Criticalities in the NZEB retrofit of scholastic buildings: analysis of a secondary school in Centre Italy

Abstract In Italy, the recast of the European Directive on Energy Performance of Buildings (2010/31/EU) is implemented with specific definitions and deadlines for Nearly Zero Energy Buildings. We focus our attention on schools, not only for their social importance and high visibility, but also because in the next future a significant share of these buildings is likely to undergo refurbishment for different purposes than the energetic one. We start to analyze the criticalities associated with the current Italian legislation on NZEBs by means of a bottom-up approach: we choose a benchmark secondary school (located in Pisa, hosting about 750 students) and perform an accurate energy audit of the building system, together with an energy and economic simulation of an NZEB retrofit. More in detail, we present the case study and explain its choice as an appropriate representative of the existing scholastic buildings in Centre Italy; besides, we build two concurrent energy models, based on tailored and asset rating methods, we propose technically-feasible actions for deep renovation, and simulate, for both models, the associated energy and economic savings after 20 years of use. We observe long payback periods of the retrofit measures, due to low yearly energy uses in the existing configuration. Based on these results, we attempt to extend to a more general level the considerations on strengths and weaknesses encountered in the present application of the Italian regulation on NZEBs

The Mineralogy, Paragenesis, and Alteration of the Camino Rojo Deposit, Zacatecas, Mexico

ABSTRACTThe Camino Rojo Zn-Pb-Ag-Au deposit, located in north-central Mexico, has characteristics of intermediate to low sulfidation epithermal deposits, skarns, and carbonate replacement deposits. Mineralization is hosted in sulfide-rich vein networks and manto-style replacements within calcareous, Cretaceous sedimentary rocks. U-Pb and fission track dating of zircon grains from a mineralized dike constrained the maximum age of the deposit to about 73Ma. Primary sulfides at the deposit include pyrite, sphalerite, arsenopyrite, galena, marcasite, chalcopyrite, electrum, acanthite, pyrargyrite, and tennantite-tetrahedrite. The deposit veins and manto replacement bodies are composed of massive-textured, intergranular sulfides and are concentrated in the carbonaceous siltstone and sandstone of the Caracol Formation. Disseminated sulfides commonly spread outward along bedding planes. Gangue mineralogy includes calcite and potassium feldspar, with lesser amounts of quartz, sericite, and fluorite. Two stages of mineralization were identified using optical petrography. Stage 1 mineralization consists of extensive pyrite-sphalerite-arsenopyrite-galena- chalcopyrite deposited as veins and mantos. Stage 2 mineralization was further divided into two parts: (2a) includes electrum± galena± chalcopyrite± acanthite filling fractures within stage 1 sulfides; and (2b) includes calcite, galena, pyrargyrite, acanthite, and argentiferous tennantite-tetrahedrite within veins which can cross-cut stage 1 mineralization. Over 80% of the electrum at the deposit formed during Stage 2a. Stage 2a and 2b have not been observed to be temporally or spatially associated. Three alteration events were recognized at Camino Rojo. First, early potassic metasomatism and decarbonization bleached and hardened the sedimentary host rocks through K-feldspar flooding of the host matrix. Second, an ore-stage calcite -sericite± pyrite ± quartz alteration overprinted the potassic metasomatism. The final alteration stage is characterized by late calcite dissemination and multiple generations of cross-cutting calcite veins and veinlets. Hornfels texture within the host rocks indicates proximity to a deeper intrusion. Skarn formed within the limestone units underlying the bulk of deposit mineralization. The Camino Rojo deposit is likely part of a larger porphyry system, and the veining and manto replacement which host mineralization may be a transition between distal skarn and the epithermal environment

Accidentes in ítínere y en misión: Implantación y desarrollo de campañas de sensibilización en la Comunidad Valenciana

