223 research outputs found
Probing the potential of Al2CO/SiC heterostructures for visible light-driven photocatalytic water splitting using first-principles strategies
No full textPhotocatalytic water splitting is a sustainable and eco-friendly method for renewable energy production. The development of an efficient photocatalyst based on two-dimensional (2D) heterostructures with suitable band offsets is at the heart of relevant research activities. In this work, we predict a novel 2D heterostructure of Al2CO and SiC based on first-principles calculations of the structural, electronic, optical, interfacial, and photocatalytic mechanisms. The results indicate that AB stacking of the interface is energetically more favorable with a direct band gap of 2.27 eV. The interface exhibits strong covalent interaction, straddling-type band alignment, and suitable redox potentials for water splitting. Owing to their exceptional stability, the findings based on the work function revealed an efficient charge transfer mechanism due to the internal electric field. Furthermore, the optical properties of the structure indicate strong light harvesting ability in visible and ultraviolet regions. The findings suggest that the proposed heterostructure offer suitable band edge positions for hydrogen and oxygen evolution reactions. The mechanisms of water splitting, hydrogen and oxygen production are examined to explore the prospects of overall water splitting. Three fundamental steps—Volmer, Heyrovsky, and Tafel—are investigated to study the hydrogen evolution reaction (HER) activity. The screening of whole reaction pathways for oxygen production exhibited low theoretical overpotential and enhanced catalytic efficiency. This study demonstrates that the Al2CO/SiC heterostructure is a promising material for overall water splitting in various pH ranges under visible light irradiation
سجاد ظہیر کے ناولٹ ”لندن کی ایک رات“ کا ما بعد نو آبادیاتی جائزہ: A POST-COLONIAL REVIEW OF SAJJAD ZAHEER'S NOVELETTE "LONDON KI EK RAAT"
No full text“London ki Ek Raat”is a famous novel by Sajjad Zaheer. In this novel, he has thoroughly reviewed the poor patriotism of the people of India. In this novel, the elements of post-colonialism have been reviewed. Creation relates differently to a creator. I think it is not fair to deny the author. The characters contribute according to the author's intention and move the story till the end. The feelings and emotions of the audience and viewers come out as the feelings and emotions of the characters and the pain and difficulty of the character becomes the difficulty of the reader and he feels sympathy for him. Even in "London Ki Ek Raat" where five, six stories are going on simultaneously. The purpose of Sajjad Zaheer himself to write this novelette is a different story, as every writer has a specific mindset. In the same way, those goals also enter into the creation even if the creator does not want it, and their reflections can be mixed up. Sajjad Zaheer has also given the most suitable role to the characters in the background and foreground of the world and the subcontinent in "London Ki Ek Raat
Author highlights social media’s dominant role in today’s world at book launch
No full textThis article covers the launching of Dr Aasim Sajjad Akhtar’s book ‘The Struggle for Hegemony in Pakistan: Fear, Desire and Revolutionary Horizons’ at IBA City camus. IBA Executive Director Dr S Akbar Zaidi, visiting faculty at IBA Abira Ashfaq, and lawyer Faisal Siddiqui, and the author all talked at the book launching panel discussion
Supplementary material 3 from: Rais M, Ahmed J, Naveed A, Batool A, Shahzad A, Bibi R, Sajjad A (2021) Field surveys along habitat gradients revealed differences in herpetofauna assemblage in Margalla Hills National Park, Islamabad, Pakistan. Biodiversity Data Journal 9: e61541. https://doi.org/10.3897/BDJ.9.e61541
No full textSpecies lis
Correction to: Cross-influence of Information and Risk Effects on the IPO Market: Exploring Risk Disclosure with a Machine Learning Approach (Annals of Operations Research, (2022), 10.1007/S10479-022-05012-8)
No full textAuthors affiliations were mistakenly indicated as Huosong Xia1,2, Juan Weng1 , Sabri Boubaker3, Zuopeng Zhang4,6, Sajjad M. Jasimuddin5,7 and needs to be correctly read as: Huosong Xia1,2, JuanWeng1, Sabri Boubaker3,4,5, Zuopeng Zhang6, SajjadM. Jasimuddin7 Original article has been corrected. \textcopyright The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022
Measurement of Social Factors Affecting Self-Declaration Health (Case study, 6 and 16 districts of Tehran): Social Factors Affecting Self-Declaration Health
No full textBackground and Aim: Health has other dimensions in addition to its physical dimension. Health is a result of socio-economic and cultural life conditions and qualities and has close relation with economic stability, environment, neighborhood situation, health care, social, cultural context, education level, and knowledge. In this study, we examined the possible effect of social factors on diverse health levels. The aim is to investigate the relationship between health and independent variables such as lifestyle, health literacy, and socio-economic status.
Methods: Data was gathered with a survey method and 256 sample sizes of 3 and 16 municipal districts of Tehran using structured and semi-structured questionnaires. Validity was examined by content validity, and reliability was examined by Cronbach’s alpha. Data were analyzed with SPSS software.
Ethical Considerations: In this study, verbal informed consent of participants was obtained followed by an explanation about the purpose of the study, anonymity, and confidentiality of patients' information.
Results: Results indicate that the general condition of health has a significant relation with all independent variables (lifestyle, health literacy, and socioeconomic status). In examining the relation of two-dimension of physical and mental health with independent variables; physical health has a significant relation with gender, healthy lifestyle, health literacy, social support, and socioeconomic status; and mental health has a significant relationship with a healthy lifestyle, health literacy, social capital.
