Abstract: The present invention relates to a tubular-shaped component (19) for an aeronautical fuselage made of composite materials comprising an outer skin (1) without joints having a cylindrical or cylindrical-conical shape, a plurality of stiffeners or stringers (2) longitudinally arranged in said outer skin (1) and a plurality of anchoring elements (3) for anchoring other elements to subsequently be incorporated transversally arranged between said stiffeners or stringers (2). The invention also comprises a jig (18) comprising a support body (12) and a plurality of panels (9) that can shift between an extended position (10) and a retracted position (10?) in both directions and a process for manufacturing said component (19) in the last step of which once the tubular component (19) is formed and cured, it is separated from the jig (18) by means of a longitudinal movement after the shifting of those elements of the jig (18) preventing it, and particularly the panels (9) that can be shifted.

Abstract: The present invention provides a closed composite material structure for aircraft fuselage shaped on a male jig from which it can be separated in a certain direction, said structure comprising a single outer panel and a plurality of inner longitudinal stiffeners integrated in said panel, such that the expansion coefficient of the male jig is greater than the expansion coefficient of the composite material of the structure, thus being able to remove the already manufactured structure, formed by the panel and the integrated inner stiffeners, in a single operation. The present invention further provides a process for manufacturing such a closed structure.

Abstract: A process for manufacturing stiffened structures (11) in composite materials formed by an outer coating (13) and a plurality of stiffeners (15) the cross-section of which has a closed form delimiting an inner opening (23), comprising the following steps: a) Providing a shaping tool (31); b) Providing auxiliary male tools (37) with an inert material inside them coated with membranes suitable for curing c) Providing stiffeners (15) in fresh or cured condition; d) Arranging the stiffeners (15) in the tool (31) and the auxiliary male tools (37) in their inner openings (23); e) Laminating the outer coating (13); f) Curing the stiffened structure (11) with high temperature and pressure; g) Removing the auxiliary male tools (37) after reducing their volume by withdrawing the inert material thereof; h) Separating the cured stiffened structure (11) from the tool (31). The invention also relates to the auxiliary male tools.

Abstract: A process for manufacturing stiffened structures (11) in composite materials formed by an outer skin (13) and a plurality of stiffeners or stringers (15) the cross-section of which has a closed form delimiting an inner opening (23), comprising the following steps: a) Providing a shaping tool (31); b) Providing auxiliary male tools (37) of a material capable of varying its volume due to the effect of temperature and/or pressure, covered with membranes suitable for curing c) Providing stiffeners or stringers (15); d) Arranging the stiffeners or stringers (15) in the tool (31) and the auxiliary male tools (37) in their inner openings (23); e) Laminating the outer skin (13); f) Curing the stiffened structure (11) with high temperature and pressure; g) Removing the auxiliary male tools (37) after reducing their volume; h) Separating the cured stiffened structure (11) from the tool (31). The invention also relates to the auxiliary male tools.

Abstract: A method and apparatus for using in rotary kilns having a calciner and a tertiary air duct, which uses the hot air from the tertiary air duct for burning waste material in a combustion chamber formed therein, achieving a complete combustion of the waste material and discharging the hot combustion gas to the tertiary air duct for its use as supplemental energy source by the rotary kiln.

Abstract: Systems and methods for improving transducer response sensitivity in an ultrasound-imaging system are disclosed. One method includes selecting a desired transmit spectrum, quantifying the transmit channel impulse response, calculating a drive signal that when applied to the transmit channel will produce the desired transmit spectrum and applying the drive signal to the transducer. The method may be applied in principle to the receive channels. An improved ultrasound-imaging system in accordance with the invention includes a transducer and a switch controlled to apply an excitation signal to the transducer in a transmit mode of the ultrasound-imaging system. A signal shaper is configured to generate an excitation signal in response to the impulse response of the transmit channel such that a desired ultrasound energy waveform is generated by the transducer. An adaptable filter responsive to a desired echo spectrum and the impulse response of the receive channel of the system may be included.

