UMT Journal Universiti Malaysia Terengganu
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An Investigation of Kenaf Plant Fibers as Reinforcements in Interwoven Kenaf/Polyethylene Terephthalate (Pet)/Epoxy Hybrid Green Composites
No full textRenewable materials have some bearing on the environment and have since increased research works related to polymer composites. This work was conducted to investigate the effects of interwoven kenaf fibers and the use of kenaf fibers in composites. In this research, interwoven between kenaf and polyethylene terephthalate (PET) was prepared and epoxy was used as the polymer matrix to form composites. The kenaf fiber composites with various kenaf fiber contents (2, 5, 8, and 10 wt %) interwoven with (PET) fibers were prepared by using open mould method. The properties of kenaf/PET/epoxy composites (KPTE) were studied. The kenaf fiber composites characterization was determined based on their mechanical properties, water absorption, morphology and thermal properties. The tensile strength test was performed using Testometric machine. The finding shows that the strength increases as the amount of kenaf fibers in the composites increases. The composites with 10% kenaf fibers interwoven PET displayed the highest tensile strength (85.3 ± 2.9 MPa) while unfilled epoxy show the lowest tensile strength (64.1 ± 16.5 MPa). The addition of kenaf fibers minimally increases the water absorption up to about 1.4%. The increases of kenaf fibers also reduces the overall thermal stability of the composites compared to the PET and epoxy resin composites. The morphology properties of KPTE composites support the tensile properties surface of the composites. This study assists to propose the kenaf fibers as a potential filler for properties improvements in epoxy-based composites contributing to the development of another environment-friendly material
FORECASTING THE NUMBER OF AIRPLANE PASSENGERS USING BOX-JENKINS AND ARTIFICIAL NEURAL NETWORK IN MALAYSIA
No full textAirline industry is one of the largest industries in the world of transport because it is the most important transport in the global transport system. The airline industry has played a very important role in the economic development in Malaysia. Due to the increase in its operating business, the demand for air travel increases day by day. Hence, this study focused on the number of passengers using air transport in Malaysia. The monthly data from January 2005 to December 2015 were obtained from Malaysia Airport Holdings Berhad (MAHB) in Sepang, Selangor. The data is divided into 2 parts, which are in sample data from January 2005 to December 2014 and out sample data from January 2015 to December 2015. The study was conducted to predict airline passengers in Malaysia using the Box-Jenkins model and Artificial Neural Network (ANN) model. Both models were studied to choose the best model. Mean Absolute Percentage Error (MAPE) and Mean Squared Error (MSE) were used to measure the performance of both models. SARIMA was selected as the best model for Box-Jenkins with MAPE and MSE were 7.3458388 and 2.67011 respectively while Multilayer Feed Forward Neural Network (MFFNN) with seven input variables, with MAPE and MSE, 7.251 and 0.0006 respectively were selected as the best model for Multilayer Feed Forward Neural Network (FFNN). In conclusion, these studies have proven that the Multilayer Feed Forward Neural Network (FFNN) model is the best model for considering airplanes in Malaysia compared to the SARIMA model
The Potential of Solid Electrolyte from Fish Waste for Battery Application
No full textThis experiment was conducted to study the potential of solid electrolyte from the fish waste of Clarias gariepinus for battery application. The battery was one of the important components that supplies electrical energy to users throughout the world, and it strongly contributed to technology development in the economic sector, transportation, residential as well as agriculture. The presence of ammonia in organic fish waste could produce renewable energy and helped to reduce the use of lithium-ion batteries in modern industries. Two different parameters were being observed in this study, which was the quantity of fish and the number of the cell layer. The process of collecting the fish waste was carried out in the hatchery at Universiti Malaysia Terengganu using two methods, which were filtering and soaking. The result showed that the highest value of energy output was 0.430V from waste filtering of 50 fish and 0.207V from soaking in waste of 50 fish. Meanwhile, the lowest energy output was from the tank that contained ten fish with an energy output of 0.177V for filtering and 0.101V for soaking. Besides, for a different number of the cell layer, the highest value of energy output was 0.414V at 25 layers, and the lowest voltage was 0.175V at five layers. Thus, from the study was observed that the produced voltage was dependent on the quantity of fish and the number of the cell layer, when the quantity of fish and number of cell layer increases, the output energy was also increased
The Effect of Low pH Level on Zebrafish (Danio Rerio) Reproductive Performance
