Article Per Year (5 Year)
p-Index From 2021 - 2026
2.232
P-Index
This Author published in this journals
All Journal Indonesian Journal of Geography Indonesian Journal of Tropical and Infectious Disease JFA (Jurnal Fisika dan Aplikasinya) Dental Journal (Majalah Kedokteran Gigi) Science and Technology Indonesia Journal of Dentomaxillofacial Science Indonesian Journal of Chemistry Darmabakti Cendekia: Journal of Community Service and Engagements Journal of Electronics, Electromedical Engineering, and Medical Informatics Jurnal Abdi: Media Pengabdian Kepada Masyarakat Jurnal Layanan Masyarakat (Journal of Public Service) Journal Of Sustainability Perspectives Journal of Advanced Technology and Multidiscipline (JATM) Journal of Sustainability Perspectives Jurnal Pengabdian dan Pemberdayaan Masyarakat Indonesia
Retna Apsari
Universitas Airlangga
Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Medicine & Pharmacology Physics Public Health Social Sciences Other

Published : 22 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 22 Documents
Search

 1   2   3 
DIGITAL DETECTION SYSTEM DESIGN OF MYCOBACTERIUM TUBERCULOSIS THROUGH EXTRACTION OF SPUTUM IMAGE USING NEURAL NETWORK METHOD Arisgraha, Franky; Widiyanti, Prihartini; Apsari, Retna
Indonesian Journal of Tropical and Infectious Disease Vol. 3 No. 1 (2012)
Publisher : Institute of Topical Disease Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (154.924 KB) | DOI: 10.20473/ijtid.v3i1.200

Abstract

Tuberculosis (TBC) is an dangerous disease and many people has been infected. One of many important steps to control TBC effectively and efficiently is by increasing case finding using right method and accurate diagnostic. One of them is to detect Mycobacterium Tuberculosis inside sputum. Conventional detection of Mycobacterium Tuberculosis inside sputum can need a lot of time, so digitallydetection method of Mycobacterium Tuberculosis was designed as an effort to get better result of detection. This method was designed by using combination between digital image processing method and Neural Network method. From testing report that was done, Mycobacterium can be detected with successful value reach 77.5% and training error less than 5%.
BRADYCARDIA AND TACHYCARDIA DETECTION SYSTEM WITH ARTIFICIAL NEURAL NETWORK METHOD S, Delima Ayu; Arisgraha, Franky; Apsari, Retna
Indonesian Journal of Tropical and Infectious Disease Vol. 3 No. 2 (2012)
Publisher : Institute of Topical Disease Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (546.931 KB) | DOI: 10.20473/ijtid.v3i2.206

Abstract

Heart disease is one disease with high mortality rate in the world. Based on WHO records from 112 countries at 2004, the rate is 29% of all deaths each year. Medical devices are necessary to diagnose one's health as an indication of a disease. Nowadays, Indonesia still imports medical devices, for the diagnosis of heart failure, from abroad. This research aims to assist the monitoring of cardiac patients with bradycardia and tachycardia appearances of message condition patient's heart rate at the same time. The results were displayed with the output of bradycardia condition of the heart rate (heart rate less than 60 beats per minute) or tachycardia (heart rate over 100 beats per minute). The system displayed the data read from the heart to the PC embedded system to monitor the condition of the patients under decisions based on backpropagation neural network. Classification system could be performed quite well, training data and by testing the 10 pieces, the optimal weight gain was 1727 iteration, the learning rate was 0.1122, and the error was below 0.001 (0.0009997).
Tapping into the Power of Sol-Gel Method for Enhanced Antimicrobial Activity of Titania Nanoparticles Saputra, Kormil; Masruroh, Masruroh; Susanto, Hendra; Apsari, Retna
Science and Technology Indonesia Vol. 9 No. 3 (2024): 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.2024.9.3.546-555

Abstract

Increasing bacterial resistance to antibiotics has become a serious threat to global public health. In this context, this study aims to evaluate the antimicrobial activity of titanium dioxide nanoparticles (TiO2 NPS) synthesized using the sol-gel method. TiO2 NPS samples were prepared and characterized for morphology via field-emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD) analysis. Kirby-Bauer disc diffusion method was used to test the antimicrobial activity of TiO2 NPS against Gram positive bacteria Staphylococcus aureus, Gram negative bacteria Escherichia coli, and pathogenic fungus Aspergillus penicillioides. The results showed that TiO2 NPS effectively inhibited the growth of microorganisms, with significant inhibition zones especially against fungi. The antimicrobial mechanism of TiO2 NPS involves the formation of hydroxyl radicals and superoxide ions that damage the cell membrane of microorganisms. The implications of this study are the development of potential antimicrobial nanomaterials for biomedical and environmental applications, as well as the importance of considering the physical and chemical properties of TiO2 NPS in designing effective infection treatment strategies.
Surabaya International Community Services: Climate Resilience through Community Empowerment in Surabaya Fitriani, Nurina; Fatmawati, Fatmawati; Apsari, Retna; Megantoro, Prisma; Athari, Muhammad Hafizh
Journal of Sustainability Perspectives Vol 4, No 1: June 2024
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jsp.2024.20644

