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Wyszukujesz frazę "Azizi, M." wg kryterium: Autor

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    Wyświetlanie 1-7 z 7
    Tytuł:
    Analysis of a Square Parasitic Antenna by Using Lumped Elements
    Autorzy:
    Ferchichi, A.
    Azizi, M. K.
    Ali, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/227118.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    RFID TAG
    parasitic antenna
    Lumped element
    Opis:
    In this paper, a novel approach to design a parasitic antenna for an RFID application. This approach is based on using a parasite square patch near to a square patch. The square antenna is simulated by using HFSS and ADS and the proposed parasitic antenna is developed by using Lumped elements. This antenna can be integrated in an RFID TAG by using the electrical model of both antenna and IC. The size of antenna is 31mm*31mm*8.5mm.
    Źródło:
    International Journal of Electronics and Telecommunications; 2012, 58, 3; 279-283
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of sensitivity analysis for assessment of energy and environmental alternatives in the manufacture by using analytic hierarchy process
    Autorzy:
    Ghorbannezhad, P.
    Azizi, M.
    Ray, C.
    Yoo, C.
    Ramazani, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/207981.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    hierarchical systems
    analytic hierarchy process (AHP)
    AHP
    energy utilization
    environmental impact
    paper mill
    recycling
    water supply
    system hierarchiczny
    proces hierarchii analitycznej
    wykorzystanie energii
    wpływ na środowisko
    młyn papierniczy
    recykling
    wodociągi
    Opis:
    Multi-criteria decision making (MCDM) was used to make comparative analysis of projects or heterogeneous measures for prioritization criteria and subcriteria simultaneously in a complex situation. The aim of this paper is to determine the alternatives and the sensitivity of main factors affecting water and energy consumption as well as environmental impact in a recycled paper manufacturing by using analytic hierarchy process (AHP). The AHP enables one to consider all the elements of decision process in a model, and to compare criteria and subcriteria of the model to find the best alternative. The AHP technique is applied through specific software package with user-friendly interfaces called Expert Choice. The results indicated that reduction of water consumption is the most important alternative for sustainable development in a recycled paper mill in Iran. Also, good housekeeping is the most sensitive criterion affecting the alternatives. The paper illustrates how the AHP method can help industrial management to overcome the energy usage and environmental impact in the manufacture.
    Źródło:
    Environment Protection Engineering; 2013, 39, 3; 5-20
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The impact of knowledge management practices on supply chain quality management and competitive advantages
    Autorzy:
    Azizi, R.
    Maleki, M.
    Moradi-Moghadam, M.
    Cruz-Machado, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/406697.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    knowledge management
    practices
    supply chain
    quality management
    structural equation modeling
    Opis:
    Achieving competitive advantage enables an organization to create a defensible position against its competitors. It also allows organizations to differentiate themselves from competitors. This study aims to investigate impact of knowledge management practices on supply chain quality management and competitive advantage in Alyaf Company, Iran. This research is functional in purpose and data gathering and data analysis is descriptive-correlation. The statistical population is consists of 25 company executives and experts in the supply chain of Alyaf Company; opinions of 68 of its members were used as a selective sample identified by simple random sampling method. Primary data was collected through questionnaire and structural equation modeling was used to assess relationships between variables. The results of structural equation modeling show a positive and significant causal relationship between knowledge management practices and supply chain quality management. Direct relationship between knowledge management and competitive advantage was not confirmed but the relationship between these two variables was confirmed indirectly.
    Źródło:
    Management and Production Engineering Review; 2016, 7, 1; 4-12
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Vibration-based cavitation detection in centrifugal pumps
    Autorzy:
    Hajnayeb, A.
    Azizi, R.
    Ghanbarzadeh, A.
    Changizian, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/329512.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    cavitation severity
    centrifugal pump
    vibration analysis
    EEMD
    EMD
    DWT
    kawitacja
    pompa odśrodkowa
    analiza drgań
    Opis:
    Cavitation is a common cause of failure in centrifugal pumps. Because of interaction of several mechanical parts and fluid, the vibration signal of a centrifugal pump is complicated. In this paper, the vibrations of a transparent-casing centrifugal pump are studied. Three states are studied experimentally: no cavitation, limited cavitation and developed cavitation. Each case was also confirmed by visually inspecting the cavitation bubbles. The vibrations of the pump was acquired by using an accelerometer that was attached to the casing. Discrete wavelet transform (DWT) analysis and empirical mode decomposition (EMD) are used to extract classification features from the acquired signals. Using these features, an artificial neural network (ANN) successfully diagnosed the cavitation condition of the pump. Finally, EEMD is also implemented. The results showed the success of EMD and DWT in cavitation diagnosis. The output of EEMD does not show significant change comparing to EMD.
    Źródło:
    Diagnostyka; 2017, 18, 3; 77-83
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bio-polishing sludge adsorbents for dye removal
    Autorzy:
    Zaini, M. A. A.
