cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Ardi Widhia Sabekti, S.Pd., M.Pd.
Contact Email
sabekti.ardi@umrah.ac.id
Phone
-
Journal Mail Official
jurnalzarah@umrah.ac.id
Editorial Address
-
Location
Kota tanjung pinang,
Kepulauan riau
INDONESIA
Jurnal Zarah
Published by Universitas Maritim Raja Ali Haji
ISSN : 23547162     EISSN : 25492217     DOI : -
Core Subject : Science, Education,
Chemistry Education
Jurnal Zarah menerbitkan artikel hasil penelitian, pengembangan, dan kajian literatur tentang berbagai topik dalam bidang Pendidikan Kimia dan Ilmu Kimia.
Arjuna Subject : -
Articles 209 Documents
 4   5   6   7   8 
DESAIN E-MODUL BERBASIS KEMARITIMAN PADA MATAKULIAH KIMIA LINGKUNGAN DENGAN PENDEKATAN PROJECT BASED LEARNING Silitonga, Friska Septiani
Jurnal Zarah Vol 6 No 2 (2018): Jurnal Zarah
Publisher : Program Studi Pendidikan Kimia, Fakultas Keguruan dan Ilmu Pendidikan Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (689.695 KB) | DOI: 10.31629/zarah.v6i2.773

Abstract

Abstrak   Perkembangan teknologi informasi yang semakin pesatnya telah melingkupi setiap elemen bidang ilmu termasuk dalam bidang pendidikan. Salah satu pemanfaatan teknologi informasi dalam bidang pendidikan yaitu pembuatan media pembelajaran atau bahan ajar elektronik dan atau interaktif. Selain model, pendekatan, dan metode pembelajaran yang diperlukan dalam proses pembelajaran, bahan ajar dan media pembelajaran juga diperlukan agar meningkatkan minat dan motivasi mahasiswa dalam pembelajaran. Permasalahan yang dihadapi mahasiswa dalam pembelajaran kimia lingkungan yaitu belum tersedianya bahan ajar yang dapat digunakan mahasiswa serta belum mempunyai kemampuan analisis untuk menghubungkan antara ilmu kimia yang diperoleh dengan permasalahan lingkungan disekitar. Oleh sebab itu, dalam penelitian ini dibuat modul kimia lingkungan dengan memanfaatkan aplikasi Kvisoft Flipbook maker untuk membuat modul elektronik. Tujuan dari penelitian ini adalah membuat rancangan (desain) modul elektronik kimia lingkungan dengan pendekatan project based learning (PjBL). Penelitian ini menggunakan metode deskriptif atau menggambarkan proses desain dari modul elektronik kimia lingkungan dengan pendekatan PjBL dengan menggunakan Kvisoft Flipbook Maker. Dalam desain modul elektronik ini menggunakan beberap fitur seperti corel draw untuk meningkatkan tampilan modul seperti cover dan desain kertas dengan menggunakan tema kemaritiman atau potensi lokal Provinsi Kepulauan Riau yaitu laut,dan gonggong, sedangkan untuk membuat modul elektronik digunakan dan Kvisoft Flipbook maker pro versi 4.0.   Kata kunci: kvisoft flipbook maker, modul elektronik, pendekatan project based learning   Abstract   The progress of information technology which was increasingly developed has encompassed every element of the field of science included of education. One of the used of information technology in the education field was the created of learning media or electronic and or interactive teaching materials. In addition to the models, approaches, and learning methods needed in the learning processed, teaching materials and learning media were also needed to increase students interest and motivation in learning. The problems experienced by students in the study of environmental chemistry were the unavailability of teaching materials that can be used by students and did not have the analytical ability to connect the chemistry obtained with the surrounding environmental problems. Therefore, in this research was made an environmental chemistry module by utilizing the Kvisoft Flipbook maker application to make electronic module. The aimed of this research was to design electronic environmental chemistry modules with a project based learning approach (PjBL). This research used descriptive methods or describes the design processed of the environmental chemistry electronic module with the PjBL approach used Kvisoft Flipbook Maker. In the design of this electronic module used features such as corel draw to improve the appearanced of modules such as paper cover and design using maritime themes or local potential of Riau Islands Province as the sea, and gonggong, while to make electronic modules used and Kvisoft Flipbook maker pro version 4.0. Keywords: kvisoft flipbook maker, electrnic module, project based learning approach
Perbedaan Hasil Belajar Kimia Dengan Menggunakan Model Pembelajaran Kooperatif Tipe Team Quiz Dan Model Pembelajaran Kooperatif Tipe Teams Games Tournament (Tgt) Pada Pokok Bahasan Koloid Siswa Kelas X Teknik Otomotif Smk Negeri 6 Samarinda Nurfitri, Irma; Lestari, Sri; Amir M., Prof. Dr. Muh
Jurnal Zarah Vol 1 No 1` (2013): Jurnal Zarah
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (102.543 KB) | DOI: 10.31629/zarah.v1i1`.10

