John L. Dwyer

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a r t i c l e i n f o Geological Survey (USGS) are developing the successor mission to Landsat 7 that is currently known as the Landsat Data Continuity Mission (LDCM). NASA is responsible for building and launching the LDCM satellite observatory. USGS is building the ground system and will assume responsibility for satellite operations and for collecting,(More)
a Canadian Forest Service, Pacific Forestry Centre, Natural Resources Canada, Victoria, BC, V8Z 1M5, Canada b Biospheric Sciences Branch, NASA Goddard Space Flight Center, Greenbelt, MD, USA c United States Geological Survey, Center for Earth Resources Observation and Science (EROS), 47914 252nd Street, Sioux Falls, SD 57198-0001, USA d Geographic(More)
BACKGROUND To assess the prevalence and increase awareness of Neisseria gonorrhoeae and Chlamydia trachomatis infections among men who have sex with men, a screening program was conducted at three inner-city homosexual entertainment venues and one community function. STUDY DESIGN Each venue was accessed twice over a 3-month period between March and June(More)
BACKGROUND The objectives of the present study were: to determine the sensitivity and specificity of oral fluid testing compared with the performance of standard blood-based HIV enzyme immunoassay; to assess the feasibility of oral fluid specimen collection from clients for the purposes of HIV testing within a clinical setting; and to assess the clinical(More)
We evaluated a method for the densitometric quantitation of the electrophoretic lipoprotein fractions that sets the limit of integration at the beta-lipoprotein peak maximum. Results were compared with the more conventional method of placing the limit of integration in the valley between the beta- and pre-beta-lipoprotein peaks. The criterion of symmetrical(More)
BACKGROUND It is known that asthma is related to obesity but also to small birthweight. The objective of this study was to clarify this issue by assessing the putative relationship between the changes in corpulence between birth and childhood as assessed by body mass index (BMI) and asthma phenotypes. METHODS The following status in corpulence was(More)