Abstract: Seven novel antibiotic substances can be produced by cultivation of a microbial strain which has been isolated from a soil sample and which is designated as Microbispora sp. A 34030 (deposited under an access number FERM BP-10505 in terms of Budapest Treaty). These seven antibiotic substances are named as bispolide A1, bispolide A2, bispolide A3, bispolide B1, bispolide B2a, bispolide B2b and bispolide B3, respectively. These bispolides are each novel compounds which have a chemical structure as collectively represented by the general formula (III) shown below: These bispolides have each a high antibacterial activity against a variety of bacteria, particularly Gram-positive bacteria and their antibiotic-resistant strains, and hence these bispolides each are effective and useful for therapeutically treating bacterial infections of Gram-positive bacteria in humans and animals.

Abstract: A target tubular member with flange, such as a bumper stay, has a flange having an outer diameter larger than the diameter of an axial section and is formed by electromagnetic forming without excessive expansion. The tubular member with flange includes an axial member made of a tubular aluminum alloy extrudate and a flange member joined to an end of the axial member. The axial member has an end flange being integrated at its end and having an area smaller than that of the flange member. The flange member has a hole, and a cylindrical hole flange at the edge of the hole. The axial member fits in the hole of the flange member, the end flange is in intimate contact with the flange member, and the outer periphery of a small-diameter portion of the axial member is in intimate contact with the inner periphery of the hole flange. The hole flange is held between the end flange and a protrusion.

Abstract: The bumper stay includes a cylindrical shaft member fit in to a hole of a bumper reinforce, a cylindrical reinforcing member fit in to the outer periphery of the shaft member in the rear side of the bumper reinforce, and a mounting flange member fit in to the outer periphery of the shaft member in its rear end. The shaft member is enlarged by electromagnetic forming and is tightly adhered to the inner peripheral surface of the hole formed in the bumper reinforce, the inner peripheral surface of the reinforcing member, and the inner peripheral surface of the hole flange formed in the mounting flange member, thereby these are joined with each other. Thin aluminum alloy extruded material can be used for the shaft member.

Abstract: Seven novel antibiotic substances could be produced by cultivation of a microbial strain which has been isolated from a soil sample and which is designated as Microbispora sp. A 34030 (deposited under an access number FERM BP-10505 in terms of Budapest Treaty). These seven antibiotic substances are named as bispolide A1, bispolide A2, bispolide A3, bispolide B1, bispolide B2a, bispolide B2b and bispolide B3, respectively. These bispolides are each novel compounds which have a chemical structure as collectively represented by the general formula (III) shown below. These bispolides have each a high antibacterial activity against a variety of bacteria, particularly Gram-positive bacteria and their antibiotic-resistant strains, and hence these bispolides each are effective and useful for therapeutically treating bacterial infections of Gram-positive bacteria in human and animals.

Abstract: A target tubular member with flange, such as a bumper stay, has a flange having an outer diameter larger than the diameter of an axial section and is formed by electromagnetic forming without excessive expansion. The tubular member with flange includes an axial member made of a tubular aluminum alloy extrudate and a flange member joined to an end of the axial member. The axial member has an end flange being integrated at its end and having an area smaller than that of the flange member. The flange member has a hole, and a cylindrical hole flange at the edge of the hole. The axial member fits in the hole of the flange member, the end flange is in intimate contact with the flange member, and the outer periphery of a small-diameter portion of the axial member is in intimate contact with the inner periphery of the hole flange. The hole flange is held between the end flange and a protrusion.

Abstract: A target tubular member with flange, such as a bumper stay, has a flange having an outer diameter larger than the diameter of an axial section and is formed by electromagnetic forming without excessive expansion. The tubular member with flange includes an axial member made of a tubular aluminum alloy extrudate and a flange member joined to an end of the axial member. The axial member has an end flange being integrated at its end and having an area smaller than that of the flange member. The flange member has a hole, and a cylindrical hole flange at the edge of the hole. The axial member fits in the hole of the flange member, the end flange is in intimate contact with the flange member, and the outer periphery of a small-diameter portion of the axial member is in intimate contact with the inner periphery of the hole flange. The hole flange is held between the end flange and a protrusion.

Abstract: The bumper stay includes a cylindrical shaft member fit in to a hole of a bumper reinforce, a cylindrical reinforcing member fit in to the outer periphery of the shaft member in the rear side of the bumper reinforce, and a mounting flange member fit in to the outer periphery of the shaft member in its rear end. The shaft member is enlarged by electromagnetic forming and is tightly adhered to the inner peripheral surface of the hole formed in the bumper reinforce, the inner peripheral surface of the reinforcing member, and the inner peripheral surface of the hole flange formed in the mounting flange member, thereby these are joined with each other. Thin aluminum alloy extruded material can be used for the shaft member.

Abstract: A target tubular member with flange, such as a bumper stay, has a flange having an outer diameter larger than the diameter of an axial section and is formed by electromagnetic forming without excessive expansion. The tubular member with flange includes an axial member made of a tubular aluminum alloy extrudate and a flange member joined to an end of the axial member. The axial member has an end flange being integrated at its end and having an area smaller than that of the flange member. The flange member has a hole, and a cylindrical hole flange at the edge of the hole. The axial member fits in the hole of the flange member, the end flange is in intimate contact with the flange member, and the outer periphery of a small-diameter portion of the axial member is in intimate contact with the inner periphery of the hole flange. The hole flange is held between the end flange and a protrusion.

Abstract: A lightweight car body energy absorber made of Al alloy which provides a high energy absorption performance. The car body energy absorber comprises a hollow shape with a rectangular sectional profile and a reinforcing shape attached to the front face of the collision plane of the hollow shape, where the hollow shape and the reinforcing shape are aluminum alloy extruded shapes. The reinforcing shape has a hat-shaped open sectional profile, which is composed of a collision wall almost parallel to the collision plane of the hollow shape, plural mutually parallel horizontal ribs which support the collision wall, and vertical flanges provided at the tips of these ribs. The reinforcing shape is joined to the collision plane of the hollow shape through the vertical flanges.

Abstract: A lightweight car body energy absorber made of Al alloy which provides a high energy absorption performance. The car body energy absorber comprises a hollow shape 1 with a rectangular sectional profile and a reinforcing shape 2 attached to the front face of the collision plane of the hollow shape, where the hollow shape 1 and the reinforcing shape 2 are aluminum alloy extruded shapes. The reinforcing shape 2 has a hat-shaped open sectional profile, which is composed of a collision wall 6 almost parallel to the collision plane of the hollow shape 1, plural mutually parallel horizontal ribs 7a, 7b and 7c which support the collision wall 6, and vertical flanges 8a, 8b and 8c provided at the tips of these ribs. It is joined to the collision plane of the hollow shape 1 through the vertical flanges 8a, 8b and 8c.