Judul: Idetifikasi Cemaran Bakteri Staphylococcus aureus Pada Daging Ayam yang di Jual di Pasar Tradisional dan Modern di Sekitar Kampus Institut Pertanian Bogor
Abstrak: Chicken meat is one of foodstuffs which derived from animal that can be used by bacteria as a medium to grow and multiply. One of bacteria which uses this medium is Staphylococcus aureus. Staphylococcus aureus is one of the microbial pathogens that can cause food intoxication. The purpose of this research is to determine the contamination of S. aureus in chicken meat which is sold in traditional and modern markets. The meat samples were taken ten times from a traditional and modern market once a week regularly. This research used Gram Coloring test, Catalase test, glucose and mannitol fermentation in aerobic test, coagulase test, and Mannitol Salt Agar (MSA). The results of this study showed that the bacteria in the samples was identified as S. aureus.
Keyword: Traditional market., Staphylococcus aureus, Modern market, Chicken

Judul: Identifikasi cemaran escherichia coli pada daging ayam yang dijual di pasar tradisional dan pasar modern daerah Bogor Barat
Abstrak: The aim of this research was acknowledge about contaminated chicken meat from Eschericia coli which sold in traditional market and modern market. About two traditional markets and two modern markets where the samples were takenly for thirteen times, frequently once for a week. The research used Gram colouring test and biochemical test (IMViC test). Result of Gram colouring test shown that all the samples from both of traditional markets and both of modern markets was Gram negative bacterian, from IMViC test, all samples from both of traditional markets and both of modern markets were negative from Indol test and Red Metil test and positive from Voges Proskauer test and Sitrat test. Otherwise, from the result of Gram colouring test and IMViC test, bacteria which was found in thirteen samples from both of traditional and modern markets was not Eschericia coli.
Keyword: Escherichia coli, chicken meat, traditional markets, modern markets.

Judul: Pembuatan Film Tipis Lithium Niobat (LiNbO3) Menggunakan Metode Chemical Solution Deposition (CSD) dengan Variasi Kecepatan Putar (Rpm).
Abstrak: Film tipis merupakan salah satu aspek yang mendapat perhatian sangat besar dalam bidang material, karena film tipis merupakan material menarik yang memiliki sifat optik yang sangat tergantung pada konstanta dielektrik, indeks bias, dan energi gap. Lithium Niobat (LiNbO3 ) dapat digunakan sebagai pelapis pada film tipis karena memiliki sifat piezoelektrik, electrooptical, pyroelectrical dan photorefractive yang sangat baik. Film tipis Lithium Niobat (LiNbO3 ) ditumbuhkan menggunakan metode Chemical Solution Deposition (CSD) dengan variasi kecepatan 3500 rpm, 5000 rpm, 6500 rpm, dan 8000 rpm. Metode ini memiliki keunggulan dapat mengontrol stokiometri film tipis dengan kualitas yang baik, prosedur yang mudah dan membutukan biaya yang relatif murah. Energi band gap yang dihasilkan dari film tipis Lithium Niobat (LiNbO3) berkisar antara rentang 2.1 eV – 2.8 eV dengan indeks bias berada pada rentang 2.18-3.2. Film tipis LiNbO3 memiliki parameter kisi a=b=5.54Ǻ dan c = 16.35 Ǻ. Struktur morfologi film tipis adalah permukaan yang homogen dan ukuran kristal berada pada rentang 0.417 μm – 0.680 μm.
Keyword: film tipis, sifat optik, litium niobat, chemical solution deposition, kecepatan putar