The use of visual representations in which pixel-size and local neighborhood topology are not constant is termed space-variant vision. This is the dominant visual architecture in all higher vertebrate visual systems, and is coming to play an important role in real-time active vision applications in the form of log-polar, foveating pyramid, and related approaches to machine vision. The breaking ...

The transformation of chemical energy into mechanical energy is elementary in our lives, not only moving cars and airplanes, but pumping blood in our bodies and moving our eyeballs as we read these lines. The reverse action, defined as mechanochemistry [1–3], is to make chemical transformations using mechanical force, and finding simple examples may be challenging for people unfamiliar with

Grammothele lineata, an endophyte isolated in our laboratory from jute (Corchorus olitorius acc. 2015) was found to be a substantial paclitaxel producer. Taxol and its related compounds, produced by this endophyte were extracted by growing the fungus in simple nutrient media (potato dextrose broth, PDB). Taxol was identified and characterized by different analytical techniques (TLC, HPLC, FTIR,...

An increase in ambient carbonaceous particle (CNP) levels has been found, potentially leading to significant environmental/health hazards. These particles will ultimately enter the oceanic environment and interact with dissolved organic carbon. However, a detailed mechanistic understanding of their behavior, transport, and fate in marine systems is still much needed. This study, using carbon bl...

The response of coastal phytoplankton community to increased nutrient concentrations was examined over a period of 20 days in the summer period on the NE Mediterranean coast. Two different nutrient enrichments were performed. The enrichment treatments received N, P and Si at a ratio of 15 N: 5 Si: 1 P. Two different doses of nutrients (1x and 2x) were applied. The abundance and biomass of the p...

The aim of this biomedical trial was to clarify the physiological role of procalcitonin (PCT) in renal parenchyma apoptosis and fibrosis caused by acute childhood pyelonephritis. This prospective study enrolled 183 children. All children were treated with bi-therapy according to the French consensus on acute pyelonephritis treatment dated November 16, 1990: intra-vascular administration of ceft...

Despite its limited solubility at neutral pH, aluminium is significantly accumulated by the freshwater snail Lymnaea stagnalis, leading to behavioral toxicity. Both organic (humic acid) and non-organic (oligomeric silicic acid) ligands have been shown to reduce Al accumulation probably owing to their binding affinity for Al. This study examined the effect of these ligands on behavioral response...

tissue metal accumulations (gills, liver, kidney and muscle) in persian sturgeon (acipenser persicus) were compared folowing exposure to sublethal levels of waterborne cd (50, 400 and 1000 μg•l-1) after periods of 1, 2, 4 and 14 days. the obtained results indicate that at the end of 4 and 14 days of exposure, total tissue cadmium concentration followed the pattern: liver > gill > kidney > muscl...

tissue metal accumulations (gills, liver, kidney and muscle) in persian sturgeon (acipenser persicus) were compared folowing exposure to sublethal levels of waterborne cd (50, 400 and 1000 μg•l-1) after periods of 1, 2, 4 and 14 days. the obtained results indicate that at the end of 4 and 14 days of exposure, total tissue cadmium concentration followed the pattern: liver > gill > kidney > muscl...