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All Journal Jurnal Periodic Jurnal Fisika Unand Jurnal Tadris Kimiya Jurnal Penelitian Pendidikan IPA (JPPIPA) Pelita Eksakta Edukimia Entalpi Pendidikan Kimia Jurnal Kependudukan dan Pembangunan Lingkungan (JKPL) Ranah Research : Journal of Multidisciplinary Research and Development

Ulianas, Alizar

Universitas Negeri Padang

Author-ID : 2756480

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Transportation Other

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Classroom Action Research (CAR) Guidance and Article Writing Techniques for Chemistry Teachers in Limapuluh Kota District High School Alizar Ulianas
Pelita Eksakta Vol 2 No 1 (2019): Pelita Eksakta Vol. 2 No. 1
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol2-iss1/49

Classroom action research (CAR) guidance and related material and supporting PTK activities have been carried out. This activity was attended by 20 participants from high school chemistry teacher teachers in Limapuluh Kota District. This activity needs to be carried out to improve the quality of learning for teachers and find solutions to learning problems encountered in the classroom. In addition, this activity is also to help teachers fulfill the mandate of Menpan No. 84/1993 dated December 24, 1993, which was amended to become Minister of State Regulation PAN and RB no. 16 of 2009 concerning teacher functional positions and credit numbers as one of the elements of professional development in the form of research including classroom action research. This activity has been carried out by analyzing the need for guidance material by the teacher and their level of understanding of the material delivered after carrying out the activities. The results of the analysis of the need for the material of this activity were held indicated that 100% of the total participants stated that it was necessary and very necessary. While the results of the participant's understanding of the activity material were 74.29% to 93% of participants expressed understanding and were very understanding. From this analysis it can be concluded that this activity is beneficial for teachers to carry out PTK and write articles on PTK results.

Enhancement of Teacher Knowledge in Making ICT-Based Chemistry Learning Media with emphasis on Three Levels of Representation minda - azhar; Alizar - Ulianas; Miftahul - Khair; Hutdia Putri M; Natia Afriana S; zulhendra - Zulhendra
Pelita Eksakta Vol 2 No 1 (2019): Pelita Eksakta Vol. 2 No. 1
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol2-iss1/40

Abstract - The use of three levels of chemical representation and interconnection is needed to understand the chemical concepts as a whole. The purpose of service activities is to increase teacher knowledge in making ICT-based chemical learning media with emphasis on three level representation. The solution given is giving training to the teacher. In this training, were used lecture and demonstration methods and practices. The results of the service activities can improve the knowledge and skills of chemistry teachers using standard general chemistry e-books and chemistry learning videos on websites on the internet. This service activity can improve the knowledge and skills of chemistry teachers to integrate these learning resources for the manufacture of ICT-based chemistry learning media with an emphasis on interconnecting of three-levels representation. This service activity also increases teacher knowledge about mental models and how to measure them.

Guidance on Writing Proposals and Carrying Out Classroom Action Research (PTK) and Making PTK Reports in Article Form For High School Chemistry Teachers in Bukittinggi City Alizar Ulianas; Minda Azhar; Eka Yusmaita; Miftahul Khair; Yanti Fitria; Hesty Parbuntari; Watin Dehistora; Yulia Mona Liza
Pelita Eksakta Vol 3 No 2 (2020): Pelita Eksakta Vol. 3 No. 2
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol3-iss2/122

Penelitian ini bertujuan untuk pengabdian kepada masyarakat dalam rangka bimbingan menulis proposal dan melaksanakan penelitian tindakan kelas (PTK) serta membuat laporan PTK dalam bentuk artikel bagi guru-guru kimia agar dapat dipublikasikan pada jurnal Nasioanl atau Internasional. Penelitian ini dilakukan di SMAN 1 Kota Bukittinggi selama 2 hari dengan jumlah peserta 13 orang guru kimia. Dalam pelaksanaan bimbingan ini dilakukan 4 metode. Pertama, metode ceramah ketika penyampaian materi; kedua, metode tanya jawab; ketiga, praktik pelaksanaan didampingi oleh tim ahli; keempat, diskusi untuk mengidentifikasi keberhasilan peserta. Sebelum dan sesudah kegiatan peserta diberikan angket mengenai keperluan peserta terhadap materi serta pemahaman peserta terhadap materi. Dalam kegiatan ini peserta dapat mengetahui permasalahan dikelas dan juga cara penelusuran artikel PTK secara online, metode dan Teknik penulisan artikel hasil PTK, teknik submit artikel hasil PTK kepada jurnal Nasional, serta penggunaan program Mendeley untuk mempermudah penulisan sitasi dan daftar pustaka pada artikel. Hasil pemahaman peserta sebelum penyampain materi dengan setelah penyampaian materi mengalami kenaikan yang signifikan yang ditandai dengan kenaikan jumlah pesrta yang paham. Dengan adanya bimbingan penulisan artikel dan penyusunan PTK ini memberikan motivasi kepada guru untuk membuat karya ilmiah berupa artikel hingga dapat dipublikasi.

