Abstract: The present invention relates to a solar cell and to a method of manufacturing thereof, the solar cell comprising: a layer of an n-doped semiconductor, a layer of a p-doped semiconductor and an intermediate band layer being disposed between the n-doped and the p-doped semiconductor layers, the intermediate band layer comprising: an amorphous semiconducting host material, a plurality of colloidal quantum dots embedded in the host material and substantially uniformly distributed therein, each quantum dot comprising a core surrounded by a shell, the shell comprising a material having a higher bandgap than that of the host material, and a plurality of metal nanoparticles embedded in the host material and located at least in a plane where a plurality of quantum dots are distributed.

Abstract: This invention describes a method, the starting point of which is a three-dimensional image of the heart. A region of interest is defined on said image. Moreover, the surface which will be represented in the display in the form of a three-dimensional polygon mesh is defined. Each vertex of the mesh is associated with a function which assigns weights to each element in the region of interest. Display parameters are assigned to the vertices using said functions together with the intensity values of the elements in the region of interest. Said parameters are used to generate the interactive display of the surface. One application of the method would be the use thereof to help to characterize the myocardial substrate of ventricular tachycardia in patients with ischemic heart disease and to guide ablation procedures for correcting said tachycardia.

Abstract: A filtering system for water and other liquids includes different filtering stages in the same element, with its cleaning being done automatically by a new procedure. The filtering system includes a cylindrical outer casing with the pipe of the water to be filtered penetrating tangentially through its base, using centrifugal force in the first filtering stage to separate the particles with greater density. Then the liquid takes a helicoidal path and passes through different filtering devices, such as mesh or rings with the filtered and, therefore, clean water finally being collected in an appropriately perforated central pipe that comes out of the filter through the center of its lower base. The system is used for the cleaning of liquids, basically water, in agriculture for localized irrigation, in industry, or the environment.

Abstract: An enclosure is made out of transparent or translucent panes which form a chamber (1) through which a liquid flows in closed circuit and which interchanges energy with the inner and outer environments, a heat exchanger (2) in contact with the liquid, a circulation pump (3), and a hydrostatic pressure reducer device (4). The hydrostatic pressure reducer device allows the reduction of the thicknesses of the transparent panes which hold the liquid inside. The active character of the enclosure is due to its capacity of controlling the solar heat load and the illumination. The solar heat load is regulated through the heat exchanger. The illumination of the building is controlled through the adjustable transparency of the liquid. The described enclosure allows the creation of an isothermal envelope which allows the climatization of the building. The system can be used for active outer enclosures or for interior partitions for the climatization and luminic control, as well as for glass roofs or false ceilings.

Abstract: The invention refers to systems and methods to optimize the memory and communications that suits the memory organization of many scientific codes, such as Computer Fluid Dynamics codes, that operate on meshes, such the mesh of an object that moves through a fluid medium. The methods adjust the order in which the data are used inside the algorithm, by means of traversing and ordering the mesh. This ordered mesh is streamed into the lower memory levels and allows for minimal data transfer requirements. The method also reduces the memory needs dramatically and improves the execution time of the scientific code. The systems and methods are particularly useful in the aeronautic industry for designing new aircrafts.

Abstract: A novel document security and authentication system is based on a transparent element on which more than one image appears depending on the manner in which the element is viewed. The system is based on cells or sheets of liquid crystal doped with one or more dichroic dyes. The images obtained with the aid of a polarizer can be printed onto a very thin (?m or 10 tens of a ?m) sheet of polymer material; the images may also be in greyscale or in color. There is no need to apply electrical signals during the production or use thereof.

Abstract: A method carried out by a controller is disclosed. The method includes receiving (s10) a message including a request token. A request token is a value used by a consumer (300) to request authorization from a user to access protected resources from a service provider (400). A service provider (400) is at least one of a software application and web site that is configured to provide access to protected resources. A consumer {300} is at least one of a software application and a web site that is configured to access a service provider (400) on behalf of a user. The method further includes determining (s20) whether the message meets policy settings governing the access to protected resources; and, if it is determined (s30) that the message does not meet the policy settings, preventing (s34) the request token from being forwarded to the service provider (400) associated with the request token.

