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    Wyświetlanie 1-12 z 12
    Tytuł:
    Some Physical Properties of Copper Oxide Thin Films Prepared by Electrolysis Method
    Autorzy:
    Oudah, Mustafa H.
    Mazin, H. Hasan
    Abd, Ahmed N.
    Powiązania:
    https://bibliotekanauki.pl/articles/1065248.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    copper oxide
    drop-casting method
    electrolysis
    quantum size effect
    thin films
    Opis:
    The aim of this paper is to study the properties of copper oxide thin films prepared by electrolysis method and deposited on glass substrates by drop-casting method at different annealing temperatures. Copper oxide colloidal was successfully prepared by electrolysis method. The X-ray diffraction confirms the polycrystalline structure of the films. Atomic force microscopy shows that the increase in the annealing temperature improves the surface morphology, increases the grain size and removes the cracks. The best optical transmittance was for the film annealed at 200 ºC. The bandgap decreases from 3.35 eV to 3.15 eV as a result of increasing the annealing temperature. The wide bandgap that obtained in this study is due to quantum size effect.
    Źródło:
    World Scientific News; 2019, 135; 59-70
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Induction of periodontal disease via retentive ligature, lipopolysaccharide injection, and their combination in a rat model
    Autorzy:
    Mustafa, H.
    Cheng, C.H.
    Radzi, R.
    Fong, L.S.
    Mustapha, N.M.
    Dyary, H.O.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087105.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    alveolar bone
    periodontal disease
    Porphyromonas gingivalis lipopolysaccharide
    retentive ligature
    Źródło:
    Polish Journal of Veterinary Sciences; 2021, 24, 3; 365-373
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of annealing temperature on the structural and optical properties of CdSe: 1% Ag thin films
    Autorzy:
    Shehab, Alia A. A.
    Mustafa, Mohammad H.
    Majeed, Samir G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1192119.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    annealing
    XRD
    Optical
    CdSe: 1% Ag
    thin films
    Opis:
    CdSe: 1% Ag thin films prepared by thermal evaporation method on glass substrates under vacuum technique with rate of deposition equal to 50 nm/min, the deposited films thickness (1µm) on glass substrates have been annealed at different temperatures for one hour. XRD measurement shows that the films have polycrystalline structure at R.T and change to single crystalline when annealed these films for different annealing temperatures (423, 473, 523 K). The optical measurement indicated that CdSe: 1% Ag films have direct optical energy gap, and it decreases with increasing annealing temperatures. The optical constant refractive index, extinction coefficient and dielectric constants were also studied.
    Źródło:
    World Scientific News; 2016, 45, 2; 185-195
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Radar Cross-section Reduction of Planar Absorbers Using Resistive FSS Unit Cells
    Autorzy:
    Jasim, Mustafa B.
    Sayidmarie, Khalil H.
    Powiązania:
    https://bibliotekanauki.pl/articles/27312944.pdf
    Data publikacji:
    2023
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    carbon paste
    double rings
    FSS
    radar cross-sectionreduction
    rasorber
    unit cell
    Opis:
    This paper demonstrates the feasibility of reducingradar cross-section by employing resistive sheets or rings inthe conducting elements of an FSS unit cell. The idea behindthe approach in question is to create power-absorbing elementswhich may help reduce the power reflected from FSS surface.The investigated FSS unit cells have the form of double-closedrings and double-closed-split rings. A carbon paste, serving asthe resistive layer, was inserted in various regions within the unitcell. The CST Microwave Studio software was used to obtain thereflection coefficient. Specific dimensions and conductivity of thepaste were selected to ensure better performance. Simulationresults showed that the reflection coefficient may be reducedby8dB, to14dB, by using carbon paste with the conventionalcopper layer.
    Źródło:
    Journal of Telecommunications and Information Technology; 2023, 4; 61--67
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hydrological responses to large-scale changes in land cover of river watershed: Review
    Autorzy:
    Muhammed, Hadi H.
    Mustafa, Andam M.
    Kolerski, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/1841965.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    high flow
    land use-land cover
    large scale change
    low flow
    runoff
    Opis:
    Despite many studies on the hydrological responses to forest cover changes in micro and mesoscale watersheds, the hydrological responses to forest cover alterations and associated mechanisms through the large spatial scale of the river watershed have not been comprehensively perceived. This paper thus reviews a wide range of available scientific evidence concerning the impacts exerted by the forest removal on precipitation, water yield, stream flow, and flow regimes. It is concluded that there is no statistical correlation between forest cover and precipitation and water yield at the micro and mesoscale. In contrast, there is a relative correlation coefficient (r = 0.77, p < 0.05) between forest cover and water yield at large scales (>1000 km2). These findings help our understanding of the hydrological response to forest disturbance at large and regional scale and provide a scientific perception to future watershed management in the context of human activities and natural hazards.
