Universiteto produkcija / University's production: Recent submissions
Now showing items 1-20 of 6050
-
The evaluation of the efficiency of the l-shaped noise barrier while working with the programme CadnaA
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Due to the diffraction of sound the idea to change the form of the barrier using various designs of the top edge of the barrier has become a very significant factor while increasing the acoustic effect of the barrier. Newly ... -
Development of thermal insulation from local agricultural waste
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)In Lithuania yearly composes large quantity of waste during processing of agricultural plants. Large quantity of these waste amounts a straw. A small part of straw is used for biofuel, the remaining part of straw is chopped ... -
Effect of precipitation on leachate parameters causing colmatation of landfill drainage layer
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Municipal waste landfill drainage formatted at different stages of landfill exploitation, has a negative impact on natural environment. According to the newly implemented waste management policy, landfill drainage monitoring ... -
Manganese trends in tree rings of Pinus sylvestris L. – monitoring soil chemical changes
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Dendrochemistry can be used to monitor historical changes of the elemental composition in the polluted or undisturbed areas. In this study for analysis were taken the increment cores of Scots pine (Pinus sylvestris L.) ... -
Evaluation of the performance with biofilter effectiveness treating volatile organic compounds under different pH value
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)The efficiency of a biofilter filled with pine bark charge was evaluated under conditions of interchanging pH. Hydrogen ion concentration is significance for the growth of microorganisms, therefore biological metabolism ... -
Mathematical modelling of biofilter effectiveness in pH regimes
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)The efficiency of a biofilter filled with pine bark charge was modelled under conditions of interchanging pH. Hydrogen ion concentration is significance for the growth of microorganisms, therefore biological metabolism is ... -
Mathematical simulation of aeration and diffusion processes in the air-water interface
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)This paper deals with problem of water aeration. Water aeration is important factor that influences process of open water self-purification. Aeration first of all depends on purely physical diffusion process taking place ... -
New and increasing occupational and industrial hazards
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)In the recent decade a number of new and increasing hazards arose in the industry world-wide. Some of them can be attributed to the occupational field and some must be considered as hazards capable to initiate serious ... -
Psychosocial work environment research on the situation in Lithuanian companies
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Work Environment Assessment of psychosocial factors in practice quite a complex operation that requires specialized knowledge and expertise. The difficulty arises because many of the concepts of psychosocial factors and ... -
The improvement of indoor environment in computer-classes
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)The indoor environment in classrooms of Tallinn University of Technology was investigated. The classrooms are located in the new building (FEBA) and in the 25 years old building (FI). The main disadvantage in these rooms ... -
Design and operating characteristics of water vapor plasma torch for environmentally friendly processes
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)This research presents the application of the novel developed plasma technology for environmental protection. The following main tasks of this research have been carried out at Lithuanian Energy Institute: a) an experimental ... -
Behavioral responses in rainbow trout Oncorhynchus mykiss as indicators of sublethal exposure to heavy metals
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Heavy metals are common pollutants of aquatic ecosystems and usually are found in mixtures of various combinations. At present the controlling of pollution of aquatic environment by heavy metals is performed basically by ... -
Comparison of steam reforming of biomass gasification tars over Lithuanian dolomite and waste tires char
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Gasification of biomass and different types of waste now is considered as one of most perspective ways for production of heat and electricity. It is necessary to clean the synthesis gas from tar and soot particles in order ... -
On the relationship between hard cosmic ray flux decrease and trauma leaps in 2007–2009 in Vilnius city
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Relationship between hard cosmic ray flux (HCRF) decrease and traumas number leaps in 1 – 3 days is presented. HCRF 105000 measurement results are compared with trauma leaps in Vilnius in 2007 – 2009. It is found that ... -
Radionuclide 90Sr volume activity variations at THE Baltic Sea coast near Juodkrante
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)As far as radionuclide 90Sr volume activity (VA) after the Chernobyl Power Plant accident in the Baltic Sea increased negligibly, so the self-purification process from it was very slow. Long-term measurements of VA of 90Sr ... -
Lignin-based dust suppressant and its effect on the properties of light soil
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Road dust negatively impacts the environment. For diminishing this effect, chemical suppressants are often used. Among the known suppressants, the lignin-based ones are of great scientific and practical interest, because ... -
Laboratory and field testing of new design nitrogen dioxide diffusive samplers
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Nitrogen dioxide is one of the most monitored pollutants in ambient air because of this effect on the human respiratory system, his contributions to the acidification of the ecosystems and his role in the formation of ... -
The low-temperature plasma destruction of used refrigerants
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)According to nowadays environmental policy, chemical compounds with chlorine and fluorine (i.e. CFC, halons) should be removed from every day usage in spite of their harmful impact on a protective ozone layer in the ... -
Evaluation of drinking water according to geochemical composition of its salt deposition
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Salt depositions of drinking water in three regions – Irkutsk, Tomsk and Cheljabinsk- were examined and analyzed. The total amount of analyzed samples included 416 items. The element composition analysis showed inhertance ... -
Mathematical modelling for parametric assessment of general toxicity of wastes containing metals
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)The polynomial static predictive mathematical model was used to assess general toxicity of the selected groups of waste substances on the basis of heavy metal leached forms. The absolute value of waste substances was ...