Abstract

Telah dilakukan penelitian tentang perbedaan hasil belajar kimia dengan menggunakan model pembelajaran kooperatif tipe Team Quiz dan model pembelajaran kooperatif tipe Teams Games Tournament (TGT) pada pokok bahasan koloid siswa kelas X Teknik Otomoif SMK Negeri 6 Samarinda. Penelitian ini bertujuan untuk mengetahui perbedaan hasil belajar kimia dengan menggunakan model pembelajaran kooperatif tipe Team Quiz dan model pembelajaran kooperatif tipe Teams Games Tournament (TGT) pada pokok bahasan koloid siswa kelas X Teknik Otomoif SMK Negeri 6 Samarinda. Populasi pada penelitian ini adalah seluruh siswa kelas X Teknik Otomotif SMK Negeri 6 Samarinda. Sampel penelitian adalah siswa kelas X Teknik Otomotif 2 dan X Teknik Otomotif 3. Kelas X Teknik Otomotif 2 merupakan kelas yang menggunakan model pembelajaran kooperatif tipe Team Quiz dan kelas X Teknik Otomotif 3 merupakan kelas yang menggunakan model pembelajaran kooperatif Teams Games Tournament (TGT). Pengumpulan data dilakukan dengan dua teknik yaitu teknik tes dan teknik non tes, adapun teknik non tes terdiri atas teknik dokumentasi dan observasi. Data penelitian dianalisis secara statistik uji t, dimana diperoleh thitung = -2,20 dan ttabel = -1,68 . Karena thitung ? -ttabel, pada taraf signifikan 5%, maka Ha diterima, yang berarti terdapat perbedaan hasil belajar siswa antara penggunaan model pembelajaran kooperatif tipe Team Quiz dan Teams Games Tournament (TGT).
Impact Of Emotional Intelligence And Parenting Style (Democratic) On The Performance Of Bilingual Chemistry Learning Khoirunnisa, Fitriah; Nordin, Prof. Madya Aziz Bin
Jurnal Zarah Vol 1 No 1` (2013): Jurnal Zarah
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (87.032 KB) | DOI: 10.31629/zarah.v1i1`.11

Abstract

Peningkatan Hasil Belajar Kimia Melalui Metode Pembelajaran Aktif Tipe The Learning Cell Pada Pokok Bahasan Koloid (Penelitian Tindakan Kelas Pada Siswa Kelas XI IPA SMAN 16 Samarinda) Widarti, Anis
Jurnal Zarah Vol 1 No 1` (2013): Jurnal Zarah
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (193.377 KB) | DOI: 10.31629/zarah.v1i1`.12

