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19,303 Matching Results
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Icing-Protection Requirements for Reciprocating-Engine Induction Systems
Report presenting an investigation of the icing of aircraft-engine induction systems. Criterions for safe operation and for the design of new induction system are established through the investigation. The results were obtained from laboratory investigations of carburetor-supercharger combinations, wind-tunnel investigations of air scoops, multicylinder-engine studies, and flight investigations.
Date:
1950
Creator:
Coles, Willard D.; Rollin, Vern G. & Mulholland, Donald R.
System:
The UNT Digital Library
Information on the Prevention of Quarry Accidents
From Introduction: "The primary objective of this paper is to discuss the hazards and furnish a list of recommendations for the safe operation of the quarries and related works. The second objective is to describe and illustrate safety devices, practices, and quarrying methods."
Date:
1950
Creator:
Harrington, D.; Worcester, A. W. & East, J. H., Jr.
System:
The UNT Digital Library
Inundated Anthracite Reserves: Eastern Middle Field of Pennsylvania
From Scope of Report: "In this report one major unwatering project was developed. Three pools that inundate considerable tonnages of anthracite reserves are close enough together to be unwatered by some centralized system. Three alternative plans were studied to estimate the cost of each."
Date:
1950
Creator:
Ash, S. H. (Simon Harry), b. 1889; Kynor, H. D.; Fatzinger, R. W.; Davies, B. S. & Gilbert, J. C.
System:
The UNT Digital Library
Investigation of a NACA high-speed strain-gage torquemeter
Report presenting an investigation of a strain-gage torquemeter employing a circuit to minimize effects of contact resistance, which was evaluated under static and dynamic conditions. Effects of temperature, axial stress, slip-ring contact resistance, and speed on the operation of the torquemeter were investigated. Results regarding the torsion-shaft static calibration, axial-stress effects, and dynamic operation are provided.
Date:
January 1950
Creator:
Rebeske, John J., Jr.
System:
The UNT Digital Library
An Investigation of the Longitudinal Characteristics of the MX-656 Configuration Using Rocket-Propelled Models Preliminary Results at Mach Numbers from 0.65 to 1.25
"A rocket-propelled model of the MX-656 configuration has been flown through the Mach number range from 0.65 to 1.25. An analysis of the response of the model to rapid deflections of the horizontal tail gave information on the lift, drag, longitudinal stability and control, and longitudinal-trim change. The lift-coefficient range covered by the test was from -0.2 to 0,3 throughout most of the Mach number range" (p. 1).
Date:
1950
Creator:
Mitchell, Jesse L. & Peck, Robert F.
System:
The UNT Digital Library
Investigation of the Tem Piute Tungsten Deposit, Lincoln County, Nevada
Report issued by the Bureau of Mines over studies of the Tem Piute tungsten deposits. The physical features, geology, and mining methods are presented. This report includes maps, charts, and illustrations.
Date:
January 1950
Creator:
Binyon, Eugene O.; Holmes, G. H., Jr. & Johnson, A. C.
System:
The UNT Digital Library
The Isosynthesis
From Preface: "The paper contains data on the development of the catalyst for the isosynthesis, on the effect of temperature and pressure of operation, and on the composition of the products of the reaction. In the last section, experimental evidence and speculations concerning the mechanisms of the isosynthesis are discussed."
Date:
1950
Creator:
Pichler, Helmut & Ziesecke, Karl-Heinz
System:
The UNT Digital Library
Linearized Supersonic Theory of Conical Wings
Report presenting the theory of conical flow and its application to conical aircraft wings. Following an explanation of the theory, several types of wings are analyzed and compared with each other.
Date:
January 1950
Creator:
Lagerstrom, P. A.
System:
The UNT Digital Library
The load distribution due to sideslip on triangular, trapezoidal, and related plan forms in supersonic flow
"Expressions are presented for the load distribution on a representative group of plan forms in sideslip at supersonic speeds. These expressions were obtained by the application of lifting-surface theories based on the linearized equation for compressible flow. Sketches of the load distributions are included" (p. 1).
Date:
January 1950
Creator:
Jones, Arthur L. & Alksne, Alberta
System:
The UNT Digital Library
Magnesite Deposits of Central Ceará, Brazil
From introduction: The purpose of this study was to investigate the quantity and quality of [Central Ceara, Brazil] magnesite, and the writer concludes that this group of deposits constitutes one of the major reserves of high-grade magnesite in the Western Hemisphere. The ore could be used in the production of any commercial grade of magnesia with little or no beneficiation. Soil and alluvial overburden is thin between widespread outcrops, so all the deposits could be mined from open pits.
Date:
1950
Creator:
Bodenlos, Alfred J.
