Kazimierz Wielki University in Bydgoszcz

About: Kazimierz Wielki University in Bydgoszcz is a education organization based out in Bydgoszcz, Poland. It is known for research contribution in the topics: Luminescence & Population. The organization has 1109 authors who have published 2923 publications receiving 19548 citations. The organization is also known as: Casimir the Great University & Uniwersytet Kazimierza Wielkiego w Bydgoszczy.

Acoustic emission during austenite decomposition into lower bainite with midrib

Abstract: Phenomena accompanying bainitic transformation in the range of swing back were investigated by using acoustic methods and microscopic analyses It has been found out that midribs are probably formed in the first few dozen seconds Plates of a midrib are a twinned thin-plate martensite While forming midribs, sources of displacement are activated Rapid local deformations exceeding the limit of plasticity produce large acoustic effects Midribs are the first elements of the formed sheaves of bainite and privileged sites for bainite nucleation The tests were made by using specimens of high-carbon steel with 11C wt%, where a very clear range of the accelerated start of bainite transformation was observed This range was determined earlier by using dilatometric measurements It was stated that morphology of microstructures of lower bainite with a midrib (LBM) shows butterfly-shaped arrangement of plates, which is induced by midribs An outline of the acoustic spectrum corresponds with a characteristic of the continuous precipitation

Characterisation of the Rac/PAK pathway in Amoeba proteus.

Abstract: Molecular mechanisms underlying the unique locomotion of the highly motile Amoeba proteus still remain poorly understood. Recently, we have shown that blocking the endogenous amoebal Rac-like protein(s) leads to distinct and irreversible changes in the appearance of these large migrating cells as well as to a significant inhibition of their locomotion. To elucidate the mechanism of the Rac pathway in Amoeba proteus, we tested the effects of blocking the endogenous myosin I heavy chain kinase (MIHCK), one of the Rac effectors in Acanthamoeba castellanii and Dictyostelium discoideum, with anti-MIHCK antibodies in migrating amoebae, as well as the effect of inhibiting Rac and MIHCK on the actin polymerisation process. Antibodies against A. castellanii MIHCK detected an A. proteus protein with a molecular mass (ca. 95 kDa) similar to the A. castellanii kinase. The cellular distribution of MIHCK in A. proteus was very similar to those of Rac-like protein in amoebae and MIHCK in A. castellanii. Amoebae microinjected with anti-MIHCK antibodies moved slower and protruded fewer wide pseudopodia (5–6) than the control cells (9–10), resembling to some extent the phenotype of cells microinjected with anti-Rac antibodies. The in vitro studies indicate that the A. proteus Rac-like protein, but not the MIHCK isoform, is engaged in the regulation of the nucleation step of the actin polymerisation process. These observations suggest that MIHCK may be one of the effectors for Rac in these extremely large cells.

Comparison of the Physical Demands of Friendly Matches and Different Types On-Field Integrated Training Sessions in Professional Soccer Players

Abstract: The aim of this study was to investigate the relationships among physical demands of two friendly matches (FMs) and three task training sessions (TS1,2,3) combining in a different way: a Small-Sided Game (SSG), Mini-Goals (MG), a ball Circuit Training (CT) and a Large-Sided Game (LSG): SSG+MG+LSG (TS1), SSG+CT+LSG (TS2) and MG+CT+LSG (TS3). The TS and match demands in running intensities were monitored in fourteen professional soccer players (age = 23.2 ± 2.7 years, height = 178 ± 6 cm, body mass = 73.2 ± 6.9 kg, mean and SD, respectively) using 10-Hz global positioning system devices, and players' perception of exertion was recorded after each session or match using a visual analogue scale. A one-way repeated measures ANOVA with a Bonferroni correction coupled with magnitude-based inferences were used. A principal component (PC) analysis was conducted on all variables to account for covariance. Three PCs were retained, explaining 76% of the variance: Component 1 explained 46.9% with the associated variables: Total Distance (TD) and distance covered in ranges of speed from >2.2 to 5 m/s and maximal running speed (MRS); and component 3 explained 9.5% and was represented by TD 5, TD, deceleration rate, acceleration rate, maximal running speed, exertion index, work rest ratio, and self-reported exertion. Therefore, the training routines did not replicate the main set of high intensity efforts experienced in competitive conditions. Additionally, PC analysis could be applied in order to select the most representative training and competitive conditions.

Effects of Laser Irradiation on Surface Properties of Poly(ethylene terephthalate)

Abstract: The influence of the ArF laser irradiation on the surface energy of poly(ethylene terephthalate) was investigated. An effort was also made to elucidate the physical and chemical phenomena affecting surface energy (SE). The surface chemical changes, occurring upon the irradiation, were monitored by X-ray photoelectron spectroscopy (XPS) and the changes in the surface geometrical structure were investigated by atomic force microscopy (AFM). The contact angle values obtained with test liquids of different polarity (water and diiodomethane) were measured while the surface energy was calculated by the Owens–Wendt method. The nature of the physico-chemical changes occurring in the poly(ethylene terephthalate) surface layer upon ArF laser irradiation depended mostly on the energy per unit area of the laser pulse and the number of the laser pulses. The polar and dispersive components of the surface energy increased as a result of increasing the number of the laser pulses of energy which were below that of the PET...

“greening” the critical theory of international relations with the concept of world-ecology

Abstract: The article signals the need for a deepened theoretical analysis of environmental issues in International Relations studies. It initializes the idea of “Greening” the Critical Theory of International Relations with critical concepts from other sciences. Thus it proposes the scope of Critical Theory of IR to be expanded to cover not only the relations between power and capital, but the relations of power-capital-nature. It shows common points between the Critical Theory of IR and the concepts of world-ecology and the Capitalocene by Jason W. Moore and proposes reforming some founding definitions that the Critical Theory of IR is based on. This includes re-conceptualizing the critique of capitalism as a way of organizing nature, but also distancing oneself from the Cartesian dichotomy of Society + Nature, which is an obstacle to properly including environmental issues in IR research. The article aims to find some way of incorporating the concepts of world-ecology and the Capitalocene by Jason W. Moore into the Critical Theory of International Relations, thus “Greening” it and updating it to be able to exert some influence upon the ways of thinking about and researching the biggest threat that humanity has ever faced and its relation to the contemporary international relations.