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All Journal Sodality: Jurnal Sosiologi Pedesaan Jurnal Rekayasa Proses International Journal of Renewable Energy Development JURNAL KIMIA SAINS DAN APLIKASI The Journal of Pure and Applied Chemistry Research Journal of Mathematical and Fundamental Sciences Jurnal Riset Kimia ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Jurnal Rekayasa Proses Edulingua: Jurnal Linguistiks Terapan dan Pendidikan Bahasa Inggris JPPS (Jurnal Penelitian Pendidikan Sains) SEMAR Renjana Pendidikan Dasar International Journal of Science and Society (IJSOC) Makara Journal of Science Jurnal Natural Jurnal MIPA dan Pembelajarannya Molekul: Jurnal Ilmiah Kimia Prosiding Temu Ilmiah Nasional Guru International Journal of Renewable Energy Development Bulletin of Chemical Reaction Engineering & Catalysis Muara: Jurnal Manajemen Pelayaran Nasional Jurnal Rekayasa Proses
Fitria Rahmawati
Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, Sebelas Maret University
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Neuroscience Physics Social Sciences Other

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The Implementation of Cambridge Curriculum in the Excellent Class of MTsN 3 Jombang Shobikah, Nanik; Syafri, Mohamad; Sofia, Iva; Mahsus, Mahsus; Rahmawati, Fitria; Maisaroh, Ummi; Yuni, Prima Novia
Edulingua: Jurnal Linguistiks Terapan dan Pendidikan Bahasa Inggris Vol 11, No 1 (2024)
Publisher : Universitas Islam Nahdlatul Ulama Jepara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34001/edulingua.v11i1.5718

Abstract

English Language Learning in Excellent Class of MTsN 3 Jombang is integrated with the Cambridge Curriculum and it is one of the leading programs in MTsN 3 Jombang to Go International. This qualitative descriptive research used purposive sampling techniques. The subjects in this study were the Head of the Madrasah, the Vice of curriculum, the Head of the Excellent Class Program, and the English Teacher Excellent Class. Data collection is carried out by carrying out observations, interviews, and documentation. Data analysis is carried out by data reduction, data display, and conclusions. The validity of the data is checked by triangulation and member check. The findings in this article are 1) Learning Planning aims to prepare learners to compete at local, national, and international levels; 2) Learning implementation is carried out intensively for 3 months in Grades VII-IX to equip students and develop optimally English using the Cambridge Curriculum; and 3) Learning Evaluation consists of written tests, oral tests, and practice tests.
PROSES PENANGANAN BONGKAR MUAT EQUIPMENT DENGAN DOUBLE CRANE PADA PT SAMUDRA INDAH SEJAHTERA DI PELABUHAN TANJUNG EMAS SEMARANG Puspitasari, Noviana; Rahmawati, Fitria
MUARA Vol 3, No 1 (2020): MUARA
Publisher : Akademi Pelayaran Nasional Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62826/muara.v3i1.26

Abstract

Kelancaran bongkar muat harus sesuai dengan kebutuhan dan penggunaan alat yang sedang beroperasi serta memerlukan perawatan yang baik untuk mendukung agar kapal bongkar muat equipment di dermaga tidak terkena  demmurage (denda biaya keterlambatan, biaya tambahan  yang harus  dikeluarkan  pencharter). Tujuan penelitian ini adalah untuk  mengetahui proses penanganan bongkar muat equipment dengan double crane, serta mengetahui hambatan dalam proses penanganan bongkar muat, dan cara pengurusan dokumen bongkar muat oleh PT. Samudra Indah Sejahtera yang berada di Pelabuhan Tanjung Emas Semarang.Metode Penelitian yang digunakan adalah penelitian kualitatif dengan menggunakan metode penelitian deskriptif ini dilaksanakan di PT Samudra Indah Sejahtera Pelabuhan Tanjung Emas Semarang dilakukan selama 7 bulan, November 2018 - Mei 2019. Dengan menggunakan teknik data seperti observasi untuk melihat langsung kegiatan bongkar muat, wawancara, dan dokumentasi.Hasil penelitian ini diketahui proses penanganan bongkar muat equipment dengan double crane yaitu dengan Proses penanganan bongkar muat, Hambatan dalam proses penanganan bongkar muat dan cara mengurus dokumen bongkar muat. 
N/S-doped carbon electrode derived from paper waste as a sustainable electric double-layer capacitor Rahmawati, Fitria; Aini, Nur; Ridwan, Qanita; Paramartha, I Gusti Ayu Filia; Putri, Denis Octareta Amelia; Saputri, Dini Deviana; Nugrahaningtyas, Khoirina Dwi; Heraldy, Eddy; Hidayat, Yuniawan; Nurcahyo, I. F.; Anggraningrum, Ivandini Tribidasari
International Journal of Renewable Energy Development Vol 14, No 3 (2025): May 2025
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2025.60846