Abstract

Penggunaan Metode Pembelajaran Aktif Tipe The Learning Cell untuk Meningkatkan Hasil Belajar Siswa Pada Pokok Bahasan Koloid (Penelitian Tindakan Kelas pada Siswa Kelas XI IPA SMAN 16 Samarinda). Penelitian ini bertujuan untuk meningkatkan hasil belajar Kimia melalui Metode Pembelajaran Aktif Tipe The Learning Cell pada Pokok bahasan Koloid Kelas XI IPA di SMAN 16 Samarinda. Jenis penelitian ini bersifat deskriptif yang berarti memaparkan data yang diperoleh melalui lembar observasi setiap pertemuan dan Post Test di setiap akhir siklus. Setiap siklus terdapat 4 tahap yaitu, perencanaan, pelaksanaan tindakan, observasi dan refleksi. Data aktivitas siswa dan guru diperoleh dengan metode observasi. Hasil belajar siswa diperoleh dari nilai siswa pada saat menjelaskan kembali materi yang disampaikan oleh guru dan nilai Post Test di setiap siklusnya. Hasil penelitian menunjukkan bahwa hasil belajar kimia siswa melalui metode pembelajaran aktif tipe The Learning Cell dapat meningkat. Peningkatan hasil belajar siswa dilihat berdasarkan jumlah siswa yang tuntas setiap siklusnya. Standar ketuntasan yang digunakan adalah 70 % dengan nilai KKM 70. Siklus pertama, jumlah siswa tuntas adalah 20 siswa atau 48,78%, dengan nilai rata-rata 66,39 ; sedangkan siklus kedua jumlah siswa yang tuntas adalah 34 siswa atau 87,80% dengan nilai rata-rata 75, 51 dan pada siklus ketiga jumlah siswa yang tuntas adalah 40 atau 97, 56% dengan nilai rata-rata 78, 48.
Development Of Ionic Liquid As Catalyst For Transesterification Reaction Alimuddin, Jamila Binti; Yarmo, Prof.Dr. Mohd Ambar
Jurnal Zarah Vol 1 No 1` (2013): Jurnal Zarah
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (414.49 KB) | DOI: 10.31629/zarah.v1i1`.13

Abstract

Ionic liquid had a various uses and among them is as catalyst in a reaction. This research was carried out to synthesis and developed the choline chloride based ionic liquid to investigate their ability as a catalyst in transesterification reaction. The ionic liquid synthesized was choline chloride.2ZnCl2 and choline.2urea based system. Both of the ionic liquid synthesize were characterized by using Infra-red spectroscopy (FTIR) and Nuclear Magnetic Resonance spectroscopy (1H NMR & 13C NMR). Characterization result confirmed the functional group and the structure of the ionic liquids was as expected. Both ionic liquid were applied as a catalyst for the transesterification reaction and the resulting product was analyzed by GC-FID and GCxGC-MS (ToF). The transesterification reaction of palm olein and buthanol with the presence of choline chloride.2ZnCl2 gives 25.7% yields while with the use of choline chloride.2urea gives 25.0% yields. The results show that the acidity of choline chloride.2ZnCl2 and the basic properties of the choline chloride.2urea were not really suitable to be used as catalyst in the transesterification reaction.
Production Of Biolubricant Based On Jatropha Curcas Oil And Linear Alcohol Abstract Adriani, Nina; Salimon, Prof.Dr. Jumat
Jurnal Zarah Vol 1 No 1` (2013): Jurnal Zarah
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (422.887 KB) | DOI: 10.31629/zarah.v1i1`.15

Abstract

The use of oils and fats for lubrication purposes has been practiced for many years. This is starting that realized since the mineral oil in a limited number. In this research, the production of biolubricant based plant oil is Jatropha Curcas oil and linear alcohol. Oil produced from the fruits is 44.30%. However, oxidative stability and low pour point are problem for biolubricant. The method used to overcome this problem is epoxidation process and ring opening. Epoxidation process successfully carried out by testing the oxyrane value and also FTIR analysis, where the peak of alkenes is 3007 cm-1. Epoxy peak appeared at 843 and 824 cm-1, which is testament to the success of epoxy ring is formed. Ring opening proved successful with FTIR analysis of the appearance of hydroxyl groups at the peak of 3444 cm-1, the peak of ether in 1097 cm-1, and the loss of epoxy peak. Bioubricant which is produced in the form of alcohol ether is to produce five types of biolubricant, which are decanol ether, dodecanol ether, tetradecanol ether, hexadecanol ether and octadecanol ether. 1H dan 13C NMR analysis is also succeeded in proving the presence of key functional groups for the fifth type of biolubricants. In terms of viscosity and flash point, lubricant successful enhanced oil-based plants, but not succeded to reduce the pour point.
Preparation Of Natural Rubber/High Density Polyethylene Composite Reinforced Rice Husk Treated With Liquid Epoxidized Natural Rubber (LENR) Syafri, Rahmadini; Abdullah, Prof Dr. Ibrahim; Ahmad, Prof Madya Dr. Ishak
Jurnal Zarah Vol 1 No 1` (2013): Jurnal Zarah
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (192.44 KB) | DOI: 10.31629/zarah.v1i1`.16

