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A development of an IoT-based temperature-TDS monitoring system for shrimp cultivation pond Akhyar, Halil; Budianto, Arif; Rahayu, Susi; Alaydrus, Alfina Taurida; Anggriani, Ni Ketut; Wardi, Palaivia Harman; Pranahita, Dewa Dwi; Andini, Mira
ORBITA: Jurnal Pendidikan dan Ilmu Fisika Vol 11, No 2 (2025): November
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/orbita.v11i2.36423

Abstract

High-quality water resources are important parameters for the sustainability of human civilization, the health of ecosystems, and the advancement of vital sectors. High-quality water is also needed for shrimp cultivation ponds. However, water-quality monitoring in the estuary is limited. In line with this, this study focuses on the design and implementation of an IoT-based TDS and temperature measurement system for estuarine water, aiming to develop an efficient, accurate, and automated prototype to support the fisheries sector in West Lombok regency. This study used a microcontroller, temperature and TDS (total dissolved solids) sensors, a wireless router, and a display. These elements were developed as a water-quality-level monitoring system based on TDS and temperature. The system was calibrated using a standard comparator before being examined under real conditions. The calibration procedure was conducted inside a controlled chamber at a water temperature of 25°C for 60 minutes, with a steady flow rate. All procedures were repeated three times and tested using a Student’s t-test. The IoT platform was tested using RSSI values with a 2s update interval. The calibration data were interpreted as a linear function between the standard and the developed system. The resulting design shows that the developed system can be installed at a shrimp cultivation pond with good performance. The designed system has a linearity of more than 90%. The system has a reliable accuracy level over 30 consecutive measurement days, resulting in the percentages of 85% to 93% (average = 91%). It can be concluded that IoT data communication via a wireless internet router performs well, with RSSI> -50 dBm for both sending and receiving. The IoT platform using ThingSpeak shows good performance (good stability), with a 2-second interval between data updates.
PENINGKATAN KESIAPSIAGAAN BENCANA EMISI UDARA PADA KELOMPOK MAJLIS TA’LIM BAITURRAHMAN PESONA BANYU ASRI MELALUI IMPLEMENTASI MANAJEMEN UDARA BERBASIS IOT Budianto, Arif; Alaydrus, Alfina Taurida; Akhyar, Halil; Rahayu, Susi; Hasanah, Khofizzatul; Nurfadilah, Nurfadilah; Andini, Mira; Pranahita, Dewa Dwi; Wardi, Palaivia Harman
Jurnal Abdi Insani Vol 12 No 10 (2025): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v12i10.3034

Abstract

Air emissions are a critical issue that can directly impact public health. The larger the emission source, the greater the potential for exposure to the resulting emissions. This problem is also faced by residents (partners) in the Pesona Banyu Asri neighborhood, Banyumulek, West Lombok Regency. Air pollution generated from many directions (four main sources) in the partner area (waste management at the Kebon Kongok landfill, plastic waste processing at BRIDA, waste processing into biofuel, and the pottery production process in the Banyumulek tourist village) is quite high, but the process of quantifying and characterizing emissions has not been implemented/studied in detail. Therefore, the purpose of this community service is to provide alternative solutions that can improve community preparedness regarding air emission disaster mitigation. The implementation method of community service activities is focused on PAR (participatory action research) techniques to improve social aspects of the community. The priority is to identify problems and provide alternative solutions related to the impact of air emission exposure due to emission source activities around the partner area. The IoT (Internet of Things)-based air management system developed by the community service team was previously implemented directly in the community, through stages of observation, socialization, training, installation, and final assessment. The results of the community service process can be seen from the questionnaire data quantification process, where there was a significant increase between before and after the community service activity. The readiness of the partner community increased by 62% regarding the ability to understand air mitigation, both in terms of understanding the types of air emissions, air purification systems, and the operation of the IoT-based air management system that is beneficial for partners.
OPTIMALISASI PERAN KLINIK BUMDES MELALUI PENDAMPINGAN PENYUSUNAN BUSINESS PLAN BERBASIS POTENSI LOKAL DI KABUPATEN SUMBAWA BARAT Buhari, Nurliah; Ichsan, Andi Chairil; Yuniarto, Kurniawan; Mustafid, Azhar; Rahayu, Susi; Raisa, Daeva
Jurnal Pepadu Vol 6 No 4 (2025): Jurnal Pepadu
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/pepadu.v6i4.8454

