Water for life

Water is a basic prerequisite for the existence of life, an essential factor in the environment, a key natural resource, and an irreplaceable input in most economic branches. Any unsuitable intervention in the cycle or quality of water could cause a chain of serious consequences, which in extreme cases could end in the irreversible loss […]
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Perfluorocarbons in water

The research of micropollutants including PFC (perfluorocarbons, perfluorated compounds – see the frame) in drinking water and their prospective influence on human health is nowadays one of the most significant research topics in the field of drinking water. Nevertheless, the practical applications in the drinking water treatment plant operations falls behind this basic research, although […]
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Cyanobacteria – a hidden threat

Almost everyone certainly met with the Cyanobacteria outbreak in ponds and natural pools; however, in recent years it is nothing unusual in water reservoirs used as drinking water sources as well, which causes a plenty of difficulties to water treatment plants. The problem is usually not the cyanobacteria themselves but rather the substances they produce […]
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Vortices around us

Vortical structures (shortly: vortices) virtually surround us in a normal life. However, we usually do not perceive them as vortices unless somehow visualized, even in the case of dynamic effect on us. We cannot even exclude their local presence in our respiratory or cardiovascular system. A number of vortices relate to human activities, engineering, technological […]
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Flash floods

A number of municipalities in the Czech Republic are situated in areas with a significant flood risk. Municipalities in the foothills and mountain areas are especially affected by flash floods. Every year there are 60–100 flash floods in the Czech Republic, some of them with disastrous consequences. They occur exclusively during the summer, usually when […]
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Nanofibres

Application of nanofibrous mats is not restricted only to technical products such as filters, sensors, and battery separators, but they are widely used also in medicine (preparation of artificial organs, vascular transplants, targeted drug supply). The dominant characteristic of nanofibres is their extremely high ratio relating their surface and occupied volume. The nanofibres diameters range […]
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Water in landscape

Water cycle is one of the fundamental energy and matter transfer mechanisms influencing the human society in numerous ways. The knowledge of the underlying processes behind this cycle is a key issue to the sustainable water management. Water resources are nowadays (probably more than ever) influenced by human activities and ongoing climate change. Floods and […]
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Polymer Rheology

Nowadays we meet polymers everywhere. If we exclude a small cave next to a water spring we find the presence of polymers literally in every household. Do you want to make thermal insulation, to distribute water or gas, to paint, do you have cosmetics in your bathroom, have you invested in electronics or computer equipment? […]
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Microplastics in water

Recently, the presence of plastics in water environment has gained considerable attention. Not only plastic litter that is visible to the naked eye, but also smaller debris – recognized as microplastics – are of a great interest. Microplastics (MPs; plastic particles smaller than 5 mm) have been detected in different water bodies, i.e. oceans, seas […]
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Fluid mechanics

With the transport of bulk materials in the form of a two-phase suspension (liquid-solid phase) we can meet in a number of industries - chemical, food, mining, energy and many others. In addition to closed pipe systems, which are usually hidden for ordinary citizens in industrial agglomerations, the two-phase flow is part of river systems […]
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