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    Tytuł:
    Egipskie mocarstwo za rządów Muhammada Alego Paszy
    The Egyptian empire during the reign of Muhammad Ali Pasha
    Autorzy:
    Biernat, Agata
    Powiązania:
    https://bibliotekanauki.pl/articles/566758.pdf
    Data publikacji:
    2012
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie. Instytut Nauk Politycznych
    Tematy:
    Egypt
    Muhammad Ali
    Military power
    Opis:
    Muhammad Ali is regarded as the "Father of Modern Egypt", being the first ruler since the Ottoman conquest in 1517 to permanently divest the Porte of its power in Egypt. Moreover the dynasty that he established would rule Egypt and Sudan until the Egyptian Revolution of 1952 - more than 147 years. As an Ottoman Turkish military leader who ruled Egypt for much of his adult life, Muhammad Ali amassed such military power that he was able to threaten the rule of the Ottoman Sultan himself. He also ruled Levantine territories outside Egypt. The reforms undertaken by MuhammadAli as he centralized his power brought the foundations of modern statehood to Egypt. He put in place a vast military and economic apparatus financed by efficient tax collections Muhammad Ali also modernized education, ordering the translation of European books on a large scale.
    Źródło:
    Forum Politologiczne; 2012, 13 - "Stare" i "nowe" mocarstwa w Afryce - stygmaty kulturowe, religijne, polityczne, ekonomiczne i społeczne; 255-374
    1734-1698
    Pojawia się w:
    Forum Politologiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On inclusion relationships of certain subclasses of meromorphic functions involving integral operator
    Autorzy:
    Muhammad, Ali
    Powiązania:
    https://bibliotekanauki.pl/articles/747194.pdf
    Data publikacji:
    2012
    Wydawca:
    Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
    Tematy:
    Meromorphic functions
    functions with bounded boundary and bounded radius rotation
    quasi-convex functions
    close-to-convex functions
    generalized hypergeometric functions
    functions with positive real part
    Hadamard product (or convolution)
    Opis:
    In this paper, we introduce some subclasses of meromorphic functions in the punctured unit disc. Several inclusion relationships and some other interesting properties of these classes are discussed.
    Źródło:
    Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica; 2012, 66, 1
    0365-1029
    2083-7402
    Pojawia się w:
    Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Okupacja osmańska, czyli rozdźwięk cywilizacyjny w historii Egiptu. Rozmowa z egipskim historykiem Ahmadem Zakarijją asz-Szalakiem
    The Ottoman occupation or a civilisational split in the history of Egypt. Interview with an Egyptian historian Ahmed Zakaria al-Shalaq
    Autorzy:
    Piotrowska, Agnieszka
    Powiązania:
    https://bibliotekanauki.pl/articles/1953900.pdf
    Data publikacji:
    2021-11-28
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    Ottoman occupation
    Turkish colonization
    Muhammad Ali’s reforms
    Egyptian modernity
    Egyptian identity
    okupacja osmańska
    turecki kolonializm
    reformy Muhammada Alego
    egipska modernizacja
    egipska tożsamość
    Opis:
    Wywiad z egipskim historykiem Ahmadem Zakarijją asz-Szalakiem na temat sytuacji Egiptu pod okupacją Turcji Osmańskiej, jej negatywnego wpływu na rozwój cywilizacyjny kraju i modernizacji, którą zapoczątkowały rządy dynastii Muhammada Alego. Uczony podkreśla znaczenie kultury tworzonej w okresie rządów monarchii do wybuchu rewolucji 1952 roku dla odrodzenia Egiptu. Argumentuje, że jego tożsamość jest produktem różnych wpływów kulturowych i nie powinna być przez nikogo zawłaszczana.
    Interview with an Egyptian historian, Dr. Ahmed Zakaria al-Shalaq, about the situation of Egypt under the occupation of the Ottoman Empire, its negative impact on the civilizational development of the country and about modernization initiated by the Muhammad Ali dynasty. The scholar emphasizes the importance of culture created in the period of monarchy until the outbreak of 1952 Revolution for revival of Egypt. He argues that its identity is a product of various cultural influences and should not be appropriated by anyone.
    Źródło:
    Przegląd Krytyczny; 2021, 3, 2; 83-90
    2657-8964
    Pojawia się w:
    Przegląd Krytyczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    TRANSFER MALOWIDEŁ I SZTUKATERII JAKO SPOSÓB RATOWANIA DEKORACJI ŚCIENNYCH NA PRZYKŁADZIE PRAC KONSERWATORSKICH W PAŁACU MUHAMMADA ALEGO W KAIRZE
    THE TRANSFERENCE OF PAINTINGS AND STUCCO AS A METHOD FOR SALVAGING WALL DECORATIONS UPON THE EXAMPLE OF CONSERVATION IN THE MUHAMMAD ALI PALACE IN CAIRO
    Autorzy:
    Filip, Maciej
    Powiązania:
    https://bibliotekanauki.pl/articles/535114.pdf
    Data publikacji:
    2005
    Wydawca:
    Narodowy Instytut Dziedzictwa
    Tematy:
    transfer malowideł ściennych
    przenoszenie sztukaterii
    PałacGabalaya
    Pałac Muhammada Alego Al-Kabir
    Opis:
    The transference of murals is a drastic operation involving fundamental interference in the composition and structure of the original work of art. Despite the obvious side effects, threats, and limitations, transference is, in certain situations, the only possible way to save a historical monument. Apart from the above mentioned negative aspects, the transference of wall decorations is extremely expensive and time-consuming, while the owners, investors, and conservation authorities, contrary to all expectations, not always and not in every case opt for saving threatened monuments at all cost. In many cases, they consider the possibility of removing the preserved but seriously damaged ceiling decorations, and their ensuing reconstruction. This is the reason why the inauguration of work intent on devising and improving rapid and inexpensive methods of transferring and protecting wall decorations appears to be justified. Such methods, apart from the economic and time factors, should take into account yet another condition: the applied material and instruments should be available at the site of conserving the given monument or be sufficiently light and handy to be transported, e. g. by plane. Work on such methods would make it feasible to employ them in cases of cataclysms or armed conflicts; they would be also of assistance in planning repairs, making estimates of the costs, and evaluating objects containing valuable wall decorations. The Gabalaya Pavillon (Palace on a Hill), in which the described work was carried out, is part of a garden-palace complex in Shobra al-Kyahma (one of the districts in northern Cairo). The building was erected in 1808-1823 (1223-1239) by Italian architects and artists commissioned by Muhammad Ali. Generally speaking, the conservation of the ceiling decorations consisted of gluing the loose plaster and painted layer, repairing the wooden construction of the ceiling and protecting it against microorganisms, the removal of repainting and cleaning the original gilding and polychrome, the supplementation of gaps in the plaster, the introduction of uniform colour in the painted decoration, and the reconstruction of larger gaps in the stucco, plaster, and painted decoration. The character of the damage made it necessary to solve a number of untypical conservation problems, such as devising effective ways and methods of gluing plaster pockets and blisters; conceiving methods for straightening and gluing spatial stucco forms; transferring those fragments of the decoration which could no be saved without reinforcing the plaster as well as those whose wooden bases (wooden beams and laths) were classified as suitable for exchange; a transference of a rosette from the main dome; finally, the removal, conservation, and reinstallment of those fragments of the decoration which fell off. A reconstruction of the plaster, stucco, and painted layer would make it possible to recreate the original appearance of the ceiling. The work was performed in a relatively short time. The majority of the material was purchased on the spot or transported by plane from Poland. The conservation was conducted by a team of Egyptian workers under the supervision of two conservators from Poland.
    Źródło:
    Ochrona Zabytków; 2005, 1; 29-40
    0029-8247
    Pojawia się w:
    Ochrona Zabytków
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Probing 3D chaotic Thomas’ cyclically attractor with multimedia encryption and electronic circuitry
    Autorzy:
    Khan, NajeebAlam
    Qureshi, Muhammad Ali
    Akbar, Saeed
    Ara, Asmat
    Powiązania:
    https://bibliotekanauki.pl/articles/27312000.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    Thomas’ cyclically attractor
    fractional calculus
    chaos
    encryption
    Opis:
    This study investigates Thomas’ cyclically symmetric attractor dynamics with mathematical and electronic simulations using a proportional fractional derivative to comprehend the dynamics of a given chaotic system. The three-dimensional chaotic flow was examined in detail with Riemann-Liouville derivative for different values of the fractional index to highlight the sensitivity of chaotic systems with initial conditions. Thus, the dynamics of the fractional index system were investigated with Eigenvalues, Kaplan-Yorke dimension, Lyapunov exponent, and NIST testing, and their corresponding trajectories were visualized with phase portraits, 2D density plot, and Poincaré maps. After obtaining the results, we found that the integer index dynamics are more complex than the fractional index dynamics. Furthermore, the chaotic system circuit is simulated with operational amplifiers for different fractional indices to generate analog signals of the symmetric attractor, making it an important aspect of engineering. The qualitative application of our nonlinear chaotic system is then applied to encrypt different data types such as voice, image, and video, to ensure that the developed nonlinear chaotic system can widely applied in the field of cyber security.
    Źródło:
    Archives of Control Sciences; 2023, 33, 1; 239--271
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis and activity evaluation of Ce-Mn-Cu mixed oxide catalyst for selective oxidation of co in automobile engine exhaust: effect of Ce/Mn loading content on catalytic activity
    Autorzy:
    Bilal, Yasir
    Nasir, Muhammad Ali
    Nasreen, Sadia
    Akhter, Niaz Ahmed
    Pasha, Riffat Asim
    Noor, Muhammad Farhan
    Powiązania:
    https://bibliotekanauki.pl/articles/101992.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    base metal oxide catalyst
    catalytic converter
    CO sensor
    CO-precipitation
    catalytic activity
    katalizator tlenku metalu zasadowego
    katalizator
    czujnik CO
    strącanie CO
    aktywność katalityczna
    Opis:
    A series of Mn-doped CeO2-CuO catalyst (CeO2-MnOx-CuO) (Ce/Mn molar ratio of 0.5, 1.0 2.0 and 3.0) were prepared using co-precipitation method for the selective oxidation of CO in automobile engine exhaust. The content of copper was 5.0 wt. % in each sample. Catalysts were installed on the automobile engine exhaust and CO amount was recorded with help of CO sensor, with and without the catalyst. The catalytic converter efficiency was estimated for each catalyst through efficiency formula. It was observed that Ce/Mn catalyst with a molar ratio of 2.0 shows the maximum efficiency (88.35%). Stability of conversion process was analyzed by plotting the CO amount with respect to time. The catalyst with Ce/Mn molar ratio of 2.0 performed the most streamline conversion process with least deviations.
