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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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Heuristic algorithm for portfolio selection with minimum transaction lots . Afnaria; Herman Mawengkang
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

Portfolio selection problem was first formulated in a paper written by Markowitz, where investment diversification can be translated into computing. Mean-variance model he introduced has been used and developed because of it’s limitations in the larger constraints found in the real world, as well as it’scomputational complexity which found when it used in large-scale portfolio. Quadratic programming model complexity given by Markowitz has been overcome with the development of the algorithm research. Theyintroduce a linear risk function which solve the portfolio selection problem with real constraints, i.e. minimum transaction lots. With the Mixed Integer Linear models, proposed a new heuristic algorithm that starts from the solution of the relaxation problems which allow finding close-to-optimal solutions. This algorithm is built on Mixed Integer Linear Programming (MILP) which formulated using nearest integer search method.
Effect of planting density on morphological characteristics and yield components of soybean (Glycine maxL) cultivars Kayvan Shamsi; Soheil Kobraee
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

For the purpose of studying the effect of different densities on yield attributes and morphological characteristics in three cultivars of soybean (Glycin max L.), an experiment on research field; Islamic Azad University, kermanshah was performed in 2007-2008. This factorial experiment of research was carried out 3 replication and in the form of the randomize complete blocks design. Cultivars factor were placed in the blocks at 3 levels including M7, M9, and Gorgan3 and density factors at 3 levels including plant were placed on 3, 5, 7 (cm) intra rows spacing in the blocks. The results showed that with increasing density, number of node per plant, number of pod per plant, number of grain per plant and numbers of branches were decreased. The most number of pod per plant and 100 grain weight was observed at the M7 cultiva.The highest number of branches relate to7cm intra rows spacing and the M7 cultivar had highest yield on 3 cm intra row spacing
Partial genomic characterization on potentially new bacteriophage: New addition to ICTV database? Dharmela Sellvam; Yahya Mat Arip
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

A small infectious micro-organism that able to replicate only inside the living cells is named as viruses, which are also the most abundant life form on the earth. These subcellular organisms can be classified into four groups ; animal, plant, archaea and bacteria viruses. Among them, bacteria viruses or also known as bacteriophages have the highest numbers with the  total estimation of 1031 .  The fact is that, until today only ~ 6,000 types of phages have been discovered since 1959 (ICTV report, 2011). Therefore, there are lots of new phages waiting to be discovered. Partial genomic studies have been conducted on a potential new bacteriophage isolated from goat faeces. Thus, to fulfil the objective of this study genomic characterization was carried out to discover more genomic details in order to reveal the true identity of the newly isolated phage . As first part of the analysis, phage genome was extracted to identify the phage's genome type and to estimate the genome size. Along with that, the extracted genome was used to proceed with the genome profiling and also for  partial genome sequencing analysis. Based on the genomic analysis, the results showed the isolated phage carries DNA as it genetic material with the size of genome around 30-40kbp. Besides that, this phage produced different genomic profile in comparison with other known phages such as Lambda, T4 and T7 phages when digest with the same restriction enzymes. Besides that, based on partial genome sequencing and results run against NCBI database, this newly isolated phage might be related with another newly isolated phage known as Sodalis phage SO-1. As far as the genomic data collected, an assumption can be made that this isolated phage could be a new addition to the list of viruses in International Committee on Taxonomy of Viruses (ICTV) database.
Colonization Ability of Biological Control Agent Tricoderma spp on Cocoa Pod and Seedling Rina Sriwati; Tjut Khamzurni; Elvira Iskandar; Mitra T. A. Lestari
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

