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.
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Judul: Efektivitas pemberian ekstrak etanol purwoceng (Pimpinella alpina) selama 13-21 hari kebuntingan terhadap bobot organ reproduksi dan anak tikus putih (Rattus sp.)
Abstrak: The study aims to observe the effect day of purwoceng (Pimpinella alpina) ethanole extract which given at 13-21 days age of pregnancy on ovarium, uterus, placenta, and pups weight. The rats were divided in to two groups. One of groups was rats that treated by purwoceng 25 mg/300 g body weight and the other groups control (no treatment). Purwoceng ethanole extract was given on the 13th until the 21st day of pregnancy. The rats was dissected on day 21 to take an ovarium, uterus, placenta, and pups, and to observe their weight. The result indicated that purwoceng ethanole extract tended to increase weight of ovarium, uterus, and pups but had no effect towards placenta.
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Judul: Formulasi Hamiltonian untuk Menggambarkan Gerak Gelombang  Internal pada Laut Dalam
Abstrak: Laut dapat dianggap terdiri dari lapisan-lapisan air yang memiliki rapat massa yang berbeda. Perbedaan rapat massa air laut dapat disebabkan oleh perbedaan kadar garam dan temperatur pada setiap lapisan air laut. Akibat perbedaaan rapat massa ini, maka muncul suatu gelombang. Gelombang internal adalah suatu gelombang yang terjadi di bawah permukaan, yang merupakan batas dua lapisan air laut karena adanya perbedaan rapat massa pada setiap lapisan air laut. Pada penelitian ini akan dibatasi pada fluida dua lapisan dengan kedalaman yang cukup besar. Diasumsikan bahwa kedua lapisan fluida ini masing-masing mempunyai rapat massa yang konstan dan berupa fluida ideal, yaitu fluida yang tak mampat (incompressiable) dan tak kental (inviscid). Gelombang interfacial terjadi pada batas kedua lapisan fluida (interface)
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