Abstract: A method of estimating the hydration reactivity of coal ash with high precision and determining the amount of milling water for obtaining a milling product in funicular form at the stage of milling; and a molding method being free from the problem of adhesion to a pressurization board at the stage of molding after the milling. When any collected coal ash exhibits a corrected basicity ((CaO+Fe2O3+MgO)/SiO2 (weight ratio)) of 0.1 or higher and a reactivity index (corrected basicity/(R2O/Al2O3) (weight ratio)) of 10 or higher, the coal ash as a raw ash is transferred to raw ash silo (2). Otherwise, the coal ash is transferred to waste ash silo (3). The raw ash within the raw ash silo (2) is poured in mill (8), and lime and gypsum are added and further milling water is charged thereto and milled.

Abstract: A method of estimating the hydration reactivity of coal ash with high precision and determining the amount of milling water for obtaining a milling product in funicular form at the stage of milling; and a molding method being free from the problem of adhesion to a pressurization board at the stage of molding after the milling. When any collected coal ash exhibits a corrected basicity ((CaO+Fe2O3+MgO)/SiO2 (weight ratio)) of 0.1 or higher and a reactivity index (corrected basicity/(R2O/Al2O3) (weight ratio)) of 10 or higher, the coal ash as a raw ash is transferred to raw ash silo (2). Otherwise, the coal ash is transferred to waste ash silo (3). The raw ash within the raw ash silo (2) is poured in mill (8), and lime and gypsum are added and further milling water is charged thereto and milled.

Abstract: The invention relates to a waterproof grommet having a first member (20) and a second member (30). The first member (20) has a first sealing part (22) formed on the inner surface of a through-hole (21) through which an electrical wire connected to a contact is passed. The first sealing part (22) adheres tightly to the electrical wire. The second member (30) has a second sealing part (32) formed on the outer surface of the through-holes (21) that adheres tightly to the connector housing (40). The first member (20) is formed from an elastic material that has a lower hardness than that of the second member (30). As a result, splitting of the inner surface of the through-holes (21) is prevented without causing any deterioration of the waterproof properties of the joint between the connector housing and the waterproof grommet.

Abstract: The invention relates to a waterproof grommet having a first member (20) and a second member (30). The first member (20) has a first sealing part (22) formed on the inner surface of a through-hole (21) through which an electrical wire connected to a contact is passed. The first sealing part (22) adheres tightly to the electrical wire. The second member (30) has a second sealing part (32) formed on the outer surface of the through-holes (21) that adheres tightly to the connector housing (40). The first member (20) is formed from an elastic material that has a lower hardness than that of the second member (30). As a result, splitting of the inner surface of the through-holes (21) is prevented without causing any deterioration of the waterproof properties of the joint between the connector housing and the waterproof grommet.

Abstract: The present invention provides a relatively compact electrical connector which is equipped with a resilient latching mechanism (21) on one side of a housing (20), and which accommodates a plurality of different types of electrical contacts inside the housing. The housing (20) of the electrical connector (10) has relatively-small first cavities (30a) which accommodate electrical contacts (60) that have contact lances (61), and relatively-large second cavities (30b) which have housing lances (57) used to latch electrical contacts (70). Mold-release apertures (54) used to form the housing lances (57) are located inside rigid walls (81) that protect the resilient latching arm (21) from both sides and mold-release apertures (44) used to form latching shoulders (43) are located in another side of the housing opposite the one side of the housing.

Abstract: A PS plate requiring no dampening water comprises a substrate provided thereon with, in order, a light-sensitive resin layer and a silicone rubber layer, wherein the light-sensitive resin layer is formed from a light-sensitive composition which comprises the following components:(i) at least one monomer represented by the following general formula (I): ##STR1## (wherein R.sup.1 represents, for instance, H or a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms; a to f each independently represents an integer; R.sup.2 and R.sup.3 each independently represents H or a methyl group); (ii) a photopolymerization initiator; and (iii) a polymeric compound having film-forming ability. The hardening properties of the silicone rubber layer is greatly improved and thus there can be obtained a PS plate exhibiting high sensitivity and hence lithographic printing plates having good printing durability.