System:
The UNT Digital Library
Magnetic Surveys in the Iron Springs District: Iron County, Utah
Report issued by the Bureau of Mines over magnetometer surveys conducted on iron deposits in Utah. Details of the deposits included in the survey are listed. The methods of testing each deposit are also presented. This report includes tables, maps, photographs, and illustrations.
Date:
January 1950
Creator:
Cook, Kenneth L.
System:
The UNT Digital Library
Method for determining the frequency-response characteristics of an element or system from the system transient output response to a known input function
"A method is presented for the determination of the frequency-response characteristics of an element or system by utilizing the transient output response to a known but arbitrary input to the system. Since the application of special inputs, such as step functions or sinusoids, is often imperfect or impractical, a method for utilizing arbitrary inputs is desirable. Simple flight-test data may be reduced by this method to give the frequency response of an aircraft" (p. 1).
Date:
1950
Creator:
Curfman, Howard J., Jr. & Gardiner, Robert A.
System:
The UNT Digital Library
Mines and Mineral Deposits (Except Fuels) Fergus County, Montana
Report issued by the U.S. Bureau of Mines discussing the mining procedures and minerals of Fergus County, Montana. History, geology, and mineral production of the Fergus County mines are presented. This report includes tables, and maps.
Date:
January 1950
Creator:
Robertson, Almon F.
System:
The UNT Digital Library
Mines and Mineral Deposits (Except Fuels) Meagher County, Montana
Report issued by the U.S. Bureau of Mines discussing the mining procedures and minerals of Meagher County, Montana. History, geology, and mineral production of the Meagher County mines are presented. This report includes tables, and maps.
Date:
January 1950
Creator:
Roby, Robert N.
System:
The UNT Digital Library
Mining Methods and Practices at the Iron King Mine, Shattuck-Denn Mining Corporation, Yavapai County, Arizona
Report issued by the U.S. Bureau of Mines discussing mining methods in Arizona mines. As stated in the introduction, "this paper describes mining operations at the Iron King mine of the Shattuck-Denn Mining Corp. in Yavapai County, Ariz." (p. 2). This report includes tables, maps, illustrations, and photographs.
Date:
January 1950
Creator:
Kumke, Charles A. & Mille, H. F.
System:
The UNT Digital Library
Mound Laboratory Biological Research Section Quarterly Report: October-December 1949
A report about A report about the effects of polonium upon the breeding and fecundity of sprague-dawley rats
Date:
1950/1951
Creator:
unknown
System:
The UNT Digital Library
Mound Laboratory Report for Biological Research: June-September 1951
A report about the effects of repeated polonium injections which have been under investigation by this laboratory to provide background information for future experiments and to provide experimental conditions that more closely simulate working hazards.
Date:
1950/1951
Creator:
Davis, R. K. & Rockhold, W. T.
System:
The UNT Digital Library
Mound Laboratory Report for Biological Research: March-June 1951
A report about the importance of undertaking studies of the effects of repeated, intravenous polonium injections upon laboratory animals.
Date:
1950/1951
Creator:
Davis, R. K.; Rockhold, W. T.; Cowden, R. N.; Talley, L. H.; Glass, P. K.; Morris, G. L. et al.
System:
The UNT Digital Library
Mound Laboratory Report for Biological Research: November 1950-March 1951
A report about the level of polonium in blood of rats injected with 7.4 microcuries of polonium per kilograms of body weight that was followed for more than eight months.
Date:
1950/1951
Creator:
unknown
System:
The UNT Digital Library
Mound Laboratory Report for Biological Research: September-December 1951
A report about an experiment designed to determine the physiological effects of 10 biweekly injections of polonium in adult Sprague-Dawley rats of both sexes.
Date:
1950/1951
Creator:
Davis, R. K.
System:
The UNT Digital Library
National Bureau of Standards Progress Report to the Atomic Energy Commission: July 1, 1950 to September 30, 1950
Report discussing the progress made on a research project during the period from July 1, 1950 to September 30, 1950. The objective of the research project was to develop a Zamboni type pile suitable for the requirements of the equipment in the National Bureau of Standards laboratories.
Date:
1950~
Creator:
United States. National Bureau of Standards.
System:
The UNT Digital Library
Report of the Thirty-Fifth National Conference on Weights and Measures, 1950
Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.
Date:
1950
Creator:
United States. National Bureau of Standards.
System:
The UNT Digital Library
The Nitrogen Mustards : A Review
The following report analyzes the nitrogen mustard found in mustard gas.
Date:
1950
Creator:
DeLong, C. W.
System:
The UNT Digital Library
No⁹⁹, Ag¹¹¹ and Ba¹⁴⁰ Yields from Proton Induced Fission
The following report investigates nobelium, silver and barium yields from proton induced fission by using uranium samples to measure bombardment in the cyclotron.
Date:
1950
Creator:
Jones, W. H. & Fowler, J. L.
System:
The UNT Digital Library