摘要:
A tip cap for a turbine blade. The tip cap may include a HS-188 sheet material with a thickness of less than about 0.079 inches (about 2 millimeters) and a number of holes positioned in the sheet material.
摘要:
A method and apparatus for a rotor assembly for gas turbine engine are provided. A first rotor blade including an airfoil, a platform, a shank, an internal cavity, and a dovetail is provided, wherein the airfoil extends radially outward from the platform, which includes a radially outer surface and a radially inner surface, the shank extends radially inward from the platform, and the dovetail extends from the shank, such that the internal cavity is defined by the airfoil, the platform, the shank, and the dovetail. The first rotor blade is coupled to a rotor shaft such that during engine operation, cooling air is channeled from the cavity through an impingement cooling circuit for impingement cooling the first rotor blade platform radially inner surface, and a second rotor blade is coupled to the rotor shaft such that a platform gap is defined between the first and second rotor blade platforms.
摘要:
A system in a turbine engine for preventing wear on a tip shroud of a turbine blade that includes a pocket formed in a contact surface of the tip shroud and a plug that fits within the pocket and has a durable outer surface. The durable outer surface may include a cobalt-based hardfacing powder. The pocket may be machined out of the contact surface, and the plug may include a plug of predetermined size that fits snugly into the pocket. In some embodiments, the durable outer surface may substantially align with the contact surface after the plug is fitted into the pocket. In other embodiments, the durable outer surface may remain slightly raised from the contact surface after the plug has been fitted into the pocket.
摘要:
A method facilitates assembling a rotor assembly for gas turbine engine. The method includes providing a first rotor blade including an airfoil, a platform, a shank, an internal cavity, and a dovetail, wherein the airfoil extends radially outward from the platform, which includes a radially outer surface and a radially inner surface, the shank extends radially inward from the platform, and the dovetail extends from the shank, such that the internal cavity is defined by the airfoil, the platform, the shank, and the dovetail. The method also includes coupling the first rotor blade to a rotor shaft such that during engine operation, cooling air is channeled from the cavity through an impingement cooling circuit for impingement cooling the first rotor blade platform radially inner surface, and coupling a second rotor blade to the rotor shaft such that a platform gap is defined between the first and second rotor blade platforms.
摘要:
Device for bringing into register a tool mounted on a rotary cylinder for processing products in sheet form, such as a tool for cutting out, creasing, or printing sheets of cardboard in a machine for making and printing corrugated cardboard boxes, comprising a coder (22) providing information representing the theoretical advance of the sheets (10, 11), a coder (23) providing information representing the angle of adjustment given to the tool holder (1), a detector (20) of the passage of a reference mark (15) on the sheet (11) to a point situated upstream of the tool holder, a detector (36) of the theoretical passage of this reference mark at a selected distance slightly downstream of the first detector (20), and a computer (33) supplying correction commands to the correction motor (8) of the tool holder in order that the tool will arrive in phase with the incident sheet (11).
摘要:
A genetic means of determining whether a female subject produces “pregnancy competent” oocytes is provided. The means comprises detecting the level of expression of one or more genes that are expressed at characteristic levels (upregulated or downregulated) in cumulus cells derived from pregnancy competent oocytes. This characteristic gene expression level, or pattern referred to herein as the “pregnancy signature”, also can be used to identify subjects with underlying conditions that impair or prevent the development of a viable pregnancy, e.g., pre-menopausal condition, other hormonal dysfunction, ovarian dysfunction, ovarian cyst, cancer or other cell proliferation disorder, autoimmune disease and the like. Microarrays containing “pregnancy signature” genes or corresponding polypeptides provide another preferred aspect of the invention. Still further, the subject invention can be used to derive animal models, e.g., non-human primate animal models, for the evaluation of the efficacy of putative female fertility treatments.
摘要:
A genetic means of determining whether a female subject produces “pregnancy competent” oocytes is provided. The means comprises detecting the level of expression of one or more genes that are expressed at characteristic levels (upregulated or downregulated) in cumulus cells derived from pregnancy competent oocytes. This characteristic gene expression level, or pattern referred to herein as the “pregnancy signature”, also can be used to identify subjects with underlying conditions that impair or prevent the development of a viable pregnancy, e.g., pre-menopausal condition, other hormonal dysfunction, ovarian dysfunction, ovarian cyst, cancer or other cell proliferation disorder, autoimmune disease and the like. Microarrays containing “pregnancy signature” genes or corresponding polypeptides provide another preferred aspect of the invention. Still further, the subject invention can be used to derive animal models, e.g., non-human primate animal models, for the evaluation of the efficacy of putative female fertility treatments.
摘要:
A genetic means of determining whether a female subject produces “pregnancy competent” oocytes is provided. The means comprises detecting the level of expression of one or more genes that are expressed at characteristic levels (upregulated or downregulated) in cumulus cells derived from pregnancy competent oocytes. This characteristic gene expression level, or pattern referred to herein as the “pregnancy signature”, also can be used to identify subjects with underlying conditions that impair or prevent the development of a viable pregnancy, e.g., pre-menopausal condition, other hormonal dysfunction, ovarian dysfunction, ovarian cyst, cancer or other cell proliferation disorder, autoimmune disease and the like. Microarrays containing “pregnancy signature” genes or corresponding polypeptides provide another preferred aspect of the invention. Still further, the subject invention can be used to derive animal models, e.g., non-human primate animal models, for the evaluation of the efficacy of putative female fertility treatments.
摘要:
A tip cap for a turbine blade. The tip cap may include a HS-188 sheet material with a thickness of less than about 0.079 inches (about 2 millimeters) and a number of holes positioned in the sheet material.
摘要:
A genetic means of determining whether a female subject produces “pregnancy competent” oocytes is provided. The means comprises detecting the level of expression of one or more genes that are expressed at characteristic levels (upregulated or downregulated) in cumulus cells derived from pregnancy competent oocytes. This characteristic gene expression level, or pattern referred to herein as the “pregnancy signature”, also can be used to identify subjects with underlying conditions that impair or prevent the development of a viable pregnancy, e.g., pre-menopausal condition, other hormonal dysfunction, ovarian dysfunction, ovarian cyst, cancer or other cell proliferation disorder, autoimmune disease and the like. Microarrays containing “pregnancy signature” genes or corresponding polypeptides provide another preferred aspect of the invention. Still further, the subject invention can be used to derive animal models, e.g., non-human primate animal models, for the evaluation of the efficacy of putative female fertility treatments.