6,267 research outputs found

    Southwest Research Institute assistance to NASA in biomedical areas of the technology utilization program Cumulative quarterly report, 1 Oct. 1967 - 31 Mar. 1968

    Get PDF
    Quarterly operations summary of center for selective dissemination of biomedical information within Technology Utilization progra

    The Tokyo War Crimes Trial, 1946-1948: The Case for the Defense

    Get PDF
    Between April 29, 1946 and November 12, 1948 the International Military Tribunal for the Far East convened in Tokyo to try twenty-eight Japanese prewar and wartime leaders accused of war crimes. Eleven Allied countries formed the Tribunal. The International Military Tribunal for the Far East sentenced seven Japanese to death, sixteen to life imprisonment terms and two to terms of seven and sixteen years imprisonment. The primary problem with the Tokyo War Crimes Trial was the nature of the charges against the Japanese accused. Some of the defendants were certainly guilty of the alleged violations of the laws of war. The accused, however, were tried not only on conventional war crimes charges, as recognized by international law, but on ex post facto counts which were unnecessary to attain convictions. The charges of Crimes against Peace and Crimes against Humanity had no basis in international law. The outcome and historical judgment of the trial would appear far different had the Japanese been tried only on conventional war crimes charges. Whether one believes the defendants innocent or guilty of war crimes, the International Military Tribunal for the Far East proceedings were hardly a model of impartiality. The rules of trial procedure, the nature of the evidence and the court's bias in favor of the prosecution precluded a fair trial by American standards. The Tokyo Tribunal, for example, admitted hearsay evidence, permitted leading questions and required testimony by affidavit which prevented cross-examination of the witnesses. If defeated American war leaders had faced trial on the Tokyo standard, the outcry would have been enormous

    A model for the submarine depthkeeping team

    Get PDF
    The most difficult task the depthkeeping team must face occurs during periscope-depth operations during which they may be required to maintain a submarine several hundred feet long within a foot of ordered depth and within one-half degree of ordered pitch. The difficulty is compounded by the facts that wave generated forces are extremely high, depth and pitch signals are very noisy and submarine speed is such that overall dynamics are slow. A mathematical simulation of the depthkeeping team based on the optimal control models is described. A solution of the optimal team control problem with an output control restriction (limited display to each controller) is presented

    Pilot cryo tunnel: Attachments, seals, and insulation

    Get PDF
    Several different tests are described which simulated the actual configuration of a cryogenic wind tunnel operating at pressures up to 5 atmospheres (507 kPa) and temperatures from -320 F (78K) to 120 F (322K) in order to determine compatible bolting, adequate sealing, and effective insulating materials. The evaluation of flange attachments (continuous threaded studs) considered bolting based on compatible flanges, attachment materials, and prescribed bolt elongations. Various types of seals and seal configurations were studied to determine suitability and reusability under the imposed pressure and temperature loadings. The temperature profile was established for several materials used for structural supports

    Southwest Research Institute assistance to NASA in biomedical areas of the technology utilization program Quarterly progress report, 1 Jul. - 30 Sep. 1968

    Get PDF
    Southwest Research Institute activites in NASA technology utilization program for biomedical use, 1 Jul. - 30 Sep. 196

    A Preliminary Investigation of Supercharging an Air-Cooled Engine in Flight

    Get PDF
    This report presents the results of preliminary tests made on the effects of supercharging an air-cooled engine under airplane flight conditions. Service training airplanes were used in the investigation equipped with production types of Wright J engines. A N.A.C.A. Roots type supercharger was driven from the rear of the engine. In addition to measuring those quantities that would enable the determination of the climb performance, measurements were made of the cylinder-head temperatures and the carburetor pressures and temperatures. The supercharging equipment was not removed from the airplane when making flights without supercharging, but a by-pass valve, which controlled the amount of supercharging by returning to the atmosphere the surplus air delivered by the supercharger, was left full open. With the supercharger so geared that ground-level pressure could be maintained to 18,500 feet, it was found that the absolute ceiling was increased from 19,400 to 32,600 feet, that the time to climb to 16,00 feet was decreased from 32 to 16 minutes, and that this amount of supercharging apparently did not injure the engine. (author

    Lymphotoxins and cytomegalovirus cooperatively induce interferon-beta, establishing host-virus détente

    Get PDF
    Tumor necrosis factor (TNF)-related cytokines regulate cell death and survival and provide strong selective pressures for viruses, such as cytomegalovirus (CMV), to evolve counterstrategies in order to persist in immune-competent hosts. Signaling by the lymphotoxin (LT)-β receptor or TNF receptor-1, but not Fas or TRAIL receptors, inhibits the cytopathicity and replication of human CMV by a nonapoptotic, reversible process that requires nuclear factor κB (NF-κB)-dependent induction of interferon-β (IFN-β). Efficient induction of IFN-β requires virus infection and LT signaling, demonstrating the need for both host and viral factors in the curtailment of viral replication without cellular elimination. LTα-deficient mice and LTβR-Fc transgenic mice were profoundly susceptible to murine CMV infection. Together, these results reveal an essential and conserved role for LTs in establishing host defense to CMV

    Study of several factors affecting crew escape trajectories from the Space Shuttle Orbiter at low-subsonic speeds

    Get PDF
    Factors affecting the bailout characteristics from the space shuttle orbiter at low-subsonic speeds were investigated. In the 12-foot low-speed tunnel and the 4 by 7-meter tunnel with 0.03-scale models. The effect of crew-model exit velocity, body position, and body weight were studied with egress from the main side hatch with the orbiter upright and from the upper cabin hatch with the orbiter inverted. Crew model drag and flow field measurements around the orbiter were estimated. The high-angle-of-attack trim characteristics of the orbiter was determined by force tests in an attempt to improve bailout conditions. A computer simulation was made to evaluate the maneuver necessary to attain the high-angle-of-attack trim
    • …
    corecore