Judul: Pengaruh Metode Isolasi terhadap Sifat Nanoselulosa: Meta-analisis
Abstrak: There are many researches about nanocellulose isolation and its characterization. However, a quantitative conclusion according to the past findings about the difference between the effect of the isolation method on the properties of nanocellulose hasn’t been studied yet. In this final project, meta-analysis was carried out from 28 scientific journals and gathered 404 treatments which grouped into each parameter. Fiber diameter, fiber length, crystallinity index, temperature on set, and temperature at maximum degradation were the parameter analyzed by applying independent t-test method, while tensile strength, tensile modulus, and elongation at break were the parameter analyzed by applying standard mean difference method. Fiber length, fiber diameter, temperature at maximum degradation, tensile strength, tensile modulus, and elongation at break were significantly affected by the isolation method p < 0.05. Crystallinity index, and onset temperature were not significantly affected by the isolation method P > 0.05. This result showed that there were parameters which more significantly affected to the isolation method which should be more taken in account for the future development of nanocellulose.
Keyword: independent t-test, isolation method, meta-analysis, nanocellulose properties, standardized mean difference

Judul: Sintesis Nanoselulosa dari Tongkol Jagung dengan Perlakuan Hidrolisis Kimia dan Homogenisasi
Abstrak: Corn cobs has a high potency to be used as a source of raw materials for nanocellulose synthesis.The objective of this research is to synthesize nanocellulose from corn cobs with chemical hydrolysis and homogenization treatment. Alkali treatment,bleaching treatment, acid treatment and homogenization treatment on the corn cobs are effective in the depolymerization and defibrillation of the fibre to produce nanocellulose. This research consists of four main steps those are pre-elliminary research, chemical analysis, synthesize nanocellulose, and final product characterization.Parameters thatwillbe tested aretheconcentration ofNaOH(2%, 4%, and 8%), and the time ofhomogenization (2 hours, 3 hours, and 4 hours). The results show that the concentration of NaOH affect the level of cellulose and lignin final product.The bestconcentration ofNaOH needed to isolatecelluloseis 2%. Futhermore, the concentration of NaOH also affected the color and suspension of the final product. Final product with 8% NaOH treatment had the brightest color and the most stable suspension, while the homogenization time did not affect the colorand can not be seen the effect to the suspension formation of the final product . ScanningElectronMicrocope(SEM) results showed thatthechemical hydrolysis and mechanical treatmenthad successfully isolated thecelluloseandits sizehad reachedbelow 100nm, but stillin small amounts. Cellulose that was observed withSEM had an averagesize of80-270nmdiameter.
Keyword: 

Judul: Cycle Hamilton pada Graf Lengkap, Graf Regular, dan Graf 2-Connected 4-Regular Berorder Kurang dari Sepuluh
Abstrak: Suatu graf disebut graf Hamilton apabila graf tersebut memuat cycle Hamilton, yaitu cycle yang melewati setiap vertex tepat satu kali. Menentukan keberadaan cycle Hamilton pada suatu graf dapat menggunakan syarat cukup yang berupa teorema-teorema yang telah diperkenalkan sejak tahun 1950-an. Beberapa syarat cukup yang dibahas dalam karya ilmiah ini adalah syarat cukup yang berhubungan dengan graf lengkap dan graf regular. Suatu graf lengkap berorder 𝑛������ ≥ 3 dan graf r-regular berorder 𝑛������ ≤ 2𝑟������ + 1 merupakan graf Hamilton, Karena kedua graf tersebut memuat cycle Hamilton. Selanjutnya, syarat cukup tersebut digunakan untuk menentukan keberadaan cycle Hamilton pada graf 2-connected 4- regular berorder kurang dari 10.
Keyword: graf Hamilton, graf regular, graf lengkap, graf 2-connected 4-regular