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All Journal International Journal of Renewable Energy Development Jurnal Ilmu Dasar POSITRON BERKALA SAINSTEK Rekayasa: Jurnal Penerapan Teknologi dan Pembelajaran Jurnal Fisika FLUX Viva Medika: Jurnal Kesehatan, Kebidanan dan Keperawatan Jurnal Teknik Elektro dan Komputasi (ELKOM) Computational and Experimental Research in Materials and Renewable Energy (CERiMRE) Journal of Mestika Nusantara Satu Community Services
Misto Misto
Balai Penelitian Kehutanan Makassar Jl. Perintis Kemerdekaan Km.16 Makassar, Sulawesi Selatan, Kode Pos 90243 Telp. (0411) 554049, Fax. (0411) 554058
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Health Professions Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health

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Termometer dengan Keluaran Suara Berbasis Mikrokontroler ATmega8535 untuk Mengukur Suhu Ruang Misto, Misto
Jurnal Fisika FLUX Vol 6, No 1 (2009): Jurnal Fisika Flux Edisi Februari 2009
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v6i1.3051

Abstract

A thermometer with sound output has been developed. The systemconsists of a temperature sensor, a microcontroller, a voice device, and aspeaker. The temperature sensor of DS18S20 will convert the temperature todigital data. The is feed to ATmega8535 microcontroller. On the otherhand, intwelve memory of voice deviceISD2590 is recorded some numerical sound signalfrom zero to nine and word of temperature unit. For reproducing the sound signalthe data from microcontroller will switch on the memory according to it’stemperature quantity. The sound electronic signal is linked to the speaker toproduce sound. The temperature is designed to operate from 24 to 350C.
Sistem Pengukur Suhu Simultan untuk Aplikasi Pemantauan Suhu Tubuh Pasien di Rumah Sakit Sutisna, Sutisna; Misto, Misto; Hardianto, Hardianto
Jurnal Fisika FLUX Vol 7, No 1 (2010): Jurnal Fisika Flux Edisi Februari 2010
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v7i1.3071

Abstract

An electronic monitoring system has been created for monitoringpatients condition simultaneously. The temperature was converted to the voltageby a temperature sensor consisting of an NTC (negative temperature coefficient)thermistor and the additional circuit that its output voltage change following thechange of thermistor resistance. The number of temperature sensor circuit isused as much as ten. The coverage of temperature measurements were in therange 35oC to 41oC. The main control system was done by Labjack UE9 workingbased program that created in LabVIEW 8.0 software. The result showed that thesystem works well, seen from the accuracy value reached more than 99%(discrepancy (D) less than 0.6%) and precision levels obtained from three timesretrieval of data also amounts to more than 99% (relative uncertainty (I) less than0.6%).
Kompas Magnetik Digital dengan Keluaran Suara Berbasis Mikrokontroler AT89S51 Rusgianto, Rusgianto; Misto, Misto
Jurnal Fisika FLUX Vol 8, No 2 (2011): Jurnal Fisika Flux Edisi Agustus 2011
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v8i2.3114

Abstract

An electronic compass system with sound output have been done. Thesystem was employed HM55B Compass Module Sensor, Microcontroller AT89S51,Operational Amplifier, and IC Voice ISD 2590.The operation of the system wascontroller by the microcontroller. The signal from the compass sensor is feed toATmega8535 microcontroller. On the otherhand, in twelve memory of voicedeviceISD2590 is recorded some word sound signal from the north to the north west.For reproducing the sound signal the data from microcontroller will switch on thememory according to it’s compass toward. The sound electronic signal is linked to thespeaker to produce sound. It was concluded that the system work well since the allparameter were displayed on the monitor simultaneously.
SISTEM PEMBERI PAKAN IKAN SECARA OTOMATIS BERBASIS MIKROKONTROLER ATMega8535 Setyawan, Herry; Misto, Misto; Gumay, Rofy Fazra
Jurnal Fisika FLUX Vol 10, No 1 (2013): Jurnal Fisika FLUX Edisi Februari 2013
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v10i1.2635

Abstract

Abstract: An electronic system based on Atmega8535 microcontroller for food fishfeding has been done. The system was employed a RTC, a pair infrared LED andphotodiode sensor, DC motor, driver circuit, a microcontroller, and LCD display. Themicrocontroller was programmed with C language and AVR program that suitable forthe device. The system was supported by a RTC device to get the main time basesignal of the system time. All of the system was controlled by microcontroller. Thesignal from the microcontroller is send to LCD and fish food applicator. It was concludedthat the system work well well since the all parameter and action were displayed onmonitor simultaneously and the applicator.Keyword: ATMega8535, RTC, infrared LED and photodiode sensor, DC motor,applicator
Bioelectricity Generation From Single-Chamber Microbial Fuel Cells With Various Local Soil Media and Green Bean Sprouts as Nutrient Mulyono, Tri; Misto, Misto; Busroni, Busroni; Siswanto, Siswanto
International Journal of Renewable Energy Development Vol 9, No 3 (2020): October 2020
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2020.30145

