Judul: Karakteristik Cross Laminated Timber (CLT) Kayu Jabon Dengan Perekat Melamin Formaldehida (MF) Modifikasi Aplikasi Kempa Dingin
Abstrak: Cross Laminated Timber (CLT) adalah papan komposit yang terbuat dari kayu berlapis-lapis yang ditumpuk tegak lurus serta ditingkatkan stabilitas dimensinya. Tujuan dari penelitian ini adalah menganalisis sifat fisis dan mekanis CLT dari kayu jabon (Anthocephalus cadamba) dengan perekat MF modifikasi. Modifikasi perekat MF dilakukan untuk penggunaan kempa dingin. Berat labur CLT terdiri atas tiga variasi yaitu 250, 280 dan 300 g/m2. Evaluasi karakteristik perekat MF modifikasi berupa kadar padatan, waktu gelatinasi, viskositas, pH, FTIR dan DMA. Evaluasi karakteristik fisis dan mekanis berupa kerapatan, kadar air, delaminasi, MOE sejajar serat muka dan tegak lurus serat muka (flatwise & edgewise), MOR sejajar serat muka dan tegak lurus serat muka (flatwise & edgewise), tekan sejajar serat, tekan tegak lurus serat dan keteguhan rekat. Berat labur CLT hanya berpengaruh nyata terhadap nilai delaminasi dan keteguhan rekat. CLT dengan berat labur 300 g/m2 memiliki karakteristik sifat fisis mekanis yang paling optimum. Semakin tinggi berat labur perekat, semakin tinggi sifat fisis dan mekanisnya. Kualitas produk kurang baik karena tekanan kempa yang minim pada saat pengempaan CLT., Cross Laminated Timber (CLT) is a composite board made of multilayered timber that is stacked perpendicularly and its dimensional stability is enhanced. The objective of this research was to analyze the physical and mechanical properties of CLT from jabon wood (Anthocephalus cadamba) with modified MF adhesive. Modified MF adhesive was carried out for cold pressing applications. The glue spreads of CLT consist of three variations, namely 250, 280, and 300 g/m2. Evaluation of the characteristics of modified MF adhesive in the form of solids content, gelation time, viscosity, pH, FTIR, and DMA. Evaluation of the physical and mechanical properties was carried out including density, moisture content, delamination, MOE parallel and perpendicular to the face grain (flatwise & edgewise), MOR parallel and perpendicular to the face grain (flatwise & edgewise), compression parallel to the grain, compression perpendicular to the grain, and bonding strength. The glue spreads of CLT only significantly affected the value of delamination and bonding strength. CLT with a glue spread of 300 g/m2 has the most optimum mechanical and physical properties. The higher the glue spread, the higher the physical and mechanical properties. The poor product quality because of minimal compression pressure during CLT compression.
Keyword: CLT, glue spreads, jabon wood, melamine formaldehyde, modification

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: Egg drop syndrome 1976 ( EDS '76 )
Abstrak: Dalam Rancangan Pelita Ketiga (1979/80 - 1983/84) dijelaskan bahwa tujuan pembangunan antara lain adalah me ningkatkan mutu gizi pola komsumsi masyarakat melalui pe- ningkatan penyediaan karbohidrat, protein dan vitamin. Selain daging dan susu, telur adalah sumber protein hewani yang sangat penting. Oleh sebab itu dalam rangka peningkatan penyediaan protein pemerintah terus berusaha meningkatakan produksi telur dengan menggalakan peternak- an rakyat dan peternakan komersil yang telah maju. Peter- nakan yang telah maju dapat berfungsi sebagai pusat latih an dan pengembangan usaha peternakan rakyat disekitarnya. Mereka dapat sebagai sumber bibit dan tehnologi bagi pe ternakan rakyat. Menurut data dari Bulletin Statistik dan Ekonomi. Ter nak (1981) produksi telur dari Repelita I sampai Repelita III terus meningkat. Dalam Repelita I terdapat kenaikan produksi telur +4,2% per tahun. Dalam Repelita II produk- si telur meningkat +13,8% per tahun dan dalam 2 tahun Re- pelita III (1979-1980) terdapat kenaikan rata-rata produk si telur +6,93% per tahun. ...
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