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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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Fatigue Correstion Behavious of AISI 304 Stainles Steel in 3.5% NaCl Solution Herdi Susanto; M. Ridha; Syifaul Huzni
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

Failuredue to corrosion fatigue is a phenomenon that often occurs in thestructure associated with a corrosive environment. Stepuse ofmaterialssuch as AISI 304 stainlesshas been done, buta failuredue to corrosion fatigue phenomena still occur and can not be understood and explained by the experts. This study focused on assessing changes in behaviorof AISI 304stainless steelareexperiencingrepeatedloadingincorrosive environment. The behavior changes observed with fatigue testing in laboratory air and 3.5% NaCl solution, using a fatigue testing machine typerotary bending, specimens weremadeaccording to ASTME-466 andASTMF-1801 for corrosionfatiguetesting.Fatigue testing presented in S-Ncurve and fracture patterns observed, observed in3.5% NaCl solution and constantstress 369.53 MP apitgrowth measurements done on sevenl evels and four levels of cycles for corrosion potential and current measurements a represented in the polarizationcurve. The results showe dthat the endurance limit of the laboratoryair environment at stress 323.34MPa and 3.5% NaCl solution decreases, up to stress 277.15 MPa at1.7x107cycles. Ductile fracture pattern is in the airand 3.5% NaCl solutionis brittle. Pits and cracks growth, failure is dominated by crack propagation and increase the number of cycles resulting in decreased surface potential and corrosion current density increases.
Non-destructive method for maturity assessment of Indonesian’s mangoes by NIRS spectroscopy Muhammad Ikhsan Sulaiman; Agus Arip Munawar; . Ichwana
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

Rapid and non-destructive method to determine maturity quality of mangoes accurately has played an increasing role in the fruits supply chain involving automation. Diffuse reflectance spectra (R) and absorbance spectra (Log 1/R) in the spectral range from 900 to 1400 nm were measured using NIRS spectroscopy at three different points of 257 Indonesians mangoes cultivar arumanis, manalagi, gadong, gincu and golek of different ripeness indices. Through principle component analysis (PCA) and cluster analysis (CA) of the absorbance and reflectance spectra, cultivars can be differed with an accuracy of 99.8%. Multiple linear regression was applied to develop calibration models from mangoes with soluble solid content ranged between 5.5 and 13.5 % Brix and firmness ranged between 0.25 and 4.50 kgf. Log 1 /R calibration model could assess the soluble solid content and firmness of the mangoes with higher accuracy than R model with the coefficient of determination of 0.96 and 0.93, respectively. Results showed that NIRS spectroscopy has the feasibility to be employed in the maturity measures of Indonesian’s mangoes.
Electrocoagulation Application in The Processing of Palm Oil Mill Effluent from Anaerobic Fixed Bed Reactor Farida Hanum; Rondang Tambun; M. Yusuf Ritonga
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

The production of Crude Palm Oil (CPO) in Indonesia keep increase following the amount of wastewater that being produced. Therefore laboratory scale research of processing of palm oil mill effluent of anaerobic fixed bed reactor with electrocoagulation technique was conducted. Electrocoagulation is a process of coagulation using a direct current through an electrochemical events are symptoms of electrolyte decomposition. This research aims to determine the influence of voltage in the adaptor to the performance of this electrocoagulation system and to determine the optimum operating time for the liquid waste treatment. The material that being used is palm oil mill effluent with electrocoagulation equipment devices with the discharge of 1.5 liters/minute, the residence time of wastewater at 1 hour, 5 cm electrode spacing, as well as the strong current of 8, 9, 10, and 11 Ampere. The results obtained by the reduction in COD (Chemical Oxygen Demand) at the highest voltage of 9 volts at 120 minutes of operating time 95,76%, the reduction of TS (Total Solid) obtained at the highest voltage of 10 volts at 90 minutes of operating time 24,41%, the reduction of TSS (Total Suspended Solid) the highest obtained at the operating time of 180 minutes and a voltage of 10 volts give the rejection 91,78 %.
Is vaginal breech delivery safe option?: Analysis of 50 vaginal breech delivery in Zainoel Abidin and Ibu Anak Hospital Banda Aceh in 2011 Eva Febia; Mohammad Andalas
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

