Articles
208 Documents
<![CDATA[Pengaruh ekstrak temulawak (Curcuma xanthorrhiza) terhadap kerusakan sel usus halus mencit (Mus musculus) yang diinduksi Piroxicam ]]>
<![CDATA[Moch. Haikal]]>;
<![CDATA[Septiana Kurniasari]]>
<![CDATA[ Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 7, No 1 (2021) ]]>
Publisher : <![CDATA[Universitas Sultan Ageng Tirtayasa ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.30870/gravity.v7i1.10181
<![CDATA[Piroxicam is a non-steroidal anti-inflammatory drug (NSAID) widely used as an analgesic and anti-inflammatory in rheumatoid arthritis, osteoarthritis. However, Piroxicam can cause gastrointestinal side effects and peptic ulcers when given orally. Piroxicam can also cause cholestasis. Also, if Piroxicam is used continuously in high doses, it can cause damage to the small intestine. A compound can minimize small intestinal cell damage called an antioxidant. This study aims to analyze the effect of curcumin extract (Curcuma xanthorrhiza) on Piroxicam-induced damage to mice's small intestinal cells (Mus musculus). This study used 80 male mice and divided into 3 groups, namely negative control (K-), negative Piroxicam (P-) and positive Piroxicam (P +). Giving ginger extract given orally at a dose of 1.4 gr / kgBW; 2.0 gr / kgBW; 2.6 gr / kgBW; 3.2 g / kg BW and 3.8 g / kg BW, while the Piroxicam dosage used was 10 mg / kg BW and 30 mg / kg BW. The results showed that the more Piroxicam doses were given, the higher the level of small intestinal cell damage. Along with increasing the dosage of ginger extract, the level of damage to small intestinal cells is reduced.]]>
<![CDATA[Item analysis: basic concepts of physics students in geometric optics ]]>
<![CDATA[Godelfridus Hadung Lamanepa]]>;
<![CDATA[Rosenti Pasaribu]]>;
<![CDATA[Claudia M.M. Maing]]>
<![CDATA[ Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 6, No 2 (2020) ]]>
Publisher : <![CDATA[Universitas Sultan Ageng Tirtayasa ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.30870/gravity.v6i2.8506
<![CDATA[The purpose of this study was to analyze students' items and abilities—the analysis for mapping test instruments and students' basic concepts regarding optics subjects before lectures are held. The test participants were 35 physics students. The analysis model of item response theory is a one-parameter logistic model or Rasch Model with the scope of analysis of the level of item difficulty, student ability, and statements that fit the item response model. Analysis of item responses and student responses carried out using Winstep version 3.73 software. The results of the qualitative analysis of the test items consisted of memory (C1) analysis (C4). The quantitative analysis using the Rasch model showed that 35% of the total items were difficult category items. For the suitability of test items in the instrument by 85% of items fit or generally function in measurement, more than 57% of students have the geometric optical ability in logit values of 0 to 1. The results of item analysis and student ability become information for teachers to design courses such as method selection, project implementation strategies, and assessments are undertaken. ]]>
<![CDATA[3D printing applications in bone fabrication: a review ]]>
<![CDATA[Evi J]]>;
<![CDATA[Siska Oktaviyani]]>;
<![CDATA[Mahjur Mahjur]]>;
<![CDATA[Fitri Afriani]]>
<![CDATA[ Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 7, No 1 (2021) ]]>
Publisher : <![CDATA[Universitas Sultan Ageng Tirtayasa ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.30870/gravity.v7i1.9541
<![CDATA[Bone scaffolding is an alternative solution to bone therapy, which is currently being developed in tissue engineering. This effort aims to produce a bone scaffold with a shape and specification according to bone therapy's needs. 3D printing is a scaffold fabrication method with promising prospects because it can produce scaffolding with physical characteristics as needed, both pore and physical. The method used in this article is a formal review to review various national and international literature using articles from 2000 to 2020 with the keywords "scaffold," "3D-printing", "bone," and "natural sources." The results of this article present various aspects regarding the use of 3D printing for scaffolding. Some aspects that are considered are how 3D printing works, the type of material used, and the scaffold's characteristics. It aims to get a clearer picture of the use of 3D printing, both its prospects/potential, application challenges, and future developments.]]>
