A fluid transfer device that aspirates and dispenses fluid without a user needing to directly actuate the fluid transfer device by being actuated for aspiration when inserted into a device such as a vial or for dispensing when inserted into a receiving device such as a cassette. In embodiments, the cassette is designed as part of a system with the fluid transfer device which securely attaches to the cassette when dispensing a fluid sample.
Provided herein are multimodal methods and compositions that combine sequence-tagged antibodies and fluorescent labels in a single reagent. Combined with optimal panel design, high-purity sorting of cells before sequencing has been demonstrated, and furthermore, truly quantitative information on the cell surface markers used for sorting.
Efficient sequence specific gene silencing is possible through the use of siRNA technology. By selecting particular siRNAs by rational design, one can maximize the generation of an effective gene silencing reagent, as well as methods for silencing genes. Methods, compositions, and kits generated through rational design of siRNAs are disclosed including those directed to nucleotide sequences for TTR.
A system including a display output device, a computer including instructions that when executed by the computer, cause the computer to generate a virtual environment, instantiate one or more virtual devices into the virtual environment, instantiate a user representation into the virtual environment, and display the virtual environment, the one or more virtual devices, and the user representation on the display output device, an input device to receive a movement input associated with movement by the user representation in the virtual environment, and the computer further configured with instructions to move or rotate the one or more virtual devices relative to a point of reference in the virtual environment in response to the movement input, while maintaining the user representation stationary.
G06F 3/04815 - Interaction with a metaphor-based environment or interaction object displayed as three-dimensional, e.g. changing the user viewpoint with respect to the environment or object
G06F 21/46 - Structures or tools for the administration of authentication by designing passwords or checking the strength of passwords
G06F 3/0482 - Interaction with lists of selectable items, e.g. menus
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
G06T 19/00 - Manipulating 3D models or images for computer graphics
G06F 3/04845 - Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range for image manipulation, e.g. dragging, rotation, expansion or change of colour
14.
System and method for rapid and accurate trace gas measurement
An embodiment of a system for measuring trace gas concentration is described that comprises a laser absorption spectrometer configured to detect an absorbance measure from a trace gas, as well as a temperature value and a pressure value that correspond to an environment in a gas cell; and a computer having executable code stored thereon configured to perform a method comprising: receiving the absorbance value, the temperature value, and the pressure value; defining a fitting range associated with the trace gas; applying a curve fitting model in the fitting range to the absorbance value using the temperature value and the pressure value as model parameters; and producing a concentration measure of the trace gas.
G01J 3/10 - Arrangements of light sources specially adapted for spectrometry or colorimetry
G01N 21/39 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
G01N 21/3504 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
15.
Display screen of a biological safety cabinet with graphical user interface
An embodiment of a system is described that comprises an ionization chamber electrically coupled with a charge amplifier circuit by a reed switch. The reed switch of the embodiments described herein produces substantially no leakage current and electrically insulates the charge amplifier from the ionization chamber.
14. Airborne explosives vapors are selectively adsorbed on a spiral-wound platinum or platinum-coated ribbon of a preconcentrator cartridge while trapping of nitrogen oxides is avoided. The vapors are released and partially decomposed to liberate nitric oxide gas by flash-heating of the ribbon, these products may then be pyrolyzed if necessary to complete the liberation of nitric oxide gas, and then the liberated nitric oxide gas is detected, as by chemiluminescent detection. Also described are various systems incorporating the explosives vapor detector such as a walk-through portal, a vehicle sniffer, and a system incorporated into the air-handling apparatus of a building. A walk-through explosives detection system is disclosed having a carousel containing an array of preconcentrator cartridges for rapid acquisition and analysis of explosives vapor samples, and which is capable of screening up to ten persons per minute for possession of explosives.
G01N 24/08 - Investigating or analysing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
18.
Tamper seal detection system with conveyor belt and method of use
A method for detecting sealing stickers on a packaging box includes placing a first packaging box onto a conveyor belt of a conveyor belt system at an inspection zone, the first packaging box having a first sealing sticker thereon that at least partially seals the first packaging box closed; and activating a first optical sensor to detect whether the first sealing sticker is located on a first side of the first packaging box while the packaging box is in the inspection zone.
