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JPSE (Journal of Physical Science and Engineering)
Published by Universitas Negeri Malang
ISSN : 25412485     EISSN : 25412485     DOI : -
Core Subject : Science, Engineering,
Astronomy Electrical & Electronics Engineering Materials Science & Nanotechnology Physics
JPSE (Journal of Physical Science and Engineering) is published twice a year in April and October by Physics Department of Universitas Negeri Malang, Indonesia. e-ISSN: 2541-2485 The journal is devoted to publishing original, frontier and important of various branches of Physics Science and Engineering. Editors welcome scholars, researchers and practitioners of Physics around the world to submit scholarly articles to be published through this journal (free of charge).
Arjuna Subject : -
Articles 99 Documents
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Effect of Sintering Temperature on BPSCCO Superconductor with Addition of Al2O3 Using Wet Mixing Method Aturroifah, Nuviya Illa Muthi; Wicaksono, Adi Tri; Hidayah, Ade Siyanti Nurul; Diantoro, Markus
JPSE (Journal of Physical Science and Engineering) Vol 8, No 1 (2023): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um024v8i12023p060

Abstract

Superconductors are materials that can conduct electric current without resistance. The application of superconducting materials in the field of transportation is the super-fast train or Magnetic Levitation (MagLev). BPSCCO added with Al2O3 nanoparticles has been successfully synthesized using the wet mixing method. In this study, variations in the sintering temperature (840 and 880oC) were carried out using the wet mixing method. The performance of BPSCCO with the addition of Al2O3 was carried out by testing XRD, SEM, and I-V. Based on the results of XRD characterization, the volume fraction, impurity, and crystal size respectively were 57.49% (BPSCCO-840), 38.96% (BPSCCO-880); 42.5% (BPSCCO-840), 38.96% (BPSCCO-880) and 21.38 nm (BPSCCO-840); 28.84 nm (BPSCCO-880). Based on the results of the SEM test, the sample slabs are regular and have little free space. Based on the I-V test results, the BPSCCO-840 sample has the highest electrical conductivity of 2.4x104 S/m at a current of 0.6 mA and the BPSCCO-880 sample has a conductivity of 2.8x104 S/m at a current of 0.3 mA
Spectrum Analysis of Sound Wave Recordings with Dolphinear type DE200 Based on Distance and Frequency Variations in Mahakam River Using Audacity Software Nurhanafi, Kholis; Mislan, Mislan; Zarkasi, Ahmad; Ariyanthi, Gita Putri; Purnama, Aditya Yoga; Saputra, Kormil
JPSE (Journal of Physical Science and Engineering) Vol 8, No 2 (2023): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um024v8i22023p111

Abstract

Dolphinear is an instrument for monitoring sound wave signals underwater. This study aims to see how the results of sound recording by Dolphinear type DE200 based on variations in distance and frequency of the sound source using the Audacity Software. In this study, the sound source will be generated through a waterproof speaker with a frequency variation of 100 Hz to 20 kHz. The distance between the sound source and the dolphinear is also varied from 1 to 5 meters. Audacity software is used to generate, record, and obtain the spectrum of the recorded audio sound signal. Based on the spectrum of the sound recorded by the DE200 dolphinear, frequency peaks close to the source frequency can be detected in recording using a 500 Hz sound source, but the main frequency peaks in the spectrum are difficult to detect in recording using sound sources above 500 Hz. In this study, it was also found that there is a limit to the recording ability of the dolphinear DE200 for frequencies above 18 kHz which is indicated by a decrease in intensity at that frequency.
Study on the Effect of Sulfuric Acid Addition on the Porosity and Permeability Properties of Nata De Soya Porous Membranes Lailatul Qodriyah, Nur; Masturi, Masturi; Harnina Bintari, Siti; Aji, Mahardika Prasetya
JPSE (Journal of Physical Science and Engineering) Vol 9, No 1 (2024): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

