Faktor Geografis Dan Konsepsi Peran Nasional Sebagai Sumber Politik Luar Negeri Indonesia

This paper discusses the geographical factor as the source of the national role conception and foreign policy of a country. Indonesia has realized his strategic geographic location that laid between two oceans and two continents since the early days of independence. Indonesia is also aware of the geographical features as an archipelagic state. Its raises awareness of Indonesia to keep his territory for the declaration of Djuanda. This paper explore the Indonesian foreign policy that still using geographical factor as a source of foreign policy. This can be seen from the efforts of Indonesia continues to participate in various regional issues that could potentially interfere the sovereignty of Indonesia such as the disputed South China Sea and East China Sea. Indonesia also seeks active in border diplomacy to ensure the sovereignty of its territory

Studi Penggunaan Kmno4 Untuk Memperpanjang Umur Simpan Pisang Muli

The purpose of this research is to investigate the influence of KMn Asoxidizingethylene and to evaluate theeffective of KMn to extend the shelf life of bananas. This research was conductedusing a single treatment with fourlevels of giving mass that is 1 g, 5g, 10g, and a control without KMn, with ranges of banana's weight was 400g.The result of the research showing that KMnasan oxidizingethylenebythe carrierfroma mixture of clayandricehusk ashin the storage ofbananas has positive influencein the process ofstorage. The most effective treatment is5 gram satseven days of shelf life and KMn which is placed beside the material is not effectively used because itcan not completely absorbethylene

Effects of Copper Wire Added Wick on the Performance of Waste Coooking Oil Stove

This study aimed to determine the effect of copper wires addition to the cloth wick on the performance of stove fueled by waste cooking oil. The study was divided into two stages. First, is to test the capillarity of wick at different copper wires addition by observing flame quality, capillary height, and flaming period. Second, is to design a stove based on the results obtained in the first stage and to test performance of the stove in boiling water. Parameters to be observed include boiling time, rate of fuel consumption, and thermal efficiency. The results showed that the addition of copper wires increase the wick\u27s capillarity characterized by increasing absorption of the used cooking oil. Wick with a composition of 20 % copper wires and 80 % cloth produced the best capillarity (7.5 cm height). Waste cooking oil stove was capable to boil 3 kg of water in 15 minutes with a fuel consumption rate of 0.1275 kg/hour. The stove has a thermal efficiency of 33,33 %

Pengaruh Getaran Terhadap Kerusakan Mekanis Tomat (Lycopersicum Esculentum Mill)

Mechanical damage that occurs in tomatoes only visible and probably most who do not know. Without realizingit experienced mechanical damage tomato fruit will make the tomatoes are not worth selling because the fruit isdamaged. This research aims to determine how much damage suffered mechanical damage tomatoes mechanicalvibrated at different times. Varieties of tomatoes used are tomato gondol at the age of 70-80 days of harvest. Inthis research, tomatoes put in a storage container as much as 3 squares and vibrated at different times. As manyas 20% of tomatoes which can not be used in the research because of a pest when planting and rub with a storagecontainer (pallet). The results showed that the tomatoes will suffer mechanical damage such as bruises, scars andwounds ruptured (perforated top). The length of time the magnitude of vibration could be the benchmark ofmechanical damage to the fruit. However, it must also show the hardness of tomatoes to be vibrated. Tomatoessuffered mechanical damage until the worst was bruised and perforated top so that the fruit is not worth selling.Mechanical damage which is obtained not only from research through visual or tangible, but found to be anumber. The highest value of weight loss is on T3L2 with a value of 2,07% by weight of the intensity valueshrinkage of 1,66%. Percentage of tomatoes are not worth selling at 6,79% due to the damage caused by theprovision of mechanical vibration, with wide intensity mechanical damage amounting to 3,08%

Development of Biodegradable Board using Water Hyacinth (Eichornia crassipes)

The aim of this study was to utilized aquatic weed to become a bio-board with proper mechanical properties. Water hyacinth (Eichornia crassipes) is aquatic weed with rapid growing rate that usually clog the irrigation facility and cover the river surface cause negative impact to environment usually water environment. In this research water hyacinth was used to produced bio-boards through cutting, soaking, refining, molding, and drying process with applied of five different loading pressures (2MPa, 3.5MPa, 5MPa, 6.5MPa, 8MPa) in applied of 110 degree Celsius. In the producing process of bio-board hydrogen bond among the cellulose fiber were used instead of used chemical substance and additional additive. Bio-boards were successfully produced under experimental condition. Mechanical properties of each bio-board were investigated. Result of water hyacinth bio-board density was 1.1691 g/cm, average bending rupture stress 46.21 MPa and tensile rupture stress in average value was 6.64MPa. Bio-board with certain different strength range could be considered to be applied as packaging, seedling pot, mulching or insulating material in advance applicatio

Pengaruh Suhu Dan Waktu Reaksi Pada Pembuatan Biodiesel Dari Minyak Jelantah

This study aimed to utilize waste cooking oil as raw material for biodiesel production and to study the influence of time and temperature of the transesterification reaction on the biodiesel production and its characteristics. The study was conducted by base transesterification with NaOH at a molar ratio of waste cooking oil to methanol 1:6. A combination of three levels of temperature (45⁰C, 55⁰C and 65⁰C) and three levels of reaction time (5 minutes, 10 minutes, and 30 minutes) was performed. Each treatment was conducted with 3 replications. The results showed that the yield of biodiesel was affected by temperature and reaction time. The optimum treatment combination was transesterification at temperature of 65⁰C and 30 minutes of reaction time, which produced 72,87 % methyl ester with a density of 0,85 g/ml, viscosity of 1,65 cSt and acid number of 0,07 %. Although the density and acid number of biodiesel produced met the biodiesel quality standards of Indonesia (SNI), it was not recommended to be used as fuel engine