MyMedR

Displaying publications 1 - 20 of 28 in total

Abstract:

Sort:

Fulltext Pilot study to investigate the feasibility of the Home Falls and Accidents Screening Tool (HOME FAST) to identify older Malaysian people at risk of falls

Romli MH, Mackenzie L, Lovarini M, Tan MP

BMJ Open, 2016 08 16;6(8):e012048.
PMID: 27531736 DOI: 10.1136/bmjopen-2016-012048

OBJECTIVE: The relationship between home hazards and falls in older Malaysian people is not yet fully understood. No tools to evaluate the Malaysian home environment currently exist. Therefore, this study aimed to pilot the Home Falls and Accidents Screening Tool (HOME FAST) to identify hazards in Malaysian homes, to evaluate the feasibility of using the HOME FAST in the Malaysian Elders Longitudinal Research (MELoR) study and to gather preliminary data about the experience of falls among a small sample of Malaysian older people.
DESIGN: A cross-sectional pilot study was conducted.
SETTING: An urban setting in Kuala Lumpur.
PARTICIPANTS: 26 older people aged 60 and over were recruited from the control group of a related research project in Malaysia, in addition to older people known to the researchers.
PRIMARY OUTCOME MEASURE: The HOME FAST was applied with the baseline survey for the MELoR study via a face-to-face interview and observation of the home by research staff.
RESULTS: The majority of the participants were female, of Malay or Chinese ethnicity and living with others in a double-storeyed house. Falls were reported in the previous year by 19% and 80% of falls occurred at home. Gender and fear of falling had the strongest associations with home hazards. Most hazards were detected in the bathroom area. A small number of errors were detected in the HOME FAST ratings by researchers.
CONCLUSIONS: The HOME FAST is feasible as a research and clinical tool for the Malaysian context and is appropriate for use in the MELoR study. Home hazards were prevalent in the homes of older people and further research with the larger MELoR sample is needed to confirm the validity of using the HOME FAST in Malaysia. Training in the use of the HOME FAST is needed to ensure accurate use by researchers.

Matched MeSH terms: Interior Design and Furnishings/statistics & numerical data*
Fulltext Dataset for assessing the efficiency factors in Malaysian ports: Dry bulk terminal

Rozar NM, Razik MA, Sidik MH, Kamarudin S, Ismail MR, Azid A, et al.

Data Brief, 2020 Aug;31:105858.
PMID: 32637478 DOI: 10.1016/j.dib.2020.105858

This research paper provides for the identification of dry bulk terminal efficiencies on the basis of 10 key performance factors in Malaysian ports. Data were collected from 18 dry bulk ports in Malaysia in 2017 through an online questionnaire and distributed via e-mail. The dispersion of the respondents corresponds approximately to the structure of the Malaysian maritime terminal in dry bulk. The data provides port management perceptions towards 10 variables that have been surveyed. Each perception assessed the level of efficiency factors based on a percentage rate of 100%. Efficiency factors in dry bulk terminals have been identified with varying characteristics based on a descriptive analysis table. The dataset presented consists of a brief analysis of all 10 variables involved, including the minimum, maximum, mean, interquartile median and standard deviation. In addition to the descriptive analysis, the normality test and histogram were also performed. Data can be used to measure ports-efficiency factors in another research.

Matched MeSH terms: Interior Design and Furnishings
Experimental data for the slug two-phase flow characteristics in horizontal pipeline

Mohmmed AO, Nasif MS, Al-Kayiem HH

Data Brief, 2018 Feb;16:527-530.
PMID: 29270452 DOI: 10.1016/j.dib.2017.11.026

The data presented in this article were the basis for the study reported in the research articles entitled "Statistical assessment of experimental observation on the slug body length and slug translational velocity in a horizontal pipe" (Al-Kayiem et al., 2017) [1] which presents an experimental investigation of the slug velocity and slug body length for air-water tow phase flow in horizontal pipe. Here, in this article, the experimental set-up and the major instruments used for obtaining the computed data were explained in details. This data will be presented in the form of tables and videos.