Abstract

Universitas Airlangga is fully committed to participating in achieving the SDGs through carrying out community service-based research that includes multidisciplinary knowledge, both from the realms of science and technology and social humanities. This commitment is realized in the implementation of the Surabaya International Community Service program which aims to provide an understanding of global issues that affect society today regarding climate change and the current environment, introduce green energy technology to the international community and encourage the adoption of green energy as an alternative energy source, as well as building a network of cooperation and collaboration between participants from various countries and to overcome global environmental problems. Universitas Airlangga encourages full efforts in realizing the thirteenth point of the SDGs, namely Handling Climate Change through a series of community-based learning activities, mangrove rehabilitation, and dissemination of solar panels as green energy.
Surabaya International Community Services: Climate Resilience through Community Empowerment in Surabaya Fitriani, Nurina; Fatmawati, Fatmawati; Apsari, Retna; Megantoro, Prisma; Athari, Muhammad Hafizh
Journal of Sustainability Perspectives Vol 4, No 1: June 2024
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jsp.2024.20644

Abstract

Universitas Airlangga is fully committed to participating in achieving the SDGs through carrying out community service-based research that includes multidisciplinary knowledge, both from the realms of science and technology and social humanities. This commitment is realized in the implementation of the Surabaya International Community Service program which aims to provide an understanding of global issues that affect society today regarding climate change and the current environment, introduce green energy technology to the international community and encourage the adoption of green energy as an alternative energy source, as well as building a network of cooperation and collaboration between participants from various countries and to overcome global environmental problems. Universitas Airlangga encourages full efforts in realizing the thirteenth point of the SDGs, namely Handling Climate Change through a series of community-based learning activities, mangrove rehabilitation, and dissemination of solar panels as green energy.
INTEGRATION OF RENEWABLE ENERGY AND IOT TECHNOLOGY FOR GEOTHERMAL TOURISM DEVELOPMENT IN PACITAN: INTEGRASI ENERGI TERBARUKAN DAN TEKNOLOGI IOT UNTUK PENGEMBANGAN WISATA GEOTHERMAL DI PACITAN Retna Apsari; Herri Trilaksana; Pujiyanto; Yoga Uta Nugraha; Muhammad Syahril Mubarok; Prisma Megantoro; Sri Endah Nurhidayati
Darmabakti Cendekia: Journal of Community Service and Engagements Vol. 6 No. 2 (2024): DECEMBER 2024
Publisher : Faculty of Vocational Studies, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/dc.V6.I2.2024.139-147

Abstract

Background: Pacitan Regency, located between hills, mountains, and waters, boasts abundant natural resources, including geothermal potential and renewable energy. However, its remote location, far from the capital of East Java, has led to underutilization of these resources, particularly in the tourism sector. Objective: This initiative aims to develop eco-friendly tourist destinations integrated with IoT technology to enhance Pacitan's branding and recognition. Method: The project involves planning through Forum Group Discussions (FGD) and socialization, followed by technical implementation, publicity, recruitment of local cadres, and signing of integrity pacts. Subsequent steps include strengthening local identity, implementation, and program monitoring and evaluation. Results: The partnership has effectively addressed challenges related to infrastructure and planning for renewable energy and IoT-based geothermal tourism while adhering to sustainable development principles. Conclusion: The activity was successfully executed, receiving strong support from regional figures. The material delivery was precise, the target participant numbers were met, and there was significant collaboration with local communities and universities. The project has not only helped local partners but also contributed to Pacitan's potential for sustainable tourism development.
UTILIZING 3D MAPPING PHOTOGRAMMETRY AND AIRFEEL WEATHER MONITORING FOR SOLAR AND WIND POWER PLANT DEVELOPMENT PLANNING ON GILI IYANG Megantoro, Prisma; Apsari, Retna; Nurrohma Hidayah, Nayu; Ananta Sari, Feby; Rania Khadijah, Alyssa; Dwi Cahyono, Heru; Abdilah, Waldi; Uta Nugraha, Yoga; Jamilatul Awalin, Lilik; Syahril Mubarok, Muhammad
Jurnal Layanan Masyarakat (Journal of Public Services) Vol. 8 No. 4 (2024): JURNAL LAYANAN MASYARAKAT
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jlm.v8i4.2024.476-485

