Judul: Siklus Reproduksi Anak Tikus Dari Induk Yang Diberi Ekstrak Etanol Akar Purwoceng Selama 13–21 Hari Kebuntingan.
Abstrak: Purwoceng (Pimpinella alpina) is one of Indonesian medicinal herbals that was originating from high altitudes area such as Dieng at Central Java. Its root has an efficacious as aphrodisiac because of its compound such as isoflavon group. The aim of this study was to test the efficacy of phytoestrogens contained in purwoceng (Pimpinella alpina) on the descended testes, vaginal opening and estrous cycle. This study used two groups of pregnant rats. The first group consist of four pregnant rats which were given purwoceng root ethanol extract with dose of 25 mg / ml per 300 g BW orally at 13–21 gestation. The second group of rats were given water at the 13th day of gestation to 21 as a control. All pregnant rats were selected rats which has delivered 8–9 pups. The results showed that time of descended testes and vaginal opening of purwoceng group was earlier than control, descended testes of purwoceng group was on day 29 and vaginal opening was on day 36. Descended testes of control group was on day 34 and vaginal opening was on day 38. Length of estrous cycle in purwoceng group were longer than control with proestrus and estrus phase were also longer than control.
Keyword: Estrous cycle, ethanol extracted, purwoceng roots, Rattus norvegicus, vaginal opening

Judul: Study of Androgenic Effect of Ethanolic Extract of Root Purwoceng (Pimpinella alpina KDS) on the Reproduction Performance of Adult Female Rats (Rattus norvegicus)
Abstrak: which had been used in male reproductive research because it has androgenic property. Studies of purwoceng on female reproductive performance is not clearly yet. This research was conducted to explore the effect of purwoceng on duration of each period and total time of estrus cycle. A total of 48 female rats strain of Sprague Dawley were divided into 4 groups based on their estrous period: proestrus, estrus, metestrus and diestrus. Each group consisted of 6 rats as a control and 6 rats as treated animals. Extract of purwoceng was given oraly every day for 10 days. After 10 days, half of them were sacrificed and the rest of group were continued for vaginal smears examination until day 15. The results showed that purwoceng given at various periods during 2 cycles of estrous extend the time period of proestrus and estrus, and significantly different in estrous period when given during the period of estrus (P<0.05) compare to other period. Time period of metestrus and diestrus were decreased except period of metestrus which increased during administration of purwoceng on metestrus. The weight of uterine and ovarian was higher on rats receiving purwoceng during estrus period than the control (P<0.05). The conclusion of this research was that the administration of purwoceng was more effective when it was given at times of estrus period.
Keyword: 

Judul: Formulasi Hamiltonian untuk Menggambarkan Gerak Gelombang Soliter Dimensi Tiga di Permukaan Laut
Abstrak: Gelombang permukaan adalah gelombang yang terjadi perbedaan rapat massa antara air dan udara. Salah satu gelombang permukaan yang ditinjau adalah gelombang soliter. Formulasi gelombang soliter dilakukan dengan menggunakan formulasi Hamiltonian.
Keyword: