Displaying publications 41 - 60 of 122 in total

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  1. Fulltext Technique to repair iatrogenically-damaged roots during post canal preparation using resin composite and optic fibre posts
    Lui, J.L.
    Ann Dent, 2007;14(1):14-18.
    MyJurnal
    During post crown restoration, the preparation of the post canal can be fraught with difficulties resulting in widening, gouging and transportation of the post canal; sometimes with near root perforation. A technique is described to repair such iatrogenically damaged internal root canal walls using reinforcing resin composite and optic glass fibre posts. The root dentine, resin composite and glass fibres, having similar moduli of elasticity, will result in a repaired root with a ‘monolithic’ structure and possessing numerous desirable characteristics. This repair technique can easily be carried out in one sitting at the chairside thereby allowing the continued serviceability of the iatrogenically compromised root-filled tooth.
    Matched MeSH terms: Transportation
  2. Fulltext GIS modeling for selection of a transfer station site for residential solid waste separation and recycling
    Billa, L., Pradhan, B.
    Pertanika Journal of Science & Technology, 2013;21(2):487-498.
    MyJurnal
    In this study a GIS model was developed and spatial analytical techniques performed to identify and select a suitable location for a waste transfer station in the sprawling suburban town of Petaling Jaya. The lack of a transfer station in urban centres of Malaysia has caused many problems and affects the efficiency of waste collection and disposal. With diminishing space for landfills and the increasing cost of solid waste management, the need for urban solid-waste recycling has become very important. However, finding a place for waste to be efficiently sorted before unwanted waste can be carried to disposal landfills has social and physical constraints. This study applies GIS techniques and analysis for site selection and identifies an acceptable area. In the model, environmental, physical and social constraints were taken into account, resulting in the selection of a potential area that is acceptable to the residents of the area because it is out of range of causing public nuisance and within minimum travelling distance for collection vehicles. The results show that the potential location for the transfer station should be in proximity of the industrial area of Petaling Jaya, allowing for the possible sale of recyclable materials to local industries. The location is also sited near a major highway to allow quick transportation of the rest of the unwanted waste to the landfill.
    Matched MeSH terms: Transportation
  3. Fulltext A review of cosmetic and personal care products: halal perspective and detection of ingredient
    Hashim, P., Mat Hashim, D.
    Pertanika Journal of Science & Technology, 2013;21(2):281-292.
    MyJurnal
    The term halal refers to what ispermitted by Islamic law. It is a basic need for Muslims and encompasses all materials used in everyday life including cosmetics.Muslims want to be assured that the ingredients,handling, processing, distribution, transportation and types of cosmetic used are halal compliant. The halal aspects of cosmetic and personal care products cover ingredients, all the processes involved in production right up to delivery to consumers, safety and product efficacy evaluations. In order to verify halal compliance of cosmetic products, a method of detecting halal and non-halal ingredients is very important and critically needed. Halal cosmetic standards, halal certification and the halal logo can be used as benchmarks for halal compliance. In view of the importance of cosmetic and personal care products from the halal perspective, this review will cover the halal principles, halal cosmetic and personal care products, ingredients, standard and certification as well as safety. The development of the process of detecting non-halal ingredients and authenticating halal ingredients for potential cosmetic applications in recent years are included in this paper.
    Matched MeSH terms: Transportation
  4. Fulltext Geographic Information System (GIS) modeling approach to determine the fastest delivery routes
    Abousaeidi M, Fauzi R, Muhamad R
    Saudi J Biol Sci, 2016 Sep;23(5):555-64.
    PMID: 27579003 DOI: 10.1016/j.sjbs.2015.06.004
    This study involves the adoption of the Geographic Information System (GIS) modeling approach to determine the quickest routes for fresh vegetable delivery. During transport, fresh vegetables mainly deteriorate on account of temperature and delivery time. Nonetheless, little attention has been directed to transportation issues in most areas within Kuala Lumpur. In addition, perishable food normally has a short shelf life, thus timely delivery significantly affects delivery costs. Therefore, selecting efficient routes would consequently reduce the total transportation costs. The regression model is applied in this study to determine the parameters that affect route selection with respect to the fastest delivery of fresh vegetables. For the purpose of this research, ArcGIS software with network analyst extension is adopted to solve the problem of complex networks. The final output of this research is a map of quickest routes with the best delivery times based on all variables. The variables tested from regression analysis are the most effective parameters to make the flow of road networks slower. The objective is to improve the delivery services by achieving the least drive time. The main findings of this research are that Land use such as residential area and population as variables are the effective parameters on drive time.
