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  Partner: UNT Libraries Government Documents Department
 Decade: 1940-1949
 Year: 1940
Apple-orchard renovation.

Apple-orchard renovation.

Date: 1940
Creator: Gould, H. P.
Description: Describes various methods for maximizing the quality and output of apple orchards.
Contributing Partner: UNT Libraries Government Documents Department
The application of basic data on planing surfaces to the design of flying-boat hulls

The application of basic data on planing surfaces to the design of flying-boat hulls

Date: January 1, 1940
Creator: Diehl, Walter S
Description: Basic lift data on planing surfaces have been analyzed and the data applied to the design of flying-boat hulls. It is shown that a balance between air and water forces requires that the beam of the planing area bear a relation to the wing area that is determined by the lift coefficient of the wing and by the angle of dead rise in the planing surface. It is also shown that the fore-and-aft extent of the required planing area depends on the angle of dead rise. Failure to provide sufficient length of planing area appears to be the main reason for the poor water performance sometimes obtained when a large angle of dead rise is used.
Contributing Partner: UNT Libraries Government Documents Department
Application of the methods of gas dynamics to water flows with free surface I : flows with no energy dissipation

Application of the methods of gas dynamics to water flows with free surface I : flows with no energy dissipation

Date: March 1, 1940
Creator: Preiswerk, Ernst
Description: The application is treated in sufficient detail to facilitate as much as possible its application by the engineer who is less familiar with the subject. The present work was undertaken with two objects in view. In the first place, it is considered as a contribution to the water analogy of gas flows, and secondly, a large portion is devoted to the general theory of the two-dimensional supersonic flows.
Contributing Partner: UNT Libraries Government Documents Department
Application of the methods of gas dynamics to water flows with free surface II : flows with momentum discontinuities (hydraulic jumps)

Application of the methods of gas dynamics to water flows with free surface II : flows with momentum discontinuities (hydraulic jumps)

Date: March 1, 1940
Creator: Preiswerk, Ernst
Description: In this paper an introduction to shock polar diagrams is given which then leads into an examination of water depths in hydraulic jumps. Energy loss during these jumps is considered along with an extended look at elementary solutions of flow. An experimental test set-up is described and the results presented.
Contributing Partner: UNT Libraries Government Documents Department
An Approximate Method of Calculation of Relative Humidity Required to Prevent Frosting on Inside of Aircraft Pressure Cabin Windows, Special Report

An Approximate Method of Calculation of Relative Humidity Required to Prevent Frosting on Inside of Aircraft Pressure Cabin Windows, Special Report

Date: December 5, 1940
Creator: Jones, Alun R.
Description: This report has been prepare in response to a request for information from an aircraft company. A typical example was selected for the presentation of an approximate method of calculation of the relative humidity required to prevent frosting on the inside of a plastic window in a pressure type cabin on a high speed airplane. The results of the study are reviewed.
Contributing Partner: UNT Libraries Government Documents Department
Bean growing in northern Idaho, eastern Washington, and eastern Oregon.

Bean growing in northern Idaho, eastern Washington, and eastern Oregon.

Date: 1940
Creator: Hunter, Byron, b. 1869.
Description: Describes best practices for profitable bean-growing in the northwestern United States.
Contributing Partner: UNT Libraries Government Documents Department
Biology of the seed-corn maggot in the coastal plain of the South Atlantic states

Biology of the seed-corn maggot in the coastal plain of the South Atlantic states

Date: June 1940
Creator: Reid, W. J. (William John), 1902- & Hall, D. G.
Description: Describes the seed-corn maggot of the south Atlantic states at different stages of life, its history, and its habits.
Contributing Partner: UNT Libraries Government Documents Department
Black walnut for timber and nuts.

Black walnut for timber and nuts.

Date: 1940
Creator: Mattoon, Wilbur R. (Wilbur Reed), 1875-1941. & Reed, C. A. (Clarence Arthur), 1880-1950.
Description: A guide to growing black walnut trees for timber, nut crops, or ornamental use.
Contributing Partner: UNT Libraries Government Documents Department
Blackleg : its nature, cause, and prevention.

Blackleg : its nature, cause, and prevention.

Date: 1940
Creator: Mohler, John R. (John Robbins), b. 1875.
Description: Describes blackleg, a livestock disease. Explains how to recognize, treat, and prevent it.
Contributing Partner: UNT Libraries Government Documents Department
Blueberries.

Blueberries.

Date: October 1940
Creator: Darrow, George M. (George McMillan), 1889-
Description: Discusses aspects of blueberry production in the United States from planting through harvesting and marketing, and examines different types of blueberries.
Contributing Partner: UNT Libraries Government Documents Department