Abstract: The present disclosure includes an injection system for providing abrasive slurry output density in a system. In some aspects, the injection system can include a first vessel configured to receive a fluid from a high-pressure pump, a plurality of valves in selective communication with the first vessel, and a controller in communication with the plurality of valves. The controller can be configured to actuate the plurality of valves between a first state, in which a slurry is delivered to the first vessel and a second state in which the slurry is delivered from the first vessel. In some configurations, the controller may actuate the valves from the second state to the first state when an amount of slurry is less than a first threshold, and actuate the valves from the first state to the second state when the amount of slurry is greater than a second threshold.

Abstract: A system and method for ascertaining the concentration of a preselected target substance, characterized by a mitigated tendency for yielding results distorted by a departure from a state of calibration, i.e., by “drift”, which drift is ordinarily caused by temperature and humidity variations; drift-mitigation is achieved by exposure of a target substance to a metal oxide semiconductor material, the temperature of a heating element operatively associated with said material being cycled between a low-temperature interval and a high-temperature interval, in which latter interval the material's temperature is raised to a level at or above the minimum temperature for rapid formation of one or more oxides of the target substance, the oxide formation taking place in a sufficiently short time that the conductivity is reflective of a transient signal amplitude in a brief interval of time, such that the external factors causing drift do not have sufficient opportunity to distort the concentration determination.

Abstract: A portable fuel dilution meter and method includes a plurality of sample bottles each with a lid securable thereto and an absorbent material in the bottle. A housing includes a sample bottle receptacle and a hinged head unit over the receptacle including at least a first needle piercing the lid of a sample bottle loaded into the housing receptacle and extending into the headspace of the sample bottle when the head is closed. A vapor sensor is fluidly coupled to the first needle for analyzing vapors in the headspace of the sample bottle.

Abstract: Provided according to embodiments of the present invention are Hand Hygiene Compliance Confirmation Systems (HHCCS) that include a Hand Hygiene Composition Dispenser (HHCD); a Hand Hygiene Composition Dispenser Monitor (HHCDM) and a Hand Hygiene Compliance Monitor (HHCM). In some embodiments, the HHCDM detects when said HHCD dispenses Hand Hygiene Composition (HHC) and signals said HHCM to start a clock so that if the hands of a person are presented to said HHCM within a pre-defined period of time from the time that said HHCDM sends said signal to said HHCM, said HHCM sends a signal to at least one display to indicate hand hygiene compliance, referred to as a Green Light Condition or GLC. Related apparatus and methods are also provided.

Abstract: A system for injecting high pressure abrasive fluid into an abrasive jet tool in a wellbore comprises an abrasives hopper; a slurry tank connected to the abrasives hopper; a low pressure abrasive pump connected to the slurry tank; a first high pressure vessel connected to the low pressure pump through a first high pressure valve; a high pressure non-abrasive pump connected to the first high pressure vessel through a second high pressure valve; and an abrasive jet tool connected to the first high pressure vessel through a third high pressure valve.

Abstract: A portable fuel dilution meter and method includes a plurality of sample bottles each with a lid securable thereto and an absorbent material in the bottle. A housing includes a sample bottle receptacle and a hinged head unit over the receptacle including at least a first needle piercing the lid of a sample bottle loaded into the housing receptacle and extending into the headspace of the sample bottle when the head is closed. A vapor sensor is fluidly coupled to the first needle for analyzing vapors in the headspace of the sample bottle.

Abstract: A system for injecting high pressure abrasive fluid into an abrasive jet tool in a wellbore comprises an abrasives hopper; a slurry tank connected to the abrasives hopper; a low pressure abrasive pump connected to the slurry tank; a first high pressure vessel connected to the low pressure pump through a first high pressure valve; a high pressure non-abrasive pump connected to the first high pressure vessel through a second high pressure valve; and an abrasive jet tool connected to the first high pressure vessel through a third high pressure valve.

Abstract: A Hand Hygiene Compliance Confirmation System (HHCCS) is disclosed for confirmation of compliance with Hand Hygiene Compliance Procedures (HHCPs) with minimized Response Time (RT) delay.

Abstract: A method and system are provided for injecting high pressure abrasive fluid into an abrasive jet tool. The method and system comprise a slurry tank connected to an abrasive hopper and a low pressure abrasive pump for circulating abrasive slurry and transferring the slurry to a high pressure vessel. The method and system also contain a high pressure non-abrasive pump connected to a high pressure valve for pressurizing the high pressure vessel prior to injecting abrasive fluid into the abrasive jet tool.

Abstract: This invention relates to a system for mitigating the deleterious effect on a gas-detection sensor of exposure to ozone, which system comprises a sensor capable of detecting one or more select gas species, the performance of which sensor is degraded by contact with ozone, and a scrubber capable of absorbing ozone or otherwise converting ozone to one or more other substances so as to mitigate degradation of the sensor's performance; and a method for mitigating such deleterious effect as well.

