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Wizualizacja projektów drogowych w programie LumenRT

Widomska M., Bryszewski J.

Magazyn Autostrady

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2018

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Nr 5

107--111

PL

Współczesne oprogramowanie umożliwia szybką i efektowną wizualizację rozwiązań projektowych. Przy pomocy programu LumenRT można wykonać profesjonalną wizualizację projektowanej drogi w bardzo prosty sposób. W artykule zostaną omówione podstawy obsługi programu i jego możliwości oraz proces powstawania wizualizacji od odtworzenia stanu istniejącego i powstania modelu drogi aż do wykonania gotowego produktu.

EN

Modern software enables fast and effective visualization of design solutions. With the help of the LumenRT programme, professional visualization of the planned road can be done in a very simple way. The article will discuss the basics of the software and its capabilities as well as the process of visualization creation from the reconstruction of the existing state and the creation of the road model to the completion of the finished product.

2

The variability of the concentration of bioaerosols above the chambers of biological wastewater treatment

Michałkiewicz M., Kruszelnicka I., Widomska M.

Ecological Chemistry and Engineering. S

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2018

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Vol. 25, nr 2

267--278

EN

The article presents the results of research over microorganisms (psychrophilic and mesophilic bacteria and microscopic fungi) found in wastewater in denitrification and nitrification chambers and specifies the proportion of these microorganisms in bioaerosol at various levels above wastewater level (20, 50 and 100 cm). In the denitrification chamber (anoxic) in 1 cm3 of sewage there were on average 30.35 · 106 CFU of mesophilic bacteria, 72.88 · 106 CFU of psychrophilic bacteria, and 37.3 · 105 CFU of microscopic fungi. In the nitrification chamber, where the oxygen concentration ranged from 0.37 to 2.32 mg O2·dm−3 of wastewater, the number of microorganisms was lower. In 1 cm3 of wastewater there were on average 20.2 · 106 CFU of mesophilic bacteria, 51.76 · 106 CFU of psychrophilic bacteria, and 15.22 · 105 CFU of microscopic fungi. In sewage bioaerosols above these chambers, higher numbers of psychrophilic bacteria than mesophilic ones and microscopic fungi were reported. At the same time differences in the number of microorganisms at different heights above the surface of wastewater could be observed in bioaerosol, as well as between the chambers of the bioreactor. It was found that most frequently the amount of microorganisms decreased with height. The percentage emission ratio (ER) of microorganisms in bioaerosols coming from wastewater accounted for only a fraction of a percent and ranged from 1.13 · 10−8 % (microscopic fungi over the denitrification chamber) to 24.53 · 10−9 % (psychrophilic bacteria over the denitrification chamber). It was found that the process of mixing, aeration of wastewater, have an effect on the emission of microorganisms.

3

Mechanical properties of ultra-fine grain titanium

Greger M., Widomska M., Kander L.

Journal of Achievements in Materials and Manufacturing Engineering

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2010

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Vol. 40, nr 1

33-40

EN

Purpose: The main goal of the presented paper was to describe deformation behaviour of the commercial purity titanium during the ECAP method. Attention was paid particularly on reached mechanical properties of above mentioned material. Design/methodology/approach: Design of experiments rested in extrusion at temperature in range from room temperature up to 280°C. The way of approach was planned in investigation of imposed strain accumulation ability. Among used methods for determination of intended aims were tensile tests, TEM, SEM. Findings: Depending on imposed strain (e = 2 up to 8) was found that mechanical properties (namely tensile strength) have increased up to 960 MPa. Research limitations/implications: Developed ECAP process enables controlling morphology of microstructural constituents and workability of commercially pure titanium. Practical implications: Obtained findings may be used in process of preparing materials for medical application such as dental application where is very important factor their sensitivity to strain. Originality/value: Value of paper is mainly in observed findings that can be used in determination of process conditions at submicro or ultra-fine crystalline materials.