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All Journal Buletin Peternakan Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Kartika Kimia Jurnal Pengabdian Magister Pendidikan IPA Jurnal Pijar MIPA Jurnal Ilmiah Berkala: Sains dan Terapan Kimia Jurnal Pendidikan dan Pengabdian Masyarakat
Erin Ryantin Gunawan
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology Mathematics Physics Veterinary Other

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Journal : Jurnal Penelitian Pendidikan IPA (JPPIPA)

 1 
PENERAPAN PEMBELAJARAN INVESTIGASI KELOMPOK UNTUK MENINGKATKAN KETERAMPILAN PROSES SAINS DITINJAU DARI INTELLIGENCE QUOTIENT SISWA Raudatus Solihah; Agus Abhi Purwoko; Erin Ryantin Gunawan
Jurnal Penelitian Pendidikan IPA Vol. 2 No. 2 (2016): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v2i2.39

Abstract

This research aims to know the effect of group investigation learning on student’s science process skill based on their IQ in SMAN 1 Mataram for eleventh grade students. This is a quasi experimental study using pretest postest control group design design. Pretest was taken to get data of student’s IQ. Posttest was also conducted to measure student’s science process skill. Sample was taken using nonprobability sampling from the population of eleventh grade student in SMAN 1 Mataram.The sample was two group of student each from two class, class XI sains 6 and as experimental group and class XI sains 5 as control group. The average os Student’s IQ on experimental group and control group were equal, both at 112. Learning processes were 12 x 45 minutes long in total. The experimental group showed better average score on posttest where they scored 82.40 on average, while control group only scored 74.83 on average. This value is statistically significant, at p = 0.007, less that 0.005. This result shows that implementation of group investigation can increase student’s science process skill.Keywords: Group investigation, science process skill, intelligence Quotient (IQ)ABSTRACT
SINTESIS LAPISAN TIPIS (THIN FILM) SnO2 DAN SnO2:Al MENGGUNAKAN TEKNIK SOL-GEL SPIN COATING PADA SUBSTRAT KACA DAN QUARTZ Yanika Diah Imawanti; Aris Doyan; Erin Ryantin Gunawan
Jurnal Penelitian Pendidikan IPA Vol. 3 No. 1 (2017): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v3i1.49

Abstract

This study has successfully synthesized SnO2 and SnO2 thin films by doping aluminum (Al) using the technique of sol-gel spin coating on glass and quartz substrates. The basic materials are Tin (II) chloride dihydrate (SnCl2.2H2O) and ethanol (C2H5OH) as solvent.  Material for doping is AlCl3 as much as 0.027 g, 0.053 g and 0.08 g to get Al dopant concentration of 5%, 10% and 15% respectively. The substrate used in this study are glass and quartz with the dimension of 10 mm x 10 mm x 3 mm. Detergent water, distilled water and 70% alcohol were used for the preparation of the substrates. Pure SnO2 sol solution was obtained by dissolving SnCl2.2H2O in ethanol, and SnO2:Al was obtained by adding AlCl3 to the solution of SnO2. The stirring process was done by using a hot plate magnetic stirrer to obtained a homogeneous solution (transparent). Sol solution of pure SnO2 and SnO2:Al were allowed for 24 hours as maturation (aging) process. Solution deposition on a substrate was done with a rotary speed of 2000 rpm for 3 minutes. Heating process was done at the annealing temperature of 200°C to 400°C by using a furnace for 1 hour to grow the crystalline of thin films. This thin films are very appropriate when applied to transparent conductive oxide (TCO) materials with high transparency and conductive character of tin (Sn) and aluminum (Al)Keyword: SnO2‚ aluminum‚ sol-gel, spin coating, substrate
Pemisahan Asam-asam Lemak N-Metilhidroksamik Berbasis Minyak Inti Buah Ketapang menggunakan Kromatografi Cair Kinerja Tinggi Ana Restu Nirwana; Dedy Suhendra; Erin Ryantin Gunawan
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 5 (2022): November
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i5.1611

Abstract

N-methyl fatty hydroxamic acids (N-MFHAs) is a derivative of a hydroxamic acid (FHA), were synthesized from ketapang seed oil (Terminalia catappa L.) with N-methyl hydroxylamine enzymatically using immobilized lipase (Lipozyme TL IM). N-MFHAs that are synthesized are still in a mixed state of triglycerides of the ketapang seed oil. This research aims to determine the optimum conditions for the separation of N-MFHAs into their single components and their percentage composition using High Performance Liquid Chromatography (HPLC). The specification of the HPLC system includes using the reverse phase column SGE C-18 ODS-2 and UV detector 213 nm. The optimum conditions for the separation of N-MFHAs in the HPLC system include using the mobile phase of methanol 100% and flow rate of 0.25 mL/minutes with an injection volume of 20 µL and sample concentration of 10.000 ppm. The percentage of the N-MFHAs composition successfully separated using HPLC were linoleoyl-methyl-fatty hydroxamic acid (13.09%), oleoyl-methyl-fatty hydroxamic acid (62.46%), palmitoyl-methyl-fatty hydroxamic acid (19.51%), and stearoyl-methyl-fatty hydroxamic acid (4.93%).
Co-Authors Agus Abhi Purwoko Ana Restu Nirwana Aris Doyan Dedi Suhendra Dedy Suhendra Dedy Suhendra Dhony Hermanto Evy Aryanti Lely Kurniawati Meyla Fitri Handayani Muhlis Muhlis Murniati Murniati Raudatus Solihah Sonia Larasati Datun Sri Seno Handayani Suriadi Suriadi Yanika Diah Imawanti