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All Journal PENA SAINS KOVALEN: Jurnal Riset Kimia Al-Kimia Indonesian Journal of Pure and Applied Chemistry SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan JURNAL TEKNOLOGI DAN OPEN SOURCE Fullerene Journal of Chemistry Jurnal Review Pendidikan dan Pengajaran (JRPP) Oxygenius Journal Of Chemistry Education Jurnal Inovasi Pendidikan dan Sains Jurnal Sains dan Edukasi Sains Jurnal Anugerah: Jurnal Pengabdian Kepada Masyarakat Bidang Keguruan dan Ilmu Pendidikan GUYUB: Journal of Community Engagement Sciening : Science Learning Journal Biopedagogia CHEDS: Journal of Chemistry, Education, and Science Jurnal Ilmiah Pendidikan Dasar (JIPDAS) Venn: Journal of Sustainable Innovation on Education, Mathematics and Natural Sciences Altafani KREATIF Jurnal Pengabdian Masyarakat Sains dan Teknologi
Aisyiah Restutiningsih Putri Utami
Universitas Negeri Manado
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Sintesis Nanokomposit Fe3O4/SiO2/TiO2 dengan Metode Sol-Gel Aisyiah Restutiningsih Putri Utami; Eko Sri Kunarti; M. Sulthon Nurharman Syah Putra
Jurnal Kimia Fullerene Vol 8 No 1 (2023): Fullerene Journal of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v8i1.498

Abstract

The research was began with the synthesis of magnetite by reacting FeCl3.6H2O and FeSO4.7H2O by co-precipitation and sonication method. Then magnetite covered by silica was sintisized using sonication method by reacting TEOS with magnetit in base condition, and then coated by TiO2 using sol-gel method followed by calcination by using TTIP as a precusor. The X-Ray Diffractometer (XRD) were used to characterize the nanoparticles. The XRD defractofram showed the diffraction pattern 2ÆŸ (o) at 25.38o, 35.881o, 38o, 38,797o, 48.26o, 54.22o, 55,4o, 63.119o, and 69.24o that based on JCPDS data No. 21-1272 that showed TiO2 anatase stucture.
EFFECT OF POTASSIUM HYDROXIDE CONCENTRATION AS A CATALYST ON THE YIELD OF COCONUT OIL (Cocos nucifera) TRANSESTERIFICATION Chaleb Paul Maanari; Sanusi Gugule; Feti Fatimah; Aisyiah Restutiningsih Putri Utami; Mustapa Mustapa; Stefan Marco Rumengan; Miftahul Jannah; Jakub Saddam Akbar; Djois Sugiaty Rintjap
Indonesian Journal of Pure and Applied Chemistry Vol 6, No 3 (2023)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v6i3.65513

Abstract

Research has been carried out on the effect of potassium hydroxide catalyst concentration on the yield of coconut oil (Cocos nucifera) transesterification and continued to characterize the reaction results. The concentration of potassium hydroxide used was 1, 2, and 3% by weight of coconut oil with ethanol as the reactant. The data processing used was the one-way analysis of variation and its characterization from a physicochemical perspective, followed by the analysis of gas chromatography-mass spectroscopy (GCSM) and infrared spectrophotometry. Based on the data processing results, potassium hydroxide concentrations of 1, 2, and 3% did not affect the yield of the transesterification reaction of coconut oil, and the results were 74.5264%, 71.9330%, and 69.0420%. The characterization results show that the physicochemical properties of the reaction products, such as acid number, density, and viscosity, comply with the Indonesian National Standard (SNI) for biodiesel. The results of the GCMS analysis showed that nine peaks were dominated by ethyl laurate.
Pelatihan Pembuatan Media Pembelajaran Berbasis Aplikasi Android pada Dosen-dosen Muda UNIMA Mustapa; Aisyiah Restutiningsih Putri Utami; Jakub Saddam Akbar; Miftahul Jannah
Altafani Vol. 3 No. 1 (2023): Edisi Oktober 2023
Publisher : Institut Syekh Abdul Halim Hasan Binjai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59342/jpkm.v3i1.428

