Abstract: A two-agent type dental adhesive composition includes a first agent; and a second agent. The first agent includes a (meth)acrylate compound having an acid group, a (meth)acrylate compound having no acid group, water, and a water-soluble organic solvent. The second agent includes a multifunctional (meth)acrylate compound, a photopolymerization initiator, and a filler of 0 to 50 mass %. Both the first agent and the second agent substantially do not contain 2-hydroxyethyl methacrylate.

Abstract: An apparatus for liquid chromatography which detects ingredients by an electrolytic device, wherein the apparatus can detect many kinds of substances in high sensitivity by making possible to apply a wider range of electrolyzing voltage than former apparatus. The electrolytic device provided in the apparatus for liquid chromatography has a working electrode which is formed an electrically conductive diamond film on at least one side surface of an electrically conductive plate, a spacer plate of electrical insulating material which is 0.05 to 0.5 mm in thickness and has a hole, and a counter electrode which is facing to the diamond-formed surface of the working electrode while being put the spacer between the electrodes. Furthermore, an eluate inlet hole, an eluate outlet hole and a reference electrode are opened to a cavity formed by the hole of the spacer plate, and the eluate in the electrolytic device is pressurized to 1.0 to 15.0 kg/cm2.

Abstract: A charging control apparatus for controlling a charging current supplied to a secondary battery has a pre-charge secondary battery status decision circuit for determining a discharged status of the secondary battery when it starts being charged, and a charging pattern control circuit for controlling the charging current supplied to the secondary battery at progressively smaller constant stepwise levels according to a charging pattern based on the discharged status of the secondary battery as determined by the pre-charge secondary battery status decision circuit each time the voltage across the secondary battery reaches a predetermined value, and charging the secondary battery with the charging current which is controlled at the progressively smaller constant stepwise levels.