National Repository of Grey Literature 286 records found  beginprevious275 - 284next  jump to record: Search took 0.02 seconds. 
Mobil meter of pulse rate
BÁRTA, Ivan
This thesis is aimed at the function description of a mobile pulse frequency meter and its use in the sport segment. Parts of this thesis are concept, production and description of the meter. The aim of the thesis was to make out if it is possible to construe the device in amateur conditions and through the measuring verify its functionality.
Films of Metal Nanoparticles Deposited on Semiconductors by Electrophoresis: Technology and Characterization
Žďánský, Karel ; Zavadil, Jiří ; Kacerovský, Pavel ; Kostka, František ; Lorinčík, Jan ; Černohorský, O. ; Fojtík, A. ; Müller, M. ; Kostejn, M.
Layers of nanoparticles in micelle enclosures were deposited on InP substrates by electrophoresis from isooctane colloid solutions containing Pd or Ag nanoparticles. The layers were investigated by SIMS, low-temperature photoluminescence spectroscopy and topography, absorption spectroscopy, Raman spectroscopy and sensitivity to hydrogen. Photoluminescence of InP was enhanced by the layers of Pd or Ag nanoparticles. Schottky barriers made on the n-type InP with layers containing Pd nanoparticles showed significant sensitivity to hydrogen in contrast to those containing Ag nanoparticles.
Optické senzory pro monitorování bioprocesů
Podrazký, Ondřej ; Matějec, Vlastimil ; Kuncová, Gabriela ; Pospíšilová, Marie ; Mrázek, Jan ; Kašík, Ivan ; Rose, K. ; Jaffrezic-Renault, N. ; Dzyadevych, S. ; Šašek, L. ; Scully, P. J.
The contribution presents results of the research of an optical glucose sensor. The detection of oxygen depletion caused by glucose oxidation under glucoseoxidase catalysis was used in the glucose sensors. Fluorescence quenching of ruthenium complexes by oxygen was used for the oxygen detection. The complexes and enzyme were immobilized in inorganic-organic ORMOCER membranes. Developed fiber-optic sensors enable to detect glucose in concentrations up to 3 mmol/L and with response times of about 20s.
Technology LATGS/PtIV single crystal for high sensitivity infrared detectors
Novotný, Jan ; Franc, J. ; Zelinka, Jiří
Single crystals of TGS doped with Pt/IV/ and L-alanin were grown from aqueous solutions. Surface morphology, domain structure and P-E hysteresis loops have been investigated. We have found that LATSGS/Pt/IV/ crystals are excellent materials for construction of infrared detectors.
Preparation and properties of pyroelectric detectors for optoelectronic applications (II)
Novotný, Jan ; Zelinka, Jiří ; Podvalová, Zdislava ; Malina, Václav ; Vávra, Vladimír ; Krechler, Jindřich ; Franc, V. ; Fronc, Václav
Technology of preparation of doped single crystals of triglycine sulphate for application in optoelectronics is described. Internal report contains also technology of preparation of simple pyroelectric detectors which operate in infrared region, wavelengths 2-25ćm. Measurement methods for infrared detectors and their basic technical parameters are presented. The prepared infrared detectors operate as non-cooling elements with hybrid high impedance amplifier.
Preparation and properties of pyroelectric detectors for optoelectronic applications (I)
Novotný, Jan ; Březina, Bohumil ; Zelinka, Jiří ; Malina, Václav ; Vávra, Vladimír ; Zavadil, Jiří ; Velvarský, Jaroslav ; Fronc, Václav ; Pospíšil, Miroslav
The photodetectors operating in the 0.8-20ćm wavelength region have been prepared. The report is devoted to the research and realisation of novel types of materials on the basis TGS single crystals family. The prepared detectors have been tested in static and dynamical regime of operation. The obtained results have been passed on TESLA BLATNÁ Company.

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