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Book
Provision of Water to the Poor in Africa : Experience With Water Standposts and the Informal Water Sector
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Year: 2010 Publisher: Washington, D.C., The World Bank,

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Standpipes that dispense water from utilities are the most common alternatives to piped water connections for poor customers in the cities of Sub-Saharan Africa. Fifty-five percent of the unconnected urban population relies on standpipes as their first water source. Other informal water providers include household resellers and a variety of water tankers and vendors, which are the first water source of 1 percent and 3 percent of the urban population, respectively. In the cities studied, the percentage of unconnected households ranges from 12 percent to 86 percent of the population. The percentage of unconnected people covered by standpipes is substantially higher for countries with higher rates of household connection, while the percentage of unconnected people covered by water tankers or water vendors is higher for countries with lower rates of household connection. Water prices in the informal market are much higher than for households with private connections or yard taps. Although standpipes are heavily subsidized by utilities, the prices charged by standpipe operators are closely related to the informal water reseller price. Standpipe management models also affect the informal price of water. For example, the shift from utilities management to delegated management models without complementary regulation or consumer information has often led to declines in service levels and increased prices. Standpipes are not the only or even the most efficient solution in peri-urban areas. Programs that promote private household connections and arrangements that improve pricing and services in the household resale market should also be considered by policy makers.


Book
Access To Water, Women's Work and Child Outcomes
Authors: ---
Year: 2010 Publisher: Washington, D.C., The World Bank,

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Poor rural women in the developing world spend considerable time collecting water. How then do they respond to improved access to water infrastructure? Does it increase their participation in income earning market-based activities? Does it improve the health and education outcomes of their children? To help address these questions, a new approach for dealing with the endogeneity of infrastructure placement in cross-sectional surveys is proposed and implemented using data for nine developing countries. The paper does not find that access to water comes with greater off-farm work for women, although in countries where substantial gender gaps in schooling exist, both boys' and girls' enrollments improve with better access to water. There are also some signs of impacts on child health as measured by anthropometric z-scores.


Book
Provision of Water to the Poor in Africa : Experience With Water Standposts and the Informal Water Sector
Authors: --- ---
Year: 2010 Publisher: Washington, D.C., The World Bank,

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Abstract

Standpipes that dispense water from utilities are the most common alternatives to piped water connections for poor customers in the cities of Sub-Saharan Africa. Fifty-five percent of the unconnected urban population relies on standpipes as their first water source. Other informal water providers include household resellers and a variety of water tankers and vendors, which are the first water source of 1 percent and 3 percent of the urban population, respectively. In the cities studied, the percentage of unconnected households ranges from 12 percent to 86 percent of the population. The percentage of unconnected people covered by standpipes is substantially higher for countries with higher rates of household connection, while the percentage of unconnected people covered by water tankers or water vendors is higher for countries with lower rates of household connection. Water prices in the informal market are much higher than for households with private connections or yard taps. Although standpipes are heavily subsidized by utilities, the prices charged by standpipe operators are closely related to the informal water reseller price. Standpipe management models also affect the informal price of water. For example, the shift from utilities management to delegated management models without complementary regulation or consumer information has often led to declines in service levels and increased prices. Standpipes are not the only or even the most efficient solution in peri-urban areas. Programs that promote private household connections and arrangements that improve pricing and services in the household resale market should also be considered by policy makers.


Book
Cyanobacteria and Cyanotoxins: New Advances and Future Challenges
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ISBN: 3039218395 3039218387 Year: 2020 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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Cyanobacteria are a group of ubiquitous photosynthetic prokaryotes. Their occurrence has been increasing worldwide, due to anthropogenic activities and climate change. Several cyanobacterial species are able to synthesize a high number of bioactive molecules, among them, cyanotoxins (microcystins, cylindrospermopsin, nodularin, etc.), which are considered a health concern. For risk assessment of cyanotoxins, more scientific knowledge is required to perform adequate hazard characterization, exposure evaluation and, finally, risk characterization of these toxins. This Special Issue “Cyanobacteria and Cyanotoxins: New Advances and Future Challenges” presents new research or review articles related to different aspects of cyanobacteria and cyanotoxins, and contributes to providing new toxicological data and methods for a more realistic risk assessment.


