Judul: IPB (Bogor Agricultural University)
Abstrak: Aging is a decline in physiological functions of the body. In women, when entering old age, the function of ovaries is decline thus causing a reduction of estrogen hormone production. The decline of this hormone has an impact on the function of several organs, including the uterus, skin, and bones. One approach taken to improve organs function in the process of aging is hormone replacement therapy. Medically, hormone replacement therapy has been performed using synthetic hormone. However, the use of synthetic hormone replacement therapy could increase the risk of breast cancer and cardiovascular diseases. To decrease the unfavorable risk of treatment of synthetic hormone, the research was focused on the use of natural materials. Extract tempeh is a natural substance that contains phytoestrogens, having similar estrogen activity. This study was designed to determine the condition of an animal model for premenopausal and postmenopausal using uterus, skin, and bone quality parameters, and to study the role of tempeh extract for improvements premenopausal and postmenopausal conditions. The research was conducted in three stages. The first stage was designed to study the condition of an animal model for premenopausal and postmenopausal using uterus, skin, and bone quality parameters. The second stage was designed to study the potential effects of tempeh extract to improve the qualities of uterus, skin, and bone in premenopausal conditions. The third stage was designed to study the potential effects of tempeh extract to improve the qualities of uterus, skin, and bone in postmenopausal conditions. The results showed that rats aged 18 months were marked by a decline in serum progesterone concentrations, uterus collagen concentrations, DNA and RNA concentrations of the uterus, skin collagen concentrations, RNA concentrations of the skin, RNA concentrations of the bone, and these parameters were used as premenopausal conditions. Rats aged 30-36 months were marked by a drastic decline in serum progesterone concentrations, uterus collagen concentrations, RNA concentrations of the uterus, skin collagen concentrations, RNA concentrations of the skin, bone collagen concentrations, RNA concentrations of the bone, bone calcium concentrations, ratio of Ca/P in tibial bone, and bone density and this parameters were used as postmenopausal conditions. The ovariectomized rats having similar appearances to postmenopausal conditions were found in rats aged 12 months with 3 months postovariectomy. Supplementations of tempeh extract for two months in premenopausal rats could maintain the quality of the uterus, improved the qualities of skin and bone. At postmenopausal conditions, tempeh extract could improve the qualities of uterus, skin, and bone.
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Judul: Kinerja Organ Ovarium dan Uterus Umur Dewasa Setelah Pemberian Ekstrak Tempe Saat Usia Lepas Sapih.
Abstrak: Tempe is soybean product that contains phytoestrogen. This research was aimed to know the influence of tempe extract on reproduction performance of female rats. Twelve 21-days old female rats were divided into three groups, which were control group and two treatment group, which were given tempe extract 0.005 g/g body weight and 0.01 g/g body everyday for 28 days. Parameters observed were wet and dry weight, total DNA and total RNA of ovaries and uterus which were taken on 224 days old. Data were analyzed using ANOVA method and Duncan test with 95% confidence interval (a=0.05). Result showed that treatment group given tempe extract 0.005 g/g body weight and 0.01 g/g body weightincrease wet weight and total RNA of ovarium and uterus.
Keyword: tempe etanol extract, phytoestrogen, ovarium, uterus, total of DNA and RNA

Judul: Closed Knight’s Tour pada Papan Catur Berbentuk Persegi Panjang dengan Ukuran Maksimal 8 × 8
Abstrak: Closed Knight’s Tour merupakan langkah kuda yang mengunjungi setiap kotak pada papan catur tepat satu kali dengan langkah kuda berawal dan berakhir pada kotak yang sama. Graf yang terbentuk dari closed knight’s tour dinotasikan sebagai graf G(m,n), dengan m adalah banyaknya baris dan n adalah banyaknya kolom. Graf tersebut memuat Hamiltonian cycle. Sebuah graf terhubung G adalah graf bipartite jika dan hanya jika graf tersebut tidak memiliki cycle dengan panjang ganjil. Papan catur yang memenuhi syarat cukup untuk memiliki closed knight’s tour adalah papan catur berukuran 5 × 6, 5 × 8, 6 × 6, 6 × 7, 6 × 8, 7 × 8, dan 8 × 8.
Keyword: bipartite, closed knight’s tour, hamiltonian cycle, knight’s tour, teori graf