Journal of Energy, Material, and Instrumentation Technology
Ruang lingkup penulisan dalam jurnal ini meliputi: 1. Fisika Teori Mekanika Klasik Elektromagnetik Termodinamika Mekanika Statistik Mekanika Kuantum Teori Relativitas Kuantum Gravitasi Astrofisika Kosmologi 2. Fisika Bumi (Geofisika) Geothermal Geolistrik Seismik Geomagnet 3. Fisika Material Nanomaterial Logam dan Korosi Material Magnetik Thin Film Fotokatalis/Katalis Semikonduktor Superkonduktor Keramik Polimer 4. Elektronika dan Instrumentasi Sensor Instrumentasi Biomedik Instrumentasi Pertanian Instrumentasi Lingkungan Biofisika Fisika Komputasi Laser 5. Fisika Nuklir Keselamatan Reaktor Analisis Neutronik Manajemen Bahan Bakar dan Limbah
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72 Documents
<![CDATA[DESAIN ALAT UKUR KADAR AIR DENGAN METODE KAPASITANSI UNTUK MENENTUKAN KATEGORI LAMA SIMPAN TEPUNG TAPIOKA ]]>
<![CDATA[Syarifuddin Aprian Hidayatullah]]>;
<![CDATA[Sri Wahyu Suciyati]]>;
<![CDATA[Gurum Ahmad Pauzi]]>;
<![CDATA[Arif Surtono]]>
<![CDATA[ Journal of Energy, Material, and Instrumentation Technology Vol 3 No 2 (2022): Journal of Energy, Material, and Instrumentation Technology ]]>
Publisher : <![CDATA[Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung ]]>
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DOI: 10.23960/jemit.v3i2.100
<![CDATA[In this study, water content measurements were carried out using a physical method using a capacitive sensor. Measurement with these two methods aims to get the most efficient method for tapioca flour's water content value. The samples used were six samples of tapioca flour from the way good factory. Each sample was measured using a thermogravimetric method and a capacitive sensor measuring instrument three times per sample. The measurement results produce a polynomial graph with a coefficient of determination of 0.9702. The graph shows that the higher the water content, the higher the value detected by the capacitive sensor. The thermogravimetric method used as a reference takes 6 hours to get results, and the physical method takes less than one minute. To compare measurements, measurements were made using the thermogravimetric method to measure the percentage of water content in tapioca flour. This study indicates that the physical measurement method with a capacitive sensor instrument requires a shorter time than the thermogravimetric method. And the higher the water content, the shorter the storage time.]]>
<![CDATA[Rancang Bangun Sistem Pembatas Akses Pintu Masuk Laboratorium Menggunakan Teknologi Radio Frequency Identification (RFID) dan Keypad ]]>
<![CDATA[Ahmad Aziz Arrizal]]>;
<![CDATA[Sri Wahyu Suciyati]]>;
<![CDATA[Arif Surtono]]>;
<![CDATA[Gurum Ahmad Pauzi]]>
<![CDATA[ Journal of Energy, Material, and Instrumentation Technology Vol 3 No 2 (2022): Journal of Energy, Material, and Instrumentation Technology ]]>
Publisher : <![CDATA[Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung ]]>
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DOI: 10.23960/jemit.v3i2.101
<![CDATA[The laboratory access restriction system has been realized using RFID and keypad technology, based on an Arduino microcontroller as a processor. The system has recorded users who entered the room by identifying the RFID tag (transponder) used to open the door from the outside. As for access outside the room, the user only needs to enter the password as identification data on the keypad, and the system would reduce the number of room users and open the door. The output of this system was a solenoid lock which functions as an electronic lock and an LCD to display the status of the RFID reading. The test results showed that the system created can work well. RFID Reader was able to read tags with a maximum distance of 4 cm. The program counter functions well, so the number of users was limited to 15 (50% of the maximum capacity).]]>
<![CDATA[Efek NaOH pada Pembentukan Nano ZnO Metode Hidrotermal ]]>
<![CDATA[Rahma Fauza]]>;
<![CDATA[Posman Manurung]]>;
<![CDATA[Yanti Yulianti]]>
