Judul: Efektivitas ekstrak daun tapak dara (Catharanthus roseus) sebagai larvasida nyamuk culex quinquefasciatus
Abstrak: Mosquitoes are blood-sucking insects related to human disease because its role as a biological vectors. The control of mosquitoe’s that using a synthetic substance leads to resistance and toxic to human and animals. This research was conducted to measured the activity and effectivity of tapak dara (Catharanthus roseus) leaves extract to the mosquitoe’s larvae of Culex quinquefasciatus mortality. The research was conducted in February - August 2013. This research were carried out in two steps, i.e. the extraction of tapak dara leaves and the phytochemical test; and the effication test of the extract against the larvae of Culex quinquefasciatus. The result showed that the mortality of Cx. quinquefasciatus larvae with concentration 2000 ppm after 24 hours exposured was 47%. The increasing of leaves extract concentration and the duration of the exposured were followed by the increasing of the larvae mortality rate. The LC50 value of Cx. quinquefaciatus was 3469 ppm. Based on the LC50 value tapak dara leaves extract was not effective against the larvae of Culex quinquefasciatus.
Keyword: Catharanthus roseus, Culex quinquefasciatus, larvicide

Judul: Efektivitas Ekstrak Daun Sambang Colok (Aerva sanguinolenta) sebagai Larvasida Nyamuk Aedes aegypti dan Culex quinquefasciatu
Abstrak: Control of mosquito vectors need to be considered because it's role as vector of various diseases. Control efforts to reduce mosquito population more using synthetic insecticides at this time. The controling has become difficult because of resistance to synthetic insecticides. This research was aim to determine the effectiveness of sambang colok (Aerva sanguinolenta) leaf extract as mosquito larvicide against third instar larvae of Aedes aegypti and Culex quinquefasciatus. The study was conducted from April to July 2011 and performed in two stages. First stage was the extraction and phytochemical test and second stage was effication test of those extract againts larvae. The result showed that both of 91.7% Ae. aegypti larvae and 96.7% Cx. quinquefasciatus died at 1000 ppm after 24 hours exposure. Mortality of larvae increased with increasing the extract concentration and duration of exposure. The value of LC50 respectively from Ae. aegypti and Cx. quinquefasciatus were 494.47 ppm and 243.33 ppm. Sambang colok leaf extract was potential as a mosquito larvicide.
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Judul: Penetapan Harga Jaminan Polis Asuransi Jiwa dengan Premi  Tahunan dan Opsi Surrender
Abstrak: Asuransi jiwa memberikan perlindungan pada tertanggung (pemegang polis) jika mengalami risiko finansial, dengan suatu perjanjian tertanggung harus membayar premi. Premi yang sudah terkumpul pada perusahaan asuransi dapat diinvestasikan, yang salah satu tempatnya adalah di pasar bursa. Perusahaan asuransi menawarkan suatu kontrak kepada pemegang polis yang disebut dengan kontrak partisipasi. Pada kontrak partisipasi risiko finansial dan keuntungan dibagi dengan pemegang polis dan biasanya keuntungan tersebut dimasukkan ke dalam cadangan polis pada tiap akhir tahun kontrak. Hal ini berarti secara tidak langsung perusahaan asuransi menyatakan penambahan pertanggungan, sehingga mengakibatkan perubahan benefit yang diterima oleh pemegang polis. Pada kontrak partisipasi ini, pemegang polis diberikan hak untuk mengakhiri kontrak (opsi surrender). Pada kontrak partisipasi asuransi jiwa endowmen terdapat opsi bonus (bonus option) yang penghitungan besar preminya dengan pendekatan tipe Eropa dan opsi surrender (surrender option) dengan tipe Amerika.
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