Class B greenhouse model with double layer for Nordic European countries

[EN] This paper presents functional and structural possibilities of Class B greenhouses, which has a film covered, for areas with extreme winter temperatures and heavy snow loads, which are typical of a Class A model (glass or rigid film covered). This greenhouse study covers from its analysis in the design phase to its correct operation after construction, breaking patterns set by European standard, due to the structural design of the greenhouse, providing new possibilities for this type B, restricted to a specific geographical area so far.We gratefully acknowledge INVERCA S.A for work and technical assistance, and provide data and information necessary after construction of the greenhouse.Rovira Soler, JA.; Martín Concepcion, PE.; Almerich Chulia, AI.; Molines Cano, JM. (2014). Class B greenhouse model with double layer for Nordic European countries. Advanced Materials Research. 1065-1069:1046-1051. doi:10.4028/www.scientific.net/AMR.1065-1069.1046S104610511065-1069K. Berna. Structural analysis of greenhouse: a case study in Turkey. Building and Environment Vol. 41 (2006), pp.864-871.J. Nebot, J. Rovira, J. Garro, J. Martin, A. Aguado, A. Bonilla, A. Alonso, A. Committee technical CEN nº 284 (1998).J. Bosco. Horticultura. Revista de Hortaliza, Flores y Plantas Ornamentales Vol. 6. (1992).EN13031-1. Greenhouse: Design and construction - Part 1: Commercial production greenhouses (2002).P. Martin. Invernaderos de cubierta flexible: modelización de la acción del viento. Thesis. Editorial UPV (2003).O. Yekutieli, L. Dubinski, I. Kleinmann. Analysis of forces acting due to strong wind loads on structure and cover of walk-in tunnel. International Conference and British-Israeli workshop on greenhouse technologies (1997), pp.53-61.A. Mistriotis, D. Briassoulis. Numerical estimation of the internal and external aerodynamic coefficients of a tunnel greenhouse structure with openings. Computers and Electronics in Agriculture Vol. 34 (2002), pp.191-205.D. Briassoulis. Mechanical design requirements for low tunnel biodegradable and conventional films. Biosystems Engineering Vol. 87 (2) (2004), pp.209-223.A. Robertson, P. Roux, J. Gratraud, G. Scarascia, S. Castellano, M. Dufresne de Virel, P. Palier. Wind pressures on permeably and impermeably-clad structures. Journal of Wind Engineering and Industrial Aerodynamics Vol. 90 (4-5) (2002)

Comparison of the touch-screen and traditional versions of the Corsi block-tapping test in patients with psychosis and healthy controls

Background: Working memory (WM) refers to the capacity system for temporary storage and processing of information, which is known to depend on the integrity of the prefrontal cortex. Impairment in working memory is a core cognitive deficit among individuals with psychotic disorders. The Corsi block-tapping test is a widely-used instrument to assess visuospatial working memory. The traditional version is composed of 9 square blocks positioned on a physical board. In recent years, the number of digital instruments has increased significantly; several advantages might derive from the use of a digital version of the Corsi test. Methods: This study aimed to compare the digital and traditional versions of the Corsi test in 45 patients with psychotic disorders and 45 healthy controls. Both groups completed a neuropsychological assessment involving attention and working memory divided into the two conditions. Results: Results were consistent between the traditional and digital versions of the Corsi test. The digital version, as well as the traditional version, can discriminate between patients with psychosis and healthy controls. Overall, patients performed worse with respect to the healthy comparison group. The traditional Corsi test was positively related to intelligence and verbal working memory, probably due to a more significant effort to execute the test. Conclusions: The digital Corsi might be used to enhance clinical practice diagnosis and treatment.The digital version can be administered in a natural environment in real-time. Further, it is easy to administer while ensuring a standard procedure

The BCN-SGA student chapter: a tool for insertion to research and laboral world in metallogeny

The activity of the BCN-SGA Student Chapter is evaluated. Establishedin 2012 it has grown up to 69 members, organizing 2 international workshops, 8seminars, numerous visits to museums, activities stimulating the use of English in socialevents and microresearch projects. The results of these microprojects are 15 presentations in scientific congresses. These activities enhance teamwork skills anddemonstrate that students can develop high quality research during the whole of theirformation.Peer ReviewedPostprint (published version

Minerales 'exóticos' en cromititas ofiolíticas. Implicaciones para la geodinámica mantélica

Los depósitos ofiolíticos de cromita constituyen un rasgo característico de la secuencia mantélica de las ofiolitas (González-Jiménez et al., 2014 y referencias en éste). Los cuerpos de cromititas se encuentran en dunitas y harzburgitas distribuyéndose a lo largo de una zona de espesor variable, entre 1 y 2 km, debajo de los niveles de gabros bandeados de la corteza inferior oceánica. El origen de cuerpos monominerálicos de cromita en el manto, especialmente el mecanismo de concentración de cromita y el ambiente tectónico de formación, continúa siendo un tema sujeto a debate (e.g., Proenza et al., 1999; González-Jiménez et al., 2014). A tal efecto, se han propuesto hipótesis basadas en: i) cristalización cotéctica de cromita+olivino y su posterior separación mecánica; ii) procesos de mezcla o contaminación de magmas; iii) asimilación de piroxenitas y gabros; iv) aumento del grado de polimerización del fundido debido a la pérdida de agua; v) cambios en la fugacidad de oxígeno. Todas estas hipótesis asumen procesos a baja presión en el manto (<20 km profundidad)

