Judul: Keragaman Jenis dan Fluktuasi Kepadatan Nyamuk pada Peternakan Sapi Unit Reproduksi dan Rehabilitasi
Abstrak: The aim of the research to study species diversity and density fluctuation of mosquitoes in cattle farm Unit Reproduction and Rehabilitation Bogor Agricultural University (URR IPB). Mosquitoes was collected by light trap from 6 pm to 6 am on June to October 2012. The mosquitoes preservation used pinning method to identify the species. There were 470 mosquitoes from 8 times collections, consisted of 7 species Culex (Cx. tritaeniorhynchus, Cx. gelidus ,Cx. bitaeniorhynchus, Cx. fuscocephalus, Cx. hutchinsoni, Cx. quinqeufasciatus, and Cx. pseudosinensis), 1 species Armigeres (Ar. subalbatus), 1 species Anopheles (An. nigerrimus), and 1 species Aedes (Ae. albopictus). The dominant species was Armigeres subalbatus (35.53%) and Cx. tritaeniorhynchus (21.91%). The highest mosquitoes density was discovered at 6 pm to 7 pm. The result of Pearsons corellation analysis showed that corellation of mosquitoes density to rainfall was -0.641, to humidity 0.21, and to temperature 0.681.
Keyword: mosquitoes fluctuation., mosquitoes density, mosquitoes, light trap, cattle farm

Judul: Keragaman jenis dan aktivitas nyamuk pada Peternakan Sapi di Unit Reproduksi dan Rehabilitasi FKH IPB
Abstrak: Mosquitoes are annoying insects because of a noise, blood sucker, transmit pathogens, and trigger allergies in some people. Mosquitoes play a role in the transmission of zoonoses such as JE, RVF, WN, etc. Information about diversity of mosquitoes that play as vectors on zoonoses in Indonesia has limited. The purpose of this study was to determine the diversity, population fluctuation, and the activity of mosquitoes at cattle farm in Unit Reproduction and Rehabilitation (URR) Bogor Agricultural University. Mosquitoes was collected by BLC method from 6 pm to 6 am on March to May 2013. There were 104 mosquitoes from 8 times collections, consisted of 7 species Culex (Cx. gelidus, Cx. bitaenorhynchus, Cx. quinquefasciatus, Cx. huchinsoni, Cx. pseudosinensis, Cx. fuscocephalus, Cx. tritaenorhynchus) and one Armigeres (Ar. subalbatus). The dominant species was Cx. gelidus (28.85%) and Ar. subalbatus (17.30%). The highest mosquitoes activity was discovered at 6 pm to 7 pm.
Keyword: Bogor Agricultural University, URR FKH IPB, Culex, BLC, Armigeres

Judul: Sintesis dan Pencirian Natrium Titanat (Na2Ti2O4(OH)2) Berbahan Dasar Titanium Dioksida
Abstrak: TiO2 can be utilized as basic material for synthesis of sodium titanate (Na2Ti2O4(OH)2). This research was purposed to synthesize and characterize sodium titanate from TiO2 rutile powder as a basic material. Sodium titanate was synthesized by hydrothermal process at temperature 130 °C by mixing TiO2 rutile powder with 5 M and 10 M NaOH solution, then each was calcinated at temperature 700 °C. The energy dispersive X-ray analysis showed that sodium titanate has been successfully synthesized. This result was also supported by functional group analysis with Fourier transform infrared (FTIR) spectrofotometer showing the existence of Ti-O-Na vibration band at 989.42 cm-1. The formation of sodium titanate was depend on the reaction condition such as temperature, reaction time, and NaOH concentration. Scanning electron microscope image indicated that sodium titanate synthesized at 130 °C in 20 hours reaction time with 10 M NaOH had crystal size of 99.37 nm.
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