Abstract: An aperture plate assembly for an analytical instrument comprises a first sub-assembly comprising an aperture plate and a second sub-assembly comprising a guide. The first sub-assembly is configured to be attached to the second sub-assembly such that the aperture plate is positioned in a first position relative to the second sub-assembly. The first sub-assembly and the second sub-assembly are configured such that when the first sub-assembly is engaged by the guide, the aperture plate can be moved into the first position and the first sub-assembly can be attached to the second sub-assembly.

Abstract: A scoop has a handle and curvilinear base such that the scoop is narrower at an extreme end and deeper at a back end, the back end meeting a handle. A front most region of the device meets the top side of the device in some embodiments, such that side walls, the top side, and the bottom side join at a front end. The bottom side of the base has a plurality of spaced apart slats with portals therebetween. The slats are closer together near the front side than the back side, becoming progressively more spaced apart. In this manner, a smallest size particulate matter falls through the slats at the front end of the device while progressively larger particulate matter falls through towards the back end of the device in proportion to the increasing space between the slats.

Abstract: A solar photovoltaic (PV) water heating system includes a tank including at least a first heating unit having at least first and second heating elements, at least one of which is switchable; a PV solar collector; an inverter adapted to convert the output from the PV collector to an alternating power supply; a modulator to modulate the alternating power supply from the inverter; a controller adapted to control the modulator and the switching of the or each switchable heating element; wherein the controller is adapted to control the modulator and the switchable heating elements to maximize the energy drawn from the PV collector.

Abstract: A scoop has a handle and curvilinear base such that the scoop is narrower at an extreme end and deeper at a back end, the back end meeting a handle. A front most region of the device meets the top side of the device in some embodiments, such that side walls, the top side, and the bottom side join at a front end. The bottom side of the base has a plurality of spaced apart slats with portals therebetween. The slats are closer together near the front side than the back side, becoming progressively more spaced apart. In this manner, a smallest size particulate matter falls through the slats at the front end of the device while progressively larger particulate matter falls through towards the back end of the device in proportion to the increasing space between the slats.

Abstract: A solar photovoltaic (PV) water heating system includes a tank including at least a first heating unit having at least first and second heating elements, at least one of which is switchable; a PV solar collector; an inverter adapted to convert the output from the PV collector to an alternating power supply; a modulator to modulate the alternating power supply from the inverter; a controller adapted to control the modulator and the switching of the or each switchable heating element; wherein the controller is adapted to control the modulator and the switchable heating elements to maximize the energy drawn from the PV collector.

Abstract: An electric water heater tank adapted for connection to a controller, the tank including one or more electrical heating elements temperature sensing means mounted on the exterior of the tank wall and adapted to obtain a measurement of the temperature of the water in the tank, the temperature sensing means and each heating element being connected to an externally accessible connection means. The tank can include one or more heating element control means each connected to a corresponding one of the heating elements. The element control means can be connected to the externally accessible connection means.

Abstract: A solar photovoltaic (PV) water heating system includes a tank including at least a first heating unit having at least first and second heating elements, at least one of which is switchable; a PV solar collector; an inverter adapted to convert the output from the PV collector to an alternating power supply; a modulator to modulate the alternating power supply from the inverter; a controller adapted to control the modulator and the switching of the or each switchable heating element; wherein the controller is adapted to control the modulator and the switchable heating elements to maximize the energy drawn from the PV collector.

Abstract: A method for measuring two-phase mixture quality in a fluid may include providing a densitometer with a densitometer body, a resonator tine, a drive transducer, and a pickup transducer. The method may also include exposing the resonator tine to the fluid and oscillating the resonator tine with the drive transducer. In addition, the method may include measuring the oscillation of the resonator tine with the pickup transducer, and determining a density of the fluid based on the measured oscillation of the resonator tine. The method may also include determining a two-phase mixture quality based on the determined density.

Abstract: A gene expression signature of colon cancer, microarrays including them and methods of using the colon gene expression signature are provided. The gene expression signature is especially useful for determining the prognosis of a patient diagnosed with colon cancer, such as stage II colon cancer. The gene signature described herein is also useful for determining effectiveness of surgical resection with or without adjuvant chemotherapy, and determining possibility of cancer recurrence in patients with colon cancer.

Abstract: A method for measuring two-phase mixture quality in a fluid may include providing a densitometer with a densitometer body, a resonator tine, a drive transducer, and a pickup transducer. The method may also include exposing the resonator tine to the fluid and oscillating the resonator tine with the drive transducer. In addition, the method may include measuring the oscillation of the resonator tine with the pickup transducer, and determining a density of the fluid based on the measured oscillation of the resonator tine. The method may also include determining a two-phase mixture quality based on the determined density.

Abstract: A gene expression signature of colon cancer, microarrays including them and methods of using the colon gene expression signature are provided. The gene expression signature is especially useful for determining the prognosis of a patient diagnosed with colon cancer, such as stage II colon cancer. The gene signature described herein is also useful for determining effectiveness of surgical resection with or without adjuvant chemotherapy, and determining possibility of cancer recurrence in patients with colon cancer.