Judul: Efek Berbagai Jenis Pakan Kedelai (Glycine max L. Merrill) terhadap Produksi Hormon Estrogen pada Tikus Sprague Dawley Betina
Abstrak: Soybean (Glycine max L. Merrill) is a plant that contains high nutritional components. Researchs suggested that soybean contains high phytoestrogens, called isoflavones. This study aimed to measure the effect of soy feed contained isoflavones with three different concentration through the estrogen hormone level of Sprague Dawley female rats. There are 7 groups treatment (each group of 4 rats) which consists of a negative control group with feed casein (KN), 3 groups of feed with soybean powder 100% concentration (K1), 50% (K2), and 10% (K3) and 3 three other groups were given feed with soy protein isolate 100% concentration (IPK1), 50% (IPK2), and 10% (IPK3). The concentration of the hormone estrogen in the blood serum was measured by ELISA method (Enzyme-Linked Immunosorbent Assay). Results showed the source of isoflavones and the different protein levels were significantly different (p <0.05) the levels of the hormone estrogen of female mice with soybean powder treatment and not significantly different (p> 0.05) for soy protein isolate treatment. The concentration of the hormone estrogen increased as fed treatment soy 10% (K3), isolate 10% (IPK3), 50% (IPK2), and 100% (IPK1). Its concentration is 1455 ± 942.15 pg/mL, 939 ± 430.30 pg/mL, 869.44 ± 685.38 pg/mL, and 850 ± 46.39 pg/mL
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Judul: Perubahan Kadar Hormon Estrogen Pada Tikus Yang Diberi Tepung Kedelai Dan Tepung Tempe
Abstrak: Soybean and tempeh contains isoflavon compound. The isoflavon molecule structure is similar with endogen estrogen. Hence, isoflavon is able to bond with estrogen reseptor so it can replace estrogen function. Estrogen hormone level have a large variation depend on estrus cycle phase. The objective of the research was to prove exogenous estrogen that produced by soybean flour and tempeh flour increases estrogen hormone level of ovariectomy rat, and to compare the ovariectomy rat estrogen hormone level that given soybean flour and tempeh flour. The experimental method used in this research is Randomized complete design with 6 block of treatments and 5 times repetition. The block of treatments are non-ovariectomy rat fed by pelet/control (Non-ov K), non-ovariectomy rat fed by 10 g dry weight/100 g body weight/day soybean flour (Non-ov Kd), nonovariectomy rat fed by 10 g dry weight/100 g body weight/day tempeh flour (Non-ov T), ovariectomy rat fed by pelet/control (Ov K), ovariectomy rat fed by 10 g dry weight/100 g body weight/day soybean flour (Ov Kd), ovariectomy rat fed by 10 g dry weight/100 g body weight/day tempeh flour (Ov T). The data of estrogen level is analyzed by Analysis of Variance (ANOVA) and then continued by Duncan Multiple Range Test at 95% confidence interval (5% significance level). Non-ovariectomy rat that given tempeh flour have longer estrus cycle than the non ovariectomy rat that given soybean flour. The isoflavon contained on the tempeh flour and soybean flour have an effect on vagina epitel, that is the proliferation and cornification on vagina epitel cell. Estrogen hormone level on non-ovariectomy rat fed by tempeh flour is higher than the estrogen hormone level on non- ovariectomy rat fed by soybean flour. The length of the estrus phase between the ovariectomy rat fed by tempeh flour, and ovariectomy rat fed by soybean flour equal to non ovariectomy rat fed by pelet. The added of soybean flour and tempeh flour to ovariectomy rat optimize estrogen hormone in order to happening the estrus phase. The added of tempeh flour to non ovariectomy and ovariectomy rat is better than the soybean flour.
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Judul: Penentuan Posisi Autonomous Underwater Vehicle (AUV) dengan Metode Dead Reckoning
Abstrak: AUV adalah wahana otonom bawah air yang memiliki berbagai sensor untuk akuisisi data. Alat ini dapat memudahkan survey bawah air karena bentuknya yang ringan. Misi AUV dibuat lalu disimpan ke dalam memori AUV. Penyelesaian misi memerlukan sistem navigasi yang akurat. GPS tidak bisa bekerja di dalam air sehingga dibutuhkan metode navigasi selain GPS. Dead reckoning adalah metode penentuan posisi dengan menghitung arah dan gerak AUV. Persamaan model kecepatan konstan digunakan untuk mengestimasi posisi pada saat t. Akurasi metode ini dipengaruhi banyak hal termasuk kesalahan sensor dan kondisi lingkungan. Misi dilakukan dalam 2 jalur berbeda sebanyak 3 kali. Jalur yang memiliki panjang lebih besar mempunyai kesalahan posisi yang tinggi. Ha ini disebabkan galat yang dihasilkan dead reckoning terakumulasi selama misi. Kesalahan tersebut dapat diatasi dengan memperhitungkan kondisi lingkungan pada program dead reckoning.
Keyword: AUV, DVL, Dead Reckoning, Navigasi