Judul: Wood component properties changes, wood cell structure and base properties densified wood to partially
Abstrak: Wood densification is a treatment that applicable to increase quality and wood properties, either through impregnation or compression. Until now, it was carried out comprehensively, but not partially, resulting in spring back and over density problems of densified wood. Therefore, using partial densification this study will evaluate and analysis the phenomenon occurred in cellular structure and chemical components of cell wall. Wood of Mangium and Agathis representing hardwood and softwood species, respectively, were used as the sample. Several temperature levels and heating durations were used in this experiment, while compression level was only one namely 20%. Impregnation with mixture monomer solution consists of styrene (ST) and methyl methacrylate (MMA) was performed with full- and empty cell methods. The result shows that partial densification of wood both compression and impregnation methods could resulted in the increasing of physical and mechanical properties of wood by changing its cellular structure and chemical components namely cellulose crystallinity, microfibril angle, lignin relocation as well as degradation of cellulose and hemicellulose. The result densification treated of wood showed generally good termite resistance.
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Judul: Sifat fisis, sifat pemesinan, dan keteguhan rekat kayu jati cepat tumbuh terdensifikasi
Abstrak: Densifikasi merupakan salah satu cara untuk meningkatkan mutu kayu melalui pemadatan menggunakan panas dan tekanan. Mengingat penelitian menggunakan contoh uji skala pakai masih jarang dilakukan, maka penelitian ini bertujuan untuk menganalisis sifat fisis, keragaan pemesinan dan keteguhan rekat kayu jati yang terdensifikasi dan membandingkannya dengan kayu jati yang tidak dipadatkan. Hasil penelitian menunjukkan bahwa densifikasi yang diterapkan yaitu pengurangan tebal 48.70%, tekanan 20 MPa dan suhu 150 °C mampu memperbaiki sifat fisis dan keteguhan rekatnya. Dibandingkan dengan kontrol, kadar air kayu terdensifikasi berkurang 38.44%, namun kerapatan, BJ keteguhan rekatnya meningkat masing-masing sebesar 71.46%, 80.41%, dan 18.79%. Sifat pemesinan kayunya relatif sama, namun kualitas kayu terdensifikasi lebih baik. Permukaannya lebih halus dan merata, warnanya lebih gelap menyerupai warna kayu jati tua. Kayu terdensifikasi yang dihasilkan masuk dalam kategori Kelas Kuat II. Hasil analytical hierarchy process membuktikan bahwa kayu terpadatkan merupakan bahan baku terbaik untuk pembuatan mebel dan furnitur. Di lain pihak, retensi dan penetrasi bahan pengawet tidak memenuhi standar.
Keyword: AHP, Densification, Shear strength, Machining performance, Forestry, Uji skala pakai, Mutu Kayu, Keragaan pemesinan, Kerapatan

Judul: Bakteri Flora Paling Umum Ditemukan Di Rongga Mulut Python Retikulatus Liar
Abstrak: Reticulated python is a non-venomous snake native to South and Southeast Asia. It is the world's longest snake. The purpose of this literature review study is to investigate the common bacterial flora found in oral cavity of the reticulated python. The data for this case study was obtained from several articles, journals, books and credible websites. Based on existing data, there are a wide variety of bacteria in the oral cavity of free-living reticulated pythons. The majority of the organisms were Gram-negative. Pseudomonas spp. were the most commonly isolated bacterial species, being found in 50% of the snakes sampled, and was followed by Staphylococcus sciuri.
Keyword: Reticulated python, snake bites, bacterial flora, oral cavity, microbiology