Judul: Perancangan Jaringan Irigasi Pedesaan Di Desa Leuwisadeng, Kecamatan Leuwisadeng, Kabupaten Bogor, Jawa Barat
Abstrak: Abstrak: Air merupakan kebutuhan yang sangat vital bagi kelangsungan hidup manusia, binatang dan tanaman. Di Desa Leuwisadeng, lahan pertaniannya masih kesulitan air untuk irigasi karena lokasi lahan yang berbukit-bukit dan petani setempat belum bisa memanfaatkan sumber air yang ada. Penelitian ini bertujuan untuk mendesain bangunan hidrolik serta jaringan irigasi untuk memenuhi kebutuhan air bagi penduduk, ternak dan tanaman. Air yang akan digunakan untuk keperluan irigasi diambil dari parit yang ada di dekat lahan. Parit ini memiliki debit sebesar 16 lt/dt yang dapat mengairi lahan seluas 5 ha. Namun karena elevasi muka air sungai berada di bawah elevasi lahan pertanian, maka perlu dibangun bendung untuk meninggikan muka air. Tipe bendung yang digunakan adalah tipe skot balok. Dari bendung, air sungai dialirkan menuju reservoir untuk penampungan sementara sebelum dialirkan ke lahan pertanian, peternakan dan perikanan. Selain parit, terdapat sumber air lainnya yakni mata air. Debit mata air yang terukur sebesar 1 lt/dt lalu ditampung ke dalam bangunan penangkap mata air yang nantinya akan digunakan untuk melayani penduduk di sekitar lokasi.
Keyword: irrigation, reservoir, river, the springs, weir

Judul: Design of Spring Water Catchment Building and Water Distribution System at Kalikajar Village, Wonosobo Regency
Abstrak: Kecenderungan pertambahan penduduk di Desa Kalikajar menunjukkan peningkatan kebutuhan air bersih. Penyediaan air air bersih belum optimal karena faktor geografi dan penurunan debit pada musim kemarau. Penelitian ini dilakukan untuk merencanakan bangunan penangkap mata air dan jaringan pipa distribusi air bersih di Desa Kalikajar. Data yang digunakan berupa jumlah penduduk, kebutuhan air, dan debit mata air. Proyeksi jumlah penduduk dihitung dengan metode aritmatika, geometrik, eksponensial, dan logistik, sedangkan kebutuhan air bersih dihitung berdasarkan SNI 19-6728.1-2002. Jumlah penduduk yang mencapai 5328 jiwa pada tahun 2050 menyebabkan peningkatan kebutuhan air bersih 9.68% dan kebutuhan air domestik mencapai 4.63 L/detik. Debit mata air mencapai 10.80 L/detik. Bangunan penangkap mata air dirancang dengan Tipe B dan 3 reservoir dirancang dengan kapasitas tampungan 7 m3. Distribusi air direncanakan dengan sistem gravitasi, karena beda elevasi antara mata air dan desa lebih dari 10 m, dengan menggunakan pipa PVC berdiameter 100 – 150 mm, sepanjang 11843 m. Desain dapat diterapkan karena memenuhi persyaratan yang berlaku., The population growth in Kalikajar Village shows the increasing of water demand. Clean water availability is not optimal due to geographical factors and discharge reduction during the dry season. This research was conducted to design spring water catchment building and water distribution system at Kalikajar Village. The data of population, water demand, and water spring discharge were utilized in this research. The population growth was calculated using arithmetic, geometric, exponential, and logistic method, while water demand is calculated based on SNI 19-6728.1-2002. The population growth that reaches 5328 people in 2050 resulted in increasing water demand of 9.68% and domestic water demand reaches 4.63 L/s. The water spring discharge average was 10.80 L/s. The water spring catchment building was designed with Type B and 3 reservoir was designed with capacity of 7 m3. The water distribution was designed with gravitation system, because the elevation difference between the spring and the village is more than 10 m by using PVC pipeline with diameter of 100 – 150 mm and total length of 11843 m. The design meets the requirement standard and can be implemented.
Keyword: distribution system, reservoir, spring water

Judul: Characteristic of chili drying (Capsicum annum L.) as a natural dyeing cosmetic
Abstrak: Chilli (Capsicum sp.) contains carotenoids, which are a group of natural pigments consist of red, orange or yellow color. Carotenoids can be dissolved in lipid so that they can be applied to oil-based cosmetic ingredients. Therefore, chilli is potential to be developed as cosmetic colorants. However, pungency of red chili needs to be removed because it is irritating and it provides stinging sensation to skin. Red chilli was investigated as a potent material for a cosmetic colourant in this research because it has a nice uniform red color and has a pungency level less than cayenne pepper. The purpose of this research was to investigate the influence of blanching on drying characteristics of red chilli using a tray dryer, determine the proper time of chili blanching in sodium bisulfite solution, examine color changes stability of red chili powder as a cosmetic dye, and analyze the effect of oleoresin extraction on color and pungency level of red chili powder. The results showed that blanching could affect the drying characteristics. Blanching the chilli for 9 minutes prior drying could speed up the drying rate of chilli and thus the drying time, therefore, the chilli achieved the desired moisture content fast. Sodium bisulfite solution of 0.2%, used as the blanching media, could maintain the color well. However, longer time of blanching might cause several pigments soluble in the blanching media. Blanching the chilli for 9 minutes was able to maintain red color after the stability tested and after extraction of oleoresin. Therefore, blanching red chilli in a solution of 0.2% sodium bisulfite for 9 minutes prior drying is concluded as the best treatment to retain the color of red chilli powder
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