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INSIST (International Series on Interdisciplinary Research)

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Published by Universitas Lampung

ISSN : - EISSN : 25028588 DOI : -

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INSIST is an International online journal which publishes innovative research papers and critical reviews in the field of engineering and interdisciplinary science researches. It focuses on but not limited to Electrical and Telecommunication, Mechanical Engineering, Chemical and Environmental Engineering, Civil and Architecture, Geophysics Engineering, Material Physics, Applied Sciences and Biomedical Engineering. The over-riding criteria for publication are the originality, scientific quality and interest to the interdisciplinary research.

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Articles 15 Documents

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Search results for , issue "Vol 2, No 1 (2017)" : 15 Documents clear

Identication of Variance Moleculer Genotype Commercial Oil Palm (Elaeis guineensis Jacq.) based on Random Amplified Polymorpism DNA (RAPD) Markers Arnen Pasaribu; Lollie Agustina P.Putri; Dwi Suryanto
INSIST Vol 2, No 1 (2017)
Publisher : Universitas Lampung

Abstract —Commercial oil palm is one of plant genotype have a inbreeding so that it will be genetic depression. Genetic depression can cause difficulties to identification of genetic trait in palm oil, so that identification of moleculer variance is necessary to know the genetic potential of commercial palm oil to obtain initial information about genetic diversity. The objectives of this study was to find genetic diversity in commercial oil palm (E. guineensis Jacq.) by using five RAPD primers (OPC-12, OPH-12, OPC-7, OPI-20 and OPD-16). The results of this study showed that Polymorpism Information Content (PIC) was 0.338. PCoA analysis showed that the moleculer varian was 43,72% and according to profil radial neighbour joining tree (NJtree) showed that three main groups. Keywords—Genetic Variation,Oil Palm , RAPD

The Influence of Change Load Against Fuel Cost in Coal-fired Power Tarahan Lampung Unit 3 and 4 Endah Komalasari; Rahmattulloh Rahmattulloh; Herri Gusmedi
INSIST Vol 2, No 1 (2017)
Publisher : Universitas Lampung

Abstract—The operation of a power plant depends on fuel where fuel costs are incurred on a generating unit is a function of the plant load. The ability power plant carry the load determine the reliability of an electrical system, hence the power raised always be done equal to needs in side load all the time. Fluctuations demand of electrical power in side load will cause fluctuations change fuel cost. In this paper, the correlation both commonly called input-output characteristics of the power plant needs to be determined. These characteristics declared total input tons of coal per hour is used and net electrical output where the output power is available to the electric utility. One way to achieve this goal is to match polynomial regression on the data using a second order polynomial. This model allows the study of the incremental fuel cost resulting from a change load in a coal-fired power plant.Keywords—Coal-fired power, economic dispatch, incremental cost characteristics, input-output characteristics, second order polynomial regression.

Preparation and Characterization of NiMo/C Using Rapid Heating and Cooling Method for Renewable Diesel Synthesis from Nyamplung Oil (Calophyllum Inophyllum Oil) Bambang Heru Susanto; Muhammad Bagus Prakasa; Muhammad Husein Shahab
INSIST Vol 2, No 1 (2017)
Publisher : Universitas Lampung

Abstract— The synthesis of metal nanocrystal was conducted by modification preparation from simple heating method which heating and cooling process run rapidly. By used NiMo/C 700 oC catalyst for 30 minutes which had surface area of 263.21 m2/gram, had 31.77 nm crystal size, and good morphology of material, obtained catalyst with high activity, selectivity, and stability. After catalyst activated, synthesis of renewable diesel performed in hydrodeoxygenation reactor at 375 oC, 12 bar, and 800 rpm for residence time of 150 minutes. The result of conversion was 81.99 %, yield was 68.08%, selectivity was 84.54 %, and spesification met the petroleum diesel standard.Keywords— Hydrodeoxygenation, NiMo/C, Nyamplung Oil, Rapid Heating and Cooling, Renewable Diesel.

Robust Estimation of Generalized Estimating Equation when Data Contain Outliers Khoirin Nisa; Netti Herawati
INSIST Vol 2, No 1 (2017)
Publisher : Universitas Lampung

Abstract—In this paper, a robust procedure for estimating parameters of regression model when generalized estimating equation (GEE) applied to longitudinal data that contains outliers is proposed. The method is called ‘iteratively reweighted least trimmed square’ (IRLTS) which is a combination of the iteratively reweighted least square (IRLS) and least trimmed square (LTS) methods. To assess the proposed method a simulation study was conducted and the result shows that the method is robust against outliers.Keywords—GEE, IRLS, LTS, longitudinal data, regression model.

Contributions of Enim Watershed in Production of Irrigation Rice Using Benefit and Cost Analysis Yuli Andriani; T.Yuri M. Zagloel; R.H. Koestoer; M. Suparmoko
INSIST Vol 2, No 1 (2017)
Publisher : Universitas Lampung

Abstract— Population growth impacts on accumulating basic need. Basic foodstuff of Indonesia people is rice. The rice is derived from paddy field. The availability of paddy land use need to be maintained due to the continuously of supporting aspects ie water, paddy field. Therefore, it is necessary to manage rice crops to yield more production. Irrigation is one way to increase rice production. Irrigation plays an important role in the success of rice production. An important role of this irrigation should be assessed economically. The economic value of irrigation for paddy production needs to be studied. An important role of the irrigation should be assessed econmically. The economic value of irrigation for paddy production needs to be studied. Study of economic value is important so that people know that the irrigation water is an important contribution in the production of rice in addition to seeds, fertilizer and labor. It is necessary for economic calculation.This study aimed to quantify the economic value of watersheds to irrigate rice fields. Economic value calculation is conducted using benefit and cost benefit analysis on use of irrigation watershed in Cahaya Alam village. Muara Enim regency in South Sumatera of provinceKeywords— Enim watershed, irrigation, benefits and costs analysis

