Tropical rivers and wetlands are recognized as one of the greatest most abundant ecosystems in terms ecological social benefits. However, climate change, damming, overfishing, water pollution, introduction exotic species threaten these ecosystems, which puts about 65% river flow aquatic under a moderate to high level threat. This paper aims assess environmental Selangor River based on hydrologi...

OBJECTIVE To describe the occupational background of cases with an asbestos-related disease and to present overall mesothelioma risks across industries with historical exposure to asbestos. METHODS For the period 1990-2000, cases were collected from records held by two law firms. Information on jobs held, previous employers, activities performed and specific products used were obtained from p...

Using panel data, this paper tests whether public and private capital have a positive and significant effect on aggregate output and labor productivity for Mexico during the 1960-2001 period. The richer information set made possible by the sectorial data enables this study to utilize the methodologically sound “group-mean” Fully Modified Ordinary Least Squares (FMOLS) procedure developed by Ped...

Using panel data, this paper tests whether public and private capital have a positive and significant effect on aggregate output and labor productivity for Mexico during the 1960-2001 period. The richer information set made possible by the sectorial data enables this study to utilize the methodologically sound “group-mean” Fully Modified Ordinary Least Squares (FMOLS) procedure developed by Ped...

The uncertainty in mean discharge from two large South American rivers (the Amazonas at Obidos, Brazil, and the Parana at Corrientes, Argentina) resulting from variation in the data used to fit rating curves at the two sites is evaluated. For the Amazonas at Obidos, where mean annual discharge over the 27-year period 19701996 was 164 200 m s'\ uncertainty arising from rating curve variability a...

Interpretation of NO3? variability recorded in ice cores remains challenging as it can be lost from snow. Here, we present 60-year records and its isotopic composition (?15N, ?18O, ?17O) snow central Antarctica, Dome A. In the upper ?90 cm snowpack, variations concentration are dominated by photolytic loss, ?18O ?17O associated with recycling NOx to condensed phase driven photolysis. deeper sno...

Abstract. Volcanic eruptions have a significant impact on global temperature; their consequences are of particular interest in regions that especially sensitive to climate change, like the Tibetan Plateau. In this study, we develop temperature-sensitive tree-ring-width standard chronology covering period 1348–2014 CE using Qilian juniper (Sabina przewalskii (Kom.)) samples collected from Animaq...