Abstract

This article discusses community service activities on Gili Iyang Island, Sumenep, Madura, which focus on implementing appropriate technology in sensing the potential of renewable energy sources. Gili Iyang Island itself is an area that actively encourages the use of renewable energy. In this activity, maintenance and monitoring of data on AirFeel are carried out, including device checks and monitoring data accuracy levels through periodic calibration. Airfeel is used as a weather station to measure the potential of renewable energy, especially wind and solar energy. The potential for wind energy is considered from the speed and direction of the wind, while the potential for solar energy is considered from the level of solar irradiation. These parameters allow Airfeel to determine the optimal location for renewable energy generation based on weather conditions. Additionally, the DJI Phantom 4 Pro RTK drone was used for 3D Mapping Photogrammetry. This technology aids in creating three-dimensional maps that are considered in the planning and development of renewable energy power plants at the location. Implementing these two technologies can contribute to future planning for developing other renewable energy sources in Gili Iyang Island.
ELECTRIC BIKES FOR GREEN MOBILITY IMPROVEMENT IN GILI IYANG, MADURA Nugraha, Yoga Uta; Mubarok, Muhammad Syahril; Apsari, Retna
Jurnal Layanan Masyarakat (Journal of Public Services) Vol. 9 No. 2 (2025): JURNAL LAYANAN MASYARAKAT
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/.v9i2.2025.215-222

Abstract

This community service program is implemented in an island region that has limited access to electricity and fuel. This program is implemented on Gili Iyang Island, Sumenep, Madura. On the island, the only mode of transportation available is motorbikes and three-wheeled motorbikes due to limited and narrow roads. The price of gasoline reaches two to four times the normal price. Based on these conditions, the issue raised in this community service program is the use of electric bicycles for mobility, with the hope that it can also be a means of supporting the main tourist attraction of the island known as "Oxygen Island". This program is training for the community on how to assemble and maintain electric bicycles. The electric bicycles used in this program are designed with compact and flexible advantages, equipped with lithium batteries with a range of up to 30 km. In addition, there is a pedal assist feature to make it easier to pedal when needed, such as when going uphill or crossing sandy roads. For recharging electric bicycles, a solar shelter is provided, which helps save transportation costs. Training is provided through theoretical and practical materials. Participants can directly implement the theory that has been conveyed when practicing assembling bicycles. Based on the results of the pre and post tests, in general, there was an increase of 17-50% in the knowledge and skills of participants related to the assembly and maintenance of electric bicycles. This is a very strong belief that the Gili Iyang community has been able to use and maintain electric bicycles.
Green Synthesis of Selenium Nanoparticles from Okra (Abelmoschus esculentus) Extract with Characterization and Antioxidant Activity Susilo, Raden Joko Kuncoroningrat; Apsari, Retna; Hayaza, Suhailah; Cristian, Yeremia Budi; Prasetyo, Vania Griselda; Widianti, Imanda; Palmasih, Anastasia Alin; Jemon, Khairunadwa; Sajidah, Elma Sakinatus
Indonesian Journal of Chemistry Vol 25, No 4 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.104189

Abstract

Selenium nanoparticles (SeNPs) have gained attention in the medical field because of their enhanced bioactive properties and bioavailability. The green synthesis of nanoparticles offers an eco-friendly synthesis method. In this study, Abelmoschus esculentus (okra) extract was used for the green synthesis of SeNPs. The synthesized SeNPs were characterized using UV-visible (UV-vis), scanning electron microscopy-energy dispersive X-ray (SEM-EDX), Fourier-transform infrared spectroscopy (FTIR), and particle size analyzer (PSA). UV-vis analysis showed a peak at a wavelength of 288 nm, and the SeNPs demonstrated stability at low temperatures for up to 30 days. FTIR analysis indicated interactions between the pectin functional groups on okra and the surface of SeNPs. The SeNPs had a 6.48 nm diameter and polydispersity index of 0.13. A spherical morphology was observed in the nanoparticles. The antioxidant activity of SeNPs was evaluated using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS) methods. The results showed a dose-dependent increase in free radical inhibition with 31.44 and 15.37% by DPPH and ABTS tests, respectively. The green synthesis of SeNPs using okra extract produced nanoparticles with unique properties based on several characterization results. In conclusion, SeNPs exhibited promising antioxidant activity, highlighting their potential for biomedical applications.
IMPLEMENTATION OF HYBRID PLTS AND ELECTRIC BIKES AS AN EFFORT TOWARD GO GREEN TOURISM ON NGIROBOYO BEACH PACITAN Apsari, Retna; Nugraha, Yoga Uta; Megantoro, Prisma; Nurhidayati, Sri Endah; Pujiyanto, Pujiyanto; Samian, Samian; Supadi, Supadi; Firdauz, Grace Constella Anastasya; Na’imah, Syahidatun
Jurnal Layanan Masyarakat (Journal of Public Services) Vol. 9 No. 3 (2025): JURNAL LAYANAN MASYARAKAT
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/.v9i3.2025.329-340

