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The Unified Soil Classification System

Description: The purpose of this manual is to describe and explain the use of the "Unified Soil Classification System" in order that identification of soil types will be on a common basis throughout the agencies using this system.
Date: March 1953
Creator: Waterways Experiment Station (U.S.)
Partner: UNT Libraries Government Documents Department

The Unified Soil Classification System, Appendix A: Characteristics of Soil Groups Pertaining to Embankments and Foundations

Description: Report describing various kinds of soils and their characteristics, for use in constructing embankments and foundations: "The major properties of a soil proposed for use in an embankment or foundation that are of concern to the design or construction engineer are its strength, permeability, and consolidation and compaction characteristics. Other features may be investigated for a specific problem, but in general some or all of the properties mentioned above are of primary importance in an earth embankment or foundation project of any magnitude" (p. 1).
Date: March 1953
Creator: Waterways Experiment Station (U.S.)
Partner: UNT Libraries Government Documents Department

Recommended Practices for Establishment and Maintenance of Turf

Description: "The intent of this report is to provide technical and practical information which will be of value to those responsible for preparation, review or accomplishment of specifications for the establishment of vegetative ground cover. [...] The report is concerned primarily with establishment of turf grasses in the continental United States. A brief discussion of maintenance practices is included as such practices have a direct bearing on the successful establishment of the desired ground cover" (p. 1).
Date: April 1953
Creator: Cale, E. B.
Partner: UNT Libraries Government Documents Department

Chemical Evolution and the Origin of Life

Description: The formation of more complex carbon compounds from simple ones through the action of radiation is used in an interpretation of the original formation of such compounds on earth. The relation of plants and animals and evolution of photosynthesis is discussed in the light of the participation of sulfur compounds in the metabolism of both group.
Date: March 10, 1953
Creator: Calvin, Melvin
Partner: UNT Libraries Government Documents Department

Evidence for Subshell at Z = 96

Description: The evidence is decisive that major nuclear shells are completed at 82 protons and 126 neutrons (both represented by the nuclide Pb{sup 208}) and these, along with major shells at 82 neutrons and certain lower nucleon numbers (N or Z = 20, 28, 50), are well explained by the strong spin orbit coupling model of Mayer and Haxel, Jensen, and Suess. This model suggests the filling of quantum states at certain intermediate points, and there is an accumulating amount of evidence that such 'sub shells' are also discernible, for example, at Z = 58 and Z = 64. The evidence from alpha radioactivity, both (1) the effect of the nuclear radius shrinkage on the relationship between energy and half-life and (2) the discontinuities in the plots of energy vs. mass number at constant Z, gives a striking indication of the closing of major shells at Z = 82 and N = 126. Application of these sensitive criteria as tests for the much smaller 'subshell' effects in the regions Z > 82 and N > 126 leads to some evidence for such a subshell at Z = 96 (curium).
Date: September 3, 1953
Creator: Seaborg, Glenn T.
Partner: UNT Libraries Government Documents Department

Elastic Scattering of 190 MEV Deuterons by Protons

Description: The elastic differential scattering cross section of 190 MeV deuterons by protons has been measured from 15 degrees to 170 degrees in the center of mass system. The cross sections were obtained by subtracting the carbon counts from those received with a polyethylene target. Part I presents a description of the experiments. Results are shown in Table IV and Fig. 3. Part II compares these results with those expected from theory by making use of a method developed by Chew. A summary of this comparison is given in Table VII.
Date: June 3, 1953
Creator: Chamberlain, Owen & Stern, Martin O.
Partner: UNT Libraries Government Documents Department

Observations on the Radiation Decomposition of Some C14 LabeledCompounds

Description: Varying amounts of radiation decomposition during storage in the dry form have been found in the cases of C{sup 14}-labeled valine, norvaline, norleucine, choline chloride, calcium glycolate and cholesterol. These data indicate that investigators using labeled organic compounds should make frequent checks of the purity of these compounds in order to exclude the possibility of the presence of decomposition products.
Date: February 27, 1953
Creator: Tolbert, B.M.; Adams, P.T.; Bennett, Edward L.; Hughes, Ann M.; Kirk, Martha R.; Lemmon, R.M. et al.
Partner: UNT Libraries Government Documents Department

