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All Journal Agrointek Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) International Journal Engineering and Applied Technology (IJEAT)
Dewi Sartika T
Departemen Teknik Sipil, Universitas Nusa Putra, Sukabumi, Jawa Barat
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Environmental Science Mechanical Engineering

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SIMULASI PEMBEBANAN GIGI PERONTOK THRESHER BUAH PINANG (Areca catechu) MENGGUNAKAN METODE ELEMEN TAK HINGGA Sriyono Sriyono; Dewi Sartika T; Aries Karyadi; Agustami Sitorus; Ramayanty Bulan
AGROINTEK Vol 15, No 2 (2021)
Publisher : Agroindustrial Technology, University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrointek.v15i2.9571

Abstract

The design approach of a machine is a critical factor in deciding its performance. On the one, a really stronger material may be used in these machine components, but the associated costs would be higher due to overdesign (and vice versa). As a result, before beginning the production process, it is essential to study the critical points of machine components thoroughly. It would be the same if we were to design a betel nut thresher unit. The bow tooth is a crucial part of the areca thresher's design. The teeth are the parts that interact directly with the betel nut to release it from the betel nut bunch. Therefore, in this paper conducted a simulation using the finite element method (FEM) to determine the appropriate shape of the thresher tooth threshing machine for betel nuts. Three shapes of teeth that were tested in this simulation are teeth of round (type-A), rectangular (type-B), and hexagonal (type-C) teeth. The type of material that will be used to become tooth decay is ductile iron. The shape and type of this material are chosen based on the materials commonly used in Indonesia. The parameters used in the simulation include strain, stress, and displacement. The results showed that the rectangular (type-B) bow tooth could spread the shedding load better than other bow tooth types for betel nut thresher unit.
Kajian kapasitas daya pembangkit listrik tenaga air melalui pendekatan debit rencana metode rasional di sub-DAS Lawe Sempali, Provinsi Aceh Devianti Devianti; Ramayanty Bulan; Purwana Satriyo; Dewi Sartika T
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 10 No. 2 (2020): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.10.2.307-319

Abstract

Nowadays, electricity is a basic human need that must be available. Therefore, efforts to obtain electrical energy from renewable natural resources continue to be explored, especially water energy from watersheds and sub-watersheds. Aceh Province is a relatively widely available area of ​​watersheds and sub-watersheds. This study aims to analyze and categorize the potential of electric power generated by the Lawe Sempali sub-watershed, Aceh province, as a source of hydroelectric power. The method used in this research is the study of literature and field studies. The rainfall analysis of the ten year return period plan was carried out with four approaches, namely (i) normal distribution method (ii) normal log distribution method, (iii) Gumbel distribution method, and (iv) Pearson III log distribution method. Discharge plans that occur are analyzed using the rational method. The categorization of the power capacity of hydroelectric power plants is based on the capacity that can be produced by the sub-watershed. The results of this study were to report that the Lawe Sempali Sub-watershed has the potential to be a source of hydroelectric power generation in the category of micro-hydro and or small-hydro power plants. The capacity of electric power generated with planned discharge in the shortest return period (2 years) is a minimum of 68.21 KW (head 2 m) and a maximum of 3.41 MW (head 100 m).
Performance Evaluation of Irrigation Automation for Cultivation System of Rice Intensification (SRI) Combined with Jajarlegowo System: Theories, Methods, and Techniques N. Gupta; Encep Kamal; Kamsa Hambari; M. Rikja Hamdani; Pera Maeda Ningsih; Dewi Sartika
INTERNATIONAL JOURNAL ENGINEERING AND APPLIED TECHNOLOGY (IJEAT) Vol. 2 No. 1 (2019): International Journal of Engineering and Applied Technology (IJEAT)
Publisher : Nusa Putra University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (339.539 KB) | DOI: 10.52005/ijeat.v2i1.15

Abstract

The objective of this article is to review and represent about automation irrigations that have been gained in irrigation system performance evaluation for cultivation System of Rice Intensification (SRI) combined with Jajarlegowo System. This paper is based on the literature that is concerned with concepts, techniques, and methodologies applied to the automation irrigation and their performance in Indonesia. The development of automation irrigation for paddy field in Indonesia was presented and it was discussed. Several studies of automatic irrigation systems have been conducted in Indonesia. The results showed that the use of irrigation automation system combined with a system of rice intensification (SRI) and combined with jajarlegowo can increase rice productivity. This method is effective because the rice plants are watered according to their needs so that the growth becomes good. The method of irrigation automation is carried out using a water level control system adapted to the age of the rice plant. Water level sensors, irrigation actuators, and drainage actuators are installed in paddy fields to support the irrigation automation. In the application directly in the paddy fields owned by Indonesian farmers, this has not been done thoroughly. The main obstacle from the observation result of the research shows that automatic irrigation system technology has not shown any real difference compared to conventional irrigation. In addition, this automatic irrigation system should also be accompanied by human resources trained in its use and maintenance.
EFFECT OF FRYING TEMPERATURE OF SWEET POTATO CHIPS ON VACUUM FRYING TYPE VACUUM PUMP Dewi Sartika T; S. B. Daulay; A. Rohanah
INTERNATIONAL JOURNAL ENGINEERING AND APPLIED TECHNOLOGY (IJEAT) Vol. 2 No. 2 (2019): International Journal of Engineering and Applied Technology (IJEAT)
Publisher : Nusa Putra University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52005/ijeat.v2i2.26

Abstract

Food processing with cooking needs a special way to keep the content of the nutrition of the food. This research aimed to test the temperature Frying of sweet potato chips in vacuum frying (vacuum pump type). Therefore, research had been conducted using factorial randomized block design with one factor, i.e., frying temperature (75 °C, 85 °C, and 95 °C). Parameters observed were loss of oil, water content, and organoleptic values. The results showed that temperature significantly affected the loss of oil, water content, and organoleptic value. The best result was found in the frying temperature of 95 °C.
Evaluation of Drainage Channels on Residential Area O.T. Ikotun; Dewi Sartika
INTERNATIONAL JOURNAL ENGINEERING AND APPLIED TECHNOLOGY (IJEAT) Vol. 2 No. 1 (2019): International Journal of Engineering and Applied Technology (IJEAT)
Publisher : Nusa Putra University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (265.048 KB) | DOI: 10.52005/ijeat.v2i1.16

Abstract

The incompatibility of construction of urban or residential drainage channels with design criteria is often found due to difficulties in designing drainage channels. designers often make design mistakes when designing drainage channels. This study aims to evaluate the drainage system and designs a drainage channel that can collect runoff discharge on Residential Area. The results of flood discharge obtained using the Gumbel method for the 10 and 25 year return periods are 298.78 mm and 370.38 mm. From the calculation of the channel capacity in the field and the discharge plan most of the existing channel capacity cannot accommodate the current planned discharge of 2.261 m3s-1 for the primary channel and 1.824 m3s-1 for the secondary channel. The current channel cannot accept runoff discharge during rain, so the channel rehabilitation plan is carried out by expanding and extracting the dimensions of the drainage channel.
Co-Authors A. Rohanah Agustami Sitorus, Agustami Aries Karyadi Devianti Devianti Encep Kamal Kamsa Hambari M. Rikja Hamdani N. Gupta O.T. Ikotun Pera Maeda Ningsih Purwana Satriyo Ramayanty Bulan Ramayanty Bulan S. B. Daulay Sriyono Sriyono