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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 4, No 2 (2020)" : 5 Documents clear
AUTOMATIC WATERING SYSTEM BASED ATMEGA328 MICROCONTROLLER ON GREEN DELI HONEY GUAVA PLANTS Zul Azhar; Fathurrahman Fathurrahman; Zul Mahadi Nata
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 4, No 2 (2020)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitekfisitek.v4i2.8196

Abstract

The role of water is very important in the growth process of the green deli honey guava plant, because this plant absolutely requires regular and sufficient water especially during the dry season. One of the obstacles for guava farmers is the problem of watering. Where honey guava has a moisture percentage ranging from 60% to 80% which must be maintained so that the quality of honey guava fruit is better. From these problems, an automatic watering device is designed based on soil moisture. Where this tool can also be monitored via android, LCD, and computer (PC) to make it easier for farmers to monitor. This study aims to determine the effect of soil moisture and assist farmers in controlling soil moisture in the cultivation of deli honey guava. The benefit of this research is to help farmers in an accurate and measurable process of watering plants. This research was conducted in Mancang Village, Binjai City. In this study, 2 honey guava trees were used to be tested using an automatic plant watering tool. One guava tree uses the manual method and the other is controlled using an automatic sprinkler. In this process the data is retrieved via a computer via USB with the PLX-DAQ software. The results showed that the soil moisture of the honey guava tree which was controlled using automatic sprinklers was more stable in maintaining soil moisture of 60% to 80% compared to the honey guava tree which was watered manually because the percentage of soil moisture did not match the plant's needs. Thus, the watering process using this tool is more controlled and measured in maintaining soil moisture in accordance with the needs of the green deli honey guava plant.
APPLICATION OF AUTOMATION PLANTING SYSTEM AT GREEN HOUSE IN IMPROVING PLANT QUALITY Rahmi Balqis; Abdullah Abdullah
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 4, No 2 (2020)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitekfisitek.v4i2.9765

Abstract

Research has been done to application of automation planting system at green house in improving plant quality which aims to help facilitate the work of farmers and get maximum crop yields. In this case Green House is simulated using acrylic boards with an area of 80 cm × 50 cm × 50 cm. The component used to detect temperature and humidity is the DHT 11 sensor. The air temperature and humidity control system is carried out by fans and incandescent lamps. Then for watering plants based on the time read in real time used Real Time Clock DS1307, and for soil moisture sensor used sensor YL-69 where soil moisture on the sensor is 0-100%. All data will be displayed on the LCD display 2 × 16. System testing is conducted by observing the system function in some time conducted from 05.00 am to end at 17.30 pm. At 07.05 and at 17.02, the watering of plants will be done in all directions. If the DHT 11 sensor detect a temperature above 32°C, the microcontroller activates the ventilation and peltier fans to neutralize the temperature inside the green house. Whereas if the temperature is detected below 27°C and above 26°C then lamp 1 will turn on and if the temperature is below or equal to 26°C then lights 1 and 2 will be activated until the temperature returns to normal which is between 27°C - 32°C.  Last testing, if the sensor reads soil moisture below 60% then watering of plants will be done to the detected dry soil.
Analysis Of The Mechanical Properties Of Brick With The Addition Of Cotton Ety Jumiati; Nita Zahara Nasution; Abdul halim Daulay
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 4, No 2 (2020)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitekfisitek.v4i2.9886

Abstract

AbstractIt has been done making bricks with the addition of cotton.Variations in the mixture of cement, sand and cotton are sample A (30%:70% :0%), sample B (30%:69,5%:0,5%), sample C (30%:69%:1%), sample D (30%:68,5%:1,5%), Water Cement Factor of 0,5 and dry time one day. Characteristic of the tests carried out include: compressive strength and fracture strength.Analysis of the mechanical properties of the bricks produced in sample A with a compressive strength value = 28.81 kg/cm2 and fracture strength value = 23.11kg/cm2, sample B with acompressive strength value = 26.85 kg/cm2 and fracture strength value = 22.32 kg/cm2, sample C with a compressive strength value = 25.10 kg/cm2 and fracture strength value = 15.09 kg/cm2, sample D with a compressive strength of 17.14 kg/ cm2 and a fracture strength value 15.51kg/cm2. The bricks produced namely in sample B.Keywords :Bricks, Cotton, and Cement
RELATIONSHIP BETWEEN VOLTAGE AND STRONG ELECTRIC CURRENT ON 1.5 VOLT BATTERIES WITH ADDING CASSAVA LEAVES ety jumiati; abdul halim daulay; asnitha aritonang
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 4, No 2 (2020)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitekfisitek.v4i2.9691

Abstract

Biobattery research has been carried out using cassava leaves (Manihot Utilissima) as a substitute for carbon in some 1.5 volt batteries. And tested the voltage with the results of sample A: 1.53 volts; B: 1.54 volts; C: 1.55 volts; and D: 1.58 volts. Then the electric current was also tested with the values obtained in sample A: 0.08 mA; B: 0.10 mA; C: 0.13 mA; and D: 0.19 mA. If the carbon mass in the biobattery gets higher, the value of the voltage and electric current test results changes with the higher in each sample. By performing the performance on the cassava leaf biobattery, it is able to turn on a 2.5 watt LED lamp with 3 batteries. Keywords: Current, cassava leaves, and voltage
WENNER'S CONFIGURATION GEOELECTRIC METHOD FOR THE INTERPRETATION OF THE SUBSURFACE STRUCTURES OF PANUNGKIRAN VILLAGE Aulia Farihanum; Nazaruddin Nasution; Abdul Halim Daulay
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 4, No 2 (2020)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitekfisitek.v4i2.9616

Abstract

A research has been carried out which aims to determine the subsurface structure using the geoelectric method in Panungkiran Village, Kab.  Deli Serdang, Prov.  North Sumatra Geoelectric data retrieval uses the Wenner configuration to determine the distribution and depth of subsurface structures in Panungkiran Village, Deli Serdang Regency.  Prov.  North Sumatra Data collection is 1 track with a length of 90 meters, Data processing in the study using MS office software Excel Notepad, and RES2DINV The results of the measurements consist of several types which are distinguished based on the range of resistivity values, namely in the range of 34.0-3188 2m interpreted by lithological layers  topsoil (34.0-65.1 Ωm), sandstone (65.1-1252 Ωm) weathered travertine limestone (125-456 Ωm), fresh trvertine limestone (456-3188 Ωm), and resistivity >3188  Qm is interpreted as a cave at a depth of 9-12 meters.

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