Some  of Trichoderma species  as  antagonistic  fungi  are  usually  considered  soil  microorganism, They  colonize  plant  roots,  some- times  forming  a  symbiotic  relationship.  Three  species  of Trichoderma (T. virens, T. harzianum and T. asperellum) have been inoculated on cacao seedling and  cocoa  pod. Trichoderma species  can  be  re-isolated  from  surface  sterilized  cacao  seedling, including the stem and leaf, root, and pod then observed their colonization ability. Fungal hyphae were observed under the microscope emerging from the leaf, steam, root of seedling and pod as soon as 1 day after their isolation from surface sterilized cacao seedling and pod. All Trichoderma species  were  able  to  enter  and  make  colonization.    The  highest  percentage  of  colonization occurred  in  the T.  harzianum by  73.3%  (leaves),  46.7%  (trunk)  and  86.7%  (roots).  While colonization  on the  skin  cocoa  pod  (epidermis)  also  has  a  different  percentage,  the  highest percentage indicated in the treatment of T. harzianum by 63.3%. We conclude that T. harzianum better  biological  control  agent  base  on  their  ability  to  colonize  all  part  of  seedling and  pod. Trichoderma species into the cacao stem, leaf, root and pod allowing systemic colonization of this tissue.
Applying genetic algorithm on power system stabilizer for stabilization of power system Arnawan Hasibuan; . Syafrudin
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 the genetic algorithm method is used in Power System Stabilizer (PSS) for power system stability is discussed. Parameters of PSS on generator system in a state determined offline using genetic algorithms and the objective function is based on eigen value system was described in detail. PSS parameters and the location is calculated to maximize damping performance in different operating conditions. Genetic algorithm is a kind of random search algorithm based on the mechanism of natural selection and natural genetics. Genetic algorithms are used as search parameters of the PSS technique, which utilizes genetic operators to find the nearest optimal solution. An advantage of the search with the GA is not trapped in an early convergence 
Self regulation of single mother having child with autism in Banda Aceh Sitti Wahyuni
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

Self-regulation is needed in every individual, especially the single mothers who have child with autism. Good self-regulation of the single mother who have child with autism will have an important impact in helping children with autism to growing well. The research objective is obtaining the dynamics of selfregulationin the single mothers who have child with autism in Banda Aceh, by used qualitative research methods to the two respondents of research. Collect data by interviewing the respondents for ± 1.5 months. Analyze the data using the analysis case of per-respondent in narrative description. The research showed each respondent had different self-regulation, it is caused by differences in the chronology of case that has happened, differences in feelings of each respondent to accept this case, and differences in interpretation by each respondent in this case.
Enhancing the Solubility of Indrapuri Clay (Local “Kieserite”Fertilizer) M. Adlim; Zarlaida Fitri; . Sulastri; Ratu Fazlia Inda Rahmayani; Yuliza Laini
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

Study on enhancing the solubility of clay containing magnesium of localproduction (Indrapuri) has been conducted. The clay is commercially available and named as “kieserite” produced by local companies. The sample was taken randomly from fertilizer shops and analysed with AAS and XRF methods. XRF data of local kieserite showed the dominated chemical content; MgO(33.19%); SiO2(33.11%); CaO(1.90%);Al2O3 (5.77%) and Fe2O3(6.32%). The MgO content is higher than that of magnesium sulphate monohydrate (CAS No.: 14168-73-1) which is only 28%. The concentration of soluble magnesium ions of local kieserite naturally soluble was 0.0186% which is very low compared with the soluble magnesium of magnesium sulphate monohydrate (CAS No.:14168-73-1) which is 25%. The Enhancing the magnesium solubility was done by soaking the local kieseriteinto 0.1-0.5M HNO3 before neutralized with NH4OH or mixing the local kieserite with in alluvial, entisol, red-yellow-podsolik (RYP) soils with and without addition of 0.1-0.5M of (NH4)2SO4. The amount of dissolved magnesium of kieserite was found morein entisol soil than the other type of soils. The concentration increased up between 0.59-1.00% along with the incrementof (NH4)2SO4 concentration (0.1-0.5 M). Both in entisol soil and in 0.1 M of (NH4)2SO4, the dissolved magnesium ion increased up to 0.825% but decreased at higher concentration of (NH4)2SO4
Effect of host diets on host preference and host suitability in Telenomus parasitoid (Hymenoptera: Scelionidae) . Husni; . Jauharlina; . Karmisah
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 3, No 3 (2013): Addendum
Publisher : Syiah Kuala University