Matched MeSH terms: Interior Design and Furnishings
Fulltext Developing Pandemic Prevention and Control by ANP-QFD Approach: A Case Study on Urban Furniture Design in China Communities

Liu J, Kamarudin KM, Liu Y, Zou J

Int J Environ Res Public Health, 2021 Mar 06;18(5).
PMID: 33800764 DOI: 10.3390/ijerph18052653

BACKGROUND: An infectious disease can affect human beings at an alarming speed in modern society, where Coronavirus Disease 2019 (COVID-19) has led to a worldwide pandemic, posing grave threats to public security and the social economies. However, as one of the closest attachments of urban dwellers, urban furniture hardly contributes to pandemic prevention and control.
METHODS: Given this critical challenge, this article aims to propose a feasible solution to coping with pandemic situations through urban furniture design, using an integrated method of Quality Function Deployment (QFD) and Analytic Network Process (ANP). Eight communities in China are selected as the research sites, since people working and living in these places have successful experience preventing and containing pandemics.
RESULTS: Three user requirements (URs), namely, usability and easy access, sanitation, and health and emotional pleasure, are determined. Meanwhile, seven design requirements (DRs) are identified, including contact reduction, effective disinfection, good appearance, social and cultural symbols, ergonomics, smart system and technology and sustainability. The overall priorities of URs and DRs and their inner dependencies are subsequently determined through the ANP-QFD method, comprising the House of Quality (HQQ). According to the theoretical results, we propose five design strategies for pandemic prevention and control.
CONCLUSION: It is demonstrated that the incorporated method of ANP-QFD has applicability and effectiveness in the conceptual product design process. This article can also provide a new perspective for pandemic prevention and control in densely populated communities in terms of product design and development.

Matched MeSH terms: Interior Design and Furnishings
Ergonomic study on the manual component insertion lines for occupational health and safety improvements

Sen RN, Yeow PH

Int J Occup Saf Ergon, 2003;9(1):57-74.
PMID: 12636892

The study aimed at reducing the occupational health and safety problems faced by the manual component insertion operators. Subjective and objective assessments, and direct observations were made in the printed circuit assembly factory. Simple and low-cost ergonomic interventions were implemented, that is, repairing chairs, reducing high workloads, assigning operators to a maximum of 2 workstations, confining machines that emitted bad smell and much noise, and providing finger work aids. The results of the interventions were reductions in operators' work discomforts, that is, chair discomfort (by 90%), high work stress, and discomfort due to profound change in their workstations. Their health hazards were also eliminated, that is, inhalation of toxic fumes, exposure to too much noise, and pain due to pressing sharp components.

Matched MeSH terms: Interior Design and Furnishings
Compliances of airborne microbe in different phases of building commisioning

Ahmad Sayuti Zainal Abidin, Leman, A.M., Nor Mohd Razif Noraini

Journal of Occupational Safety and Health, 2012;9(3):39-44.
MyJurnal

This study intended to investigate the level on airborne microbe in indoor air for new constructed building. It was divided by three different phase of building commissioning in Bandar Baru Bangi, Selangor. The first phase of the sampling was carried out after the building fully handed over from the main contractor to the building owner. Second phase of the sampling take place after the building is equipped with furniture. Phase three sampling is conducted after one month of building occupancy. Airborne microbes’ concentrations were determined by using a single stage impactor (Biosampler) as per requirement of National Institute of Occupational Safety and Health (NIOSH) method, NIOSH Manual Analytical Method MAM 0800. The total concentration of airborne bacteria and fungi were average to 641 and 38 CFU/m³ in the first phase, 133 and 117 CFU/m³ in the second phase, and 389 and 52 CFU/m³ in the third phase. These findings indicate that although a new constructed building should be having a significant background level of airborne microbe (total bacteria and total fungi). The building owner should be aware to their indoor air status to protect the occupant from the safety and health problem (risk) especially for ventilated building.

Matched MeSH terms: Interior Design and Furnishings
Comparison of indoor air contaminants in different stages of new building occupancy: Training and office setting

Nor Mohd Razif Noraini, Leman, A.M., Ahmad Sayuti ZainalAbidin, Ruslina Mohd. Jazar, LailaShuhada Mat Zin, Rasdan Ismail, et al.

