Judul: Pemetaan daerah rawan dan resiko banjir menggunakan sistem informasi geografis (Studi kasus Kabupaten Trenggalek, Propinsi Jawa Timur)
Abstrak: Banjir merupakan bencana alam yang dewasa ini sering melanda wilayah di Indonesia. Salah satu upaya untuk meminimalkan dampak negatif banjir yaitu tersedianya peta daerah rawan dan beresiko banjir, yang dapat dipakai untuk perencanaan pengendalian. Tujuan utama penelitian ini adalah mengembangkan metode pemetaan daerah rawan banjir berdasarkan konsep logika berbasis pengetahuan, untuk menentukan kriteria parameter daerah rawan dan beresiko banjir. Kemudian dilanjutkan dengan membuat petanya. Selain itu penelitian ini bertujuan untuk mengetahui zona rawan banjir di Kabupaten Trenggalek, mempelajari hasil zonasi rawan banjir berdasarkan tipe data hujan yang berbeda, analisis kejadian banjir pada tanggal 20 April 2006, dan mengetahui daerah yang memiliki resiko tertinggi.
Keyword: 

Judul: Pemetaan Daerah Rawan Banjir Berbasis Sistem Informasi Geografis pada Kecamatan Ciputat Timur Kota Tangerang
Abstrak: Banjir merupakan salah satu permasalahan utama di Indonesia. Salah satu upaya untuk meminimalkan dampak negatif banjir adalah dengan menyediakan peta daerah rawan banjir. Penelitian ini bertujuan untuk menganalisis pengaruh beberapa parameter kerawanan banjir terhadap peluang kejadian banjir, memetakan daerah rawan banjir, dan mengidentifikasi daerah risiko banjir di Kecamatan Ciputat Timur. Metode yang digunakan dalam analisis kerawanan banjir adalah metode skoring dan pembobotan dengan bantuan sistem informasi geografis (SIG). Parameter kerawanan banjir yang digunakan yaitu curah hujan, kemiringan lereng, ketinggian lahan, penggunaan lahan, jenis tanah, dan buffer sungai. Hasil penelitian menunjukkan wilayah Kecamatan Ciputat Timur didominasi kelas kerawanan banjir kategori sedang seluas 1.047,33 ha (66,22%). Kelas kerawanan banjir kategori tinggi dan sangat tinggi terdapat di Kelurahan Cireundeu dengan luas secara berturut-turut 20,95 ha dan 2,93 ha. Tingkat risiko banjir di Kecamatan Ciputat Timur sebagian besar masuk kategori sedang seluas 903,89 ha (57,15%). Kelas risiko banjir kategori tinggi terluas yaitu Kelurahan Cireundeu dengan luas 13,02 ha., Flooding is one of the main problems in Indonesia. One of the efforts to minimize the negative impact of flooding is to provide a map of flood-prone areas. This research aims to analyze the effect of several flood vulnerability parameters on the chance of flood occurrence, map flood-prone areas, and identify flood risk areas in Ciputat Timur Sub-district. The method used in flood vulnerability analysis is scoring and weighting method with the help of geographic information system (GIS). The flood vulnerability parameters used are rainfall, slope, land elevation, land use, soil type, and river buffer. The results show that the Ciputat Timur Sub-district area is dominated by the medium category flood vulnerability class covering an area of 1.047,33 ha (66,22%). The high and very high flood vulnerability classes are found in Cireundeu Village with an area of 20,95 ha and 2,93 ha, respectively. The level of flood risk in Ciputat Timur Sub-district is mostly in the medium category with an area of 903,89 ha (57,15%). The largest flood risk class in the high category is Cireundeu Urban Village with an area of 13,02 ha.
Keyword: kerawanan, Pemetaan, risiko, flood, mapping, risk, banjir, sig, gis, vulnerability

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