Judul: Performa Obesitas  Monyet Ekor Panjang (Macaca fascicularis) yang Diberi Pakan Berenergi  Tinggi
Abstrak: The aim of this research was to found obesity performances of long-tailed macaques (Macaca fascicularis) which fed with high energy diet. Two groups of five adult males (average body weight 4-6 kg) were treated by three types of high energy diets (A treatment, B treatment and C treatment). Body measurements which observed were crown-rump length; the circumferences of calf (of leg), thigh, hip, waist, chest, arm, and head; thicks of meta-tarsale and meta-carpale; skin fold thickness of arm, back, and stomach; body weight and body mass index (BMI). Data were analyzed by ANOVA, with nested design. The result showed that obesity performances of long-tailed macaques which fed with high energy diet were significantly (P<0.01) for circumferences of hip, waist and chest; skin fold thickness of back and stomach; body weight and body mass index. Body mass index of long-tailed macaques on treatment high energy diet with raw material tallow and yolks indicated became pre- obese with base on Asia people BMI standard with BMI’s average 24.85.
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Judul: Profil Darah Monyet Ekor Panjang (Macaca Fascicularis) Yang Diberi Pakan Berenergi Tinggi Pada Periode Obesitas Empat Bulan Pertama
Abstrak: The aim of this research was to determine blood profiles of Long-tailed Macaca (Macaca fascicularis) which were fed with high fat and soluble carbohydrate as the obese diet. The ingredients of obese diet came from local source such as sugar, wheat flour, tallow, vegetable oil, fish meal, maize flour, soybean meal, rice bran, yolk, mineral (calsium carbonat and calsium phosphate) and fiber source from agaragar. Environmental enrichment was alternately given fruit apple, orange, papaya, and guava (weight 10 g/head/day) in a frozen state. Bananas were given about 70 g/day as additional feed. Ten adult males (av. BW 3-5 kg, 5-6,5 year) and five adult males (BW 3-5 kg, 5-6,5 year) subsequently treated with obese diet and control diet. Observed variable are red blood cells count, hemoglobin, hematocrit, Mean Corpuscular Hemoglobin (MCH), Mean Corpuscular Volume (MCV) Mean Corpuscular Hemoglobin Concentration (MCHC) for red bood cell indices and neutrofil, eosinofil, basofil, limfosit and monosit for white blood cell differentiation. The blood was collected from femoral vein under anaesthetized condition. Blood samples were analyzed by automated machine (hematology analyzer). High energy diet had highly significant influence (P<0,01) red blood cell count, hemoglobin, hematocrit, and MCV and less significant for MCHC and white blood cells differentiation (P>0,05). Period nested within feed treatment did not significantly (P>0,05) except on MCHC (highly significant, P<0,01). Duncan test results showed that diet B was the most significant influence and feed A had the same influence with feed to red blood cells count (P<0,05). The influence of feed B significantly higher than the feed A, and feed A feed was higher than feed for hemoglobin and hematocrit (P<0,05). The influence of feed C was significantly higher than feed B, and diet B was higher than feed A (P<0,05) for MCV and MCH. Fourth period was higher influence, 3rd and 2nd period were higher than initial period and 1st period for MCHC. Keywords: Macaca fascicularis, laboratory animal, high energy diet and blood profiles
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Judul: Sintesis nanopartikel Cu2ZnSnS4 menggunakan teknik hidrotermal
Abstrak: Nanopartikel Cu2ZnSnS4 (CZTS) merupakan semikonduktor yang berpotensi sebagai fotokatalis untuk reaksi fotodegradasi zat pewarna. Semikonduktor ini memiliki sela pita yang jauh lebih kecil dibandingkan dengan semikonduktor TiO2, sehingga memungkinkan dapat berkerja hanya dengan paparan sinar matahari. Nanopartikel Cu2ZnSnS4 telah berhasil disintesis menggunakan teknik hidrotermal dengan suhu 200 oC selama 24 jam. Larutan Cu2ZnSnS4 dinetralkan menggunakan amonium hidroksida dan dialiri gas N2 sebelum proses hidrotermal. Hasil analisis mikroskop elektron pemayaran menunjukkan nanopartikel Cu2ZnSnS4 mengalami aglomerasi karena memiliki ukuran partikel yang besar. Hasil analisis difraktogram sinar-X menunjukkan bahwa Cu2ZnSnS4 yang dihasilkan memiliki struktur kesterit dengan senyawa fase sekunder yang terbentuk adalah CuS, ZnS, dan Cu2SnS3. Hasil uji fotodegradasi menunjukkan bahwa senyawa hasil sintesis memiliki kemampuan degradasi dibawah sinar matahari lebih baik dibandingkan dengan TiO2. Namun, pada paparan sinar UV, TiO2 mendegradasi biru metilena lebih baik daripada senyawa hasil sintesis. Kapasitas adsorbsi terhadap biru metilena sebesar 2.6780 mg/g menunjukkan bahwa senyawa hasil sintesis tidak mampu mengadsorpsi dengan baik, sehingga disimpulkan bahwa hilangnya biru metilena dari larutan disebabkan oleh fotodegradasi, bukan oleh adsorpsi
Keyword: band gap, Cu2ZnSnS4, kesterite, photocatalyst, semiconductor