14 research outputs found
Pioneers of Library Movement in Pakistan
No full textThe paper aims to describe in brief the contribution of seven leaders of Pakistan librarianship, viz. K.B. Khalifa M. Asadullah, Prof. Dr. Abdul Moid, Dr. Abdus Subuh Qasimi, Muhammad Shafi, Fazal Elahi, Khawaja Nur Elahi and S. V. Hussain. The early library developments are given for better understanding of the role of these leaders
Failure analysis of pulverizer pipe elbow in PLTU boiler
No full textoai:ojs2.journal-iasssf.com:article/44Erosion occurs due to several different mechanisms, depending on the composition, size, shape of the eroding particles, speed, angle of impact, and surface composition of the eroded components. The pulverizer pipe elbow has become worn out due to the pulverized coal fluid abrasion flowing on the pipe, which the type is AISI Grade 1026. This study was carried out on the causes of this damage case. Damage to the elbow in the boiler needs to be analyzed for the failure of the elbow so that the damage's cause is known and it becomes a lesson so that the same damage does not occur again. The research aims to: 1. Find out the cause of damage to the pulverizer elbow on the boiler; 2. Know the correct maintenance strategy to increase the reliability of pulverizer pipes in boilers; 3. Simulate erosion due to coal particles in the pulverizer pipe using the Autodesk Simulation Computational Fluid Dynamics software program; 4. Analytical calculations of the erosion rate that occurs at the bend of the pulverizer pipe (elbow) in the boiler. The analysis was done by visual observation, hardness testing, metallographic observation, simulation of the ANSYS CFD program, and analytical calculation. The result of the ANSYS simulation showed that the main factor causing the leakage was erosion-corrosion. In the leaking area, the corrosion concentration was higher than in other areas, indicated by the red color in that area. From the calculation results, it was concluded that the largest erosion rate occurs at the angle of 200 with the value is 4.9548 x 10- 11 m3 / s, the smaller the pulverized coal’s angle of impact crashed the pulverizer pipe elbow, the greater the erosion
Failure analysis of pulverizer pipe elbow in PLTU boiler
No full textErosion occurs due to several different mechanisms, depending on the composition, size, shape of the eroding particles, speed, angle of impact, and surface composition of the eroded components. The pulverizer pipe elbow has become worn out due to the pulverized coal fluid abrasion flowing on the pipe, which the type is AISI Grade 1026. This study was carried out on the causes of this damage case. Damage to the elbow in the boiler needs to be analyzed for the failure of the elbow so that the damage's cause is known and it becomes a lesson so that the same damage does not occur again. The research aims to: 1. Find out the cause of damage to the pulverizer elbow on the boiler; 2. Know the correct maintenance strategy to increase the reliability of pulverizer pipes in boilers; 3. Simulate erosion due to coal particles in the pulverizer pipe using the Autodesk Simulation Computational Fluid Dynamics software program; 4. Analytical calculations of the erosion rate that occurs at the bend of the pulverizer pipe (elbow) in the boiler. The analysis was done by visual observation, hardness testing, metallographic observation, simulation of the ANSYS CFD program, and analytical calculation. The result of the ANSYS simulation showed that the main factor causing the leakage was erosion-corrosion. In the leaking area, the corrosion concentration was higher than in other areas, indicated by the red color in that area. From the calculation results, it was concluded that the largest erosion rate occurs at the angle of 200 with the value is 4.9548 x 10- 11 m3 / s, the smaller the pulverized coal’s angle of impact crashed the pulverizer pipe elbow, the greater the erosion
Collected Papers (on Physics, Artificial Intelligence, Health Issues, Decision Making, Economics, Statistics), Volume XI
