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Wyszukujesz frazę "Ahmad, Tahir" wg kryterium: Autor

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Prevalence of rotavirus, adenovirus, hepatitis A virus and enterovirus in water samples collected from different region of Peshawar, Pakistan
    Autorzy:
    Ahmad, Tahir
    Arshad, Najma
    Adnan, Fazal
    Sadaf Zaidi, Najam-us-Sahar
    Talha Shahid, Muhammad
    Zahoor, Usman
    Sohail Afza, Muhammad
    Anjum, Sadia
    Powiązania:
    https://bibliotekanauki.pl/articles/989737.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    water
    enteric viruses
    molecular epidemiology
    diagnostic
    public health
    Opis:
    Viral gastroenteritis and other water-borne diseases are the most neglected areas of research in Pakistan. To determine the quality of water, 4 enteric viruses were studied from different localities of Peshawar, Pakistan. The study validates the viral detection method for Rotavirus (RV), Human adenovirus (HAdV), Enterovirus (EV) and Hepatitis A virus (HAV), directly from water sources of rural areas of Peshawar, KPK, Pakistan. Overall, 95 five water samples were tested; among them, 9.47% were positive for RV, 38.94% for HAdV, 48.42% for EV and 12.63% for HAV. The presence of these viruses in water was directly correlated with meteorological data. High prevalence of EV and HAdV was detected frequently in the wet season from May – September, which can be the potential cause of spreading of gastroenteritis in the population. Environmental surveillance is an additional tool to evaluate the epidemiology of enteric viruses circulating in a given community.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2016, 23, 4
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design and analysis of a soft pneumatic actuator to develop modular soft robotic systems
    Autorzy:
    Tahir, Ahmad Mahmood
    Zoppi, Matteo
    Powiązania:
    https://bibliotekanauki.pl/articles/384581.pdf
    Data publikacji:
    2019
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    soft actuator
    pneumatic actuation
    soft robotic mechanism
    modularity
    scalability
    siłownik
    modułowość
    skalowalność
    Opis:
    In this paper, we describe the design and analysis of a Soft Cubic Module (SCM) with a single internal pneumatically actuated chamber. The actuation chamber’s shape, size and, orientation have been evaluated to realize a soft robotic actuator which can be further employed for the development of modular soft robotic systems. SCM can be easily manufactured through the molding process and it is composed of single soft material, the silicone polymer. Its external shape allows utilization of this module as a single block actuator as well as makes it easy to combine multiple SCM modules to build multiunit soft robotic systems. We consider it as our first tool to investigate whether the SCM scheme is sufficient to build soft robots which would be able to perform certain given tasks in various configurations like a soft gripper, bio-mimetic crawling mechanism or multi-axis manipulator. So far, the results obtained are encouraging in order to further develop and employ the SCM design scheme, focusing on its further geometrical optimization for both standalone configuration and assembly of multiple modules to realize novel, economic and easy to fabricate soft robotic systems.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2019, 13, 1; 30-36
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Symmetric Approach in the Three-Dimensional Digital Waveguide Modeling of the Vocal Tract
    Autorzy:
    Mushtaq, Tahir
    Kamran, Ahmad
    Qureshi, Muhammad Zubair Akbar
    Iqbal, Zafar
    Powiązania:
    https://bibliotekanauki.pl/articles/31339832.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    symmetric
    digital waveguide
    vocal tract
    delay lines
    rectilinear uniform grid
    Opis:
    Simulation of wave propagation in the three-dimensional (3D) modeling of the vocal tract has shown significant promise for enhancing the accuracy of speech production. Recent 3D waveguide models of the vocal tract have been designed for better accuracy but require a lot of computational tasks. A high computational cost in these models leads to novel work in reducing the computational cost while retaining accuracy and performance. In the current work, we divide the geometry of the vocal tract into four equal symmetric parts with the introduction of two axial perpendicular planes, and the simulation is performed on only one part. A novel strategy is defined to implement symmetric conditions in the mesh. The complete standard 3D digital waveguide model is assumed as a benchmark model. The proposed model is compared with the benchmark model in terms of formant frequencies and efficiency. For the demonstration, the vowels /ɔ/, /i/, /ɛ/, /ɑ/, and /u/ have been selected for the simulations. According to the results, the benchmark and current models are nearly identical in terms of frequency profiles and formant frequencies. Still the current model is three times more effective than the benchmark model.
    Źródło:
    Archives of Acoustics; 2023, 48, 3; 317-324
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Review on Mechanical Properties of Metakaolin Geopolymer Concrete by Inclusion of Steel Fibers
    Autorzy:
    Faris, Meor Ahmad
    Mohd Mustafa Al Bakri, Abdullayh
    Muniandy, Ratnasamy
    Ramasamy, Shamala
    Abu Hashim, Mohammad Firdaus
    Junaedi, Subaer
    Sandu, Andrei Victor
    Mohd Tahir, Muhammad Faheem
    Powiązania:
    https://bibliotekanauki.pl/articles/2048744.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    geopolymer
    metakaolin
    fiber reinforced concrete
    steel fiber
    mechanical properties
    Opis:
    This study summarised the recent achievement in developing fiber reinforced geopolymer concrete. The factor of replacing Ordinary Portland Cement (OPC) which is due to the emission of carbon dioxide that pollutes the environment globally is well discussed. The introduction towards metakaolin is presented. Besides, the current research trend involved in geopolymer also has been reviewed for the current 20 years to study the interest of researchers over the world by year. Factors that contribute to the frequency of geopolymer research are carried out which are cost, design, and the practicality of the application for geopolymer concrete. Besides, the importance of steel fibers addition to the geopolymer concrete is also well discussed. The fundamental towards metakaolin has been introduced including the source of raw material, which is calcined kaolin, calcined temperature, chemical composition, geopolymerisation process, and other properties. Alkali activators which are mixing solution between sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) have been reviewed. The mechanical properties of fibers reinforced metakaolin-based geopolymer concrete which is compressive and flexural are thoroughly reviewed. The compressive and flexural strength of fiber-reinforced metakaolin geopolymer concrete shows some improvement to the addition of steel fibers. The reviews in this field demonstrate that reinforcement of metakaolin geopolymer concrete by steel fibers shows improvement in mechanical performance.
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 1; 261-267
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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