Abstract

Ngiroboyo Beach in Pacitan Regency has great potential as a tourist destination because of its natural beauty. In addition to having a distinctive sea panorama and black sand, this beach also has interesting geothermal potential to be developed. The potential of Ngiroboyo Beach, which has not been widely explored, has led to this community service program being carried out to develop geothermal tourism destinations based on renewable energy, with a focus on increasing access to environmentally friendly electricity and improving tourism facilities. The stages of the activity include socialization, training, and mentoring for tourism awareness groups (Pokdarwis) regarding the use of renewable energy through the installation of hybrid PLTS and electric bicycles. The installed hybrid PLTS can produce an electricity capacity of around 400 Watts at peak lighting, as a concrete result of the implementation of this program. The electricity generated through the hybrid PLTS can be used for electricity loads for lights and sound systems to support tourism activities. The training was conducted to strengthen the capacity of the community in managing tourism facilities based on renewable energy. The evaluation results showed a positive response from the participants, who expressed high satisfaction with the implementation of the program. This program is expected to be the first step in promoting the concept of sustainable tourism in Pacitan Regency and supporting sustainable development goals (SDGs), especially in the fields of clean energy and sustainable infrastructure.
Co-Authors Abdilah, Waldi Ananta Sari, Feby Anita Yuliati Antik Widi Anugrah Ari Setiawan ARI SETIAWAN Arya Dwi Kustiawan Asti Meizarini Athari, Muhammad Hafizh Awalin, Lilik Jamilatul Azka Zakiyyatuddin Constella Anastasya Firdauz, Grace Cristian, Yeremia Budi Delima Ayu S, Delima Ayu Dwi Cahyono, Heru Fatmawati Fatmawati Firdauz, Grace Constella Anastasya Franky Arisgraha, Franky Hendra Susanto Herlan Darmawan Herlan Darmawan Herri Trilaksana Heru Dwi Cahyono Imam Suyanto irwan meilano Irwan Meilano Irzaman, Irzaman Jemon, Khairunadwa Kormil Saputra Listya Rhomdoni, Ardan M Yasin Maria Evita Maria Evita Masruroh MASRUROH Mitra Djamal Mitra Djamal Moh Yasin Mohammad Ghani Mohammad Yasin Mubarok, Muhammad Syahril Muhammad Rafi Nabil Arsalan Muhammad Syahril Mubarok Na'imah, Syahidatun Nayu Nurrohma Hidayah Na’imah, Syahidatun Nina Siti Aminah Nina Siti Aminah Noriah Bidin Nugraha, Yoga Uta NUrina Fitriani, NUrina Nurrohma Hidayah, Nayu P. Perdinan Palmasih, Anastasia Alin Prasetyo, Vania Griselda Prihartini Widiyanti Prisma Megantoro Pujiyanto Pujiyanto Pujiyanto Pujiyanto Pujiyanto Putra, Heriansyah Raden Joko Kuncoroningrat Susilo Rania Khadijah, Alyssa Rizki Putra Prastio Sajidah, Elma Sakinatus Samian Sensius Seno Siswanto Siswanto Sri Endah Nurhidayati Suhailah Hayaza Supadi Supadi Supadi Supadi Suryanto, Wiwit Syahril Mubarok, Muhammad Tahta Amrillah Trisnaningsih Trisnaningsih Umi Salamah Uta Nugraha, Yoga W. Harun, Sulaiman Wahyu Puri Wardhani Wahyu Srigutomo Wahyu Srigutomo Wahyudi Wahyudi Wahyudi Wahyudi Widianti, Imanda Yhun Yhuana, Yhosep Gita Yoga Uta Nugraha Yunardi, Riky Tri Zulkarnaen, M