B61L 1/16 - Devices for counting axlesDevices for counting vehicles
B65B 57/18 - Automatic control, checking, warning or safety devices causing operation of audible or visible alarm signals
B65B 7/20 - Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by folding-down preformed flaps
G01V 8/10 - Detecting, e.g. by using light barriers
A tamper seal detection system for detecting a sealing sticker on a packaging box includes a housing at least partially bounding an inspection zone, the inspection zone being configured to receive the packaging box. A first sensor is configured to detect the presence of the first sealing sticker located on the packaging box when the packaging box is received within the inspection zone. A push guide is movable relative to the inspection floor between a first position and a spaced apart second position and can be used to push the packaging box out of the inspection zone.
G01N 21/00 - Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
G01N 21/29 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using visual detection
B65D 55/02 - Locking devicesMeans for discouraging or indicating unauthorised opening or removal of closure
G01N 21/01 - Arrangements or apparatus for facilitating the optical investigation
G01N 21/63 - Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
G09F 3/00 - Labels, tag tickets, or similar identification or indication meansSealsPostage or like stamps
G09F 3/03 - Forms or constructions of security seals
B07C 5/00 - Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or featureSorting by manually actuated devices, e.g. switches
B65B 51/00 - Devices for, or methods of, sealing or securing package folds or closures, e.g. twisted bag necks
B65B 57/00 - Automatic control, checking, warning or safety devices
G01N 21/90 - Investigating the presence of flaws, defects or contamination in a container or its contents
G01N 21/956 - Inspecting patterns on the surface of objects
20.
Fluid density meters auto-start by injection seed vibration using frequency scanning method
A method of initiating a fluid density measurement includes generating a prime resonance of a test fixture by a startup circuit. The method of initiating a fluid density measurement includes closing a feedback loop in response to generating the prime resonance. The method of initiating a fluid density measurement includes maintaining the prime resonance by closing the feedback loop.
G01N 9/00 - Investigating density or specific gravity of materialsAnalysing materials by determining density or specific gravity
G01N 9/34 - Investigating density or specific gravity of materialsAnalysing materials by determining density or specific gravity by using flow properties of fluids, e.g. flow through tubes or apertures by using elements moving through the fluid, e.g. vane
21.
Ultra-high speed imaging array with orthogonal readout architecture
A plurality of unit pixels in a two dimensional imaging array are arranged in a manner that signal charges along a given row are added to other relevant signal charges of the same row. Signal charges along a given column are added to other relevant signal charges of the same column. Summed charge values are output simultaneously from rows and columns to produce one row and one column of image data. The resulting summed data is temporarily stored in on-chip buffers and then output from the chip during the integration time of the next imaging cycle with no loss in imaging duty cycle.
H01L 27/00 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
H04N 3/14 - Scanning details of television systemsCombination thereof with generation of supply voltages by means not exclusively optical-mechanical by means of electrically scanned solid-state devices
22.
Mercury monitoring system and reaction chamber for enhancing conversion of elemental mercury gas into oxidized mercury
A reaction chamber enables a reaction between received elemental mercury gas and an oxidizing agent gas. The reaction chamber includes a porous (or permeable) medium through which to pass the elemental mercury gas and the oxidizing agent gas. Passing of the elemental mercury gas and the oxidizing agent gas through the porous medium supports a number of useful functions. For example, the porous medium enhances mixing of the elemental mercury gas with the oxidizing agent gas to enhance a reaction. Also, the porous medium increases an amount of surface area in a reaction chamber on which reactions (e.g., heterogeneous surface reactions) can take place between the elemental mercury gas and the oxidizing agent gas to form oxidized mercury gas. Accordingly, the reaction chamber configured to include a porous medium enhances a conversion of elemental mercury gas into oxidized mercury gas.
B01J 8/00 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes
G01N 21/00 - Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
G01N 27/00 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
G01N 31/00 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroupsApparatus specially adapted for such methods
G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups
G01N 35/00 - Automatic analysis not limited to methods or materials provided for in any single one of groups Handling materials therefor
G01N 37/00 - Details not covered by any other group of this subclass
−1. The optical signal is transmitted along an optical path through the gas sample. Based on adjusting a pressure of the gas sample, each of the plurality of vibration-rotation absorption transitions associated with the sulfur trioxide can be substantially isolated from interfering absorption by the sulfur dioxide and the water vapor in the gas sample. Based on a spectral analysis, the system generates a value indicative of a concentration of sulfur trioxide in the gas sample.
G01B 11/00 - Measuring arrangements characterised by the use of optical techniques
F23N 5/08 - Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
24.
