Judul: Detennining the boundary of Edge and Core Area of Remnant Forest in Balai Raja Wildlife Sanctuary, Riau Province
Abstrak: Over the period 1985 to 2004, forest land cover in Balai Raja Wildlife Sanctuary reduced from 13,705.19 hectares to 705.85 hectares of fragmented forest. The reduction was attributed to illegal logging, mining, agriculture, oil palm plantation and settlement. In spite of the large loss, the remnant fragmented forest still serves a very important purpose, it is the last habitat for the Sumatran wildlife, however, there is no little or no infonnation on the characteristics of this forest, such as, the diversity of plant, indicator species and stand structure of forest edge. This study was designed to fill the knowledge gap, specifically, to detennine boundaries, diversity, stand structure of forest edge which is essential as a basis of infonnation in managing this area. Through field visits, seedlings, sapling poles, and trees species were identified and inventoried. The data were then used to carry out Bray Curtis analysis. Results show that the boundaries of forest edge range from 20-80 meters. Species of macaranga, mallotus and aporosa were identified as the indicator species. The dominant species in sequence for seedling, sapling, pole and tree were Alphitonia incana, Mischocarpus sundaicus, Macaranga gigantean and Shorea canina.
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Judul: Analisis gap kebijakan pengelolan kawasan suaka margasatwa : Kasus di SM Balairaja, Bengkalis, Riau
Abstrak: Conservation area represents pillar of ecosystem stabilization that gives various protections for ecology processes and a lot of species varieties, as treasure for future that the benefit is still unknown. By now, the big potency that is had by conservation area faces serious threats therefore the area management becomes an urgent agenda. The research objective is to identify and evaluate management policy of SM Balairaja area, also formulate and give policies alternative recommendation of SM Balairaja management. The research was located in Mandau District of Bengkalis Regency at five of study villages: Pematang Pudu, Balairaja, Petani, Pinggir and Tengganau during March until September 2004. Data sources were taken by direct observation and result from researches that were part of “Baseline Study on Balairaja Conservation Area, Riau” supported by PPLH-IPB and PT Caltex Pacific Indonesia. The variety, richness and threat that were faced by vegetation and wild animal described descriptively, social culture activities were identified by FGD method (Focus Discussion Group) and deep interview, then policy alternative used AHP method (Analytical Hierarchy Process). Result showed the variety and richness rare of vegetation and wild animal in SM Balairaja area happened because of government compilation through contradictive codes, also the destructiveness activities involvement of economic social without strict law enforcement since area had been specified as wilderness area. AHP result gave the main policy of priority alternative in area management that was taken by Non government. The focus of program be on society management by management priority on social culture factor. Priority scale that was chosen showing un sensitive to preferences change of PHKA, BKSDA, PT.CPI, LSM, and Society. Beside that, research showed the stakeholders perception was different with the exist codes.
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Judul: Disain Model Alat pasteurisasi susu Otomatis
Abstrak: Pada umumnya, bahan pangan mempunyai sifat mudah rusak. Kerusakan ini tergantung dari jenis bahan pangannya, dapat berlangsung secara lambat misalnya pada biji-bijian, atau dapat berlangsung secara sangat cepat misalnya pada susu. Salah satu cara pengawetan bahan pangan adalah dengan menggunakan energi panas, misalnya cara pasteurisasi. Pasteurisasi merupakan suatu cara atau langkah dalam pengawetan yang biasa dilakukan pada susu. Pengaruh pasteurisasi susu antara sebagai berikut; air susu lebih lama dapat disimpan, раda suhu rendah malahan dapat disimpan beberapa hari; air su- su tidak lagi mengandung kuman-kuman patogen. Penelitian ini bertujuan untuk merancang suatu model alat pasteurisasi susu dengan memanfaatkan teknologi elektronik pada alat kontrol suhunya. Model alat pasteurisasi susu otomatis yang didisain terdiri dari dua bagian, yaitu alat pasteurisasi susu dan alat pengatur suhu. Bagian alat pasteurisasi terdiri dari tanki pasteurisasi, tanki medium pemanas, pompa dan unit pencatu daya. Sedangkan bagian alat pengatur suhu terdiri dari unit pengindera, unit penguat tegangan, unit penanding (comparator), unit penguat arus, unit kontrol (relai) dan unit pencatu daya. Dari hasil pengujian yang dilakukan terhadap keseragaman suhu, model alat pasteurisasi yang dibuat masih menghasilkan perbedaan suhu selama proses pasteurisasi. Waktu yang dibutuhkan untuk mencapai suhu pasteurisasi (63°C) dengan suhu awal 27, 29 dan 31.10 °C adalah berturut-turut 14.833, 14.733 dan 11.833 menit. Alat pengatur suhu yang dibuat dapat mencakup kisaran pengaturan suhu dari 40 sampai 75 °C, dengan selang kepekaan sebesar 0.003 volt. Penelitian lebih lanjut terhadap konstruksi tanki pasteurisasi dan sistim pengadukkannya perlu dilakukan untuk memperoleh tingkat keseragaman suhu yang lebih baik, begitu juga terhadap bahan pembalut sensor, kestabilan alat pengatur suhu, pengembangan rangkaian unit penanding (comparator) dan unit penguat serta kestabilan tegangan pada setiap unit fungsional alat pengatur suhu diperlukan untuk mempertinggi kualitas dan kemampuannya.
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