University of California

Michael J Delwiche

Edward J DePeters

Robert H Bondurant

Daniel M Jenkins

John M Krochta

Richard E Rice

Cynthia Atterholt

A sensor is provided that is useful for assaying a component of a biological fluid such as blood, urine or milk, and comprises a chamber having an inlet, a liquid containing portion and a vapor containing portion. The liquid and vapor containing portions are in fluid communication. A pressure monitor is in communication with the vapor containing portion and measures pressure change within the vapor containing portion, such as carbon dioxide partial pressure changes which are related to concentration of urea in blood, urine or milk when the enzyme is urease. A method of analyzing a component such as urea in a biological fluid is also provided. Where the biological fluid is dairy milk, milk urea nitrogen to a prediction error of about &plus;/&minus;1 mg/dl may be repeatedly measured in the physiological range of from about 6 to 24 mg/dl.

Sensor for analyzing components of fluids

A sprayable or solid biodegradable wax carrier for insect pheromones and a method for constant release rate of the pheromone from the biodegradable wax. A composition comprising a pheromone and paraffin wax formulated as an aqueous emulsion or a solid suitable for application to a surface of a tree or crop for mating disruption of insect pests. Pheromone is released by diffusion or by partitioning from the biodegradable wax carrier or by pheromone exposure due to the biodegradable wax carrier degradation.

Aqueous emulsion comprising biodegradable carrier for insect pheromones

Growing community of inventors

Winters, CA, United States of America

Michael J Delwiche