Abstract: An example of a flow cell includes a substrate; a polymeric hydrogel applied over at least a portion of a surface of the substrate; and a plurality of primers attached to the polymeric hydrogel. The flow cell further includes a plurality of photodegradable oligonucleotide blockers respectively hybridized to at least some of the plurality of primers.

Abstract: Techniques are disclosed. The techniques include receiving, from a camera, an image showing a portion of a physical topography and target object. The techniques include determining, based on the image, a location of the target object shown in the image and a physical characteristic of the target object shown in the image, the physical characteristic being common with at least another target object. The techniques then include determining a three dimensional (3D) position of the target object in a 3D representation of the portion of the physical topography, the 3D position determined based on (i) the location of the target object, and (ii) the physical characteristic. Based on detecting a cluster of 3D positions of target objects (over several images), the techniques involve generating a 3D boundary of a zone of a portion of the physical topography.

Abstract: A clasp is provided having a body defining at least one passageway extending at least partially therethrough, at least one pair of engagement portions pivotally mounted across the body and configured to engage an object located in the at least one passageway, and an actuation portion in communication with the at least one pair of engagement portions and biased in the engaged condition. Actuation of the actuation portion causes the at least one pair of engagement portions to disengage from the object against the biasing force.

Abstract: A loudspeaker chassis assembly (2) comprises a loudspeaker chassis (4) and one or more mass damping elements (6), which dampen vibration of the chassis (4). The mass damping elements (6) may be directly attached to the chassis (4) and may be tuned to dampen one or more particular vibrational modes of the chassis (4).

Abstract: A clasp having a body defining at least one passageway extending at least partially therethrough, at least a pair of engagement portions pivotally mounted across the body and adapted to engage an object located in said at least one passageway, and an actuation portion in communication with the at least a pair of engagement portions and biased in the engaged condition, wherein actuation of the actuation portion causes the at least a pair of engagement portions to disengage from the object against the biasing force.

Abstract: A loudspeaker enclosure defined by one or more panels housing a drive unit. The drive unit includes a coil, a diaphragm, and a magnet. The magnet is decoupled from the one or more panels of the loudspeaker enclosure. Sound is generated by the movement of the diaphragm and complementary movement of the magnet, on application of an appropriate electrical signal to the coil. The moving diaphragm acts against a first volume of air within the enclosure, while the movement of a surface coupled to the magnet, acts against a second air volume, different from the first volume. The surface coupled to the magnet is decoupled from the one or more panels of the loudspeaker enclosure.

Abstract: A loudspeaker enclosure defined by one or more panels housing a drive unit. The drive unit includes a coil, a diaphragm, and a magnet. The magnet is decoupled from the one or more panels of the loudspeaker enclosure. Sound is generated by the movement of the diaphragm and complementary movement of the magnet, on application of an appropriate electrical signal to the coil. The moving diaphragm acts against a first volume of air within the enclosure, while the movement of a surface coupled to the magnet, acts against a second air volume, different from the first volume. The surface coupled to the magnet is decoupled from the one or more panels of the loudspeaker enclosure.

Abstract: A clasp having: a body defining at least one passageway extending from an inlet at a first end of the body to an outlet at a second, opposite end of the body, the second end of the body adapted to secure an elongate member to the body of the clasp, said body comprising a bottom wall, one or more walls extending upward from said bottom wall, the interior of the one or more walls serving to define the passageway, an engagement portion pivotally mounted across the body and adapted to engage the elongate member when located in said at least one passageway, an actuation portion in communication with the engagement portion and biased into an engaged condition, wherein actuation of said actuation portion causes the engagement portion to disengage from the elongate member against the biasing force.

Abstract: A clasp having a body defining at least one passageway extending at least partially therethrough, engagement means pivotally mounted across the body and adapted to engage an object located in said at least one passageway, and actuation means in communication with the engagement means and biased in the engaged condition, wherein actuation of said actuation means causes the engagement means to disengage from the object against the biasing force.

Abstract: A loudspeaker enclosure for mounting in an aperture in a cavity wall with a part of the enclosure being located within the wall cavity adjacent the aperture, comprises a main enclosure unit for mounting in the aperture and housing one or more loudspeaker drive units, and a supplementary enclosure unit for location within the wall cavity and being acoustically connected in use to the main unit to increase the effective internal volume of the enclosure beyond that of the main unit. The supplementary unit is connected to the main unit by an articulated connection enabling the main unit to be angled relative to the supplementary unit while the supplementary unit is being inserted through the aperture and into the wall cavity, and enabling the main unit to be aligned with and acoustically coupled to the supplementary unit when the main unit is positioned in the wall aperture.

Abstract: A clasp having a body defining at least one passageway extending at least partially therethrough, engagement means pivotally mounted across the body and adapted to engage an object located in said at least one passageway, and actuation means in communication with the engagement means and biased in the engaged condition, wherein actuation of said actuation means causes the engagement means to disengage from the object against the biasing force.