There were conflicting results about the success of vaginal breech delivery. Descriptive data about the success of vaginal breech delivery was needed in every institution. This research was conducted in Zainoel Abidin and Ibu Anak Hospital, Banda Aceh in order to analyze the success of vaginal breech delivery as well as the outcome of mother and babies. There were 50 vaginal breech deliveries in Zainoel Abidin Hospital during the study. The success of vaginal breech delivery was determined by the outcome of babies, the perinatal mortality and Apgar score of the babies. Vaginal breech delivery was more likely successful for babies whose birth weight 2000-3000 grams, between 35-40 weeks of gestational age, and singleton. Factors support the increase likelihood for the success of vaginal birth were adequate amniotic fluid, multiparity, and previously bigger baby that was delivered vaginally. We conclude that factors contribute the success of vaginal breech delivery were influenced by the birth weight, gestational age, parity, and amniotic fluid volume. However, since the number of subject was limited, further study with bigger sample size was needed
Microorganisms on surface culture of injection port of IV sets and its implication to infection control Gloria S. E. Coyoca; Verna S. A. Ardiente; Loida J. R. Beniga; Dennie Kate Pasco; Jessa M. O. Yuson
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

Nosocomial infection is a disease caused by a pathogenic agent that is acquired during a patient’s hospitalization or treatment inside another health care facility. The said infection can be caused by microorganisms. These microorganisms may already be present in the patient's body or may come from the environment, contaminated hospital equipment; An intravenous (IV) set used during IV therapy is one example of the possible materials containing these microorganisms. The main purpose of this study is to determine the presence of microorganisms on injections ports of IV sets before and after disinfection whenadministering IV medications in the patients admitted to the medicine wards of Hospital X and Y. Presence of microorganisms despite disinfection may pose risk to patients through the entry of bacteria upon injection through the port. Thirty swab samples were obtained from each hospital. Swab samples were then isolated on nutrient agar plates. Hospital Y samples yielded no bacterial isolates whereas all 30 samples in Hospital X showed bacterial isolates. Swab samples underwent gram-staining to distinguish between gram-positive and gram-negative bacteria. Streptococcus species and Staphylococcus species which are classified as grampositive bacteria were among the bacterial species identified before and after disinfection and were found on all the samples obtained from Hospital X. Based on the findings of this study, adherence to infection controlprocedures were not well established to reduce or eliminate microorganisms on injection ports in Hospital X that may cause Nosocomial infections. In line with these, it is highly recommended that proper infection control and maintenance procedures should be strictly enforced to reduce, if not eliminate themicroorganisms on injection port which are possible causes of Nosocomial infections and may threaten thempatients’ health
Investigation of calcium-phosphate in diet and digestibility of red tilapia N. Eriyusni
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

Investigation of calcium-phosphate and digestibility in Red tilapia was investigated. All diets were formulated at 0.5% calcium-phosphate in Diet1, 1.0% in Diet2 and 1.5% in Diet3, and was formulated to be isonitrogenous of 30% crude protein and energy: protein ration 30:2. The apparent digestibility coefficient of levels of calcium-phosphate were significant differences (P0.05) in faeces in upper and lower intestine. However digestibility of calcium and phosphorus in faeces in upper and lower intestine was higher in Diet2 with a value of 73.48 ± 0.33% and 70.54 ± 0.33%, 39.24 ± 0.02% and 43.73 ± 0.50%. Deposition of calcium and phosphorus was higher in Diet2 with a value of 9.03 ± 0.12% and 10.68 ± 0.24% in whole body, 10.17 ± 0.05% and 13.32 ± 0.41% in muscle, 13.06 ± 0.13% and 12.05 ± 0.01% in bone, 11.06 ± 0.47% and 10.01 ± 0.01% in scale and 6.01 ± 0.58% and 4.10 ± 0.58% in gill. The absorption gain of calcium and phosphorus were also higher in Diet2 with a value of 3.07 and 1.39% in whole body, 1.96 and 2.11% in muscle, 1.25 and 1.48% in bone, 0.97 and 0.89% in scale and 0.16 and 1.85% in gill. The overall digestibility was found to be higher in Diet2 with containing of 1.0% calcium phosphate and 30% crude protein compared to other diets.
Integrated pest management practices for rice crops: Review of Indonesia and Taiwan Husnawati Yahya; Kwok-Ching Wong; Ping-Shih Yang
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

