Development of Anti-Mosquito Spray Formulation Based on Lipid-Core Nanocapsules Loaded with Cinnamaldehyde for Fabrics Application

Azlan Kamari,Siti Najiah Mohd Yusoff,Siew Tin Susana Wong,Norjan Yusof,Hidayatulfathi Othman,Mohd Zobir Hussein,Esther Phillip 한국섬유공학회 2022 Fibers and polymers Vol.23 No.8

In this study, poly(ε-caprolactone) lipid-core nanocapsules containing cinnamaldehyde were prepared byinterfacial deposition of pre-formed polymer and used for the first time in mosquito-repellent spray formulations on cotton,polyester and tetoron cotton fabrics. The synthesized nanocapsules formulations were characterized by dynamic lightscattering and Fourier transform infrared spectroscopy analyses. The retention of cinnamaldehyde-loaded lipid-corenanocapsules (Cin-LNCs) on cotton and polyester fabrics, before and after washing and heating, was studied using scanningelectron microscopy (SEM) and UV-Vis spectrometry. The repellency effect of fabrics treated with the Cin-LNC formulationagainst mosquitoes was evaluated in the laboratory using the Excito chamber method and in field trials conducted on rubberfarms. The SEM images and UV-Vis spectrometry results suggested that the fabrics treated with the Cin-LNC formulationshowed outstanding resistance to washing and heating. No skin irritation by treated fabrics was recorded in human volunteerswho took part in a 4-hour patch test. The treated fabrics exhibited good mosquito repellency (greater than 96 %) and were stillable to offer around 30 % repellency even after five cycles of washing and heating. The results indicate that the use of poly(ε-caprolactone) lipid-core nanocapsules is a promising technique to improve the fastness and longevity of repellents onfunctional textiles for insect control.

Monetary Policy and Foreign Shocks : A SVAR Analysis for Malaysia

Mohd Azlan Shah Zaidi,Lance A. Fisher 한국경제연구학회 2010 Korea and the World Economy Vol.11 No.3

This paper presents a structural vector autoregressive (SVAR) model of monetary policy in Malaysia. The model takes into account the economic and financial conditions in Malaysia‘s two most important trading partners, the United States and Japan. Identification of the SVAR is achieved by imposing zero restrictions non-recursively on the contemporaneous interactions among the variables. This identification leads to the interpretation of an interest rate shock as unanticipated monetary policy. We find that unanticipated monetary policy explains very little of the variability in output and inflation at all forecast horizons but does account for some short run variability in the real exchange rate. Foreign variables explain most of the variability of output and inflation, though domestic credit is important for output at the one quarter horizon. We conclude that foreign shocks are the dominant influence on the macroeconomic performance of Malaysia.

Foreign and Domestic Shocks: Macroeconomic Responses of ASEAN-3 Countries

Mohd Azlan Shah Zaidi,ZULKEFLY ABDUL KARIM,W.N.W. AZMAN-SAINI 연세대학교 동서문제연구원 2013 Global economic review Vol.42 No.3

The study provides new empirical evidence on the relative importance of foreign and domestic shocks on selected ASEAN-3 (Malaysia, Indonesia, and Thailand) macroeconomic variables. Three structural vector auto regression models are estimated for each country. The focal point is given on the formulation of the sources of foreign factors. The first model uses tradeweighted foreign variables of both US and Japan to represent the foreign factors. The other two models use US and Japan by themselves, respectively, to represent the foreign factors. Two important results are emerged. First, foreign sectors play an important role in influencing macroeconomic variables of each of the ASEAN-3 country, especially in the medium and the longrun horizon. Second, most of the time, the Japanese factors are more dominant than the US factors in influencing domestic output and inflation for each of the ASEAN-3 countries.

