cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Yudi Guntara
Contact Email
guntaray@untirta.ac.id
Phone
+6281327787035
Journal Mail Official
gravity@untirta.ac.id
Editorial Address
Departemen of Physics Education Faculty of Teacher Training and Education Universitas Sultan Ageng Tirtayasa Jl. Raya Ciwaru No. 25, Sempu, Kota Serang, Banten, 42117.
Location
Kab. serang,
Banten
INDONESIA
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 13 Documents
 1   2 
Search results for , issue "Vol 6, No 1 (2020)" : 13 Documents clear
SINTESIS PERANCAH HIDROKSIAPATIT BERPORI DARI LIMBAH CANGKANG KERANG MENGGUNAKAN METODE REPLIKASI SPONS POLYURETHANE Fitri Afriani; Anisa Indriawati; Widodo Budi Kurniawan; Yekti Widyaningrum; Rifqi Almusawi Rafsanjani; Yuant Tiandho
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 6, No 1 (2020)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (378.744 KB) | DOI: 10.30870/gravity.v6i1.6741

Abstract

Researchers have synthesized hydroxyapatite-based porous scaffolds by the polyurethane sponge replication methods. Hydroxyapatite was derived from waste cockle shells through the co-precipitation method. The synthesis of porous scaffolds through the sponge replication methods is carried out by absorbing hydroxyapatite slurry through the addition of PVA and then followed by heating at 900oC to decompose the polyurethane and PVA. The best of slurry that can produce a porous scaffold in this study is the slurry that prepared through the ratio of hydroxyapatite:PVA = 80:20. The decomposition of the two polymers will leave macropores on the scaffold with an average size of 460 μm. Based on the thermogravimetric analysis, X-ray diffraction and FTIR spectrophotometer revealed that the PVA and polyurethane sponge were correctly decomposed, except for scaffolds with 40% PVA. Thus, the porous scaffolds synthesized in this study satisfies the requirements of porous scaffolds for the bone therapy process.  
Basic physics learning process in electrical engineering vocational education program using ispring presenter interactive powerpoints to improve student understanding Irwanto Irwanto
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 6, No 1 (2020)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (841.958 KB) | DOI: 10.30870/gravity.v6i1.7113

Abstract

The Department of Vocational Education in Electrical Engineering (JPVTE) is one of the departments based in the Faculty of FKIP UNTIRTA. The physics course at JPVTE is a fundamental concept that must be understood by the first half of students Because students' understanding of physics is still lacking, especially in the idea of mechanics. The research objectives are (1) to Facilitate lecturers in the learning process in the classroom and (2) to improve student understanding in understanding the concepts of mechanics in physics learning. The research method used was descriptive qualitative. The techniques of data collection were observation, tests, and interviews. The analysis technique used is to Determine the percentage of conceptual understanding with a percentage description. The Obtained results are (1) Using the Interactive PowerPoint Point Presenter is very easy for physics lecturers to explain and provide basic concepts of understanding mechanics in interacting with students. (2) Interactive Powerpoint iSpring Presenter can improve students' knowledge in understanding the concept of mechanics included in the high category Because The learning is interactive and fun. 
Assessment processes and characteristics of pineapple leaf fiber woven fabric (Ananas comosus (L.) Merr.) And ambon banana stem midrib (Musa paradisiaca var. sapientum(L.) Kunt.) Asri Widyasanti; Sita Halimatus Sa’diyah; Ahmad Thoriq
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 6, No 1 (2020)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (814.643 KB) | DOI: 10.30870/gravity.v6i1.6243

Abstract

Pineapple leaves and banana stem midribs are agricultural wastes that can be used as natural fibers and processed into fabric. The fabric processed by the woven method. The aims of this research were to analyze the stages of the production process of making woven fabric from pineapple leaf fibers and Ambon banana stem midribs and to analyze the characteristics of fabrics from pineapple leaf fibers and Ambon banana stem midribs. The method used was the experiment method. The process of made woven fabric was used handloom. The result of this research that have the best woven fabric was fabric from pineapple leaf fibers with the L* 64.33; a* 0.75; b* 15.83; H 87.26; tensile strength 53.34 kgf (weft); 23.95 kgf (warp); elongation value 10.77% (weft); 56.27% (warp); tear strength 28.42 kgf (weft); 3.73 kgf (warp); air permeability 133.80 cm3/cm2/s. The value of tensile strength and tear strength was in accordance with Indonesian National Standard 08-0056-2006 woven fabric quality requirements for suit. The use of fabric from nature fibers suggested for raw material of craft. 

Page 2 of 2 | Total Record : 13

 1   2 

Filter by Year

2020 2020


Reset
Filter By Issues
All Issue Vol 11, No 2 (2025) Vol 11, No 1 (2025) Vol 10, No 2 (2024) Vol 10 No 1 (2024) Vol 9, No 2 (2023) Vol 9, No 1 (2023) Vol 8, No 2 (2022) Vol 8, No 1 (2022) Vol 7, No 2 (2021) Vol 7, No 1 (2021) Vol 6, No 2 (2020) Vol 6, No 1 (2020) Vol 5, No 2 (2019) Vol 5, No 1 (2019) Vol 4, No 2 (2018) Vol 4, No 1 (2018) Vol 3, No 2 (2017) Vol 3, No 1 (2017) Vol 2, No 2 (2016) Vol 2, No 1 (2016) Vol 1, No 1 (2015) Article in Press More Issue