe experiments on the diffusion of cadmium, indium, tin antimony and copper into silver.

Oscillograms are used to show the time variation of the discharge in ordinary (air or argon-filled) counting tubes, and to show the decisive effect of small admixtures of other gases on the discharge. Various vapors are investigated for use in counting tubes. Hints for the construction of counting tubes are given; the nature and cause of the temperature effect in counting tubes is discussed briefly.

Previous observations by the authors on the radiation emitted by argon ions in the positive column of the glow discharge at high current have been extended to the radiation of neon ions. As the discharge current is increased, the difference between the energy of the atoms and the ions decreases, the velocity distribution function of the ions is markedly asymmetrical, there being a preferred direction of motion paralled to the direction of the electric field

An experimental study has been made of the displacement of the lines of ionized argon in the plasma of the positive column. It has been verified that this displacement is a Doppler broadening due to the translational motion of the ions in the direction of the field.

A study is made of the inelastic collision of slow neutrons with ferromagnetic substances at low temperatures. Such collisions are government by the excitation and adsorption of spin waves in the ferromagnetic materials by the neutrons.

Formulas are derived for determining the refractive index of ordinary crystals and magnetized substances (ferromagnetic and paramagnetic) for slow neutrons.

The local energy levels of NaC1, KC1 and KBr crystals which have been irradiated with x-rays at low temperatures are studied by measuring their thermoluminescence in the ultra-violet and visible regions.

Using a Fabry-Feret interferometer, the spectral line profiles are studied for both ions and neutral atoms of argon in their dependence on the strength of the discharge current and the gas pressure.

An attempt is made to investigate the principles of a general classification of the existing apparatus, which could facilitate a rational choice of a meet appropriate system and of the best conditions of work.

Preparation of green and red manganous sulfide. Investigation of x-ray properties. Formation of mixed crystals with cadmium and zinc sulfides. Formation of manganese disulfide.

Soviet power engineers have often been faced with the task of operating a power plant based on a binary mercury-water cycle. In connection with the problem the Binary Cycle Laboratory has undertaken investigations in heat exchange into non-boiling and boiling mercury.

A description of the first qualitative experiments to determine the velocity of a photochemical reaction as a function of the temperature of a mixture of hydrogen and oxygen at relative low pressures.

By means of a very careful analysis of the photochemical reaction in equilibrium, it is shown that near the critical points of ignition of 2H2+O2 the displacement of the ignition region under the influence of ultra-violet irradiation is not connected with spontaneous heat ignition of the mixture.