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Abstract

Telenomus sp. is one of the most important biological control agents for several Hemipterous and Lepidopterous  insects.  This study was performed to determine the effect of host diets on host preference and host suitability in Telenomus parasitoid.    In this research, the hosts (Nezara viridula) was reared on the different diets, i.e. Vigna sinensis, Phaseolus vulgaris, and Indigofera suffruticosa.  The result of this experiment showed that the parasitization level of Telenomus sp was not affected by host diets.  However, host diets affected on the percentage of the parasitoid offspring. The percentage offspring was 96%, 81% and 44% from host fed on I. suffruticosa, V. sinensis,and P. vulgaris, respectively. The offspring for all of treatments was biased to female (more than 70%), however it was not affected by host diets. The developmental time for immature stage of Telenomus was also affected by host diets, it was 12, 13 dan 14 days from host fed on I. suffruticosa, V. sinensis,and P. vulgaris, respectively.  These results indicated that I. suffruticosa more suitable host diet for the development of  Telenomus progeny, which may due to more riches nutrients contain in this plant than the other plants.  
Photocatalytic oxidation in phenol removal using Ru/TiO2 and Ru/Al2O3 catalysts Syaifullah Muhammad; Edy Saputra; Shaobin Wang
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

Ru/TiO2 and Ru/Al2O3 catalyst have been synthesized using impregnation method followed by calcinations at temperature of 550 0C. The synthesized catalysts were characterized by XRD, SEM and EDS. Based on characterization result, the active phase of Ru in form of RuO2 was well coated and dispersed on the support surface. The catalysts were then used in photocatalytic oxidation of phenol in the presence of peroxymonosulphte (PMS) as an oxidant and UV-light from Mercury lamp which is categorized as UV-C, with wave length in range of 200-280 nm. Both catalyst are effective for application of photocatalytic oxidation of phenol in the present PMS and UV. Further, activation of PMS for the production of sulphate radicals for phenol degradation in this study is generated by the interaction PMSCatalyst and PMS-UV. The photocatalytic catalyst of Ru/TiO2 and Ru/Al2O3 can increase the removal efficiency of 10-15%. The activity in phenol removal of Ru/TiO2-PMS-UV is slightly higher than Ru/Al2O3-PMS-UV. Both catalysts also showed good performance in the second and third runs after regeneration for multiple uses. Kinetic studies showed that phenol oxidation on the catalysts, Ru/TiO2 and Ru/Al2O3 in the present of PMS and UV follows the first order reaction.
Helminthiasis prevalence in brick makers at Lambada Peukan Village, Aceh Besar Region, Indonesia Dedy Syahrizal; Cut Mustika; . Ikhsan; Mulkan Azhary
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

Helminthiasis are the common health problem in the develop country. WHO prediction  400 million people had infection of helminthiasis. Soil is the usual media to transmitted helminth to human (soil transmitted helminthiasis). One of the rule worker that has hard contact  to helminth is the brick maker. This activity usual doing with convensional technique.The objective of  this devotion are to knowing helminthiasis prevalence on brick maker in Lambada Peukan Village. The primer data is the count of helminthiasis that get from feces examination in laboratory. This result overgo to promotive, preventive and curative activity.The helminthiasis prevalence in Lambada Peukan is 37,5%. To resolve this problem we doing the preventive and curative activity with giving albendazole preparat and Ferrum. Beside that we also make education activity to the workers. The aim of this activity is to increase need and ability of  the worker  to maintance from helminthiasis. The workers who in participated in this programme had having positive response that they want  to participated in all off this programme. 

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