Judul: Salinity influence to mercury toxicity and the effect to milkfish (Chanos chanos Forsskal) physiologic conditions
Abstrak: Mercury is a very dangerous heavy metal that can damage nerve and enzyme system in fish body. This research aimed to knows mercury toxicity to milkfish with different salinity. It consisted of two steps; they were preliminary research (range value test and acute toxicity test) and main research (the salinity influence of mercury toxicity and milkfish’s physiologic condition). Range value test was done in fresh water consisting of five treatments (0, 0.006, 0.06, 0.6 and 6 mg Hg/l). Acute toxicity test also consisted of five treatments (0, 0.110, 0.195, 0.347 and 0.618 mg Hg/l). Moreover, main research consisted of one control and three treatments with three replications at the same concentrate of mercury 0.012 mg Hg/l. Those treatments were salinity 0 ppt, 10 ppt and 20 ppt. The result demonstrated that LC50 96 hour in fresh water was 0.147 mg Hg/l. The main research showed that mercury can increased osmotic gradient, decreased oxygen consumption rate, increased blood glucose rate, decreased hematologic conditions, growth rate, feeding efficiency, and survival rate. Mercury is collected in body gland, for example in gill and liver. Treatment C (10 ppt) showed better physiologic conditions than other treatments. The effect of mercury toxicity would get minimal while maintained at optimal salinity.
Keyword: 

Judul: Acute toxicity, bioconcentration and bioelimination malathion in juvenile milkfish (Chanos chanos forsskal)
Abstrak: Malathion is non systemic organophosphate insecticide that has large spectrum and special character by inhibiting cholinesterase work to asetilcholine in fish body. Generally, the use of malathion is to exterminate insects in health, agriculture, husbandry, and household. This research aims to determine limit level and acute malathion toxicity and to analyze malathion bioconcentrate influence and bioelimination in juvenile milkfish body. Moreover, main research consisted of one control and three treatments with three replications (A. control, B. 025, C. 0.5, D. 0.75 μg/l). The results showed that malathion insektida threshold in the range of 0002-0004 mg / l and acute toxicity LC50 96 hour is 0.0025 mg /, malathion concentration 0,75 (treatment D) was very toxic and influenced physiological condition of juvenile milkfish, therefore increasing accumulation in fish body gland, decreasing hematological condition, feed consumption, specific growth rate, feeding efficiency, and survival rate. Malathion elimination rate of 0.03 mg / l was very fast suitable with time addition and not persistent in juvenile milkfish body.
Keyword: 

Judul: Perancangan lanskap pedestrian path kawasan kereta api Bogor dan jalan sekitarnya
Abstrak: Kawasan stasiun kereta api Kota Bogor, Jalan Kapten Dewi Sartika, Jalan Mayor Oking dan Jalan Mesjid Agung, Bogor merupakan salah satu kawasan dengan tingkat pengguna jalan yang cukup tinggi dan berbagai aktifitas, yang salah satunya adalah penggunaan jasa transportasi kereta api untuk mencapai tujuan tertentu. Untuk mencapai kawasan stasiun kota Bogor ini sebagian besar masyarakat menggunakan ruas-ruas jalan yang berada di sekitar kawasan stasiun. Jalan Kapten Muslihat merupakan ruas jalan utama yang digunakan oleh pengguna jalan baik yang menggunakan kendaraan umum maupun menggunakan jalur pejalan kaki. Begitu juga dengan jalan Nyi Raja Permas dan Mayor Oking yang merupakan akses utama untuk mencapai pintu masuk stasiun sebelah timur dan sebelah barat. Selain itu Jalan Mesjid Agung dan Dewi Sartika juga merupakan sirkulasi yang digunakan oleh pengguna jalan untuk mencapai stasiun.
Keyword: