The urban water supply system in tropical countries faces various physical risks, including pipe failures due to aging, material type, soil conditions, flooding, extreme weather events, and traffic loads. This study focuses on urban water supply risks for eight zones of Brunei-Muara district. A risk assessment using a data-driven matrix reveals Zones D2 and D6 as very high-risk areas, experiencing monthly average leaks of 880 and 471, respectively. These zones, characterized by low elevation and susceptibility to flooding during heavy rainfall, pose significant threats to water quality and public health due to the potential contamination of drinking water. Analysis of pipe data highlights that pipes with a diameter of 100 mm are more prone to leaks, with ductile iron pipes being particularly susceptible to failures. Brunei is actively exploring the implementation of digitalization and advanced technologies such as the application of GIS, deploying real-time water quality sensors, and real-time pressure monitoring integrated with SCADA systems to mitigate these risks.
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http://dx.doi.org/10.1038/s41598-025-88922-4 | DOI Listing |
Environ Technol
March 2025
Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing, People's Republic of China.
The structural and abundance changes in water disinfected by tea polyphenols were investigated in high-abundance microbial communities (HAMC), medium-abundance microbial communities (MAMC), and low-abundance microbial communities (LAMC), also included the interactions within and between these communities. The antibacterial effect of tea polyphenols was observed at concentrations of 20-300 mg/L. If the tea polyphenols concentration is greater than or equal to 200 mg/L, it can continue to inhibit the growth of bacteria, and keep the total number of bacteria in 48 hours no more than100 CFU/ml, and this reflected the continuity of tea polyphenols disinfectant in the pipe network.
View Article and Find Full Text PDFInt J Environ Health Res
March 2025
Faculty of Health Sciences, Hokkaido University, Sapporo, Japan.
Hand hygiene is an essential behaviour that significantly enhances public health, especially in resource-limited settings with inadequate water supply and sanitation services. However, hand hygiene practices and access to facilities remain a challenge. We aimed to assess handwashing facilities and practice of hand hygiene in a peri-urban community of Zambia - Southern Africa.
View Article and Find Full Text PDFHealthcare (Basel)
February 2025
School of Healthcare Management, Tsinghua University, Beijing 100190, China.
the current study investigates the link between health insurance coverage and child nutritional status in Pakistan. Using data from the Pakistan Demographic and Health Survey (PDHS) 2017-18, encompassing 4499 children under 5, a binary logistic regression was applied to analyze the relationship between health insurance and child nutritional status. Due to the non-randomized sample, assessing health insurance continuously posed a practical challenge.
View Article and Find Full Text PDFPolymers (Basel)
February 2025
Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas, PROBIEN (CONICET-UNCo), Universidad Nacional Del Comahue, Buenos Aires 1400, Argentina.
The presence of silver nanoparticles (AgNPs) in water bodies has emerged as a new environmental concern and the efficient separation of these nanoparticles remains a critical challenge. Here, we developed novel magnetic nanoflocculants for the recovery of AgNPs from water. Alternating layers of biopolymers, in particular, chitosan, alginate, and polymeric bio-based soluble substances (BBS) derived from urban waste, were coated on magnetic nanoparticles via the layer-by-layer technique to prepare reusable magnetic nanoflocculants (MNFs).
View Article and Find Full Text PDFPolymers (Basel)
February 2025
School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450045, China.
A fast-melting epoxy resin styrene-butadiene-styrene composite modifier (ER-SBS-T) was utilized for the rapid modification of an asphalt binder. The effect of this novel fast-melting modifier on high-temperature performance is not supported by any pertinent investigations. First, the penetration, softening points, and 60 °C kinematic viscosity of the asphalt samples were tested.
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