Results 21 to 30 of about 92,973 (284)

The Cost Equation of Sewage Services in Romania [PDF]

open access: yesOvidius University Annals: Economic Sciences Series, 2020
The aim of the research is to achieve a multiple linear regression related to the cost of the sewerage service. This cost equation allows us to analyze the effect of changing the cost elements in the tariff structure of sewerage and wastewater treatment,
Árpád-Zoltán Fulop   +1 more
doaj  

'Pollute the bay and poison the people': A short history of the Green Point marine sewage outfall, 1882–1992

open access: yesSouth African Journal of Science, 2020
The City of Cape Town in South Africa pumps 40 million litres of untreated sewage into the Atlantic Ocean from the Green Point outfall pipeline every day.
Neil Overy
doaj   +1 more source

Operation and maintenance financial feasibility analysis of centralized domestic wastewater treatment system (case study: Palembang City Sewerage Project)

open access: yesPrzegląd Naukowy Inżynieria i Kształtowanie Środowiska, 2021
Budget needed for operation and maintenance of centralized domestic wastewater management in Indonesia is often overlooked. This results in fail systems, high idle capacity, and abandoned assets. While the economic feasibility often used as the basis for
Larap K. Estu   +2 more
doaj   +1 more source

Multi-Component Remote Sensing for Mapping Buried Water Pipelines

open access: yesRemote Sensing
Accurate localization of buried water pipelines in rural areas is crucial for maintenance and leak management but is often hindered by outdated maps and the limitations of traditional geophysical methods.
John Lioumbas   +8 more
doaj   +1 more source

Model assessment of the water utilities transition to service quality criteria

open access: yesВодное хозяйство России: проблемы, технологии, управление, 2022
Th e paper analyzes consequences of the possible transition for Russian water supply and sewerage enterprises from quantitative efficiency criteria to qualitative ones.
Аleksandr А. Tskhai
doaj   +1 more source

A Cost-Effective IoT Model for a Smart Sewerage Management System Using Sensors

open access: yesJ, 2021
The sewerage system is a primary element of a city and is responsible for the congestion of both rain and gray water from homes and industries. It is essential to have a monitoring system and a plan to perform prior expansion in the sewerage management ...
Jahid Hasan Rony   +5 more
doaj   +1 more source

The influence of winter road maintenance on the presence of chlorides in wastewater entering small treatment plants [PDF]

open access: yesJournal of Water and Land Development
During the appearance of the first snowfall, there is a revival of discussion on effective methods of protecting road surfaces and sidewalks against icing.
Grzegorz B. Kaczor   +2 more
doaj   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

open access: yesFEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn   +4 more
wiley   +1 more source

Sewers in Civilization. The Struggle for the Sanitary Condition of the Human Environment

open access: yesЖурнал Фронтирных Исследований
This paper is dedicated to the issues of human activity on sanitary ‘frontier’ from antiquity to present. The structure of the article is determined by the initially put forward hypothesis about the unconditional relationship between the stages of ...
Yuriy A. Ivanyushin   +2 more
doaj   +1 more source

Sanitation options in rural and urban areas: best practices [PDF]

open access: yes, 2008
Suitable low-cost sanitation systems for use in poor rural and urban areas are described. For dispersed rural areas Arborloos generally represent the ‘best’ choice.
Mara, D.D.
core  

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