Abstract: Mutual inductance-type current sensing apparatus (1) is described which includes a mutual inductance current sensor (11) having a first transfer function. The apparatus (1) also includes a low-pass filter (12) which receives a signal from the current sensor (11). The low-pass filter (12) has a second transfer function configured to attenuate one or more harmonic components of the signal. The apparatus (1) also includes an analogue-to-digital converter (13) which receives and digitises a filtered signal output from the low-pass filter. The apparatus (1) also includes a controller (8) configured to process a digitised signal from the analogue-to-digital converter (13) using a digital processing chain configured to compensate for the frequency and phase responses of the first transfer function and the second transfer function.

Abstract: Mutual inductance-type current sensing apparatus (1) is described which includes a mutual inductance current sensor (11) having a first transfer function. The apparatus (1) also includes a low-pass filter (12) which receives a signal from the current sensor (11). The low-pass filter (12) has a second transfer function configured to attenuate one or more harmonic components of the signal. The apparatus (1) also includes an analogue-to-digital converter (13) which receives and digitises a filtered signal output from the low-pass filter. The apparatus (1) also includes a controller (8) configured to process a digitised signal from the analogue-to-digital converter (13) using a digital processing chain configured to compensate for the frequency and phase responses of the first transfer function and the second transfer function.

Abstract: A coated foam concrete form member, in one embodiment, includes a core formed from a foamed polymeric material, a protective layer covering at least a portion of at least one outer surface of the core, and an adhesive covering at least a portion of an outer surface of the core. The protective layer includes at least one polymeric material.

Abstract: A coated foam concrete form member, in one embodiment, includes a core formed from a foamed polymeric material, and a protective layer covering at least a portion of at least one outer surface of the core. The protective layer includes at least one film forming polymeric material.

Abstract: There is described a biochemical method for detecting one or more protein characteristics. The method utilizes supports (1), wherein the largest dimension (3) of each support (1) is less than 250 &mgr;m and wherein each support (1) incorporates sequential identification means (2).

Abstract: There is describe a biochemical method for detecting one or more genetic characteristics. The method utilizes supports (1), wherein the largest dimension (3) of each support (1) is less than 250 um and wherein each support (1) incorporates sequential identification means (2).

Abstract: A docking apparatus for a plurality of hand-held computers having optical data ports is provided. The docking apparatus includes a plurality of docking bays, a central processing unit, an optical transmitting communication path connected to the central processing unit for transmitting data to the docking bays, and an optical receiving communication path connected to the central processing unit for receiving data from the docking bays. The transmitting and receiving communication paths include light guides adapted to carry the data between the central processing unit and the data port of each computer in its respective docking bay.

Abstract: A surgical device, e.g. a catheter or a prosthesis, is disclosed which is characterised in that it carries, at a predetermined location, a tag formed of a high permeability, low coercivity magnetic material. Also disclosed is a method of locating a surgical device within the human or animal body, which comprises inserting the device into the body together with a magnetically active marker, the marker being associated with a predetermined location on the surgical device; and sensing the position of the marker, and hence of the surgical device, by remotely detecting its magnetic response to an interrogating signal. Systems for use in this method are also disclosed.