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INFORMANDOTE-MAS: Síntomas de Enfermedad del sueño.. Figures 1 6A-1 6D illustrate the arrangements of the first and second magnets in accordance with four different embodiments of the invention. That is, the second generator module is biased or subjected to forces acting in two opposite directions, such as upwards and downwards, by different means or devices. For example, in the case of a pole-shaped first part that does not have a system for adapting the resonance frequency, when the wind speeds are too low the pole does not oscillate. Figures 1 3A-1 3D show, schematically, the geometric method used for determining the distance from the ground at which an extension of the pole does not suffer horizontal displacement for small bending angles. This flexible part 12 may be a type of flexible rod which can be elastically deformed sideways, in an oscillatory manner, allowing the rigid part to oscillate as well. That is, basically, when arranging the magnets in this manner, for example, following the Halbach array layout, that is, arranging the magnets in this way known to augment the magnetic field on one side of the array while cancelling the field to near zero on the other side, the magnetic field will be strongest on the side where the first and second magnets face each other, and thereby provide for an efficient use of the magnets.

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For example, the connecting members can be made of materials with high mechanical quality factor and high fatigue resistance, such as carbon fibre, titanium, steel, etc. In some embodiments of the invention, the second generator module is biased in a first direction by first biasing means, such as by first biasing means comprising magnets and/or springs, the first direction being parallel with the longitudinal axis of the first part. This double biasing, that is, the fact that the second generator module is subjected to forces in opposite directions, means that the second generator module can be floating in relation to a position of equilibrium of the biasing forces, and can be caused to oscillate in relation to said position of equilibrium by the oscillating movement of the first part.

Figure 9 illustrates, schematically, a cross section in the vertical plane of the two sets of magnets of figures 7 and 8 and a coil with respect to which said sets can move. For example, WO-2012/017106-A1 describes an electrical power generator driven by wind with a pole made up of a plurality of elements with high electromechanical coupling, a term which encompasses piezoelectric elements. The upper end of the pole is preferably closed, for example, by a cap. Figures 1 0A and 1 0B illustrate two simplified models of the behaviour of a pole without any tuning system (figure 10A) and with a tuning system (figure 1 0B), respectively.

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Figures 7, 8 and 9 show, schematically, how in some embodiments of the invention, the magnets mounted on the support 13 discussed above can be arranged, at every level, in the shape of a plurality of concentric rings 30, 31 and 32. Figure 9 is a vertical cross section view of the two sets of magnets illustrated in figures 7 and 8, one arranged above the other and separated by a gap in which the coils 50 can fit. Thus, a passive adaptation or passive control of the resonance frequency of the first part as a function of wind speed is achieved, which can serve as an alternative or complement to active adaptation, such as the one based on the application of a voltage to a piezoelectric material described in WO-2014/135551 -A1. Dolor de espalda baja y riñones . On the other hand, WO-2012/017106-A1 proposes active modulation of the apparent Young’s modulus or apparent elasticity modulus of the pole, by varying the electrical voltages to which the elements with high electromechanical coupling are subjected.

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This rigid part may include internal reinforcing elements 1 1 a such as ribs, brackets or beams that provide structural rigidity. This induces a displacement of the second generator module, and the opposing biasing forces described above contribute to a continued oscillation of the second generator module around a point or level of equilibrium. Figure 4 shows, schematically, how the magnets 30 are mounted on a support structure 13 mounted on the flexible part 12 and how the coils 50 are mounted on the static structure 2 itself (see also figure 5). It would also be possible to mount the coils 50 on the pole, but from the practical point of view it may be preferable to mount them on the fixed portion to facilitate the connection to the external network to which the generated power is intended to be transmitted, thereby reducing the risk of fatigue rupture of the conductors evacuating the energy and avoiding unnecessary viscous losses.

If the wind speed continues to increase, the amplitude begins to decrease, since the vortices start to be generated too quickly, whilst the natural oscillation frequency of the structure remains constant. In this way, the very structure of the generator of figures 1 and 4, with its magnets 30 and 40, contributes to an automatic increase in the resonance frequency of the pole when the wind speed increases and vice versa. Many changes of polarity/direction may be preferable to increase the production of electricity from a swaying movement of the first part. In some embodiments of the invention, the coils are arranged on the second part and the subsystem of magnets is arranged on the first part. Also, as the velocity of the oscillator movement in terms of velocity of displacement of the first part is at its maximum when reaching the neutral or center position, arranging for triggering to take place at this moment enhances the impulse-like character of the triggering and transfer of energy and momentum.

