Trichinosis: A Disease Caused by Eating Raw Pork. (open access)

Trichinosis: A Disease Caused by Eating Raw Pork.

Describes the life cycle and treatment for trichnosis, a parasitic worm that humans ingest when eating pork that has not been properly cooked.
Date: February 1941
Creator: Schwartz, Benjamin, 1889-
Object Type: Book
System: The UNT Digital Library
The peach borer: how to prevent or lessen its ravages. (open access)

The peach borer: how to prevent or lessen its ravages.

Describes the life cycle of the peach borer and suggests methods for reducing damage caused by it.
Date: February 1941
Creator: Snapp, Oliver I.
Object Type: Book
System: The UNT Digital Library
Sheep-killing dogs. (open access)

Sheep-killing dogs.

Describes the problems posed by sheep-killing dogs and their habits. Discusses control methods, including dog-proof fencing and law enforcement. Provides suggestions for uniform state dog laws, and a summary of existing state dog laws.
Date: February 1941
Creator: Simmons, V. L. (Victor Leonidas), 1901-
Object Type: Book
System: The UNT Digital Library
Airship aerodynamics. (open access)

Airship aerodynamics.

"This manual is designed as a text for the instruction of airship student pilots .... to give the knowledge of aerodynamics essential to the operation of [lighter than air aircraft]."(Page 2.)
Date: February 11, 1941
Creator: United States. War Department.
Object Type: Book
System: The UNT Digital Library
The End-Plate Effect of a Horizontal-Tail Surface on Vertical Tail Surface (open access)

The End-Plate Effect of a Horizontal-Tail Surface on Vertical Tail Surface

Note presenting the end-plate effect of the horizontal-tail surface on the vertical-tail surface as theoretically studied by derivation of the flow corresponding to the condition of minimum induced drag and by solution of the usual lifting-line equations. The results obtained by the two methods were considerably different, indicated that the condition derived is not a close approximation to the actual condition.
Date: February 1941
Creator: Katzoff, S. & Mutterperl, William
Object Type: Report
System: The UNT Digital Library
Two-Stage Supercharging (open access)

Two-Stage Supercharging

"The arrangement of the parts and the installation and control problems of the two-stage mechanically driven superchargers for aircraft engines are discussed. Unless an entirely new form of supercharging is developed, there will be a definite need for a two-stage centrifugal supercharger. It is shown that the two-stage mechanically driven supercharger itself is a comparatively simple device; the complications arise from the addition of inter-coolers and controls" (p. 1).
Date: February 1941
Creator: Buck, Richard S.
Object Type: Report
System: The UNT Digital Library
Effect of several supercharger control methods on engine performance (open access)

Effect of several supercharger control methods on engine performance

Report presenting an analytical comparison of a variety of superchargers using the same hypothetical engine, which include a single-speed, a two-speed, and a variable-speed DVL centrifugal supercharger, the Szydlowski-Planiol supercharger with a single-speed and a two-speed transmission, and a turbosupercharger.
Date: February 1941
Creator: Wasielewski, Eugene W. & King, J. Austin
Object Type: Report
System: The UNT Digital Library
Wind-Tunnel Investigation of an NACA 23021 Airfoil With Two Sizes of Balanced Split Flaps (open access)

Wind-Tunnel Investigation of an NACA 23021 Airfoil With Two Sizes of Balanced Split Flaps

Report presenting an investigation in the 7- by 10-foot wind tunnel of a large-chord NACA 23021 airfoil with a 15-percent-chord and a 25-percent-chord balanced split flap of Clark Y profile, to determine the aerodynamic section characteristics of the airfoil-flap combinations as affected by the size, nose location, and deflection of the flaps.
Date: February 1941
Creator: Swanson, Robert S. & Schuldenfrei, Marvin J.
Object Type: Report
System: The UNT Digital Library
Effect of Aging on Mechanical Properties of Aluminum-Alloy Rivets (open access)

Effect of Aging on Mechanical Properties of Aluminum-Alloy Rivets

"Curves and tabular data present the results of strength tests made during and after 2 1/2 years of aging on rivets and rivet wire of 3/16-inch nominal diameter. The specimens were of aluminum alloy: 24s, 17s, and a17s of the duralumin type and 53s of the magnesium-silicide type" (p. 353).
Date: February 7, 1941
Creator: Roop, Frederick C.
Object Type: Report
System: The UNT Digital Library
High-speed wind-tunnel tests of the NACA 23012 and 23012-64 airfoils (open access)

High-speed wind-tunnel tests of the NACA 23012 and 23012-64 airfoils

Report presenting force tests of the NACA 23012 and 23012-64 airfoils of 24-inch chord in the high-speed wind tunnel at a range of Mach numbers. The results show the variation with mach number of lift, drag, and pitching-moment coefficients at a range of angles of attack.
Date: February 1941
Creator: Becker, John V.
Object Type: Report
System: The UNT Digital Library
On the Calculation of Flow Past an Infinite Screen of Thin Airfoils (open access)

