Abstract: A device is disclosed herein, said device for determining whether a day is suitable for planting a seed on a plot of land, said device comprising a microprocessor programmed to: (a) select at least one electronic data source containing meteorological data and/or soil temperature for the plot of land by a method comprising: (a1) determining the location of the plot of land; and (a2) selecting a data source providing local weather forecasting services and/or soil data services for the location of the plot of land; (b) electronically receive from the at least one electronic data source: (b1) meteorological data for the plot of land comprising a high surface air temperature and a low surface air temperature for each of the plurality of consecutive days; and (b2) at least one soil temperature for each of the plurality of consecutive days; and (c) select an alpha day within the plurality of consecutive days and determine whether it is suitable for planting the seed based on the meteorological data, the soil tempera

Abstract: A device is disclosed herein, said device for determining whether a day is suitable for planting a seed on a plot of land, said device comprising a microprocessor programmed to: (a) select at least one electronic data source containing meteorological data and/or soil temperature for the plot of land by a method comprising: (a1) determining the location of the plot of land; and (a2) selecting a data source providing local weather forecasting services and/or soil data services for the location of the plot of land; (b) electronically receive from the at least one electronic data source: (b1) meteorological data for the plot of land comprising a high surface air temperature and a low surface air temperature for each of the plurality of consecutive days; and (b2) at least one soil temperature for each of the plurality of consecutive days; and (c) select an alpha day within the plurality of consecutive days and determine whether it is suitable for planting the seed based on the meteorological data, the soil tempera

Abstract: A device is disclosed herein, said device for determining whether a day is suitable for planting a seed on a plot of land, said device comprising a microprocessor programmed to: (a) select at least one electronic data source containing meteorological data and/or soil temperature for the plot of land by a method comprising: (a1) determining the location of the plot of land; and (a2) selecting a data source providing local weather forecasting services and/or soil data services for the location of the plot of land; (b) electronically receive from the at least one electronic data source: (b1) meteorological data for the plot of land comprising a high surface air temperature and a low surface air temperature for each of the plurality of consecutive days; and (b2) at least one soil temperature for each of the plurality of consecutive days; and (c) select an alpha day within the plurality of consecutive days and determine whether it is suitable for planting the seed based on the meteorological data, the soil tempera

Abstract: A process for treating water that includes ammonium. The water is directed to a biological reactor and the quantity of nitrates formed in the reactor and the quantity of ammonium reduced in the reactor is determined. A ratio of the quantity of nitrates formed to the quantity of ammonium reduced is determined. Further, the percentage of ammonium reduced is also determined. The water in the biological reactor is aerated by injecting oxygen into the reactor where the amount of oxygen injected is a function of the ratio and the percentage of ammonium reduced in the reactor.

Abstract: The jet engine of the invention comprises an exhaust nozzle of variable section, comprising at least one flap pivot mounted about a pin, the pin being joined to the fixed structure of the jet engine via two braces each comprising a bore for housing the pin, the flap being pivot commanded by an actuating cylinder, connected to two fasteners which each comprise a bore through which the pin passes and about which they rotate. The jet engine is characterized by the fact that the pin, the bores of the braces and bores of the fasteners are arranged so that the contacts between the pin with the bore walls of the braces and with the bore walls of the fasteners are made over convex surfaces. Therefore, when in operation, in the event of pin bending the contact surfaces follow this convex shape and are suitably distributed.

Abstract: The seal is composed of butt-jointed segments (1) in which the bearing surface (18) on a rotating part (2) subject to wear, includes a hollow chamber (20) communicating through calibrated orifices (22) with a high pressure containment (8). Therefore, it fills up with gas which tends to force it away from the surface, thus reducing the contact pressure without introducing excessive leaks.

Abstract: Sealing unit made up of a floating body placed between a stator and a rotor, axially mobile along the stator and carrying sealing joints between a high pressure area and a low pressure area separated by the rotor. Another pair of joints and by, by stopping against rotor when the latter is displaced axially, allows a resultant pressure force to be exerted which moves floating body in the same direction as the rotor to reach a position of balance in which the elastic joints operate in satisfactory manner without being subjected to excessive wear and without breaking the seal.