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Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika
Published by Universitas Sultan Ageng Tirtayasa
ISSN : 2442515X     EISSN : 25281976     DOI : http://dx.doi.org/10.30870/gravity.vxix
Core Subject : Science, Education,
Astronomy Earth & Planetary Sciences Education Materials Science & Nanotechnology Physics
The focuses of the manuscript received in the Gravity journal is limited to the topic: Physics Education (Media, Educational Policy, Assessment, Learning Model) Theoretical Physics Material Physics Earth and Environmental Physics Astrophysics Medical Physics Computational Physics and Instrumentation
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 8 Documents
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Search results for , issue "Vol 11, No 1 (2025)" : 8 Documents clear
Identifikasi Potensi Air Tanah Berdasarkan Metode Geolistrik Resistivitas dan Survei Hidrogeologi (Studi Kasus Dusun Sumber Waluh, Desa Pringgodani, Kec. Bantur, Kabupaten Malang) Susilo, Adi; Juwono, Alamsyah M.; Aprilia, Faridha; Idmi, Mohammad Habibiy; Hisyam, Farizky; Hasan, Muhammad Fathur Rouf
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 11, No 1 (2025)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v11i1.29457

Abstract

Bantur District in Malang Regency is an area that is vulnerable to drought disasters. A geoelectrical resistivity survey has been conducted in Sumber Waluh Hamlet, Pringgodani Village, Bantur District, Malang Regency as an effort to mitigate drought disasters. This study aims to identify the distribution of aquifer layers based on the results of subsurface resistivity modeling. The identified aquifer layers can be used as a solution to the problem of drought disasters. In this study, geoelectrical resistivity measurements used the VES technique, i.e. the Schlumberger configuration, which was carried out at seven points. Analysis of the modeling results showed the existence of a shallow aquifer layer with a depth of 8-20 meters and a deep aquifer with a depth range of 50-70 meters. The aquifer layer has a resistivity value between 0.51-31.36 Ωm which is interpreted as a tuffaceous sandstone layer. In hydrogeological modeling, it is interpreted that the position of the groundwater level is at a depth of 40-50 meters. Thus, the results of this study can be used as a recommendation for drilling points to find new water sources in the research area.
E-modules of applied physics based on i-sets and context-rich problem learning (crp) approach complementary to characters: a research and development (r&d) Yadiannur, Mitra; Rahmah, Rahmah
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 11, No 1 (2025)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v11i1.28718

Abstract

This study aimed to determine the feasibility and quality of teaching e-modules developed based on the I-SETS approach and CRP Complementary Character based on aspects of media assessment, material, practicality test, and readability test on the material of equilibrium of rigid bodies. This type of development research uses the ADDIED (Analyze, Design, Develop, Implementation, Evaluation, and Disseminate) model. The research subjects involved were two media experts, two material experts, and three peer reviewers, as well as three lecturers in charge of scientific courses in physics and one lecturer with expertise in religious studies courses. The subjects for the limited trial were 11 Civil and Earth Engineering Department students. The objects studied were the feasibility of teaching E-modules, material feasibility, readability aspects, and evaluation aspects of the achievement of learning and research objectives, in this case, the practicality test of teaching e-modules. The results showed that the e-Modules of Applied Physics Teaching Based on I-SETS and Context Rich Problem Learning (CRP) Approach Complementary to Characters was said to be feasible to use in terms of media aspects with an average Aiken's V score of 0.95, Material aspects with an Aiken's V score of 0.86, practicality tests with an Aiken's V score of 0.95, and readability based on assessments by students with an Aiken's V score obtained of 0.77 and obtained a product quality score of 3.63 with an outstanding category
Comprehensive characterization of the Lidar TF Mini sensor for its potential use in early breast cancer detection, employing a data-driven approach Annas, Muhamad Azwar; Marufah, Asmaul Lutfi; Chasanah, Uswatun
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 11, No 1 (2025)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v11i1.28900