Abstract

Pendidikan merupakan aspek universalitas yang harus ada dalam perikehidupan umat manusia. Perkembangan teknologi informasi dan komunikasi telah merambah pada bidang pendidikan dan pengajaran, hal ini menuntut para pendidik untuk lebih meningkatkan kemampuannya seperti cara mengajar, materi ajar yang disajikan dan lainnya. Media pembelajaran merupakan perantara dalam menyampaikan suatu pesan yang didesain sehingga tujuan pembelajaran bisa dicapai. Penggunaan dari media pembelajaran sangat penting diterapkan, supaya pembelajaran tidak monoton dan dapat menarik perhatian peserta didik. Namun, hampir semua dosen muda UNIMA memiliki kemampuan dalam pembuatan media pembelajaran masih minim sehingga berdampak pada sulitnya peserta didik memahami proses pembelajaran. Kegiatan ini bertujuan memberi pelatihan dalam pembuatan media pembelajaran berbasis android yang dapat meningkatkan pengetahuan dan keterampilan dosen-dosen muda UNIMA dalam hal pembuatan media pembelajaran berbasis android. Pelatihan ini diharapkan dapat memberikan dampak positif dalam pengembangan pendidikan di UNIMA. Metode pelaksanaan dari pengabdian ini diawali dengan persiapan dan pelaksanaan. Hasil dari pengabdian yang dilakukan menunjukkan bahwa dosen muda di UNIMA memiliki antusias yang cukup besar dalam mempelajari dan mengembangkan media pembelajaran, ini dapat dilihat dari antusiasnya peserta pelatihan dalam mengikuti kegiatan ini.
Analisis Berpikir Kritis Mahasiswa Mata Kuliah Kimia Dasar Materi Ikatan Kimia Aisyiah Restutiningsih Putri Utami; Mustapa Mustapa; Ermita Ermita; Miftahul Jannah; Ayu Fahimah Diniyah Wathi
Oxygenius: Journal Of Chemistry Education Vol 5 No 2 (2023): Oxygenius : Journal Of Chemistry Education
Publisher : Chemistry Department, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/ojce.v5i2.608

Abstract

This study aims to analyze the chritical thinking skill of university students. The sample of this study was 16 (sixteen) people taken by purposive sampling method. The study was took in Basic Chemistry class and the topic was chemical bonding. The reasearch method was qualitative descriptive reasearch. The instruments developed were test instrument and interview. The test instrument consists of four dimension such as interpretation, analysis, evaluation, and inferension. The result of this study prove that the chritical thinking skill of university students were moderate and the average percentage was 66,0625 The value of each dimensions were 62,75% for interpretation, 55,25% for analysis, 68,75% for evaluation, and the last was 77,5% for inferension.
Determination of Boron Concentration at Sausage Samples with Distillation of Ester Borane Method using Fluorescence Spectrophotometry Lailatusholihah, Isna; Aisyiah Restutiningsih Putri Utami; Micha Mahardika
KOVALEN: Jurnal Riset Kimia Vol. 9 No. 3 (2023): December Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2023.v9.i3.16673

Abstract

The study of borax contamination in food samples was successfully analyzed. This study used sausage samples using the Fluorescence Spectrophotometry method. Sausage samples were from Daerah Istimewa Yogyakarta (DIY). This study used 4 sausage samples. The samples were given labels A, B, C, and D. The steps of the research were optimation of distillation time, optimation of catalyst, optimation of solvent, and then followed by analyzing the borax concentration on sausage samples. Based on this study, the optimum distillation time was 24 hours. On the other hand, the best catalysts and solvents were sulphuric acid and ethanol. The A and B samples contained borax contamination and the concentration was under 5 ppm. The C and D samples contained borax contamination and the concentration was above 5 ppm. The conclusions were that A and B samples were not given borax addition and C and D samples were given borax addition.
VIRTUAL LABORATORIES FOR SCIENCE LEARNING IN THE DIGITAL ERA Mustapa Mustapa; Wilce Anna Cahya Kuendo; Aisyiah Restutiningsih Putri Utami; Miftahul Jannah; Chaleb Paul Maanari
Jurnal Review Pendidikan dan Pengajaran (JRPP) Vol. 6 No. 4 (2023): Volume 6 No 4 Tahun 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jrpp.v6i4.20815

