A5008624030- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Air Quality Monitoring and Forecasting
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- COVID-19 impact on air quality
- Vehicle emissions and performance
- Atmospheric aerosols and clouds
- Oil Palm Production and Sustainability
- Infection Control and Ventilation
- Heavy metals in environment
- Marine and coastal ecosystems
- Advanced Chemical Sensor Technologies
- Hydrology and Drought Analysis
- Water Quality and Pollution Assessment
- Indoor Air Quality and Microbial Exposure
- Ocean Acidification Effects and Responses
- Toxic Organic Pollutants Impact
- Flood Risk Assessment and Management
- Impact of Light on Environment and Health
- Fire effects on ecosystems
- Forecasting Techniques and Applications
- Energy Load and Power Forecasting
- Urban Heat Island Mitigation
- Heavy Metal Exposure and Toxicity
National University of Malaysia
2015-2024
Universiti Malaysia Kelantan
2023
Universiti Malaysia Terengganu
2018
University of Malaya
2011-2015
University of East Anglia
2014
Abstract. The health implications of PM2.5 in the tropical region Southeast Asia (SEA) are significant as can pose serious concerns. concentration and sources here strongly influenced by changes monsoon regime from south-west quadrant to north-east region. In this work, samples were collected at a semi-urban area using high-volume air sampler different seasons on 24 h basis. Analysis trace elements water-soluble ions was performed inductively coupled plasma mass spectroscopy (ICP-MS) ion...
Abstract The rapid spread of the SARS-CoV-2 in COVID-19 pandemic had raised questions on route transmission this disease. Initial understanding was that originated from respiratory droplets an infected host to a susceptible host. However, indirect contact viable virus by fomites and through aerosols has also been suggested. Herein, we report involvement fine indoor air particulates with diameter ≤ 2.5 µm (PM ) as virus’s transport agent. PM collected over four weeks during 48-h measurement...
The world is currently going through the COVID-19 pandemic which has caused hundreds of thousands deaths in just a few months. Considering need for lockdown measures, most countries, including Malaysia, have implemented 'Movement Control Orders' (MCOs) as prevention step to reduce deadly spread this disease. Local and worldwide media reported immediate improvement air quality due event. Nevertheless, data on effects MCOs at local scales are still sparse. Here, we investigate changes during...
Air quality monitoring is important in the management of environment and pollution. In this study, time series PM10 from air stations Malaysia were clustered based on similarity terms patterns. The identified clusters analyzed to gain meaningful information regarding patterns identify characterization for each cluster. data 5 July 2017 31 January 2019, obtained Malaysian Department Environment Dynamic Time Warping as dissimilarity measure used study. At same time, k-Means, Partitioning...
Abstract A comprehensive assessment of fine particulate matter (PM 2.5 ) compositions during the Southeast Asia dry season is presented. Samples PM were collected between 24 June and 14 September 2014 using a high‐volume sampler. Water‐soluble ions, trace species, rare earth elements, range elemental carbon (EC) organic analyzed. The characterization source apportionment investigated. results showed that h concentration ranged from 6.64 to 68.2 µg m −3 . Meteorological driving factors...
Abstract. Anthropogenic emissions from East Asia have increased over recent decades. These increases led to changes in atmospheric composition as far afield North America under the prevailing westerly winds. Here we show that, during Northern Hemisphere (NH) winter, pollution originating also directly affects deep tropics. We present observations of marked intra-seasonal variability anthropogenic tracer perchloroethene (C2Cl4) collected at two locations Borneo (117.84° E, 4.98° N and 118.00°...
Abstract. Air quality on the east coast of Peninsular Malaysia is influenced by local anthropogenic and biogenic emissions as well marine air masses from South China Sea aged transported highly polluted East Asian regions during winter monsoon season. An atmospheric observation tower has been constructed this coastline at Bachok Marine Research Station. Daily PM2.5 samples were collected top over a 3-week period, ion chromatography was used to make time-resolved measurements major ions...
The detrimental effects on human health caused by air pollution show that being able to predict quality is a task of utmost significance. application Artificial Intelligence (AI) and the Internet Things (IoT) seen as promising in this domain. performances state-of-the-art models terms prediction accuracy vary with different pollutants are acceptable only for certain only. This paper uses Machine Learning (ML) Deep (DL) concentrations six major pollutants. Data collected over 8 months 1400...
Conventional air quality monitoring systems, such as gas analysers, are commonly used in many developed and developing countries to monitor quality. However, these techniques have high costs associated with both installation maintenance. One possible solution complement is the application of low-cost sensors (LAQSs), which potential give higher spatial temporal data pollutants precision accuracy. In this paper, we present DiracSense, a custom-made LAQS that monitors ozone (O3), nitrogen...
In September and October 2015, Equatorial Asia experienced the most intense biomass burning episodes over past two decades. These events, mostly enhanced by extremely dry weather associated with occurrence of strong El Niño conditions, resulted in transnational transport hazardous pollutants from originating sources Indonesian Borneo Sumatra to highly populated Malaysian Peninsula. Quantifying population exposure form this event is a major challenge, only model-based studies have been...