Pulsed laser deposition of KNbO₃ thin films

The laser ablation of stationary KNbO3 single crystal targets induces a Nb enrichment of the target surface. In rotated targets this effect is observed only in those areas irradiated with low laser fluence. The composition of the plasma formed close to the target surface is congruent with the target composition; however, at further distances K-deficient films are formed due to the preferential backscattering of K in the plasma. This loss may be compensated for by using K-rich ceramic targets. Best results so far have been obtained with [K]/[Nb] = 2.85 target composition, and crystalline KNbO3 films are formed when heating the substrates to 650 °C. Films formed on (100)MgO single crystals are usually single phase and oriented with the (110) film plane parallel to the (100) substrate surface. (100)NbO may coexist with KNbO3 on (100)MgO. At substrate temperatures higher than 650 °C, niobium diffuses into MgO forming Mg4Nb2O9 and NbO, leading to K evaporation from the film. Films formed on (001) alpha-Al2O3 (sapphire) show the coexistence of (111), (110), and (001) orientations of KNbO3, and the presence of NbO2 is also observed. KNbO3 films deposited on (001)LiNbO3 crystallize with the (111) plane of the film parallel to the substrate surface. For the latter two substrates the Nb diffusion into the substrate is lower than in MgO and consequently the K concentration retained in the film is comparatively larger

Més clar que l'aigua

Abstract not availabl

Crítica

Abstract not availabl

Crítica

Abstract not availabl

Addressing Sustainability in Fashion Through Goal Frames and the Theory of Planned Behavior Perspectives

The throwaway fast fashion culture leads to increasing wasteful consumption and the dwindling of the world’s natural resources. Thus, it has become apparent that for the good of the environment, consumers need to decrease frequency of buying clothes as a form of pro-environmental behavior (PEB). By linking the Theory of Planned Behavior and Goal-Framing Theory, this study determined factors that can encourage consumers towards PEB performance as well as the influence of goal frames on these factors. This study also explored how consumers’ clothing involvement moderates the effectiveness of these goal frames. Experiments with 350 female respondents were conducted. Results showed that attitude was significantly influenced by environment-frame, while subjective norms was influenced both by environment-frame and image-frame. Results also established a moderating effect of clothing involvement due to enjoyment on the influence of image-frame on subjective norms. The implications in the field of environmental communications were also discussed

Crítica

Abstract not availabl

Rasgos generales estratigráficos y sedimentológicos del macizo urgoniano de Gorbea, Región Vasco-Cantábrica Central

Se diferencian 8 unidades urgonianas dentro de un esquema de plataforma mixta con individualización final de un banco carbona-iado, en el Aptiense-Albiense medio del macizo de Gorbea (Vizca ya). Pulsaciones tectónicas sinsedimentarias, incluyendo fracturación blandel zócalo y halocinesis, además de variaciones relativas del nivel del tectómar, constituyen los principales controles en el desarrollo y evolución de la plataforma

Epidemic spreading on interconnected networks

Many real networks are not isolated from each other but form networks of networks, often interrelated in non trivial ways. Here, we analyze an epidemic spreading process taking place on top of two interconnected complex networks. We develop a heterogeneous mean field approach that allows us to calculate the conditions for the emergence of an endemic state. Interestingly, a global endemic state may arise in the coupled system even though the epidemics is not able to propagate on each network separately, and even when the number of coupling connections is small. Our analytic results are successfully confronted against large-scale numerical simulations

Rasgos generales estratigráficos y sedimentológicos del macizo urgoniano de Gorbea, Región Vasco-Cantábrica Central

Se diferencian 8 unidades urgonianas dentro de un esquema de plataforma mixta con individualización final de un banco carbona-iado, en el Aptiense-Albiense medio del macizo de Gorbea (Vizca ya). Pulsaciones tectónicas sinsedimentarias, incluyendo fracturación blandel zócalo y halocinesis, además de variaciones relativas del nivel del tectómar, constituyen los principales controles en el desarrollo y evolución de la plataforma

Humour in Power-Differentiated Intergroup Wage Negotiation

This research examined the role of humour in power-differentiated wage bargaining conversations. We collected transcripts of wage bargaining between the local labour union and management negotiators of a multinational beverage company operating in the Philippines. Through conversation analysis, we determined how both parties utilised humor to challenge or maintain power relations even as both labour and management worked towards a wage bargaining agreement. Findings show that humour was used to maintain intergroup harmony, subvert authority and control the negotiation. Our findings may be useful for labour organisations and multinational corporations that operate in Southeast Asian countries with historically tumultuous labour relations such as the Philippines. Studies have shown how humour can play a significant role in various social interactions, such as business meetings (Rogerson-Revell, 2007), conversations between friends (Hay, 2000) and co-workers (Holmes, 2000), problem solving (Dunbar, Banas, Rodriguez, Liu, & Abra, 2012), conflict negotiations (Maemura & Horita, 2012) and price haggling (O’Quin & Aronoff, 1981). We note, however, that humour analysis rarely considers asymmetric features of social interactions occurring within the context of negotiation