Repozytorium Uniwersytetu Śląskiego RE-BUŚ
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Burial and thermal history of the eastern transform boundary of the Central Western Carpathians based on 1D basin modelling
No full textZbiór surowych danych badawczychthe Statutory Funds of the Institute of Earth Sciences, Faculty of Natural Sciences, the University of Silesia in Katowice
The influence study of the number of substituted heteroaryls at the non-K region of pyrene structure on the photophysical properties based on the example of pyrene with 1-decyl-1 H -1,2,3-triazole motif
No full textThe study of the photophysical properties (thermal - thermogravimetric analysis and optical - absorption, emission in the solution and in powder, quantum efficiency of emission and efficient fluorescence lifetime in the solution) with the focus on the influence of the number of substituted 1-decyl-1H-1,2,3-triazole groups at the non-K region of pyrene structure. To the best of our knowledge, the investigation of the impact of the number of heteroaryl groups at the non-K region of pyrene is reported for the first time. The obtained results for monosubstituted derivative (1) were compared to di- (2, 3) and tetra- (4) analogues previously reported by us in the literature. In addition, theoretical studies based on DFT and TD-DFT were performed to support interpreting the experimental results. A strong influence of the number of substituted heteroaryls at the non-K region of pyrene on the photophysical properties was noticed. Theoretical calculations revealed that an increasing number of substituted groups decrease the contribution of pyrene in the creation of frontier orbitals for HOMO from 88 to 72% and LUMO from 91 to 74%, with a simultaneous increase of 1-decyl-1H-1,2,3-triazole. The energy gap values follow the same trend, the highest was established for monosubstituted ΔE = 3.62 eV and the lowest for tetrasubstituted ΔE = 3.16 eV. Considering the results of TD-DFT calculations for monosubstituted pyrene, there are no differences in the character of transitions related to absorption and emission in reference to the number of substituted triazole groups at the pyrene core. Therefore, the increasing number of substituted heteroaryls results in red-shifted absorption and emission in the solution and in the solid state (up to 50 nm), increasing the quantum efficiency from 37 to 72% and lower efficient fluorescence lifetime from 9.25 to 2.03 ns
Początki powszechnego szkolnictwa w Prusach
No full textPrusy jako pierwsze państwo na świecie wprowadziły funkcjonujący system obowiązkowego szkolnictwa, jest to jedno z osiągnięć Fryderyka Wielkiego. Wprowadzanie powszechnej edukacji nie było jednak procesem bezproblemowym ani pozbawionym wad w pewnych kwestiach. Powszechne szkolnictwo było cywilizacyjnym krokiem do przodu, jednak poza szczytnym celem nauki niemieckie szkoły służyły także do programowania społeczeństwa: miały wpajać posłuszeństwo i zaufanie wobec państwa, aby tworzyć przydatnych dla monarchii obywateli, a w przypadku mniejszości, takich jak Polacy, dążyć także do germanizacji dzieci. Pruski model szkolnictwa, zreformowany na początku XIX wieku, przyjął się na całym świecie i do dzisiaj funkcjonuje w większości krajów, w tym Polsce. Mimo tego, że szkoły znacząco się zmieniły przez te 200 lat, to ogół systemu pozostaje w dużej mierze wierny pruskiemu systemowi. Artykuł przedstawia początki funkcjonowania powszechnego szkolnictwa w Prusach, rzucając światło na to, jakie korzenie mają dzisiejsze szkoły
Deficyty edukacyjne i tożsamościowe uniwersalnego modelu edukacji wobec Aborygenów
No full textW artykule rozpatrzony zostaje problem narzucenia państwowej i kościelnej edukacji Aborygenom australijskim i tasmańskim podczas kolonizacji. Autorka skupia się na roli pierwszych szkół aborygeńskich dzieci, gdzie edukacja miała wypierać z nich świadomość kulturową, tożsamość etniczną, wiedzę o naturze, życie w harmonii z otaczającą je fauną i florą. Obecnie system edukacji w Australii, zaczerpnięty głównie z modelu edukacyjnego Stanów Zjednoczonych Ameryki Północnej, opiera się na indywidualizmie, daje prawo do wolności, wyboru oraz zrozumienia. W XXI w. każdy powinien mieć prawo do edukacji, zgłębiania wiedzy na każdej płaszczyźnie, jednak proponowane obszary zagadnień w edukacji zachodniej są ograniczone. Operują wiedzą ważną dla kultury amerykańskiej oraz europejskiej, nie uwzględniają wartości ważnych dla mniejszości etnicznych innych kontynentów, w tym Aborygenów. Krytyczna refleksja nad dążeniem do wypracowania uniwersalnego modelu edukacyjnego na całym świecie jest kluczowa, by zrozumieć do jakich deficytów edukacyjnych i tożsamościowych prowadzi
Turning Molecular Springs into Nano-Shock Absorbers: The Effect of Macroscopic Morphology and Crystal Size on the Dynamic Hysteresis of Water Intrusion-Extrusion into-from Hydrophobic Nanopores
No full textPaweł Łukasz Zajdel, David G. Madden, Robin Babu, Marco Tortora, Diego Mirani, Nikolay Nikolaevich Tsyrin, Luis Bartolomé, Eder Amayuelas, David Fairen-Jimenez, Alexander Rowland Lowe, Mirosław Adam Chorążewski, Juscelino B. Leao, Craig M. Brown, Markus Bleuel, Victor Stoudenets, Carlo Massimo Casciola, María Echeverría, Francisco Bonilla, Giulia Grancini, Simone Meloni, Yaroslav GrosuControlling the pressure at which liquids intrude (wet) and extrude (dry) a nanopore is of paramount importance for a broad range of applications, such as energy conversion, catalysis, chromatography, separation, ionic channels, and many more. To tune these characteristics, one typically acts on the chemical nature of the system or pore size. In this work, we propose an alternative route for controlling both intrusion and extrusion pressures via proper arrangement of the grains of the nanoporous material. To prove the concept, dynamic intrusion–extrusion cycles for powdered and monolithic ZIF-8 metal–organic framework were conducted by means of water porosimetry and in operando neutron scattering. We report a drastic increase in intrusion–extrusion dynamic hysteresis when going from a fine powder to a dense monolith configuration, transforming an intermediate performance of the ZIF-8 + water system (poor molecular spring) into a desirable shock-absorber with more than 1 order of magnitude enhancement of dissipated energy per cycle. The obtained results are supported by MD simulations and pave the way for an alternative methodology of tuning intrusion–extrusion pressure using a macroscopic arrangement of nanoporous material
