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24,533 Matching Results
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Fabrication Cots for Plutonium Fuel Elements Part A: Variable Costs of Fabrication UO2-PuO2 Fuel Rods for the Plutonium Recycle Critical Facility
None
Date:
September 1, 1695
Creator:
Bloomster, C. H.
System:
The UNT Digital Library
Results of a Biological Survey of the San Francisco Mountain Region and Desert of the Little Colorado, Arizona
Brief summary of a biological survey of the Painted Desert, specifically the San Francisco Mountain region, and the Grand Canyon (Cañon).
Date:
September 11, 1890
Creator:
Merriam, C. Hart & Stejneger, Leonhard
System:
The UNT Digital Library
Revision of the Pocket Mice of the Genus Perognathus
Revision of earlier report in this series detailing changes in classification resulting from study of up to 3,000 specimens.
Date:
September 20, 1900
Creator:
Osgood, Wilfred H.
System:
The UNT Digital Library
Natural History of the Queen Charlotte Islands, British Columbia. Natural History of the Cook Inlet Region, Alaska
Results of 1900 expedition on Queen Charlotte Islands describing natural history.
Date:
September 26, 1901
Creator:
Osgood, Wilfred H.
System:
The UNT Digital Library
Texas State Orphan Home Annual Report: 1902
Annual report of the Texas State Orphan Home describing goals, activities, and accomplishments during fiscal year 1902.
Date:
September 1, 1902
Creator:
Texas State Orphan Home
System:
The Portal to Texas History
Revision of the Spiny Pocket Mice: (Genera Heteromys and Liomys)
From introduction: "Result of a study of the spiny pocket mice in the collection of the Biological Survey, now numbering nearly 1,000 specimens, supplemented by about 130 in the United States National Museum and from various sources."
Date:
September 7, 1911
Creator:
Goldman, Edward A.
System:
The UNT Digital Library
Fuel-Briquetting Investigations, July, 1904, to July, 1912
Report discussing a series of fuel-testing investigations that U.S. Geological Survey began in 1904 for the purpose of analyzing and testing the coals and lignites in the United States in order to determine their fuel values and the most efficient methods of utilizing them for different purposes. Types of tests undertaken included chemical analyses, steaming tests, gas-producer tests, briquetting tests, coking tests, and washing tests of samples collected from the various coals fields of the country. Bulletins presenting the results of these investigations have been periodically published but as supply has run out, the Bureau of Mines has decided to compile the most important facts of these bulletins in one volume along with the results of all other briquetting investigatins undertaken by the government from July 1, 1904, to July 1, 1912.
Date:
September 1913
Creator:
Wright, C. L.
System:
The UNT Digital Library
Metallurgical Coke
Technical paper issued by the Bureau of Mines over studies on metallurgical coke. As stated in the introduction, "in this paper the attempt is made to summarize the history of coke making in the United States, to indicate the development of different methods and the modern types of ovens, and to point out the composition and physical properties of the metallurgical cokes produced in this country" (p. 5). This paper includes tables, illustrations, photographs, and a map.
Date:
September 1913
Creator:
Belden, A. W.
System:
The UNT Digital Library
Life Zones and Crop Zones of New Mexico
Discusses geography, climate, agricultural practices, and crops of each life zone in New Mexico. Provides mammal, breeding bird, reptile, amphibian, and plant species list for each zone. Includes a life zone map.
Date:
September 5, 1913
Creator:
Bailey, Vernon
System:
The UNT Digital Library
A Reconnaissance in Palo Pinto County, Texas : With Special Reference to Oil and Gas
This document reports the presence of oil and gas in Palo Pinto County, Texas, as studied by the United States Geological Survey in the fall of 1914.
Date:
September 11, 1915
Creator:
Wegemann, Carroll H.
System:
The UNT Digital Library
A Review of the American Moles
Discusses habits; economic status; characteristics and development of young; pelages and molts; and geographic, individual, sexual, and age variation. Describes subfamilies, history, and generic names of the family Talpidae. Describes, lists locations, and provides a key for genera, species and subspecies.
Date:
September 30, 1915
Creator:
Jackson, Hartley H. T.
System:
The UNT Digital Library
Prospecting and Mining of Copper Ore at Santa Rita, New Mexico
Report discussing techniques for the mining of large masses of low-grade ores such as though found in Santa Rita, NM. It is hoped that a study of the methods used at Santa Rita will help engineers in other industries who may have to handle large masses of material.
