Article Per Year (5 Year)
p-Index From 2021 - 2026
4.04
P-Index
This Author published in this journals
All Journal Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) Jurnal Pendidikan Kimia Universitas Riau Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Indonesian Journal of Chemical Science and Technology CHEDS: Journal of Chemistry, Education, and Science Educenter: Jurnal Ilmiah Pendidikan Journal Of Human And Education (JAHE) Jurna Beta Kimia EDUCENTER JURNAL PENDIDIKAN
Jasmidi Jasmidi
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Faculty of Education Medan
Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Social Sciences Other

Published : 31 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 31 Documents
Search

 1   2   3   4 
PERBANDINGAN HASIL BELAJAR SISWA YANG DIAJAR DENGAN MODEL PEMBELAJARAN KOOPERATIF TIPE NHT (NUMBERED HEAD TOGETHER) DENGAN MEDIA POWER POINT DAN MEDIA KARTU KERJA PADA POKOK BAHASAN STRUKTUR ATOM Padang, Nurliana; Jasmidi, Jasmidi; Siregar, Wilda Wani
CHEDS: Journal of Chemistry, Education, and Science Vol 2, No 1 (2018)
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (435.598 KB) | DOI: 10.30743/cheds.v2i1.697

Abstract

Telah dilakukan penelitian tentang perbandingan hasil belajar siswa yang diajar dengan model pembelajaran kooperatif tipe NHT (Numbered Heads Together) dengan media power point dan tipe NHT dengan media kartu kerja pada materi pokok Struktur Atom di mana penelitian ini bertujuan untuk mengetahui apakah ada perbedaan hasil belajar siswa yang diajarkan dengan model pembelajaran kooperatif tipe NHT dengan media power point dan yang diajar dengan model pembelajaran kooperatif tipe NHT dengan media kartu kerja pada materi pokok Struktur Atom di kelas X SMA Tamansiswa  Medan. Sampel penelitian yang digunakan dalam penelitian ini adalah 2 kelas yang masing-masing terdiri dari 30 siswa. Di mana XA menjadi kelas eksperimen I dan XB menjadi kelas eksperimen II. Rata-rata hasil belajar kelas eksperimen I adalah 78,67 sedangkan nilai rata-rata hasil belajar kelas eksperimen II adalah 73,67. Dari hasil perhitungan statistik yang menggunakan uji t dua pihak pada taraf signifikansi α = 0,05 diperoleh  yaitu . Hasil yang diperoleh menyatakan bahwa Ha ditolak dan Ho diterima atau tidak ada perbedaan hasil belajar.Kata kunci: Kooperatif Tipe NHT (Numbered Heads Together), Media Power Point, Media Kartu Kerja, Struktur Atom. 
Pengaruh penggunaan video pembelajaran berbasis Problem Based Learning (PBI) terhadap hasil belajar siswa kelas XI SMA pada materi termokimia Sintia, Melly; Jasmidi, Jasmidi
Educenter : Jurnal Ilmiah Pendidikan Vol. 1 No. 3 (2022): Educenter : Jurnal Ilmiah Pendidikan
Publisher : ARKA INSTITUTE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55904/educenter.v1i3.70

