The high molecular-weight carbohydrate substances extracted in the aqueous and phenol phases by phenol-water extraction of Anabaena flos-aquae A-37 were found to be polysaccharides without lipid attached.

The cyanobacterium Anabaena flos-aquae (strain 1444) grown at different intensities o f white light (900. 3500 and 30000 lux) showed changes in the content and com position o f the pigments. Phycocyanin was more affected by high light conditions during growth than chlorophyll a. In comparison to in low white light grown cyanobacteria number o f phycobilisom es and thylakoids decreased under str...

The presence of non-Gaussian ambient channel noise in wireless systems can degrade the performance of existing equalizers and signal detectors. In this paper, we investigate the problem of blind equalization in noisy communication channels by addressing the negative e6ects of heavy-tailed noise to the original constant modulus algorithm (CMA). We propose a new CM criterion employing fractional ...

Glycolic acid oxidase activity was detected in cell-free preparations of Anabaena flos-aquae and Oscillatoria sp. by the reduction of 2,6-dichlorophenolindophenol and by the formation of glyoxylate. Enzyme activity was localized in the 20,000 times gravity supernatant fraction, and optimal activity was obtained at pH 8.0. Activity was lost on storing the preparation at 4 C and could not be rest...

A standardised profiling method based on liquid chromatography with diode array and electrospray ionisation/mass spectrometry (LC–DAD–ESI/MS) was used to identify 46 flavonoids and 17 caffeic acid derivatives in the aqueous methanol extract of Flos chrysanthemum (Chrysanthemum morifolium Ramat) (Compositae), an important Chinese herb. Fifteen caffeoylquinic acids and 15 flavonoids were positive...

The buoyancy organelles of aquatic microorganisms have to meet stringent specifications: allowing gases to equilibrate freely across the proteinaceous shell, preventing the condensation of water vapor inside the hollow cavity, and resisting collapse under hydrostatic pressures that vary with column depth. These properties are provided by the 7–8 kDa gas vesicle protein A (GvpA), repeats of whic...

The buoyancy organelles of aquatic microorganisms have to meet stringent specifications: allowing gases to equilibrate freely across the proteinaceous shell, preventing the condensation of water vapor inside the hollow cavity and resisting collapse under hydrostatic pressures that vary with column depth. These properties are provided by the 7- to 8-kDa gas vesicle protein A (GvpA), repeats of w...

Jovis Johny1, Partha Sarathi Sarkar2, Deepali Saxena3, Babu Philip4 1Post-graduate Resident, Department of Radiology, ST. Johns Hospital, Bengaluru, Karnataka, India, 2Senior Resident, Department of Radiology, ST. Johns Hospital, Bengaluru, Karnataka, India, 3Associate Professor, Department of Radiology, ST. Johns Hospital, Bengaluru, Karnataka, India, 4Professor, Department of Radiology, ST. J...