摘要:
A membrane-electrode assembly in which an opening, a catalyst layer and a diffusing layer are placed within a cathode active region; a method for manufacturing the same; and a fuel cell system using the membrane-electrode assembly. The membrane-electrode assembly comprises: a cathode with a catalyst layer, an opening in the catalyst layer, and a diffusing layer; an anode with a catalyst layer and a diffusing layer; and an electrolyte membrane between the cathode and the anode. A hydrogen ion generated by oxidizing a liquid fuel is transferred to the cathode via the electrolyte membrane, and returns to the anode without reaction in the cathode, so that the hydrogen ion is reduced in the anode by receiving electrons from the anode, thereby generating hydrogen gas on the anode channel. The hydrogen gas is used as a high efficiency fuel, thereby enhancing the output performance of the fuel cell.
摘要:
Disclosed herein is an impact modifier for a polymer composition and a method of preparing the same. The impact modifier includes a core comprising a polyorganosiloxane, an acrylate polymer and a styrenic polymer; and a shell generally surrounding the core, the shell comprising a polymer attached to the core. The method includes providing a silicone rubber particle; adding a polymerizable styrenic compound into the silicone rubber particle; polymerizing the polymerizable styrenic compound within the particle to provide a styrenic polymer; adding a polymerizable acrylic compound into the silicone rubber particle; polymerizing the polymerizable acrylic compound within the silicone rubber particle to provide an acrylate polymer; and grafting a polymerizable compound onto the silicone rubber particle to provide a shell substantially surrounding the silicone rubber particle comprising the styrenic polymer and the acrylate polymer.
摘要:
The present invention provides a method for producing a bulk amorphous alloy sheet with high quality at low production cost, by which an alloy melt can be directly transformed into a sheet form without using other additional processes. The method comprises preparing a melt containing alloy components; feeding the melt into a gap defined between two rolls, which rotate in opposite direction to each other, and each of which is provided with heat exchange means; and cooling the melt at a cooling rate higher than the critical cooling rate for transformation of the melt into an amorphous solid phase, when the melt passes through the gap defined between the two rolls. The present invention also provides an apparatus for producing a bulk amorphous alloy sheet with high quality at low production cost, and a bulk amorphous alloy sheet.
摘要:
When a vehicle location is estimated using only detection signals from a sensor unit installed on a vehicle since the value of dilution of precision (DOP) of a navigation message received by a GPS receiver is equal to or greater than a predetermined threshold in a navigation system, the vehicle location is precisely estimated using a traveled distance, a travel angle difference, and lateral and longitudinal inclinations of the vehicle. The value of DOP of the navigation message received by the GPS receiver is compared with the predetermined threshold. If the value of DOP is less than the predetermined threshold, reference vehicle location information is set using the navigation message. If the value of DOP is equal to or greater than the predetermined threshold, the reference vehicle location information is set using vehicle location information just previously map-matched and the detection signals from the sensor unit. The vehicle location is estimated using the set reference vehicle location information and the detection signals from the sensor unit and then map-matched on a digital map stored in a map data storage unit, thereby displaying the map-matched results on a display unit.
摘要:
In one aspect, the present invention provides catalysts for the carbonylation of heterocycles. The inventive catalysts feature metal-ligand complexes having cationic functional groups tethered to the ligand, wherein the tethered cationic groups are associated with anionic metal carbonyl species. The invention also provides methods of using the inventive catalysts to affect the ring opening carbonylation of epoxides.
摘要:
A login browser form allows a user to securely login to an account and access a web-based service at a server or server farm, referred to as a transaction node, without using a separate authentication or single sign-on server. A user is assigned to one of multiple transaction nodes as its home when the user enrolls in the web-based service. In a subsequent attempt to login, the user may land at the home transaction node or at a non-home transaction node. The transaction node serves the login browser form, including code to cause the web browser to transmit the user login id to the transaction node. If the transaction node determines that it is not the user's home, based on its records of user assignments, it identifies the home and configures the web browser to direct future communications to the home. The user's password is not sent to the non-home.
摘要:
A method for manufacturing an interconnection of a semiconductor device is provided. The method can include the steps of: forming an interlayer dielectric layer on a semiconductor substrate; forming a damascene pattern on the interlayer dielectric layer; depositing a seed layer on the interlayer dielectric layer; depositing a metal layer on the seed layer; depositing a copper layer on the metal layer for forming a copper interconnection; and performing a heat treatment process such that the metal layer reacts with the copper layer to produce an alloy layer including copper.
摘要:
Disclosed is a sliding mechanism apparatus used for slidably opening and closing a slider-type cellular phone. A guide member and a slider member are engaged with each other so as to enable to slide relative to each other. The end of one arm of a first torsion spring is connected to the slider member near the left edge thereof. The end of the other arm thereof is coupled to the right half area of the guide member. The end of one arm of a second torsion spring is connected to the slider member near the right edge thereof. The end of the other arm thereof is coupled to the left half area of the guide member. From the expanded original state of the first and second torsion springs, if an external force is exerted on the slider member or the guide member, the torsion springs are compressed into an acute angle and then spread again by means of the elastic force thereof. In this way, the slider member can move to the lowermost position or the lowermost position. In the first and second torsion springs, the distance between the ends of two arms is larger than at least half of the width of the slider member. Therefore, the first and second torsion springs can maximally utilize the width of the guide member while turning, thereby extending the maximum travel distance of the slider member.
摘要:
A metal line, which can be used in a semiconductor device structure less than 65 nm in size by forming a barrier metal of an anti-diffusion layer for a copper line using CVD TiSiN, and a fabrication method thereof are provided. The metal line includes: a semiconductor substrate having a semiconductor device formed thereon; an insulating layer which has a contact hole at a portion corresponding to the semiconductor device and is formed on the semiconductor substrate; a TiSiN barrier metal layer which is formed in the contact hole; and a copper line which is formed on the TiSiN barrier metal layer.
摘要:
A mobile communication terminal including a display unit, and a controller configured to display on the display unit both a first list including tasks that can be simultaneously executed and a second list listing currently executing tasks.