    Źródło:
    Journal of Water and Land Development; 2021, 50; 108-121
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The mediating role of organizational commitment in the relationship between internal marketing and job performance: Application in Turkiye
    Autorzy:
    Paksoy, H. Mustafa
    Durmaz, Yakup
    Özbezek, Dilek
    Çopuroğlu, Filiz
    Powiązania:
    https://bibliotekanauki.pl/articles/31339788.pdf
    Data publikacji:
    2024
    Wydawca:
    Uniwersytet Ekonomiczny w Katowicach
    Tematy:
    internal marketing
    organizational commitment
    job performance
    Opis:
    Aim/purpose – The study aims to investigate the role of organizational commitment as a mediator between internal marketing and job performance. Design/methodology/approach – For this purpose, data were collected from 239 personnel working in the textile sector in Turkiye’s Organized Industrial Zone. The data obtained from the participants through the survey method were examined by explanatory factor analysis, descriptive statistics, correlation, and bootstrap regression analyses. Findings – The findings of the research clearly show that internal marketing practices have a significant impact on job performance. Internal marketing variable explained 52.24% of the change in organizational commitment. However, it has been revealed that organizational commitment has a partial mediating role in the relationship between internal marketing practices and job performance. Research implications/limitations – This study has limitations in taking samples from Turkiye, focusing on the textile industry, and using the convenience sampling method. Originality/value/contribution – These results strongly support the argument that internal marketing practices further increase job performance through organizational commitment.
    Źródło:
    Journal of Economics and Management; 2024, 46; 111-142
    1732-1948
    Pojawia się w:
    Journal of Economics and Management
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of Titanium Nitride Thickness as a Support Layer for Carbon Nanotubes Growth
    Autorzy:
    Ramli, Muhammad M.
    Osman, Nurul H.
    Darminto, D.
    Abdullah, Mohd Mustafa Al Bakri
    Powiązania:
    https://bibliotekanauki.pl/articles/2125537.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    titanium nitride
    support layer
    carbon nanotubes
    interconnection
    Opis:
    The effect of titanium nitride (TiN) thickness as the support layer for carbon nanotubes (CNTs) growth was investigated by depositing three different thicknesses: 20 nm, 50 nm and 100 nm. This TiN support layer was deposited on SiO2 pads before depositing nickel (Ni) as the catalyst material. The Ni distribution on different TiN thicknesses was studied under hydrogen environment at 600°C. Then, the samples were further annealed at 600°C in acetylene and hydrogen environment for CNTs growth. The results show that, the optimum TiN thickness was obtained for 50 nm attributed by the lowest D to G ratio (0.8).
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 3; 963--966
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bacterial biofilm and its relation to cervical adenopathy, tonsillar hypertrophy and adenoid hypertrophy in chronic tonsillitis
    Autorzy:
    Eid, Mustafa I
    Elabd, Safia H
    Erfan, Dina M
    Ziada, Kholood W
    Ezzat, Abdelrahman E. M
    Powiązania:
    https://bibliotekanauki.pl/articles/1401686.pdf
    Data publikacji:
    2016
    Wydawca:
    Index Copernicus International
    Tematy:
    bacterial biofilm
    chronic tonsillitis
    antibiotic resistance
    Opis:
    Background: Bacterial biofilms have been linked to recurrent adenotonsillar diseases, with special concern regarding therapeutic management hindered by antibiotic resistance. Aims: we aimed to find if there was a relationship between the presence of a bacterial biofilm and the development of cervical lymphadenopthy, tonsillar hypertrophy and adenoid hypertrophy in patients with chronic tonsillitis. Patients and Methods: Tissue samples from tonsillar biopsies of 30 children who underwent tonsillectomy were examined by scanning electron microscopy (SEM). Settings and Design: This cross-sectional study was conducted between August 2012 and July 2015 in Al-Azhar University Hospitals. Results: It was found that 23.3% of children had a fully formed bacterial biofilm (Grade III), 6.7% had grade I and 6.7% had grade II biofilms as demonstrated by SEM. Staphylococcus aureus was the most common identified isolate (26%) followed by Coagulase-negative Staphylococci (17.4%) and Klebsiella pneumoniae (10.4%). No statistically significant difference regarding the presence of a bacterial biofilm and the development of cervical lymphadenopthy, tonsillar hypertrophy or adenoid hypertrophy was found. Conclusion: Bacterial biofilm is a possible cause of the chronicity of tonsillar diseases in children. There is no relationship between the presence of a bacterial biofilm and the development of of cervical lymphadenopthy, tonsillar hypertrophy or adenoid hypertrophy.
