Abstract: A wind turbine control system and method, for the type of wind turbines includes a rotor, an asynchronous generator driven by the rotor and configured for providing an active power to a grid, and a power converter connected to the generator and configured to interact with the generator for generating the required active power for the grid. The control system includes a converter control unit for controlling the power converter and for estimating a frequency derivative of the frequency of the grid, and a wind turbine controller configured for receiving the estimated frequency derivative and for considering the received frequency derivative for determining a synthetic inertia. The converter control unit controls the power converter to cause the generator to also provide the synthetic inertia, in the form of active power.

Abstract: A multi-phase process involves physical and chemical methods to recover the oil bases of used oils. The resulting oil base meets the standards and technical specifications necessary for reuse in the formulation of lube oils, greases and alike. The process includes classifying the used oil according to its physicochemical characteristics in order to optimize the subsequent phases. Next, the used oil is subject to physical pre-treatment to remove the solids of about 20 microns, dehydrate them and extinguish the remains of light hydrocarbons. Afterwards, the used oil undergoes extraction with organic chemical solvents on specific proportions within certain pressure and temperature ranges. The output is an extract composed of the oil base, the solvents and a semi-solid precipitate containing the used oil pollutants. Next, the extract is separated from the precipitate by physical methods. Subsequently, the extract passes through another physical procedure that separates the solvents from the oil base.

Abstract: A multi-phase process involves physical and chemical methods to recover the oil bases of used oils. The resulting oil base meets the standards and technical specifications necessary for reuse in the formulation of lube oils, greases and alike. The process includes classifying the used oil according to its physicochemical characteristics in order to optimize the subsequent phases. Next, the used oil is subject to physical pre-treatment to remove the solids of about 20 microns, dehydrate them and extinguish the remains of light hydrocarbons. Afterwards, the used oil undergoes extraction with organic chemical solvents on specific proportions within certain pressure and temperature ranges. The output is an extract composed of the oil base, the solvents and a semi-solid precipitate containing the used oil pollutants. Next, the extract is separated from the precipitate by physical methods. Subsequently, the extract passes through another physical procedure that separates the solvents from the oil base.

Abstract: An apparatus to clear and upgrade a quality of native or recovered compounds, paraffinic or naphthenic, and other hydrocarbons containing compounds or polar species, which are to be separated and to adsorb components responsible for dark appearance or darkening of recycling motor oil, vegetable and animal fatty acids through of porous silica obtained from agricultural waste, including a treatment with adsorbent, a porous silica obtained from agricultural waste; one or more containers with different volumes and geometric shape, according to needs of what is going to be treated, configured for the porous silica, the hydrocarbons and other compounds to be treated in contact; an element for temperature control of the mixture of the silica with the compound to be treated; an element for controlling pressure and flow of the mixture of the silica with the compound; and an element that filters and retains the adsorbent inside of the apparatus.

Abstract: A biaxially oriented film that comprises polypropylene and either polytrimethylene terephthalate or polymethylpentene as a cavitating agent in an amount from 5 wt % to 25 wt %. The film has a haze of from 90% to 100% and a gloss of from 10 to 150. The film may be used in food packaging applications and in industrial applications.

Abstract: A biaxially oriented film that comprises polypropylene and either polytrimethylene terephthalate or polymethylpentene as a cavitating agent in an amount from 5 wt % to 25 wt %. The film has a haze of from 90% to 100% and a gloss of from 10 to 150. The film may be used in food packaging applications and in industrial applications.

Abstract: It has been discovered that the properties of sheet or film materials of broad molecular weight distribution ethylene/propylene rubber impact-modified heterophasic copolymer (ICP) can be improved by blending the ICP with a second polyolefin. The second polyolefin may be a syndiotactic polypropylene (sPP), a random copolymer (RCP) of propylene and comonomer (e.g. ethylene and/or butene) made using a Ziegler-Natta or metallocene catalyst, medium density polyethylene (MDPE), linear low density polyethylene (LLDPE), or low crystalline copolymer of propylene/?-olefin. Improvements include, but are not necessarily limited to, reduced motor amps, lower secant modulus, increased dart drop strength, increased gloss, reduced haze, increased elongation to yield, elimination of stress whitening, improved puncture resistance, and decreased seal initiation temperature. This sheet of film materials may be co-extruded with other resins or laminated with other materials after extrusion.

Abstract: An opaque polymer film is prepared by admixing high crystalline polypropylene with a microvoid causing filler and extruding to form a sheet that is then biaxially stretched to form an opaque film. End uses for these films include soda bottles, candy wrappers and synthetic paper.

Abstract: A biaxially oriented film that comprises polypropylene and either polytrimethylene terephthalate or polymethylpentene as a cavitating agent in an amount from 5 wt % to 25 wt %. The film has a haze of from 90% to 100% and a gloss of from 10 to 150. The film may be used in food packaging applications and in industrial applications.