    Źródło:
    Advances in Science and Technology. Research Journal; 2018, 12, 1; 260-266
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modification of bentonite nanoclay for textile application
    Modyfikacja nano bentonitu do zastosowań włókienniczych
    Autorzy:
    Amir, Muhammad
    Hasany, Syed Farhan
    Asghar, Muhammad Sajid Ali
    Powiązania:
    https://bibliotekanauki.pl/articles/24202774.pdf
    Data publikacji:
    2023
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
    Tematy:
    bentonite
    textile fabrics
    mechanical properties
    bentonit
    tekstylia
    właściwości mechaniczne
    Opis:
    The influence of the bentonite content (1, 3, 5 wt%) on the mechanical properties of lightweight cotton (C), polyester (P) and polyester-cotton (P/C 50/50) fabrics was investigated. Starch was used as a water-insoluble binder for coating fabrics. Bentonite nanoparticles were obtained by repeated hydration, decantation and evaporation of the water dispersion. The bentonite particle size was determined by the XRD method using the Debye-Scherrer equation. The diffraction of the laser beam was used to determine particles size distribution. The addition of bentonite nanoclay significantly improved tensile strength (26-61% and 99–118% in the warp and weft direction, respectively) and tear strength (4‒13% and 5–24% in the wrap and weft direction, respectively) of coated fabrics. Their abrasion resistance has also slightly increased. The biggest changes were noted for the cotton fabric, the smallest for the polyester fabric, which may result from the low compatibility between starch and the polyester fabric.
    Zbadano wpływ zawartości bentonitu (1, 3, 5% mas.) na właściwości mechaniczne lekkich tkanin bawełnianych (C), poliestrowych (P) i poliestrowo-bawełnianych (P/C 50/50). Jako nie-rozpuszczalny w wodzie środek wiążący do powlekania tkanin zastosowano skrobię. Nanocząstki bentonitu otrzymywano poprzez kilkukrotną hydratację, dekantację i odparowanie dyspersji wodnej. Wielkość cząstek bentonitu oznaczono metodą XRD, stosując równanie Debye-Scherrera. Dyfrakcja wiązki laserowej posłużyła do określenia rozkładu wielkości cząstek. Zastosowanie nanoglinki bentonitowej wpłynęło na istotną poprawę wytrzymałości na rozciąganie (o 26‒61% w kierunku osnowy i 99‒118% w kierunku wątku) oraz rozdzieranie (4‒13% w kierunku osnowy i 5‒24% w kierunku wątku) powlekanych tkanin. Nieznacznie zwiększyła się również ich odporność na ścieranie. Największe zmiany zanotowano w przypadku tkaniny bawełnianej, najmniejsze dla tkaniny poliestrowej, co może wynikać z małej kompatybilności między skrobią a tkaniną poliestrową.
    Źródło:
    Polimery; 2023, 68, 2; 79--85
    0032-2725
    Pojawia się w:
    Polimery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identification of potential groundwater recharge sites in a semi-arid region of Pakistan using Saaty’s Analytical Hierarchical Process (AHP)
    Autorzy:
    Suliman, Muhammad
    Samiullah, Khan
    Ali, Muhammad
    Powiązania:
    https://bibliotekanauki.pl/articles/2055773.pdf
    Data publikacji:
    2022
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    Saaty’s Analytical Hierarchical Process (AHP)
    weighted overlay analysis
    semi-arid region
    groundwater potential sites
    GIS and remote sensing
    Opis:
    Groundwater is a precious source of fresh water and a major component of the entire water supply. Both water quality and quantity could be satisfied by evaluating the groundwater potential sites (GWPS). This paper analyzes the ground-water potentials in a semi-arid region of Khyber Pakhtunkhwa, Pakistan. It describes a standard methodology to identify and map GWPS using integrated Geographical Information System (GIS) and remote sensing (RS) methods. Eight parameters including elevation, slope, drainage density, lineaments density, soil, geology, land use/land cover and rainfall were integrated to explore areas with groundwater holding capability. GWPS were delineated through subjective weights assigned after coupling various thematic layers using Saaty’s Analytical Hierarchical Process (AHP). The modelled GWPS were cross-checked with tube wells data. The result indicates that the central part of the study area has good potential for groundwater reserves/exploitation, where the factors i.e. moderate to high drainage density, sedimentary sequence of alluvial plain, low elevation etc. discern the central portion of the study area as a suitable site for groundwater. This study suggests that the applied method proves to be very significant and reliable tool for timely assessment of quality assured evaluation of groundwater resources. This study could be a systematic guide for future investigations for water related explorations, especially in semi-arid environments.
    Źródło:
    Geomatics and Environmental Engineering; 2022, 16, 1; 53--70
    1898-1135
    Pojawia się w:
    Geomatics and Environmental Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hematological Performance and Survival of Common Carp (Cyprinus carpio Linnaeus, 1758) Strain Majalaya Fingerlings Against Temperature Stress
    Autorzy:
    Yustiati, Ayi
    Saefulhadjar, Sadra Muhammad Haydar Ali
    Suryadi, Ibnu Bangkit Bioshina
    Iskandar, Iskandar
    Powiązania:
    https://bibliotekanauki.pl/articles/1031780.pdf
    Data publikacji:
    2020
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Aeromonas hydrophila
    C. c. haematopterus
    Common carp Strain Majalaya
    Cyprinus carpio
    maintenance temperature
    number of erythrocytes
    number of leukocytes
    survival rate
    Opis:
    The research was conducted at the Aquaculture Laboratory of the Faculty of Fisheries and Marine Science, Universitas Padjadjaran, Jatinangor. The purpose of this research is to determine the optimum temperature for the maintenance of Common carp strain Majalaya fingerlings based on resistance to temperature stress that is known through their blood profile and survival rate. Common carp strain Majalaya fingerlings originating from Ciparay, West Java. Total body length is 8-12 cm with a minimum weight of 10 g. The method used is experimental with a completely randomized design (CRD) consisting of three treatments and five replications. The fish are kept at 24 ºC (control without heater), 29 ºC and 34 ºC. Each experimental unit contains 10 fishes. The results obtained by the survival rate (SR) of Common carp strain Majalaya which were maintained at a treatment temperature of 24 ºC by 100%, the 29 ºC by 70%, the 34 ºC by only 42% remained on the 21st day. The number of erythrocytes of common carp strain Majalaya fingerlings before the treatment temperature was 2.77 × 106 cells/mm3. The average number of erythrocytes of the 24ºC treatment from 7th, 14th and 21st day were 2.82, 2.82 and 2.81 × 106 cells/mm3; the 29 ºC were 2.93, 2.68 and 2.42 × 106 cells/mm3; the 34 ºC were 3.08, 2.52 and 1.99 × 106 cells/mm3. While the number of leukocytes of common carp strain Majalaya fingerlings before the treatment temperature was 13.61 × 104 cells/mm3. The average number of leukocytes of the 24 ºC treatment from 7th, 14th and 21st day were 13.73, 13.71 and 13.88 × 104 cells/mm3; the 29 ºC were 18.40, 16.46 and 15.76 × 104 cells/mm3; the 34 ºC were 20.78, 18.46 and 16.81 × 104 cells/mm3.
    Źródło:
    World Scientific News; 2020, 150; 92-104
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The power of ADKAR change model in innovative technology acceptance under the moderating effect of culture and open innovation
    Autorzy:
    Ali, Muhammad Ahmad
    Zafar, Usman
    Mahmood, Asif
    Nazim, Muhammad
    Powiązania:
    https://bibliotekanauki.pl/articles/2021479.pdf
    Data publikacji:
    2021
    Wydawca:
    Wyższa Szkoła Logistyki
    Tematy:
    ADKAR change model
    reinforcement
    uncertainty avoidance
    perceived ease of use
    inbound and outbound open innovation
    perceived usefulness
    model ADKAR
    wzmocnienie
    unikanie niepewności
    łatwość użytkowania
    Opis:
    Background: Continuous change is a vital factor for organization’s sustainable growth and success. The implementation of modern information technology in business has become a core need of the hour. This study endeavours to answer how to cope with resistance to change when implementing new technology in the banking sector. A theoretical model has been developed with the blend of ADKAR change model, Technology Acceptance Model (TAM), and Hofstede dimensions of national culture to investigate the impact of the ADKAR change model on Technology Acceptance under the moderation of two national culture’s dimensions. Materials and Methods: In order to collect data, 500 self-administered questionnaires were dropped personally in five major banks of five cities of Pakistan using the convenience-based employee intercept sampling technique. The validated response rate was 68% by having 340 fit questionnaires for analysis using covariance-based structure equation modelling with the help of SmartPLS. Results: The results uncover the significant existence of covariance between dimensions of the ADKAR change model and technology acceptance model. The findings are statistically significant, inferring the influential role of change management on technology adoption. Conclusion: The study results provide promising implications based on these conclusions and findings for both theoretical aspects of these different models and practitioners.
    Źródło:
    LogForum; 2021, 17, 4; 485--502
    1734-459X
    Pojawia się w:
    LogForum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Deep Neural Network for Supervised Single-Channel Speech Enhancement
    Autorzy:
    Saleem, Nasir
    Irfan Khattak, Muhammad
    Ali, Muhammad Yousaf
    Shafi, Muhammad
    Powiązania:
    https://bibliotekanauki.pl/articles/177497.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    deep neural network
    intelligibility
    speech enhancement
    speech quality
    supervised learning
    Wiener filtering
    Opis:
    Speech enhancement is fundamental for various real time speech applications and it is a challenging task in the case of a single channel because practically only one data channel is available. We have proposed a supervised single channel speech enhancement algorithm in this paper based on a deep neural network (DNN) and less aggressive Wiener filtering as additional DNN layer. During the training stage the network learns and predicts the magnitude spectrums of the clean and noise signals from input noisy speech acoustic features. Relative spectral transform-perceptual linear prediction (RASTA-PLP) is used in the proposed method to extract the acoustic features at the frame level. Autoregressive moving average (ARMA) filter is applied to smooth the temporal curves of extracted features. The trained network predicts the coefficients to construct a ratio mask based on mean square error (MSE) objective cost function. The less aggressive Wiener filter is placed as an additional layer on the top of a DNN to produce an enhanced magnitude spectrum. Finally, the noisy speech phase is used to reconstruct the enhanced speech. The experimental results demonstrate that the proposed DNN framework with less aggressive Wiener filtering outperforms the competing speech enhancement methods in terms of the speech quality and intelligibility.
