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All Journal ELKHA : Jurnal Teknik Elektro JURNAL FISIKA Jurnal Fisika Unand BULETIN FISIKA Jurnal Fisika FLUX AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Inotera Jurnal Fisika dan Terapannya Progressive Physics Journal Jurnal Ilmu dan Inovasi Fisika Geosains Kutai Basin InSTEM ANDIL Mulawarman Journal of Community Engagement Journal of Tropical Architecture and Sustainable Urban Science Frontier Advances in Applied Science and Engineering
Munir, Rahmawati
Departement Of Physics, Faculty Of Mathematics And Natural Science, Mulawarman University
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy 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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Bahasa Inggris Erlinda Putri; Namira Yolanda; Rahmawati Munir
Jurnal Inotera Vol. 7 No. 2 (2022): July-December 2022
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol7.Iss2.2022.ID171

Abstract

Kalimantan is an island surrounded by tropical rain forests and has hot and humid weather because it is crossed by the equator. The hot and humid weather affects the human working climate in the exchange of air in the room, for example in the laboratory. This study objective was to know the amount of air exchange per hour at the Samarinda Occupational Safety and Health Center. The tools used were the TESTO 425 anemometer, a digital meter, a thermohygrometer, a manometer, and a laptop. The chambers where air changes per hour measured were the main laboratory, weighing chamber, UV-VIS spectrophotometer chamber, and atomic absorption and chromatography spectrophotometer chamber. Based on the results of measurements and data analysis, it can be concluded that the ventilation system of 3 out of 4 laboratory chambers has met the recommendation.
Studi Awal Fabrikasi Sel Surya Murah Menggunakan TiO2 Sebagai Material Penyerap Foton dengan Deposisi Ion-Ion NaCl Rahman, Dui Yanto; Sulistyowati, Rita; Munir, Rahmawati; Margareta, Desyana Olenka; Utami, Fisca Dian
Jurnal Fisika Vol 12, No 1 (2022)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jf.v12i1.33428

Abstract

Deposisi partikel tembaga sebagai jembatan elektron bagi sel surya berbasis TiO2 masih meninggalkan permasalahan berupa tidak sederhana dan efektifnya metode yang digunakan. Penelitian ini bertujuan untuk mengganti deposisi partikel tembaga yang menggunakan metode elektroplating dengan deposisi ion NaCl. Sel surya berbasis TiO2 telah difabrikasi dengan  deposisi ion NaCl di antara partikel TiO2. Ion dideposisikan dengan mendispersikan NaCl dalam air sebelum dimasukkan serbuk TiO2. Larutan tersebut kemudian dideposisikan di atas substrat Fluorine Tin Oxide (FTO) menggunakan metode tetesan (droplet) disertai pemanasan dengan suhu 200oC selama satu jam. Kandungan NaCl divariasikan dari 1-9 % relatif terhadap  TiO2. Keberadaan ion di antara partikel penyerap foton dapat meningkatkan efisiensi sel surya dari 0.04% untuk kandungan NaCl sebesar 1% sampai mencapai titik optimum 0.73% untuk kandungan NaCl sebesar 7%. Kandungan NaCl di atas 7 % menyebabkan efisiensi sel surya kembali turun.
Analisis Tendangan Pisang Pesepak Bola David Bandhaso; Rahmawati Munir; Adrianus Inu Natalisanto
Progressive Physics Journal Vol 3 No 1 (2022): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (647.175 KB) | DOI: 10.30872/ppj.v3i1.819

Abstract

Banana kick is a type of soccer kick that uses the Magnus effect. The Magnus effect is a change in the direction of the ball's trajectory caused by the Magnus force. The force arises when a ball moving in air rotates on its axis. This research was conducted to analyze the ball entering the goal as a result of the Magnus force created by footballers. By means of Tracking Video Analysis and Modeling Tool software to several video tracks of football matches, it can be obtained the initial velocity, elevation angle, and angular velocity to determine the reach and heigh of the ball and the pertain Magnus force. The results of this study can be used in banana kick training.
Investigasi pola XRD dan ukuran kristal pada TiO2 terdoping vanadium menggunakan aplikasi VESTA Elfrida Dwi Saputri; Rahmawati Munir; Adrianus Inu Natalisanto
Progressive Physics Journal Vol 3 No 1 (2022): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (883.262 KB) | DOI: 10.30872/ppj.v3i1.909

