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PublicationCharacterizations of synthesized laser-scribed graphene/molybdenum disulfide (LSG/MoS2) hybrids for supercapacitor performance(Iranian Environmental Mutagen Society, 2023)A sustainable and organic energy storage system from oil palm lignin waste-derived laser-scribed graphene embedded with molybdenum disulfide (LSG/MoS2 ) is reported in this work. LSG/MoS2 hybrids were fabricated to overcome the zero-band gap of graphene, and molybdenum disulfide restacking issues, and to induce electrical conductivity. Various amounts of LSG (0.1,0.5,1.0 g) were added in a MoS2 precursor to produce a nanoscale LSG/MoS2 hybrid nanostructure via the hydrothermal method. The Raman D, G, and 2D bands of LSG confirmed the formation of graphene from lignin. The FESEM morphology of LSG/MoS2 hybrids showed a porous and large surface area anchored with 3D MoS2 nanoflower on LSG. TEM imaging revealed MoS2 decorated LSG with a lattice spacing of 0.62 and 0.27nm, corresponding to the (002) and (100) planes of MoS2 . In terms of electrochemical performance, LSG with 0.1g of MoS2 has the lowest resistance, the highest specific capacitance of 6.7mF/cm2 at 0.05 mA/cm2, and excellent cyclic stability of 98.1% over 1000 cycles, based on Electrochemical Impedance Spectroscopy (EIS), Cyclic Voltammetry (CV) and Galvanostatic Charge Discharge (GCD) tests.
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PublicationEffect of institutional support and entrepreneurial knowledge on women’s entrepreneurial self-efficacy and venture performance in a developing country(Emerald, 2022)Women’s entrepreneurship has become an essential movement in developing economies and is accepted in all working areas. This study aims to propose the effect of institutional support (IS) and entrepreneurial knowledge (ENK) on women’s entrepreneurial self-efficacy (WESE) and venture performance (VP) in a developing country, namely, Pakistan. Design/methodology/approach: The constructive theoretical framework comprises of an extensive review of current literature. In this study, the researchers used a deductive approach that used cross-sectional data collected through women entrepreneurs completing a questionnaire. Consequently, this study comprised 324 usable samples. Findings: The structural equation model reveals that formal institutional support (FIS), informal institutional support (IFIS) and ENK have a positive and significant effect on WESE that is concerned with the VP. Finally, WESE is a potent construct that mediates the association between FIS, IFIS, ENK and VP. Practical implications: This study’s findings provide policymakers and government with guidance so that, by providing entrepreneurship and technical courses to develop more entrepreneurial self-efficacy, they focus more on women’s entrepreneurship. Ultimately, this improves VP. Finally, this study’s findings would provide guidelines for allocating financial assistance or funds for women. By using these funds, they can start their businesses to tackle miserable conditions, i.e. poverty and unemployment. Originality/value: This study’s findings help to support the creation of self-employment opportunities and starting a business to improve well-being and socioeconomic conditions.
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Publication3 Nanocellulose: from biosources to nanofiber and their applications(De Gruyter, 2023)Nanocellulose is a product of cellulose, a sustainable and plentiful resource. It's distinctive nanoscale structure makes it a versatile, green and interesting material for a variety of applications. This article describes in detail the biosources of nanocellulose, the types and characteristics of nanocellulose, and the techniques used to produce nanocellulose fibers. The mechanical properties and morphologies of nanocellulose fibers are addressed in depth, along with their prospective applications in sectors, including paper packaging, building materials, composites, biomedicine, energy storage and filtration. In addition, the current state of nanocellulose research, including the opportunities in the field, as well as the future prospects of nanocellulose as a viable and sustainable material for a vast array of applications, are discussed. © 2023 Walter de Gruyter GmbH, Berlin/Boston. All rights reserved.
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PublicationHeritage building modelling: Photogrammetry challenges in producing an as built drawing (ABD) Using Unmanned Aerial System (UAS)( 2021-03-01)Tracking the heritage building changes has been a primary concern in an architectural works, as the building features may transformed due to periodic of time. In addition, the perseverance of heritage buildings seems taken lightly due to the eagerness of the Malaysian architect in designing urban anxious architectural features for the new building development. Therefore, in order to preserve the delicate features in heritage building; the development of an 'As Built Drawing' (ABD) is crucial. Plotting the ABD has several laidback which includes the reachability of the human to measure the building on site. Hence, technology acceleration using Unmanned Aerial System (UAS) has provided an instrument to develop ABD without risking human's lives. Prior to development of ABD, there are several challenges in the implementation, specifically on the photogrammetry area. The photogrammetry phase in this research is crucial, as the ambiguous imaging captured can caused the misrepresentative Building Modelling replication. Therefore, the research aims to identify the imaging challenges during the progression of producing the ABD using UAS technology. With aid of the 3D Laser Scanner, the instrumental parameters have been set up, and data were recorded. On field data were collected in heritage building in Masjid Alwi Kangar. The ABD has been produced and the challenges arose from the implementation were bountiful to discuss. The research found that, the imaging challenges were the imperative parameters to tackle in order to score the accuracy in producing ABD using UAS technology.
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