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Andy Eka Saputra
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Kampus Politeknik Negeri Lampung Jalan Soekarn Hatta No. 10 Raja Basa Bandar Lampung
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INDONESIA
TEKTAN
Published by Politeknik Negeri Lampung
ISSN : 20851278     EISSN : 27453472     DOI : https://doi.org/10.25181/tektan
Core Subject : Agriculture, Social, Engineering,
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Engineering Environmental Science Mechanical Engineering
Jurnal Tektan merupakan salah satu jurnal di Politeknik Negeri Lampung yang  menampung hasil penelitian berupa artikel ilmiah yang berkaitan dengan Ilmu Keteknikan Pertanian, Mekanisasi Pertanian, Teknik Kimia, Teknik Sumberdaya Lahan dan Lingkungan,dimana artikel tersebut belum pernah dipublikasikan. Jurnal TekTan di terbitkan oleh Unit Penelitian dan Pengabdian Kepada Masyarakat Polinela Unit 3x dalam setahun. Jurnal Ilmiah Teknik Pertanian Ini diterbitkan oleh Unit Penelitian dan Pengabdian Kepada Masyarakat Polinela Sebagai Wadah Bagi Dosen, Mahasiswa dan PLP untuk mempublikasikan karya penulisannya. Jurnal ini sempat mengalami Jeda Pengaktifan Selama 3 tahun mulai terbitan 2016 sampai Agustus 2019, hal ini disebabkan karena kekosongan tim pengelola Jurnal. Kemudian dengan manajemen pengelolaan yang baru maka diterbitkan kembali untuk volume 11 No. 3 pada tanggal 16 Desember 2019
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 80 Documents
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Korelasi Perlakuan Lapang terhadap Galat Tereduksi Poligon Terbuka Didik Kuswadi; Kelik Istanto; Iskandar Zulkarnain
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 3 No 2 (2011)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v3i2.809

Abstract

The surveyor often apply unreferenced opened traverse method in basic framework surveying defined, especially, surveying which emphasized in long trace surveying. The objectives of this research are (1) Define procedure in unreferenced opened traverse in order that it may be corrected and (2) Predict similar nomenclature coordinates deviation value of unreferenced opened traverse and unreferenced one with treatments. Geometric approach as treatment was given in four points of unreferenced opened traverse by reading ruler marks, horizontal, and vertical angels which referenced to prior point and prior one with defined interval. The both computation result show that the treatment done able to reduce similar nomenclature coordinates deviation of unreferenced opened traverse to closure traverse. Systematic errors reduced was defined as reducing area which made by unreferenced opened traverse coordinates and it one with treatment to closure traverse. The reduce value was 42,888 m2 to 28, 326 m2 or in percent the systematic errors reduced was 33,95 %. Keywords: field treatment, traverse, systematic errors reduced
Modifikasi Pengepingan Skema Leap Frog dalam Penentuan Karakteristik Profil Aliran Sungai dalam Mendukung Pemetaan Wilayah Banjir (Penelitian Awal) Andy Eka Saputra; Didik Kuswadi
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 5 No 3 (2013)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v5i3.811

Abstract

In this study carried out by modifying the method LeapFrog split with The split the regulator equation St. Venant 1 dimensions. The factors used are data stream land cover and slope/contour. Rain put a lateral discharge equation while the discharge from upstream continuity included as a boundary condition on the grid points of the river. The final goal in future studies to produce an split which can be used to determine the flow profile characteristics of a river, so as to support the handling of flooding in the area desired nonstructure From the results of research conducted a few things that can be described Modifications made split Leap Frog has been successfully split the continuity equation and momentum with the results split. The split results for the continuity equation The split above results in the early stages this research in trying to in Microsoft Fortran programs running on 6.5 and at this early study tested a simple case of the trapezoidal cross section of the river as well as data supporting data retrieved from the data Sekampung river as an example the case for programs to run and found that the results are already responding injection split discharge Q Nakayasu Sekampung well with characteristic output the shape of the profile of the river flow and results split with Microsoft Fortran 6.5 program that is in use is generally obtained water discharge (Q) outputs the same program with a discharge Q Nakayasu with repeated time 50 years of segment 0 m at the river until 21 hour simulation model has the same result as shown in Table 4 (table discharge results of running the program), so that the program is appropriate and can be running on the characteristics of the next river.Keywords: leap frog, st venant, flood modelling, lateral discharge, boundary conditions, nakayasu
Erosion Hazard Level Prediction in Catchment Area Way Rarem Dam Lampung Province Suprapto Suprapto; Aniessa Rinny Asnaning
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 7 No 3 (2015)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v7i3.820

