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All Journal Majalah Ilmiah Teknologi Elektro Physics Student Journal Jukung (Jurnal Teknik Lingkungan) SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Jurnal Pengabdian Magister Pendidikan IPA EIGEN MATHEMATICS JOURNAL Prisma Sains: Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Jurnal Pepadu Wahana Fisika : Jurnal Fisika dan Terapannya Majalah Ilmiah Teknologi Elektro
Lalu Sahrul Hudha
Program Studi Fisika, FMIPA, Universitas Mataram
Religion Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology 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 Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Identification of Lightweight Concrete Characteristics Based on Density, Compressive Strength, and Absorbency Values with the Addition of Fly Ash and Glass Waste Aggregates Putraji, Lalu M. Guguh; Kurniawidi, Dian Wijaya; Hudha, Lalu Sahrul
KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Vol 10 No 01 (2025): KONSTAN (Jurnal Fisika dan Pendidikan Fisika)
Publisher : Universitas Islam Negeri (UIN) Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/konstan.v10i01.723

Abstract

Fly ash and glass waste can pose a significant environmental problem, as they cannot naturally decompose in the environment. This occurs due to the presence of pozzolan and silica in the waste. The purpose of this study is to categorize lightweight concrete and evaluate its properties, including density, compressive strength, and water absorption when incorporating additional fly ash and glass waste. This research uses experimental methods in the laboratory with a total of 72 samples with dimensions (25x25x50) mm in the form of blocks. Concrete samples were divided into two variations of storage duration, namely 21 days and 28 days, and given the same treatment and testing. The fly ash mixture variations used in this study were 0%, 20%, 40%, and 60%, with each variation consisting of 3 samples. The results obtained in this study indicate that, when viewed in terms of age, concrete with a storage period of 28 days exhibits better quality than concrete with a 21-day storage period. Based on the density value, both 21-day-old and 28-day-old concrete samples fall within the quality category of lightweight concrete, as per category A. When viewed from the compressive strength value, 21-day-old and 28-day-old concrete are of C quality. Regarding water absorption, the best value is achieved by the concrete mix with a 20% fly ash content and an 11% water absorption rate. When compared with concrete samples that do not contain fly ash, it is known that the test results on concrete samples without fly ash (0%) have higher compressive strength and density values, and the percentage of water absorption is by SNI standards.
A ZE25A-O3 Sensor-Based Solution for Continuous Ozone Level Measurement in LINAC Environments Khasanah, Nur; Hudha, Lalu Sahrul; Jamiluddin, Jamiluddin; Ernita, Nevi; Bunawas, Bunawas; M, I Wayan Ari; Subroto, Rinarto
Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Vol. 13 No. 4: October 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-ps.v13i4.16540

Abstract

Abstract Ozone (O₃) generated during LINAC operation can accumulate indoors and pose respiratory risks, yet many facilities lack continuous monitoring. We designed and validated a low-cost, electrochemical sensor platform—ZE25A-O₃ integrated with an Arduino Mega, on-board logging, and a Nextion HMI—for real-time surveillance in a LINAC suite. The sensor was calibrated at 24 °C and 40% RH against 0.5–1.5 ppm standards, yielding slope = 1.045, intercept = −0.04067 ppm, R² = 0.99984, and RMSE = 9.39 ppb, supporting reliable low-ppb quantification. Time series were aggregated into 30-min bins with centered 1-h rolling means to extract diurnal structure while suppressing short-term fluctuations. Field measurements showed a 20–30 ppb background with intermittent spikes exceeding 100 ppb (peaks ~150 ppb). A reproducible daily pattern emerged: late-morning minima (~20–21 ppb) followed by evening enhancement (~26–28 ppb), consistent with ventilation and operational schedule. Average conditions were below the Indonesian workplace limit of 100 ppb, but episodic exceedances motivate real-time alerts and ventilation management. This work demonstrates a practical approach for continuous exposure assessment and data-informed environmental control in radiotherapy facilities.
Solution of The Duffing Equation Using Exponential Time Differencing Method Illahi, Ramadian Ridho; Marzuki, Marzuki; Hudha, Lalu Sahrul
Eigen Mathematics Journal Vol 7 No 1 (2024): June
Publisher : University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/emj.v7i1.195

