Abstract: There is provided a sit-stand stool comprising a seat adapted to support a pelvis of a user and a base. The base supports the seat and is adapted to securely engage a floor. The base is adapted to provide a tilting motion of the seat, between a raised position and a forwardly inclined position, in a vertical plane about a pivot axis in accordance with the posture of the user while constraining the movement to prevent lateral tilting or inclination transverse to the vertical plane. The base is also adapted to prevent a rearward motion beyond the raised position, and a forward motion beyond the forwardly inclined position in order to reduce the risks for the user to lose stability. Such a stool permits to the user to stabilize his posture, without being in a completely seated position.

Abstract: A seating device comprising a connecting element having an end portion dimensioned to be releasably and rotatably inserted into an aperture defined in a ground or floor. The aperture is dimensioned to receive the connecting element so as to support the seating device. The seating device also comprises a supporting element connected to a seat. The supporting element is pivotably connected to the connecting element. Moreover, at least one of the connecting element and supporting element comprises at least one stop so as to permit the supporting element to pivot between a first position whereat the supporting element is in a substantially vertical position, and a second position whereat the supporting element is forwardly inclined of 30 degrees or less with respect to the first position. Such a device is particularly useful for persons who need to stabilize their posture while performing a task.

Abstract: A seating device comprising a connecting element having an end portion dimensioned to be releasably and rotatably inserted into an aperture defined in a ground or floor. The aperture is dimensioned to receive the connecting element so as to support the seating device. The seating device also comprises a supporting element connected to a seat. The supporting element is pivotably connected to the connecting element. Moreover, at least one of the connecting element and supporting element comprises at least one stop so as to permit the supporting element to pivot between a first position whereat the supporting element is in a substantially vertical position, and a second position whereat the supporting element is forwardly inclined of 30 degrees or less with respect to the first position. Such a device is particularly useful for persons who need to stabilize their posture while performing a task.

Abstract: A seating device comprising a connecting element having an end portion dimensioned to be releasably and rotatably inserted into an aperture defined in a ground or floor. The aperture is dimensioned to receive the connecting element so as to support the seating device. The seating device also comprises a supporting element connected to a seat. The supporting element is pivotably connected to the connecting element. Moreover, at least one of the connecting element and supporting element comprises at least one stop so as to permit the supporting element to pivot between a first position whereat the supporting element is in a substantially vertical position, and a second position whereat the supporting element is forwardly inclined of 30 degrees or less with respect to the first position. Such a device is particularly useful for persons who need to stabilize their posture while performing a task.

Abstract: The present invention relates to a serving tray comprising a planar member having a peripheral edge, a top surface dimensioned to receive a load of items and a bottom surface having a bearing portion adjacent to the edge. The bearing portion is dimensioned to rest on a user's forearm and the peripheral edge has a portion with a form permitting the load to be positioned in close proximity to the user's body. The invention further relates to methods for a user to stabilize a serving tray when carrying, loading, or unloading items on the tray as well as to methods for a user to carry items on a serving tray and unload the items therefrom.

Abstract: The present invention relates to a liquefied gas storage barge in the form of a concrete floating structure. The barge of the invention is essentially constituted by a floating structure (1) of reinforced and prestressed concrete containing tanks (2) for liquefied gas. Said tanks (2) are cylindrical tanks each having a cross-section perpendicular to its longitudinal axes that comprises a preferably circular curved portion (3) corresponding to the bottom of said tank, said portion being preferably a bottom half-circumference resting directly on the concrete bottom of the barge, which barge bottom is in the form of adjacent part-cylindrical troughs (3), each part-cylindrical trough having the same preferably circular, partially curved section in register with the bottom of each tank.

Abstract: Process for recovering and reusing effluent gas from an ozonization reactor in a plant for treating effluent, especially sewage, which includes a biological reactor, a clarifier and an ozonization reactor. The effluent gas from the ozonization reactor is brought, as a cocurrent, into contact with a stream of water containing compounds that can be oxidized by the ozone, so that the residual ozone is removed and efficiently consumed. The effluent gas thus stripped of the residual ozone is then, optionally, pressurized using a fluid taken from the plant so as to produce a gas/liquid mixture. The gas liquid mixture is converted into an emulsion of fine bubbles, and the emulsion is introduced into the biological reactor, preferably near the bottom of the latter.

Abstract: The present invention relates to a process for reducing the content of gaseous acid pollutants soluble in water and contained in fumes discharged from an incineration plant, in the course of which the said fumes are cooled by means of indirect heat exchange with a cold fluid, thus producing a condensate containing acid pollutants, and in which, after this cooling stage, the said fumes still containing acid pollutants are washed using the condensate as washing liquid.

Abstract: Garbage incinerator fumes containing water vapor and HCl are drawn downwardly over a cooled tube bundle (41) in a vertical heat exchanger (4), whereat the water vapor condenses and the HCl dissolves in the condensate, which then falls into a collection reservoir (43) for siphon removal. The fumes are maintained above their dew-point temperature throughout the process.

Abstract: A method and apparatus for reducing the amount of water-soluble acid pollutants contained in hot smoke or fumes produced by combustion, such as the incineration of household garbage, in the course of which dust is removed from the smoke and the smoke is then cooled before being released into the atmosphere. A heat exchange process involving a cold fluid is used in the cooling phase, in which the smoke is cooled to a temperature below its dew point so that the resulting total or partial condensation of the water vapor contained in the smoke traps acid pollutants.