Low maintenance reference electrode for electrochemical measurements
A low maintenance reference electrode has a liquid junction body with a multiplicity of micron-sized capillary channels extending through the body for transporting electrolyte to a test solution. A viscosity-increasing agent thickens the electrolyte to limit its flow to a rate on the order of microliters/day so that a few milliliters of electrolyte suffice to provide an extended electrode life.
Configurations herein include a novel process and apparatus for generating and maintaining sulfur trioxide gas. The generation system and process operate to provide sulfur trioxide calibration gas for calibrating sulfur trioxide detection devices. The system and process provides a known, concentration of sulfur trioxide gas via a heated catalyst, which enables accurate calibration of measurement equipment. The system functions in part by controlling temperature, amount of moisture, residence time, catalyst selection, diluting generated sulfur trioxide and by locating the sulfur trioxide generator at a point of injection of a sulfur trioxide detection system.
B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
An analyzer having a detector and a neutron source assembly adjacent to the detector is disclosed, wherein the neutron source assembly has a neutron source and a shielding source holder.
G01V 5/10 - Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays using neutron sources
27.
Method for detecting high-energy radiation using low voltage optimized ion chamber
A method for measuring high-energy radiation flux, comprising applying a low voltage to electrodes in an ion chamber filled with a fluid capable of forming ions through the interaction of the fluid with high energy radiation; measuring an ion current signal related to an ion current induced by the low voltage; determining a leakage current; determining a gain; determining a magnitude of the high-energy radiation flux based on the ion current signal, gain, and leakage current; and outputting the result of the magnitude of the high-energy radiation flux.
A particulate monitoring system includes a conduit in which to a pass a fluid sample from an input port to an output port. The particulate monitoring system receives a fluid sample inputted to the conduit through the input port. The fluid sample can include different sizes of particulate matter. The particulate monitoring system controls a flow of the fluid sample through the conduit to age the particulate matter. Gravitational forces cause a portion of the particulate matter in the fluid sample to fall into a basin as opposed to being exhausted through the output port, which is disposed at a vertically higher level of the conduit than the input port. Thus, the particulate monitoring system outputs a portion of the original particulate matter in the fluid sample (e.g., particulate matter that does not drop into the basin out due to gravity) for analysis.
An inlet for a process mass spectrometer, the inlet comprising, a capillary in fluid communication with a sample gas feed; a transfer line in fluid communication to the capillary; a first orifice configured to generate a change in pressure, the orifice comprising at least two measuring ports; a pressure sensor operatively connected to at least one of the two measuring ports; and a second transfer line in fluid communication with the first orifice, the second transfer line also in fluid communication with an external disposal point.
H01J 49/00 - Particle spectrometers or separator tubes
H01J 49/04 - Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locksArrangements for external adjustment of electron- or ion-optical components
30.
Temperature compensation for ion-selective electrodes
Temperature compensation for ion-selective electrodes is obtained by positioning a temperature-measuring element in a chamber of limited thermal mass which is in thermal contact with the measuring electrode filling solution but is thermally isolated from other filling solutions in the electrode. In a preferred embodiment, the temperature-measuring element comprises a thermistor enclosed within thin flexible tubing; the electrical leads of the thermistor are forced against a segment of the inner wall of the tubing by an elongated strand of material abutting the thermistor to enhance heat transfer with the thermistor.
According to example configurations herein, a fluid sample flow including particulate matter passes through a conduit. One or more optical sensors monitor optical energy scattering off of the particulate matter in the fluid sample flow as it passes through the conduit. A magnitude of the optical energy sensed by the one or more optical sensors varies depending on particulate matter present in the fluid sample flow. An analyzer monitors the magnitude of the optical energy sensed by the one or more optical sensors and detects changes in the optical energy. A change in the optical energy can indicate a change in the particulate matter present in the fluid sample flow. In response to detecting the change in the optical energy, the analyzer initiates one or more functions such as recalibration, purging, execution of diagnostics, etc.
Turbulent mixing condensation devices, methods, and systems adapted to condense a working fluid on particles from a sample gas to enlarge the particles for subsequent detection are provided. The device includes a vapor generator adapted to produce a working-fluid saturated carrier gas and a condensation chamber. The working-fluid saturated carrier gas is mixed with a sample gas containing particles to be detected and is then introduced to the condensation chamber. The operating conditions are controlled to enhance the condensation of the working fluid on the particles. The particles are typically forwarded to a particle detection device to detect at least one characteristic, for example, the size, of the particles. The flow of carrier gas to the vapor generator may be regulated to vary the degree of saturation of the carrier gas with working fluid.
