https://etalpykla.vilniustech.lt/handle/123456789/9 2026-04-11T23:30:28Z 2026-04-11T23:30:28Z Blagnytė, Rūta Paliulis, Dainius https://etalpykla.vilniustech.lt/handle/123456789/160219 2026-04-10T11:54:20Z 2011-01-01T00:00:00Z

Determination of heavy metals in mosses (Pylaisia polyantha) along the high – intensive traffic flow in Geležinis Vilkas street (Vilnius, Lithuania) Blagnytė, Rūta; Paliulis, Dainius Atmospheric pollution generated by motor vehicular exhaust has become one of the major reason for scien tific and public concern on a world scale. The area of investigations was situated near the main park of Vilnius (Vingis park) and Geležinis Vilkas street (Lithuania). The place for the sampling of mosses was chosen according to the high intensive flow traffic that can cause possible pollution to the atmosphere. All samples of mosses were taken in this order: 5, 15, 25, 35, 45 meters from the Geležinis Vilkas street. Heavy met als (HM) were investigated by Atomic Absorption Spectroscopy (AAS), using 210VGP absorption spectrophotome ter at VGTU laboratory. Results of investigation determined, that HM content in samples of Pylaisia polyantha mosses decreased with a distance from the street. The highest concentrations of HM pollutants were found at the distance 5 and 15 meters from the Geležinis Vilkas street. Accumulations of HM were found in samples of mosses in this order: Zn > Cu > Pb > Cr, Ni.

2011-01-01T00:00:00Z Berzins, Andrejs Potapova, Katrina Limane, Baiba Strikauska, Silvija Muter, Olga https://etalpykla.vilniustech.lt/handle/123456789/160218 2026-04-10T11:29:49Z 2011-01-01T00:00:00Z

Interrelations between Soil bacteria and Rye Secale cereale L. in the presence of nitroaromatic compounds Berzins, Andrejs; Potapova, Katrina; Limane, Baiba; Strikauska, Silvija; Muter, Olga Historically 2,4,6-Trinitrotoluene (TNT) was the most widely used military explosive. TNT is toxic and mutagenic compound, having a serious impact on the environment. The aim of this study was to evaluate an efficiency of bioaugmentation in combination with nutrient amendments and rye S. cereale. Design of 30-days soil column experiment provided the control of nitroaromatics (NA) distribution from topsoil (4cm) to deeper layers of soil horizon (20cm). For bioaugmentation, consortium with 5 isolates belonging to Pseudomonas fluorescens and Stenotrophomonas maltophilia, was used. For biostimulation, molasses and plant extract was added to soil. At the beginning of the experiment, only topsoil was contaminated with TNT and its degradation products (75mg NA/kg). After 30 day experiment, the NA concentration in soil amended with nutrients and bacteria consortium was decreased in topsoil from 75 mg/kg to ~4 mg/kg. In the sets with planting rye and nutrient amendments, NA migration to deeper layers of soil horizon was detected. To compare microbial activity in different experimental sets, enzymatic activity (i.e. fluoresceine diacetate hydrolysis, FDA) was measured. After 30-days experiment, FDA activity in soil with bacteria consortium was two-fold higher, as compared to non-augmented soil. An increase of microbial enzymatic activity was detected only in topsoil. Growth of rye was more active in the presence of bacteria consortium. In turn, TNT and its degradation products inhibited plant development. Thus, the results of this experiment indicated to the active role of bioaugmentation and biostimulation in the process of NA degradation. In turn, the growth of rye in the presence of nutrient amendments was not efficient in terms of NA biodegradation.

2011-01-01T00:00:00Z Bektobekov, Georgij https://etalpykla.vilniustech.lt/handle/123456789/160217 2026-04-10T11:08:28Z 2011-01-01T00:00:00Z

Classification attributes and evaluation methods of safety of man-machine systems Bektobekov, Georgij The problem of assessment of ecological and safety risks in man-machine system is very actual now. The paper covers the method of evaluation the real level of ecological and mechanical safety of any nature and anthropogenic systems. The system approach allowed classifying the condition of any nature or anthropogenic objects from the position of safety into four states: dangerous, critical and emergency. The method, proposed in this paper allows evaluating the danger level of any technical, ecological or nature systems.

2011-01-01T00:00:00Z Baltrėnas, Pranas Buckus, Raimondas https://etalpykla.vilniustech.lt/handle/123456789/160216 2026-04-10T10:32:09Z 2011-01-01T00:00:00Z

Indoor measurements of the power density close to mobile station antenna Baltrėnas, Pranas; Buckus, Raimondas The public concern about the potential adverse health effects of the human exposure to the electromagnetic radiation of GSM (Global Standart for Mobile Communications) base stations has grown in the recent years. The increasing number of cellular telephony subscribers has led to an expansion of networks, with the installation of more base stations. This investigation aimed to provide information for the distribution of EMF (electromagnetic field) power density created from antenna at the university area in the Lithuania. We carried out measurements in particular periods of time a day in five of the investigation areas. The results are discussed, regarding both the obtained values and the factors that influence the measurements. The measured values were well below the maximum permissible exposure levels in the adopted HN 81:2005 in our country.

2011-01-01T00:00:00Z