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"Wan, Wan"
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Pyrolysis Recovery of Waste Shipping Oil Using Microwave Heating
This study investigated the use of microwave pyrolysis as a recovery method for waste shipping oil. The influence of different process temperatures on the yield and composition of the pyrolysis products was investigated. The use of microwave heating provided a fast heating rate (40 °C/min) to heat the waste oil at 600 °C. The waste oil was pyrolyzed and decomposed to form products dominated by pyrolysis oil (up to 66 wt. %) and smaller amounts of pyrolysis gases (24 wt. %) and char residue (10 wt. %). The pyrolysis oil contained light C9–C30 hydrocarbons and was detected to have a calorific value of 47–48 MJ/kg which is close to those traditional liquid fuels derived from fossil fuel. The results show that microwave pyrolysis of waste shipping oil generated an oil product that could be used as a potential fuel.
Journal Article
Regional pathways to nuclear nonproliferation
\"This book makes a case for a reorientation of the nuclear nonproliferation regime, posing an alternative conceptualization of nuclear order centered on the regional level. It draws on an array of theoretical tools from the literatures on regionalism, security governance, and international institutions, developing a framework that analyzes the conditions that would allow for more robust regional nuclear cooperation. These include the presence of (1) institutional architecture, (2) political, economic, and military relations among states, and (3) fundamental regional awareness and identity. Wan then deploys this theoretical approach to several case studies, including Northeast Asia, Southeast Asia, and the Middle East, focusing on two interrelated questions. First, what is the viability of a stronger regional nuclear order in the region? Second, what form would such an order most likely take? In the process, the book identifies the magnitude and character of the proliferation challenge specific to each region. It also considers the existing character of nuclear cooperation at the regional level. Wan presents the historical development of regional nuclear order in Latin America as a model for the rest of the world. In this area, regional institutions--ranging from organizations to dialogues to ad hoc arrangements--gradually became more involved across economic, environmental, and human security domains, providing the foundation for multilateral cooperation in the nuclear arena. As his analysis shows, in light of the contemporary proliferation landscape, the establishment and strengthening of such regional nuclear orders is essential\"-- Provided by publisher.
Book
Cross-sectional study of influenza trends and costs in Malaysia between 2016 and 2018
While influenza circulates year-round in Malaysia, research data on its incidence is scarce. Yet, this information is vital to the improvement of public health through evidence-based policies. In this cross-sectional study, we aimed to determine the trends and financial costs of influenza.
Data for the years 2016 through 2018 were gathered retrospectively from several sources. These were existing Ministry of Health (MOH) influenza sentinel sites data, two teaching hospitals, and two private medical institutions in the Klang Valley, Malaysia. Expert consensus determined the final estimates of burden for laboratory-confirmed influenza-like illness (ILI) and severe acute respiratory infection (SARI). Economic burden was estimated separately using secondary data supplemented by MOH casemix costing.
Altogether, data for 11,652 cases of ILI and 5,764 cases of SARI were extracted. The influenza B subtype was found to be predominant in 2016, while influenza A was more prevalent in 2017 and 2018. The distribution timeline revealed that the highest frequency of cases occurred in March and April of all three years. The costs of influenza amounted to MYR 310.9 million over the full three-year period.
The study provides valuable insights into the dynamic landscape of influenza in Malaysia. The findings reveal a consistent year-round presence of influenza with irregular seasonal peaks, including a notable influenza A epidemic in 2017 and consistent surges in influenza B incidence during March across three years. These findings underscore the significance of continuous monitoring influenza subtypes for informed healthcare strategies as well as advocate for the integration of influenza vaccination into Malaysia's national immunization program, enhancing overall pandemic preparedness.