Abstract

The objectives of this research are to identify and evaluate the erosion in the catchment area of Way Rarem Dam, by predicting the magnitude of erosion using the Universal Soil Loss Equation (USLE). The outcome of this activity is the maps of erosion potential Catchment Area of Way Rarem Dam , which can be used as a guide in planning further handling. The field survey was conducted to cross check the locations suspected of having land use changes quickly in order to update data that already exist in accordance with current conditions. Calculation of the amount of erosion prediction using USLE equation is A = R x K x LS x CP. Based on the results obtained map making extensive catchment (Catchment Area) Reservoir Way Rarem namely 32864.8 ha (328.648 km ), which consistsof a class of very severe erosion very weight level covering 104.461 km2 (31.78%), weight level measuring 89.998 km 2 ( 27.38%), middle level mesuring 38.856 km (11.82%), light level measuring 92.262 km2 (28.07%), and very light level measuring 3,071 km (0.95%). The average rate of erosion in the catchment reservoirs Way Rarem which amounted to 238.33 tons/ha/year, which is classified in class IV of erosion levels or weight category.Keywords: erosion hazard level, catchment area
Simulasi Koefisien Parameter DAS dalam Membangkitkan Debit Sintesis dengan Metode Nreca (Studi Kasus pada DAS Sekampung Propinsi Lampung) Andy Eka Saputra; Kelik Istanto; Iskandar Zulkarnain
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 4 No 1 (2012)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v4i1.823

Abstract

This study aims to create a simulation of watershed parameters in the coefficient generating discharge data by the method of synthesis of NRECA at watershed Sekampung. The research was conducted at Polytechnic Lampung in August and November 2011. Search the data using charts NRECA created four stages of simulation, of the four simulations have started to show a trend following observations have been made. From the results of the simulation parameters to manufacture-4 is closer to a state of observation and calculation. This is shown by - average number of discharges with the same observation. Visually, the graph is closer to the observation that the model parameters can be used to predict the amount of discharge, especially in watershed areas compatriot Lampung Province. The best simulation on the simulation of the four obtained values of model parameters correlation coefficient Qobs Vs Qsim of 0.27 with the watershed parameters Sinitial: 50, Gwinitial: 50, SNOM: 100, Krech: 0.85, 0.63 K Base and CF: 0.72. included in watershed characteristics that have characteristics of watersheds with high permeable aquifers and discharge the small mainstay. Keywords: NRECA, model parameters, DAS, discharge synthesis
Rancang Bangun Pengering Ikan Teri Tenaga Surya dengan Kolektor Pelat Datar dan Turbin Ventilator Winarto Winarto
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 7 No 3 (2015)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v7i3.829

