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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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A study of hydrogen storage in zirconium-containing NaY5.7 zeolite F. Mulana
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

The inclusion of metals/alloys inside the pores of zeolite is of a great interest for developing composites with functional materials distributed in the intended fields. Zirconium-containing NaY5.7 zeolite samples with 1 wt% and 3 wt% metal loading were prepared using impregnation method. The starting material was commercial available NaY5.7 zeolite and zirconocene dichloride ((C5H5)2ZrCl2)as zirconium source and benzene as solvent. The characterization of samples was performed by X-ray diffraction (Rigaku RINT2000) using a Cu Kα radiation, nitrogen adsorption isotherms, hydrogen sorption isotherms and heats of sorption by a twin-conduction-type calorimeter (Tokyo Riko Co., Japan) equipped with a volumetric adsorption system at 298 K. The X-ray diffraction pattern reveals that the framework structure of zeolite is retained in the calcination condition performed and the metallic form of zirconium exists on zeolite particles. The nitrogen adsorption isotherm for the zirconium-containing NaY5.7 zeolite was similar to that for the untreated zeolite which indicates that Zr-NaY sample retains its structure even after the heat treatment at higher temperature. The hydrogen sorption on Zr-NaY5.7 zeolite was brought about by a combination of formation of solid solution inside zeolite pores and hydridation of zirconium species. The inclusion of zirconium inside the framework of NaY5.7 zeolite has increased the amount of occluded hydrogen on all synthesized samples. NaY5.7 zeolite itself could occlude hydrogen approximately 0.097 mmol H2/gr at low hydrogen pressure of 80 kPa. Zirconium-NaY5.7 zeolite system, which resided zirconium nanoparticles inside the pores of zeolite, could be one of alternative composites to be used for hydrogen sorbing materials providing water resistance.
Fall risk among urban community older persons Mary J. T. Valera
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 elderly should be screened in the community for risk for falls. It impacts significantly on their ability to still be active and productive even during aging. This study determined the risk for falls among Philippine urban community-dwellers 65 years old and above. Participants were ambulatory elderly peopleregistered in a government centre in one city. Data collection was done by interviewing elders and assessing fall risk factors. Data analyses were done using descriptive statistics and SPSS version 16 was used to correlate variables. Fall risk predictive factor is age. 63.3% of the participants are categorized as young-old to middle old. Protective factor fall risk is being married and/or living with family, which is 65.3% of this group. Confidence level in performance and completion of tasks were measured by Activity-Based Confidence (ABC), which showed 71.5% has moderate level of confidence. However, confidence level isinsufficiently-proven by literature to predict falls. Depression is statistically significant related factor for falls and was measured by Geriatric Depression Scale (GDS). Results showed that 87.7% has mild depression. Functional mobility capacity of the participants, namely balance and gait, and flexibility were measured by Tinetti Balance and Gait Scores (TBGS) and Chair Sit-and-Reach Test (CSRT), respectively. TBGS yielded 46.9%, and CSRT yielded 67.3%, which is low risk for falls. Correlation between TBGS and GDS, and TBGS and ABC were arrived at by using Spearman Rho. It yielded a significant relationship (r = 0.358, p = 0.012) between balance and gait with a depressive state, and no significant relationship (r = -0.136, p = 0.352) between balance and gait with confidence level, respectively
Performance of multi-relay cooperative communication using decode and forward protocol . Nasaruddin; . Mayliana; . Roslidar
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

Nowadays, the development of wireless communication systems will be refer to user cooperative communication system in which a source information can transmit data to a destination through a relay. This can reduce the effect of fading on wireless communication channel which is a major problem in wireless communication system that can degrade the system performance. In this paper, we investigate the performance of multi-relay cooperative communication using decode and forward protocol in terms of channel capacity, bit error rate (BER) and throughput.  The use of decode and forward protocol in multi-relay cooperative communication offers cooperation among users to generate virtual multiple antennas to increase the channel capacity and also can give better system performance. Furthermore, the simulation model of the system and computer simulation is developed to evaluate the performance of multi-relay cooperative communication. The simulation result shows that the channel capacity increases as the value of signal to noise ratio (SNR) increases. Also, the channel capacity increases as the number of relays increases. Moreover, the performance of multi-relay cooperative communication performs better than a single-relay cooperative communication by using decode and forward protocol in terms of BER. Furthermore, multi-relay cooperative communication provides a good throughput of the system compared to a single-relay. Therefore,  the multi-relay cooperative communication is useful to mitigate the effects of channel fading, increase the channel capacity, improve the system performance and provide a good throughput by exploiting decode and forward protocol.
Vitellogenin dynamics and reproductive morphology at sexual maturity of Philippine Mallard (Anas platyrhynchos domesticus L) fed with zinc supplemented diet Arnolfo M. Monleon; Angel L. Lambio; Renato S. A. Vega; Severino S. Capitan; Carmelita M. Rebancos
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 vitellogenin (Vtg) is a precursor for the synthesis of egg yolk protein. Feeding with zinc-supplemented diet is hypothesized to increase the circulating Vtg thereby enhancing reproductive development. A total of 80 ducks,aged 16 weeks old, were randomly assigned to treatment groups; namely: group A with 40 ducks fed with 30 ppm zinc-supplemented diet (zinc positive) and group B with 40 ducks fed with no added zinc (zinc negative). Thecirculating Vtg at sexual maturity (155.11±10.83 days old) were determined from the blood sera. The sera were assayed for Vtg in duplicate using 96–well microplate and read the optical density at 415nm. The zinc concentrationof the samples was calculated using the nonlinear regression =OD = a x [Zn2+] / (b + [Zn2+]. Results show that the circulating Vtg in the blood sera of ducks at sexual maturity were 0.69±0.07 Gg Zn dL-1. The feeding of zinc-treateddiet had no significant influenced on the concentration of circulating Vtg. There was also insignificant difference in the reproductive morphology of ducks fed with or without added zinc. The Vtg concentration had no correlation withreproductive parameters but found to be positively correlated with liver weight (H=0.21) and negatively correlated with body weight (H = -0.24).
BIOSYSTEMATICS OF HOSPITALITERMES HOSPITALIS HOLMGREN (ISOPTERA) FROM BORNEO . Syaukani
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 4, No 2 (2014): Life Sciences
Publisher : Syiah Kuala University

