Hepatic manifestations of celiac disease

Different hepatic and biliary tract disorders may occur with celiac disease. Some have been hypothesized to share genetic or immunopathogenetic factors, such as primary biliary cirrhosis, primary sclerosing cholangitis, and autoimmune hepatitis. Other hepatic changes in celiac disease may occur with malnutrition resulting from impaired nutrient absorption, including hepatic steatosis. In addition, celiac disease may be associated with rare hepatic complications, such as hepatic T-cell lymphoma

Pressure-Distribution Measurements on the Hull and Fins of a 1/40-Scale Model of the U. S. Airship "Akron."

This report presents the results of measurements of pressure distribution conducted in the propeller-research wind tunnel of the National Advisory Committee for Aeronautics on a 1/40-scale model of the U. S. Airship "Akron" (ZRS-4). The pressures, which were measured simultaneously at nearly 400 orifices located at 26 stations along one side of the hull, were recorded by two photographic multiple manometers placed inside the model. The hull pressures were measured both with and without the tail surfaces and the control car for eight angles of pitch varying from 0 degree to 20 degrees and at air speeds of approximately 70 and 100 miles per hour. The pressures were also measured at approximately 160 orifices on one horizontal fin for the above speeds and pitch angles and for nine elevator angles

Measurements of Flow in the Boundary Layer of a 1/40-Scale Model of the U. S. Airship "Akron."

This report presents the results of measurements of flow in the boundary layer of a 1/40-scale model of the U. S. Airship "Akron" (ZRS-4) made with the object of determining the boundary-layer thickness, the point of transition from laminar to the turbulent flow, and the velocity distribution in the boundary layer

Comparison of Full-Scale Propellers Having R.A.F.-6 and Clark Y Airfoil Sections

In this report the efficiencies of two series of propellers having two types of blade sections are compared. Six full-scale propellers were used, three having R. A. F.-6 and three Clark Y airfoil sections with thickness/chord ratios of 0.06, 0.08, and 0.10. The propellers were tested at five pitch setting, which covered the range ordinarily used in practice. The propellers having the Clark Y sections gave the highest peak efficiency at the low pitch settings. At the high pitch settings, the propellers with R. A. F.-6 sections gave about the same maximum efficiency as the Clark Y propellers and were more efficient for the conditions of climb and take-off

Evolution of a Scientific Meeting: Eighty Annual Meetings of the American Society of Mammalogists, 1919-2000

The American Society of Mammalogists has held 80 annual meetings between 1919 and 2000. These meetings have been held in 32 U.S. states, the District of Columbia, Canada, and Mexico. At least 86 people have served as the chair or co-chair of the Local Committee planning the meetings. The number of technical presentations has grown from a low of 17 in 1921 to 340 in 1994. Symposia were an early feature of annual meetings but did not become a regular feature until 1971. Poster presentations were introduced in 1979 and reached a high of 195 posters at the 1994 annual meeting. Two trends are evident in the analyses of presentation data from annual meetings. There has been a major increase in the number of presentations, especially since 1968, when the number of presentations first exceeded 100. The other trend is the significant increase of participation of women scientists in the annual meetings of the Society. This trend had its origins in the late 1960s and was significantly aided by the addition of poster sessions, which have been popular venues for women scientists to present their research results. However, women are not as well represented as organizers or invited participants in symposia