Abstract

The fish will quickly be damaged when the post-harvest handling is not done the right way. One of the pickling process is inexpensive and commonly performed by drying. One dried fish that is often consumed by people is anchovy. The manufacturing process anchovy done traditionally by means of direct drying in the sun on a patch of para-para. The drying process is often hampered by the way the weather factor, making it less efficient because it takes a long time, require a comprehensive and drying results prone to contamination dirt and other contamination. Utilization of solar energy that is abundant in Indonesia can be used as a dryer to reduce the use of fossil-based energy. This research aims to create and test performance anchovy dryer design and build solar energy. The working principle of the dryer is made of heat radiation collected by the solar flat plate collectors are arranged such that it can be used to heat the air flowing in the hallway under the flat plate collectors with dimensions of 4 m width, length and height of 7.5 m 0.5 m. In order for heating the air inside the hall optimum, then the inhibition of air flow by installing a bulkhead inside the hall are arranged in winding. The resulting hot air is used to dry the product that is placed in the drying chamber. The airflow from the inlet to the outlet in the system is due to the movement of the turbine ventilator by the flow of air / wind around the dryer. Performance test results anchovy solar dryer is 50-60OC drying air temperature, RH 12-40% in the drying chamber, the drying capacity of 12.5 kg/hour. Keywords: solar dryers, flat plate collectors, anchovy, turbine ventilator
Perencanaan Kolam Stabilisasi Untuk Penanganan Air Lindi (Leachate) Pada Calon Tempat Pembuangan Akhir (TPA) Kabupaten Mesuji Ismadi Raharjo; Suprapto Suprapto; Iskandar Zulkarnain
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 5 No 1 (2013)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v5i1.830

Abstract

Land sites of Final  Processing Disposal (TPA) Mesuji district has a relative flat  topographic  with a 3,20 ha area, the extents of the allocation of land use is planned landfill  area  2.60 ha and the remaining  0.60 ha as  area supporting infrastructure.  From the analysis of the water balance in  landfill sites was obtained  percolation 39 mm/month, with an area of landfill area of 2.60 ha planned then be generated leachate (leachate) that must be managed as much as 33.2 m3/day.  Leachate treatment plan using stabilization pond method consisting of an anaerobic pond with  a detention time  of 12 days and an 398.40 m3 capacity will reduce pollutants leachate influent BOD around 1500 mg/lt be 288.46 mg/lt; Facultative pond with a detention time  of 8 days and a capacity of 265.60 m3 pond will reduce pollutants leachate influent BOD 288.24 mg/lt be 79.51 mg/lt, and  Maturasipond  with a detention  of 10 days and a capacity of 322 m3 pond will reduce the material influent BOD of leachate pollutant 79.51 mg/lt be 16.86 mg/lt is further eligible to flow into water bodies (rivers).  The texture of the soil conditions in the local area is clay, then structural stabilization pond construction recommended  using reinforced concrete plate. Keywords: Leachate, BOD, Sstabilization Pond, Detention Time, Capacity Pond
Pengujian Kompor Gasifikasi Biomassa dengan Tiga Jenis Bahan Bakar Iim Imaduddin
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 5 No 1 (2013)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v5i1.833

Abstract

The objective of this research was to test a biomass gasification stove.  The experiment was conducted according to standard of boiling test from Baldwin. Biomass gasification stove was constructed from 1-mm zinc plate and had a dimension of 54 cm of height and 31 cm of diameter with combustion chamber capacity 5.89 liters.  Water was boiled with three types of biomass, namely wood, wood shavings, and rice husk.  Five liters of water was used in all experiments which were replicated three times.  Parameters to be observed included fuel consumption, boiling time, power of the stove, and thermal efficiency. The results showed that the stove was not working using rice husks due to no sufficient air flow through the rice husks pilling.  The stove was working good using either woodfuel or wood shavings. The average time to boil 5 liters of water using woodfuel and wood shavings was 14.47 minutes and 22.13 minutes, respectively.  Fuel consumption to boil 5 liters of water was 689.5 g using woodfuel and 619.67 g using wood shavings.  The input and output power of the stove was respectively 12.12 kW and 2.47 kW with woodfuel.  With wood shavings, the input and power of the stove was 8.24 kW and 1.64 kW, respectively.  The gasification stove had thermal efficiency of 19.93% with wood shavings and 20.41% with woodfuel.  It was better than thermal efficiency of a common traditional wood stove, which had thermal efficiency of 15.49%. Keywords: biomass, gasification stove, thermal efficiency, boiling time, power.
Disain Irigasi Tetes Tipe Orifis Tanpa Pompa untuk Tanaman Slada Secara Hidroponik pada Rak-Rak Bertingkat Muhammad Idrus
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 5 No 1 (2013)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v5i1.835

