Judul: Analisis Pemanfaatan Limbah Kulit Singkong sebagai Bahan Bakar Alternatif Biobriket
Abstrak: Cassava skin is by-product of cassava processing such tapioca starch. In tapioca processing the skin waste accounts for approximately 15% of the total production input. The skin waste has a potential to be processed as biobriket in order to increase its added value. This study analyze the technical and economical dimension of the production. The research tests six combinations of material composition and pre-treatment of the biobriket. The production cost of each combination is also calculated. The results show that the highest calorific value is resulted from the composition of 100 percent charcoal and material sortation before combustion. The calorific value is 6.117 cal/gram. Although this composition and treatment has the highest production cost, but its cost per calory is the lowest. The performance of the biobricket produced s also tested and it is proved fulfilling the quality requirements of a briket product.
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Judul: Pengaruh Jenis dan Kadar Bahan Perekat pada Pembuatan Briket blotong sebagai bahan Bakar Alternatif
Abstrak: Briquette is one alternative fuel that is simple and has great potential to be developed. This study aims to determine the appropriate adhesive material in the manufacture of briquettes from filter cake, and to know the effect of adding tapioca adhesive or molasses adhesive in the making of filter cake briquettes. Preliminary studies conducted to find out that blotong can be utilized into briquettes. In the main study conducted by making briquettes using different adhesive materials, using adhesives molasses and tapioca adhesive with adhesive levels respectively 10%, 15%, and 20%. Preliminary research results indicate that filter cake waste into raw materials can be used briquettes. The results of descriptive analysis of this study was the addition of adhesive in the making of filter cake briquettes will cause the density becomes high, the firing rate becomes small and can increase the calorific value of briquettes from 1026 cal /gram to reach 1995 cal /gram. The resulting coal filter cake briquettes good enough, that is by generating a temperature coal between 357.22 to 496.11 ° C. In addition, this filter cake briquettes produce low ash content and levels of substances to fly higher than wood charcoal briquettes on the market. Briquette with the best quality based on the calculation method Composite Performance Index (CPI) is the briquettes with an adhesive mixture of 15% molasses. These briquettes have a calorific value and the highest temperature of the coals so much faster in boiling 300 ml of water, is for 17 minutes.
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Judul: Heisenberg Uncertainty of Double SlitSystem Based on Budiyono-Rohrlich Quantum Statistics Model
Abstrak: Interpretasi kuantum dikembangkan untuk memaknai secara fisis dengan jelas bagaimana suatu dinamika pada sistem mikroskopis yang dijelaskan dengan teori-teori kuantum, seperti interpretasi Copenhagen yang mendeskripsikan sistem kuantum sebagai suatu keadaan yang dideskripsikan dengan fungsi gelombang yang berisikan bagaimana peluang keadaan suatu sistem. Interpretasi kuantum juga bisa dibawa dari suatu sistem klasik seperti pada model statistika-kuantum Budiyono-Rohrlich yang menjelaskan bagaimana dinamika kuantum berhubungan dengan sistem klasik dengan penerapan statistika pada model Hamiltonian sistem. Fungsi distribusi dapat mendeskripsikan bagaimana suatu sistem terdistribusi pada suatu ruang pada pandangan klasik namun untuk sistem kuantum fungsi distribusi adalah peluang dari sistem tersebut. Sistem klasik dan kuantum juga dipisahkan berdasarkan pada ketidakpastian Heisenberg tentang suatu pengukuran yang tidak bisa secara sekaligus dilakukan bersamaan. Model statistika-kuantum Budiyono-Rohrlich membawa suatu sistem klasik menjadi sistem kuantum dengan dua aksioma yaitu hukum kekekalan energi rata rata dan konservasi rapat probabilitas. Sistem klasik yang didefinisikan akan diatur dengan menambahkan dua variable matematis berupa ontic extensions dan epistemic restrictions dimana kedua variabel ini yang akan menghubungkan bagaimana sistem klasik bisa diubah menjadi sebuah sistem kuantum. Dua variabel matematis tadi membuat sebuah sistem bisa diperlihatkan ketidakpastiannya lewat perhitungan simpangan rata-rata dan hasilnya akan selalu memenuhi ketidakpastian Heisenberg
Keyword: fungsi distribusi, model Budiyono-Rohrlich, ontic extension, epistemic restriction, ketidakpastian Heisenberg