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: Analisis Sistem Distribusi Air Bersih di Perumahan Ciomas Permai, Kabupaten Bogor, Jawa Barat.
Abstrak: Sistem distribusi air bersih sering bermasalah dalam hal kuantitas, tekanan, kontinuitas dan kualitas air. Penelitian ini bertujuan untuk menganalisis sistem distribusi air bersih PDAM Tirta Kahuripan, Kabupaten Bogor di Perumahan Ciomas Permai. Penelitian dilakukan dengan menggunakan data primer dan data sekunder. Analisis sistem distribusi air bersih dilakukan dengan menggunakan aplikasi EPANET 2.0. Perumahan Ciomas Permai termasuk ke dalam zona 6 PDAM Tirta Kahuripan. Berdasarkan hasil penelitian didapatkan bahwa kualitas air yang didistribusikan telah sesuai dengan standar yang berlaku dan kontinyu selama 24 jam walaupun terdapat perbedaan debit yang signifikan saat jam puncak. Berdasarkan pengukuran pada hari Minggu dan Senin besarnya debit minimum sebesar 14.4 l/det dan 13.8 l/det, melebihi kebutuhan pelanggan sebesar 7.34 l/det, sedangkan tekanan berkisar antara 0.7 – 1.35 bar. Pada simulasi distribusi air bersih menggunakan EPANET 2.0 didapatkan bahwa kecepatan air dan headloss berdasarkan simulasi tidak memenuhi persyaratan yang berlaku.
Keyword: debit, EPANET 2.0, headloss, kualitas air, tekanan

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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