Financial Feasibility Study of Liquid Smoke Industry from Palm Oil Empty Fruit Bunch in Mesuji Regency, Lampung Province Erdi Suroso; Wisnu Satyajaya; Tanto Pratondo Utomo; Laila Julianti
INSIST Vol 2, No 1 (2017)
Publisher : Universitas Lampung

Abstract— The objective of this research was to examine the feasibility of liquid smoke production from palm ail empty fruit bunch (EFB). This research was a survey with expert respondents to collect primary data while literatures and reports study as secondary data. The result of study showed that the liquid smoke industry from EFB was feasible to be developed with eligibility criteria Rp. 991,486,765 of NPV ; 2.50 of Net B/C; 36.59 % of IRR ; and 2.83 years of PBP. The result of sensitivity analysis showed that the liquid smoke industry from EFB more sensitive for liquid smoke price decerasing than raw material and other inputs price increasing.Keywords— Financial Feasibility, Liquid Smoke, EFB.

Physicochemical & Microbial Characterization of Overripe Tempeh Stefani Djunaidi; Maria Dewi Puspitasari Tirtaningtyas Gunawan-Puteri; Christofora Hanny Wijaya; Elisabeth Kartika Prabawati
INSIST Vol 2, No 1 (2017)
Publisher : Universitas Lampung

Abstract— Recent research showed potencies of overripe tempeh for development as condiment, and therefore, requirement of guiding parameters related to sensory properties. In this study, four samples of overripe tempeh from single source of soybean with different processing method were observed. All samples were characterized with comparable brown color (L* 52.96, a* 6.84, and b* 18.52), and total number of lactic acid bacteria (8.30 – 8.46 log CFU/g). All samples also have similar trends of protein and soluble amino acid content (50.32 – 61.77 mg BSA eq/g dry base, 357.39 – 418.78 mg tyrosine eq/g dry base) compared to fresh tempeh (62.43 mg BSA eq/g dry base, 71.70 mg tyrosine eq/g dry base). The findings indicated suitability of above parameters as guidance in target overripe tempeh for condiment ingredients. Observation of total microbial and total yeast and mould showed that these parameters were affected with production method of overripe tempeh.Keywords— Overripe tempeh, guiding parameters, microbial characterization, physicochemical characterization

Case Study: Maintenance Proposal of Press Parts Production for Minimize Waste by Lean Manufacturing – Value Stream Mapping (VSM) Dessy Agustina Sari; Sukanta Sukanta
INSIST Vol 2, No 1 (2017)
Publisher : Universitas Lampung

Abstract—Higher competition in businesslike field demanded each company acted as a value creator with progressive fixing performance. One of effort in increasing productivity was reducing waste. Enterprise T have seven type of extravagance were over production, transportation, inventory, over processing, motion waiting and defect. Minimize waste have bond with production time which could increase efficiency on using electricity and decreased lead time. Production process in this company showed non-value added time such as excessively material transportation in picking area and so the workers too much waited for the next schedule activity. This condition caused higher product lead time. Lean manufacturing idea necessary was implemented with using tool Value Stream Mapping – VSM. This strategy would resumed for the company maintenance and the result showed that lacking as much 26,45% of lead time could be a problem solution. Reducing lead time could be higher if the company have applied and played continue improvement.Keywords—lead time, lean manufacturing, value stream mapping.

Pet Plastic Bottle Waste with Reuse Approach as Interior Pre-Fabrication Modules for Interior Wall Ignatius Adrian Santana; Dalhar Susanto; Widyarko Widyarko
INSIST Vol 2, No 1 (2017)
Publisher : Universitas Lampung

Abstract—PET plastic bottle is one of the main source of waste in big cities. This research aims to find out the possibility of reusing PET bottle as pre fabrication wall module material. The pre fabrication concept were offered so that in the construction phase, the instalation of this material will be fast, efficient, and able to minimalize the waste potential. The method to decided the PET bottle specimen was by surveying some sample location in Jakarta to found out the type and capacity of PET bottle waste. Bottle waste that has the highest volume, was selected to be the speciment for further experiment as pre fabrication modul. To determine the strength capacity of this material, some module variation were designed for compressive and flexural strength test. This research is a preliminary experiment to understanding the basic potential of PET bottle as building material. This research expected to support the use of PET bottle waste for other uses in building constructionKeywords— reuse, PET bottle, pre-fabrication, module.

The Conservation of Kali Pasir Jami’ Mosque in Tangerang, Banten Yulia Nurliani Lukito; Mushab Abdu Asy Syahid
INSIST Vol 2, No 1 (2017)
Publisher : Universitas Lampung

Abstract—The aim of this study is to elaborate the conserving Kali Pasir Jami’ Mosque in Tangerang City, Banten Province that includes the participation of local communities. There is an initial conservation program proposed by the local government but it is not yet clear of how should the collaboration between communities who have done practical conservation and local government who slowly plans the conservation program. The lack of historical documentation of the building and unstructured research done by communities imply a potential threat to the conservation effort and loss of historical values of the mosque. This paper is the result of both qualitative and quantitative approaches such as observation and in-depth interviews in analyzing the conservation of the mosque. The finding of the research shows the important role of local communities in the sustainability of the mosque although there is also an urge to involve experts and government to create the right strategy in conserving the mosque.Keywords—conservation, Kali Pasir Jami’ Mosque, preservation

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