Conclusion: Analysis of stepwise regression shows that independent variables explain 9 percent of health variation so that health literacy has more effect and with adding demographical variables increases to 17 percent.
Corresponding Author: Sajjad Yahak; Email: [email protected]; ORCID: https://orcid.org/0000-0003-0037-7935
Please cite this article as: Abbasi M, Yahak S, Keshavarz dizjini S. Measurement of Social Factors Affecting Self-Declaration Health (Case study, 6 and 16 districts of Tehran). Bioeth Health Law J. 2022; 2(1): 1-10 (e4). http://doi.org/10.22037/bhl.v2i1.3895
Analytical representation and finite element analysis of magnetically-geared permanent magnet machines
No full textThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2019Cataloged from student-submitted PDF version of thesis.Includes bibliographical references (pages 205-209).Recently, magnetic gears have drawn significant interest as a promising alternative to their mechanical counterparts by introducing features such as generating high torque at low speed, reduced acoustic noise and vibrations, low maintenance, inherent overload protection, improved reliability, physical isolation between shafts, and contactless power transfer. Conventional electrical machines can be combined with magnetic gears to form a compact device called a magnetically-geared machine. They have found their way into mechatronics, wind turbines, wave energy generation and electric vehicles. Such devices can be studied by numerical techniques or analytical frameworks. The former such as finite element methods (FEM), although powerful, is expensive and time-consuming, while the latter approach like flux-tube based models provide a flexible yet reasonable solution for preliminary designs and optimizations.In this thesis, there has been a comprehensive study on flux-tube based modeling and finite element analysis of the machine. The stator is represented using flux-tube based carterâĂŹs coefficient and a surface current density. The permanent magnets are modeled by different approaches including magnetization density, Coulombian fictitious charges and Amperian currents. The air-gap permeances are also modeled by flux-tubes. Closed-form expressions for the magnetic fields has been extracted. The developed torques has been calculated by different techniques including Maxwell stress tensor, Lorentz force and Kelvin force density. These options provide designers with a universal and flexible framework, enabling them to pick the best technique according to the configuration and application. The field modulation concepts and the gearing effects have been investigated using the developed analytical framework as well as 2D and 3D FEM, whose results agree.Both radial-flux and axial-flux configurations, the two main structures of rotating electrical machines, have been studied as well.by Sajjad Mohammadi Yangijeh.S.M.S.M. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Scienc
Lahore in Motion
No full textLahore in Motion provides a portrait of the Pakistani metropolis by tracing the path of the city's first metro rail corridor. Construction for this major piece of public infrastructure began in 2015 and, over subsequent years, the nascent ‘Orange Line’ rapidly reconfigured Lahore’s urban landscape – displacing residents and slicing through existing structures along its route, all while offering Lahoris the promise of ‘world-class’ public transportation. The volume collects stories from a series of walks along the metro’s 27-kilometre path, bringing together a wide variety of authors – including academics and activists, architects and artists – to reflect on the relationship between urban change and belonging in a historic city.
Each chapter is organised around a particular station on the metro, but the volume moves far beyond the neighbourhoods shadowed by the train’s elevated track. Contributors navigate the friction generated by the Orange Line’s construction and reflect on how this project of connection both responds to and produces fragmentation in the urban environment. The book brings together critical insights on the politics of infrastructure in South Asia and the desires and dispossessions fuelling projects of development in the Global South, assessing how they unevenly inflect the intimate rhythms of everyday life in one of the world’s most populous cities.
Praise for Lahore in Motion
‘This brilliant collection of essays written by a stellar bunch of academics and practitioners is a critical addition to the expanding knowledge frontier on infrastructure and cities in Pakistan. Anchored in the mega-infrastructure project the Orange Line, the stories unfold at multiple scales and bring to life the contradictory effects of infrastructure's longstanding promise of a better urban future.’
Nausheen Anwar, author of Infrastructure Redux: Crisis, Progress in Industrial Pakistan and Beyond
‘A lovely, mind-boggling tapestry of a book. Lahore in Motion gives us sharp, short glimpses into how Lahore lives, dies, plays, goes to work, prays, celebrates, resists and surrenders. Intimate forays into how a city reinvents itself, struggles to breathe and remembers that other imagined Lahore of legends.’
Mohammed Hanif, author of Rebel English Academy
‘Unfolding the personal and neighbourhood frictions lived along the Orange Line, a sensitive, accessible and scholarly portrait of contemporary city life emerges in these pages as a choir of discordant voices ruminate on the practical and symbolic logics of urban infrastructure.’
Caroline Knowles, author of Serious Money: Walking Plutocratic London
‘A compelling journey with electric insights about Lahore’s old and new geographies one metro station at a time. Each author provides an intricate and personal gateway into the city to muse and reflect on how people live, aspire and remember.’
Rashmi Sadana, author of The Moving City: Scenes from the Delhi Metro and the Social Life of Infrastructur
انیسویں صدی کے ایک گمنام ناول "نشتر" کے مرکزی کرداروں کا اجمالی تجزیہ
No full textSajjad Husain Anjum Kasmandvi appeared in the last decade of the 19th
century with his important but neglected or very less disenssed novel "Nishter".
According to the author "Nishter" is the urdu translation of Syed Hassan Shah's
biographic persion novel "Nishter" which he wrote in 1793. But the persion version of
Nishter never founded. In this artical a brief analysis of main characters Hassan Shah
and Khanum Jan in presented
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