Abstract: It has been discovered that the properties of sheet or film materials of broad molecular weight distribution ethylene/propylene rubber impact-modified heterophasic copolymer (ICP) can be improved by blending the ICP with a second polyolefin. The second polyolefin may be a syndiotactic polypropylene (sPP), a random copolymer (RCP) of propylene and comonomer (e.g. ethylene and/or butene) made using a Ziegler-Natta or metallocene catalyst, medium density polyethylene (MDPE), linear low density polyethylene (LLDPE), or low crystalline copolymer of propylene/?-olefin. Improvements include, but are not necessarily limited to, reduced motor amps, lower secant modulus, increased dart drop strength, increased gloss, reduced haze, increased elongation to yield, elimination of stress whitening, improved puncture resistance, and decreased seal initiation temperature. This sheet of film materials may be co-extruded with other resins or laminated with other materials after extrusion.

Abstract: It has been discovered that the properties of sheet or film materials of broad molecular weight distribution ethylene/propylene rubber impact-modified heterophasic copolymer (ICP) can be improved by blending the ICP with a second polyolefin. The second polyolefin may be a syndiotactic polypropylene (sPP), a random copolymer (RCP) of propylene and comonomer (e.g. ethylene and/or butene) made using a Ziegler-Natta or metallocene catalyst, medium density polyethylene (MDPE), linear low density polyethylene (LLDPE), or low crystalline copolymer of propylene/?-olefin. Improvements include, but are not necessarily limited to, reduced motor amps, lower secant modulus, increased dart drop strength, increased gloss, reduced haze, increased elongation to yield, elimination of stress whitening, improved puncture resistance, and decreased seal initiation temperature. This sheet of film materials may be co-extruded with other resins or laminated with other materials after extrusion.

Abstract: It has been discovered that the properties of sheet or film materials of broad molecular weight distribution ethylene/propylene rubber impact-modified heterophasic copolymer (ICP) can be improved by blending the ICP with a second polyolefin. The second polyolefin may be a syndiotactic polypropylene (sPP), a random copolymer (RCP) of propylene and comonomer (e.g. ethylene and/or butene) made using a Ziegler-Natta or metallocene catalyst, medium density polyethylene (MDPE), linear low density polyethylene (LLDPE), or low crystalline copolymer of propylene/?-olefin. Improvements include, but are not necessarily limited to, reduced motor amps, lower secant modulus, increased dart drop strength, increased gloss, reduced haze, increased elongation to yield, elimination of stress whitening, improved puncture resistance, and decreased seal initiation temperature. This sheet of film materials may be co-extruded with other resins or laminated with other materials after extrusion.

Abstract: Disclosed is a method of producing a novel biaxially oriented film having a high diffraction of light, and flexibility. In particular, the invention disclosed provides a method for making an opaque impact copolymer film by stretching in two dimensions an impact polypropylene copolymer. The invention is disclosed to be useful for making a material particularly suitable for a variety of applications including labeling media, food packaging and laminates. Also disclosed is a multilayer film having a first impact polypropylene copolymer layer and a second layer of another polymer wherein the multilayer film has significantly reduced haze. Also disclosed is film produced with a filler that has increased porosity and flexibility.

Abstract: The present invention is referred to a safety knob for domestic gas apparatuses of the type that includes a gas valve with a stem, and wherein the stem is pushed against the body of the gas valve to open and regulate the gas flow. The improvements comprising a knob having a body with a back flat section and one or more cavities or projections formed on the back flat section of the knob and a longitudinal orifice also in its back part, which is connected in coincidence with a free end of the stem of the gas valve. The knob includes safety elements for avoiding the axial movement of the knob, the safety elements having a series of projections, wherein the cavities of the knob and the projections of the safety elements are joined or separated one from another, for placing the stem of said valve in a unblocked or blocked position.

Abstract: The invention provides a knob with safety button for a domestic gas that includes a gas valve. A stem is integrated with the gas valve, which is pressed by the knob to press and to simultaneously rotate the stem of the gas valve for opening and regulating the flow of gas through of the valve. The improvements comprising a safety button coupled with the knob, the button being connected by one end with the stem of the valve, for avoiding that the valve be operated in a turn condition when the knob is only pressed, or for facilitating the turn of the knob when the safety button is pressed.

Abstract: A surface cooking appliance having a unique rotatable burner. The surface cooking appliance includes a top surface having a first opening and wherein a gas supply tube is provided having a terminal end adjacent the first opening. An igniter is mounted to the top surface adjacent the first opening. A burner is supported on the top surface above the first opening. The burner includes an inlet port, off-set from the center point of the burner, for receiving gas from the gas supply tube. The burner further includes at least two igniter openings for receiving the igniter such that the burner may be rotated about the terminal end of the gas supply tube and positioned in a plurality of positions wherein the igniter is disposed in one of the at least two openings.

Abstract: A new and distinct fern variety, referred to by its cultivar name, ‘JA1966’, is disclosed. The new variety is a distinct sterile hybrid mutation of the ‘Ghost’ variety characterized by exceptional grey-green colored, vertical new fronds that change color to black with arching fronds as the leaf ages. The new variety displays a stark contrast of its immature grey-green colored fronds with its mature black colored fronds.