    Matched MeSH terms: Transportation
  5. Fulltext Leisure constraints faced by elderly women: findings from a qualitative study among elderly women in Selangor
    Minhat, H.S.
    Malaysian Journal of Public Health Medicine, 2014;14(1):55-65.
    MyJurnal
    Women and elderly are often linked to several disadvantages and constraints in many aspects of life. The scenario could be even worse for an elderly woman. Participating in leisure has proven to be beneficial for elderly in general. Yet little is known about the pattern of leisure and constraints faced by elderly women in order for them to pursue leisure activities. This study aims to explore the various leisure constraints faced by the elderly women. A total of 20 elderly women were involved in this study, which were selected purposively and also by snowballing technique. An in-depth interview was conducted with each respondent lasted approximately 15 to 30 minutes. The identified constraints were categorized into three main themes, which were structural, intrapersonal and interpersonal constraints. Among factors that had been identified were preoccupation with domestic affairs, the unavailability of appropriate space or area to perform desired leisure activities, lack or unavailability of transportation, safety issue, misperceptions that being old should focus on religious activity and becoming effortless, domestic activities are comparable to exercise and lacking of elderly people to perform certain activities together. In view of the modifiable nature of most of constraints faced by the elderly women to pursue leisure activities, necessary actions should be taken by the relevant authorities in tackling the constraints and at the same time developing a more active and healthy elderly women society. The right of the elderly women and women in general should be acknowledged, including their desire to actively involve in certain leisure activities. They should also appropriately educate on the importance of leisure and involvement in other type of leisure activities other than religious activities.
    Matched MeSH terms: Transportation
  6. A study on safe accessibility for wheelchair user in selected KTM commuter station in Kuala Lumpur
    Abdul Halim Imaduddin, Abdul Hamid Nor Hanani
    Journal of Occupational Safety and Health, 2011;8(1):51-59.
    MyJurnal
    The research is focus generally to identify and investigate the issue of accessible design for wheelchair users on selected Keretapi Tanah Melayu Berhad (KTM) commuter stations in the city of Kuala Lumpur. The objectives are to ensure that the design of accessibility is comply with the law, regulations, standard requirements and guidelines; to understand the recent condition and their needs in commuter stations and to allow their secure equal rights and opportunities as others. The research began by gaining reliable information through literature study and a checklist for building audit was prepared to evaluate the accessibility. A building access survey was carried out on selected stations which enclosed three main stages to show the pattern of passengers’ path. Stage 1: From the road to the ticket counter. Stage 2: From the ticket counter to the platform. Stage 3: From the platform to the train. A series of structured questionnaire was also constructed to study and get a feedback from selected target of users. Result of findings in this study had been analyzed to assist the management and the station concerned in upgrading their station facilities to a comfortable, accessible, friendly and safe environment in order to encourage more users, including disabled persons to benefit from it.
    Matched MeSH terms: Transportation
  7. Fulltext Physico-mechanical properties of the josapine pineapple fruits
    Rosnah Shamsudin, Wan Ramli Wan Daud, Mohd Sobri Takrif, Osman Hassan
    Pertanika Journal of Science & Technology, 2009;17(1):-.
    MyJurnal
    The physico-mechanical properties data of fruits are important in the design of various handling, packing, and storage and transportation system. The physical-mechanical properties of pineapple fruit from the Josapine variety, namely the weight of the fruit (with and without peel), pulp to peel ratio, diameter of the whole fruit (with and without peel), at three different positions along the longitudinal axis of the fruit, length of the fruit (with and without peel) and the length of crown were studied using the standard method at seven stages of maturity during storage at 25°C and 52% (RH). The effect of fruit maturity on the firmness of each fruit at three different locations was measured using a cylindrical die of 6 mm in diameter with the Instron Universal Testing Machine. The results indicated that the average total weight of a single fruit is 886.86 ± 49.67 g. The average pulp to peel ratio is 1.91. The average diameter (with and without peel) was 86.83 ± 5.24 mm and 80.95 ± 4.15 mm (top section), 100.77 ± 3.84 mm and 90.19 ± 3.73 mm (middle section) and 97.17 ± 3.49 mm and 73.30 ± 5.11 mm (bottom section), respectively. The average length of the fruit (with and without peel) was 126.65 mm and 113.64 mm, respectively. The average length of crown was 89.13 mm. The firmness of the fruits was found to decrease with the stage of maturity. These data are important in determining the optimum stage of maturity for fruit processing.
