Abstract: A concave section such as an extension section, a cutting section, and a notch section is provided to receive a lid of a float valve in an inside of outer tube assembly of a drill string. Thus, when the float valve is provided for the drill string, it is made possible to collect a core with a larger diameter by a thinner drill string, by expanding the inner diameter of the drill string.

Abstract: A concave section such as an extension section, a cutting section, and a notch section is provided to receive a lid of a float valve in an inside of outer tube assembly of a drill string. Thus, when the float valve is provided for the drill string, it is made possible to collect a core with a larger diameter by a thinner drill string, by expanding the inner diameter of the drill string.

Abstract: An article of clothing has a main body formed of high-tightness, main-body knitting fabric made of power net. The article of clothing includes front and back support pieces disposed around the waist and having no elasticity in a longitudinal direction thereof. The front support pieces are sewn to a front body at positions inside the left and right ilia of the abdominal pelvis. The back support pieces are sewn to a back body at left and right positions near the sacrum of the pelvis in central hip portions. Side waist pieces disposed between the front and back support pieces are formed by sewing high-tightness, net-like knitting fabric to the main-body knitting fabric at the top edge while leaving the bottom edge unsewn. The article of clothing has a pant-like shape with left and right leg parts that can be tightly fitted around the thighs.

Abstract: An article of clothing has a main body formed of high-tightness, main-body knitting fabric made of power net. The article of clothing includes front and back support pieces disposed around the waist and having no elasticity in a longitudinal direction thereof. The front support pieces are sewn to a front body at positions inside the left and right ilia of the abdominal pelvis. The back support pieces are sewn to a back body at left and right positions near the sacrum of the pelvis in central hip portions. Side waist pieces disposed between the front and back support pieces are formed by sewing high-tightness, net-like knitting fabric to the main-body knitting fabric at the top edge while leaving the bottom edge unsewn. The article of clothing has a pant-like shape with left and right leg parts that can be tightly fitted around the thighs.

Abstract: Disclosed herein are a crustal core sampler, by which a crustal core sample can be cored in a state coated with a flow-able coating material free of any contamination, and a method of coring a core sample using this crustal core sampler. The crustal core sampler comprises a drilling mechanism and a barrel, wherein the barrel is equipped with a flow-able coating material-ejecting mechanism, and a columnar crustal core portion is coated with a flow-able coating material. Alternatively, the crustal core sampler is constructed by a drill pipe and an inner barrel, wherein the inner barrel is equipped with an inner barrel body, a core elevator, a channel-forming member for forming a flow-able coating material-running channel and flow-able coating material-ejecting openings, and a columnar crustal core portion is coated with a flow-able coating material.