Summary - Bevatron Research Meeting II

Description: The operational characteristics of the Cosmotron were reviewed in brief. Since a rather complete account of this machine is now available in the September 1953 issue of Rev. Sci. Inst., this summary will include only the more recent utilization of the machine as a research instrument.
Date: October 13, 1953
Creator: Chamberlain, Owen
Partner: UNT Libraries Government Documents Department

Quadrupole Focusing Lenses for Charged Particles

Description: A set of four strong focusing magnetic quadrupole lenses has been constructed and operated. Each lens consists of four air cooled electromagnets with pole tips having a hyperbolic cross section. Each lens is 4 in. long and has an aperture 2 in. in diameter. Measurements of the magnetic field demonstrate that the hyperbolic cross section satisfies the requirements of a constant magnetic field gradient very well. The technique of deflecting a current carrying flexible wire has been used to measure the trajectory of charged particles through the system of lenses. It has been observed that the strong focusing requirements are satisfied. The system of lenses was then used to focus 0.5 Mev protons, 20 Mev deuterons, and 40 Mev alpha particles. The parallel beam of 0.5 Mev protons was detected by observing the incandescence of a quartz plate while the protons were bombarding it. The focused beam was less than 1 mm in diameter. The astigmatic 20 Mev deuteron beam from the 60 in. cyclotron was increased in current density by a factor greater than 30.
Date: April 15, 1953
Creator: Cork, Bruce & Zajec, Emery
Partner: UNT Libraries Government Documents Department

The Path of Carbon in Photosynthesis. XVIII The Identification ofNucleotide Coenzymes

Description: The radioactive compounds to be observed when algae or green leaves are allowed to photosynthesize in C{sup 14}O{sub 2} for short periods are almost all phosphorylated derivatives of sugars. Of these, phosphate esters of trioses, sedoheptulose and fructose are the first to incorporate C{sup 14} followed closely by ribulose diphosphate, glucose-6-phosphate and a phosphate of mannose. It has been noted, in earlier papers of this series, that on radiograms of the products of photosynthesis, a dark area appeared in a position occupied by no known sugar phosphate and which gave glucose on acid hydrolysis or on treatment with a phosphatase preparation. This has hitherto been referred to as an 'unknown glucose phosphate'. It was found that this substance was more labile to acid than glucose-l-phosphate, itself a readily hydrolysable phosphate, and furthermore that other labile glucose derivatives were formed as intermediates during the acid hydrolysis. Accumulation of labeled glucose in this area precedes that in sucrose and suggests its synthetic relationship to sucrose phosphate synthesis.
Date: January 19, 1953
Creator: Buchanan, J.G.; Lynch, V.H.; Benson, A.A.; Calvin, M. & Bradley,D.F.
Partner: UNT Libraries Government Documents Department

Directing the Movement of Fish with Electricity

Description: From introduction: The Fish and Wildlife Service's Great Lakes Fishery Investigations has recently developed alternating current electrical devices which appear most promising as a means of controlling the parasitic sea lamprey in the Great Lakes.
Date: January 1953
Creator: McLain, Alberton L. & Nielsen, Willis L.
Partner: UNT Libraries Government Documents Department

An Automatic Count and Control System for a Beta-Ray Spectrometer

Description: From abstract: An electromechanical automatic count and control unit for a beta-ray spectrometer is described. The count control unit provides for constant or time limited recording of data and actuates an automatic stepping system which sweeps a well regulated motor generator power supply over 100 increments of focusing magnet current.
Date: 1953
Creator: Olsen, J. L. & O'Kelley, G. D.
Partner: UNT Libraries Government Documents Department