Abstract

To describe the spring stiffening effect that occurs in physics and engineering problems, Georg Duffing added the cubic stiffness term to the linear harmonic oscillator equation and is now known as the Duffing oscillator. Despite its simplicity, its dynamic behavior is very diverse. In this research, the Exponential Time Difference method is introduced to solve the Duffing oscillator numerically. To formulate the ETD method, we were using the integration factors. It is a function which, when multiplied by an ordinary differential equation, produces a differential equation that can be integrated. This method is an effective numerical method for solving complex differential equations, especially equations that have strong non-linearity The ETD method delivers highly accurate numerical solutions for the Duffing oscillator, with minimal discrepancy from the analytical results. Through parameter variation, the ETD method's applicability extends to diverse Duffing oscillator configurations.
MENDUKUNG NTB DALAM PROGRAM NZE 2050 DENGAN EDUKASI 6R (REFUSE, REDUCE, REUSE, RECYCLE, RETHINK, and ROT) UNTUK SAMPAH PLASTIK DI SMA N 2 SELONG, LOMBOK TIMUR Putraji, L.M. Guguh; Ardianto, Teguh; Budianto, Arif; Hudha, L. Sahrul; Rahayu, Susi; Kurniawidi, Dian W.
Jurnal Pepadu Vol 5 No 4 (2024): Jurnal PEPADU
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/pepadu.v5i4.6052

Abstract

Sampah secara umum dihasilkan dari kegiatan manusia sehari-hari. Dari berbagai jenis sampah, sampah plastik merupakan sampah non-organik yang paling banyak dihasilkan, tidak dapat diurai secara alamiah, dan memiliki dampak bagi kesehatan maupun lingkungan. Kabupaten Lombok Timur, memproduksi sampah terbanyak setiap harinya di Provinsi Nusa Tenggara Barat. Usaha mengurangi sampah perlu didukung oleh kesadaran masyarakat untuk mengurangi sampah dan memilah sampah sehingga dapat mengurangi beban pengelolaan sampah yang dilakukan oleh pemerintah daerah, terlebih setelah pemerintah propinsi NTB menggaungkan program Net Zerowaste Emission Tahun 2050. SMA N 2 Selong merupakan salah satu sekolah di wilayah Selong Lombok Timur yang diharapkan mampu menjadi pionir dalam edukasi pengembangan kesadaran diri sehingga memiliki peran yang sangat stategis untuk mengedukasi masyarakat. Oleh karena itu, untuk mengatasi permasalahan sampah perlu dilakukan edukasi pemilahan sampah plastik di lingkungan sekolah. Bahkan perlu diperkenalkan manfaat mendaur ulang sampah karena hal ini akan menunjukkan animo generasi muda dalam mewujudkan program zero waste di lingkungan SMA N 2 Selong, dan nantinya diharapkan pada generasi muda di seluruh wilayah Lombok Timur. Kegiatan ini diikuti oleh siswa kelas X, XI dan XII sejumlah 54 siswa terpilih dan hampie seluruh guru SMA N 2 Selong dengan respon Sangat Memuaskan.
Inovasi edukasi kesehatan yang efektif dan interaktif menggunakan teknologi Play on Demand dan Broadcast (PODCAST) Akhyar, Halil; Fajriyah, Putri Arifatul; Wirawan, Rahadi; Ali, Muhamad; Hudha, Lalu Sahrul; Alaydrus, Alfina Taurida; Mardiana, Laili; Rahayu, Susi
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 8, No 2 (2024): June
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v8i2.24669

