Judul: Sifat fisis dan mekanis papan partikel Bambu Betung dengan perlakuan perendaman asam asetat
Abstrak: Bamboo can be used as an alternative raw material for many wooden products. One of the promising products that can be developed from bamboo is a particleboard. However, previously experiment reported that some physical and mechanical properties of bamboo particleboard were lower than that of standard requirement. In order to improve the quality of bamboo particleboard, this research aimed to study the effect of acetic acid soaking pretreatment on physical and mechanical properties of Betung bamboo particleboard. Bamboo particle was soaked in 1, 2, and 3% acetic acid solution, respectively. Urea formaldehyde (UF) adhesive was used for binder which the target density of particleboard was set at 0.70 g/cm3. The UF bonding of bamboo particleboard with and without addition of hardener were used as control. Physical and mechanical properties of particleboard were tested in accordance with JIS A 5908:2003 standard. The result showed that acetic acid soaking pretreatment increases the physical properties of particleboard, nevertheless, it has not met the standard of Japanese Industrial Standard (JIS A 5908:2003). The mechanical properties of particleboard have met the standard of Japanese Industrial Standard (JIS A 5908:2003) for modulus of rupture (MOR), internal bond (IB) and Screw Holding Power. The increasing of acetic acid concentration the decreasing of board strength was observed, indicating that a part of chemical component of bamboo degraded by acid.
Keyword: Bogor Agricultural University (IPB), urea formaldehyde, particleboard, betung bamboo, acetic acid

Judul: Physical, Mechanical and Surface Quality Properties of Ater Bamboo Fiberboard (Gigantochloa atter Kurz.)
Abstrak: Penelitian ini bertujuan untuk menganalisis sifat fisis dan mekanis papan serat bambu ater (Gigantochloa atter Kurz.) akibat adanya perlakuan alkali (NaOH) dengan konsentrasi 2% dan 5%. Papan serat dibuat menggunakan perekat urea formaldehide (UF) dengan kadar perekat 10% dan target kerapatan sebesar 0.6 g cm-3. Pengujian dilakukan merujuk pada JIS A 5905 (2003). Berdasarkan hasil pengujian diperoleh nilai rata-rata kerapatan papan serat yaitu sekitar 0,60 sampai 0,62 g cm-3. Nilai rata-rata kadar air sekitar 9,36 sampai 9,58%. Nilai rata-rata pengembangan tebal selama 2 jam dan 24 jam berkisar antara 19,20 sampai 37,89% dan 30,02 sampai 53,80%. Nilai rata-rata daya serap air selama 2 jam dan 24 jam berkisar antara 99,98 sampai 131,77% dan 106,47 sampai 142,29%. Nilai rata-rata Modulus of Elastisity (MOE) berkisar antara 765,19 sampai 1069,54 MPa. Nilai rata-rata Modulus of Rupture (MOR) berkisar antara 6,69 sampai 10,40 MPa. Nilai rata-rata Internal Bond (IB) berkisar antara 0,09 sampai 0,14 MPa. Nilai rata-rata KPS berkisar 909,91 sampai 932,78 N. Nilai rata-rata kekasaran permukaan berkisar antara 3,82 sampai 4,35 µm. Pemberian perlakuan alkali konsentrasi 2% dan 5% dalam pembuatan papan serat bambu ater menurunkan nilai sifat fisis dan mekanis papan serat bambu ater. Hasil penelitian menunjukan nilai sifat fisis dan mekanis yang diperoleh umumnya belum memenuhi standar JIS A 5905 (2003) tipe 15, namun masih memenuhi tipe 5., The purpose of this study is to analyze the physical and mechanical properties of ater bamboo fiberboard (Gigantochloa atter Kurz.) concentrations of 2% and 5%. Fiberboard is made using urea formaldehyde (UF) adhesive with 10% adhesive content and density target was 0.6 g cm-3. The test was carried out referring to JIS A 5905 (2003). Based on the test, the average value of fiberboard density is around 0,60 to 0,62 g cm-3. The average value of water content is around 9,36 to 9,58%. The average value of thickness swelling for 2 hours and 24 hours ranged from 19,20 to 37,89% and 30,02 to 53,80%. The average value of water absorption for 2 hours and 24 hours ranged from 99,98 to 131,77% and 106,47 to 142,29%. The average value of the Modulus of Elasticity (MOE) ranged from 765,19 to 1069,54 MPa. The average value of the Modulus of Rupture (MOR) ranged from 6,69 to 10,40 MPa. The average value of Internal Bond (IB) ranges from 0,09 to 0,14 MPa. The average value of the KPS test ranged from 909,91 to 932,78 N. The average surface roughness value ranged from 3,82 to 4,35 µm. Alkali treatment with concentrations of 2% and 5% in the manufacture of ater bamboo fiberboard decreased the value of physical and mechanical properties of bamboo ater board. The results showed that the value of physical and mechanical properties generally did not meet the standards of JIS A 5905 (2003) type 15, but still fullfillment for type 5.
Keyword: bambu ater, papan serat, perlakuan alkali, urea formaldehyde, bamboo ater, fiberboard, alkali treatment, urea formaldehyde

Judul: Studi Kasus Liver Neoplasia pada Anjing Shih Tzu
Abstrak: Liver neoplasia is the excessive and uncontrolled replication of hepatocytes that forms nodules visible in ultrasonography. The purpose of this study is to study and discuss the characteristic, diagnosis and treatment of liver neoplasm through the interpretation of ultrasonography and hematology in a Shih Tzu dog. Ultrasonography is conducted with a Chison Q8 ultrasound machine with a 5 to 7 MHz frequency convex probe on lateral recumbency. The blood cells, liver enzymes and nodules sizes were the main parameters in this study. The results in the period of three years from 2021 to 2023 were interpreted and supported with secondary data sources. The Shih Tzu dog is 14 years old in the year 2023 with a body weight of 5.21kg. No obvious clinical signs were observed during previous examinations. However, lethargy, vomiting and anorexia were recorded in its latest examination. Thrombocytosis, granulocytosis, high liver enzymes and hypoglycemia, which are some of the neoplastic clinical manifestations were also presented by this patient. Besides, liver neoplasm, spleen neoplasm and biliary sludge were the sonogram findings of this patient. The liver and spleen neoplasm was observed stable, while the biliary sludge volume fluctuated. The treatment strategy recorded is Ondansetron, Samylin®, Ornipural and Ursodeoxycholic acid.
Keyword: Blood biochemistry profile, Hematology, Liver Neoplasia, Shih Tzu, Ultrasonography