Abstract

Thermoplastic natural rubber (TPNR) composites with rice husk (RH) as filler were prepared via melt blending using an internal mixer Brabender Plasticorder. TPNR matrix was prepared from natural rubber (NR) and high density polyethylene (HDPE) with a composition ratio of 60:40. The optimum processing parameters for NR/HDPE matrix was obtained at 135 oC, at mixing rate of 50 rpm and blending time of 12 minutes, while the parameters for the NR/HDPE/RH composite was at 135 oC mixing rate of 45 rpm and blending time of 12 minute. Addition of rice husk into the NR/HDPE matrix was aimed to reinforce the composites with the filler. The high silica content of rice husk has made rice husk to be used as potential reinforcement filler for composites. However, the application of rice husk as filler is limited due to the hydrophilic nature of rice husk surface causing incompatibility and weak interfacial adhesion between rice husk and the hydrophobic polymer matrix. Hence, the cellulose surface of rice husk has to be modified. The rice husk was treated with sodium hydroxide (NaOH) as pre-treatment and later coated with liquid epoxidized natural rubber (LENR). Several concentrations of NaOH solution were used for alkali treatment of untreated rice husk (RHi) and the most effective was at 5% NaOH in aqueous solution (RHiNa). LENR coating was also carried out at several concentrations from 5% to 20% LENR in toluene. Characterizations of rice husk surfaces were analyzed by FTIR, optical microscope and SEM micrograph. The mechanical properties of rice husk filled composites observed, showed that the maximum value obtained were for composites reinforced with alkali treated and coated with 10% of LENR (RHiNaLE 2). The tensile and impact strength obtained were 6.9 MPa and 24.6 kJ/m2 respectively. Effects of RHiNaLE 2 loading on tensile and impact strengths of composites showed that the properties decreased at higher loadings due to agglomeration of filler particles. However the tensile modulus and hardness were found to increase with filler loading. The dynamic mechanical thermal analysis also showed that composites prepared exhibited a shift in the tan delta peak (Tg) to a higher temperature due to the increased RHiNaLE 2-Matrix interaction. In conclusion, modification of rice husk surface via NaOH treatment and coating with LENR was successful in reducing the hydrophilic nature of rice husk powder. The RHi-Matrix interfacial adhesion had improved which lead to higher mechanical properties of the composites prepared.
Synthesis Of Antibacterial Cream Based On Allium Sativum As Topical Delivery Henika, Fany; Khalid, Dr Rozida
Jurnal Zarah Vol 1 No 1` (2013): Jurnal Zarah
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (366.529 KB) | DOI: 10.31629/zarah.v1i1`.17

Abstract

This study was conducted to produce a topical delivery system which has an active ingredient which can be used for treatment of skin diseases such as acne and common skin disease. In this study, four cream formulation were prepared. Three of four cream formulations contained Allium sativum extract 0.35%, 0.5% and 0.65%. Infrared spectroscopic analysis was performed on four samples of different extracts of Allium sativum. In addition, Allium sativum extract and four samples of different creams have alsodone testing for antibacterial activity. In this study, Sthaphylococcus aureus and Escherichia coli were used as microorganism. The Results showed that samples of fresh methanol extract Allium sativum provide better antibacterial activity compared to the three other samples. Four samples of cream with different percentage of active ingredients showed have no antibacterial effect after antibacterial activity testing been done. However, in terms of quality, the samples of the cream produced a good quality, based on the value of pH, viscosity and stability for 3 weeks of storage
Pembuatan Lapisan Tipis TiO2 -DOPED Logam M (M= Ni, Cu dan Zn) Dan Apliksi Sifat Katalitiknya Pada Penjernihan Air Rawa Gambut Willian, Nancy; Arif, Prof. Syukri
Jurnal Zarah Vol 1 No 1` (2013): Jurnal Zarah
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (292.129 KB) | DOI: 10.31629/zarah.v1i1`.18