Abstract

Visualization of crystal structure and simulation of X-ray diffraction patterns of TiO2 (Titanium dioxide) was successfully performed by VESTA application. The purpose of this research is to obtain the relation of lattice parameter and composition to the diffraction pattern. The program on VESTA needs several input parameters that can be found on Crystallography Open Database (COD). The obtained output of the VESTA application are in the form of crystal structure and diffraction pattern graph. The data obtained by VESTA can be used to estimate the size of the crystal. The result showed that TiO2 has a tetragonal shape crystal structure. The addition of dopant such as Vanadium does not change the crystal structure and does not change the peak position of diffraction pattern graph.
Studi Adsorpsi Logam Berat Besi (Fe) dan Timbal (Pb) Air Sungai Mahakam oleh Limbah Cangkang Telur dan Abu Gosok Alris Sanca Pratama Putra; Rahmawati Munir; Adrianus Inu Natalisanto
Progressive Physics Journal Vol 3 No 2 (2022): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (221.848 KB) | DOI: 10.30872/ppj.v3i2.929

Abstract

Waste could be found easily anywhere such as eggshells and rubbing-ash. Being a non-usable rubbish, These type of waste can be usefull in someways with a right treatment and deep research on compound material with in. The physical content from these waste utilized to be an adsorbent, it adsorbs a metal content e.g Mahakam river water sample. Main purpose of this research was based on benefical content from eggshells and rubbing-ash as their ability decreasing metal content. This study concluded experimentally using adsorbtion methods, a device such as Atomic Absobtion Spectrophotometer (AAS) was used to test the decreasing effect on logam content. The obtained data from testing process used to analyzed a metal concentration that disolved in water sample. This study results on decreasing metal concentration such as Fe and also Pb on Mahakam river water sample. Fe concentrat on these water sample shows decline rate from 1,5 mg/L to 0,11 mg/L given certain treatment adding eggshels powder. And also Pb content reduced from 1,69 mg/L to 0,24 mg/L indicate a little waste content from treated water sample. Inference from this study suggest addition of eggshells and rubbing-ash waste in form of powder had decreasing-effect on soluble metal content from Mahakam River water sample.
Analisis pertukaran udara per jam pada ventilasi laboratorium di kawasan hutan hujan tropis Namira Yolanda; Erlinda Ratnasari Putri; Rahmawati Munir
Progressive Physics Journal Vol 3 No 2 (2022): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (357.749 KB) | DOI: 10.30872/ppj.v3i2.933

Abstract

Kalimantan is an island surrounded by tropical rain forests and has hot and humid weather because it is crossed by the equator. The hot and humid weather affects the human working climate in the exchange of air in the room, for example in the laboratory. This study objective was to know the amount of air exchange per hour at the Samarinda Occupational Safety and Health Center. The tools used were the TESTO 425 anemometer, a digital meter, a lutron-abh 4225, and a laptop. The chambers where air changes per hour measured were the main laboratory, weighing chamber, UV-VIS spectrophotometer chamber, and atomic absorption and chromatography spectrophotometer chamber. Based on the results of measurements and data analysis, it can be concluded that the ventilation system of 3 out of 4 laboratory chambers has met the recommendation. The calculation step was carried out by entering the measured parameters into the ACH equation. The last stage, the analysis was carried out to compare the ACH values based on the ASHRAE recommendations. Based on the results, the average value of ACH for the main laboratory room was 3,8 x/hour, weighing chamber was 15,61 x/hour, UV-VIS spectrophotometer was 12,7 x/hour, and atomic absorption and chromatography spectrophotometer chamber was 12,78 x/hour. The average number of air changes per hour (ACH) at the laboratory is 11,22 x/hour, where the amount of air changes per hour is in accordance with the ASHRAE (2011) recommendation for a good and healthy environment, the ASHRAE recommendations with the ACH of the Laboratory room ranging from 6 to 12 x/hour. It can be concluded that wind speed, cross-sectional area, and room volume affect the amount of air exchange per hour.
Analysis of ITO/a-Si:H(p)/a-Si:H(i)/c-Si(n)/Al HIT (Heterostructure with Intrinsic Thin Layer) solar cell performances. Igor Levi Satriani; Rahmawati Munir; Adrianus Inu Natalisanto; Dadan Hamdani
ELKHA : Jurnal Teknik Elektro Vol. 15 No.1 April 2023
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/elkha.v15i1.61351