Abstract

This research aims to produce N/S-doped Carbon Electrode derived from paper waste (NSCEp) for Electric Double-Layer Capacitor (EDLC). The paper waste holds potential as raw material for carbon production because of its high cellulose content, abundance of availability, and low price. To enhance the electrical performance of the carbon, an activation step was conducted, followed by double doping with nitrogen and sulfur using thiourea. The NSCEp result was analysed to examine its specific diffraction peaks, crystallinity, morphology, and elemental contents. The NSCEp powder was then mixed with dispersant to produce a homogeneous slurry for the electrode film. The EDLC was assembled in a sandwich-like structure, with sodium hydroxide (NaOH) solution impregnated in a separator between the carbon film electrodes. The EDLC assembly was conducted under an argon atmosphere in a CR2032 coin cell. The results found that the NSCEp provides a high electrical conductivity of 1.21 x 102 S/cm. The prepared EDLC achieved the specific capacitance value of 39.555 F/g as determined by cyclic voltammetry (CV) analysis. Furthermore, the EDLC demonstrates high initial charge-discharge capacities of 300.56 mAh/g and 248.88 mAh/g, respectively, at a current of 0.015 A/g. The capacity remains stable for up to 300 charge-discharge cycles.
Studi awal kestabilan struktur katalis logam transisi periode pertama berbasis HZSM-5 Nugrahaningtyas, Khoirina Dwi; Zalfa, Syafira Nur; Rahmawati, Fitria; Nurcahyo, I.F.; Hidayat, Yuniawan
Jurnal Rekayasa Proses Vol 17 No 1 (2023): Volume 17, Number 1, 2023
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.76449

Abstract

Katalis logam transisi periode pertama (Fe, Co, Ni, Cu, atau Zn) berbasis Hydrogen Zeolite Socony Mobil – 5 (HZSM-5) merupakan katalis yang menjanjikan untuk berbagai macam reaksi. Pada penelitian ini akan dipelajari keperiodikan aktivitas dan kestabilan struktur katalis tersebut pada reaksi cracking anisol. Uji katalitik dilakukan dengan menggunakan reaktor semi alir. Produk dari hasil proses cracking anisol dianalisis menggunakan kromatografi gas-spektra massa (GC-MS), kemudian karakter katalis bekas seperti kristalinitas dan komposisi fasa dianalisis menggunakan X-ray diffraction (XRD), sedangkan luas permukaan dan porositas dianalisis menggunakan surface area analyzer (SAA). Hasil penelitian menunjukkan bahwa tidak nampak kaitan antara sifat periodik unsur dengan aktivitas katalitiknya. Karakter setiap katalis yang telah digunakan mengalami sedikit perubahan pada komposisi fasanya, terutama katalis Fe/HZSM-5 dan Co/HZSM-5, sedangkan luas permukaan dan porositasnya mengalami penurunan.
Effectiveness of Community Based Interactive Approach Method on Community Perception in Utilizing Gotu Kola Rahmawati, Fitria; Suhita, Byba Melda; Widyowati, Agustin
International Journal of Science and Society Vol 7 No 4 (2025): International Journal of Science and Society (IJSOC)
Publisher : GoAcademica Research & Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54783/ijsoc.v7i4.1533

