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Feasibility of performing laboratory tests in the paediatrician´s office
HOLOUBKOVÁ, Hana
The thesis deals with feasibility of performing laboratory tests in the paediatrician´s office. The objective of my thesis was to learn about the current state of feasibility of performing laboratory tests right in the paediatrician´s office. To meet this objective I distributed questionnaires and visited twenty randomly selected pediatricians. Thereby I got familiar with the structure of tests used in paediatric practice. I have learnt to perform and interpret relevant laboratory methods. The theoretical part of the thesis gives an account of examinations carried out in paediatricians´ offices. It deals in detail with laboratory analyses performed on urine, blood, stool and swab samples. The practical part gives a description of techniques of particular methods and their current use in paediatricians´ offices. These methods are chemical examination of urine by using urinalysis reagent strips, examination of the urine sediment, Uricult examination, C-reactive protein determination, determination of sedimentation rate, determination of glycemia using glucometer, test for occult bleeding, rotavirus and adenovirus assay, Dentocult examination and detection of Streptococcus pyogenes. The results shown in graphs illustrate how frequently the methods are performed.
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Initial velocities of free-settling spherical particle
Chára, Zdeněk ; Kysela, Bohuš
The paper deals with experimental research of the initial phase of free-settling spherical particle which density is close to the density of water. The experiments were carried out with a smooth particle as well as with a particle with a rough surface. The obtained results show that in the initial phase of sedimentation, there is a formation of vortex structures, which are reflected in the increase of resistance in coefficient values.
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Effect of ultrasound pulsations on suspension sedimentation
Suchánková, A. ; Kysela, Bohuš ; Chára, Zdeněk ; Ditl, P.
The paper presents results of a gravity settling of a model suspension. Experiments have been carried out for two configurations. The first experiment involved natural gravity settling; in the second case the ultrasound pulsations were introduced. Ultrasound field was provided by 20 kHz horn acting through a wall of settling vessel. Three kaolin suspensions of volume concentrations 3.8; 7.6; 11.4 % were used. It has been found that there is no significant influence of ultrasound pulsations on suspension settling.
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Phosphorus release from sediments - a comparison of methods
Borovec, Jakub ; Brzáková, Martina
Phosphorus release rates from sediments were compared at two localities of Jordan Reservoir (Czech Republic) during the year. The release rates measured by incubation method were an order of magnitude higher comparing to the release rates calculated from phosphorus gradient in pore-water. A rapid decomposition of freshly settled seston at the sediment surface or just above the sediment was suggested to explain the differences.
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