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Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter
Published by Universitas Syiah Kuala
ISSN : -     EISSN : -     DOI : -
Core Subject : Education, Engineering,
Engineering Other
Arjuna Subject : -
Articles 402 Documents
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Testing of ethylene stimulation to enhance latex yield of Hevea brasiliensis clone RRIM 600 in Southern Thailand Thongchai Sainoi; Apirak Doungmusik; Sayan Sdoodee
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 2, No 1 (2012): Life Sciences
Publisher : Syiah Kuala University

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Abstract

Recently, latex price has continuously increased, This motivates rubber smallholders in southern Thailand to increase latex productivity. Then, ethylene stimulation has been introduced in tapping systems. Therefore, it needs to be tested before recommendation to the smallholder. An experiment was established at Thepa Research Station, Songkhla province. Rubber clone RRIM 600 (20 year-old) was used in the experiment. The experiment was designed as one-tree-plot design with 20 replicates.  There was 6 treatments: 1) 1/3S­ 2d/3 (C), 2) 1/8S­ 1d/3, 3)1/8S­ 1d/3 + RRIMFLOW (RF), 4)1/8S­ 1d/3 + LET (LET), 5) 1/8S­ 1d/3 + Double Tex (DT) and 6) 1/8S­ 1d/3 + Ethyphon 5% (E). The experimental period was during June 2010 to February 2011. It was found that the RF treatment provided the highest rubber productivity (137.7 g/tree/tapping and 5.9 kg/tree/year), and it was significantly different from the remaining treatments. According to latex diagnosis, sucrose in the RF treatment trended to decrease, but inorganic phosphate and thiol trended to increase.
Simulation of Continuous Bio-Reactor Rudy Agustriyanto
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 1 (2015): Engineering
Publisher : Syiah Kuala University

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Abstract

Dynamic study of bioprocess system plays a central role in bioprocess control. It is in fact on the basis of the time required for the development of the knowledge process that the total design, analysis and implementation of monitoring and control methods are carried out. Within the framework of bioprocesses, the most natural way to determine the models that will enable the characterization of the process dynamics is to consider the material balance of major components of the process. This article will present simulation results of continuous bio-reactor. The mathematical models for the bio-reactor based on the material balance had been derived (Riggs and Karim, 2006) and would be adopted in this study. Those model were solved and simulated using Matlab. It is found that the dynamic responses of the bio-reactor due to a step change in feedrate are first order.
Oral health-related quality of life among pregnant women at Hospital Universiti Sains Malaysia Ema Yunita Sari; Norkhafizah Saddki; Azizah Yusoff
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 1, No 1 (2011): Life Sciences
Publisher : Syiah Kuala University

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Abstract

This cross sectional study aimed to determine oral health-related quality of life in pregnant women. A total of 100 pregnant women seen at the Obstetrics and Gynaecology Clinic at Hospital Universiti Sains Malaysia participated in this study. The short version of the Malaysian Oral Health Impact Profile (S-OHIP(M)) questionnaire with five-point ordinal scale that ranges from ‘never’ to ‘very often’ was used to assess the frequency of oral impacts during the previous 12 months. The majority of the respondents were Malay (96.0%), with a mean age of 29.9 years (SD 5.78). The highest education level attained by most respondents was post-secondary qualification or Diploma (39.0%). Some had formal tertiary education (27.0%). The majority of them were income earners (74.0%) and contributed to the household income. Half of the respondents were in their third trimester of pregnancy while the remaining half was either in the first or second trimester. The severity of impact experienced by the women, which is the mean S-OHIP(M) score was high at 10.43 (95% CI = 8.96, 11.90). The prevalence of impact, which is the percentage of respondents reporting ‘fairly often’ or ‘very often’ to one or more impacts, was 36.0%. Common impacts experienced by the respondents include feeling uncomfortable because food got stuck in between teeth or dentures (22.0%), feeling that oral health problems had caused bad breath (13.0%), and feeling shy because of problems with teeth, mouth or dentures (9.0%). The results also demonstrated that neither the severity nor the prevalence of impact was influenced by the women’s socio-demographic background. This study concluded that pregnant women suffered from high impact of oral diseases that could affect their quality of life
Appearance, texture and flavour improvement of chocolate bar by Virgin Cococnut Oil (VCO) as Cocoa Butter Substitute (CBS) Eti Indarti; Normalina Arpi; Heru P. Widayat; Ashabul Anhar
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 3, No 1 (2013): Life Sciences
Publisher : Syiah Kuala University

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Abstract

The purposes of using CBS in this research is to improve the physical properties and quality of appereance and structure stability of chocolate bar. Based on chemical composition, CBS and Cocoa butter have different profile, but they have similar physical properties due to high lauric acid content. The advantage of lauric acid is to affect shinny appreance of chocolate surface, and also soapy taste that closely related to rancidity reduction. Virgin Coconut Oil (VCO) is one of lauric fat that easily found in Aceh. In this research, chocolate bar is formulated comprising various concentration of CBS (0,1,2,3,4,5%) with respect to cocoa butter, and cocoa mass composition (200 g and 300 g). It was found that melting point was affected by CBS concentration. The higher CBS concentration, the lower melting point of chocolate bar. An increase in VCO concentration reduced significantly the melting point of chocolate bar. Melting point was comparable to other chocolate bar commercial (29-32oC). The unblooming, snap, best texture and better taste was observed for the chocolate bar containing 4-5% of VCO concentration and 27,5% of cocoa mass
Anti-MRSA activity of Penicillium minioluteum ED24, an endophytic fungus isolated from Orthosiphon stamineus Benth Tong Woei Yenn; Darah Ibrahim; Latiffah Zakaria
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 2, No 1 (2012): Life Sciences
Publisher : Syiah Kuala University

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Abstract

Nowadays, the medical concerns with Methicillin-resistant Staphylococcus aereus (MRSA) arised when in 2009, the proportion of S. aureus isolates that are resistant to methicilin has increased to 59.5%- 64.4% in South East Asia. Hence a new antibacterial agent from natural source is necessary to combat the infectious diseases. This study aimed to investigate the anti-MRSA activity of the endophytic fungus Penicillium minioluteum ED24, which was previously isolated from the leaf of the medicinal plant Orthosiphon stamineus Benth, in Penang, Malaysia. Methanol was used to extract the freeze-dried fungal biomass of the 14-days old fungal culture. The extract showed very significant anti-MRSA activity of disc diffusion assay with the minimal inhibitory concentration of 31.3 mg/mL and minimal lethality concentration of 250 mg/mL. Besides, 50% growth reduction of MRSA was observed at 33.2 h at the concentration of extract at MIC and 26.7 h at concentration of 2MIC. The structural degeneration of MRSA was observed by using scanning electron microscope (SEM). The SEM micrographs showed that the formation of cavities were observe on the extract treated cells and the cell wall structure of the MRSA was collapsed after treated with the fungal extract. The results suggesting that the bacterial cell wall is the target of the antibiotic compound(s) present in the extract. These results reveal that the endophytic fungus P. minioluteum ED24 a is potential source of anti-MRSA compounds
Donor preparation for germ cell transplantation in giant gouramy: the viability of spermatogonia isolated from giant gouramy cold preserved testis Irma Andriani; Ita Djuwita; . Alimuddin; Komar Sumantadinata
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 2, No 1 (2012): Life Sciences
Publisher : Syiah Kuala University

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Abstract

The recent study has been conducted to develop testicular germ cell (TGC) transplantation as a tool for preservation and propagation of male germ-plasm from endangered fish species. In practice of TGC transplantation,recipient and donor cell may not be immediately available at the same time whereas the testis can not be survive longer when it is outside of the body. Therefore, preservation of testis tissue may be required before transplantation.The research was conducted to evaluate the viability of spermatogonia isolated from short term preserved testis. Testis was preserved in physiological NaCl solution at 4 oC for 6, 12, 24 and 48 hours. Testis were dissociated in 0.5% trypsin and 3% DNase 10 IU/8L in PBS (phosphate buffered solution) complemented with 5% FBS ( fetal bovine serum), 25 mM HEPES and 1mM CaCl2 to obtain testicular germ cell suspension. The testicular germ cells isolated from 24 and 48 hours preservation were performed in trypan blue staining dye (1:1) and the viability of spermatogonia were observed under microscope. The results showed that the viability of spermatogonia started todecrease significantly in 12 hours preservation (P0.05) and up to 48 hours preservation, cell viability was as high as 54,48±8,33%. In conclusion, preserved testicular tissue at 4oC still produced viable spermatogonia that areallowed to use as the source of donor cell for testicular germ cell transplantation of giant gourami.
Genetic Characterization and Estimation Variety Eight of Papaya Genotype Siti Hafsah; . Yusnizar; . Firdaus
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 2 (2015): Life Sciences
Publisher : Syiah Kuala University

