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Munir, Rahmawati
Departement Of Physics, Faculty Of Mathematics And Natural Science, Mulawarman University
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Karakterisasi Sifat Mekanik Benang Wol dan Benang Kasur Rahmayanti, Handika Dany; Munir, Rahmawati; Sustini, Euis; Abdullah, Mikrajuddin
Jurnal Fisika Vol 9, No 1 (2019)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jf.v9i1.19421

Abstract

Kajian mengenai karakteristik sifat mekanik benang merupakan hal yang sifatnya sederhana namun penting dilakukan demi berkembangnya penelitian mengenai serat dan benang. Pada penelitian ini digunakan dua jenis benang di pasaran yakni benang wol dan benang kasur. Karakterisasi meliputi kekuatan benang, elongasi, tenacity dan modulus Young. Berdasarkan hasil uji tarik didapatkan nilai kekuatan, elongasi dan tenacity dari benang. Nilai kekuatan benang wol berkisar 1269,09gram-1551,32gram. Dari kurva hasil uji tarik dapat diestimasi nilai modulus Young dari benang wol yang ada di pasaran yaitu 295 MPa-439 MPa. Sedangkan untuk hasil karakterisasi benang kasur di pasaran didapatkan bahwa benang mampu menahan beban maksimum 4794,12 gram-5895,45gram dan nilai modulus Young dari benang kasur didapatkan nilai 389,7MPa-495,29 MPa.
Penggunaan Image Tracking untuk Pengukuran Sifat Mekanik pada Kertas Munir, Rahmawati; Rahmayanti, Handika Dany; Amalia, Nadya; Viridi, Sparisoma; Abdullah, Mikrajuddin
Jurnal Fisika Vol 9, No 1 (2019)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jf.v9i1.19393

Abstract

Berbagai metode karakterisasi telah digunakan untuk memahami sifat mekanik bahan dengan menggunakan metode yang canggih atau metode paling sederhana. Pada penelitian ini dikembangkan metode sederhana untuk menghitung modulus elastis dengan menggunakan image tracking pada kertas A4 (100 g) yang membengkok dengan menerapkan prinsip balok cantilever. Metode ini menggunakan software video tracker 4.94 (Open Source) yang dapat dioperasikan dengan OS Windows. Preparasi sampel dilakukan dengan memotong kertas berukuran 16 cm x 5 cm. Pengambilan gambar dilakukan dengan menvariasikan sudut kelengkungannya pada sampel berbentuk persegi panjang (diasumsikan homogen). Profil lentur balok cantilever pada kertas difoto menggunakan kamera digital. Tracking koordinat dilakukan pada beberapa titik di setiap segmen sampel. Kebergantungan elastisitas terhadap parameter densitas dan penampang balok cantilever juga menjadi dasar dalam mengembangkan metode pengukuran ini. Data penampang dan kerapatan berdasarkan gambar profil lentur setiap bahan yang diperoleh dapat digunakan untuk menghitung modulus elastisitasnya. Hasil penelitian ini dapat berkontribusi pada pengembangan penelitian tentang pengukuran sifat mekanik bahan.
ANALISIS VARIABILITAS SPASIAL DAN TEMPORAL KONSENTRASI NITRAT DI LAUT HALMAHERA DAN LAUT BANDA MENGGUNAKAN METODE EMPIRICAL ORTHOGONAL FUNCTION (EOF) Sihotang, Zetsaona; Mandang, Idris; Munir, Rahmawati
GEOSAINS KUTAI BASIN Vol. 1 No. 1 (2018)
Publisher : Geophysics Study Program, Faculty of Mathematics and Natural Sciences, Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/geofisunmul.v1i1.163