Book
Antimicrobials and Antimicrobial Resistance in the Environment
Authors: ---
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Today, the food and water that we encounter in any part of the world could contain antibiotic residues and/or antibiotic-resistant bacteria. This book presents research evidence for this and also a potential way to mitigate the problem. Although not presented in this book, it is likely that this situation exists for all other types of antimicrobial agents as well, including antivirals, antifungals, and antiprotozoal agents. The presence of antibiotic residues and/or antibiotic-resistant bacteria contributes to the generation and propagation of resistance in disease-causing pathogens in humans and animals. Therefore, the medicines that we use to treat and/or prevent infections will not work as expected in many cases. It is estimated that if we do not contain antimicrobial resistance urgently, by 2050, up to 10 million people will die due to bacterial infectious diseases, such as pneumonia, skin infections, urinary tract infections, etc., which were once easily treatable. However, this book presents a system that can eliminate resistant bacteria and antibiotics from the environment, with the potential to work on other environmental microbes and antimicrobials. This book opens pathways for academics and scientists to do further research on antimicrobials and antimicrobial-resistant bacteria in various environmental areas and also presents evidence for policymakers to take further action and make the general public aware of the current situation in this context.

Keywords

Research & information: general --- antibiotic resistance --- community --- environment --- India --- coliforms --- commensal --- antibiotic resistance genes --- blaCTX-M --- blaTEM --- qepA --- hospital wastewater --- core-shell --- disinfection --- Escherichia coli --- nanoparticles --- pathogens --- silver --- solar-photocatalysis --- Staphylococcus aureus --- water --- zinc oxide --- S. aureus --- beaches --- multiple-antibiotic resistance --- ramA --- efflux pump --- multilocus sequence typing --- surface water --- antibiotics --- pakchoi --- endophytic bacteria --- antibiotic-resistant genes --- hydroponic cultivation --- Campylobacter --- poultry --- antibiotic susceptibility --- Rep-PCR --- cdt toxin --- Acinetobacter --- JDS3 --- river --- carbapenemases --- antimicrobial resistance --- genotypes --- non-typhoidal Salmonella --- genes --- integrons --- subtyping --- ESBL --- MRSA --- VRE --- sewage sludge --- PER-1 --- pathogenic E. coli --- harvested rainwater --- public health --- Sub-Saharan Africa --- alternative water source --- farmer --- veterinary antibiotics use --- knowledge --- behavior probability model --- China --- antibiotics residue --- food animals --- bacteria --- Nigeria --- E. coli --- antibiotic-resistance gene --- MARI --- MARP --- multidrug resistance --- flooring design --- Turkey --- antibacterial resistance --- enrofloxacin --- commensal E. coli --- ESBL-producing E. coli --- β-lactamase genes --- insertion sequences --- antibiotic residues --- aquatic environment --- ciprofloxacin --- Fe-doped ZnO nanoparticles --- photocatalysis --- sunlight --- ceragenin --- multidrug-resistant bacteria --- biofilm --- antimicrobial peptides --- colistin --- n/a


Book
Antimicrobials and Antimicrobial Resistance in the Environment
Authors: ---
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Today, the food and water that we encounter in any part of the world could contain antibiotic residues and/or antibiotic-resistant bacteria. This book presents research evidence for this and also a potential way to mitigate the problem. Although not presented in this book, it is likely that this situation exists for all other types of antimicrobial agents as well, including antivirals, antifungals, and antiprotozoal agents. The presence of antibiotic residues and/or antibiotic-resistant bacteria contributes to the generation and propagation of resistance in disease-causing pathogens in humans and animals. Therefore, the medicines that we use to treat and/or prevent infections will not work as expected in many cases. It is estimated that if we do not contain antimicrobial resistance urgently, by 2050, up to 10 million people will die due to bacterial infectious diseases, such as pneumonia, skin infections, urinary tract infections, etc., which were once easily treatable. However, this book presents a system that can eliminate resistant bacteria and antibiotics from the environment, with the potential to work on other environmental microbes and antimicrobials. This book opens pathways for academics and scientists to do further research on antimicrobials and antimicrobial-resistant bacteria in various environmental areas and also presents evidence for policymakers to take further action and make the general public aware of the current situation in this context.

