Technical Report Archive & Image Library (TRAIL) - 228 Matching Results
Search Results
- 5.6 Mass Spectrographs
- In recent years German physicists have been making increasing use of both mass spectrographs in the stricter sense and mass spectrometers which can only measure elative isotopic abundances and use electrical methods of measurement.
- #85-Classical Model of a Light Source
- Using classical concepts, the author establishes a model of a luminescence atom or molecule.
- 1950 Plans of the Academy of Sciences USSR
- On 14 November 1949, The General Assembly of the Academy of Sciences USSR met in the academy's Conference Hall to discuss the 1950 plans of the Academy
- About an Intense-Light, Silent Discharge Tube for the Spectroscopic Examination of Small Amounts of Substances
- One of the problems in the spectrographic investigation of the atomic nucleus is to increase the efficiency of the source of light used for the investigation. Using new procedures outlined in the article new elements may be detected through nuclear change.
- About the Black Oxides of Praseodymium
- The authors describe Praseodymium which is a rare earths metal that forms several oxides.
- About the Electrolytic Production of Dichloroethylene
- The information about electrolytic representation of dichloroethylene is presented in this study.
- About the Importance of Unstable Peroxides of Green Leaf of Plant for Photosynthesis
- A. N. Back expressed a hypothesis about the participation of organic peroxide in the process of photosynthesis. Experimental data on this question were very few. This article provides a method of investigation to support the hypothesis.
- About the Model of Bacterial Photosynthesis
- At the base of photosynthesis of green sulfur bacteria lies an oxidation-reduction reaction of transferring hydrogen from hydrogen sulfide to carbon dioxide, accomplished with the participation of light energy. Based on experiments the author concludes that chlorophyll in the process of photosynthesis plays the role of optical sensitizer.
- About Thorium
- The discussion of the preparation and properties of thorium by Werner von Bolton have led the author to make comments regarding its preparation.
- About Thorium
- Dr. H. Karsten responds to a critical review of an earlier article on Thorium originally written by Dr. von Bolton and reviewed by Mr. R. J. Meyer.
- The Absolute Quantitative Determination of Actinium by the Emanation Method
- The paper represents an effort to make a quantitative determination of actinium by the emanation method in a continuous current of air.
- Absorbed Layers as Passivating Factors
- Adsorption passivation of metals is discussed in this paper.
- An Absorption Method for the Extraction of Krypton and Xenon : Part I
- This study has shown the possibility of applying the adsorption method to the separation of krypton and xenon from a concentrate
- Accumulating Effect of Carbon on the Velocity of Diffusion Between Alletropic Alloys and Ferronickel
- The theory of metallic diffusion should be facilitated if the regularity of the lattice is disturbed mechanically, or by means of an alletropic transformation.
- The Action of Nitroeyl Chloride on Alkyl-Malemie Acids as a Method of Obtaining Oximes of e-Keta Acids and e-Amine Acids
- Various Acids are mixed with Oximes to obtain e-Keta Acids and e-Amine Acids.
- The Activation of the Rare Earths by Thermal Neutrons
- Corresponding investigations were carried out for rare earths. Fractional estimates of intensities and rough values of the activation cross sections with thermal neutrons for all earther are listed.
- The Activation of the Rare Earths by Thermal Neutrons
- The present knowledge of artificial radio-activity is more spotty for the rare earths than for any other region of the periodic table. The chief reason for this is the difficulty of obtaining sufficiently pure samples or at any rate such of well-known composition. Rare earthers were investigated through the activation by thermal neutrons.
- An Anode-Channel Source for Positive Ion Beams
- The dependence of the ion output on several variables was studied thoroughly and the point of optimum operatio was determined. Mercury ions were used and certain observed effects were ascribed to the presence of heavier ions.
- The Application of the Nernsty Law of Electro-Chemistry to Extremely Dilute Solutions: The Normal Potentials of Bismuth and Polonium.
- The auth measured the critical cathode potentials, often called the decomposition potentials of the second type, of vary dilute solutions of bismuth nitrate using isotopes of RaE and ThC as radioactive indicators.
- Atomic Energy
- Two chapters taken from the author's book on Atomic Energy which assists the general reader in understanding the many questions around its development.
- Atomic Energy and Medicine
- The physics of rays offered new ways of therapy by high-frequency and ultra-frequent currents. With the discovery of the spontaneous slow radioactive decay of certain elements, a new start was given for the study and the treatment of cancer and other diseases.
- The Behavior of Complex Ions of Po
- 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.
- Calculation of the Lowest Excited Levels of the Naphthalene Molecule
- A given calculation of the lowest energy states of the naphthalene molecule by the method of molecular orbitals with consideration of the non-orthogonality of the wave functions of neighboring atoms.
- The Carrying Down of Polonium by Crystalline Oxalates in Nitric Acid.
- 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.
- Cathode Sputtering Problems
- The question of the nature and charge of the metallic particles emitted in cathode sputtering has been answered experimentally: the particles are primarily neutral atoms. The proof was obtained from the moving particles themselves by a new "spectroscopic method of vapor pressure measurement" in combination with a "vapor pressure measurement from coating density."
- Charge Conjugates for the Invariant Equations of General Relativity
- Using previously published work the authors consider the problem concerning the concept of "charge conjugates."