    Matched MeSH terms: Transportation
  8. Graphene/transition metal dichalcogenides hybrid supercapacitor electrode: status, challenges, and perspectives
    Seman RNAR, Azam MA, Ani MH
    Nanotechnology, 2018 Dec 14;29(50):502001.
    PMID: 30248022 DOI: 10.1088/1361-6528/aae3da
    Supercapacitors, based on fast ion transportation, are among the most promising energy storage solutions that can deliver fast charging-discharging within seconds and exhibit excellent cycling stability. The development of a good electrode material is one of the key factors in enhancing supercapacitor performance. Graphene (G), an allotrope of carbon that consists of a single layer of carbon atoms arranged in a hexagonal lattice, elicits research attention among scientists in the field of energy storage due to its remarkable properties, such as outstanding electrical conductivity, good chemical stability, and excellent mechanical behavior. Furthermore, numerous studies focus on 2D materials that are analogous to graphene as electrode supercapacitors, including transition metal dichalcogenides (TMDs). Recently, scientists and researchers are exploring TMDs because of the distinct features that make 2D TMDs highly attractive for capacitive energy storage. This study provides an overview of the structure, properties, synthesis methods, and electrochemical performance of G/TMD supercapacitors. Furthermore, the combination of G and TMDs to develop a hybrid structure may increase their energy density by introducing an asymmetric supercapacitor system. We will also discuss the future prospect of this system in the energy field.
    Matched MeSH terms: Transportation
  9. Surface ozone trend in major rice growing areas in Malaysia
    Marzuki Ismail, Azrin Suroto, Nurul Ain Ismail, Mohd Talib Latif
    Sains Malaysiana, 2014;43:321-329.
    Surface ozone or tropospheric ozone has been recognized as one of the major factors that can give adverse impact on crops including rice plants. Effects of ozone on rice plants could be seen in decreased of biochemical activities and physiological performance which contribute to yield reduction. In Malaysia, surface ozone is on the rise due to increment anthropogenic sources i.e. urbanization, transportation and also industrialization process. This condition is alarming due to the facts that rice is the major staple food to the majority of Malaysian population. In this study, exceedence of ozone exposure above an hourly threshold concentration of 40 ppb (AOT40) and ozone trends in four major rice growing areas in Malaysia were assessed using time series analysis of ozone data recorded in each area from January 2000 until December 2010 with a total of 132 readings. The results showed a steady increase in exceedence ozone of yearly AOT40 and statistical significant upward trend for ozone concentrations in each rice growing area in Malaysia. This finding was particularly alarming because ozone is able to inhibit production of rice yields. Preventive actions need to be implemented as soon as possible in order to alleviate ozone threat to our national food security agenda.
    Matched MeSH terms: Transportation
  10. Accumulation of settling particles in some coral reef areas of Peninsular Malaysia
    Lee JN, Che Abd Rahim Mohamed
    Sains Malaysiana, 2011;40:1179-1186.
    The aim of this study was to determine the accumulation of settling particles in coral reefs of Peninsular Malaysia. Settling particles were collected from the coral reefs of Port Dickson, Pulau Langkawi, Pulau Tioman, Pulau Redang and Pulau Tinggi from 2005 to 2008. The average total settling particles in Pulau Langkawi and Port Dickson was 49.8 mg/cm2/day, while for Pulau Tioman, Pulau Redang, and Pulau Tinggi was 3.5 mg/cm2/day. The results showed that accumulations rate in west coast were higher than east coast of Peninsular Malaysia. However, Pulau Tioman in the east coast received high accumulations rate of settling particles in certain times of the year due to sediment resuspension at shallow reefs caused by high energy seasonal yearly wave and monsoon.