Abstract

In this experiment, seven single-chamber microbial fuel cells (MFCs) were made and filled with various types of local agricultural soil and sediments found in irrigation channels, which were mixed with glucose and green bean sprouts mashed as nutrients for microbial survival. MFC electric power was measured every day for 35 days. Every time low electric power indicated weak microbial activity, green bean sprouts were added. The highest electric power of 118 µW (23.4 mW/m2) was observed in fuel cells filled with agricultural land planted with rice. Power density reached the range of 120–140 mW/m2, whereas the incubation time showed a maximum of 35 days. This study found that adding green bean sprouts can increase the length of the MFC cycle and strengthen the generated power up to 122 mW. 
Thermoelectric Generator Module as An Alternative Source Of Electrical Energy in Rural Areas Arkundato, Artoto; Jatisukamto, Gaguk; Misto, Misto; Maulina, Wenny; Syah, Khalif Ardian
Rekayasa : Jurnal Penerapan Teknologi dan Pembelajaran Vol 18, No 1 (2020): July
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/rekayasa.v18i1.23691

Abstract

It has been done  a research to design a heat-to-electric converter as an alternative electrical energy source based on the thermoelectric generator devices that can convert the heat into the DC electricity. This research aims to determine the optimal operating temperature range to produce the thermoelectric generator’s output voltage as the desired conversion module. The developed conversion module uses the Seebeck effect by applying four thermoelectric generators arranged in an electrical circuit series. The electric current in thermoelectric generator occurs under the Seebeck effect due to the temperature difference between the two metal chips in the thermoelectric generator module. Candles were used as a heat source of thermoelectric generator module, while water is used for cooling. The results showed that the application of thermoelectric generator technology had produced an electrical voltage of about 5 volts. The thermoelectric generator’s operating temperature around 100 ºC, and the temperature of the water cooling medium was maintained at around 30 ºC so that there is a correlation with a temperature difference of about 70 ºC between the two sides of the thermoelectric generator chips. The electrical voltage that occurs could be used as a source of electrical energy for any purposes.
Thermoelectric Generator Module as An Alternative Source Of Electrical Energy in Rural Areas Arkundato, Artoto; Jatisukamto, Gaguk; Misto, Misto; Maulina, Wenny; Syah, Khalif Ardian
Rekayasa : Jurnal Penerapan Teknologi dan Pembelajaran Vol 18, No 1 (2020): July
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/rekayasa.v18i1.23691

Abstract

It has been done  a research to design a heat-to-electric converter as an alternative electrical energy source based on the thermoelectric generator devices that can convert the heat into the DC electricity. This research aims to determine the optimal operating temperature range to produce the thermoelectric generator’s output voltage as the desired conversion module. The developed conversion module uses the Seebeck effect by applying four thermoelectric generators arranged in an electrical circuit series. The electric current in thermoelectric generator occurs under the Seebeck effect due to the temperature difference between the two metal chips in the thermoelectric generator module. Candles were used as a heat source of thermoelectric generator module, while water is used for cooling. The results showed that the application of thermoelectric generator technology had produced an electrical voltage of about 5 volts. The thermoelectric generator’s operating temperature around 100 ºC, and the temperature of the water cooling medium was maintained at around 30 ºC so that there is a correlation with a temperature difference of about 70 ºC between the two sides of the thermoelectric generator chips. The electrical voltage that occurs could be used as a source of electrical energy for any purposes.
One Step Synthesis of TiO2-Activated Carbon Composite Using Hydrothermal Method with Mass Variation of Activated Carbon Sutisna, Sutisna; Rokhmawati, Ilma Eka Nur; Misto, Misto; Rofi’i, Imam; Mulyono, Tri; Siswanto, Siswanto; Supriyanto, Edy; Wibowo, Edy
POSITRON Vol 13, No 1 (2023): Vol. 13 No. 1 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/positron.v13i1.59856