- Chemical Reactions by Neutron-Capture (Szilard-Chalmers Effect)
- With the energies of nuclear reactions being superior by several orders of magnitude to those of chemical reactions, the nature of the chemical bond can be expected to influence the rate of nuclear reactions in only rare cases. Rather than discuss those chemical reactions the paper focuses on chemical reactions in which the atom under study undergo both nuclear and chemical reactions.
- The Chloride of Praseodymium
- Praseodymium chloride has been prepared in the form of large green crystals. In order to prepare praseodymium oxide in the pure state, the author precipitated the oxalate from a nitric solution instead of a hydrochloric solution.
- Concerning Directed Valences
- Two approaches are well-known for approximate consideration of any problem of the chemical bond, among them the problem of determination of directed valence.
- Concerning the Quenching of the Fluorescence of Chlorophyll and Magnesium Phthalocyanin and the Interaction of These Pigments with the Quenching Substance
- An investigation of the quenching of fluorescence of dyestuffs (pigments) by other molecules will clarify the nature of the photochemical effect exerted by dyestuffs in general and chlorophyll in particular.
- Concerning Valence States of the Carbon Atom
- 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.
- Contraction of Lanthanum and Interatomic Distances
- The author introduces an equation for the calculation of atomic radii of crystalline elements
- Contribution to the Problem Concerning the Surface Conductivity of Solid Dielectrics
- A study was made of the surface conductivity of glass, quartz, mica, nitrofilm, polymers, methyl-metacrylate, styrene, isobutylene, high-molecular paraffin. The conductivity was studies for the purpose of determining the number of ions found on the surface of a dielectric, which is necessary for the study of the iono-heterogeneous catalysis.
- A Contribution to the Study of the Composition of Cements: Galeium, Strontium and Barium Cements
- Since 1931 researchers have attempted to produce new cements using the carbonates of strontium and barium in the form of strontianite and witherite, along with pure kaolin, refractory clays with calcium removed, and bromites free of calcium but rich in iron hydrates.
- Counting Tubes Containing Added Vapor
- 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.
- Crystalline Structure of the Manganous Sulfides and Their Mixed Crystals with Zinc Sulfide and Cadmium Sulfide
- 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.
- The Cyclotron: Disintegration of Matter and Radiobiology
- The construction of a heavy electro-magnet is a well known problem of which the authors will deal only with the methods applicable to the cyclotron.
- Determination of the Diffusion Coefficient in the System: Fe (Y)-H1
- Metallic diffusion may be studies by either direct or indirect methods.
- A Device for Transformation of Nuclear Energy into Another Form of Energy
- 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.
- Diffusion in Solid Metals and its Relationship to Other Properties
- 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.
- The Diffusion of the Impurity Elements in Technical Iron into Solid Iron
- The diffusion of carbon in solid iron has been the subject of numerous investigations over since the middle of the 19th century. Little has been published on the diffusion of the other technically important impurities present in iron. The purpose of this investigation is to help shed light on diffusion phenomena in iron. The work was performed in 1919 at the Metallurgical Institute of the Technische Hochschule in Breslin
- Diffusion Processes Under Conditions of Natural Turbulence
- A short survey of diffusion processes in the atmosphere the coagulation of aerosol particles, the evaporation thereof and the evaporation of droplets from the view point that isotropic turbulence in involved.
- The Dissociation Equilibrium of Ferrous-Nitric Oxide Salts
- In an earlier publication the author described experiments on the fixation of nitric oxide by ferrous salts. The author has improved his experimental technique in a review of his previous results.
- The Distribution of Energy at the Cathode of a Glow Discharge
- The anodes of a mercury vapor rectifier are the cathodes for the current in the so-called "non-conducting direction." If the voltage is sufficient, a glow discharge occurs in the on-conducting direction. It is of considerable practical importance to know how much energy this glow discharge carries over to the cathodes.
- The Distribution of Energy at the Cathode of a Glow Discharge (addendum)
- For many purposes it is desirable to know the amount of energy absorbed by a plane cathode of larger area at room temperature when a glow discharge,
- Distribution of Nuclear Fissions Close to Large Showers of Heavy Particles
- A chart was compiled of the fissions found in a 1.44 square millimeter area. This permitted a more detailed study of the angular distribution and the dependence of the number of fissions on the distance from the shower center.
- Distribution of Radium Between Crystals and Solution of Sparingly Soluble Salts
- Earlier investigations have established that distribution of radioactive elements between crystals and solution of isomorphous salts occurs when the composition of both phases remains contact and true equilibrium is established between the solid and liquid phases. The applicability has been demonstrated on a series of salts, but experimental data has pertained only to soluble salts. The artlcle checks the relations experimentally for the case of sparingly soluble salts.
- The Distribution of Thorium Isotopes Between Lanthanum Fluoride Crystals and Their Saturated Solution in 3 and 12 Percent HMO(3) at a Temperature of 100 Degrees
- 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.
- The Effect of High Electrolyte Concentrations on the Deposition Potential of Po.
- The authors have observed that in strong sulfuric acid solutions the critical potential is displaced considerably to a more negative value.
- An Electrocapillary Softening Effect in Metals
- It appeared of interest to investigate the functional relationship which the authors observed between the hardness and the difference of potential for various pure metals over a fairly wide range of potentials, including the electrocapillary maxima.