<![CDATA[The effect of strengthening the prerequisite knowledge on student learning outcomes on the topic of values and eigenvectors ]]>
<![CDATA[N. Siregar]]>;
<![CDATA[Irma Novalinda]]>
<![CDATA[ Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 6, No 2 (2020) ]]>
Publisher : <![CDATA[Universitas Sultan Ageng Tirtayasa ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.30870/gravity.v6i2.8078
<![CDATA[The purpose of this study to determine the effect of strengthening prerequisite knowledge on students' achievement via and seeing students' perspectives on improving prerequisite knowledge. The research method was the Pre-Experiment, and the research sample was students of physics education on the 3rd semester in UGN Padangsidimpuan, totaling ten people. The instrument for collecting students' achievement is an essay test given to the pretest and posttest, and the device for managing students' perspectives on strengthening prerequisite knowledge is a questionnaire. Data analysis techniques for achievement were used non-parametric statistical tests with the Wilcoxon test and N-Gain, while the students' perspectives were analyzing through descriptive qualitative. This study's results indicate that there is a significant effect of strengthening the prerequisite knowledge on students' achievement, with a significance value of the Wilcoxon test count of 0.005. N-Gain obtained 0.74 in the high category. The results of the questionnaire distribution showed a positive perspective on strengthening prerequisite knowledge compared to previous learning. This medium indicates that there is an effect of enhancing prerequisite knowledge on students' achievement, an increase in achievement, and positive student perspectives on strengthening prerequisite knowledge. ]]>
<![CDATA[PROFIL JENIS REPRESENTASI SISWA UNTUK MEMECAHKAN PERMASALAHAN DALAM PEMBELAJARAN FISIKA ]]>
<![CDATA[Richard Semuel Waremra]]>;
<![CDATA[Merta Simbolon]]>;
<![CDATA[Syamsul Bahri]]>;
<![CDATA[Oswaldus Dadi]]>
<![CDATA[ Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 7, No 1 (2021) ]]>
Publisher : <![CDATA[Universitas Sultan Ageng Tirtayasa ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.30870/gravity.v7i1.9567
<![CDATA[This study aimed to determine the profile of the type of representation of students to solve problems in learning physics. This type of research is descriptive quantitative. The sample used in this study was 170 high school and vocational high school students in the Merauke district, and the sampling technique used was purposive sampling. The instrument used in this study was a problem-solving ability test instrument using a multimode representation by the Rosengrant stage and a questionnaire instrument for student responses to various types of representation in physics. The results showed that students could only use a single representation in the form of text, image, and mathematical representations. There are no students who can use the representation of line diagrams, bar charts, and free-body diagrams. The students' questionnaire responses showed that students used different representations in understanding the concept, and the type of representation most used was text representation.]]>
<![CDATA[Analysis of the use of learning models in physics subjects at SMAN 9 Kota Tangerang Selatan Banten ]]>
<![CDATA[Indri Sari Utami]]>;
<![CDATA[Ruth Soukaning Nugrah Djati]]>;
<![CDATA[Yus Rama Denny]]>;
<![CDATA[Yuvita Oktarisa]]>
<![CDATA[ Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 6, No 2 (2020) ]]>
Publisher : <![CDATA[Universitas Sultan Ageng Tirtayasa ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.30870/gravity.v6i2.8604
<![CDATA[The learning model is a frame in a learning process that can support the achievement of learning objectives. This study aims to determine, 1) the learning model used in physics subjects in schools, 2) the obstacles faced by the teacher in applying the learning model, and 3) efforts to overcome the obstacles in applying the learning model to achieve learning objectives. This research method is qualitative research. The survey was conducted on one physics teacher and three students determined by random sampling—observation data collection using interviews and documentation systems. While the data analysis technique used is descriptive qualitative analysis technique. From the research results obtained that: 1) the learning model carried out in the learning process at SMAN 9 Kota Tangerang Selatan Banten is CL (Cooperative Learning) and CTL (Contextual Teaching and Learning), 2) the constraints faced by the teacher when implementing the learning model are the ability students who are lacking in understanding the concepts of physics so that the difficulty in solving problems and challenges in choosing the equations used, 3) efforts to overcome the obstacles in using learning models are needed to develop appropriate learning models such as STEM-based CTL models that make students construct their knowledge. ]]>
