Judul: Kajian Struktur Anatomi dan Sifat Fisis Kayu Balik Angin (Alphitonia excelsa): A Lesser Known Species from Kalimantan
Abstrak: Scarcity of wood supply for wood industries in Indonesian could be solved by searching several potential of wood species from natural forest. Among them, balik angin (Alphitonia excelsa) is one of the promising species since it belongs to faster grown lesser known wood species and abundant. To promote this species effectively, its anatomical structure and physical properties have to be studied. From the research it was showed that heartwood and sapwood are almost similar in colour (light gray), decorative (“V”-type), medium and even textured, straight grain, smooth, lustrous, medium hardness and odourless. Microscopic characteristics are 1, 4, 7, 9, 10, 13, 22, 30, 44, 47, 53, 56, 61, 65, 66, 69, 78, 79, 93, 97, 106, 109, 138, 153 and has resin material within the ray parenchyma cells. Average values of fiber length, moisture content, wood density, specific gravity, and MFA were 1042.84 μm, 13.03%, 0.49 g/cm3, 0.43 and 17.1˚, respectively. Fiber quality of this wood belonged to class of II-III with strength class of III.
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Judul: Kajian Struktur Anatomi dan Sifat Fisis Kayu Terap (Artocarpus odoratissimus), A Lesser Known Species Asal Kalimantan Selatan
Abstrak: Wood properties are correlated to proper utilization as well as processing. The objective of this research was to assess anatomical characteristics and physical properties of terap wood from South Kalimantan to promote its better utilization. Wood disk of 5 cm thick from a single tree at 1.3 m from the ground was utilized as sample unit. Radial variation of fiber length, microfibril angle (MFA), wood density, specific gravity (SG) and moisture content was measured from pith towards the bark represented by heartwood portion, sap- and heartwood region as well as sap wood region. Fiber dimension was measured through maceration specimens, while the MFA by microtome specimens. Wood density, SG and moisture content were measured by using gravimetric method. It was showed that wood properties were not affected by sample location within the wood disk. Wood density and SG tended to increase from pith towards the bark, while MFA tended to decrease. Average values of moisture content, wood density, SG, fiber length and MFA are 14.34%, 0.35g/cm3, 0.31, 1198.30±201.54 μm, 20.16±2.74o, respectively. With the 2-nd rank for fiber quality and 4-th rank for the strength, it determined wood could be used as raw materials for pulp and paper production and for lightweight construction.
Keyword: terap wood, microfibril angle, physical properties, anatomical structure

Judul: Desain Instrumen Pengontrol Otomatis Pasteurisasi Susu
Abstrak: Pasteurisasi merupakan salah satu cara pengawetan ter- hadap susu segar sebelum disimpan pada suhu rendah atau langsung dikonsumsi. Caranya adalah dengan memanaskan sam- pai mencapai suhu minimal 62.8 atau 71.7 °C yang diperta- hankan tetap selama 1800 atau 15 detik. Kombinasi suhu dan waktu dapat dipilih sesuai dengan kemampuan alat. Makin tinggi suhu yang dipilih makin pendek waktunya. Melalui proses pasteurisasi, rasa dan aroma susu tidak berubah dan seluruh bakteri penyebab penyakit (bakteri pa- togen) musnah. Berdasarkan kombinasi suhu-waktu, pasterisasi susu di- bedakan atas tiga metoda, yaitu metoda waktu lama (long hold), temperatur tinggi waktu pendek (HTST) dan temperatur tinggi (UHT). Suhu pasteurisasi dengan metoda waktu lama minimal 62.8 °C yang dipertahankan tetap selama paling se- dikit 1800 detik. Sedang HTST suhu minimalnya adalah 71.7 °C dengan waktu 15 detik atau lebih lama. Pada UHT waktu yang diperlukan adalah dua detik atau lebih singkat dengan suhu 87.8 - 132.2 °C. Pemakaian kombinasi suhu-waktu yang melebih dari ke- tentuan minimalnya akan mempengaruhi rasa, aroma, komposisi ...
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