Abstract: A filter and a method for removing aldehyde-type VOCs from indoor air are disclosed. The filter includes a casing acting as a container. The container comprises two air-permeable opposite walls through which a volume of said indoor air flows and houses one or more natural polyphenols and a catalytic agent. The filter acts as an absorption filter, reacting irreversibly with the aldehyde-type VOCs of the indoor air. The natural polyphenols are powdered polyphenols selected from resveratrol (3,4?,5-trihydroxystilbene), resorcinol (1,3-benzenediol), pyrogallol (1,2,3-benzenetriol), phloroglucinol (1,3,5-benzenetriol) and hydroquinone (1,4-benzenediol), or combinations thereof. The catalytic agent is a solid sulfonic acid. A mixture of the natural polyphenols and said catalytic agent are present, in the container, as compacted block elements. An air-purifying/decontaminating device comprising the filter is also disclosed.

Abstract: A system for autonomous flight of an electric vertical takeoff and landing (eVTOL) aircraft. The system may include a pusher component, a lift component, a flight controller, and a pilot override switch. The pusher component is mechanically coupled to the eVTOL aircraft. The lift component is mechanically coupled to the eVTOL aircraft. The flight controller is communicatively connected to the pilot override switch. The flight controller is configured to identify a transition point, initiate operation of the pusher component, and terminate operation of the lift component. A method for flight control of an eVTOL aircraft is also provided.

Abstract: The present invention relates to a novel split level sorption refrigeration system. In particular, the present invention provides a split level sorption based unit as a novel method of using the traditional sorption based refrigeration unit. The present invention offers orientation free configuration with efficient cooling power delivery to the various cooling load locations which is achieved by splitting the evaporator of the sorption chiller from the sorption beds and the condenser.

Abstract: A heat exchanger core for a heat pump, comprising a first chamber comprising a chamber body, the chamber body comprising an air inlet, an air outlet and a first heat exchange coil adjacent to the air inlet and inclined with respect to the air inlet; a second chamber comprising a chamber body, the chamber body having an air inlet, an air outlet and a second heat exchange coil adjacent the air inlet and inclined with respect to the air inlet; the first heat exchange coil and the second heat exchange coil forming a circuit for circulating refrigerant between the first heat exchange coil and the second heat exchange coil.

Abstract: At least one embodiment relates to an air purification system comprising a housing, at least one fan, a pump and at least one controller coupled to said housing wherein the controller is configured to control the pump and the fan. There is at least one air intake formed in the housing, at least one biological solution comprising a biological agent and water, disposed in the housing. There is at least one spray nozzle disposed in said housing. The pump is configured to pump the biological solution through the spray nozzle to spray the biological solution from said spray nozzle onto a screen. The screen is positioned in the housing, in a substantially vertical orientation and is configured to interact with air flowing through the housing.

Abstract: A system for determining a position of a receiver from as few as two or three transmitters. The receiver may be stationary or moving with a known velocity. The system includes a receiver clock having a clock bias and a clock drift relative to a reference clock and may also include a motion sensor. A decoder receives transmitted signals from a number of transmitters and determine pseudo-ranges and transmitter frequencies therefrom and a processing unit receives the pseudo-ranges, the transmitter frequencies and the receiver velocity and determines the position of the receiver therefrom. When only two transmitters are available, the position of the receiver is determined dependent upon a known receiver clock drift. The system may also determine clock bias and, when three or more transmitters are available, receiver clock drift. The processing unit uses ranging and Doppler equations in combination, and may also use a measured velocity.

Abstract: A panel assembly includes a panel frame having one or more air outlets surrounding a reference axis. The one or more air outlets include an adjustable port having a port inner edge close to the reference axis and a port outer edge away from the reference axis. On the reference axis, a projection of the port inner edge is located on a side of a projection of the port outer edge facing an outer end of the reference axis. The panel assembly further includes an adjustable plate movably arranged at the adjustable port and having a low-wind-feeling position, at which a plate inner edge of the adjustable plate is close or linked to the port inner edge, and a radial air outlet configured to output air in a direction away from the reference axis is formed between the port outer edge and a plate outer edge of the adjustable plate.

Abstract: Systems, methods and apparatus related to a multijunction solar cell. The apparatus comprises a first sub-solar cell, a second sub-solar cell in series with the first sub-solar cell and one or more quantum wells. At least some of the quantum wells are disposed in a region of the first sub-solar cell, and have a thickness and a bandgap sized such that a bandgap in selected quantum wells are less than a bandgap of a material of the first sub-solar cell and greater than a bandgap of a material of the second sub-solar cell resulting in radiative coupling between the first sub-solar cell and the second sub-solar cell.

Abstract: The present invention relates to radar systems and methods of using same that are more efficient than current radar systems and methods of using same. Such radar systems and methods of using same using employs a plurality of pluses is used to make a decision on the presence or absence of a target. Such radar system and method of using same is more efficient as the position and velocity of a potential target is carried over from pulse burst to pulse burst. Thus, the radar signal structure from the target is the same, which in turn results in a high cross correlation that can used to efficiently decide if signal return is from an actual target or is due to interference.

Abstract: A system for a head-up display for an electric aircraft is presented. The system includes an augmented reality device which may be operated by a pilot using a pilot device and a computing device connected to the pilot device, wherein the computing device is configured to receive an aircraft datum and generate a performance assessment model. The performance assessment model includes a plurality of information relevant to the operation of the electric aircraft. The augmented reality device further includes a projection device configured to project the performance assessment model onto an exterior view window and display the performance assessment model as a function of the projection device.

