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All Journal Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Jurnal Penelitian Pertanian Terapan
Aniessa Rinny Asnaning
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Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Transportation

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Optimasi Pemberian Air Irigasi Berdasarkan Penggeseran Jadwal Tanam Terhadap Luas Tanam Maksimum (Studi Kasus Daerah Irigasi Sekampung Batanghari Kabupaten Lampung Tengah) Aniessa Rinny Asnaning; Muhammad Idris; Kelik Istanto
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol 22, No 1 (2017): Wahana Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v22i1.900

Abstract

Sekampung Batanghari Irrigation Area is one of the irrigation areas whose water supply comes from Argoguruh Dam. Lack of water discharge on weirs causes the cultivated area to be limited. The problem of water shortage needs to be given optimization solution of water distribution so that the area can be planted to maximum and can increase rice production.. Optimization analysis of channel in Sekampung Batanghari Irrigation Area was done using linear programming method by initial shifting cultivation in the first planting season when the availability of discharge in the channel was abundant with rice-rice-rice cropping pattern for three times of planting season. The optimization results that have been done by shifting the beginning of planting in January, February, May, August, and November show that the maximum plantable area that can be cultivated is 1,823.77 hectares per year that is on the initial shifting of the first planting season in January or May with intensity planting of 230%. While the minimum planting area that can be planted is 1,062.71 hectares per year on the initial shift of the first planting season in November.Kata kunci : optimization, irrigation, planting season
Dekafeinasi Menggunakan Metode Ultraviolet-Visible Spectroscopy dan PLS-DA Meinilwita Yulia; Aniessa Rinny Asnaning; Diding Suhandy
Jurnal Penelitian Pertanian Terapan Vol 18 No 1 (2018)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v18i1.1226

Abstract

This present research is an application of UV-VIS spectroscopy and SIMCA method to  distinguish robusta ground roasted coffee from Sumatera and Java. Spectral data  measurement of the filtered and diluted aqueous coffee samples was performed using a UV-VIS spectrometer (Genesys ™ 10S UV-Vis, Thermo Scientific, USA). SIMCA model was constructed for each class, SIMCA model of Sumatera robusta coffee and SIMCA model of Java robusta coffee. Prediction results show that all predictive samples are successfully grouped correctly according to their classes using the developed SIMCA model, except for S14aPA sample that fail to be classified as robusta coffee of Sumatra. Based on the results of the discriminant power plot analysis, it is concluded that in general the contribution of wavelengths between 200-350 nm is higher than that of the wavelength between 350-600 nm. Several wavelengths with very high contribution (high discriminant power value) and seen as peaks on the plot are 245 nm, 253 nm, 264 nm, 316 nm and 327 nm.
Co-Authors Diding Suhandy Kelik Istanto Meinilwita Yulia Muhammad Idris