Judul: Dinamika Populasi Larva Nyamuk Aedes spp. di Kelurahan Bantarjati Kota Bogor
Abstrak: Dengue hemorrhagic fever (DHF) is caused by dengue virus. The virus is transmitted to humans through the bites of Aedes aegypti and Ae. albopictus as the primary vector dengue. The aim of this research to observed population dynamics of Aedes spp. mosquito larval related to rainfall index correlated breteau index (BI). This research was conducted in April until July 2012 in DHF endemic area Bantarjati Subdistrict Bogor City. The larval collected in containers indoor and outdoor were 396 containers from 200 households. The result showed that the density of larval population in Bantarjati Subdistrict were belonged to the moderate category according to density figure (DF) in the rate of 2−5 (WHO 1972). Ae. aegypti larval were also found in indoor containers (8.81%) and Ae. albopictus in outdoor containers (34.33%). The BI average was the best indicator to describe the density of larval population. In this research, BI average was significantly correlated (p<0.05) to the rainfall index of Bogor during April−July 2012.
Keyword: Mosquito larvae, Dengue hemorrhagic fever (DHF), Aedes albopictus, Aedes aegypti

Judul: Kajian entomologi dan deteksi virus dengue pada Aedes spp. serta perilaku masyarakat di Keluarahan Bantarjati Bogor
Abstrak: Dengue Haemorrhagic Fever (DHF) is a desease which caused by dengue virus (DEN). DEN virus has four types, DEN-1, DEN-2, DEN-3 and DEN-4. They are associated with antigen. This arbovirus is transmitted by Ae.aegypti dan Ae. albopictus mosquitoes in many urban areas, especially in tropical and subtropical area. DHF still becomes healthy problem at Bantarjati village in Bogor city, because the sufferer of the desease can be found all year with the highest number of cases in Bogor city. The high of DHF cases at Bantarjati village is associated with the presence of DEN virus which is maintained in the vector Aedes spp. mosquito. Until now, serotype virus which contain in Aedes spp. mosquito at Bantarjati village Bogor city was not known, there were not data or research about identification serotype dengue virus of Aedes spp. mosquito. The aims of this research are to examine bioecology of Aedes spp. mosquito, to detect the presence of DEN virus in Aedes spp. mosquito and to study about behaviour of the community in DHF endemic area at Bantarjati village in Bogor city. This research was done on April 2012 until july 2012. This research used method survey on field for 4 months by conducting a survey in the home at 06.00 am to 06.00 pm. Survey activities on field by 1) collecting mosquito; 2) collecting larvae of mosquito; 3) trapping ovitrap; 4) detect of DEN virus and 4) studying behavior of the community. The result showed that the community used water container and non water container. Type water container more used than non water container, water container as many 298 units (75.25%) whereas non water container 98 units (24.75%). Artificial container was not found in research location. Many larvae found on non water container (60.01%) and on water container (12.20%). That index value of CI, HI and BI at Bantarjati village included in group population density of mosquito is average with value density in scala 2-5. Generally, the average value of ABJ in research location shows under national ABJ indicator (95 %). The matter shows that Bantarjati village still has high risc of DHF desease transmission. The community in this location has to increase eradication of mosquito breeding program to decrease risc of DHF desease transmission. The highest blood sucking activity of Ae. aegypti happened inside the house on 10.00-11.00 am (0,42 mosquito/person/hour ) and 04.00-05.00 pm (0,21 mosquito/person/hour), whereas the highest blood sucking activity of Ae. albopictus happened outside the house on 10.00-11.00 (0,42 mosquito/person/hour) and 02.00-03.00 pm (0,17 mosquito/person/hour). Behaviour rest of Ae. aegypti preferred inside the house and Ae. albopictus preferred outside the house. Dengue virus was not found in female Aedes spp. mosquito in Bantarjati village Bogor city. The behaviour of the community was categorized moderate.
Keyword: Aedes spp., Dengue Haemorrhagic Fever (DHF), Reverse Transcription-Polymerase Chain reaction (RT-PCR)

Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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