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    Wyświetlanie 1-4 z 4
    Tytuł:
    Design of a Hold-off Time Control Circuit for Geiger-mode Avalanche Photodiodes
    Autorzy:
    Deng, S.
    Morrison A., P.
    Powiązania:
    https://bibliotekanauki.pl/articles/397973.pdf
    Data publikacji:
    2012
    Wydawca:
    Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
    Tematy:
    fotodioda lawinowa
    GM-ADP
    impuls wtórny
    obwód gaszący
    Geiger-mode avalanche photodiodes
    GM-APD
    afterpulsing
    quench circuit
    hold-off time
    Opis:
    A high-resolution hold-off time control circuit for Geiger-mode avalanche photodiodes (GM-APDs) that enables linear changes to the hold-off time from several nanoseconds to microseconds is presented. The resolution of the hold-off time can be varied from nanoseconds to tens of nanoseconds with a range up to microseconds to cater for a variety of GM-APDs. This circuit allows setting of the optimal 'afterpulse-free' hold-off time for any GM-APD through digital inputs or additional signal processing circuitry. With this circuit, the APD is automatically reset following the end of the hold-off period that further simplifies the end-user's control. A layout of this circuit is designed using a conventional 0.15 μm complementary metal oxide semiconductor (CMOS) process, resulting a area of 95 μm x 55 μm which makes it suitable for use with APD arrays.
    Źródło:
    International Journal of Microelectronics and Computer Science; 2012, 3, 2; 53-59
    2080-8755
    2353-9607
    Pojawia się w:
    International Journal of Microelectronics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The need for specific first aid and emergency knowledge whilst trekking in remote areas – results of the ADEMED (Aachen DEntal and MEDical) Expedition to the Annapurna region, Nepal
    Autorzy:
    Scharfenberg, C.
    Lechner, K.
    Giet, S. v.d.
    Hettlich, M.
    Schöffl, V.
    Morrison, A.
    Küpper, Thomas
    Powiązania:
    https://bibliotekanauki.pl/articles/2098229.pdf
    Data publikacji:
    2021-03-08
    Wydawca:
    Państwowa Wyższa Szkoła Zawodowa w Tarnowie
    Tematy:
    trekking
    emergencies
    accidents
    first aid
    training
    Opis:
    Introduction: Fellow trekkers are often the first responders to their comrades in remote settings. Not everyone undertakes First Aid (FA) training when travelling to remote settings away from comprehensive healthcare, whether travelling independently or in a group. The syllabus of standard urbanised FA courses does not fully cover the needs of such trekkers (ie altitude illnesses). We evaluated the FA and emergency knowledge of trekkers en route in the remote Nepalese Himalayas.Material and methods: A questionnaire about FA, trekking emergencies and water hygiene knowledge was completed by a cohort of 453 trekkers passing through Manang (3,519 m), Nepal, who volunteered their participation. A previously validated questionnaire consisted of 20 multiple choice questions (each using a five-point Likert scale) was used, followed by a subjective self-assessment of 17 key topics using a 5-point rating scale from very good to unsatisfactory knowledge. Demographic data including FA and climbing experience was also collected.Results: The participants generally showed a poor knowledge in FA and trekking emergencies, even though 20.8% had some occupational medical training. In total 59.5% of possible answers were answered correctly. On average each participant managed to answer only one out of 20 questions (5.4%) completely correct. The most unsatisfactory results concerned the following topics, each with only 2.4% correct answers: hypothermia/resuscitation, rescue strategies and rip fractures. The best results were for HACE 33.8%, cranio-cerebral injury 33.6%, angina pectoris/heart attack 31.8% and hypovolemic shock 28.7%. The majority of participants had very limited experience of climbing mountains, rock climbing or ice climbing.Conclusions: This study provides essential data identifying deficiencies in standard FA courses that are targeted for urban settings, and not for trekkers in a remote setting far away from comprehensive health care and rescue. There is a need to develop readily accessible FA curriculums specific to trekkers that would provide education on preventative care prior to, during, and after treks, and to improve their knowledge of medical care of trekking injuries and emergencies.
    Źródło:
    Health Promotion & Physical Activity; 2021, 14, 1; 17-24
    2544-9117
    Pojawia się w:
    Health Promotion & Physical Activity
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Canonization and Diagonalization of an Infinite Dimensional Noncanonical Hamiltonian System: Linear Vlasov Theory
    Autorzy:
    Morrison, P. J.
    Shadwick, B. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1931280.pdf
    Data publikacji:
    1994-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    52.25.Dg
    52.25.Mq
    52.35.Fp
    Opis:
    The Vlasov-Poisson equation, which is an infinite dimensional non-canonical Hamiltonian system, is linearized about a stable homogeneous equilibrium. Canonical variables for the resulting linear system are obtained. A coordinate transformation is introduced that brings the system, which possesses a continuous spectrum, into the action-angle form where the linearized energy is diagonal.
    Źródło:
    Acta Physica Polonica A; 1994, 85, 4; 759-769
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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