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Nadia Amida
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Alotrop Jurnal Pendidikan dan Ilmu Kimia
Published by Universitas Bengkulu
ISSN : 22528075     EISSN : 26152819     DOI : -
Core Subject : Science, Education,
Chemistry Education
Welcome to the Journal Alotrop, is an Open-Acces and peer-reviewed journal aims to publish scientific articles related to chemistry and education :i.e an interaction between natural sciences, educational sciences, technologies and management for both education and sciences and wise use of resources. We particularly encourage manuscripts that discuss contemporary research that can be used directly or inderecly in adressing critical issues and sharing of advanced knowledge and best practices in chemistry and education.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 12 Documents
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Search results for , issue "Vol 3, No 2 (2019)" : 12 Documents clear
PERBANDINGAN HASIL BELAJAR SISWA MENGGUNAKAN PEMBELAJARAN KOOPERATIF TIPE TEAM GAMES TOURNAMENT (TGT) DENGAN MEDIA ULAR TANGGA DAN MEDIA PUZZLE DI KELAS XI SMA NEGERI 01 BENGKULU TENGAH Aisha Syafitri; Hermansyah Amir; Elvinawati Elvinawati
ALOTROP Vol 3, No 2 (2019)
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/atp.v3i2.9911

Abstract

This study aims to determine the comparison of student learning outcomes using cooperative learning type Teams Games Tournament (TGT) with media snake ladder and media puzzle in class XI SMA Negeri 01 Bengkulu Tengah Year 2017/2018 on the subject of colloidal system. This research is a quasi experimental research with the population of all students of class XI SMA Negeri 01 Bengkulu Tengah and the sample is XI MIPA 3 experiment I applying Snake Ladder media and XI MIPA 4 as experiment class II which apply puzzle media. Student learning outcomes in this study is seen from the difference between pretest and posttest values. In the experimental class I which uses snake ladder media, the average value of the increase in students' cognitive learning outcomes is 43.30. Whereas in the experimental class II that uses media puzzle, the average value of the increase in students' cognitive learning outcomes is 35.97. From a series of statistical tests conducted hypothesis testing using t-test with a significant level of 0.01 obtained tHitung> tTable (2.42> 2.39). The results showed that there was a significant difference between the learning outcomes of students who were taught by cooperative learning using Snake Media Appliance and Puzzle media. The result of this research can be concluded that  in general the result of student learning by applying cooperative learning model of Team Games Tournament (TGT) type with snake ladder media is higher than with puzzle media on colloidal system subject.
PENGARUH KADAR Aspergillus niger TERHADAP PRODUKSI BIOETANOL DARI BONGGOL PISANG KEPOK ( Musa paradisiaca L) Junaini Junaini; Elvinawati Elvinawati; Sumpono Sumpono
ALOTROP Vol 3, No 2 (2019)
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/atp.v3i2.10496

Abstract

This study aims to determine the effect of Aspergillus niger levels on bioethanol production in banana cobs using Saccharfication Simultation Fermentation (SSF) method. This research uses banana kepok (Musa paradisiaca L.) obtained from Enggano Island of Bengkulu Province. Enggano Island is one of the outermost islands of Bengkulu Province which has a coordinate point of 5023'25,000 '' LS - 102014'16,000 '' BT. Samples of banana done preparation before the hydrolysis and fermentation process by smoothing the banana cobs using a blender until it becomes mush. Samples in the form of slurry were then added by Aspergillus niger and Sccharomyces cerevisiae. Hydrolysis performed for 72 hours which then continued with the fermentation process for 5 days. In the study there were 5 treatments: addition of Aspergillus niger 107 CFU/mL, addition of 10 mL Saccharomyces cerevisiae, addition of 10 mL Saccharomyces cerevisiae + Aspergillus niger 106 CFU/mL, 10 mL Saccharomyces cerevisiae + Aspergillus niger 107CFU/mL and 10 mL Saccharomyces cerevisiae + Aspergillus niger 108CFU/mL. The fermentation results were distilled and then measured the ethanol content by the specific gravity method. Ethanol content obtained from each treatment were 3.995%, 6.218%, 6.825%, 9.065%, and 12.348%, respectively. From one-way analysis test can be obtained the value of Fcount and Ftabel respectively are 25.73 and 5.19, so the value of Ftable< Fcount which means each treatment has a different result significantly.

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