Palm kernel shell, which is an agricultural by product, was chosen as a precursor for the production of high surface area activated carbon (AC). Previous studies has shown that palm kernel shell of activated carbon ha...
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Palm kernel shell, which is an agricultural by product, was chosen as a precursor for the production of high surface area activated carbon (AC). Previous studies has shown that palm kernel shell of activated carbon have a high fixed carbon, low ash content and the presence of inherent porous structure. This preparation consists of chemical activation using chemical agents, KOH and ZnCl2. The effects of each chemical agent to the formation of activated carbon were investigated. The prepared activated carbons were then studied using Nitrogen gas Adsorption Analysis, Field Emission Scanning Electron Microscope (FESEM) and Electron Spin Resonance (ESR) spectroscopy. This research was successfully produced activated carbon with high surface area of 1100 m2/g and low micropore area, 1.98 nm. The electrical properties of the prepared sample (AC) were measured using ESR method. Based on ESR study, a singlet peaks g-value at 1.9987 were observed throughout the 90 minutes of UV irradiation.
Introduction:Once the enormity of online games took over the attention of many teens and children so that it brought a big *** behavior among adolescents especially high school students from year to year is increasing...
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Introduction:Once the enormity of online games took over the attention of many teens and children so that it brought a big *** behavior among adolescents especially high school students from year to year is increasing both in number and forms of aggressive behavior that is ***:This study aims to determine the relationship between playing online games and aggressive behavior of high school students in ***:The research method used was analytical research using cross sectional *** the relationship between two variables in a situation or group of objects using a simple linear regression statistical ***:The correlation effect of Length Playing Game Online with aggressively behavior of students in High School logistic test results obtained meaningful results where the value of p=0,00<*** means that there is an influence or relationship between the lengths of playing online games with the aggressive behavior of high school *** results indicate that there is a positive relationship between the lengths of playing online games with the aggressive behavior of *** means that the old variable playing online games can be used as a trigger to predict the emergence of aggressive teenage *** higher the length of playing online games,the higher the aggressive behavior of teenagers,conversely the lower the longer playing online games,the lower the aggressive behavior of teenagers.
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