Abstract

Problem Based Learning (PBL) learning model is a set of learning activities that emphasize the process of solving problems faced scientifically. The use of video media can help students' learning process and will have a big impact on the learning outcomes of thermochemical material because almost everyone, from children to the elderly, now has a smartphone. In addition to learning videos, powerpoint is one of the learning media that can help students who have learning difficulties. The purpose of this study was to investigate whether the thermochemistry learning outcomes taught using PBL-based learning videos were higher than the thermochemistry learning outcomes taught using PBL- based PPT. This study involved the experimental class I and the experimental class II. From the results of the study, the average pre-test for the experimental class I was 41,95 and the experimental class II was 41.44. After being treated with learning in both experimental classes, post-test was then recommended to determine learning outcomes, the post-test average of experimental class I was 83.14 and experimental class II was 78.44. The results showed that the experimental class I which was taught by learning video media and the PBL model was higher than the learning outcomes of the experimental class II which was taught by the powerpoint media and the PBL model. It can be concluded that the use of instructional video media, learning outcomes are higher than the use of powerpoint media.
The Influence of Problem Based Learning and Discovery Learning Models Assisted by Learning Video Media on Student Learning Results and Activities on Redox Reaction Harahap, Aisyah Sari Dewi; Jasmidi, Jasmidi
Jurnal Pendidikan dan Pembelajaran Kimia Vol 13, No 3 (2024): Jurnal Pendidikan dan Pembelajaran Kimia
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to analyze the differences in learning outcomes and student engagement between the Problem Based Learning (PBL) model and the Discovery Learning (DL) model supported by learning videos, as well as to identify the relationship between these factors in the context of redox reactions at MAS Muallimin Univa Medan. The sample consists of two classes randomly selected from the Class X MIA population: the PBL class (X MIA 2) and the DL class (X MIA 3). The research instruments included a multiple-choice test with 20 valid and reliable questions to assess learning outcomes and an observation sheet to evaluate student engagement. Data were analyzed using independent sample t-tests. Results indicated that the PBL class had lower scores in both engagement and learning outcomes compared to the DL class. Statistical analysis revealed significant differences in engagement and learning outcomes (α < 0.05), with a positive correlation between student engagement and learning outcomes. The conclusion of this study is that there are differences in learning outcomes and engagement between the two models, as well as a significant relationship between student activity and learning success, with contribution rates for engagement reaching 64.3% and 24.9%.Keywords: Learning Outcomes, Learning Activities, Problem Based Learning, Discovery Learning, Learning Videos¸ Redox Reactions.DOI: 10.23960/jppk.v13.i3.30701
Adsorption Equilibrium Properties of Zn(II) on Activated Carbon Composite of Derived Empty Palm Oil Fruit Bunches with Metal Organic Frameworks Cu(TAC) Jasmidi, Jasmidi; Zubir, Moondra; Selly, Rini; Pulungan, Ahmad Shafwan; Faradilla, Putri; Rahmah, Siti; Tanjung, Amar Lohot
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 7 No. 2 (2024): JULY 2024
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v7i2.62250

Abstract

This study aims to determine the adsorption equilibrium of the activated carbon of empty palm oil fruit bunches and KA-Cu(TAC) on Zn(II). Oil palm empty fruit bunches are used as a bio-sorbent in making carbon at a temperature of 5000 C, the resulting carbon is activated using H3PO4 and modified into a composite with metal organic frameworks of Cu metal and terephthalic acid. MOFs and KA-Cu(TAC) composites were produced by reflux method. Activated carbon, MOFS and KA-Cu(TAC) were characterized using XRD. The adsorption process of Zn(II) metal was analyzed using AAS and determined the optimum conditions with various concentrations to determine the adsorption equilibrium. XRD characterization results show that activated carbon has an amorphous structure, while MOFs Cu(TAC) and KA-Cu(TAC) have a crystalline structure. The optimum condition of activated carbon and KA-Cu(TAC) at a concentration of 180 ppm with the appropriate adsorption isotherm model is the Langmuir isotherm.
Adsorption Properties of Beta Carotene from Activated Carbon Derivatives of Oil Palm Empty Bunches Jasmidi, Jasmidi; Zubir, Moondra; Selly, Rini; Faradilla, Putri; Rahmah, Siti
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 7 No. 1 (2024): JANUARY 2024
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v7i1.62260

Abstract

This research aims to determine the adsorption ability of activated carbon and Fe-Cu modified activated carbon in the β-carotene adsorption process on Crude Palm Oil (CPO). Empty Palm Oil Bunches (TKKS) are used as a bio-sorbent for carbon production at a temperature of 500 ºC. The synthesized carbon was activated using H3PO4 and modified with Fe-Cu metal. CPO quality parameters such as Free Fatty Acids and Peroxide Number were analyzed to see the effect of adsorption on CPO quality. The β-carotene level in the CPO sample used is 472.1 ppm. The optimum conditions for using activated carbon in the β-carotene adsorption process are a mass variation of 8 grams with the β-carotene remaining after adsorption being 432.4 ppm, whereas by using Magnetic Activated Carbon, CPO β-carotene after adsorption remains at 426.1 ppm. Meanwhile, increasing the adsorption time causes the absorption of β-carotene to become greater. By using Activated Carbon the remaining β-carotene is 300.1 ppm after 120 minutes, whereas by using Magnetic Activated Carbon the optimum absorption time is faster and the amount of β-carotene absorbed is greater. The remaining βcarotene after absorption with Magnetic Activated Carbon was 288.7 after 90 minutes of adsorption. Apart from being able to absorb β-carotene, magnetic activated carbon is also better at reducing FFA and PV levels from CPO.
Synthesis and Characterization of Activated Carbon/Alginate/Nanocellulose-Cu Composites Syahirah, Atikah Nur; Jasmidi, Jasmidi; Muchtar, Zainuddin; Rahmah, Siti; Pulungan, Ahmad Shafwan; Zubir, Moondra; Selly, Rini; Faradilla, Putri
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 6 No. 2 (2023): JULY 2023
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v6i2.62303