Rancang Bangun Alat Ukur Glukosa Untuk Darah Manusia Menggunakan Sensor Elektrokimia Berbasis Glassy Carbon Electrode (GCE) dengan Metode Voltametri Widya Janatul Putri; Yulkifli Yulkifli; Alizar Alizar; Ilyas Muhammad Isa
Jurnal Fisika Unand Vol 10, No 3 (2021)
Publisher : Universitas Andalas

Sensor elektrokimia merupakan salah satu jenis sensor yang digunakan pada perancangan alat ukur glukosa untuk menentukan kadar glukosa pada darah manusia. Sensor elektrokimia dibuat dengan menggunakan sintesis kimia anorganik sehingga menghasilkan material sensor yang dapat merubah peristiwa kimia menjadi besaran listrik. Pada penelitian ini dilakukan analisis hasil uji respon beberapa jenis sensor modifikasi terhadap glukosa dalam darah dengan metode voltametri. Elektroda yang digunakan adalag Glassy Carbon Electrode (GCE) Data uji respon meliputi limit deteksi, linier range dan sensitivitas. Sensor glukosa memiliki karakter minimun dimana kualitas sensor akan semakin baik jika sensitivitas tinggi, limit deteksi rendah dan linier range yang lebar. Senyawa kimia yang digunakan meliputi Cu, Ni, dan Pt yang telah melalui proses sintesis untuk menjadi material sensor.

Pengaruh Model CLIS Terhadap Hasil Belajar Siswa pada Materi Larutan Elektrolit dan Non Elektrolit Annisa Aulia; Alizar Ulianas
Edukimia Vol 2, No 3 (2020): Edukimia - Vol. 02, Issue 03
Publisher : Universitas Negeri Padang

An experimental research using the Children Learning In Science (CLIS) model has been conducted to figure out learning outcome. The research sample involved two classes with different learning model. The first class model used the CLIS model as experimental class while the second class model used the conventional model as a control class. Multiple choice questions were the research instrument to measure students achievement in cognitive aspect. The results showed that the average of the experimental class was 85,29 and the control class was 78,43. The study showed that the CLIS model has positive and significant influence on the student learning outcomes.

PENGARUH MODUL KESETIMBANGAN KIMIA BERBASIS INKUIRI TERSTRUKTUR DENGAN TIGA LEVEL REPRESENTASI TERHADAP MODEL MENTAL SISWA Nurhasanah Nurhasanah; Minda Azhar; Alizar Alizar
Jurnal Tadris Kimiya Vol 7, No 1 (2022)
Publisher : Department of Chemistry Education, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/jtk.v7i1.12844

Students find it difficult to understand the material of chemical equilibrium. One of the efforts to overcome these student difficulties is to use a structured inquiry-based module equipped with three levels of representation. This study aims to determine the effect of using the module on students' mental models. This study used a posttest-only control design conducted in two schools. In the design, each school had two groups, namely the experimental group and the control group. The two-tier diagnostic test instrument was used to test the mental models of 134 students. The hypothesis was tested by ttest using the SPSS 16.0 program. The results of the ttest for each school were 0.011 at SMAN 3 Padang and 0.008 at SMAN 13 Padang, with a 0.05 significance level. The results of the t-test showed that the use of the module affected students' mental models.

Pengembangan Lembar Kerja Peserta Didik Elektronik (e-LKPD) Larutan Elektrolit dan Nonelekrtolit berbasis Project Based Learning (PjBL) terhadap Hasil Belajar Peserta Didik kelas X SMA/MA Rosi Efliana; Hardeli Hardeli; Alizar Alizar; Yerimadesi Yerimadesi
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 3 (2022): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i3.1629

The purpose of this research is to develop teaching materials in the form of e-SW electrolyte and nonelectrolyte solutions based on PjBL for class X SMA/MA students. The method used is the Plom Model development method with stages the Preliminary Research, Prototyping Phase, and Assessment Phase. The limitation of this research is only small group research. The assessment of this development is valid and practical. The elements that are validated are content, serving, language, and graphical components. The practical element is seen in the questionnaire conducted by 3 students and 2 teachers. The results of this study are teaching materials that meet valid and practical criteria, so they can be used for learning electrolyte and nonelectrolyte solutions for class X SMA/MA students

Degradation of Methyl Green Dyes with ZnO Catalyst using the Photosonolysis Method Muhammad Gani Ariski; Hary Sanjaya; Alizar Alizar; Deski Beri; Yohandri Yohandri
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 2 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Textile and dyestuff industrial dye waste remain the most difficult wastewater to treat due to the complex aromatic molecular structure of industrial dyes, which are very difficult to decompose. This research was conducted on the degradation of methyl green using the photosonolysis method. The purpose of this study was to determine the optimum time and amount of ZnO used in degrading methyl green dye. The results of the percentage degradation were obtained from the absorbance value measured using a UV-Vis Spectrophotometer. (λmax) Methyl green obtained from the measurement of a UV-Vis spectrophotometer was 640 nm. The results showed that the optimum irradiation and sonication time to degrade methyl green was 60 minutes with a degradation percentage of 92.77%. For the effect of mass variation of ZnO catalyst obtained the optimum mass of 0.05 grams with a degradation percentage of 96.38%.