    Źródło:
    Archives of Acoustics; 2019, 44, 1; 3-12
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Parallelizing user-defined functions in the ETL workflow using orchestration style sheets
    Autorzy:
    Ali, Syed Muhammad Fawad
    Mey, Johannes
    Thiele, Maik
    Powiązania:
    https://bibliotekanauki.pl/articles/331096.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    ETL workflow
    parallel ETL operator
    parallel algorithmic skeleton
    user defined function
    workflow ETL
    równoległy szkielet algorytmiczny
    funkcja zdefiniowana przez użytkownika
    Opis:
    Today’s ETL tools provide capabilities to develop custom code as user-defined functions (UDFs) to extend the expressiveness of the standard ETL operators. However, while this allows us to easily add new functionalities, it also comes with the risk that the custom code is not intended to be optimized, e.g., by parallelism, and for this reason, it performs poorly for data-intensive ETL workflows. In this paper we present a novel framework, which allows the ETL developer to choose a design pattern in order to write parallelizable code and generates a configuration for the UDFs to be executed in a distributed environment. This enables ETL developers with minimum expertise in distributed and parallel computing to develop UDFs without taking care of parallelization configurations and complexities. We perform experiments on large-scale datasets based on TPC-DS and BigBench. The results show that our approach significantly reduces the effort of ETL developers and at the same time generates efficient parallel configurations to support complex and data-intensive ETL tasks.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2019, 29, 1; 69-79
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Does managerial coaching effect subordinates’ feedback orientation? Mediating role of affective supervisory commitment
    Czy coaching kierowniczy wpływa na orientację opinii podległych pracowników? Mediacyjna i emocjonalna rola nadzoru
    Autorzy:
    Ali, Muhammad
    Arbi, Khalil Ahmed
    Raza, Basharat
    Malik, Sania Zahra
    Sheikh, Labiba
    Powiązania:
    https://bibliotekanauki.pl/articles/2021573.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Częstochowska
    Tematy:
    managerial coaching
    affective supervisory commitment
    subordinate feedback orientation
    social exchange
    coaching menedżerski
    emocjonalne zaangażowanie w nadzór
    orientacja na informacje zwrotne podwładnych
    wymiana informacji
    Opis:
    Managerial coaching has become a widely used human resource development strategy to improve various employee outcomes within organizations. However, existing literature lacks empirical evidence regarding the effectiveness of managerial coaching and less known about how managerial coaching influences subordinate feedback orientation through the mediating effect of employees’ commitment to the supervisor. This study uses a structured questionnaire to gather data from a cross-sectional sample of 257 employees working in the banking sector of Lahore, Pakistan, with a response rate of approximately 57%. Structural Equation Modeling (SEM) is used to test the proposed hypotheses. The results reveal that managerial coaching has a positive and direct significant impact on the subordinate feedback orientation and affective supervisory commitment. Affective supervisory commitment has a positive and direct significant relationship with the subordinate feedback orientation. Affective supervisory commitment also mediates the indirect relationship between managerial coaching and subordinate feedback orientation. This research also provides implications for managers and leaders, specifically looking to improve various employee outcomes through managerial coaching in the workplace.
    Coaching menedżerski stał się szeroko stosowaną strategią rozwoju zasobów ludzkich w celu poprawy wyników różnych pracowników w organizacjach. Jednak w istniejącej literaturze brakuje dowodów empirycznych dotyczących skuteczności coachingu menedżerskiego i mniej wiadomo na temat tego, jak coaching menedżerski wpływa na orientację zwrotną podwładnych poprzez mediacyjny efekt zaangażowania pracowników wobec przełożonego. W badaniu tym zastosowano ustrukturyzowany kwestionariusz w celu zebrania danych z przekrojowej próby 257 pracowników zatrudnionych w sektorze bankowym w Lahore w Pakistanie, przy wskaźniku odpowiedzi wynoszącym około 57%. Modelowanie równań strukturalnych (SEM) służy do testowania proponowanych hipotez. Wyniki pokazują, że coaching menedżerski ma pozytywny i bezpośredni znaczący wpływ na orientację zwrotną podwładnych i afektywne zaangażowanie przełożonych. Zaangażowanie w nadzór afektywny ma pozytywny i bezpośredni znaczący związek z podporządkowaną orientacją na informację zwrotną. Zaangażowanie w nadzór afektywny pośredniczy również w pośrednim związku między coachingiem menedżerskim a orientacją zwrotną podwładnych. Badania te dostarczają również implikacji dla menedżerów i liderów, w szczególności chcących poprawić wyniki różnych pracowników poprzez coaching menedżerski w miejscu pracy.
    Źródło:
    Polish Journal of Management Studies; 2020, 22, 2; 9-21
    2081-7452
    Pojawia się w:
    Polish Journal of Management Studies
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Climate change necessitates a change in the cultivation date of caraway (Carum carvi L.)
    Autorzy:
    Ibrahim, Mostafa Fathi
    Ali, Muhammad Moaaz
    Lamlom, Sobhi F.
    Kalaji, Hazem M.
    Yousef, Ahmed F.
    Powiązania:
    https://bibliotekanauki.pl/articles/2174359.pdf
    Data publikacji:
    2022
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    climate change
    condiment
    leafy vegetable
    sowing time
    vegetative growth
    volatile oil
    Opis:
    By 2050, global crop demand is projected to rise by 60-110%. Crop yields have also been impacted by cli mate change in some nations, and these impacts are likely to continue. To prevent the influence of climate change on crop output, it is critical to adjust planting times in weather-related open fields to meet food security concerns. Present study was carried out at Experimental Farm of Faculty of Agriculture, Al-Azhar University, Assiut, Egypt, during two successive seasons, 2019 and 2020. It was aimed to study the effect of different sowing times (1st and 15th October, 1st and 15th November), and plant spacings (25, 20, and 15 cm) on growth, fruit yield, and oil production of caraway (Carum carvi L.) plants. The results showed that sowing caraway plants on 15th October with plant spacing of 25 cm gave the highest dry weight (72.6 g∙plant-1), fresh weight (266.15 g∙plant-1), seed yield (37.43 g∙plant-1), and oil yield (0.659 cm 3∙plant-1). The maximum umbels (50.83 number per plant) and essential oil (1.78%) were also recorded in the plants receiving same treatment. On the other hand, plants sown at 15th November with spacing of 15 cm exhibited the minimum values of recorded traits. While the highest value of plant height gave with sowing caraway plants on 15th October with plant spacing of 15 cm (135.35 cm). In conclusion, the plants sowed on October 15th with a maximum plant spacing of 25 cm had the highest values of the evaluated morphological, biochemical, and yield attributes of caraway.
    Źródło:
    Journal of Water and Land Development; 2022, 54; 38--47
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    EVENT-RELATED POTENTIALS REVEAL IMPAIRED EMOTION-COGNITION INTERACTION IN INDIVIDUALS WITH PUBLIC SPEAKING ANXIETY
    Autorzy:
    Feroz, Farah Shahnaz
    Mat Ali, Muhammad Hairulnizam
    Ismail, Afiq Idzudden
    Salman, Ahmad Rifhan
    Shahbodin, Faaizah
    Powiązania:
    https://bibliotekanauki.pl/articles/2138099.pdf
    Data publikacji:
    2021-11-12
    Wydawca:
    Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
    Tematy:
    public speaking anxiety
    Flanker
    emotion
    cognition
    P200
    N200
    emotiv
    EEG
    Opis:
    This study used reaction time (RT) and event-related potential (ERP) analysis in an emotion-cognition Eriksen-Flanker (ECEF) task to investigate behavioral and neural abnormalities in individuals with public speaking anxiety (PSA). Although 25 per cent of people worldwide suffer from PSA, there is currently a lack of standardized assessment or biomarkers to detect emotion-cognition abnormalities in individuals with PSA. RT and ERP were compared between 12 subjects with high (H) PSA and 12 subjects with low (L) PSA in the ECEF experiment. EEG was recorded with the 14-channel Emotiv EPOC+. RT data showed a significant Flanker Effect across groups in the neutral and emotional (PSA-related) conditions, with increased Flanker effect in the HPSA group. On average, LPSA subjects were faster than the HPSA subjects in the ECEF task. HPSA subjects showed aberrant ERP responses in two ways. Firstly in the reversed N200 conflict effect with increased frontocentral amplitude in the incongruent compared to the congruent condition. Secondly, in the absence of the P200 frontocentral emotional modulation found in LPSA subjects. In the HPSA group, decreased P200 amplitude is significantly related to impaired behavioral performance in the neutral congruent condition. RT and ERP are useful in modern medicine because they successfully unveiled the biomarkers of abnormalities during the interaction of emotion and cognition. Impaired conflict processing in PSA-related condi- tions was found at the N200 and P200 windows in HPSA individuals.
    Źródło:
    Acta Neuropsychologica; 2021, 19(4); 427-443
    1730-7503
    2084-4298
    Pojawia się w:
    Acta Neuropsychologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of Fibre Orientation and Void Content in Bagasse Fibre Composites Using an Image Analysis Technique
    Zastosowanie techniki analizy obrazu do badania orientacji włókien i zawartości pustych przestrzeni w kompozytach wzmocnionych włóknami bagasse
    Autorzy:
    Siddique, Sheraz Hussain
    Faisal, Saira
    Mohtashim, Qurat-ul-Ain
    Ali, Muhammad
    Gong, R. Hugh
    Powiązania:
    https://bibliotekanauki.pl/articles/1419413.pdf
    Data publikacji:
    2021
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
    Tematy:
    composites
    bagasse fibre
    fibre orientation
    void content
    weight percentage
    alkali treatment
    kompozyty
    włókno bagasse
    orientacja włókien
    zawartość wolnej przestrzeni
    procent wagowy
    obróbka alkaliczna
    Opis:
    In this research work, a nondestructive technique of image analysis was explored to determine the fibre orientation and void content in Bagasse fibre reinforced composites. Fibre length, alkali treatment and fibre loading were studied as variables. The fibre orientation was irrespective of the fibre length, fibre loading and alkali treatment variables. The void content and size decreased with increases in fibre length and alkali treatment. The alkali treatment resulted in the removal of lignin, making the surface of the fibres rough. It also led to making the fibre count fine i.e. reducing the diameter of the fibres and thus presenting more fibres for interaction with resin. Both these phenomena resulted in a slower flow of resin. The void content of bagasse fibre composites decreased with higher fibre loading because a higher number of fibres slows the resin flow. However, the size i.e. area of the voids increased with the fibre loading from 20 to 30%, probably due to increased wetting difficulty.
    W pracy badawczej zbadano nieniszczącą technikę analizy obrazu w celu określenia orientacji włókien i zawartości pustych przestrzeni w kompozytach wzmocnionych włóknem bagasse. Jako zmienne zbadano długość włókien, obróbkę alkaliami i obciążenie włókien. Orientacja włókien była niezależna od długości włókna, obciążenia włókna i parametrów obróbki alkalicznej. Ilość i rozmiar pustych przestrzeni zmniejszały się wraz ze wzrostem długości włókna i obróbką alkaliczną. Obróbka alkaliczna spowodowała usunięcie ligniny, powodując szorstkość powierzchni włókien. Doprowadziło to również do dokładnego zliczenia włókien, tj. zmniejszenia średnicy włókien, a co za tym idzie większej liczby włókien w interakcji z żywicą. Oba te zjawiska spowodowały wolniejszy przepływ żywicy. Ilość pustych przestrzeni w kompozytach włókien bagasse zmniejszyła się wraz ze wzrostem obciążenia włókien, ponieważ większa liczba włókien spowalnia przepływ żywicy. Jednak rozmiar, tj. obszar pustych przestrzeni, wzrastał wraz z obciążeniem włókien od 20% do 30%, prawdopodobnie z powodu zwiększonej trudności zwilżania.