Abstract

Gotu kola is a medicinal plant that is readily accessible, yet it remains underutilized. This research aims to analyze the effectiveness of the Community Based Interactive Approach method on community perception in utilizing gotu kola in Mojorejo Village, Batu City. The research design used a quasi-experimental control group pretest-posttest design. The sampling technique was purposive, with 20 respondents in the treatment group and 20 in the control group. Perception before and after the intervention was measured using a questionnaire. Validity and reliability tests were conducted on the research instruments before use. The research results show that before implementing the method, 80% of respondents' perceptions were categorized as high. After implementing the Community Based Interactive Approach method, all respondents' perceptions increased to the high category. Statistical results using the Wilcoxon test showed an effect of Community Based Interactive Approach on perception in the treatment group (p < 0.001). The Community Based Interactive Approach method effectively improves the community's perceptions in utilizing gotu kola.
DESAIN AKTIVITAS MATEMATIKA SISWA MENGGUNAKAN LEGO UNTUK MENINGKATKAN KEMAMPUAN OPERASI BILANGAN SISWA SD KELAS TINGGI Rahmawati, Fitria; Aryanthi, G. Ayu; Fadilah, Nur
Renjana Pendidikan Dasar Vol 4 No 2 (2024): Edisi Mei 2024
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Mataram

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

Abstract

Penelitian ini bertujuan untuk mengevaluasi dampak desain aktivitas matematika menggunakan LEGO terhadap kemampuan operasi bilangan siswa SD kelas tinggi. Metode yang digunakan adalah Teacher Action Research dengan partisipan sebanyak 32 siswa dari SDN 14 Cakranegara. Proses penelitian melibatkan perencanaan, implementasi, dan analisis data kualitatif. Hasil penelitian menunjukkan bahwa sebanyak 17 siswa berhasil meningkatkan kemampuan operasi bilangan mereka, sementara 15 siswa masih menghadapi kesulitan. Terdapat perubahan signifikan pada kelompok siswa level lanjut yang naik dari 5 menjadi 13. Implikasi penelitian ini mencakup perlunya pendekatan diferensiatif dan adaptasi pembelajaran untuk memenuhi kebutuhan individu siswa. Selain itu, saran praktis disarankan agar guru mengintegrasikan pendekatan pembelajaran ini secara hati-hati dengan pemberian umpan balik dan penyesuaian yang berkelanjutan. Penelitian ini memberikan kontribusi pada literatur penggunaan manipulatif dalam pembelajaran matematika dan menekankan perlunya pemahaman mendalam tentang variasi respons siswa untuk merancang strategi pembelajaran yang lebih efektif di tingkat SD.
The Density Functional Tight Binding (DFTB) Approach for Investigating Vacancy and Doping in Graphene as Hydrogen Storage Hidayat, Yuniawan; Rahmawati, Fitria; Dwi Nugrahaningtyas, Khoirina; Bagus Swandito, Paulus
Jurnal Riset Kimia Vol. 15 No. 1 (2024): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v15i1.635

Abstract

A study on graphene defects for hydrogen storage has been successfully conducted using the Density Functional Tight Binding (DFTB) approach. The research aimed to modify solid materials for hydrogen storage. A 4 × 4 × 1 unit cell was used as the basis, while the supercell used for sampling was enlarged to 40 × 40 × 1. The analyzed data included changes in Density of States (DOS), Fermi level shifts, electronic band structures, formation energy, adsorption energy, and isosurfaces for each graphene orientation. It has been observed that modifying the surface structure of graphene can alter the electronic properties of graphene. This is indicated by shifts in DOS intensity, characterized by increased electronic intensity around the Fermi level total density charge different. The interaction energy between graphene and hydrogen gas has been determined to be -0.0155 eV for H-epoxy graphene, -0.4941 eV for H-monovacancy graphene, and -0.0424 eV for HN-monovacancy graphene. The presence of the vacancy increase the potential to adsorp hydrogen.
A Ferrocene-Modified Carbon Electrode Prepared from Coconut Shell Char for Cu(II) Detection in Water Aulia, Nabila Putri; Rahmawati, Fitria; Masykur, Abu; Heraldy, Eddy
Makara Journal of Science Vol. 30, No. 1
Publisher : UI Scholars Hub

