Judul: Perilaku dan Karakteristik Habitat Potensial Nyamuk Anopheles spp. di Desa Riau Kecamatan Riau Silip Kabupaten Bangka Provinsi Bangka Belitung
Abstrak: Malaria is one of public health problem in Indonesia. The research was carried out to explore the diversity, density and the behavior of Anopheles as malaria vector, including mapping and measuring characteristics of larval potential habitat in Riau Village, Riau Silip Subdistrict, Bangka District. The studies were done from February to May 2011. The Anopheles mosquitoes were collected indoor and outdoor by human landing collection in the evening starting from 6 pm to 6 am. The characteristics of potential habitat and coordinates were measured based on larval collection sites. The result showed that there were four Anopheles spesies i.e. An. letifer, An. barbirostris, An. nigerrimus, and An. indefinitus. The man hour density of mosquitoes indoor and outdoor for An. letifer were 0,12 and 0,13, An. barbirostris 0,06 and 0,04, An. indefinitus 0,02 only at outdoor, and An. nigerrimus was not found biting. The biting activity was peak indoor and outdoor at 7-8 pm and 10-11 pm for An. letifer, and An. barbirostris at 9-10 pm and 11-12 pm. There were seven types of potential habitats i.e. ditches, pool, swamps, former mining pond, wells, and ground hole, however only one larva of An. letifer was found in a pool. The habitat characteristics of An. letifer larva were found at water temperature 24ºC, pH 6.0 to 6.1, salinity 0‰, turbidity 6 NTU, mud bottom habitat, no water plants, and there was tadpoles as predator.
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Judul: Karakteristik Habitat Potensial Larva Nyamuk Anopheles dan Hubungannya dengan Kejadian Malaria di Kota Pangkalpinang, Bangka Belitung
Abstrak: This study aimed to measure the characteristics of potential habitats that become breeding places for Anopheles mosquitoes in the former tin mining (pit) in Pangkalpinang city. The research was conducted in July 2011 to May 2012 and performed in two activities, collection with determination of the larvae habitats characteristics and identification of Anopheles larvae. Anopheles larvae were collected, processed to slide specimen, then identified by using the identification key of the Anopheles larvae (O’Cornor and Soepanto 1989). The result showed that larvae species found were An. letifer. Generally the characteristics of the larval breeding potential habitats in Pangkalpinang city had area between 100- 6000 m2, the temperature was 28-31 °C, and the salinity was 0‰. The age habitats were varied from 1 to 29 years old. The base of habitats were sand, mud, and sand ground. The habitats also had variety of turbidity level from clear, yellow, to brown with a depth of 0.05 to 10 m. In addition, there were aquatic plants such as grasses, algae, ferns, water hyacinth, and taro. Fish, tadpoles, and dragonflies larvae were found in habitats as Anopheles larvae predators.
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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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