Bachelard and Psychoanalysis in Poland / Bachelard et la Psychanalyse en Pologne / Bachelard e la Psicoanalisi in Polonia - [bibliografia]
Full text linkSpis bibliograficzny nt. Bachelard i psychoanaliza w Polsc
Unsupervised Learning in Drug Design from Self-Organization to Deep Chemistry
Full text linkThe availability of computers has brought novel prospects in drug design. Neural networks
(NN) were an early tool that cheminformatics tested for converting data into drugs. However, the
initial interest faded for almost two decades. The recent success of Deep Learning (DL) has inspired a
renaissance of neural networks for their potential application in deep chemistry. DL targets direct
data analysis without any human intervention. Although back-propagation NN is the main algorithm
in the DL that is currently being used, unsupervised learning can be even more efficient. We review
self-organizing maps (SOM) in mapping molecular representations from the 1990s to the current
deep chemistry. We discovered the enormous efficiency of SOM not only for features that could be
expected by humans, but also for those that are not trivial to human chemists. We reviewed the DL
projects in the current literature, especially unsupervised architectures. DL appears to be efficient in
pattern recognition (Deep Face) or chess (Deep Blue). However, an efficient deep chemistry is still
a matter for the future. This is because the availability of measured property data in chemistry is
still limited
The influence of public and corporate insurance law on the application of private international law : selected issues
Full text linkThe regime of obligations arising under insurance relationships, as expressed in Art. 7 of the Rome I Regulation is, however, relatively complex. The criticism seems legitimate of academic authors who quite clearly express their negative attitude to the wording of that provision, calling it a “labyrinth” or even “pandemonium of international law.” As a result of the not particularly transparent nature of that regime, it can be doubted if in all situations the “weaker party” was afforded due protection. Negative answer to that question prompts a search for other solutions which allow to achieve the effect of conflict of laws designation of a law giving effect to the postulate of protecting the weaker party to the insurance relationship. The purpose of the study is to indicate, in the first place, the existing criteria of the division into public law and private law in the context of private international law. The second purpose is to analyze the phenomenon of mutual interpenetration of private and public law in the private international law of insurance contracts. The purpose of considerations was to indicate the mutual interpenetration between EU provisions of public and corporate law, as well as the impact of national provisions of the same type on private international law
Genome Engineering Technology for Durable Disease Resistance: Recent Progress and Future Outlooks for Sustainable Agriculture
Full text linkCrop production worldwide is under pressure from multiple factors, including reductions in available arable land and sources of water, along with the emergence of new pathogens and development of resistance in pre-existing pathogens. In addition, the ever-growing world population has increased the demand for food, which is predicted to increase by more than 100% by 2050. To meet these needs, different techniques have been deployed to produce new cultivars with novel heritable mutations. Although traditional breeding continues to play a vital role in crop improvement, it typically involves long and laborious artificial planting over multiple generations. Recently, the application of innovative genome engineering techniques, particularly CRISPR-Cas9-based systems, has opened up new avenues that offer the prospects of sustainable farming in the modern agricultural industry. In addition, the emergence of novel editing systems has enabled the development of transgene-free non-genetically modified plants, which represent a suitable option for improving desired traits in a range of crop plants. To date, a number of disease-resistant crops have been produced using gene-editing tools, which can make a significant contribution to overcoming disease-related problems. Not only does this directly minimize yield losses but also reduces the reliance on pesticide application, thereby enhancing crop productivity that can meet the globally increasing demand for food. In this review, we describe recent progress in genome engineering techniques, particularly CRISPR-Cas9 systems, in development of disease-resistant crop plants. In addition, we describe the role of CRISPR-Cas9-mediated genome editing in sustainable agriculture
Crystallization of Lanthanide—Ho3+ and Tm3+ Ions Doped Tellurite Glasses
Full text linkIn the presented work, the tellurite glasses TeO2-WO3-ZnO doped with Tm3+ and Ho3+ ions
were prepared by the same glass forming method. X-ray diffraction (XRD) and differential thermal
analysis (DTA) techniques were used to study the effects of the forming technology on the thermal
and structural properties of the fabricated glasses. After controlled crystallization of investigated
glasses, the emission in the VIS- and NIR range was determined. The effect of silver doping on
emission intensity was investigated. The value of the activation energy of the glass crystallization
process was determined, while the Ea value for pure TeO2 glass was much lower than for tellurite
glasses TeO2-WO3-ZnO