Judul: Deteksi Secara Imunohistokimia Imunoglobulin A (IgA) pada Usus Halus Tikus yang Diberi Bakteri Asam Laktat (BAL) dan Enteropatogenik Escherichia coli (EPEC)
Abstrak: This study was conducted to evaluate the effect of Lactobacillus plantarum and Lactobacillus fermentum on the immunohistochemical profile of immunoglobulin A (IgA) and the intestinal mucosa thickness of Enteropathogenic E. coli (EPEC) treated rats. A total of 90 male Sparague Dawley rats were used in this study. They were divided into 6 groups: (1) negative control treated group, (2) Lactobacillus plantarum treated group, (3) Lactobacillus fermentum treated group, (4) Lactobacillus plantarum and EPEC treated group, (5) Lactobacillus fermentum and EPEC treated group, and (6) EPEC treated (positive control) group. The results showed that both Lactobacillus fermentum and Lactobacillus plantarum treatment for 2 to 3 weeks increased the thickness of rat’s mucosal small intestine. In the EPEC treated rats, either Lactobacillus fermentum and Lactobacillus plantarum treatment for 2 weeks increased the thickness of rat’s mucosal small intestine. Lactobacillus fermentum treatment for 2 weeks increased the content of IgA in rat’s mucosal small intestine at both conditions; with and without EPEC treatment. Lactobacillus plantarum treatment for 2 weeks only increased the content of IgA in rat’s duodenum and jejunum, while in the EPEC treated rats, Lactobacillus plantarum treatment for 2 weeks could maintained the content of IgA in rat’s mucosal small intestine. Lactobacillus fermentum gave better effect than Lactobacillus plantarum on increasing the content of IgA in rat’s small intestine
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Judul: Profil imunohistokimia antioksidan superoksida dismutase (SOD) pada usus halus tikus yang diberi probiotik dan enteropathogenic e. coli (EPEC)
Abstrak: The study was conducted to analyse the influence of probiotic Lactobacillus plantarum and Lactobacillus fermentum on immunohistochemical profile of antioxidant superoxide dismutase (Cu,Zn-SOD) in small intestine of Enteropathogenic E. coli (EPEC)-treated Rats. A total of 90 male rats (Sprague Dawley) were used in this study. They were devided into 6 groups; negative control group (A), Lactobacillus plantarum treated group (B), Lactobacillus fermentum treated group (C), Lactobacillus plantarum and EPEC treated group (D), Lactobacillus fermentum and EPEC treated group (E), and EPEC treated group (F). The content of antioxidant cooper,zinc superoxide dismutase (Cu,Zn-SOD) were detected immunohistochemically using monoclonal antibody of Cu,Zn-SOD. The result showed that Lactobacillus fermentum treatment increased the content of Cu,Zn-SOD in rats small intestine at both condition; without EPEC treatment and with EPEC treatment. However Lactobacillus plantarum increased the content of Cu,Zn-SOD in rats small intestine only at condition without EPEC treatment. While, at EPEC treated rats, the lactobacillus plantarum treatment could maintain the content of Cu,Zn-SOD as well as negative control group. Lactobacillus fermentum showed better effect on increasing the content of Cu,Zn-SOD in rats small intestine.
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Judul: Pemanenan Energi Listrik dari Kincir Angin Vertikal
Abstrak: Usaha pemanenan energi angin di Indonesia masih sedikit. Sampai Tahun 2016 hanya 3.54 MW alat pemanenan energi angin yang sudah terpasang. Kendala utamanya ialah dibutuhkan investasi yang besar untuk membuatnya. Pembuatan kincir angin dengan ukuran yang lebih kecil dengan bahan yang dapat dibeli di pasar lokal menjadi solusi agar pembuatan kincir angin lebih ekonomis. Pembuatan kincir vertikal tipe Savonius dapat menjadi solusinya. Kincir vertikal Savonius dapat beroperasi pada kecepatan < 3 m/s dan ketinggian < 50 m. Kincir angin ini terdiri dari tiga sistem, yaitu generator, rotor kincir dan transmisi pulley-belt. Generator dibuat dari modifikasi motor AC dan magnet neodymium. Rotor kincir dibuat dari pipa PVC 4”, pipa alumunium ¾”, dan papan polikarbonat. Transmisi pulley-belt dibuat dari plastik dan karet. Kincir ini membutuhkan gaya minimal 3 N untuk dapat berputar atau torsi minimalnya 0.75 Nm. Kecepatan angin yang dibutuhkan untuk merotasikannya sebesar 1.9 m/s. Daya maksimal yang dapat dihasilkan ialah 5.76 watt berupa tegangan sebesar 36 volt dan arus 160 mA.
Keyword: energi terbarukan, generator, motor AC, sudu Savonius