Abstract

Program pengabdian kepada masyarakat ini bertujuan untuk meningkatkan kapasitas pengelola Badan Usaha Milik Desa (BUMDes) di Kabupaten Sumbawa Barat melalui kegiatan pendampingan penyusunan rencana bisnis (business plan) berbasis potensi lokal. Metode yang digunakan meliputi identifikasi sumber daya desa, pelaksanaan lokakarya rencana bisnis, penyelenggaraan diskusi kelompok terpumpun (focus group discussion) dengan para pemangku kepentingan, serta pemberian pendampingan intensif dalam penyusunan dokumen rencana bisnis. Hasil kegiatan menunjukkan adanya peningkatan signifikan dalam pengetahuan dan keterampilan pengelola BUMDes, terutama dalam merancang strategi bisnis, melakukan analisis pasar, menyusun proyeksi keuangan, serta memahami pentingnya tata kelola yang transparan dan akuntabel. Dokumen rencana bisnis yang dihasilkan tidak hanya berfungsi sebagai panduan operasional, tetapi juga sebagai instrumen strategis untuk memperkuat posisi BUMDes sebagai penggerak ekonomi desa. Evaluasi lebih lanjut menekankan bahwa keberhasilan program tidak hanya terletak pada produk dokumen yang dihasilkan, tetapi juga pada implementasi strategi bisnis yang relevan secara kontekstual dan berkelanjutan. Dengan demikian, Klinik BUMDes berperan sebagai mitra strategis dalam memperkuat kapasitas institusional, meningkatkan daya saing, serta mendorong kemandirian ekonomi desa..
Optimalisasi Aktivitas Antibakteri Formulasi Hidrogel Kitosan Berbasis Jaringan Saraf Multilayer Perceptron dalam Bioteknologi Lingkungan Akhyar, Halil; Illahi, Ramadian Ridho; Hendrawan; Zubaidi, Ariyan; Bimantoro, Fitri; Hamidi, M. Zaenuddin; Rahayu, Susi
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 11 No. 3 (2025): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v11i3.947

Abstract

Pengembangan biomaterial antibakteri yang berkelanjutan sangat penting untuk kemajuan bioteknologi lingkungan dan meningkatkan pengendalian patogen. Komposit hidrogel berbasis kitin menunjukkan aktivitas antimikroba alami. Namun, penentuan formulasi optimal masih menjadi tantangan akibat interaksi nonlinier antara kitin, PVA, gelatin, dan honey (madu). Studi ini memperkenalkan jaringan saraf tiruan Multilayer Perceptron (MLP) sebagai kerangka kerja prediktif dan optimasi cerdas untuk menentukan komposisi hidrogel paling efektif terhadap Pseudomonas aeruginosa. Model MLP dilatih menggunakan dataset sekunder dan dievaluasi melalui R², MSE, RMSE, dan MAE untuk menilai akurasi prediksi dan kinerja generalisasi. Model mencapai R² sebesar 0.991 pada tahap pelatihan dan 0.914 pada tahap pengujian, menunjukkan kemampuan yang baik dalam menangkap hubungan variabel yang kompleks. Kemudian, optimasi berbasis grid mengidentifikasi formulasi optimal yang terdiri dari 0.06 g/mL kitosan, 0.05 g/mL PVA, 0.00 g/mL gelatin, dan 0.01 g/mL honey (madu), menghasilkan zona inhibisi maksimum sebesar 30.66 mm. Selain itu, validasi eksternal menunjukkan bahwa model MLP menghasilkan bias rata-rata sebesar 4.80%, melampaui Response Surface Methodologydan mengonfirmasi kemampuannya yang superior dalam pemodelan nonlinier. Hasil ini menunjukkan potensi jaringan saraf MLP sebagai salah satu algoritma pemodelan untuk mempercepat penemuan dan optimasi hidrogel antibakteri ramah lingkungan dalam aplikasi bioteknologi lingkungan.
Functionalization of Titanium Dioxide Nanoparticles in Anatase-Rutile Phases and Quartz Crystal Microbalance for Humidity Sensing Materials Mardiana, Laili; Fajriah, Baiq Nurul; Wirawan, Rahadi; Alaydrus, Alfina Taurida; Rahayu, Susi
Science and Technology Indonesia Vol. 11 No. 1 (2026): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2026.11.1.252-260