Journal of Occupational Safety and Health, 2012;9(3):31-38.
MyJurnal

This study has been conducted in a new constructed building of NIOSH Malaysia located at Bandar Baru Bangi, Selangor. The goal of the case study is focusing on the level of Indoor Air Contaminants (IAC) including chemical contaminants within three consequent stages which are before furniture install, after furniture install and during one month occupancy. This study was divided the sampling area into two main facilities which are training and office setting. The contaminants has been measured consist of sixparameters such as Carbon Dioxide (CO2), Carbon Monoxide (CO), Total Volatile Organic Compounds (TVOC), Formaldehyde, Respirable Particulates (PM10) and Ozone. The result of Carbon Monoxide (CO), Total Volatile Organic Compound (TVOC), Respirable Particulates (PM10) and Ozone show an increasing trend across the three sampling stages. The Formaldehyde show an increasing trend in the first and second stages but were reduced significantly the last stage of sampling. These finding indicates that furniture and fittings installed might be a potential sources of indoor air contaminants. The management should be aware to their indoor air status to protect the occupant from the risk of unwanted exposure especially during the early stage of building occupancy.

Matched MeSH terms: Interior Design and Furnishings
Strategic hazard mitigation of waste furniture boards via pyrolysis: Pyrolysis behavior, mechanisms, and value-added products

Foong SY, Liew RK, Lee CL, Tan WP, Peng W, Sonne C, et al.

J Hazard Mater, 2022 01 05;421:126774.
PMID: 34364214 DOI: 10.1016/j.jhazmat.2021.126774

Waste furniture boards (WFBs) contain hazardous formaldehyde and volatile organic compounds when left unmanaged or improperly disposed through landfilling and open burning. In this study, pyrolysis was examined as a disposal and recovery approach to convert three types of WFBs (i.e., particleboard, plywood, and fiberboard) into value-added chemicals using thermogravimetric analysis coupled with Fourier-transform infrared spectrometry (TG-FTIR) and pyrolysis coupled with gas chromatography/mass spectrometry (Py-GC/MS). TG-FTIR analysis shows that pyrolysis performed at an optimum temperature of 250-550 °C produced volatile products mainly consisting of carbon dioxide, carbon monoxide, and light hydrocarbons, such as methane. Py-GC/MS shows that pyrolysis at different final temperatures and heating rates recovered mainly phenols (25.9-54.7%) for potential use as additives in gasoline, colorants, and food. The calorific value of WFBs ranged from 16 to 18 MJ/kg but the WFBs showed high H/C (1.7-1.8) and O/C (0.8-1.0) ratios that provide low chemical energy during combustion. This result indicates that WFBs are not recommended to be burned directly as fuel, however, they can be pyrolyzed and converted into solid pyrolytic products such as biochar with improved properties for fuel application. Hazardous components, such as cyclopropylmethanol, were removed and converted into value-added compounds, such as 1,4:3,6-dianhydro-d-glucopyranose, for use in pharmaceuticals. These results show that the pyrolysis of WFBs at high temperature and low heating rate is a promising feature to produce value-added chemicals and reduce the formation of harmful chemical species. Thus, the release of hazardous formaldehyde and greenhouse gases into the environment is redirected.

Matched MeSH terms: Interior Design and Furnishings*
Fulltext A study of computer-related upper limb discomfort and computer vision syndrome

Sen A, Richardson S

J Hum Ergol (Tokyo), 2007 Dec;36(2):45-50.
PMID: 18572794 DOI: 10.11183/jhe1972.36.2_45

