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Strategi Pemberdayaan UMKM Melalui Penguatan Kelembagaan dan Menejemen Usaha Berbasis Ekonomi Hijau Arif Budianto; Susi Rahayu; Akhyar, Halil; Moh. Bahtiar; Hurnah; Alfina Taurida Alaydrus
Kreasi: Jurnal Inovasi dan Pengabdian kepada Masyarakat Vol. 5 No. 1 (2025): April
Publisher : BALE LITERASI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58218/kreasi.v5i1.1212

Abstract

This community service program aimed to enhance the institutional capacity and business management of MSME actors in Keroya Village, Aikmel District, East Lombok Regency through a green economy-based approach. The main challenges faced by local MSMEs included weak organizational structure, lack of financial recordkeeping, limited marketing strategies, and the absence of environmentally friendly practices in business operations. The activities were carried out through lectures, technical training, and direct mentoring involving the East Lombok Office of Cooperatives and MSMEs and the community service team from the University of Mataram. Evaluation was conducted using pre-tests and post-tests, participatory observation, and in-depth interviews. The results showed an increase in participants' understanding of the importance of institutional strengthening, business planning, and green economic principles. Several MSMEs began implementing financial recordkeeping, defining organizational roles, and initiating eco-friendly practices such as waste management and the use of recycled packaging materials. In conclusion, this program contributed to improving the independence of MSMEs and sustainable village business governance. The program’s outcomes also offer a potential model for replication in other villages aiming to develop local economies based on sustainability principles.
Synthesis and Characterization of TiO2/CaTiO3 Perovskite Composite Derived from Pinctada maxima Shell Waste Kurniawidi, Dian W.; Rahayu, Susi; Budianto, Arif; Saputra, Kormil; Agista, Wida Puteri; Suprayogi, Thatit; Marlina, Resti
Science and Technology Indonesia Vol. 10 No. 3 (2025): July
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.2025.10.3.924-942

Abstract

This study has succeeded in synthesizing and characterizing TiO2/CaTiO3 perovskite composites using calcium carbonate (CaCO3) from shellfish waste (Pinctada maxima). Synthesis was carried out through the coprecipitation method with variations in the molar ratio of CaCO3:TiO2 and calcination temperatures (700oC, 800oC, and 900oC). Characterization was carried out using FTIR, DTA-TG, XRD, SEM-EDS, BET and UV-Vis. The results of the analysis showed that the calcination temperature affected the powder color, crystal structure, thermal properties and particle size. The DTA-TG analysis shows that increasing the calcination temperature up to 900oC significantly reduces mass loss to 51.88%, with minimal thermal events, indicating the formation of a thermally stable and well-crystallized TiO2/CaTiO3 structure. At a temperature of 900oC, a more perfect CaTiO3 was formed with the whitest powder color, the anatase and brookite phases of TiO2 were still detected, while the calcite phase was still found at a temperature of 700oC. The morphology of the samples showed agglomeration with increasingly uniform particle sizes at higher calcination temperatures. Complementary BET analysis confirms that the composite possesses a mesoporous structure with a specific surface area of 11.42 m2/g and a pore size distribution of 3-5 nm, making it suitable for adsorption and photocatalytic applications. UV-Vis analysis showed an increase in the band gap value along with the increase in the TiO2 ratio. This is also confirmed by the presence of Urbach energy which tends to increase with increasing TiO2 ratio.
A Purification Process of Wosting Oil Using CaO Adsorbent Based on Blood Shell Shells (Anadara granosa) Nafsiatil Afro', Maulina; Rahayu, Susi; Ardianto, Teguh; Wijaya Kurniawidi, Dian
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i2.9234