Abstract

The East Indonesian ocean water is highly complex waters where it has become the passage of water masses from Pacific Ocean to Indian Ocean. Halmahera Sea and Banda Sea has an important role as one of the global ocean current trajectory from Pacific Ocean to Indian Ocean. The movement of water masses that occuring in this region has affect the condition and its fertility. One of the nutrients that affect the process of the growth of the pythoplankton and other microorganism is nitrate and it has become one of the indicators of waters fertility. This research aims to find out the effect of temperature and salinity on the change of nitrate concentration using Empirical Orthogonal Function (EOF) method. This method is used to separate the spatial and temporal data linkage in order to obtain the dominant spatial and temporal patterns. The data that used for the analysis was obtained from the output of the HYCOM (Hybrid Coordinate Ocean Model) model + NCODA Global 1/12º Reanalysis. The result of the analysis showing that the nitrate concentration was highly sensitive on the change of temperature in the ocean specifically in the Banda Sea region. The nitrate concentration increased during the East Monsoon where the sea surface temperatures dropped to 25ºC. In the West Monsoon, the sea surface temperature is warmer than usual so that the Banda Sea has a low nitrate concentration. In other hand, salinity did not show a significant effect on changes of nitrate concentration in the region of the Banda Sea and Halmahera Sea.
ANALISIS SPASIAL PERGERAKAN MASSA AIR DI LAUT HALMAHERA DAN LAUT BANDA MENGGUNAKAN METODE EMPIRICAL ORTHOGONAL FUNCTION (EOF) Fachrudy, Muhammad Adi; Munir, Rahmawati; Mandang, Idris
GEOSAINS KUTAI BASIN Vol. 1 No. 1 (2018)
Publisher : Geophysics Study Program, Faculty of Mathematics and Natural Sciences, Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/geofisunmul.v1i1.159

Abstract

The movement of water masses that occurred in the Indonesian Sea is the result of the interaction of two ocean, Pacific and Indian Ocean demonstrated by the change in salinity and temperature levels. Oceanographic research in Halmahera and Banda Sea have been carried out by analyzing changes in the level of temperature, salinity and currents on the surface of each season, West Monsoon and East Monsoon in 2010 by using Empirical Orthogonal Function (EOF). The verification of the data was done by comparing the temperature and salinity data were obtained from output of HYCOM model (Hybrid Coordinate Ocean Model) + NCODA Global 1/12 Reanalysis to observation data for 8 days in the Halmahera and Banda Sea. The results of the research showed changes in temperature and salinity that occurred in Halmahera Sea and have ranged between 28.5 ºC - 29 ºC and 34.1 psu - 34.6 psu was strongly influenced by water masses from the Pacific Ocean. The range of temperature and salinity have occurred during the West Monsoon, these water masses comes from the South Pacific moved towards Halmahera Sea brought by the New Guinea Coastal Current and that current was strong (1.06 m/s) at the time of East Monsoon took place in Indonesia. Unlike the Halmahera Sea, Banda Sea has a tendency to have temperature changes (26.9 ºC – 29.8 ºC) during the period of seasonal cycles that caused by its large region and the confluence of the water masses that come from Java Sea, Makassar Strait and affected by the temperature of Arafura Sea which has strong interaction from Indian Ocean.
Socialization of Making Egg Shell Powder as a Water Purifying Material in Senoni Village, Sebulu District, Kutai Kartanegara Regency Zarkasi, Ahmad; Ratnasari Putri, Erlinda; Nurhanafi, Kholish; Hamdani, Dadan; Perdana, Akbar; Nurohman, Ali; Munir, Rahmawati
Jurnal Inovasi Sains dan Teknologi untuk Masyarakat Vol. 1 No. 2 (2023): November
Publisher : Faculty of Mathematics and Natural Sciences, University of Jember. Jl. Kalimantan No.37, Krajan Timur, Jemberlor, Kec. Sumbersari, Jember Regency, East Java 68121

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/instem.v1i2.463

Abstract

The production of eggshell powder as a water purifier has the potential to be utilized in Senoni Village, Sebulu District, Kutai Kartanegara Regency, East Kalimantan. Based on the results of initial observations the majority of residents there use Mahakam river water for daily needs where the water is still classified as cloudy. The purpose of implementing Community Service Activities is through socializing the production and utilization of eggshell powder as a water purifier and providing assistance through training activities on the powder as a water purifier. The approach method used were the lecture method, demonstration method, and mentoring method. Furthermore, the stages of socialization implementation as a solution to overcome the problems are as follows: 1) sample preparation stage, 2) socialization preparation stage, 3) implementation stage, and 4) evaluation stage. The results of the activity showed that an increase of 84% of participants knew the procedure for making eggshell flour, and 60% felt that it was very easy to make so it was very possible for participants to make it independently at their respective homes. This activity went well and smoothly without any significant problems. Participants are interested and want to implement the new knowledge that has been obtained through this socialization method, scientific findings results, and a short conclusion. The abstract should only be typed in one paragraph and one-column format.
Analisis Laju Paparan Radiasi Pada Daerah Kerja di Instalasi Kedokteran Nuklir RSUD Abdoel Wahab Sjahranie Putri, Anisa; Zurma, Retno; Putri, Erlinda Ratnasari; Munir, Rahmawati
Progressive Physics Journal Vol 4 No 2 (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.v4i2.990

