Judul: Analysis of Characteristics and Feasibility of Wool Fiber as an Alternative Material for Molded Fiber Packaging
Abstrak: Wol domba di Indonesia memiliki karakteristik yang unik, sehingga dapat menjadi daya tarik dan peluang untuk menambah nilai pengembangan produk yang akan diolah. Molded Fibre Packaging (MFP) adalah bentuk kemasan yang melindungi produk dari kerusakan dan memfasilitasi pengenalan merek. Penelitian ini bertujuan menganalisis karakteristik dan kelayakan serat wol sebagai bahan alternatif untuk produk MFP. Penelitian ini menggunakan analisis data rancangan acak lengkap (RAL) dengan penambahan serat wol pada konsentrasi yang berbeda dengan tiga kali ulangan yaitu 1). Tanpa serat wol atau pulp 100% (kontrol); 2). Serat wol 25% dan pulp 75% dan 3). Serat wol 50% dan pulp 50%. Data yang diperoleh dianalisis dengan uji ANOVA satu faktor dan diuji lanjut dengan uji tukey. Hasil penelitian menunjukkah bahwa terdapat perbedaan nyata (P<0,05), pada variabel ketebalan, warna, tekstur dan kerapatan. Sedang pada variabel gramatur, indeks ketahanan tarik, indeks ketahanan sobek, dan penampilan umum tidak terdapat perbedaan nyata (P>0,05). Dapat disimpulkan bahwa penerimaan konsumen terhadap MFP wol dinyatakan cukup layak pada standar uji mutu, dengan ketentuan produk sebagai fungsi kemasan internal., Indonesian sheep wool has unique characteristics, thus having the potential to add value to a product. Molded Fiber Packaging (MFP) is a form of packaging to protect the product from damage and to facilitate brand introduction. This research aims to analyze characteristics and appropriateness of wool fiber as an alternative component of MFP. This research used Fully Randomized Design with different concentrations of wool fiber additions with 3 replications. The replications were: 1. Without wool fiber/100% pulp (control); 25% wool fiber and 75% pulp; and 3. 50% wool fiber and 50% pulp. The data was analyzed with one factor ANOVA test and continued with Tukey test. The result showed that there were significant differences (P<0.05) in thickness, color, texture and density. While in gramature, tensile strength index, tear resistance index and general appearance there was no significant differences (P>0.05). Can be concluded that consumer acceptance of the MFP wool is stated to be quite adequate according to the quality test standard, provided that the product is an internal packaging function.
Keyword: molded fiber packaging, pulp, strength index, tear index, wool

Judul: Sifat Fisis-Mekanis Papan Partikel dari Serbuk Bulu Domba, Serbuk Gergaji, dan Serutan Kayu Sengon (Paraserianthes falcataria)
Abstrak: Indonesian or local sheep is classified as a meat type. It is not classified as a wool type because the wool yielded are coarse, so it is not optimally used. Wool can be added in the making of particle board because of its strength, pressure resistance, good insulator, and sound absorption properties. Paraserianthes falcataria (Sengon) saw dust and wood shaving are wood processing waste which can be used as particle board because it contains lignocellulose fiber. This research was to find the best formulation of wool dust (chopped wool at the length of 2-3 mm), saw dust, wood shaving and adhesive concentration used (urea formaldehida). The experiment will be conducted as a factorial experiment with two factors. The factors are wool dust, sawdust, and wood shaving combination (0% :60% : 40% ; 10% : 50% : 40% ; 20% : 40% : 40% ; 30% : 30% : 40%) and adhesive concentration (16, 18, and 20%). The parameter scored are the density, moisture content, thickness swelling, water absorbing capacity, modulus of rupture, modulus of elasticity, internal bond and strength of screw holding power. Any significant differences data will be further analyzed with Polynomial Orthogonal. The result showed that wool dust significantly improved the water absorbing capacity, modulus of rupture, and modulus of elasticity. The urea formaldehida adhesive significantly improved the density and water absorbing capacity. The interaction of two factors significantly improved the thickness swelling, internal bond, and strength of screw holding power. The data from this research showed that the number of density between 0,69-0,78 g/cm3, moisture containt with mean 6,49%, thickness swelling between 32,36-83,9%, water absorbing capacity beetween 89,04-169,15%, modulus of rupture between 68,4- 121,8 kgf/cm2, modulus of elasticity between 671,84-1381,51 kgf/cm2, internal bond between 0,44-1,3 kgf/cm2, and strength of screw holding power between 6,0-22,3 kg. To find out the proportion of the product that suite the JIS A 5908 and SNI 03-2105, the distribution of the data was estabilished and the area under the normal curve (represent the proportion) was examined. From the stand point of density, moisture containt and modulus of rupture more than 95% of the product suited to the standards. However, from the stand point of thickness swelling, modulus of elasticity, internal bond, and strength of screw holding power none of the product suited to the standards.
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Judul: Dynamical System of Hepatitis B in Three Groups with Vaccination
Abstrak: The aim of this study is to modify the hepatitis B transmission model in three age groups involving vaccination from the model conducted by Zhoe and Zhang.The method used is to analyze the stability of the fixed point and its basic reproduction number (R_0). Performed stability analysis and numerical simulation to see population dynamics. Next, a sensitivity analysis of the parameters was carried out to see its effect on R_0. From the analysis obtained two fixed points, namely non-endemic and endemic fixed points. Non-endemic fixed points are locally asymptotically stable if R_0 <1 Meanwhile, the endemic fixed point is locally asymptotically stable if R_0 > 1. Hepatitis vaccination affects the number of susceptible population, because the more successful the vaccination, the smaller the number of susceptible populations so that the smaller the population will be infected.
Keyword: Dynamic, Hepatitis B, Vaccine, Mathematical model