Porous nata de soya membranes are a promising filtration material due to their good mechanical and chemical properties. However, further modifications are necessary to enhance their filtration performance, one of which involves the addition of sulfuric acid. Therefore, the objective of this study is to investigate the effect of sulfuric acid addition on the porosity and permeability properties of porous nata de soya membranes. Porosity tests using Scanning Electron Microscope (SEM) were conducted to analyze the microstructure of the nata de soya membranes. The SEM characterization results provide detailed images of the membrane's pore structure, including size, distribution, surface area, and pore density. Additionally, permeability analysis was performed using Darcy's law. The results indicate that the addition of sulfuric acid affects the porosity and permeability of the membranes. Increasing the sulfuric acid concentration from 15% to 25% resulted in a decrease in porosity from 51% to 47%. The pore size increased from 0.35 µm at 15% to 0.86 µm at 25%. Furthermore, the surface area and pore density decreased with the increasing concentration of sulfuric acid, indicating a reduction in membrane effectiveness in filtration processes. The membrane's permeability decreased drastically from 2.55287 x 10-9 m² at 15% to 2.12739 x 10-12 m² at 25%, demonstrating that sulfuric acid causes pore closure and structural damage to the membrane, reducing its ability to allow fluid to pass through. The implications of this research suggest that porous nata de soya membranes are effective for microfiltration of bacteria (such as E. coli) and wastewater filtration.
IoT Application of Simple Solar Intensity Monitoring System Using Photovoltaic Panel Lestari, Resma Puji; Yuliza, Elfi; Ekawita, Riska
JPSE (Journal of Physical Science and Engineering) Vol 8, No 1 (2023): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um024v8i12023p066

Abstract

Solar radiation data is useful for solar power plant (PLTS) development, the agricultural sector, renewable energy, transportation and communication, and other disciplines. This data is generally obtained from government agencies. The device used to measure solar radiation is a pyranometer. However, this equipment has limited availability and the data information is only owned by certain regions. Therefore, it is necessary to develop a simpler measuring instrument for the intensity of solar radiation. So that data information is obtained easily and the operation of tools is easy. In this study, photovoltaic panels were used to read the intensity of solar radiation. When this panel is exposed to the sun it will generate electricity and its output is proportional to its radiation. Data monitoring utilizes IoT. The measured results of measuring the intensity of solar radiation have a maximum value of 450.21 W/m2. The measured magnitude of the solar radiation value shows that the influence factors in the form of sunlight intensity, ambient temperature, and panel output power are proportional to the radiation value while environmental humidity is inversely proportional to the radiation value.
Green Synthaesis Nanomaterial Zinc Oxide with Anthocyanin Extract Hylocereus polyrhizus for DSSC Application Sholikhah, Mar’atus; Cindya Sari, Elok Putri; Ramadhani, Dea Berliana; Kurniawan, Robi
JPSE (Journal of Physical Science and Engineering) Vol 8, No 2 (2023): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um024v8i22023p084

Abstract

Photovoltaic technology as an alternative to dye-sensitized third-generation solar cells is known as Dye-Sensitized Solar Cell (DSSC). DSSC is a device that can convert solar energy into electrical energy. Natural dye is used because it is relatively cheap and environmentally friendly. The type colour commonly used in DSSC are chlorophyll and anthocyanin. In this study the anthocyanin extract Hylocereus polyrhizus was used because it has a high absorption value. Nanoparticles ZnO is used because it has a relatively large energy gap value and can absorb sunlight optimally. The method used in this research is a spin coating, this method uses the procedure of making a thin film on the substrate. The characterizations were carried out using X-ray diffraction (XRD) to determine the crystal size of the ZnO nanoparticles, to know morphology nanoparticle can use scanning electron microscope (SEM), ultraviolet visible (UV-Vis) spectrometerer is used to determine the value of the band gap energy and solar cell simulator test to determine the efficiency value.  The XRD result had a crystal size 30.74 nm. The SEM results that the shape of the particles is oval and homogeneous by agglomeration. The band gap value is 3.67 eV. The efficiency in the solar cell simulator test for the DSSC nanomaterial ZnO with anthocyanin extract Hylocereus polyrhizus was 0,29%.
Adsorption of Phosphate in Synthetic Laundry Wastewater using Empty Palm Oil Fruit Bunch Ariani, Ismi Khairunnissa; Anifah, Eka Masrifatus; Hudayarizka, Riza; Paramita, Fika
JPSE (Journal of Physical Science and Engineering) Vol 9, No 1 (2024): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

