Judul: Desain Kolam Retensi Berbantu Komputer di Cibuluh Kota Bogor
Abstrak: Kolam retensi berfungsi mengendalikan limpasan permukaan dan konservasi air hujan dalam menjaga akumulasi air tanah. Penelitian ini bertujuan mengetahui debit banjir rencana, mengetahui volume air yang harus ditampung kolam retensi, menentukan kapasitas volume tapungan kolam retensi yang optimal, menghasilkan rancangan desain teknis kolam retensi yang efektif, dan menghasilkan rencana anggaran biaya. Penelitian dilaksanakan di Kampung Cibuluh, Kelurahan Tanah Baru, Kecamatan Bogor Utara, Kota Bogor, Jawa Barat. Komulatif debit banjir yaitu 12,01 m3/det. Kapasitas sungai Ciheuleut adalah 9,38 m3/det. Kapasitas total volume kolam retensi sebesar 5272,52 m3. Kapasitas lahan pembangunan kolam retensi adalah 10481 m2. Luas kolam retensi yang bisa dibangun adalah 4241 m2. Kedalaman galian kolam retensi adalah 4 m sehingga kapasitas kolam retensi sebesar 16964 m3. Struktur kolam retensi berbentuk oval. Dimensi diameter terpendek sebesar 50 m dan diameter terpanjanng sebesar 108 m. Rencana kedalaman total kolam 6 m mampu menampung air maksimal 25446 m3. Direncanakan pintu air jenis sorong dengan bentang bebas 1300 mm x tinggi 1600 mm dengan debit 4,89 m3/detik. Dibutuhkan total 5 pintu air untuk kolam retensi pada inlet dan outlet. Biaya yang dibutuhkan dalam pembangunan Kolam Retensi Cibuluh adalah sebesar Rp13.680.570.000,00.
Keyword: Dimensi, kapasitas, kolam retensi, pintu air, volume

Judul: Perencanaan Sumur Resapan dan Kolam Retensi di Bogor Barat Agrohills Kabupaten Bogor
Abstrak: Bogor Barat Agrohills adalah proyek kaveling berkonsep eduwisata di Kecamatan Leuwisadeng Kabupaten Bogor. Saat ini pemerintah berupaya untuk menyimpan air sebanyak mungkin ke dalam tanah dan berusaha untuk mencapai zero runoff. Sejalan dengan itu maka penelitian bertujuan merencanakan sumur resapan dan kolam retensi di Bogor Barat Agrohills. Dari hasil analisis diperoleh nilai permeabilitas tanah di lokasi tidak memenuhi syarat SNI 03-2453-2002 sehingga direncanakan hanya pembuatan kolam retensi. Dari analisis curah hujan dengan metode Gumbel, diperoleh curah hujan rencana sebesar 147,9 mm untuk periode ulang 5 tahun. Dari hasil pengamatan diperoleh 4 daerah tangkapan air (DTA) dan nilai koefisien limpasan gabungan sebesar 0,32. Kolam retensi direncanakan memiliki 3 tipe dan berjumlah satu buah di tiap DTA. Tipe 1 memiliki panjang 10,0 m dan lebar 6,7 m. Tipe 2 memiliki panjang 8,6 m dan lebar 5,8 m. Tipe 3 memiliki panjang 6,4 m dan lebar 4,3 m. Ketiga tipe kolam memilki kedalaman 4 m. Lokasi kolam retensi direncanakan di dekat outlet setiap DTA. Kolam tipe 1 berjumlah dua buah sedangkan kolam tipe 2 dan tipe 3 masing - masing satu buah. Biaya pembuatan kolam retensi tipe 1 (2 buah kolam) sebesar Rp159.620.000,00, tipe 2 sebesar Rp68.310.000,00, dan tipe 3 sebesar Rp52.150.000,00., Bogor Barat Agrohills is a land plot project with an edutourism concept in Leuwisadeng District, Bogor Regency. Currently the government is trying to store as much water as possible into the ground and to achieve zero runoff. Accordingly, this study aims to plan infiltration wells and retention ponds in Bogor Barat Agrohills. From the results of the analysis, the permeability value of the soil at the location does not meet the SNI 03-2453-2002 requirements, so only retention ponds were planned. From the rainfall analysis using the Gumbel method, a design rainfall was 147.9 mm for the 5-year return period. From the observations were obtained 4 water catchment areas and a combined runoff coefficient value of 0,32. Three types of retention ponds were planned and one pond in each catchment area. Type 1 had dimention of 10,0 m long and 6,7 m wide and type 2 had 8,6 m long and 5,8 m wide, while type 3 had 6,4 m long and 4,3 m wide. The three types of ponds had a depth of 4 m. The location of the retention ponds were planned near the outlet of each DTA. There were two ponds of type 1 pond and one each of type 2 and type 3 ponds. The construstion cost of retention pond type 1 (2 ponds) was IDR159.620.000.00, type 2 was ID68.310.000.00, and type 3 was IDR52.150.000.00.
Keyword: permeability, runoff coefficient, runoff volume

Judul: The Effects of Avocado Oil (Persea americana Mill.) as Hair Growth Promoters on Rats (Rattus novergicus)
Abstrak: Essential oils and carrier oils are commonly used as pharmacology cosmetics in promoting hair growth. Avocado oil is one of the carrier oils rarely discussed as a hair growth-promoting cosmetics as compared to other oils. This study determined the effects of avocado oil (Persea americana Mill.) as hair growth promoter on rats (Rattus norvegicus). A total of 6 rats were used and each rat was divided into 4 treatment areas: control, 1 smear a day, 2 smears a day, and 3 smears a day. The parameters are hair length and irritation reaction. Data were collected on day 6th, 9th, 12th and 15th. Descriptive analysis was initially performed to examine the trend of the data. Based on the trend of the data, the treatment of 1 smear a day showed a slight increase in hair length. Subsequently, ANOVA one-way and Tukey tests were conducted to determine the statistical significance of the results. The statistical analysis results indicated that avocado oil did not have a significant effect as a hair growth promoter. Furthermore, no signs of irritation were observed on the application site of the rats. In conclusion, while the descriptive analysis suggested 1 smear a day of avocado oil show effects as hair growth promoter, however the subsequent statistical analysis only support little significant effect.
Keyword: avocado oil, hair growth, irritation