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Страница 1 от 98 резултата
Effective bandwidth of terahertz antiresonant reflecting pipe waveguide.
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We numerically investigate the transmission of the antiresonant-reflection-based terahertz (THz) pipe waveguide in which the cladding layer is very thin or the cladding index is close to one. It is found that robustness of the waveguide confinement is maintained when the cladding thickness is small,
Non-deposition self-cleansing models for large sewer pipes.
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Multiple models from the literature and experimental datasets have been developed and collected to predict sediment transport in sewers. However, all these models were developed for smaller sewer pipes, i.e. using experimental data collected on pipes with diameters smaller than 500 mm. To address
Chlorinated Water Induced Aging of Pipe Grade Polypropylene Random Copolymers.
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Polypropylene random copolymers (PP-R) are common materials for pressurized hot water pipes. In many pipe systems, potable water is disinfected by chlorine to prevent waterborne diseases. This paper deals with hot chlorinated water induced aging of two PP-R grades with varying morphology. One
[4 FATAL CASES OF ACCIDENTAL ILLUMINATING GAS POISONING CAUSED BY DETERIORATION OF AN EXTERIOR PIPE].
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Deteriorations of pulmonary function, elevated carbon monoxide levels and increased oxidative stress amongst water-pipe smokers.
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OBJECTIVE
A water pipe (hookah) is a tobacco smoking tool which is thought to be more harmless than a cigarette, and there are no adequate studies about its hazards to health. Water-pipe smoking is threatening health of the youth in the world today. The objective of this study has been to
Chlorine decay in drinking-water transmission and distribution systems: pipe service age effect.
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Water quality can deteriorate in the transmission and distribution system beyond the treatment plant. Minimizing the potential for biological regrowth can be attained by chlorinating the finished water. While flowing through pipes, the chlorine concentration decreases for different reasons. Reaction
[Effect of a water-pipe network on the sensory quality of drinking water].
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Object of studies was aimed at determining the effect of a water-pipe system on the sensory quality of drinking water originating from various intakes. The aim was to be achieved through analyses of the sensory quality (odor and flavor) of drinking water originating from various reception points
Metagenome analyses of corroded concrete wastewater pipe biofilms reveal a complex microbial system.
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BACKGROUND
Concrete corrosion of wastewater collection systems is a significant cause of deterioration and premature collapse. Failure to adequately address the deteriorating infrastructure networks threatens our environment, public health, and safety. Analysis of whole-metagenome pyrosequencing
Investigation of organic matter migrating from polymeric pipes into drinking water under different flow manners.
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Polymeric pipes, such as unplasticized polyvinyl chloride (uPVC) pipes, polypropylene random (PPR) pipes and polyethylene (PE) pipes are increasingly used for drinking water distribution lines. Plastic pipes may include some additives like metallic stabilizers and other antioxidants for the
Iron release from corroded iron pipes in drinking water distribution systems: effect of dissolved oxygen.
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Iron release from corroded iron pipes is the principal cause of "colored water" problems in drinking water distribution systems. The corrosion scales present in corroded iron pipes restrict the flow of water, and can also deteriorate the water quality. This research was focused on understanding the
Spatial Models of Sewer Pipe Leakage Predict the Occurrence of Wastewater Indicators in Shallow Urban Groundwater.
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Twentieth century municipal wastewater infrastructure greatly improved U.S. urban public health and water quality. However, sewer pipes deteriorate, and their accumulated structural defects may release untreated wastewater to the environment via acute breaks or insidious exfiltration. Exfiltrated
In vitro toxicity assessment of emitted materials collected during the manufacture of water pipe plastic linings.
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Objectives: US water infrastructure is in need of widespread repair due to age-related deterioration. Currently, the cured-in-place (CIPP) procedure is the most common method for water pipe repair. This method involves the on-site manufacture of a new polymer composite plastic liner within
Testicular Toxicity of Water Pipe Smoke Exposure in Mice and the Effect of Treatment with Nootkatone Thereon.
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There is a worldwide increase in the popularity of water pipe (shisha) tobacco smoking including in Europe and North America. However, little is known about the effects of water pipe smoke (WPS) exposure on male reproductivity. We have recently demonstrated that WPS exposure in mice induces
Characteristics of iron corrosion scales and water quality variations in drinking water distribution systems of different pipe materials.
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Interaction between old, corroded iron pipe surfaces and bulk water is crucial to the water quality protection in drinking water distribution systems (WDS). Iron released from corrosion products will deteriorate water quality and lead to red water. This study attempted to understand the effects of
Bacterial community radial-spatial distribution in biofilms along pipe wall in chlorinated drinking water distribution system of East China.
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Biofilms in the pipe wall may lead to water quality deterioration and biological instability in drinking water distribution systems (DWDSs). In this study, bacterial community radial-spatial distribution in biofilms along the pipe wall in a chlorinated DWDS of East China was investigated. Three
Най-пълната база данни за лечебни билки, подкрепена от науката
- Работи на 55 езика
- Билкови лекове, подкрепени от науката
- Разпознаване на билки по изображение
- Интерактивна GPS карта - маркирайте билките на място (очаквайте скоро)
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