Judul: Pregnancy Check And Fetal Development On Indonesian Domestic Rabbits By Means Of Ultrasonography
Abstrak: This research is carried out to detect the earliest day of conception in Indonesian domestic rabbits by analyzing embryonic vesicle, body diameter and head diameter. The animals used for this research were six pregnant rabbits weighed between 1.75 – 3.90 kg. SonoDop ultrasound system with curved and linear transducers, ultrasound scanner (S-A5V) and Landwind Medical Mirror5 were used. The does were examined on day 5 after mating and every 2 to 3 days until they gave birth. On day 5, the embryonic vesicle size is 10.25 ± 0.96 mm and on day 10, the size is 22.50 ± 0.71 mm. The equation for it is x = y + 0.2/0.245. The average body diameter on day 18, 21, 24, and 29 were 0.96 ± 0.049 cm, 1.17 ± 0.025 cm, 1.49 ± 0.049 cm and 1.56 ± 0.026 cm respectively. The equation is x = y - 0.0021/0.0562. The average head diameter on day 18, 21, 24, and 29 were 0.79 ± 0.11 cm, 1.02 ± 0.08 cm, 1.22 ± 0.08 cm and 1.59 ± 0.02 cm respectively. The equation is x = y + 0.5073/0.0723. All x above is number of days. The earliest day of conception was determined on day 5 in Indonesian domestic rabbits.
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, Domestic rabbits, Rabbits, Ultrasonography, Pregnancy

Judul: Ovarian Dynamic and Early Pregnancy Detection in Kacang Goat (Capra hircus).
Abstrak: The growth of follicles in the ovaries of goats was important to learn to maximize the development of reproductive techniques. The researchs were conducted to study the ovarian dynamics and the earliest pregnancy detection in the kacang goat. Six non pregnant kacang goats were used in this research. They were clinically healthy, 2-3 years old and showed normal estrous cycles. The estrous cycles of the kacang goats were synchronized by using prostaglandin 0.5 mg/kg body weight during luteal phase. The ovarian dynamics were observed daily by using transrectal ultrasonography. The pregnancy detections were carried out ten days after natural breeding by using transrectal ultrasonography. The pregnancy detections measurement with blood plasma progesteron profile were evaluated by radioimmunoassay. Ovulation of the dominant follicles (5.7±0.8 mm) were occurred 50±14 hours after injection of prostaglandin. Follicular development consists of three or four follicular waves during 20±1.1 days of an estrous cycle. The dominant follicles reached the maximum diameter in 3.1±0.6 days from wave emergence and the preovulatory dominant follicle diameter was 6.5±0.5 mm at first estrous cycle. The second estrous cyle, dominant follicles reached the maximum diameter in 3.1±1.6 days from wave emergence and the preovulatory dominant follicle diameter was 7.1±0.5 mm. The corpus luteum of kacang goat at first estrous cycle was observed 2.0±0.5 days after ovulation up to 2.8±0.8 days before the next ovulation. The corpus luteum of kacang goat at second estrous cyle was observed 3.0±0.4 days after ovulation up to 3.3±1.0 days before the next ovulation. The early pregnancy was detected on days 20 after mating with diameter of embryonic vesicle was 0.5±0.0 cm. The fetuses were detected on day 22 with diameter crown-ramp was 0.4±0.1 cm and levels of the progesterone 2.6±0.0 ng/mL. The development of the fetus was 0.16±0.0 cm per day until days 30 of pregnancy. The diameter of uterus increased from days 14 (0.8±0.3 cm) until days 30 (3.6±0.2 cm), and thickness of uterus increased from days 14 (0.4±0.2 cm) until days 30 (1.8±0.2 cm).
Keyword: kacang goat, ovaries, pregnancy, transrectal ultrasonography

Judul: Sintesis Dan Karakterisasi Komposit Tio2/Nanopartikel Karbon (C-Dot) Dan Aplikasinya Sebagai Fotokatalis Untuk Degradasi Perkloroetilena.
Abstrak: Komposit TiO2/C-dot disintesis dengan metoda sol-gel dan telah diselidiki sebagai katalis untuk degradasi fotokatalitik senyawa pencemar perkloroetilena (PCE). Sifat fotoluminesens ditunjukkan dari analisis visual menggunakan lampu UV (365 nm), dan produk hasil sintesis dikarakterisasi menggunakan difraksi sinar-X (XRD), Fourier Transform Infrared (FTIR), spektrofotometer fluoresens, Scanning Electron Mocroscope (SEM) dan spektrofotometer UV-Vis. Hasil analisis XRD dan FTIR menunjukkan bahwa C-dot terikat secara fisik dalam TiO2. C-dot tidak kehilangan sifat fluoresensnya walaupun dikomposit dengan TiO2. C-dot dapat menurunkan nilai energi celah pita optik TiO2 dalam komposit TiO2/C-dot sehingga memperlebar jangkauan serapan TiO2 dan meningkatkan aktivitas fotolatalitik TiO2. Degradasi PCE 0.1% (v/v) dalam fasa cair telah diselidiki di bawah sinar matahari selama 2 jam. Efektivitas fotodegradasi ditentukan menggunakan kromatografi gas. Komposit TiO2/C-dot 2.5% (b/b) berhasil mendegradasi PCE di bawah sinar matahari dan efektivitas fotodegradasi mencapai 89.45%.
Keyword: Komposit TiO2/C-dot, fotokatalitik, degradasi, perkloroetilena.