    Źródło:
    Fibres & Textiles in Eastern Europe; 2021, 3 (147); 26-32
    1230-3666
    2300-7354
    Pojawia się w:
    Fibres & Textiles in Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Vibration Based Gear Fault Diagnosis under Empirical Mode Decomposition and Power Spectrum Density Analysis
    Autorzy:
    Akram, M. Ammar
    Khushnood, Shahab
    Tariq, Syeda Laraib
    Ali, Hafiz Muhammad
    Nizam, Luqman Ahmad
    Powiązania:
    https://bibliotekanauki.pl/articles/102795.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    spur gears
    tooth breakage
    vibration amplitude
    empirical mode decomposition
    power spectrum density
    time waveform
    koła zębate czołowe
    pękanie zęba
    amplituda drgań
    rozkład w trybie empirycznym
    gęstość widmowa mocy
    przebieg czasowy
    Opis:
    Rotating machinery plays a significant role in industrial applications and covers a wide range of mechanical equipment. A vibration analysis using signal processing techniques is generally conducted for condition monitoring of rotary machinery and engineering structures in order to prevent failure, reduce maintenance cost and to enhance the reliability of the system. Empirical mode decomposition (EMD) is amongst the most substantial non-linear and non-stationary signal processing techniques and it has been widely utilized for fault detection in rotary machinery. This paper presents the EMD, time waveform and power spectrum density (PSD) analysis for localized spur gear fault detection. Initially, the test model was developed for the vibration analysis of single tooth breakage of spur gear at different RPMs and then specific fault was introduced in driven gear under different damage conditions. The data, recorded by means of a wireless tri-axial accelerometer, was then analyzed using EMD and PSD techniques and the results were plotted. The results depicted that EMD algorithms are found to be more functional than the ordinarily used PSD and time waveform techniques.
    Źródło:
    Advances in Science and Technology. Research Journal; 2019, 13, 3; 192-200
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Equilibrium, kinetics and thermodynamic study of the adsorptive removal of methylene blue from industrial wastewater by white cedar sawdust
    Autorzy:
    Gardazi, Syed Mubashar H.
    Shah, Jehanzeb Ali
    Ashfaq, Tayyab
    Sherazi, Tauqir A.
    Ali, Muhammad Arif
    Pervez, Arshid
    Rashid, Naim
    Iqbal, Javed
    Amin, Bilal Ahmad Zafar
    Bilal, Muhammad
    Powiązania:
    https://bibliotekanauki.pl/articles/207373.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    methylene blue
    industrial wastewater
    white cedar sawdust
    WCS
    dye adsorption
    błękit metylenowy
    ścieki przemysłowe
    trociny białego cedru
    adsorpcja barwników
    Opis:
    The study evaluated the adsorption potential of white cedar sawdust (WCS) for dye removal. WCS was chosen from five preferred, abundant waste biomasses from Pakistan. Various parameters such as contact time, adsorbent dose, dye concentration, pH, and particle size were optimized for methylene blue (MB) dye adsorption. The adsorbent was characterized by FTIR, SEM, EDX and BET analyses. The surface area of the adsorbent was 1.43 m2·g-1 and pore volume was 0.000687 cm3·g-1. The adsorption data best fitted the isotherm models of Langmuir, Temkin, Dubinin–Radushkevich, and Freundlich. The maximum experimental adsorption capacity obtained was 55.15 mg·g-1, which was in close agreement to the calculated adsorption capacity. Fitness of the pseudo-second order kinetics suggested chemisorption as the rate-limiting step. Thermodynamic study for adsorption was carried out to evaluate the Gibbs free energy (ΔG°), enthalpy (ΔH°) and entropy (ΔS°). The negative values ΔG° at the examined temperature range confirmed the spontaneous adsorption of MB onto WCS.
    Źródło:
    Environment Protection Engineering; 2019, 45, 3; 5-22
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Radiation induced degradation of Congo red dye: a mechanistic study
    Autorzy:
    Muner, Majid
    Saeed, Muhammad
    Bhatti, Ijaz Ahmad
    Haq, Atta-ul
    Khosa, Muhammad Kaleem
    Jamal, Muhammad Asghar
    Ali, Saddaqat
    Powiązania:
    https://bibliotekanauki.pl/articles/146490.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    Congo red
    radiolytic product
    irradiation
    advanced oxidation process
    Opis:
    Synthetic dyes are persistent pollutants with poor biodegradability. The present study is about the degradation of direct Congo red dye in aqueous media using the Co-60 gamma radiation source. The experimental conditions such as gamma-ray absorbed doses, amount of oxidant (H2O2) and pH conditions were evaluated. The lambda max of dye solution was noted as 498 nm, and then, decrease in absorbance and reduction in chemical oxygen demand (COD) were examined. The complete colour removal of dye was observed at 5 kGy, while a signifi cant COD removal was observed at 15 kGy gamma-ray absorbed dose in conjunction with oxidant for 50 mg/L concentration. It was found that pH has no influence on degradation efficiency. A possible degradation pathway was proposed. The radiolytic end products were monitored by Fourier transform infrared (FTIR) and gas chromatography coupled with mass spectrometry (GC-MS) to explore the degradation mechanism. It was imperative to study the oxidative degradation pathway to provide directions for potential applicability of advanced oxidation process (AOP) in industrial wastewater treatment.
    Źródło:
    Nukleonika; 2019, 64, 2; 49-53
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Control of optical chaos spectrum in semiconductor laser for secure RoF communication
    Autorzy:
    Mazhar, Danish Ali
    Ali, Syed Zafar
    Islam, Muhammad Khawar
    Powiązania:
    https://bibliotekanauki.pl/articles/2172849.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    chaos
    radio over fiber
    secure optical communication
    Opis:
    A critical requirement in optical chaos based secure radio over fiber (RoF) system design is the ability to control center frequency, spectral bandwidth, power level and signature of chaos to submerge message with sufficient horizontal and vertical margins both in time and frequency domains. Once frequency domain masking is completely achieved, time domain masking is met automatically, the former being more stringent. In a direct modulated semiconductor laser, the three control parameters are bias current (Ibias), modulation current (Imod) and modulation frequency (ωa). It is found that Imod increases bandwidth and amplitude dynamic range of chaotic pulses. Ibias increases the cavity power and hence average peak amplitude of laser chaotic pulses. The modulation frequency increases the speed of overall cavity dynamics and hence is used to increase the bandwidth of chaos but a corresponding increase in bias and modulation currents is required to support high repetition pulses. The results show relationship between three control parameters (bias current, modulation current and modulation frequency) in a direct modulated semiconductor laser and optical chaos bandwidth using regression.
    Źródło:
    Optica Applicata; 2022, 52, 4; 485--495
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Observer design estimating the propofol concentration in PKPD model with feedback control of anesthesia administration
    Autorzy:
    Ilyas, Muhammad
    Khan, Awais
    Khan, Muhammad Abbas
    Xie, Wei
    Riaz, Raja Ali
    Khan, Yousaf
    Powiązania:
    https://bibliotekanauki.pl/articles/2106507.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    pharmacokinetic models
    pharmacodynamic model
    bispectral index monitor
    observer design
    sliding mode control
    Opis:
    Propofol infusion in anesthesia administration requires continual adjustment in the manual infusion system to regulate the hypnosis level. Hypnotic level is based on Bispectral Index Monitor (BIS) showing the cortical activity of the brain scaled between 0 to 100. The new challenging aspect of automation in anaesthesia is to estimate the concentration of hypnotic drugs in different compartments of the body including primary, rapid peripheral (muscle), slow peripheral (bones, fat) and effect site (brain) compartment based on Pharmacokinetics (PK) and Pharmacodynamics (PD) model. This paper aimed to regulate the hypnosis level with estimating the Propofol concentrations using a linear observer in feedback control strategy based on Integral Super-Twisting Sliding Mode Controller (ISTSMC). The drug concentration in plasma of the silico patients accurately estimated in nominal transient. The results show that tracking errors between the actual output in form of BIS level and linearized output nearly approaches to zero in the maintenance phase of anesthesia to ensure the controller response on sliding phase with optimum performances by achieving desired hypnotic level 50 on BIS. The robustness of control strategy is further ensured by adding measurement noise of electromagnetic environment of operation theatre distracting signal quality index of the output BIS level.
    Źródło:
    Archives of Control Sciences; 2022, 32, 1; 85--103
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bayesian estimation of a geometric distribution using informative priors based on a Type-I censoring scheme
    Autorzy:
    Akhtar, Nadeem
    Khan, Sajjad Ahamad
    Amin, Muhammad
    Khan, Akbar Ali
    Ali, Amjad
    Manzoor, Sadaf
    Powiązania:
    https://bibliotekanauki.pl/articles/20311948.pdf
    Data publikacji:
    2023-06-13
    Wydawca:
    Główny Urząd Statystyczny
    Tematy:
    prior distribution
    posterior distribution
    geometric distribution
    beta distribution
    Kumraswamy distribution
    Opis:
    In this paper, the geometric distribution parameter is estimated under a type-I censoring scheme by means of the Bayesian estimation approach. The Beta and Kumaraswamy informative priors, as well as five loss functions are used for this purpose. Expressions of Bayes estimators and Bayes risks are derived under the Squared Error Loss Function (SELF), the Quadratic Loss Function (QLF), the Precautionary Loss Function (PLF), the Simple Asymmetric Precautionary Loss Function (SAPLF), and the DeGroot Loss Function (DLF) using the two aforementioned priors. The prior densities are obtained through prior predictive distributions. Simulation studies are carried out to make comparisons using Bayes risks. Finally, a real-life data example is used to verify the model’s efficiency.
    Źródło:
    Statistics in Transition new series; 2023, 24, 3; 257-263
    1234-7655
    Pojawia się w:
    Statistics in Transition new series
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mode-route choice decisions: a case study of CPEC investment in Pakistan railways
    Autorzy:
    Ali, Yousaf
    Sabir, Muhammad
    Powiązania:
    https://bibliotekanauki.pl/articles/2173449.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    AHP-TOPSIS
    hybrid-CDM
    route-mode choice
    wybór trybu pracy
    Opis:
    . This study proposes the use of multi-criteria decision models (MCDM) for transportation mode-route choice decisions. This method is beneficial when trips' microdata are unavailable. Route-mode choice decisions were investigated for three public transportation modes (buses, railways, and airlines) in the post-China Pakistan Economic Corridor (CPEC) investment in Pakistan Railways (PR) for a link between Peshawar and Karachi. TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution) was used for the mode choice decisions and a hybrid model of AHP (Analytical Hierarchy Approach) – TOPSIS was used for the route choice decision ML-1 link of PR. This study concludes that rails were the best mode of transportation in post-CPEC investment. Furthermore, route 3, linking Karachi to Peshawar via Lodhran, Multan, and Miniawali, is the best route connection among the four considered routes.
