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    Wyświetlanie 1-5 z 5
    Tytuł:
    Effect of natural organic matter on adsorption of ionic and non-ionic pharmaceuticals to granular activated carbon
    Autorzy:
    Oh, H.
    Urase, T.
    Simazaki, D.
    Kim, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/208222.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    adsorpcja
    grupa karboksylowa
    kwas klofibrowy
    granulowany węgiel aktywny
    węgiel aktywny
    naturalne substancje organiczne
    farmaceutyki
    adsorption
    carboxylic group
    clofibric acid
    granular activated carbons
    natural organic matters
    pharmaceuticals
    Opis:
    Adsorption of clofibric acid (CA) and propyphenazone (PPZ) to virgin granular activated carbon (GAC) and preloaded GAC was evaluated in the absence or presence of natural organic matter (NOM). In spite of lower log K ow, PPZ showed higher selectivity to GAC than CA, which has a carboxylic group. Adsorption competition between CA and PPZ in binary solutes system decreased the amount of individual compound adsorbed to GAC. Adsorption isotherm data obtained in the presence of NOM showed that NOM in bulk solution or preloaded on GAC could significantly reduce the amounts of CA and PPZ adsorbed to GAC.
    Źródło:
    Environment Protection Engineering; 2013, 39, 4; 15-28
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of an odor source in Changwon City using multi-monitoring methods. A case study of Korea
    Autorzy:
    Prueksakorn, K.
    Kim, T.-H.
    Powiązania:
    https://bibliotekanauki.pl/articles/207109.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    odor
    industrial plants
    industrial city
    odor measurements
    odor nuisance
    odor pollutants
    odorimetry
    Changwon City
    zapach
    zakłady przemysłowe
    miasto przemysłowe
    pomiary zapachu
    uciążliwość zapachowa
    badanie zapachu
    emisja substancji zapachowych
    jakość zapachowa powietrza
    metody pomiarowe uciążliwości zapachowych
    ocena uciążliwości zapachu
    Changwon
    Opis:
    It is a regular occurrence for residents living near industrial plants to complain regarding odor problems. Those plants may also try to protect themselves from liability by demonstrating some environmental evidence. An investigation to prove whether the accused industrial complex is the major source of released odors among several potential sources of odor problems was carried out using the combination of measurement techniques. The multi-monitoring methods comprise utilizations of olfactory system, questionnaire, electronic detector and chemical analysis. This study demonstrated the achievement of integrating scientific monitoring methods to support the enforcement of odor acts for management in the industrial city.
    Źródło:
    Environment Protection Engineering; 2015, 41, 4; 109-130
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Error reduction of the Doppler lidar signal using a re-normalization method
    Autorzy:
    Park, N G
    Baik, S H
    Park, S K
    Kim, D L
    Kim, D. H.
    Powiązania:
    https://bibliotekanauki.pl/articles/173914.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    injection-seeded laser
    Doppler lidar
    frequency locking
    wind lidar
    Doppler velocity measurement
    Opis:
    In this paper, we present a re-normalization method for a Doppler signal of a Doppler lidar system. For the Doppler lidar system, we used an injection-seeded pulsed Nd:YAG laser as a transmitter and an iodine cell as a Doppler frequency discriminator. A frequency locking system that uses the absorption feature of iodine gas is too sensitive to the external or internal noises (iodine cell temperature instability, laser frequency fluctuation, environmental noises, etc.) to maintain its locking point ideally, and this frequency locking error makes the Doppler lidar system acquire the noises as the Doppler frequency shifts. To reduce the Doppler signal error induced by a frequency locking error, we used a re-normalization method by an addition of a laser beam path separated from a transmitter to the Doppler frequency discriminator for re-normalization. In this method, fluctuations of the Doppler signal were reduced using the reference signal. The reduced amount of standard deviation between the Doppler signal and the re-normalization signal was 4.838×10–3 and the Doppler signals showed a 53.3% fluctuation reduction of the averaged error value by this method.
    Źródło:
    Optica Applicata; 2014, 44, 1; 103-111
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Contamination of soil with heavy metals drained out from abandoned mines in the South-West region of Korea
    Autorzy:
    Kim, S.-D.
    Dho, H.-S.
    Lee, S.-J.
    Powiązania:
    https://bibliotekanauki.pl/articles/207493.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    soil pollution
    abandoned mines
    arsenic
    heavy metals
    nickel
    soils
    zinc
    contamination level
    forest regions
    surface soil
    zanieczyszczenie gleby
    zlikwidowane kopalnie
    arsen
    metale ciężkie
    nikiel
    gleby
    cynk
    poziom zanieczyszczeń
    obszary leśne
    powierzchniowe warstwy gleby
    Opis:
    Contamination of soil with heavy metals drained out from twenty eight abandoned mines in the southwest regions of Korea has been investigated. Utilizing various statistical techniques, the goal was to evaluate and analyze pH and the contamination with Arsenic, and the following six heavy metals: cadmium, hydrargyrum, lead, nickel, chromium, and zinc. Contamination levels of heavy metals were determined depending on the depth of the soil. Results indicated that the subsoil and the surface soil both were strongly contaminated with lead and arsenic. Furthermore, the subsoil also contained much nickel. In forest regions, high levels of lead and arsenic, whereas in all regions high levels of zinc have been detected.
    Źródło:
    Environment Protection Engineering; 2015, 41, 3; 61-72
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A mixed control chart adapted to the truncated life test based on the Weibull distribution
    Autorzy:
    Khan, N.
    Aslam, M.
    Kim, K.-J.
    Jun, C. -H.
    Powiązania:
    https://bibliotekanauki.pl/articles/406432.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    life test
    Weibull distribution
    attribute chart
    binomial distribution
    average run length
    Opis:
    The design of a new mixed attribute control chart adapted to a truncated life test has been pre-sented. It was assumed that the lifetime of a product follows the Weibull distribution and the number of failures was observed using a truncated life test, where the test duration was specified as a fraction of the mean lifespan. The proposed control chart consists of two pairs of control limits based on a binomial distribution and one lower bound. The average run length of the chart was determined for various levels of shift constants and specified parameters. The efficiency of the chart is compared with an existing control chart in terms of the average run length. The application of the proposed chart is discussed with the aid of a simulation study.
    Źródło:
    Operations Research and Decisions; 2017, 27, 1; 43-55
    2081-8858
    2391-6060
    Pojawia się w:
    Operations Research and Decisions
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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