Judul: The Quality of PinuspinasterArBinenn Particleboards Using Natural Adhesive Made of Corn Starch, Tannin and Chitosan
Abstrak: The development and optimization of a new, environment-friendly adhesive made from abundant and renewable cornstarch, tannin and chitosan is described in this study. At present, the production of wood composites mainly relies on petrochemical and formaldehyde-based adhesives such as phenol-formaldehyde (PF) resins and urea-formaldehyde (UF) resins. Natural adhesive is not only environmentally friendly but also less expensive as compared to other exterior binders used in wood composite industry. The objective of this study is to evaluate the quality of adhesive and particleboard produced. This research describes performances of natural adhesive obtained from cornstarch, tannin and chitosan (solid content, viscosity, gel time, pH and bond strength). Results describe physical properties of all particleboard production according to standard EN 323, 2004. Mechanical properties of particleboard did not fulfilled standard EN 312 for IB, MOR and MOE.
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Judul: Characteristics of Water Soluble Chitosan and Citric Acid Adhesive Corn Husk Particle Board: The Effect of Board Density and Thickness
Abstrak: Keterbatasan bahan baku industri perkayuan mendorong pemanfaatan material berlignoselulosa, kelobot jagung sebagai bahan pengganti kayu, seperti papan partikel. Penelitian ini bertujuan mengetahui pengaruh variasi kerapatan dan ketebalan terhadap sifat fisik, mekanik, akustik, dan termal papan partikel dengan perekat campuran kitosan larut air dan asam sitrat 15%. Papan memiliki variasi kerapatan (0,6 dan 0,8 g/cm3) dan variasi ketebalan (3, 6, dan 9 mm). Ukuran partikel kelobot jagung 4-14 mesh. Papan berukuran 25×25 cm diproduksi menggunakan kempa panas dengan suhu 180°C dan tekanan 5 MPa (3 mm) dan 10 MPa (6 dan 9 mm) selama 15 menit. Hasil uji kerapatan sebesar 0,65-0,84 g/cm3, kadar air 3,14-13,04%, pengembangan tebal 59,08-113,92%, daya serap air 78,18-180,74%, MOE 4029-7005 kgf/cm2, MOR 53-146 kgf/cm2, IB 0,71-6,67 kgf/cm2, SHP 42,34-103,44 kgf. Koefisien absorpsi suara (α) pada uji akustik sudah memenuhi standar ISO 11654 dan termasuk ke dalam kelas D untuk serapan normal. Papan partikel bersifat isolator panas dengan nilai KT 0,16-0,21 W/m.K. Uji wettability papan bersifat hidrofilik dengan sudut kontak 65°-89°. Variasi papan partikel kerapatan 0,8 g/cm3 dan ketebalan 6 mm menghasilkan kualitas terbaik sesuai standar SNI 03-2105-2006., The limited raw materials of the wood industry encourage the use of lignocellulose materials, corn husk as a substitute for wood, such as particle board. This study aims to determine the effect of density and thickness variations on the physical, mechanical, acoustic, and thermal properties of particle board with a mixture 15% of water soluble chitosan and citric acid. Boards have density variations (0.6 and 0.8 g/cm3) and thickness variations (3, 6, and 9 mm). The particle size of corn husk is 4-14 mesh. The 25×25 cm board is manufactured using a hydraulic hot press with a temperature of 180°C and pressures of 5 MPa (3 mm) and 10 MPa (6 and 9 mm) for 15 minutes. Test results of density 0.65-0.84 g/cm3, moisture content 3.14-13.04%, thickness swelling 59.08-113.92%, water absorption 78.18-180.74%, MOE 4029-7005 kgf/cm2, MOR 53-146 kgf/cm2, IB 0.71-6.67 kgf/cm2, SHP 42.34-103.44 kgf. The sound absorption coefficient (α) in the acoustic test has fulfilled the requirement of ISO 11654 standards and is included in class D for normal absorption. Particle board is a heat insulator with a KT value of 0.16-0.21 W/m.K. The board wettability test is hydrophilic with a contact angle of 65°-89°. Particle board variations of 0.8 g/cm3 density and 6 mm thickness produce the best quality according to SNI 03-2105-2006 standards.
Keyword: citric acid, corn husk, water soluble chitosan, particle board

Judul: Infeksi Cacing Jantung Dirofilaria Immitis, Railliet & Henry, 1911 Pada Anjing
Abstrak: Cacing Dirofilaria immitis dewasa yang tinggal dalm ventrikel kanan jantung anjing, sering kali menimbulkan gejala klinis yang cukup berat. Cacing Tersebut menghasilkan mikrofilaria yang selanjutnya berkembang menjadi larva infektif dalam saluran malphigi induk semang entara, yaitu nyamuk dari genus Culex, Aedes dan Anopheles.
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