Abstract: A bed covering system adapted to be used by a user to stay comfortable during sleep. The bed covering system includes a blanket and a pillowcase. The blanket has different heat retention zones of at least one section of heavy material and at least one section of lighter material. The heavy material is of material that retains body heat of the user. The lighter material is of a material that allows the escape of body heat of the user and allows circulation of body heat of the user. The heavy material has a higher weave count to trap and retain heat, and the lighter material is of thinner materials that permits more evaporation from a body of a user than the heavy material.

Abstract: A device to be worn in the nostrils of a user that induces unidirectional airflow through each nostril. This unidirectional airflow may be controlled by a pair of one-way check valves in the path of each nostril.

Abstract: A neck support pillow having a main body and neck support body. The main body having a length, width and thickness and a neck support body attached to the main body, the neck support body having a length, width and thickness. The main body and the neck support body are deformable bodies that are adapted such that when weight is exerted on the main body, the neck support body deforms in an opposite direction by shear weight of the weight placed on the pillow to provide a down escape route in order to avoid traditional bulging upward of the pillow.

Abstract: A bed covering system adapted to be used by a user to stay comfortable during sleep. The bed covering system includes a blanket and a pillowcase. The blanket has different heat retention zones of at least one section of heavy material and at least one section of lighter material. The heavy material is of material that retains body heat of the user. The lighter material is of a material that allows the escape of body heat of the user and allows circulation of body heat of the user. The heavy material has a higher weave count to trap and retain heat, and the lighter material is of thinner materials that permits more evaporation from a body of a user than the heavy material.

Abstract: A method for reducing vortex formation in molten metal when bottom tapping the molten metal from a metallurgical vessel in a metal making process. The method includes the steps of tapping the molten metal via a tapping hole in the metallurgical vessel, and providing a flow of the molten metal in the metallurgical vessel while tapping via a time-varying electromagnetic field applied to the metallurgical vessel, the flow of the molten metal being such that it constantly moves vortices in the molten metal away from a tapping hole region during the tapping to thereby prevent accumulation of the vortices for vortex formation over the tapping hole. It is also presented an arrangement for carrying out the method.

Abstract: A method for melting steel in an electric arc furnace (EAF). A hot heel is provided in the EAF. Metal scrap is loaded into the EAF. The metal scrap is melted in the EAF. The mass of the hot heel in relation to the mass of the metal scrap that is initially beyond the surface of the hot heel is a certain minimum. This minimum is 0.75 times the relation between the heat required to melt the metal scrap beyond the surface of the hot heel and the heat that can be taken from the hot heel without it being solidified when a theoretical heat balance calculation is applied as defined in a formula.

Abstract: An apparatus for electromagnetic stirring of the steel melt in an electrical arc furnace includes two electromagnetic stirrer units, a current supply, and a control unit. The two stirrers are mounted on an outer bottom surface of the electrical arc furnace at opposites sides of a central position of the bottom surface, the current supply is operatively connected to the two electromagnetic stirrer units, and the control unit is operatively connected to the current supply to control the operation of the two electromagnetic stirrer units.

Abstract: A method for melting steel in an electric arc furnace (EAF). A hot heel is provided in the EAF. Metal scrap is loaded into the EAF. The metal scrap is melted in the EAF. The mass of the hot heel in relation to the mass of the metal scrap that is initially beyond the surface of the hot heel is a certain minimum. This minimum is 0.75 times the relation between the heat required to melt the metal scrap beyond the surface of the hot heel and the heat that can be taken from the hot heel without it being solidified when a theoretical heat balance calculation is applied as defined in a formula.

Abstract: A method for reducing vortex formation in molten metal when bottom tapping the molten metal from a metallurgical vessel in a metal making process. The method includes the steps of tapping the molten metal via a tapping hole in the metallurgical vessel, and providing a flow of the molten metal in the metallurgical vessel while tapping via a time-varying electromagnetic field applied to the metallurgical vessel, the flow of the molten metal being such that it constantly moves vortices in the molten metal away from a tapping hole region during the tapping to thereby prevent accumulation of the vortices for vortex formation over the tapping hole. It is also presented an arrangement for carrying out the method.

Abstract: An apparatus for electromagnetic stirring of the steel melt in an electrical arc furnace includes two electromagnetic stirrer units, a current supply, and a control unit. The two stirrers are mounted on an outer bottom surface of the electrical arc furnace at opposites sides of a central position of the bottom surface, the current supply is operatively connected to the two electromagnetic stirrer units, and the control unit is operatively connected to the current supply to control the operation of the two electromagnetic stirrer units.