Ternate, Indonesia
Ternate, Indonesia

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Cipta I.,Khairun University | Limatahu N.A.,Khairun University | Hayatun S.,Khairun University | Kartini I.,Gadjah Mada University | Arryanto Y.,Gadjah Mada University
Asian Journal of Chemistry | Year: 2017

Effect of allophane from Gamalama volcanic soil to the properties of BiOI-Allophane had been studied in this work. Composite of BiOIallophane from Gamalama volcanic soil has the potential to be applied as a photocatalyst or photofuel under visible light radiation. Increasing the amount of allophane increase the surface area of 30.122 to 63.240 m2 g-1. Eg value of the resulted composite vary from 1.6-2.4 eV due to the various allophane amount.

Umar,Sepuluh Nopember Institute of Technology | Umar,Khairun University | Firdaus,Sepuluh Nopember Institute of Technology | Ashari M.,Sepuluh Nopember Institute of Technology | Penangsang O.,Sepuluh Nopember Institute of Technology
Proceeding - 2016 International Seminar on Intelligent Technology and Its Application, ISITIA 2016: Recent Trends in Intelligent Computational Technologies for Sustainable Energy | Year: 2016

DGs Technology has become the center of attention of the researchers and engineers because it is considered as an appropriate solution to overcome the shortage of electricity supply and power quality problems. DGs placement in appropriate locations with the right type and size is a challenging issue. This research discusses the simultaneous placement and sizing of multi-types of DGs in unbalanced radial distribution systems for power loss reduction and voltage deviation improvement while maintaining harmonics at the standard limit. The optimizations are performed simultaneously on three parameters; the locations, the types and the sizes of DGs. Genetic Algorithm (GA) is employed to ensure the optimal point is reached. The proposed method is applied on Kaliasin East Java radial distribution systems. The results show that the placement of four DGs type III are the most effective in reducing power loss and voltage deviation than the other scheme of optimization. The size of each DG is 175 kW+166.25 kVar. The active power loss reduction is 51.16%. All of individual harmonic (iHD) and total harmonic distortion (THD) are below the standard limit. © 2016 IEEE.

Umar,Sepuluh Nopember Institute of Technology | Umar,Khairun University | Firdaus,Sepuluh Nopember Institute of Technology | Penangsang O.,Sepuluh Nopember Institute of Technology
Proceeding - 2016 International Seminar on Intelligent Technology and Its Application, ISITIA 2016: Recent Trends in Intelligent Computational Technologies for Sustainable Energy | Year: 2016

The allocation of local active and reactive power in distribution systems is very important to meet customer demand and maintain the quality of electrical energy. Power loss and voltage deviation can be minimized by placing Distributed Generations (DGs) or Shunt Capacitor Banks (SCBs) in the right places and with the appropriate size. This paper discusses simultaneously placement and sizing of multiple DGs and SCBs in unbalanced distribution systems for power loss and voltage deviation reduction while maintaining harmonics at the IEEE-519 standard limit. Real Coded Genetic Algorithm (RCGA) is employed to determine the location and size of SCBs and DGs. The proposed method is applied on Modified Kaliasin radial distribution systems. The results show that the placement of the DGs on the bus 7, 8, 9, 10 is the most powerful results in reducing losses and voltage deviation compared to the other scheme. Placement 4 DGs with the size of each is 135 kW reduce the active power losses of 35.80% and the reactive power of 35.81%. The minimum bus voltage before and after placement DGs are 19.906 kV and 19.928 kV respectively. © 2016 IEEE.

Tamalene M.N.,Khairun University | Al Muhdhar M.H.I.,State University of Malang | Suarsini E.,State University of Malang | Rohman F.,State University of Malang
Medicinal Plants | Year: 2016

The world population, especially in developing countries, depends on medicinal plants for basic health treatment. In Indonesia, 55.3% people uses traditional herb for their health treatment and 95.6% admits that traditional herb used is valuable for their health. Obelo Dalam (Togutil) ethnic group is one of remote ethnic groups in Indonesia practicing traditional medicinal treatment using medicinal plants. Until now, there is no specific identification on the medicinal plants used by the ethnic group. Information on medicinal plants used by nomadic and sedentary communities of Tobelo Dalam (Togutil) was collected through direct contact semi-structured interview with key informants and group discussion. Determination of main informants was conducted using purposive sampling technique and snowball sampling was used to determine the key informants. Result of study revealed that the nomadic community of Tobelo Dalam (Togutil) ethnic group used 36 species of medicinal plants that belonged to 22 families for medicinal treatment to maintain their basic health; whereas, the sedentary community of the group use 57 species of medicinal plants that belonged to 35 families. © 2016, IndianJournals.com. All rights reserved.

Wahab I.H.A.,Khairun University | Arief A.,Khairun University
ICITACEE 2015 - 2nd International Conference on Information Technology, Computer, and Electrical Engineering: Green Technology Strengthening in Information Technology, Electrical and Computer Engineering Implementation, Proceedings | Year: 2016

To implement the good IT governance in local governance, we need an IT governance design for mature and appropriate models. There are some problems that appear in designing information technology governance in local government. The problem is how to control the information technology risk management at the operational level and designing information technology in mapping an integrated framework. So this led to the adoption of information technology in local government to be inefficient. This study proposes an integrated model framework of COBIT and TOGAF to design more comprehensive IT Governance to increase the efficiency of the application of IT in local government. An integrated model to solve the problem of IT risk management control are using the COBIT 5 framework. To solve the problem in designing an integrated IT governance is used TOGAF 9.1 framework. The result is the integration model combines three aspects: governance area, 6 principles and management area are used for the effective application of IT governance in local government. © 2015 IEEE.