A bulk material analyzer (FIG. 2) is variably constructed from an assembly of components The analyzer (FIG. 2) is the type that is used to analyze bulk material (28) transported on a conveyor belt (29) through an activation region (30) between at least one radiation source (element 11) and at least one radiation detector (12) within the bulk material analyzer (FIG. 2) The assembly includes a radiation-source box (11) for disposition either above the activation region (30) or below the conveyor belt (29), a radiation-detector box (12) for disposition on the opposite side of the activation region (30) and the conveyor belt (29) from the radiation-source box (11); and a set of stackable structural beams (14, 15, 16, 17, 18, 19) predominantly containing radiation shielding material and configured for stacking about the activation region (30), the radiation-source box (11) and the radiation-detector box (12) to prevent unwanted radiation being generated and transported to the radiation-detector box (12).
G01N 23/222 - Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or by measuring secondary emission from the material by activation analysis using neutron activation analysis [NAA]
34.
Mercury monitoring system and reaction chamber for enhancing conversion of elemental mercury gas into oxidized mercury
A reaction chamber enables a reaction between received elemental mercury gas and an oxidizing agent gas. The reaction chamber includes a porous (or permeable) medium through which to pass the elemental mercury gas and the oxidizing agent gas. Passing of the elemental mercury gas and the oxidizing agent gas through the porous medium supports a number of useful functions. For example, the porous medium enhances mixing of the elemental mercury gas with the oxidizing agent gas to enhance a reaction. Also, the porous medium increases an amount of surface area in a reaction chamber on which reactions (e.g., heterogeneous surface reactions) can take place between the elemental mercury gas and the oxidizing agent gas to form oxidized mercury gas. Accordingly, the reaction chamber configured to include a porous medium enhances a conversion of elemental mercury gas into oxidized mercury gas.
A vapor analysis system comprising a vapor analyzer capable of collecting and analyzing a vapor sample for detection of a compound that may be contained within the vapor sample. A controller is coupled to the vapor analyzer. The controller is programmed to produce an indicator signal indicative of a relative concentration of the compound detected by the vapor analyzer within the vapor sample. A sample probe includes a housing containing a vapor channel through which the vapor sample is collected, and a vapor cable couples the sample probe to the vapor analyzer to allow collection and channeling of the vapor sample to the vapor analyzer. A multi-dimensional user indicator is disposed on the housing of the sample probe receives and operates in response to the indicator signal to indicate the relative concentration of the compound detected within the vapor sample for presentation via a multi-directional stimulus to a user of the vapor analysis system. Users are able to create user-defined fields in a route entry database and are able to edit route entries while using the vapor analysis system in the field.
G01N 1/22 - Devices for withdrawing samples in the gaseous state
G01N 21/00 - Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
G01N 27/00 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
G01N 30/00 - Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography
A gas analyzer system includes an optical source, an optical filter assembly, a controller, and an analyzer. The optical source generates an optical signal. The optical filter assembly includes different optical filters in which to filter the optical signal. During operation, the controller selects sequential application of each of the different optical filters in a path of the optical signal to modulate the optical signal using different frequency bands of optical energy. The modulated optical signal passes through an unknown sample. Based on absorption of the optical signal by the sample gas at different frequencies, the optical analyzer detects which types of multiple different gases are present in the sample.
The rare earth metal Lutetium in compound form is used in check sources of various shapes and sizes to calibrate and tune radiation detection devices. Radioactive Lutetium-176, a naturally occurring (non man-made) isotope forming part of the Lutetium compound, produces gamma energies of approximately 90, 200, and 300 kilo-electron Volts which are used in the calibration. Such gamma energies are close to the predominant spectral lines of special nuclear materials such as U-235 and Pu-239, which is to be monitored by radiation detection devices. Lutetium in a radioactive calibration source (which is either integrated into the radiation detection device or positioned close to it during calibration) provides benefits including that no reactor or accelerator is required during production or use, for the creation of man-made radioactivity, no dangerous radiation exposure occurs and (because of the long half-life of Lu-176) the radioactive calibration source essentially never needs to be replaced. Moreover, the handling of such a source is much less restrictive and costly than that of a conventional man-made radioactive isotope.