Abstract

An analysis of radiation dose rate has been conducted by using surveymeter Inspector Sn.46685 in the working area of the Nuclear Medicine installation at Abdoel Wahab Sjahranie Hospital. This study aims to measure the rate of radiation exposure and conduct an evaluation based on the control of the work area. Data collection is carried out in the room in the Nuclear Medicine installation. The measurement results showed that the rate of radiation exposure in the working area of nuclear medicine installations ranged from 0.09-21.56 μSv per hour. The radiation exposure rate obtained is still classified as below 10 μSv/h, but in the waste chamber the measurement obtained is relatively high because it exceeds 10 μSv/h.
Eksperimen Elastisitas Bahan yang Divariasi dengan Menerapkan Prinsip Cantilever Beam di Masa Pandemi Covid-19 Munir, Rahmawati; Amalia, Nadya; Rahman, Dui Yanto; Margaretta, Desiana Olenka; Putri, Erlinda Ratnasari
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 (1567.19 KB) | DOI: 10.30872/ppj.v3i1.952

Abstract

Saat ini pandemi Covid-19 telah menjadi faktor yang sangat berpengaruh dalam melakukan penelitian. Oleh sebab itu, umumnya penelitian yang dilakukan menyesuaikan kondisi sekarang dengan memanfaatkan alat dan bahan yang mudah diperoleh dan bisa dikerjakan dari rumah atau secara virtual. Pada penelitian ini dilakukan eksperimen elastisitas bahan berdasarkan prinsip Cantilever Beam yang bisa dilakukan di rumah. Preparasi sampel dilakukan dengan memotong kertas dengan variasi bentuk geometri dan densitasnya. Adapun geometri yang dipilih adalah persegi panjang dan trapesium. Persegi panjang divariasi densitasnya dengan variasi kertas polos, melapisi pilox sepanjang sampel dan juga pilox berselingan.Sementara yang berbentuk trapesium ditentukan dengan variasi polos dan dipilox sepanjang sampel. Eksperimen sederhana dilakukan dengan melakukan pemotretan pada sampel dengan sudut kelengkungan 00 , 450 dan 900 . Hasil pemotretan diolah dengan menggunakan aplikasi Video Tracker Analysis, Visual Basic Application dan fitting polynomial dengan Excel. Hasil yang diperoleh menunjukkan nilai modulus young setiap sampel tanpa harus melakukan pengukuran langsung dengan alat yang canggih serta bisa dilakukan di rumah selama pandemi Covid-19. Eksperimen ini berpotensi untuk dikembangkan lebih lanjut sehingga dapat menghasilkan metode baru dalam pengukuran elastisitas bahan.
Analisis Parameter Fisik Kualitas Air pada Depot Air Minum Isi Ulang (DAMIU) DI Kecamatan Tanjung Redeb Yanti, Nuri; Wardhani, Pratiwi Sri; Mislan, Mislan; Munir, Rahmawati; Hamdani, Dadan
Progressive Physics Journal Vol 4 No 2 (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.v4i2.1073

Abstract

DAMIU (Refill Drinking Water Depot) is an individual or group business that manages refill drinking water for public consumption directly filled on the spot and not in packaged form, this water must meet the standardization of drinking water quality requirements with one of its parameters, namely physical parameters that do not directly related to health, namely temperature, pH, total dissolved solids and electrical conductivity. This research was conducted to determine the quality of refill drinking water in Tanjung Redeb Subdistrict, whether it complies with the Regulation of the Minister of Health of the Republic of Indonesia Number 492/MENKES/PER/IV/2010 concerning drinking water quality requirements and to determine the effect of the duration of water storage on drinking water quality with parameters physical. This research was conducted in Tanjung Redeb District, Berau Regency and was carried out with 2 different water sources, namely drilled wells and PDAM. Water quality is measured using a TDS meter. Based on the research that has been done, the results of measuring the quality of refill drinking water in Tanjung Redeb District, Berau Regency, namely the water quality meets the standardization of the Regulation of the Minister of Health of the Republic of Indonesia Number 492/MENKES/PER/IV/2010 concerning drinking water quality requirements and the result is that the storage time for 15 days had an effect on changes in the values ​​of the parameters pH, TDS and DHL and even though they were stored for 15 days the quality still met drinking water quality standards while the temperature parameter had no effect.
Pengaruh Penurunan Aktivitas Cobalt-57 Terhadap QC (Quality Control) Harian SPECT (Single Photon Emission Computed Tomography) di Instalasi Kedokteran Nuklir RSUD A. W Sjahranie Samarinda Khalisha, Siti Nur; Zurma, Retno; Putri, Erlinda Ratnasari; Munir, Rahmawati; Intifadhah, Sahara Hamas
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.v4i1.984

