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All Journal JISTech (Journal of Islamic Science and Technology) Fisitek : Jurnal Ilmu Fisika dan Teknologi
Mulkan Iskandar
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Education Materials Science & Nanotechnology Physics Other

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KARAKTERISASI PLASTIK EDIBLE FILM DENGAN PEMANFAATAN PATI KULIT UBI KAYU(Manihot utilissima Pohl.) DAN KERATIN BULU AYAM Awan Maghfirah Maghfirah; Anwar Dharma Sembiring; Mulkan Iskandar; Mis Ariska AJ Rambe; Eddy Marlianto
JISTech (Journal of Islamic Science and Technology) Vol 3, No 1 (2018)
Publisher : UIN Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (470.098 KB) | DOI: 10.30829/jistech.v3i1.1797

Abstract

Telah dilakukan penelitian mengenai pembuatan edible film sebagai bahan pengemas dari ekstrak Kulit ubi kayu(Manihot utilissima Pohl.),keratin bulu ayam serta plastisizer gliserin . Pengolahan edible film diawali dengan pembuatan ekstrak kulit ubi kayu terlebih dahulu. Edible film dibuat dengan mencampurkan ekstrak kulit ubi, keratin bulu ayam dan gliserol hingga homogen. penelitian yang dilakukan adalah variasi penambahan keratin yaitu 0%, 0,4%, 0,6%, 0,8% dan 1,0%. Dari variasi kemudian dicetak dan dikeringkan dalam oven selama 2 hari dengan suhu 40oC. Edible film yang dihasilkan kemudian diuji karakteristik. Hasil penelitian diketahui bahwa karakteristik yang meliputi kuat tarik, kemuluran, ketebalan dan serapan air yaitu 2,065 Kgf/mm2; 3,40%; 0,106 mm dan 537,7%. Dan kandungan pada  edible film merupakan polipaduan antara spektrum pada keratin dengan campuran pati dan gliserol.Dengan konsentrasi10%wt keratin. Hasil analisa termal menunjukkan terjadinya peningkatan titik leleh dan kenaikan temperatur dengan penambahan keratin.
THE INFLUENCE OF EL NIÑO ON RAINFALL VARIABILITY IN NORTH SUMATRA PROVINCE Hendri Irwandi; Mulkan Iskandar; Edison Kurniawan; Yeni Megalina
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 1, No 2 (2017):
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (768.597 KB) | DOI: 10.30821/fisitek.v1i2.1319

Abstract

El Niño is a global phenomenon that affects the variability of rainfall in the Province of North Sumatra, Indonesia. The impact of El Niño will be different for each region. This review will analyse the influence of El Niño activity on seasonal and annual rainfall variability. In this research, North Sumatra Province will be divided into 4 (four) regions based on its topographical conditions, such as: East Coast (EC), East Slope (ES), Mountains (MT), and West Coast (WC). The method used was statistical and descriptive analysis. Data used in this research were rainfall data from 15 stations/climate observation posts which is spread in North Sumatera region and anomaly data of Nino 3.4 region over the period 1981 – 2016. The results showed that the active El Niño had an effect on the decreasing of rainfall in the period of DJF, JJA, and SON in East Coast, East Slope, and Mountains with an average annual percentage decline up to 7%.Keywords: El Niño, rainfall, variability, and North Sumatra.
Co-Authors Anwar Dharma Sembiring Eddy Marlianto Edison Kurniawan Hendri Irwandi Maghfirah, Awan Mis Ariska AJ Rambe Yeni Megalina