No full textThis eleventh volume of Collected Papers includes 90 papers comprising 988 pages on Physics, Artificial Intelligence, Health Issues, Decision Making, Economics, Statistics, written between 2001-2022 by the author alone or in collaboration with the following 84 co-authors (alphabetically ordered) from 19 countries: Abhijit Saha, Abu Sufian, Jack Allen, Shahbaz Ali, Ali Safaa Sadiq, Aliya Fahmi, Atiqa Fakhar, Atiqa Firdous, Sukanto Bhattacharya, Robert N. Boyd, Victor Chang, Victor Christianto, V. Christy, Dao The Son, Debjit Dutta, Azeddine Elhassouny, Fazal Ghani, Fazli Amin, Anirudha Ghosha, Nasruddin Hassan, Hoang Viet Long, Jhulaneswar Baidya, Jin Kim, Jun Ye, Darjan Karabašević, Vasilios N. Katsikis, Ieva Meidutė-Kavaliauskienė, F. Kaymarm, Nour Eldeen M. Khalifa, Madad Khan, Qaisar Khan, M. Khoshnevisan, Kifayat Ullah,, Volodymyr Krasnoholovets, Mukesh Kumar, Le Hoang Son, Luong Thi Hong Lan, Tahir Mahmood, Mahmoud Ismail, Mohamed Abdel-Basset, Siti Nurul Fitriah Mohamad, Mohamed Loey, Mai Mohamed, K. Mohana, Kalyan Mondal, Muhammad Gulfam, Muhammad Khalid Mahmood, Muhammad Jamil, Muhammad Yaqub Khan, Muhammad Riaz, Nguyen Dinh Hoa, Cu Nguyen Giap, Nguyen Tho Thong, Peide Liu, Pham Huy Thong, Gabrijela Popović, Surapati Pramanik, Dmitri Rabounski, Roslan Hasni, Rumi Roy, Tapan Kumar Roy, Said Broumi, Saleem Abdullah, Muzafer Saračević, Ganeshsree Selvachandran, Shariful Alam, Shyamal Dalapati, Housila P. Singh, R. Singh, Rajesh Singh, Predrag S. Stanimirović, Kasan Susilo, Dragiša Stanujkić, Alexandra Şandru, Ovidiu Ilie Şandru, Zenonas Turskis, Yunita Umniyati, Alptekin Ulutaș, Maikel Yelandi Leyva Vázquez, Binyamin Yusoff, Edmundas Kazimieras Zavadskas, Zhao Loon Wang.
Correction to: Geochemical Analysis of Cretaceous Shales from the Hazara Basin, Pakistan: Provenance Signatures and Paleo-Weathering Conditions, (J. Mar. Sci. Eng, (2022), 10, (800), 10.3390/jmse10060800)
No full textAddition of an Author In the original publication [1], there was a mistake in the authorship. Muhammad Umar should be added as the co-author. His affiliation is the Department of Earth Sciences, The University of Haripur, Haripur 22620, Pakistan. New Author Contributions Statement Conceptualization, A.G.F. and M.U.; methodology, A.G.F.; software, A.G.F. and H.T.J.; validation, A.G.F., M.U. and H.T.J.; formal analysis, A.G.F., M.U. and H.T.J.; investigation, A.G.F., M.U. and H.T.J.; resources, A.G.F. and M.U.; data curation, A.G.F. and M.U.; writing—original draft preparation, A.G.F. and M.U.; writing—review and editing, H.T.J., F.S., M.A.F.M., G.K. and A.K.J.; visualization, M.U., H.T.J., F.S. and M.A.F.M.; supervision, M.U.; project administration, M.U.; funding acquisition, G.K. and H.T.J. All authors have read and agreed to the published version of the manuscript. © 2022 by the authors. Licensee MDPI, Basel, Switzerland
Human Following Robot Berbasis IoT untuk Otomatisasi Troli: Meningkatkan Pembelajaran dalam Mata Kuliah Airport Automation
No full textPengelolaan troli bandara menghadirkan tantangan seperti pencurian, kerusakan, perawatan, kebersihan, dan keterbatasan mobilitas bagi pengguna. Troli Pengikut Manusia menawarkan solusi otonom untuk transportasi barang penumpang. Dengan menggunakan model R&D Borg & Gall, troli ini beroperasi melalui gerakan tangan yang terdeteksi oleh sarung tangan dengan sensor gyroscope. Mikrokontroler ESP-32 mengaktifkan troli melalui internet, sementara Arduino Mega memproses data untuk mengontrol gerakan melalui motor DC. Troli ini dapat bergerak ke berbagai arah, mendukung beban hingga 7,9 kg, dengan jangkauan deteksi 20 cm dan jangkauan respons hingga 30 meter. Proyek ini terintegrasi ke dalam kurikulum Otomasi Bandara program Teknologi Rekayasa Bandar Udara (TRBU), yang memperkaya pembelajaran dalam bidang otomasi bandara, IoT, dan robotika. Pengembangan dilakukan dengan mengikuti 8 dari 10 tahap Borg & Gall, yang meningkatkan pembelajaran secara sistematis. Hasil pengujian menunjukkan bahwa troli ini mampu mempertahankan stabilitas dengan menyesuaikan sudut kemiringan terhadap kecepatan: inklinasi pitch naik 5° untuk setiap peningkatan 0,8–1,0 m/s, mencapai 90° pada kecepatan 15,0 m/s, sementara roll meningkat 2,5° per 0,8–1,0 m/s, mencapai 45°. Troli ini telah diverifikasi di Bandara Sultan Mahmud Badarrudin II, memberikan pelatihan yang berharga bagi para taruna di Politeknik Penerbangan Palembang
Introducing B-Sweep: An Innovative Bird-Repelling Device Powered by Solar Cells and Sound Waves, Efficiently Protecting Against Bird Strikes in Airport Airsides
No full textThe study aims to create a bird-repelling device called Bird-repelling with solar cell and sound wave energy efficient protection (B-SWEEP) to reduce the likelihood of bird strikes. The study employs a Research and Development (R&D) methodology, whereby data is gathered through a site survey to identify bird-highlighted places, including documentation of the quantity and variety of birds observed during a specific timeframe at the Politeknik Penerbangan Palembang—analysis conducted by measuring the range and power consumption effectiveness. The findings indicate that B-SWEEP generated sound waves at a distance of 100 meters with a maximum frequency of 500 Hz. The B-SWEEP test field is used six times, with a five-meter buffer between each experiment and the user. The purpose is to evaluate how well