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: Analisis Pengaruh Variasi Komposisi Filler Kenaf Short Fiber terhadap Sifat Fisis-Mekanis Biokomposit pada Penerapan Helm Sepeda Motor.
Abstrak: Pengembangan rekayasa material khususnya dalam bidang komposit serat alam di Indonesia memiliki prospek yang sangat potensial karena ketersediaan sumber daya alam yang melimpah. Kenaf (Hibiscus cannabinus) merupakan salah satu sumber serat yang cukup potensial untuk dikembangkan dan dimanfaatkan secara optimal sebagai bahan pengisi dalam suatu komposit. Acrylonitrile Butadiene Styrene merupakan polimer yang banyak digunakan dalam industri karena memiliki sifat mekanik yang unggul. Penelitian ini memanfaatkan serat kenaf sebagai bahan penguat dalam biokomposit bermatriks polimer ABS. Karakteristik filler, parameter proses, dan sifat antarmuka filler dengan matriks merupakan faktor yang mempengaruhi sifat biokomposit. Selain itu, sifat material biokomposit juga ditentukan oleh struktur internal material. Tujuan dari penelitian ini adalah mengidentifikasi sifat serat sebagai bahan pengisi, mengkaji sifat permukaan, sifat fisis-mekanis biokomposit dan menghitung head injury criterion (HIC) pada helm sepeda motor. Sintesa serat kenaf dilakukan dengan metode mechanical milling dan pengayakan. Granular biokomposit disintesa dengan metode extruder. Hasil indeks alir leleh yang tinggi menunjukkan bahwa biokomposit dapat di cetak ulang dengan metode injeksi. Hasil pengujian menunjukkan sifat polar dari kelompok biokomposit meningkatkan nilai energi polar permukaan biokomposit. Komposisi filler juga mempengaruhi nilai tensile strength. Nilai impact strength dan Rockwell Hardness Number tidak berbeda secara signifikan, baik yang menggunakan polimer ABS original maupun polimer ABS recycle. Pencitraan granular biokomposit menunjukkan bahwa filler telah berikatan dengan matrik. Hal ini didukung dengan hasil Fourier Transform Infrared (FTIR) yang menunjukkan adanya ikatan baru yang terbentuk dalam biokomposit. Dari pengujian impact yang dilakukan pada helm biokomposit diperoleh nilai Head Injury Criterion (HIC) yang memenuhi SNI 1811:2007.
Keyword: ABS, biokomposit, head injury criterion, serat kenaf, sifat mekanik

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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