Article Per Year (5 Year)
p-Index From 2020 - 2025
0.408
P-Index
This Author published in this journals
All Journal Linguistica Jurnal Penelitian Pendidikan IPA (JPPIPA)
PUSPITA SARI
UNIVERSITAS NEGERI MEDAN
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
ARTICLE SENTENCE ANALYSIS: USE OF CLAUSES AND PHRASES IN SCIENTIFIC SENTENCES CAWIR RUFINUS PURBA; YULIA ANGGRAINI; PUSPITA SARI; WANAPRI PANGARIBUAN; ISLI IRIANI INDIAH PANE
LINGUISTICA Vol 12, No 1 (2023): JANUARY 2023
Publisher : State University of Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jalu.v11i4.43164

Abstract

Sentence analysis in scientific articles is a literature study that can improve students' ability to think critically. Especially in articles that use English. Syntax analysis is the first step in reading writing before the reader can understand the meaning implied in an English sentence as a whole. This research is literature review research that aims to analyse sentence structure and determine the types of sentences, clauses, and phrases. By selecting the title of the article from the accredited journal Sinta, a search is carried out on each sentence and then classifying sentences and word combinations according to the character and type of sentences, clauses, and phrases.
Ceramic Oxide MgO-SiO2-Al2O3 as Capacitor Maryati Doloksaribu; Pintor Simamora; Mukti Hamjah Harahap; Kristin Kristin; Puspita Sari
Jurnal Penelitian Pendidikan IPA Vol 9 No 1 (2023): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i1.2532

Abstract

This study aims to analyze the effect of the composition MgO-SiO2-AL2O3 on dielectric constant, hardness, and microstructure. Good ceramics can be produced from an alloy of ceramic materials with a certain composition that is hard and able to store electric charge. Magnesium Oxide (MgO) ranked as the most heat-resistant insulating material for application practice. Silica (SiO2) is known for its hardness, besides that silica can also reduce plasticity and reduce dry shrinkage. The addition of alumina (AL2O3) to the ceramic resulted in a reduction in the mass of the ceramic. However, the hardness value obtained is increasing. So that the alloy between MgO-SiO2-AL2O3 is expected to produce ceramics that have superior mechanical and electrical properties. This study varied the composition of MgO-SiO2-AL2O3 with a composition ratio of 50%:50%:0%, 80%:15%:5%, 60%:32%:8%, 30%:63%,12%, 10%:75%:15%. Sintering was carried out at 12000C with a holding time of 8 hours. Then the sample's capacitance was measured using a capacitance meter and calculated the value of the dielectric constant, and hardness test using the Rockwell Hardness Tester type. The samples that have been tested for hardness are then taken three hardness values, namely low, medium, and high hardness to be tested for microstructure by SEM. The results show the MgO content increases, the value of the dielectric constant will increase but cause more pores. The level of SiO2-AL2O3 increases the higher the hardness value and the smaller the number of pores. Of the 5 samples that have been studied, the best sample used is sample 3 which has a good dielectric constant value, moderate hardness value, and the microstructure of the number of pores is not too much
Co-Authors CAWIR RUFINUS PURBA Isli Iriani Indiah Pane, Isli Iriani Kristin Kristin Maryati Evivani Doloksaribu Mukti Hamjah Harahap, Mukti Hamjah Pintor Simamora Wanapri Pangaribuan YULIA ANGGRAINI