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    Wyświetlanie 1-6 z 6
    Tytuł:
    Detection of illicit chemicals by portable Raman spectrometer
    Autorzy:
    Smulko, J.
    Kwiatkowski, A.
    Gnyba, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/200103.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Raman spectroscopy
    chemical detection
    lasers
    detection efficiency
    Opis:
    The Raman spectrometers can be built as the portable devices and can be used in various places to detect illicit chemicals. This method has become popular due to deficiency of other fast methods that could be applied against terrorist attacks or could help police at their work. The Conception of a portable Raman spectrometer has been presented. The Description enclosures the presentation of the prepared device and its possible applications by presenting exemplary detection results.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2011, 59, 4; 449-452
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterization of some modern scintillators recommended for use on large fusion facilities in γ-ray spectroscopy and tomographic measurements of γ-emission profiles
    Autorzy:
    Sibczynski, P.
    Broslawski, A.
    Gojska, A.
    Kiptily, V.
    Korolczuk, S.
    Kwiatkowski, R.
    Mianowski, S.
    Moszyński, M.
    Rzadkiewicz, J.
    Swiderski, L.
    Szydlowski, A.
    Zychor, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/146137.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    gamma spectrometry
    scintillators
    decay time
    non-proportionality
    energy resolution
    detection efficiency
    fusion plasma
    Opis:
    LaBr3:Ce,CeBr3 and GAGG:Ce scintillators were investigated and the determined characteristics were compared with those obtained for the well-known and widely used CsI:Tl and NaI:Tl crystals. All the detectors were of the same size of 10 × 10 × 5 mm3. The aim of this test study was to single out scintillation detectors most suitable for γ-ray spectrometry and γ -ray emission radial profile measurements in high-temperature plasma experiments. Decay time, energy resolution, non-proportionality and full energy peak detection efficiency were measured for γ -ray energies up to 1770 keV. Due to their good energy resolution, short decay time and high detection efficiency for MeV gamma rays, LaBr3:Ce and CeBr3 scintillators are proposed as the best candidates for use especially under conditions of high count rates, which are expected in the forthcoming DT experiments.
    Źródło:
    Nukleonika; 2017, 62, 3; 223-228
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Detection of airborne microbes in a composting facility by cultivation based and cultivation-independent methods
    Autorzy:
    Albrecht, A
    Witzenberger, R.
    Bernzen, U.
    Jackel, U.
    Powiązania:
    https://bibliotekanauki.pl/articles/50677.pdf
    Data publikacji:
    2007
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    composting process
    airborne microbe
    humification
    cultivation-independent method
    degradation
    organic material
    bacteria
    fungi
    counting efficiency
    waste management
    detection
    compost
    Opis:
    Standard methods for quantifi cation of airborne bacteria are based on cultivation and counting of grown colonies. From complex natural environments it is known that only a small fraction of the total number of cells can be cultivated on routinely used agar-media. Direct microscopic cell counting after DNA-staining usually generates higher concentrations of one to two magnitudes. The objective of the presented study was to compare the concentrations of airborne bacteria sampled in a composting facility by using for any sample the cultivation on trytic soy agar (TSA) – agar, as well as direct counting after DAPI-staining. The concentrations after counting grown colonies were within a range of 105-107 cfu m-3. Concentrations of direct counted cells ranged between 106-109 microbes m-3. In these comparative measurements only 1.5-15.3% of the airborne bacterial cells enumerated by direct counting formed countable colonies after incubation on TSA-agar. Obviously, cultivation based methods underestimate the real amount of airborne microbes. In addition, from literature it is known that inactive or even dead cells can also have the potential to cause health effects. Consequently, a risk assessment based only on measuring colony forming units may, in some cases, not be sufficient.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2007, 14, 1
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Detection and identification of loss of efficiency faults of flight actuators
    Autorzy:
    Ossmann, D.
