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: 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: : Persamaan Tunggal sebagai Representasi Kurva Komposit
Abstrak: A mathematical method is introduced to represent a composite curve based on an extension of analytic geometry. The representation is given either with a single equation or with two equations, in the case of parametric representation. This method permits the representation of composite curves in similar manner to the conventional representation of non-composite curves. Some mathematical tools, including Heaviside unit step function and periodizer function, are used in the establishment of a single equation. In this paper, regular equations of regular and irregular polygon, as well as composite curves of two dimensions, are implemented using a computer algebraic system, Mathematica.
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