Abstract

Blood clam shells are inorganic materials rich in  content obtained from heating  at high temperatures, so they can be used as adsorbent. The purpose of this study is to determine the effect of calcination temperature of blood clam shell adsorbents, used to test the quality of used cooking oil (wosting oil). In this study, three calcination temperature variations were used, namely 800 ℃, 900 ℃ and 1000 ℃ for 2 hours each. Then the quality of adsorbent was tested by knowing oxide element with SEM. The adsorption process was carried out using the contact method by immersing the adsorbent in wosting oil for one hour. Wosting oil that has been adsorbed is then tested for quality, namely: free fatty acid content, peroxide number, water content, viscosity, density, physical properties (odor and color). The results obtained are: The best quality of  adsorbent was obtained at a calcination temperature of 1000 ℃ which was analyzed through three parameters namely,  content, density value and surface area. The best quality of wosting oil is obtained in used cooking oil with 3 times heating with calcined adsorbent at 1000 ℃ which is analyzed based on several parameters as previously explained.
Pengujian Performa Sensor MAX30102 dengan Komparator Standar Klinis Nurfadilah; Budianto, Arif; Hadi, Kasnawi Al; Rahayu, Susi; Hasanah, Khofizzatul
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 6 No. 2 (2025): May
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v6i2.1028

Abstract

Saturasi oksigen dalam darah (SpO₂) adalah indikator vital yang menunjukkan efisiensi sistem pernapasan dalam mendistribusikan oksigen ke seluruh tubuh. Pemantauan SpO₂ sangat penting dalam deteksi dini gangguan pernapasan seperti penyakit paru obstruktif kronis (PPOK), asma, dan hipoksia. Penelitian ini bertujuan untuk mengembangkan sistem pemantauan SpO₂ berbasis sensor MAX30102 yang dikendalikan oleh mikrokontroler Arduino Uno. Kalibrasi sensor dilakukan menggunakan alat pulse oximeter medis standar untuk memastikan akurasi pembacaan. Pengujian dilakukan dalam kondisi lingkungan terkendali dengan suhu 20°C hingga 27°C. Hasil kalibrasi menunjukkan bahwa sensor MAX30102 memiliki tingkat akurasi tinggi dengan deviasi rata-rata kurang dari 2% dibandingkan alat medis referensi. Pengujian terhadap beberapa subjek menunjukkan bahwa sistem mampu mendeteksi kadar SpO₂ dalam rentang normal (95%-100%) maupun rendah (85%-90%), dengan hasil yang stabil dan konsisten. Dengan hasil yang telah diperoleh, sistem pemantauan kadar oksigen dalam darah berbasis sensor MAX30102 menunjukkan potensi besar dalam mendukung pemantauan kesehatan secara efisien, akurat, dan real-time. Namun, beberapa faktor eksternal seperti pergerakan pengguna, pencahayaan lingkungan, dan suhu tubuh dapat memengaruhi hasil pengukuran. Optimalisasi lebih lanjut diperlukan untuk meningkatkan ketahanan terhadap faktor eksternal dalam berbagai kondisi. Dengan pengembangan yang berkelanjutan, teknologi ini diharapkan dapat berkontribusi dalam meningkatkan kualitas layanan kesehatan dan memberikan manfaat luas bagi masyarakat.
INFLUENCE OF COMPOSITION AND LYOPHILIZATION TIME ON PHYSICAL PROPERTIES OF HA/Cs/Coll/ HYDROXYPROPYL METHYLCELLULOSE BIOCOMPOSITES FOR BONE SCAFFOLDS Purnaning, Dyah; Hurnah, Hurnah; Taufik S, Ahmad; Rahayu, Susi; Kurniawidi, Dian W.; Hadi, Kasnawi Al
Indonesian Physical Review Vol. 8 No. 2 (2025)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v8i2.474

