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Wyszukujesz frazę "Dehghani, A." wg kryterium: Autor

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    Wyświetlanie 1-6 z 6
    Tytuł:
    The insecticidal and repellent activity of ginger (Zingiber officinale) and eucalyptus (Eucalyptus globulus) essential oils against Culex theileri Theobald, 1903 (Diptera: Culicidae)
    Autorzy:
    Madreseh-Ghahfarokhi, S.
    Pirali, Y.
    Dehghani-Samani, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/5882.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Źródło:
    Annals of Parasitology; 2018, 64, 4
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sonondegradation of organophosphorus pesticides in water
    Autorzy:
    Dehghani, M. H.
    Fadaei, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/208018.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    pesticides
    gas chromatography
    human organism
    sonolysis
    ultrasound irradiation
    diazinon
    malathion
    pestycydy
    chromatografia gazowa
    organizm ludzki
    sonoliza
    diazynon
    malation
    promieniowanie ultradźwiękowe
    Opis:
    Organophosphorus pesticides (OPPs), such as diazinon and malathion, are widely found in water resources. When absorbed by human organisms, OPP s are very toxic mainly because they deactivate acetyl cholinesterase. In the present study, the degradation of diazinon and malathion was investigated. The experiments were conducted for diazinon concentrations of 100, 300, 500 μg/dm3 and malathion concentrations of 200,400,600 μg/ dm3. Sonochemical examination was done using an ultrasonic reactor at 130 kHz and 500 NW for five times, and then the amount of the pesticide in a sample was measured by the gas chromatography with a flame ionization detector (GC-FID).The highest degradation of malathion and diazinon by the sonolysis process occurred at pH 9 and 3, respectively. The study demonstrates that malathion and diazinon could be effectively degraded by ultrasonic irradiation.
    Źródło:
    Environment Protection Engineering; 2013, 39, 4; 5-14
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Removal of hexavalent chromium from aqueous solution by adsorption on γ-alumina nanoparticles
    Autorzy:
    Golestanifar, H.
    Haibati, B.
    Amini, H.
    Dehghani, M. H.
    Asadi, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/207945.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    adsorption
    alumina
    aluminum
    chemicals removal
    water treatment
    chromium
    chromium compounds
    nanoparticles
    sorption
    alumina nanoparticles
    hexavalent chromium
    adsorpcja
    aluminium
    usuwanie chemikaliów
    uzdatnianie wody
    chrom
    związki chromu
    nanocząstki
    sorpcja
    nanocząstki tlenku glinu
    chrom sześciowartościowy
    Opis:
    The use of γ-alumina (γ-Al2O3) nanoparticles as adsorbent to remove Cr(VI) from aqueous solution was investigated using batch experiments. Adsorption experiments were carried out for various initial doses of Al2O3, initial concentrations of chromium(VI), contact times and pH. The structure and morphology of the sorbent was characterized by XRD, SEM, and TEM techniques. Results demonstrated that the removal efficiency of chromium(VI) was increased by increasing the contact time, initial concentration, and pH. The results of the study showed that adsorption of chromium by γ-alumina nanoparticles reached equilibrium after 60 min and after that a little change of chromium removal efficiency was observed. Furthermore, kinetics of chromium sorption was well fitted by pseudo-second order kinetic model, and well explained by the Freundlich isotherm (R2 > 0.992). Overall, alumina nanoparticles recognized as an effective sorbent to remove chromium(VI) from aqueous solutions.
    Źródło:
    Environment Protection Engineering; 2015, 41, 2; 133-145
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Removal of fine gangue minerals from Chador-malu iron concentrate using hydroseparator
    Autorzy:
    Tohry, A.
    Dehghani, A.
    Hosseini-Nasab, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/109329.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    Chador-malu plant
    iron concentrates
    silica
    phosphorus
    hydroseparator
    Opis:
    Phosphorus and silica are the main impurities of the Chador-malu iron ore which need to be reduced to the required values of 0.1 and 2%, respectively. The impurities in the final iron concentrate are mainly due to the presence of fine particles (less than 25 μm) of silica and apatite in the concentrates of magnetic separators and flotation circuits. In this study, the removal of very fine gangue minerals from iron concentrate of the Chador-malu processing plant was investigated using a laboratory hydroseparator. The laboratory-scale hydroseparator experiments were conducted under various operational conditions. The results showed that the silica and phosphorus contents of the flotation feed samples (less than 45 μm) decreased from 4.13% and 0.58% to 2.90 and 0.45%, respectively, while the iron grade increased from 59.5% to 63.5% by setting the effective parameters of the separator. The follow up flotation tests on the hydroseparator product resulted in an iron concentrate with silica and phosphorus contents of less than 2% and 0.04%, respectively. Moreover, its phosphorus content was reduced from 0.66% to 0.1% by desliming the final magnetic concentrate with hydroseparator. In this case, around 76% of phosphorus was removed.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2017, 53, 1; 250-263
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    In-vitro antigiardial activity and GC-MS analysis of Eucalyptus globulus and Zingiber officinalis essential oils against Giardia lamblia cysts in simulated condition to human’s body
    Autorzy:
    Dehghani-Samani, A.
    Madreseh-Ghahfarokhi, S.
    Pirali, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/5930.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Źródło:
    Annals of Parasitology; 2019, 65, 2
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A data driven decision making approach for long-wall mining production enhancement
    Autorzy:
    Morshedlou, A.
    Dehghani, H.
    Hoseinie, S. H.
    Powiązania:
    https://bibliotekanauki.pl/articles/88911.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
    Tematy:
    longwall system
    reliability
    maintenance
    production risk
    Opis:
    Machine failures have destructive effects on continuity of operation and lead to production losses in long-wall mines, making proper maintenance scheduling essential. This paper models the reliability of the whole production chain in an Iranian long-wall mine including the drum shearer, Armored Face Conveyor (AFC), hydraulic powered supports, Beam Stage Loader (BSL), and main conveyer belt. Analyzing the computational results and failure frequencies, we rank the critical components and develop a reliability-based preventive maintenance schedule for all equipment. In respect to the data classification, conveyor belt with failure abundance of 41.5 percent is the most critical, while powered supports with the failure abundance of 1.2 percent shows the best performance. Approximately, the reliability of the production process after four hours reaches nearly to zero. Implementing the schedule, computational results suggest an increase of approximately 67.7 percent in the average production per shift.
    Źródło:
    Mining Science; 2019, 26; 7-20
    2300-9586
    2353-5423
    Pojawia się w:
    Mining Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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