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    Wyświetlanie 1-3 z 3
    Tytuł:
    Heart-rate Monitoring System Design and Analysis Using a Nios II Soft-core Processor
    Autorzy:
    Lim, C. K.
    Jambek, A.B.
    Hashim, U.
    Powiązania:
    https://bibliotekanauki.pl/articles/226033.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    pulse sensor
    PPG
    heart rate
    FPGA
    Nios II
    Opis:
    The heart rate of a person is able to tell whether they are healthy. A heart-rate monitoring device is able to measure or record the heart rate of a person in real time, whether it is an electrocardiogram (ECG) or a photoplethysmogram (PPG). In this work, a microprocessor system loaded with a heart-rate monitoring algorithm is implemented. The microprocessor system is the Nios II processor system, which interfaces with an analogue-to-digital converter (ADC) and a pulse sensor. A beat-finding algorithm is used in the microprocessor system for heart rate measurement. An experiment is carried out to analyse the functionality of the microprocessor system loaded with the algorithm. The results show that the detected heart rate is in the range of the average human being’s heart rate. The signal flow within the microprocessor system is observed and analysed using SignalTap II from Quartus’ software. Based on a power analysis report, the proposed microprocessor system has a total power dissipation of around 218.26 mW.
    Źródło:
    International Journal of Electronics and Telecommunications; 2016, 62, 3; 283-288
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Radiological Dose and Risk Assessment for Selected Residential Regions in Baghdad City, Iraq
    Autorzy:
    Sabri, Areej Adnan
    Al-Tameemi, Nabeel Hashim Ameen
    Abdulwahid, Safaa Talib
    Mohammad, Abbas Neamah
    Powiązania:
    https://bibliotekanauki.pl/articles/1071454.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    137Cs
    232Th
    238U
    40K
    Baghdad
    Natural radioactivity
    RESRAD code
    radiological hazards
    radionuclides
    Opis:
    Fifty-one surface soil samples were collected from two selected residential areas in Baghdad city (Al-Adhamiya and Al-Sha’ab areas) and analyzed using gamma-ray spectroscopy system. The activity concentrations of 238U, 232Th, 40K and 137Cs for soil samples collected from Al-Adhamiya area ranged from 9.19 to 22.7 Bq/kg, 5.91 to 17.8 Bq/kg, 236.36 to 507.56 Bq/kg and below minimum detectable activity to 3.07 Bq/kg, respectively. For soil samples collected from Al-Sha’ab area, the activity concentrations of 238U, 232Th, 40K and 137Cs ranged from 9.21 to 24.51 Bq/kg, 6.41 to 16.81 Bq/kg, 246.32 to 402.78 Bq/kg and below minimum detectable activity to 4.8 Bq/kg, respectively. The RESRAD-Onsite code version 7.2 has been used to evaluate radiation dose and risk for the occupants of the areas of the study. The maximum total dose rates of 0.204 and 0.245 mSv/y were estimated for Al-Adhamiya and Al-Sha’ab areas, respectively. The total peak dose rates are about 5 times lower than the public radiation dose limit of 1 mSv/y. Based on the findings of the current study, it can be concluded that occupants in the investigated areas would not get any unacceptable radiological hazards due to radionuclides in soil.
    Źródło:
    World Scientific News; 2019, 122; 71-82
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurement of Radon-222 Concentrations in Selected Soil Samples in Al-Mothafeen Area (Kerbala, Iraq) by Using the CN-85 Detector
    Autorzy:
    Ibrahim, Abrrar Abbas
    Hashim, Abdalsattar Kareem
    Abojassim, Ali Abid
    Powiązania:
    https://bibliotekanauki.pl/articles/2088173.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
    Tematy:
    alpha emitters
    222Rn
    226Ra
    238U
    annual effective dose
    soil
    CN-85
    Kerbala University
    Opis:
    In this work, alpha emitters in the twenty soil samples in Al-Mothafeen sites were measured using the CN-85 detectors. The results show that the average values of radon concentration in the air space of the tube and in the sample were 163.15±3.37 Bq/m3 and 5090.54±155.3 Bq/m3, respectively, while the results of annual effective dose were varied from 10.2±0.3 mSv/y to 2.1±0.1 mSv/y with a mean value of 4.1±0.2 mSv/y, radium content were varied from 0.3±0.06 Bq/kg-1 to 0.06±0.02 Bq/kg with a mean value of 0.12±0.03 Bq/kg, and uranium contractions were varied from 9.29±0.33 Bq/kg to 1.90±0.15 Bq/kg with an average of 3.72±0.21 Bq/kg. Also, the average values of mass and surface exhalation rates were 0.95±8.64 mBq/kg.h and 44.59±0.79 mBq/m2.h, respectively. The results were within the normal limits of radiation, according to the International Commission on Radiological Protection (ICRP).
    Źródło:
    Polish Journal of Soil Science; 2021, 54, 2; 139-153
    0079-2985
    Pojawia się w:
    Polish Journal of Soil Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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