Judul: Deflection analysis at the proportional and maximum limit on cross laminated timber from sengon (paraserianthes falcataria l. Nielsen) and manii (maesopsis eminii engl.)
Abstrak: Cross Laminated Timber (CLT) merupakan papan laminasi yang pada saat ini sudah dapat digunakan sebagai komponen bangunan rumah, dek jembatan, hingga struktur utama gedung bertingkat. Tujuan penelitian ini untuk menentukan besar pengaruh kombinasi tebal dan orientasi sudut lamina terhadap defleksi pada batas proporsional dan maksimum panel CLT menggunakan sambungan paku dan perekat. Data mekanis yang diolah yaitu besar beban dan defleksi pada batas proporsional dan maksimum dari kurva gaya-defleksi panel CLT yang dibebani lentur statis. Hasil penelitian menunjukkan perlakuan kombinasi tebal dan orientasi sudut tidak mempengaruhi defleksi untuk setiap jenis panel CLT. Defleksi memiliki nilai kisaran yang kecil sehingga sulit untuk menentukan faktor yang mempengaruhi besar defleksi tersebut. Selain itu berdasarkan seluruh hasil yang didapat bahwa pada penggunaan sambungan panel CLT, perekat merupakan sambungan yang paling stabil dibandingkan sambungan paku., Cross Laminated Timber (CLT) is a wood composed product of some lamina that used these days for house component, bridge deck, and main structure for multistoried buildings. The purpose of this research determined the influence of lamina thickness combination and angle orientation toward deflection at the proportional and maximum limit on CLT panel using nails and adhesive connections. Mechanic data which processed is loading value and deflection on proportional and maximum limit from deflection force curve from CLT panel from static loading. The result of this research showed the treatment combination of thickness and laminated angle orientation did not affect deflection for each type of CLT panels. Deflection has a small range of values therefore difficult to determine factors that affected deflection. In addition, based on all the results obtained that the use of CLT panel connections, the adhesive is the most stable than a nail connection.
Keyword: batas maksimum, batas proporsional, beban, CLT, defleksi

Judul: Pengembangan Produk Cross Laminated Timber Melalui Pemanfaatan Kayu Sengon (Falcataria moluccana (Miq.) Barneby & J. W. Grimes) Menggunakan Sambungan Paku
Abstrak: The availability of good quality and big diameter wood in the natural forest, recently keep decreasing. It makes consumer should turn into public forest to fulfill their needs. However, low quality wood from public forest can be modified into product creation for structural material with high quality, which is cross laminated timber (CLT). CLT is created by arranging 3 to 7 laminas are crossed and then glued and compressed hydraulically on the entire surface or can be nailed (Perkins and McCloskey 2010). One of CLT product modification is by doing of combination lamina thickness and orientation angle. This study was aimed to determine the effect of thickness and orientation angle lamina comnbinations to the cross laminated timber panel product of Sengon wood (Falcataria moluccana (Miq.) Barneby & J. W. Grimes) by using nail connection. The average of nail CLT panel density (0.37 g/cm3) larger than control board and adhesive CLT. The average of nail CLT panel moisture content (4.19%) lower than control board and higher than adhesive CLT and not far different from the average of Bogor moisture content ±15%. The volume shrinkage of nail CLT panel (5.07%) is lower than control board and adhesive CLT, but it‟s not far different. The average of volume swelling nail CLT panel (3.74%) lower than control board and adhesive CLT. The average of MOE nail CLT panel is only 20% from control board and only about 15% from adhesive CLT and MOR. Nail CLT nail panel is able to reach 82% from control board and about 78% from adhesive CLT. The MOR of nail CLT panel is good but MOE isn‟t better than adhesive CLT. The average of lateral force nail CLT panel, smaller than stated by PPKI 1961. The average of shear strength nail CLT panel is larger than adhesive CLT panel. CLT panel with laminas 1,67 cm is the most optimum panel according to all tests result
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Judul: Infeksin virus rota pada anak babi
Abstrak: Virus Rota sudah lama diduga sebagai salah satu penyebab diare pada anak babi yang baru dilahirkan. Hal ini diperkuat dengan berhasilnya Mebus dan kawan-kawan mengidentifikasi virus Rota pada kejadian diare yang ter jadi pada anak sapi yang baru dilahirkan. Infeksi virus Rota merupakan hal yang serius, kejadian yang mewabah pernah dilaporkan di Amerika Serikat, Inggris, Kanada dan Australia. Sedangkan kejadian di Indonesia yang dihubungkan dengan infeksi virus Rota belum dilaporkan. Virus Rota termasuk keluarga Reo viridea. Sesuai dengan namanya, virus Rota menyerupai roda (Rota = Wheel), mengandung asam nukleat (nucleid acid) yang berupa asam nukleat ribo (ribo nucleid acid, RNA) dan berserabut ganda (double stranded), tidak mempunyai selubung (envelop atau peplos). Hewan rentan adalah hewan yang berumur sangat muda. Selain menyerang babi, dapat pula menyerang sapi, domba, rusa, anjing, kucing, tikus, kelinci, unggas dan manusia. ...
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