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All Journal CHEMISTRY PROGRESS Jurnal Pendidikan Kimia Undiksha Sainstek Jurnal Natur Indonesia Jurnal Pilar Sains Jurnal Inovasi Pendidikan Kimia Tadris: Jurnal keguruan dan Ilmu Tarbiyah Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Jurnal Teknologi Pertanian Jurnal Agroindustri Biology, Medicine, & Natural Product Chemistry Proceeding 7th International Seminar on Regional Education Indonesian Journal of Chemical Science Jurnal Manajemen Pendidikan Jurnal Penelitian Pendidikan IPA (JPPIPA) PEMBELAJAR: Jurnal Ilmu Pendidikan, Keguruan, dan Pembelajaran Journal of Natural Science and Integration Jurnal Teknologi & Industri Hasil Pertanian Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Batoboh : Jurnal Pengabdian Pada Masyarakat Chemistry Education Practice Community Development Journal: Jurnal Pengabdian Masyarakat Edunesia : jurnal Ilmiah Pendidikan Eduproxima : Jurnal Ilmiah Pendidikan IPA Journal of Educational Sciences UNESA Journal of Chemical Education Jurnal Pengabdian Fakultas Pertanian Universitas Lampung Jurnal Agroindustri Berkelanjutan
Maria Erna Kustyawati
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Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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KESTABILAN LAPISAN PASIF PERMUKAAN BAJA LUNAK DALAM MEDIA NaCl, NaOH, HCl dan H2SO4 MENGGUNAKAN INHIBITOR KOROSI KARBOKSIMETIL KITOSAN Erna, Maria
Indonesian Journal of Chemical Science Vol 5 No 2 (2016)
Publisher : Indonesian Journal of Chemical Science

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Abstract

Telah dipelajari kestabilan lapisan pasif yang terbentuk pada permukaan baja lunak menggunakan inhibitor Karboksimetil kitosan (KMK) dengan menggunakan metode polarisasi potensiodinamik dan berat hilang serta dikarakterisasi morfologi permukaan baja menggunakan peralatan SEM-EDS. Hasil penelitian didapatkan bahwa kestabilan lapisan pada permukaan baja dipengaruhi oleh lingkungannya. Untuk lingkungan aquades, NaCl dan NaOH kestabilan lapisan lebih stabil dibandingkan dengan lingkungan HCl dan H2SO4. Hasil foto morfologi dan spektrum dari peralatan Scanning Electron Microscope- Energy Dispersive X-ray Spectroscopy (SEM-EDS), memperlihatkan lapisan permukaan baja lunak dalam H2SO4 mengalami kerusakan lebih dibandingkan dalam HCl yaitu ditandai terbentuknya lubang-lubang pada permukaan baja lebih banyak terjadi.  
PENGGUNAAN PERMAINAN UNO CARD SEBAGAI MEDIA CHEMO-EDUTAINMENT UNTUK MENINGKATKAN AKTIVITAS DAN KETUNTASAN BELAJAR SISWA PADA MATERI SISTEM PERIODIK UNSUR DI KELAS X.10 SMA NEGERI 2 TAMBANG Marlisa, Lani; Copriady, Jimmi; Erna, Maria
Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 4, No 1 (2017): Wisuda Februari 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan

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Abstract : This study aims to improve the activity and mastery learning students on the material elements of class X.10 Senior High School of class X.10. This form of research is the Research Action Class . The study was conducted collaboratively, where researchers and teachers cooperate at this stage of planning, implementation, observation, and reflection. The implementation of the actions carried out by teachers, while a researcher as an observer. The research subject is class X.10 SMA Negeri 2 Tambang year 2016/2017 which amounted to 37 students, consisting of 17 male students and 20 female students. The research results obtained are the use of Uno Card games as the Chemo-Edutinment media can improve the learning activities of students of class X.10 SMA Negeri 2 Tambang with the percentage average cycle I of 70,57% and 85,89% for the second cycle. The use of Uno Card games as the Chemo-Edutainment media can improve learning completeness students in class X.10 of SMA Negeri 2 Tambang with the percentage amounted to 91,90% the first cycle and the second cycle of 100%.   
FLAVOR FORMATION IN FRUIT AND VEGETABLES Kustyawati, Maria Erna
Jurnal Teknologi & Industri Hasil Pertanian Vol 13, No 1 (2008): Jurnal Teknologi & Industri Hasil Pertanian
Publisher : Teknologi Hasil Pertanian Fakultas Pertanian Universitas Lampung

