Beat-to-beat variability of the QT interval (QTV) is sought to provide an indirect noninvasive measure of sympathetic nerve activity, but a formal quantification of this relationship has not been provided. In this study we used power contribution analysis to study the relationship between QTV and muscle sympathetic nerve activity (MSNA). ECG and MSNA were recorded in 10 healthy subjects in the ...

In support of a large, combined Australia-United States of America military exercise at Shoalwater Bay in south-eastern Queensland during March 1997 (TANDEM THRUST 97), the United States Navy sent the Deployed Public Health Laboratory (DPHL) into the field with the forces. The purpose of this was preventative medicine as well as disease and vector surveillance. Among the numerous potential thre...

The rivers of south-eastern Australia flow within a complex meander tract (Coonambidgal Formation) formed by phases Quaternary stream activity. Pumping tests, hydrochemistry and groundwater monitoring the Campaspe, Loddon Murray River Valleys show that for significant parts their courses, associated strip aquifers form single integrated hydraulic unit perched above disconnected from regional wa...

Abstract Perennial rivers in desert regions are relevant environments that tend to concentrate most ecosystem services and values, but not as studied much intermittent ephemeral rivers. This article reports on the main morphological ecological features of Silala River, a narrow permanent river arid region Antofagasta, north Chile. The study was motivated by dispute between Chile Bolivia concern...

Laboratory methods and questionnaires to assess the relative reinforcing value of food (RRV-F) have been developed, but this is the first study to validate an online questionnaire measure of the RRV-F. Participants (281 college students) completed an online survey assessing demographic variables, food preferences, and the RRV-F. A subsample (n=21) also completed a laboratory food choice session...

Ivan Havel remembers when in the late 1970s the Czechoslovakian state police began watching his apartment. For months he had been hosting unofficial science seminars, and the police didn't like it. "It politicized me, says the soft-spoken computer scientist and brother of Czechoslovakian president Vaclav Havel. "The police would check the people who came and ask them to identify 'themselves. Th...

Water quantity and quality joint operation is a new mode in the present dams' operation research. It has become a hot topic in governmental efforts toward integrated basin improvement. This paper coupled a water quantity and quality joint operation model (QCmode) and genetic algorithm with Soil and Water Assessment Tool (SWAT). Together, these tools were used to explore a reasonable operation o...

Soil mapping is a permanent demand, but the traditional method does not allow fast execution and low cost. Digital soil (DSM) aims to improve process by working with models that treat spatial variability quantitatively. In this perspective, objective of study perform DSM Parnaíba River Delta, Northeastern Brazil, through decision tree (DT) integration technique using set attributes derived from...

Sea Level Rise (SLR) caused by climate change is impacting coastal wetlands around the globe. Due to their distinctive biophysical characteristics and unique plant communities, freshwater tidal wetlands are expected to exhibit a different response to SLR as compared with the better studied salt marshes. In this study we employed the Sea Level Affecting Marshes Model (SLAMM), which simulates reg...