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Abstract

This article redescribes Hospitalitermes hospitalis of open-air processional column termitesfrom Central Kalimantan, Borneo Indonesia.  In many publications, this nasute termite is one of very incomplete descriptions. Condition of head capsule and its coloration (soldier caste), mandibles and antennae (soldier caste) are importance characters identification work. This species showed a large variation of nesting sites and dimorphism of worker caste. 
Flavor of arabica coffee grown in Gayo Palteau as affected by varieties and processing techniques Yusya Abubakar; Abubakar Karim; Fachrizal Fahlufi
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

Coffee (Coffea sp) is one of the most popular drinks in Indonesia, as well as in the world. Coffee plantation has been grown in several areas in Indonesia, including Aceh province, and has become one of the most important plantation products with promising economic value. Both Arabica and Robusta are found in Aceh, however Arabica coffee grown more in the area because of its popularity in International market. This popularity is related to Arabica coffee distinctive flavor and aroma. To grow well, Arabica coffee requires land with altitude 1000 m or more above sea level. Therefore, in Aceh, it is grown in the Gayo Plateau with total area more than 90.000 hectares.  As International market requires higher standard coffee, there is a need to provide a better quality coffee with a better taste, flavor and aroma.  Several coffee varieties have been cultivated in the area for a long time, however the relation between variety and taste flavor has not been fully investigated. Other factors that may affect the taste, flavor and aroma is processing technique applied during postharvest and handling. Both wet hulling and dry hulling are practiced by small holders and farmers in the area. This study is aimed to investigate taste and flavor of Arabica coffee as affected by varieties and processing technique. The already grown varieties used in this study were Ateng Super (V1), Bergendal (V2), Bor-Bor (V3), Tim-Tim (V4) and Lini_S (V5). The processing techniques to be considered were Dry Hulling (TA) and Wet Hulling (TB). Observations to be recorded were organoleptic test (fragrance, acidity, body, flavor, aftertaste, balance), pH analysis and caffeine content. The result shows that the Tim-Tim variety get the highest organoleptic score, while between the two techniques, wet hulling provide a better acceptance from the panelist (get higher organoleptic scores)
The influence of physical parameters towards hyper cholesterol reducing agent production, lovastatin, under solid substrate fermentation (SSF) condition Syarifah A. Rashid; Darah Ibrahim; I Nyoman Pugeg Aryantha
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

Two potential substrates namely rice bran and unprocessed brown rice indicated positive result of lovastatin existence. Aspergillus niger SAR I, our local isolated fungus, took a responsibility to cooperate with those substrates in SSF system. Further experiment including initial profile production, effect of physical parameters (temperature, inoculum size and substrate quantity) and final profile production, were carried out. For initial profile, a basic condition of SSF which consisted 70% (v/w) of moisture content (adjusted to pH 6.0), 5 g substrates mixture (ungrounded size), 1x107 spore/ml of inoculum size and incubation temperature at 30±2 0C, was conducted in a flask system and fermented for 7 days. Those conditions allowed 160.03±3.79 mg lovastatin/g dry substrate of lovastatin production during initial stage. After a study of effect of physical parameters, it showed that the optimum temperature was still at ambient temperature (30±2 0C) and substrate quantity of 5 g but different inoculum size (1x105 spore/ml). Each parameters specifically temperature, inoculum size and substrate quantity produced 253.98±5.92 mg lovastatin/g dry substrate, 297.64±0.56 mg lovastatin/g dry substrate and 298.72±44.12 mg lovastatin/g dry substrate, respectively. Throughout the final profile, the production was 305.08±14.15 mg lovastatin/g dry substrate which made the total increment hit to almost 91%. In this experiment, lovastatin was subjected into high performance liquid chromatography (HPLC) with acetonitrile and phosphoric acid (pH 3.0) as a mobile phase.
The profiles of science and technology culture (STC) indicators A. Halim
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 3, No 2 (2013): Engineering
Publisher : Syiah Kuala University