Date:
September 1916
Creator:
MacDonald, Donald F. & Enzian, Charles
System:
The UNT Digital Library
An Introduction to the Laws of Air Resistance of Aerofoils
Report presents methods of calculating air resistance of airfoils under certain conditions of flow phenomena around the airfoil.
Date:
September 1918
Creator:
de Bothezat, George
System:
The UNT Digital Library
The Rice Rats of North America (Genus Oryzomys)
Discusses habits, economic status, morphology, variation, history, and specimens of North American rice rats. Provides a key and descriptions for species and subspecies.
Date:
September 23, 1918
Creator:
Goldman, Edward A.
System:
The UNT Digital Library
Biennial Report of the Texas State Library: 1918-1920
Biennial report of the Texas State Library for the years 1918-1920, including the budget and summaries of the library's activities.
Date:
September 1, 1920
Creator:
Texas State Library
System:
The Portal to Texas History
Drag or Negative Traction of Geared-Down Supporting Propellers in the Downward Vertical Glide of a Helicopter
Discussed here are computations of drag or negative traction of geared down supporting propellers in the downward vertical glide of a helicopter. By means of Frounde's Theory, the maximum value of the drag of a windmill is calculated. For wooden propellers, the author finds that the difference between the drag and the weight is proportional to the number of blades and is larger for propellers of small diameter; thus it is 25 kg. for a six blade propeller with a diameter of 2 m. 50.
Date:
September 1920
Creator:
Toussaint, A.
System:
The UNT Digital Library
The Dynamometer Hub
The construction of the dynamometer hub is illustrated and explained, and its electrical and aviation motor tests, as well as those in free flight, described.
Date:
September 1920
Creator:
Stieber, W.
System:
The UNT Digital Library
Experience With Geared Propeller Drives for Aviation Engines
An overview is given of experience with geared propeller drives for aviation engines. The development of gear wheels is discussed with emphasis upon bending stresses, compressive stresses, heating, and precision in manufacturing. With respect to the general arrangement of gear drives for airplanes, some principal rules of mechanical engineering that apply with special force are noted.
Date:
September 1920
Creator:
Kutzbach, K.
System:
The UNT Digital Library
Recent Efforts and Experiments in the Construction of Aviation Engines
It became evident during World War I that ever-increasing demands were being placed on the mean power of aircraft engines as a result of the increased on board equipment and the demands of aerial combat. The need was for increased climbing efficiency and climbing speed. The response to these demands has been in terms of lightweight construction and the adaptation of the aircraft engine to the requirements of its use.
Date:
September 1920
Creator:
Schwager, [Otto]
System:
The UNT Digital Library
The 1000 HP Traffic Airplane of the Zeppelin Works in Staaken
Report details the characteristics and advantages of the swift traffic airplane constructed by Zeppelin Works at Staaken. The maximum speed, weight, construction, layout, and landing capabilities of the plane are included.
Date:
September 1921
Creator:
Rohrbach, A. K.
System:
The UNT Digital Library
Competition for Safety Fuel Tanks
Report describing a competition for safety fuel tanks, including the prizes, requirements that must be fulfilled, some other characteristics, tests, and regulations.
Date:
September 1921
Creator:
unknown
System:
The UNT Digital Library
The Effect of Staggering a Biplane
This investigation was carried out by request of the United States Air Service at the Massachusetts Institute of Technology wind tunnel in 1918. As the data collected may be of general interest, they are published here by the National Advisory Committee for Aeronautics. The lift, drag, and center of pressure travel are determined for a biplane with a stagger varying from +100% to -100%. It is found that the efficiency and the maximum lift increase with positive stagger.
Date:
September 1921
Creator:
Norton, F. H.
System:
The UNT Digital Library
Glossary of Terms Used in Flying Boat Hull Construction
Memorandum presenting a glossary of terms used to describe flying boat hulls and the elements used in construction.
Date:
September 1921
Creator:
Nicolson, David
System:
The UNT Digital Library
Lift Theory of Supporting Surfaces: Second Article
Memorandum presenting a description of the hydrodynamic lift theory of supporting services. This report is mainly about the task of finding suitable wing sections for given lift conditions. Formulas are given for lift magnitude and moment, which make it possible to obtain solutions of great simplicity and clearness.
Date:
September 1921
Creator:
von Mises, R.
System:
The UNT Digital Library