<![CDATA[Online Problem Based Learning (OPBL) Berbantuan Media Simulasi Pada pembelajaran Fisika Dasar Untuk Meningkatkan Keterampilan Berfikir Kreatif ]]>
<![CDATA[Dina Rahmi Darman]]>
<![CDATA[ Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 7, No 1 (2021) ]]>
Publisher : <![CDATA[Universitas Sultan Ageng Tirtayasa ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.30870/gravity.v7i1.10008
<![CDATA[One of the lessons that have been affected by COVID19 is learning physics at every level of education, where physics learning which is usually done in person is converted into online. In learning physics at educational universities, it is expected to produce science teachers who can think creatively like scientists. The purpose of this study was to see an increase in students' creative thinking skills using Online Probleme Based Learning (OPBL) learning with the help of simulations. This study used a one-group pretest-posttest design. Analysis of research data by comparing scores of students' pre-test and post-test. From the data analysis, it was obtained that the average normalized gain score <g> creative thinking skills was 0.78 with the high category. While <g> on each activity indicator creative thinking skills are also in the high category, namely questioning skills of 0.88, guessing cause and effect 0.80, guessing the cause of an event 0.78, and improving the output of 0.87. So it can be concluded that OPBL with the help of simulation media can improve students' creative thinking skills with the high <g> category]]>
<![CDATA[Analisis Laju Korosi Pada Logam Melalui Proses Dipcoating Larutan Elektrolit ]]>
<![CDATA[Miranda Miranda]]>;
<![CDATA[Rahmawati Rahmawati]]>
<![CDATA[ Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 6, No 2 (2020) ]]>
Publisher : <![CDATA[Universitas Sultan Ageng Tirtayasa ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.30870/gravity.v6i2.6830
<![CDATA[This study aims to determine how to test the rate of metal corrosion using dip-coating electrolyte solutions. The electrolyte solutions used are vinegar, lime juice, saltwater, and rainwater—this research conducted by the method of losing weight by dipping the electrolyte solution. The sample immersed for 27 days. The calculation results obtained and samples without coating have a high corrosion rate, so they destroyed quickly. The higher the value of the corrosion rate, the more easily destroyed it will be, and the sample will easily weather/damaged. Likewise, on the contrary, the lower the corrosion rate, the less corrosion that occurs, and the better the sample is protected from rust. ]]>
<![CDATA[Students’ Understanding in Airborne Transmission of SARS-CoV-2 by Dynamic Fluid Perspective using Structure of Observed Learning Outcomes (SOLO) Taxonomy ]]>
<![CDATA[Bagus Helmeyanto]]>;
<![CDATA[Eko Hariyono]]>
<![CDATA[ Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 7, No 2 (2021) ]]>
Publisher : <![CDATA[Universitas Sultan Ageng Tirtayasa ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.30870/gravity.v7i2.11574
<![CDATA[Online learning imposed by government as an impact of the COVID-19 pandemic affected students’ ability to understand the authentic problem. Authentic problem used to train students’ ability to apply their knowledge in physics. This research mainly discusses about the students' levels understanding of the authentic problem that is SARS-CoV-2 airborne transmission using the SOLO taxonomy. This research used a descriptive qualitative approach using eight questions related to SARS-CoV-2 airborne transmission. Data collected via online survey platform and analyzed by calculating the percentage of student's level of understanding for each given question. The result shown that 59% student included in pre-structural level, 19% included in uni-structural level, 10% included in multi-structural level, 3% included in relational level, and 10% included in extended-abstract level. ]]>