No full textDanio rerio or commonly known as zebrafish are a very popular fish among scientists and also a well-known vertebrate model species widely used in research. Zebrafish, are also a popular species among aquarists and have been put in aquariums all around the world as ornamental fish. The acid rain phenomenon has lowered the pH level of the wild habitat of zebrafish by shifting it to a more acidic pH level. This study was carried out to observe the effect of low pH level on the reproductive performance of zebrafish. The zebrafish were quarantined for a week to make sure they were healthy to be used in the experiment. The zebrafish were reared continuously for 14 days in three different pH treatments T1 (pH 2-4), T2 (pH 4-6), T3 (pH 6-8)). T3 (pH 6-8) was used as the control treatment. Hydrochloric acid (HCl) was used to control the pH level of treatments T1 (pH 2-4), T2 (pH 4-6), T3 (pH 6-8) with three replicates of each treatment. The male chasing female frequency was significant (p: 0.0001) and the data showed the highest frequency (2568.000±140.6272) at treatment 3 (pH 6-8). For the spawning frequency of zebrafish, treatment 3 (pH 6-8) showed the highest value (4.000±0.5774) followed by treatment 2 and treatment 1 and the data was significant (p: 0.0004). The fertilisation rate of the zebrafish was significant (p: 0.0001) and the highest was shown at T2 (pH 4-6) with 89.8018±0.3782, followed by T3 and treatment T1. For the hatching rate of the zebrafish, the data collected were significant (p: 0.0002) and the highest value of 2.9350±0.4070 was shown at T3 (pH 6-8), followed by T2 (pH 4-6) and T1 (pH 2-4). The overall result showed that pH 2-4 had the worst effect on the reproductive performance of zebrafish. Therefore, low pH has a significant effect on reducing the reproductive performance of zebrafish. The local fish population can be affected by the decrease of pH level due to acid rains and chemical waste pollution
Population Abundance of Red Palm Weevil, Rhynchophorus ferrugineus (Coleoptera: Dryophthoridae) in Rhu Tapai Coconut Plantation
No full textRed Palm Weevil (RPW), Rhynchophorus ferrugineus is a lethal pest which has been described as a serious pest that reduces the production of coconut tree and other major cultivated palms. RPW infestation was initially detected by Department of Agriculture (DOA) in 2007 in all eight Terengganu districts. Rhu Tapai plantation area is one of the highly infested areas in Terengganu. Until now, limited reports on population abundance of this lethal pest have been discussed particularly in Rhu Tapai. Therefore, a study on population abundance is a must in order to understand the population dynamic of RPW which will be the first step of its control strategy. A total of 12 traps were installed and synthetic pheromones (P028 Ferrolure+) were used in attracting the RPW adults. Overall, 81 individuals of RPW were successfully collected after 16 weeks of pheromone trapping (3rd September until 28th November 2018). The trend of weekly RPW captured was eventually decreasing from Week 1 to Week 16 but showed a sudden increment in Week 10. Pandan cultivar plot captured the highest number of adult RPW compared with Mawa cultivar plots. Result showed no significant difference between RPW sexes percentage of sexes which was 53% of male and 47% of female (1:1 ratio) (U= 0.143, p > 0.05). Daily rainfall and temperature significantly reduced the trapping efficiency (R²rainfall = 0.142, p = 0.145; R²temperature = 0.0858; p = 0.258). These results will be the baseline information for future study regarding control management strategy using pheromone-based mass trapping system
IMPACT OF MANAGEMENT POLICY ON DIRECT DRIVERS OF DEFORESTRATION IN MALAYSIA
No full textDeforestation is one of the incredible difficulties confronting mankind. The extraction of woods remains one of the main drivers of deforestation in Malaysia. Relatively, rising in timber values may lead to enlarge in the net advantages of clearing land. Thus, this study is written to assess the process and underlying causes of forest cover change in Malaysia from 1997 to 2016. After assessed the discusses it on the impact of direct drivers with different management scenarios on deforestation in Malaysia. The research design, data, and method also performed by using System Simulation Model. Model validation and sensitivity tests was carried out after the simulation model is implemented to check the correctness in line with the real system. The simulation analysis was carried out with three different simulation periods together with the impact of two main policies: (1) controlling threshold profit; (2) discounted rate. The result of the study indicates that the most suitable policy combination to manage the deforestation is scenario 2 (policy 2B) with the RM650 per/ha threshold profit coupled with interest rate r=4% within 50 years period
HOUSEHOLD FOOD SECURITY STATUS AND ITS ASSOCIATION WITH CHILD FEEDING PRACTICE AND CHILDREN’S WEIGHT STATUS AMONG LOW INCOME MOTHERS IN TERENGGANU
No full textFood insecurity is normally associated with lower socioeconomic status and improper feeding practices which may consequently affect growth and development of young children. This study aims to assess household food security status and its association with child feeding practices and children’s weight status among low income mothers in Terengganu. A cross-sectional study using convenience sampling was conducted at four public maternal and child health clinics (MCH) located in Terengganu. A total of 107 of low income mothers between ages of 18 to 45 years with net household income less than RM 3000 who has at least one child aged two years and above were recruited. The instruments used were Household Food Insecurity Access Scale (HFIAS), Child Feeding Questionnaire (CFQ) and weight-for-age child growth chart for children’ weight status at aged one year. Descriptive statistic and non-parametric tests were employed (SPSS 20). Majority of the households were food secure (85.0%). Yet, it is also important to note that about 15% of the household had experienced some degree of food insecurity. There was no significant correlation between household food security and all child feeding practice domains. Most of the mothers had children with normal weight (mean Z-score =-0.72+0.99). There was statistically significant association between household food security status and weight of children at one year of age (p=0.01). In conclusion, majority of the households experienced food secure. Household food security were associated with children’s weight status at early age but not correlated with parent’s child feeding practice