An Automatic Sweep Unit for Single Channel Pulse Height Analyzers

Description: From abstract: A sweep unit for automatic control of single channel pulse height analyzer bias is described. The unit is linear, stable, and compact enough to be included in most single channel pulse height analyzers. Several applications of the sweep unit to scintillation spectroscopy are described.
Date: 1953
Creator: O'Kelley, G. D.
Partner: UNT Libraries Government Documents Department

Neutron Leakage from the 30 Megawatt SGR-P4 Reactor

Description: Abstract: The fast and thermal neutron leakage from the 30 megawatt SGR-P4 reactor has been studied by three independent methods.
Date: August 21, 1953
Creator: Fillmore, F. L.
Partner: UNT Libraries Government Documents Department

Uranium Production: Process Designs for Leached Zone Plants

Description: Introduction: This volume is the second in a series of reports dealing with the recovery of uranium, alumina, and phosphatic values from the leached zone portion of he Florida phosphate producing area.
Date: April 1953
Creator: Piros, R. J.; McCullough, R. F. & Knopf, W. C.
Partner: UNT Libraries Government Documents Department

Uranium Production: Process Designs for Leached Zone Plants

Description: Summary: Process design and cost estimates for the digestion, leaching and filtration steps of plants which produce 450, 225, and 100 tons of uranium per year are presented in this report.
Date: July 1953
Creator: Clements, D. F. & McCullough, R. F.
Partner: UNT Libraries Government Documents Department

Primary Sedimentary Trend Indicators as Applied to Ore Finding in the Carrizo Mountains, Arizona and New Mexico

Description: Abstract: Field and laboratory study of primary sedimentary features of the Salt Wash sandstone was undertaken to learn if these structures can be of use in finding hidden deposits of ore and also if they have influenced the localization of either individual ore deposits or larger mineralized districts.
Date: August 1953
Creator: Stokes, William Lee
Partner: UNT Libraries Government Documents Department

Fracture Pattern of the Zuni Uplift: Final Report

Description: Abstract: The objectives of this study have been to determine the nature of the major fracture pattern of the Zuni uplift; to analyze this pattern for evidence of the mode of origin of the uplift; and to compare the fracturing in the ore areas with that elsewhere on the uplift to see whether diagnostic features exist hat might make it possible to indicate other favorable areas.
Date: June 1953
Creator: Gilkey, Arthur K.
Partner: UNT Libraries Government Documents Department

Fracture Studies in the Lucero Uplift, New Mexico: Final Report

Description: Objectives: The purpose of this project was to study in detail the factors controlling the formation of fractures and the fracture pattern actually developed in an area transitional between Colorado Plateau and Basin and Range type structures.
Date: December 1953
Creator: Duschatko, Robert W.
Partner: UNT Libraries Government Documents Department

Buffalo Creek Monazite Placer, Cleveland and Lincoln Counties, North Carolina

Description: Introduction: The investigation of monazite deposits in the southeastern states by the Bureau of Mines and the Geological Survey on behalf on the U.S. Atomic Energy Commission was prompted by the history of past production and the many communications reporting the occurrence of monazite in this area.
Date: January 1953
Creator: Griffith, R. F. & Overstreet, William C.
Partner: UNT Libraries Government Documents Department

Reconnaissance in the Western Part of the Trans-Pecos Region of Texas

Description: Abstract: The Trans-Pecos region of southwest Texas is noted for the production of quicksilver, lead, silver, and copper from its several mining districts. Reconnaissance, which was concentrated in and around these districts, revealed many areas of slightly abnormal radioactivity. Only a few areas, however, showed uranium mineralization.
Date: January 23, 1953
Creator: Hadfield, Jonathan P.
Partner: UNT Libraries Government Documents Department

Experimental Simulation of Plateau Type Uranium Deposits

Description: From abstract: Experimental simulation of Colorado Plateau type uranium deposits is divided into seven parts. The first three summarize the essential features of geological occurrence for the ores. The last four parts outline the results of experimental investigation arranged according to each geological group of features influencing mode of occurrence.
Date: January 1953
Creator: Bain, George W.
Partner: UNT Libraries Government Documents Department