Abstract: The austenitic stainless steel that does not cause defects such as aging crack or delayed fracture even after the expansion and curling process of 5 steps or more is disclosed. In accordance with an aspect of the present disclosure, an austenitic stainless steel with excellent pipe expanding workability and aging crack resistance includes, in percent (%) by weight of the entire composition, C: 0.01 to 0.04%, Si: 0.1 to 1.0%, Mn: 0.1 to 2.0%, Cr: 16 to 20%, Ni: 6 to 10%, Cu: 0.1 to 2.0%, Mo: 0.2% or less, N: 0.035 to 0.07%, the remainder of iron (Fe) and other inevitable impurities, and the C+N satisfies 0.1% or less, the product of the Md30 (° C.) value and average grain size (?m) satisfies less than ?500.

Abstract: A unit page buffer block includes first to fourth page buffer pairs. Each of the page buffer pairs includes a common column decoder block; and an upper page buffer stage and a lower page buffer stage electrically and commonly connected to the common column decoder block. Each of the upper page buffer stages includes an upper selection block; an upper latch block; and an upper cache block. Each of the lower page buffer stage includes a lower selection block; a lower latch block; and a lower cache block. Each of the upper selection blocks includes first to fourth sub-selection blocks. Each of the upper and lower latch blocks includes first to twelfth upper sub-latch blocks. Each of the upper and lower cache blocks includes first to twelfth upper sub-cache blocks. Each of the common column decoder block includes first to third sub-common column decoder blocks arranged in a row direction.

Abstract: A stainless steel with a yield strength of 2,200 MPa or more is disclosed through the generation of the strain-induced martensite phase and the increase of the martensite phase strength. A high strength stainless steel according to an embodiment of present disclosure includes, in percent (%) by weight of the entire composition, C: 0.14 to 0.20%, Si: 0.8 to 1.0%, Mn: more than 0 and 0.5% or less, Cr: 15.0 to 17.0%, Ni: 4.0 to 5.0%, Mo: 0.6 to 0.8%, Cu: 0.5% or less, N: 0.05 to 0.11%, the remainder of iron (Fe) and other inevitable impurities, and C+N: 0.25% or more and Md30 value satisfies 40° C. or more.

Abstract: Disclosed is a composition for treating or preventing vitiligo or canities comprising Sophora japonica extract as an active ingredient. The Sophora japonica extract enhances melanin synthesis by increasing the activity of tyrosinase which is critical in intracellular melanin synthesis and promoting the expression of tyrosinase and TRP-2 mRNA. Furthermore, since the Sophora japonica extract is a natural substance with little cytotoxicity, it may be developed into a therapeutic agent for vitiligo and canities caused by depigmentation in skin and hair.

Abstract: Disclosed is a composition for treating or preventing vitiligo or canities comprising Sophora japonica extract as an active ingredient. The Sophora japonica extract enhances melanin synthesis by increasing the activity of tyrosinase which is critical in intracellular melanin synthesis and promoting the expression of tyrosinase and TRP-2 mRNA. Furthermore, since the Sophora japonica extract is a natural substance with little cytotoxicity, it may be developed into a therapeutic agent for vitiligo and canities caused by depigmentation in skin and hair.

Abstract: Disclosed is a Brown gas mass production apparatus having a line style electrolytic cell in which an electrolytic cell case having an electrolyte distribution and discharging pipe mounted on the inside bottom surface thereof is coated with insulation material on the inner surface thereof, electrode units are disposed by two or three groups in a side-by-side arrangement in the electrolytic cell case, an electrolytic cell upper plate having gas outlet nipples mounted thereon is sealingly coupled to the top surface of the cell case to form a secured sealing between edges of the upper plate and the cell case.

Abstract: The present invention relates to a heating apparatus using thermal reaction of brown gas. After brown gas generated from a brown gas generator passes hexane liquid in a flame arrester, it is burnt in a brown gas burner located at a lower portion of a heating element. Heating members are installed in multi-stage inside a heating element body of a hollow form. The heating element body located at each stage includes vent holes and exhaust openings. A cover is disposed on the top of the heating element. The heating member located at the lower portion is heated by flame of the brown gas, and then also the heating member located at an upper portion is heated by flame of high temperature caused by the thermal reaction of the brown gas, which gradually heats the lower heating member. After all, the whole heating members are heated to emit a vast heat.

Abstract: Disclosed is a Brown gas mass production apparatus having a line style electrolytic cell in which an electrolytic cell case having an electrolyte distribution and discharging pipe mounted on the inside bottom surface thereof is coated with insulation material on the inner surface thereof, electrode units are disposed by two or three groups in a side-by-side arrangement in the electrolytic cell case, an electrolytic cell upper plate having gas outlet nipples mounted thereon is sealingly coupled to the top surface of the cell case to form a secured sealing between edges of the upper plate and the cell case.

Abstract: A brown gas combustion apparatus and heating system using the same is provided in which a brown gas generated from a brown gas generator flows into a water-tight flame arrester filled with hexane(C6H14) of hydrocarbon systems so as to mix the brown gas with a small amount of hexane gas, to thereby delay the combustion speed and fundamentally prevent flash-back or back-fire. The brown gas combustion apparatus includes a heating unit which is directly heated by a burner and radiates heat. The heating system includes the combustion apparatus installed upright therein, and is configured in that the high temperature water molecules scattered from the combustion apparatus absorb the infrared ray radiated from an infrared ray radiation member within the combustion chamber, and oscillate in an ultra high temperature by self-heating.

Abstract: An energy generating apparatus using the cyclic combustion of Brown gas is disclosed. The apparatus comprises a heat generating unit, an outer wall, a Brown gas generator, an open-shut valve and a burner. The heat generating unit is positioned on a base. The outer wall surrounds the heat generating unit so as to define a combustion chamber, is provided with a discharge hole at its upper portion, and radiates infrared rays. The Brown gas generator is used to generate Brown gas. The open-shut valve is positioned between supply pipes so as to block the Brown gas discharged from the Brown gas generator. The burner is used to heat the heat generating unit by burning Brown gas supplied through the open-shut valve and the supply pipes.

Abstract: The Brown gas heating furnace made of mineral stone maintains a desired temperature with a small amount of fuel. The brown gas heating furnace includes a hollow base, having burner mounting holes formed in a top wall of the base, and a door mounted at a front side of the base. The burners are centrally mounted in the burner mounting holes of the base, with branch ducts connecting each of the burners to a Brown gas supply duct. A heating section consisting of firebricks stacked together in a staggered fashion on the top wall of the base encloses the burner mounting holes, with a furnace section seated on the base and having a combustion chamber surrounding the heating section. The furnace section also has venting holes adapted to vent the combustion chamber to the atmosphere. The furnace section may include stacked blocks made of mineral stone, biotite, germanium, or jade, or may use hollow mineral stones.