An apparatus for measuring a strength of a magnetic field, including a switch including contacts configured to change position when a switching threshold is reached, wherein the switching threshold is reached by modifying an external magnetic field around the switch, and a coil wound around the switch, wherein the coil is used to modify the external magnetic field, wherein a first current is driven through the coil wound around the switch until a first switching threshold is obtained, wherein a second current is driven through the coil wound around the switch until a second switching threshold is obtained, and wherein a value of the first current when the first switching threshold is reached and a value of the second current when the second switching threshold is reached are used to determine the strength of the magnetic field.
An improved radiation detection device measures a broad range of dose rate levels. According to one arrangement, the radiation detection device calculates a radiation value based on, gamma count information representing counts for different energy levels of radiation in a radiation field as well as a radiation intensity indicator value (e.g., photomultiplier tube anode DC current, measured directly by conventional Analog to Digital Converters or indirectly by power or current consumption information indicating how much energy is required to maintain a photomultiplier tube at a constant voltage) that is at least proportional to an amount of overall radiation energy detected in the radiation sample. Based on a combination of the gamma count information and the radiation intensity indicator value, a controller associated with a corresponding radiation detection device can calculate a radiation dose rate associated with the received radiation sample.
A system for monitoring the viability of an electrochemical cell measures the impedance of the cell over a wide range of impedances and with diminished phase shift over prior methods so that a more nearly accurate assessment of the impedance can be made. The system is particularly useful for four electrode systems, but is not so limited. It may advantageously be incorporated in the cell itself to further minimize cabling artifacts.
An X-ray photoelectron spectroscopy analysis system for analysing an insulating sample 20, and a method of XPS analysis. The system comprises an X-ray generating means 30 having an exit opening 32 and being arranged to generate primary X-rays 46,56 which pass out of the exit opening in a sample direction towards a sample surface 22 for irradiation thereof. It has been found that the X-ray generating means in use additionally generates unwanted electrons 258 which may pass out of the exit opening substantially in the sample direction and cause undesirable sample charging effects. The system further comprises an electron deflection field generating means 380,480,580 arranged to generate a deflection field upstream of the sample surface. The deflection field is configured to deflect the unwanted electrons away from the sample direction, such that the unwanted electrons are prevented from reaching the sample surface.
H01J 47/00 - Tubes for determining the presence, intensity, density or energy of radiation or particles
H01J 49/00 - Particle spectrometers or separator tubes
G21K 1/06 - Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diffraction, refraction, or reflection, e.g. monochromators
42.
Centrifuge rotor assembly and method of connection thereof
A rotor assembly includes an actuator moveable between a first position and a second position. The rotator assembly also includes an engagement mechanism connected and moveable relative to the actuator, wherein the engagement mechanism engages a portion of a centrifuge when the actuator is in the first position and disengages from the portion of the centrifuge when the actuator is in the second position. Also, a method of connecting a rotor assembly to a centrifuge.
A shipping container for a product mounted on casters, weighing on the order of about 150 to 300 pounds and including a box shaped housing. The shipping container comprises a base. A pair of elongated, parallel disposed and spaced apart support members are fixedly mounted on the top of the base. Each support member includes a block of foam material fixedly mounted onto the base and having a tapered front end and a rear end. A strip of low friction material is fixedly mounted on top of the block of foam material.
Efficient sequence specific gene silencing is possible through the use of siRNA technology. By selecting particular siRNAs by rationale design, one can maximize the generation of an effective gene silencing reagent, as well as methods for silencing genes.
C07H 21/04 - Compounds containing two or more mononucleotide units having separate phosphate or polyphosphate groups linked by saccharide radicals of nucleoside groups, e.g. nucleic acids with deoxyribosyl as saccharide radical
45.
Tank for a system that outputs liquid at a user-defined constant temperature
A tank for use in a system that outputs a liquid at a user defined constant temperature in order to regulate the temperature of a piece of equipment includes a body of material defining a chamber for receiving and storing the liquid. The top wall has a fill port and one of the other walls includes an outlet port. An auxiliary port and fluid return port are also included. The body further includes a well, sized to accommodate a deionizer cartridge, extending down into the chamber from an opening in top wall that can be removed. A flow velocity reducer is disposed in the auxiliary port for reducing the velocity of the liquid entering the auxiliary port from the return fluid port and then passing into the fill port so that the liquid does not spray or splash onto the walls of the fill port.
C02F 1/02 - Treatment of water, waste water, or sewage by heating
F28F 13/12 - Arrangements for modifying heat transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
F28F 19/00 - Preventing the formation of deposits or corrosion, e.g. by using filters
46.