    Norulaina, A.
    Mohd Azizi, C. Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/779794.pdf
    Data publikacji:
    2016
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    adsorption
    adsorbent
    bio-polishing sludge
    methylene blue
    chemical treatment
    Opis:
    The objective of this work is to evaluate the removal of methylene blue dye by bio-polishing sludge-based adsorbents. The adsorbents were characterized according to the specific surface area, pH upon the treatment and surface functional groups. The adsorption of dye was carried out at room temperature, and the adsorption data were analyzed using the isotherm and kinetics models. The bio-polishing sludge is rich in ash content, and the presence of surface functional groups varied with the treatment strategies. The specific surface area of adsorbents is between 7.25 and 20.8 m2 /g. Results show that the maximum removal of methylene blue by sludge adsorbents was observed to have the following order: untreated sludge (SR) > zinc chloride-treated (SZ) > microwave-dried (SW) = potassium carbonate-treated (SK) > acid-washed (SH). The maximum adsorption capacities for SR and SZ as predicted by the Langmuir model are 170 and 135 mg/g, respectively. Although SR demonstrates a higher maximum removal than SZ, the latter exhibits greater removal intensity and rate constant even at high dye concentration. The bio-polishing sludge is a promising adsorbent for dye wastewater treatment.
    Źródło:
    Polish Journal of Chemical Technology; 2016, 18, 4; 15-21
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Covalent immobilization of laccase on Fe3O4-graphene oxide nanocomposite for biodegradation of phenolic compounds
    Autorzy:
    Rouhani, Shamila
    Azizi, Shohreh
    Maaza, Malik
    Mamba, Bhekie
    Msagati, Titus A. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2032944.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    phenol
    adsorption
    biodegradation
    Fe3O4
    Trametes versicolor
    laccase
    fenol
    adsorbcja
    biodegradacja
    lakaza
    Opis:
    Laccase from Trametes Versicolor (E.C. 1.10.3.2) was immobilized on the Fe3O4–graphene hybrid nanocomposite through the covalent attachment method (Lac/Fe3O4/GO). The effect of immobilization conditions on the activity and recovered activities such as contact time, the concentration of glutaraldehyde and enzyme was evaluated. The recovered activity of the immobilized laccase on the Fe3O4–graphene oxide nanocomposite was ca. 86%. Immobilized laccase unlike free laccase retained the activity and exhibited higher resistance to temperature and pH changes and also improved storage and thermal stability. Approximately 70% of relative activity for immobilized laccase was remained after being incubated for 2 h at 55 °C, but free laccase only remained 48%. Immobilized laccase retained 88% of initial activity after storage for 20 days, however, the free laccase only 32%. Finally, Lac/Fe3O4/GO capability was evaluated by the oxidation of phenol, p-chlorophenol, and 2,4-dichlorophenol. Lac/Fe3O4/GO was characterized by SEM, EDX, FT-IR, and AGFM.
    Źródło:
    Environment Protection Engineering; 2021, 47, 1; 85-99
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of advanced oxidation process (H2O2/UV) for removal of organic materials from pharmaceutical industry effluent
    Autorzy:
    Azizi, E.
    Fazlzadeh, M.
    Ghayebzadeh, M.
    Hemati, L.
    Beikmohammadi, M.
    Ghaffari, H. R.
    Zakeri, H. R.
    Sharafi, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/207937.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    oksydacja
    ścieki farmaceutyczne
    substancje organiczne
    odpady farmaceutyczne
    ChzT
    bioreaktor
    amoxicillin
    UV/H2O2
    COD
    przemysł farmaceutyczny
    waste water
    membrane bioreactor
    UV/H2O2 process
    reactor
    mineralization
    pharmaceutical industry effluent
    Opis:
    Pharmaceutical wastewater is one of the major complex and toxic industrial effluents containing little or no biodegradable organic matters. In this study, H2O2/UV based advanced oxidation process (AOP) was used to remove organic materials from pharmaceutical industry effluent. For the chemical oxygen demand (COD) removal radiation of medium pressure mercury vapor UV lamp was used in the presence of hydrogen peroxide (H2O2/UV). Results indicated that the efficiency of COD removal depends on the initial concentration H2O2, oxidation time and pH. The efficiency of COD removal at low H2O2con-centration was very low even coupled with UV light, which can be attributed to the low generation of hydroxyl radicals (OH). At high concentration of H2O2 (500 mg/dm3) and optimum pH (pH = 4), 87.6% removal efficiency could be achieved during 70 min oxidation. For high concentration of H2O2 (500 mg/dm3) at pH 3 and 7, the maximum COD removal efficiency was 28.5% and 15.2% respectively, indicating significant roles of pH and H2O2concentration in the process of COD removal.
    Źródło:
    Environment Protection Engineering; 2017, 43, 1; 183-191
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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