Abstract

The research was conducted at the Research Field of Lampung State Polytechnic, Bandar Lampung. The objectives of the research were (1) To design and construct the drip irrigation type orifice without pump for salad (Lactuca sativa L.) with hydrophonic system on cropshelf, and (2) To test irrigation efficiencies performance of the drip irrigation  type orifice without pump.  The result of the research showed that the drip irrigation type orifice without pump given distribution efficiency of water nutrition by 87.26%, water nutrition use efficeiency of 75.61%, and  salad production average of 130.31 g/tanaman, and water nutrition productivity of 2.44 kg/m3.  Salad  production dan water nutrition productivity average by  the drip irrigation type orifice without pump was higher compared to traditional water nutrition application.    Keywords: The drip irrigation type orifice, water nutrition, efficiency, and  Lactuca    sativa L.
Evaluasi Kinerja Saluran Primer Pada Jaringan Irigasi Bendung Argoguruh Wilayah Adipuro Tegineneng Lampung Tengah Yuni Laras Setyawati; Iskandar Zulkarnain; I Gde Darmaputra
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 6 No 3 (2014)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v6i3.837

Abstract

The primary channel of Argoguruh  located in Central Lampung regency. Argoguruh weir has two primary channels which is named  by Kanal One  and Kanal Two.  The decreasing performance and damage occurs with increasing age of the building. The purpose of study is to determine the performance of the primary channel Kanal One on Argoguruh weir irrigation network. Total length of the Cannal One on this study is about 9 km, which is measured from intake to distribution box on channel segmen KH2.  The method of research is conducted by direct observation in the field with determine the velocity, the dimensions of the existing primary channel and sedimentation volume. The secondary data like as the channel dimensions, discharge plans, schemes of irrigation networks, rainfall data, and climatology were collected to support for hydrologic analyst. The rainfall data and climatological data are used to calculate the water needed for irrigation , than the value of the water needed is used to calculate water discharge plan that will be used as a comparison to the existing discharge channel. The results of this study showed the water discharge in existing channel of 32.17 m3/s was able to drain the water in accordance with the discharge plan for 31.64m3/sec. The volume of sediment in the primary channel as 49344.55m3, the potential for sediment deposition during the year amounted to   471.62mm /yr, loss of water in the channel is about 0.12% and the efficiencies of primary channels is about  99.88%.Keywords: performance evaluation, primary channel, Argoguruh,
Seleksi Panjang Gelombang yang Efisien pada Nir Spectroscopy untuk Pengukuran Kandungan Padatan Terlarut Buah Salak Pondoh Menggunakan Model Forward Interval PLS (FiPLS) Meinilwita Yulia; Diding Suhandy
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 6 No 3 (2014)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v6i3.838

Abstract

In this research, the feasibility of using NIR spectroscopy coupled with forward interval partial least squares (FiPLS) regression for nondestructive soluble solids content (SSC) determination in Pondoh snake fruit was investigated. Spectra of snake fruit were acquired using a VIS-NIR USB4000 portable spectrometer in absorbance mode. The SSC was measured using a digital refractometer.  The calibration and validation models were developed using the FiPLS regression using original spectra. The result showed that the optimal combinations of 7 spectral intervals among 11 intervals which selected by FiPLS yielded good results (RMSEC = 0.854783%, rc= 0.96, RMSECV = 0.899828%, rv = 0.95).  Keywords: soluble solids content, absorbance mode, nondestructive method, snake fruit, FiPLS regression, NIR spectroscopy

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