Judul: Analisis Tataniaga Beras di Indonesia (Kasus : Jawa Barat dan Sulawesi Selatan)
Abstrak: Beras merupakan makana pokok bagi sebagian besar penduduk di Indonesia. Sebagi bahan pokok utama maka ketersediaan dan aksebilitas beras harus terpenuhi baik dari segi kuantitas, kualitas, sasaran dan waktunya.
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Judul: Analisis Usahatani dan Tataniaga Padi Varietas Unggul (Studi Kasus  Beras Pandan Wangi di Kecamatan Warungkondang Kabupaten  Cianjur)
Abstrak: Sistem ketahanan pangan merupakan persoalan tentang penyediaan bahan pangan pokok dalam dimensi kuantitas, kualitas, ruang dan waktu bagi seluruh masyarakat. Dalam bahasa ekonomi masalah ketahanan pangan menyangkut persoalan ekonomi produksi, distribusi dan konsumsi. Beras merupakan bahan pangan pokok bagi 95 persen penduduk Indonesia. Indonesia berhasil berswasembada beras pada tahun 1984. Dua dasawarsa terakhir ketersediaan beras nasional hanya mampu memenuhi 90 persen kebutuhan nasional. Ketersediaan beras dipengaruhi oleh beberapa faktor. Faktor-faktor yang mempengaruhi ketersediaan beras adalah luas areal panen (usahatani), produksi beras atau gabah, dan jumlah penduduk. Peningkatan produksi padi di Indonesia belum mampu mencukupi permintaan kebutuhan masyarakat dalam negeri yang jumlahya semakin bertambah setiap tahunnya. Agar stok beras nasional tercukupi pemerintah melalui Bulog melakukan impor.
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Judul: Hybrid solar cells of ZnO nanoparticles/chlorophyll was modified metal ions (Zn2+ and Cu2+ )
Abstrak: Zinc Oxide (ZnO) is a n-type semiconductor with a wide the energy band (Band Gap) is 3.37 eV at room temperature and 3.34 eV at low temperature with a large exiton binding energy is 60 meV. ZnO has been synthesized by hydrothermal method, resulting in a decrease in particle size over the duration of the hydrothermal changes. Crystallographic structure of ZnO were characterized using XRD, has shown the characteristic pattern of a hexagonal wurtzite structure, the crystallite size increases to changes in particle size. Changes in particle size has also led to a change in the absorption peak of ZnO as has been demonstrated posted under test using the optical properties of UV-Vis spectrophotometer. Changes of this uptake has also led to changes in the energy band gap, which increases its band gap energy of the particle size. In electronic applications, especially in solar cells. Chlorophyll is considered less effective, because of their very nature are easily degraded as a result of several reactions which are acid, lighting and temperature. The results of the stability test using a halogen lamp 34 W/m2 for 5 hours, that the substitution of chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form more stable than natural chlorophyll. The characterization of the optical properties, the combination of ZnO / chlorophyll in the form of hybrid films has led to a shift in the absorption region of ZnO becomes more widely from the UV to Visible. ZnO/chlorophyll has absorption range of 350-515 nm, ZnO / Zn-feofitin 332-401 nm and 332-632 nm for Cu-feofitin. The combination of ZnO/chlorophyll and CuSCN as a solid electrolite in hybrid solar cell, a modified chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form a more stable I-V curve. It is characterized by its fill factor value greater than natural chlorophyll. Nevertheless, solar cells with natural chlorophyll has been able to produce higher efficiency values of chlorophyll were substituted.
Keyword: Hydrothermal, ZnO/Chlorophyll modified, Hybrid Solar Cell