Personal computers are one of the commonest office tools in Malaysia today. Their usage, even for three hours per day, leads to a health risk of developing Occupational Overuse Syndrome (OOS), Computer Vision Syndrome (CVS), low back pain, tension headaches and psychosocial stress. The study was conducted to investigate how a multiethnic society in Malaysia is coping with these problems that are increasing at a phenomenal rate in the west. This study investigated computer usage, awareness of ergonomic modifications of computer furniture and peripherals, symptoms of CVS and risk of developing OOS. A cross-sectional questionnaire study of 136 computer users was conducted on a sample population of university students and office staff. A 'Modified Rapid Upper Limb Assessment (RULA) for office work' technique was used for evaluation of OOS. The prevalence of CVS was surveyed incorporating a 10-point scoring system for each of its various symptoms. It was found that many were using standard keyboard and mouse without any ergonomic modifications. Around 50% of those with some low back pain did not have an adjustable backrest. Many users had higher RULA scores of the wrist and neck suggesting increased risk of developing OOS, which needed further intervention. Many (64%) were using refractive corrections and still had high scores of CVS commonly including eye fatigue, headache and burning sensation. The increase of CVS scores (suggesting more subjective symptoms) correlated with increase in computer usage spells. It was concluded that further onsite studies are needed, to follow up this survey to decrease the risks of developing CVS and OOS amongst young computer users.

Matched MeSH terms: Interior Design and Furnishings
Fulltext Class timetable preparation gets easier with CSETT

Zaimi Mohamed, Suhaily Maizan Abdul Manaf, Sholehah Abdullah, Siti Fatimah Mardiah Hamzah, Salwani Affandi, Nur Azwani Mohamad Azmin, et al.

Jurnal Inovasi Malaysia, 2018;2(1):17-30.
MyJurnal

Identifying courses and determining the number of classesto be opened are among the importantstepsin the early stage of classtimetable preparation. Any mistake that happened during thisstage will not only cause problemsto students but also disrupt other parties. Students will not be able to register courses as a result of an incomplete class timetable, while excess classes will result in lecturers wasting their time in empty classrooms. Further, the situation would also increase stress among lecturers who are also members of the timetable committee as they need to postpone classes to fix the timetable immediately. Based on Universiti Teknologi MARA (UiTM) Tansformation Program (TRANS4U), Faculty of Business and Management (FBM), UiTM Cawangan Terengganu have taken the initiative to further examine the issue and recommended the relevant process to be enhanced. Upon analysis of the primary causes of the problem and recommendation by team members, an electronic data managementsystem known as Course Setting and Tracking (CSETT) was developed. CSETT enables students to plan and monitor courses while providing latest information to be used by AcademicAdministrators and otherrelevant parties. With an up-to-date and easily accessed information, class timetable could be prepared accurately and fast. The effectiveness of CSETT was proven when class time table was able to be prepared within seven days compared to 14 days prior to system implementation.

Matched MeSH terms: Interior Design and Furnishings
Fulltext Work-related hand injuries: type, location, cause, mechanism and severity in a tertiary hospital

Al-Husuny, A., Rampal, L., Manohar, A.

Malaysian Journal of Medicine and Health Sciences, 2012;8(2):41-49.
MyJurnal

Work-Related Hand Injuries (WRHIs) may result in disability and diminished productivity and cause economic impacts not only to the individual, worker’s families and industries, but to the local community as well.
Objectives: To determine the prevalence of severe Work-Related Hand Injuries (WRHIs) and factors associated at a tertiary hospital.
Methods: A pre-tested validated questionnaire was used to obtain data. All patients 18 years and above with WRHIs seen at a tertiary hospital between January 2010 and June 2010 were included in the study. Data was analysed using SPSS version 18.
Results: Out of the 297 industrial accidents, 74 (24.9%) were WRHIs. Among those with WRHIs, (47.3%) of them had severe hand injuries. The overall mean age of the respondents was 30.36 (± 9.54 SD) years. Majority (82.5%) of the injuries occurred between Mondays to Friday. Majority (70.1%) of hand injuries were caused by machine and 48.6% of the hand injuries occurred when the hand was caught in the operating part of the machine. Majority (62.1%) of the respondents had fingers’ injuries and 32.4% had open fracture. Bivariate analysis showed that there was significant association between severity of WRHIs and locations of injury, mechanisms of injury, sources of injury and sectors of industry (p < 0.05). Logistic regression analysis showed that WRHIs was significantly associated with source of injury and sector of industry. Respondents with hand injury resulted while operating on mechanical machine was 26 times more likely to report severe WRHIs than those with other sources of their hand injury like (sharp tool, heavy door, and wet floor). Respondents working in metal-machinery industries were eight times more likely to report severe WRHIs than those who working in other sectors of industry like (wood-furniture, constriction, food preparing, service and automotive).
Conclusions: WRHIs contributed to 24.9% of all industrial accidents seen at the emergency department and orthopaedic clinic and 47.3% of the respondents with WRHIs had severe hand injuries. Severity of WRHIs was significantly associated with sources of injury and sectors of industry.
Study site: emergency room, orthopaedic ward, general surgery ward and the orthopaedic outpatient clinic of a tertiary hospital

