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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
6.70 EV Resonance in U²³⁸
"Using the Brookhaven fast chopper, transmission curves were obtained for the 6.70 +/- .06 ev resonance in U238 using four different thicknesses of natural uranium metal." The measurements for the transmission curves are summarized in the table provided.
Date:
November 9, 1953
Creator:
Levin, Jules S.
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
100-Ton Test : Measurement of the Velocity of Sound
Abstract: The velocity of sound at the time of 100-ton shot at Trinity was measured to be 1116.1 ft/sec. Values of blast pressure computed from the excess velocity are given, but are not considered as reliable.
Date:
June 15, 1945
Creator:
Barschall, H. H. & Martin, G.
Object Type:
Report
System:
The UNT Digital Library
300-KV Pulser Transformer and Pulser.
Photographs and working drawings are presented for a small (approximately 4.25 X 7 X 9 inch) 300Kv pulse transformer having double-conical secondaries each with a corona ring at its greatest diameter. The pulser circuit is shown but no text is included.
Date:
November 1951
Creator:
Heller, R. E.
Object Type:
Report
System:
The UNT Digital Library
568 Report
Final report for a grant contract documenting information about the scope of the project and results.
Date:
1960
Creator:
Pollard, Ernest C. (Ernest Charles), 1906-1997
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
1A Reactor Inlet Hydraulic Valve Position Detector Temperature. Section I. Core I, Seed 1. Test Results DL-S-258-S, RNI-3
The purpose of the test was to determine the internal temperature of the valve position detector for the 1A reactor inlet hydraulic valve with the plant at normal pressure and temperature and at power. The normal operating temperatures for the valve position detector on the 1A reactor inlet hydraulic valve range from a minimum of 287 F to a maximum of 294.7 F.
Date:
November 20, 1959
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
ABCC-NIH Adult Health Study Hiroshima 1958-60. Cardiovascular Project Report Number 6, Heart Size Norm
Data on 13,000 person 15 yr of age or older obtained during detailed clinical examinations, including radiological recorded heart size, were correlated with sex, age, height, and weight of subjects to arrive at a standard heart size for Hiroshima residents This information will be used in investigations cardiovascular disease in the population.
Date:
1964
Creator:
Ueda, Shoichi; Russell, Walter J. & Yano, Katsuhiko
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
Abrasive Blasting for Cleaning Parts
Abstract: A demonstration on August 22, 1945, showed that Alpha or Beta M or K parts, including insulators, can be well cleaned with a pressure-feed abrasive blaster. The abrasive is a slurry of alumina and water mixed with high velocity air in a special feed nozzle. The slurry is continuously recycled.
Date:
September 1945
Creator:
McWherter, Jack R. & Yerazunis, Stephen
Object Type:
Report
System:
The UNT Digital Library
Abrasive Cutting of Irradiated Uranium
The preparation of radioactive metallurgical specimens for microscopic examination is one of the responsibilities of the Radiometallurgy Sub-Unit. An abrasive cut-off machine development program, based upon a previous experimental model, was undertaken to provide a method for sectioning of irradiated materials without undue personnel exposure or spread of contamination and finally to provide data for the design of an abrasive cutting unit for use in the work cells in the Radiometallurgy Building. A horizontal-feed type set-off machine, powered by a 7 1/2 hp motor with V-belt drive, has been developed for the submerged sectioning of irradiated uranium and is currently being used successfully to obtain samples for metallurgical, chemical and physical investigations without excessive personnel exposure or spread of radioactive contaminates.
Date:
September 17, 1953
Creator:
Boyd, Carl L.
Object Type:
Report
System:
The UNT Digital Library
The Absolute Abundance of the Chromium Isotopes in Some Secondary Minerals
From abstract: "Isotopic assays have been made on the chromium in samples from fourteen different chrominiferous minerals from different geographic and meteoritic sources. The results of the assays indicate that it is not possible to unequivocally state that variations in isotopic compositions have been observed."
Date:
1962
Creator:
Svec, Harry J. (Harry John), 1918-; Flesch, G. D. & Capellen, J.
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
The Absorption of Fluorine and Uranium Hexafluoride by Sodium Carbonate Solutions
From introduction: Complete removal of fluorine iron waste gases also containing uranium hexaflouride was the object of researches described in this chapter.
Date:
1946
Creator:
Joris, George G. & Compton, Charles D.
Object Type:
Report
System:
The UNT Digital Library
Absorption of Organic Acids on Thoria
The adsorption of acetic and oleic acids on the surface of thoria was studied by means of infrared spectroscopy. An infrared analysis of the adsorbates before and after adsorption using differential double bean methods indicated that the adsorption of organic acids on thoria surfaces occurs by an esterification reaction between the organic acid and the hydroxylated thoria surface. Ammonia vapor will not adsorb on thoria, indicated the basic character of the hydroxylated surface.
Date:
December 31, 1959
Creator:
Bradford, Harold R. & Wadsworth, Milton E.
Object Type:
Report
System:
The UNT Digital Library