LAURA SBARCEA1*, LUCRETIA UDRESCU2, LIANA DRAGAN1, CRISTINA TRANDAFIRESCU1, MARIUS BOJITA3 1 Victor Babeo” University of Medicine and Pharmacy, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, 2 Eftimie Murgu Square, 300041, Timiooara, Romania 2 Victor Babeo” University of Medicine and Pharmacy, Faculty of Pharmacy, Department of Drug Analysis , 2 Eftimie Murgu Square, 300041, Timio...

Spirogyra nucleoli were shown by three-dimensional optical microscopy of DAPI fluorescence to contain DNA with a pattern and distribution matching those of the fibrillar centres. This was confirmed using different species with nucleoli showing different sizes of fibrillar centre. Much lower levels of fluorescence were seen corresponding to the dense fibrillar component. Nearly all the DAPI fluo...

Microorganisms, including bacteria, fungi, protozoa, and microalgae, are composed predominantly of water which prohibits direct observation in a traditional scanning electron microscope (SEM). Preparation for SEM requires that microorganisms be fixed, frozen or dehydrated, and coated with a conductive film before observation in a high vacuum environment. Sample preparation may mechanically dist...

aims: heavy metals are the main pollutants in nature. chromium is a heavy metal which is widely used. hexavalent chromium solubility and mobility in aqueous solutions is so high and it is easily reduced. biosorption is a process in which heavy metals are uptake through passive binding by nonliving biomass from aqueous solutions. the present study aimed to determine the capability of powdered sp...