Abstract

Biomaterial implants are one of the alternatives to replace damaged organs in the body system temporarily (scaffolding) or permanently. Bone biomaterial implants can be obtained through the manufacture of HA/Cs/Coll (HA/Cs/Coll) biocompositeses with the addition of Hydroxypropyl Methylcellulose (HPMC) matrix. The objective is to evaluate how variations in material composition and lyophilization time affect the physical properties of the biocomposites, including density, compressive strength, Young’s modulus, and surface morphology. The manufacture of  biocomposites uses the mechanical thermal method for mixing materials and the freeze drying method for the biocomposites drying process. Composition ratios of HA:Cs/Coll were varied at 3:7, 5:5, and 7:3, while lyophilization durations were set at 24, 48, and 72 hours. Characterizations were performed through density measurements, mechanical testing using a Tensilon machine, and surface morphology analysis using a digital microscope. The results showed that the comparison of biocomposites with a ratio of 7:3 had the highest density of 0.150 gr/cm³, compressive strength of 0.046 MPa, and young modulus of 0.3 MPa. Meanwhile, the biocomposites that was lyophilized for 48 hours showed the best balance between a density of 0.145 gr/cm³, a compressive strength of 0.08 MPa, and a young modulus of 0.17 MPa. Morphological analysis revealed improved porosity and surface uniformity with longer freeze-drying times. Based on this, the resulting HA/Cs/Coll biocompositese has potential as an implant material but further research is needed to improve its mechanical properties by increasing the concentration of the binder, namely HPMC.
Effect of Injectable Bone Substitute Preparation Formulation on Microscopic and Macroscopic Characteristics for Bone Graft Alaydrus, M. Mukaddam; Rahayu, Susi; Purnaning, Dyah; Isa A.A, Maz; Oktri P, Awanda; Taufik S, Ahmad
Jurnal Ilmiah Farmako Bahari Vol 16 No 2 (2025): Jurnal Ilmiah Farmako Bahari
Publisher : Faculty of Mathematic and Natural Science, Garut University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52434/jifb.v16i2.42506

Abstract

Biocompatible, mechanically stable, and easy-to-use injectable biomaterials are often needed for bone defects caused by trauma, disease, or surgery. This study aims to investigate the effect of polyvinyl alcohol (PVA) concentration on the microscopic and macroscopic characteristics of injectable bone substitute (IBS) formulations composed of Hydroxyapatite (HAp), chitosan, and PVA. The biopolymer chitosan was extracted from pearl oyster shell waste (Pinctada maxima), and HAp was synthesized via precipitation. The formulations were prepared with varied PVA concentrations (5%, 10%, and 15%) and evaluated for their structural, physicochemical, and functional properties. Fourier-transform infrared (FTIR) spectroscopy was employed to determine the presence of functional groups and molecular interactions. Results showed that increasing PVA content enhanced the intensity and sharpness of phosphate () bands, with Sample C (15% PVA) exhibiting the strongest interaction, indicated by a peak shift to 1047.32 cm⁻¹. Organoleptic observations revealed stable color across all samples, with increasing viscosity and paste-like consistency observed in higher PVA concentrations. Sample C had the highest viscosity (82.2 dPa·s) and the lowest injectability (92.43%), while Sample A exhibited the highest injectability (98.33%) and the lowest viscosity (2.79 dPa·s). Sample B (10% PVA) showed balanced characteristics with a viscosity of 38.93 dPa·s and injectability of 97.26%, aligning closely with ideal ranges for injectable biomaterials. Density measurements indicated that all samples approximated or exceeded the minimum density of healthy bone, with Sample C reaching 1.18 g/cm³. pH monitoring over 21 days revealed a consistent value of ~6, suggesting good chemical stability. These results demonstrate that the 15% PVA formulation achieves an optimal compromise between physicochemical properties and clinical applicability. This composite's injectability enables precise defect filling and promotes new bone formation, making it a superior and promising alternative as an injectable bone graft material in patients.
Pengujian Performa Sensor MAX30102 dengan Komparator Standar Klinis Nurfadilah; Budianto, Arif; Hadi, Kasnawi Al; Rahayu, Susi; Hasanah, Khofizzatul
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 6 No. 2 (2025): May
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v6i2.1028

