Judul: Analisis Tebu Tertinggal di Kebun pada Pabrik Gula Subang, Jawa Barat
Abstrak: Dalam rangka maksimalisasi perolehan gula akibat berkurangnya ketersediaan lahan dan makin meningkatnya pembiayaan, maka penekanan kehilangan tebu sampai pada tahap serendah-rendahnya merupakan ha1 yang mendesak. Salah satu cara penekanan tersebut adalah dengan diupayakannya suatu cara penebangan di mana dalam pelaksanaannya ditekankan pada upaya memperkecil jumlah tebu layak giling yang tertinggal di kebun. Hal ini dapat dilakukan dengan menganalisis kerugian yang ditimbulkan oleh tebu yang tertinggal di kebun tersebut pada waktu panen dan menentukan alternatif pemanenan yang baik untuk mengurangi tertinggalnya tebu tersebut.
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Judul: Analisis keprasan optimal per tanaman tebu untuk produksi gula studi kasus di PG Kremboong-Sidoarjo
Abstrak: Kebijaksanaan pemerintah untuk melestarikan swasembada gula merupakan tantangan berat bagi industri gula di ; Indonesia. Beberapa langkah pemikiran yang perlu dilakukan dalam upaya meningkatkan produksi gula adalah pemilihan varietas yang tepat, perbaikan faktor lingkungan dan memacu proses pertumbuhan tanaman tebu. Mengusahakan tanaman tebu sampai beberapa kali keprasan merupakan salah satu ciri budidaya teSu dilahan kering. Tujuar. penelitian ini dalah menentukan tingkat keprasan ymq paling optimal untuk di proses di pabrik gula serta menentukan biaya keprasan, biaya produksi dan hasil produksi yanq diperoleh.
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Judul: Provision of vaccine effectiveness against Ichthyophthirius multifiliis common carp (Cyprinus carpio L) at different temperatures of media
Abstrak: The aims of this study were to assess the physiological and haematological responses of fish due to different water temperatures, Ichthyophthirius multifiliis (ich) infection, and vaccination with ich theront stadia. The research was conducted in three stages. The first stage was designed to determine the temperature range that could cause stress in fish and had potency to cause ich infection. In the second stage, fish was infected with ich. The last stage was carried out to investigate the effect of vaccination. Physiological changes in fish from each stage were determined. The results of the first stage showed that cortisol levels at 20, 24, and 28⁰C and glucose levels at 24 and 28oC increased until 21st day. Fish that was kept at 24oC had the lowest survival rate (87±3.35%) and fish that was kept at 32oC had the highest survival rate (100%). In the second stage, infected fish at 20oC was under great stress, which was characterized by the increase in cortisol levels by 51.38% on 3rd day, increase in glucose levels by 60.93%, decrease in osmolarity by 18.40%, decrease lymphocytes percentage by 16.44%, and the lowest survival rate (58.11±2.16%). The damage that was affected by I. multifiliis could be seen by the presence of hypercellular, many goblet cells, and infiltration of lymphocytes cells. Lastly, vaccination caused the decrease in cortisol levels and increase in glucose levels until 14th day. The prevalence of I. multifiliis in the vaccinated fish decreased with the increase in temperature, and I. multifiliis prevalence at 20⁰C was 80.03±10.00% and at 28⁰C was 0%, and the highest survival rate was obtained at 28⁰C (100%).
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