Judul: Pengaruh Pengendalian Langkap (Arenga obtusifolia) Terhadap Komposisi Tumbuhan Pakan Badak Jawa (Rhinoceros sondaicus
Abstrak: Langkap is a plant that invades on javan rhino habitat. Thus, a proper control management of langkap needs to be carried out by using logging method. Research study in the effect of langkap control management of the plant composition is done to determine effectiveness of logging methods. Research had been conducted during in June 2013 at Kalejetan Resort, Selokan Bayun- Seuseupan Block, Ujung Kulon National Park. Data were collected using vegetation analysis in eight plots of control management to monitor the diversity of plants, and also to monitor 53 control plots to find out the correlation between javan rhino visitations and langkap control management. Based on the result of the research, cut-leave logging method is the best method to conduct. Furthermore, by eliminating seedling and sapling of langkap will also increase the diversity number of javan rhino food plants. Increasing numbers of javan rhino visitation on the sites known related to the growing levels of javan rhino food plants.
Keyword: Ujung Kulon National Park., langkap, javan rhino, control management

Judul: Studi Kemungkinan Adanya Pengaruh Allelopati Langkap (Arenga abtusifolia Blumme ex Mart.) terhadap Pertumbuhan Semai Tumbuhan Pakan Badak Jawa (Rhinocerios soundaicus Desmarest 1822) di Taman Nasional Ujung Kulon
Abstrak: Badak jawa (Rhinoceros sondaicus Desmarest 1822) merupakan spesies satwa liar yang sangat langka di dunia dan mendapat prioritas utaliia untuk diselamatkan dari ancaman kepunahan. Selain populasinya yang kecil, secara alami badak jawa ini tidak akan mampu mempertahankan eksistensinya secara jangka panjang. Karena hanya tinggal di areal yang sangat terbatas dan perkembangan populasinya satigat dipengaruhi oleh dinamika ekologis, maka suksesi vegetasi menjadi hal penting dalam pengelolaan habitat yang berhubungan dengan penyediaan tumbuhan pakan.
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Judul: Photosensor producing based on ferroelectric material of Ba0,5Sr0,5TiO3 doped by Ferrium Oxide (Fe2O3) on a P-Type Silicon Substate Si (100) applied as a digital camera with a single pixel image sensor
Abstrak: Thin film Ba0,5Sr0,5TiO3 (BST) doped with Fe2O3 was grown on p-type silicon substrate (100) using chemical solution deposition (CSD). It used the solvent 2-methoxyethanol with annealing temperature of 850°C and the doping treatment Fe2O3 of 2.5, 5, 7.5, 10 % of the mass formed BST. Pure BST had the highest absorption of 600 nm of light wavelength. Additions Fe2O3 moves highest absorption in the range of 560 nm. Fe2O3 addition was strengthening thin film sensitivity to the effects of light. In general, doping Fe2O3 10% was result the best absorbance and current-voltage of BST thin film. Electrical properties of thin films BST include dielectric, photoconductivity, and dissipation energy. Based on the current-voltage (I-V) analysis, pure BST and doped BST showed photodiode properties. Dielectric values obtained in the range from 23.32 to 243. Based on electrical conductivity data and energy dissipation, BST thin films have shown photodiode characteristics and are therefore suitable as light sensors. The image sensor in a digital camera is also a light sensor. This BST thin film has been scientifically proven to be a light sensor and also it can be applied as an image sensor. This is a novelty image sensor based on thin film Ba0.5Sr0.5TiO3.
Keyword: barium strontium titanate, thin film, photodiode, image sensor, digital camera