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Abstract

Culture of science and technology is the way of life of the academic community that includes ways of thinking, understanding and use of technology, beliefs, habits, how to use the language, attitudes, and judgments based on scientific methods and knowledge. Survey of 10 indicators of science and technologyculture conducted to 467 high school students in Indonesia and 784 students in Malaysia. Based on 10 indicators, developed an instruments of Likert attitude scale and a multiple choice tests as a basis for indicators of science and technology culture. The survey results showed that students SM Malaysia andIndonesia have the same ability and views about; Knowledge of Science and Technology Basic, Understanding the limitations of human reason, and understanding of science and technology indicators, and the student chooses more amenable Science and Technology activities conducted outside school hours. Overall, the profiles of Science and Technology culture among students SM SM Indonesia Malaysia and there is no significant difference at the 1% significance level (t = 0:04). Based on the interpretation of the scalesuggested by Green Akey, the results of this study showed that the culture of Science and Technology indicators proposed in this study include both categories, namely 0.75 (high) Indonesian and 0.74 (high) Malaysian. Therefore it can be said that Malaysian and Indonesian students have a positive attitude towards Science and Technology. In the context of the Science and Technology Education, the results of this study provide some indicators that can be used as learning objectives in the curriculum of Science and Technology in the Secondary School
The Influence of MMP-3 towards MMP-9 among Emphysematous Patients from Gingival Crevicular Fluid and Sputum Mulkan Azhary; Muhammad Amin; Soetjipto Soetjipto; Mulyadi Mulyadi; Sunnati Sunnati
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

The elevated activity of matrix metalloproteinase (MMP)-9 has been responsible for degradation of extracellular matrix (ECM) within lung parenchyma leading to emphysema among patientssuffering from chronic obstructive pulmonary disease (COPD). Prolonged exposure of smokinghad triggered activation of both MMP-9 and MMP-3. Active MMP-3 might degrade numerous kinds of ECM and act as MMP-9 inducer as well. The study aimed to correlate active MMP-3 towards elevated MMP-9 activity from both gingival crevicular fluid (GCF) and sputum to assess breakage of extracellular matrix (ECM) among emphysematous patients. Fifteen emphysematous respondents suffering from COPD were recruited to undergo thoroughly physical assessment, spirometry, and radiological examination. Then, both GCF and sputum were collected for measurement of MMP-3 and MMP-9 activity. Results showed that MMP-3 activities were correlated positively and significant with elevated MMP-9 activities from both GCF and sputum i.e. r = 0.899 (p0.05) and r = 0.770 (p0.05) respectively. Smoking exposure released many radicals and oxidants generating elevation of MMP-3 activity which then influenced repeatedly influx of neutrophils and activation of MMP-9. The role of active MMP-3 also involved in either acute inflammatory or broad ECM breakage. Moreover, active MMP-9 might lead mainly the degradation of ECM within lung parenchyma. Because of similar effect and impact concerning ECM degradation, both active MMP-3 and MMP-9 might concurrently cause larger breakage of ECM leading to lung emphysema among COPD patients. This study showed that both GCF and sputum would be assigned to evaluate active MMP-3 and MMP-9 for assessing ECM degradation among emphysematous patients.
Design of prototype for online disaster multimedia data transmission based on Android . ROSLIDAR; YUDHA NURDIN; . NASARUDDIN
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 4, No 1 (2014): Engineering
Publisher : Syiah Kuala University

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Abstract

The development of information and communication technology application is growing rapidly. It has motivated the use of mobile devices for various social networking mobile services such as android based multimedia disaster information transmission. Disaster multimedia information is important for quick response and recovery phases of the disaster management. In previous work, an online disaster information system based on location (we called it ASIKonLBS) has been proposed. However, it was only providing the coordinate information of the disaster location by using short message service (SMS) gateway and global positioning system (GPS). In this paper, we propose the design of prototype for online disaster multimedia data transmission based on android. Such that, the ASIKonLBSv2 can provide not only the information of the location, but also the situation of the disaster area including news, picture, and video. The research method refers to a spiral model that begins with conceptual design, prototype development and evaluation. The result shows that the designed prototype can be implemented for online disaster multimedia data transmission (news, photo and video) using Android Developer Tools. Furthermore, the prototype can be installed in the android-based smartphone and map the disaster multimedia data onto the web of ASIKonLBS. Therefore, the proposed prototype is useful for the disaster agencies and practitioners in order to give the first aid for the victim in the disaster area

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