<![CDATA[ Journal of Energy, Material, and Instrumentation Technology Vol 2 No 3 (2021): Journal of Energy, Material, and Instrumentation Technology ]]>
Publisher : <![CDATA[Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung ]]>
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DOI: 10.23960/jemit.v2i3.146
<![CDATA[Hydrothermal methods have been developed for the manufacture of ZnO. This study aims to find out the effects of variation on the chemical composition and structure of nanoZnO, the nanoZnO phase formed and the nanoZnO particle size formed. The NaOH variation used is 1; 2; 3; and 4 grams. The characteristics used are X-Ray Diffactions (XRD) and Scanning Electron Microscopy (SEM). The XRD characterization results show that the diffraction peaks correspond to standard databases and show wurtzite phases with hexagon structures. The results of SEM characterization showed that the mean measurement of ZnO particles and the error value in the 1 gram variation was 67 ± 3 nm, while the 3 gram variation was 76 ± 6 nm.]]>
<![CDATA[Pengaruh Inhibitor Ekstrak Daun Inai (Lawsonia inermis L) Terhadap Laju Korosi Baja St37 dalam Larutan HCl 3% ]]>
<![CDATA[Oricha Mutia Rani]]>;
<![CDATA[Ediman Ginting Suka]]>;
<![CDATA[Yanti Yulianti]]>
<![CDATA[ Journal of Energy, Material, and Instrumentation Technology Vol 2 No 3 (2021): Journal of Energy, Material, and Instrumentation Technology ]]>
Publisher : <![CDATA[Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung ]]>
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DOI: 10.23960/jemit.v2i3.147
<![CDATA[Henna leaves extract (Lawsonia inermis L) is used as a corrosion inhibitor in St37 steel soaked in 3% HCl corrosive medium. To find out the effect of inhibitor concentration on the corrosion rate of steel, the variation of inhibitor concentration is 0, 3, 5, 7 and 9%. Corrosion rate testing is done by mass loss method. Corrosion rate was tested on low carbon steel with and without inhibition of henna extract for 6 days. The results showed that the greater the concentration of inhibitor of henna extract used, the corrosion rate would decrease and the ability to inhibit corrosion would increase. The greatest corrosion efficiency occurred at a concentration of 9% with an efficiency of 88.84%. The results of X-Ray Diffraction (XRD) characterization showed that the phase formed was pure iron (Fe). Secondary Electron Microscopy (SEM) characterization showed uneven clusters and smaller sizes, holes and cracks were also less with the addition of inhibitory leaves extract than without the addition of inhibitory leaves extract. This result is reinforced by the percentage of corrosion products shown in the results of the characterization of Energy Dispersive Spectroscopy (EDS).]]>
<![CDATA[Analisis Laju Korosi Baja St37 dengan Inhibitor Ekstrak Daun Jambu Biji dalam Medium Korosif HCl 3% pada Suhu 80°C dan 100°C ]]>
<![CDATA[Putri Vidia Citra]]>;
<![CDATA[Ediman Ginting Suka]]>;
<![CDATA[Agus Riyanto]]>
<![CDATA[ Journal of Energy, Material, and Instrumentation Technology Vol 2 No 3 (2021): Journal of Energy, Material, and Instrumentation Technology ]]>
Publisher : <![CDATA[Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung ]]>
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DOI: 10.23960/jemit.v2i3.148
<![CDATA[This study aims to determine the effectiveness of guava leaf extract as an inhibitor of St37 steel in 3% HCl corrosive medium. Weight reduction method is used to determine the value of the resulting corrosion rate. Soaking of St37 steel at 80 ° C and 100 ° C was carried out with variations in the addition of 0%, 4%, and 8% inhibitor concentrations. The results show the lowest corrosion rate is at a concentration of 8% at an immersion temperature of 80 ° C with an inhibitor efficiency value of 84.07%. Fourier transform infra red (FTIR) analysis results showed that tannin content was found in guava leaf extract. The x-ray diffraction (XRD) results show that the phase formed is pure Fe phase. The results of scanning electron microscopy (SEM) show the presence of lumps on steel surfaces of various sizes which are the product of corrosion. This is reinforced by the results of energy dispersive spectroscopy. (EDS) which shows that the increasing number of lumps on the steel surface leaves fewer Fe elements and more FeO corrosion products.]]>
