Judul: Perilaku seksual pada anjing
Abstrak: Anjing (Canis familiaris) salah satu hewan liar yang telah mengalami proses domestikasi. Banyak kegunaan hewan ini dalam kehidupan manusia sehari-hari, sehingga banyak di pelihara dan dikembangbiakkan. Perkembangan perilaku anjing terjadi secara bertahap, yaitu periode neonatal, periode transisi, periode sosialisasi dan periode remaja sampai dewasa. Periode sosialisasi merupakan periode yang paling penting dari perkembangan perilaku. Menghadapi banyaknya perbedaan perilaku hewan di las pangan, maka untuk memahami tentang rangkaian perilaku hewan di lapangan diperlukan adanya penelitian yang sifatnya individual di laboratorium. Salah satu adalah perilaku seksual. Perilaku seksual anjing sangat unik diantara hewan domestik lainnya. Umumnya terjadi secara bermusim yaitu dua kali dalam setahun, digolongkan kedalam hewan monoestrus. Perilaku seksual pada hewan jantan dan betina dewasa tergantung pada beberapa faktor fisiologis dan faktor lingku- ngan (psikologis). Anjing betina berahi akan mengeluarkan pheromon, yang mompelen let komunikasi untuk aktivitas seksual pada musim kawin. Hormon estrogen dan progesteron berperanan pen- ting dalam perilaku seksual anjing betina, sedangkan pada anjing jantan adalah androgen atau testoteron. Anjing betina berahi akan menerima anjing pejantan untuk kopulasi dengan bercumbu, meloncat, menggigit telinga atau menaiki pejantan tersebut. Dengan memperhatikan perilaku seksual pada seekor anjing betina, merupakan salah satu cara untuk mendeteksi fase estrus.
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Judul: Pola Reproduksi Anjing
Abstrak: Anjing (Canis familiaris) merupakan hewan liar yang te1ah menga1ami proses domestikasi. Banyaknya kegunaan hewan ini dalam kehidupan manusia sehari-hari, menyebabkan banyak yang memelihara dan mengembangbiakkannya. Siklus reproduksi anjing sangat unik diantara hewan-hewan domestik lainnya. Umumnya hanya mengalami dua kali musim kawin da1am setahun (mono estrus) dan periode berahi yang panjang. Proestrus terjadi kira-kira 9 hari, dan estrus atau berahi yang sebenarnya berlangsung antara 7-9 hari. Ovulasi biasanya terjadi pad a hari ke tiga periode estrus. Jika konsepsi tidak terjadi, periode metestrus akan di1anjutkan dengan terbentuknya kebuntingan palsu (pseodopregnancy) yang 1amanya hampir sarna dengan kebuntingan sebenarnya.
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Judul: Enhancement of photon absorbtion on BaxSr1-xTiO3 thin films semiconductor using photonic crystals.
Abstrak: In this research, has been conducted BaxSr1-xTiO3 (BST) thin films manufacturing for mole fraction x = 0.25, 0.35, 0.45, and 0.55; and concentration of 1 molar using chemical solution depositon (CSD) method. The materials, which are used in this research, are barium acetate [Ba(CH3COO)2, 99%], strontium acetate [Sr(CH3COO)2, 99%], titanium isopropoxide [Ti(C12O4H28), 97.999%], gallium trioxide [Ga2O3], 2-methoxyethanol [H3COOCH2CH2OH, 99%] and 1 x 1 cm of transparent conductive oxide (TCO) glass as substrate. Two BST thin films are made that for BST thin films which are doped by 10% galium (BGST) as p-type layer and pure BST solution as n-type. BST solution is made by reacting barium acetate [Ba(CH3COO)2, 99%], strontium acetate [Sr(CH3COO)2, 99%] and titanium isopropoxide [Ti(C12O4H28)] into 2-methoxyethanol solvent [H3COOCH2CH2OH, 99%] in accordance with mass gram for each x value. While, BGST solution is made in the same way as BST solution, plus adding gallium at 10% of the mass of BST. Once all materials are reacted, then vibrated using ultrasonic for 90 minutes, and followed by coating BGST / BST on the TCO substrate. Once the layer is formed, then annealed for 15 hours at temperature of 500 °C with increasing rate of 1.67 oC/minute. Characterizations of BST thin films with or without photonic crystals include the absorbance and transmittance in the visible light spectrum, as well as the electrical photoconductivity characterizations. From BST thin films without photonic crystals indicate that our thin films have light absorption area on almost the entire range of the visible light spectrum even to the infrared range with absorption value over than 67.6%, in addition, it can be seen that the maximum absorbance of BST thin films for all mole fractions lie in blue to green light spectrum region, 457 nm ≤ λ ≤ 570 nm and the minimum in yellow to red light spectrum region, 570 nm ≤ λ ≤ 678 nm. The largest absorbance is found at x = 0.25 with average absorbance value of 92.04% and maximum and minimum absorbance peaks at wavelength of 500.89 and 657.72 nm, respectively. At x = 0.35, average absorbance value decreased to 83.55% with maximum and minimum peaks at 505.73 and 613.68 nm, respectively. Then increased to 91.16% at x = 0.45 with maximum and minimum peaks at 506.04 and 618.56 nm, respectively. At x = 0.55, average absorbance value decreased to 80.12% with maximum and minimum peaks at 507.85 and 608.79 nm, respectively. Moreover, it can be seen that the addition of barium mole fraction leads to wider maximum absorbance or minimum transmittance peaks and narrower minimum absorbance or maximum transmittance peaks in the same range of the green and blue & red light spectrums, respectively. BST thin films with photonic crystals show increasing in absorption for all x values in the range of 3.04 into 13.33%. At x = 0.25, average absorbance percentage increased 3.96% from 92.4 into 95.68%, for x = 0.35 average percentage increased 7.07% into 89.45 from 83.55%. Furthermore, average absorbance of BST thin films at x = 0.45 increased 3.04% from 91.16 into 93.93% and x = 0.55 has
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