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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.
Date:
unknown
Creator:
Evald, H. & Marschall, H.
Object Type:
Report
System:
The UNT Digital Library
#85-Classical Model of a Light Source
Using classical concepts, the author establishes a model of a luminescence atom or molecule.
Date:
January 1, 1933
Creator:
Born, Max, 1882-1970
Object Type:
Report
System:
The UNT Digital Library
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
Date:
February 1950
Creator:
The General Assembly of the Academy of Sciences USSR
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
January 5, 1935
Creator:
Schuler, H. & Gollnow, H.
Object Type:
Report
System:
The UNT Digital Library
About the Black Oxides of Praseodymium
The authors describe Praseodymium which is a rare earths metal that forms several oxides.
Date:
1925
Creator:
Prandtl, Wilhelm & Huttner, Karl
Object Type:
Report
System:
The UNT Digital Library
About the Electrolytic Production of Dichloroethylene
The information about electrolytic representation of dichloroethylene is presented in this study.
Date:
1909
Creator:
Askenasy, P. & Vogelsohn, C.
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
1949
Creator:
Kuzin, Aleksandr Mikhaĭlovich & Shkolnik, P. J.
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
January 27, 1949
Creator:
Maximov, N. A.
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
1908
Creator:
Meyer, R. J.
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
1909
Creator:
Karstens, H.
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
unknown
Creator:
Baranov, V. I.
Object Type:
Report
System:
The UNT Digital Library
Absorbed Layers as Passivating Factors
Adsorption passivation of metals is discussed in this paper.
Date:
January 17, 1947
Creator:
Koshurnikov, G. S.
Object Type:
Report
System:
The UNT Digital Library
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
Date:
March 19, 1939
Creator:
Fastovskiy, V. G.
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
1943
Creator:
Chevenard, Pierre & Wache, Xavier
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
1941
Creator:
Omishenko, A. S.
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
1946
Creator:
Bothe, W. q (Walther), d 1891-1957
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
1946
Creator:
Bothe, W., (Walther). 1891-1957
Object Type:
Report
System:
The UNT Digital Library
Activity Build-Up Control by High pH Coolant : A Literature Survey
A survey was made of unclassified literature dealing with the control of activity buildup in pressurized water reactors by high pH coolants
Date:
January 23, 1961
Creator:
Bergen, C. R.
Object Type:
Report
System:
The UNT Digital Library
Acute Radiotoxicity of (BA-LA)140 in Rats and Mice : Part I. Preparation and Administration of the Emitters
Barium 140 and its daughter, lanthanum 140, were obtained from uranium fission. The composition of the solutions used in animal studies is given a procedure for delivering toxic doses to small animals and methods for preparing animal tissues for radioactivity measurements are described.
Date:
July 25, 1947
Creator:
Finkle, R.; Snyder, R. & Tompkins, P.
Object Type:
Report
System:
The UNT Digital Library
Acute Radiotoxicity of (Ha-La)140 for Rats and Mice. Part III. Effects of Height and Food Intake of Animals Treated with (Ha-La)140
In the (Ha-La)140 experiments mice and rats were injected intraperitonially with toxic doses of radiobarium. The weight curves indicate that there was definite retardation of growth in mice and 2.25 uc/g and in rats at 1.98 uc/g.
Date:
June 24, 1947
Creator:
Snyder, R. H.; Sacher, G. A. & Teresi, J. D.
Object Type:
Report
System:
The UNT Digital Library
Additional Measurements on the Army Package Power Reactor Zero Power Experiments ZPE-1 and ZPE-2
During the course of the ZPE-2 experimental program additional measurements were performed such as the evaluation of various absorber section compositions and reactivity studies designed to facilitate analytical techniques
Date:
November 15, 1957
Creator:
Giesler, H. W.
Object Type:
Report
System:
The UNT Digital Library
Alternating Current Polarography: Evaluation of the Accuracy of the Data and Calculation Procedures
"The data obtained by a-c polarography, when used to determine electrode parameters such as heterogeneous rate constant and when used as an analytical tool, are evaluated. Certain aspects of the experimental approach both in measurement and calculation are reviewed. The importance and means of correcting for the series resistance of the cell system itself and of using equations which take into account the phase differences between the faradaic and capacitive currents are developed. Other topics reviewed include the nature of the dependence of the peak a-c on depolarizer concentration, effect of adsorption of depolarizer and electrode, and a simplified procedure for quantitative analysis."
Date:
July 23, 1958
Creator:
Bauer, Henry H. & Elving, Philip J.
Object Type:
Report
System:
The UNT Digital Library
Analysis of Primary System Blowdown by Rupture Disc Failure
The purpose of this study is to determine the time required for blowdown of the primary system when the rupture disc fails, and the effect of blowdown on the control rods during scram.
Date:
January 27, 1956
Creator:
Johnson, Carl G.
Object Type:
Report
System:
The UNT Digital Library
Annual Report ONR Project A-2049
"The objective of this program is to conduct a broad basic program of analytical and experimental research into the fundamental behavior of gas- lubricated bearings and to establish general design criteria for these bearings. The work to date has included both theoretical and experimental phases of hydrodynamic and hydrostatic lubrication phenomena, supplemented by a digital computer program."
Date:
July 15, 1958
Creator:
Fuller, Dudley D.
Object Type:
Report
System:
The UNT Digital Library