Building an Apple Ipad Mini Theater System Through Ixtreamer

IPad as a tablet PC was designed to be used as personal tablet PC. It offers several exciting features for users to browse, schedule, open documents, play game, listen to music, view photos, and more. Unfortunately, they only can be enjoyed personally. They are possible to extend by the help of couple of peripherals such as Apple Digital AV adapter, Camera Connection Kit, Composite Cable, etc. It may not result the great performance which involves limitation to iPad for wider use. The features offered are possible to extent in the purpose of using iPad not only as personal device but also USAge of iPad for larger scope. Xtreamer technology, specifically iXtreamer, make it possible for iPad to enhance and build a mini theater system. Their combination will improve the perform of iPad. A research was conducted to explore the limitations it has and find solutions. By combining iPad and iXtreamer, an enhanced function of iPad will show how the iPad becomes a mini theater system. This system is extending the capability of iPad previously as a personal device only to a great system offering high multimedia feature

Pengelolaan Penggunaan Bahan Bakar Minyak Yang Efektif Pada Transportasi Darat

Penggunaan bahan bakar minyak transportasi masih terus meningkat antara lain karena pertumbuhan kendaraan bermotor yang sangat cepat dan belum terkendalikan. Masalah utama adalah bagaimana pengelolaan penggunaan BBM secara efektif. Metode yang digunakan adalah deskriptif evaluatif, dan melakukan analisis kebijakan publik untuk mengajukan langkah yang perlu ditempuh

Effect of Microwave Pretreatment on Production of Reducing Sugar From Oil Palm Empty Fruit Bunches

Perlakuan pendahulan biomassa merupakan tahapan terpenting dalam memproduksi produk-produk berbasis bio (bio-based products) secara biologis. Pada penelitian ini, energi gelombang mikro (microwave) digunakan selama perlakuan pendahuluan untuk meningkatkan kinerja proses sakarifikasi tandan kosong kelapa sawit (TKKS) menjadi gula-gula pereduksi. Faktor-faktor yang mempengaruhi perlakuan pendahuluan seperti daya (180-360 watt), waktu iradiasi (5-30 menit), dan solid loading (2,5%-7,5%) dievaluasi. Kinerja hidrolisis TKKS yang telah diberi perlakuan pendahuluan selanjutnya dianalisis dengan Cellic CTec2. Hasil penelitian menunjukkan bahwa cairan residu yang diperoleh setelah perlakuan pendahuluan menghasilkan gula pereduksi dalam jumlah yang rendah, yaitu antara 1,39 dan 3,92 mg/g-TKKS. Akan tetapi, setelah padatan residu dihidrolisis secara enzimatis, rendemen gula pereduksi meningkat secara signifikan. Menariknya, hanya pada level daya terendah (180 watt), gula pereduksi meningkat seiring dengan perpanjangan waktu iradiasi untuk semua solid loading. Sebaliknya, pada 360 watt, semakin lama waktu iradiasi diterapkan, semakin rendah gula pereduksi yang diperoleh untuk semua solid loading. Gula pereduksi tertinggi dihasilkan hingga 151 mg/g-TKKS, yaitu menggunakan 5% padatan pada 180 watt selama 25 menit. Berdasarkan hasil-hasil ini, perlakuan pendahuluan menggunakan gelombang mikro yang diikuti dengan hidrolisis enzimatis merupakan salah satu metode yang potensial untuk memproduksi gula dari TKKS.Pretreatment of biomass is the most crucial step in the biological production of bio-based products. In this study, microwave energy was used during the pretreatment process to enhance the saccharification performance of oil palm empty fruit bunches (OPEFB) into reducing sugar. The influential factors of pretreatment such as power level (180-360 watt), irradiation time (5-30 min), and solid loading (2.5%-7.5%) were evaluated. The performance of pretreated OPEFB hydrolysis was subsequently assessed by Cellic CTec2. The result showed that spent liquor produced after pretreatment only released a low amount of reducing sugar in the range between 1.39 and 3.92 mg/g-OPEFB. After residual solid was enzymatically hydrolyzed, a significant increase in the reducing sugar yield occurred. Interestingly, only at the lowest power level (180 watts), the reducing sugar rose along with the extension of irradiation time for all solid loadings. On the contrary, the longer irradiation time was applied, the lower reducing sugar was acquired at 360 watts for all solid loadings. The highest reducing sugar was produced up to 151 mg/g-OPEFB using 5% solid at 180 watts for 25 min. This indicated that microwave pretreatment followed by enzymatic hydrolysis was one of the potential methods to recover sugars in OPEFB