Based on the analysis of worksheet, it was found that the worksheets that students use less attractive, image colorless and less clear. worksheet rare teachers develop itself in accordance with the conditions and circumstances in the face it let alone implement a character value therein. This research aims to develop character-based worksheet in science subjects are fit for use as a learning to…
A research about prediction of unconfined aquifer in Distrcit Bukit Raya have been done by using finite difference method. The depth of unconfined aquifer data using contour grid District Bukit Raya in 2015 solved numerically by using computer program MATLAB application R2009a version. The aim of this research was to analyze the effect of population growth on the volume of unconfined aquifer in…
Fluorescence imaging has been developed and used as a potential nondestructive method for fruit and vegetable quality assessments. Grading oil palm fresh fruit bunches (FFBs) is a very important step to obtain good quality of crude oil palm for oil palm companies. Fluorescence imaging has not thoroughly been explored for FFB grading. This research was aimed to study the fluorescence intensities…
Aluminum doped ZnO nanorods with various percentage concentrations of Al 0%, 0.5%, 1%, 1.5%, and 2% have been successfully grown on FTO using hydrothermal method at a temperature of 90° C for 8 hours. The FESEM images showed that the geometrical shape of all the sampels was nanorods with hexagonal face shape. The Al 1% doped sample produced the highest density, thickness and uniformity of ZnO …
Global ionospheric scintillation model for low latitude in Indonesiausing observed data of Ionospheric Scintillation Monitoring (ISM) has been validized. The data were collected at ISM Kototabang, West Sumatra, Indonesia. In this research, the data used were based on Global Ionospheric Scintillation Model (GISM) as well as ISM from 2008 until 2012 for equinox months such as March, April, Septem…
This paper continues some results from equatorial GPS ionospheric scintillation observations that have been conducted at Kototabang, West Sumatera Indonesia. The previous research has shown that the maximum ionospheric scintillation occured in equinox months which are in March to April and September to October. To get the morphological appearances of ionospheric scintillation, the analysis that…
The measurement of the magnetic degree and magnetic susceptibility of iron sand deposited along Padang beach West Sumatra has been done. The amount of sample of each location was 10 Kg. The sample was completely dried under sun ray before being processed by iron sand separator. The value of total magnetic induction was measured using a magnetic sensor called Pasco magnetic probe PS-2162. Prior …
Production of carbon electrode supercapacitor made from coconut shell carbon has been demonstrated used spraying method. The Increment of porosity parametry was developed by KOH activation variations of KTK 1 sample, KTK 2, and KTK 3. Measurement physical nature of carbon powder used N2 gas absorption method is to measure specific surface area, scanning electron microscopy to saw morphology str…
This study simulates the heat distribution in the conductor plate for micro energy generation based on module Thermoelectric Generator (TEG) type 40-40-10 / 100 to optimize the absorption of the vehicle exhaust waste heat. The module has a maximum operating temperature of 423K. The modeling is done using MATLAB with a modified diffusion equation by temperature application of 900K as boundary co…
The research have been done to know about The Rain Water absorption in the absorption wells Rumbai Subdistrict of Pekanbaru. Absorption volume gained form two dimention geoelectric data using schlumberger electrode konfiguration with 164 meter offset. Geoelectric data processing using Res2dinv software resulted resistivity of lithology. Based on resistivity value can be known permeability soil …
A research has been done on the determination of water electrical conductivity and heavy metal concentration (Pb and Fe) of Batang Lubuh River at Surau Tinggi Village in location factory waste disposal area using method of experiment. Process was begun by taking samples of Batang Lubuh River on seven spot before and after factory waste disposal. Using multitester instrument can be determined re…
The dryer cabinet types has succesfully been modified to determine the mass, moisture content, density, and efficiency of drying time for young and old betel nut using biomass energy coconut shell. Drying was done by means of a dryer cabinet -type with a length of 130 cm, width 90 cm and height 120 cm. The drying chamber was formed in such a way that was equipped with a chimney, two levels of d…
The issue of availability of clean water for domestic use in a problem that was always experienced in each region, one of them in the district of Bukit Raya Pekanbaru that progressing development that causing changes in the function of green open land into residensial land. The purpose of this study was to analysis of the distribution of the soil water infiltration rate in the district of Bukit…
Research has been conducted on the foam material using the method of measurement in a confined space to determine the value of sound reduction produced by the speakers at a particular frequency. Specification foam material has a density of consecutive 0,003, , danand has a volume of 20 cm x 20 cm x 1.7 cm. Each sample was measured at a distance of 30 cm, 50 cm and 70 cm from the speaker. The me…
The effects of physical activation temperature on the physical activation to the physical and electrochemical properties of Electrodes Carbon Paper (ECP) from banana peels waste has been analyzed. The physical characteristic such as density, surface area and the crystals parameters has been analyzed, while the electrochemical properties was subjected on specific capacitance values. The producti…
Fluorescence Imaging has been developed as a nondestructive method for assessing fruit and vegetable qualities and attributes. There are many attributes can be accessed using a laser based fluorescence imaging such as chlorophyll content and other pigments responsible for fruit colors and ripeness. The assessment of these attributed depends on the wavelength of excitation lasers used. This rese…
Activated carbon were prepared from shell of Terminalia cattapa. The shell of Terminalia cattapa were carbonized by conventional carbonization for 3 hours. The ratio of mass percentase of carbon granular : KOH is 2 : 1. The mixtures of carbon granular and KOH were soaked in 200 mL boilong water for 12 hours, 24 hours and 36 hours. Respectivaly and subseguent by irradiated with output power of 6…
Research on the use of activated carbon from oil palm empty fruit bunches (EFB) to absorp heavy metals Fe in wastewater streams with combination activation and carbonization experimen method have been done. Activated carbon was made in the form of pellets. Sample preparation consisted of drying, pre-carbonization, refining, chemical activation using KOH 0.3 M and procesed. All pellet samples we…
Elektroda superkapasitor dari tempurung kelapa telah dibuat menggunakan metode eksperimen dengan variasi aktivator: (A) ZnCl2, (B)KOH, (C) karbon ZnCl2 + KOH (s) (D) karbon KOH + ZnCl2 (s). Luas permukaan karbon tempurung kelapa diuji menggunakan metode serapan gas N2 untuk sampel A, B, C dan D adalah 4,964 m2/g, 7,958 m2/g, 2,746 m2/g dan 11,103 m2/g. Kapasitansi spesifik ditentukan denga…
The problem in this research was the lack of explosive power leg muscle in the athletes smash and block when doing smash and block, it was still not optimal or still low. This was evident when they exercised and competed, their smashed were in netted and out, moreover the blocks were not able to reach the ball, so the team got an attack from opponent team very easy. This research was conducted …