Abstract: A natural invasion promoting method that is environmentally friendly, easy to carry out, can cope with a wide range of areas and inclined surfaces, achieves efficient natural invasion, and can satisfactorily promote greening on a soil surface of interest, and a spraying material used in the method are provided. A natural invasion promoting method including: spraying a spraying material containing live algae on a soil surface; breeding the live algae; and also directly or indirectly catching flying seeds or spores by a tacky substance secreted on surfaces of the live algae or a catching structure composed of the live algae to promote greening on the soil surface.

Abstract: An information processing device includes a process target item extraction unit that refers to a database that stores keyword sets, each of the keyword sets being selected preliminarily as a combination of a plurality of search keywords unlikely to be simultaneously assigned to an identical item, performs item search on a database that stores item information using each of the search keyword belonging to one of the keyword sets, and extracts a process target item an appropriateness determination unit that determine for the extracted process target item, the determination determining a search keyword that should not be assigned to the process target item as an inappropriate keyword, among respective search keywords of the keyword set used for the extraction of the process target item and an inappropriate keyword handling process unit performs an inappropriate keyword handling process to improve a search result of item search.

Abstract: An information processing device includes a process target item extraction unit that refers to a database that stores keyword sets, each of the keyword sets being selected preliminarily as a combination of a plurality of search keywords unlikely to be simultaneously assigned to an identical item, performs item search on a database that stores item information using each of the search keyword belonging to one of the keyword sets, and extracts a process target item an appropriateness determination unit that determine for the extracted process target item, the determination determining a search keyword that should not be assigned to the process target item as an inappropriate keyword, among respective search keywords of the keyword set used for the extraction of the process target item and an inappropriate keyword handling process unit performs an inappropriate keyword handling process to improve a search result of item search.

Abstract: A herbicide exhibiting high herbicidal activity against a variety of weeds and being highly safe for useful crops can be obtained through the use of a heterocyclic compound represented by the following general formula (I): ##STR1## wherein R represents a group represented by the following formula: ##STR2## X represents an oxygen atom or a sulfur atom; R.sup.1 represents a halogen atom or a lower alkyl group; R.sup.2 represents a hydrogen atom or a methyl group; R.sup.3 represents a halogen atom, a lower alkyl group, a lower haloalkyl group, a lower alkoxy group, a lower alkylthio group, a cyano group or --COOR.sup.4 (R.sup.4 is a lower alkyl group, a lower alkoxyalkyl group or a tetrahydrofurfuryl group); m is 0, 1 or 2 and n is 0, 1, 2 or 3.

Abstract: An insecticide having high insecticidal activities against various harmful insects, which is low in toxicity to warm-blooded animals and fishes to be used safely. The insecticide comprises a derivative of 2,3-dihydro-2,2-dimethylbenzofuran-7-yl N-(substituted sulfonylcarbamoyl)-N-methylcarbamate represented by the general formula: ##STR1## wherein X stands for a halogen atom; --NHR where R is an alkyl group, cycloalkyl group, lower alkenyl group, lower alkynyl group or ##STR2## (where Z is a hydrogen atom, halogen atom, alkyl group, alkoxy group or alkoxycarbonyl group), aralkyl group, a 5-member or 6-member heterocyclic group, or an alkoxy group.

Abstract: 1,2-benzoisothiazol-3(2H)-one, 1,1-dioxide, ion(1-),2-hydroxy-N,N,N-trimethyl-ethanaminium represented by the following formula (I): ##STR1## is found to have great utility as an effective component in plant protection agents for control of fungi and bacteria. By the use of the compound, diseases or blights of plants can be effectively prevented.

Abstract: An elevating apparatus for a working vehicle includes separate front lifting and rear lifting mechanisms that can be elevated by hydraulic cylinders, a feedback rod arranged between a link arm of one of the lifting mechanisms and a hydraulic pressure control apparatus for controlling the hydraulic cylinders. A change-over lever selects the front lifting mechanism or the rear lifting mechanism, and an elevating lever controls elevation of the lifting mechanisms. When one of the lifting mechanisms is selected and elevated by operation of the change-over lever, the elevating lever is operated normally without causing abutment between an adjuster member attached to the feedback rod that is interactive with the elevating lever, and an interactive member of the elevating lever. A return mechanism between the change-over lever and the elevating lever enables the elevating lever to be returned to the neutral position when selecting one of the front and rear lifting mechanisms.

Abstract: A process for producing polyhalogenated phenol by mixing a polyhalogenated aniline with an aqueous sulfuric acid solution to obtain a suspension of fine particles of polyhalogenated aniline sulfate having the particle size of 50 .mu. or less, diazotizing the polyhalogenated aniline sulfate to obtain polyhalogenate benzenediazonium sulfate, hydrolyzing the resulting benzenediazonium sulfate by heating it as such, recycling to the diazotization step the aqueous sulfuric acid solution from which the desired polyhalogenated phenol has been separated.