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As the repulsion force between the two magnets is inversely proportional to the square of the distance between the magnets, the force will vary substantially during the oscillation of the first part and its maximum value may depend significantly on the amplitude of the oscillatory movement. The terms “displacing” and “displaced” refer to the point of view that the oscillation of the first part, that is, of the pole or similar, is the origin of the movement of the second generator module, so that the magnets associated to the first part induce the movement of the second generator module due to their interaction with magnets associated to, such as placed or otherwise attached to, the second generator module. It has been found that even very small equipment can work properly, since they are able to adapt quickly to the changes in the wind (turbulence) given their rapid oscillation frequency.

The frequency of appearance of vortices depends on wind speed. In some embodiments of the invention, the second generator module is attached to the first generator module by means of flexible connecting members such as bars or rods of metal (such as titanium or steel), carbon fibre, or similar, selected and arranged to allow for displacement of the second generator module in an axial direction, for example, by bending of the connecting members, but preventing the second generator module from touching the first generator module. Figure 1 1 represents the evolution against displacement (x) of the spring force (Fk) and of the magnetic repulsion force (Fb). In both rings, the magnets are arranged following the so-called Halbach array in the vertical direction, that is, with the polarities alternating so that the magnetic field generated by the magnets is stronger on the side where the two rings of magnets are facing each other, than on the other side.

That is, and differently from prior art arrangements such as those suggested by US-2005/0230973-A1 where the relative movement between magnet and coil basically corresponds to the sideway oscillation of the element that is subjected to vibration due to the vortices, some embodiments the present invention involve a movement substantially in parallel with the longitudinal axis of the first part, that is, in the case of a vertically oriented first part, a movement in the vertical direction. The rigid top part has a characteristic dimension (the diameter in the case of a circular cross section) that varies depending on a height “Y” on the attachment point of the flexible bottom part to the base. However, a substantial part of the flexible part 12 is free and able to oscillate, together with the rigid part 1 1 towards one side and the other, owing to the aforementioned lift force.

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In some embodiments of the invention, the displacing magnets are arranged around and at a distance from the longitudinal axis of the first part, so as to interact with corresponding ones of the displaced magnets during oscillation of the first part, thereby repetitively transferring momentum from the first part to the second generator module. In some embodiments of the invention, the second annular frame member includes a plurality of through holes, the connecting members passing through respective ones of these through holes, whereby the through holes have an extension in parallel with the longitudinal axis of the first part sufficient to allow a relative movement between the connecting members and the second annular frame member in parallel with the longitudinal axis of the first part, when the second generator module is moving or oscillating in parallel with the longitudinal axis of the first part.

The second generator module can be suspended in a floating manner by magnets or springs biasing the second generator module upwards, and optionally also by magnets or springs biasing the second generator module downwards. In some embodiments of the invention, said at least one first magnet comprises at least two diametrically opposed parts and said at least one second magnet comprises at least two diametrically opposite parts, facing said at least two diametrically opposed parts of said at least one first magnet. Dolor abdominal con dolor de espalda . In some embodiments of the invention, said at least one first magnet is configured as at least one ring, for example, as several rings at different heights and/or said at least one second magnet is configured as at least one ring, for example, as several rings at different heights. In some embodiments of the invention, the second generator module is arranged to be triggered by the first part during said oscillating movement of the first part every time the first part returns to a center or neutral position during said oscillating movement, for example, everytime the first part aligns with the vertical axis.

  • Rosenzweig, M., Leiman, A. y Breedlove (2005). Psicología Biológica. España: Ariel
  • Compresas frías y calientes
  • Neuritis óptica
  • Irritantes (especialmente humo de cigarrillo)

Therefore, in order to maximise the energy capture of the pole, it may be desirable for the vortices to appear in a synchronised manner along the pole 1. In other words, the repulsion force modifies the behaviour of the first part as if the Young’s modulus or elasticity modulus of the first part were variable. Figure 6 shows an alternative configuration in which, at every level of coils – there are three levels of coils 50 in figure 4 – the coils are arranged in two concentric rings. These coils 50 can be provided with ferromagnetic cores 51.