Abstract: Provided is a test plate with which a test can be carried out in a simple manner and problems that may otherwise occur along with the lapse of time hardly occur. This invention provides a nematode trap plate (1) including: a container (10); and a solid medium (11) formed in the container (10), the solid medium (11) allowing nematodes to move over its surface, and the surface of the solid medium (11) having at least one fall-in cavity (2a) for catching nematodes.

Abstract: A process for remedying polluted soil which comprises the steps of injecting a liquid agent containing a microorganism into the polluted soil, and injecting a gas into a region wherein the water content of the soil became 0.6 or more times its saturation water content after the injection of the liquid agent. Using this method bioremediation of contaminated soil can be economically and efficiently carried out.

Abstract: A process for producing an anthracycline derivative represented by the general formula: ##STR1## where R.sup.1 is an acyl group, each of X.sup.1 and X.sup.2 is a hydrogen atom, a methoxy group, a hydroxyl group, a halogen atom or a lower alkyl group, each of Y.sup.1 and Y.sup.2 is a hydrogen atom, an alkoxy group or a hydroxyl group, and Z is a hydrogen atom or a protected hydroxyl group, which comprises reacting an anthracyclinone derivative represented by the general formula: ##STR2## where R is a hydrogen atom or a trialkylsilyl group, and X.sup.1, X.sup.2, Y.sup.1, Y.sup.2 and Z are as defined above, with a 1-acyl-sugar derivative represented by the general formula: ##STR3## where R.sup.2 is an acyl group and R.sup.1 is as defined above, in the presence of a silyl sulfonic acid derivative represented by the general formula:R.sup.5 R.sup.4 R.sup.3 SiOSO.sub.2 A (IV)where each of R.sup.3, R.sup.4 and R.sup.