Matched MeSH terms: Interior Design and Furnishings
Fulltext Mismatch between furniture dimension and anthropometric measures among primary school children in Putrajaya

Adib Asmawi Mohd Yusoff, Irniza Rasdi, Ahmed S. Mahmoud Ben Hameid, Karmegam Karuppiah

Malaysian Journal of Public Health Medicine, 2016;16(10):0-0.
MyJurnal

Ergonomic is important in classroom. Sitting for protracted period in class may lead students to develop musculoskeletal disorders. Their physical health and performance in the class may increase by designing school furniture that match with human body. In Malaysia, there is a lack of ergonomic assessment for school environment especially in urban areas. The aim of this study is to determine the mismatch between the furniture dimension and anthropometric parameters among primary school children in Putrajaya. This is a cross-sectional study which involved 100, Year 1 and Year 6 primary school students randomly selected in Putrajaya. Five anthropometric measurements (popliteal height, buttock popliteal length, elbow height, shoulder height (sitting), hip breadth) as well as five furniture dimensions (seat height, seat depth, seat width, backrest height and seat to desk height) were measured. Instrument used is Martin type anthropometer set, SECA body meter, and SECA weighing scale. Calculation for determining mismatch between the furniture and anthropometric measures were calculated using a standard mismatch formula. There was 100% mismatch for seat height, seat depth, and seat to seat to desk height for Year 1. As for Year 6, mismatch was reported 100% for backrest height and seat to desk height. There were significance difference for parameters of popliteal height between Year 1 and Year 6 and between male and female of Year 1. There was a presence of mismatch between furniture dimension and children anthropometric measurement. Proposed dimension of furniture shows decrease in percentage of mismatch for the most parameter of anthropometric measurement.

Matched MeSH terms: Interior Design and Furnishings
Publisher Correction: The global distribution of tetrapods reveals a need for targeted reptile conservation

Roll U, Feldman A, Novosolov M, Allison A, Bauer AM, Bernard R, et al.

Nat Ecol Evol, 2017 11;1(11):1785.
PMID: 29046563 DOI: 10.1038/s41559-017-0380-7

In this Article originally published, owing to a technical error, the author 'Laurent Chirio' was mistakenly designated as a corresponding author in the HTML version, the PDF was correct. This error has now been corrected in the HTML version. Further, in Supplementary Table 3, the authors misspelt the surname of 'Danny Meirte'; this file has now been replaced.

Matched MeSH terms: Interior Design and Furnishings
Co-composting of palm oil mill sludge-sawdust

Yaser AZ, Abd Rahman R, Kalil MS

Pak J Biol Sci, 2007 Dec 15;10(24):4473-8.
PMID: 19093514

Composting of Palm Oil Mill Sludge (POMS) with sawdust was conducted in natural aerated reactor. Composting using natural aerated reactor is cheap and simple. The goal of this study is to observe the potential of composting process and utilizing compost as media for growing Cymbopogun citratus, one of Malaysia herbal plant. The highest maximum temperature achieved is about 40 degrees C and to increase temperature bed, more biodegradable substrate needs to be added. The pH value decrease along the process with final pH compost is acidic (pH 5.7). The highest maximum organic losses are about 50% with final C/N ratio of the compost is about 19. Final compost also showed some fertilizing value but need to be adjusted to obtain an ideal substrate. Addition of about 70% sandy soil causes highest yield and excellent root development for C. citratus in potted media. Beside that, compost from POMS-sawdust also found to have fertilizer value and easy to handle. Composting of POMS with sawdust shows potential as an alternative treatment to dispose and recycle waste components.