Abstract

OPEFB is one source of natural fiber-based composites which have the potential to become activated carbon and nanocellulose. This study aims to synthesize and characterize the activated carbon/alginate/nanocellulose-Cu composite. The characterization used in this study is FTIR and PSA. The synthesis of activated carbon/alginate/nanocellulose-Cu composites began with a process of carbonization and activation with H3PO4 to produce Activated Carbon. Followed by a bleaching process with NaClO2 and a delignification process with Na2SO3 and NaOH to produce Nanocellulose. Alginate using commercial alginate. Furthermore, the three ingredients were mixed until homogeneous and put into a 0.1M CuSO4 solution to produce beads. The results of the characterization of characterization of PSA Nanocellulose obtained a particle size of 41.05 nm and the result of FTIR characterization on the activated carbon/alginate/nanocellulose-Cu composite contained the functional group OH group, triple C bond from stretching alkyne, C=C aromatic group, C-H alkane group, C-O group, the P=O stretching vibration of the P-O-C group and the alcohol OH group expressing the active carbon; there are functional groups of hydroxyl (OH), carboxyl, carbonyl, and C-O-C and “COOH bonds which represent alginate and there are OH functional groups, stretching C-H bonds, C-O stretching, stretching C-C, and β- glucosidic bonds between glucose units which indicate nanocellulose.
Adsorption of Heavy Metal Cu(II) in Wastewater Using Adsorbents from Empty Oil Palm Bunches Fitri, Indah; Nasution, Hafni Indriati; Jasmidi, Jasmidi; Zubir, Moondra; Rahmah, Siti; Selly, Rini; Faradilla, Putri
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 6 No. 2 (2023): JULY 2023
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v6i2.62304

Abstract

Heavy metal pollution has increased with increasing industrialization. To overcome this contamination, carried out by using the adsorption method. The adsorbents used are activated carbon and porous polymer composite carbon Cu(TAC). in liquid waste, one of which is Cu metal. This is evidenced by the existence of data showing the efficiency of activated carbon and porous polymer composite carbon Cu(TAC) above 90%. In addition, activated carbon and porous polymer composite carbon Cu(TAC) have an adsorption isotherm equation that is suitable for Cu(II) adsorption is the Langmuir isotherm with linear regression values of 0.9045 and 0.8912.
Synthesis of Cu-(TAC) Composite with Oil Palm Empty Fruit Bunch Waste Activated Carbon Through the Adsorption Mechanism of βCarotene Sari, Lidia Mutia; Jasmidi, Jasmidi; Nasution, Hafni Indriati; Zubir, Moondra; Rahmah, Siti; Selly, Rini; Faradilla, Putri
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 6 No. 2 (2023): JULY 2023
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v6i2.62305

Abstract

This study aims to determine the adsorption and desorption abilities of activated carbon and Cu-(TAC) composites in the β-carotene adsorption process on Crude Palm Oil (CPO). Oil Palm Empty Fruit Bunches (EFB) are used as activated carbon and modified with MOFs Cu-(TAC). Activated carbon and Cu-(TAC) composites were characterized by XRD, SEM-EDX, and BET. The concentration of β-carotene absorbed during the adsorption process was analyzed using a UV-Vis spectrophotometer. The variations used to determine the optimum conditions for absorption of β-carotene were the mass variation of the adsorbent and the variation in the contact time between the adsorbent and adsorbate. The results of the characterization of activated carbon showed a sharp absorption in the presence of O-H, C-H and C-O groups indicating the presence of cellulose. Activated carbon is amorphous and the Cu-(TAC) composite has a crystal structure and its pore size is mesoporous. The optimum conditions for the use of activated carbon for β-carotene adsorption were the mass variation of 8 grams with 0.495 ppm of β-carotene and contact time at 120 minutes with 2.605 ppm of β-carotene. The optimum condition of the Cu-(TAC) composite in the β-carotene adsorption process was at 4 gram mass variation with 1.026 ppm β-carotene content and optimum contact time at 60 minutes with 6.384 ppm β-carotene content. The ability of desorption can be seen from the percentage of desorption showing activated carbon in the 150th minute with 96.252% while in the Cu-(TAC) composite in the 30th minute with 88.188%.
Synthesis and Characterization of Activated Carbon/Alginate-Cu Composites Sari, Maya Novita; Muchtar, Zainuddin; Jasmidi, Jasmidi; Rahmah, Siti; Pulungan, Ahmad Shafwan; Zubir, Moondra; Selly, Rini; Faradilla, Putri
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 6 No. 2 (2023): JULY 2023
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v6i2.62306