    Matched MeSH terms: Transportation Facilities
  11. Physiological and electroencephalographic changes in goats subjected to transportation, lairage, and slaughter
    Othman AH, Goh YM, Mohamed Mustapha N, Raghazli R, Kaka U, Imlan JC, et al.
    Anim Sci J, 2021 Dec;92(1):e13610.
    PMID: 34390058 DOI: 10.1111/asj.13610
    This preliminary trial investigated the effect of transportation and lairage periods on physiological parameters of goats subjected to slaughter. Nine male Boer cross goats aged 8-12 months were transported for 6 h and kept at lairage for 3, 6, or 16 h (n = 3). Blood samples were collected at pre- (pre-T) and post-transportation (post-T), and post-slaughter (post-S) for determination of hematological parameters, serum enzyme, protein, and cortisol concentrations. Electroencephalogram readings were taken at pre-T, post-T, pre-slaughter (pre-S), and post-S to determine the median frequency (F50 ) and total power (Ptot) values. At post-T, there were manifestations of stress leukogram; increase in hematocrit, total protein, and muscle enzyme concentrations; and decrease in Ptot (p 
    Matched MeSH terms: Transportation
  12. Microbial biodiversity of Tang and Pirgal mud volcanoes and evaluation of bio-emulsifier and bio-demulsifier activities of Capnophile bacteria
    Parsia Y, Sorooshian S
    Data Brief, 2017 Dec;15:262-271.
    PMID: 29034291 DOI: 10.1016/j.dib.2017.08.041
    The data presented in this article is related to the Master thesis; entitled "Survey Aerobic Microbial Diversity Mud Volcanoes in Chabahar and Khash Ports in Southern Iran" by the first author of this article, year 2011, Islamic Azad University, Iran (reference number (Parsia, 2011) [1] of this article). This article shows microbial biodiversity and evaluates bio-emulsifier and bio-demulsifier abilities of capnophile isolates, in order to introduce a superior isolate for the Microbial Enhanced Oil Recovery (MEOR) process in the petrochemical industry.
    Matched MeSH terms: Transportation Facilities
  13. Fulltext A New Compact Double-Negative Miniaturized Metamaterial for Wideband Operation
    Hasan MM, Faruque MRI, Islam SS, Islam MT
    Materials (Basel), 2016 Oct 13;9(10).
    PMID: 28773951 DOI: 10.3390/ma9100830
    The aim of this paper is to introduce a compact double-negative (DNG) metamaterial that exhibits a negative refractive index (NRI) bandwidth of more than 3.6 GHz considering the frequency from 2 to 14 GHz. In this framework, two arms of the designed unit cell are split in a way that forms a Modified-Z-shape structure of the FR-4 substrate material. The finite integration technique (FIT)-based Computer Simulation Technology (CST) Microwave Studio is applied for computation, and the experimental setup for measuring the performance is performed inside two waveguide ports. Therefore, the measured data complies well with the simulated data of the unit cell at 0-degree and 90-degree rotation angles. The designed unit cell shows a negative refractive index from 3.482 to 7.096 GHz (bandwidth of 3.61 GHz), 7.876 to 10.047 GHz (bandwidth of 2.171 GHz), and 11.594 to 14 GHz (bandwidth of 2.406 GHz) in the microwave spectra. The design also exhibits almost the same wide negative refractive index bandwidth in the major region of the C-band and X-band if it is rotated 90 degrees. However, the novelty of the proposed structure lies in its effective medium ratio of more than 4, wide bandwidth, and compact size.
    Matched MeSH terms: Transportation Facilities
  14. Towards sets of hazardous waste indicators. Essential tools for modern industrial management
    Peterson PJ, Granados A
    Environ Sci Pollut Res Int, 2002;9(3):204-14.