Matched MeSH terms: Interior Design and Furnishings
Fulltext Product structure initialization, the bottleneck of ERP implementation in customer driven environments: a case study

Niestanak, S. Abedi, Faieza, A.A., Sulaiman, S., Rosnah, M.Y.

Pertanika Journal of Science & Technology, 2011;19(1):77-92.
MyJurnal

This study of the implementation of enterprise resource planning (ERP) in a customer driven environment analyzes the critical success factors throughout the initialization phase. The dynamic and stochastic nature of customer driven environments results in a massive workload of product structure configuration tasks related to new arrivals on one hand and a constant updating process on the other. Meanwhile, the development and implementation of an ERP system was studied from the very first step (i.e. the feasibly study for implementing an ERP) to the last step (i.e. testing the outputs of the implemented system) in an office furniture company for three years. The study involved analyzing of the data collected that were from a series of interviews, as well as direct observations and reviewing of the company’s documents. Based on the output of the analysis phase, a top-down hierarchical analysis of goals and CSFs were carried out according to the CSF analysis method. Three top level objectives included reducing project failure risk, project cost, and project time. Analysing the primary results of the study (i.e. activity model, data flow diagram DFD of different levels, system problems and potential solutions descriptions, etc.) revealed that the critical phase of the implementation project would be product structure initialization and this should be taken into consideration as the bottleneck of production planning in customer driven environment, which dramatically reduced the ERP efficiency in this kind of environment. Moreover, initializing issues of the same process is the main obstacle to the success of the ERP implementation, as it considerably raises the project failure risk and cost. Therefore, the simplification, facilitation, and automation of the PSCM process, which lead to acceleration of this process, are the most significant success factors for the ERP implementation projects in customer driven environment.

Matched MeSH terms: Interior Design and Furnishings
Fulltext Culture of the traditional Malays: Usage of sustainable furniture in internal spaces of traditional Malay houses

Nabilah Zainal Abidin, Fawazul Khair Ibrahim, Raja Nafida Raja Shahminan

Pertanika Journal of Science & Technology, 2017;25(105):73-80.
MyJurnal

This paper describes the culture of Traditional Malays, in particular the use of sustainable furniture inside a Traditional Malay House (TMH). The sample houses for this study were retrieved from archived reports, from the Centre for Built Environment in the Malay World (KALAM), Universiti Teknologi Malaysia (UTM). Data collected were analysed using Componential Analysis for the presence of components (based on drawings of archival reports as well as photographic evidence from site visits). The findings showed that the Malays used a variety ofsustainable furniture in their houses. Additionally, their homes had built-in furniture, which indicated the houses were pre-designed based on its user.

Matched MeSH terms: Interior Design and Furnishings
Fulltext Gas concentration mapping and source localization for environmental monitoring through unmanned aerial systems using model-free reinforcement learning agents

Husnain AU, Mokhtar N, Mohamed Shah NB, Dahari MB, Azmi AA, Iwahashi M

PLoS One, 2024;19(2):e0296969.
PMID: 38394180 DOI: 10.1371/journal.pone.0296969

There are three primary objectives of this work; first: to establish a gas concentration map; second: to estimate the point of emission of the gas; and third: to generate a path from any location to the point of emission for UAVs or UGVs. A mountable array of MOX sensors was developed so that the angles and distances among the sensors, alongside sensors data, were utilized to identify the influx of gas plumes. Gas dispersion experiments under indoor conditions were conducted to train machine learning algorithms to collect data at numerous locations and angles. Taguchi's orthogonal arrays for experiment design were used to identify the gas dispersion locations. For the second objective, the data collected after pre-processing was used to train an off-policy, model-free reinforcement learning agent with a Q-learning policy. After finishing the training from the training data set, Q-learning produces a table called the Q-table. The Q-table contains state-action pairs that generate an autonomous path from any point to the source from the testing dataset. The entire process is carried out in an obstacle-free environment, and the whole scheme is designed to be conducted in three modes: search, track, and localize. The hyperparameter combinations of the RL agent were evaluated through trial-and-error technique and it was found that ε = 0.9, γ = 0.9 and α = 0.9 was the fastest path generating combination that took 1258.88 seconds for training and 6.2 milliseconds for path generation. Out of 31 unseen scenarios, the trained RL agent generated successful paths for all the 31 scenarios, however, the UAV was able to reach successfully on the gas source in 23 scenarios, producing a success rate of 74.19%. The results paved the way for using reinforcement learning techniques to be used as autonomous path generation of unmanned systems alongside the need to explore and improve the accuracy of the reported results as future works.

