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: Perilaku Vektor Demam Berdarah Dengue (Aedes spp.) di Daerah Endemis Kelurahan Bantarjati Kota Bogor
Abstrak: Bantarjati subdistrict is an area that has the highest dengue cases in the city of Bogor during 2007 to 2011. The purpose of this research was to observe the behavior of biting and resting Aedes spp. Mosquito collection was done by human landing collection and resting collection from 08.00 to 17.00 in Bantarjati subdistrict during April−July 2012. The results showed that Aedes aegypti was more active indoor the house (0.24 mosquito/person/hour) than outdoor (0.16 mosquito/person/hour) with the biting activity occurred at 10.00−11.00 (0.42 mosquito/person/hour) and at 16.00−17.00 (0.21 mosquito/person/hour). While Ae. albopictus was more active outdoor the house (0.18 mosquito/person/hour) than indoor (0.05 mosquito/person/hour) with the biting activity occurred at 10.00−11.00 (0.42 mosquito/person/hour) and at 14.00−15.00 (0.17 mosquito/person/hour). Ae. aegypti was found resting more indoor the house (0.03 mosquito/house) than outdoor (0.02 mosquito/house), while Ae. albopictus was found resting more outdoor the house (0.01 mosquito/house) than indoor (0.00 mosquito/home). The result of Pearson’s correlation analysis showed that the relationship between the rainfall index with the density of Ae. aegypti (r=0.94, P>0.05), and Ae. albopictus (r=0:49, P>0.05).
Keyword: resting behavior., biting activity, albopictus, Ae. aegypti, Ae

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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