Cutting Force and Surface Roughness Characterization for High-Speed Milling of Compacted Graphite Iron

Mohd Azlan Suhaimi(아즐란 모드),Park Kyung Hee(박경희),Yang Gi Dong(양기동),Seok Woo Lee(이석우),Tae Gon Kim(김태곤),Dong Yoon Lee(이동윤),Dong Won Kim(김동원) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.5

Genetic Diversity and Clustering of the Rhoptry Associated Protein-1 of Plasmodium knowlesi from Peninsular Malaysia and Malaysian Borneo

Ummi Wahidah Azlan,Yee Ling Lau,Mun Yik Fong 대한기생충학ㆍ열대의학회 2022 The Korean Journal of Parasitology Vol.60 No.6

Human infection with simian malaria Plasmodium knowlesi is a cause for concern in Southeast Asian countries, especially in Malaysia. A previous study on Peninsular Malaysia P. knowlesi rhoptry associated protein-1 (PkRAP1) gene has discovered the existence of dimorphism. In this study, genetic analysis of PkRAP1 in a larger number of P. knowlesi samples from Malaysian Borneo was conducted. The PkRAP1 of these P. knowlesi isolates was PCR-amplified and sequenced. The newly obtained PkRAP1 gene sequences (n=34) were combined with those from the previous study (n=26) and analysed for polymorphism and natural selection. Sequence analysis revealed a higher genetic diversity of PkRAP1 compared to the previous study. Exon II of the gene had higher diversity (π=0.0172) than exon I (π=0.0128). The diversity of the total coding region (π=0.0167) was much higher than those of RAP1 orthologues such as PfRAP-1 (π=0.0041) and PvRAP1 (π=0.00088). Z-test results indicated that the gene was under purifying selection. Phylogenetic tree and haplotype network showed distinct clustering of Peninsular Malaysia and Malaysian Borneo PkRAP1 haplotypes. This geographical-based clustering of PkRAP1 haplotypes provides further evidence of the dimorphism of the gene and possible existence of 2 distinct P. knowlesi lineages in Malaysia.

Model Predictive Control for the Reactant Concentration Control of a Reactor

Hussain,Mohamed Azlan,Kittisupakorn,Paisan 한국화학공학회 2000 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.38 No.3

The reactant concentration control of a reactor using Model Predictive Control (MPC) is presented in this paper. Two major difficulties in the control of reactant concentration are that the measurement of concentration is not available for the control point of view and it is not possible to control the concentration without considering the reactor temperature. Therefore, MIMO control techniques and state and parameter estimation are needed. One of the MIMO control techniques widely studied recently is MPC. The basic concept of MPC is that it computes a control trajectory for a whole horizon time minimising a cost function of a plant subject to a dynamic plant model and an end point constraint. However, only the initial value of controls is then applied. Feedback is incorporated by using the measurements/estimates to reconstruct the calculation for the next time step. Since MPC is a model based controller, it requires the measurement of the states of an appropriate process model. However, in most industrial processes, the state variables are not all measurable. Therefore, an extended Kalman filter (EKF), one of estimation techniques, is also utilised to estimate unknown/uncertain parameters of the system. Simulation results have demonstrated that without the reactor temperature constraint, the MPC with EKF can control the reactant concentration at a desired set point but the reactor temperator is raised over a maximum allowable value. On the other hand, when the maximun allowable value is added as a constraint, the MPC with EKF can control the reactant concentration at the desired set point with less drastic control action and within the reactor temperature constraint. This shows that the MPC with EKF is applicable to control the reactant concentration of chemical reactors.

Loyalty Has No Limit

( Mohd Khairul Azlan Bin Rahmat ) 한국기초조형학회 2018 한국기초조형학회 작품집 Vol.2018 No.2

The Use of a Partially Simulated Exothermic Reactor to Test Nonlinear Algorithms

Hussain, Mohamed Azlan,Kittisupakorn, Paisan,Kershenbaum, Lester 한국화학공학회 2000 Korean Journal of Chemical Engineering Vol.17 No.5

Two nonlinear control algorithms for controlling nonlinear systems include the receding horizon method and the nonlinear neural network inverse model methods. These methods have been found to be useful in dealing with difficult-to-control nonlinear systems, especially in simulated systems. However although much simulation work has been performed with these methods, simulation only is inadequate to guarantee that these algorithms could be successfully implemented in real plants. For this reason, a relatively low cost and simple online experimental configuration of a partially simulated continuous reactor has been devised which allows for the realistic testing of a wide range of nonlinear estimation and control techniques i.e. receding horizon control and neural network inverse model control methods. The results show that these methods are viable and attractive nonlinear methods for real-time application in chemical reactor systems.

