cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
jpkim.pps@unimed.ac.id
Editorial Address
Jl. William Iskandar Psr. V Medan Estate, Medan-Indonesia
Location
Kota medan,
Sumatera utara
INDONESIA
Jurnal Pendidikan Kimia (JPKim)
Published by Universitas Negeri Medan
ISSN : 20853653     EISSN : 25493116     DOI : 10.24114
Core Subject : Science, Education, Social,
Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science
Jurnal Pendidikan Kimia (JPKim) yang dikelola Program Pascasarjana Universitas Negeri Medan terbit 3 kali setahun, yakni bulan April, Agustus dan Desember. JPKim menerbitkan artikel ilmiah hasil-hasil penelitian pendidikan kimia dan kimia fundamental. JPKim juga menerbitkan artikel Review terkait Pendidikan Kimia dan Kimia.
Arjuna Subject : -
Articles 352 Documents
 32   33   34   35   36 
Detecting the interest of undergraduate students : A new way of chemistry education as a basis for instructional development Saadi, Parham; Almubarak, Almubarak; Prayogi, Restu; Abrori, Fadhlan Muchlas
Jurnal Pendidikan Kimia Vol. 16 No. 2 (2024): August
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i2.61402

Abstract

The achievement of learning targets is largely determined by how learning facilitates the needs of participants. Interest is one of the important points that teachers need to be aware of, especially in higher education environments to produce competent and resilient students (prospective teachers). The purpose of the research was to detect the interests of chemistry education students quantitatively and other themes that related to their lives. The quantitative approach was the method used in the study because it was in line with the data collection technique, namely the questionnaire technique with quantitative analysis. The results showed that the theme interest œeveryday life with the topic of food has the largest percentage, namely 86%, while the least theme was textile dyeing (58.30%) by chemical processes theme. Other additional themes revealed that social media (digital technologies) has 75.50% while teaching & learning and diversity have percentages of 64.70% and 59%, respectively. The conclusion was that detecting elements of interest in students could be supporting data for designing chemistry learning considering the changes in the mindset of the young generation due to digital culture. This research can also be used as a needs analysis in learning because a great interest in learning affects students™ academic performance. Research findings also give be a provision for students when they become teachers so that this research can be used in the school environment.
Synthesis and characteristics rubber seed oil bioadditive from Sumatera Utara as low pour point of CPO biodiesel Misdawati, Misdawati; Siswadi, Siswadi; Siregar, Muhammad Said
Jurnal Pendidikan Kimia Vol. 16 No. 2 (2024): August
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i2.62374

Abstract

One of the drawbacks of Crude Palm Oil (CPO) biodiesel is that it has high pour point which causes disadvantages in it™s use. North Sumatra is the second largest rubber producer in Indonesia, the use of rubber seeds as a bioadditive to reduce the pour point of CPO biodiesel is one of the right steps. The synthesis of rubber seed oil bioadditives is carried out in two processes; esterification process and transesterification process. This research aims to reduce the pour point of CPO biodiesel by mixing it with bioadditive of rubber seed oil. This study evaluated the effect of composition to find the best combination of biodiesel ratios in the mixture. The research results show that the greater the proportion of bioadditive rubber seed oil, the lower the pour point of the mixed biodiesel. Biodiesel with a low pour point is obtained at 10oC from mixing CPO biodiesel with bioadditive rubber seed oil at a composition of 75:25 and the optimal pour point is -7oC. Performance testing is carried out to differentiate fuel properties and fuel performance. The results show that B15 fuel produces the best performance at a maximum engine speed of 3000 rpm. In this round, a maximum power of 1.5708 kW was obtained, the lowest specific fuel consumption was 517.52 gr/kWh, thermal efficiency was 18.77%; the smallest CO content was 2.808%; HC 185 rpm; CO2 5.28%; NOx 4 ppm.

Page 36 of 36 | Total Record : 352

 32   33   34   35   36 

Filter by Year

2014 2024


Reset
Filter By Issues
All Issue Vol. 16 No. 3 (2024): J. Pendidik. Kim : December 2024 Vol. 16 No. 2 (2024): August Vol. 16 No. 1 (2024): April Vol 15, No 3 (2023): December Vol 15, No 2 (2023): August Vol 15, No 1 (2023): April Vol 14, No 3 (2022): December Vol 14, No 2 (2022): August Vol 14, No 1 (2022): April Vol 13, No 3 (2021): December Vol 13, No 2 (2021): August Vol 13, No 1 (2021): April Vol 12, No 3 (2020): December Vol 12, No 2 (2020): August Vol 12, No 1 (2020): April Vol 11, No 3 (2019): December Vol 11, No 2 (2019): August Vol 11, No 1 (2019): April Vol 10, No 3 (2018): December Vol 10, No 2 (2018): August Vol 10, No 1 (2018): April Vol 9, No 3 (2017): Desember Vol 9, No 2 (2017): Agustus Vol 9, No 1 (2017): April Vol 8, No 3 (2016): Desember Vol 8, No 2 (2016): Agustus Vol 8, No 1 (2016): April Vol 7, No 3 (2015): Desember Vol 7, No 2 (2015): Agustus Vol 7, No 1 (2015): April Vol 6, No 3 (2014): Desember Vol 6, No 2 (2014): Agustus Vol 6, No 1 (2014): April More Issue