摘要:
The present invention relates to a noninvasive medical pulsimeter sensor using magnetic thin films. By forming a pulse-sensing part array with magnetic sensors such as GMR devices, MTJ devices and the likes, over the skin-contacting part which consists of a magnetic material, the present invention increases the integrity of sensors, minimizes the time for searching the pulse and it is applicable widely to portable pulsimeters and the likes.
摘要:
A method and apparatus for electric-discharge machining a turbine blade are provided. The method includes the steps of: a) preparing a disc material divided into an first portion and a second portion on a basis of a symmetrical line, b) fixing the disc material, with the first portion facing upward, c) forming an initial profile of at least one of the plurality of blades at the first portion of the disc material using at least two roughing tool electrodes to concurrently form a roughing space at the first portion, d) leading at least two finishing tool electrodes into the roughing space to concurrently perform precise machining of the blade, e) turning over the disc material, fixing the disc material and repeating steps c) and d) on the second portion.
摘要:
A method and apparatus for electric-discharge machining a turbine blade are provided. The method includes the steps of: a) preparing a disc material divided into an first portion and a second portion on a basis of a symmetrical line, b) fixing the disc material, with the first portion facing upward, c) forming an initial profile of at least one of the plurality of blades at the first portion of the disc material using at least two roughing tool electrodes to concurrently form a roughing space at the first portion, d) leading at least two finishing tool electrodes into the roughing space to concurrently perform precise machining of the blade, e) turning over the disc material, fixing the disc material and repeating steps c) and d) on the second portion.
摘要:
Provided are a low carbon additive for a warm-mix asphalt (WMA) mixture, in which vegetable wax based on modified palm wax is mixed into polyethylene wax so as to be able to promote high-temperature physical properties of the WMA mixture as well as solve problems on low-temperature physical properties of the WMA mixture, warm-mix asphalt produced using the same, and a method of producing the WMA mixture using the using the warm-mix asphalt. The low carbon additive contains polyethylene wax and vegetable wax at a weight ratio of 20:1 to 1:2. The modified palm wax employs palm wax that melt-reacts with sodium hydroxide (NaOH) and stearic acid (CH3(CH2)16COOH). This low carbon additive enables the WMA mixture to be efficiently produced, and thus makes it possible to reduce heating energy required when the WMA mixture is produced. Thereby, it is possible to remarkably reduce the emission of carbon dioxide that is a principal factor of global warming.
摘要:
Provided are a low carbon additive for a warm-mix asphalt (WMA) mixture, in which vegetable wax based on modified palm wax is mixed into polyethylene wax so as to be able to promote high-temperature physical properties of the WMA mixture as well as solve problems on low-temperature physical properties of the WMA mixture, warm-mix asphalt produced using the same, and a method of producing the WMA mixture using the using the warm-mix asphalt. The low carbon additive contains polyethylene wax and vegetable wax at a weight ratio of 20:1 to 1:2. The modified palm wax employs palm wax that melt-reacts with sodium hydroxide (NaOH) and stearic acid (CH3(CH2)16COOH). This low carbon additive enables the WMA mixture to be efficiently produced, and thus makes it possible to reduce heating energy required when the WMA mixture is produced. Thereby, it is possible to remarkably reduce the emission of carbon dioxide that is a principal factor of global warming.