Abstract

Di era digital yang ditandai dengan kemajuan teknologi informasi, pemanfaatan laboratorium virtual menjadi penting dalam meningkatkan kualitas pendidikan sains. Dalam konteks digital ini, laboratorium virtual mempunyai kemampuan untuk menggantikan peran laboratorium nyata dalam menguji teori, hukum, dan konsep ilmiah. Penelitian ini mengeksplorasi berbagai platform laboratorium virtual yang dapat diterapkan pada pendidikan sains. PhET, Chemcollective, dan OLabs adalah platform yang dianalisis dalam artikel ini. Setiap platform memiliki kekuatan dan keterbatasannya masing-masing. Informasi yang diberikan diharapkan dapat menjadi panduan bagi guru dalam memilih platform laboratorium virtual yang selaras dengan tujuan pendidikan sains yang dimaksudkan.
The Effect of Cellulose Succinate Concentration on the Mechanical Properties of Bioplastics Jannah, Miftahul; Mustapa; Utami, Aisyiah Restutiningsih Putri; Papriani, Nada Pertiwi
Al-Kimia Vol 11 No 2 (2023): DESEMBER
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v11i2.41287

Abstract

The principle of bioplastic film formation is based on hydrogen bonds between the constituent molecules of bioplastics. The addition of carboxylic groups to cellulose molecules into cellulose succinate (CS) can increase bond regularity so that it has an impact on the mechanical properties of bioplastics. The purpose of this study was to determine the effect of CS concentration on tensile strength and elongation of bioplastics. The stages of this research are the synthesis of bioplastics by mixing method and variation of CS concentration, characterization of bioplastics to determine the effect of CS concentration on the mechanical properties of bioplastics, analysis of functional groups with FTIR and bond regularity with XRD. The results obtained in this study are CS concentration affects the characteristics of bioplastics. The best bioplastic was found at 3.2% CS concentration with a tensile strength value of 10.48 MPa and elongation of 4.38%. The peaks that appear on FTIR analysis are typical groups on cellulose, namely O-H, C-H and C-O. CS bioplastics also consist of amorphous and crystalline phases.
THE INFLUENCE OF HEAVY METALS ON THE ABSORPTION OF CATIONIC DYES Mustapa Mustapa; Aisyiah Restutiningsih Putri Utami; Chaleb Paul Maanari; Miftahul Jannah; Stefan Marco Rumengan
JURNAL PENA SAINS Vol 11, No 1 (2024): Jurnal Pena Sains
Publisher : Program Studi Pendidikan IPA, Fakultas Ilmu Pendidikan, Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jps.v11i1.24999

Abstract

Cationic dyes are dyes containing amine derivatives that can be used on cellulose, protein, nylon, acrylic and synthetic fibers but these dyes are less fast in coloring. This study investigates the impact of Pb2+ heavy metal ions on cationic dye absorption utilizing molecularly imprinted polymers as adsorbents. Concentrations of Pb2+ ranging from 0 to 50 mg/L were examined. In a one-hour interaction, 50 mg of adsorbent was introduced into a solution containing 100 ppm methylene blue dye and Pb2+ with varying concentrations. Following centrifugation, the filtrate was collected, and dye concentration was measured using a visible light spectrophotometer. The sorption capacity of the dye with Pb2+ reached 41.22 mg/g at the highest concentration and 35.83 mg/g at the lowest. Notably, an inverse relationship was observed between Pb2+ concentration and absorption capacity, indicating a decrease as metal ion concentration increased, though stability was maintained. These findings contribute valuable insights into the nuanced dynamics of heavy metal ions and cationic dye absorption, shedding light on potential applications of molecularly imprinted polymers as effective adsorbents.
Arisan Pakintaki sebagai Media Komunikasi dan Ruang Pengembangan Karir bagi Dosen Muda UNIMA Mustapa; Aisyiah Restutiningsih Putri Utami; Ermita; Miftahul Jannah
Altafani Vol. 3 No. 2 (2024): Edisi April 2024
Publisher : Institut Syekh Abdul Halim Hasan Binjai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59342/jpkm.v3i2.482

Abstract

Artikel ini membahas implementasi perkumpulan Arisan Pakintaki sebagai media komunikasi dan ruang pengembangan karir bagi dosen muda di Universitas Negeri Manado (UNIMA), khususnya yang berasal dari Sulawesi Selatan. Perkumpulan ini tidak hanya menyediakan platform interaktif untuk pertukaran ide dan pengetahuan antar dosen muda, tetapi juga memberikan pelatihan keterampilan dan mendukung pengembangan karir mereka. Melalui diskusi berbagai topik seputar dunia akademik, kolaborasi dan dukungan antaranggota, Arisan Pakintaki membantu dosen muda UNIMA memperluas jaringan profesional, merencanakan langkah-langkah pengembangan karir, dan meningkatkan produktivitas penelitian serta kontribusi dalam pengabdian kepada masyarakat. Perkumpulan ini memainkan peran vital dalam membentuk komunitas akademik yang solid dan mendukung pencapaian visi dan misi UNIMA dalam mencetak dosen berkualitas yang siap bersaing di tingkat nasional dan internasional.
Peningkatan Hasil Belajar Stokiometri pada Kuliah Kimia Dasar Menggunakan Pendekatan Flipped Classroom Stefan Marco Rumengan; Chaleb Paul Maanari; Aisyiah Restutiningsih Putri Utami; Mustapa Mustapa; Miftahul Jannah; Vlagia Indira Paat; Varisky Abraham Dumanauw; Jeanne Maria Tuerah; Marlina Karundeng; Yana Sambeka
SCIENING : Science Learning Journal Vol. 5 No. 1: Juni 2024
Publisher : Jurusan Pendidikan IPA FMIPA Universitas Negeri Manado

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

Abstract

Flipped classroom merupakan pendekatan pembelajaran di mana isi materi dan keterampilan yang biasanya diajarkan selama sesi kelas disampaikan di luar kelas. Penelitian ini bertujuan untuk mengevaluasi peningkatan hasil belajar mahasiswa dengan menggunakan model pembelajaran flipped classroom pada materi stokiometri dalam kuliah kimia dasar. Metode penelitian yang digunakan adalah penelitian kuantitatif dengan metode eksperimen dan desain one-group pretest-posttest. Sampel penelitian terdiri dari 35 mahasiswa kelas A di program studi pendidikan matematika Universitas Negeri Manado (Unima). Data dikumpulkan melalui tes hasil belajar dengan memberikan pretest sebelum proses perkuliahan dan posttest setelah proses perkuliahan dilaksanakan. Hasil penelitian menunjukkan bahwa rata-rata hasil belajar mahasiswa pada pretest adalah 49,33, sedangkan pada posttest meningkat menjadi 87,33. Pengujian N-Gain score menunjukkan skor sebesar 77%, yang masuk dalam kategori efektif dan tinggi. Berdasarkan temuan tersebut, dapat disimpulkan bahwa penerapan model flipped classroom secara efektif dan signifikan meningkatkan hasil belajar mahasiswa pada materi stokiometri dalam kuliah kimia dasar di program studi pendidikan matematika Unima.
Co-Authors Anggriani, Nita Ayu Fahimah Diniyah Wathi Ayu Febrianti Akbar Berutu, Tania Fransiska Chaleb Paul Maanari Chaleb Paul Manaari Djakariah Djois Sugiaty Rintjap Eko Sri Kunarti Ermita Ermita Ermita Ermita Fachry Abda El Rahman Feti Fatimah Fitrianingrum, Aufa Maulida Jakub Saddam Akbar Jeanne M. Tuerah Jenny Kumajas Kurniahtunnisa Kurniahtunnisa Kuron, Meidy Atina Lailatusholihah, Isna M. Sulthon Nurharman Syah Putra Maanari, Chaleb Paul Maria Yasinta Manuel Marlina Karundeng Maulidiah, Maulidiah Mellyatul Aini Melyatul Aini Micha Mahardika Miftahul Jannah Miftahul Jannah Miftahul Jannah Muhammad Isbar Pratama Musma Rukmana Musma Rukmana Mustapa Mustapa Mustapa Mustapa Mustapa, Mustapa Nada Pertiwi Papriani Paat, Vlagia Indira Pratiwi, Ananta Dian Rauhe, Gilliant Meiralda Rosauli Novalina Samosir Sanusi Gugule Sidhabukke, Indah Utari Stefan Marco Rumengan Tika Putri Agustina Varisky Abraham Dumanaw Wilce Anna Cahya Kuendo Yana Sambeka