摘要:
A device for controlling a propagation direction of noise, which is preferably associated with a sound insulating wall to significantly improve its sound reducing effect of alleviating noise emitted from a noise source such as a railroad, highway and the like on which an electric car and automobiles run. The device comprises a hollow structural body composed of a plurality of elongated vertical hollow passages arranged at right angles to a substrate and spaced apart from each other by means of partition walls. The upper noise inlet side surface of the hollow passages face a propagation direction of noise emitted from the noise source and serve to refract and lag in phase the noise passed therethrough, thereby producing a sound reducing region located intermediate between a direct sound propagation and the refracted sound propagation. In one embodiment, a pair of hollow structural bodies are arranged in opposition to each other to form an arch type device. In another embodiment, the hollow structural body may be provided at its noise inlet or outlet side surface with an extension of the hollow passages.
摘要:
A device for controlling a propagation direction of noise which is preferably associated with a sound insulating wall to significantly improve its sound reducing effect of alleviating noise emitted from a noise source such as a railroad, highway and the like on which an electric car and automobiles run. The device comprises a hollow structural body composed of a plurality of elongate hollow passages superimposed one upon the other and spaced apart from each other. The passages are arranged in a propagation direction of noise emitted from the noise source and serve to refract and lag in phase the noise passed therethrough, thereby producing a sound reducing region located intermediate between a direct propagation sound and the refraction propagation sound.
摘要:
A noise control device which produces behind it an enlarged sound reducing region is disclosed. The device comprises a hollow structural body composed of a plurality of elongate hollow passages which are different in length and constructed such that the passage length is made the longest at a substantially center part in a vertical direction and is made gradually shorter from the center part toward upper and lower edges of the hollow structural body. The upper and lower edges allow direct propagation sound emitted from a noise source to pass thereover and therethrough.
摘要:
A perlite sound absorbing plate and a sound insulating wall constructed by arranging a number of said plates side by side and by assembling together into one integral body are disclosed. The plate is composed of a mixture including 1,000 cm.sup.3 by bulk volume of formed perlite particles each having a diameter of 0.1 to 7.0 mm, 100 to 140 g of cement, liquid rubber latex containing 5 to 20 g of solid ingredients and a suitable amount of water and produced by press molding with a compression ratio of 1.10 to 1.30. The wall is constructed by assembling a number of said plates each provided with a side groove with the aid of supporting columns and reinforcing plates, each having a ridge adapted to be engaged with the side groove of said plate.
摘要:
A sound absorbing body which can effectively be utilized as an exterior sound absorbing wall or an interior wall of a house is disclosed. The sound absorbing body comprises a number of sound absorbing cavities inclined at an angle .alpha. which is smaller than 80.degree. with respect to a transverse horizontal sectional plane of the body, the sound absorbing cavities being opened at the sound incident surface.
摘要:
A polypeptide obtainable by inducement under hypoxic conditions having a sequence comprising:(a) the amino acid sequence of SEQ ID NO:1 or 3 or a fragment thereof; (b) an amino acid sequence encoded by the nucleotide sequence of SEQ ID NO: 2 or 4 or a fragment thereof; or (c) an amino acid sequence resulting from deletion, addition, insertion or substitution of one or more amino acids in the amino acid sequence of SEQ ID NO:1 or 3; a polynucleotide encoding the above polypeptide or the fragment thereof useful for producing the above polypeptide by a biotechnological technique; and an antibody or fragment thereof specifically binding the above polypeptide.
摘要翻译:通过在缺氧条件下诱导获得的多肽,其具有包含以下序列的序列:(a)SEQ ID NO:1或3的氨基酸序列或其片段; (b)由SEQ ID NO:2或4的核苷酸序列或其片段编码的氨基酸序列; 或(c)由SEQ ID NO:1或3的氨基酸序列中的一个或多个氨基酸的缺失,添加,插入或取代产生的氨基酸序列; 编码上述多肽或其片段的多核苷酸可用于通过生物技术生产上述多肽; 以及特异性结合上述多肽的抗体或其片段。
摘要:
A polypeptide obtainable by inducement under hypoxic conditions having a sequence comprising: (a) the amino acid sequence of SEQ ID NO:1 or 3 or a fragment thereof; (b) an amino acid sequence encoded by the nucleotide sequence of SEQ ID NO: 2 or 4 or a fragment thereof; or (c) an amino acid sequence resulting from deletion, addition, insertion or substitution of one or more amino acids in the amino acid sequence of SEQ ID NO:1 or 3; a polynucleotide encoding the above polypeptide or the fragment thereof useful for producing the above polypeptide by a biotechnological technique; and an antibody or fragment thereof specifically binding the above polypeptide.
摘要翻译:通过在缺氧条件下诱导获得的多肽,其具有包含以下序列的序列:(a)SEQ ID NO:1或3的氨基酸序列或其片段; (b)由SEQ ID NO:2或4的核苷酸序列或其片段编码的氨基酸序列; 或(c)由SEQ ID NO:1或3的氨基酸序列中的一个或多个氨基酸的缺失,添加,插入或取代产生的氨基酸序列; 编码上述多肽或其片段的多核苷酸可用于通过生物技术生产上述多肽; 以及特异性结合上述多肽的抗体或其片段。