Abstract

OPEFB is one source of natural fiber-based composites which have the potential to become activated carbon. This study aims to synthesize and characterize the activated carbon/alginate -Cu composite. The characterization used in this study is FTIR. The results of this study The synthesis of activated carbon/alginate -Cu composites began with a process of carbonization and activation with H3PO4 to produce Activated Carbon. Alginate using commercial alginate. Furthermore, the three ingredients were mixed until homogeneous and put into a 0.1M CuSO4 solution to produce beads. The characterization of FTIR characterization on the activated carbon/alginate-Cu composite contained the functional group OH group, triple C bond from stretching alkyne, C=C aromatic group, C-H alkane group, C-O group , the P=O stretching vibration of the P-O-C group and the alcohol OH group expressing the active carbon; there are functional groups of hydroxyl (OH), carboxyl, carbonyl, and C-O-C and “COOH bonds which represent alginate and there are OH functional groups, stretching C-H bonds, C-O stretching, stretching C-C. The KALg Cu13 sample had a peak at a wavelength of 2838.79 Cm-1 Where the four samples show the presence of C≡N groups
Synthesis And Characterization of Activated Carbon/Alginate/Nanocellulose-Fe Composite as Slow Release Fertilizer Cahyati, Riska; Syahirah, Atikah nur; Rahmah, Siti; Muchtar, Zainuddin; Jasmidi, Jasmidi; Pulungan, Ahmad Shafwan; Zubir, Moondra; Selly, Rini; Faradilla, Putri
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 6 No. 2 (2023): JULY 2023
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v6i2.62307

Abstract

Fe deficiency in plants results in yellowing of leaves on plants and also reduces the quality of fruit produced. Fe deficiency in plants can be treated by applying slow release fertilizer which will release the nutrients in the fertilizer slowly according to plant needs so that there will be no problem of deficiency or excess of Fe. Activated Carbon/Alginate/Nanocellulose-Fe Composite can be used as slow release fertilizer because this composite releases Fe slowly with citric acid medium and tested with AAS. The functional groups in the Activated Carbon/Alginate/Nanocellulose-Fe Composite showed no disappearance of the functional groups belonging to activated carbon, alginate or nanocellulose so that it can be said that these three components were successfully made into composites and can be carriers of nutrients in micro-fertilizers.
Co-Authors AA Sudharmawan, AA Ajat Sudrajat Ashar Hasairin Ayi Darmana, Ayi Cahyati, Riska Elfany, Yuna Faradilla, Putri Fitri, Indah Freddy Tua Musa Panggabean Harahap, Aisyah Sari Dewi Hutagaol, Rahul Iis Siti Jahro Jabal Ahsan Jamalum Purba Juniar, Anna  Juwitaningsih, Tita M., Zainuddin Manullang, Ribka Sopia Martina Restuati Maulina, Rissah Mayang Sari Muhammad Luthfi Muhammad Nizam Nababan, Haryati Nasution, Hafni Indriati Padang, Nurliana Pasar Maulim Silitonga Pulungan, Ahmad Shafwan Purba, Rica Ariani Rabiah Afifah Daulay Rachmi, Naila Syabina Ratna Sari Dewi Ratu Evina Dibyantini Rini Selly, Rini Ritonga, Dina Arfah Sari, Lidia Mutia Sari, Maya Novita Sihombing, Natasya Christie Simarmata, Tiomelda Simson Tarigan Sinaga, Anggian Nurjelita Sintia, Melly Siregar, Muhammad Isa Siregar, Wilda Wani Sri Adelila Sari Syahirah, Atikah Nur Tanjung, Amar Lohot Widya, Risa Dwy Yusfiani, Marnida Zainuddin Muchtar Zubir, Moondra Zubir, Moondra