Judul: Karakteristik Bambu Lapis sebagai Bahan Baku Meubel
Abstrak: Bamboo is one of the alternative raw materials for industry utilized to fulfil the demands on forestry sector. The purpose of this research is to analyze the characteristics of laminated bamboo and examine its suitability as a raw material in the manufacture of furniture. The raw materials used are andong bamboo and betung bamboo. The treatment of laminated bamboo here divided into four categories: laminated bamboo without node, node on face position and back, the position of the core node, as well as the position of the node on the face, core and back. The manufacture of laminated bamboo uses a 10 kg cm-2 for 3 hours as cold pressure. Laminated bamboo’s tested characteristics are density, water content, volume stability, MOE (Modulus of Elasticity) and MOR (Modulus of Rupture), and shearing strength referred to the ASTM D 143 standard. Results show that node’s presence on laminated bamboo can improve physical properties but reduce mechanical properties.
Keyword: Bogor Agricultural University (IPB), andong bamboo (Gigantochloa pseudoarundinasea), betung bamboo (Dendrocalamus asper (Schult.f.) Backer ex Heyne), cross laminated bamboo

Judul: Characteristics of Bamboo Flooring as a Solid Wood Substitute
Abstrak: Bambu sebagai substitusi bahan baku flooring sangat potensial untuk dikembangkan karena umumnya flooring terbuat dari kayu solid atau jenis kayu keras, yang memiliki kualitas tinggi tetapi ketersediaanya terbatas. Bambu dipilih dalam industri pengolahan kayu khususnya papan laminasi dikarenakan corak yang khas dan mengkilap, serta memiliki keluatan yang cukup tinggi. Dalam studi ini flooring dari bambu Indonesia diuji mengacu pada standar ISO 21629-1 bamboo flooring for indoor use, dan diharapkan mampu memberi rekomendasi penyusunan SNI untuk flooring bamboo. Pengujian meliputi modulus of elasticity (MOE), modulus of rupture (MOR), stain resist, adhesion test, abrassion test, dan hardness by pencil test. Formulasi susunan vertikal dengan 3 lapis coating secara keseluruhan mendapat nilai rata-rata paling baik dalam penelitian ini dengan nilai kadar air 12,8%, kerapatan 0,66 g/cm3, MOE 162.603 kg/cm2, MOR 1259.331 kg/cm2, adhesion test 2-4B, abrasion test 0,1149 g, hardness by pencil test 2-4H dibandingkan dengan formulasi lain dan flooring jati sebagai nilai kontrol. Inovasi produk bambu ini diharapkan dapat diproduksi secara komersial dengan sifat yang baik dan dapat dijadikan sebagai standar acuan dalam pembuatan SNI flooring bambu. Kata kunci: bambu, laminasi, lantai, pelapis, Bamboo as a substitute for flooring raw materials is very potential to be developed because generally flooring is made of solid wood or other types of hardwood which have high quality but limited availability. Bamboo is chosen in the wood processing industry, especially laminated board because of its distinctive and shiny pattern, and has a fairly high density. In this study, flooring from Indonesian bamboo was made by referring to the ISO 21629-1 bamboo flooring standard for indoor use, and is expected to be able to provide recommendations for the preparation of SNI for bamboo flooring. The tests include the Modulus of Elasticity (MOE), Modulus of Rupture (MOR), Stain resist, Adhesion Test, Abrasion Test, and Hardness by Pencil Test. The vertical arrangement formulation with 3 layers of coating overall got the best average score in this study with an value moisture content 12,8%, density 0,66 g/cm3, MOE 162,603 kg/cm2, MOR 1259,331 kg/cm2, adhesion test 2-4B, Abrasion Test 0.1149 g , Hardness by Pencil test 2-4H compared to other formulations and teak flooring as a control. This bamboo product innovation is expected to be produced commercially and with good characteristics and can be used as a reference standard in making Indonesian standart of bamboo flooring. Keywords: bamboo, coating, flooring, laminate
Keyword: bamboo, coating, flooring, laminate

Judul: Pengaruh vaksinasi terhadap dinamika populasi pada model SIR (Susceptible-Infected-Recovered)
Abstrak: SIR model can be used to model the spread of diseases in a closed population based on certain assumptions. In this research, the SIR model is formulated by including the factor of vaccination. As the result, the model has been shown to have two equilibrium points, i.e. disease free and endemic equilibrium. A simulation study is carried out to illustrate the model. The results show that some equilibrium points are asymptotically stable. Moreover, a minimum level of vaccination has been defined. For the vaccination level less than the minimum level, increase in the vaccination level results in decrease of the proportion of infected individuals in the corresponding equilibrium point. On the other hand, for the vaccination level greater than the minimum level, increase in the vaccination level results in decrease the proportion of susceptible individuals in the corresponding equilibrium point. Furthermore, when vaccination level is greater than the minimum level, it is found that the time needed for the disease to extinct is shorter.
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