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Wheat smuts and their control.

Description: Describes the characteristics of three types of wheat smut in the United States and methods of control.
Date: February 1938
Creator: Leukel, R. W.; Faris, J. A., d. 1933.; Tapke, V. F. & Rodenhiser, H. A.
Partner: UNT Libraries Government Documents Department

Dwarf Fruits.

Description: Describes methods for propagating dwarf fruit trees, and the steps necessary to maintain them.
Date: February 1939
Creator: Gould, H. P.
Partner: UNT Libraries Government Documents Department

The Native Papaw.

Description: Describes the characteristics, culture, and uses of the native pawpaw, a little-known fruit.
Date: February 1939
Creator: Gould, H. P.
Partner: UNT Libraries Government Documents Department

Cleaning milking machines.

Description: Provides instructions for cleaning mechanical milking machines in order to prevent bacterial contamination.
Date: February 1939
Creator: Burgwald, L. H. (Louis Henry), 1892- & Grant, Fred M.
Partner: UNT Libraries Government Documents Department

Bean Bacterial Wilt.

Description: Describes the signs that beans are infected with bacterial wilt, the history of the disease, where it most often occurs, and the steps that can be taken to control it.
Date: February 1939
Creator: Hedges, Florence
Partner: UNT Libraries Government Documents Department

Production of Parsnips.

Description: A guide to growing, harvesting, and storing parsnips.
Date: February 1938
Creator: Beattie, James H. (James Herbert), b. 1882 & Beattie, W. R. (William Renwick), b. 1870
Partner: UNT Libraries Government Documents Department

Date Growing in the United States.

Description: Describes the varieties of dates grown in the United States. Provides recommendations for growing dates and controlling the diseases and pests that affect them.
Date: February 1939
Creator: Nixon, Roy W. (Roy Wesley), b. 1895 & Moore, Dewey Chester, 1901-
Partner: UNT Libraries Government Documents Department

[Elizabeth Simpson Cooper Memoir]

Description: Photocopy of Elizabeth Simpson Cooper's memoir about her childhood in Virginia and later her time in Kansas after moving westward with her family. In the text of her memoir, she describes her school days in Virginia, church, Cooper family history, "Bleeding Kansas" (the period of conflict over deciding if Kansas would be a free or a slave state), and the Civil War in Kansas as well as her personal encounters with Native Americans in Kansas.
Date: 1931-02-24/1932
Creator: Cooper, Elizabeth Simpson, 1840-
Partner: UNT Libraries Special Collections

The Behavior of Conventional Airplanes in Situations Thought to Lead to Most Crashes

Description: Simple flight tests were made on ten conventional airplanes for the purpose of determining their action in two situations, which are generally thought to precede and lead to a large proportion of airplane crashes. These situations are when in an attempt to stretch the glide in a forced landing, the airplane is stalled, and when while taking off, particularly if taking off steeply, the engine fails at a low altitude.
Date: February 1931
Creator: Weick, Fred E.
Partner: UNT Libraries Government Documents Department

Injection Labs in a Common-Rail Fuel Injection System

Description: Note presenting injection lags determined for a common-rail fuel injection system for a compression-ignition engine. The system consisted of a high-pressure reservoir, a timing valve, an injection valve tube, and an automatic injection valve. Results regarding the variable injection valve tube length, variable tube diameter, variable valve opening pressure, variable injection pressure, and variable initial pressure are provided.
Date: February 1930
Creator: Rothrock, A. M.
Partner: UNT Libraries Government Documents Department

Preliminary Tests on the Vaporization of Fuel Sprays

Description: "High-speed motion pictures were taken of fuel sprays injected into the combustion chamber of the N.A.C.A. combustion apparatus. Three fuels, ethyl alcohol, gasoline, and fuel oil, which differed considerably in volatility were tested. By maintaining the engine temperature below that required for ignition the spray could be studied from soon after the start of injection until 130 crank degrees later. The results show that the sprays vaporize appreciably so that it is possible for the ignition in high speed compression-ignition engines to take place from the vapor phase" (p. 1).
Date: February 1932
Creator: Rothrock, A. M.
Partner: UNT Libraries Government Documents Department

Vortex Noise From Rotating Cylindrical Rods

Description: "A series of round rods of the some diameter were rotated individually about the mid-point of each rod. Vortices are shed from the rods when in motion, giving rise to the emission of sound. With the rotating system placed in the open air, the distribution of sound in space, the acoustical power output, and the spectral distribution have been studied. The frequency of emission of vortices from any point on the rod is given by the formula of von Karman" (p. 1).
Date: February 1935
Creator: Stowell, E. Z. & Deming, A. F.
Partner: UNT Libraries Government Documents Department

Tests in the Variable Density Wind Tunnel to Investigate the Effects of Scale and Turbulence on Airfoil Characteristics

Description: "The effect of scale and turbulence on the lift and drag of five airfoils the NACA 0006, the NACA 0021, the Clark Y and the USA 35-A, and the USN PS6, have been investigated in the Variable Density Wind Tunnel of the NACA. Tests were made over a wide scale range for only two different conditions of turbulence. Because of the limited scope of the tests, no general conclusions have been drawn, but it is indicated that increasing either turbulence or scale eliminates the discontinuities in the lift curves for thick airfoils, and that the effects of increased turbulence on the profile drag of airfoils tend to become of small importance at very high Reynolds Numbers" (p. 1).
Date: February 1931
Creator: Stack, John
Partner: UNT Libraries Government Documents Department