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All Journal QUANTUM: Jurnal Inovasi Pendidikan Sains Jurnal Tadris Kimiya Jurnal Penelitian Pendidikan Kimia Orbital: Jurnal Pendidikan Kimia Sains Natural: Journal of Biology and Chemistry Jurnal Airaha
Murtihapsari Murtihapsari
Department Of Chemistry Education, Faculty Of Teacher Training And Education, Universitas Papua, Jl. Gunung Salju Amban, Manokwari, 98312
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Physics Social Sciences

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MODEL ISOTERM FREUNDLICH DAN LANGMUIR OLEH ADSORBEN ARANG AKTIF BAMBU ANDONG (G. verticillata (Wild) Munro) DAN BAMBU ATER (G. atter (Hassk) Kurz ex Munro) Murtihapsari Murtihapsari; Bertha Mangallo; Dini Dwi Handyani
JURNAL SAINS NATURAL Vol. 2 No. 1 (2012): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (199.531 KB) | DOI: 10.31938/jsn.v2i1.31

Abstract

Freundlich and Langmuir Isotherms Model by Active Chorcoal Adsorbent Bamboo Andong  (G. verticillata (Wild) Munro) and Bamboo Ater (G. atter (Hassk) Kurz ex Munro)          Diazinon insecticide adsorption by two types of adsorbent, namely activated charcoal bamboo andong (G. verticillata (Wild) Munro) and bamboo ater (G. atter (Hassk) Kurzex Munro) at optimum conditions determined the maximum adsorption capacity of both types of adsorbent. Data analysison the effect of concentration on the adsorption capacity was used Langmuir and Freundlich isotherms equation. It was obtained. That  the curve of adsorption isotherms of the Langmuir isotherm better modeled with linear regression coefficients were relatively more approach 1 is R2 = 0,996 for both types of adsorbents. Langmuir isotherm equation obtained from adsorpsi maximum capacity of activated charcoal bamboo andong (G. verticillata (Wild) Munro) of  4.630 mg/g (1,433.10-5 mol/g) with K = 0,332 (Kmol/L)-1 and Eads at -2,750 kJ/mol, while the activated charcoal bamboo ater (G. atter (Hassk) Kurzex Munro) produce the maximum adsorption capacity of 1,786 mg/g (5,868.10-6 mol/g) with K = 0,202 (Kmol/L)-1 and Eads = -3,898 kJ/mol, so the adsorption of both types of adsorbents indicated experiencing a physical adsorption (physisorption / fisisorpsi).Keyword: G. verticillata (Wild) Munro, G. atter (Hassk) Kurz ex Munro, Adsorption, Diazinon,  actived charcoal  ABSTRAK          Adsorpsi insektisida diazinon oleh dua jenis adsorben, yaitu arang aktif bambu andong (G. verticillata (Wild) Munro) dan bambu ater (G. atter (Hassk) Kurz ex Munro) pada kondisi optimum bertujuan untuk menentukan kapasitas adsorpsi maksimum dari kedua jenis adsorben. Analisis data pengaruh konsentrasi terhadap kapasitas adsorpsi digunakan persamaan isoterm Langmuir dan Freundlich. Berdasarkan data yang diperoleh, kurva isoterm adsorpsi lebih mengikuti model isoterm Langmuir dengan koefisien regresi linier yang relatif lebih mendekati 1 yaitu R2 = 0,996 untuk kedua jenis adsorben. Dari persamaan isoterm Langmuir diperoleh kapasitas adsorpsi maksimum arang aktif bambu andong (G. verticillata (Wild) Munro) sebesar 4,630 mg/g (1,433.10-5 mol/g) dengan K = 0,332 (Kmol/L)-1 dan Eads sebesar -2,750 kJ/mol, sedangkan arang aktif bambu ater (G. atter (Hassk) Kurz ex Munro) menghasilkan kapasitas adsorpsi maksimum sebesar 1,786 mg/g (5,868.10-6 mol/g) dengan K = 0,202 (Kmol/L)-1 dan Eads = -3,898 kJ/mol, sehingga adsorpsi kedua jenis adsorben diindikasikan mengalami adsorpsi secara fisik (physisorption/ fisisorpsi).Kata kunci : G. verticillata (Wild) Munro, G. atter (Hassk) Kurz ex Munro Adsorpsi, Diazinon, Arang aktif
ULASAN: KEBERHASILAN BELAJAR SISWA MELALUI PENERAPAN PEMBELAJARAN KOOPERATIF TIPE STAD Murtihapsari Murtihapsari; Sri N Patandean; Radite Yogaswara
Orbital: Jurnal Pendidikan Kimia Vol 5 No 1 (2021): Orbital: Jurnal Pendidikan Kimia
Publisher : Chemistry Education Department of Education and Teaching Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/ojpk.v5i1.7996

