Abstract: A floating-oil recovery device includes: a bubble-curtain generation mechanism configured to discharge air into water to generate a bubble curtain in the water so as to increase a thickness of a film of floating oil while regulating spread of the floating oil; and an ejector configured to recover an oil-water mixed fluid having the floating oil and the water mixed with each other by jetting high-velocity water toward the film of floating oil enclosed with the bubble curtain to destroy the film of floating oil.

Abstract: An unmanned drifting substance monitoring buoy (10) is thrown into a water area where a drifting substance is present, thereby tracking and monitoring the drifting substance. The unmanned drifting substance monitoring buoy (10) detects, by a detecting section, a relative location of the drifting substance on the water surface with respect to the unmanned drifting substance monitoring buoy (10), and measures, by a measuring section, directions and strengths of a wind and a tidal current. Then, the unmanned drifting substance monitoring buoy (10) tracks the drifting substance by adjusting, based on the relative location of the drifting substance detected by the detecting section and on the directions and the strengths of the wind and the tidal current measured by the measuring section, a surface area and a direction of a sail (13) by an adjusting section.

Abstract: An unmanned drifting substance monitoring buoy (10) is thrown into a water area where a drifting substance is present, thereby tracking and monitoring the drifting substance. The unmanned drifting substance monitoring buoy (10) detects, by a detecting section, a relative location of the drifting substance on the water surface with respect to the unmanned drifting substance monitoring buoy (10), and measures, by a measuring section, directions and strengths of a wind and a tidal current. Then, the unmanned drifting substance monitoring buoy (10) tracks the drifting substance by adjusting, based on the relative location of the drifting substance detected by the detecting section and on the directions and the strengths of the wind and the tidal current measured by the measuring section, a surface area and a direction of a sail (13) by an adjusting section.

Abstract: Cell-associated glucosyltransferase of S. mutans serotypes c, e or f producing dental caries was isolated and purified and its characteristics as an enzyme were revealed. Furthermore, an antibody against said enzyme was prepared from eggs of the hens immunized with said enzyme. Since this antibody effectively prevents adherence of the aforementioned S. mutans to tooth surfaces, it is useful as an effective component for a dental caries prophylactic composition.

Abstract: Cell-associated glycosyltranferase of S. mutans serotypes c, e or f producing dental caries was isolated and purified and its characteristics as an enzyme were revealed. Furthermore, an antibody against the enzyme was prepared from eggs of the hens immunized with the enzyme. Since this antibody effectively prevents adherence of the aforementioned S. mutans to tooth surfaces, it is useful as an effective component for a dental caries prophylactic composition.

Abstract: A sweetening compound is recovered from Stevia rebaudiana plant material in the form of colorless crystals having 450 times the sweetness of sucrose. Sweetened products for oral ingestion are provided by admixing the sweetening compound with a foodstuff or a pharmaceutical. The sweetening compound is recovered from the plant material by extraction with water, concentration, extraction with an alkanol, chromatography, and collection of fractions rich in the compound, preferably followed by concentration of the rich fractions and recrystallization of the product.

Abstract: Golf glove comprises body including front palm, back and finger portions with wrist encircling bottom edge. Notch in back portion of body extends from bottom edge toward finger portion. Band material is secured to wrist encircling bottom edge and band terminates at boundary of notch. Band extends along bottom of front body portion slightly below palm bulge thereof, and each end of band extends to back body portion at oblique angle in direction toward finger portion so that projected ends of band cross each other at back body portion. Fastener members are secured to opposite sides of notch for closing it.