The BCN-SGA student chapter: a tool for insertion to research and laboral world in metallogeny

The activity of the BCN-SGA Student Chapter is evaluated. Establishedin 2012 it has grown up to 69 members, organizing 2 international workshops, 8seminars, numerous visits to museums, activities stimulating the use of English in socialevents and microresearch projects. The results of these microprojects are 15presentations in scientific congresses. These activities enhance tea

Les col·leccions de mineralogia de la UB. Una eina d'aprenentatge i de participació dels estudiants

Les col·leccions de Mineralogia de la Universitat de Barcelona poden ser de litoteca (emprades en l'ensenyament presencial i no presencial) i sistemàtica (usades com a material de referència de recerca). Comprenen mostres de mà, làmines primes i probetes. Les col leccions de referència son controlades per estudiants, els quals comproven la identitat del mineral i en fan la catalogació. Així s'introdueix els estudiants en les tècniques de caracterització i en les tècniques de musealització

Fire Endurance of Concrete Elements Reinforced With GFRP Bars

[EN] Fire engineering is primarily to prevent loss of life or injury during a fire. Obviously the best way to achieve this is to prevent ignition, minimizing fire spread and smoke, dying the fire before it has fully developed. When this is not possible, when the fire is fully developed, structural elements must guarantee sufficient fire resistance. If containment methods fail, structural integrity must stay for a period long enough to evacuate occupants and firemen put out it. This investigation studies the bearing capacity of GFRP reinforced concrete element, its fire resistance, variations of its mechanics characteristics and its bonding to concrete when temperature rises, together others changes that may occur in the element.Almerich Chulia, AI.; Molines Cano, JM.; Martín Concepcion, PE.; Rovira Soler, JA. (2013). Fire Endurance of Concrete Elements Reinforced With GFRP Bars. Advanced Materials Research. 651:181-186. doi:10.4028/www.scientific.net/AMR.651.181S181186651FARDIS M.N.; KHALILI, H. Concrete encased in fibreglass-reinforced plastic,. ACI Journal Vol. 78 (38) pp.440-446. (1981).TANANO, H.; MASUDA, Y; TOMOSAWA, F. Characteristics and performance evaluation methods of continuous fibre bars – state of the art studies on fire properties and durability of continuous fibre reinforced concrete in Japan,. Proceedings 4th International Symposium on Non-Metallic (FRP) Reinforcement for Concrete Structures, pp.523-531.ROVIRA, J.A. Modelo teórico de secciones de hormigón armadas con redondos GFRP,. Universdad Politecnica de Valencia, Spain. (2009).ROVIRA, J. Barra a base de polímeros reforzados con fibras para el armado del hormigón,. Patente nº ES 2 235 011, (2010).ANDERBERG, Y. Spalling phenomena of HPC and OC,. NIST Workshop on fire performance of high strength concrete. Gaithersburg, Sweden. (1997).ALMERICH CHULIA, A. Diseño, según estados límites, de estructuras de hormigón armado con redondos de fibra de vidrio GFRP,. Tesis, Univ. Politécnica Valencia, Spain (2010)