Abstract

AbstrakSaat ini, promosi media untuk meningkatkan kesadaran masyarakat akan pola hidup sehat menjadi tantangan tersendiri di pemerintah daerah, seperti Dinas Kesehatan (Dinkes) di Provinsi Susa Tenggara Barat. Organisasi ini masih menerapkan ukuran konvensional dalam melakukan program promosi, seperti Radio, Surat Kabar, Flyer, dan lain-lain. Hal ini belum bisa menjangkau seluruh responden, terutama generasi muda yang seharusnya mengakses media sosial. Tujuan dilakukannya konten podcast adalah untuk memperluas jangkauan responden remaja melalui penerbitan video edukasi kesehatan di YouTube. Adapun metode yang digunakan dalam pelaksanaan pengabdian yaitu pendekatan participatory rural appraisal, serta pendekatan persuasive dan edukatif. Kegiatan dibagi dalam 3 tahapan penting yaitu persiapan, pembuatan konten, dan evaluasi. Hasil kegiatan pengabdian menunjukkan bahwa pembuatan konten youtube edukasi Kesehatan melalui podcast telah berhasil dilakukan dan dapat diakses pada https://www.youtube.com/@dinaskesehatanprovinsintb3184/videos. Berdasarkan hasil diskusi, program diberi nama SENIN SEHAT sesuai arahan pemerintah provinsi NTB kepada seluruh Organisasi Perangkat Daerah (OPD) terkait. Program telah menghasilkan Sembilan episode diantaranya hubungan komunikasi dan kesehtan, pemberian makanan pendamping air susu ibu, waspada kasus demam berdarah, dll. Oleh karena itu, podcast ini menjadi salah satu inovasi untuk melakukan edukasi secara efektif dan interaktif kepada masyarakat. Kata kunci: media informasi; senin sehat; teknologi informasi; teknologi komunikasi Abstract Recently, the media promotion to enhance citizens' awareness of healthy lifestyles has become a challenge in the local government, such as the West Susa Tenggara Province health department. The organization still applies conventional measurements to promote programs such as radio, newspapers, and flyers. The previous approach could only reach some respondents, especially young people who are supposed to access social media. The aim of establishing podcast content is to expand the reach of teenage respondents through publishing health education videos on YouTube. The methods used in implementing the service are the participatory rural appraisal approach and the persuasive and educational approach. Activities are divided into three critical stages: preparation, content creation, and evaluation. The results showed that creating health education YouTube content through podcasts was successfully carried out and can be accessed at https://www.youtube.com/@dinaskesehatanprovinsintb3184/videos. Based on the discussion, the program was named SENIN SEHAT according to the direction of the NTB provincial government. The program has produced nine episodes, including communication and health relations, providing complementary foods with breast milk, alerting for dengue fever cases, etc. Therefore, this podcast is an innovation that offers effective and interactive education to the public. Keywords: information media; healthy monday; information technology; communication technology.
Co-Authors Akhyar, Halil Alfina Taurida Alaydrus Arif Budianto Azhari, Mohammad Rasyidi Bunawas Bunawas Bunawas Bunawas Dian Wijaya Kurniawidi Didik Rahadi Santosa Ernita, Nevi Fajriyah, Putri Arifatul Hiden I Wayan Sudiarta Intan Utami Jamiluddin, Jamiluddin Kurniawidi, Dian W. Kurniawidi, Dian Wijaya M, I Wayan Ari Mardiana, Laili Marzuki Marzuki Marzuki Marzuki Masruroh MASRUROH Muhamad Ali Nur Khasanah Nur Khasanah NURUL QOMARIYAH Nurul Qomariyah Putraji, L.M. Guguh Putraji, Lalu M. Guguh Rahadi Wirawan Ramadian Ridho Illahi Reza Alfian Rinarto Subroto Setyawan Purnomo Sakti Setyawan Sakti Suhayat Minardi Susi Rahayu Syamsuddin Syamsuddin Teguh Ardianto, Teguh Wirawan, Rahadi Wirawan, Rahadi