Abstract: A system allows conventional, unprepared fixed-wing aircraft to land safely on very small, unprepared areas, enabling an aerodynamic capacitance in which the airplanes can fly in a controlled manner against coherent air current, being assisted by a combined system including both the air current control mechanisms and the automatic flight control system of the aircraft.

Abstract: The present invention relates to a method and device for predicting the instability of an axial compressor, which is applicable to the aerospace and industrial field, specifically to the field of one- or multi-stage axial compressors. The invention relates to a method and a device for predicting the instability of an axial compressor which allows protecting said compressor from the instabilities of devices of this type. The present invention could be used in all those products requiring the use of said compressors, such as aircraft engines, turbofans, turboshafts, or turboprops in the aerospace field, gas turbines in the energy field, air conditioning systems in the civil field, and gas compression systems in the chemical or oil industry.

Abstract: The present invention relates to a filter pack formed by stacking rings, being used as a final element in multistage or single-stage filters. The filtration process is performed by consecutively separating the particles in suspension according to the thickness thereof in different areas.

Abstract: The present invention allows increasing the net electric power supplied to the network by the solar thermal power plants of the cylindrical parabolic collector type by using the solar field in a more efficient manner, generating steam to drive the main ancillaries by means of steam turbines (turbo pumps), reducing electric consumption of the ancillary services and therefore increasing the net electric power of the plant. On days when the solar radiation is greater than the designed radiation, part of the solar field must stop being used since the generator and the turbine would exceed its designated power. The present system proposes harnessing the unused portion of the solar field for generating steam to drive the main ancillaries of the plant, energy which would otherwise not be harnessed. In addition, the overall operating performance of the ancillary service pumps is better when using steam to drive the pumps through a steam turbine (turbo pumps) instead of driving them with electric motors (motor pumps).

Abstract: A system includes mobile solar panels for construction, which makes use of the edges of a building in order to position thereon the axes of rotation (4) of the solar panels for the roof (3, 5) or facade (10, 12, 13, 15), regardless of whether the panels are photovoltaic, thermal or hybrid panels, so that they can always be oriented towards the sun independently of the orientation of the building (1) and/or the roof thereof, whereby the panels can have a rectangular, triangular or polyhedral shape. The panels can rotate alternately about one or more axes, as well as the possibility of two contiguous panels being joined along the axis thereof (4) so that they can optionally rotate about the axis. In one embodiment, the back surface of the panels can be ventilated in order to increase the efficiency of the solar collection system and the ventilation of possible voids in the building.

Abstract: A continuous query parallel engine on data streams provides scalability and increases the throughput by the addition of new nodes. The parallel processing can be applied to data stream processing and complex events processing. The continuous query parallel engine receives the query to be deployed and splits the original query into subqueries, obtaining at least one subquery; each subquery is executed in at least in one node. Tuples produced by each operator of each subquery are labeled with timestamps. A load balancer is interposed at the output of each node that executes each one of the instances of the source subquery and an input merger is interposed in each node that executes each one of the instances of a destination subquery. After checks are performed, further load balancers or input managers may be added.

Abstract: Thermal solar energy collector, in which a solar radiation absorption panel, inside which the heat-conducting fluid flows, is situated inside a parallelepipedal box, with an opening having a transparent cover at the front, which may be doubled so as to leave an atmospheric space in the middle. The rear wall of the box has a system of seals and reservoirs which are inset in the wall so that they accommodate the expansion and contraction of vertical tubes of the panel and horizontal connections by means of gentle changes in curvature of the tube bends and slight rotations of the reservoirs, with the addition of a system for filling the box with an inert gas, the pressure of which may be chosen from a range of between a thousandth of an atmosphere and one atmosphere, there being provided for this purpose an external gas circuit, with low- and high-pressure tanks, an intermediate compressor.