Abstract: A wireless time-of-flight distance measurement device and/or a motion detector is used at each of a plurality of stations in a wireless network in an enclosed facility to accurately locate a badge-wearing person near the station. The location, badge number and time of detection are transmitted through the network and stored in a computer memory. In a health care facility, hand-washing detectors are located at some of the stations and caused to energize a hand-wash status indicator light on the badge when the wearer has washed his or her hands. The light remains “on” for only a certain length of time, but will be extinguished sooner by a monitor device near each patient when the health care worker leaves the vicinity of the patient. These events also are transmitted and stored so that a timed record of each worker's hand-washing and visits to patients is created.

Abstract: A system for injecting high pressure abrasive fluid into an abrasive jet tool in a wellbore comprises an abrasives hopper; a slurry tank connected to the abrasives hopper; a low pressure abrasive pump connected to the slurry tank; a first high pressure vessel connected to the low pressure pump through a first high pressure valve; a high pressure non-abrasive pump connected to the first high pressure vessel through a second high pressure valve; and an abrasive jet tool connected to the first high pressure vessel through a third high pressure valve.

Abstract: A wireless time-of-flight distance measurement device a motion detector is used at each of a plurality of stations in a wireless network in an enclosed facility to accurately locate a badge-wearing person near the station. The location, badge number and time of detection are transmitted through the network and stored in a computer memory. In a healthcare facility, hand washing detectors are located at some of the stations and caused to energize a hand wash status indicator light on the badge when the wearer has washed his or her hands. The light remains “on” for only a certain length of time, but will be extinguished sooner by a monitor device near each patient when the healthcare worker leaves the vicinity of the patient. These events also are transmitted and stored so that a timed record of each worker's hand washing and visits to patients is created.

Abstract: This invention relates to a system for testing the operation of a detection instrument, and a method involving same.

Abstract: This invention relates to a system for testing the operation of a detection instrument, which comprises a first enclosure having at least two ports and containing a fluid comprising a substance detectable in gas form by the instrument, said fluid being present in part as a vapor phase and in part as a liquid phase in equilibrium with one another, said first enclosure being interconnected with the instrument such that the fluid contained in the first enclosure can be dispensed to the instrument via at least one port of said first enclosure; a second enclosure having at least one port and containing either the same or a different fluid in gas form as compared with the first enclosure, said second enclosure being adapted for selective dispensing of a known or ascertainable mass of the fluid contained therein via at least one port thereof, and being interconnected with the first enclosure such that said mass can be introduced into the volume within said first enclosure through at least one port thereof, thereby t

Abstract: This invention relates to a system for testing the operation of a detection instrument, which comprises a first enclosure having at least two ports and containing a fluid comprising a substance detectable in gas form by the instrument, said fluid being present in part as a vapor phase and in part as a liquid phase in equilibrium with one another, said first enclosure being interconnected with the instrument such that the fluid contained in the first enclosure can be dispensed to the instrument via at least one port of said first enclosure; a second enclosure having at least one port and containing either the same or a different fluid in gas form as compared with the first enclosure, said second enclosure being adapted for selective dispensing of a known or ascertainable mass of the fluid contained therein via at least one port thereof, and being interconnected with the first enclosure such that said mass can be introduced into the volume within said first enclosure through at least one port thereof, thereby t

Abstract: An apparatus for concentrating a vaporous substance, which comprises: a sorbent material capable of capturing a vaporous substance; a first housing in which the sorbent material is located, a heating element proximate the exterior of the housing; a second housing defining a chamber within which the first housing resides, the first housing being located in said chamber such that there is a space permitting gas flow between the outside of the first housing and the inside of the second housing; and a pump capable of causing an exhaust gas to flow through the space in contact with the outside of the first housing; and methods for making and utilizing such apparatus.

Abstract: A method for investigating a target environment to determine whether or in what amount a chemical species may be present therein, which comprises: (a) exposing to said environment an article of manufacture comprising a multiplicity of particles in close-packed orientation, said particles having a core of conductive metal or conductive metal alloy and deposited thereon a ligand which is capable of interacting with said species such that a property of said multiplicity of particles is altered; (b) subjecting said multiplicity of particles to conditions sufficient for said property to be exhibited; and (c) monitoring said property to determine whether there is, or the amount of, any change as an indication of whether, or in what amount, said species is present; a multiplicity of particles suitable for use in such method; and equipment suitable for implementing the method.

Abstract: This invention relates to a system for mitigating the deleterious effect on a gas-detection sensor of exposure to ozone, which system comprises a sensor capable of detecting one or more select gas species, the performance of which sensor is degraded by contact with ozone, and a scrubber capable of absorbing ozone or otherwise converting ozone to one or more other substances so as to mitigate degradation of the sensor's performance; and a method for mitigating such deleterious effect as well.

Abstract: A system which enables the presentation of alternating gas samples to a gas sensor in a detection zone without substantial change of the sample pressure at the sensor in the zone, whereby pressure variations that can produce unwanted sensor signals are mitigated; along with apparatus for facilitating, and a method for implementing, the foregoing.