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Prace rozpoznawcze dotyczące gazu z łupków : wyniki terenowych badań środowiskowych

Kantor M., Konieczyńska M., Lipińska O.

Przegląd Geologiczny

2015

Vol. 63, nr 7

404--409

At the beginning of 2015 a research study, which covered the main unconventional hydrocarbon (shale gas) basins in Poland, was completed. The study was coordinated by the General Directorate for Environmental Protection. Field studies and analysis were carried out by the consortium led by Polish Geological Institute – National Research Institute, in collaboration with University of Science and Technology AGH in Cracow and Gdañsk University of Technology. Seismometric monitoring was conducted by the Central Mining Institute. The involvement of more than 60 specialists with interdisciplinary knowledge and international experience has provided high-quality results. The aim of the study was to analyze environmental impact of shale gas exploration, taking into account differentiated geological, geoenvironmental, land use, and technological data. The scope of the study included, among others: the groundwater and surface water, landscape, nature conservation forms, soil, noise and ambient air. The study was performed in 7 exploration areas around 7 different wells and included environment baseline study. The results show that there is no long-lasting, significant impact of shale gas exploration on the environment.

Test stand for a complex investigation of the cylindrical traverse grinding processes

Porzycki J.

Pomiary Automatyka Kontrola

2004

R. 50, nr 5

37-40

A test stand carried out in the Department of Manufacturing Techniques and Automation, University of Technology, Rzeszow, and designed for the complex investigation of the cylindrical traverse grinding processes, is described in this paper. The modernized RUP 28 grinder with the CNC PRONUM 630T system was used in the process of building the test stand. The RUP 28 grinder is equipped with eight measuring systems, which during grinding measure the components of the grinding forces, the feed rates and rotational speed of the workpiece, and, after grinding - the worksurface roughness, the shape of the cylindrical surface generating line and the topography of the grinding wheel. Examples of the recorded results of the traverse grinding process are also presented in this paper.

W artykule przedstawiono wykonane w Katedrze Technik Wytwarzania i Automatyzacji Politechniki Rzeszowskiej stanowisko badawcze przeznaczone do kompleksowych badań procesów szlifowania osiowego zewnętrznych powierzchni walcowych. Do budowy stanowiska badawczego wykorzystano zmodernizowaną szlifierkę RUP 28 z układem CNC PRONUM 630. Szlifierka RUP 28 wyposażona jest w osiem układów pomiarowych umożliwiających pomiar składowych siły szlifowania oraz prędkości posuwów i prędkości obrotowej przedmiotu - w czasie szlifowania, jak również chropowatości powierzchni obrobionej, kształtu tworzącej powierzchni walcowej i topografii ściernicy - po szlifowaniu. W artykule pokazano również przykłady rejestrowanych wyników badań procesu szlifowania osiowego.

Modyfikacja powierzchni w procesie elektronowo symulowanej desorpcji

Such B., Kołodziej J., Krok F., Meisel K., Czuba P., Piątkowski P., Struski P., Szymoński M.

Elektronika : konstrukcje, technologie, zastosowania

2001

Vol. 42, nr 8-9

48-50

Alkali halide surface modification due to electron irradiation was investigated with the use of dynamic force microscopy (DFM) and quadrupole mass spectroscopy (QMS). As a result of desorption of atoms from the surface, rectangular pits are created in the topmost layer of the crystal. During irradiation the pits are growing and linking with others what leads to layer-by-layer desorption. Desorption yields of both components exhibit oscillatory dependence on the dose of impinging electrons. Moreover, a correlation has been found between the number of low-coordinated sites on the surface and desorption efficiency. The model is proposed, in which the phenomenon is explained by creation of dynamic equilibrium between competitive processes: (i) desorption and recombination of pairs of defects and (ii) accumulation of F centres in proximity of the surface, which is directed by the topography of the surface.