Abstract

Numerical simulation on HIT (Heterostructure with Intrinsic Thin Layer) solar cell using hetero-structure ITO/(p+)a-Si:H/(i)a-Si:H/(n)c-Si/Al solar cell has been done using AFORS-HET (Automate For Simulation of Heterostructure) software. The purpose of this study is to provide validation as well optimization model of solar cell enhanced performances. Data analysis shows a significant increase on solar power generation. An intrinsic thin layer given between the hetero-interface to reduce defect properties on solar cell structure. The optimization using an optimal value of acceptor-donor doping, dangling-bond defects ( ), thin conductive oxide work function ( ), and other input shows a reducing recombination-rates, as a validation Figure of Merits (FOMs) data reach a maximum efficiency value at 23,67% (  = 634,2 mV;  = 51,2 mA/cm2; = 72,91%, this result achieved on peak data such  = 5,2 eV, Na (doping) = 5.0 x 1019 cm-3,  = 1.0 x 1018 cm-3,  (interface defect) = 1.0 x 1010 cm-3. The results obtained from this simulation produce a number of optimum parameters that can be followed up experimentally to obtain better solar cell performances.
Karakteristik Adsorben Ampas Teh dalam Menyerap Ion Logam Timbal Menggunakan Model Isoterm Langmuir Akbar Perdana; Ahmad Zarkasi, Dadan Hamdani; Adrianus Inu Natalisanto Natalisanto, Rahmawati Munir
JIIF (Jurnal Ilmu dan Inovasi Fisika) Vol 7, No 1 (2023)
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (333.343 KB) | DOI: 10.24198/jiif.v7i1.42746

Abstract

Timbal merupakan salah satu logam berat pencemar air yang sangat berbahaya. Salah satu metode yang dapat digunakan untuk menghilangkan kandungan logam berat tersebut adalah adsorpsi. Dalam proses adsorpsi, pemilihan adsorben sangat penting untuk memaksimalkan proses adsorpsi. Karenanya, penting untuk mengetahui karakteristik dan performa adsorben dalam menyerap logam berat. Model isoterm dapat digunakan untuk memprediksi karakteristik dan performa dari suatu adsorben. Penelitian ini dilakukan untuk meninjau karakteristik dan performa adsorben ampas teh dalam menyerap ion timbal menggunakan model isoterm. Hasil dari penelitian menunjukan bahwa mekanisme penyerapan ion timbal oleh ampas teh terjadi secara fisisorpsi, yaitu ikatan ion. Adapun sifat adsorpsi yang terjadi adalah menguntungkan. Ini menunjukan bahwa ketertarikan ion timbal terhadap ampas teh besar. Kapasitas maksimum ampas teh dalam menyerap ion timbal adalah 3,0353 mg/g. Ini menunjukan bahwa satu gram ampas teh dapat menyerap sebesar 3,0353 mg ion timbal.Kata Kunci: Adsorpsi, Ampas Teh, Timbal, Pencemaran Air, Isoterm
X-ray Absorption Near Edge Structure (XANES) Spectrum Interpretation for LiFePO4-Silicon Doped Cathode Material Sahara Hamas Intifadhah; Kholis Nurhanafi; Fahmi Astuti; Rahmawati Munir; Dadan Hamdani; Darminto Darminto
Jurnal Fisika Unand Vol 12 No 3 (2023)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.12.3.348-354.2023