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Abstract

Characterization and prediction of genetic diversity is one of the stages on the papaya plant breeding activities in obtaining the parent plant in accordance with a predetermined idiotipe. Karaktersasi doneafter exploration and germplasm collection is done. Currently the plant breeding laboratory studiesprogram Agrotechnology Faculty of Agriculture has some papaya genotypes were successfully collected is from the cross, a collection of some areas, collection of research centers Tropical Fruits IPB Bogor and Fruit Research Institute Solok. The general objective is to get a papaya plant breeding better varieties from existing varieties (new idiotipe). Papaya plant characteristics desired by idiotype is a strong plant, short stature and quick to bear fruit, tree hermaphrodite, not the formation of stamens karpeloid (imperfect) or  sterile, resistant to  pests and  diseases and  high production. Characteristics of preferred fruit is sweet, flavorful soft, smooth fruit skin, thick flesh is red, round cavity and its shelf-life longer. The study was conducted in Gardens Farmers in Saree Aceh Besar, using eight genotypes of papaya exploration results. Experiments using a completely randomized design were repeated three times. The parameters observed qualitative and quantitative characters on vegetative and generative phase. The results showed that genotype Calina have short stature and fast fruiting as well as high production potential. Merah delima genotype showed a slow germination and growth. From the eigth genotipe papaya tested showed high genetic diversity and high heritability. Therefore, the selection can be done in early generations
Computational fluid dynamics of crosswind effect on a flare flame . Wusnah; . Yunardi; Ilham Maulana; . Elwina; Novi Sylvia; Yazid Bindar
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 1, No 2 (2011): Engineering
Publisher : Syiah Kuala University

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Abstract

This paper presents the results obtained from the application of computational fluid dynamics (CFD) to modelling the crosswind effect on a turbulent non-premixed flame. A pre-processor software GAMBIT was employed to set up the configuration, discretisation, and boundary conditions of the flame being investigated.  The commercial software Fluent 6.3 was used to perform the calculations of flow and mixing fields as well as combustion. Standard k-ε and eddy dissipation models were selected as solvers for the representation of the turbulence and combustion, respectively.  The results of all calculations are presented in the forms of contour profiles.  During the investigation, the treatment was performed by setting a constant velocity of fuel at 20 m/s with varied cross-wind velocity and by keeping the cross-wind velocity constant at 1.1 m/s with varied fuel velocity.  The results of the investigation showed that the standard k-ε turbulence model in conjunction with Eddy Dissipation Model representing the combustion was capable of producing reliable phenomena of the flow field and reactive scalars field in the turbulent non-premixed flame being investigated. Other results of the investigation showed that increasing the velocity of the crosswind, when the fuel velocity was kept constant, significantly affected the flow field, temperature and species concentrations in the flare flame. On the other hand, when the velocity of the fuel was varied at the constant crosswind velocity, the increasing velocity of the fuel gave positive impact as it enabled to counteract the effect of crosswind on the flare flame
Statistical findings of time-based stable human aura S. Z. Nur Eliza; M. Muhazam; W.A. Wan Mat; A. A. Hardy; M. N. Elya; O. Ainsah; A. Miskon; M. Sharil S
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 3, No 1 (2013): Life Sciences
Publisher : Syiah Kuala University

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Abstract

Aura is an electromagnetic field located outside living things which has a number of vibrational energy waves in it. For human being, this vibrating energy waves are related to energy level of the mind, the individual’s emotion and physical. The measurement of this energy can be made indirectly usingbiomedical devices like biosensor instead of direct snapping by optical camera. The aura pattern of the individual involved can be monitored by video capturing of the output produced by the device. Since the subject’s feelings affect aura readings, his emotion will be put to a level as low as possible through a simplemeditation. The data however, will be captured even before meditation to see the changes in the aura pattern and to find if there is any convergence to a stable or a final stage aura. This is what we define as the pure or characteristic aura of the individual. The stable or pure aura might be a little different fromsession to session but within the statistically accepted range. A sample of 10 students regardless of gender had been taken their aura color and analyzed at solar plexus chakra. The personal details of them had also been taken. Some repeated and stable aura images had been observed. It is found that almost everyone has a stable aura regardless of how unstable his aura normally. In general, good students tend to have a more stable aura compared to those with lower academic performance
Evaluating the Thermal Condition of Electrical Equipment via IRT Image Analysis Mohd Shawal Jadin; Soib Taib; . Suriadi
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 2, No 2 (2012): Engineering
Publisher : Syiah Kuala University

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Abstract

The integrity of electrical power equipment is of paramount importance when itsupplies electricity throughout a facility. However, the reliability of the equipments will degraded after sometime, and appropriate maintenance has to be taken accordingly to avoid future faults. Infrared thermography (IRT) image analysis is a commonly used technique for diagnosing the reliability of electrical equipments. Conventionally, the analysis of infrared image is done manually and takes very long time for further analysis. This paper proposes an automatic thermal fault detection and classification system for evaluating thecondition of electrical equipment by analyzing its infrared image. First, the image is segmented to find the target region of interest (ROI). The detected regions which have the same region properties are grouped together in order to remove the unwanted regions. Finally, statistical features from each detected region are extracted and classified using the support vector machine (SVM) algorithm. The thermal condition of electrical equipments is evaluated based on qualitative measurement technique. The experimental result shows that the proposed system can detect and classify the thermal condition of electrical equipments.

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