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

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Seismic evaluation of mixed steel and RC columns in hybrid high-rise buildings
    Autorzy:
    Kontoni, D. P. N.
    Farghaly, A. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/230311.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    budynek wysoki
    konstrukcja hybrydowa
    budynek żelbetowo-stalowy
    belka żelbetowa
    płyta żelbetowa
    kolumna żelbetowa
    kolumna stalowa
    odpowiedź sejsmiczna
    konstrukcja odporna na trzęsienia ziemi
    odporność na wstrząsy sejsmiczne
    high-rise building
    hybrid structure
    reinforced concrete steel building
    reinforced concrete beam
    reinforced concrete slab
    reinforced concrete column
    steel column
    seismic response
    earthquake-resistant structure
    Opis:
    The growth in high-rise building construction has increased the need for hybrid reinforced concrete and steel structural systems. Columns in buildings are the most important elements because of their seismic resistance. Reinforced concrete (RC) columns and steel columns were used herein to form hybrid structural systems combining their distinct advantages. Eleven 3D building models subjected to earthquake excitation with reinforced concrete beams and slabs of 12 floors in height and with different distributions of mixed columns were analyzed by the SAP2000 software in order to investigate the most suitable distributions of a combination of reinforced concrete and steel columns. Top displacements and accelerations, base normal forces, base shear forces, and base bending moments were computed to evaluate the selected hybrid structural systems. The findings are helpful in evaluating the efficiency of the examined hybrid high-rise buildings in resisting earthquakes.
    Źródło:
    Archives of Civil Engineering; 2019, 65, 2; 3-17
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stiffness effects of structural elements on the seismic response of RC high-rise buildings
    Wpływ sztywności elementów konstrukcyjnych na reakcję sejsmiczną wieżowców z żelbetu
    Autorzy:
    Kontoni, D. P. N.
    Farghaly, A. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/231212.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    element konstrukcyjny
    żelbet
    sztywność
    reakcja sejsmiczna
    budynek wysoki
    structural element
    reinforced concrete
    stiffness
    seismic response
    high-rise building
    Opis:
    The stiffness of structural elements (columns, beams, and slabs) significantly contributes to the overall stiffness of reinforced concrete (RC) high-rise buildings (H.R.B.s) subjected to earthquake. In order to investigate what percentage each type of element contributes to the overall performance of an H.R.B. under seismic load, the stiffness of each type of element is reduced by 10% to 90%. A time history analysis by SAP2000 was performed on thirteen 3D models of 12-story RC buildings in order to illustrate the contribution of column stiffness and column cross sections (rectangular or square), building floor plans (square or rectangular), beam stiffness and slab stiffness, on building resistance to an earthquake. The stiffness of the columns contributed more than the beams and slabs to the earthquake resistance of H.R.B.s. Rectangular cross-section columns must be properly oriented in order for H.R.B.s and slender buildings to attain the maximum resistance against earthquakes.
    Aby zbadać, jaki procent każdego rodzaju elementów (słupów, belek i płyt) wpływa na ogólną sztywność i wydajność wieżowców (H.R.B.) pod obciążeniem sejsmicznym, sztywność każdego elementu jest zmniejszana o 10% do 90%. Analiza historyczna przeprowadzona przez SAP2000 obejmowała trzynaście modeli 3D 12-piętrowych wieżowców w celu zobrazowania wpływu sztywności i przekrojów słupa (prostokątnego lub kwadratowego), planu pięter budynku (kwadratowego lub prostokątnego), sztywności belki oraz sztywności płyty, na odporność budynku na trzęsienie ziemi. Sztywność słupa miała większy wpływ niż sztywność belki i płyty na odporność wieżowca na trzęsienie ziemi.
    Źródło:
    Archives of Civil Engineering; 2018, 64, 1; 3-20
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    From waste to treat waste : exploitation of marble dust as a harmful pollutant to a green adsorbent for dyes and heavy metals from industrial wastewater
    Autorzy:
    Attia, H.A.
    Farghaly, Mohamed G.
    Saleh, A.M.
