Abstract: Methods of providing duplex free-space optical, communication comprising receiving a time-shift keying (TSK) encoded signal and selectively re-modulating—and optionally retro-reflecting —received TSK pulses so as to transmit an on-off keying (OOK) signal wherein modulation is achieved by operating a micro-opto-electronic mechanical system (MOEMS) device having a oscillation period, the difference in timing between logic 1 and logic 0 pulses of the TSK encoded signal being such that each pulse arrives at a time within a single MOEMS device oscillation period chosen to ensure high or low transmissivity through the MOEMS device independent of incident TSK encoded signal pulse value (0 or 1).

Abstract: Adsorptive media for chromatography, particularly ion-exchange chromatography, derived from a shaped fiber. In certain embodiments, the functionalized shaped fiber presents a fibrillated or ridged structure which greatly increases the surface area of the fibers when compared to ordinary fibers. Also disclosed herein is a method to add surface pendant functional groups that provides cation-exchange or anion-exchange functionality to the high surface area fibers. This pendant functionality is useful for the ion-exchange chromatographic purification of biomolecules, such as monoclonal antibodies (mAbs).

Abstract: A plantation window shutter, comprises a frame and a plurality of shutter blades pivotably supported by the frame. The frame has a left stile, a right stile, a bottom rail connected to the left and right stiles and a top rail connected to the left and right stiles. The left stile comprises first and second members joined together, and the right stile third and fourth members joined together. The bottom rail includes first and second end portions sandwiched between the first and second members, and the third and fourth members, respectively. The top rail includes first and second end portions sandwiched between the first and second members, and the third and fourth members, respectively. The left and right stiles include top end portions operably attached to each other. The first and second members have opposing sides including a plurality of mirrored left grooves.

Abstract: A plantation window shutter comprises a frame and a plurality of shutter blades pivotably supported by the frame in a fan configuration. The frame comprises a front surface and a rear surface. The rear surface has a plurality of upper grooves and a plurality of lower grooves, each upper groove being axially aligned with a respective lower groove. Each of the shutter blades has a longitudinal pivotal axis and a top pivot and a bottom pivot aligned along the axis, the top pivot and the bottom pivot being received in respective upper groove and the lower groove for pivotal motion therein. At least one member is attached to the rear surface disposed to bridge over the upper grooves and the lower grooves, thereby to capture the top and bottom pivots within respective the upper grooves and the lower grooves.

Abstract: Methods of providing duplex free-space optical, communication comprising receiving a time-shift keying (TSK) encoded signal and selectively re-modulating—and optionally retro-reflecting—received TSK pulses so as to transmit an on-off keying (OOK) signal. Related apparatus and signals are also provided.

Abstract: A method of synchronising an optical transmitter and modulator comprising transmitting a calibration sequence of pulses from the transmitter to the modulator; varying a control timing drawn from the set comprising the transmit interval timings and the modulator transmission interval timings; monitoring the resulting pulses transmitted by the modulator and selecting a preferred control timing; controlling the optical transmitter and/or modulator responsive to the selected control timing. Corresponding apparatus, systems, signals and programs for computers to implement or control the arrangement are also provided.

Abstract: A hydrogen generator includes a solid hydrogen source.

Abstract: Modifications of vitamin K-dependent polypeptides that lead to enhanced protein function on a weight or molar basis and/or increase of protein lifetime in the circulation are described. Both objectives are important for using vitamin K-dependent polypeptides for pro- and anti-coagulation therapies, as well as for other uses in the circulation.

Abstract: A hydrogen generator includes a solid hydrogen source.

Abstract: Protective casing (10) for electrical equipment which is to be deployed in a hazardous environment comprises a main body portion (12, 14) and one or more protective cages each comprising at least one annulus (20A) surrounding the main body portion and attached thereto by two or more spoke members (20). The invention provides casing which conforms to applicable standards whilst being simple and inexpensive to manufacture.

Abstract: In one embodiment, an electrochemical cell system comprises: a fuel cell stack comprising a fuel cell having a fuel cell hydrogen inlet and a fuel cell hydrogen outlet, and a first electrochemical hydrogen compressor in fluid communication with the fuel cell hydrogen outlet, wherein the first electrochemical hydrogen compressor comprises electrodes in electrical communication with an electricity source, and a compressed hydrogen outlet in fluid communication with the fuel cell hydrogen inlet. In one embodiment, the method of operating the electrochemical cell system comprises: introducing hydrogen feed to a fuel cell at a feed rate of greater than stoichiometry, directing excess hydrogen from the fuel cell to a first electrochemical hydrogen compressor, electrochemically compressing the excess hydrogen to compressed hydrogen, and recirculating the compressed hydrogen gas to the fuel cell.

Abstract: A sorting system wherein particulate material is dispersed by centrifugal force in a layer on an inner surface of a rotating drum, and particles which possess at least one predetermined characteristic are removed from the layer.

Abstract: The present invention is directed to a portable stove. The portable stove comprises a body member which contains burners. The portable stove includes shelves which lock into place onto the body member during use and storage. A griddle having a heat dispersement plate is removably mounted to the body member above the burner. Legs are hingedly and slidingly attached to the body member. The legs may be folded to either a standing position or a carrying position. Accordingly, the shelves, griddle and legs may be secured to the stove during storage.