    Źródło:
    Zeszyty Naukowe. Transport / Politechnika Śląska; 2022, 115; 5--21
    0209-3324
    2450-1549
    Pojawia się w:
    Zeszyty Naukowe. Transport / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of neutrophil phagocytic, complement functions, and cytokines expression among diabetic patients in Abuja, Nigeria
    Autorzy:
    Babandina, Musa Muhammad
    Mainasara, Abdullahi Suleiman
    Bakare, Mustapha
    Emeribe, Anthony Uchenna
    Shuwa, Halima Ali
    Haruna, Shamsuddeen
    Muhammad, Aminu Said
    Abdullahi, Idris Nasir
    Powiązania:
    https://bibliotekanauki.pl/articles/454973.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
    Tematy:
    diabetes mellitus
    effector molecules
    pro-inflammatory markers
    Opis:
    Introduction. Inflammatory response in Diabetes Mellitus (DM) begins with chronic sub-clinical inflammations as a result of insulin resistance and activation of both innate and adaptive immune system as the disease progresses to complicated diabetes. Hence, the present study investigated the neutrophil phagocytic, complement function (CH50), and some cytokine profiles among diabetic and non-diabetic patients attending the National Hospital in Abuja, Nigeria. Aim. To evaluate the neutrophil phagocytic, complement function (CH50), and some cytokine profiles among post-operative septic diabetic and post-operative septic non-diabetic patients at the National Hospital in Abuja, Nigeria. Material and methods. Subjects were recruited by convenient sampling technique through interviewer-administered questionnaires. Subsequently, blood samples were collected. Fasting blood sugar (FBS) (mmol/L) was determined using glucose oxidase method. Neutrophil function test (Fmol/phag) was assayed using nitroblue tetrazolium reduction test (NBT). Hemolytic complement function (CH 50) test was conducted using serum harvested from sheep sensitized with human group (ORh D +ve) red blood cells. While serum Interleukin-4, -6, -10 and TNF- α were determined using Enzyme Linked Immunosorbent Assay (ELISA). Results. Mean ± Standard deviation (SD) of FBS concentration of 10.5 ± 1.3 (mmol/|L) among diabetic and 4.7 ± 0.9 (mmol/L) among non-diabetics was recorded. There is a decrease in neutrophil phagocytic function with a mean ± SD of 5.4 ± 2.1 (Fmol/ phag) in diabetics compared to 9.2 ± 2.1 (Fmol/phag) in non-diabetics. Similarly, complement (CH 50) function and C-reactive protein were significantly lower in diabetics when compared to non-diabetics (p<0.001). There was a significant difference in IL-6 concentration between diabetics and non-diabetics groups, but no significant difference was observed in TNF-α, IL-4 and IL-10 concentrations between study groups (p>0.05). TNF-α and IL-6 was significantly higher in diabetics with cardiovascular disorders compared to non-diabetics subjects with cardiovascular disorders (p<0.001). Conclusion. Findings from this study revealed the association of complement, neutrophil phagocytic function, CRP and IL-6 among septic diabetic patients,. In addition TNF-α and IL-6 expression was higher in DM patients with cardiovascular disorders.
    Źródło:
    European Journal of Clinical and Experimental Medicine; 2019, 3; 229-235
    2544-2406
    2544-1361
    Pojawia się w:
    European Journal of Clinical and Experimental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    VALIDATION OF HEPATOPROTECTIVE USE OF POLYGONUM PERFOLIATUM EXTRACT AGAINST PARACETAMOL INDUCED TOXICITY IN WISTAR RATS
    Autorzy:
    Saleem, Mohammad
    Mushtaq, Muhammad Fahd
    Akhtar, Muhammad Furqan
    Saleem, Ammara
    Zahid, Sara
    Sharif, Ali
    Akhtar, Bushra
    Dar, Eshwa
    Ullah, Majeed
    Badshah, Munair
    Powiązania:
    https://bibliotekanauki.pl/articles/895499.pdf
    Data publikacji:
    2019-04-30
    Wydawca:
    Polskie Towarzystwo Farmaceutyczne
    Tematy:
    HPLC
    paracetamol
    hepatotoxicity
    vitamin E
    quercetin
    hepatoprotective
    Opis:
    The liver as a vital body organ is adversely affected by hazardous chemicals and drugs. Paracetamol widely used as analgesic and antipyretic drug produces severe hepatotoxicity at high doses. Present study was designed to investigate the hepatoprotective activity of Polygonum perfoliatum L. used on folklore basis. Aqueous methanolic extract of the plant was prepared. Preliminary phytochemical and HPLC analyses were carried out to identify and quantify chemical constituents respectively. For hepatoprotective activity, Wistar rats were divided into six groups as normal control, standard (silymarin) control, negative control and extract treated groups i.e., 125, 250 and 500 mg/kg/day per oral. Paracetamol was administered orally, following seven days of previously stated therapy. Biochemical parameters of hepatotoxicity such as serum glutamic pyruvate transaminase (SGPT), serum glutamic oxaloacetate transaminase (SGOT), alkaline phosphatase (ALP) and total bilirubin were measured in all groups. Histopathological evaluation of liver was also carried out. Benzoic acid, chlorogenic acid, gallic acid, m-coumaric acid, quercetin and vitamin E were detected in the plant extract through HPLC. The hepatoprotective effect of 500 mg/kg/day therapy was more pronounced than 125 and 250 mg/kg dose. However, the effect of plant extract was less pronounced than standard silymarin therapy. It can be concluded that the plant extract possessed significant hepatoprotective activity that may be attributed to quercetin, benzoic acid, gallic acid and vitamin E present in it.
    Źródło:
    Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 2; 283-289
    0001-6837
    2353-5288
    Pojawia się w:
    Acta Poloniae Pharmaceutica - Drug Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sustained Release of Drug Facilitated Through Chemically Crosslinked Polyvinyl Alcohol-Gelatin (PVA-GE) Hydrogels. A sustainable biomedical approach
    Autorzy:
    Ali, Shaukat
    Ranjha, Nazar Muhammad
    Ahmad, Bashir
    Khan, Ayaz Ali
    Hassan, Fakhr Ul
    Aziz, Tariq
    Alharb, Metab
    Alshammari, Abdulrahman
    Alasmari, Abdullah F.
    Alharbi, Mousa Esa
    Powiązania:
    https://bibliotekanauki.pl/articles/27315648.pdf
    Data publikacji:
    2023
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    hydrogel
    gelatin
    drug release
    ciprofloxacin HCl
    polyvinyl alcohol
    Opis:
    The present study aimed to prepare hydrogel based on polyvinyl alcohol (PVA) and gelatin (Ge) and characterization of PVA/Ge hydrogel for their potential use as a sustained drug delivery system. Polyvinyl Alcohol (PVA) and-Gelatin (Ge) were cross-linked using glutaraldehyde (GA) as a crosslinking agent and hydrochloric acid (HCl) as a catalyst. Different feed polymer ratio and crosslinking agent concentration were used to prepare a series of PVA/Ge hydrogels. The obtained PVA/Ge hydrogels were investigated for dynamic and equilibrium swelling studies. The effect of polymers ratio, degree of crosslinking and pH of the medium on swelling of PVA/Ge hydrogels was investigated. Furthermore, the values of diffusion coeficient (D), volume fraction, polymer-solvent interaction parameter, molecular weight between crosslink and crosslink density were calculated. For swelling studies, 0.05M USP phosphate buffer solutions of different pH (1.2, 5.5, 6.5 and 7.5) were used. For the drug release study, ciprofloxacin HCl was loaded into selected samples as a model drug. The release of drug from these samples was performed for 12 hours in USP phosphate buffers of pH 1.2, 5.5 and 7.5. The release data from these samples were fitted into various kinetic models like zero order, first order, Higuchi and Peppas models to investigate the release mechanism. It was found that by varying the composition of PVA/Ge hydrogel and GA concentration, a significant difference was observed in drug release kinetics. FTIR spectroscopy and X-ray diffraction were used for the characterization of hydrogels. PVA/Ge hydrogel showed sustained release of the model drug at various pH values suggesting its potential use as a sustained drug delivery system.
    Źródło:
    Polish Journal of Chemical Technology; 2023, 25, 2; 56--65
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of LMX as Mediator in Procedural Justice – Organizational Citizenship Behavior Relationship
    Autorzy:
    Ishaq, Muhammad Ishtiaq
    Nazia, Munazer Hussain
    Nawaz, Muhammad Musarrat
    Asim, Ali Ijaz
    Cheema, Luqman J.
    Powiązania:
    https://bibliotekanauki.pl/articles/45636411.pdf
    Data publikacji:
    2012-09-30
    Wydawca:
    Wydawnictwo Adam Marszałek
    Tematy:
    faculty
    higher education
    LMX
    OCB
    Pakistan
    procedural justice
    universities
    Opis:
    Scant literature is available on procedural justice – organizational citizenship behaviour (OCB) via mediating role of leader-member exchange (LMX) in higher education context especially in Asian countries like Pakistan. For this purpose, data was collected from 452 permanent and contractual teaching faculty serving in different positions at private and public sector degree awarding institutes / universities accredited by the Higher Education Commission (HEC) of Pakistan. Mediated regression analysis, as proposed by Baron and Kenny (1986), was employed to address the research hypothesis. Results showed that LMX fully mediates the relationship of procedural justice OCB. Implications for future researchers and academic administrators are presented.
    Źródło:
    The New Educational Review; 2012, 29; 202-211
    1732-6729
    Pojawia się w:
    The New Educational Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Holistic human resource development model in health sector : a phenomenological approach
    Holistyczny model rozwoju zasobów ludzkich w sektorze zdrowia : podejście fenomenologiczne
    Autorzy:
    Arshad, Mohd Anuar
    Shabbir, Muhammad Salman
    Mahmood, Arshad
    Sulaiman, Mohammed Ali Bait Ali
    Khan, Shahid
    Powiązania:
    https://bibliotekanauki.pl/articles/405991.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Częstochowska
    Tematy:
    spiritual quotient
    human resource development
    HRD
    phenomenological approach
    iloraz duchowy
    rozwój zasobów ludzkich
    podejście fenomenologiczne
    Opis:
    This study proposed holistic human resource development model in health sector. This study focused on human resources (HR) managers and the top management of the health sector in Pakistan. Using a qualitative methodology, the researcher focused on the selected phenomenological method. In this study, primary data collection was conducted through personal interviews with human resource managers and the top management of three health organizations in Pakistan. With regard to the sampling technique, the study would be based on a specific sampling. This article presents the results of the three research objectives. The first research objective examines the development and implementation process of the human resource development model in organizations. Second, intelligence quotient and emotion quotient programs are defined by organizations within the current human resource development models. Third, this study examines the organization's understanding of spiritual quotient and evaluates awareness of the importance of spiritual quotient for the development of human resource development model. It suggests that spiritual quotient is an important part of organizational development.
    W badaniu zaproponowano holistyczny model rozwoju zasobów ludzkich w sektorze opieki zdrowotnej. To badanie koncentrowało się na menedżerach ds. Zasobów ludzkich (HR) i najwyższym kierownictwie sektora opieki zdrowotnej w Pakistanie. Korzystając z metodologii jakościowej, badacz skoncentrował się na wybranej metodzie fenomenologicznej. W tym badaniu gromadzono dane pierwotne w drodze wywiadów osobistych z menedżerami ds. Zasobów ludzkich i najwyższym kierownictwem trzech organizacji zdrowotnych w Pakistanie. W odniesieniu do techniki pobierania próbek badanie opierałoby się na konkretnym pobieraniu próbek. W tym artykule przedstawiono wyniki trzech celów badawczych. Pierwszy cel badawczy dotyczy procesu opracowywania i wdrażania modelu rozwoju zasobów ludzkich w organizacjach. Po drugie, iloraz inteligencji i iloraz emocji są definiowane przez organizacje w ramach obecnych modeli rozwoju zasobów ludzkich. Po trzecie, badanie to bada zrozumienie ilorazu duchowego przez organizację i ocenia świadomość znaczenia ilorazu duchowego dla rozwoju modelu rozwoju zasobów ludzkich. Sugeruje, że iloraz duchowy jest ważną częścią rozwoju organizacji.
