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    Wyświetlanie 1-5 z 5
    Tytuł:
    Analysis of Free-Space Optics Development
    Autorzy:
    Mikołajczyk, J.
    Bielecki, Z.
    Bugajski, M.
    Piotrowski, J.
    Wojtas, J.
    Gawron, W.
    Szabra, D.
    Prokopiuk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/221245.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    optical communications
    open path laser communications
    line of sight communications
    free space optics
    Opis:
    The article presents state of work in technology of free-space optical communications (Free Space Optics - FSO). Both commercially available optical data links and their further development are described. The main elements and operation limiting factors of FSO systems have been identified. Additionally, analyses of FSO/RF hybrid systems application are included. The main aspects of LasBITer project related to such hybrid technology for security and defence applications are presented.
    Źródło:
    Metrology and Measurement Systems; 2017, 24, 4; 653-674
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Explosives vapors–concentrating and optoelectronic detection
    Autorzy:
    Wojtas, J.
    Rutecka, B.
    Popiel, S.
    Nawała, J.
    Wesołowski, M.
    Mikołajczyk, J.
    Cudziło, S.
    Bielecki, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/221395.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    explosives concentrator
    explosive detection
    optoelectronic sensors
    CEAS sensors
    Opis:
    Detection of explosives vapors is an extremely difficult task. The sensitivity of currently constructed detectors is often insufficient. The paper presents a description of an explosive vapors concentrator that improves the detection limit of some explosives detectors. These detector s have been developed at the Institute of Optoelectronics. The concentrator is especially dedicated to operate with nitrogen oxide detectors. Preliminary measurements show that using the concentrator, the recorded amount of nitrogen dioxide released from a 0.5 ng sample of TNT increases by a factor of approx. 20. In the concentrator an induction heater is applied. Thanks to this and because of the miniaturization of the container with an adsorbing material (approx. 1 cm3), an extremely high rate of tempera ture growth is achieved (up to 500°C within approx. 25 s). The concentration process is controlled by a microcontroller. Compact construction and battery power supply provide a possibility of using the concentrator as a portable device.
    Źródło:
    Metrology and Measurement Systems; 2014, 21, 2; 177-190
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Detection of Gaseous Compounds with Different Techniques
    Autorzy:
    Mikołajczyk, J.
    Bielecki, Z.
    Stacewicz, T.
    Smulko, J.
    Wojtas, J.
    Szabra, D.
    Lentka, Ł.
    Prokopiuk, A.
    Magryta, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/220919.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    gas sensors
    laser absorption spectroscopy
    CEAS
    MUPASS
    breath analyses
    medical screening
    Opis:
    Sensing technology has been developed for detection of gases in some environmental, industrial, medical, and scientific applications. The main tasks of these works is to enhance performance of gas sensors taking into account their different applicability and scenarios of operation. This paper presents the descriptions, comparison and recent progress in some existing gas sensing technologies. Detailed introduction to optical sensing methods is presented. In a general way, other kinds of various sensors, such as catalytic, thermal conductivity, electrochemical, semiconductor and surface acoustic wave ones, are also presented. Furthermore, this paper focuses on performance of the optical method in detecting biomarkers in the exhaled air. There are discussed some examination results of the constructed devices. The devices operated on the basis of enhanced cavity and wavelength modulation spectroscopies. The experimental data used for analyzing applicability of these different sensing technologies in medical screening. Several suggestions related to future development are also discussed.
    Źródło:
    Metrology and Measurement Systems; 2016, 23, 2; 205-224
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sensors and systems for the detection of explosive devices - an overview
    Autorzy:
    Bielecki, Z.
    Janucki, J.
    Kawalec, A.
    Mikołajczyk, J.
    Pałka, N.
    Pasternak, M.
    Pustelny, T.
    Stacewicz, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/221624.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    explosive device sensors
    detection of explosive materials
    Opis:
    The paper presents analyses of current research projects connected with explosive material sensors. Sensors are described assigned to X and γ radiation, optical radiation sensors, as well as detectors applied in gas chromatography, electrochemical and chemical sensors. Furthermore, neutron techniques and magnetic resonance devices were analyzed. Special attention was drawn to optoelectronic sensors of explosive devices.
    Źródło:
    Metrology and Measurement Systems; 2012, 19, 1; 3-28
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    System of Optoelectronic Sensors for Breath Analysis
    Autorzy:
    Mikołajczyk, J.
    Wojtas, J.
    Bielecki, Z.
    Stacewicz, T.
    Szabra, D.
    Magryta, P.
    Prokopiuk, A.
    Tkacz, A.
    Panek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/221463.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    breath analyses
    biomarkers
    laser absorption spectroscopy
    CEAS
    MUPASS
    medical screening
    Opis:
    The paper describes an integrated laser absorption system as a potential tool for breath analysis for clinical diagnostics, online therapy monitoring and metabolic disorder control. The sensors operate basing on cavity enhanced spectroscopy and multi-pass spectroscopy supported by wavelength modulation spectroscopy. The aspects concerning selection of operational spectral range and minimization of interference are also discussed. Tests results of the constructed devices collected with reference samples of biomarkers are also presented. The obtained data provide an opportunity to analyse applicability of optoelectronic sensors in medical screening.
    Źródło:
    Metrology and Measurement Systems; 2016, 23, 3; 481-489
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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