280 research outputs found
Prosthetic urinary sphincter
A pump/valve unit for controlling the inflation and deflation of a urethral collar in a prosthetic urinary sphincter device is described. A compressible bulb pump defining a reservoir was integrated with a valve unit for implantation. The valve unit includes a movable valve member operable by depression of a flexible portion of the valve unit housing for controlling fluid flow between the reservoir and collar; and a pressure sensing means which operates the valve member to relieve an excess pressure in the collar should too much pressure be applied by the patient
An investigation of some thermal and mechanical properties of a low-density phenolic-nylon ablation material Final report
Thermal and mechanical properties of phenolic nylon ablation material
An investigation of the mechanisms of heat transfer in low-density phenolic-nylon chars
Conductive heat transfer mechanisms in low density phenolic-nylon char
Space probe/satellite ejection apparatus for spacecraft
An ejection apparatus for spinning and propelling objects for ejection from a spacecraft at a desired velocity and rotational speed is discussed. The apparatus includes a launch cradle on which the space object to be ejected rests. The cradle is rotatably supported by a central hub secured to the upper end of the pneumatic cylinder piston shaft. Release mechanisms consisting of a retractable pin and locking lug is utilized to hold the cradle and object to be ejected. The release mechanism has a fixed barrier member which holds the retractable pin in engagement with the locking lug until release by upward movement of the launch cradle beyond the barrier height
Limnetic crustaceans in Esthwaite water and adjacent lakes
Limnetic crustaceans (i.e. those which live in the open water of lakes and ponds) were investigated in Esthwaite water and adjacent lakes. These are represented by two groups, Copepoda and Cladocera
Bellows flow-induced vibrations
The bellows flow excitation mechanism and results of comprehensive test program are summarized. The analytical model for predicting bellows flow induced stress is refined. The model includes the effects of an upstream elbow, arbitrary geometry, and multiple piles. A refined computer code for predicting flow induced stress is described which allows life prediction if a material S-N diagram is available
Algal blooms increase heterotrophy at the base of boreal lake food webs-evidence from fatty acid biomarkers
Selective predation by benthivorous fish on stream macroinvertebrates – The role of prey traits and prey abundance
Managing the Veterinary Clinic Enterprise
This document serves as a guideline for the student management of the Veterinary Clinic Enterprise
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