Jurnal Natural
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CHECKLIST OF TERMITE (ISOPTERA) RECORDED FROM BUKIT LAWANG, NORTH SUMATRA
No full textA survey was conducted to explore species richness of termite at Bukit Lawang (North Sumatra) in 2012. Termites were sampled by adopting a standardized smpling protocol (Belt Transects) at different altitudes (150m, 250m, 350m). As many as 30 species and three families (Kolotermitidae, Termitidae) were collected. None of the species under Kalotermitidae collected from the field were probably related to the limited area surveyed and nesting behaviour (which generally inhabitant into dead branches and twigs
ANALYSIS OUTPUT TOLERANCE LIMITS X-RAY MACHINE DIAGNOSTIC (Case Study in one of the General Hospital inBanda Aceh)
Full text linkCurrently, several regional general hospitals in Banda Aceh now have excellent support facilities, one of which is a diagnostic X-ray machine. The performance of diagnostic X-ray machine should be checked to determine if the dose received does not harm a patient and produce a good image and provide diagnostic information in a timely and accurate, therefore there are necessary for quality control activities on the machine X-ray. Factors that affect the dosing and imaging results, among others, the amount of the provision of current and voltage. From the research shows that the value of the output voltage generated is not much different from the value of the input voltage with a percentage value below 5%. This value shows a good output machineX-ray because it is still under the maximum tolerance limit of 10%. So the overall results of observations on the machineX-ray is in hospital, the quality control measurements gave values still within safe limits. Then by giving a higher input voltage turns also affect the amount of energy produced, thus affecting also absorbed dose X-rays are produced
THE SUBSURFACE RESISTIVITY STUDIES IN GAMPONG JAWA WASTE DISPOSAL BANDA ACEH
Full text linkThe research has been carried out about determining the subsurface resistivity values by using the VLF method in waste disposal (TPA) Gampong Jawa Banda Aceh. Measurement target is for investigate allegations of contaminant substances are disposed by the public at these locations based on the response of the magnetic and electric fields. The tools used are the T-VLF device with two electrodes and using three stations, namely the transmitter JJF4 Japan, NWC Australia and UMS Moscow. Broad expanse of measurements on L1 and L2 is 200 m, L3 and L4 is 150 m. There are 74 measuring points with spacing of 10 m. The result of this experiment showed that the four layers can be divided into two layers with different resistivity values. The first layer at a depth of 0-15 m with apparent resistivity of 2-25 m, allegedly at this layer contained the contaminant substances. The second layer at a depth of 15 m with apparent resistivity of 25-101 m, in this layer are water-resistant coating that can withstand water into and out of the landfill
