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    Wyświetlanie 1-7 z 7
    Tytuł:
    Non-invasive measurement of chemical compounds levels in human body
    Autorzy:
    Kossowski, T.
    Kossowska, K.
    Stasiński, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/114236.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    glucose level measurement
    NIR spectroscopy
    non-invasive diagnosis
    ethanol level measurement
    Opis:
    The paper presents a system for measuring substances in human body by a combined technique: using visible light and near infrared spectroscopy. The approach is non-invasive, attenuation of radiation by tissues is evaluated. Measurement of two chemical compounds levels is described: that of glucose and of ethylic alcohol (ethanol). The presented measuring system is self-calibrating. Due to this, it is possible to measure changes of compound concentrations in different parts of body, e.g. wrist, arms or legs. The main measurement is done in infrared light (up to 1000 nm), auxiliary ones are performed in visible light (narrow band between 600-680 nm and wide spectrum from around 420 nm to 780 nm - white light). This allows for measurement not only a compound level, but also characteristic properties of tissues in place where measurement is done. Results of measurements are provided and advantages of multi-wavelength measurements discussed.
    Źródło:
    Measurement Automation Monitoring; 2017, 63, 6; 200-202
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Non-invasive blood glucose measurement
    Autorzy:
    Kossowski, T.
    Kossowska, K.
    Stasiński, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/114602.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    glucose level measurement
    IR spectroscopy
    non-invasive diagnosis
    Opis:
    The paper presents a system for measuring blood glucose level based on spectroscopy in the near infrared range. Specific features of this system are limited spectral range of measurements, and the use of visible light detector to identify the density of irradiated tissue and to correct measurement results in the infrared range. Presented are principles of measuring system construction, including measures undertaken to increase its precision and results of tests carried out using the constructed measurement system. The results are close to those obtained from a traditional meter.
    Źródło:
    Measurement Automation Monitoring; 2016, 62, 5; 175-177
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A laboratory stand for the analysis of dynamic properties of thermocouples
    Autorzy:
    Marszałkowski, K.
    Puzdrowska, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2073665.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    heat flow process
    measurement of gas temperature
    parametric diagnosis.
    Opis:
    In the present elaboration, problems connected with measurements of high variable temperatures of gases are introduced and the impact of dynamic properties of different construction solutions of thermoelements on the accuracy of the measurements is considered. A laboratory stand built within research under doctoral thesis, destined for analysis of dynamic properties of thermocouples is also described. Results of numerical simulation of heat exchange between thermocouple and the gas that washes it (in this case - hot air) is presented as well as results of empirical experiments conducted on the laboratory stand built with the analysis of the obtained results.
    Źródło:
    Journal of Polish CIMEEAC; 2015, 10, 1; 117--126
    1231-3998
    Pojawia się w:
    Journal of Polish CIMEEAC
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysing the impact on underwater noise of changes to the parameters of a ship’s machinery
    Autorzy:
    Buszman, Krystian
    Powiązania:
    https://bibliotekanauki.pl/articles/1573917.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    shipping noise
    hydroacoustic passive measurement
    narrowband
    1/3-octave analysis
    diagnosis
    classification
    Opis:
    A ship moving over the surface of water generates disturbances that are perceived as noise, both in the air and under water. Due to its density, water is an excellent medium for transmitting acoustic waves over long distances. This article describes the impact of the settings of a ship’s machinery on the nature of the generated noise. Our analysis includes the frequency characteristics of the noise generated by the moving ship. Data were obtained using an underwater measurement system, and the measured objects were two ships moving on specific trajectories with certain machinery settings. The acquired data were analysed in the frequency domain to explore the possibilities of the acoustic classification of ships and diagnostics of source mechanisms.
    Źródło:
    Polish Maritime Research; 2020, 3; 176-181
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diagnosis of the technical condition of high-tech complexes by probabilistic methods
    Autorzy:
    Budashko, V.
    Sandler, A.
    Shevchenko, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/2086305.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    probabilistic method
    diagnosis
    high-tech complexes
    technical condition
    automated measurement and control
    diagnostic tool
    Opis:
    When designing multilevel systems for monitoring the parameters and characteristics of high-tech complexes, it is necessary to effectively control the state of the elements of generating units. Existing control systems for their specification and technical characteristics do not fully meet the monitoring objectives. The capabilities of existing known systems have limitations on the depth of use and compensation for the impact of operational factors. The article proposes and substantiates the feasibility of using the principle of automated measurement and control of load in high-tech complexes based on the probabilistic approach. It is established that the presence of errors in the means of measurement and control leads to specific errors that should be taken when assessing the quality of control, solving management and control tasks. To register the transition of parameters beyond the limit values, a new sensor circuitry based on fiber-optic elements is proposed. The main difference of the proposed diagnostic tool is the invariance to operational destabilizing factors.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2022, 16, 1; 105--111
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Self-diagnosis method for checking the wayside systems for wheel-rail vertical load measurement
    Autorzy:
    Cortis, D.
    Giulianelli, S.
    Malavasi, G.
    Rossi, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/374395.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    wayside measurement system
    vertical forces
    wheel-rail contact forces
    self-diagnosis methods
    przydrożny system pomiarowy
    siła pionowa
    siły nacisku koło-szyna
    Opis:
    Nowadays, wayside measurement systems of wheel-rail contact forces have acquired great relevance for the monitoring of rolling stock, especially for freight trains. Thanks to these solutions, infrastructure managers can check and monitor the status of rolling stock and, when necessary, impose corrective actions for the railway companies. On the other hand, the evaluation of contact forces is part of the rolling stock authorisation process [1] and a mainstone for the study of the running stability. The data provided by these measurements could give useful information to correlate the wear of the track with the frequency of applied loads, helping in the development of a better maintenance strategy of railway networks [2]. In this paper, the monitoring of vertical forces is based on the SMCV (Vertical Loads Monitoring System) method, where shear strains of the rail web are measured with a simple combination of four electrical strain gauges, placed on both sides of the rail web along each span. The research has identified self-diagnosis methods for the SMCV system to ensure the reliability and the quality of the measurements and to extend the knowledge of the system. The recorded signals have been processed and converted into easily interpretable physical quantities by means of MATLAB® algorithm.
    Źródło:
    Transport Problems; 2017, 12, 4; 91-100
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Neck injury diagnostic device
    Autorzy:
    Mielczarek, A.
    Ritter, R.
    Napieralski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/398051.pdf
    Data publikacji:
    2011
    Wydawca:
    Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
    Tematy:
    uraz szyi
    kręgosłup szyjny
    diagnostyka medyczna
    leczenie
    rehabilitacja
    MEMS
    mikrosystemy
    żyroskop
    czujnik wewnętrzny
    pomiar kąta
    wskaźnik laserowy
    neck injury
    cervical spine
    diagnosis
    treatment
    rehabilitation
    gyroscope
    accelerometer
    inertial sensor
    angle measurement
    laser pointer
    Opis:
    The paper describes a method of automating a medical study of cervical spine condition with use of MEMS inertial sensors and a magnetometer. The examination procedure aims to detect and assess the dysfunction of the cervical spine. The same exercise may be also used for rehabilitation.
    Źródło:
    International Journal of Microelectronics and Computer Science; 2011, 2, 1; 22-27
    2080-8755
    2353-9607
    Pojawia się w:
    International Journal of Microelectronics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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