Abstract

LiFePO4-Silicon doped has been widely developed as a battery cathode material. Due to the doping of silicon atoms, this study aims to determine the peak energy (E0), oxidation state and percentage of component composition for Fe K-edge. The experimental sample used are LFP Si-0%, LFP Si-1%, LFP Si-3% and LFP Si-6%. These samples were characterized using XAS (X-ray Absorption Spectroscopy). XANES spectrum showed the peak energy of Pre-edge area is 7113.08 – 7114.49 eV. The oxidation state of Fe atoms were increased and tend to be Fe3+ than Fe2+. Moreover, Linear Combination Fitting (LCF) used to determine the ratio composition FeO/Fe2O3 in experimental samples. The ratio composition indicated Fe atom is multivalent, when the percentage of silicon-doped increases, the ratio of Fe3+ increased.It has been found that the presence of silicon atoms in the LiFePO4 structure has an effect in electronic structure.
Upaya Peningkatan Minat Belajar Sains Fisika di SDN 022 Samarinda Utara Melalui Pelatihan Pengukuran Dasar Rahmawati Munir; Mislan Mislan; Ahmad Zarkasi; Erlinda Ratnasari Putri; Wahidah Wahidah; Idris Mandang
Aksiologiya: Jurnal Pengabdian Kepada Masyarakat Vol 7 No 4 (2023): November
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/aks.v7i4.11119

Abstract

Upaya peningkatkan minat siswa terhadap sains fisika harus dari usia karena selama ini bidang fisika masih dianggap pelajaran yang sulit . Tujuan pengabdian masyarakat ini adalah melaksanakan pembelajaran pengukuran dasar di SDN 022 Samarinda Utara. Khalayak sasaran merupakan siswa kelas 4-6 berjumlah 25 orang yang dipilih secara acak. Alat ukur dasar yang digunakan adalah mistar, jangka sorong, mikrometer, gelas ukur dan bahan-bahan yaitu kertas, batu, pasir, telur dan gelas. Tahapan pelaksanaan kegiatan penjelasan nama dan fungsi alat ukur, contoh penggunaan alat ukur dan praktek oleh siswa. Pemantauan dan dievaluasi dilakukan terhadap: pengalaman dan pemahaman alat ukur, ketrampilan penggunaan alat, apakah kegiatan menarik bagi peserta, saran/masukan kegiatan praktek di sekolah dan saran/masukan untuk kampus. Hasil menunjukkan, dari seluruh alat ukur yang familiar adalah mistar, sedangkan yang lain sebatas tahu dari gambar dan tidak pernah mempraktekan. Sebaiknya kegiatan praktikum di sekolah dapat dilaksanakan secara rutin dan berhubungan dengan kehidupan sehari-hari, dan untuk mendukung hal tersebut sekolah dan Universitas Mulawarman berkolaborasi secara berkelanjutan dalam bentuk kesepakatan sekolah mitra.
Co-Authors Adrianus Inu Natalisanto Agus Anwar Ahmad Zarkasi Ahmad Zarkasi Akbar Perdana Akbar Perdana Alris Sanca Pratama Putra Amirin Kusmiran Anisa Putri Astuti, Fahmi Dadan Hamdani Dadan Hamdani Dadan Hamdani Dadan Hamdani, Dadan Darminto Darminto David Bandhaso Djayus Elfrida Dwi Saputri Erlinda Putri Erlinda Ratnasari Putri Euis Sustini Fachrudy, Muhammad Adi Hamdi, M. Khilal Idris Mandang Idris Mandang, Idris Igor Levi Satriani Intifadhah, Sahara Hamas Khalisha, Siti Nur Kholis Nurhanafi Kholis Nurhanafi Khuluqi, Ibnu Akmal Kormil Saputra Margareta, Desyana Olenka Margaretta, Desiana Olenka Mikrajuddin Abdullah Mislan Mislan Mislan Mohammad Asrul Muhammad Naufal Azhari Munir, Rahmiati Murtadha, Nayla Izzatil Nadia Rudyanti Nadya Amalia Namira Yolanda Namira Yolanda Nurohman, Ali Pebriani, Putri Hesti Perdana, Akbar Putri, Devina R, Andrian Rahman, Dui Yanto Rahmayanti, Handika Dany Rappan, Erlin raudatul jannah Rayzy Perwitasari Sutaji Putri, Devina Robert Janssen Stevenly Safitri, Niken Ari Salamah, Alifah Balqis Sparisoma Viridi Suhadi Muliyono Sulistyowati, Rita Utami, Fisca Dian Wahidah Wahidah Wahidah Wahidah Wardani Wardani Wardhani, Pratiwi Sri Yanti, Nuri Yusrani, Nurrohimawati Zetsaona Sihotang Zurma, Retno