Abstract: Collection and separation systems, collection and separation methods, isotope analysis systems, methods of processing samples to analyze 15N, 13C, and 34S, and the like are provided. A system that includes a collection system in gaseous communication with a first device, wherein the collection system is configured to isolate two or more gases of a gaseous sample and configured to introduce each to a second device independently of one another is provided.

Abstract: An air filtration unit for withdrawing air from a room, purifying the withdrawn air, and then returning the purified air back into the room, the air filtration unit having: a housing configured to be mounted to a surface of the room; an air inlet formed in the housing; an air outlet formed in the housing; a passageway extending through the housing and connecting the air inlet to the air outlet; a filter disposed in the passageway for purifying the air in the passageway; and a suction fan disposed within the passageway for drawing air from the room into the air inlet through the filter and out of the air outlet to the room, whereby to capture at least one substance to the filter.

Abstract: The disclosed technology includes an asbestos abatement device that includes a housing defining a housing cavity. The asbestos abatement device may include first and second inlet ports and a negative air machine outlet coupled to the housing, and a processor coupled to a circuit board positioned inside the housing cavity. The first inlet port may be configured to measure a first pressure of an asbestos containment environment and the second inlet port may be configured to measure a second pressure of an external environment. The processor may be configured to receive first and second pressure data from the first and second inlet ports, respectively, determine a pressure differential between the asbestos containment environment and the external environment based on the received first and second pressure data, determine whether the pressure differential is at or less than a threshold value, and transmit a signal to the negative air machine outlet.

Abstract: A control system for a mitigation device includes a processor and a computer-readable medium that includes instructions executable by the processor. The instructions include monitoring a first measured particulate matter (PM) level of a conditioned space. The first measured PM level includes PM having a first range of sizes. The instructions further include monitoring a second measured PM level of the conditioned space. The second measured PM level includes PM having a second range of sizes. The first and second ranges are different but overlapping. The instructions also include asserting, in response to the first measured PM level being greater than a first predetermined threshold, an activation signal. The activation signal forces operation of a fan of the mitigation device. The instructions include asserting, in response to the second measured PM level being greater than a predetermined percentage of the first measured PM level, the activation signal.

Abstract: Air filter for spray coating, having: a housing designed for showing a cuboid shape, with a face forming an air inlet and an opposed face forming an air outlet; one or more accordion panels with fold lines, to be accordion folded about said fold and to be located in the housing for forming a filtering barrier; the one or more accordion panels of the filtering barrier having at least one pair of flap portions configured to be folded to form a converging profile followed aeraulically by a trapping chamber formed by one of the accordion panels, and openings forming escape lateral passages of the trapping chamber(s).

Abstract: Adsorbent reactors for removing carbon dioxide (CO2) from the atmosphere with several types of sealing door valves, ranging from a single valve element to multiple valve elements, are provided. The sealing door valves are configured to open to allow gases into the reactor, such as allowing ambient air to enter during adsorption, and can close to seal the reactor, such as allowing vacuum conditions to be created inside the reactor and/or steam to be injected into the reactor during desorption. The valves are designed to create minimum resistance to valve motion, minimum obstruction to gas flow when open, minimum allowance of fluid passage when closed, and to minimize dead space within the reactor.

Abstract: The present invention provides a vented individual negative pressure enclosure system for extracting potentially contaminated air from an individual. The system includes an adjustable assemblable and disassemblable frame structure configured to surround a bed, chair, or toilet. A vapor-impermeable sheet extends over the frame structure. An air purification system communicates with a plurality of extraction vents positioned on or in the frame structure. The air purification system may be a water-filtration-based air purification system including a particle growth tube for increasing the size of aerosol droplets to facilitate capture. The air purification system includes a pump and HEPA filter and, optionally, a UV sterilizer.

Abstract: A framed air filter that includes air filter media and a frame with four frame portions. At least one corner of the frame is a bonded, non-integral corner at which a stabilizing flap that integrally extends from a first frame portion of a pair of neighboring frame portions that meet to form the non-integral, bonded corner, is affixed to an inner sidewall of a second frame portion of the pair of neighboring frame portions.

Abstract: The present invention provides an air purifier which includes an outer case (10) having a filtering cavity (15) and a driving cavity (16) space apart from each other, a filter (20) received in the filtering cavity (15), a driving fan (30) received in the driving cavity (16). The outer case has at least one air inlet (17) and an air output arrangement (11). The air purifier further includes an air hub (40) provided between the filtering cavity (15) and the driving cavity (16). The air hub (40) includes a first air drawing frame (41) and a second air drawing frame (42). The first air drawing frame (41) extending within a central cavity (21) of the filter (20) and is coaxially formed with respect to the filter (20). An axial direction of the first air drawing frame (41) is aligned with a longitudinal axis of the driving fan (30). The second air drawing frame (42) peripherally, upwardly and radially extends from the first air drawing frame (41) toward an upper end of the filter (20).

Abstract: A heating, ventilation, and air conditioning (HVAC) control system generates a request to replace a first air filter installed in an air handler of an HVAC system with a second air filter. The second air filter has a particulate matter removal efficiency rating that is greater than a particulate matter removal efficiency rating of the first filter. The system delays for a predetermined period of time and then obtains (i) a first temperature of air downstream of the air handler and (ii) a second temperature of air upstream of the air handler. The system then calculates a temperature difference between the f temperatures and determines whether the temperature difference is within an acceptable range. In response to the temperature difference being within the acceptable range, the system (i) operates the HVAC system using the second air filter and (ii) generates an alert indicating compatibility of the second air filter.

