Search Results (36)
Normobaric hyperoxia: haemodynamic responses to acute and long-term exposure
The aim of the present thesis was to examine the effect of acute and long-term normobaric hyperoxic exposure on selected haemodynamic and haematological responses during resting and exercise conditions in healthy aerobically well-trained males. This purpose was evaluated in four separate studies, and each of them had a specific aim …
Plasma treatment of polymers for biomedical applications
Vascular grafts made of polyethyleneterephthalate (PET) polymers have successfully replaced large-diameter blood vessels, but the long-term performance of small-diameter (< 6 mm) vascular grafts is still disappointing. The main problem is insufficient biocompatibility of polymer surface with blood, which causes complications after implementation; such as thrombosis or restenosis. These complications …
Speciation of aluminium in human serum by CIM® (Convective Interaction Media) monolithic chromatography and mass spectrometry
The toxicity, biological availability and mobility of aluminium (Al) depend on its chemical form. In order to understand toxicity and transport of Al in human body it is important to identify and quantify Al species present in human serum. This led to the development of sensitive and selective analytical methods …
Measuring the probability for heterogenous recombination of hydrogen and oxygen atoms on surfaces of fusion relevant materials
This thesis presents studies of probability of heterogeneous recombination of oxygen and hydrogen atoms on surfaces of different types of carbon-based materials. The probability of heterogenous recombination is described with a quantity called recombination coefficient, which is defined as the probability that an atom which impinges upon a solid surface …
Plasma sterilization of microorganisms
The sterilization efficiency of oxygen plasma was studied. Plasma was created in pure oxygen with an inductively coupled radiofrequency discharge. The discharge power was estimated to about 180 W. Plasma parameters were measured with a double Langmuir probe and a catalytic probe. Plasma parameters depended on pressure in the discharge …
Analysis of bacteria damages caused by treatment with oxygen plasma particles
The possible mechanisms for destruction of two types of bacteria with oxygen radicals were studied. Samples consisting of standard ATCC strains of Gram – positive bacteria Staphylococcus aureus and Gram – negative bacteria Escherichia coli were obtained. Bacteria were cultivated according to the standard procedures and fixed on substrates of …