Keywords

Research & information: general --- antibiotic resistance --- community --- environment --- India --- coliforms --- commensal --- antibiotic resistance genes --- blaCTX-M --- blaTEM --- qepA --- hospital wastewater --- core-shell --- disinfection --- Escherichia coli --- nanoparticles --- pathogens --- silver --- solar-photocatalysis --- Staphylococcus aureus --- water --- zinc oxide --- S. aureus --- beaches --- multiple-antibiotic resistance --- ramA --- efflux pump --- multilocus sequence typing --- surface water --- antibiotics --- pakchoi --- endophytic bacteria --- antibiotic-resistant genes --- hydroponic cultivation --- Campylobacter --- poultry --- antibiotic susceptibility --- Rep-PCR --- cdt toxin --- Acinetobacter --- JDS3 --- river --- carbapenemases --- antimicrobial resistance --- genotypes --- non-typhoidal Salmonella --- genes --- integrons --- subtyping --- ESBL --- MRSA --- VRE --- sewage sludge --- PER-1 --- pathogenic E. coli --- harvested rainwater --- public health --- Sub-Saharan Africa --- alternative water source --- farmer --- veterinary antibiotics use --- knowledge --- behavior probability model --- China --- antibiotics residue --- food animals --- bacteria --- Nigeria --- E. coli --- antibiotic-resistance gene --- MARI --- MARP --- multidrug resistance --- flooring design --- Turkey --- antibacterial resistance --- enrofloxacin --- commensal E. coli --- ESBL-producing E. coli --- β-lactamase genes --- insertion sequences --- antibiotic residues --- aquatic environment --- ciprofloxacin --- Fe-doped ZnO nanoparticles --- photocatalysis --- sunlight --- ceragenin --- multidrug-resistant bacteria --- biofilm --- antimicrobial peptides --- colistin --- n/a


Book
Antimicrobials and Antimicrobial Resistance in the Environment
Authors: ---
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Today, the food and water that we encounter in any part of the world could contain antibiotic residues and/or antibiotic-resistant bacteria. This book presents research evidence for this and also a potential way to mitigate the problem. Although not presented in this book, it is likely that this situation exists for all other types of antimicrobial agents as well, including antivirals, antifungals, and antiprotozoal agents. The presence of antibiotic residues and/or antibiotic-resistant bacteria contributes to the generation and propagation of resistance in disease-causing pathogens in humans and animals. Therefore, the medicines that we use to treat and/or prevent infections will not work as expected in many cases. It is estimated that if we do not contain antimicrobial resistance urgently, by 2050, up to 10 million people will die due to bacterial infectious diseases, such as pneumonia, skin infections, urinary tract infections, etc., which were once easily treatable. However, this book presents a system that can eliminate resistant bacteria and antibiotics from the environment, with the potential to work on other environmental microbes and antimicrobials. This book opens pathways for academics and scientists to do further research on antimicrobials and antimicrobial-resistant bacteria in various environmental areas and also presents evidence for policymakers to take further action and make the general public aware of the current situation in this context.

Keywords

antibiotic resistance --- community --- environment --- India --- coliforms --- commensal --- antibiotic resistance genes --- blaCTX-M --- blaTEM --- qepA --- hospital wastewater --- core-shell --- disinfection --- Escherichia coli --- nanoparticles --- pathogens --- silver --- solar-photocatalysis --- Staphylococcus aureus --- water --- zinc oxide --- S. aureus --- beaches --- multiple-antibiotic resistance --- ramA --- efflux pump --- multilocus sequence typing --- surface water --- antibiotics --- pakchoi --- endophytic bacteria --- antibiotic-resistant genes --- hydroponic cultivation --- Campylobacter --- poultry --- antibiotic susceptibility --- Rep-PCR --- cdt toxin --- Acinetobacter --- JDS3 --- river --- carbapenemases --- antimicrobial resistance --- genotypes --- non-typhoidal Salmonella --- genes --- integrons --- subtyping --- ESBL --- MRSA --- VRE --- sewage sludge --- PER-1 --- pathogenic E. coli --- harvested rainwater --- public health --- Sub-Saharan Africa --- alternative water source --- farmer --- veterinary antibiotics use --- knowledge --- behavior probability model --- China --- antibiotics residue --- food animals --- bacteria --- Nigeria --- E. coli --- antibiotic-resistance gene --- MARI --- MARP --- multidrug resistance --- flooring design --- Turkey --- antibacterial resistance --- enrofloxacin --- commensal E. coli --- ESBL-producing E. coli --- β-lactamase genes --- insertion sequences --- antibiotic residues --- aquatic environment --- ciprofloxacin --- Fe-doped ZnO nanoparticles --- photocatalysis --- sunlight --- ceragenin --- multidrug-resistant bacteria --- biofilm --- antimicrobial peptides --- colistin --- n/a