<![CDATA[Karakteristik Struktur Dan Fungsional Aspal Komposit dengan Perbandingan 85%:15% ]]>
<![CDATA[Samuel Nugroho Putra]]>;
<![CDATA[Simon Sembiring]]>;
<![CDATA[Agus Riyanto]]>
<![CDATA[ Journal of Energy, Material, and Instrumentation Technology Vol 2 No 4 (2021): Journal of Energy, Material, and Instrumentation Technology ]]>
Publisher : <![CDATA[Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung ]]>
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DOI: 10.23960/jemit.v2i4.149
<![CDATA[Synthesis and characterization of rice husk and asphalt silica composites was carried out with a ratio of 85%: 15%. Silica synthesis from rice husk was carried out by the sol-gel method. The materials used in this study were rice husks, asphalt, distilled water, gasoline, NaOH and HNO3. Then the silica and asphalt according to the comparison is set at 110oC. This study aims to look at the structural characteristics, functionality and physical properties, namely water content and thickness development of the sample. Based on the research that has been done, it can be concluded that from the results of XRD characterization the samples have silica and amorphous carbon structures, then based on FTIR characterization shows the -OH (hydroxil) functional groups occur at wave number 3524 cm-1, the hydroxide metal Si-OH (silanol) is oxidized into Si - O - Si and Si - O are formed at wave numbers 1084 cm-1, 810 cm-1 and 462 cm-1 and the formation of the C-H and C=O function group occurs at wave numbers 2923 cm-1 and 2361 cm-1. Then test the physical properties of the water content of 7.642% with a change in thickness development of 4.783%.]]>
<![CDATA[Sintesis Nanotitania dengan Cara Hidrotermal sebagai Fungsi Suhu ]]>
<![CDATA[Sumiyati Sumiyati]]>;
<![CDATA[Posman Manurung]]>;
<![CDATA[Suprihatin Suprihatin]]>
<![CDATA[ Journal of Energy, Material, and Instrumentation Technology Vol 2 No 4 (2021): Journal of Energy, Material, and Instrumentation Technology ]]>
Publisher : <![CDATA[Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung ]]>
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DOI: 10.23960/jemit.v2i4.152
<![CDATA[Research has been carried out on the synthesis of nanotitania by hydrothermal as a function of temperature. The purpose of this study was to determine the effect of temperature on the phase formation, structure and particle size of TiO2 using the hydrothermal method with TiOSO4 as the main ingredient. In this study, using temperature variations of 150, 200, 250 and 300°C and samples were characterized using X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The phases formed are the anatase and rutile phases which have a tetragonal structure and the hilly phase with an orthorhombic structure. The rutile phase appeared predominantly in each sample and the sulfuric phase only appeared at 250ºC. The anatase phase obtains a particle size of 10-18 nm, where the higher the temperature, the bigger the particle size. Furthermore, the rutile phase obtained a particle size of 14-25 nm, where the higher the temperature, the smaller the particle size.]]>
<![CDATA[Soliton Dynamics Analysis of Peyrard-Bishop-Dauxois DNA Model Using 4th Order Morse Potential Approach ]]>
<![CDATA[Alfin Edo Kaisar Lubis]]>;
<![CDATA[Yanti Yulianti]]>;
<![CDATA[Agus Riyanto]]>;
<![CDATA[Posman Manurung]]>
<![CDATA[ Journal of Energy, Material, and Instrumentation Technology Vol 3 No 4 (2022): Journal of Energy, Material, and Instrumentation Technology ]]>
Publisher : <![CDATA[Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung ]]>
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DOI: 10.23960/jemit.v3i4.62
