Judul: Pengembangan Serat Kenaf (Hibiscus Cannabinus L.) sebagai Filler Komposit Bermatriks Polimer (ABS) pada Aplikasi Helm
Abstrak: Research and development of kenaf biocomposite based on kenaf fiber in Acrylonitryle Butadiene Styrene (ABS) polymer matrixs using extrution and hot press method for helmet aplication had been conducted. Ball powder ratio (BPR) varied at 5:1 has been used to synthesize nanoparticle with size of 53.72 nm. Distribution of particle size based on the number of particle within in range 53.72 - 616.76 nm. The values of impact strength of long fiber biocomposites was 20.432 kJ m-2 while nanoparticle biocomposite was 6.4 kj m-2. This quality is due to its microstucture of 16.374 nm crystal size and cubic and monoclinic type of crystal structure. In addition, homogeneous distribution of nanoparticle filler and polymer matrixs have been analyzed using SEM has shown a similiar profile of surface compare to regular ABS polymer.
Keyword: ABS (Acrilonitrile Butadiene Stirene), Biocomposite, Kenaf fiber

Judul: Biokomposit filler nanopartikel serat kulit rotan sebagai material pengganti komposit sintetis fiber glass pada komponen kendaraan bermotor
Abstrak: The technology of bionanocomposite development in Indonesia had a good prospects. This is due to the availability of natural resources, especially agricultural products and waste which abundant and can be obtained throughout the year. The rattan bark is one of the agricultural waste that could be used as a source of fiber for bionanocomposite. The objective of this study was to synthesize and characterize bionanocomposite of polypropylene reinforced cellulose nanoparticles of rattan to be used to replace glass fiber as a filler in the composite. Cellulose was made of rattan bark in the form of nanoparticles by mechanical milling method, shaking, heating and ultrsonication in liquid media. These nanoparticles was used as a bionanocomposite filler which was prossesed by injection molding method with variation of concentration from 2% - 20%. The XRD result from the nanoparticles bark of rattan showed β-cellulose phase with monoclinic structure and crystal structure at 2θ = 220 (002). The density of nanoparticles was 0.2492 g cm-3 Keywords: Cellulose, extraction, nanoparticles, biodegradable, ultrasonication, . The surface morphology was elongated like a hollow cylinder. The size of the nanoparticles was 20 nm (TEM testing) with a homogeneous distribution volume of 32 %. Results from EDS and AAT indicated that bionanocomposite comprise of C, H and O as well as minerals Ca, K, Si. The mechanical properties from bionanocomposite of polypropylene reinforced cellulose nanoparticles of rattan was optimum at filler concentrations of 5%. The properties that comparable to synthetic composites were modulus of elasticity, hardness, tensile breaking elongation while, flexural strength and tensile yield strength were lower. This was due to the aglomeration in some areas so that the filler interphase bond was not optimal.
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Judul: Ragam jenis ektoparasit burung tekukur (Streptopelia chinensis) dan burung puter (Streptopelia bitorquata) di penangkaran
Abstrak: Spotted dove and Javan turtle dove are the bird species that are easily raised in captivity. Nevertheless, good management is required to successfully breed and raise the birds in captivity; otherwise, the condition may endanger the sustainability of the two bird species. Information on ectoparasites on the bodies of this bird as well as their captivity breeding has not been available, although admittedly taking ectoparasites from these bird families has much been done so that a research is obviously needed. This study aimed to find out various kinds of Spotted dove and Javan turtle dove ectoparasites and to learn various kinds of parasitic insects around the Spotted dove and Javan turtle dove cages. The study was conducted from April to June 2010. The methods of data collection included the general condition of the location, collection of ectoparasites specimens, processing and specimens identification. The data analysis was done descriptively and tabulated with the degree of infestation. The kinds of ectoparasites from the class of insects found in the body of Spotted dove were Goniocotes sp. and Columbicola columbae of phthiraptera order and Pseudolynchia canariensis of diptera order, and arachnida class, that is, tungau from the pterolichidae family. In terms of ectoparasites, Spotted dove and Javan turtle dove were similar, except that Javan turtle dove had no Pseudolynchia canariensis. Goniocotes sp. and Columbicola columbae were mallopaga order (biting lice) and were obligate. The kinds of parasitic insects in the vicinity of Spotted dove and Javan turtle dove cages were from the Ordo Diptera. The diptera classified as parasites included Anopheles, Culex, Psychodidae, Culicoides and Simulium, most of them vectors of disease. The presence of ectoparasites was closely related to how a breeding place is managed.
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