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Abstract

Flavor is an important sensory aspect of the overall acceptability of food. The sensation of flavor is comprised of aroma, taste, which are most affecting the sensation of flavor, texture and psychological perception. Determination of flavor is most emphasized on the constituents flavor rather than the mechanism and metabolic pathway. However, this paper will have a discussion on the flavor formation in fruit and vegetables. Key words: Flavor, flavor chemistry, flavor formation, aroma, taste.
PENERAPAN STRATEGI THINK TALK WRITE (TTW) UNTUK MENINGKATKAN PRESTASI BELAJAR PESERTA DIDIK PADA POKOK BAHASAN KESETIMBANGAN KELARUTAN DI KELAS XI MIA SMA NEGERI 14 PEKANBARU Azwendra, Yosi; Rasmiwetti, Rasmiwetti; Erna, Maria
Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 5: Edisi 2 Juli-Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan

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Abstract: Research was aimed to improve study result of student on solubility and result times solubility subject has been doing in class XI science SMAN 1 Pekanbaru. This research was a form of experiments research with design pretest-posttest. Sample of the research were student of class XI science 3 as experimental class and class XI science 4 as control class. The experimental class was applied TTW learning strategy while the control class using discussion method. Data were analized using t- test. Result from the data analysis showed t count > t table (2,39 > 1,68). It means TTW learning strategy can increase the student learning achievement on topic of solubility equilibrium in class XI science SMAN 14 Pekanbaru with category of increase learning achievment on topic of solubility equilibrium in class XI science is high category.Key Word: study results, problem based learning, solubility and result time solubility
PENERAPAN MODEL PEMBELAJARAN SOMATIS, AUDITORI, VISUAL DAN INTELEKTUAL (SAVI) UNTUK MENINGKATKAN KEMAMPUAN KOMUNIKASI DAN PEMECAHAN MASALAH PESERTA DIDIK DI KELAS XI MIA 1 SMA ISLAM AS SHOFA PADA MATERI KESETIMBANGAN KELARUTAN Syarifah, Syarifah; Erna, Maria; Linda, Roza
Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 5: Edisi 2 Juli-Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan

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Abstract : The purpose of this research is apply model of somatic, auditory, visualization and intellectually to improve student’s communication and problem solving skills on solubility equilibrium topic’s in 2nd grade sains 1 Senior High School Islamic As Shofa. The type of research is classroom action research which includes that is planning, implementation, observation and reflection. The instruments of data collection used is through observation sheet and test. The data analysis techniques by calculating the average percentage of indicators for each activity of communication and problem solving skills observed. Based on the results of the research found that average percentage student’s communication skills in cycle I of 54,25% increase in cycle II of 78,91%. The average percentage student’s problem solving skills in cycle I of 53,60% increase in cycle II of 78,99% and has reached the predetermined success criteria. The results research of SAVI model can improve student’s communication and problem solving skills. This can be seen fromKey Words : SAVI model, communication skill, problem solving skill, solubility equilibrium
PENERAPAN MODEL PEMBELAJARAN AUDITORY INTELLECTUALLY REPETITION (AIR) UNTUK MENINGKATKAN AKTIVITAS DAN KEMANDIRIAN BELAJAR PESERTA DIDIK PADA POKOK BAHASAN KOLOID DI KELAS XI MIA 2 SMA ISLAM AS-SHOFA PEKANBARU Nuzuriah, Nuzuriah; Erna, Maria; Yasmi, Elva
Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 5: Edisi 2 Juli-Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan

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Abstract : This is a classroom action research. This research is an attempt to improve student learning activities in chemistry and independence on class XI MIA 2 SMA Islam As-Shofa Pekanbaru by using learning model auditory intellectually repetition. Student learning activity which is repaired the activity of listening to teacher’s explanation, propose the question, submit answers or opinions, group discussion, and do a task the teacher gives. Student learning independence which is repaired to read the source of the literature independently, dare to express opinions, do their own evaluation and be unyielding in completing the evaluation. This research consisted of two cycles. Each cycle consisted of two meetings that went through four stages of implementation: planning, action, observation, and reflection. The collecting data used observation and test. The analysis data was describ with descriptively by using percentage technique. Based on the results obtained, it can be concluded the using of learning model auditory intellectually repetition can improve the activity and independence of student learning. It can be seen by the improvement of student’s learning activity from 52,5% at the first cycle to 70% at the second cycle, and learning independences from 51,25% at the first cycle to 64,87% at the second cycle.Keyword : Learning model auditory intellectually repetition, activities, learning independence
STRATEGI PEMBELAJARAN KOLABORATIF TIPE PREDICT DISCUSS EXPLAIN OBSERVE DISCUSS EXPLAIN (PDEODE) UNTUK MENINGKATKAN HASIL BELAJAR PESERTA DIDIK PADA MATERI STOIKIOMETRI DI SMA NEGERI 9 PEKANBARU Erna, Maria; Haryati, Sri; Hestivik, Chelsi
Jurnal Inovasi Pendidikan Kimia Vol 13, No 2 (2019): July (2019)
Publisher : Universitas Negeri Semarang

