University of Almería

About: University of Almería is a education organization based out in Almería, Spain. It is known for research contribution in the topics: Population & Context (language use). The organization has 4674 authors who have published 10905 publications receiving 233036 citations. The organization is also known as: University of Almeria & Universidad de Almería.

Contribution of different natural yeasts to the aroma of two alcoholic beverages

Abstract: The aroma formation in the fermentation of two types of natural musts by 12 different yeasts has been analysed. In grape must fermentation Pichia fermentans Coleccion Espanola de Cultivos Tipo (CECT) 11773, Clavispora lusitaniae OJ6 and Pichia anomala OJ5 produced the best balance between concentrations of ethyl acetate and high alcohols. When orange juice was fermented with the 12 yeasts, Pichia fermentans CECT 11773, Rhodotorula mucilaginosa OJ2 and Hanseniaspora uvarum CECT 10885 produced a good beverage with low alcoholic grade. For both types of natural musts Pichia fermentans CECT 11773 increased the presence of higher alcohols and ethyl acetate. After using this strain both alcoholic beverages obtained the highest evaluation in the sensory analysis.

On the use of the digital elevation model to estimate the solar radiation in areas of complex topography

Abstract: The development of solar energy as a power source in the next few years requires reliable estimation of available solar energy resources. At local scales, topography is the most important factor in determining the distribution of solar radiation at the surface. Interpolation techniques are usually employed to estimate solar radiation where stations are not available, but their usefulness is limited where topography is an important source of variability. The use of satellite data and more recently of models based on techniques GIS, have contributed to solve this difficulty. In this work the usefulness of a digital elevation model (DEM) in providing topographic information for the estimation of solar radiation in areas of complex topography is analysed. Daily global radiation values were generated using the Solar Analyst software, which uses topographic information to generate radiation data. The generated data were compared with the experimental data obtained from 14 radiometric stations located within the Sierra Nevada Natural Park (southern Spain), an area of complex topography. Results show the usefulness of the topographic information derived from a DEM to estimate the solar radiation in areas of complex topography. Nevertheless, results depend on the DEM resolution and it is important that other factors, such as the albedo, should also be taken into account to obtain better estimates. Copyright © 2006 John Wiley & Sons, Ltd.

An overview of renewable energy potential in Palestine

Abstract: The energy sector situation in Palestine is highly different compared to other countries in the Middle East due to many reasons: non-availability of natural resources, unstable political conditions, financial crisis and high density population. Furthermore, Palestine depends on other countries for 100% of its fossil fuel imports and for 87% of its electricity imports. In addition high growth of population, increasing living standards and rapid growth of industrial have led to tremendous energy demand in Palestine in recent years. The total energy consumption per habitant in Palestine is the lowest in the region (0.79 MW h/inhabitant) and costs more than anywhere else in the Middle East countries. The primary goal of this paper is to analyze the current energy sector situation in Palestine and to highlight the status of the potential of renewable energy as an essential future energy source sector in Palestine. Regarding the main possibilities of RE, the wind speed averages (m/s) for main 5 cities were: Tubas 4.97, Salfeet 4.26, Ramallah 3.09, Hebron 2.90 and Jericho 1.32. With these data, Palestine can be considered as a country of moderate wind speeds. By the other hand, Palestine has a high solar energy potential about 3000 sunshine hours per year with a solar radiation (kW h/m2/day) for year 2013 of 8.27 in Ramallah, 7.51 in Hebron, 6.86 in Salfeet and 6.15 in Tubas. These values are encouraging to exploit the solar energy for different applications. This study highlights that the main renewable energy sources in Palestine are solar energy, wind energy and biomass, thereby the energy dependence on neighbouring countries may significantly decrease, when Palestine uses the available renewable energy sources. The renewable energies in Palestine open new perspectives for energy sector in order to prompt practices for sustainable development.