PHYSICOCHEMICAL PROPERTIES OF UNDULATED SURF CLAM (Paphia undulata) HYDROLYSATE AS AFFECTED BY DEGREE OF HYDROLYSIS
No full textThis study aimed to determine the physicochemical properties of undulated surf clam (Paphia undulata) hydrolysate as affected by the degree of hydrolysis (DH). Three levels of DH of undulated surf clam hydrolysate were prepared which were DH 36.57% (without any enzymatic hydrolysis), DH 58.25% (0.5% Alcalase®; 5 min; pH 7.5; 60ºC) and DH 91.26% (1% Alcalase®; 30 min; pH 7.5; 60ºC). After protein hydrolysis, the undulated surf clam hydrolysates were centrifuged, and their supernatants were freeze-dried. This study found that the protein hydrolysate with lower DH (DH 36.57%) gave lower protein content and higher ash and fat contents compared to other samples (DH 58.25% and DH 91.26%). However, the carbohydrate content is similar in all samples (16.56-20.04%). This study also found that foaming properties (29.43-67.50%), emulsifying capacity (11.94-110.52%) and peptide solubility (57.61-94.08%) were affected by the DH. As DH increased, the emulsifying capacity decreased, while peptide solubility increased. While the foaming capacity increased with increasing DH until it reached a maximum value and level off afterwards. For colour parameters, although there were differences between L*, a* and b* values for all three samples, a fluctuating pattern was noted with DH. DH also did not affect the water-holding and oil-holding capacity of undulated surf clam hydrolysate. This study shows that certain physicochemical properties of undulated surf clam hydrolysate can be tailored by adjusting the degree of hydrolysis
SELF – ESTEEM AND PERFECTIONISM AS PREDICTORS OF EATING DISORDERS AMONG UNIVERSITY STUDENTS
No full textThis study examined the predictive effect of self – esteem and perfectionism on eating disorders among university students. A total of 327 respondents (15.4% male and 84.6% female) participated in this research, recruited using simple random sampling method. Self – esteem was measured using Rosenberg Self-Esteem Scale, perfectionism was measured using Multidimensional Perfectionism Scale and eating disorder was measured using Eating Attitudes Test. There was a significant gender difference in eating disorders, t(376) = -2.909, p <.01, where female students are reported to have significantly higher eating disorder (M = 15.32, SD = 9.78) than male students (M = 11.431 , SD = 6.52). Confirming previous Western studies, regression analysis showed that both self – esteem and perfectionism predict eating disorder, in that, lower self-esteem and higher perfectionism increased the risk of eating disorders among university students. Preventive actions should focus on self-esteem and perfectionism as protective factors for eating disorders among people in this particular group
The Description of Nematode in Barbonymus schwanenfeldii at Kenyir Lake, Terengganu
No full textCucullanus sp is a genus of nematode infecting Barbonymus schwanenfeldii. It is categorized under Family Cucullunidae. The genus Cucullanus sp consists of various species around the world, parasitizing freshwater, brackish-water or marine fishes. Cucullanus sp are mainly found in internal organs like stomach, intestine, kidney, and spleen. This parasitic organism can cause an economic impact, especially for animals with high market value, which are commercialized and used for human consumption. The objectives of this study are to study the morphological characteristics of Cucullanus sp and to identify genus of Cucullanus sp which are found on tinfoil barb, Barbonymus schwanenfeldii at Kenyir Lake, Terengganu. There is not enough data on Cucullanus sp on B. schwanenfeldii. Six samples of tinfoil barb were collected at Kenyir Lake from 25 to 27 October 2018. Each sample of fish was measured and recorded for length and weight using ruler and weighing balance respectively. The fish were examined at camping site at Lawit Resort, Kenyir Lake. The nematode species found were brought back to Health of Aquatic Organism laboratory. The abdominal and gastrointestinal tracts of the fishes were dissected and placed in petri dishes. The nematodes found were collected and observed under the dissecting microscope. The nematode specimen was placed on a glass slide with a drop of lactophenol and observed under the compound microscope fitted with dino-eye. The sample was later fixed with 70% alcohol. The morphological characteristic was drawn using camera lucida fitted to a compound microscope. (40X magnification). The picture of nematode was captured by using Advanced Research Microscope (Nikon Eclipse 80i) and measurements of the nematode was also made. Hence, the nematode found was identified as male Cucullanus sp