Tunnel diode circuits coupled into transmission lines.

Mode of access: Internet.

Tunnel diode circuits based on lumped constant circuitry /

"This work was supported in part by the Office of Naval Research under Contract No. Nonr-1834(15)"

Impact of I-664 bridge/tunnel project on wave conditions at Newport News Harbor, Virginia : hydraulic model investigation /

"October 1984."

Modern British permanent way. Treating of rails, chairs, fishbolts, fishplates, keys, sleepers, ballast, rail-joints, points and crossings, &c.

"Originally written as a series of articles for ʻThe Railway Newsʾ, in which they appeared at various periods between the years 1911 and 1914."--Pref.

Sand ripple growth in an oscillatory-flow water tunnel /

The development of sand ripples in an oscillatory-flow water tunnel was observed in 104 laboratory experiments approximating conditions at the seabed under steady progressive surface waves. The period, T, and amplitude, a, of the water motion were varied over wide ranges. Three quartz sands were used, with mean grain diameters, D = 0.55, 0.21, and 0.18 millimeter. In 24 experiments, with the bed initially leveled, T was reduced until ripples appeared, and their development to final equilibrium form was observed without further change in T. The remaining 80 experiments investigated the response of previously established bed forms to changes in T or a or both. The ripple length, lambda, and height, eta, were measured from photos, except when bed forms were three dimensional.

Clapper rail survey and investigation. Final report.

Folded map in pocket.

Reduction of loss and damage in rail transportation of fresh fruits and vegetables by improved loading methods ...

Cover-title.

Wave superheater hypersonic tunnel; semiannual report,

"AEDC TDR-62-54. Program area 750A. AFSC project 4773. Contract no. AF40(600)-804."

NOL hypervelocity wind tunnel, report.

Caption title.

Note sur le profil géologique et la tectonique du massif du Simplon, suivi d'un rapport supplementaire sur les venues d'eau rencontrées dans le tunnel du Simplon, du côte d'Iselle.

Mode of access: Internet.

Recirculation principle for ground effect machines; three dimensional wind tunnel tests.

"Task 9R99-005-04. Contract DA 44-177-TC-710."

Standard tee rail construction for steam rail road and industrial railway track and switch work.

"Catalogue no. 21."

Low-density research in the hypersonic shock tunnel

"The experimental study reported here has been performed under the sponsorship of the Fluid Dynamics Branch, Aeronautical Research laboratories of the U.S. Air Force Air Research and Development Command, Contract no. AF 33(616)-6025."

48-inch hypersonic shock tunnel; description and capabilities.

Mode of access: Internet.

Development of an apparatus for wind tunnel dynamic experiments at high-[alpha] /

Cover title.