Judul: Karakteristik Bambu Lapis dari Anyaman Bambu Betung (Dendrocalamus asper) yang Direkat Menggunakan Perekat MDI dan PVAc dengan Metode Pencelupan
Abstrak: Plybamboo is an innovative product that should be improved strength and appearance to produce high quality products. The purpose of this research was to analyze the influence of adhesive type, and woven pattern toward the physical and mechanical characteristics of woven plybamboo. Water content, bonding strength, and MOR of plybamboo made using MDI adhesive is suitable with SNI 01-5008.2-2000 standard. Its water content value is under 14%, its bonding strength is more than 7 kg/cm2, and its MOR is more than 320 kg/cm2. Moreover, the water content, bonding strength, and MOR of woven bamboo made using PVAc did not suitable with SNI 01-5008.2-2000 standard. The density of plybamboo was ranged between 0.41-0.68 g/cm3. Based on shrinkage and swelling test of plybamboo, swelling phase was larger than shrinkage phase. The MOE of all samples did not suitable with SNI 01-5008.2-2000 standard. Plybamboo bonded using MDI with Tindih 2 pattern has better physical and mechanical characteristics than other plybamboos.
Keyword: PVAc, plybamboo, MDI, betung bamboo, bamboo woven

Judul: Karakteristik Bambu Lapis Menggunakan Anyaman Kajang dari Bambu Andong (Gigantochloa pseudoarundinaceae)
Abstrak: Wood production from forests is decreasing. In other side, the needs on wood as raw material for wood processing industries indicate an inclination to increase. As a consequence, wood supply is getting lower and the price of raw material is increasing. Hence, an effort is needed to produce alternative materials as wood substitution to ensure the sustainability of wood-based industries. The objective of this research was to analyze the influence of adhesive types, composition of width and thickness of bamboo’s strip to the physical and mechanical properties of ply bamboo. Bamboo was used in kajang bamboo mate type with different thickness of 0.5 mm and 1 mm, and different width of 1 cm and 2 cm. The internal bonding and modulus of elasticity (MOE) were not in accordance with SNI 01-5008.2-2000 with the values of less than 7 kg/cm2 dan 80 000 kg/cm2, respectively. Modulus of Rupture (MOR) and physical properties including moisture content and density fulfilled the SNI 01-5008.2-2000 standard which were less than 320 kg/cm2 for MOR and 14% for moisture content. Plybamboos in all combinations of width and thickness using epoxy were better than plybamboo which used PVAc as adhesive. The damage testing of ply bamboo using epoxy was 20.10%-35.58%. Plybamboo using thickness of 8 mm, width of 2 cm, and glued together with epoxy had better physical and mechanical properties compared with other plybamboos.
Keyword: PVAc, plybamboo, epoxy, andong bamboo

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