B-SWEEP can receive Wi-Fi. This test enables us to determine the distance at which B-SWEEP began to perform poorly when the user gave commands, and it helps improve B-SWEEP even further as a result of this research. It demonstrates how B-SWEEP deters birds in a field. Using solar panels for charging, B-SWEEP can function without electricity for one hour. Using an ESP32-CAM microcontroller to implement Internet of Things (IoT) technologies. Airport managers can recognize the kinds of birds that fly into the airside area with the help of this micro camera, including sparrows that are immediately linked to a telephone. Due to its sound and wave, the sweep audio signal might deter birds from nesting and visiting the airport airside. Integrating IoT-based automation technologies with renewable energy sources can facilitate the execution of the eco-airport initiative. Based on testing results and feedback from 51 respondents, improvements to B-SWEEP include enhancing usability by simplifying interface complexity and adjusting visual elements for greater appeal. Furthermore, expanding its capabilities to repel a wider range of animals through tailored ultrasonic technology would enhance its effectiveness and user satisfaction, making B-SWEEP a more versatile solution
Green HRM and Resource Optimization in the Public Sector: A Pathway to Achieving Sustainable Environmental Policy Goals
No full textThe study discusses the role of Green Human Resource Management in optimizing resources and achieving environmental policy goals within public sector organizations. In view of increasing pressure to use more sustainable practices, Green HRM emerged as a core determinant in enhancing environmental performance and efficiency in operations. The study examines three influential Green HRM practices, that is, green recruitment, green training, and environmental performance management, in light of assessing the impact of their influence on the consumption of resources, energy, and waste management. A quantitative study was performed by the author based on a survey with the sample size consisting of 200 respondents from 25 public sector organizations. There also seems to be a strong positive relationship found between Green HRM practice and the optimization of resources in particular-through green recruitment and particularly green training. Furthermore, the study indicated that resource optimization served as a mediator between realizing sustainable environmental policy goals and Green HRM. Thus, effective Green HRM practices help an organization decrease its environmental footprint while at the same time improving its operations' efficiency. The study demonstrates that public sector organizations should also use the strategic frameworks designed to set up sustainable long-run sustainability goals with Green HRM practices. This way, research supports literature on Green HRM with its importance and in avenues for potential future research directions towards integrating the practice into the public sector
Author Correction: Advanced deep learning techniques for early disease prediction in cauliflower plants
No full textA discussion on maize transformation during the last two decades (2002–2022): An update on present trends and future prospects
No full textOver the past decades, improvements in plant biotechnology have been used to produce genetically modified maize cultivars that have the potential to tolerate various stresses and as a result maize production has increased in the world. GM maize varieties having various traits i.e. disease resistance and abiotic stress tolerance denote 30% of the world’s maize cultivated area. Genetic transformation in maize has been successfully achieved for the development of trait specific genotypes. Traditionally, some barriers in maize tolerance to certain traits still exist that can never be accomplished and to fill this gap, maize biotechnology has developed and commercialized GM maize varieties as an alternative to conventional breeding methods. Though various stresses i.e. biotic and abiotic can affect maize production but among other abiotic stresses, drought is a major issue that directly disrupts maize yield and productivity across the globe. Drought tolerant gene isolation and their transformation into maize are the key steps towards technological improvements. Agrobacterium mediated gene transformation in maize is widely used for the stable integration and transient expression pattern through optimized tissue culture protocols. This review mainly represents updated success in gene transformation in maize in the last two decades in terms of achievements, their uses and future prospects of GM maize cultivars. © 2023 The Author(s
