Abstract: A display apparatus having a capacitive load (Cij), clamp circuits (103, 104) for clamping the potential of the capacitive load to high and low levels, power recovering circuits (103, 104) including coils for recovering power from the capacitive load and supplying the recovered power to the capacitive load, a display load rate determining part (111) for determining a display load rate, and a control part (112) is provided. When the determined display load rate is smaller than a first threshold value, the control part does not use the power recovering circuits but uses the clamp circuits to control the potential of the capacitive load. When the determined display load rate is larger than the first threshold value, the control part uses the power recovering circuits and clamp circuits to control the potential of the capacitive load.

Abstract: A plasma display panel capable of reducing a peak value of a sustain discharge current without generating luminance nonuniformity is provided. The plasma display panel comprises: a plurality of first, second, and third electrodes disposed to be adjacent to each other and extending in a first direction, the third electrodes being provided between the first electrodes and the second electrodes where the discharge is repeated; and a dielectric layer covering the electrodes, wherein the space between the first electrode and the second electrode is approximately constant over an entire display area width of the panel, and a space between the third electrode and the first and second electrodes is varied depending on positions in the entire display area width of the panel in a first direction.

Abstract: A thiazolidine compound represented by the following general formula I or its acid addition salt ##STR1## where X is --CH.dbd. or --N.dbd., Y is ##STR2## (where R is a hydrogen atom, a methyl group or an ethyl group) or --CH.sub.2 CH.sub.2 --, Ar is a phenyl group which may be substituted by halogen, lower alkyl, lower alkoxy, phenyl or trifluoromethyl, a thienyl group or a naphthyl group, R.sup.1 is a hydrogen atom, a straight chain or branched chain alkyl group having from 1 to 10 carbon atoms or a phenyl group which may be substituted, R.sup.2 is a hydrogen atom, a straight chain or branched chain alkyl group having from 1 to 10 carbon atoms, a phenyl group which may be substituted, a lower alkoxycarbonyl group, a lower alkylcarbamoyl group or a lower alkenylcarbamoyl group, and R.sup.3 is a hydrogen atom, a lower alkyl group, a lower acyl group, a lower alkylcarbamoyl group, a lower alkylthiocarbamoyl group or a phenylcarbamoyl group. The compound is useful as fungicide.

Abstract: Chemicals containing an effective amount of homopolymers of dialkylaminoalkyl acrylate derivatives or dialkylaminoalkyl methacrylate derivatives or copolymers of such derivatives with ethylenically unsaturated monomers copolymerizable therewith. The chemicals exhibit a remarkable effect of preventing agricultural plants from being infected with plant virus diseases. A method for controlling the plant virus diseases is also described.