Se realiza un estudio y análisis estadístico de los accidentes de tráfico laboral conocidos como accidentes in itínere y en misión, destacando las variables que más inciden en ellos, calculándose los índices de incidencia en función de la gravedad de los accidentes atendiendo a diversas variables significativas y tambien por sectores laborales, incluyéndose indicadores particulares para la accidentalidad en la Comunidad Valencia a nivel global y por provincias. Se analiza la opinión de los técnicos de prevención y de los trabajadores con respecto al riesgo vial y los procedimientos para actuar de forma preventiva a nivel empresarial, se analiza una encuesta cumplimentada por los trabajadores que han participado en las campañas, se indica el procedimiento y materiales a emplear para el desarrollo de campañas de divulgación en la prevención del riesgo vial como trípticos, cartelería y presentaciones describiéndose dos procedimientos para efectuar una evaluación del riesgo vial en función de las variables que afectan al factor humano, entorno y vehículo, uno mediante un modelo lineal en base a variables como el tamaño de la empresa, sexo del trabajador, edad, tiempo de permanencia en la empresa, ruta utilizada, tipo y edad del vehículo empleado en los desplazamientos y accidentalidad, también se recogen los percentiles de una serie de variables con alta incidencia en los accidentes de tráfico laborales que permiten clasificar o escalar a un trabajador por niveles de riesgo.We performed a statistical analysis and study of occupational accidents known as commuting accidents and in mission, highlighting the variables that affect them, calculating rates incidence depending on the severity of accidents account several significant variables and also by employment sectors, including individual indicators for the accident in at Valencia Community global and provinces. We analyze the technical opinion of the prevention and workers regarding the risk and road procedures to take preventive action at the enterprise level, we analyze a survey completed by workers who have participated in the campaigns, is the procedure and materials used for the development of awareness campaigns on road risk prevention as leaflets, posters and presentations describing two procedures for conducting a risk assessment based on the traffic variables affect the human factor, environment and vehicle, one by a linear model based on variables such as size of the company, worker's sex, age, time spent in the company, route used, type and age of vehicle used in the travel and accident, the percentiles are also collected a series of variables with high incidence of occupational accidents or scale for classifying a worker by levels of risk

Graadmeters aquatische natuur : analyse gegevenskwaliteit Limnodata

Onderzoek is uitgevoerd om een beeld te verkrijgen van de geschiktheid van gegevens in de Limnodata om een methode te ontwikkelen voor het waarderen van aquatische natuurkwaliteit en om bij te dragen aan de ontwikkeling van het standaardiseren van gegevensverzameling en kwaliteitscontrole aan de poort van de Limnodata. Hiertoe is een vergelijking uitgevoerd van de macrofaunagegevens die aanwezig zijn in de Limnodata Neerlandica met de oorspronkelijke bronbestanden voor macrofauna die aanwezig zijn bij de waterschappen (i.c. Hoogheemraadschap Hollands Noorderkwartier, Waterschap Velt & Vecht, Waterschap Regge & Dinkel en Wetterskip Fryslan). De vergelijking leverde grote verschillen op in locaties, monsters en monsterinhoud, zoals omschrijving, standaardisatie en bemonsteringsmethode. Het document geeft een nadere duiding van de aard van deze verschillen. De Limnodata bleek slechts 42% van de monsters van het Hoogheemraadschap Hollands Noorderkwartier, 34% van de monsters van Velt & Vecht, 43% van de monsters van Regge & Dinkel en 46% van de monsters van Wetterskip Fryslan correct te hebben overgenomen. In deze percentages zijn de ontbrekende locaties nog niet meegenomen. Omdat de onjuistheden geen patroon bezitten en de verschillen voldoende groot zijn, zullen ze de resultaten van vervolganalyses in belangrijke mate beïnvloeden. Daarom wordt het gebruik van de Limnodata niet aanbevolen voor doelen zoals Natuurverkeningen en andere toepassingen

Numerical aerodynamic simulation facility. Preliminary study extension

The production of an optimized design of key elements of the candidate facility was the primary objective of this report. This was accomplished by effort in the following tasks: (1) to further develop, optimize and describe the function description of the custom hardware; (2) to delineate trade off areas between performance, reliability, availability, serviceability, and programmability; (3) to develop metrics and models for validation of the candidate systems performance; (4) to conduct a functional simulation of the system design; (5) to perform a reliability analysis of the system design; and (6) to develop the software specifications to include a user level high level programming language, a correspondence between the programming language and instruction set and outline the operation system requirements

TRIP trajectory integration program

Computer program with predictor-corrector numerical integration subroutine for fast trajectory analysi

Annual reports of the town officers of Wilton, N.H. for the year ending December 31, 1994. Wilton Lyndeborough co-op & Wilton school district for the year ending June 30, 1994.

This is an annual report containing vital statistics for a town/city in the state of New Hampshire

Family planning regional data network

Issued as Implementation plan and schedule, Bimonthly progress summary [1-5], Network design, Preliminary assessment, and Final report, Project no. G-36-614Final report has title: System user's documentation for a family planning regional data networ