Matched MeSH terms: Interior Design and Furnishings
Fulltext Kenaf Fiber/Pet Yarn Reinforced Epoxy Hybrid Polymer Composites: Morphological, Tensile, and Flammability Properties

Suriani MJ, Zainudin HA, Ilyas RA, Petrů M, Sapuan SM, Ruzaidi CM, et al.

Polymers (Basel), 2021 May 10;13(9).
PMID: 34068794 DOI: 10.3390/polym13091532

The application of natural fibers is rapidly growing in many sectors, such as construction, automobile, and furniture. Kenaf fiber (KF) is a natural fiber that is in demand owing to its eco-friendly and renewable nature. Nowadays, there are various new applications for kenaf, such as in absorbents and building materials. It also has commercial applications, such as in the automotive industry. Magnesium hydroxide (Mg(OH)2) is used as a fire retardant as it is low in cost and has good flame retardancy, while polyester yarn (PET) has high tensile strength. The aim of this study was to determine the horizontal burning rate, tensile strength, and surface morphology of kenaf fiber/PET yarn reinforced epoxy fire retardant composites. The composites were prepared by hybridized epoxy and Mg(OH)2 PET with different amounts of KF content (0%, 20%, 35%, and 50%) using the cold press method. The specimen with 35% KF (epoxy/PET/KF-35) displayed better flammability properties and had the lowest average burning rate of 14.55 mm/min, while epoxy/PET/KF-50 with 50% KF had the highest tensile strength of all the samples. This was due to fewer defects being detected on the surface morphology of epoxy/PET/KF-35 compared to the other samples, which influenced the mechanical properties of the composites.

Matched MeSH terms: Interior Design and Furnishings
Beberapa Penyelesaian Berangka bagi Persamaan Resapan-Olakan dalam Ruang Dua Dimensi (Some Numerical Solutions for Solving Diffusion-Convection Equations in Two Dimensional Space)

Kaur H, Abdul Rahman Abdullah

Sains Malaysiana, 1996;25.

Some numerical methods for solving diffusion-convection equations in two dimensional space are formulated. Iterative scheme for each method is studied and numerical test to model problem is conducted. Comparison of methods is given in table form.
Beberapa kaedah berangka bagi menyelesaikan persamaan resapan-olakan dalam ruang dua dimensi telah dirumuskan. Skema lelaran untuk setiap satunya dikaji dan pengujian berangka kepada masalah model dilakukan. Perbandingan antara kaedah telah diberikan secara berjadual.

Matched MeSH terms: Interior Design and Furnishings
Determination of potential curves of Br2 in Franck-Condon's region

Janic ES, Butigan V, Novakovic JD, Lekic M

Sains Malaysiana, 2014;43:637-642.

The extinction of Br2 molecules in gas state is measured for different wavelengths of incident light in interval of 370 - 570 nm by method of gas spectroscopy. The measurement is made on the basis of Franck-Condon's principle, under which a transition to a more excited state is done without changing the intercore distance (in further text, R). The graph of energy dependence on extinction is drawn. On the graph are recognized two Gausses slopes and their separation (deconvolution) is done. The complete Gausses functions are determined on graph. The method of mirror symmetry is applied on Gausses slopes of extinction and symmetrical extinction values (Es) are obtained. Borders of Franck-Condon's area are determined from ground state of Linear Harmonic Oscillator (LH0). Tables of dependence on R and the excitation energy are given. On the basis of these tables are drawn potential curves of electron energy E(R) in excited electronic states of Br2 molecules as functions of R in Franck-Condon's area.

Matched MeSH terms: Interior Design and Furnishings

Filters

Please provide feedback to Administrator (afdal@afpm.org.my)

External Links