Equilibrium and transport properties of hybrid junctions between superconductors and spin active materials

126 p.En esta tesis investigamos la evolución del estado singlete de un material superconductor convencional debido a campos dependientes del espín a su alrededor

Java and Kotlin code performance in selected web frameworks

This paper discusses the issue of comparing Java and Kotlin technologies based on the web application framework. The criteria taken into account for testing purposes are: execution time, memory usage, CPU load, database response in set time. A series of tests and their in-depth comparative analysis are carried out. For this case, tests and code analysis were carried out to draw comparative conclusions. The performance in terms of web frameworks, database response speed and tests implementation in different languages - in all these Kotlin proved to be less efficient. There is no significant difference between CPU load between individual easurements, the difference does not exceed 2%. Implementation in the Kotlin language has never achieved the best result in any group of measurements

Wheat germ oil extracted by supercritical carbon dioxide with ethanol: Fatty acid composition

In this work, supercritical fluid extraction (SFE) using CO₂ with ethanol as entrainer was performed at a temperature of 40 oC under a pressure of 21 MPa. For comparison, a similar extraction without the entrainer was carried out. The extraction yield of wheat germ using supercritical CO₂ with ethanol was slightly higher (10.7 wt%) than that of extraction without the entrainer (9.9 wt%). Fractions of SFE extracts were collected separately during the experiments and the composition of fatty acids in each fraction was analyzed. The SFE extracted oils were rich (63.4-71.3%) in the most valuable polyunsaturated fatty acids (PUFA) and their content in all collected fractions was approximately constant. Similar PUFA contents were found in the reference samples of oils extracted by n-hexane (66.2-67.0%), while the commercial cold-pressed oil contained significantly less PUFA (60.2%). These results show a higher nutritional value of the oil obtained by extraction with supercritical CO₂ than cold pressed oil which is generally considered to be very valuable.<br><br>En este trabajo, la extracción con fluidos supercríticos (SFE) usando CO₂ con etanol como agente de arrastre se realizó a 40 °C bajo una presión de 21 MPa. Se ha llevado a cabo la comparación con una extracción similar sin agente de arrastre. El rendimiento de la extracción de germen de trigo usando CO₂ supercrítico con etanol fue ligeramente mayor (10,7% en peso) que la de extracción sin agente de arrastre (9,9% en peso). Se recogieron por separado fracciones de extractos SFE durante los experimentos y se analizó la composición de ácidos grasos en cada fracción. Los aceites extraídos mediante SFE eran ricos en los ácidos grasos poliinsaturados más valiosos (63,4-71,3%), (PUFA) y su contenido en todas las fracciones recogidas fue aproximadamente constante. Un contenido similar de PUFA fueron encontrados en muestras de referencia de los aceites extraídos con n-hexano (66,2-67,0%), mientras que el aceite prensado en frío comercial contenía significativamente menos PUFA (60,2%). Estos resultados muestran un mayor valor nutritivo del aceite obtenido por extracción con CO₂ supercrítico que el aceite prensado en frío que generalmente se considera que es muy valioso

Supersolid phases of light in extended Jaynes-Cummings-Hubbard systems

Jaynes-Cummings-Hubbard lattices provide unique properties for the study of correlated phases as they exhibit convenient state preparation and measurement, as well as "in situ" tuning of parameters. We show how to realize charge density and supersolid phases in Jaynes-Cummings-Hubbard lattices in the presence of long-range interactions. The long-range interactions are realized by the consideration of Rydberg states in coupled atom-cavity systems and the introduction of additional capacitive couplings in quantum-electrodynamics circuits. We demonstrate the emergence of supersolid and checkerboard solid phases, for calculations which take into account nearest neighbour couplings, through a mean-field decoupling.Comment: 9 pages with 6 figures, accepted for publication in Physical Review

Pytanie o sens życia

Nowadays more often people are asking about the meaning of life. It is a fundamental question that every human being faces. Man is asking whether life is worth living, what to do to make our life meaningful? A human being, among many needs, has the need for discovering the sense of life, the need comes from the very core of human existence as placed in time and connected with the phenomenon of passing away. Discovering the sense of life leads to the experience of happiness, joy, and to inner life lived much more to the full. Showing the meaning of life and helping to find that meaning are very important functions of religion. Due to it, a man is able to live one’s life, ambitions, goals, joyful moments as well as his or her suffering in the light of deeper understanding. Religion is the one that can often bring the richest and deepest answers to the question of the two meanings: the meaning of life and the world