Judul: Optimation of mangium wood utilization as component of the pre-fabricated seismic resistance house
Abstrak: This research aimed to determine the value of the strength characteristics and strength distribution on ASD/LRFD as well as quality classes of 8 years mangium wood; to examine the characteristics of mangium logs and the processing process, with three most optimal sawing pattern and to find out the reliability and to investigate the behavior of shearwall mangium wood panels on the seismic resistance test. Materials used were 60 pieces of 8 years mangium logs in 22-42 cm diameter and 210 cm length come from HTI PT Inhutani II, South Kalimantan Province. Samples than tested for the physical and mechanical properties, characteristics of wood and its determination of allowable stress based on format ASTM D 2555-06, ASTM D 2915-03 in ASD/LRFD following the RSNI (2002) and ASTM D 5457-04. Processing of wood involves the log gradings; optimization sawing sawmill with three patterns (conventional, live sawing and live sawing pattern on the MOP program) and the sawing process; drying process with a standard schedule International Finance Corporation (2008) and working processes for the manufacture of wood molding. Shearwalls are tested with racking test (ISO/DIS 22452-2009) using a monotonic lateral load and analysis by SNI 1726-2002. There are four shearwall design patterns size (6.8 x 120 x 240) cm consist of straight sheathing, diagonal sheathing, diagonal windowed sheathing and shearwall with diagonal doored sheathing. Result showed that physical properties of Mangium wood such as moisture content reach 13.01% and specific gravity is 0.58. Mechanical properties of small clear specimen consist of average MOEs reach 126,960 kg/cm2, MOR 1,000 kg/cm2. Based on Full Scale-NDT data, MOE value reach 117,298 kg/cm2 The characteristics of mangium wood from PT Inhutani II are small diameter, many defects and most of their stem is not round to nearly round, tapered and straight which will affect the quality of the wood. The output result in sawn timber form are 70.9%, 73.5%, and 74.7% respectively; in rough lumber form in follows 44.9%, 42.4%, and 45.5%; in blanking form in follows 37.9%, 35.5%, and 38.2% and in lumber shearing form in follows 27.7%, 26.4%, and 28.3% each for conventional pattern, live sawing pattern and live sawing pattern on the MOP program. The highest output at the live sawing pattern on the MOP program, which is followed by conventional pattern and live sawing pattern. On the mangium wood drying process, a modified conventional method requires 30 days until 11% MC and 33 days until 9% MC. The cost of molding production process of tongue and groove lumber for the prefabricated house include the transportation costs reach Rp 3,845,495/m, includes in II-III classes strength based on (NI-5 PKKI; 1961). Allowable stress in the term of Fiber Stress (FS) between FS 7 - FS 22 and the average at FS 12 (SKI C-bo-010:1987). Strength reference between E8 - E17 and the E12 on average (RSNI 2002). Mangium wood is so stiff and strong enough that can be recommended as a structural building materials in structures such as pre-fabricated wooden houses shearwall. Weibull distribution was chosen as the standard distribution for the mangium wood strength. 3. The
Keyword: Forest product, Forestry

Judul: Effect of Compression Ratio on Physical and Mechanical  Properties of Oriented Strand Board Wood Mangium  (Acacia mangium Wild.) with Preliminary Treatment  Steamed
Abstrak: Oriented Strand Board merupakan sebuah produk alternatif pemanfaatan jenis kayu cepat tumbuh. Pada umumnya jenis kayu cepat tumbuh memiliki nilai berat jenis yang rendah. Kayu yang digunakan adalah kayu mangium (Acacia mangium Wild.) dengan berat jenis 0,315. Penelitian ini bertujuan untuk menganalisis pengaruh rasio kompresi berbagai tingkat terhadap karakteristik OSB kayu mangium. Taraf rasio kompresi yang digunakan yaitu 1,32;1,45 dan 1,58. Strand kayu mangium diberi perlakuan dikukus pada suhu 126℃ dengan tekanan 0,14 MPa selama 1 jam. Pengujian sifat fisis dan mekanis mengacu pada standar JIS A 5908 (2003) yang hasilnya dibandingkan dengan standar CSA 0437.0 (Grade O-1). Hasil penelitian menunjukkan bahwa rasio kompresi memberikan pengaruh terhadap kualitas OSB. Rasio kompresi 1,58 menghasilkan OSB dengan sifat fisis yang lebih baik dari rasio kompresi 1,38 dan 1,45. Peningkatan rasio kompresi menyebabkan peningkatan sifat fisis dan mekanis OSB. Secara keseluruhan, karakeristik OSB pada rasio kompresi 1,58 memenuhi standar CSA 0437.0 (Grade O-1), terkecuali pada beberapa parameter sifat mekanis yaitu pada nilai MOE sejajar serat, MOE tegak lurus serat dan Internal Bonding., Oriented Strand Board is an alternative product using fast growing wood species. In general, fast-growing wood species have low specific gravity values. The wood used is mangium wood (Acacia mangium Wild.) with a specific gravity of 0,315. This study aims to analyze the effect of various levels of compression ratio on the OSB characteristics of mangium wood. The level of compression ratio used is 1,32; 1,45 and 1,58. Strands of mangium wood were treated by steaming at a temperature of 126 with a pressure of 0,14 MPa for 1 hour. Testing of physical and mechanical properties refers to the standard JIS A 5908 (2003) which results are compared with the standard CSA 0437.0 (Grade O-1). The results showed that the compression ratio had an effect on the quality of OSB. The compression ratio of 1,58 produces OSB with better physical properties than the compression ratio of 1,38 and 1,45. An increase in the compression ratio leads to an increase in the physical and mechanical properties of OSB. Overall, the OSB characteristics at a compression ratio of 1,58 meet the CSA 0437.0 (Grade O-1) standard, except for some mechanical properties parameters, namely the MOE parallel to the fiber, MOE perpendicular to the fiber and Internal Bonding.
Keyword: Mangium wood, Compression ratio, OSB, Steamed

Judul: Infeksi Virus Parainfluenza Pada Anjing
Abstrak: Virus parainfluenza anjing termasuk famili Paramyxoviridae, berbentuk pleomorf dengan ukuran bervariasi (bergaris tengah antara 100-500 nm), berpembungkus peka ether, berisi genom RNA dan secara serologis mempunyai kesamaan dengan virus SV-5 kera; dikenak sebagai salah satu kausa penting dari sindrom "kennel cough". Infeksinya dapat mengenai anjing semua umur yang belum pernah terinfeksi atau mendapatkan vaksinasi mengakibatkan gejala klinis ringan yang terbatas pada traktus respirasi atu infeksi yang secara klinis tidak memperlihatkan gejala nyata. Gejala klinis yang nampak setelah masa inkubasi (1-5 hari) terlewati berupa batuk yang tidak berat selama beberapa hari, berbagai tingkat tonsilitis dan pharyngitis dan kadang-kadang ditemukan kenaikan temperatur rektal antara 1-2 derajat C dari temperatur normal rat-rata. Anjing terinfeksi mengandung virus pada traktus respirasi bagian atas dan bawah serta limfonoduli sampai hari ke 9 setelah infeksi. Penyebaran virus antar anjing terjadi secara aerogen.
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