Abstract

Breast cancer is a leading cause of death among women. Early detection helps prevent the spread of cancer to other organs, thereby reducing serious risks. This characterization aims to determine the potential of the TF Mini Lidar sensor if used as an early detection tool for breast cancer. Basically, this characterization uses a data-based approach. The method used in this study is to position the TFmini and HC-SR04 sensors in a fixed and stable position, after which the reflective object is positioned at a predetermined distance according to the distance to be used when detecting breast cancer, which is at a distance of 51-100 cm. PLX daq version 2.11 was used to facilitate data collection. The characterization of this sensor is based on the standard deviation, relative standard deviation, error and accuracy. This study concludes that the TFmini lidar sensor has a high potential to be used in breast cancer detection devices as a contour detector. This is in accordance with the measurement accuracy value of the tfmini sensor of 99.87%. However, additional sensors, such as cameras, are needed to obtain better contours and visual images.
Implementation of the Search, Solve, Create and Share (SSCS ) Learning Model to Improve Critical Thinking Skills Efiana, Mia; Jumini, Sri; Parmin, P; Ariyani, Mila
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 11, No 1 (2025)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v11i1.28776

Abstract

Conceptual understanding of science subjects is very important and needs to be instilled and developed in students . The study aims to analyze students' critical thinking skills in learning with the Application of the SSCS (Search, Solve, Create, Share ) learning model . The study uses a quantitative approach, quantitative methods with the type of causality research experiment (cause and effect research). The design used in this True experiment is the pretest-posttest control group design type. The research sample was taken using the simple random sampling method. Critical thinking skills are measured by descriptive questions, and analyzed using a percentage scale. To see the difference in critical thinking skills between the experimental class and the control class, the t-test was used and to see how big the difference was, the Gain test was used. The results of the study showed that the problem-solving abilities of students who used the Application of the SSCS (Search, Solve, Create, Share ) learning model with the t-test results showed that there was a difference in critical thinking skills between the classes that applied and those that did not, indicated by the significance level showing less than 0.05, this means that Ho is rejected and Ha is accepted. This means that there is a difference in the critical thinking skills of students who use the Search, Solve, Create, Share (SSCS) model and those who do not . The difference in students' critical thinking skills is 0.83 with a high category. The impact of learning using critical thinking stages on learning, students are expected to have good critical thinking skills in solving the problems faced well.
Analisis Evaporasi Awan Cumulonimbus di Lapisan Troposfer serta Potensi Terjadinya Curah Hujan Tinggi di Kabupaten Serang Inayah, Lailatul; Ruhiat, Yayat; M., Yus Rama Denny
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 11, No 1 (2025)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v11i1.29161

Abstract

Rain occurs after passing through several stages of the process, which becomes a repetitive cycle; the stages passed are evaporation (evaporation), condensation, and precipitation. Clouds are an element that becomes a factor that affects weather changes, and their shape can change depending on the type. The type of cloud that can cause bad weather is the Cumulonimbus cloud. This research aims to review the volume of rainfall in the Serang Regency area, which can be used as material to predict the steps that must be taken to prevent an event. This research uses data from the Geospatial Information Agency and CHIRPS, which is then processed in ArcGIS 10.8 software. And also based on previous research literature. The data obtained is then analyzed in the ArcGIS application by overlaying one data with other data to find the areas that experience high rainfall. It was found that the average high rain occurred in the western region of Serang Regency.
Identification of subsurface layers and shoreline shifts in abrasion-prone areas of the northern part of Bengkulu Province using multichannel analysis surface wave method and Google Earth Pro Sinaga, Yuni Karisma; Refrizon, Refrizon; Farid, Mochammad; Putri, Adinda Permata; Syah, Muhammad Taufiqurrahman; Sasabela, Naela Sahada
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 11, No 1 (2025)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v11i1.29134

Abstract

Shoreline change is a phenomenon that occurs due to land erosion or abrasion. This study aims to measure and analyze shoreline changes and determine rock stratigraphy based on the value of secondary wave propagation velocity (Vs) in the Northern Bengkulu Province. The research was conducted at 52 points along the coast with three main stages, namely seismic data acquisition in the field, dispersion analysis, and dispersion curve inversion. Observation of shoreline changes was conducted using quantitative methods with a geophysical approach, utilizing satellite data from Google Earth Pro. Meanwhile, stratigraphic acquisition was performed using the Multichannel Analysis of Surface Waves (MASW) method. The results showed that the soil layers in the Northern Bengkulu Province area include alluvium and poor consistency, soft layers. The second to fourth layer contains a medium-dense soil layer of coarse and fine-grain soil. The fifth layer comprises a soft rock layer consisting of coarse-grain and fine-grain soils. The Vs30 values obtained range from 115 m/s to 576 m/s, indicating that the Northern part Bengkulu Province area is dominated by Site Class SC (hard, highly compacted soil and soft rock) vulnerable to deformation, including abrasion. The research results obtained in the form of Vs30 values of 115 m/s to 576m/s are dominated by three rock formations: bintunan formation, lake deposits and andesite. Stratigraphic data and Vs30 values can be used for coastal infrastructure development, such as sea walls, breakwaters, and other protection structures to reduce abrasion.
Analysis of heavy metal content (Pb, Cu, Cd, and Hg) on refilled drinking water in Malang City based on atomic absorption spectroscopy using the PCA method Tazi, Imam; Margareta, Silvi Nadya; Chamidah, Ninik; Muthmainnah, Muthmainnah; Sasmitaninghidayah, Wiwis; Nadliriyah, Naqiibatin
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 11, No 1 (2025)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v11i1.28618