One of the new strategies to control rice pests that are at the same time more environmentally friendly is integrated pest management (IPM). IPM employs such methods as biological and mechanical controls, and botanicalpesticides. National and international resources have been used to developed IPM programs in some countries. Indonesia and Taiwan have used such programs to control rice pests. Biological control, botanical pesticides andsome mechanical control have been conducted in IPM program in both countries. However, assessing and comparing the effects of IPM programs are difficult because of the heterogeneity of the data due to differences in regions (e.g., climate, rainfall, soil structure), time periods, pest classes (e.g., insects, plant pathogens, weeds), and types of crops researched. In Indonesia using the recommended pesticides still be the last option for controlling the pests that reach an economic threshold. In 2011, recommended pesticides are applied about 981,628 ha of all rice crops. Other controls are the second pests control choosen in Indonesia. Other controls are consists of biological control (usingparasitoids and predators), microbial control (fungi, virus and bacteria) and natural plant extraction. Other controls reach about 464,854 ha of total rice crops in Indonesia. Mechanical controls are less applied than recommendedpesticides and other controls. Mechanical controls are including all controls before rice planting, such as harrowing land, killing rats, applying organic fertilizer, planting good varieties and cropping pattern. Mechanical controls reach about 84,920 ha of total rice crops in Indonesia. Taiwan also have similar development of rice IPM like Indonesia. In different counties, the farmers applied different IPM techniques. More farmers are independent to set up their rice pest control. Now, Taiwan have a significant progress in organic rice
The Increasing of N, P, and K Nutrient in Palm Oil Under Prenursery Seedling By Application of Palm Oil Waste Compost and Endofitic Microbes Hamidah Hanum; Lisnawati Lisnawati; Ahmad Rafiqi Tantawi
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

Improvement of palm oil   nutrient  status  since at the nursery is one of the efforts to improve plant resistance to Ganoderma attacks. Compost from palm oil waste and potentially endophytic microbes could  potentially  increase  plant  nutrients,  especially  N,  P  and  K.  This  study  aims  to  determine  the potential of oil palm waste compost and endophytic microbes in increasing N, P and K in the plant oil palm under  prenursery seedling. The study was conducted in a factorial experiment with the factors tested  were  types  of  compost,  type  and  time  of  endophytic  microbial  inoculation.  Research  results indicating  that  the  levels  of  N,  P  and  K  plants  are  not  affected  by  the  main  factors  and  factor interactions of three factors. The concentration of of N, P, K soil is influenced by the interaction effect of two factors. The empty fruit bunch compost enriched every type endophyte showed better effects than  compost  midrib  in  increasing  levels  of  P  and  K  nutrient  in    plants  and  plant  growth  The application  endofitic  microbe    after  and  before  Ganoderma  application      inreased    phosphor  and potassium in plant and growth plant.
Comparison study towards an old Acehnese fara’idh table Salmawaty Arif
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 paper aims to present the process of preliminary study on Acehnese manuscript about fara’idh. The script presented the law in the form of a compact table, written in Jawi script and Arabic. The research studied the table formation and filled it with the content of another fara’idh table from the current reference. This step was done to do the comparison of the two tables to get insights of the old table before further investigation about its mathematical properties. Previous investigation showed some differences in the writing of parts of the tables. This research continued to see the differences of the whole tables. Further purpose is to re implement the usage of the table in Acehnese daily use as well as broader advantage
Analysis of Centelloside of Pegagan (Centella asiatica) Noverita S. Vinolina; Narendra Singh; Justin A. Napitupulu; Luthfi A. M. Siregar; Marline Nainggolan
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

Centella asiatica is still categorized as a wild plant that has not undergone domestication. Sustainability of medicinal and aromatic plants for sustainable harvesting of medicinal plants so that it is not only in nature but also the harvest of cultivated so obtained uniform quality. Chemical constituents arealready known: contain some saponin compounds, including asiaticoside, madeccasoside and asiatic acid. This study aims to determine the bioactive content; asiaticoside, madeccasoside and asiatic acid on the top(leaves and petiol) and bottom (roots and tendrils) with HPLC method. The experiment was conducted in growth chamber Department of Biological Sciences and School of Pharmacy Auburn University, USA. This study conducted in September-December 2011. The materials used are Centella asiatica of Deli Serdang accession, Kabanjahe accession, Berastagi accession and Samosir accession. Equipment needed to support the growth chamber study were digital scales, plastic pots, HPLC system types waters alliance 2695 autosampler, 996 photodiode array detector, coulomb adsorbosphere C18 5μ, size 250 x 4.60 mm, UV absorbance, wavelength of 210 nm, flow rate 1.8 ml / min, injection volume of 20 mL, Empower Pro software, and others. The results that the pattern of centelloside (asiaticoside, madecassoside and asiatic acid), when the content of one of the high content of bioactive, the others bioactive will be lower or biosynthetic pattern toward a compound needed. Centelloside plant age affects the content of Centella asiatica. Centelloside pattern is influenced by the condition of the planting medium, very high levels of phosphorus, biosynthesis of centelloside more toward to asiaticoside.

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