Articles by Casey Barr in JoVE
디지털 홀로그램 현미경 (DHM)를 사용 하 여 낮은 농도에서 미생물 측정 Manuel Bedrossian1, Casey Barr2, Chris A. Lindensmith3, Kenneth Nealson2, Jay L. Nadeau1 1Department of Medical Engineering, California Institute of Technology, 2Department of Earth Sciences, University of Southern California, 3Jet Propulsion Laboratory, California Institute of Technology 디지털 홀로그램 현미경 (DHM) 이미징 샘플 50-100 X 초점 비교 해상도, 명시 야 현미경 보다 두꺼운 수행 후 처리를 허용 하는 체적 기술입니다. 여기 DHM 사용 됩니다 식별, 계산, 그리고 미생물에서 매우 낮은 밀도 추적과 광학 밀도 측정, 판 수, 및 직접 카운트와 비교.
Other articles by Casey Barr on PubMed
Limits on Gravitational-wave Emission from Selected Pulsars Using LIGO Data Physical Review Letters. | Pubmed ID: 15904354 We place direct upper limits on the amplitude of gravitational waves from 28 isolated radio pulsars by a coherent multidetector analysis of the data collected during the second science run of the LIGO interferometric detectors. These are the first direct upper limits for 26 of the 28 pulsars. We use coordinated radio observations for the first time to build radio-guided phase templates for the expected gravitational-wave signals. The unprecedented sensitivity of the detectors allows us to set strain upper limits as low as a few times 10(-24). These strain limits translate into limits on the equatorial ellipticities of the pulsars, which are smaller than 10(-5) for the four closest pulsars.