Abstract: A work vehicle comprises a vehicle body, a work implement, a track frame, a sprocket, an idler, a plurality of small track rollers, and first and second large track rollers. The track frame comprises opposite first and second end sections, and opposite upper and lower sections. The sprocket and idler are rotatably mounted to the first and second end sections, respectively, to movably support an endless track. The small and large track rollers are rotatably mounted to the lower section between the sprocket and idler and are unmovable in vertical and horizontal directions of the track frame. The small track rollers are all disposed between the first and second large track rollers. Each small track roller defines a respective small track rolling surface having a respective first tread diameter and each large track roller defines a respective large track rolling surface having a respective second tread diameter greater than each respective first tread diameter.

Abstract: A work vehicle comprises a vehicle body, a work implement, a track frame, a sprocket, an idler, a plurality of small track rollers, and first and second large track rollers. The track frame comprises opposite first and second end sections, and opposite upper and lower sections. The sprocket and idler are rotatably mounted to the first and second end sections, respectively, to movably support an endless track. The small and large track rollers are rotatably mounted to the lower section between the sprocket and idler and are unmovable in vertical and horizontal directions of the track frame. The small track rollers are all disposed between the first and second large track rollers. Each small track roller defines a respective small track rolling surface having a respective first tread diameter and each large track roller defines a respective large track rolling surface having a respective second tread diameter greater than each respective first tread diameter.

Abstract: Sales promotion assisting systems are disclosed. Such systems include a sales promotion assisting system in which specific incentive is retrieved by passing a portable terminal or the like over a predetermined terminal installed in a store such as an eating and drinking establishment. An incentive can be exchanged for an item or the like of application software such as a game, which can lead to sales promotion.

Abstract: A seat cushion is disclosed which comprises a rectangularly extending frame having opposed side portions; a flat sheet member arranged within a space defined by the rectangular frame; connecting devices for connecting each side portion of the flat sheet member to one of the opposed side portions of the frame; a plastic panel member having side portions raised, the plastic member being disposed on the flat sheet member leaving between each of the raised side portions and corresponding one of the opposed side portions of the frame a generally wedge-shaped clearance; a cushion structure tightly mounted on the plastic panel in such a manner that side portions of the cushion structure are raised by the raised side portions of the plastic panel; and two cushion pad units respectively received in the wedge-shaped clearances defined below the raised side portions of the plastic panel member.

Abstract: 7-[.beta.-Aminoacylamino]-3-substituted-3-cephem-4-carboxylic acid derivatives of the formula: ##STR1## wherein R.sub.1 is hydrogen, lower alkyl, lower alkenyl, aryl or a heterocyclic group,R.sub.2 is hydrogen or lower alkyl, orR.sub.1 and R.sub.2 mean, taken together with the adjacent carbon atoms, cycloalkyl or cycloalkenyl,R.sub.3 is hydrogen, lower alkylthio or a hetero cyclic-thio group, andM is hydrogen or a nontoxic, pharmaceutically acceptable cation,processes for the preparation of the same and composition thereof. These compounds are useful as antibacterial agents.

Abstract: Purification of Fr-1923 antibiotic substance by treatment with a macroporous non-ionic adsorption resin such as styrene-divinyl benzene copolymer or acrylic ester polymer.

Abstract: 7-[.beta.-Aminoacylamino]-3-substituted-3-cephem-4-carboxylic acid derivatives of the formula: ##STR1## wherein R.sub.1 is hydrogen, lower alkyl, lower alkenyl, aryl or a heterocyclic group,R.sub.2 is hydrogen or lower alkyl, orR.sub.1 and R.sub.2 mean, taken together with the adjacent carbon atom, cycloalkyl or cycloalkenyl,R.sub.3 is hydrogen, lower alkylthio or a hetero cyclic-thio group, andM is hydrogen or a nontoxic, pharmaceutically acceptable cation,Processes for the preparation of the same and composition thereof. These compounds are useful as antibacterial agents.

Abstract: A process for the purification of bicyclomycin by treating a solution thereof with a macroporous nonionic adsorption resin.