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Št. zadetkov: 6
Aging of polyetheretherketone (PEEK) and polyphthalamide (PPA) in polar and non-polar lubricant base oils
Pedro Martins Ferreira, Bruno Trindade, Mitjan Kalin
Izvirni znanstveni članek
Oznake: polietereterketon;poliftalamid;maziva;PAO;estri;staranje;polyetheretherketone;polyphthalamide;lubricants;esters;aging;
The lubrication of high-performance polymers allows the more widespread use of these materials in mechanical systems. This work aims to study the compatibility of polyetheretherketone (PEEK) and polyphthalamide (PPA) with polar and non-polar lubricant base oils by inducing aging. Polymer discs were ...
Leto: 2024 Vir: Fakulteta za strojništvo (UL FS)
Lubrication of polyphthalamide (PPA) and polyetheretherketone (PEEK) with biodegradable synthetic esters
Pedro Martins Ferreira, Quentin Arnoux, Catherine Charrin, Bruno Trindade, Mitjan Kalin
Izvirni znanstveni članek
Oznake: tribology;polyetheretherketone;polyphthalamide;synthetic esters;PAO;adsorption;
This study aims to evaluate the tribological behavior of polyphthalamide (PPA) and polyetheretherketone (PEEK) lubricated with biodegradable synthetic esters. Tribological tests were performed at 23 ◦ C and 100 ◦ C with new and aged samples to assess the effects of increased temperature and polymer ...
Leto: 2024 Vir: Fakulteta za strojništvo (UL FS)
Transport and consumption of organic detritus in a neotropical limestone cave
Leopoldo Ferreira de Oliveira Bernardi, Rodrigo Lopes Ferreira, Rogério Parentoni Martins, Marconi Souza Silva
Izvirni znanstveni članek
Oznake: caves;organic detritus processing;energy flow;
Leto: 2012 Vir: dLib.si Digitalna knjižnica Slovenije
Transport and consumption of organic detritus in a neotropical limestone cave
Marconi Souza Silva, Leopoldo Ferreira de Oliveira Bernardi, Rogério Parentoni Martins, Rodrigo Lopes Ferreira
Ni določena
Oznake: cave; detritus processing; energy flow
Caves are permanently aphotic environments, a fact that precludes the occurrence of photosynthetic organisms. In these systems the resource is allochthonous, coming mainly from the surrounding epigean environment, being imported by physical and biological agents. Even knowing about the importance of ...
Leto: 2012 Vir: ZRC SAZU
Occurrence of anurans in brazilian caves
Rodrigo Matavelli, Aldenise Martins Campos, Renato Neves Feio, Rodrigo Lopes Ferreira
Ni določena
Oznake:
Brazil has the greatest diversity of anurans and also one of the greatest speleological patrimonies in the world. However, informations about anurans in Brazilian caves including different biomes and lithologies are scarce. This study sampled 223 caves divided into different biomes (Amazon, Atlantic ...
Leto: 2015 Vir: ZRC SAZU
Occurrence of anurans in brazilian caves
Rodrigo Matavelli, Aldenise Martins Campos, Renato Neves Feio, Rodrigo Lopes Ferreira
Izvirni znanstveni članek
Oznake:
Brazil has the greatest diversity of anurans and also one of the greatest speleological patrimonies in the world. However, informations about anurans in Brazilian caves including different biomes and lithologies are scarce. This study sampled 223 caves divided into different biomes (Amazon, Atlantic ...
Leto: 2015 Vir: ZRC SAZU
Št. zadetkov: 6
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