Abstract

Saturasi oksigen dalam darah (SpO₂) adalah indikator vital yang menunjukkan efisiensi sistem pernapasan dalam mendistribusikan oksigen ke seluruh tubuh. Pemantauan SpO₂ sangat penting dalam deteksi dini gangguan pernapasan seperti penyakit paru obstruktif kronis (PPOK), asma, dan hipoksia. Penelitian ini bertujuan untuk mengembangkan sistem pemantauan SpO₂ berbasis sensor MAX30102 yang dikendalikan oleh mikrokontroler Arduino Uno. Kalibrasi sensor dilakukan menggunakan alat pulse oximeter medis standar untuk memastikan akurasi pembacaan. Pengujian dilakukan dalam kondisi lingkungan terkendali dengan suhu 20°C hingga 27°C. Hasil kalibrasi menunjukkan bahwa sensor MAX30102 memiliki tingkat akurasi tinggi dengan deviasi rata-rata kurang dari 2% dibandingkan alat medis referensi. Pengujian terhadap beberapa subjek menunjukkan bahwa sistem mampu mendeteksi kadar SpO₂ dalam rentang normal (95%-100%) maupun rendah (85%-90%), dengan hasil yang stabil dan konsisten. Dengan hasil yang telah diperoleh, sistem pemantauan kadar oksigen dalam darah berbasis sensor MAX30102 menunjukkan potensi besar dalam mendukung pemantauan kesehatan secara efisien, akurat, dan real-time. Namun, beberapa faktor eksternal seperti pergerakan pengguna, pencahayaan lingkungan, dan suhu tubuh dapat memengaruhi hasil pengukuran. Optimalisasi lebih lanjut diperlukan untuk meningkatkan ketahanan terhadap faktor eksternal dalam berbagai kondisi. Dengan pengembangan yang berkelanjutan, teknologi ini diharapkan dapat berkontribusi dalam meningkatkan kualitas layanan kesehatan dan memberikan manfaat luas bagi masyarakat.
Pengukuran Konsentrasi Coarse Particle di Ruangan dengan Sistem Kontrol Temperatur Udara Budianto, Arif; Juniarti, Rosita; Wirawan, Rahadi; Rahayu, Susi
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 2 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i2.595

Abstract

Particulate matter is an air emission that is compossed of particle and liqud dropplet. This suspension is easily measured in several size distributions: ultrafine particle, fine particle, coarse particle, and total suspended particle. Coarse particle is commonly used as a parameter of air quality index. This research aims to measure coarse particle concentrations inside an air-conditioned room. The measurement was conducted using a particulate sensor and a microcontroller for an hour. All measurements were varied into: active and non active room conditions. The results show that human activities and movements in the first variation has higher concentration than the second one. The difference is about 12 µg/m3. human activities have a significant role in the submicron particulate distribution inside a room. Air-conditioned room has higher concentration than a common room.
The Study of Effectiveness of Chitosan from Pearl Oyster (Pinctada maxima) Shell as Antibacterial in Bone Scaffold Application Alaydrus, Mukaddam; Purnaning, Dyah; Ansyori, Maz Isa; Septiani, Nonik; Alawiyah, Geby; Rahayu, Susi; Taufik, Ahmad
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): Januari - Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i1.8135

Abstract

Chitosan is a functional material with potential for bone scaffolds due to its antibacterial properties, biocompatibility, biodegradability, low toxicity, and ability to support tissue regeneration and prevent infections in graft implantation.This study aims to identify changes in functional groups in each isolation process and identify the effect of chitosan concentration  on the activity of Straphylococcus aureus and Escherichia coli bacteria. Chitosan isolation methods are demineralization, deproteination, decolorization, and deacetylation by microwave irradiation. Analysis of chitosan functional groups using FTIR, while antibacterial activity test using diffusion method. Isolation of chitosan from pearl oyster shells (Pinctada maxima sp.) obtained a degree of deacetylation of chitosan of 95.37%. Pearl oyster shell powder identified typical peaks of calcium carbonate (CaCO₃). The demineralized powder sample had calcium carbonate (CO₃²⁻) peaks that disappeared. Furthermore, the deproteinated powder sample produced peaks with amide groups (C=O dan N-H) of reduced protein. Decolorized powder samples did not show drastic changes in the bands of the deproteinated powder spectra, but the spectra could show cleaner and clearer peaks without any interference from pigments. The last, deacetylated powder sample showed a decrease in peak intensity in the 1650 cm⁻¹ (C=O amide). The analysis of the ability of chitosan to inhibit the growth of E. Coli and S. Aureus bacteria was effective at a minimum chitosan concentration of 20%. In comparison, antibacterial activity in S. aureus is better than in E. coli. Chitosan from this shell can serve as an antibacterial, but its manufacturing techniques need optimization for better efficacy.
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.
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