摘要:
In a measuring space of the object (1), an essential measurement region (41, 61, 71, 81, 111, 131) having a center region of the measuring space and a plurality of peripheral measurement regions (42, 62, 63, 72, 82, 112, 132) which do not have any region overlapped with the essential measurement region are set. Then, the essential measurement region is combined with a selected peripheral portion of the plurality of the peripheral measurement regions to measure in a preceding manner a nuclear magnetic resonance signal from the object as data of the measuring space. The essential measurement region is combined with the peripheral measurement region of the plurality of the peripheral measurement regions which has not been selected in the preceding measuring step to measure a nuclear magnetic resonance signal from the object as data of the measuring space. Sequentially, the essential measurement region is combined with the peripheral measurement region having not been measured in a preceding measuring step to measure a nuclear magnetic resonance signal from the object. The data of the essential measurement region and the data of the peripheral measurement region thus measured is supplemented with the data of the peripheral measurement region measured in the preceding measuring step to generate data of the measuring space.
摘要:
An MRI apparatus having a pulse sequence of dynamic MRA performs a pulse sequence for monitoring arrival of a contrast agent at a blood vessel of interest. The pulse sequence is substantially the same as the imaging sequence except that the phase-encode number and/or the slice-encode number is small. A time-series image reconstructed by using data measured under the condition of applying gradient magnetic fields with a low spatial resolution is displayed to ascertain that the contrast agent has arrived at the blood vessel of interest. When the contrast agent arrives at the blood vessel of interest, the phase-encode and slice-encode are added to continue the substantial measurement pulse sequence without changing the pulse sequence itself. The first image of the substantial measurement is produced by using the data acquired at the time of arrival of the contrast agent in monitoring. Thus, the arrival time of the contrast agent can be reliably monitored with high time-resolution and the substantial measurement can be performed with most suitable timing to obtain an excellent blood vessel image.
摘要:
An MRI apparatus having a pulse sequence of dynamic MRA performs a pulse sequence for monitoring arrival of a contrast agent at a blood vessel of interest. The pulse sequence is substantially the same as the imaging sequence except that the phase-encode number and/or the slice-encode number is small. A time-series image reconstructed by using data measured under the condition of applying gradient magnetic fields with a low spatial resolution is displayed to ascertain that the contrast agent has arrived at the blood vessel of interest. When the contrast agent arrives at the blood vessel of interest, the phase-encode and slice-encode are added to continue the substantial measurement pulse sequence without changing the pulse sequence itself. The first image of the substantial measurement is produced by using the data acquired at the time of arrival of the contrast agent in monitoring. Thus, the arrival time of the contrast agent can be reliably monitored with high time-resolution and the substantial measurement can be performed with most suitable timing to obtain an excellent blood vessel image.
摘要:
To improve assembly precision of a fuel cell by improving a sealing property. A first gasket 12 is integrally formed with a first gas diffusion layer 11 and a second gasket 14 is integrally formed with a second gas diffusion layer 13, and a hinge portion 15 connects the first gasket 12 to the second gasket 14. The gas diffusion layer incorporated gasket sandwiches a membrane-electrode from both sides in the thickness direction. A seal protrusion 12c is formed in a surface of the first gasket 12 or the second gasket 14 and comes into close contact with the membrane-electrode.
摘要:
A sealing structure of a fuel cell has a first gasket made of an elastomer and provided integrally on a separator, and a second gasket made of an elastomer and provided integrally on other separator. A membrane-electrode assembly is sandwiched or pinched by the first and second gaskets. The first gasket has a main lip in which a top portion brought into close contact with the membrane-electrode assembly is formed flat. The second gasket has a flat seal portion and a sub lip protruding from this flat seal portion at a position opposing the main lip. The flat seal portion and the sub lip are brought into close contact with the membrane-electrode assembly. The width of the top portion of the main lip is narrower than the width of the flat seal portion, and larger than the width of the sub lip.
摘要:
A unit mounting and dismounting mechanism includes a unit mountable in and dismountable from an apparatus body, an engaging portion provided in one of the apparatus body and the unit, a pressing member provided in the other of the apparatus body and the unit, the pressing member engaging with the engaging portion and pressing the unit against the apparatus body with a biasing force of a biasing member in a mounting direction of the unit when the unit is mounted in the apparatus body, and a release member provided in the unit, the release member being operated in a direction different from a dismounting direction of the unit from the apparatus body so as to move the pressing member against the biasing force of the biasing member in a direction to release pressing.
摘要:
In order to inexpensively provide gaskets which have good sealing performance, and which fulfill various applications by simply stamping out sheet-like gaskets in accordance with specifications, a gasket is obtained by integrally forming, with a sheet-like base material, a gasket part made of a rubber-like elastic material on at least one surface of the base material, said gasket part being composed of continuous protrusions provided with a fixed pattern. The sheet-like gasket parts produced in this manner are capable of inexpensively providing gaskets which fulfill various applications by simply stamping out the sheet-like gasket parts in accordance with various specifications.
摘要:
A fixing device includes: a fixing rotating member; a pressing rotating member pressed to the fixing surface of the fixing rotating member; a displacing mechanism that can displace the pressing rotating member at least at a first setting position that the pressing rotating member pressed to the fixing surface is located in a first position relative to the fixing rotating member and at a second setting position the pressing rotating member pressed to the fixing surface is in a second position shifted from the first position in the downstream or upstream side of a passing direction of the recording medium at the fixing process part; a guide member having a guide part that guides the recording medium to an introducing portion of the fixing process part; an adjusting mechanism that can adjust the position of the guide member in accordance with the displacement of the pressing rotating member to the first setting position or the second setting position.
摘要:
A wireless communication device includes an RF transceiver configured to up convert a base band signal to a transmitting RF signal, a configurable matrix power amplifier circuit configured to amplify the transmitting RF signal to produce an amplified RF signal, and an antenna configured to transmit a wireless signal in response to the amplified RF signal.
摘要:
To effectively prevent deformation of an MEA and shift of GDLs, first GDLs, second GDLs, and separators are layered in order at both sides of the MEA in the thickness direction thereof, the gaskets which sandwich an end portion of the MEA outside the first GDLs and the second GDLs are made from rubber or a synthetic resin material having rubber-like elasticity and integrally provided on the separators respectively, the first GDLs have end portions which are formed so as to protrude beyond outer peripheries of the second GDLs, and the gaskets have support step portions which can position and support the end portions of the first GDLs at the same height as the support height by the second GDLs.