Abstract: A loudspeaker enclosure for mounting in an aperture in a cavity wall with a part of the enclosure being located within the wall cavity adjacent the aperture, comprises a main enclosure unit for mounting in the aperture and housing one or more loudspeaker drive units, and a supplementary enclosure unit for location within the wall cavity and being acoustically connected in use to the main unit to increase the effective internal volume of the enclosure beyond that of the main unit. The supplementary unit is connected to the main unit by an articulated connection enabling the main unit to be angled relative to the supplementary unit while the supplementary unit is being inserted through the aperture and into the wall cavity, and enabling the main unit to be aligned with and acoustically coupled to the supplementary unit when the main unit is positioned in the wall aperture.

Abstract: A diaphragm for a loudspeaker drive unit (1), the diaphragm comprising a block of material having a first, sound-radiating front face (20) and a second, rear face (22). The block is stiffened by being bound about over the first and second faces (20,22) by a multiplicity of turns of one or more elongate members of flexible material (36) stiffened by a stiffening composition.

Abstract: A suspension, for the voice coil of a loudspeaker drive unit, includes an inner ring to be connected to the voice coil of the loudspeaker drive unit; an outer ring to be connected to the chassis of the loudspeaker drive unit; and a plurality of radial spoke-like members connecting the inner ring to the outer ring. The radial spoke-like members are free of compressive stress between their ends. The spoke-like members are of greater lateral stiffness than the spoke-like member?s and are substantially X-shaped.

Abstract: A device for safely storing water for later human consumption and other uses comprising a bladder sized to fit in desired location, such as a bathtub or kitchen sink. The bladder preferably includes a sleeve-like member which serves as a water entry or fill point. The bladder also has a port for inserting a pump to remove the water stored within the bladder. A string tie or lanyard can be provided with the sleeve to maintain the securement of the sleeve to the water faucet during filling of the bladder. For larger bladders an extractor tube can be disposed within the bladder and is in fluid communication with the pump assembly. With the storage device safe potable liquid is made available for use and consumption during an emergency situation or other times, when safe water is otherwise unavailable.

Abstract: A loudspeaker system includes a loudspeaker drive unit (1) and a rear sound absorption system (20) having a multiplicity of tubes connected to the rear of the loudspeaker drive unit. In one example, the rear sound absorption system (20) comprises a collector tube (22) for sound waves emerging from a passage in the magnet assembly of the loudspeaker drive unit, an annular diffuser (24) for sound waves coming from the back of the diaphragm (4), and a disk-shaped diffuser (26) for second waves collected by the collector tube (22). The disk-shaped diffuser (26) is part of a basket-like assembly (28) mounted on the rear of the magnet assembly (6). The annular diffuser (24) is mounted against the wall (2) of the enclosure in which the loudspeaker drive unit (1) is mounted. The annular diffuser (24) includes a base portion (24A) with integral upstanding vanes (24B) arranged in a spiral configuration.

Abstract: An acoustic structure includes a first, rigid panel (7), a second, rigid panel (11) aligned in spaced, substantially parallel, relationship with the first panel (7), a multiplicity of partition walls (15) running transverse to the panels of the panels (7, 11) and dividing the interior space of the enclosures into a single layer of cells (17) bounded at one face by the inside of the first panel (7) and bounded at the opposite face by the inside of the second panel (11), the partition walls (15) being bonded at the one face to the inside of the first panel (7) and at the opposite face to the inside of the second panel (11), and a multiplicity of apertures (19) in the partition walls (15) providing communication between adjacent cells of the single layer of cells (17).

Abstract: A loudspeaker system comprises a loudspeaker drive unit (1) and a rear sound absorption system (20) comprising a multiplicity of tubes connected to the rear of the loudspeaker drive unit. In one example, the rear sound absorption system (20) comprises a collector tube (22) for sound waves emerging from a passage in the magnet assembly of the loudspeaker drive unit, an annular diffuser (24) for sound waves coming from the back of the diaphragm (4), and a disk-shaped diffuser (26) for sound waves collected by the collector tube (22). The disk-shaped diffuser (26) is part of a basket-like assembly (28) mounted on the rear of the magnet assembly (6). The annular diffuser (24) is mounted against the wall (2) of the enclosure in which the loudspeaker drive unit (1) is mounted. The annular diffuser (24) comprises a base portion (24A) with integral upstanding vanes (24B) arranged in a spiral configuration.

Abstract: An acoustic structure includes a first, rigid panel (7), a second, rigid panel (11) aligned in spaced, substantially parallel, relationship with the first panel (7), a multiplicity of partition walls (15) running transverse to the panels of the panels (7, 11) and dividing the interior space of the enclosures into a single layer of cells (17) bounded at one face by the inside of the first panel (7) and bounded at the opposite face by the inside of the second panel (11), the partition walls (15) being bonded at the one face to the inside of the first panel (7) and at the opposite face to the inside of the second panel (11), and a multiplicity of apertures (19) in the partition walls (15) providing communication between adjacent cells of the single layer of cells (17).

Abstract: An auxiliary bass radiator unit is disclosed for mounting in an aperture in a loudspeaker enclosure. The unit comprises a substantially rigid panel member (10) mounted on a flexable surround member (12) so as to allow the panel member, when mounted, in use, in the aperture to move in sympathy with sound waves within the enclosure. The flexable surround member includes a hinge portion (14) mounting the panel member for movement as a hinged flap. Thus, movement of the panel member in twisting and other undesirable modes is substantially avoided.