Abstract: The invention relates to a rapid deexcitation system for synchronous machines (1) with indirect excitation by means of an excitation machine (2) and rotating rectifier bridge (8) comprising: a deexcitation impedance (10) connected between the field winding (5) of the synchronous machine (1) and the rotating rectifier bridge (8); a controller (9) connected in parallel with the deexcitation impedance (10); a control circuit (11) of the controller (9) configured to: keep the controller (9) closed such that the rotating rectifier bridge (8) directly feeds the field winding (5) of the synchronous machine (1) during normal operation of the synchronous machine (1); open the controller (9) such that the deexcitation impedance (10) remains in series with the field winding (5) and with the rotating rectifier bridge (8) when the synchronous machine is to be deexcited.

Abstract: A computer-aided method suitable for assisting in the design of an aircraft by providing the values of dimensional variables, dependant of a predefined set of parameters, for the complete aircraft or an aircraft component, comprising the following steps: a) Defining a parametric space grid; b) Obtaining a suitable Reduced Order Model (ROM) model, particularly a Proper Orthogonal Decomposition (POD) model, for calculating said variables for whatever point over the parametric space through an iterative process. Computer Fluid Dynamics (CFD) is used to calculate said variables for an appropriately selected set of points over the parametric space, which are used to approximate, via ROM and ad hoc interpolation, the variables in any other point over the parametric space. The method minimizes the required number of CFD calculations (to minimize the computational cost, which dramatically depends on this number) for a given level of error.

Abstract: A computer-aided method suitable for assisting in the design of an aircraft by providing the dimensioning aerodynamic forces and other relevant values comprising the following steps: a) Selecting a set of parameters of the aircraft, being said aerodynamic forces and other relevant values dependant of said parameters; b) Performing flow field CFD RANS computations for a number N1 of different combination of values of said parameters; c) Obtaining said aerodynamic forces and other relevant values for whatever combination of values of said parameters through a reduced-order model, generated by computing the POD modes of the flow variables, expanding the flow variables using said POD modes and obtaining the POD coefficients of said expanded flow variables using a genetic algorithm that minimizes the error associated to the expansion of the Navier-Stokes equations. The invention also refers to a system for carrying out said method.

Abstract: Underwater electrical energy generator with a three-blade propeller for the harnessing of energy from the water in the direction of its axis, in both directions. The propeller drives an alternating current generator located in a central dome from which there extend three arms joined to floats which close the Y-shaped structure by means of tie beams. The assembly has neutral floatability and is set into position by means of an anchoring system with a set of buoys joined to the bottom by one or more cables. An end of the generator is joined to an anchoring line by means of a horizontal cable in one of the main directions of the current. From the other end another two horizontal cables, open at an angle with respect to the direction of the current, are joined to another two anchoring lines. The assembly can be ballasted to go from an operating vertical underwater position to a horizontal floating position to facilitate maintenance tasks.

Abstract: Method for manufacturing of optoelectronic devices based on thin-film, intermediate band materials, characterized in that it comprises, at least, the following steps: a first stage wherein a substrate (1) is coated with a metal layer acting as electrode (2); a second stage, whereby atop the metal layer (2) a p-type semiconductor (3) is deposited; and a third stage, whereby the intermediate band material is processed; and wherein such an intermediate band material comprises nanoscopic structures (4) of multinary material of the type (Cu,Ag)(Al,Ga,In)(S,Se,Te)2 embedded in a matrix (5) of a similar composition, except for the absence of, at least, one cationic species present in the nanostructure.

Abstract: This invention describe a process for obtaining thin films of intermediate band semiconductor materials consisting of obtaining a target of compressed particles of the said material for its use in sputtering equipment. The target is obtained by means of the thermal process of a mixture of semiconductor material components, following a specific profile of temperatures and times, in order to obtain a material in a polycrystalline form of the same composition as the intermediate band semiconductor material. The polycrystalline material is disintegrated again by means of mechanical processes in the form of a powder and is then compacted, through the application of a suitable pressure in order to form a target.