Abstract:
The invention relates to a polymer-active ingredient conjugate and a process for producing the polymer-active ingredient conjugate. The polymer-active ingredient conjugate comprises an active ingredient selected from aryl amino compounds with conjugateable functional groups; and a water soluble polymer, wherein the active ingredient is attached to the water soluble polymer by a covalent bond that is cleavable by biological or physico-chemical means.
Abstract:
A laser beam shaping system which has a laser resonator configured to operate at a resonating, first wavelength range to produce an intracavity resonating beam and a laser gain material, configured to produce gain and to amplify the first wavelength range within the laser resonator. The system has at least one doped medium, which is optically transparent at the first wavelength range, which is doped with a dopant, and which is provided intracavity in the laser resonator and at least one absorbed beam input or coupling configured to generate or receive at least one absorbed beam at a second wavelength range which is different from the first wavelength range and which is directed towards the doped medium. The doped medium has a higher absorption characteristic at the second wavelength range than at the first wavelength range, causing the absorbed beam to have a higher absorption than the resonating beam in the doped medium, but which does not provide gain in the first wavelength range. Optical surfaces of the doped medium are coated to be anti-reflective at the first wavelength range and highly transmissive at the second wavelength range.
Abstract:
A frequency double or mixing laser includes a laser pump, a rear optical element, a Brewster window, a laser generator medium, an output coupler and a nonlinear crystal located inside the resonator cavity. The nonlinear crystal may be located inside the resonator cavity before the output coupler. The laser may further include at least one optical element that controls the phase or/and the amplitude of the fundamental laser beam to a high-order.
Abstract:
The invention provides a process for producing dense titanium and titanium alloy billets or ingots through a melt-free solid-state sintering process; wherein the process includes the introduction of a feedstock powder material of Ti sponge, TiHDH, TiH2, CP Ti their blends and/or blends of these with other alloying elements; the introduction of the feedstock powder material in to a mould capsule without pre-pressing of material; and subjecting the mould capsule to thermal processing in solid state to produce either a dense billet/ingots or a frangible billet without attaining melting of the feedstock material. The invention extends to a method for producing frangible titanium and titanium alloy billets through a melt-free solid-state homogenization process.
Abstract:
This invention relates to a method of and system for facilitating detection of a particular predetermined gas in a scene (14) under observation. The gas in the scene is typically associated with a gas leak in equipment. To this end, the system comprises an infrared camera arrangement (12); a strobing illuminator device (22) having a strobing frequency matched to a frame rate of the camera; and a processing arrangement (24). The processing arrangement is configured to store a prior frame obtained via the infrared camera arrangement; and compare a current frame with the stored prior frame and generate an output signal in response to said comparison. The system also comprises a display device (26) configured to display an output image based at least on the output signal generated by the processing arrangement so as to facilitate detection of the particular predetermined gas, in use.
Abstract:
An in-shell egg pasteurization process includes, in a temperature-raising stage (12), raising the temperature of yolk of a plurality of in-shell eggs (40), simultaneously and at least predominantly by means of microwave radiation, to a pasteurization temperature, the temperature-raising stage (12) including a plurality of elongate or longitudinally extending microwave cavities that are isolated from one another so that microwaves fed into an elongate or longitudinally extending microwave cavity do not leak into any other elongate or longitudinally extending microwave cavity. The in-shell eggs (40) are displaced along the lengths of the elongate or longitudinally extending microwave cavities whilst being irradiated with microwaves. In a pasteurization stage (14), the raised temperatures of the in-shell eggs (40) are maintained for a pasteurization time sufficient to pasteurize the in-shell eggs (40).
Abstract:
An additive manufacturing apparatus is disclosed. The apparatus includes a build platform, a two-dimensional scanning unit configured to consolidate material deposited in a material bed on the build platform, a first moving arrangement, an extraction arrangement and a second moving arrangement. The first moving arrangement is configured to permit the build platform and the scanning unit to be relatively displaced in a direction which is substantially parallel to a surface of the material bed. The second moving arrangement is configured to permit the extraction arrangement to be displaced relative to the build platform and/or the scanning unit.
Abstract:
The invention provides composite adsorption media, which media includes granular activated carbon (GAC) and a layer of a conductive polymer selected from a group having heavy metal absorptive capacity. The layer may preferably be applied to a portion of the surface of the grains to provide a Janus type particle.
Abstract:
A laser apparatus (100) has an excitation source (102, 202, 302) operable to excite a gain medium (114) provided in an optical cavity (112). The excitation source (102, 202, 302) comprises an array of individually-controllable light emitters (204, 304). The laser apparatus (100) includes a control module (120) operable to control each light emitter (204, 304) in the excitation source (102, 202, 302) independently of the other light emitters (204, 304) and in accordance with excitation profile criteria (122), thereby to excite the gain medium (114) in accordance with the excitation profile criteria (122). The profile of the gain medium (144) may thus be changed dynamically, electronically, and rapidly.
Abstract:
A system and method for calibrating a helmet with a plurality of optical markers thereon is provided. The system includes a memory, a camera and a mechanical actuator to which the helmet is connected during the calibration process so that it is movable relative to the camera. A processor is connected to the camera and the mechanical actuator and is programmed to control the mechanical actuator to move the helmet relative to the camera through a plurality of discrete points on a calibration target pattern and at each of the discrete points, control the camera to take a digital image. For each of the images, the processor determines the position of at least one of the plurality of markers in the image and uses the position of the at least one marker in the image together with the position of the mechanical actuator to calibrate the helmet.