摘要:
The solution deals with a system for attaching a measuring probe to an internal transplanted organ (7) to provide its monitoring. The measuring probe body (1) consists of a sensory part (1.1), which is to be placed onto the monitored organ (7), and which accommodates measuring sensors (2), and of an output part (1.2) leading out from a patient's body. The system for attaching the measuring probe body (1) to the monitored organ (7) is formed by at least two grips (3.1, 3.2) in a form of strips made of a soft and elastic biocompatible material. The first ends of the grips (3.1, 3.2) are fixed from one side to the sensory part (1.1) of the measuring probe body (1), where solenoid coils (4.1, 4.2) are located, their number corresponds to the number of the grips (3.1, 3.2). Power supply conductors (5.1, 5.2) of these coils are lead to a power supply source through the output part (1.2) outside the measuring probe (1). The second ends of the grips (3.1, 3.2) are equipped with permanent magnets (6.1, 6.2), which are placed against the corresponding solenoid coils (4.1, 4.2). Due to the absence of mechanical elements, such as surgical sutures or fixing wire, the presented solution features simpler mechanical design, easier application, reduced risk of the infection introduction into the patient's body, and safer removal of the probe from the patient's body when compared with the current systems.
摘要:
The invention concerns a portable device that, even for a device of small dimensions, increases the amount of the recorded imagery data of a measured object in a fixed position in order to obtain spatially varying surface reflectance data, i.e. Bidirectional Texture Function data, and the multidirectional imaging of real objects with the use of a basic three-dimensional object (2) equipped with first illumination units (4) and/or exit apertures of a light guiding system (21) in combination with multiplication of optical elements contributing to the imaging on the acquisition system and/or second illumination units (9) and/or acquisition elements of the camera/detector type and/or third illumination units (12), by their placement on moveable arms (7, 8, 13) attached to the basic three-dimensional object (2). This principle is usable for small portable devices and allows for recording the visual appearance of surfaces on site without having to extract a sample from its environment.
摘要:
According to the new method of optimizing the concrete reinforcement arrangement and orientation in concrete, the load imposed on the building element to be manufactured with defined dimensions is calculated using common methods and based on this known load, the distribution of tensile stress in this building element is determined. The tensile stress distribution in the given building element is determined by creating a computer geometric model of this building element. The volume of the geometric model of the building element is then split by a spatial mesh system into small discrete volumes from the group of shapes cube, cuboid, pyramid. The shape of a discrete volume is selected based on the shape of the building element and the size is selected based on the requested fineness of the resulting spatial reinforcement mesh. Then, the magnitudes of tensile stresses and spatial vectors of their directions at individual discrete nodes of the mesh are determined. Based on data obtained as described above, are designed both the directions of reinforcements in individual discrete nodes given by the resulting direction of the tensile stress, and also the diameters of individual reinforcement bars corresponding to the magnitudes of these tensile stresses. The resulting spatial reinforcement mesh is modeled by means of a CAD software and printed out using the Direct Metal Laser Sintering 3D metal printing method. The produced spatial reinforcement mesh is inserted into the formwork, concrete is poured in, and when it hardens, the final building element is demoulded. The magnitudes of tensile stresses and their directions at the individual discrete nodes of the mesh are determined for example by the finite element method, the boundary element method, or the finite difference method.
摘要:
The source of non-thermal plasma with acoustically stabilized and magnetically homogenized electrical discharge is formed by a cylindrical discharge chamber (1) realized by an electrically conductive tube made of non-magnetic material, which forms one electrode of the discharge system connected by the grounding conductor (13) to the grounding potential. The other electrode is a wire electrode (2) formed by a conductor with circular cross-section made of non-magnetic material and it is located in the axis of the discharge chamber (1). Into this discharge chamber (1) are from both sides inserted electrically non-conductive extensions (5) and (6), which are attached to the acoustic sources (7) and (8). Around the discharge chamber (1) are slipped toroid permanent magnets (11) and (12). In the center of the discharge chamber (1) is placed the center of the wire electrode (2), which is connected outside the discharge chamber (1) via the ballast resistor (3) to the high voltage source (4). This wire electrode (2) comes out perpendicular from the plane of the acoustic pressure node in the axis of the cylindrical discharge chamber (1). The length of the wire electrode (2) conductor in the axis of the cylindrical discharge chamber (1) is greater than the length of the discharge chamber (1). Inlet (9) and outlet (10) of the processed gas are inserted via non-conductive extensions (5) and (6) at the opposite sides of the discharge chamber (1).
摘要:
Cement composite material with shredded textile waste, which has a voided structure, consists of the silicate cement, aggregate, shredded textile waste and water. The composite contains cement in a weight dosage 260 to 400 kg/m 3 and the aggregate of single unsorted fraction from the group (0-16, 0-22 or 0-32) in a weight dosage 1400 kg/m 3 to 2100kg/m 3 . The amount of the shredded textile waste is determined by the measured void ratio of the aggregate and it ranges from 10 to 80 kg/m 3 . Water coefficient ranges from 0.25 to 0.4 depending on the aggregate water content and on requirements for workability of the composite
摘要翻译:水泥复合材料具有破碎的纺织废料,其具有空隙结构,由硅酸盐水泥,骨料,粉碎的纺织废物和水组成。 该复合材料含有重量为260至400kg / m 3的水泥和来自组(0-16,0-22或0-32)的单一未分级级分的骨料,重量为1400kg / m 3至2100kg / m 3。 粉碎的纺织废料的量由所测量的聚集体的空隙率确定,范围为10至80kg / m 3。 水分系数范围为0.25至0.4,取决于总含水量和复合材料的可加工性要求
摘要:
Connection of transformer power source with wide input range solves those cases when the power supply voltage ranges between two distant limit values, while the required output voltage remains constant. The basis of the solution is a transformer (7) with windings switched between by the switches (5, 6). These switches (5, 6) are controlled by a processor (4), which always after resetting when one limit voltage turns off and the other limit voltage turns on finds out from the output of the voltage converter (3), which voltage is connected to the input of the power supply source, and accordingly it switches on the relevant switch (5, 6), thus selecting the corresponding primary winding of the transformer (7). On the secondary winding of the transformer (7) therefore always appears the voltage of the same value, which may be further processed by traditional rectifier and stabilizer. In this way, the connection allows to transform the alternating voltage with wide range of input voltages where the primary voltage value is determined even before it is brought to the transformer primary winding and only subsequently it is transformed to the required value.
摘要:
A detector (1) of ionizing radiation, e.g. x-ray radiation, allowing for the creation of a continuous digital image of a scanned object, particularly in flaw detection, in testing material, in biology, medicine, etc. The detection surface (2) is formed by a mosaic of semiconductor pixel hybrid detector segments (3 ) arranged in a matrix (10). Each detector segment (3) consists of a sensor layer (5) arranged on a chip reader (6) with the formation of tiers (7) to engage an adjacent detector segment (3). Known detectors (1) have sensor layers (5) with inactive edges, forming a so-called dead zone in the image. The essence of the invention consists in that the sensor layer (5) of the detector segment (3) is active over its entire area, and the matrix (10) is provided with a means for positioning the detector segments (3) to define their mutual lateral clearance to a value less than the size of one pixel of the sensor layer (5). The positioning means preferably comprises a moveable and fixable carrier (11) of rows (4). The resulting detection surface (2) is active over its entire area and allows for the direct creation of continuous digital image without dead zones.