Innovative design of GFRP bars for Concrete Structures

[EN] This part analyzed GFRP rebar's research situation, summarized its behaviuor as internal reinforcement for concrete structures. The research has been developed over recent years, however the rules and standard codes for design RC concrete structures with these rebars not consider that the internal reinforcement can work in compression. This paper presents the development of the research to get a new kind GFRP rebar for work as internal reinforcement of concrete structures, with an innovative design for work both in tension and compression, and their mechanical properties: strength, bond,.... © (2012) Trans Tech Publications.Almerich Chulia, AI.; Martín Concepcion, PE.; Molines Cano, JM.; Rovira Soler, JA. (2012). Innovative design of GFRP bars for Concrete Structures. Advanced Materials Research. 457-458:553-556. doi:10.4028/www.scientific.net/AMR.457-458.553S553556457-458Nanni, A. (ed. ) Fiber-Reinforced-Plastic (GFRP) Reinforcement for Concrete Structures: Properties and applications,. Elsevier Science. Developments in Civil Engineering, 42, p.450. (1993).Benmokrane, B.; Challal. O. Physical and mechanical performance of an innovative glass-fiber-reinforced plastic rod for concrete and grouted anchorages,. Canadian Journal Civil Engineering, 20, 254-268 (1993).Neale, K.W.; Labossière, P. (eds. ) Advanced composite materials on bridges and structures,. 1st Int. Conf. Sherbrooke, Quèbec, Canadian Society for Civil Engineering, 700 (1992).Nanni, A.; Dolan, C.W. ) (eds. ) Fiber-reinforced-plastic reinforcement for concrete structures, International Symposium,. American Concrete Institute (ACI), SP-138, 177 (1993).Dolan, C.W. FRP prestressing in the USA,. Concrete International 21(10), 21-24, (1999).Taerwe, L.R.; Matthys, S. FRP for concrete structures,. Concrete International 21(10), 33-36, (1999).Fukuyama, H. FRP composites in Japan,. Concrete International 21(10), 29-32 (1999).Rovira, J.A. Barra a base de polimero Barra a base de polímeros reforzados con fibras para el armado del hormigón,. Patente nº ES 2 235 011, (2010).Arteaga, A.; López, C.; Informe nº 19. 596-I. Ensayos de tracción, compresión y adherencia de redondos de materiales compuestos para su uso en hormigón". Instituto de ciencias de la Construcción "Eduardo Torroja, (IETcc), Madrid, Spain, (2009).Almerich Chulia, Ana-I. Diseño, según estados límites, de estructuras de hormigón armado con redondos de fibra de vidrio GFRP,. Tesis, Universidad Politécnica de Valencia, Valencia, Spain (2010)

Adolescent cancer care: What has changed in Spain in the past decade?

Introduction and objective: In 2012, the Adolescents with Cancer working group published the results of a survey on care delivery for the adolescent population in Spain as a starting point for future intervention. The aim of this nationwide survey was to outline the current situation and assess whether the implemented strategies have resulted in changes in care delivery.Material and methods: Survey consisting of the same items analysed and published in 2012. The questionnaire was structured into sections devoted to epidemiology, psychosocial care, infrastructure, treatment and follow-up of adolescents with cancer. It was submitted to all hospitals in Spain with a paediatric haematology and oncology unit. We conducted a descriptive analysis of the results.Results: The percentage of patients aged up to 18 years managed in paediatric units has increa-sed from 35.9% to 77.5% in the past decade. The proportion of malignant blood tumours treated in paediatric units increased from 31% to 52%, and the proportion of solid tumours from 49% to 85%. In 2012, 30 units (out of 39) reported that new cases in adolescents amounted to up to 10% of the total. At present, only 14 (out of 40) continue to report this percentage. A decade ago, there were no specific adolescent cancer units in Spain. Now, 7 centres (out of 40) have specific multidisciplinary units. There has been little change in psychological support services for adolescents. The follow-up of survivors is carried out by paediatric specialists in 82.5% of the hospitals.Conclusions: The efforts made to centralise the care of adolescents with cancer in specific multidisciplinary adolescent units or, failing that, paediatric units, is reflected in the changes in care delivery in Spain in the past decade. Much remains to be done in key components of the management of adolescents with cancer.(c) 2022 Asociaci acute accent on Espan tilde ola de Pediatri acute accent a. Published by Elsevier Espan tilde a, S.L.U. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/ 4.0/)

Cryptic alkaline magmatism in the oceanic Caribbean arc (Camagüey area, Cuba)

Mid and Late Cretaceous arc-related basaltic rocks in the Camagüey area, East Central Cuba, record an intriguing seemingly random enrichment in alkalis that suggests alkaline affinity, representing an oddity in the Greater Antilles. In this study, the petrology and geochemistry of volcanic rocks from the Camujiro, Piragua and La Mulata Formations have been investigated. The rocks bear a diverse mineral assemblage including feldspars (plagioclase and potassium feldspar), clinopyroxene, phlogopite and amphibole with both equilibrium and disequilibrium textures. Clinopyroxene porphyritic crystals show conspicuous oscillatory and convolute zoning and reveal events of mafic recharge and crystallization in equilibrium with alkaline and calc-alkaline basaltic magmas and their mixtures. Composition of fluorophlogopite xenocrystals is consistent with crystallization from mafic alkaline liquids. Unlike whole-rock major element composition, immobile trace element abundances suggest a systematic calc-alkaline affinity. Chondrite-normalized rare-earth element (REE) patterns are similar to those of calc-alkaline and high-K (and single bondTh) calc-alkaline rocks from the Caribbean Antilles. Geochemical modelling indicates that the parental basic magmas formed by a 5-10% hydrous partial melting of spinel-facies depleted mantle fluxed by fluids evolved from subducted oceanic crust and pelagic sediments, as well as fractional crystallization. Random enrichment in alkalis in studied samples is attributed to the entrainment during ascent of material derived from mafic alkaline melts injected in the upper mantle or the root of the island-arc. Our new data establish a mature stage in the evolution of the Caribbean island-arc by Cenomanian times capable of sourcing alkaline melts and the existence of a thickened island arc crust that favored fractional crystallization and magma chamber recharge processes unlike in previous stages of the island-arc construction