Frontiers in Sustainable Science and Technology
Journal Title Frontiers in Sustainable Science and Technology Frequency 2 issues per year (June and December) DOI Prefix 10.69930 ISSN 3089-2767 (Online-electronic) Publisher Science Tech Group Frontiers in Sustainable Science and Technology (FSST) is a peer-reviewed, open-access international journal committed to publishing cutting-edge research on the convergence of sustainability, science, health, technology, and engineering. FSST aims to provide an interdisciplinary platform for global scientists, researchers, and practitioners to share, discuss, and disseminate novel insights and innovations that address the pressing challenges related to sustainability. The journal welcomes contributions that focus on both foundational research and its application in solving real-world problems in environmental, technological, and industrial contexts. The overarching goal of FSST is to foster the development of sustainable solutions that promote sciences, engineering, and technology. Submission to first decision: 14–30 days | Peer-review speed: 14–30 days Publication time after acceptance: 1–14 days Index:
Synthesis of Chitosan, Carboxymethyl Cellulose, and Silica Membrane for Seawater Desalination as a Clean Water Source
This research is driven by the high salinity of seawater, which limits its use as a clean water source, necessitating eco-friendly desalination technology,. The objective was to synthesize a composite membrane based on chitosan (CS), carboxymethyl cellulose (CMC), and silica (SiO₂) and evaluate its effectiveness in seawater desalination,. The research employed a solution casting technique using 0.15 g chitosan, 0.05 g CMC, and 0.05 g silica, which were mixed homogeneously and dried at room temperature,. The results showed successful membrane formation with Si–O–Si and Si–O–C chemical bonds and electrostatic interactions between the polymers,. SEM analysis revealed a relatively homogeneous surface, while EDX confirmed a silicon composition of 2.23%,,. Desalination tests demonstrated a drastic reduction in TDS from 38,000 mg/L to meet clean water standards, with salinity dropping to 3.138 ppt and a stable pH of 7.8,. It is concluded that the CS-CMC/SiO₂ composite membrane is an effective and sustainable solution for seawater desalination in accordance with Permenkes No. 2 of 2023.
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GIS-based Flood Susceptibility Prediction using Google Earth Engine in Halmahera Tengah Regency, Indonesia
Flooding is a recurring hydrometeorological hazard in Halmahera Tengah Regency, North Maluku, causing environmental and socio-economic losses and highlighting the need for effective mitigation. This study aimed to develop a flood susceptibility map for the regency, which has lacked spatially based flood assessments despite frequent flood events. The analysis used a Geographic Information System (GIS) and Multi-Criteria Decision Analysis (MCDA) processed on Google Earth Engine, with five controlling variables: distance from permanent water bodies, elevation, Topographic Position Index (TPI), NDVI, and NDWI. The results show that Halmahera Tengah is dominated by moderate flood susceptibility, covering 125,458.40 ha or 56.40% of the area. High susceptibility covers 62,087.25 ha (27.91%), while low susceptibility covers 34,900.10 ha (15.69%). At the subdistrict level, flood susceptibility is unevenly distributed, with Weda Tengah, Weda Timur, and Weda Utara containing extensive moderate to high-risk zones. Model validation using ROC produced an AUC value of 0.827, indicating good model performance. The findings also align with the Sustainable Development Goals, particularly SDG 13.1 on climate and disaster resilience, SDG 11.5 on reducing disaster impacts, and SDG 15.3 on land degradation and land cover management. Overall, the study shows that flood susceptibility mapping can support spatial planning, improve disaster preparedness, and strengthen future flood risk reduction efforts in Halmahera Tengah Regency.
Management of Uterine Prolapse in a Crossbred Holstein Cow: A Case Report
Uterine prolapse is a critical postpartum emergency in cattle that demands immediate intervention, since the everted mass is highly vulnerable to trauma, contamination, and haemorrhage, and any delay in repositioning markedly worsens the prognosis. This report describes the diagnosis and successful management of a complete uterine prolapse in a five-year-old crossbred Holstein cow presented eight hours after her fourth calving. On examination, a large, oedematous, dark-red mass with visible caruncles protruded from the vulva, accompanied by intense straining, systemic weakness, and cold extremities, confirming a diagnosis of uterine prolapse. The animal was restrained and caudal epidural anaesthesia was administered at the first sacrococcygeal interspace (S5-Co1) to abolish straining and permit manipulation of the mass. Because the prolapsed tissue carried several lacerations with active bleeding points, the case was classified as complicated; all bleeding points were sutured with chromic catgut (2-0), the mass was cleansed with a potassium permanganate solution, manually repositioned into the pelvic cavity, and the vulva was closed with a modified Buhner-type suture using sterile infusion-set tubing as the retention material. Postoperatively, the cow received five days of supportive therapy comprising intravenous fluids, a non-steroidal anti-inflammatory drug, an antihistamine, a broad-spectrum antibiotic, calcium borogluconate, and vitamin B-complex. Recovery was uneventful, the retention suture was removed after one week, and no recurrence was observed over a two-month follow-up period. This outcome confirms that prompt epidural anaesthesia, careful haemostasis, and infusion-tubing vulval retention together allow a favourable prognosis even in a complicated presentation of bovine uterine prolapse.