Abstract: Molten steel is poured using an immersion nozzle and a direct current magnetic field zone is applied to a cast slab over the entire width in the thickness direction thereof at a predetermined distance below the molten metal level in a continuously-casting mold. The immersion nozzle is provided with ejection holes located in at least upper and lower stages, at least one lower ejection hole is disposed such that these satisfy the following formula (1). The supply rate of molten steel from the upper ejection holes is set smaller than the rate consumed by solidification in an upper pool, and a particular solute element is added to the molten steel in the upper pool. 0<h<(½)·w·tan &thgr;  (1) where, &thgr;: downward angle of lower ejection hole(s) (°); w: length of mold in width direction (m); and h: distance from center of lower ejection hole to center of height of magnetic pole (m).

Abstract: Prosaposin, saposin C and various peptide fragments of saposin C stimulate neurite outgrowth in vitro. In addition, prosaposin and saposin C promote increased myelination ex vivo. Prosaposin is present in large neurons of the brain, including both upper and lower motor neurons.

Abstract: A method of rapidly reducing chromium oxide-containing slag and the like in large quantities, in a simplified manner and without requiring high temperatures. Chromium oxides are reduced with at least one of elementary sulfur and compounds of sulfur having a valence less than 6. For an aqueous solution of the sulfur component, desirably, its sulfur content is more than 0.03% by weight. As the sulfur source, preferred is blast furnace slag (e.g., non-aged, gradually-cooled blast furnace slag) that is discharged in large quantities in the iron industry. Cr6+ in chromium oxides is reduced in one of the following ways: (a) Chromium oxide-containing substances are sprayed with or immersed in blast furnace slag-released water that has been used in cooling blast furnace slag. (b) Chromium oxide-containing substances are mixed with blast furnace slag, and then kept in an air atmosphere. Optionally, the mixture is sprayed with blast furnace slag-released water.

Abstract: When molten steel is poured using an immersion nozzle in a state in which a direct current magnetic field zone is applied to a cast slab over the entire width in the thickness direction thereof at a position a predetermined distance below the molten metal level in a continuously-casting mold, the immersion nozzle is provided with ejection holes located in at least upper and lower two stages, at least one lower ejection hole is disposed such that these satisfies the following formula (1), the supply rate of the molten steel from upper ejection holes is set smaller than the rate consumed by solidification in an upper pool, and a particular solute element is added to the molten steel in the upper pool.

Abstract: Prosaposin, saposin C and various peptide fragments of saposin C stimulate neurite outgrowth in vitro. In addition, prosaposin and saposin C promote increased myelination exvivo. Prosaposin is present in large neurons of the brain, including both upper and lower motor neurons.

Abstract: A method of rapidly reducing chromium oxide-containing slag and the like in large quantities, in a simplified manner and without requiring high temperatures. Chromium oxides are reduced with at least one of elementary sulfur and compounds of sulfur having a valence less than 6. For an aqueous solution of the sulfur component, desirably, its sulfur content is more than 0.03% by weight. As the sulfur source, preferred is blast furnace slag (e.g., non-aged, gradually-cooled blast furnace slag) that is discharged in large quantities in the iron industry. Cr6+ in chromium oxides is reduced in one of the following ways: (a) Chromium oxide-containing substances are sprayed with or immersed in blast furnace slag-released water that has been used in cooling blast furnace slag. (b) Chromium oxide-containing substances are mixed with blast furnace slag, and then kept in an air atmosphere. Optionally, the mixture is sprayed with blast furnace slag-released water.

Abstract: A method of rapidly reducing chromium oxide-containing slag and the like in large quantities, in a simplified manner and without requiring high temperatures. Chromium oxides are reduced with at least one of elementary sulfur and compounds of sulfur having a valence less than 6. For an aqueous solution of the sulfur component, desirably, its sulfur content is more than 0.03% by weight. As the sulfur source, preferred is blast furnace slag (e.g., non-aged, gradually-cooled blast furnace slag) that is discharged in large quantities in the iron industry. Cr6+ in chromium oxides is reduced in one of the following ways: (a) Chromium oxide-containing substances are sprayed with or immersed in blast furnace slag-released water that has been used in cooling blast furnace slag. (b) Chromium oxide-containing substances are mixed with blast furnace slag, and then kept in an air atmosphere. Optionally, the mixture is sprayed with blast furnace slag-released water.

