Small hydropower plants for electricity generation were first built in Spain in the early 1880s. The Spanish peninsula is characterized by its rugged landscape, fast flowing rivers and steep gradients. A clear example...Small hydropower plants for electricity generation were first built in Spain in the early 1880s. The Spanish peninsula is characterized by its rugged landscape, fast flowing rivers and steep gradients. A clear example of this is the remarkable area of the upper Ebro river basin where powerful water flows are found that are ideal for electricity generation. Between 1900 and 1930, the river Ebro was a major source of energy for industrial areas such as Alava, Vizcaya, Vitoria, Miranda de Ebro, Burgos and La Rioja. Between 1951-1965, the use of these small hydropower plants declined due to the construction of alternatives by industrialists in the Basque Country, which in most cases led to their deterioration. They were rescued in the late twentieth century, thanks to private sector initiatives which funded their rehabilitation. This study examines two small-scale hydraulic power plants in the province of Burgos at Medina de Pomar and at Quintanilla Escalada; both buildings were used for generating electricity and had living quarters for the workers and now represent historic architectonic and industrial heritage. The study documents their architectonic features and the restoration processes that have permitted one of them to remain in operation up until the present day.展开更多
The alternative productions, increasingly importance, are based on the rational utilization of the resources, on agreement with the environment and the use of autochthonous breeds that many cases are found in danger o...The alternative productions, increasingly importance, are based on the rational utilization of the resources, on agreement with the environment and the use of autochthonous breeds that many cases are found in danger of disappearance, due to the tact that their suckling is not economically profitable. A way of predicting and knowing the growth of the animals is using mathematical models. This work presented the results of the estimate of the growth according to the Gompertz-Laird model of males of the atttochthonous breed Serrana Soriana and Charolais. The weight to the birth of the breed calfs Charolais （45.14 kg）, was superior to those of Serrana Soriana （40.13 kg）, and presented a greater relative growth （9.9%） before the inflection point of the growth curve： furthermore it ~as also superior to the maximum decline relative after this point （6%）, Serrana Soriana reached 7 days after the maximum growth point but with a smaller weight （315.05 kg vs 384.76 kg）. It was calculated a weight to the maturity of 1 ,（176.91） kg for Charolais and 856.40 kg for Serrana Soriana.展开更多
The novelties in the representation of strongholds in Alentejo-southem Portugal, frontier with Spain, considered as a ＂theater of war＂ during the 17th and 18th centuries-followed European influences, which the theor...The novelties in the representation of strongholds in Alentejo-southem Portugal, frontier with Spain, considered as a ＂theater of war＂ during the 17th and 18th centuries-followed European influences, which the theorists responsible for training the engineers in active in the country at this time, Luis Serrao Pimentel and Manuel de Azevedo Fortes, intend to apply. Several drawings bring testimony to this, by showing different ways of representing natural or built elements, allowing for comparisons with other regions of the country or even Europe. The comparison with earlier projects, and given the information contained mainly in the works of Luis Serr^o Pimentel and Manuel de Azevedo Fortes, lead us not only to the conclusion of the acceptance of the proposed rules, in order to enrich the profile of military engineers in Portugal, but also to notice the changes that this acceptance signified, emphasizing especially the technical and artistic sensibility of the authors of these projects of military architecture.展开更多
The aim of this work is double. Firstly, we want to stress out that investing in renewable energies in 2009 in Spain was a profitable activity. This question will be answered studying the possibilities of expanding ＂...The aim of this work is double. Firstly, we want to stress out that investing in renewable energies in 2009 in Spain was a profitable activity. This question will be answered studying the possibilities of expanding ＂Sierra de Tineo＂ wind farm in the Principality of Asturias （location, wind resource, data analysis, simulation, legal standards and economic and sensitivity study of the investment）, and for that, data from the year 2009 have been used. And secondly, the goal is to set the bases for a future paper where the current situation of Spain （within the renewable framework）, will be compared with the 2009 scenario.展开更多
文摘Small hydropower plants for electricity generation were first built in Spain in the early 1880s. The Spanish peninsula is characterized by its rugged landscape, fast flowing rivers and steep gradients. A clear example of this is the remarkable area of the upper Ebro river basin where powerful water flows are found that are ideal for electricity generation. Between 1900 and 1930, the river Ebro was a major source of energy for industrial areas such as Alava, Vizcaya, Vitoria, Miranda de Ebro, Burgos and La Rioja. Between 1951-1965, the use of these small hydropower plants declined due to the construction of alternatives by industrialists in the Basque Country, which in most cases led to their deterioration. They were rescued in the late twentieth century, thanks to private sector initiatives which funded their rehabilitation. This study examines two small-scale hydraulic power plants in the province of Burgos at Medina de Pomar and at Quintanilla Escalada; both buildings were used for generating electricity and had living quarters for the workers and now represent historic architectonic and industrial heritage. The study documents their architectonic features and the restoration processes that have permitted one of them to remain in operation up until the present day.
文摘The alternative productions, increasingly importance, are based on the rational utilization of the resources, on agreement with the environment and the use of autochthonous breeds that many cases are found in danger of disappearance, due to the tact that their suckling is not economically profitable. A way of predicting and knowing the growth of the animals is using mathematical models. This work presented the results of the estimate of the growth according to the Gompertz-Laird model of males of the atttochthonous breed Serrana Soriana and Charolais. The weight to the birth of the breed calfs Charolais （45.14 kg）, was superior to those of Serrana Soriana （40.13 kg）, and presented a greater relative growth （9.9%） before the inflection point of the growth curve： furthermore it ~as also superior to the maximum decline relative after this point （6%）, Serrana Soriana reached 7 days after the maximum growth point but with a smaller weight （315.05 kg vs 384.76 kg）. It was calculated a weight to the maturity of 1 ,（176.91） kg for Charolais and 856.40 kg for Serrana Soriana.
文摘The novelties in the representation of strongholds in Alentejo-southem Portugal, frontier with Spain, considered as a ＂theater of war＂ during the 17th and 18th centuries-followed European influences, which the theorists responsible for training the engineers in active in the country at this time, Luis Serrao Pimentel and Manuel de Azevedo Fortes, intend to apply. Several drawings bring testimony to this, by showing different ways of representing natural or built elements, allowing for comparisons with other regions of the country or even Europe. The comparison with earlier projects, and given the information contained mainly in the works of Luis Serr^o Pimentel and Manuel de Azevedo Fortes, lead us not only to the conclusion of the acceptance of the proposed rules, in order to enrich the profile of military engineers in Portugal, but also to notice the changes that this acceptance signified, emphasizing especially the technical and artistic sensibility of the authors of these projects of military architecture.
文摘The aim of this work is double. Firstly, we want to stress out that investing in renewable energies in 2009 in Spain was a profitable activity. This question will be answered studying the possibilities of expanding ＂Sierra de Tineo＂ wind farm in the Principality of Asturias （location, wind resource, data analysis, simulation, legal standards and economic and sensitivity study of the investment）, and for that, data from the year 2009 have been used. And secondly, the goal is to set the bases for a future paper where the current situation of Spain （within the renewable framework）, will be compared with the 2009 scenario.
