Abstract: A solid component activator for use in a geopolymer cement containing a silico-aluminate material comprising a mixture of sodium silicate and sodium carbonate for activating the geopolymer cement by increasing reactivity of the silico-aluminate material in the geopolymer cement when forming geopolymer concrete.

Abstract: Provided are imaging agents comprising a compound of Formula I, or a pharmaceutically acceptable salt thereof, and methods of their use.

Abstract: A modular scaffold board comprising: a plurality of board members of different lengths; and at least one joining member, for joining the board members in an end-to-end fashion. A kit of parts comprising a plurality of board members of different lengths, joining members and end parts for forming modular scaffold boards in a wide variety of lengths is also described.

Abstract: The present invention provides for streamlined issuance of certificates and other tokens that are contingent on key attestation of keys from a trusted platform module within a computing platform. Various methods are described for wrapping the requested token in a secret, such as an AES key, that is encrypted to a TPM based key in a key challenge. If the requesting platform fails the key challenge, the encrypted certificate or token cannot be decrypted. If requesting platform passes the challenge, the encrypted certificate or token can be decrypted using the AES key recovered from the key challenge.

Abstract: An electrical contact grid array includes a board having a top side and an opposite bottom side, a plurality of signal conductors mounted to the board, and a plurality of ground shield structures mounted to the board. Each of the signal conductors includes an upper signal contact extending beyond the top side of the board for electrically connecting with a corresponding mating contact of a mating circuit board. Each of the ground shield structures includes at least one ground contact disposed above the top side of the board that defines an upper annular shield. The upper annular shield circumferentially surrounds at least one of the upper signal contacts.

Abstract: Blood separation systems and methods are provided for controlling the interface between separated blood components. The system includes a centrifuge assembly having a light-transmissive portion, a light reflector, and a fluid processing region therebetween. An optical sensor system emits a scanning light beam along a path toward the light-transmissive portion, which transmits at least a portion of the scanning light beam to the fluid processing region and the light reflector. The light reflector reflects at least a portion of the scanning light beam toward the optical sensor system along a path substantially coaxial to the path of the scanning light beam from the optical sensor system toward the light-transmissive portion of the centrifuge assembly. The scanning light beam may be a white light beam or narrow spectrum beam. The reflected beam may be directed through the optical sensor system via optical fibers.

Abstract: A coolant storage tank (1) for storing coolant in a fuel cell system (2), the coolant storage tank comprising a plurality of individually controllable heater elements (7, 8a, 8b). A coolant storage tank comprising a first heater element (7) located at a base of the coolant storage tank and a second heater element (8a) is also disclosed. A coolant storage tank comprising a first coolant storage compartment (50) in fluid communication with a second coolant storage compartment (51), the first coolant storage compartment including at least a first heater element (54) and wherein the second coolant storage compartment is unheated is also disclosed. A method of melting frozen coolant in a coolant storage tank is also disclosed.

Abstract: A method of determining a measure of wave speed or wave intensity in a fluid conduit comprises uses ultrasound measurements to determine the conduit diameter, as a function of time, at a longitudinal position of the conduit, and uses ultrasound measurements to determine fluid velocity, as a function of time, in a volume element at said longitudinal position of the conduit. The ultrasound measurement to determine fluid velocity is effected by tracking objects within the fluid flow in successive frames sampling the volume element, and obtaining displacement vectors for the objects. A wave speed may be determined from a ratio of the change in fluid velocity at the longitudinal position as a function of time and the change in a logarithmic function of the conduit diameter as a function of time. A measure of wave intensity may be determined as a function of change in determined conduit diameter and corresponding change in fluid velocity.

Abstract: A scroll pump tip seal to be fitted to a tip face of a scroll wall of a first scroll of a scroll pump to seal between the tip face and a base plate of a second scroll of the scroll pump has a first end, a second end and a plurality of flexure formations. The flexure formations are at least partial discontinuities in the tip seal disposed at spaced apart intervals between the first and second ends of the tip to facilitate lateral flexure of the tip seal.