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Fisitek : Jurnal Ilmu Fisika dan Teknologi
Published by Universitas Islam Negeri Sumatera Utara
ISSN : 25806661     EISSN : 2580989X     DOI : -
Core Subject : Science, Education,
Computer Science & IT Education Physics
FISITEK: Jurnal Ilmu Fisika dan Teknologi is a peer-reviewed journal which covers all aspects of theoretical and practical research of physics and their use. FISITEK is published by Physics Department of Science and Technology Faculty, State Islamic University of Sumatera Utara Medan (Universitas Islam Negeri Sumatera Utara Medan), Indonesia. FISITEK appears twice a year, in February and August. FISITEK is available in electronic and print editions.
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 3, No 1 (2019)" : 5 Documents clear
ANALYSIS STUDY THROUGH MATHEMATICA 5.1 SIMULATION PROGRAM IN DETERMINING THE DENSITY AND POROSITY OF CORDIERITE CERAMICS Juliandi Siregar; M Gade; Khairiah Khairiah; Shinta Marito Siregar
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 3, No 1 (2019)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitek.v3i1.5510

Abstract

The research conducted was an experiment with a computational simulation design using the Wolfram Mathematica 5.1 program to view and analyze physical characteristics (density and porosity) of Cordierite Ceramics. The involvement of advanced computers in research will connect the theories and experiments that have been accepted as one of the methods of material research and development. The research variables in this simulation are sintering temperatures of 1200, 1250, 1300, and 1350 °C mixed with wood powder by 20% by weight. The parameters of this study are density and porosity. The simulation results show that with a composition of 20% wood powder and sintering temperature of 1300 °C the density values of 0.97 g/cm3 and porosity of 60.11% are the best conditions that are close to the literature. By comparing the results of simulations and experiments, it can be concluded that through simulation analysis of density and porosity, constant changes can be obtained due to a constant increase in sintering temperature and it can also be analyzed with a smaller temperature increase interval.Keywords: Cordierite Ceramics, Density, Porosity, and Wolfram Mathematica.
MONITORING AND DETECTION SYSTEM OF NUTRITION FLUID CONCENTRATION AND TEMPERATURE CONDITION AT HYDROPONIC PLANTING PROCESS Abdullah Abdullah
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 3, No 1 (2019)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (607.07 KB) | DOI: 10.30821/fisitek.v3i1.5511

Abstract

Monitoring and detection system of nutrition fluid concentration and temperature condition is very needed to process hydroponic planting, nutrition fluid concentration and temperature is important variable to determine result plant of hydroponic. The value of nutrition fluid concentration and temperature which is not appropriate can be sure of crop failure. The system can detect and monitor nutrition fluid concentration and temperature at the plant. So that if two variables is not in the right condition, there will be a notification in the form of an alarm and warning to be displayed to LCD, so that the problem of the condition of faulty nutrition and the need for improper temperatures can be overcome. The research used Temperature sensor DHT11 who can sense temperature object where the output is an analog output that must be converted into digital data so that it can be processed by the microcontroller, TDR sensor (Total Dissolve Solid) which can know nutrition fluid concentration while the TDS value high so the fluid is turbid, vice versa. The function of microcontroller Atmega328 as a centre processing for all data (input/output) and equipped with 4 x 20 cm2 LCD display output. So the information of the result measurements and other information can be seen clearly on the LCD display.  The result of the analysis proved that sistem had inregrated successfully and reach target who expectation is the sistem can used to monitor and detect sistem of nutrition fluid concentration and temperature condition at hydroponic planting process.Keywords: concentration, fluid,  hydroponic, nutrition,  and temperature.
THE USE OF PALM OIL TRUNK POWDER AS FILLERS IN THE MAKING OF GYPSUM CEILING SHEETS WITH POLYURETHANE BINDER Rahmadhani Banurea; Mulkan Iskandar Nasution
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 3, No 1 (2019)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitek.v3i1.5512

Abstract

A study has been conducted on the effect of palm oil trunk powder as fillers in the making of gypsum ceiling sheets for physical, mechanical, and DTA properties. The type of adhesive used is a polyurethane binder. Palm oil trunk powder is varied in 5, 10, 15, 20, and 25 g. The results showed that the physical properties (density of 1.6 g/cm3 and water absorbency of 15.08%) in the composition of 5 grams of palm oil trunk powder were the best results. The higher the powder level the higher the density value but the lower the water absorbency. The results of the physical properties test still meet the standards of SNI 03-2105 1996 and are still above the physical properties of the Jaya Board gypsum ceiling. The results of mechanical test (impact test 2.0 x 10-4 J/mm2, tensile test 305.8 kPa, flexural strength test/MOE 7233.8 kg/cm2, and fracture strength test/MOR 13.44 MPa) were the best results and at composition of 25:25:15. This composition is the most homogeneous composition so that its mechanical properties are optimum. Keywords: ceiling sheets, palm oil trunk powder, and polyurethane.
ANALYSIS OF GRAPHITE CARBON BLACK SLURRY DERIVED FROM DURIAN (DURIO ZIBETHINUS) SKIN AS A CANDIDATE FOR BIO-BATTERY ANODE MATERIAL Khairiah Khairiah; Jafri Haryadi
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 3, No 1 (2019)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitek.v3i1.5465

Abstract

In this study, activated carbon from durian skin will be used as a candidate for bio-battery anode material. The precipitation method is used with citric acid and ethanol as the precipitation medium. Durian skin is carbonated and sintered with furnace at temperature of 250 – 1250 °C until it turns into graphite carbon black slurry. Samples are characterized by measuring its absorbency, surface area, pore size, and electrical conductivity. The absorbency increases with increasing value of variables (absorption time, sintered temperature, pore size, surface area, and electrical conductivity). The highest absorbency is 780 mg/g is achieved at 1250 °C, pore radius of 200 nm, surface area of 540 m2/g, and electrical conductivity of 437 S/m.Keywords: absorbency, bio-battery, durian skin, graphite carbon black slurry, and pore size.
CLASSIFICATION OF MOUNT KELUD VOLCANO SEISMIC SIGNALS DURING ERUPTION IN NOVEMBER 2007 Lailatul husna lubis; Ratni Sirait; Miftahul Husnah; Ridwan Yususf Lubis
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 3, No 1 (2019)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitek.v3i1.5473

Abstract

Classification of mount Kelud volcano seismic signals can be divided into several types,  VT-A, VT-B, low frequency, multiphase, and tremor. The analysis by classifying the volcano seismic signal from eruption of Mount Kelud based on the shape of the signal. Data analyzed were starting on 16 to 27 October 2007. The results of volcano seismic signal which recording showed different shapes and were classified according to the type of signal. Each seismic signal recording is grouped according to its shape and the classification results are signaled into VT-A, VT-B, multiphase, low frequency, and tremor.Keywords: Kelud mountain, low frequency, multiphase, signal classification, tremor, VT-A, and VT-B.

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