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The purpose of the paper is to discuss the hardening problems in materials. Kinematic and isotropic hardening are considered. The paper has a review character.
In this paper the results of investigations on buildings heat gains components are introduced. The factors, which influence heat gains in analysed building were identified. The changes of value of these quantities on the influence of individual factors were estimated.
This study presents opportunities and potential of solar energy and tendencies of its use. The EU climate package of "3 x 20%", and a new directive of EU about promotion of renewable sources of energy create perfect conditions for fast development of modern technologies in solar energy sector. Evolution of use of solar energy in Poland points to huge potential which cannot be neglected.
The purpose of the paper is to analyze deformation problems in welded structures. The stresses resulting from thermomechanical loadings cause bending, buckling and rotation. The basic types of distortions in welding are analyzed. The paper has a review character.
The purpose of the paper is to compare two basic yield criteria met in engineering mechanics i.e. Huber-Mises and Treska. The various forms of the yield locus are presented and discussed. The paper has a review character.
The article contains the theoretical bases of the analyses process floating causes and grinding concrete surface. The particular attention has been paid to quality factors of processing determined by roughness uniformity of processed surface.
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