Book
Efficiency of Bank Filtration and Post-Treatment
Authors: ---
ISBN: 3039213067 3039213059 Year: 2019 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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Riverbank filtration (RBF) schemes for the production of drinking water are increasingly challenged by new constituents of concern, such as organic micropollutants and pathogens in the source water and hydrological flow variations due to weather extremes. RBF and new technology components are integrated and monitoring and operating regimes are adopted to further optimize water treatment in bank filtration schemes for these new requirements. This Special Issue presents results from the EU project AquaNES “Demonstrating synergies in combined natural and engineered processes for water treatment systems” (www.aquanes.eu). Additionally, papers from other research groups cover the efficiency of bank filtration and post-treatment, advantages and limitations of combining natural and engineered processes, parameter-specific assessment of removal rates during bank filtration, and the design and operation of RBF wells. The feasibility, design, and operation of RBF schemes under specific site conditions are highlighted for sites in the US, India, and South Korea

Keywords

floods --- environmental monitoring --- river bank filtration --- heavy metals --- riverside water source --- entrance velocity --- ultrafiltration --- online monitoring --- drinking water treatment --- water treatment --- system costs --- optimization --- biofilm --- fluorescence excitation-emission matrix --- riverbed --- inorganic chemicals --- well structure remodeling --- riverbank filtration (RBF) --- sub-oxic conditions --- electro-chlorination --- energy generation --- pressure loss --- bank filtrate portion --- removal efficacy --- bank filtrate --- manganese --- out/in membrane comparison --- pharmaceutical residues --- analytical method --- hydrochemistry --- subsurface geology --- dissolved organic matter --- column experiments --- storage tank --- groundwater --- organic matter composition --- water supply --- rural water supply --- collector wells --- mirror-image method --- southern India --- gabapentin --- microorganisms --- site investigation --- small communities --- decentralized capillary nanofiltration --- PHREEQC --- renewable energy --- droughts --- hydrological trends --- bank filtration --- filter cake --- sulphate --- point-bar alluvial setting --- inline electrolysis --- energy efficiency --- Ganga --- climate change --- turbine --- Nakdong River --- organic matter degradation --- oxypurinol --- slow sand filtration --- suboxic --- PARAFAC-EEM --- Krishna River --- water quality --- smart villages --- micropollutants --- anoxic --- dissolved organic carbon (DOC) --- attenuation --- organic micropollutants --- disinfection --- surface water treatment --- nitrate --- drinking water hydropower --- pesticides --- disinfection by-products --- Damodar --- pathogen barrier --- organic carbon --- salinity --- sustainable water production --- clogging --- Yamuna --- LC-OCD --- redox sensitivity --- pharmaceuticals --- high temperature --- performance --- riverbank filtration --- trihalomethanes --- iron


Book
Energy Efficiency in Buildings: Both New and Rehabilitated
Authors: ---
ISBN: 3039287036 3039287028 Year: 2020 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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Buildings are one of the main causes of the emission of greenhouse gases in the world. Europe alone is responsible for more than 30% of emissions, or about 900 million tons of CO2 per year. Heating and air conditioning are the main cause of greenhouse gas emissions in buildings. Most buildings currently in use were built with poor energy efficiency criteria or, depending on the country and the date of construction, none at all. Therefore, regardless of whether construction regulations are becoming stricter, the real challenge nowadays is the energy rehabilitation of existing buildings. It is currently a priority to reduce (or, ideally, eliminate) the waste of energy in buildings and, at the same time, supply the necessary energy through renewable sources. The first can be achieved by improving the architectural design, construction methods, and materials used, as well as the efficiency of the facilities and systems; the second can be achieved through the integration of renewable energy (wind, solar, geothermal, etc.) in buildings. In any case, regardless of whether the energy used is renewable or not, the efficiency must always be taken into account. The most profitable and clean energy is that which is not consumed.