Abstract

Refillable drinking water was chosen as an alternative to bottled drinking water because the price is cheaper. Drinking water has benefits for the body, but if the levels of heavy metals contained exceed the Ministry of Health's standards, it will have a negative impact on body health. This research was conducted with the aim of determining the quality of refillable drinking water in terms of heavy metal levels. Atomic absorption spectroscopy was used to test the levels of heavy metals (Pb, Cu, Cd, and Hg) in the samples. Research data shows that refill drinking water samples A1, A2, A3, A4 and A5 contain heavy metals at levels that exceed the Ministry of Health's standards. PC1 and PC2 have the highest eigenvalues, with a proportion of PC1 of 60.86% and PC2 of 22.69%. The two PCs have a cumulative proportion of 83.55% and are considered capable of representing the entire data. PCA method was used to identify patterns and group samples based on heavy metal content, with PC1 and PC2 reflecting 83.55% of the data variability. Pb and Cd are the variables that have the longest resultant lines, which shows that these two variables have a large contribution to the formation of new variables. The three secondary data samples, namely A6, A7, and A8, are control samples because their quality is good. Refill drinking water samples that are almost close to control are samples A1, A4, and A5, while samples A2 and A3 are far from control. The further the sample is from the control, the lower the quality. The results of this study highlight the need for strict supervision of refillable drinking water depots and the implementation of more effective purification methods to reduce heavy metal content exceeding health standards.
Green Synthesis Ag Nanopartikel Berbasis Moringa Oleifera untuk Meningkatkan Absorbansi Pewarna Organik D205 pada Elektroda ZnO Nanorod Nurhamidah, Millah; Pujiarti, Herlin; Ma'arifah, Alfiatul; Diningsih, Ridha
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 11, No 1 (2025)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v11i1.29430

Abstract

Green synthesis of AgNPs using Moringa Oleifera extract has many advantages, including low toxicity, relatively low cost, environmentally friendly materials, and the availability of easily obtainable materials. AgNPs also have the advantage of enhancing light absorption in the visible region due to the occurrence of an optical phenomenon known as Localized Surface Plasmon Resonance (LSPR). In this study, AgNPs were composited with the organic dye D205 to examine the effect of AgNPs composites on the increased absorbance of the organic dye D205 on ZnO nanorod electrodes and its influence on the material's band gap. The method used in this research is the green synthesis of AgNPs by reducing Moringa Oleifera extract with the reducer AgNO3, which produces AgNPs powder. Then, in this study, ZnO nanorod electrodes were synthesized using the hydrothermal method. After that, the ZnO nanorod electrode was immersed with the organic dye D205, which was composited with AgNPs. The variation in this study lies in the variation of AgNPs composites at 0 wt% and 10 wt%. Sample characterization was performed using XRD, SEM, and UV-Vis. This study shows that the crystal size of AgNPs is 34 nm, and the maximum diffraction peak is at 2θ = 32.16˚ on the hkl (122) plane. The SEM results show an average diameter of AgNPs of 85 nm, with EDX indicating an atomic weight of Ag compound of 79%. The absorbance values in this study from the variations of AgNPs composites and organic dyes at 0 wt% and 10 wt% were 321 nm and 325 nm, respectively. The Band gap values of the AgNPs and organic dye composite variations at 0 wt% and 10 wt% are 3.69 eV and 2.99 eV, respectively. The research results show that the AgNPs composite with the organic dye D205 successfully increased absorbance and reduced the material's band gap by about 0.7 eV. Thus, the AgNPs composite with the organic dye D205 has the potential to improve efficiency in ZnO nanorod-based DSSC applications.

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