    PMID: 12094535
    Decision-makers require useful tools, such as indicators, to help them make environmentally sound decisions leading to effective management of hazardous wastes. Four hazardous waste indicators are being tested for such a purpose by several countries within the Sustainable Development Indicator Programme of the United Nations Commission for Sustainable Development. However, these indicators only address the 'down-stream' end-of-pipe industrial situation. More creative thinking is clearly needed to develop a wider range of indicators that not only reflects all aspects of industrial production that generates hazardous waste but considers socio-economic implications of the waste as well. Sets of useful and innovative indicators are proposed that could be applied to the emerging paradigm shift away from conventional end-of-pipe management actions and towards preventive strategies that are being increasingly adopted by industry often in association with local and national governments. A methodological and conceptual framework for the development of a core-set of hazardous waste indicators has been developed. Some of the indicator sets outlined quantify preventive waste management strategies (including indicators for cleaner production, hazardous waste reduction/minimization and life cycle analysis), whilst other sets address proactive strategies (including changes in production and consumption patterns, eco-efficiency, eco-intensity and resource productivity). Indicators for quantifying transport of hazardous wastes are also described. It was concluded that a number of the indicators proposed could now be usefully implemented as management tools using existing industrial and economic data. As cleaner production technologies and waste minimization approaches are more widely deployed, and industry integrates environmental concerns at all levels of decision-making, it is expected that the necessary data for construction of the remaining indicators will soon become available.
    Matched MeSH terms: Transportation
  15. Enhancing consumption of sustainable transportation: Determinants and outcome of consumer engagement with bike-sharing service
    Waqas M, Najmi A
    Environ Sci Pollut Res Int, 2023 Apr;30(18):53411-53423.
    PMID: 36856997 DOI: 10.1007/s11356-023-26067-5
    Bike-sharing service has become a popular sustainable means of transportation due to its direct impact on traffic congestion, energy consumption, the environment, and people's quality of life. Existing literature suggests that sustainable consumption can be promoted by engaging consumers with green products. This study examined drivers and the outcome of consumer engagement with bike-sharing services based on the technology acceptance model (TAM). A survey was conducted to collect the data from the users of the bike-sharing service in Kuala Lumpur. Structural equation modelling was used to analyse the data and find the relationship between variables. The empirical analyses showed that perceived ease of use and perceived usefulness of the bike-sharing service positively impact all facets of consumer engagement with bike-sharing service, which subsequently influences the continuance usage intention of bike-sharing service. The findings of this study offer useful insights that could enhance the consumption of bike-sharing service. This study also offers some guidelines to transportation practitioners, policymakers, and urban planners regarding promoting healthy and sustainable travel behaviour among urban commuters through bike-sharing service.
    Matched MeSH terms: Transportation
  16. Fulltext Implementation of a psychomotor vigilance test to investigate the effects of driving fatigue on oil and gas truck drivers' performance
    Al-Mekhlafi AA, Isha ASN, Al-Quraishi MS, Kanwal N
    Front Public Health, 2023;11:1160317.
    PMID: 37869200 DOI: 10.3389/fpubh.2023.1160317
    INTRODUCTION: Driving fatigue has been shown to increase the risk of accidents and potentially fatal crashes. Fatigue is a serious risk that some drivers do not take seriously. Previous studies investigated the effects of driving fatigue in the Malaysian oil and gas transportation industry by employing survey questionnaires. However, they did not explain the behavior of fatigue. Besides, these results required validation by a more reliable method that can describe how fatigue occurs.

    METHODS: Thus, in this study, we used the Psychomotor Vigilance Test (PVT-192) and a short survey to address driving fatigue behavior and identify the influences of driving fatigue on driving performance in real life (on the road) with actual oil and gas tanker drivers. The total participants in the experimental study were 58 drivers.

    RESULTS: For the analysis, a Wilcoxon Signed Ranks Test, Z value and Spearman's rho were used to measure the significant difference between the pre and post-tests of PVT and the correlation between the fatigue variables and driving performance.

    DISCUSSION: During the experiment's first and second days, this study's results indicated that driving fatigue gradually escalated. Likewise, there was a negative correlation based on the test of the relationship between the PVT data and the driving performance survey data. Additionally, the drivers suffer from accumulative fatigue, which requires more effort from the transportation company management to promote the drivers awareness of fatigue consequences.

    Matched MeSH terms: Transportation
  17. Analyzing the relationships between travel mode indicators and the number of passenger transport fatalities at the city level
    Asadi-Shekari Z, Moeinaddini M, Sultan Z, Shah MZ, Hamzah A
    Traffic Inj Prev, 2016 08 17;17(6):650-5.