    Źródło:
    Polski Przegląd Otorynolaryngologiczny; 2016, 5, 3; 28-32
    2084-5308
    2300-7338
    Pojawia się w:
    Polski Przegląd Otorynolaryngologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biofim bakteryjny i jego związek z adenopatią szyjną, przerostem migdałków podniebiennych i/lub przerostem migdałka gardłowego w przewlekłym zapaleniu migdałków podniebiennych
    Autorzy:
    Eid, Mustafa I
    Elabd, Safia H
    Erfan, Dina M
    Ziada, Kholood W
    Ezzat, Abdelrahman E. M
    Powiązania:
    https://bibliotekanauki.pl/articles/1401741.pdf
    Data publikacji:
    2016
    Wydawca:
    Index Copernicus International
    Tematy:
    biofilm bakteryjny
    przewlekłe zapalenie migdałków podniebiennych
    oporność na antybiotyki
    Opis:
    Wstęp: Wykazano związek biofilmu bakteryjnego z nawracającymi chorobami migdałków podniebiennych oraz migdałka gardłowego, wykazującymi oporność na antybiotyki oraz związanymi z szczególnymi trudnościami w zakresie postępowania terapeutycznego. Cele: Starano się wykazać związek pomiędzy obecnością biofilmu bakteryjnego a występowaniem limfadenopatii szyjnej, przerostem migdałków podniebiennych oraz przerostem migdałka gardłowego w przypadkach przewlekłego zapalenia migdałków podniebiennych. Materiał i metody: Materiał tkankowy z badania biopsyjnego migdałków podniebiennych, pochodzący od 30 dzieci poddanych tonsillektomii, badany skaningowym mikroskopem elektronowym (SEM, ang. scanning electron microscope). Projekt badania: Badanie przekrojowe zostało przeprowadzone od sierpnia 2012 do lipca 2015 roku w Szpitalu Uniwersyteckim Al-Azhar (Al-Azhar University Hospitals). Wyniki: Stwierdzono, że u 23,3% dzieci występował w pełni wykształcony biofilm bakteryjny (III stopień), u 6,7% występował biofilm I stopnia, u 6,7% – II stopnia, co wykazano w badaniu SEM. Najczęściej izolowanym szczepem był Staphylococcus aureus (26%), następnie gronkowce koagulazo-ujemne (17,4%) i Klebsiella pneumoniae (10,4%). Nie wykazano statystycznie istotnej różnicy w odniesieniu do obecności biofilmu bakteryjnego w zależności od występowania lub braku limfadenopatii szyjnej, przerostu migdałków podniebiennych lub przerostu migdałka gardłowego. Wnioski: Biofilm bakteryjny jest możliwą przyczyną przewlekłości choroby migdałków u dzieci. Nie wykazano związku pomiędzy jego obecnością a występowaniem limfadenopatii szyjnej, przerostem migdałków podniebiennych lub przerostem migdałka gardłowego.
    Źródło:
    Polski Przegląd Otorynolaryngologiczny; 2016, 5, 3; 28-32
    2084-5308
    2300-7338
    Pojawia się w:
    Polski Przegląd Otorynolaryngologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Introducing key advantages of intensified flotation cells over conventionally used mechanical and column cells
    Autorzy:
    Hassanzadeh, Ahmad
    Safari, Mehdi
    Khoshdast, Hamid
    Güner, Mustafa K.
    Hoang, Duong H.
    Sambrook, Tim
    Kowalczuk, Przemyslaw B.