Abstract

One effort to increase the photocatalytic activity of TiO2 is to immobilize it on the surface of the sorbent material. This study aims to produce TiO2-Activated Carbon (TiO2-AC) composites which have higher photocatalytic activity than TiO2, using a simple method. The synthesis of TiO2-AC  composites was carried out using the hydrothermal method. The synthesis process was initiated by mixing TTIP, ethanol, H2O, and activated carbon with various masses (5 g, 10 g, 15 g, and 20 g). The mixture was then put into a hydrothermal autoclave and heated at 180°C for 12 hours. The material is then washed until the pH is neutral, and then dried. The TiO2-AC composite powder was then calcined at 500°C for 3 hours. Based on the photocatalytic test of the TiO2-AC composite on the degradation of methylene blue compounds, it was shown that composite with a mass variation of 10 g activated carbon (TiO2-AC/10) had the highest photocatalytic activity. FTIR characterization of the sample TiO2-AC/10 showed a shift in the peak wave number of the hydroxyl and carbon groups. Meanwhile, the results of morphological analysis using SEM showed that TiO2 particles had adhered to the AC surface, which was also confirmed by EDX data in the presence of Ti and O elements in the synthesized material. The results of the crystallinity analysis showed that the 100% synthesized TiO2 was the anatase phase with a crystalline size of 1.80−14.14 nm. This study open up opportunities for the development of TiO2-based composite materials for large-scale environmental remediation applications.
Effect of Temperature on The Electron Concentration of Crystalline GaAs Semiconductor Based on The p-n Junction Due to Deformation Potential Scattering Alviati, Nova; Hoiriyah, Samsiatun; Misto, Misto; Supriyanto, Edy
Computational And Experimental Research In Materials And Renewable Energy Vol 2 No 1 (2019): May
Publisher : Physics Department, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/cerimre.v2i1.20560

Abstract

The electrical characteristics of semiconductor materials can be predicted based on the transport of charge carriers within the material. Under room temperature, the electrical properties of semiconductor materials can be exploited by knowing the value of their electron mobility to predict the number of electrons that experience the transport mechanism. When the material is observed under room temperature, the interaction of electrons and the lattice atoms' vibrations result in deformation potential scattering. This can stimulate electron mobility changes, which can affect the number of free electrons in semiconductor materials. The research results presented in this paper simulate the number of electrons that change due to electrons' mobility in the GaAs crystal. This material undergoes potential scattering deformation due to the interaction between electrons and phonons at temperature (40-100) K. The simulation is carried out by modeling the GaAs semiconductor material in the form of a p-n junction. The temperature variation given to the material shows a significant change in concentration in the junction area. In contrast, in the contact area's vicinity with the external circuit, both the p-layer and the n-layer show relatively constant electron concentrations.
Study of J-V Characteristics of Microcrystalline Silicon Solar Cell on The Structure of P-I-N Homojunction Dewi, Yuningtyas Nely Kusuma; Purwandari, Endhah; Anwar, Khoirul; Misto, Misto
Computational And Experimental Research In Materials And Renewable Energy Vol 3 No 1 (2020): May
Publisher : Physics Department, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/cerimre.v3i1.26416

Abstract

Microcrystalline silicon (μc-Si) is a silicon semiconductor material with a crystalline structure in the amorphous phase. Here, the transport phenomenon in this phase has been modeled to produce charge carrier distribution profile and current density-voltage characteristics. The calculations were obtained by solving Poisson and Continuity equations on crystal and amorphous materials which are modeled in one-dimensional p-i-n homojunction, using finite element method. The simulation results of the charge carrier distribution profile show that the highest electron concentration in the n-layer of 1018 cm-1, and the highest hole concentration in the p-layer of 1018 cm-1. The result current density-voltage (J-V) characteristics curve show that the open circuitt voltage of 0,6 volts and short-circuit current density of 26.4 mA/cm. The energy conversion efficiency of 9.02% with a fill factor of 0.569.
Co-Authors A.A. Ketut Agung Cahyawan W Ahmad, Mutiara Garnet Alviati, Nova Arsyad, Usman Artoto Arkundato Busroni, Busroni Cahyono, Bowo Eko Chatarina Umbul Wahyuni Dewi, Yuningtyas Nely Kusuma Edi Supriyanto, Edi Edy Supriyanto Edy Wibowo Endhah Purwandari Fachry Abda El Rahman Gaguk Jatisukamto Gumay, Rofy Fazra Haerani, Nurul Hoiriyah, Samsiatun Indri Heri Susanti, Indri Heri Islamintari, Wulan Khoirul Anwar Makkasau, Ahmad Rifqi Moh. Hasan Molo, Hasanuddin Mutmainnah Mutmainnah Rafrin, Syaifullah Ramadhany, Feryna Rofi’i, Imam Rokhmawati, Ilma Eka Nur Rusgianto, Rusgianto S Siswanto Sari, Silfiana Puspita Setyawan, Herry Supriyadi Supriyadi Sutisna Sutisna Syah, Khalif Ardian Tri Mulyono Tri Sumarni Wafi, Moh. Abduh Wahyullah, Wahyullah wahyuni wahyuni Wenny Maulina, Wenny Y.A, Muhtarom Yuniarsih, Rahayu Setyo