Keywords

artificial neural network --- thermal performance --- dynamic simulation --- building renovation --- zero energy building --- building --- energy productivity --- building sector --- three-phase unbalance minimization --- optimization --- seasonal performance factor (SPF) --- envelope transmittance --- demolition --- envelope airtightness --- building energy prediction --- energy --- Korean household energy consumption --- floor envelope design --- building refurbishment --- perturbation and observation --- glazing --- ground and water source heat pump (ASHP --- sensitivity --- energy efficiency promotion --- model predictive control --- renovation --- home energy management system --- energy tunnel --- performance parameter design --- air --- coefficient of performance (COP) --- Arab region --- building rehabilitation --- ground heat transfer --- residential buildings --- Deutsche Gesellschaft für Nachhaltiges Bauen (DGNB) --- policy design --- building user activity --- Leadership in Energy &amp --- lightweight expanded clay aggregate (LECA) --- energy renovation --- energy performance --- urban modelling --- Maghreb --- analytical hierarchy process --- surface cooling --- thermal insulation --- Level(s) --- subtropical climate --- energy efficiency --- green building rating systems --- Ipomoea batatas --- big data --- life cycle cost analysis --- domestic hot water (DHW) --- multi-family buildings --- greenhouse --- building energy --- passive architecture --- prediction --- Haute Qualité Environnementale (HQE) --- Minimum-Energy Building (MEB) --- energy modeling --- Mashreq --- simulation engines --- HVAC demand --- test method --- adjustable step size --- life cycle cost --- energy saving ratio --- Environmental Design (LEED) --- influencing factors --- GSHP and WSHP) --- energy use --- subtropical climate building --- single-person household --- heat load --- energy performance standard --- technology package --- energy-performance gap --- GCC --- Building Research Establishment Assessment Method (BREEAM) --- energy pile --- nearly zero energy building --- co-simulation --- new construction --- space heating --- building stock energy demand --- low power loss --- maximum power point tracking --- envelope thermography --- extensive green roof --- OPERA-MILP


Book
Water Supply and Water Scarcity
Authors: --- ---
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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This Book includes selected papers that has been published in the Water journal Special Issue (SI) on Water Supply and Water Scarcity. Moreover, an overview of the SI is included. The papers selected for publication in the SI include review and research papers on water history, on water management issues under water scarcity regimes, on rainwater harvesting, on water quality and degradation, and on climatic variability impacts on water resources. Overall, the issue identify and highlight the main challenges in water sector, and particularly in management and protection of water resources and in use of alternative (non-conventional) water resources, especially in areas with demographic change and climate vulnerability in order to achieve sustainable and secure water supply. Furthermore, general guidelines and possible solutions for an improved and sophisticated water management system are proposed and discussed, such as the adoption of advanced technological solutions and practices that improve water-use efficiency and the use of alternative water resources, to address the growing environmental and health issues and to reduce the emerging conflicts among water users.

Keywords

Research & information: general --- Environmental economics --- drought --- early warning --- water scarcity --- water supply --- routine monitoring --- hydrologic modeling --- remote sensing --- GIS --- alternative water source --- rainwater harvesting --- arid and semi-arid areas --- hydraulics --- dividing flow manifold --- showerheads --- sprays --- dissolved oxygen --- climate change --- water budget --- general circulation model --- modeling --- stream flow changes --- soil water --- RCP --- Aculeo Lagoon --- Chile --- water demands --- water management --- rainwater harvesting system --- multi-storey residential building --- end-uses --- economic feasibility --- satisfaction survey --- ecological water demand --- reservoir ecological operation --- MIKE 11 model --- PHABSIM model --- watershed management --- water quality --- conventional farming --- organic farming --- nitrate --- residual sodium carbonate --- sodium adsorption ratio --- total dissolved solids --- irrigation practices --- Aztecs --- bronze age --- Byzantine times --- Chinese dynasties --- Egyptians --- Harappans --- Hellenic civilizations --- Incas --- medieval times --- Mayas --- Mesopotamia --- Minoans --- modern times --- Ottoman times --- Romans --- n/a --- water resources management --- water reuse --- climate variability --- circular economy --- sustainability --- long-term --- regional water supply planning --- alternative water supply --- projects --- expenditures --- investments --- conservation --- intermittent water supply --- pressure monitoring --- unreliable water supply --- pipe breaks --- water distribution system --- water system operation --- water scarcity regime --- water use efficiency --- rain harvesting --- desalination

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