Judul: Design of a Rainwater Harvesting System to Fill the Reservoir in the SIL Integrated Laboratory, Dramaga Campus of IPB
Abstrak: Pemanenan air hujan merupakan salah satu cara memanfaatkan air hujan dengan cara menampung air hujan dan digunakan untuk berbagai keperluan. Penelitian ini bertujuan membuat rancangan sistem pemanenan air hujan yang bisa digunakan untuk mengisi reservoir yang telah tersedia. Penelitian dilakukan di Laboratorium Terpadu SIL, Kampus IPB Dramaga. Data yang dibutuhkan berupa data luasan atap, volume reservoir eksisting, dan data curah hujan 10 tahun terakhir. Volume curah hujan yang dapat dipanen terbesar yaitu 175,69 m3/bulan dan volume paling kecil sebesar 36,83 m3/bulan. Talang air eksisting berbentuk persegi dengan panjang 40 meter dan lebar 0.3 meter. Pipa tegak galvanis dengan diameter 5 inci yang berjumlah 6 buah. Bak kontrol yang digunakan berukuran 160,5 cm x 90 cm x 100 cm dan terhubung dengan reservoir dengan pipa ukuran 4 inci. Reservoir eksisting berjumlah 2 unit dan ukuran reservoir eksisting yaitu 5,85 meter x 1,3 meter x 1,5 meter dengan volume tampungan 22,83 m3. Sumur resapan akan dibuat dengan diameter 1 m dan kedalaman 2 m dan berjumlah 1 unit. Air hujan yang dipanen dan dikumpulkan dimanfaatkan untuk kebutuhan air kolam pembesaran ikan, Rainwater harvesting is one way to use rainwater by collecting rainwater and using it for various purposes. This study aims to design a rainwater harvesting system that can be used to fill an existing reservoir. The research was conducted at the SIL Integrated Laboratory, Dramaga Campus of IPB. The required data is in the form of roof area, the volume of the existing reservoir, and the form of rainfall data for the last 10 years. The largest volume of rainfall that can be harvested is 175.69 m3/month and the smallest volume is 36.83 m3/month. The existing gutters are square in shape with a length of 40 meters and a width of 0.3 meters. Vertical galvanized pipes with a diameter of 5 inches, totaling 6 pieces. The control tub was 160,5 cm x 90 cm x 100 cm and connected to a reservoir with a 4-inch pipe. There are 2 existing reservoirs and the size of the existing reservoir is 5.85 meters x 1.3 meters x 1.5 meters with a storage volume of 22.83 m3. Infiltration wells will be made with a diameter of 1 m, a depth of 2 m, and a total of 1 unit. Rainwater that is harvested and collected is used for the water needs of fish-rearing ponds
Keyword: Konservasi Air/Water Conservation, Air Hujan/Rainwater, Pemanenan air hujan/Rainwater Harvesting, Reservoir/Reservoir

Judul: Design of a Rainwater Harvesting System for  Filling Reservoirs at IPB University Museums and Galleries
Abstrak: Sumber daya air utama yang sering dimanfaatkan manusia adalah air tanah, tetapi eksploitasi belebihan berdampak buruk. Pada kampus IPB Dramaga Bogor memiliki curah hujan tahunan sebesar 3.500–4.000 mm. Museum dan Galeri IPB University yang dapat memanfaatkan pemanenan air hujan sebagai sumber air tambahan. Curah hujan harian yang dipakai adalah 24 tahun terakhir. Pada hasil uji parameter distribusi probalitas metode distribusi yang memenuhi adalah metode distribusi gumbel dengan periode ulang 2. Kemudian metode distribusi diuji menggunakan pengujian chi-kuadrat dan Smirnov-Kolmogorov. Sehingga didapatkan curah hujan rencana sebesar 123 mm. Pada tahun 2015 dengan curah ekstrim total volume air hujan yang dapat dipanen sebesar 477.401,76 liter. Perancangan sistem pemanenan air hujan ini menggunakan ukuran pipa sebesar 80 mm dengan kemiringan 4% dan ukuran talang yang dipakai adalah 125 mm dengan kemiringan 4% dengan kapasitas tangki FRP sebesar 20.000 liter. Pada penelitian ini efektivitas pemenuhan air per liternya sebesar 53% dan efektivitas pemenuhan air per harinya sebesar 80%. Rancangan anggaran biaya pada penelitian ini sebesar Rp83.191.000.
Keyword: rainwater harvesting, rainfall, roof

Judul: Distribution and Diversity of Ectoparasite Mites on Geckos in Indonesia
Abstrak: Data on the diversity and dispersal of parasitic mites on house geckos in Indonesia are very scarce. In this work, the distribution and diversity of mites living on three species of house geckos, namely Cosymbotus platyurus, Hemidactylus frenatus, and H. garnotii collected throughout Indonesia, has been elaborated. Geckos and mites were captured and immediately preserved in 70% ethanol. Whole mount of the mites was prepared by clearing in lactophenol followed by mounting on polyvinyl lactophenol solutions. The SEM preparation was conducted to examine the detail morphological characters of the mites. The results showed that among 448 individuals of geckos, 221 geckos were infected by Geckobia mites. Prevalences of C. platyurus, H. frenatus, and H. garnotii infested by mites were 14.8%, 50.69%, and 79.6%, respectively. Three different spesies of Geckobia (G1, G2, and G3) could be differentiated; and based on similarities of their morphological characters to ones described in published literatures, Geckobia G2 is Geckobia glebosum and Geckobia G3 is Geckobia bataviensis while G1 could not be identified to the species level. The highest mean intensity of Geckobia G1 infestation was found on H. garnotii (I=7.0), G. glebosum infestation on H. frenatus (I=3.5), and G. bataviensis infestation on H. garnotii (I=11.8). In general, C. platyurus was infested by the least number of mites. Geckobia G1 were found living on the skin folds on the claws, G. glebosum were found mainly on the body and thigh, and G. bataviensis were found on almost all parts of the host’s body. Geckobia mites are distributed randomly throughout Indonesian Archipelago, following the pattern of distribution of their hosts. So it is concluded that Geckobia G1, G. glebosum, and G. bataviensis are sympatric.
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