Abstract: Provided is a system for dispensing fluid. The system includes a housing defining a chamber; an inflatable bag disposed in the chamber and adapted to contain a fluid, the bag being in fluid communication with a flow path for flow of the fluid out of the bag; and a pressure source for inflating the bag to force the fluid from the bag to the flow path at a controlled rate. The bag inflates against an inner surface of the housing such that, prior to the bag being fully inflated, the fluid contained in the bag is forced from the bag at the controlled rate.

Abstract: The invention relates to a sound absorber (1) for a traffic route noise protection wall, wherein the sound absorber (1) comprises at least one plastic foam board (2). According to the invention, a first surface (3) of the plastic foam board (2) has a predeterminable number of sound absorber recesses (4) for predetermination of the absorption behavior with a predeterminable frequency response, wherein each of the sound absorber recesses (4) extends only through part of the thickness (5) of the plastic foam board (2).

Abstract: A locking device for an electric nail gun powered by a gas spring, comprising: a power box, a striker, a fixed central shaft having a notch, a rotatable locking block on the fixed central shaft, which by rotating engages or disengages from the notch to lock or unlock the striker, a tension spring, a guide pad, synchronously rotating with the fixed central shaft and located above the locking block, with the upper part of the guide pad being secured by a lock nut, a pressure plate on the power box, fixed and perpendicular to the striker, secured by a first bolt and a second bolt, a sleeve fitted over the first bolt, and an integral guide part of the guide pad, with its upper surface tightly against the underside of the pressure plate and its side surface closely adjacent to the sleeve.

Abstract: A gasifier for converting a carbonaceous feedstock to produce syngas comprising a cone section and a throat section; wherein the throat section comprises a throat refractory material having an inside surface and a substantially cylindrical cooling element having an inner face and an outer face in a radial direction, and a top face and a bottom face in the vertical direction, wherein the inner, outer, top, and bottom faces define a cooling cavity; and wherein the cooling element is in thermal contact with the throat refractory material on the inner face, the top face, and the outer face.

Abstract: A coil wound heat exchanger utilizing a deformable support system and method for making a tube bundle for the same includes a mandrel, a first tube layer formed by winding one or more tubes around the mandrel, and a plurality of supports and spacers circumferentially-arranged in an alternating pattern on an outer surface of the first tube layer. A second tube layer is formed by winding one or more tubes around the mandrel, whereby the second tube layer contacts an opposite side of the supports. A deforming force is applied to the second tube layer in a direction normal to the outer surface of each support, which causes the one or more tubes forming the second tube layer to deform the outer support surface of each support.

Abstract: A nozzle for a pressure vessel can include a lip design that facilitates an improved reduction in stress at a location at which the nozzle can be joined to the vessel. Embodiments can include a contoured annular lip element for attachment to an end of a vessel to position a nozzle within an opening at an end of the vessel for fluidly connecting the vessel to another plant element. The nozzle can include one or more geometries to position a weld for joining the nozzle to the end of the vessel so that the weld is located at a pre-selected location to experience a pre-selected level of stress during operation of the vessel to facilitate use of a vessel having a reduced overall wall thickness to provide a vessel having an overall lower weight and capital cost while also improving the ease with which maintenance can be performed.

Abstract: A method of fabricating a lithium-ion battery electrodes having desired pore-channel formations. A slurry comprising lithium-ion battery electrode components is aerosol jet printed and then exposed to a drying regime condition so as to dry the printed slurry and obtain a desired degree of porosity of the electrode. Resultant electrodes prepared using a slow drying regime have low porosity and little mesostructure growth. Resultant electrodes prepared using a moderate drying regime have moderate porosity and with enlonged mesostructure growth that is tens of microns in thickness and hundreds of microns in length. Resultant electrode prepared using a rapid drying regime have high porosity and with small aggregate mesostructures.

Abstract: A brake pipe pressure monitoring system evaluates the flow of pressure in the brake pipe and alerts the train driver when the brake pipe flow indicates a brake system failure. The system has a brake pipe pressure module coupled to computer controlled brake as well as to a brake pipe pressure transducer, a main reservoir pressure transducer, and a flow transducer that determines the amount of pressure flow from the main reservoir to the brake pipe. The brake pipe pressure module is programmed to calculated and track the flow in the brake pipe over time and to determine whether the flow in the brake pipe over time exceeds a predetermined threshold. In the even that flow exceeds the predetermined threshold, the computer controlled brake is signaled to alert the train driver of the failure condition.

Abstract: A residue stream comprising liquid hydrocarbons and metal-rich solid particles is reacted with an oxidant stream in a gasifier to produce a syngas stream that is quenched in a water bath. The risk of plugging in the water lines is reduced by removing solids from the recycled water streams. Acid gases are stripped from at least a portion of the recycled water to reduce the risk of precipitates forming from the reaction of dissolved acid gases with metal ions.

Abstract: An air conditioner includes an indoor unit and an outdoor unit. The outdoor unit includes a housing, a compressor, a first damping member, and a second damping member. The compressor is provided with a pipe. The first damping member and the second damping member each are disposed on the pipe. The second damping member is located at a preset position of the pipe. The first damping member and the second damping member are configured to change a natural resonant frequency of the pipe to a target frequency. The second damping member includes a housing assembly and a clamping groove. The clamping groove is disposed on a side of the cavity proximate to the pipe, so that a center of gravity of the second damping member deviates from a center of gravity of a portion of the pipe connected with the damping groove.