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Wyświetlanie 1-2 z 2
Tytuł:
Psychologia ewolucyjna - nauka o adaptacjach i ewolucyjnej inercji ludzkiego umysłu
Evolutionary psychology - adaptations and evolutionary inertion of human mind
Autorzy:
Pawłowski, Bogusław
Danel, Dariusz
Powiązania:
https://bibliotekanauki.pl/articles/1196009.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Przyrodników im. Kopernika
Opis:
Evolutionary psychology (EP) attempts to explain human preferences and psychological mechanisms that are related to human behaviour as evolutionary adaptations. Among such biological approaches explaining human behavior as human ethology, sociobiology or human behavioural ecology, EP seems to develop presently in the fastest way and has already many proponents amongst biologists and psychologists. We present the biological theories that allowed the emergence of EP (e.g. natural and sexual selection, inclusive fitness, parental investment, reciprocal altruism, evolutionary game theory) and main principles of EP. According to EP, human brain functions as a "computer" designed by natural or sexual selection that are related with psychological adaptations that evolved to solve recurrent problems in environments (both physical and social) in which our ancestors lived. This means that cognitive programs are adaptations which promoted some types of preferences and behaviours that increased biological fitness. EP accepts modularity of mind, what means that mind is composed of separate modules to solve different adaptive problems (this opposite view is that human mental faculties are general-purpose learning mechanisms). We discuss the idea of the environment of evolutionary adaptedness (EEA), and explain why EP claims that not all presently observed human preferences and behaviours maximise biological fitness. Furthermore, we present the main areas of research in EP (survival, mate choices, relationships within family as well as conflicts and cooperation in a group). We also discuss the controversies related to the EP presumptions or interpretations and in the final part of the paper we suggest that EP could give better understanding of human preferences and behaviour if it would include higher behavioural plasticity of man, quantity dependent behavioural strategies or cultural impact on human behaviour.
Źródło:
Kosmos; 2009, 58, 3-4; 573-583
0023-4249
Pojawia się w:
Kosmos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bond strength of modern self-adhesive resin cements to human dentin and different CAD/CAM ceramics
Autorzy:
Małysa, Andrzej
Weżgowiec, Joanna
Danel, Dariusz
Boening, Klaus
Walczak, Katarzyna
Więckiewicz, Mieszko
Powiązania:
https://bibliotekanauki.pl/articles/27324142.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
shear bond strength
self-adhesive resin cement
dentin
CAD/CAM ceramic
dental material
adhesion
wytrzymałość wiązania na ścinanie
samoadhezyjny cement na bazie żywicy
zębina
Ceramika CAD/CAM
materiał dentystyczny
przyczepność
Opis:
The aim of the study was to evaluate the shear bond strength of CAD/CAM ceramics to dentin after cementation with conventional or self-adhesive resin cements. Methods: Three self-adhesive, self-etching cements (Panavia SA, RelyX U200, Maxcem Elite), and one conventional cement (Panavia V5), were selected to lute three CAD/CAM ceramics (IPS Empress CAD, IPS e.max CAD, IPS e.max ZirCAD) onto the dentin. The bond strength was evaluated using a shear strength test according to the PN-EN ISO 29022:2013-10. Evaluation of the differences was performed using the Statistica software. Failure modes were analyzed using a light microscope. Results: All the studied cements differed (regardless of the ceramic type) in the bond strength. The highest bond strength was observed in Panavia V5, lower – in RelyX U200 and Panavia SA, and the lowest – in Maxcem. For IPS e.max ZirCAD, it was observed that compared to Panavia V5, the other cements were characterized by a significantly higher bond strength. For the IPS Empress CAD and the IPS e.max CAD, Panavia V5 displayed the highest bond strength. For all the studied self-adhesive cements, the failure of adhesion between the cement and dentin was predominant mode. Conclusions: Significant differences were found in the shear bond strengths of the CAD/CAM ceramics luted to dentin using tested self-adhesive and conventional cements. The bond strength depended on the combination of ceramic and cement. The IPS e.max ZirCAD had the highest bond strength to dentin after cementation with RelyX U200, while the IPS Empress CAD and IPS e.max CAD – with Panavia V5.
Źródło:
Acta of Bioengineering and Biomechanics; 2020, 22, 2; 25--34
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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