The Johns Hopkins University

Jennifer A Nix

Protagoras N Cutchis

George M Murray

Harvey Wayne Ko

Michael P McLoughlin

Micah A Carlson

Jennifer L Sample

Adam K Arabian

David R Kohler

Cheryl S Schein

Charles W Kerechanin, Ii

Dexter G Smith

A method and apparatus for evaluating a bioaerosol sample is provided which includes detecting frequency and/or time resolution factors that allow discriminate between a plurality of signals emitted by the bioaerosol to selectively detect biological materials contained in the bioaerosol sample from materials of non-biological origin and potentially associated with a pathogenic bioaerosol.

Method and apparatus for detection of bioaerosols

A portable ventilator for providing an air-recipient with compulsory respiration is provided with an outlet manifold and a single-expansion-chamber muffler configured so that airflow through an inhale outlet port of the muffler is pulse-free and a transmission loss, defined as the ratio of sound power generated by the at least one compressor and incident on the muffler to the sound power transmitted by the muffler, is sufficient to deaden the sound power of the compressor.

Portable ventilator

Growing community of inventors

Ellicott City, MD, United States of America

Jennifer A Nix