Judul: Pemurnian Minyak Ikan Sardin (Sardinella sp.): Sentrifugasi dan Adsorben Bentonit
Abstrak: Centrifugation and purification using adsorbents is one example of a fish oil refining techniques applied to reduce impurities of fish oil. The study aimed to determine the sardine oil quality before treatment, to determine yield of fish oil after centrifugation treatment, to determine the influence of centrifugation speed and bentonite concentration on sardine oil quality. Level of free fatty acids and peroxide value before purification was 35.53% and 170 meq/kg. Yield of fish oil after centrifugation treatment has been ranged from 17.42±3.56 to 76.33±0.21%. The best treatment which could reduce the peroxide value and total oxidation was a treatment with centrifugation speed at 6500 rpm and bentonite concentration at 3%. Peroxide value and total oxidation of its treatment was 25.00±0.00 meq/kg and 51.43±0.01 meq/kg. The lowest value of p-anisidine was 1.29±0.05 meq/kg and its value could be found in a treatment with centrifugation speed at 4500 rpm and bentonite concentration at 5%. The level of free fatty acids after purification process was ranged from 27.35 to 34.69%. Oil clarity tended to increase with the increase of speed centrifugation and adsorbent concentration.
Keyword: 

Judul: Improving sardines (Sardinella sp.) oil quality using centrifugation and synthetic adsorbent
Abstrak: Sardines (Sardinella sp.) was a by-product of flouring and canning industry where sardines are known contain more than 10% fat and most of the fat that was stored in the belly cavity (Moeljanto 2010). Purification is needed to get fish oil with food quality, so it is safe to be consumed. The purpose of this research were (1) characterize and determine the best fish oil taken from different locations; (2) determine the best purification treatment of centrifugation, adding synthetic adsorbent and combination; (3) determine optimization treatment of centrifugation and adding synthetic adsorbent using response surface method (RSM). Fish oil taken from different locations, Banyuwangi and Pekalongan. The best fish oil was taken from Pekalongan with composition of an unsaturated fatty acid 40.17% and saturated fatty acid 31.16%, with free fatty acids value 3.94 %, peroxide value 5 meq/kg, anisidin value 0.88 meq/kg and totox value 10.88 meq/kg. Purification by centrifugation best treatment was 10,500 rpm for 30 minutes. Purification by adsorbent synthetic best treatment was adding atapulgite 3% and bentonite 3%. Purification by combination centrifugation and adding synthetic adsorbent best treatment was centrifugation at 10,500 rpm for 30 minutes combined atapulgite 3% and bentonite 3%. The response surface method optimization best treatment was centrifugation at 9,494.89 rpm for 31.48 minute combined atapulgite 3% and bentonite 3% with free fatty acids value 4.07%, peroxide value 2.97 meq/kg, anisidin value 0.81 meq/kg and total oxidation value 6.32 meq/kg. An increase in percent of fish oil light transmission at different wave lengths by centrifugation and adding synthetic adsorbent. The best transmission values obtained at the combination synthetic adsorbent of bentonite and atapulgite on fish oil which is centrifuged first with 10,500 rpm for 30 minutes.
Keyword: adsorbent, centrifugation, fish oil, response surface method, Sardinella sp.

Judul: Jagorawi Toll Highway's Traffic Accident (1996-1997
Abstrak: Jalan tol Jagorawi adalah jalan tol yang pertama dibangun di Indonesia, menghubungkan antara Jakarta, Bogor dan Ciawi. Jalan tol telah dirancang sedemikian rupa untuk memberi keamanan bagi pemakai jalan, namun kenyataan yang ada memperlihatkan jumlah kecelakaan lalu lintas yang terjadi cukup besar. Penelitian ini bertujuan untuk melihat gambaran kecelakaan lalu lintas di jalan tol Jagorawi mengenai jalur dan ruas tempat kejadian, hari, waktu, serta cuaca saat kecelakaan terjadi. Hasil perhitungan memperlihatkan tingkat kecelakaan di jalur yang menuju arah Jakarta lebih tinggi daripada arah meninggalkan Jakarta. Pada setiap ruas di setiap jalur, tingkat kecelakaan yang mengakibatkan luka-luka jauh lebih tinggi daripada tingkat kecelakaan tanpa korban; namun belum bisa ditentukan ruas mana yang paling berbahaya karena belum ditemui adanya pola tertentu yang khas dari angka-angka hasil perhitungan tingkat kecelakaan per ruas yang ada. Frekuensi kecelakaan di hari Sabtu dan Minggu lebih tinggi dari hari-hari lain, untuk hari Sabtu frekuensi kecelakaan pada jalur yang meninggalkan Jakarta lebih tinggi sedangkan di hari Minggu lebih tinggi pada jalur menuju arah Jakarta. Kecelakaan lebih banyak terjadi pada siang hari, namun kecelakaan fatal lebih banyak terjadi di malam hari. Sebagian besar kecelakaan di jalan tol Jagorawi terjadi pada saat cuaca cerah, di alinemen jalan yang lurus dengan permukaan jalan yang kering.
Keyword: tingkat kecelakaan, statistika deskriptif, uji khi kuadrat