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

Abstract

A ferrocene (Fc)-modified carbon electrode was prepared from coconut shell char (CSC), which was activated with NaOH to produce an activated coconut shell carbon (Ac-CSC). The carbon electrode was designed as a printed-carbon electrode consisting of working, counter and reference electrodes in a single piece, called a screen-printed carbon electrode, or SPCE. An Fc solution was applied to the working electrode part at 10%, 20% and 30% mass of the SPCE, producing an SPCE-Fc as an electrochemical sensor for Copper ions Cu(II) detection. The prepared activated carbon was analysed by XRD, FTIR, SEM/EDX, surface area analysis and impedance measurement to determine its diffraction pattern, available specific functional groups, morphology, elemental content, surface area and electrical conductivity. The results showed that CSC consists of 52.89% amorphous carbon, 19.65% nitrogen and 23.12% oxygen. FTIR analysis showed C=O, C=C, C-H, C-O, O-H, N-H and C-S vibrations. The Ac-CSC provided an electrical conductivity rate of 26.025 S/cm. Cyclic voltammetry analysis of the Cu(II) solution with SPCE-Fc10% provided the highest current density among the other Fc contents. Therefore, a further study used SPCE-Fc10% to determine the limit of detection (LoD), interference effects, pH and scan rate effects, the repeatability of the analysis and the reproducibility of SPCE-Fc10% for Cu(II) detection. The LoD was 0.055 mM. The electrode fabrication also showed good reproducibility, as evidenced by a repeatability coefficient (R) of 0.06. The interference test showed that the SPCE-Fc10% selectively detected Cu(II), even in the presence of 5% volume of Pb(II) and Co(II) in the Cu(II) solution.
REPLACING SODA ASH (NaOH) WITH KALIUM HYDROXYDE (KOH) IN DESTILATION OF BINARY ETHANOL-WATER MIXTURE Istiqomah, Ana Ulfa; Rahmawati, Fitria; Nugrahaningtyas, Khoirina Dwi
ALCHEMY Jurnal Penelitian Kimia Vol 12, No 2 (2016): September
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.12.2.1876.179-189

Abstract

Soda ash (NaOH) has been used in bioethanol production in the second step destillation to increase the purity up to 90%. The destillation process will produce waste water with a high sodium content. The soda ash itself serve as an electrolyte to modify the colligative properties of the water-ethanol mixture allowing the disappearance of azeotropic point. This research aims to study the replacement of NaOH with KOH, in which the kalium is a nutrient to maintain soil fertility. This research study the thermodynamics properties, vapor-liquid equilibrium, colligative properties and also its azeotropic point in the destillation of water-ethanol mixture when KOH and NaOH were used as the additive. A model of water-ethanol mixture at a various composition of 0-100 weight % of ethanol was used. The electrolyte addition was 0.1 mol electrolyte/total weight of ethanol-water. The result shows that the addition of electrolyte into ethanol-water mixture eliminate the azeotropic point and allows the ethanol molecules to separate from water. The enthalpy of mixing between water-ethanol is 239.601 kJ/mol. It becomes 259.796 kJ/mol and 264.793 kJ/mol after the addition of NaOH and KOH, respectively. It confirming the endothermic mixing process due to different polarity between water and ethanol. The presence of electrolyte even reduce more their molecular interaction. However, the change to irregularity result a high positive entropy values that result the negative Gibbs free energy. It confirms the spontaneity of mixing. The vaporization enthalpy, Hvap, of water-ethanol mixture is 76.229 kJ/mol and it becomes 235.366 kJ/mol and 126.189 kJ/mol after the addition of NaOH and KOH. It indicates that the presence of electrolyte inhibites vaporization of water as the major component and allowing ethanol molecules to vapor producing more high purity ethanol.
Screen-printed Carbon Electrode from Coconut Shell Activated Carbon Modified with Ferrocene for Cobalt Detection Muhammad Farhan; Eddy Heraldy; Abu Masykur; Muhammad A. Munir; Fitria Rahmawati
ALCHEMY Jurnal Penelitian Kimia Vol 20, No 2 (2024): September
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.20.2.81386.247-256