Determinants intention usage of Islamic E-Wallet Among Millennials

Mohammed Hariri Bakri(Mohammed Hariri Bakri ),Khalifa Khalfan Salem Muftah Almansoori(Khalifa Khalfan Salem Muftah Almansoori ),Nur Syazni Mohd Azlan(Nur Syazni Mohd Azlan ) People&Global Business Association 2023 Global Business and Finance Review Vol.28 No.1

Purpose: The main purpose of this study is to investigate the behavioural intention of the millennials in Malaysia toward the acceptance of Islamic e-wallet usage using Unified Theory of Acceptance and Use of Technology(UTAUT) via Structural Equation Model. Design/methodology/approach: The data have been collected by the 384 millennials in Malaysia. A person has aged between 25 until 40 years old is considered the millennials group The method that used in this paper is the Unified theory of acceptance and use of technology (UTAUT). There will be five independent variables: performance expectancy, effort expectancy, social influence, facilitating condition, and Shariah-compliant. Shariah-compliant variables have been added to the study because the study investigates the Islamic e-wallet where it is needed the Shariah-compliant elements. Before the data is analysed into measurement, preliminary analysis such as Exploratory Factor Analysis (EFA) is conducted as well. Findings: The result showed that the performance expectancy (PE), effort expectancy (EE), social influence (SI) and Shariah complaint (SC) significantly affect the Islamic e-wallet acceptance among the millennials. In addition, the Shariah complaint has a strong effect on Islamic e-wallet acceptance. In contrast, facilitating condition (FC) showed no effect on Islamic e-wallet acceptance. In this study, all the requirements for model fit were achieved. The four exogenous constructs are performance expectancy (PE), effort expectancy (EE), social influence (SI) and facilitating condition (FC). The mediating construct is behavioural intention (BI) and the endogenous is user adoption (UA). All exogenous constructs show significant p-value except for effort expectancy (EE). Research limitation/implications: This paper offers important implications specifically for the digital economy as it is currently making its way throughout every aspect in the human life, be it social, religion, financial transaction, entertainment and many more. The impact of digital economy can be traced through the emergence of Fintech. One of the least academically discussed areas is the adoption of Islamic Fintech. This study is considered necessary to explore the prediction of consumer behaviour in Islamic Fintech intention, as part of digital economy. Originality/value: The paper fills the gap perceived within the existing literature of finance technology by showing Islamic financial technology (E-Wallet) intention via model measurement.

Efficiency of TLDs with bottom-mounted baffles in suppression of structural responses when subjected to harmonic excitations

Hossein Shad,Azlan Adnan,Hamid Pesaran Behbahani,Mohammadreza Vafaei 국제구조공학회 2016 Structural Engineering and Mechanics, An Int'l Jou Vol.60 No.1

Tuned Liquid Dampers (TLDs) provide low damping when it comes to deep water condition, and that not all water depth is mobilized in energy dissipation. This research focussed on a method to improve the efficiency of TLDs with deep water condition. Several bottom-mounted baffles were installed inside a TLD and the dynamic characteristics of modified TLDs together with their effect on the vibration control of a SDOF structure were studied experimentally. A series of free vibration and harmonic forced vibration tests were carried out. The controlling parameter in the conducted tests was the Vertical Blocking Ratio (VBR) of baffles. Results indicated that increase in VBR decreases the natural frequency of TLD and increases its damping ratio. It was found that the VBR range of 10% to 30% reduced response of the structure significantly. The modified TLD with the VBR of 30% showed the best performance when reduction in structural responses under harmonic excitations were compared.