Search results for "Horizontal"
showing 10 items of 251 documents
The Grid: As a Starting Point and an End Point of Ornament
2017
Ornament was one of the key concepts in the nineteenth century discussions on architecture and decorative arts. In the beginning of the twentieth century, modernism abandoned ornament from its vocabulary. In the last decades of the twentieth century, the heritage of Modernism and its rejection of ornament were critically analyzed and ornament became a topical subject once more. Geometry played an important role in the search for rational and intellectual basis for the architecture and decorative arts in the beginning of industrial age. Arabic ornamental practice with its geometrical foundation served as one precept in searching and formulating appropriate design principles for architecture …
UV Index on Tilted Surfaces
2007
Solar ultraviolet erythemal irradiance (UVER) has been studied on inclined planes with different orientations in Valencia, Spain. To do this a platform was designed that could turn through 90 degrees on its own axis. The radiometers were inclined at an angle close to the latitude of Valencia (39.5 degrees N). Using two timers the platform could be turned through 90 degrees every 5 min. On clear or partially cloudy days, including those with different turbidity values, it was observed that the UVER showed a maximum at 1200 h GMT, very close to solar noon, in the north and south positions, while the maximum for east and west orientations was found at approximately one hour before and one hour…
dUTPasas, una nueva familia de proteínas señalizadoras
2019
Las dUTPasas (Duts) se clasifican en tres familias: monoméricas, diméricas y triméricas. Recientemente se han descrito funciones alternativas asociadas a estas enzimas y en algunos casos está asociada a inserciones no requeridas para la actividad catalítica, como es el caso de las Duts triméricas de fagos de S. aureus. Estas Duts inducen islas de patogenicidad de S. aureus (SaPIs) mediante la interacción con el represor de SaPI, la proteína Stl. En esta tesis identificamos fagos de S. aureus que codifican para Dut dimérica en lugar de trimérica, y que también tienen capacidad para movilizar SaPIs. El estudio del mecanismo molecular que rige la interacción entre Dut dimérica y S…
Treatment of Combined Dairy and Domestic Wastewater with Constructed Wetland System in Sicily (Italy). Pollutant Removal Efficiency and Effect of Veg…
2021
Dairy wastewater (DWW) contains large amounts of mineral and organic compounds, which can accumulate in soil and water causing serious environmental pollution. A constructed wetland (CW) is a sustainable technology for the treatment of DWW in small-medium sized farms. This paper reports a two-year study on the performance of a pilot-scale horizontal subsurface flow system for DWW treatment in Sicily (Italy). The CW system covered a total surface area of 100 m2 and treated approximately 6 m3 per day of wastewater produced by a small dairy farm, subsequent to biological treatment. Removal efficiency (RE) of the system was calculated. The biomass production of two emergent macrophytes was dete…
Semigenerated Carnot algebras and applications to sub-Riemannian perimeter
2021
This paper contributes to the study of sets of finite intrinsic perimeter in Carnot groups. Our intent is to characterize in which groups the only sets with constant intrinsic normal are the vertical half-spaces. Our viewpoint is algebraic: such a phenomenon happens if and only if the semigroup generated by each horizontal half-space is a vertical half-space. We call semigenerated those Carnot groups with this property. For Carnot groups of nilpotency step 3 we provide a complete characterization of semigeneration in terms of whether such groups do not have any Engel-type quotients. Engel-type groups, which are introduced here, are the minimal (in terms of quotients) counterexamples. In add…
Construyendo el espacio geográfico a partir del mundo subjetivo de los alumnos
2014
El presente trabajo se enmarca dentro de la geografía subjetiva. A través de un estudio de caso se observa cómo las experiencias personales de los niños y niñas influyen en la construcción y en la deformación del espacio geográfico. Este documento puede servir de orientación para poner en práctica un proyecto de innovación, pues se ofrece una secuencia de actividades donde se trabaja el conocimiento y la autonomía espacial. This work is part of subjective geography. A case study shows how children's personal experiences influence the construction and deformation of geographic space. This may provide guidance to implement an innovation project. The series of activities which are proposed wor…
Mantenimiento temporal de la equidad horizontal en el sistema de financiación autonómica.
2011
Este trabajo propone un mecanismo de actualización del sistema de financiación autonómica que mantiene la equidad horizontal a lo largo del tiempo, al que se denomina mecanismo de las “Relatividades Constantes”. En este contexto, el trabajo examina críticamente el concepto de necesidades de gasto utilizado en la financiación autonómica española, propone una definición operativa del mismo, e identifica un índice global de necesidades que replica la distribución de recursos normativos del nuevo modelo de financiación. Utilizando este índice global, el artículo ilustra empíricamente el mecanismo de actualización propuesto y compara los resultados con los obtenidos a partir de la regla existent…
Genome rearrangement distances and gene order phylogeny in gamma-Proteobacteria.
2005
Genome rearrangements have been studied in 30 gamma-proteobacterial complete genomes by comparing the order of a reduced set of genes on the chromosome. This set included those genes fulfilling several characteristics, the main ones being that an ortholog was present in every genome and that none of them had been acquired by horizontal gene transfer. Genome rearrangement distances were estimated based on either the number of breakpoints or the minimal number of inversions separating two genomes. Breakpoint and inversion distances were highly correlated, indicating that inversions were the main type of rearrangement event in gamma-Proteobacteria. In general, the progressive increase in seque…
Segregación por género y Formación Profesional : aportaciones al debate sobre la situación actual
2020
En el presente texto se presenta un estudio sociológico que revisa la situación actual de la segregación de género en la Formación Profesional. Ésta es una etapa educativa con un marcado sesgo de género que se observa en el hecho que, de las 26 Familias Profesionales existentes, hay 15 claramente masculinizadas mientras que el alumnado es mayoritariamente femenino en cinco, lo que refleja la desigualdad existente también en los entornos profesionales a los que estos estudios conducen. A partir del análisis de fuentes secundarias, se observa cómo, en general, el peso porcentual de las alumnas desciende en todos los niveles de FP, aunque en los últimos cursos su peso se mantiene prácticamente…
The use of constructed wetlands for the treatment of agro-industrial wastewater – A case study in a dairy-cattle farm in Sicily (Italy)
2017
Wastewaters generated by agro-industrial operations often represent an unsustainable cost for farms due to high wastewater-treatment management costs. The wastewater produced by dairies, wineries or oil mills may vary in quantity and in quality depending on the time of the year, making the use of a conventional treatment system less efficient and more costly. Constructed wetland systems (CWs) provide low-cost technology and an efficient solution in the treatment of a number of wastewaters from agriculture. They are simple to build, have low maintenance costs and are sustainable compared to conventional treatment methods. This paper shows a case study that was carried out on a dairy-cattle f…