Analisis Miskonsepsi pada Materi Hidrokarbon Menggunakan Instrumen Two-Tier Diagnostic Test di SMA Pertiwi 1 Padang Yulia Mona Liza; Alizar Alizar; Zonalia Fitriza; Iryani Iryani
Entalpi Pendidikan Kimia Vol 2 No 2 (2021)
Publisher : Universitas Negeri Padang

The concept is an understanding of an individual or a group of people who is expressed in the form of a meaning that produces knowledge. Misconceptions of students that appear continuously will interfere with the formation of scientific conceptions and can affect student learning outcomes. Therefore it is necessary to analyze the misconceptions of students. One of the diagnostic tests that can be used is a two-tier multiple choice test or known as a two-tier multiple choice, the first level is the question being tested while the second level contains the reasons for the answer to the first level. This study aims to analyze misconceptions and determine the percentage of students' misconceptions on hydrocarbon material using descriptive methods. The subjects were 27 students of class XI IPA 2 in SMA Pertiwi 1 Padang. The research instrument was a Two Tier Multiple Choice diagnostic test by dividing students' conceptual understanding into the categories of conceptual understanding, misconception, and conceptual misunderstanding. The results showed that the percentage of students' conceptual understanding in the concept understanding category was 31%, misconception was 36%, and did not understand the concept by 34% on hydrocarbon material. Students' misconceptions on hydrocarbon material at SMA Pertiwi 1 Padang were categorized as moderate. Konsep merupakan pemahaman individu atau sekelompok orang yang diungkapkan dalam bentuk pengertian yang menghasilkan suatu pengetahuan. Miskonsepsi peserta didik yang muncul terus menerus akan mengganggu pembentukan konsepsi ilmiah dan dapat mempengaruhi hasil belajar peserta didik. Oleh sebab itu perlu dilakukan analisis miskonsepsi peserta didik. Salah satu tes diagnostik yang dapat digunakan adalah tes pilihan ganda bertingkat dua atau dikenal sebagai two-tier multiple choice, tingkat pertama merupakan pertanyaan yang diujikan sedangkan tingkat kedua berisi alasan atas jawaban pada tingkat pertama. Penelitian bertujuan untuk menganalisis miskonsepsi dan menentukan persentase miskonsepsi peserta didik pada materi hidrokarbon dengan metode deskriptif. Subjek penelitian ini adalah peserta didik kelas XI IPA 2 di SMA Pertiwi 1 Padang yang berjumlah 27 orang. Instrumen penelitian berupa tes diagnostik Two Tier Multiple Choice dengan membagi pemahaman konsep peserta didik dalam kategori paham konsep, miskonsepsi, dan tidak paham konsep. Hasil penelitian menunjukkan bahwa persentase pemahaman konsep peserta didik pada kategori paham konsep sebesar 31%, miskonsepsi sebesar 36%, dan tidak paham konsep sebesar 34% pada materi hidrokarbon. Miskonsepsi peserta didik pada materi hidrokarbon di SMA Pertiwi 1 Padang termasuk kriteria sedang.

Pengaruh Waktu Perendaman Terhadap Penyerapan Asam Urat Menggunakan Membran Molecularly Imprinted Conducting Polimers (MICPs) Nilu Gussarsi; Budhi Oktavia; Alizar Ulianas
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.116991

Abstract – Molecularly Imprinted Conducting Polymers (MICPs) are polymers that have cavities that can conduct electricity. Cavities in the polymer result from template removal. The method used for the synthesis of MICPs membrane is the photopolymerization method using Ultra-Violet light. Determination of uric acid levels in solution can be analyzed using a UV-Vis spectrophotometer and in blood using an easy touch. Meanwhile, to determine the electrical conductivity using a four point probe (FPP). Based on the research, it was found that the uric acid MICPs membrane had optimum absorption at a contact time of 24 hours, with an absorption capacity of 0.532 mg/g. The uric acid MICPs membrane can absorb uric acid molecules in human blood with an absorption capacity of 0.57 mg/g according to blood pH by easy touch testing. The results of this study indicate that the MICPs membrane can absorb uric acid both in solution and in blood.

Co-Authors Annisa Aulia Budhi Oktavia Budhi Oktavia Christina Lydia Makmur Deski Beri Elva Laila Faiza Qurrata Aini Fitria, Yanti Hardeli Hardeli Hary Sanjaya Hesty Parbuntari Hutdia Putri M Ilyas Muhammad Isa Indang Dewata Iryani Iryani Kiky Vebrielna Sari Mawardi Mawardi Miftahul - Khair Miftahul Khair minda - azhar Minda Azhar Minda Azhar Muhammad Gani Ariski Natia Afriana S Nilu Gussarsi Nurhasanah Nurhasanah Reza Akmar Rosi Efliana Watin Dehistora Widya Janatul Putri Winda Annisa Suryanti Yerimadesi Yerimadesi Yohandri Yulia Mona Liza Yulkifli Yulkifli Yusmaita, Eka Zonalia Fitriza zulhendra - Zulhendra

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