Abstract

One way learning method could lead students unfocused and difficult to gain learning outcomes . Currently, the Comparative learning model by Student Team Achievement Division (STAD) it is largely used in teaching. Therefore, this review was made to understand and find out the impact of the learning model system in the class. The study is based on literatures with the following criteria (1) STAD cooperative type with a quasi-experiment and (2) research subjects were at the senior high school at MIPA class. We obtained 14 articles are similar with the criteria. Each of the article shortly describe the research finding. Indicator of student success with cooperative type STAD can be seen from the average value above 50%. It was found that the STAD type of cooperative learning model lead the creation of actively students mood, creative, and independent learning atmosphere for students in receiving, processing, and answering learning material. This learning model is likely one of the most adaptive model learning, modifications some elements are required depend on characteristic and environment learning locally.
ULASAN: KAJIAN PENERAPAN MODEL PEMBELAJARAN MELALUI PRAKTIKUM DARI BAHAN ALAM Murtihapsari - Murtihapsari; Yunita Pare Rombe; Nesiana Monica Naa; Radite - Yogaswara
Jurnal Penelitian Pendidikan Kimia: Kajian Hasil Penelitian Pendidikan Kimia Vol 9, No 1 (2022)
Publisher : Chemistry Education Study Program Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jppk.v9i1.15375

Abstract

Kimia dikenal sebagai salah satu dari beberapa mata pelajaran yang mempelajari bahan alam. Pembelajaran melalui eksperimen atau praktikum bertujuan untuk mengetahui bahan dari alam dan lingkungan sekitar. Ulasan ini bertujuan untuk memberikan pemahaman kepada peserta didik yang kemudian diarahkan untuk meningkatkan khasanah metode pembelajaran yang aktif, menyenangkan, kreatif, dan memotivasi peserta didik dalam proses belajar mengajar. Ulasan ini disusun berdasarkan publikasi ilmiah nasional terakreditasi yang dikumpulkan untuk melihat data keberhasilan peserta didik dalam memperoleh nilai mata pelajaran kimia melalui metode praktikum bahan alam. Berdasarkan beberapa literatur menunjukkan bahwa melalui metode pembelajaran ini, nilai peserta didik mengalami peningkatan rata-rata lebih dari 50%. Berdasarkan bukti tersebut dapat disimpulkan bahwa pembelajaran dengan menerapkan metode praktikum dari bahan alam dengan model Project Based Learning dapat meningkatkan keterampilan, kemampuan pemecahan masalah, pengetahuan dan keterampilan kerja serta meningkatkan hasil belajar peserta didik. 
The potential of Barringtonia asiatica Biopesticide from Papua to Eradicate Pests in Aquaculture Achmad Suhermanto; Fabian Ardianta; Murtihapsari Murtihapsari; Achmad Sofian
Jurnal Airaha Vol 11 No 01: June 2022
Publisher : Politeknik Kelautan dan Perikanan Sorong, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (241.155 KB) | DOI: 10.15578/ja.v11i01.335

