STI Research Centre, Marian Villa, Westmead Hospital, 170 Hawkesbury Road, Westmead, NSW 2145, Australia. Department of General Practice, The University of Sydney at Westmead Hospital, PO Box 154, Westmead, NSW 2145, Australia. Albion Street Centre, 150--154 Albion Street, Surry Hills, NSW 2010, Australia. Blue Mountains Sexual Health/HIV Clinic, Blue Mountains Hospital, Great Western Highway, ...

The present study focused on redescription of Gammarus pseudosyriacus (Karaman & Pinkster, 1977) based on new materials from Zagros Mountains and describes a new subspecies of freshwater amphipod, Gammarus pseudosyriacus issatisi subsp. n., from the southern Zagros Mountains. The work is based on morphological and morphometric comparisons. This new subspecies has features similar to Gammarus ps...

CHITRA is a prototype CBIR system we are building. It uses a four layer data model we have developed, and enables retrieval based on high level concepts, such as \retrieve images of MOUNTAINS", and \retrieve images of MOUNTAINS and SUNSET". This paper deals with some issues about query processing encountered in the implementation of the system. The contributions of this paper can be summarized ...

The exchange of chlorinated organic pollutants between air and vegetation in cold, mountain environments was investigated through the extraction of coniferous vegetation and high-volume air samples collected from the Canadian Rocky Mountains during the summers of 1999 and 2000. Concentrations of several compounds in vegetation increased as temperatures decreased, whereas atmospheric concentrati...

The mid-altitude zone of the Qinling Mountains in China was once dominated by birch and pine-oak belts but are now mainly covered by secondary growth following large-scale deforestation. Assessing the recovery and sustainability of these forests is essential for their management and restoration. We investigated and compared the tree species composition and community assemblages of secondary for...

Evaluating conflicting theories about the influence of mountains on carbon dioxide cycling and climate requires understanding weathering fluxes from tectonically uplifting landscapes. The lack of soil production and weathering rate measurements in Earth's most rapidly uplifting mountains has made it difficult to determine whether weathering rates increase or decline in response to rapid erosion...

Mountains on rapidly rotating neutron stars efficiently radiate gravitational waves. The maximum possible size of these mountains depends on the breaking strain of the neutron star crust. With multimillion ion molecular dynamics simulations of Coulomb solids representing the crust, we show that the breaking strain of pure single crystals is very large and that impurities, defects, and grain bou...

Although native to the southeastern United States, the red swamp crayfish (Procambarus clarkii) has become established worldwide through accidental and intentional actions by humans. In the Santa Monica Mountains of southern California, the presence of the omnivorous crayfish is associated with the absence or reduced abundance of native amphibians. The original source of P. clarkii in southern ...

This study compiles and interprets three-dimensional Weather Surveillance Radar-1988 Doppler (WSR88D) data during a 2.5-yr period and examines the typical orographic effects on precipitation mainly associated with winter storms passing over coastal northern California. The three-dimensional mean reflectivity patterns show echo structure that was generally stratiform from over the ocean to inlan...

Introduction: Arsenic contamination of  surface and groundwater has been categorizd among high profile  environmental  problems around the world. The matter is of most concern where unsafe water is used for drinking. Sahand region reservoir in northwest of Iran supplies water for drinking, industrial and agricultural purposes throught  irrigation  of 11000 hectares of l...