Abstract: A conductive paste including a conductive powder, a glass frit, and an organic vehicle, wherein the conductive powder includes copper and/or nickel as a main component(s), and the glass frit is substantially free of Pb, Cd, and Bi, comprises 40 to 65% by mass of BaO, 15 to 23% by mass of B2O3, 2 to 12% by mass of Al2O3, 4 to 8% by mass of SiO2, 0 to 5% by mass of ZnO, 0.5 to 7% by mass of TiO2, 3 to 7.5% by mass of CaO, and comprises any one or more of MnO2, CuO, and CoO in the ranges of 0 to 7% by mass of MnO2, 0 to 16% by mass of CuO, and 0 to 5% by mass of CoO, in terms of oxide.

Abstract: A conductive paste including a conductive powder, a glass frit, and an organic vehicle, wherein the conductive powder includes copper and/or nickel as a main component(s), and the glass frit is substantially free of Pb, Cd, and Bi, comprises 40 to 65% by mass of BaO, 15 to 23% by mass of B2O3, 2 to 12% by mass of Al2O3, 4 to 8% by mass of SiO2, 0 to 5% by mass of ZnO, 0.5 to 7% by mass of TiO2, 3 to 7.5% by mass of CaO, and comprises any one or more of MnO2, CuO, and CoO in the ranges of 0 to 7% by mass of MnO2, 0 to 16% by mass of CuO, and 0 to 5% by mass of CoO, in terms of oxide.

Abstract: To provide a content usage management device capable of correctly determining limitation-on-usage information about contents, such as an expiration date. A memory card 2 has a storage section 22 for storing coupon data 221 and expiration date data 222 as information about contents, and a processing section 21 for performing processing pertaining to the contents. When information about the time of the portable terminal 1 has been changed, card control means 212 of the processing section 21 detects a change-of-time event; acquires the current time of the portable terminal 1 achieved before and after the change of time, by way of data communications means 211; and updates the expiration date data 222 stored in the memory card 2 in accordance with the time information. When the expiration date of the coupon is determined, the expiration date data 222 stored in the memory card 2 are compared with the current time of the portable terminal 1, to thus determine whether or not the coupon is valid.

Abstract: In a gas carburizing method, a hydrocarbon gas and air are supplied to a furnace main body that carburizes a workpiece. The hydrocarbon gas and air react with one another in the furnace main body to generate an atmospheric gas having a carburizing property. The flow rate of the hydrocarbon gas to be supplied is maintained at a predetermined value. The flow rate of air to be supplied can be altered by adjusting the carbon potential of the atmospheric gas.A gas carburizing apparatus includes a furnace main body and load and unload chambers provided on two ends of the furnace main body. The load and unload chambers have combustion units. The combustion units communicate with the interiors of the load and unload chambers and burn a hydrocarbon gas. The combustion gas of the hydrocarbon gas is supplied to the load and unload chambers.