Abstract

A QCM (Quartz Crystal Microbalance) can be developed as a humidity sensor with a selective coating material. TiO2 (titanium dioxide) is a metal oxide with several crystal phases: anatase and rutile phases. However, there are few studies on the crystal phase investigation of a TiO2-based humidity sensor. Thus, this study aimed to develop a humidity sensor by functionalizing TiO2 particles with different crystal phases. The coating materials were prepared by ultrasonication. The synthesis was conducted by mixing 7 mL of TTIP (Titanium (IV) Isopropoxide) precursor in ethanol. This solution was stirred for 30 minutes, ultrasonicated, and heated for 16 hours to make a gel. The next step was a calcination process with two different temperatures to produce different crystal phases: 500oC (anatase) and 700oC (rutile). The synthesized powders were analyzed using XRD-SEM and coated onto the surfaces of the QCMs used as the developed sensors. These sensors were tested inside a chamber using a humidity control kit and a frequency counter (humidity levels: 57% to 92%). The results show that the rutile phase has a smaller particle diameter (252.672 nm) than the anatase phase (384.589 nm). The humidity sensing examinations indicate that the anatase-phase sensor has faster response-recovery times (19 seconds and 8 seconds) than the rutile-phase sensor (28 seconds and 50 seconds). It can be concluded that TiO2 particles in the anatase and rutile phases can be functionalized as a high-sensitivity coating material for a QCM humidity sensor.
Pentingnya Berpikir Ilmiah dalam Konseling Pastoral: Integrasi Epistemologis untuk Praktik yang Reflektif dan Bertanggung Jawab Anto Wahyu Prastyo, Andri; Rahayu, Susi
JOURNAL of THEOLOGICAL STUDENTS Vol. 14 No. 2 (2025): Regular Issue, Volume 14 Number 2 (2025)
Publisher : STT Kristus Alfa Omega

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37465/journaltheologi.v14i2.555

Abstract

Traditional pastoral counseling often relies on intuition or spiritual experience without a systematic methodological foundation, making it difficult to measure intervention effectiveness and limiting accountability in service. This study aims to explore the importance of scientific thinking in pastoral counseling practice as a means of epistemological integration between psychology and spirituality, to produce reflective and responsible practice. The method employed includes a literature review on counseling theories, scientific epistemology, and pastoral practice, as well as conceptual analysis on the application of scientific methodology in assessment and counseling interventions. The results indicate that applying scientific thinking enables pastoral counselors to evaluate intervention effectiveness objectively, reduce subjective bias, and strengthen professional service. Integrating scientific approaches with spiritual values also allows counselors to facilitate clients’ holistic growth, uniting psychological, social, and spiritual aspects. Thus, an ideal pastoral counselor functions as both a spiritual guide and a reflective scholar grounded in validated data, theory, and experience.
The Influence of the Tide Levels on the Water Electrical Conductivity Parameter in the Estuary Area: In-Site and Real-Time Measurement Alaydrus, Alfina Taurida; Budianto, Arif; Rahayu, Susi; Andini, Mira; Akhyar, Halil; Anggriani, Ni Ketut
Jurnal Pendidikan Fisika dan Teknologi (JPFT) Vol 11 No 2 (2025): July - December
Publisher : Department of Physics Education, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpft.v11i2.10881

Abstract

One area that requires attention in water quality studies is the estuarine ecosystem. Estuaries are transition zones connecting freshwater and marine waters, thus possessing unique environmental dynamics. However, there is limited information regarding the effect of sea tides in the area on local estuary water quality. Therefore, this study aims to identify the existing relationship between sea tide levels and EC values, using an IoT-based system that is portable, lightweight, and capable of operating in real time. This study was conducted over five days in Senggigi village, Batulayar, West Nusa Tenggara, Indonesia. The collected data focused on the EC parameter's water quality levels at different tide levels, which were monitored using the self-developed system. This system was developed using an EC sensor, a microcontroller, and a wireless internet router (for wireless data communication via ThingSpeak.com). This system was also equipped with a pH sensor, a TDS sensor, and a water temperature sensor. The recorded data show that the resulting data are valid and highly accurate, and that the system is ready for examination at the measurement area. The resulting data show that the correlation between tide level and EC value is logarithmic, with a regression coefficient of 0.934. The EC level was about 20.42 – 62.54 mS/cm, depending on the tide level. It can be concluded that the tide level indeed influences the EC parameter in the estuary area. Moreover, TDS plays an important role in regulating EC levels, underscoring the need to systematically measure this parameter in any estuarine water-quality study.
Characteristics of Dyeing Cotton Thread Using Fine Particle Powder from Tectona Grandis Leaf Dian W. Kurniawidi; Diah L. Dewi; Susi Rahayu; Arif Budianto; Siti Alaa
Jurnal Penelitian Pendidikan IPA Vol 9 No 10 (2023): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i10.3753

