Judul: Perencanaan Drainase Menggunakan Konsep Zero Runoff di Cluster Pinnacle, Dramaga Cantik
Abstrak: Bogor merupakan salah satu kota dengan curah hujan yang tinggi. Dengan demikian Bogor membutuhkan daerah resapan air yang cukup dan memadai. Penelitian ini bertujuan untuk menerapkan konsep drainase zero runoff di Cluster Pinnacle Dramaga Cantik. Curah hujan rencana yang digunakan adalah sebesar 123 mm. Selanjutnya, data yang telah diolah menggunakan metode Gumbel diuji kecocokan distribusi frekuensi terhadap distribusi peluang yang mewakili distribusi frekuensi tersebut. Analisis limpasan melibatkan koefisien tertimbang dan jenis tutupan lahan. Hasil penelitian menunjukkan bahwa nilai koefisien limpasan wilayah adalah 0,57 dengan volume limpasan mencapai 14034,5 m³.Volume limpasan total yang dihasilkan adalah 1478,33 m³. Dengan adanya bangunan resapan, debit limpasan dapat dikurangi menjadi 0,005 m³/detik. Sumur resapan dirancang dengan diameter 1,4 meter, kedalaman 2,3 meter, dan luas permukaan 11,65 m². Efektivitas bangunan resapan ini mampu mengurangi volume limpasan hingga 54,46% menjadi 673,28 m³ terserap. Jumlah sumur resapan yang dibutuhkan adalah sebanyak 239 buah. Rancangan Anggaran Biaya (RAB) pembuatan sumur resapan di Cluster Pinnacle, Dramaga Cantik sebesar Rp. 1.111.200.837,18. Dapat disimpulkan bahwa konsep zero runoff efektif dalam mengurangi limpasan di Cluster Pinnacle Dramaga Cantik., Bogor, known for its high rainfall, requires sufficient water retention areas. This study aims to implement the zero runoff drainage concept in Cluster Pinnacle Dramaga Cantik, utilizing a planned rainfall of 123 mm. Data processed using the Gumbel method were tested for frequency distribution fit, revealing a regional runoff coefficient of 0.57 and a total runoff volume of 14,034.5 m³. With infiltration structures, runoff reduced to 0.005 m³/second. Infiltration wells, sized at 1.4 meters in diameter, 2.3 meters in depth, and 11.65 m² in surface area, effectively absorbed 54.46% of runoff volume, totaling 673.28 m³. A total of 239 infiltration wells are needed, with an estimated budget of Rp. 1,111,200,837.18 for construction. This research concludes that the zero runoff concept effectively mitigates runoff in Cluster Pinnacle Dramaga Cantik.
Keyword: drainage, drainase, limpasan, sumur resapan, runoff, infiltration well

Judul: Perencanaan Sistem Drainase dan Sumur Resapan di Cluster Vega Residence, Pondok Rajeg, Kota Depok
Abstrak: Limpasan yang terjadi akibat hujan merupakan salah satu faktor penyebab terjadinya banjir apabila tidak dikelola dengan baik. Meningkatnya lahan terbangun, menyebabkan peningkatan debit limpasan dan berkurangnya daerah resapan air hujan. Penelitian ini bertujuan merencanakan saluran drainase serta sumur resapan pada Cluster Vega Residence di Kota Depok. Metode yang dilakukan terdiri dari analisis curah hujan, analisis debit limpasan, desain saluran drainase, uji permeabilitas, dan desain sumur resapan. Curah hujan dianalisis dengan metode Gumbel. Dari hasil analisis diperoleh curah hujan rencana yang digunakan untuk perencanaan saluran drainase dengan periode ulang hujan 2 tahun sebesar 122,74 mm dan untuk sumur resapan dengan periode ulang hujan 5 tahun sebesar 150,95 mm. Debit limpasan untuk periode ulang hujan 2 tahun untuk perencanaan drainase sekitar 0,002 – 0,025 m3 /detik. Berdasarkan nilai debit limpasan, saluran drainase direncanakan akan menggunakan u-ditch berukuran 0,3 x 0,3 m pada semua DTA. Volume andil banjir untuk periode ulang hujan 5 tahun yang digunakan untuk perencanaan sumur resapan komunal sebesar 15,63 m3 dengan nilai permeabilitas rata-rata 2,18 cm/jam, sehingga direncanakan 1 buah sumur resapan dengan dimensi 2 x 2 x 4 m., Runoff due to rain is one of the factors causing flooding if it is not managed properly. The increasing of the built-up area will increase runoff and decrease infiltration area. This study aims to plan drainage channels and infiltration wells in the Cluster Vega Residence, Depok City. The method used consists of analysis of rainfall, runoff discharge analysis, drainage channel design, permeability test, and infiltration well design. Rainfall was analyzed by the Gumbel method. The analysis result showed that the planned rainfall used for planning drainage channels with a rainfall return period of 2 years was 122,74 mm and for infiltration wells with a rainfall return period of 5 years was 150,95 mm. The runoff discharge for 2 year rainfall return period for drainage planning is around 0,002 – 0,025 m3 /s. Based on the runoff discharge, drainage channels are planned to be built using u-ditch with a dimension of 0,3 x 0,3 m for all catchment areas. Flood volume for the 5 year rainfall return period for communal infiltration wells planning was 15,63 m3 with an average permeability of 2,18 cm/hour, so one infiltration well was designed with a dimension of 2 x 2 x 4 m.
Keyword: channel design, flood, runoff discharge

Judul: Variasi Alel dari Gen 5-HTT (Penyandi Agresivitas) pada Macaca nemestrina
Abstrak: Macaca nemestrina is an aggressive primate. The aggresivity is influenced by many factors, one of them is by a gene. The 5-HTT gene encodes the serotonin transporter that affects the regulation of serotonergic system and its receptor by modulating the concentration of serotonin in extracellular fluid. Variation in promoter and intron region can change the transcriptional activity of the 5-HTT gene, mainly the activity of the transporter and serotonin uptake. The transporter change activity influenced aggressivity, emotion, motor function, and some cognitive traits in primates. This research aimed to determine alelles variant of 5-HTT gene (encoding aggresivity) in M. nemestrina. Samples used in this research consisted of 56 M. nemestrina. The gene was amplified by the Polymerase Chain Reaction (PCR) method. Amplification in promoter region revealed two alleles and three genotypes with the frequencies of L and S alleles were 88,18% and 11,82%, respectively. Amplification of the third intron region showed two alleles with the frequency of l and s alleles were 55,4% and 44,6%, respectively. None of the individual had s/s genotype in the third intron region. Short allele was dominant to long allele. The presence of at least one short allele decreased transcription activity. There was one individual with S/S genotype in promoter region that was possibly to be the alpha male in the group.
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