Search results for "Cinc"
showing 7 items of 47 documents
Synthesis of Chiral Catalyst Modifiers by Hydrosilylation of Cinchonidine and Their Application in the Hydrogenation of 1-Phenylpropane-1,2-dione and…
2005
Four new chiral modifiers were synthesized in order to investigate the effect of distal modifier substitution in the hydrogenation of ethyl pyruvate and 1-phenylpropane-1,2-dione on a supported Pt/Al2O3 catalyst. The chiral modifiers were prepared in good to moderate overall yields by Pt-catalyzed hydrosilylation of 9-O-TMS-protected cinchonidine with triethylsilane, triphenylsilane, bis(dimethylsilyl)ethane and (+)-(R)-methyl(1-naphthyl)phenylsilane followed by cleavage of the silyl ether protective group. Comparison of the synthesized modifiers in enantioselective hydrogenation using cinchonidine as reference modifier is reported, as well as details on their synthesis and characterization…
Alquinilación conjugada enantioselectiva de compuestos carbonílicos a,b-insaturados
2015
En los últimos años se ha dedicado un considerable esfuerzo hacia el desarrollo de reacciones de adición conjugada catalítica enantioselectiva de alquinos terminales a compuestos electrofílicos proquirales. Estos procedimientos proporcionan una forma sencilla de sintetizar compuestos con un centro estereogénico propargílico. Existen numerosos ejemplos de reacciones de alquinilación a compuestos carbonílicos e iminas, obteniendo alcoholes y aminas propargílicas respectivamente. Sin embargo, la alquinilación de compuestos carbonílicos α,β-insaturados ha sido menos estudiada. En los capítulos introductorios de la presente tesis se encuentra un estudio detallado de la bibliografía más relevante…
Zentrierung und Peripherisierung. Ideengeschichte und Sprachbeobachtungen anhand von Ricarda Huchs romantischem Syntheseentwurf
2017
The above text constitutes an attempt of thinking over the topie of displacement to the centre of the apprehension of the natural Sciences and pushing the humanities down to the outskirts. This process was introduced on the example of the literary texts reflecting the ideological changes of the ending XIX. century and starting XX. century. The change of apprehension paradigms of an individual in the world and the apprehension of the world by the individual is visible in our times also. On the example of the literary characteristic of Novalis written by Ricarda Huch, it was shown that it is possible to achieve a synthesis between the internal and external human zone and that only the achieve…
Martillo y cincel. Poemas e ilustraciones
2014
Sin resumen.
Funcionamiento familiar, personalidad y satisfacción vital en las parejas casadas
2017
Abstract.FAMILY FUNCTIONING, PERSONALITY AND LIFE SATISFACTION IN MARRIED COUPLESTheory and research suggest that the personality characteristics that each spouse brings to a relationship are related to marital and life satisfaction. Furthermore, a variety of studies have shown that Emotional Stability, Agreeableness, and Conscientiousness are strongly related to relationship satisfaction, which in turn benefits spouses’ satisfaction with life in general. Regarding family functioning, familial cohesion, defined as the degree of togetherness or closeness or emotional bonding that family members have toward one another, was found to be correlated with inter-personal well-being and satisfactio…
Sexual segregation of Echinorhynchus borealis von Linstow, 1901 (Acanthocephala) in the gut of burbot (Lota lota Linnaeus)
2015
Helminths often occupy defined niches in the gut of their definitive hosts. In the dioecious acanthocephalans, adult males and females usually have similar gut distributions, but sexual site segregation has been reported in at least some species. We studied the intestinal distribution of the acanthocephalan Echinorhynchus borealis von Linstow, 1901 (syn. of E. cinctulus Porta, 1905) in its definitive host, burbot (Lota lota Linnaeus). Over 80% of female worms were found in the pyloric caeca, whereas the majority of males were in the anterior two-thirds of the intestine. This difference was relatively consistent between individual fish hosts. Worms from different parts of the gut did not dif…
Stan badań nad paremiografią i paremiologią Śląska Cieszyńskiego
2019
The aim of the article is to present the current state of research on the paremiography and paremiology of Cieszyn Silesia. The first part presents and describes collections of proverbs from the region of Cieszyn, from the end of the 19th century to contemporary times. The second one discusses theoretical works (including folkloristic, linguistic, linguistic and cultural ones) dealing with the problems of proverbs from the region of Cieszyn, investigated in yarious contexts and from different research perspectives.