Abstract:
PROBLEM TO BE SOLVED: To provide a fish-shelter block which protects algae, serving as a habitat for fish, from echinoderm feeding damage and promotes their growth. SOLUTION: The fish-shelter block comprises a base part 2 placed on the ocean floor and an algae-growing part 4 supported by a columnar support part 3 on the base part 2. The algae-growing part 4 retains a floating state undersea, leaving an echnoderm-preventing gap part S between the top surface 2a of the base part. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide an algal reef block which has no fear of bite damage by fishes, raises and breeds algae and is useful also as a fish-breeding reef. SOLUTION: The algal reef has constitution that an alga attaching part 4 is arranged in an inside space part 2 in an open state at least on the top face in a frame body 1 and a net part 3 for isolating fishes which exists at a part higher than the growth point part of algae above the alga attaching part 4, crosses the inside space part 2, has a mesh of proper size to pass grown leaf parts of algae but to prevent fishes from entering is installed. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a galvanized prestressing steel strand with low relaxation, of which the galvanized layer has no streak or unbalanced thickness peculiar to a strand, has strengthened adhesion to concrete and has resistance to drawing, and of which each strand and the whole strand has superior corrosion resistance, and provide a manufacturing method therefor, and a manufacturing apparatus. SOLUTION: This galvanized prestressing steel strand has a galvanized layer 3 with a coating weight of 70-700 g/m on each strand 2 having a desired strand shape, which is formed by electroplating, while the strand is slightly loosened and is tightened again into the above strand shape.
Abstract translation:要解决的问题:为了提供一种具有低松弛度的镀锌预应力钢丝绳,其中镀锌层没有条纹特有的条纹或不平衡的厚度,具有增强的对混凝土的粘附性,并且具有抗拉伸性,并且其中每股和 整股具有优异的耐腐蚀性,并提供其制造方法和制造装置。 解决方案:该镀锌预应力钢绞线具有镀锌层3,其镀层重量为70-700g / m 2,每根绞线2具有通过电镀形成的所需绞线形状,而绞合线略微松动,并且是 再次收紧到上述股线的形状。