    Źródło:
    Polish Journal of Management Studies; 2019, 20, 1; 44-53
    2081-7452
    Pojawia się w:
    Polish Journal of Management Studies
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Image encryption based on Chebyshev chaotic map and S8 S-boxes
    Autorzy:
    Hussain, Iqtadar
    Anees, Amir
    Alkhaldi, Ali Hussain
    Aslam, Muhammad
    Siddiqui, Nasir
    Ahmed, Rehan
    Powiązania:
    https://bibliotekanauki.pl/articles/173918.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    image encryption
    chaos
    noise-resistant
    statistical analysis
    key sensitivity
    Opis:
    The encryption of image data is artful as compare to others due to some special characteristics such as entropy, contrast, the correlation between the pixels, intensity, and homogeneity. During encryption process, it is conventionally not easy to manage these characteristics with non-chaotic cryptosystems. Therefore for the sake of strong encryption algorithms, in last decades many cryptographers have presented invulnerable schemes for image encryption based on the chaotic maps. This manuscript aims to propose a strong encryption scheme based on a symmetric group of permutation advanced encryption standard (AES) substitution boxes and modified Chebyshev map. Principally, the secret key depends upon the parameters of Chebyshev map to create confusion in the main image and is encrypted by the scheme made from the S8 AES S-boxes and chaotic map. By this procedure, one can obtain an encrypted image that is entirely twisted. The results of analyses showed that the presented image encryption is strong and invulnerable.
    Źródło:
    Optica Applicata; 2019, 49, 2; 317-330
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    First report on implementation of response surface methodology for the biodegradation of textile industrial effluents by Coniophora puteana IEBL-1
    Autorzy:
    Mahmood, Raja T.
    Asad, Muhammad J.
    Asgher, Muhammad
    Zainab, Tayyaba
    Zafar, Mudassar
    Hadri, Saqib H.
    Ali, Imran
    Zaman, Nasib
    Wattoo, Feroza H.
    Powiązania:
    https://bibliotekanauki.pl/articles/204720.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Coniophora puteana IEBL-1
    response surface methodology
    biodegradation
    laccase
    lignin peroxidase
    diphenylamine
    Opis:
    The current study was aimed to evaluate the industrial effluents biodegradation potential of an indigenous microorganism which reduced water pollution caused by these effluents. In the present study biodegradation of three textile industrial effluents was performed with locally isolated brown rot fungi named Coniophora puteana IEBL-1. Response Surface Methodology (RSM) was employed under Box Bhenken Design (BBD) for the optimization of physical and nutritional parameters for maximum biodegradation. Quality of treated effluents was checked by study of BOD, COD and analysis through HPLC. Three ligninolytic enzymes named lignin peroxidase, manganese peroxidase and laccase were also studied during the biodegradation process. The results showed that there was more than 85% biodegradation achieved for all three effluents with decrease in Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) below the recommended values for industrial effluent i.e. 80 mg/L for BOD and 220 mg/L for COD after optimization of nutritional parameters in the second stage. Analysis of samples through HPLC revealed the formation of less toxic diphenylamine, 3-methyldiphenylamine and N-methylaniline after treatment. The ligninolytic enzymes assays confirmed the role of lignin peroxidase (LiP), manganese peroxidase (MnP) and laccase in biodegradation process. Lignin peroxidase with higher activity has more contribution in biodegradation of effluents under study. It can be concluded through the results that Coniophora buteana IEBL-1 is a potential fungus for the treatment of industrial effluents.
    Źródło:
    Archives of Environmental Protection; 2019, 45, 4; 48-59
    2083-4772
    2083-4810
    Pojawia się w:
    Archives of Environmental Protection
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical analysis of the compositional graded quaternary barrier AlGaN-based ultraviolet-C light-emitting diode
    Autorzy:
    Malik, S.
    Usman, Muhammad
    Hussain, M.
    Munsif, M.
    Khan, S.
    Rasheed, S.
    Ali, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1818193.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
    Tematy:
    ultraviolet
    light-emitting diodes
    efficiency
    quantum wells
    Opis:
    The compositional graded quaternary barriers (GQBs) instead of ternary/conventional quantum barriers (QBs) have been used to numerically enhance the efficiency of AlGaN-based ultraviolet light-emitting diode (LED). The performance of LED with GQBs is examined through carrier concentrations, energy band diagrams, radiative recombination, electron and hole flux, internal quantum efficiency (IQE), and emission spectrum. As a function of the operating current density, a considerable reduction in efficiency droop is observed in the device with composition-graded quaternary barriers as compared to the conventional structure. The efficiency droop in case of a conventional LED is ~77% which decreased to ~33% in case of the proposed structure. Moreover, the concentration of electrons and holes across the active region in case of the proposed structure is increased to ~156% and ~44%, respectively.
    Źródło:
    Opto-Electronics Review; 2021, 29, 3; 80--84
    1230-3402
    Pojawia się w:
    Opto-Electronics Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical analysis of the compositional graded quaternary barrier AlGaN-based ultraviolet-C light-emitting diode
    Autorzy:
    Malik, S.
    Usman, Muhammad
    Hussain, M.
    Munsif, M.
    Khan, S.
    Rasheed, S.
    Ali, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1818198.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
    Tematy:
    ultraviolet
    light-emitting diodes
    efficiency
    quantum wells
    Opis:
    The compositional graded quaternary barriers (GQBs) instead of ternary/conventional quantum barriers (QBs) have been used to numerically enhance the efficiency of AlGaN-based ultraviolet light-emitting diode (LED). The performance of LED with GQBs is examined through carrier concentrations, energy band diagrams, radiative recombination, electron and hole flux, internal quantum efficiency (IQE), and emission spectrum. As a function of the operating current density, a considerable reduction in efficiency droop is observed in the device with composition-graded quaternary barriers as compared to the conventional structure. The efficiency droop in case of a conventional LED is ~77% which decreased to ~33% in case of the proposed structure. Moreover, the concentration of electrons and holes across the active region in case of the proposed structure is increased to ~156% and ~44%, respectively
    Źródło:
    Opto-Electronics Review; 2021, 29, 3; 80--84
    1230-3402
    Pojawia się w:
    Opto-Electronics Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Conversion of cleaned Oltu-stone wastes (a semi-precious stone) into a valuable product using binderless agglomeration
    Autorzy:
    Bawani, Muhammad Raheel
    Arol, Ali İhsan
    Tozsin, Gulsen
    Torun, Abdulvahit
    Powiązania:
    https://bibliotekanauki.pl/articles/24148662.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    agglomeration
    cleaned Oltu-stone waste
    pressed Oltu-stone
    aliphatic carbon
    Opis:
    Oltu-stone, a semi-precious stone found in Erzurum's Oltu area, is commonly utilized in the creation of decorative ornaments. More than 90% of the Oltu-stone mined is classified as Oltu-stone waste, consisting of poor Oltu-stone due to mineral impurities and small fragment sizes (OW). This waste is thrown or burnt, resulting in financial losses. Such losses might be reduced by using Oltu-stone waste (OW) instead of standard Oltu-stone (SO). The purpose of this study was to convert Oltu-stone waste into a useful pressed product. It was cleaned using the float-sink method with a density of 1.25 g.cm-3 and then utilized for binderless high-pressure agglomeration to create pressed Oltu-stone. The physical, mechanical, microscopic, and spectroscopic characteristics of the material were investigated. The bulk density of pressed Oltu-stone was reported to be 1.22-1.26 g.cm-3. However, with the same pressing time, indirect tensile strength was identical and varied when the pressing time was changed. The surface morphology of the crushed Oltu-stone revealed that it was more intact and had a less porous structure. Oltu-stone includes a lot of volatile matter and aliphatic carbon structures because of its high liptinite content. An FTIR investigation revealed that altering the pressing time affects the chemical structure but not the pressure. This effect was seen in molecules containing oxygen, namely conjugated carbonyl and carboxylic groups. It was discovered that pressed Oltu-stone has nearly identical properties to standard Oltu-stone and could be produced on a large scale commercially.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2023, 59, 5; art. no. 169730
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of Electrical Properties for Cantilever-Based Piezoelectric Energy Harvester
    Autorzy:
    Ali, Ahsan
    Pasha, Riffat Asim
    Sheeraz, Muhammad Abdullah
    Butt, Zubair
    Elahi, Hassan
    Khan, Afzaal Ahmed
    Powiązania:
    https://bibliotekanauki.pl/articles/102729.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    piezoelectric
    micro-electromechanical systems
    energy harvesting
    microsystems
    bimorph
    systemy mikroelektromechaniczne
    zbieranie energii
    mikrosystemy
    bimorf
    Opis:
    In the present era, the renewable sources of energy, e.g., piezoelectric materials are in great demand. They play a vital role in the field of micro-electromechanical systems, e.g., sensors and actuators. The cantilever-based piezoelectric energy harvesters are very popular because of their high performance and utilization. In this research-work, an energy harvester model based on a cantilever beam with bimorph PZT-5A, having a substrate layer of structural steel, was presented. The proposed energy scavenging system, designed in COMSOL Multiphysics, was applied to analyze the electrical output as a function of excitation frequencies, load resistances and accelerations. Analytical modeling was employed to measure the output voltage and power under pre-defined conditions of acceleration and load resistance. Experimentation was also performed to determine the relationship between independent and output parameters. Energy harvester is capable of producing the maximum power of 1.16 mW at a resonant frequency of 71 Hz under 1g acceleration, having load resistance of 12 kΩ. It was observed that acceleration and output power are directly proportional to each other. Moreover, the investigation conveys that the experimental results are in good agreement with the numerical results. The maximum error obtained between the experimental and numerical investigation was found to equal 4.3%.
    Źródło:
    Advances in Science and Technology. Research Journal; 2019, 13, 3; 76-85
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identifying selected diseases of leaves using deep learning and transfer learning models
    Autorzy:
    Mimi, Afsana
    Zohura, Sayeda Fatema Tuj
    Ibrahim, Muhammad
    Haque, Riddho Ridwanul
    Farrok, Omar
    Jabid, Taskeed
    Ali, Md Sawkat
    Powiązania:
    https://bibliotekanauki.pl/articles/2204260.pdf
    Data publikacji:
    2023
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Instytut Informatyki Technicznej
    Tematy:
    convolutional neural network
    transfer learning
    leaf disease detection
    image classification
    Opis:
    Leaf diseases may harm plants in different ways, often causing reduced productivity and, at times, lethal consequences. Detecting such diseases in a timely manner can help plant owners take effective remedial measures. Deficiencies of vital elements such as nitrogen, microbial infections and other similar disorders can often have visible effects, such as the yellowing of leaves in Catharanthus roseus (bright eyes) and scorched leaves in Fragaria ×ananassa (strawberry) plants. In this work, we explore approaches to use computer vision techniques to help plant owners identify such leaf disorders in their plants automatically and conveniently. This research designs three machine learning systems, namely a vanilla CNN model, a CNN-SVM hybrid model, and a MobileNetV2-based transfer learning model that detect yellowed and scorched leaves in Catharanthus roseus and strawberry plants, respectively, using images captured by mobile phones. In our experiments, the models yield a very promising accuracy on a dataset having around 4000 images. Of the three models, the transfer learning-based one demonstrates the highest accuracy (97.35% on test set) in our experiments. Furthermore, an Android application is developed that uses this model to allow end-users to conveniently monitor the condition of their plants in real time.