The laundry wastewater contains phosphates that can lead to eutrophication. Treatment of laundry wastewater with phosphate concentration can be done physically or chemically. The adsorption method was selected due to its high efficacy, and economical operation. Activated carbon derived from Empty Palm Oil Fruit Bunch (EPOFB) biomass waste was utilized as the adsorbent, leveraging its lignocellulosic components such as cellulose, hemicellulose, and lignin, that can adsorb pollutants. This study aims to assess the impact of adsorbent dosage and contact time on the adsorption capacity and phosphate removal efficiency. The activated carbon was produced from EPOFB via carbonization and activation processes at 400°C and KOH 6M. The variables including adsorbent dosage and contact time, ranging from 0.2 to 1.0 g/100mL and 20 to 100 minutes, respectively. Results indicate that the adsorbent dosage affects phosphate removal from synthetic laundry wastewater, while contact time does not significantly impact removal efficiency. The highest removal efficiencies of 67.37% and 70.03% were achieved at optimal doses of 8 g/L and 10 g/L, respectively, with contact times of 20 and 80 minutes. The isotherm model and kinetics of phosphate adsorption onto synthetic laundry wastewater using EPOFB adsorbent were identified as Freundlich and pseudo-second order, respectively.
Optimization of Electro-Optic Sampling by Photodiode's Choice for Terahertz Detection Rizal, Fauzul; Benabdelghani, Imene
JPSE (Journal of Physical Science and Engineering) Vol 8, No 1 (2023): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um024v8i12023p076

Abstract

Despite being widely used in a lot of measurements involving the generation of electromagnetic radiation, most of the optimization of this EOS technique only focused on the detection crystal and nonlinear coefficient of the said crystal. After the detection crystal, the combined pump-probe beam should be separated again based on its polarization and measured simultaneously with photodiodes. The authors found out that there are not many studies focusing on this part of the EOS technique and decided to present in this paper to contribute to the better optimization of detection with the EOS technique. We found out that the change of photodiode could have a relationship with the detected signal’s shape in the time and space domain, alongside the change of delay-time detection.
Sensitivity Testing of Simple Metal Detection System on Coil Dimension Change and Measurement Distance Bangun, Abel Melido; Yuliza, Elfi; Ekawita, Riska
JPSE (Journal of Physical Science and Engineering) Vol 8, No 2 (2023): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

Metal residues in the soil at shallow depths can be detected with simple detectors. Development was carried out using several equipment tests. The purpose of this research is to design a simple metal detection system by testing the coil diameter, the wire diameter, and the number of coil windings to determine their effect on the detection distance of the metal detection system. The metal detection system in this study uses the pulse induction method, which uses one coil as a transmitter and receiver. The wire used 4 types of diameter sizes. For one size of wire diameter, three variations of the number of coil windings are made, and for each variation of the number of coil windings, five variations of coil diameter are made. The test results show that the diameter of the coil affects the detection distance of a simple metal detection system, the larger the diameter of the coil, the farther the detection distance for medium and large-sized metals, while for small metals, the lower the detection distance. Wire diameter affects the detection distance of a simple metal detection system, the larger the wire diameter, the farther the detection distance, and vice versa, the smaller the wire diameter, the lower the detection distance. The number of coil windings affects the detection distance of a simple metal detection system, the more turns, the farther the detection distance, while the fewer turns, the closer the detection distance.
Identification Lithology of Land Movement Zone using the Schlumberger Configuration Geoelectric Method in Samigaluh Distric Kulon Progo Septiana, Rena; Niyartama, Thaqibul Fikri; Wibowo, Nugroho Budi
JPSE (Journal of Physical Science and Engineering) Vol 9, No 1 (2024): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

Samigaluh Subdistrict in Kulon Progo Regency, Yogyakarta, is prone to landslides. The objective of this study is to determine the subsurface lithology in the land movement zone. The research was conducted using the Schlumberger configuration geoelectric method. Measurements were carried out deploying six lines with line lengths ranging from 100 to 150 m. The results identified a vertical distribution of subsurface rock resistivity values to a depth of 74.05 m with a value of 0.06-13749.51 Ωm. The lithology consists of soil (14.18-361.23 Ωm), clay (0.06-42.73 Ωm), sandstone (0.35-123.44 Ωm), conglomerate (1372.7-10168.66 Ωm), and andesite 13749.51 Ωm. Damage to buildings and roads were found around the formation boundary where the damage is located in the Kebobutak formation.

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