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This study aims to determine the reduce of student misconception by applying collaborative learning strategy type of Predict, Discuss, Explain, Observe, Discuss, Explain (PDEODE) in discourse solubility equilibrium in class XI SMA Negeri 1 Pekanbaru. Instrument that used is three tier multiple choice test by using Certainty of Response Index (CRI). The study was an experiment with randomized control group pretest-posttest. The sample in this research is class XI MIA 9 as experiment class and class X1 MIA 7 as control class which is determined randomly after normality test and a homogeneity test. The experimental class is treated with the application of collaborative learning strategy type of Predict, Discuss, Explain, Observe, Discuss, Explain (PDEODE), while the control class without the application of collaborative learning strategy type of Predict, Discuss, Explain, Observe, Discuss, Explain (PDEODE). Data analysis for hypothesis testing is done using right-t test. Based on the results of data analysis obtained tct = 3,13 and ttable = 1,67 with α = 0,05, dk = 56. tcount > ttable is 3,13 > 1,67 means the application of collaborative learning strategy type of Predict, Discuss, Explain, Observe, Discuss, Explain (PDEODE) can improve student achievement on hydrocarbon subject in class XI SMA Negeri 1 Pekanbaru. The percentage reduction of misconception in the experimental class is 52,42%.
PENERAPAN MODEL PEMBELAJARAN KOOPERATIF THINK PAIR SHARE (TPS) UNTUK MENINGKATKAN PRESTASI BELAJAR SISWA PADA POKOK BAHASA LAJU REAKSI DI KELAS XI IPA SMAN 5 PEKANBARU Novizal, Roni; Erna, Maria; Azmi, Johni
Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 4, No 1 (2017): Wisuda Februari 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan

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Abstract: This study aims to improve student achievement in the subject reaction rate through the implementation of learning model Think Pair Share (TPS) in class XI IPA SMAN 5 Pekanbaru. Type of research is experimental study using pretest-posttest design. Research conducted at SMAN 5 Pekanbaru. Samples of this research is class XI.IA4 as experimental class and the students in the class as a class XI.IA6 control, this sample was randomly selected after tests of normality and homogeneity in both samples. In the process of classroom learning and classroom control experiment using the scientific approach to the curriculum SBC beracuan. Experimental class is the class that was given treatment by using model Think Pair Share (TPS), while the control class is the class that was treated using the usual method implementation discussion. Based on the results of hypothesis testing data analysis obtained t> t table ie 1.83> 1.67, this shows the differences in learning outcomes of students before and after the study material reaction rate with and without the use of learning model Think Pair Share (TPS) in class XI IPA SMAN 5 Pekanbaru.
STUDI KOMPARASI PRESTASI BELAJAR SISWA MENGGUNAKAN MODEL PEMBELAJARAN KOOPERATIF NUMBERED HEADS TOGETHER (NHT) DAN THINK PAIR SHARE (TPS) PADA POKOK BAHASAN STRUKTUR ATOM DAN SISTEM PERIODIK UNSUR DI KELAS XI IPA SMA NEGERI 10 PEKANBARU Sari, Yeni Yulia; Copriady, Jimmi; Erna, Maria
Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 3, No 1 (2016): Wisuda Februari 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan

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Abstract: The aim of research to find out significant differences in student’s achievement and to determine student’s achievement higher between implementation of cooperative learning models NHT and TPS on learning topic of Atomic Structure and Elements of the Periodic System. This is an true experimental research with design Randomized Control Group Pretest-Posttest. Population on this research are all students of class XI IPA SMAN 10 Pekanbaru 2015/2016 academic year consisting of 5 classes. The research sample consisted of 3 classes, XI IPA 1 as the experimental class of NHT, XI IPA 2 as the experimental class of TPS and XI IPA 3 as the control class. Research data analysis using ANOVA one way followed by Scheffe multiple comparison test. Based on the results of data processing by ANOVA one way obtained that Fcount > Ftable is 18,92 > 3,08 with α = 0,05; df JKA = 2 and df JKD = 109. The results of data processing by Scheffe multiple comparison test was obtained the difference between the average experimental class of NHT and TPS exceeded the values Scheffe is 5,6> 4,49 with α = 0,05 and an average experimental class of NHT higher than average experimental class of TPS is 48,96> 43,36. Based on the analysis of data processing concluded that there are significant differences in student’s achievement between implementation of cooperative learning models NHT and TPS. Student’s achievement with implementation of cooperative learning models NHT higher than TPS on learning topic of Atomic Structure and Elements of the Periodic System in class XI IPA SMAN 10 Pekanbaru.Keywords: NHT, TPS, Learning Achievement, Atomic Structure and Elements of the Periodic System
PENGGUNAAN MEDIA PERMAINAN KARTU DOMINO KOLOID UNTUK MENINGKATKAN PRESTASI BELAJAR PESERTA DIDIK DI KELAS XI SMA NEGERI 1 TAPUNG HULU marcella, Selly; Erna, Maria; ', Rini
Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 4, No 1 (2017): Wisuda Februari 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan

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Abstract: The results of the study indicate that the use of colloid domino card game media can improving students learning achievement in class XI SMA Negeri 1 Tapung Hulu. Forms of this research was experimental research with radomized design of control group pretest-posttest. The population of this study were all students in class XI MIA SMA Negeri 1 Tapung Hulu. After being tested for normality and homogeneity tests, it determined the sample of the study were students of class XI MIA4 as an experimental class and students of class X1 MIA3 as the control class. Technique that used to data analysis was t-test with the criteria that the data processed in normal distribution. Based on the results of data analysis test, we obtained tcount>ttable is 3.38> 1.67, it meant that use of colloid domino card game media could improved learning achievement in the class XI SMA Negeri 1 Tapung Hulu. The category improvement of student achievement at experiment class was high category with a value of N-gain 0.71 while the control class included in the medium category with a value of N-gain of 0.60.Key Words: Learning Achievement, Colloid Domino Card Game
Co-Authors ', Abdullah ', Erviyenni ', Lenni ', Nur Aini ', Rasmiwetti ', Rini ', Ristiana Abdullah Abdullah Adelia, Dini Admin Alif Aisah, Attika Nur Aisyah Aisyah Andi Dahliaty Anty Ummiyati Aprillia Dyah Suhestry Ardi, Dinda Melissa AS, suharyono Asha Aunaya La Assqiya Assqiya, Asha Aunaya La Azwendra, Yosi Baehaqi Bagus Wahyu Kuncoro Betty Holiwarni Cahyani, Atika Dwi Dedi Futra Dewi Agustina Iryani, Dewi Agustina DEWI SARTIKA DEWI SARTIKA Dewi, Pitri Rahma Dyah Koesoemawardani Dyah Koesoemawardani Dyah Putri Larassati Elva Yasmi Elva Yasmi Amran, Elva Yasmi Emriadi - Erdi Suroso Erviyenni Erviyenni Erviyenni, Erviyenni Ety Testiaty Fauzi, Fajrina Firanti, Feyges Frilla Fitriah, Nafiatul Fitriani, Wahyu Fitriatul Hasanah, Fitriatul Hadi Prayitno Hadi Prayitno, Hadi Hardiani, Vira Hasanah, Asqiatul Hasnah Hasnah Helmy Hidayat, Helmy Herdiana, Novita Herdini , Herdini Hestivik, Chelsi Ida Ayu Putu Sri Widnyani Ika, Risqa Putri Indraningtyas, Lathifa Irnov, Masithah Jimmi Copriady Johni Azmi Kuncoro, Bagus Wahyu Lenny Anwar Lisa Lestari Maharani, Ketut Oka marcella, Selly Marlisa, Lani Melatiningsih, Atri Mohd Jain Noordin Murhadi Murhadi Mursidin . Nadira, Syarifa Ningtias, Arpi Ayu Noer, Asmadi M. Novizal, Roni Nurbaiti Nuzuriah, Nuzuriah Oskar M. Manik Otik Nawansih Paramastuti, Lujeng Pratiwi, Dini Eka Putri Adita Wulandari Putri, Bella Listriani R. Usman Rery Rahmah, Amelia Kurnia Rahmatya, Okma Ramadani, Ramadani Rasmiwetti Rasmiwetti, Rasmiwetti RIBUT SUGIHARTO Rini Astuti RINI RINI Riska Riska Roza Linda Sahara, Nur Aini Samsu Udayana Nurdin Samsul Rizal Saputri, Agustina Eka Sri Haryati Sri Hayati, Sri Sri Hidayati Sri Hidayati Sri Setyani, Sri Sri Waluyo suharyono AS Suharyono Suharyono Suhestry, Aprillia Dyah Sukrisno, Sukrisno Susilawati Susilawati, Susilawati Sussi Astuti Syahrina Irya, Syahrina Syamsiana, Annisa Syarifah Syarifah, Syarifah Syukri Arief Tanto Pratondo Utomo Teguh Endaryanto Thaliarinanta, Angela Saraz Ummiyati, Anty Wildan Nur, Aditya Winanti, Diki Danar Tri Wisnu Satyajaya Yeni Yulia Sari, Yeni Yulia Yum Eryanti Yunelda, Ressi Yusup, Maulid Wahid