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All Journal Jurnal Natur Indonesia Biotropika Asian Journal of Aquatic Sciences Jurnal Abdi Insani Bakti Cendana: Jurnal Pengabdian Masyarakat Journal of Rural and Urban Community Empowerment Aceh Journal of Animal Science Indonesian Journal of Environment and Disaster South East Asian Marine Sciences Journal South East Asian Aquaculture South East Asian Management Concern Journal Agriculture and Biological Technology Tropical Marine Environmental Sciences
Riswan, M
Department Of Marine Sciences, Faculty Of Marine And Fisheries, Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Nursing Physics Social Sciences Veterinary

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Education on Energy Efficient Underwater Light Emitting Diode (LED) Technology for Boat Lift Nets in Aceh Besar Ricky Winrison Fuah; Imelda Agustina; M. Riswan; Heni Rusminda; Yeni Safitri Gurki; Raji Ufranal Halim; Alvi Rahmah; Ivonda Vicana Pandang; Nurhayati; Inda Mardhatillah; Zahra Afranisa; Putri Julia Mizulni; Maretty Twentyna Dolorosa; Rosi Rahayu; Ilham Zulfahmi
Bakti Cendana Vol 9 No 1 (2026): Bakti Cendana: Jurnal Pengabdian Masyarakat
Publisher : LPPM Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/bc.v9i1.10021

Abstract

The coastal areas of Aceh Besar have high fisheries potential, but traditional fishermen using bagan boats in Gampong Lhok Layeun are facing declining catches due to technological limitations. The conventional lights used have limited light coverage and high fuel consumption. This service activity aims to improve the knowledge and skills of fishermen through education on energy-efficient underwater Light Emitting Diode (LED) technology as an alternative solution. The implementation method includes four stages: initial survey, socialisation, discussion, and evaluation and monitoring. The activity involved 25 participants consisting of fishermen, Panglima Laot, academics, and village officials. The results showed an increase in participants' understanding of underwater LED technology, with an average pre-test score of 57 increasing to 84 in the post-test. A total of 100% of participants expressed interest in adopting this technology, and showed high enthusiasm during the socialisation and discussion. This activity proves that participatory and educative approaches can strengthen traditional fisheries innovation at the local level.
ANALISIS KORESPONDENSI PADA POLA HUBUNGAN ANTARA JENIS BENCANA DAN STATUS KORBAN DI SUMATERA TAHUN 2024 Muhammad Al-Farisy; Riska Mulyani; M. Riswan; Tarisa Humaira; Lathifah Putri Adani
INDONESIAN JOURNAL OF ENVIRONMENT AND DISASTER Vol. 5 No. 1 (2026): Indonesian Journal of Environment and Disaster
Publisher : Disaster Research Center, Universitas Sebelas Maret, Surakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/ijed.v5i1.2670

Abstract

CORRESPONDENCE ANALYSIS OF THE RELATIONSHIP PATTERN BETWEEN DISASTER TYPES AND VICTIM STATUS IN SUMATERA IN 2024 This study analyzes the relationship between provinces, types of disasters, and types of disaster victims in 10 provinces on Sumatra Island using correspondence analysis. The data includes seven disaster types and five victim categories from Aceh, North Sumatra, West Sumatra, Riau, Riau Islands, Jambi, Bengkulu, South Sumatra, Bangka Belitung Islands, and Lampung. Descriptive results show floods as the most frequent disaster, while the "suffering victims" category appears most often. The chi-square test yields a p-value < 2.2e-16, indicating significant relationships between all variable combinations. The correspondence plot reveals distinct patterns: Lampung often faces extreme weather and earthquakes; West Sumatra and Riau are prone to landslides; Riau Islands and Aceh to forest and land fires; and Bengkulu to drought. Victim distribution also varies, West Sumatra reports more displaced victims, while most other provinces have predominantly suffered victims. In terms of disaster impacts, landslides are linked to fatalities, forest and land fires to displacement, and floods to suffering and missing victims. These findings highlight the interconnectedness of regions, disaster types, and victim impacts, offering important insights for disaster risk management and mitigation efforts across Sumatra.
Regulation of Jembrana Superficial Unit (JSU) Recombinant Protein Expression by IPTG Induction in Escherichia coli BL21 Maelani, Imelda; Ismail, Yulia Sari; Indriawati, Indriawati; Syahfitri, Widya; Mulyani, Riska; Foenna, Yudi Gebri; Riswan, M.
Biotropika: Journal of Tropical Biology Vol. 14 No. 2 (2026)
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.biotropika.2026.014.02.14

Abstract

Biotechnology frequently employs Escherichia coli to produce recombinant proteins. However, its efficiency is strongly influenced by induction conditions, particularly the quantity of isopropyl ?-D-1-thiogalactopyranoside (IPTG). This study aimed to evaluate the effect of different IPTG concentrations on the expression of recombinant Jembrana Superficial Unit (JSU) protein in E. coli BL21. The JSU gene cloned into the pET21a vector was induced at 37°C for 1 hour using three IPTG concentrations (0.3, 0.6, and 0.9 mM), each performed in triplicate. SDS-PAGE analysis confirmed successful expression of the recombinant JSU protein, indicated by a distinct band at approximately 37 kDa, consistent with its predicted molecular weight. Bacterial cells were lysed by freeze–thaw, and protein expression levels were quantified by spectrophotometry from optical density measurements and expressed in arbitrary units. Statistical analysis using one-way ANOVA, following confirmation of data normality and homogeneity of variance, revealed mean expression levels of 1.69 ± 0.15, 1.59 ± 0.11, and 1.76 ± 0.28 a.u. for 0.3, 0.6, and 0.9 mM IPTG, respectively, indicating a non-linear trend with a modest increase at the highest concentration. Nevertheless, there were no statistically significant differences between the treatments (p>0.05). These findings suggest that, within the tested range, variation in IPTG concentration does not significantly influence JSU protein expression under the applied conditions. Further optimisation, including a broader range of inducer concentrations and induction durations, is recommended to enhance the production of soluble, functional JSU protein.
Co-Authors agustina, imelda Alfinda, Rudi Alvi Rahmah Apriliani, Elisa Asri Mursawal Asri Mursawal Asri Mursawal Eka Lisdayanti Fuah, Ricky Winrison Gurki, Yeni Safitri Gusriansyah, Dimas Halim, Raji Ufranal Hayatun Nufus Hayatun Nufus Heni Rusminda Henni Syawal Iesje Lukistyowati Ilham Zulfahmi Imelda Agustina Inda Mardhatillah Indriawati, Indriawati Irwan Effendi Ivonda Vicana Pandang Karsih, Okta Rizal Lathifah Putri Adani M. Ali Darmawan Maelani, Imelda Maretty Twentyna Dolorosa Mega Novia Putri Muhammad Al-Farisy Mulyani, Riska Munandar Munandar Mursawal, Asri Nafisah Eka Puteri Nur Ikhlas Syuhada Nurhayati Putri Julia Mizulni Putri, Mega N. Putri, Mega Novia Putri, Rianti Raji Ufranal Halim Rianti Putri Riska Mulyani Ronal Kurniawan Ronal Kurniawan Rosi Rahayu Rusminda, Heni Salsabila, Nanda Shafira, Cut Nisa Sri Wahyuni Sri Wahyuni Sri Wahyuni Syahfitri, Widya Syahputra, Tomi Tarisa Humaira Usman M Tang Usman Muhammad Tang Windarti Windarti Yeni Safitri Gurki Yudi Gebri Foenna Yulia Sari Ismail Zahra Afranisa