<![CDATA[Research has been carried out to analyze the dynamics of the soliton DNA of the Peyrard-Bishop-Dauxois (PBD) model with 4th-order-approximation Morse Potential. The aim of research is to know physical changes of PBD model with 4th-order-approximation Morse Potential on stable and unstable state in describing denaturation process of DNA. The Process was carried out by finding a numerical solution of the 4th-order NLS as stable equation using finite-difference method. Then, the result was be simulated on Matlab. The results show that on the stable state, expand Morse Potential for 4th-order than for 3th-order rastically increased amplitude of oscillation from 1,89 pm to 16 pm. On the first unstable state, the stable equation was multiplied by (1+ ) where the value of = 0.25. On the second unstable state, the stable equation was multiplied two times by (1+ ) where the value of = 0.25. On three of them, amplitude of oscillation decreased from 16 pm, 2,9 pm to 2,5 pm. Comparing to previous order, there is a new addtion to the 4th-order Morse Potential coefficient which have physical meaning that larger expansion requires larger dissociation energy as well. So it can be concluded that the PBD model of DNA is descriptively able to explain the biological phenomenon of denaturation in DNA.]]>
<![CDATA[The Effect of Sintering Time on The Formation of The BPSCCO-2212 Superconductor Phase at The Levels of Ca = 1.10 Using The Wet Mixing Method ]]>
<![CDATA[Retno Asih]]>;
<![CDATA[Suprihatin Suprihatin]]>;
<![CDATA[Simon Sembiring]]>
<![CDATA[ Journal of Energy, Material, and Instrumentation Technology Vol 3 No 4 (2022): Journal of Energy, Material, and Instrumentation Technology ]]>
Publisher : <![CDATA[Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung ]]>
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DOI: 10.23960/jemit.v3i4.74
<![CDATA[This research was conducted to determine the effect of sintering time on to phase formation of superconducting BPSCCO-2212 with Ca content 1.10 by calculating the level of purity of the phases formed and looking at the microstructure. The variation of sintering time was 10, 20, 30, and 40 hours using the wet mixing method. The sample was calcinated at 800 °C for 10 hours and sintered at 830 °C. The XRD's characterization result showed that the highest volume fraction obtained in BPSCCO-2212/40 hours was 86.72%, while the lowest volume fraction of BPSCCO-2212/30 hours was 53.07%. The relatively high orientation degree of BPSCCO-2212/30 hours was 13.59%, while the lowest orientation degree of BPSCCO-2212/20 hours was 7.67%. The SEM's characterization result shows that all samples have not been oriented, and many voids (space between the plates) are still generated.]]>
<![CDATA[Automatization of Weight and Height Measurement Using Ultrasonic Sensors HC-SR04 and Load Cell Based on Arduino UNO at Integrated Services Posts (Posyandu) ]]>
<![CDATA[Syifa Ulyanida]]>;
<![CDATA[Amir Supriyanto]]>;
<![CDATA[Sri Wahyu Suciyati]]>;
<![CDATA[Junaidi Junaidi]]>
<![CDATA[ Journal of Energy, Material, and Instrumentation Technology Vol 3 No 4 (2022): Journal of Energy, Material, and Instrumentation Technology ]]>
Publisher : <![CDATA[Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung ]]>
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DOI: 10.23960/jemit.v3i4.103
<![CDATA[An automatic instrument for measuring weight and height has been realized using the HC-SR04 Ultrasonic Sensor and Arduino Uno-based load cell. This study aims to facilitate the weight and height measurement system to make data collection more efficient and accessible. The instrument is assembled by a frame made of PVC pipe to form a 112 cm high pole. The instrument's top is mounted with an Ultrasonic Sensor to detect height. At the bottom of the instrument, there are four load cells which are assembled with the principle of Wheatstone bridge and then connected to the HX711 module as a signal amplifier to the Arduino to detect weight. The measurement results are displayed on the LCD and the application interface created with Microsoft Visual Studio. The results showed that the instrument could measure and display the results of measuring weight and height well. The error value and accuracy of the Ultrasonic Sensor are 1.09% and 98.913%, respectively. The error values and load cell accuracy were obtained at 1.4% and 98.6%.]]>
