Judul: Pemanfaatan Minyak Goreng Bekas sebagai Bahan Baku Ester Metilat
Abstrak: Minyak goreng bekas merupakan minyak sisa hasil menggoreng dan biasanya dihasilkan oleh industri-industri pangan, restoran-restoran dan penjual makanan jajanan tradisional. Selama proses pemanasan komposisi minyak goreng telah mengalami perubahan yang mengarah pada kerusakan minyak. Apabila minyak goreng tersebut masih digunakan ulang akan membahayakan kesehatan tubuh. Minyak goreng bekas secara ekonomis telah mengalami penurunan nilai. Salah satu altematif untuk memanfaatkan minyak goreng bekas tersebut adalah sebagai bahan baku pembuatan 0leokimia dasar ester metilat. Metil ester adalah 0leokimia dasar turunan minyak atau lemak. MetiI ester dibuat dari minyak atau lemak sebagai aItematif pengganti asam lemak untuk memproduksi alkohol as am lemak dan kompon nitrogen asam lemak. Metil ester biasanya dimanfaatkan dalam proses pengolahan karet, industri lilin, produk kosmetika, sabun dan detergen, a sulfonated metil ester, poliester sukrosa, dan biodiesel.
Keyword: 

Judul: Transesterlflkasl Minyak Goreng Bekas untuk Produksi  Metll Ester
Abstrak: The increasingly public awareness about food safety on used frying oil and the increasingly serious environmental destruction have made biodiesel from used frying oil to become an alternative fuel for replacing diesel fuel position in most conventional diesel engines. Transesterification of used frying oil with methanol, in the presence of 1% sodium , hydroxide catalyst (base on weight of oil) was applied in this work.
Keyword: 

Judul: Pengukuran Jantung Kelinci New Zealand White (Oryctolagus cuniculus) dengan Radiografi Toraks
Abstrak: This research was conducted to evaluate radiographs heart size of anaesthetized New Zealand White rabbits (Oryctolagus cuniculus) under different combination of ketamine and xylazine. The rabbits were divided into three groups. Group A were anaesthetized using a 35 mg/kg and 5 mg/kg combination of ketamine and xylazine (n=5). Group B were anaesthetized using a 40 mg/kg and 5 mg/kg combination of ketamine and xylazine (n=3) while group C were anaesthetized using 45 mg/kg and 5 mg/kg combination of ketamine and xylazine (n=3). Parameter of observation from left laterolateral view were: 1) the apicobasilar length of the heart (AB), 2) the width of the heart (CD), 3) the distance between the cranial edge of the fifth rib and the caudal edge of the seventh rib perpendicular to the spine (R5-7), and 4) the vertical depth of the toraks (H). Parameter of observation from dorsoventral view were: 1) the length of the heart (L), 2) the width of the heart (W), and 3) the width of the thorax (T). The result from the heart parameters observation that were measured in left laterolateral view and dorsoventral view shows theres no significantly differ among the groups (P > 0.05). The vertebrae heart size (VHS) values obtained from the sum of the length of the long and the short axes on left laterolateral view. The long axes mean values (A) were 4.35±0.26 v and the short axes mean values (B) were 3.59±0.30 v, therefore VHS mean values were 7.94±0.49 v. On the dorsoventral view, the length of the heart mean values (L) were 4.32±0.29 cm, the width of the heart mean values (W) were 3.33±0.26 cm, and the width of the thorax mean values (T) were 5.85±0.30 cm. In normal conditions, the width of the heart should be less than two-thirds the width of the thorax and values obtained of 3.33<3.72 it shows that the heart is in the normal range. The best ratio to calculated the normal heart dimension in the left laterolateral view was compared the long axes with the vertical depth of the thorax, whereas in dorsoventral view, the length of the heart was compared with the width of the heart.
Keyword: