Judul: Review: Pemanenan Hutan Skala Kecil
Abstrak: Pemanenan hutan adalah serangkaian tahapan kegiatan yang dilaksanakan untuk mengubah pohon dan memindahkannya ke tempat pengolahan. Hutan skala kecil merupakan hutan dengan luas areal lebih kurang 100 hektar dan dapat mencapai luasan maksikum 1000 hektar. Tujuan penelitian ini ialah untuk menghimpun, mengidentifikasi, dan memberikan informasi gambaran serta informasi hasil-hasil penelitian mengenai sistem pemanenan hutan skala kecil. Penelitian menggunakan metode Systematic Review. Jumlah artikel ilmiah yang digunakan sebanyak 33 artikel. Sistem pemanenan hutan skala kecil di hutan alam Asia dan Afrika berpotensi dapat diterapkan pada pengelolaan Hutan Rakyat di Indonesia., Forest harvesting is step of activity to change the trees and then transfer them to a processing site. Small-scale forests are forests that have approximately 100 hectares and reach a maximum area of 1000 hectares. This research aims to collect, identify, and provide descriptive information as well as the results from various research regarding small-scale forest harvesting systems. The study used the Systematic Review. The number of the article used was 33 articles. It is concluded that small-scale forest harvesting systems in Asian natural forests and Africa are recommended community-based forest management in Indonesia.
Keyword: forest harvesting, small-scale forest, harvesting system

Judul: Systematic Review: Techniques, Produvtivity, and Costs of Harvesting Forest in Indonesia
Abstrak: Pasokan kayu selama ini berasal dari hasil pemanenan hutan alam dan hutan tanaman. Penelitian mengenai pemanenan kayu sudah banyak dilakukan di Indonesia dengan variasi hasil yang berbeda. Penelitian ini bertujuan untuk menghimpun hasil penelitian mengenai teknik, produktivitas, dan biaya pemanenan hutan di Indonesia. Data sekunder dihimpun menggunakan metode Systematic Review kemudian dianalisis menggunakan analisis deskriptif. Berdasarkan hasil pencarian secara online terhimpun 51 artikel penelitian mengenai pemanenan kayu di Indonesia yang kemudian dikelompokan menjadi tiga tipe hutan yaitu, hutan tanaman lahan basah, hutan tanaman lahan kering, dan hutan alam. Hutan tanaman lahan kering merupakan jenis hutan yang paling banyak diteliti. Kegiatan pemanenan dibagi menjadi beberapa tahapan antara lain penebangan, penyaradan, muat bongkar, dan pengangkutan. Kegiatan yang paling banyak diteliti adalah penyaradan. Produktivitas pemanenan dipengaruhi oleh peralatan pemanenan, kondisi lapang, teknik pemanenan, keterampilan pekerja, beban kerja, dan cuaca. Besarnya biaya pemanenan di pengaruhi oleh produktivitas, biaya pemilikan, biaya operasional, dan upah pekerja., The supply of wood so far has come from harvesting natural forests and plantation forests. Many studies on timber harvesting have been carried out in Indonesia with varying results. This study aims to compile research results on techniques, productivity, and costs of forest harvesting in Indonesia. Secondary data was collected using the Systematic Review method and then analyzed using descriptive analysis. Based on the results of an online search, 51 research articles on timber harvesting in Indonesia were collected which were then grouped into three types of forest, namely, wetland plantation forest, dry land plantation forest, and natural forest. Dryland plantation forest is the most studied forest type. Harvesting activities are divided into several stages, including logging, skidding, loading and unloading, and transportation. The most researched activity is skidding. Harvesting productivity is influenced by harvesting equipment, field conditions, harvesting techniques, worker skills, workload, and weather. The amount of harvesting costs is influenced by productivity, ownership costs, operational costs, and worker wages.
Keyword: biaya pemanenan, produktivitas pemanenan kayu, teknik pemanenan

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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