The Shock and vibration bulletin.

"A publication of the Shock and Vibration Information Center, Naval Research Laboratory, Washington, D.C."

Bioindicators for assessing ecological integrity of prairie wetlands /

"July 1996."

Research report - Corps of Engineers, U.S. Army, Cold Regions Research and Engineering Laboratory.

Some no. issued in more than one part.

Progress through wood research : the Forest Products Laboratory past, present, and future.

Mode of access: Internet.

Florist and Nursery Crops Laboratory : research programs and personnel.

Mode of access: Internet.

Research and development in energy at the Los Alamos Scientific Laboratory.

"United States Atomic Energy Commission Contract W-7405-ENG. 36."

U.S.D.A. Forest Service research paper FPL.

Title from cover.

Proceedings of the U.S. Nuclear Regulatory Commission Thirteenth Water Reactor Safety Research Information Meeting, held at National Bureau of Standards, Gaithersburg, Maryland, October 22-25, 1985 /

Includes bibliographies.

U.S. Naval flight surgeon's manual.

"Prepared ... under contract Nonr-4613(00) with Physiological Psychology Branch, Psychological Sciences Division, Office of Naval Research, under the auspices of the Chief of Naval Operations and the Bureau of Medicine and Surgery."

Proceedings of the Third Japan-U.S. Seminar on HTGR Safety Technology, June 2-3, 1982, Brookhaven National Laboratory, Upton, New York 11973 /

Includes bibliographical references.

Ontogenetic Changes in the Bell Morphology and Kinematics and Swimming Behavior of Rowing Medusae: the Special Case of the Limnomedusa Liriope tetraphylla

Swimming animals may experience significant changes in the Reynolds number (Re) of their surrounding fluid flows throughout ontogeny. Many medusae experience Re environments with significant viscous forces as small juveniles but inertially dominated Re environments as adults. These different environments may affect their propulsive strategies. In particular, rowing, a propulsive strategy with ecological advantages for large adults, may be constrained by viscosity for small juvenile medusae. We examined changes in the bell morphology and swimming kinematics of the limnomedusa Liriope tetraphylla at different stages of development. L. tetraphylla maintained an oblate bell (fineness ratio approximate to 0.5-0.6), large velar aperture ratio (R(v) approximate to 0.5-0.8), and rapid bell kinematics throughout development. These traits enabled it to use rowing propulsion at all stages except the very smallest sizes observed (diameter = 0.14 cm). During the juvenile stage, very rapid bell kinematics served to increase Re sufficiently for rowing propulsion. Other taxa that use rowing propulsion as adults, such as leptomedusae and scyphomedusae, typically utilize different propulsive strategies as small juveniles to function in low Re environments. We compared the performance values of the different propulsive modes observed among juvenile medusae.

Movable-bed laboratory experiments comparing radiation stress and energy flux factor as predictors of longshore transport rate /

"April 1981."

National Conference on Less Costly Wastewater Treatment Systems for Small Communities, U.S. Environmental Protection Agency, Date: April 12, 13, and 14, 1977, Location: Reston, Virginia.

Mode of access: Internet.