Search results for "97"
showing 10 items of 1081 documents
Dune systems' characterization and evolution in the andalusia mediterranean coast (Spain)
2020
This paper deals with the characterization and evolution of dune systems along the Mediterranean coast of Andalusia, in the South of Spain, a first step to assess their relevant value in coastal flood protection and in the determination of sound management strategies to protect such valuable ecological systems. Different dune types were mapped as well as dune toe position and fragmentation, which favors dune sensitivity to storms&rsquo
Future Climate Forcings and Olive Yield in a Mediterranean Orchard
2014
The olive tree is one of the most characteristic rainfed trees in the Mediterranean region. Observed and forecasted climate modifications in this region, such as the CO2 concentration and temperature increase and the net radiation, rainfall and wind speed decrease, will likely alter vegetation water stress and modify productivity. In order to simulate how climatic change could alter soil moisture dynamic, biomass growth and fruit productivity, a water-driven crop model has been used in this study. The numerical model, previously calibrated on an olive orchard located in Sicily (Italy) with a satisfactory reproduction of historical olive yield data, has been forced with future climate scenar…
Application of minidisk infiltrometer to estimate water repellency in Mediterranean pine forest soils
2017
Assessment of soil water repellency (SWR) was conducted in the decomposed organic floor layer (duff) and in the mineral soil layer of two Mediterranean pine forests, one in Italy and the other in Spain, by the widely-used water drop penetration time (WDPT) test and alternative indices derived from infiltration experiments carried out by the minidisk infiltrometer (MDI). In particular, the repellency index (RI) was calculated as the adjusted ratio between ethanol and water soil sorptivities whereas the water repellency cessation time (WRCT) and the specifically proposed modified repellency index (RIm) were derived from the hydrophobic and wettable stages of a single water infiltration experi…
Nyt näen! : Leo Mellerin kirjallinen toiminta Suomessa 1971-1979
2016
Tässä työssä olen tutkinut Leo Mellerin kirjallista tuotantoa Suomessa vuosina 1971-1979 ja vertaillut sitä sen hetkisiin todellisiin maailmanpoliittisiin tapahtumiin. Olen pohtinut, mistä Meller on saanut kirjojensa aiheet ja miksi hän on tulkinnut kyseiset maailmanpoliittiset tapahtumat juuri siten kuin hän ne kirjoissaan esittää. Tutkin Leo Mellerin kirjallista toimintaa myös erilaisten historiallisten selitysmallien avulla. Näitä historiallisia selitysmalleja ovat idealistiset selitysmallit ja rakenteelliset selitysmallit. Tutkimukseeni keskittyy vuosiin 1971-1979. Vuodesta 1971 lähtien Leo Meller aloitti maailmanpoliittisten tilanteiden tutkimisen ja niiden tulkitsemisen Raamatun ennus…
Treatment of Oily Wastewater with Membrane Bioreactor Systems
2017
The aim of the present work was to investigate the behavior of a membrane bioreactor (MBR) system for the treatment of oily wastewater. A bench scale MBR was fed with synthetic wastewater containing diesel fuel. Organic carbon, hydrocarbon and ammonium removal, kinetic constants, extracellular polymeric substances production, and membrane fouling rates were monitored. The MBR plant was operated for more than 200 days, and the results highlighted good carbon removal and nitrification, suggesting a sort of biomass adaptation to hydrocarbons. Membrane fouling analysis showed an increase in total resistance, likely due to hydrocarbons, which caused an irreversible fouling (pore blocking) mainly…
Bioactivity of bioceramic materials used in the dentin-pulp complex therapy : a systematic review
2019
Este es el artículo que se ha publicado de forma definitiva en: https://www.mdpi.com/1996-1944/12/7/1015 Dentistry-applied bioceramic materials are ceramic materials that are categorized asbioinert, bioactive and biodegradable. They share a common characteristic of being specificallydesigned to fulfil their function; they are able to act as root canal sealers, cements, root repair or fillingmaterials. Bioactivity is only attributed to those materials which are capable of inducing a desiredtissue response from the host. The aim of this study is to present a systematic review of availableliterature investigating bioactivity of dentistry-applied bioceramic materials towards dental pulp stemcel…
The Role of Formal Education in Developing Critical Thinking Skills of Engineering Students
2020
The hereby paper intends to acknowledge and discuss the concept of critical thinking and the influence of this ability on engineering students. The purpose of this research is to establish the criteria according to which some students think more critically compared to other students in the same field of study. Logic is a term that seems simple, although very few know how to access that logical part of the human brain. This research has shown that the students’ level of critical thinking is not related to the year of study. Therefore, there are no activities in faculties that have a significant influence on the development of critical thinking. Moreover, it has resulted that female participa…
The General Education Act of 1970, a law for the modernization of Spain
2021
El artículo pretende desarrollar aspectos que ayuden a una mejor comprensión de la Ley General de Educación de 1970, y para ello examina los factores que permiten hablar de una Ley para la modernización de España. En este sentido se ha considerado que el rasgo más definitorio de la Ley es su ambición modernizadora del sistema educativo; de ahí que se concrete el concepto «modernización» y se estudien los precedentes y los ejes modernizadores de la Ley. También se ha prestado atención al contexto socioeconómico y político que ayuda a entender mejor su aparición. Dada su importancia, el artículo se detiene en analizar los obstáculos y resistencias que dificultaron su génesis y su aplicación, …
Ultimate Shear of RC Beams with Corroded Stirrups and Strengthened with FRP
2019
Transverse reinforcement plays a key role in the response behavior of reinforced concrete beams. Therefore, corrosion of steel stirrups may change the failure mode of elements from bending to shear, leading to a brittle and catastrophic crisis. It is important to strengthen reinforced concrete beams with corroded stirrups to enhance the shear resistance. This paper presents a formulation, based on the modified compression field theory, to estimate the ultimate shear of reinforced concrete beams strengthened with FRP, because of stirrup corrosion. The detrimental effect of corrosion on steel stirrup yield strength was taken into account by introducing an empirical decay law. The effective st…
Marginal and Internal Precision of Zirconia Four-Unit Fixed Partial Denture Frameworks Produced Using Four Milling Systems
2021
Background: CAD/CAM systems enable the production of fixed partial dentures with small and reproducible internal and marginal gaps. Purpose: The purpose of this study was to evaluate the reproducibility of the marginal and internal adaptations of four-unit fixed partial denture frameworks produced using four CAD/CAM systems. Materials and Methods: Prepared dies of a master model that simulated the loss of the first left molar were measured. Fifteen frameworks were manufactured using four CAD/CAM systems (A–D). The internal fit was determined by the replica technique, and the marginal gap was determined by microscopy. ANOVA was carried out to detect significant differences, and the Bonferron…