Tank for a system that outputs liquid at a user-defined constant temperature
A tank for use in a system that outputs a liquid at a user defined constant temperature in order to regulate the temperature of a piece of equipment includes a body of material having a plurality of walls which collectively define a chamber for receiving and storing the liquid. The top wall has a manual fill port and one of the other walls includes an outlet port. An auxiliary port is located on the manual fill port and a return fluid port is located on the auto refill port. The body further includes a well which extends down into the chamber from an opening in top wall of the tank and which can be removed. The well is sized to accommodate a deionizer cartridge. When the well is removed, either a heater or an immersion pump can be disposed within the chamber. The tank also features a bag filter, a sight gauge and a flow velocity reducer. Finally, a cover assembly is removably mounted on the manual fill port and includes a funnel shaped cover and a removably sealing plug.
F28F 13/12 - Arrangements for modifying heat transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
F28F 19/00 - Preventing the formation of deposits or corrosion, e.g. by using filters
A spectrometer (10) for sample surface analysis by irradiation of the surface by primary particles and a corresponding method of surface analysis spectroscopy. The spectrometer (10) provides sample viewing and secondary charged particle collection substantially normal to the sample surface. A collection chamber (22) comprises a secondary charged particle lens arrangement (20) to focus the emitted particles in a downstream direction along a first normal axis (24) and thereby to define a charged particle optical crossover location (25); and a light-reflecting optical element (50) downstream of the lens arrangement and arranged to receive image light (41) and reflect it away from a second normal axis (42) for providing a viewable image of the surface. The optical element (50) is positioned at, or near to, the crossover location (25) and comprises an opening (52) therethrough, such that the focused particles pass through the opening for downstream spectroscopic analysis substantially without obstruction by the optical element.
Disclosed are a system and method for monitoring total mercury within a gas sample in a substantially continuous manner and for calibrating for both elemental and oxidized mercury. A converter of the Continuous Emission Monitoring System (CEMS) receives a gas sample containing vaporized mercury from a probe. The converter converts oxidized mercury present within the gas sample into an elemental mercury component and an oxidizing component using thermal cracking. The converter also reduces the pressure of the gas sample to minimize recombination of the elemental mercury component with the oxidizing components. A mercury analyzer of the system receives the reduced pressure gas sample from the converter and detects the fluorescence of the elemental mercury within the sample. The mercury analyzer holds the gas sample at the reduced pressure to reduce an effect of fluorescence quenching on the fluorescence of the elemental mercury within the sample and provides substantially accurate measurement of the concentration of the elemental mercury in the gas sample.
The present invention provides a pump device 50 which is usable to dilute a sample 52 before analysis. A first pump 54 pumps the sample to a mixing region 58 where it mixes with a diluent 66. A second pump 64 pumps the diluted sample to the analysis instrument. The flow of the diluent to the mixer is equal to the difference of the flow of the sample to the mixer and the flow of the diluted sample to the instrument. Pumps 54 and 64 are independently controllable by a controller unit which is arranged so that data from the instrument can be used to determine the dilution factor of the sample. Thus, the controller can control this dilution factor in real time, upon receipt of such data from the instrument, by change either one of (or both) the pump's flow rate.
Efficient sequence specific gene silencing is possible through the use of siRNA technology. By selecting particular siRNAs by rationale design, one can maximize the generation of an effective gene silencing reagent, as well as methods for silencing genes.
C07H 21/04 - Compounds containing two or more mononucleotide units having separate phosphate or polyphosphate groups linked by saccharide radicals of nucleoside groups, e.g. nucleic acids with deoxyribosyl as saccharide radical
A01N 43/04 - Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atom with one hetero atom
A method for measuring high-energy radiation includes applying a voltage pulse to electrodes in an ion chamber filled with a gas capable of forming charged ions by the high-energy radiation; measuring an ion current signal related to ion currents induced by the voltage pulse; and determining a magnitude of the high-energy radiation based on the ion current signal.
A storage unit for tracking events associated with an item is disclosed that includes a storage unit, a tracking device, and a processing and/or storage device. The tracking device monitors the presence of an item associated with the storage unit and the temperature of the item at discrete intervals of time. The processing and/or storage device is electrically connected to the tracking device and stores information generated from the tracking device. An automated access system may also be provided that grants access to the storage unit only to authorized users. An external network may also be provided which allows a user to monitor the storage unit including, access to the storage unit, and a temperature of the storage unit.
patents
