The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Badanie jakości wody opiera się na jej analizie mikrobiologicznej pod kątem organizmów wskaźnikowych, czyli takich, które świadczą o konkretnym poziomie zanieczyszczenia. Jednym z głównych tego typu wskaźników jest Escherichia coli.
Gwałtowny wzrost liczebności populacji oraz dynamiczny rozwój przemysłu nie pozostaje bez wpływu na stan zanieczyszczenia globalnych zasobów wody. Coraz większy nacisk kładzie się na rozwój technologii oczyszczania i kontroli jakości oczyszczanych ścieków.
Water supply system has characteristics of non-linear, time-varying parameter, large time delay, so its mathematical model changes time by time. Water supply system widely use PID controller to keep constant pressure and PID controller need accurate mathematical model. The system that use PID controller is along with large overshoot, more adjusting time. Fuzzy controller don't need the accurate mathematical...
The quality of water resources has a direct impact on the daily life of mankind and the sustainable development of society. However, with the rapid development of national industrialization, the current industrial wastewater discharge and improper handling have become more and more serious, especially for the growing domestic water pollution today, it is an urgent need for an efficient water quality...
Water quality becomes one of the important quality factors for the quality life in smart cities. Recently, water quality has been degraded due to diverse forms of pollution caused by disposal of human wastes, industrial wastes, automobile wastes. The increasing pollution affects water quality and the quality of people's life. Hence, water quality evaluation, monitoring, and prediction become an important...
Access to potable water is currently a major concern due to population growth and the decline in clean water sources. One of the most important processes applied during the treatment of water, is the removal of pathogens as bacteria due that can reduce the preventable mortality of infectious intestinal diseases. Previous studies on the manufacture of films based on rutile-phase titanium dioxide nanoparticles...
With the need of airplane for long endurance flight, the pilot raises new demand for the gas-water content of the product generated by OBOGS. For this reason, this paper conducted experiments with the system on the two types of oxygen-rich molecular sieves — NaX type and LiX type, which are used currently for domestic OBOGS under different operating conditions, conducted sampling analysis of the bleed...
We performed mathematical modeling population dynamics of phytoplankton in aquatic ecosystems based on interspecific interactions and nutrient pollution and toxic substances. We proposed a method of measuring control multispectral television ecological status of water bodies on the parameters of phytoplankton.
We present the Autonomous Microbiological Alert Sensor (AMAS), an automatic and remotely-controlled microbiology sensor for field Total Coliform (TC) and Escherichia Coli (E. coli) quantification at remote or difficult-to-access sites. Deployed directly in the environment like a floating buoy, the AMAS is fully waterproof and is capable to perform up to seven independent microbiological determinations...
Recent studies about interactions among energy and water are considered as a new field of research. As almost all energy generation processes require significant amounts of water, and water requires energy for treatment and transport, so these two resources are inextricably linked. The main aim of this work is a presentation of the use of renewable energy for desalination plants in Sicily: in particular...
Water is the basic element for human survival and development, and access to safe drinking water has been an important national goal in rural areas of China. In loess plateau regions of China, however, due to the drought climate, scarce water resources, backward economy and simple technology, the problem of drinking water safety has been seriously endangered the health of the people, and hindered...
This paper presents a model of oil spill spread taking into account the evaporation of light, neutral and non-evaporating pseudofractions of oil spots, dissolution of oil spots and biodegradation. An approximation of the diffusion-convection problem is performed based on schemes of high order of accuracy. An experimental implementation, designed to model possible ecosystem scenarios of shallow waters...
This paper investigates signal reduction due to contamination of low-THz radar radomes for outdoor applications. A measurement methodology is proposed to characterise the effect of different obscurants on electromagnetic wave propagation. This is achieved by measuring the ratio of two signals: one reflected from the reference target through the contaminated radome and another through the radome without...
The control and sanitation of water it's a worldwide concerning problem. In particular is in developing countries where the need is more evident due to the lack of sources and appropriate structures to cope with the outbreaks of waterborne diseases. In most of cases, the cause of these significant epidemiological events have microbial origin. Despite of it the situation of water supplies and sanitation...
System approach and sustainable use of water and energy in all kinds of human activities is not required for financial reasons only. It is also a legal and community obligation. The paper deals with the application of Critical Period Method for irrigation system design. Irrigation system includes a Solar Photovoltaic (PV) generator and inverter, a pump station, a water reservoir and pipelines. PV...
During the past decade, water needs have risen exponentially to an unprecedented scale in India. The demand for water supply is ever increasing and satisfying this requirement has been a major challenge for many countries around the world. Urbanization, climatic changes and wasteful usage has further depleted the resource. Water being one of the major requirements for human survival, conservation...
Water is a natural resource that is very important. All living beings consume water, such as plants, animals, and humans. When the water is contaminated by pollutants it will damage the environment. More than that, it would have an impact on human health. Before consumption, the water must be guaranteed without pollutants. Conductivity is one of water quality parameters. High water conductivity showed...
In this research, the evaluation methods of water resource used for industrial and society are presented in extreme arid areas where the yearly rainfall is less than 50mm, such as the area of Turpan Prefecture and southern area of Xinjiang Region. The Society Method, which deals with the overall water condition, is proposed first. This method covers normal life style and saves life style, which is...
Water hydraulics using natural water (tap water, river water, seawater, etc.) as pressure medium instead of traditional mineral oil has more applications due to its special properties. The open-circuit system type is usually used in equipment, such as water hydraulic variable buoyancy system, under water tools system, water mist, and so on. However, this is a few researches on contamination characteristics...
Oil spill among sea ice has become a subject of great concern to corporations, local residents, and government agencies, which participate in oil exploration, production, and transportation in ice-infested regions recently. For developing a credible and effective response to oil spill in ice-infested waters, a field experiment was performed on spectrum of oil film in waters with sea ice. In this experiment,...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.