Journal Article
Advancements in Monitoring Water Quality Based on Various Sensing Methods: A Systematic Review
Nowadays, water pollution has become a global issue affecting most countries in the world. Water quality should be monitored to alert authorities on water pollution, so that action can be taken quickly. The objective of the review is to study various conventional and modern methods of monitoring water quality to identify the strengths and weaknesses of the methods. The methods include the Internet of Things (IoT), virtual sensing, cyber-physical system (CPS), and optical techniques. In this review, water quality monitoring systems and process control in several countries, such as New Zealand, China, Serbia, Bangladesh, Malaysia, and India, are discussed. Conventional and modern methods are compared in terms of parameters, complexity, and reliability. Recent methods of water quality monitoring techniques are also reviewed to study any loopholes in modern methods. We found that CPS is suitable for monitoring water quality due to a good combination of physical and computational algorithms. Its embedded sensors, processors, and actuators can be designed to detect and interact with environments. We believe that conventional methods are costly and complex, whereas modern methods are also expensive but simpler with real-time detection. Traditional approaches are more time-consuming and expensive due to the high maintenance of laboratory facilities, involve chemical materials, and are inefficient for on-site monitoring applications. Apart from that, previous monitoring methods have issues in achieving a reliable measurement of water quality parameters in real time. There are still limitations in instruments for detecting pollutants and producing valuable information on water quality. Thus, the review is important in order to compare previous methods and to improve current water quality assessments in terms of reliability and cost-effectiveness.
Journal Article
Why Did BERSATU Leave Pakatan Harapan?
The Pakatan Harapan (PH) coalition won Malaysia's 14th general election on 9 May 2018, the first time a regime change took place in the country. However, it lost its majority in late February 2020, when Parti Pribumi Bersatu Malaysia (BERSATU) left the coalition.The four parties in PH had very different ideologies, especially when it comes to issues of race and religion. But despite taking various steps to create a coalition agreement, the more fundamental differences were never reconciled during the coalition's time in power.PH won GE-14 with a relatively low level of support from the ethnic Malays, who perceived it to be a coalition dominated by the mainly Chinese DAP. Fearmongering about how PH and the DAP were a threat to Malay privileges further weakened PH while in government.Furthermore, BERSATU disliked the possibility that Parti Keadilan Rakyat (KEADILAN) president Anwar Ibrahim might succeed Mahathir Mohamad as prime minister. They did not trust Anwar to champion the Malay agenda if he became prime minister.BERSATU decided as early as in 2019 to explore leaving PH to form a new Malay-led government, and saw the departure as a necessary step for a better chance at winning GE15.This was a controversial decision and it created a major rift within BERSATU itself, with party chairman and then Prime Minister Mahathir Mohamad refusing to accept the party's decision to leave PH.Following Mahathir's sudden resignation on 24 February 2020, BERSATU immediately announced their departure from PH. This led to a series of events that culminated in the collapse of PH and the formation a Perikatan Nasional government led by the three biggest Malay parties, UMNO, BERSATU and PAS.The whole episode shows that any coalition or political parties that wish to govern Malaysia must not ignore sentiments among the Malays, especially those in rural areas.
eBook
Oral health-related quality of life of adult Orang Asli in Jelebu, Malaysia: A cross-sectional study
Aims: This study aimed at exploring the self-perception of Orang Asli (OA) from the Temuan tribe in Jelebu by using the Global Self-rated Oral Health (GSROH) and General Oral Health Assessment Index (GOHAI). Materials and Methods: It was a cross-sectional study involving a two-stage sampling to select the district and villages. A total of 325 participants were selected based on convenience sampling. Results: Almost half of the participants rated their oral health as poor or average. The mean GOHAI score was 52.96 (±7.749), ranging from 29 to 60. The GOHAI score was statistically significantly lower for female gender (P = 0.025), lower education level (P = 0.001), and elderly (P = 0.001). The GSROH score was also statistically significant with GOHAI score (P = 0.001). Conclusions: A limited number of studies were conducted in this area, particularly in the vulnerable population of OA. Our study found that half of the OA living in the fringe had a poor GOHAI score. It is, therefore, suggested that potential study and intervention programs concentrate on the low GOHAI score group; the male, lower educational context, and the elderly.
Journal Article