Abstract

Saponins are compounds derived from plants that are currently widely used in aquaculture for aquatic pest control. In this study, potential saponin components extracted from fish poison tree (Barringtonia asiatica), which is widely dispersed in tropical areas worldwide, were characterized. Saponin properties were obtained from seeds and leaves by extraction and spectrophotometric methods. To test its properties, four different concentrations of saponin extracts, namely 10 ppm, 20 ppm, 30 ppm, and 40 ppm, were applied in four trials containing 20 tilapias each. An unexpected result was obtained and proved that the saponins extracted from the seeds of the fish poison tree proved to be significantly more effective than the saponins extracted from the peel of its fruit to eradicate pest in pond. The results also revealed that the lethal dose of saponins reached higher level at a concentration of 40 ppm. It can be concluded that fish poison tree as a poisonous tree plays an important role in ensuring the sustainability of saponin stocks. The use of natural materials such as fish poison tree as a biopesticide has the potential to minimize environmental damage and reduce costs for aquaculture.
PENGARUH MODEL TPS BERBANTUAN VIDEO ANIMASI TERHADAP HASIL BELAJAR KOGNITIF PESERTA DIDIK Sofi Ira Fanti; Murtihapsari Murtihapsari; Yunita Pare Rombe
QUANTUM: Jurnal Inovasi Pendidikan Sains Vol 13, No 2 (2022): Oktober 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/quantum.v13i2.13977

Abstract

Tujuan dari penelitian untuk mengetahui pengaruh model pembelajaran kooperatif tipe TPS (Think Pair Share) berbantuan video animasi terhadap hasil belajar kognitif peserta didik kelas XI IPA di Madrasah Aliyah Negeri Manokwari. Jenis penelitian true eksperimental design dengan desain pretest-posttest control group design. Populasi yang digunakan dari peserta didik kelas XI IPA 2 sebagai kelas eksperimen dan kelas XI IPA 1 sebagai kelas kontrol. Penelitian ini menggunakan teknik purposive sampling dengan jumlah peserta terdiri dari  26 siswa. Hasil analisis uji Paired Sample t-test pada pasangan 1 dan 2 diperoleh nilai sig. (2-tailed) sebesar 0,000 < 0,05, maka H0 ditolak dan Ha diterima sesuai dengan kriteria pengujian hipotesis. Sehinggs dapat disimpulkan bahwa penggunaan model pembelajaran TPS (Think Pair Share) berbantuan video animasi berpengaruh terhadap hasil belajar kognitif peserta didik dengan persen pengaruh yaitu sebesar 60%.
Developing Problem-Based Learning Modules on Petroleum Materials in Chemistry Learning Fauziah Ahmad; Murtihapsari Murtihapsari; Yunita Pare Rombe
Jurnal Tadris Kimiya Vol 8, No 1 (2023)
Publisher : Department of Chemistry Education, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/jtk.v8i1.23952

Abstract

The aim of this study is to investigate how to develop, validity, and practicality levels from the PBL-based module. The research is based on Research & Development (R&D) with a modified 4-D development model to 3-D covering define, design, and development stages. Data collection tools include observation, validation, worksheet, and questionnaires of students’ responses to the chemistry modules. Based on the study results, it was identified that the modules developed to determine criteria eligibility, practicality, and response students of Problem-Based Learning on petroleum material. The material and media experts' validation tests showed 0.851 and 0.726 (valid), respectively. The average practically percentage of modules for students is 77.52% with very practical criteria. The development of PBL-based chemistry modules on chemistry and the application of petroleum is expected to help students in learning chemistry.
Co-Authors Achmad Sofian Bertha Mangallo Dini Dwi Handyani Fabian Ardianta Fauziah Ahmad Nesiana Monica Naa Radite - Yogaswara Radite Yogaswara Sofi Ira Fanti Sri N Patandean Suhermanto, Achmad Yunita Pare Rombe Yunita Pare Rombe Yunita Pare Rombe