Abstract: Systems and methods for improving transducer response sensitivity in an ultrasound-imaging system are disclosed. One method includes selecting a desired transmit spectrum, quantifying the transmit channel impulse response, calculating a drive signal that when applied to the transmit channel will produce the desired transmit spectrum and applying the drive signal to the transducer. The method may be applied in principle to the receive channels. An improved ultrasound-imaging system in accordance with the invention includes a transducer and a switch controlled to apply an excitation signal to the transducer in a transmit mode of the ultrasound-imaging system. A signal shaper is configured to generate an excitation signal in response to the impulse response of the transmit channel such that a desired ultrasound energy waveform is generated by the transducer. An adaptable filter responsive to a desired echo spectrum and the impulse response of the receive channel of the system may be included.

Abstract: Systems and methods for improving transducer response sensitivity in an ultrasound-imaging system are disclosed. A preferred method generally includes the steps of: selecting a desired transmit spectrum; quantifying the transmit channel impulse response; calculating a drive signal that when applied to the transmit channel will produce the desired transmit spectrum; and applying the drive signal to the transducer. Other methods include selecting a desired echo response spectrum; quantifying a receive channel impulse response; formulating a filter that when applied to received ultrasound echo signals will produce the desired echo response spectrum; and applying the filter.

Abstract: The present invention provides reversibly blocked primers for use in the amplification of a nucleic acid sequence. Amplifications carried out using the blocked primers result in less non-specific amplification product, in particular, primer dimer, and a concomitant greater yield of the intended amplification product compared to amplifications carried out using unblocked primers.

Abstract: A method and apparatus for applying a label onto a substantially cylindrical article is disclosed. A thin layer, heat activated adhesive hacked label is fed onto the surface of a rotating label transport drum so that the adhesive back faces outward from the drum. The adhesive is heated as the drum rotates so that the adhesive obtains a sufficient temperature to melt. Articles are conveyed into tangential spinning engagement with the drum and into rotative engagement with the leading edge of the label as the label moves into the article wrapping position so that the label wraps about the article and adheres thereto. The articles can include crayons which are somewhat tapered along their length. The articles are conveyed at a skewed angle so that the label wraps about the tapered crayon with end-to-end label alignment thereof.

Abstract: A method and apparatus for applying a label onto a substantially cylindrical article is disclosed. A thin layer, heat activated adhesive backed label is fed onto the surface of a rotating label transport drum so that the adhesive back faces outward from the drum. The adhesive is heated as the drum rotates so that the adhesive obtains a sufficient temperature to melt. Articles are conveyed into tangential spinning engagement with the drum and into rotate engagement with the leading edge of the label as the label moves into the article wrapping position so that the label wraps about the article and adheres thereto. The articles can include crayons which are somewhat tapered along their length. The articles are conveyed at a skewed angle so that the label wraps about the tapered crayon with end-to-end label alignment thereof. The crayon is conveyed onto the drum surface so that the wider "butt" end of the crayon engages the leading edge of the label before the more narrow and of the crayon engages the label.

Abstract: A shoe strap is arranged for securement to an existing shoe construction wherein the shoe strap includes a flexible surrounding strap for securement about an ankle of an individual with a securement buckle portion mounted cooperatively at forward terminal ends of the surrounding strap. A downwardly extending rigid leg includes a mounting for one of a plurality of fastener members for securement and cooperation with an associated shoe. The fastener members are adhesively or mechanically mounted to the downwardly extending leg and include a flexible pad to be positioned overlying the inner sole of the associated shoe, a clamp member, a tooth engagement member for engagement with the medial rear seam of the shoe, or alternatively the use of mechanical fasteners such as projections engageable within teeth mounted within the shoe or an array of hook and loop fasteners for securement to a companion hook and loop fasteners strip securable to the shoe.