Abstract

This research aims to fabricate a screen-printed carbon electrode (SPCE) from coconut shell charcoal. The charcoal was activated with NaOH to produce activated carbon (Ac). It was mixed with acetylene black (AB) and poly (vinylidene) Fluoride (PVDF) at the mass ratio of 7:2:1 for the Ac, AB, and PVDF, respectively, followed by a dispersing with N-Methyl-2-Pyrrolidinone (NMP) producing carbon slurry that was painted on a SPCE template. To increase electrochemical sensitivity, ferrocene, Fc was dropped onto the working electrode part at 10%, 20%, and 30% of the total SPCE mass. The results show that Ac is amorphous with a porous chip-like morphology containing 61.7% carbon. Ac shows vibrations of O–H, C=O, C=C, C–O, and Si–O with surface area and average pore size of 154.612 m2 g-1 and 1.42 nm, respectively. The cyclic voltammetry analysis found that 10% Fc on SPCE provides the highest current density compared to 20% and 30%. Meanwhile, the 2 mV s-1 scanning rate reveals a more defined anodic and cathodic peak than 3 mV s-1 and 5 mV s‑1. Furthermore, the SPCE with 10% Fc shows a good sensitivity to Co (II) ions, proven by a low detection limit (LoD) of 0.224 mmol L-1
Co-Authors -, Patiha Abu Masykur Abu Masykur Agung T. Wijayanta Agung Tri Wijayanta AGUS PURWANTO Agustin Widyowati Alaih, Imam Shofid Andini W. Pratiwi Anggia Putri Gustami Arikasuci Fitonna Ridassepri Aryanthi, G. Ayu Aryunani ., Aryunani Aulia, Nabila Putri Bagus Swandito, Paulus Bintang Junita Siagian, Bintang Junita Byba Melda Suhita Chanif Mahdi Chintya Dewi, Chintya Dani G Syarif Dedi Rohendi Dhini A. Phasa Dian Irianti Dian Irianti Dian Maruto Widjonarko Dwi Aman Nur Romadhona Dwi Nugrahaningtyas, Khoirina Dyah Purwaningsih Eddy Heraldy Eddy Heraldy Eddy Heraldy Eddy Heraldy Eddy Heraldy Eddy Heraldy Edi Pramono Fadlulloh, Zaki Firanda Larasati Gesyth Mutiara Hikhmah Al Ichsan Handaka, Muhammad F. A. Heliani, Kinkind Raras I F Nurcahyo I F Nurcahyo, I F I. F. Nurcahyo I.F. Nurcahyo IF Nurcahyo Imam Shofid Alaih Indah Rizki Fitriani, Indah Rizki Irvina M. Murni Irvinna Mutiara Murni Istiqomah, Ana Ulfa Ita Permadani Ivandini Tribidasari Anggraningrum Jin Miyawaki Jun Nakamura Kardi, Soeparman Karima Apriany Khoirina Dwi Nugrahaningtiyas Khoirina Dwi Nugrahaningtyas Khoirina Dwi Nugrahaningtyas Khoirina Dwi Nugrahaningtyas Khoirina Dwi Nugrahaningtyas Khoirina Dwi Nugrahaningtyas Khoirina Nugrahaningtyas Kinkind Raras Heliani Koji Nakabayashi Larasati Larasati Lisa Agustina Nurlaila Mahsus, Mahsus Maisaroh, Ummi Mawasthi, Wanodya Anggit Moedjijono Moedjijono Mohamad Syafri Mudjijono Mudjijono Muhammad A. Munir Muhammad Farhan Muzayanha, Soraya U. Nilasary, Hanida Nugraheni, Putranty Widha Nur Aini NUR FADILAH Nurani Handayani Nurcahyo, I. F. Nurcahyo, I.F. Nursukatmo, Hartoto Oktaviano, Haryo S. Pamularsih A.W Paramartha, I Gusti Ayu Filia Patiha - Pranoto . Puspitasari, Noviana Putri, Denis Octareta Amelia Qurrotul'aini, Nisriina 'Abidah Raihan, Edo Ridwan, Qanita Rini Wulandari Rini Wulandari Rizki Nur Analita Rochmi I. Apriyani, Rochmi I. Rosalin, Azka W Saputri, Dini Deviana Sayekti Wahyuningsih Sayekti Wahyuningsih Sayekti Wahyuningsih Sentot B. Rahardjo, Sentot B. Septia K Arifah Shobikah, Nanik Shota Sato Sidiq Fathonah Siti Rondiyah Sofia, Iva Suciana Nur Cahyaningsih Syafira Nur Zalfa Syoni Soepriyanto Syulfi Faiz Taufiiq-Yap Yun Hin Trianingsih Eni Lestari Viona Natalia Viona Natalia W.W, Soegimin Wanodya Anggit Mawasthi Widiasih Wijayanta, Agung Tri Witri Wahyu Lestari Wulan Cahya Inayah Yuni, Prima Novia Yuniawan Hidayat Yuniawan Hidayat Yuniawan Hidayat Yuniawan Hidayat Yuniawan Hidayat Yuniawan Hidayat Zalfa, Syafira Nur