Judul: Standing and Habitat Condition of Sugar Palm (Arenga pinnata. (Wurmb.) Merr.) ‎in Hariang Village, Sobang District, Lebak Regency, Banten Province.
Abstrak: Pemanfaatan nira aren di desa hariang sudah dilakukan untuk waktu yang ‎cukup lama, oleh karena itu dilakukan penelitian untuk mengetahui seberapa besar ‎potensi nira aren yang dapat di manfaatkan. Penelitian ini bertujuan untuk ‎menduga potensi tegakan aren yang dapat di produksi niranya, mengidentifikasi ‎tingkat regenerasi serta pola persebaran, mengetahui tipologi habitat aren, serta ‎mengidentifikasi spesies vegetasi yang tumbuh di sekitar habitat aren. Penelitian ‎dilakukan pada kedua lereng yang menghadap kearah mata angin barat dan timur ‎dengan menggunakan metode observasi lapang, wawancara kepada beberapa ‎narasumber, analisis vegetasi dengan ukuran plot 20m x 20m, serta mencari ‎beberapa literatur yang sebagai acuan dan pendukung untuk hasil yang di dapat ‎dalam penelitian. Pada hasil penelitian di temukan persentase potensi tumbuhan ‎aren yang dapat di produksi sebesar 3% pada desa Hariang. Tingkat regenerasi ‎aren yang di dapat berada pada kategori bagus dengan pola persebaran yang ‎seragam. Sebanyak 48 jenis tumbuhan di temukan pada habitat aren. Vegetasi ‎hutan di sekitar desa hariang tergolong kedalam hutan rakyat dengan pola kebun ‎campuran. Hasil dari penelitian ini dapat dijadikan sebagai data tambahan dalam ‎upaya pengelolaan habitat aren.‎, Utilization of palm sap in Hariang village has been carried out for quite a ‎long time, therefore a study was conducted to find out how much potential palm ‎sap can be utilized. This study aims to estimate the potential of sugar palm stands ‎that can be produced for sap, identify the level of regeneration and distribution ‎patterns, determine the typology of sugar palm habitat, and identify vegetation ‎species that grow around the sugar palm habitat. The study was conducted on ‎both cliffs, each facing the west and east cardinal directions using field ‎observation methods, interviews with several sources, analysis of vegetation with ‎a plot size of 20m x 20m, and looking for some literature that can be used as a ‎reference and support for the results obtained. obtained in research. In the results ‎of the study, it was found that the percentage of potential sugar palm plants that ‎could be produced was 3% on Hariang village. The level of regeneration of sugar ‎palm that can be obtained is in the good category with a regular distribution ‎pattern. A total of 48 species of plants were found in the sugar palm habitat. The ‎forest vegetation around Hariang village is classified as community forest with ‎mixed garden pattern. The results of this study can be used as additional data ‎needed in efforts to manage sugar palm habitat.‎
Keyword: potential, sugar palm, typology

Judul: Potential and Utilization of Aren (Arenga pinnata (Wurmb) Merr.) in the Buffer Village of Gunung Rinjani National Park
Abstrak: Aren (Arenga pinnata (Wurmb) Merr.) merupakan tumbuhan multiguna yang memiliki potensi nilai ekonomi dan ekologi yang tinggi. Masyarakat sekitar Taman Nasional Gunung Rinjani banyak yang melakukan kegiatan perekonomian berasal dari hasil tumbuhan aren. Penelitian ini bertujuan mengidentifikasi potensi populasi aren dan bentuk pemanfaatan aren di desa penyangga Taman Nasional Gunung Rinjani. Pengambilan data dilakukan melalui studi literatur, wawancara semi terstruktur dengan metode purposive sampling, observasi lapang, dan analisis vegetasi. Pemanfaatan paling besar terdapat pada bagian bunga jantan untuk penyadapan air nira sebagai bahan baku pembuatan gula aren. Pemanfaatan lain yang dilakukan oleh masyarakat adalah bagian bunga betina untuk menghasilkan kolang-kaling; ijuk untuk pembuatan sapu dan atap rumah; daun untuk pembungkus makanan, pembuatan sapu lidi, dan pembatas lahan; batang mudanya sebagai bahan makanan; serta batang tuanya untuk pembuatan gagang perkakas dan pembatas lahan. Populasi tumbuhan aren di sekitar Taman Nasional Gunung Rinjani termasuk kedalam kategori lestari. Perlu adanya kerjasama antar berbagai pihak dalam pemanfaatan aren untuk meningkatkan nilai komoditas aren., Sugar palm (Arenga pinnata (Wurmb) Merr.) is a multipurpose plant that has high potential economic and ecological value. Many people around the Gunung Rinjani National Park carry out economic activities derived from sugar palm products. This study aims to identify the potential of the sugar palm population and the form of sugar palm utilization in the buffer area of Gunung Rinjani National Park. Data were collected through literature study, semi-structured interviews with purposive sampling method, field observations, and vegetation analysis. The greatest utilization is found in the male flowers portion for tapping the water of nira as a raw material for making palm sugar. Another parts of sugar palm commonly utilized is the female flowers to produce kolang-kaling; fibers used to make brooms and roofs; leaves used to make broomsticks, wrapping food, and land dividers; young stems as food; as well as old trunk for the manufacture of tool handles and land dividers. The sugar palm population around Mount Rinjani National Park is included in the sustainable category. Cooperation between various parties is needed in the use of sugar palm to increase the value of sugar palm commodities.
Keyword: sugar palm, potential, utilization

Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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