Abstract: This non-oriented electrical steel sheet has a predetermined chemical composition, one or more particles that are a precipitate of a sulfide or an oxysulfide of one or more selected from the group consisting of Mg, Ca, Sr, Ba, Ce, La, Nd, Pr, Zn, and Cd or both the sulfide and the oxysulfide and have a diameter of more than 0.5 ?m are present in a visual field of 10000 ?m2, and, when EBSD observation is performed on a surface parallel to a steel sheet surface, in a case where a total area is indicated by Stot, an area of {100} orientated grains is indicated by S100, an area of orientated grains in which a Taylor factor M becomes more than 2.8 is indicated by Styl, a total area of orientated grains in which the Taylor factor M becomes 2.8 or less is indicated by Stra, an average KAM value of the {100} orientated grains is indicated by K100, and an average KAM value of the orientated grains in which the Taylor factor M becomes more than 2.8 is indicated by Ktyl, 0.20?Styl/Stot?0.85, 0.05?S100/Stot?0.

Abstract: A non-oriented electrical steel sheet of the present invention has a chemical composition capable of causing ?-? transformation, and contains 0.0005% to 0.0050% of Ti, in which, in a case where an area ratio of grains having a crystal orientation of an {hkl}<uvw> orientation (within a tolerance of 10°) when measured by EBSD is denoted as Ahkl-uvw, A411-011 is 15.0% or more, and the non-oriented electrical steel sheet has an average grain size of 10.0 ?m to 40.0 ?m.

Abstract: A method for treating a fluorine element-containing exhaust gas including a first step of contacting the fluorine element-containing exhaust gas with water and a second step of contacting a gas component discharged from the first step with a basic aqueous solution including a reducing agent.

Abstract: A method for treating a fluorine element-containing exhaust gas including a dilution step of diluting a fluorine element-containing exhaust gas (a) with an inert gas so as to have a fluorine gas (F2) concentration of 25% by volume or less to prepare a diluted gas (b) and a water absorption step of contacting the diluted gas (b) with water to obtain a treated gas (c).