Abstract: An instrument and method for examining the optic nerve head (34) of a patient's eye (14) is disclosed. The instrument is comprised of a gonioscopic lens (10) a lens system (26) where the lens system (26) directs a collimated beam of light towards a point (32) away from the center line (28) through the gonioscopic lens (10) and eye (14). When the patient fixates on the beam of light (32), the ophthalmologist can examine the optic nerve head (34) through the gonioscopic lens (10).
Type:
Grant
Filed:
March 22, 1990
Date of Patent:
June 18, 1991
Assignees:
Center for Innovative Technology, Virginia Commonwealth University, Virginia Polytechnic Institute and State University
Abstract: An open chain poly Reissert can be formed by the initial reaction of an aromatic dialdehyde (e.g., terephthaldicaboxaldehyde) and primary amine (e.g., methylamine) to form a reaction product which is then reacted with an aliphatic acid chloride (e.g., adipoyl chloride).
Type:
Grant
Filed:
October 6, 1989
Date of Patent:
May 29, 1990
Assignee:
Virginia Polytechnic Institute and State University
Inventors:
Harry W. Gibson, Yajnanarayana H. R. Jois
Abstract: The invention is a heat flux gage applied to a surface, for the measurement of surface heat transfer. All elements of the gage are thin films, deposited on the surface by sputtering or an equivalent process. The gage comprises a plurality of thermocouple junctions connected as a differential thermopile, with hot and cold junctions on the two faces of a planar thermal resistance element. Electrical insulating and protective layers are deposited between the surface and the gage, and over the exterior of the gage. The gage output signal is a voltage indicative of heat flux.
Type:
Grant
Filed:
October 15, 1987
Date of Patent:
October 25, 1988
Assignee:
Virginia Polytechnic Institute and State University
Abstract: Disclosure is made of a novel assembly for transporting anaerobic microbes from clinical patient to laboratory. The assembly provides a convenient and reliable means of maintaining microbial viability in the critical period between collection and deposition in a culturing environment.
Type:
Grant
Filed:
April 23, 1975
Date of Patent:
February 17, 1976
Assignee:
Virginia Polytechnic Institute Educational Foundation, Inc.
Inventors:
Tracy Dale Wilkins, Franklin Jimenez-Ulate