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Wyszukujesz frazę "quality assurance (QA)" wg kryterium: Wszystkie pola

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    Wyświetlanie 1-3 z 3
    Tytuł:
    Application of alanine dosimetry in dose assessment for ocular melanoma patients undergoing proton radiotherapy : preliminary results
    Autorzy:
    Mierzwińska, G.
    Kłodowska, M.
    Michalec, B.
    Pędracka, A.
    Rydygier, M.
    Swakoń, J.
    Waligórski, M. P. R.
    Powiązania:
    https://bibliotekanauki.pl/articles/146382.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    alanine
    EPR dosimetry
    proton beam
    proton radiotherapy
    Quality Assurance (QA)
    Opis:
    Basing on alanine solid state/electron paramagnetic resonance (EPR) dosimetry, a supplementary method of cumulatively recording the therapeutic dose received by ocular cancer patients undergoing fractionated proton radiotherapy is proposed. By applying alanine dosimetry during the delivery of consecutive fractions, the dose received within each fraction can be read out by EPR spectrometry and a fi nal permanent cumulative record of the total dose delivered obtained. The dose response of the alanine detector was found to be practically independent on its position within the extended proton Bragg peak region. Dose measurements based on entrance dose recorded in proton beams individually formed for each patient are presented. The described method will be applied as a complementary Quality Assurance procedure for patients undergoing proton radiotherapy at the Institute of Nuclear Physics, Polish Academy of Sciences, Krakow, Poland (IFJ PAN).
    Źródło:
    Nukleonika; 2015, 60, No. 3, part 2; 609-613
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Albanian Higher Education Strategy
    Autorzy:
    Olldashi, Enkeleda
    Koka, Enkelejda
    Powiązania:
    https://bibliotekanauki.pl/articles/1036315.pdf
    Data publikacji:
    2014
    Wydawca:
    Academicus. International Scientific Journal publishing house
    Tematy:
    Bologna Process
    Albanian Higher Education National Strategy
    Higher Education Area in Europe (EHEA)
    Social dimension
    Quality Assurance (QA) Institutions
    Opis:
    Since its inception, the governments of 29 European countries (member states of the Bologna Declaration in 1999) had as their main target the creation of a common and coherent system of Higher Education Area in Europe (EHEA). The main intention for the creation of a ‘European Education Area’ was the fostering of student mobility and employability in order to strengthen competition and to make the European Higher Education more attractive. The main focus of this paper is the analysis of the National Periodic Reports for the period 2004-2009, the Albanian National Strategy for Higher Education 2014-2020, and a study on the presence of Quality Assurance Institutions in Higher Education, based on the report from the Education, Audiovisual and Culture Exécutive Agency. The methodology chosen by the authors of this paper is to divide into four groups the countries that have established a national or private Quality Assurance Institution as part of their higher education system in order to assess whether the existence/presence of such institutions act as key instruments to ensuring the quality of higher education. It is recommended that Albania even though listed in the group of countries establishing a National Quality Assurance Agency, can ‘maybe’ follow the model of those European countries that have established a further Private Quality Assurance Agency in addition to the National Quality Assurance Agency. It is believed that the further establishment of a carefully chosen private quality assurance agency (ENQA or EQAR) would ensure quality and guarantee transparency in higher education.
    Źródło:
    Academicus International Scientific Journal; 2014, 09; 107-119
    2079-3715
    2309-1088
    Pojawia się w:
    Academicus International Scientific Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of Microplastic Detection Methods in Wastewater Treatment Plants
    Autorzy:
    Biyik, Yudum
    Baycan, Neval
    Powiązania:
    https://bibliotekanauki.pl/chapters/31234001.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    microplastics
    wastewater
    FT-IR
    quality assurance/quality control (QA/QC)
    polypropylene (PP)
    polyethylene (PE)
    Opis:
    A plastic can be turn to millions fragments of microplastic particles by anthropogenic activities and environmental events (such as wind, UV light, the water wave action). Due to their surface hydrophobicity, adsorb persistent organic pollutants, the potential to transport contaminants and persistent properties, microplastics have the potential to become widely dispersed in the water environment via hydrodynamic processes and water currents. Plastic materials are durable and rather than decomposing, they break down into small plastic particles over time. These small particles that are less than 5 mm usually defined as microplastic. As a consequence of large plastic production rates, plastic waste accumulation in natural environment rapidly increased all over the World. However, the effects of plastic wastes in different ecosystems are still largely unknown. Water and wastewater treatment plants are important facilities to estimate plastic waste release or retention amount to the environment. The field of microplastic pollution is in its infancy, and there are not yet widely accepted standards for sample collection, laboratory analyses, quality assurance/quality control (QA/QC) or reporting of microplastics in environmental samples. Up to date, few studies have quantified microplastics in wastewater. Moreover, the lack of a standardized and applicable method to identify microplastics in complex samples, such as wastewater, has limited the accurate assessment of microplastics and may lead to an incorrect estimation. In this study, microplastic sampling techniques, extraction methods and identification methods of microplastics in wastewater were compared. It was concluded that studies were mostly done with grap type sampling, wet peroxite oxidation and identification methods with microscope and Fourier Transform Infrared Spectrophotometer (FT-IR). In the FT-IR analysis to determine the polymer structure of microplastics, the most common type of polymer was found to be polypropylene (PP) and polyethylene (PE).
    Źródło:
    Innovations – Sustainability – Modernity – Openness. Modernity in engineering; 9-22
    9788366391901
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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