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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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Kota 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 6 Documents
 1 
Search results for , issue "Vol 6 No 1 (2014)" : 6 Documents clear
Identifikasi Wilayah Rawan Banjir Kota Bandar Lampung Dengan Aplikasi Sistem Informasi Geografis (SIG) Didik Kuswadi; Iskandar Zulkarnain; Suprapto Suprapto
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 6 No 1 (2014)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v6i1.840

Abstract

Development and deforesting were quite in many parts of Indonesia. Change of function become impervious land caused an imbalance of hydrology and watershed conditions. The objective  of this research were (1) to determined the class of a flood- prone of Bandar Lampung City, (2) to made a map of flood- prone of  Bandar Lampung City. Based on the research, it can be some results: (1) The class interval of flood- prone is 100; (2) Flood- prone  levels of Bandar Lampung District is divided into five classes, namely: very low, low, medium, high, very high; (3) The domination of flood- prone area of Bandar Lampung City was medium, the areas of this is 104.74 km2 (57.28%); (4) The highest potential flood- prone was Western Telukbetung sub districkt, that they had the condition were the slope is flat, soil type was inceptisols, height of land was 0.0 to 12.5m from sea water level, and rainfall was high. Keywords: identification, flood-prone, geographical information system
Penentuan Kadar Gula Buah Salak Secara Tidak Merusak Menggunakan Near Infrared (Nir) Spectroscopy dan Interval Partial Least Squares (Ipls) Regression Winarto Winarto; Meinilwita Yulia
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 6 No 1 (2014)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v6i1.855

Abstract

The objectives of this research was to evaluate the feasibility of using NIR spectroscopy and interval partial least squares (iPLS) regression for nondestructive soluble solids content (SSC) determination in snake fruit. 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 iPLS regression using original spectra. The calibration results showed that the root mean square of cross-validation (RMSECV) of first six subintervals from 582-831 nm was lower than that of the average of RMSECV and these subintervals were selected for developing final iPLS regression. Using the selected subintervals the calibration has high quality of prediction with RPD = 3,35. Keywords: NIR spectroscopy, soluble solids content, absorbance mode, nondestructive   method, snake fruit, iPLS regression
Rancang Bangun Pengaturan Bukaan Choke pada Genset Hybrid (Bensin dan Bioetanol) Ridwan Baharta; Bastaman Syah
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 6 No 1 (2014)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v6i1.856

Abstract

Until recently, generator available in the market, generally gasoline or LPG. Conversion of gasoline to fuel bio-ethanol requires some adjustments.The research conducted was  a further development of research Nurjan Didik Purwanto in 2011. The research was focused on adjustment of airand fuel ratio after the fuel in the generator set was replaced with bioethanol. Bioethanol has a higher octane rating than gasoline, but it has a lower calorific value than petrol. With this condition, it is necessary to attempt to increase the ratio of air and fuel to be more "fat " to regulate the entry of air through the carburetor. Settings ratio of fuel and air is done by adjusting the carburetor choke openings. This setting restores the stability of the engine, the same as using premium gasoline.This study primarily aims to expand the use of renewable energy, especially for the implementation of electric power for households.The results of this research  has been successfully realized by using a Timer Switch AC, 12 Volt DC timer switch, solenoid valve (solenoid valve), and actuators. Aperture choke1/3 on the use of bio-ethanol fuel produces almost simillar to  the engine speed compare to it when  using gasoline. Fuel consumption of bioethanol is 40% more than the use of  gasoline. Keywords: choke, gasoline, bio ethanol
Rancang Bangun Mesin Penyangrai Kopi dengan Pengaduk Berputar Imam Sofi’i
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 6 No 1 (2014)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v6i1.857

Abstract

The roasting technique coffee bean was one of factor which influence quality powder coffee besides factor of raw material.   The roasting technique are include operator skill, mixing coffee bean in cylinder, air temperature in roasting’s cylinder,  heating source that is utilized, and activity after roasting.  The objective of this research is to make roasted machine of coffee bean with rotate mixer and test performance. Method is used by making roasted machine with cylinder made from stainless and rotate mixer from stainless strip spiral shape. In the top of cylinder fully equipped with covered and smokestack. Source of heat from elpiji stove.  The result of design was roasted machine coffee bean with dimension of length 92 cm, wide 62 cm and high 160 cm with ±40kg cylinder capacity.  Roasted machine component are beam, cylinder, mixer, side cover cylinder, inlet, outlet, top cover cylinder, anvil of stove and gearbox. Result of test showed that first test was 17,14  kg/jam capacity, second test was 24 kg/jam capacity and third test was 28.97 kg/jam capacity.  Rpm of mixer was 40 rpm and average fuel consumption 1.5 kg/jam. Keywords: roasted machine, spiral mixer
Rancang Bangun dan Aplikasi Irigasi Tetes Bawah Permukaan Emiter Serabut Kelapa untuk Budidaya Kol Bunga (Brassica oleracea botrytis L.) Dataran Rendah I Gde Darmaputra; Muhammad Idrus; Surya Surya
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 6 No 1 (2014)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v6i1.859

Abstract

The research purposed to design and application of coconut fiber emitter of sub-surface drip irrigation for low land cabbage plant, to determine thickness of coconut fiber emitter that good  application for cabbage plant, to measure sub surface-drip  irrigation performance that are emitter discharge, wetted area diameter, water use, production and  water productivity. This research conducted at State Polytechnic of Lampung from June to November 2013. The results showed that coconut fiber emitter of sub-surface drip irrigation can be applied to  cabbage plant. Thickness of coconut fiber emitter that good application for cabbage plant was 15 mm with 10 mm fasteners diameter. Water use of cabbage plant with application of coconut fiber emitter of sub-surface drip irrigation was 0.081 m3 per plant, 38% more efficient than kettle (gembor) irrigation (0.131 m3/plant). Water productivity with coconut fiber emitter of sub-surface drip irrigation was 3.58 kg/m3, 67% more higher than kettle irrigation  (2.15 kg/m3). Keywords: design, application, coconut, emitter, drip,  irrigation, cabbage.
Study Morfologi dan Marfometri Das Way Mesuji Danang Primanggara; Suprapto Suprapto
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 6 No 1 (2014)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v6i1.860

Abstract

Morphology and Morphometry watershed is a specific description of the watershed that was characterized by parameters related with: broad, shape, orientation, altitude, slope, flow patterns, river gradient, and the River’s density. This study aims to obtain data Morphology and Morphometry watershed conditions. Steps of this study were (1) identified criteria of morphology and morphometry watershed, (2) overlay watershed parameters. The results of this study were (1) Way Mesuji sub watershed is dominated by an elongated shape. This is caused the value of each Circularity Ratio Way Mesuji sub-watershed  less than 0.5; (2) Sub-watershed Slope is dominated by flat and ramps.This will result a slow velocity river stream; (3) region  altitude was dominated by a height of 25 meters above sea leve; (4) The flow pattern was dominated by the denditrik flow pattern; (5) The gradient of the river was dominated  less than 1%. Its caused that  river flow velocity will be low; (6) river density was dominated by medium and low grade.This shows that this area enough water reserves. Keywords: morphology, morphometry, Way Mesuji watershed.

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