    Varga, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/330772.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    aerospace engineering
    fault detection
    fault diagnosis
    loss of efficiency type of faults
    flight actuator faults
    inżynieria lotnicza
    detekcja uszkodzeń
    diagnostyka uszkodzeń
    Opis:
    We propose linear parameter-varying (LPV) model-based approaches to the synthesis of robust fault detection and diagnosis (FDD) systems for loss of efficiency (LOE) faults of flight actuators. The proposed methods are applicable to several types of parametric (or multiplicative) LOE faults such as actuator disconnection, surface damage, actuator power loss or stall loads. For the detection of these parametric faults, advanced LPV-model detection techniques are proposed, which implicitly provide fault identification information. Fast detection of intermittent stall loads (seen as nuisances, rather than faults) is important in enhancing the performance of various fault detection schemes dealing with large input signals. For this case, a dedicated fast identification algorithm is devised. The developed FDD systems are tested on a nonlinear actuator model which is implemented in a full nonlinear aircraft simulation model. This enables the validation of the FDD system’s detection and identification characteristics under realistic conditions.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2015, 25, 1; 53-63
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Telematics tools as the support for unloading bays utilization
    Autorzy:
    Kijewska, K.
    Iwan, S.
    Nürnberg, M.
    Małecki, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/393585.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Stowarzyszenie Telematyki Transportu
    Tematy:
    unloading bays
    city logistics
    efficiency
    mobile devices
    traffic detection
    vehicle sensors
    zatoka rozładowcza
    logistyka miejska
    efektywność
    urządzenia mobilne
    wykrywanie ruchu
    czujniki pojazdów
    Opis:
    Unloading bays are one of the most popular and simple to implement measures in city logistics systems. The main strength of this measure is that it effectively reduces congestion effect due to that loading or unloading operations are realize in special area and not influence directly on traffic flow. However, the most important problem in utilization of unloading bays is their inappropriate use (as a normal parking space, not only for delivery vehicles during the delivering process) and the conflicts between users in the case of few deliveries at the same time and with utilization of the same unloading bay. The way to solve these problems is implementation of the telematics tools. The paper is focused on examples of utilization of mobile devices and sensors as the support for the unloading bays booking and use.
    Źródło:
    Archives of Transport System Telematics; 2018, 11, 4; 23-28
    1899-8208
    Pojawia się w:
    Archives of Transport System Telematics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Enhancement of fungal DNA templates and PCR amplification yield by three types of nanoparticles
    Autorzy:
    Al-Dhabaan, F.A.
    Yousef, H.
    Shoala, T.
    Shaheen, J.
    El Sawi, Y.
    Farag, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/65369.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    plant pathology
    detection
    identification
    plant pathogen
    toxigenic fungi
    improvement
    specificity
    efficiency
    polymerase chain reaction
    Alternaria alternata
    DNA extraction
    nanoparticle
    Rhizoctonia solani
    nanobiotechnology
    Opis:
    Nanodiagonastic methods in plant pathology are used for enhancing detection and identification of different plant pathogens and toxigenic fungi. Improvement of the specificity and efficiency of the polymerase chain reaction (PCR) by using some nanoparticles is emerging as a new area of research. In the current research, silver, zinc, and gold nanoparticles were used to increase the yield of DNA for two plant pathogenic fungi including soil-borne fungus Rhizoctonia solani and toxigenic fungus Alternaria alternata. Gold nanoparticles combined with zinc and silver nanoparticles enhanced both DNA yield and PCR products compared to DNA extraction methods with ALB buffer, sodium dodecyl sulfate, ALBfree from protinase K, ZnNPs and AgNPs. Also, by using ZnNPs and AgNPs the DNA yield was enhanced and the sensitivity of random amplified polymorphic DNA (RAPD) PCR products was increased. Application of nanomaterials in the PCR reaction could increase or decrease the PCR product according to the type of applied nanometal and the type of DNA template. Additions of AuNPs to PCR mix increased both sensitivity and specificity for PCR products of the tested fungi. Thus, the use of these highly stable, commercially available and inexpensive inorganic nano reagents open new opportunities for improving the specificity and sensitivity of PCR amplicon, which is the most important standard method in molecular plant pathology and mycotoxicology.
    Źródło:
    Journal of Plant Protection Research; 2018, 58, 1
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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