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161.
162.
Paula María Carmona-Quiroga Sagrario Martínez-Ramírez Santiago Sánchez-Cortés Mohamed Oujja Marta Castillejo María Teresa Blanco-Varela 《Journal of Cultural Heritage》2010,11(3):297-303
The elimination of spray paint using traditional (chemical and mechanical) methods inevitably entails altering surface characteristics. Hence, the impact and deterioration caused by graffiti in heritage buildings and monuments have led to the development and application of preventive systems in the form of antigraffiti coatings (which prevent paint from seeping into the pores of the surface material and facilitate cleaning). The effectiveness of two of these treatments, a commercial product (fluoroalkyl siloxane, protectosil, marketed by Degussa) and a hybrid organic-inorganic material (Ormosil), was evaluated in five construction materials (limestone, granite, cement mortar, lime mortar and brick), in terms of their penetration into the substrate. A number of techniques were used to determine the penetration depth (SEM/EDX, micro-Raman and LIBS), because a comparative analysis showed that none was universally valid for all types of treatments. The results show that the presence of the coating on the surface of less porous materials only ensures effective cleaning when the surface is fairly smooth. In granite, for instance, the CF3 terminals in the fluorinated treatment hinder spray paint bonding more effectively than Ormosil, but not efficiently enough to ensure complete removal of the paint from granite surfaces. 相似文献
163.
Marta Fonolleda 《Environmental Education Research》2014,20(2):284-285
164.
Marta Giménez-Dasí Marta Fernández-Sánchez Laura Quintanilla 《Early education and development》2013,24(8):1128-1144
Research Findings: The goal of this study was to determine the efficacy of an educational intervention program to improve emotion knowledge, emotion regulation, and social competence in 2-year-old Spanish children. This study makes two original contributions because there are no validated education programs for such young children and because it aims to show how an intervention focused on emotion-related aspects affects children’s social competence. The pilot study was conducted on 57 Spanish 2-year-olds divided into an experimental group (n = 38) and a control group (n = 19). The children were assessed for overall development, emotion knowledge, emotion regulation, and social competence before and after the intervention. The program was carried out in the classroom in 30-min weekly sessions over a 6-month period. The findings showed significant progress in emotion knowledge and social competence as well as slight progress in emotion regulation. Practice or Policy: Our results show that emotions should be part of the curriculum starting in early childhood. On the one hand, 2-year-olds can benefit from planned interventions that improve social competence through emotion knowledge. On the other hand, 24 months is developmentally speaking the perfect age to start acquiring emotion knowledge through the simplest components. 相似文献
165.
166.
Building relationships between universities and industry bodies is of prime importance for creating value for universities’
stakeholders. This paper focuses on relationships in relation to undergraduate internship programmes in the Social Sciences.
Using the relationship marketing approach, we analyze this type of collaboration of firms with a large public Spanish University.
We build and test a structural equations model whose results show that communication is a key building block of relationships,
having a positive effect on satisfaction with the relationship, trust and functionality of conflict, and that trust and commitment
increase the level of collaboration of firms with universities. 相似文献
167.
Montserrat Castelló Anna I?esta Marta Pardo Eva Liesa Reinaldo Martínez-Fernández 《Higher Education》2012,63(1):97-115
This intervention study aimed at helping undergraduate students of psychology learn to use the discursive resources useful
to make academic voice visible in their texts and to improve their writing practices. The intervention involved tutorial meetings
and collaborative revisions in two different learning environments, on-line and face-to face. The final text quality, the
students’ knowledge and the amount and the quality of revisions were assessed in both conditions. Results show that the quality
of the texts improved for both intervention groups in contrast with for control group, and better texts were related with
higher rates of revision and more students’ satisfaction with the intervention. 相似文献
168.
Mohamed Oujja Esther Rebollar Marta Castillejo Concepcin Domingo Concepcin Cirujano Fernando Guerra-Librero 《Journal of Cultural Heritage》2005,6(4):321-327
Laser cleaning has been used to restore the soiled terracotta statues and decorations of the tympanum of the portal of Palos of the Cathedral of Seville in Spain. A simultaneous laboratory study performed on a representative sample helped to identify the optimum laser conditions to remove the dark soiling layer produced by air pollution. It was found that irradiation at 1064 nm with a Q-switched Nd:YAG laser was more effective than the harmonic wavelengths of 532 or 266 nm. LIBS and Raman microscopy gave information on the composition of terracotta and identified the presence of a protective layer made of gypsum and calcite. As detected by Raman spectroscopy, laser irradiation caused the elimination of the carbon component of the soiling layer and the appearance of an anhydrite component in the laser irradiated gypsum layer applied over the terracotta substrate for protective purposes. Local heating of the surface caused by laser irradiation at 1064 nm, the laser wavelength used for restoration of the portal, might be responsible for a process of partial dehydration of gypsum into anhydrite. 相似文献
169.
Marta Zieba 《Journal of Cultural Economics》2016,40(2):191-221
This paper investigates the impact of tourism flows on demand for large regional and city theatres in Austria over the period from 1972 to 2011 (39 years). The results are obtained by applying an aggregated theatre demand function for both residents and tourists. The elasticity of theatre attendance in response to tourism is estimated along with other standard demand variables such as ticket price and income. The quality factors and theatre-specific effects are also included. The tourism flows variables are derived using detailed data set on tourist arrivals and their overnight counts, and they are also split between domestic and foreign tourists. To measure the impact of tourism flows on theatre demand, three alternative theatre markets specifications are considered. The total elasticity of attendance per capita in response to tourism is estimated between 15 and 20 %, indicating that increasing the number of arrivals by two tourists per resident in the relevant market would generate an increase in theatre attendance by 581–680 thousand visitors per year. The role of tourism flows is found to be particularly important for attendance at opera, operetta and musicals as opposed to attendance at drama performances. The analysis also reveals that foreign, non-German tourists have a positive impact on theatre attendance, whereas domestic tourists do not contribute significantly to higher demand for Austrian theatres. 相似文献
170.
Cruz-Guzmán Marta García-Carmona Antonio Criado Ana M. 《Research in Science Education》2020,50(5):1689-1711
Research in Science Education - This article presents a qualitative study of the type and quality of questions formulated by prospective elementary teachers (PETs) when designing scientific inquiry... 相似文献