Abstract: In this invention, the smelting reduction operation can be carried out in a high efficiency by charging a carbonaceous material in such an amount that total surface area is not less than 60 m.sup.2 per 1 ton of slag weight. Carbon substance finely particulating through thermal crumbling under a high-temperature atmosphere inside the vessel is used as the carbonaceous material, whereby it is possible to stably conduct the smelting reduction while controlling the scattering of the carbonaceous material, and also the erosion, particularly locally erosion of refractory in the smelting reduction furnace, which was a serious problem in the conventional technique, can considerably be decreased to largely prolong the service life of refractory.

Abstract: Prosaposin, saposin C and various peptide fragments of saposin C stimulate neurite outgrowth in vitro. In addition, prosaposin and saposin C promote increased myelination ex vivo. Prosaposin is present in large neurons of the brain, including both upper and lower motor neurons.

Abstract: Prosaposin, saposin C and various peptide fragments of saposin C stimulate neurite outgrowth in vitro. In addition, prosaposin and saposin C promote increased myelination ex vivo. Prosaposin is present in large neurons of the brain, including both upper and lower motor neurons.

Abstract: Prosaposin, saposin C and various peptide fragments of saposin C stimulate neurite outgrowth in vitro. In addition, prosaposin and saposin C promote increased myelination ex vivo. Prosaposin is present in large neurons of the brain, including both upper and lower motor neurons.

Abstract: A method of producing an ultra-low-carbon steel by conducting vacuum-decarburization of a molten steel by means of a vacuum degasifier of the type having recirculation pipes and a vacuum chamber. When the carbon content of the molten steel has come down to a level of 50 ppm or less, hydrogen gas is introduced together with an inert gas into the molten steel either by directly injecting a hydrogen-containing gas into the molten steel in the vacuum chamber through a tuyere provided in the wall of the vacuum chamber or by blowing the hydrogen-containing gas onto the surface of the molten steel in the vacuum chamber through a lance provided in the vacuum chamber. In order to enhance the effect produced by the method of the present invention, it is possible to take an additional measure such as blowing of hydrogen gas through a tuyere provided in the wall of the recirculation pipe or injection of hydrogen or hydrogen-containing gas through an injection lance immersed in the molten steel held in, a ladle.

Abstract: A method of producing an ultra-low-carbon steel by using a vacuum degasser on a molten steel has the steps of conducting vacuum decarburization to attain a predetermined level of carbon content, e.g., 25 ppm or below, in the molten steel while progressively reducing the pressure in said vacuum degasser, conducting addition of hydrogen in which hydrogen is dissolved in said molten steel while said pressure is temporarily elevated to 20 Torr or above, and conducting final decarburization after reducing said pressure to 2 Torr or below. The addition of hydrogen may be conducted to meet the following conditions:[H].gtoreq.{([C]-[C]final)/5}+4wherein [H] represents the hydrogen content (ppm) in said molten steel in the state after the addition of hydrogen, [C] represents the carbon content (ppm) in the molten steel in the state after the addition of hydrogen, and [C] final represents the final carbon content (ppm) to be obtained.

Abstract: A lining apparatus provided with a foldable spray pipe comprising an elevatable vertical support strut supported by a frame, a bifurcated support strut having the upper end thereof connected to the lower end of the elevatable vertical support strut, the bifurcated strut comprising a pair of parallely extending strut elements which define an arm storing space therebetween opening at both sides, a pipe supporting arm foldably connected to the lower end of the bifurcated strut and encasing a spray pipe therein and a protective path formed in each strut element of the bifurcated strut allowing a plurality of lines including a material supply line to pass therethrough.