Abstract

Penggunaan Strategi Pembelajaran Aktif Tipe Everyone Is A Teacher Here Untuk Meningkatkan Hasil Belajar Kimia Pada Pokok Bahasan Hidrokarbon Khoirunnisa, Fitriah; C.W, Maasje; Nurlaili
Jurnal Zarah Vol 2 No 1 (2014): Jurnal Zarah
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (285.761 KB) | DOI: 10.31629/zarah.v2i1.19

Abstract

Penelitian ini bertujuan untuk meningkatkan hasil belajar siswa kelas X mata pelajaran Kimia dengan pokok bahasan Hidrokarbon melalui strategi pembelajaran aktif tipe Everyone is a Teacher Here. Adapun subjek penelitian adalah seluruh siswa kelas X-2 SMA N 14 Samarinda. Jenis penelitian ini bersifat deskriptif yang berarti menggambarkan atau menjelaskan data yang diperoleh melalui lembar observasi, tugas dan ulangan harian di setiap akhir siklus. Setiap siklus terdiri atas dua kali pertemuan. Dalam setiap siklus terdapat 4 tahapan kegiatan, yaitu perencanaan, pelaksanaan tindakan, observasi dan refleksi. Data aktivitas siswa dan guru diperoleh dengan metode observasi. Hasil belajar siswa diperoleh dari nilai tugas dan nilai ulangan harian di setiap akhir siklusnya. Hasil penelitian menunjukkan bahwa hasil belajar kimia siswa melalui strategi pembelajaran aktif tipe Everyone is a Teacher Here dapat meningkat. Peningkatan hasil belajar siswa dilihat berdasarkan jumlah siswa yang tuntas pada nilai akhir setiap siklusnya. Standar ketuntasan klasikal yang digunakan adalah 60% dengan nilai ketuntasan minimal sebesar 60. Siklus pertama, jumlah siswa yang tuntas adalah 25 siswa atau 73,53%, dengan nilai rata-rata 65,09; sedangkan pada siklus kedua jumlah siswa yang tuntas adalah 28 siswa atau 82,35% dengan nilai rata-rata 67,44; dan pada siklus ketiga jumlah siswa yang tuntas adalah 31 siswa atau 91,18% dengan nilai rata-rata 80,06.

Page 6 of 21 | Total Record : 209

 4   5   6   7   8 

Filter by Year

2013 2025


Reset
Filter By Issues
All Issue Vol. 13 No. 2 (2025): Jurnal Zarah Vol. 13 No. 1 (2025): Jurnal Zarah Vol. 12 No. 2 (2024): Jurnal Zarah Vol. 12 No. 1 (2024): Jurnal Zarah Vol. 11 No. 2 (2023): Jurnal Zarah Vol. 11 No. 1 (2023): Jurnal Zarah Vol. 10 No. 2 (2022): Jurnal Zarah Vol. 10 No. 1 (2022): Jurnal Zarah Vol 9 No 2 (2021): Jurnal Zarah Vol 9 No 1 (2021): Jurnal Zarah Vol 8 No 2 (2020): Jurnal Zarah Vol. 8 No. 2 (2020): Jurnal Zarah Vol 8 No 1 (2020): Jurnal Zarah Vol 7 No 2 (2019): Jurnal Zarah Vol 7 No 1 (2019): Jurnal Zarah Vol. 6 No. 2 (2018): Jurnal Zarah Vol 6 No 2 (2018): Jurnal Zarah Vol 6 No 2 (2018): Jurnal Zarah Vol 6 No 1 (2018): Jurnal Zarah Vol 6 No 1 (2018): Jurnal Zarah Vol 5 No 2 (2017): Jurnal Zarah Vol 5 No 2 (2017): Jurnal Zarah Vol. 5 No. 2 (2017): Jurnal Zarah Vol 5 No 1 (2017): Jurnal Zarah Vol 5 No 1 (2017): Jurnal Zarah Vol 4 No 1 (2016): Jurnal Zarah Vol 4 No 1 (2016): Jurnal Zarah Vol 3 No 1 (2015): Jurnal Zarah Vol 3 No 1 (2015): Jurnal Zarah Vol 2 No 1 (2014): Jurnal Zarah Vol 2 No 1 (2014): Jurnal Zarah Vol 1 No 1` (2013): Jurnal Zarah Vol 1 No 1` (2013): Jurnal Zarah More Issue