Abstract

In Lombok, the traditional process of dyeing woven fabrics primarily involves the use of synthetic dyes, which can contribute to environmental pollution. This study aimed to identify the characteristics of woven yarn and assess the effect of dye solution pH on yarn properties when using teak leaves (Tectona grandis) to produce dye powder through a mechanical thermal method. The thread coloring process comprised mordanting, coloring, and fixation stages, with the assistance of Android applications for color analysis and a Universal Tensile Machine Type RTG-1310 to assess mechanical properties. The results revealed that dyeing yarn with anthocyanin powder from teak leaves yielded a range of colors, including shades of gray, brown, and red. The highest tensile strength observed was 2,664 cN/dtex, and the solution's pH significantly influenced the dominant color, with red being prominent. Notably, optimal tensile strength (1,649 cN/dtex) was achieved at pH six. These findings highlight the potential for producing high-quality cotton threads using different dyeing processes and techniques. The study's insights contribute to both environmental protection and thread quality enhancement in the textile industry
Pengukuran Konsentrasi Emisi Partikulat di Ruang Tertutup Menggunakan Kit Pemantauan Kualitas Udara Mira Andini; Arif Budianto; Laili Mardiana; Susi Rahayu
Lambda: Jurnal Ilmiah Pendidikan MIPA dan Aplikasinya Vol. 5 No. 1 (2025): Lambda
Publisher : Lembaga Bale Literasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58218/lambda.v5i1.1227

Abstract

The increasing air pollution, particularly from fine particulate matter (PM_2.5), poses a significant challenge in maintaining indoor air quality. PM_2.5 is categorized as a small dust particle and suspended in the air, and easily inhaled, potentially causing health problems. This study aims to analyze indoor PM_2.5 concentrations based on cleanliness levels and human activity. Measurements were taken using a particle counter at 2-second intervals for 30 seconds under four conditions: clean room without occupants, dirty room without occupants, dirty room with occupants, and dirty room with additional activity. The results showed a clear increase in PM?.? concentration with greater activity, from 12.7 µg/m³ in clean rooms without people to 29.6 µg/m³ in dirty rooms with added activity. These findings indicate that human presence and physical movement significantly contribute to airborne fine particle levels. Therefore, the use of electrostatic filters is considered an effective and efficient solution for reducing fine particle concentrations and improving indoor air quality.
Sintesis dan Karakterisasi Injectable Bone Substitute Berbasis Cangkang Pinctada Maxima dengan Modifikasi Konsentrasi Polyvinyl Alcohol Susi Rahayu; Awanda Oktri P.M; M. Mukaddam Alaydrus; Ahmad Taufik S; Maz Isya A.A; Dyah Purnaning; Teguh Ardianto
Lambda: Jurnal Ilmiah Pendidikan MIPA dan Aplikasinya Vol. 5 No. 2 (2025): Lambda
Publisher : Lembaga Bale Literasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58218/lambda.v5i2.1615

