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.

Eukaryotic type II chaperonin CCT interacts with actin through specific subunits.

Abstract: Chaperonins assist the folding of other proteins1. Type II chaperonins, such as chaperonin containing TCP–1(CCT), are found in archaea and in the eukaryotic cytosol2. They are hexadecameric or nonadecameric oligomers composed of one to eight different polypeptides. Whereas type I chaperonins like GroEL are promiscuous, assisting in the folding of many other proteins1, only a small number of proteins, mainly actin and tubulin, have been described as natural substrates of CCT. This specificity may be related to the divergence of the eight CCT subunits3. Here we have obtained a three-dimensional reconstruction of the complex between CCT and α-actin by cryo-electron microscopy and image processing. This shows that α-actin interacts with the apical domains of either of two CCT subunits. Immunolabelling of CCT–substrate complexes with antibodies against two specific CCT subunits showed that actin binds to CCT using two specific and distinct interactions: the small domain of actin binds to CCTδ and the large domain to CCTβ or CCTe (both in position 1,4 with respect to δ). These results indicate that the binding of actin to CCT is both subunit-specific and geometry-dependent. Thus, the substrate recognition mechanism of eukaryotic CCT may differ from that of prokaryotic GroEL.

Photobioreactors for the production of microalgae

Abstract: Microalgae are produced today for human and animal markets, as food-feed and source of active compounds. Microalgae can be also used in wastewater treatment and they has been proposed as biofuels source to reduce global warming problem. Whatever the final application of microalgae its production is based on the same principles as light availability, enough mass and heat transfer and adequate control of culture parameters. In this paper these principals are revised. Moreover, the production must be carried out at adequate scale using photobioreactors. Design of photobioreactor is determined by the final use of biomass and quality required. Different designs today used are revised, including last designs proposed, identifying his characteristics parameters and applications. In addition, the obligation of adequate control strategies is discussed. Finally, the bottlenecks for the scale-up of the different technologies and thus of microalgae production are summarized.

A mathematical model of microalgal growth in light-limited chemostat culture

Abstract: A mathematical model for light-limited growth of a continuous microalgal culture is proposed. Average light intensity inside the photobioreactor was calculated, taking light attenuation by algae into account. The biomass absorption coefficient was determined by means of two new parameters, the pigment-free biomass, Y B , and the total pigment absorption, Y p (absorption coefficient normalized to total pigment content). The model reproduced the steady states reached and the dynamic behavior of the system when the dilution rate was changed

The Málaga urban dataset: High-rate stereo and LiDAR in a realistic urban scenario

Abstract: This paper introduces a dataset gathered entirely in urban scenarios with a car equipped with one stereo camera and five laser scanners, among other sensors. One distinctive feature of the present dataset is the existence of high-resolution stereo images grabbed at a high rate (20 fps) during a 36.8 km trajectory, which allows the benchmarking of a variety of computer vision techniques. We describe the sensors employed and highlight some applications which could be benchmarked using the present work. Both plain text and binary files are provided, as well as open-source tools for working with the binary versions. The dataset is available for download at http://www.mrpt.org/MalagaUrbanDataset.