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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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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 6 Documents
 1 
Search results for , issue "Vol 6 No 3 (2014)" : 6 Documents clear
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
Rancang Bangun Sistem Kontrol Peralihan Beban pada Dua Generator Set Secara Automatis Ridwan Baharta; Winarto Winarto; Nurjan Didik
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.v6i3.839

Abstract

This research is the development of a generator that can be on/off automatically based on the existence of commercial power. Genset used in the study is the generator of household scale premium gasoline. In particular, this study aims to make switching system for two generators with timer settings to prevent loss of power. Testing the performance of the system is made to ensure that the system is functioning properly. Specification design tool created an amalgamation of two generators which can perform on/off according to a predetermined time. After the generator 1 operating for 4 hours, then automatically generator set 2 will live. About 10 seconds since the first 2 live generator, the generator 1 is still in operation, then the load will be transferred to the generator 2. With this delay system, then nothing happens lost power. This mechanism will be repeated after 4 hours of generator 2 operates. With this system, the availability of electrical power would continue as needed. Keywords: automatic transfer switch, generator set
Rancang Bangun Irigasi Tetes Emiter Tali untuk Budidaya Semangka (Citrullusvulgaris) Muhammad Idrus; I Gde Darmaputra; Surya Surya
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.v6i3.851

Abstract

The research was conducted at the Research Field of Lampung State Polytechnic, Bandar Lampung from August to November 2014.  The objectives of the research ware: (1) to designing of the drip irrigation with plastic rope emitter for watermelon cultivation; (2) to determining the hydrolic criteria of  the drip irrigation with plastic rope emitter for water melon cultivation; and (3 ) to  testing  the performanses of the drip irrigation with plastic rope emitter which are water storage efficiency, water distribution efficiency and water produktivity of water melon.    The result of the research showed that the drip irrigation with plastic rope emitter with 2, 3, and 4 cm length of emitter given flow rate of 7.205, 6.40, and 2.790 l/s respectively on the operation pressure of 0,15 atm. The size of 1 sub block the drip irrigation with plastic rope emitter is 15 m x 50 m for minimize pressure variation in the sub block.  The diameter and length of manifold pipe are 25 mm and 15 m, but the lateral pipe are 13 mm and 50 m. The diameter of main pipe depend on amount of the sub block   irrigated on once time irrigation. Total dynamic head for two sub blocks  irrigated is 3,44 m head and  pump capacity minimal 1,02 l/s.  The water storage efficiency, water distribution efficieny of the drip irrigation with plastic rope emitter were 100% and 87,73%.  The water melon production on the the drip irrigation with plastic rope emitter was 5,83 kg/plant was not significant different compared to furrow irrigation method was 5,64 kg/plant.  But irrigation water productivity of watermelon was significant different between of them. Water irrigation productivity of water melon by the drip irrigation with plastic rope emitter of 133 kg/plant was higher than the furrow irrigation method of 59 kg/plant.  Amount of iririgation water application on water melon cultivation by the the drip irrigation with plastic rope emitter was only 44 l/plant, but the furrow irrigation method was higher of 96 l/plant.  There for the amount of water  irrigation can be conserved on water melon cultivation by the drip irrigation with plastic rope emitter was 54%  compared to the furrow irrigation method. Keywords: drip irrigatoin, furrow irrigation, pressure operation emitter, flow rate, water melon, production, water storage efficieny, water distribution effiency, and irrigation water productivity.
Evaluasi Penyebab Genangan Banjir Wilayah Perkotaan Pringsewu Berdasarkan Dimensi Saluran Drainase Eksisting Ismadi Raharjo
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.v6i3.853

Abstract

Subdistrict Pringsewu consisting of 13 villages are urban area that is now the capital of the district Pringsewu. For urban areas, sub Pringsewu require well drainage infrastructure. In fact, today, if heavy rains, there are several locations, especially in the national road (Jalan Ahmad Yani) and provincial road (Jalan KH Gholib) were flooding  . This study aimed to evaluate the cause of the flooding in  urban areas Pringsewu based on the dimensions of the existing drainage channel. The research was conducted from June to December 2013. The results of the observation pattern Pringgsewu flow direction in the region can be divided into two (2) primary drainage systems, Sidoarjo System and Way Semah System. Rate of region rain through Thiesen polygon from 3 (three) rain stations that are representative of the region and then analyzed using the method Log Person III and Gumbel with return period of 50 years gain Rainfall of maximum daily (RH max) of 110,81 mm/h. Maxiimal rain intensity (I max) with a return period of 50 years using the formula obtained Mononobe is 13,03 mm./h. Drainage coefficient value (C)   is influenced by the use of land that is currently changing in urban areas Pringsewu, Sidoarjo system is expected to have a value of C=0,65, and for systems Way Semah estimated to have a value of C=0,45. With variable of I max and C as well as the value of the catchment area (A) which depends on each zone served by drainage channels, then by using the rational formula can be calculated discharge runoff that is expected to flow into the drainage channel at Q=CIA. From measurement of the existing dimensions of the drainage channel can be estimated the capacity of the channel, so as to evaluate the adequacy the drainage channel capacity to accommodate the runoff discharge in each zone. The results of these evaluations is only about 15,3% of channels in Sidoarjo system sufficient; whereas in the system Way Semah about 20%. For that in order to address the problem of flooding urban areas Pringsewu need immediate revitalization of existing drainage channel dimensions so that  the channels have sufficient capacity to accommodate rainfall runoff discharge in each zone. Keywords: flooding, urban areas, capacity drainage channel, discharge run off
Kajian Hidrolis Rencana Tanggul Pengendali Banjir Sungai Batanghari Kecamatan Bungur Kabupaten Lampung Timur Bagas Arya Hermuda; Didik Kuswadi; Andy Eka Saputra
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.v6i3.854

Abstract

Hydraulic embankment design done to solved flooding problems that it caused by damage  the catchment area, sedimentation, and the capacity of the river was not able to cover the stream during a peak discharge. The purpose of this research were (1) determined the flood discharge design, and (2) made hydraulic embankment design. Steps of research activities were the preparation, survey and topographical measurements, collected hydrological data,  processed of topography and hydrology data, counted the design maximum discharge, designed embankment river. The results showed that (1) the existing discharge was 479,745 m3/s, (2) the result of hydraulic design of Batanghari River embankment were the design discharge of  return period 50 years was 938,339 m³/s, the base width of the channel (b) by 35,5 m, the depth of flow (h) by 6,5 m, the slope embankment (1:m) by 1:1, height of freeboard by 1.0 m, wide embankment by 4,0m. Keywords: hydraulic embankment design, the river, flooding, the discharge

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