    Źródło:
    Machine Graphics & Vision; 2023, 32, 1; 55--71
    1230-0535
    2720-250X
    Pojawia się w:
    Machine Graphics & Vision
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Detection and enumeration of Enteric bacteria associated with food handlers and surfaces of food manufacturing industry located in Hub city, Pakistan
    Autorzy:
    Ali, Razim
    Hayat, Amir
    Fatima, Madiha
    Noman, Muhammad
    Powiązania:
    https://bibliotekanauki.pl/articles/1182928.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    enterobacteriaceae
    foodborne microbes
    hygiene
    surface contamination
    food handlers
    e. coli
    sanitation
    Opis:
    Foodborne microorganisms harbor and adheres itself to the food material and surrounding surfaces for a long time and influence the food quality and consumers health. Among these microbes the presence of Enteric indicator bacteria in food premises confers the indication of entero-pathogens, i.e. E. coli, Salmonella, Shigella and Campylobacters that could cause severe systemic infections in consumers. In this study, the hygienic status of confectionery and supplementary food processing facility was evaluated. A total of 10497 examinations were performed on 3499 swab samples collected from food premises and handlers for the analysis of Enteric indicator bacteria. From swabs, 1277 (12.2%) isolates were identified in which Enterobacteriaceae were found with higher frequency 604 (47.3%) followed by Coliforms 293 (30.8%) and Escherichia coli 280 (21.9%) respectively. The mean count (CFU/cm2) was found maximum for plain surfaces (floors, walls and door), while the lowest was for equipment and machinery. Overall isolates percent prevalence was determined where Enterobacteriaceae were 47%, Coliforms 31% and Escherichia coli 22%. Majority of the floor surfaces were highly contaminated, where washing and sanitation practices were observed to be inappropriate. Worker hygiene status was lacking essential food safety and hygiene standards. In general, the Enteric bacteria were found with higher ratio, that could affect the food quality and quantity both to a greater extent with some influences on consumers health.
    Źródło:
    World Scientific News; 2016, 49, 2; 192-203
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of steel fibres on fresh and hardened properties of cement concrete
    Autorzy:
    Ali, Saqib
    Kumar, Haresh
    Rizvi, Samar Hussain
    Raza, Muhammad Saleem
    Ansari, Jawaid Kamal
    Powiązania:
    https://bibliotekanauki.pl/articles/395745.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    cement concrete
    steel fibres
    compressive strength
    tensile strength
    workability
    beton cementowy
    włókna stalowe
    wytrzymałość na ściskanie
    wytrzymałość na rozciąganie
    urabialność
    Opis:
    Concrete possesses distinct features that make it widely acceptable for use across the globe; however, along with its obvious benefits, it has numerous drawbacks i.e., it is brittle in nature and its production causes an adverse impact on the environment. To counter such problems, researchers around the world have introduced sustainable measures. Fibre addition is foremost among these solutions in that it prevents crack propagation and increases the overall strength of concrete. In the present age, civil engineering structures have their own structural and durability requirements and so, modification in traditional concrete has become a necessity. This research is targeted at steel fibre reinforced concrete (SFRC), which is a superior quality concrete because of its enhanced strength. The steel fibres are obtained from binding wire that is used to tie the steel reinforcement. By referring to past research, steel fibres with an aspect ratio (length to diameter ratio) of 30 were considered favourable. The controlled, mixed design of the concrete was prepared with a targeted strength of 4000 psi and, while mixing the concrete ingredients, fibres were added to allow uniform dispersion. The fresh and hardened properties of workability, compressive, and tensile strength were tested and the results of fibres at 0%, 1%, 2% and 3% concrete mass were compared and analysed. The results indicated that highest compressive and tensile strength values were achieved with 3% fibre addition. However, with further addition, it was observed that concrete loses its workability. Therefore, it is suggested that 1% addition of steel fibres produces good strength with sufficient workability.
    Źródło:
    Civil and Environmental Engineering Reports; 2020, 30, 3; 186-199
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Review on Adsorption of Heavy Metals from Wood-Industrial Wastewater by Oil Palm Waste
    Autorzy:
    Ayob, Syafiqa
    Othman, Norzila
    Altowayti, Wahid Ali Hamood
    Khalid, Faisal Sheikh
    Bakar, Norshila Abu
    Tahir, Muhammad
    Soedjono, Eddy Setiadi
    Powiązania:
    https://bibliotekanauki.pl/articles/1839174.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    industrial wastewater
    heavy metal
    adsorption
    activated carbon
    oil palm waste
    Opis:
    The use of heavy metals in the manufacturing industry over the past few decades has eventually contributed to a rise in the flow of metallic compounds into wastewater and has raised significant ecological and health threats to living things. Adsorption is an excellent way to treat solid waste effluent, offering significant benefits such as affordability, profitability, ease of operation and efficiency. However, the price of commercial adsorbent namely activated carbon has soared due to its high demand. There is also a green improvement in this method by turning the commercial adsorbent into agricultural waste. In Malaysia, the oil palm waste is such suitable material that can be utilized for making activated carbon, since they are ample and easy to find. Additionally, part of them is agricultural waste that cannot be consumed (i.e. leaves and fronds). Hence, this study aimed to analyse the potential of activated carbon from agricultural waste, namely oil palm waste, in reducing the levels of heavy metals in industrial wastewater.
    Źródło:
    Journal of Ecological Engineering; 2021, 22, 3; 249-265
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of safety climate on job performance and job satisfaction with moderating role of psychological capital
    Autorzy:
    Kiyani, Amir Saif Ali
    Rizvi, Tahir Hussain
    Khan, Muhammad Saqib
    Powiązania:
    https://bibliotekanauki.pl/articles/1375509.pdf
    Data publikacji:
    2019
    Wydawca:
    Międzynarodowy Instytut Innowacji Nauka – Edukacja – Rozwój w Warszawie
    Tematy:
    Safety climate
    Job Satisfaction
    Job Performance
    psychological Capital
    Conserva-tion of Resource Theory
    Public Sector Organization Rawalpindi and Islamabad
    Opis:
    The current research investigated the effect of safety climate on job satisfaction and job performance with psychological capital as a moderator between safety climate and job satisfaction as well as job performance. This research fills the gap by collecting empirical evidence from the emerging organizations of Pakistan. Conservation of resource theory (COR) is relevant to the research area. Data were collected from 300 employees from different Organizations. The current study is empirical and quantitative-based study is used to conducted research. Data were collected by convenient non-probability sampling techniques to be used and collected from employees working in the reputed organization; Chemical, Cement, Petroleum, Oil and Gas industry of Islamabad and Rawalpindi. Confirmatory Factor analysis was done through AMOS and hypotheses were tested through SPSS regression analysis process of Hayes model. To test the moderation effects, the process of Hayes model 1 was also performed. Safety climate has a positive relationship with the two DVs which are job performance and job satisfaction. Moreover, Psychological Capital played a significant moderating role between safety climate and job satisfaction as well as job performance. When Psychological capital was high, the relationship between safety climate and job performance as well as the relationship between safety climate and job satisfaction were stronger. These results are important for future studies. This research recommended top management and responsible authorities to promote safety climate activates between their organization in order to enhance their employees satisfy and high performed. Moreover, this research strongly recommends psychological capital amongst organization looking for highly satisfied and effective employees. Further implications for practice were discussed in detail.
    Źródło:
    International Journal of New Economics and Social Sciences; 2019, 9(1); 363-379
    2450-2146
    2451-1064
    Pojawia się w:
    International Journal of New Economics and Social Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zinc and graphene oxide composites as new protective coatings for oil and gas pipes
    Kompozyty cynku i tlenku grafenu jako nowe powłoki ochronne rur do przesyłu nafty i gazu
    Autorzy:
    Asghar, M. Sajid Ali
    Amir, Muhammad
    Hussain, Umer
    Sabri, Mohammed M.
    Powiązania:
    https://bibliotekanauki.pl/articles/24202808.pdf
    Data publikacji:
    2023
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
    Tematy:
    corrosion resistance
    graphene oxide
    Hummers method
    nanocomposites
    electrophoretic deposition
    odporność na korozję
    tlenek grafenu
    metoda Hummersa
    nanokompozyty
    osadzanie elektroforetyczne
    Opis:
    A method was developed to obtain a durable coating consisting of zinc and graphene oxide (Zn-GO) in order to reduce the mechanical wear and tear rate of oil and gas pipelines made of steel. Graphene oxide was obtained from graphite by wet chemical oxidation (unmodified and modified Hummers’ method) using potassium permanganate and sulfuric acid. The process was carried out at various temperatures. The steel was covered with an ultrathin layer of Zn-GO using the electrophoretic deposition method. The GO particle size (< 90 nm) was confirmed by XRD and laser analysis. For GO particles obtained by the modified Hummers’ method, a significant correlation was observed in the scratch (R2 = 0.87) and the Vickers microhardness tests (R2 = 0.93), which indicates a lower wear rate of Zn-GO-coated steel.
    Opracowano metodę otrzymywania trwałej powłoki składającej się z cynku i tlenku grafenu (Zn-GO) w celu zmniejszenia zużycia mechanicznego rurociągów naftowo-gazowych wykonanych ze stali. Tlenek grafenu pozyskano z grafitu metodą mokrego utleniania chemicznego (niezmodyfikowana i zmodyfikowana metoda Hummersa) z użyciem nadmanganianu potasu i kwasu siarkowego. Proces prowadzono w różnej temperaturze. Stal powlekano ultra cienką warstwą Zn-GO techniką osadzania elektroforetycznego. Metodą XRD i analizą laserową potwierdzono wielkość cząstek GO (≤ 90 nm). Dla cząstek GO otrzymanych zmodyfikowaną metoda Hummersa zaobserwowano znaczącą korelację w teście zarysowania (R2 = 0.87) i mikrotwardości Vickersa (R2 = 0.93), co świadczy o mniejszym stopniu zużycia stali pokrytej powłoką Zn-GO.
    Źródło:
    Polimery; 2023, 68, 7-8; 378--385
    0032-2725
    Pojawia się w:
    Polimery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluating the Total Phenolic, Protein Contents, Antioxidant and Pharmacological Effects of Cynodon dactylon Extracts Against Escherichia coli and Staphylococcus aureus
    Autorzy:
    Ibrahim, Muhammad
    Riaz, Moazama
    Ali, Akbar
    Shaheen, Musarat
    ur Rahman, Shafiq
    Aziz, Riffat
    Alamri, Abdulhakeem S.
    Alhomrani, Majid
    Dablool, Anas S.
    Alghamdi, Saad
    Sameeh, Manal Y.
