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International Journal of Science and Engineering (IJSE)

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Published by Universitas Diponegoro

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Core Subject : Engineering,

Engineering

The scope of journal covers all area in the application on chemical, physical, mathematical, biological, agricultural, corrossion, and computer science to solve the engineering problems.

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Articles 14 Documents

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Search results for , issue "Vol 4, No 2 (2013)" : 14 Documents clear

Physical Characteristics of Pressed Complete Feed for Dairy Cattle M. Munasik; C. Imam Sutrisno; Syaiful Anwar; Caribu Hadi Prayitno
International Journal of Science and Engineering Vol 4, No 2 (2013)
Publisher : Chemical Engineering Diponegoro University

The study was aimed to evaluate the physical characteristics of the pressed complete feed in the forms of cube, cylinder and ball. The study was conducted to get a complete feed of dairy cows that can be developed commercially. The evaluation was done on a physical test : bulkiness, hardness and hygroscopic properties of pressed complete feeds. The results of this research showed that the bulkiness of pressed complete feed in the forms cubes, cylinders and balls were between 0.20 up to 0.48 liter/kg; the hardness of pressed complete feed, cylinders and balls were 3 lbs up to 14 lbs; the hygroscopic factor of pressed complete feed in the forms cubes, cylinders and balls were around 1.10% up to 9.69%. The pressed complete feed in the forms of cube and cylinder are better than the form of ball in physical characteristics.doi: 10.12777/ijse.4.2.2013.61-65

Intake and Digestibility of Cattle’s Ration on Complete Feed Based-On Fermented Ammonization Rice Straw with Different Protein Level Hamdi Mayulu; S. Sunarso; M. Christiyanto; F. Ballo
International Journal of Science and Engineering Vol 4, No 2 (2013)
Publisher : Chemical Engineering Diponegoro University

Complete feed (CF) utilization is expected to have impact on higher productivity due to increased intake and digestibility. The objective of research was to evaluate the effects of different level protein of CF based-on fermented ammonization (amofer) rice straw to Simmental offspring intake and digestibility Twenty males Simmental offspring with average live weight 372.15± 26.64 kg (coefficient of variance 7.16%) were used in this study. Feed treatment consisted of BC Nutrifeed 132 concentrate as control feed (T0) and CF based-on amofer rice straw consisted of T1, T2, T3 and T4 which had crude protein content 11, 12, 13 and 14% respectively and also total digestible nutrients (TDN) ± 62%. Completely randomized design with five treatments and four replicates were designed for this research. Data was analyzed by analysis of variance (ANOVA) at 95% significance level. The results showed that different crude protein did not affect the intake of dry matter, organic matter, crude protein and TDN. It was significantly affected the digestibility of dry matter, organic matter and crude protein (p<0.01). The highest digestibility was obtained to treatment with 12% crude protein and ± 62% TDN. Conclusion of this study was different level of crude protein constituted in CF which produced from specific material resource was proven to have impact in increasing cattle’s digestibility.Doi: 10.12777/ijse.4.2.2013.86-91 [How to cite this article: Mayulu, H., Sunarso, S., Christiyanto, M. and Ballo, F. (2013). Intake and Digestibility of Cattle’s Ration On Complete Feed Based-On Fermented Ammonization Rice Straw With Different Protein Level. International Journal of Science and Engineering, 4(2),86-91. Doi: 10.12777/ijse.4.2.2013.86-91]

Development of Navigation Control Algorithm for AGV Using D* search Algorithm Jeong Geun Kim; Dae Hwan Kim; Sang Kwun Jeong; Hak Kyeong Kim; Sang Bong Kim
International Journal of Science and Engineering Vol 4, No 2 (2013)
Publisher : Chemical Engineering Diponegoro University

In this paper, we present a navigation control algorithm for Automatic Guided Vehicles (AGV) that move in industrial environments including static and moving obstacles using D* algorithm. This algorithm has ability to get paths planning in unknown, partially known and changing environments efficiently. To apply the D* search algorithm, the grid map represent the known environment is generated. By using the laser scanner LMS-151 and laser navigation sensor NAV-200, the grid map is updated according to the changing of environment and obstacles. When the AGV finds some new map information such as new unknown obstacles, it adds the information to its map and re-plans a new shortest path from its current coordinates to the given goal coordinates. It repeats the process until it reaches the goal coordinates. This algorithm is verified through simulation and experiment. The simulation and experimental results show that the algorithm can be used to move the AGV successfully to reach the goal position while it avoids unknown moving and static obstacles. [Keywords— navigation control algorithm; Automatic Guided Vehicles (AGV); D* search algorithm]

Result of Six Local Upland Rice Cultivars of East Kalimantan at Different Plant Spacing R. Rusdiansyah; Yazid Ismi Intara; Budi Indra Setiawan
International Journal of Science and Engineering Vol 4, No 2 (2013)
Publisher : Chemical Engineering Diponegoro University

The objective of this research was to evaluate the response of six upland rice cultivars from East Kalimantan over different plant spacing. The experiment was conducted at Kutai Kartanegara district in East Kalimantan, Indonesia. The experimental design used was the factorial experiment in Randomized Completely Block Design (RCDB) with three replications. The first factor was six upland rice cultivars of East Kalimantan, i.e.: v1 (Mayas Pancing), v2 (Gedagai), v3 (Bogor Putih), v4 (Mayas Putih), v5 (Serai) and v6 (Kunyit). The second factor was plant spacing i.e.: j1 (20 x 20 cm) and j2 (30 x 30 cm). The results showed that among the six cultivars, Gedagai, Bogor Putih and Kunyit produced higher yield than other varieties. Gedagai and Bogor Putih cultivars produced higher yield of 2.99 ton ha-1 at plant spacing 20 x 20 cm, whereas Kunyit produced higher yield of 2.66 ton ha-1 at plant spacing 30 x 30 cm. The agronomic characters showed that plant height of the six cultivars differed significantly at harvest time. In addition, highly significant differences of harvest time were observed of the six cultivars.Doi: http://dx.doi.org/10.12777/ijse.4.2.2013.66-68

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