Most of what is known about coastal free-living and attached bacterial diversity is based on open coasts, with high particulate and nutrient riverine supply, terrestrial runoffs, and anthropogenic activities. The Magdalen Islands in the Gulf of St. Lawrence (Canada) are dominated by shallow lagoons with small, relatively pristine catchments and no freshwater input apart from rain. Such conditio...

In the context of global warming, changes in phytoplankton-associated bacterial communities have potential to change biogeochemical cycling and food webs marine ecosystems. Skeletonema is a cosmopolitan diatom genus coastal waters worldwide. Here, we grew strain with its native assemblage at different temperatures examined cell concentrations sp. free-living bacteria, dissolved organic carbon (...

The recycled aggregate obtained by simple crushing and screening of waste concrete has a rough surface many protruding edges corners, most the is attached with old mortar, when directly used as in concrete, water demand large, strength elastic modulus are low, durability poor. Therefore, proper treatment required.This article summarizes research status pretreatment methods mechanical strengthen...

Through their metabolic activities, microbial populations mediate the impact of high gradient regions on ecological function and productivity of the highly dynamic Columbia River coastal margin (CRCM). A 2226-probe oligonucleotide DNA microarray was developed to investigate expression patterns for microbial genes involved in nitrogen and carbon metabolism in the CRCM. Initial experiments with t...

The Neotropical detritivorous catfish Panaque nigrolineatus imbibes large quantities of wood as part of its diet. Due to the interest in cellulose, hemi-cellulose and lignin degradation pathways, this organism provides an interesting model system for the detection of novel microbial catabolism. In this study, we characterize the microbial community present in different regions of the alimentary...

Wastewater treatment systems are predominantly based on biological processes that in principle derive energy from biochemical reactions involving substrate degradation available in the raw waste. The most commonly used technologies are suspended medium (activated sludge process), and attached growth or biofilm based technologies (tricking filters). In these processes, the key players responsibl...

conclusions zataria essence, at concentrations of 50 and 25 mg/ml, effectively removed candida cells that had adhered to the denture surface, similar to the level of removal observed for 100000 iu nystatin. objectives the purpose of the present study was to evaluate the antifungal effect zataria multiflora essence in removing of candida albicans biofilms on experimentally contaminated resin acr...