Abstract: An air filter assembly includes a housing having an interior surface that defines an interior volume, a filter element positioned within the interior volume and having a filter media, an air intake formed in the housing, a debris outlet formed in the housing, a filtered air outlet formed in the housing, and a plurality of ribs. The filter element is spaced from the interior surface so that a gap is formed between the filter element and the interior surface to allow air to flow between the filter element and the interior surface. The plurality of ribs extend into the interior volume of the housing so that air flowing from the air intake is directed into the gap and around the filter element to complete a cyclonic filtering pass before flowing along a second airflow pass through the filter element. The outlet passage is configured to direct filtered air into a third airflow pass in a direction opposite to the second airflow pass.

Abstract: An air cleaning apparatus with a moist filter is disclosed. More particularly, the present invention relates to an air cleaning apparatus with a moist filter, being operated such that: water stored in a bottom reservoir tank flows upward in a centrifugal manner; water molecules are finely cleaved in a microfine state and injected through multiple injection holes in the same centrifugal manner to become moist; under such conditions, water flowing into a rotational column, to which a centrifugal force is applied, is filtered while circulating a cycle wherein external air inflowing through air input holes formed below a moist layer is adhered to water molecules in the moist layer and drops down, thereby enabling ultrafine dust as well as fine dust to be filtered with high efficiency and excellent economic advantage.

Abstract: A pulse ring assembly for air cleaner systems that is adapted to produce a pulse ring of gas to clean a filter element. The air cleaner system may include an outer tube and an inner tube configured to receive the inner tube such that at least a portion of an interior surface of the outer tube faces at least a portion of an exterior surface of the inner tube. The outer tube may include a pulse port extending between the interior and exterior surfaces of the outer tube into an outer tube passageway. Filtered air may be configured to flow from a first filter cartridge, through the outer and inner tubes, and to an engine intake. The system may also include a pulse jet apparatus in fluid communication with the pulse port of the outer tube and configured to direct gas through the pulse port towards the first filter cartridge.

Abstract: A detoxification device for removing pathogens from air within an environment. The detoxification device may include a filtration media for catching and retaining particles larger than about 0.3 micrometers (?m) with an efficiency of at least 99%. The detoxification device may also include a heating element having a metallic foam. The heating element may be heated upon application of an electrical current to the heating element. The heating element may, upon being heated, heat the filtration media to a target temperature that is effective to kill a pathogen.

Abstract: A decentralized multi-chamber air duct system for decontaminating air in indoor spaces is provided. The system includes an air duct having positive and negative pressure chambers each in fluid communication with a plenum chamber. A fan extracts air from an indoor space through the negative pressure chamber of the air duct into the plenum chamber, where the air is decontaminated before being discharged back into the same indoor space through the positive pressure chamber of the air duct.

Abstract: The present invention relates to a method for producing an ionization rod and an ionization rod produced according to the method. The invention is characterized in that in a U-shaped duct profile (1) a main line (4) for supply current is placed, in that from this main line branch lines (3) are connected with adjacent carbon fibre brushes held in protective sleeves and in that a thermosetting plastic are laid into the duct profile covering the main part of the protective sleeves.

Abstract: An inlet shield with a first portion that is configured to be secured to an inlet of a turbocharger, and a second portion that is configured to be removably coupled to the first portion via magnets, wherein different second portions may have different mesh layouts allowing a consumer to choose different levels of protection and air flow based on desired use.

Abstract: A frame with a hinged cover is provided, including four frames connected to each other form a rectangular main frame, and at least one edge of the four frames is provided with a hinged cover assembly. The hinged cover assembly includes a hinged cover main body, a hinged cover edge, and an arc-shaped spring piece. The hinged cover edge can be turned around the hinged cover main body; one end of the arc-shaped spring piece is clamped to the hinged cover main body, the other end of the arc-shaped spring piece is clamped to the hinged cover edge. The frame adopts a turn up design, uses an arc-shaped spring piece to play a limit function, and the whole frame can be tightly closed without shaking after being turned up and closed.

Abstract: The present disclosure relates to a protective isolation hood for safe transportation of subjects, comprising a fixed base cover, a rotating auxiliary cover, a base cover sliding seat and a guide rail supporting base. The guide rail supporting base is connected to the base cover sliding seat, the fixed base cover is disposed on the base cover sliding seat, and the rotating auxiliary cover is rotationally arranged on the fixed base cover. A first isolation soft film is arranged at the end of the rotating auxiliary cover away from the fixed base cover, and the fixed base cover, the rotating auxiliary cover and the first isolation soft film constitute a protection space. A filter box is arranged on the fixed base cover, is located in the protection space, and is provided with a disinfection filter screen. The protective isolation hood enables isolation to be maintained throughout transportation of the subject.

Abstract: Described are storage and dispensing systems and related methods, for the selective dispensing germane (GeH4) as a reagent gas from a vessel in which the germane is held in sorptive relationship to a solid adsorbent medium that includes a zeolitic imidazolate framework.