On the Calculation of Flow Past an Infinite Screen of Thin Airfoils

This report deals with the flow past an infinite screen of thin airfoil (two-dimensional problem). The vortex distribution across the profile is established with appropriate expansion in series and the velocity distribution lift, moment, and profile shape deduced. Inversely, the distribution is deduced from the vorticity. The method is the extension of the Birnbaum-Glauert method for the isolated wing.
Date: February 1941
Creator: Pistolesi, E.
Object Type: Report
System: The UNT Digital Library
Comparison of Automatic Control Systems (open access)

Comparison of Automatic Control Systems

This report deals with a reciprocal comparison of an automatic pressure control, an automatic rpm control, an automatic temperature control, and an automatic directional control. It shows the difference between the "faultproof" regulator and the actual regulator which is subject to faults, and develops this difference as far as possible in a parallel manner with regard to the control systems under consideration. Such as analysis affords, particularly in its extension to the faults of the actual regulator, a deep insight into the mechanism of the regulator process.
Date: February 1941
Creator: Oppelt, W.
Object Type: Report
System: The UNT Digital Library
Determination of control-surface characteristics from NACA plain-flap and tab data (open access)

Determination of control-surface characteristics from NACA plain-flap and tab data

From Summary: "The data from previous NACA pressure-distribution investigations of plain flaps and tabs have been analyzed and are presented in this paper in a form readily applicable to the problems of control-surface design. The experimentally determined variation of aerodynamic parameters with flap chord and tab chord are given in chart form and comparisons are made with the theory. With the aid of these charts and the theoretical relationships for a thin airfoil, the aerodynamic characteristics for control surfaces of any plan form with plain flaps and tabs may be determined. A discussion of the basic equations of the thin-airfoil theory and the development of a number of additional equations that will be helpful in tail design are presented in the appendixes. The procedure for applying the data is described and a sample problem of tail design is included."
Date: February 1941
Creator: Ames, Milton B., Jr. & Sears, Richard I.
Object Type: Report
System: The UNT Digital Library
Texas Attorney General Opinion: O-2979 (open access)

Texas Attorney General Opinion: O-2979

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Gerald Mann, regarding a legal question submitted for clarification: Does the two-year statute of limitation bar an action to recover penalty and interest on delinquent state, county, school district and city taxes?
Date: February 7, 1941
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: O-2983 (open access)

Texas Attorney General Opinion: O-2983

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Gerald Mann, regarding a legal question submitted for clarification: The applicability of Articles 4005, 4006 and 4008, Vernon's Annotated Civil Statutes, to motor carriers.
Date: February 5, 1941
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: O-2984 (open access)

Texas Attorney General Opinion: O-2984

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Gerald Mann, regarding a legal question submitted for clarification: Whether under given facts tax collector should require payment of personal property taxes along with taxes due on real estate.
Date: February 5, 1941
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: O-2985 (open access)

Texas Attorney General Opinion: O-2985

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Gerald Mann, regarding a legal question submitted for clarification: Does Article 6797, relative to bridges and ferries, contemplate that the interest as well as principal of bonds thereunder be retired solely upon the revenues assessed and collected as tolls?
Date: February 3, 1941
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: O-3000 (open access)

Texas Attorney General Opinion: O-3000

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Gerald Mann, regarding a legal question submitted for clarification: What insurance, if any, may State Teachers Colleges carry by authorization of the Board of Regents and pay the premium out of the local funds of the colleges?
Date: February 6, 1941
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: O-3027 (open access)

Texas Attorney General Opinion: O-3027

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Gerald Mann, regarding a legal question submitted for clarification: Exemption from taxation of land owned by Willacy County Water Control and Improvement District No. 1 for reservoir site not yet constructed.
Date: February 12, 1941
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: O-3035 (open access)

Texas Attorney General Opinion: O-3035

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Gerald Mann, regarding a legal question submitted for clarification: Construction of Articles 1970-302 and 1961 Vernon's Revised Civil Statutes, with respect to the terms of the County Court of Menard County.
Date: February 21, 1941
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: O-3048 (open access)

Texas Attorney General Opinion: O-3048

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Gerald Mann, regarding a legal question submitted for clarification: Pleas of guilty in misdemeanor cases may not be legally accepted on Sunday.
Date: February 21, 1941
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: O-3049 (open access)

Texas Attorney General Opinion: O-3049

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Gerald Mann, regarding a legal question submitted for clarification: Accrual of tax levied by Article 7047(41.a), Vernon's Annotated Revised Civil Statutes of Texas, upon the sale of cement to contractor under a "cost-plus-affixed-fee" contract with the War Department for the construction of a Total and Explosive plant at Baytown, Texas.
Date: February 21, 1941
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: O-3050 (open access)

Texas Attorney General Opinion: O-3050

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Gerald Mann, regarding a legal question submitted for clarification: Chairman of the Democratic Executive Committee of Kerr County acting as clerk, supervisor or judge at an election.
Date: February 3, 1941
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: O-3053 (open access)

Texas Attorney General Opinion: O-3053

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Gerald Mann, regarding a legal question submitted for clarification: Persons drafted into military service of the United States - liability to poll tax - right of such persons to vote.
Date: February 18, 1941
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History