Judul: Analisis Sistem Distribusi Air Bersih di Perumahan Taman Yasmin Sektor Enam, Bogor, Jawa Barat
Abstrak: Water distribution system is used to distribute water throughout the service area. The objectives of this research was to analyze water distribution system at Taman Yasmin Residence sector six. The analysis was held based on questioner and Epanet 2.0. The result showed that the water quality fulfilled Permenkes No. 492/Menkes/Per/IV/2010. Based on interview about 40 respondents said that water physical quality was suitable. At inlet water discharge was 7,05 l/s so it fulfilled the total of water needs (2,67 l/s). But costumers said that water discharge is smaller in the morning and in the afternoon. The average pressure was 1,9 bar and the inlet pressure was 3,56 bar. So it was suitable with PDAM regulation about maximum pressure on main pipe and secondary pipe (2-4 bar). Based on simulations using Epanet 2.0 there were 4 nodes that had pressure more than 2 bar 3 at tertiary pipe. So it was necessary to install PRV to reduce the pressure on those nodes because the maximum pressure on tertiary pipe was 2 bar. Based on the result of the research it can be concluded that the water distribution system at Taman Yasmin Residance sector six was good and PDAM Tirta Pakuan was expected to increased the discharge in the morning and in the afternoon.
Keyword: distribution system, pressure, discharge, Taman Yasmin Residance sector six, Epanet 2.0

Judul: Evaluasi Kinerja Sistem Distribusi Air Pada PDAM Tirta Pakuan di Perumahan Griya Melati, Bogor, Jawa Barat
Abstrak: Water is one of the basic requirement for human being. It means that maintenance and menagement of water distribution system gets the first priority. The objective of this research was to evaluate performance of PDAM Tirta Pakuan water distribution system in Griya Melati recidence. The analysis was held based on questioner and Epanet 2.0. Analysis of network capability’s performance was done, including quantity, pressure, continuity, and quality, and also costumer satisfaction about PDAM performance. Based on costumer satisfaction survey about water physical quality parameters (i.e. taste, color and smell), the water was good, even sometime its smell like chlorine. The comparison between water use measurement and Epanet 2.0 simulation showed that PDAM was succeed to fulfill costumer demand even the heads and discharges were fluctuated. The highest headloss on pipe 19 was 0.072 m because the changed of pipe’s diameter from 100 mm to 50 mm so the velocity was increasing. PDAM has been distributing water for 24 hours so the water were always available for customers. Based on water quality test in PDAM laboratory, the result was suitable with Permenkes RI. No. 492/Menkes/Per/IV/2010.
Keyword: clean water, costumer, Epanet 2.0, performance, water distribution system

Judul: Posisi Filogenetik Kura-Kura Carettochelys Insculpta  (Reptillia: Testudinata)
Abstrak: Carettochelys insculpta is an endemic freshwater turtle of southern Papua and northern Australia. Phylogenetic position of this turtle is remain unresolved until now. Most of the research conducted show close relationships of C. insculpta and members of Trionychidae family. However, some of the research show distance between C. insculpta and members of Trionychidae family. This research is conducted to analyze phylogenetic relationship between C. insculpta and other members of Testudinata using 12S rRNA, 16S rRNA, and both gene as markers. DNA samples were obtained from three different organisms of C. insculpta. Two species used as outgroups were Alligator mississippiensis and Iguana iguana. Phylogenetic analysis was carried out using Neighbor-Joining method with Felsenstein 1981 (F81) modeltest. A polytomy tree of Testudinata was produced by using 12S rRNA gene. However, analysis using 16S rRNA and both genes as markers confirmed that C. insculpta was located between the Chelonidae and the Trionychidae family.
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