Ecolab

About: Ecolab is a company organization based out in Northwich, United Kingdom. It is known for research contribution in the topics: Alkyl & Corrosion. The organization has 2860 authors who have published 3193 publications receiving 51478 citations. The organization is also known as: Economics Laboratory.

Stable liquid enzyme compositions with enhanced activity

Abstract: The present invention relates to a liquid enzyme cleaning composition in which the enzyme is stable at alkaline pH and in the presence of water at concentrations of at least about 50 to about 60 weight percent. In one embodiment, the composition of the inventive stabilizes the enzyme with potassium borate.

The medieval climate anomaly and the little Ice Age in coastal Syria inferred from pollen-derived palaeoclimatic patterns

Abstract: The alluvial deposits of a small spring valley near Jableh, in north-western coastal Syria, provides a unique record of environmental history covering the last 1000 years. The pollen-derived climatic proxy inferred from a 315 cm deep core of alluvial deposits suggests that a shift towards wetter climatic conditions occurred from circa (ca.) 1000 to 1250 calibrated (cal) yr AD. This period is situated within the time frame of the Medieval Climate Anomaly. The reconstructed temperature trends show that the warming during this medieval episode was not as high as the modern scores, except for short intervals during the early 12th century AD. The core also recorded a shift towards drier conditions starting during the late 12th century AD, which represents the Eastern Mediterranean expression of the European "Great Famine" climatic event. The main dry and cool interval recorded in coastal Syria occurred from ca. 1520 to 1870 cal yr AD, a time frame encompassing the Little Ice Age. In Mediterranean Syria, the Little Ice Age is not only cooler, but also much drier than the Medieval Climate Anomaly and the present-day climate. Despite a strong human presence in coastal Syria throughout the last millennia, climate rather than anthropogenic activity seems to be the driving force behind the natural vegetation dynamics in this region.

The role of storm flows in concentration of pesticides associated with particulate and dissolved fractions as a threat to aquatic ecosystems - Case study: the agricultural watershed of Save river (Southwest of France)

Abstract: Key-words: pesticide, TSM, DOC, hysteresis patterns, flood flow Measurement of the fluxes of pesticides was carried out for a year, ending in March 2009, in the Save catchment, in the vicinity of Toulouse. The hydrograph separation technique was used to evaluate the respective contribution of stormflow and baseflow in transport of 12 pesticide molecules. Transport of over 59% of pesticides and their controlling factors such as total suspended matter (TSM), particulate organic carbon (POC) and dissolved organic carbon (DOC) occurred during storm periods. Hysteresis patterns could be observed in the concentration-discharge relationships only for some molecules between rising and falling periods of the storm hydrograph. Clockwise hysteresis was noticed for low to moderately soluble pesticide molecules and for particulate fractions, which explains the role of surface runoff in pesticide displacement. In contrast, anticlockwise hysteresis was registered for soluble molecules and dissolved fractions, explaining the role of subsurface flows and soil leaching processes. The important role of TSM, POC and DOC in pesticide transport was clearly established. We also came to the conclusion that the role of stormy periods in pesticide movement and their controlling factors worked as a threat to aquatic ecosystems. And there was a positive relation between riverine TSM, POC, DOC and pesticides according to pesticide properties.