Wahab L.H.A.,Gadjah Mada University | Wahab L.H.A.,Khairun University | Susanto A.,Gadjah Mada University | Insap Santosa P.,Gadjah Mada University | Tjokronegoro M.,Gadjah Mada University
International Journal of Imaging and Robotics | Year: 2016

Analysis and interpretation of malaria parasite images were performed in which one of them was to obtain the parasite image patterns, thus it could be conducted classification process towards image based on its pattern. The parasite image pattern is different between one and another, this depends on parasite type. Differentiating between one image and another needs a feature for each pattern. This study, therefore, aimed to analyze and evaluate algorithms of learning vector quantization neural network for malaria parasite pattern recognition test in real time. The result of this study showed that the LVQ network classification method could recognize 92% object,. Algorithm time complexity for LVQ is O(n). © 2016 by IJIR (CESER PUBLICATIONS).

Liestianty D.,Khairun University | Rodianawati I.,Khairun University | Patimah,Muslim University of Indonesia | Muliadi,Khairun University
International Journal of Applied Chemistry | Year: 2016

This study aims to find out the chemical composition of modified and fortified sago starch by encapsulated phytoplankton extract. This study used a simple complete random design with 4 treatments (S0, S1, S2 dan S3) repeated three times resulting in total 12 experimental units. The treatments consisted of sago starch without modification and fortification (S0), sago starch with heat moisture treatment (HMT) (S1), sago starch fortified with 7% of phytoplankton extract flour 1 (S2), and sago starch fortified with 7% of phytoplankton extract flour 2 (S3). The study procedures included the following steps: production of modified sago starch and continued with fortified sago starch production. Each of treatment was analyzed for its chemical compositions that included water content, ash content, protein, fat, crude fibre, carbohydrate, starch, amylose, amylopectin and color. Study findings indicated that the chemical compositions of the sago starch are: water level 13.51-17.37% (significant), protein 0.11-0.27% (significant), fat 0.65-0.87 % (significant), crude fibre 0.39-1.45% (significant), carbohydrate 81.07-83 % (significant), starch 70.25-72.61% (significant), amylose 23.95-26.59 % (significant) and amylopectin 43.69-48.4 % (significant). © Research India Publications.

Ilyas A.M.,Khairun University | Rahman M.N.,Khairun University
Telkomnika | Year: 2012

Fuel cost of a thermal generator is its own load functions. In this research, Modified Improved Particle Swarm Optimization (MIPSO) is applied to calculate economic dispatch. Constriction Factor Approach (CFA) is used to modify IPSO algorithm because of the advantage to improve the ability of global searching and to avoid local minimum, so that the time needed to converge become faster. Simulation results achieved by using MIPSO method at the time of peak load of of 9602 MW, obtained generation cost is Rp 7,366,912,798,34 per hour, while generation cost of real system is Rp. 7,724,012,070.30 per hour. From the simulation result can be concluded that MIPSO can reduce the generation cost of 500 kV Jawa Bali transmission system of Rp 357,099,271.96 per hour or equal to 4,64%.

Najamuddin,Khairun University | Prartono T.,Bogor Agricultural University | Sanusi H.S.,Bogor Agricultural University | Nurjaya I.W.,Bogor Agricultural University
Marine Pollution Bulletin | Year: 2016

Lead (Pb) and zinc (Zn) concentrations from surface sediments were determined at 17 stations in riverine, estuarine, and marine environments during the wet and dry seasons. The geochemical fractionations were obtained by a sequential extraction procedure in five geochemical forms: exchangeable, bound to carbonate, iron-manganese oxide, organic, and residual fractions. The concentrations of Pb and Zn in the water were higher during the wet season than the dry season and higher in the riverine and marine samples than the estuarine samples. Following geochemical fractionation, the metals were found mainly in the residual fraction. The results indicated that the concentrations were influenced by season, with the sources of Pb and Zn derived mainly from rivers and natural sources. The contamination status in the estuary of the Jeneberang River was classified as weak to moderate pollution and the risk level to aquatic biota attributed was no risk to low risk. © 2016.

Liestianty D.,Khairun University | Rodianawati I.,Khairun University
International Journal of Applied Engineering Research | Year: 2015

Encapsulation of protein extract of phytoplanktonwas conducted. The research aims at testing thefeasibility of phytoplanktonextractsto be usedin encapsulated sago food with maltodekstrin. The analysis method was Lowry andscanning electron microscopy (SEM). The results indicated that protein extracts of Dunaliellasalina had a high rendament content afterencapsulating process, respectively 1.4 % and 0.407 % while the application of maltodekstrin was 5 percent. The highest protein content after the application of 30 % of protein extract of Dunaliellasalina to sago starch products was 9.19 mg/g. © Research India Publications.

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