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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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Journal : Progressive Physics Journal

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Kaitan Luas Permukaan Pot Bonang Dengan Frekuensi Nada Dasar Yang Dibangkitkan Pebriani, Putri Hesti; Munir, Rahmawati; Natalisanto, Adrianus Inu
Progressive Physics Journal Vol 4 No 1 (2023): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ppj.v4i1.1017

Abstract

One of the musical instruments in the gamelan is the bonang instrument. A bonang is a musical instrument with a small, hollow structure. This study was conducted to determine the relationship between the surface area of the bonang pot and the frequency of the basic tone generated, and to find out the results of the variety of sounds on the bonang musical instrument. A bong that was stopped only after the sound was muted was applied to record the audio directly. Using AudioCyti software, a surface area and frequency are then measured, and the output signal is measured using the Fourier transform method. The parameters measured are surface area and frequency. In accordance with the results of this study, there is a connection between surface area, or the basic frequency, which is achieved with a frequency of 0.88363, and frequency, which is obtained with a frequency of 0.986053. So, it is concluded from the study that has been carried out that the surface area has an influence on the frequency. Users can determine the frequency of a bonang musical instrument's fundamental tone by varying its frequency values from lowest to highest and analyzing the output signal with audiocyti software. As a result, each sound produced by a bonang pot is distinct and nonsequential. This is because, like modern musical instruments, a bonang laras slendro does not yet have a set tone frequency.
Sintesis Adsorben Ampas Teh sebagai Penyerap Ion Logam Berat Timbal dalam Air Perdana, Akbar; Zarkasi, Ahmad; Hamdani, Dadan; Natalisanto, Adrianus Inu; Munir, Rahmawati
Progressive Physics Journal Vol. 5 No. 2 (2024): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ppj.v5i2.1026

Abstract

Heavy metal pollution is still a serious problem today. One method that can be used to remove heavy metal content from water is the adsorption method. In the adsorption method, the choice of adsorbent is very important to optimize the adsorption process. One of the materials that can be used as an adsorbent is tea waste. Tea waste contains cellulose, which can be used to bind heavy metal ions. This research was conducted to synthesize adsorbents using tea waste and then test their ability to adsorb lead ions. The adsorbent synthesis process is divided into several stages, namely washing, drying, refining, soaking in HCl solution, and drying again. The results of the adsorption tests conducted found that the tea waste adsorbent could remove 99% of the lead metal ion content in the water. The conclusion from these results is that the synthesis process has succeeded in making tea waste adsorbent that can adsorb lead ions in water.
Co-Authors Abdurrahman, Adam Adrianus Inu Natalisanto Agus Anwar 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 Dani Josafat Simanjuntak Darminto . Darminto Darminto David Bandhaso Destri Amelia Akbarri Djayus Ekaviyanti Ekaviyanti Elfrida Dwi Saputri Erlinda Putri Erlinda Ratnasari Putri Euis Sustini Fachrudy, Muhammad Adi Fahmi Astuti, Fahmi Fawwaz Apto Anugro Hamdi, M. Khilal Idris Mandang Idris Mandang, Idris Igor Levi Satriani Intifadhah, Sahara Hamas Khalisha, Siti Nur Khoiriyah Khoiriyah Kholis Nurhanafi Khuluqi, Ibnu Akmal Kormil Saputra Margareta, Desyana Olenka Margaretta, Desiana Olenka Mikrajuddin Abdullah Mislan Mislan Mislan Mohammad Asrul Muhammad Dhia Ar Rasyid Muhammad Fauzil Hafidz Muhammad Naufal Azhari Munir, Rahmiati Murtadha, Nayla Izzatil Mutmainna, Mutmainna Nadia Rudyanti Nadya Amalia Namira Yolanda Namira Yolanda Nia Amanda 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 Riska Dwi Andriana Robert Janssen Stevenly Safitri, Niken Ari Salamah, Alifah Balqis Sparisoma Viridi Suhadi Muliyono Sulistyowati, Rita Syaharani Puspita Sari Utami, Fisca Dian Wahidah Wahidah Wahidah Wahidah Wahyuda, Aji Arda Nur Wardani Wardani Wardhani, Pratiwi Sri Yanti, Nuri Yusrani, Nurrohimawati Zetsaona Sihotang Zurma, Retno