Abstract

The utilization of radiation in the field of nuclear medicine uses several main tools, one of them is the gamma camera. In its use, the gamma camera must always be in prime condition in accordance with the regulation of the Badan Pengawas Tenaga Nuklir (BAPETEN) No. 17 of 2012. To ensure that the gamma camera is always in prime condition, it is necessary to carry out several QCs (Quality Control) within a certain period of time with reference to international standards and recommendations from manufacturers. QC results show the measured value still within the required range (acceptance criteria), so it can be said that the gamma camera is in prime condition and ready to be used. The Nuclear Medicine Installation of RSUD A. W Sjahranie Samarinda use Cobalt-57 flood source plates to measure extrinsic uniformity during daily QC. This study used data in the form of tables of extrinsic calibration measurements and verification measurements as well as graphs of Cobalt-57 activity against QC time with extrinsic calibration methods and verification measurements were shown in this study. The conclusion is the lower the activity, the longer the QC times. Besides, the QC times based on the extrinsic callibration and verification measurements are not much different.
Penentuan Nilai Diagnostic Reference Level (DRL) pada Pasien Abdomen menggunakan CT-Scan 128 di Instalasi RSUD A.W. Sjahranie Samarinda Jannah, Raudatul; Munir, Rahmawati; Putri, Erlinda Ratnasari
Progressive Physics Journal Vol 4 No 2 (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.v4i2.1028

Abstract

Diagnostic Reference Level (DRL) is a form of investigative level used as a tool to help optimize protection in radiation exposure for diagnostic and interventional procedures. In simple terms, DRL is the amount of dose that is set and becomes a reference in identifying the reception of high radiation doses received by patients for certain types of examinations. DRL aims to optimize the use of radiation in medicine and help avoid overexposure to radiation. The purpose of this study was to determine the local DRL value on the examination of the abdomen at the Radiology Installation of A.W. Sjahranie Hospital Samarinda. Data processing in this study was carried out with quantitative analysis techniques, namely descriptive statistics. This analysis technique used secondary data obtained from the results of recaptures or archival books for examination of the abdomen. Data processing was carried out with a measure of diversity through the calculation of the third quartile (Q3) in the data distribution. It was assumed that 75% of patients performed examinations with a common diagnosis. The results of these calculations are visualized in the form of a graph of the relationship of CTDIvol with the number of patients and a graph of the relationship of DLP with the number of patients. In the abdomen examination, a CTDIvol value of 12 mGy and a DLP value of 1545.5 mGy.cm. The conclusion obtained from this study is the DRL value at A.W. Sjahranie Hospital Samarinda is relatively low, but it still needs to be optimized by medical physicists.
Co-Authors Adrianus Inu Natalisanto Agus Anwar Ahmad Zarkasi Akbar Perdana Akbar Perdana akbarri, Destri amelia Alris Sanca Pratama Putra Amanda, Nia Amirin Kusmiran Andriana , Riska Dwi Anisa Putri Anugro, Fawwaz Apto Ar Rasyid, Muhammad Dhia Astuti, Fahmi Dadan Hamdani Dadan Hamdani Dadan Hamdani Dadan Hamdani, Dadan Darminto . Darminto Darminto David Bandhaso Djayus Ekaviyanti, Ekaviyanti Elfrida Dwi Saputri Erlinda Putri Erlinda Ratnasari Putri Euis Sustini Fachrudy, Muhammad Adi Fahmi Astuti, Fahmi Hafidz, Muhammad Fauzil 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 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 Sari, Syaharani Puspita Simanjuntak, Dani Josafat 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