Abstract

Bone damage caused by trauma or accidents, along with the limitations of conventional treatment methods, has driven the development of more efficient bone repair strategies. Injectable Bone Substitutes (IBS) offer a minimally invasive alternative with promising clinical potential. This study aims to investigate the physical and chemical characteristics of IBS synthesized from Pinctada maxima shell-derived bioceramics, with modified concentrations of polyvinyl alcohol (PVA) as a binder component. IBS formulations were prepared by varying PVA concentrations from 0% to 12%. The resulting materials were characterized by measuring viscosity, density, injectability, and pH to evaluate their suitability as injectable bone substitutes.The addition of PVA significantly influenced the properties of the IBS. Viscosity values ranged from 0.03 to 99.77 dPa·s, with all formulations exhibiting injectability above 90%. The density values varied between 0.219 and 1.01 g/cm³, while pH values were close to neutral (around 6). The 10% PVA formulation exhibited the most favorable characteristics, with a viscosity of 25.80 dPa·s and injectability of 98.82%, suggesting optimal performance for physiological application. The modification of PVA concentration effectively tailors the physical properties of IBS materials. Further research is recommended to include setting time analysis and more in-depth pH and injectability studies to validate the material’s potential as a biocompatible injectable bone substitute.
Co-Authors ABDUL GANI Abdul Gani abdurrouf Abdurrouf Afiatul Hafifah Agista, Wida Puteri Agus Saputra Agus Wahid H Ahmad Risandi F. Ahmad Taufik Ahmad Taufik S Ahmad Taufik S Alaa', Siti Alaa, Siti Alaa, Siti Alawiyah, Geby Alaydrus, Alfina T. Alaydrus, M. Mukaddam Alaydrus, Mukaddam Alda Berlian Alfina Alaydrus Alfina Taurida Alaydrus Alhadi, Kasnawi Alimuddin Alimuddin Amrul Ikhsan Andini, Mira Anggie Dwi P. Anggriani, Ni Ketut Ansyori, Maz Isa Anto Wahyu Prastyo, Andri Arif Budianto Arif Budianto Arif Budianto Arif Budianto Arzyl Akbar Aulia Safitri Destrianingtyas Awanda Oktri P.M B. Hilda Nida Alistiqlal Baiq Niswatul Khair Baiq R. S. Yusuf Bakti Sukrisna Bambang Sumardjoko Cahyawati, Triyana Dyah Christopher Yudha Erlangga Deasy Mariyani Desti Olga Safitri Destrianingtyas, Aulia Safitri Dewi Handayani Dewi, Diah L. Diah L. Dewi Dian W Kurniawidi Dian W. Kurniawidi Dian W. Kurniawidi Dian Wijaya Kurniawidi Dian Wijaya Kurniawidi Dian Wijaya Kurniawidi Djoko H Santjojo Djoko H. Santjojo Dodi Mariadi Dyah Purnaning Eka Rahmawati Eka Rahmawati Enggar Juwanda K. Ervina Sandra Dewi Eva Nurhaliza Eva Nurhaliza Fadli Robiandi Fajarica, Shinta Desiyana Fajriah, Baiq Nurul Fajriyah, Putri Arifatul Fidya, Karina Alma Fitri Bimantoro Habib Ridwansyah Hadi, Kasnawi Al Halil Akhyar Hamidi, M. Zaenuddin Hamidi, Mohammad Zaenuddin Handayana, I Gusti Ngurah Yudi Handayana, I Gusti Ngurah Yudi Hasanah, Khofizzatul Hendrawan Hidayatullah, Kholik Hiden - Hiden Huan Ahmad T. Hurnah Hurnah Hurnah Hurnah, Hurnah I G N Yudi Handayana I Wayan Sudiarta Ichsan, Andi Chairil Intan Utami Intan Utami Isa A.A, Maz Iwan Sumarlan Juniarti, Rosita Kasnawi Al Hadi Khusnul Khotimah Kormil Saputra Kurniawan Yuniarto Kurniawidi, Dian W Kurniawidi, Dian W. Kurniawidi, Dian Wijaya Lahir, Sri Laili Mardiana Lalu A Didik Lalu A Didik Lalu A. Didik Lalu Sahrul Hudha Legi Aprila Lily Maysari Angraini Liza Umitasari M. Mukaddam Alaydrus Mammi Dwi R. Marlina, Resti Marzuki Marzuki Marzuki Marzuki Masruroh Masruroh Maulana, Sutan Fajri Maz Isya A.A Mira Andini Moh. Bahtiar Muh. Alfaris Muhamad Ali Muhamad Ali Muhamad Ali Muhamad Amin Muhamad Amin Muhammad Fajrin Mustafid, Azhar Nadila Rahmawati Nafsiatil Afro', Maulina Nurfadilah Nurfadilah Nurfadilah Nurhidayati Nurhidayati Nurlaili Nurlaili Nurliah Buhari Nurmaulida, Siti Ema NURUL QOMARIYAH Oktri P, Awanda Pranahita, Dewa Dwi Purnaning, Dyah Putraji, L.M. Guguh Raisa, Daeva Ramadian Ridho Illahi Ramaditia Dwiyansaputra Reza Alfian Rohani Sayuti Rubi'ah, Siti S., RR. Delima sasabila, sasabila Septiani, Nonik Setyawan P Sakti Setyawan P. Sakti Shomad, Moh Abdul Sinta Devi Hariyanti Siti Alaa Siti Alaa Siti Alaa` Siti Alaa’ Siti Rubi’ah Sri Mulyani Suhayat Minardi Suhayat Minardi Syamsuddin Syamsuddin Syamsuddin Syamsuddin Syamsuddin Teguh Ardianto, Teguh Thathit Suprayogi Venessa Agusta Gogali Wahana, Lidia Wahyudi, Sopian Ari Wardi, Palaivia Harman Wijaya Kurniawidi, Dian Wirawan, Rahadi Wirawan, Rahadi Zahrah Ramadlan Mubarokah Zubaidi, Ariyan