    PMID: 26890058 DOI: 10.1080/15389588.2015.1136739
    OBJECTIVE: A number of efforts have been conducted on travel behavior and transport fatalities at the neighborhood or street level, and they have identified different factors such as roadway characteristics, personal indicators, and design indicators related to transport safety. However, only a limited number of studies have considered the relationship between travel behavior indicators and the number of transport fatalities at the city level. Therefore, this study explores this relationship and how to fill the mentioned gap in current knowledge.

    METHOD: A generalized linear model (GLM) estimates the relationships between different travel mode indicators (e.g., length of motorway per inhabitants, number of motorcycles per inhabitant, percentage of daily trips on foot and by bicycle, percentage of daily trips by public transport) and the number of passenger transport fatalities. Because this city-level model is developed using data sets from different cities all over the world, the impacts of gross domestic product (GDP) are also included in the model.

    CONCLUSIONS: Overall, the results imply that the percentage of daily trips by public transport, the percentage of daily trips on foot and by bicycle, and the GDP per inhabitant have negative relationships with the number of passenger transport fatalities, whereas motorway length and the number of motorcycles have positive relationships with the number of passenger transport fatalities.

    Matched MeSH terms: Transportation/methods*; Transportation/statistics & numerical data*
  18. Fulltext The effect of crumb rubber particle size to the optimum binder content for open graded friction course
    Ibrahim MR, Katman HY, Karim MR, Koting S, Mashaan NS
    ScientificWorldJournal, 2014;2014:240786.
    PMID: 24574875 DOI: 10.1155/2014/240786
    The main objective of this paper is to investigate the relations of rubber size, rubber content, and binder content in determination of optimum binder content for open graded friction course (OGFC). Mix gradation type B as specified in Specification for Porous Asphalt produced by the Road Engineering Association of Malaysia (REAM) was used in this study. Marshall specimens were prepared with four different sizes of rubber, namely, 20 mesh size [0.841 mm], 40 mesh [0.42 mm], 80 mesh [0.177 mm], and 100 mesh [0.149 mm] with different concentrations of rubberised bitumen (4%, 8%, and 12%) and different percentages of binder content (4%-7%). The appropriate optimum binder content is then selected according to the results of the air voids, binder draindown, and abrasion loss test. Test results found that crumb rubber particle size can affect the optimum binder content for OGFC.
    Matched MeSH terms: Transportation
  19. Travel itinerary uncertainty and the pre-travel consultation--a pilot study
    Flaherty G, Md Nor MN
    J Travel Med, 2016 Jan;23(1).
    PMID: 26782127 DOI: 10.1093/jtm/tav010
    Risk assessment relies on the accuracy of the information provided by the traveller. A questionnaire was administered to 83 consecutive travellers attending a travel medicine clinic. The majority of travellers was uncertain about destinations within countries, transportation or type of accommodation. Most travellers were uncertain if they would be visiting malaria regions. The degree of uncertainty about itinerary potentially impacts on the ability of the travel medicine specialist to perform an adequate risk assessment, select appropriate vaccinations and prescribe malaria prophylaxis. This study reveals high levels of traveller uncertainty about their itinerary which may potentially reduce the effectiveness of their pre-travel consultation.
    Matched MeSH terms: Transportation
  20. Fulltext An M/M/c/K State-Dependent Model for Pedestrian Flow Control and Design of Facilities
    Rahman K, Abdul Ghani N, Kamil AA, Mustafa A, Chowdhury MA
    PLoS One, 2015;10(7):e0133229.
    PMID: 26196124 DOI: 10.1371/journal.pone.0133229
    Pedestrian overflow causes queuing delay and in turn, is controlled by the capacity of a facility. Flow control or blocking control takes action to avoid queues from building up to extreme values. Thus, in this paper, the problem of pedestrian flow control in open outdoor walking facilities in equilibrium condition is investigated using M/M/c/K queuing models. State dependent service rate based on speed and density relationship is utilized. The effective rate of the Poisson arrival process to the facility is determined so as there is no overflow of pedestrians. In addition, the use of the state dependent queuing models to the design of the facilities and the effect of pedestrian personal capacity on the design and the traffic congestion are discussed. The study does not validate the sustainability of adaptation of Western design codes for the pedestrian facilities in the countries like Bangladesh.
    Matched MeSH terms: Transportation
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