Abstract: The subject of the invention is a multilayer photovoltaic panel with increased solar radiation energy to electric energy conversion surface which is characterised in that it comprises a lattice subassembly (1, 16, 23, 34, or 39) or at least one the chamber subassembly (44, 49, 54?, or 60?), in which the component photovoltaic modules (6 and 7) or (18 and 20) or (24 and 30) or (35) or (40) or (45) or (50) or (54) or (60) are connected inseparably with a photovoltaic layer (3) or (11) of the perforated support plate (2) or (17), whereas the perforated support plate (2) constitutes a plate-shaped stiffening element (14) with a single photovoltaic layer (3) or the perforated support plate (17) constitutes a plate-shaped stiffening element (14) both of the two surfaces of which are provided with photovoltaic layers (11).

Abstract: A laser cutting head includes a body, a laser light source located at a first end of the body, a nozzle located at another end of the body, an optical system located inside the body between the laser light source and the nozzle. The body includes at least two parts, which are slidable relative to each other in such a way that, due to their reciprocal displacement, the mutual position of the laser light source and/or the nozzle and/or the optical system can be changed, so that the geometry of the laser beam inside the body can be changed during use to achieve the desired parameters of the focus of the laser beam on the surface of the workpiece.

Abstract: A bumper for vehicles mounted to the front or to the rear of a vehicle comprising a bumper beam made of a plastic which is characterised in that the bumper beam (2) together with a shield (3) of a lamp (4) constitutes a single monolith made of a plastic with translucency from 10% to 100%.

Abstract: The structural node of tight separable joint of bottle neck with its threaded screwed cap made of plastic includes a cylindrical neck (1) of bottle (2) and a screw cap (3) screwed onto outer thread (4) of the neck, the cap being provided with an inner thread (5) and an inner sleeve (8) joined inseparably with bottom (6) of the cap, whereas outer surface of the sleeve has at least one annular sealing tongue (11 or 13) end of which fits tight to cylindrical surface (12) of the neck (1) or end of the at least one annular tongue (11 or 13) is set tightly in eat least one circumferential groove (14 or 15) provided on inner cylindrical surface (12) of the neck (1). Moreover the cap (3), on inner surface of its sleeve portion (10), has annular offsets (17) situated above its thread (5) ends of which are tightly set in circumferential grooves (18) provided on outer surface of the neck (1) above its outer thread (4) and opposite said offset ends.

Abstract: A charcoal article for use of a hookah tobacco pipe is provided. The article comprises a body extending between a top and bottom portions. Plurality of legs extends outwardly from a base surface disposed between the top and bottom portions. The legs are separated from each other by channels, and a recess is provided extending inwardly within the body from the base surface. An inner chamber is defined within the body by the walls of the legs and walls of the recess. The legs are configured for placement on a foil, having at least one perforation, covering a bowl with a smoking matter. Upon positioning of the article on the foil the heating chamber is positioned to coincide with or situated at the perforation within the foil.

Abstract: A seal comprises a lid that is rotary-mounted to a filter container base and has a body with at least two stub pipes and an internal part attached to the body in which are formed circulation ducts positioned as an extension of the stub pipes in opened position, and at least one bypass duct connecting the stub pipes in closed position. The internal part is attached to the body using a rotary bayonet mount by rotating to closed position in which the stub pipes are connected by the bypass duct, and the body together with the attached internal part are attached to the base using a rotate-and-lock bayonet mount. In closed position the internal part is attached to the base in a stationary manner using a longitudinal head joint formed on the joined elements, and the changing to opened position occurs by rotating the body in the rotate-and-lock bayonet mount.

Abstract: A charcoal article for use of a hookah tobacco pipe is provided. The article comprises a body extending between a top and bottom portions. Plurality of legs extends outwardly from a base surface disposed between the top and bottom portions. The legs are separated from each other by channels, and a recess is provided extending inwardly within the body from the base surface. An inner chamber is defined within the body by the walls of the legs and walls of the recess. The legs are configured for placement on a foil, having at least one perforation, covering a bowl with a smoking matter. Upon positioning of the article on the foil the heating chamber is positioned to coincide with or situated at the perforation within the foil.

Abstract: A biocompatible coating for solid phase microextraction (SPME) of a small molecule from a biological matrix. The coating comprises SPME particles and a biocompatible polymer. The biocompatible polymer (e.g. polyacrylonitrile) reduces adsorption of proteins or macromolecules onto the SPME particles and allows the SPME particles to extract the small molecule from the matrix. A process for coating a flexible fiber with a biocompatible coating. The process comprises: coating the fiber with a suspension of SPME particles, the SPME particles being suspended in a solution of a biocompatible polymer and a solvent, the biocompatible polymer can comprise polyacrylonitrile (PAN); drying the coated fiber to remove the solvent; and curing the dried coated fiber at an elevated temperature.

Abstract: A control system includes preprocessing circuitry which converts sensed input signals to a plurality of names. A processing unit which is controlled by a fixed, prestored, program combines the input names with prestored control words from an application logic table to produce output names which are indicative of a control action for the purpose of controlling the process. Postprocessing circuitry converts the output names to signals for controlling the process.

Abstract: An hydraulic propulsion system for watercraft involving the forming of a parallel-sided, open-ended inlet intake tunnel with a recessed intake screen at the rear of the craft, which tunnel directs the incoming water flow into a single or multi-stage cylindrical axial pump having multi-vaned matched impellers and straighteners for driving the flow into an unobstructed acceleration chamber which converges the flow according to the rule of minimal flow losses, and discharges it as a jet through a cylindrical opening with controls thereat to propel and steer the craft. The intake tunnel and the acceleration chamber may be formed of fiberglass, with the former being laminated or molded into the hull of the craft, and the overall system may be of simplified, light-weight, compact construction while producing at least 15% greater thrust than conventional propulsion systems, and much greater thrust than prior hydraulic jets, of comparable power, installed in the same craft.