    Tashkandi, Manal A.
    Powiązania:
    https://bibliotekanauki.pl/articles/27315658.pdf
    Data publikacji:
    2023
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    Cynodon dactylon
    Anti-microbial
    Flavonoids
    Total Soluble Proteins
    Peroxidase
    Antioxidant
    Super oxide Dismutase
    Opis:
    The study was aimed to characterize the antioxidant and anti-microbial activities of Cynodon dactylon with special reference on its precise biochemical analysis. Physiological analysis that total carotenoids content (0.3884 ± 0.0172 mg/g), total chlorophyll content (6.1460 ± 0.2915 mg/g), total phenolic contents (13.4703 ± 0.1494 mg/g), chlorophyll a (3.7708 ± 0.1528 mg/g, catalase (CAT) contents (40.2844 ± 0.1515 units/ mg), total anthocyanin contents (5.0166 ± 0.2966 g–1 FW) total soluble proteins (2.9916 ± 0.1734 mg/g) and total flavonoids content (TFC) (4.7863 ± 0.0442 μg/g) was found higher in the leaves of the Cynodon dactylon whereas, chlorophyll b (2.4881 ± 0.1326 mg/g) was found higher in the stem of Cynodon dactylon, while, peroxidase (POD) contents (81.8763 ± 4.6609 units/mg) and superoxidase dismutase (SOD) activity (80.4346 ± 5.9367 units/mg) was investigated higher in roots of Cynodon dactylon. The anti-microbial activity of Cynodon dactylon extracts was performed using a good diffusion technique against two microbial strains. Among all the plant extracts, the methanolic extracts showed a maximum inhibition zone (26.87 mm) against anti-bacterial strain Escherichia coli whereas n-hexane extract showed a maximum inhibition zone (17.88 mm) against anti-fungal strain Candida albicans. This study reported the antimicrobial activity of Cynodon dactylon against some common pathogens such as Staphylococcus aureus, Escherichia coli, and Candida albicans, which are highly associated with nosocomial infection. From the given results it is concluded that Cynodon dactylon could be exploited in pharmacology due to its antioxidant and anti-microbial properties.
    Źródło:
    Polish Journal of Chemical Technology; 2023, 25, 3; 110--119
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative Analysis of the Performances of Six Taguchi-Based Multi-Response Optimisation Techniques for Product Development in Textiles
    Charakterystyka preparatów kolagenowych pochodzących z odpadów skórzanych metodą wysokosprawnej chromatografii cieczowej
    Autorzy:
    Ahmad, Naseer
    Kamal, Shahid
    Raza, Zulfiqar Ali
    Zeshan, Muhammad
    Abid, Sharjeel
    Javed, Zafar
    Karahan, Mehmet
    Powiązania:
    https://bibliotekanauki.pl/articles/2056321.pdf
    Data publikacji:
    2021
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
    Tematy:
    fuzzy logic
    grey relational analysis
    optimisation
    Taguchi method
    textile
    logika rozmyta
    szara analiza relacyjna
    optymalizacja
    metoda Taguchi
    tekstylia
    Opis:
    Researchers are using different statistical techniques for process optimisation and product development both in academia and industries. Similarly, several statistical tools are being employed in the textile industry for process optimisation during the manufacturing of different products. The purpose of this study was to analyse different Taguchi-based techniques in the multi-response optimisation of selected industrial processes and then to generalise the outcomes. Herein, six different Taguchi-based multi-response optimisation techniques, including grey relational analysis (GRA), the weighted signal-to-noise (WSN) ratio, principal component analysis, VIKOR (VlseKriterijumska Optimizacija I Kompromisno Resenje), the multiple response signal-to-noise ratio, and Fuzzy logic were compared against three data sets of industrial processes. The researchers herein optimised cotton dyeing, the finishing of textile to make them oleo-hydrophobic, and the production of rhamnolipids (bio-surfactants). The results demonstrated that the Fuzzy logic-based Taguchi method gave the best optimisation amongst all the other approaches, followed by GRA and WSN for all the selected processes. The said statistical techniques were applied to specific textile and biotechnological processes. The outcomes of this study can help researchers in practical implementation in industrial sectors. In this study, a comparative analysis of the performances of six Taguchi-based multi-response optimisation techniques was conducted for potential industrial processes, particularly textile processing.
    Niegarbowane odpady skórzane pochodzące z przemysłu garbarskiego są potencjalnym zagrożeniem dla środowiska naturalnego. Z drugiej jednak strony tego rodzaju odpady zawierają znaczące ilości cennego białka – kolagenu. Białko kolagenowe jest biopolimerem, który z uwagi na swoje właściwości znajduje zastosowanie w przemyśle spożywczym, kosmetycznym oraz w przemyśle biomedycznym. Obecnie na rynku dostępne są preparaty kolagenowe pozyskane z odpadów pochodzenia zwierzęcego. W pracy przedstawiono procedurę oznaczania aminokwasów w wybranych preparatach kolagenowych metodą wysokosprawnej chromatografii cieczowej i metodą spektrofotometryczną. We wszystkich próbkach oznaczono wysokie stężenia glicyny, alaniny, proliny i hydroksyproliny, a niewielkie ilości tyrozyny, seryny, waliny i izoleucyny. Zastosowana metoda chromatograficzna umożliwia szybkie i równoczesne oznaczenie 17 aminokwasów w badanych próbach. Opracowane w ramach pracy metody analityczne mogą być wykorzystane m.in. do szybkiej kontroli składu aminokwasowego kolagenu.
    Źródło:
    Fibres & Textiles in Eastern Europe; 2021, 5 (149); 100--108
    1230-3666
    2300-7354
    Pojawia się w:
    Fibres & Textiles in Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seat-belt use and associated factors among drivers and front passengers in the metropolitan city of Peshawar, Pakistan: A cross sectional study
    Korzystanie z pasów bezpieczeństwa i czynniki powiązane wśród kierowców i pasażerów na przednim fotelu w metropolii Peszawar, Pakistan: Badanie przekrojowe
    Autorzy:
    Khaliq, Abdul
    Khan, Muhammad Naseem
    Ahmad, Fayaz
    Khattak, Farhad Ali
    Ullah, Irfan
    Akram, Mohammad
    Arif, Nauman
    Haq, Zia Ul
    Powiązania:
    https://bibliotekanauki.pl/articles/1033278.pdf
    Data publikacji:
    2020
    Wydawca:
    Towarzystwo Pomocy Doraźnej
    Tematy:
    Seat-belt use
    drivers
    front passengers
    morbidity
    mortality
    road traffic accidents
    Opis:
    INTRODUCTION: Road traffic accidents is a major public health problem with an estimate to become the ninth leading cause of death worldwide. Pakistan yearly spends around 100 billion rupees on injuries and ranks 5th due to the fatality associated with road traffic accidents. Seat-belt use decreases the fatality amongst drivers and front-seat passengers by around 45–50%. Therefore, the current study was aimed to determine seat belt use among drivers and front passengers and its association of demographic factors. MATERIAL AND METHODS: A cross-sectional study was carried out from October 2016 to March 2017. The city was categorized into five major geographical areas and from each of these areas two roads were randomly selected from the list of the available roads. Data collection was done in the petrol pumps located on these roads and every fifth vehicle interviewed. Data was collected on an adapted tool with information regarding use of seat-belt and socio-demographic factors. Data was analyzed, using STATA version 13.1. RESULTS: A total of 1690 vehicles were interviewed during the time period. Around one third (35.5%) of the drivers were using seat-belt when approached and none of the front passengers. Around three fourth (72.2%) of the drivers reported avoiding fines and penalties as the main reason for using seat-belts. The main reason reported for not wearing seat-belt was embarrassment and was reported by around half of the drivers (45.6%) and front passenger (42.8%). On logistic regression education, type of vehicle and years of experience were independently associated with seat-belt use. Driving experience and education were negatively associated with seat-belt use while the use was less in private cars compared to taxis. CONCLUSIONS: Seat belt use in drivers of the metropolitan city of Peshawar was quite low and ironically was none in the front passengers. Avoiding fines and penalties was the main reason for seat-belt use which was common in taxis. Policy makers and planners should impose regulations and implementation of seat-belt use by all passengers to reduce the morbidity and mortality following road traffic accidents.
    WSTĘP: Wypadki drogowe to poważny problem zdrowia publicznego, który według szacunków może stać się dziewiątą główną przyczyną zgonów na świecie. Pakistan rocznie wydaje około 100 miliardów rupii na leczenie obrażeń i zajmuje piąte miejsce z powodu śmiertelnych wypadków drogowych. Korzystanie z pasów bezpieczeństwa zmniejsza śmiertelność wśród kierowców i pasażerów siedzących z przodu o około 45–50%. Dlatego obecne badanie miało na celu określenie użycia pasów bezpieczeństwa wśród kierowców i pasażerów na przednim fotelu oraz powiązanie czynników demograficznych. MATERIAŁ I METODY: Badanie przekrojowe przeprowadzono od października 2016 r. do marca 2017 r. Miasto zostało podzielone na pięć głównych obszarów geograficznych i z każdego z tych obszarów losowo wybrano dwie drogi z listy dostępnych dróg. Zbieranie danych odbywało się w stacjach paliwowych znajdujących się przy tych drogach i przeprowadzaono wywiad w co piątym pojeździe. Dane zebrano na dostosowanym narzędziu z informacjami dotyczącymi stosowania pasów bezpieczeństwa i czynników społeczno-demograficznych. Dane zostały przeanalizowane przy użyciu STATA w wersji 13.1. WYNIKI: W czasie badania przeprowadzono wywiad z 1690 użytkownikami pojazdów. Około jedna trzecia (35,5%) kierowców korzystała z pasów bezpieczeństwa, ale żaden z pasażerów na przednim fotelu. Około trzy czwarte (72,2%) kierowców wskazało na unikanie kar jako główny powód używania pasów bezpieczeństwa. Głównym powodem, dla którego zgłaszano brak zapinania pasów bezpieczeństwa, było zażenowanie i zgłosiło je około połowa kierowców (45,6%) i pasażerowie z przodu (42,8%). W edukacji regresji logistycznej rodzaj pojazdu i lata doświadczenia były niezależnie związane z używaniem pasów bezpieczeństwa. Doświadczenie w prowadzeniu pojazdu i edukacja były negatywnie związane z używaniem pasów bezpieczeństwa, podczas gdy korzystanie z nich było mniejsze w samochodach prywatnych w porównaniu do taksówek. WNIOSKI: Używanie pasów bezpieczeństwa przez kierowców metropolii Peszawar było dość niskie i, jak na ironię, żaden z pasażerów nie korzystał z pasów. Unikanie grzywien i kar było głównym powodem używania pasów bezpieczeństwa, który był powszechny w taksówkach. Decydenci i planiści powinni narzucić przepisy i wdrażać stosowanie pasów bezpieczeństwa przez wszystkich pasażerów, aby zmniejszyć zachorowalność i śmiertelność w wyniku wypadków drogowych.
    Źródło:
    Critical Care Innovations; 2020, 3, 2; 1-15
    2545-2533
    Pojawia się w:
    Critical Care Innovations
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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