National Repository of Grey Literature 231 records found  beginprevious196 - 205nextend  jump to record: Search took 0.00 seconds. 
Different metabolic pathwazy of the origin of hyperhomosysteinemia
Přistoupilová, K. ; Přistoupil, T. I. ; Navrátil, Tomáš ; Heyrovský, Michael ; Šenholdová, Z. ; Kohlíková, E. ; Petr, M.
Our voltammetric method of estimation of thiodiglycolic acid (TDGA) in urine was used in case of a woman suffering from rare inborn inability to metylate homocysteine (HoCySH). The aim of this pilot study was to shed more light on the interrelationship among vitamin B.sub.12./sub., folates, and betaine used for her cure. On the basis of the achieved results we were able to modify our earlier published metabolic scheme. It comprises 3 metabolic pathways starting from serine, and three metabolic pathways starting from HoCySH.
Výzkum atomových vlastností s použitím ionizačního potenciálu a Zlatého poměru
Heyrovská, Rajalakshmi
It was recently shown, that the Golden ratio divides the Bohr radius of hydrogen into the Golden sections due to electrostatistic reasons.
Voltammetric behavior of electrodes on the base of heterogenous silver and graphite composites
Navrátil, Tomáš ; Kopanica, Miloslav ; Šebková, Světlana
The voltammetric behavior of electrodes based on heterogenous silver and graphite composites was tested in this work. Such electrodes are a silver composite electrode, which contains a mixture of silver and graphite powder dispersed in metacrylate resin, and a graphite composite electrode formed by graphite powder in epoxy resin. The use of composite electrodes offers very good alternative to the use of mercury electrodes.
Voltammetric Determination of one of Styrene Metabolites - Phenylglyoxylic Acid - in Urine Using Graphite Composite Electrode
Navrátil, Tomáš ; Shanmugam, K. ; Šenholdová, Z. ; Heyrovský, Michael ; Surovcová, H.
Phenylglyoxylic acid is metabolized in human body from vinylbenzene (styrene) (from which polystyrene is produced). Presented work deals with determination of this metabolite in human urine using carbon composite electrode.
Silver Composite Electrode for Voltammetric Determination of Halides
Šebková, Světlana ; Navrátil, Tomáš ; Kopanica, M.
The application of the silver composite electrode prepared from silver, graphite powder and methacrylate resin for the voltammetric determination of halogenide ions was studied.
Determination of Cystine, Cysteine and Homocysteine in Biological Matrix
Bašová, Pavlína ; Navrátil, Tomáš ; Šestáková, Ivana ; Novotný, Ladislav ; Šenholdová-Dlasková, Z.
In order to determine cystine, cysteine and homocysteine contents separately in a mixture of these compounds in real urine samples from patients suffering from cystinuremia and homocistinuremia, three voltammetric methods were tested: Brdička reaction, reduction of their complexes with copper ions and cathodic reduction of cystine. In all cases the hanging mercury drop electrode was used.
Study of Interactions of Damaged DNA with Osmium Complexes Using Elimination Voltammetry with Linear Scan
Navrátil, Tomáš ; Josypčuk, Bohdan
Complexes of Os(L), where L means tertiary amines, proved to be very effective labels of structure, electroactivity or damage of deoxyribonucleic acid (DNA). In this work thymine- Os(bipyridine) complexes and signals belonging to the catalytic hydrogen evolution were studied using elimination voltammetry with linear scan.
Metabolic Causes of Thiodiglycolic Acid Formation and Importance of its Determination
Šenholdová-Dlasková, Z. ; Navrátil, Tomáš ; Přistoupil, T. ; Přistoupilová, K.
Thiodiglycolic acid (TDGA), is one of the normal products of human metabolism, and occurs at low concentrations in urine. An increased level of TDGA in urine is a sensitive indicator of human organism exposure to some physiologically active or toxic substances, gases and vapors (vinylchloride monomer, etc.). The attention was paid to suggestion and explanation of the metabolic pathways related to thiodiglycolic acid in non-exposed organism.
Electrochemical Behavior of Chosen Chinoxaline-2-on Derivates on the Mercury Electrode
Zimpl, M. ; Navrátil, Tomáš ; Kotouček, M. ; Barták, P. ; Zuman, P.
The mechanism of the electrochemical behavior of 3-substituated derivates of chinoxaline-2-on on the mercury electrode was studied with the aim to explain the behavior of these drugs in human body. Tast and normal pulse polarography, direct current, cyclic, differential voltammetry, elimination voltammetry with linear scan etc. were applied.

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