Judul: Nanokomposit kaolin-TiO2 dengan dopan urea untuk adsorpsi dan fotodegradasi zat warna biru metilena
Abstrak: Methylene blue is one type of dyes found as pollutant in Indonesia water system. Kaolin-TiO2 nanocomposite was synthesized and used to overcome this problem by utilizing its adsorption-photodegradation mechanism. Kaolin-TiO2 nanocomposite was made by mixing kaolin powder and TiO2 powder physically using ball milling and paste methods. The ball milling method is found to be simpler than paste method, and also resulting in smaller particle size. Smaller particle size also found to increase both adsorption and photodegradation activities. It is believed that ball milling method also generated a homogenous mixture. From 2 different sample compositions and 3 milling times used, it was found that synthesis kaolin-TiO2 nanocomposite requiring calciumbased binder with an optimum milling time of 5 hours. Kaolin-TiO2 nanocomposite was doped with urea by manual physical mixing followed by calsination at 300 °C for 2 hours. Urea doped-nanocomposite has larger activity than undoped nanocomposite in visible light zone. It means that the photocatalytic activity of urea doped-nanocomposite was successfully shifted to the red zone area of the visible light. Therefore, incident sunlight can be used as energy source in the adsorption-photodegradation process using nanocomposite Kaolin-TiO2.
Keyword: adsorption, ball milling, kaolin, methylene blue, photodegradation

Judul: Sintesis Nanokomposit Kaolin/TiO2 Teremban Fe2O3 untuk Adsorpsi-Fotodegradasi Biru Metilena
Abstrak: Kaolin is a type of clay mineral that has adsorption capacity. The experiment shows that the adsorption capacity of kaolin was 20.6 mg/g. This value is lower than zeolite adsorption capacity that in general has value above 100 mg/g. Mixing kaolin with other materials to form nanocomposite, may improve its adsorption properties. Nanocomposites that had been synthesized were kaolin/TiO2 nanocomposites with the addition of Fe2O3 using 2 synthetic methods, namely using ball milling and paste methods. The nanocomposite synthesized using ball milling method had higher adsorption capacity value, i.e. 23.6 mg/g. The nanocomposite of kaolin/ TiO2 was able to adsorb and degrade waste dyes in ultraviolet range. Furthermore, addition of Fe2O3 to the kaolin/TiO2 nanocomposite improved the performance of the nanocomposite by reacting under the visible rays. Therefore, the performance of nanocomposite of kaolin/TiO2 added with Fe2O3 was is more effective since visible ray is the major part of the sun light.
Keyword: nanocomposite of kaolin/TiO2/Fe2O3., kaolin, photodegradation, adsorption

Judul: Penelitian pendahuluan tentang vaskularis dan intervasi kepala dan leher kambing
Abstrak: Penulisan skripsi ini bertujuan untuk mengetahui tata cara persiapan preparat praktikum, menambah bahan pustaka dan membuat gambaran makro anatomi kepala dan leher kambing (Capra sp.) dengan vaskularisasi dan inervasinya. Kambing berasal dari genus capra, yang berbeda dengan domba dan sapi tetapi secara umum struktur anatominya mudah dibedakan. Terkadang antara kambing dan domba dari varietas tertentu sulit dibedakan. Sampai dewasa ini kebanyakan buku-buku teks anatomi hewan piara yang tersedia, masih menitik beratkan anatomi. kuda sebagai bahan pokok dan anatomi golongan ruminansia, dalam garis besarnya hanya melukiskan anatomi sapi dan dom ba. Jarang atau hampir tidak mempersoalkan anatomi kambing. Adapun buku teks yang sekarang dipakai sebagai pegangan untuk mempelajari anatomi kambing adalah "Anatomy of the Sheep "karangan May (1970), karena dombalah yang di anggap paling menyerupai kambing. Arteri-arteri yang ditemukan untuk vaskularisasi daerah leher dan kepala adalah: Truncus brachiocephalicus, Truncus bicaroticus, A. carotis communis sinistra dan dex tra, A. occipitalis, A. carotis externa, A. lingualis, A. maxillaris, A. temporalis superficialis, A. auricularis caudalis, A. transversa faciei, A. labialis maxillaris dan A. labialis mandibularis.
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