    Powiązania:
    https://bibliotekanauki.pl/articles/2146874.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    pneumatic flotation cells
    energy input
    mean particle retention time
    fine particles
    bubble size distribution
    Opis:
    The present paper introduces the key advantages of ImhoflotTM, JamesonTM, and RefluxTM flotation cells over the conventionally used mechanical and column cells from different perspectives. The impact of slurry mean retention time, bubble size distribution, and energy input was studied for all cell types. The mean retention time of laboratory scale ImhoflotTM (V030-cell) and RefluxTM flotation cells (RFC100) were measured experimentally using KCl as a tracer. Also, initially a statistical and practical overview of previously installed ImhoflotTM, and JamesonTM cells was presented in this work. It was found that more industrial data is available for the JamesonTM cell. The diagnostic results showed that RefluxTM, JamesonTM, and ImhoflotTM functionally operate similarly based on providing intensive turbulence in the downcomer. They were initially applied to the Australian and the UK coal industries and installed in the cleaning stage of flotation circuits, while there are now more applications in a wide variety of minerals across the world in different flotation stages. First pilot trials on a Russian gold ore were reported operating both JamesonTM and ImhoflotTM cells at the rougher-scalper and cleaner stages providing superior results using the ImhoflotTM cell as rougher-scalper and the JamesonTM at the cleaner. Formation of sub-micron and micron-sized bubbles, effective hydrodynamic characteristics, and low capital and operating costs were reported as major advantages of intensified flotation cells over the conventionally used ones in improving the recoverability of ultra-fine particles. Literature data showed that these cells provide greater gas-hold-up values (40-60%) over the mechanical (5-20%) and column cells (5-25%) with substantially lower power inputs. It was indicated that low mean slurry retention time could lead to a potential enhancement in their throughputs, but further industrial measurements are required to prove this statement. The RefluxTM cell showed a plug-flow mixing regime, while ImhoflotTM V-Cell followed the trend of perfect mixing and plug-flow dispersion regimes.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2022, 58, 5; art. no. 155101
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Engineering-geological and geotechnical investigations for risk assessment of the University Olympic Village in Izmir (Turkey)
    Autorzy:
    Kıncal, Cem
    Koca, Mehmet Yalçın
    Yılmaz, H. Recep
    Akgün, Mustafa
    Özyalın, Şenol
    Eskişar, Tuğba
    Akçığ, Zafer
    Loon, A. J. (Tom)
    Powiązania:
    https://bibliotekanauki.pl/articles/94556.pdf
    Data publikacji:
    2010
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    engineering geology
    hazard maps
    bearing capacity
    Izmir
    Turkey
    geologia inżynierska
    mapy zagrożenia
    nośność statyczna
    Turcja
    Opis:
    The Metropolitan Municipality of Izmir (Turkey) designated a steeply inclined area for the construction of buildings to house the participants of the Izmir University Olympic Games. Before the construction activities could start, engineering geological and geotechnical investigations had to be carried out in order to establish which zones in the area were suitable for safe constructions. Seismic studies, borings and laboratory tests yielded the data, which were used for preparing five hazard maps in a GIS environment. The construction activities based on the results of this complex investigation appeared successful. The engineering geological investigations included geotechnical measurements on core samples obtained from the boreholes (core drilling) and laboratory testing. The rock-quality designation (RQD%) values of the rock units were determined and used in the rock-mass classification (rock-mass rating method) as an in-put parameter and in the calculation of the bearing capacity of the various rock units. Geophysical surveys were carried out to determine the seismic velocity of the rocks at the site. A short overview is provided of the main problems that had to be dealt with, and of the successive steps taken to solve the engineering-geological problems. Determination of these problems is necessary for adequate land-use planning and construction activities.
    Źródło:
    Geologos; 2010, 16, 1; 43-57
    1426-8981
    2080-6574
    Pojawia się w:
    Geologos
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Metabolic syndrome in collection and disposal of solid waste sector
    Autorzy:
    Eker, Hasan H.
    Bayraktarli, Recep Y.
    İşsever, Hal.im
    Ulaş, Tümer
    Erelel, Mustafa
    Eser, Al.i
    Özd.ill.i, Kürşat
    Özder, Aclan
    Powiązania:
    https://bibliotekanauki.pl/articles/2180109.pdf
    Data publikacji:
    2012-03-01
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    metabolic syndrome
    disposal
    solid waste workers
    Opis:
    Objectives: This study aims to assess the frequency and factors relevant to metabolic syndrome in workers employed in the collection and disposal of solid waste sector. Materials and Methods: This cross-sectional study was conducted in the major solid waste collecting and disposal company named İSTAÇ AŞ (İstanbul Environmental Protection and Waste Processing Corporation) in Istanbul, Turkey. All 715 male employees of the company were included in the study without sampling. The study was completed with 619 subjects. Since it was a small group, female workers were not taken into account in the study. Metabolic syndrome frequency was investigated according to the NCEP-ATP III criteria including the levels of systolic and diastolic blood pressure, waist perimeter, HDL, triglyceride, fasting blood glucose values. Results: Metabolic syndrome was present in 40.9% of participating employees. Metabolic syndrome was more common in those working in the excavation field (54.0%), such as caterpillar operators (56.5%), and less common in employees working in administrative offices, such as office staff or managers, who were under 35 years old and who had been working for less than 10 years (p < 0.05). Employees working in work stations other than administrative offices had a 2.60 times higher risk compared to those working in administrative offices. Conclusions: Metabolic syndrome may be related to work station, job, age and period worked by the subjects.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2012, 25, 1; 14-21
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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