    Abdel Khalek, M.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2175448.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    marble dust
    pollutant
    adsorbent
    dye
    heavy metals
    textile wastewater
    Opis:
    The marble dust as a harmful industrial waste of marble fabrication was evaluated as aneconomical and efficient green adsorbent for Acid Red-1 dye and lead ions. The XRD, XRF, particle size, surface area and zeta-potential measurements were used to characterize the marble dust. The removal efficiency was optimized by studying several parameters such as pH, temperature, contact time, adsorbent dose and initial concentration. The optimum removal was achieved at pH 6, 20°C after 60 min in the presence of 2.5g/L marble dust. The rates of adsorption were found to follow the pseudo-second-order model. The results showed better fitting to Freundlich isotherm. The thermodynamic studies revealed that the adsorption process is spontaneous, exothermic and favorable at low temperature. The free energy (∆G°), enthalpy (∆H°), and entropy (∆S°) changes were calculated to predict the nature of adsorption.The removal efficiency was improved by calcination of the marble at 700°C. Application for textilewastewater showed high removal efficiency up to 99.9%of inorganic and organic pollutants. The product of treatment was used in the concrete and bricks manufactured, so there is nogeneration of second-order pollutants.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2022, 58, 6; art. no. 154007
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A combined hydrocyclone - electrocoagulation treatment for different types of industrial wastewater
    Autorzy:
    Farghaly, Mohamed G.
    Attia, H.
    Saleh, H. A.
    Ramadan, A. M.
    Abdel Khalek, M.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1448028.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    hydrocyclone
    electrocoagulation
    paper industry
    iron industry
    marble industry
    granite industry
    Opis:
    Every year, a large amount of mineral processing wastewater is discharged from various industries into the environment which is considered a challenging task not only because of its large volume, but more importantly, its hazardous components, while its reuse as feedwater without proper treatments causes great harm to the final product of these industries. Cost-effective methods are required to treat a wide range of industrial wastewater in a diverse range of conditions. In this study, a combined hydrocyclone-electrocoagulation system is tried to treat the wastewater for industries with high water consumption and high pollutants such as paper industry, iron and metal forming industry, and marble industry. The effects of the hydrocyclone operational parameters, such as feed inlet pressure and diameter, vortex finder diameter, apex diameter, and feed solids content, were investigated. In the case, wastewater of paper industry, the following optimum conditions $(P = 4.5$ bar, $D_o = 15.8 mm, D_u = 6 mm, D_i = 4 mm and c_s = 2.3%)$ were achieved. An overflow of about 90.58% water recovery and 21.45% solid at 75.92% separation efficiency was obtained. The results showed that the hydrocycloneelectrocoagulation treatment has efficiently treated the three different types of industrial wastewater. The chemical oxygen demand (COD), biochemical oxygen demand (BOD), total solid (TS), total suspended solids (TSS), colour and turbidity, were reduced sharply and met the effluent discharge or reuse standards. Also, compared with the hydrocyclone-treated wastewater, the hydrocyloneelectrocoagulation-treated wastewater was found to be more enhanced.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2021, 57, 2; 143-155
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Exploitation of industrial solid wastes for preparing zeolite as a value-added product and its kinetics as adsorbent for heavy metal ions
    Autorzy:
    Abdel-Hameed, Reham Mohamed
    Abdel-Aal, Elsayed A.
    Farghaly, Fatma E.
    Ibrahim, Ibrahim A.
    Abdel Khalek, Mohamed A.
    Ahmed, Mohamed A.
    Abdel-Messih, Micheal F.
    Powiązania:
    https://bibliotekanauki.pl/articles/1448799.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    zeolite P
    aluminium wastes
    hydrothermal process
    metal ion removal
    aluminum waste
    Opis:
    Aluminum and fumed silica as solid industrial wastes were converted to zeolite NaPas a value-addedproduct without any template. The hydrothermal process was optimized using static autoclave. The crystallization was carried out at 100, 120 and 150°C for 24, 48 and 72 h. The prepared zeolite of Si:Al ratio of 1.2 was characterized using X-ray Diffraction (XRD), Scanning Electron Microscope (SEM) provided with Energy Dispersive Spectroscopy (EDS), Surface Area, Fourier Transmitted Infra-Red (FTIR) and Thermal Analysis (TG-DSC). The crystalline phase was formed at 100°Cafter 72 hours and at 120°C after 48 hours, while it was formed after 24 honlyat 150°C. Increasing temperature and time lead to the conversion of the prismatic gibbsite crystals into plate-like structure of zeolitewhich is then formedcauliflower-like structure.The prepared zeolite was employed as adsorbent for $Ni^{2+}$ and $Cu2+ions from aqueous solution.The kinetic studies of adsorption processes were performed.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2021, 57, 1; 87-99
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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