Judul: Proyeksi Potensi Epidemi Penyakit Hawar Daun Bakteri (Xanthomonas oryzae) pada Tanaman Padi dengan Model EPIRICE (Studi Kasus : Provinsi Jawa Timur)
Abstrak: Serangan penyakit hawar daun bakteri merupakan salah satu permasalahan yang menghambat upaya peningkatan produksi padi. Model EPIRICE dapat dimanfaatkan untuk menganalisis pengaruh perubahan iklim terhadap potensi serangan penyakit hawar daun bakteri pada masa mendatang. Penelitian ini bertujuan memetakan dan menganalisis daerah yang berpotensi mengalami serangan penyakit hawar daun bakteri serta menganalisis dampak perubahan iklim terhadap potensi serangan penyakit hawar daun bakteri. Analisis pengaruh perubahan iklim dilakukan dengan memanfaatkan model iklim CSIRO Mk3-6-0 dan MIROC5 dengan skenario proyeksi perubahan iklim RCP 4.5 dan RCP 8.5. Perubahan iklim berupa peningkatan suhu udara menyebabkan potensi serangan penyakit hawar daun bakteri (Xanthomonas oryzae) yang dinyatakan dengan peramater AUDPC untuk periode 2030 dan 2050 mengalami penurunan dibandingkan periode baseline (2003-2005). Potensi serangan penyakit hawar daun bakteri berdasarkan skenario RCP 8.5 mengalami penurunan lebih besar dibandingkan skenario RCP 4.5. Wilayah dengan potensi serangan penyakit hawar daun bakteri tertinggi yaitu Kabupaten Ponorogo pada tahun 2030 dan Kabupaten Kediri pada tahun 2050.
Keyword: perubahan iklim, AUDPC, CSIRO Mk3-6-0, MIROC5

Judul: Pemanfaatan Data Curah Hujan Untuk Prediksi Sebaran Penyakit Hawar Daun Bakteri Menggunakan Model SMCE (spatial multi criteria evaluation) Studi kasus: Tanaman Padi di Kabupaten Karawang
Abstrak: The potency of loss out caused by Bacterial Leaf Blight (BLB) caused by Xanthomonas campestris pv. oryzae shows the importance of plant disease controlling based on attack potention analysis. Rainfall is one of importan factor that affected distribution of BLB. The purpose of this research is to evaluate the effect of rainfall toward prediction about distribution of BLB with spacial method using SMCE model. The result shows that distribution of BLB much affected by rainfall. Higher rainfall affected more distribution of Xanthomonas campestris pv. oryzae. The high distribution of BLB is occured during rainfall of 50mm – 172 mm, with highest accumulation of rainfall within two weeks are 174 mm. If the rice plant attacked by bacterial when it was young stage until generatif phase, it's production will decrease. Karawang Regency have a medium distribution of bacterial with large enough distribution areas. Prediction result of BLB distribution using SMCE model shows that the areas that susceptible attacked from February until March 2011 in Karawang Regency are some of Lemahabang, Talagasari, Tirta Mulya, Purwasari, Klari, Batujaya, Rawamerta, Bayusari, some of Cibuaya and Jatisari.
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Judul: Membran Komposit Kitosan-Zeolit untuk Aplikasi Direct Methanol Fuel Cell
Abstrak: Direct methanol fuel cell (DMFC) is a fuel cell that utilize methanol as the fuel source. The electrolyte membrane used in the DMFC system in this research was chitosan-zeolite composite membrane. The composite membrane was synthesized with chitosan-zeolite composition variation of 1:1, 1:2, 1:3, and 2:1. The membranes were analyzed by Fourier transform infrared spectrophotometer (FTIR) and scanning electron microscope, and for the specific gravity. Membrane performances were tested with methanol uptake, methanol permeability, conductivity, and potential difference in the DMFC system. The FTIR spectrum showed no formation of new functional groups inducating that the composite membrane was a result of physical mixing. Morphological analysis showed that the membrane was nonporous. Chitosan-zeolite 1:3 composite membrane had the highest specific gravity and methanol uptake, 1.4226 g/mL and 41.44%, respectively. The highest proton conductivity was showed by the 1:2 chitosanzeolite composite membrane, namely 7.2946× 10-7 S/cm. Based on this research results, chitosan-zeolite composite membrane can be applied in DMFC system.
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