Abstract: A separator for a fuel cell is provided. The separator comprises a flow path member and a base separator. The flow path member is made of a graphite foil and has a flow path through which fluids pass. The base separator has a seating recess formed on the surface thereof. The flow path member is mounted in the seating recess. The flow path is formed by pressing the graphite foil. The separator can be produced at reduced processing cost in a short processing time.

Abstract: A magnetic resonance imaging (MRI) system includes a radio frequency (RF) coil which receives timing information about a pulse sequence and stores the timing information in a memory of the RF coil. Then, when an RF excitation signal is transmitted, the RF coil performs decoupling. When a magnetic resonance (MR) echo signal is generated, the RF coil receives the MR echo signal and transmits the MR echo signal to a central controlling apparatus through a wireless channel. When a transmission error arises, the RF coil retransmits corresponding data in an idle time when the RF excitation signal is not transmitted or the MR echo signal is not generated. Thus, the RF coil is prevented from being damaged by the RF excitation signal and prevents the quality of an MR image from deteriorating compared to a synchronization-type communication method.

Abstract: A magnetic resonance imaging (MRI) device and a control method thereof reduce the preparation time for MRI photographing a patient. A patient table has a transfer unit for moving a patient inside the magnet assembly. A fixing unit includes a signal transmitting unit. A signal receiving unit is installed on a diagnosis area of the patient or a radio frequency (RF) coil attached to a diagnosis area of the patient, and a patient position determination system calculates position information of the diagnosis area of the patient or the RF coil if the signal receiving unit detects a signal output from the signal transmitting unit when the transfer unit transfers the patient to inside the magnet assembly and to transfer the diagnosis area of the patient to an optimum photographic area inside the magnet assembly based on the position information.

Abstract: The present invention relates to a ceramic filter comprising clay and a process for preparing the same. More specifically, the present invention relates to the ceramic filter, including wave-shaped ceramic paper and plate-shaped paper, having improved efficiency and performance that may optimize the process of coating and calcining inorganic binder by forming an outer wall thereon, using clay, and thus increase insulation effect and mechanical strength represented by the clay layer, and the process for preparing thereof.

Abstract: Disclosed herein is a humidifying medium which adopts a natural humidifying system and has excellent lifespan characteristics. The humidifying medium according to the present invention is formed by coupling a linerboard to one or both sides of a corrugated board. The corrugated board and the linerboard have different average pore diameters, and the humidifying medium of the present invention may be formed by coupling a linerboard having an average pore diameter of 35˜40 ?m to one or both sides of a corrugated board having an average pore diameter of 8-10 ?m.

Abstract: Provided is an electrolyte membrane for solid oxide fuel cells. The electrolyte membrane for solid oxide fuel cells includes two or more deposited layers, wherein each of the deposited layers independently has an average crystal grain size of 5-100 nm and the deposited layers are different from each other in the average crystal grain.

Abstract: A display apparatus includes a first substrate opposite a second substrate, a plurality of electrode patterns in the second substrate, the plurality of electrode patterns extending along a first direction, a plurality of barrier patterns in the second substrate, the plurality of barrier patterns being insulated from the electrode patterns and extending along a second direction crossing the first direction, and a plurality of pixels, the first and second substrates with the pixels defining a display panel, and each pixel including a gate line extending along a third direction, a data line extending along a fourth direction, and a pixel electrode electrically connected to the gate line and the data line, the pixel electrode being configured to generate an electric field with a corresponding electrode pattern of the plurality of electrode patterns to display an image.

Abstract: The present invention relates to a TDMA communication system using the position movement of a time slot. The TDMA communication system includes a TDMA network, a network central station, and terminals. The network central station includes a receiver for receiving transmission cycle information and time slot allocation requests from the terminals, a network central station controller for writing a degree of identification for the number of cases of time slot allocation according to the information transmission cycle, searching for an allocable optimum time slot, and withdrawing a time slot from a terminal which has finished communication, a time slot management unit for allocating a time slot to the terminal based on degree of identification for the number of cases of time slot allocation written by the network central station controller, and a transmitter for transmitting information about the allocated time slot to the terminal.

Abstract: The present invention relates to a catalyst for removing nitrogen oxides from an exhaust gas, a method for preparing the same and a method for removing nitrogen oxide in an exhaust gas using the same, and more particularly, to a catalyst for removing nitrogen oxides from the exhaust gas in which a ceramic fiber carrier is treated by hydrothermal reaction prior to washcoating to improve the hydrothermal stability of catalyst, a method for preparing the same and a method for removing nitrogen oxide in an exhaust gas using the same. The catalyst prepared according to the present invention has excellent hydrothermal stability and an activity of the catalyst remains for a long time. Further, by using this catalyst to remove nitrogen oxides in an exhaust gas, a removal ratio of the nitrogen oxides is greatly enhanced.

Abstract: A Multiple Input Multiple Output (MIMO) antenna apparatus is provided. The apparatus includes antenna devices that operate in respective resonant frequency bands. The apparatus also includes a main board comprising a device region and a ground region. The antenna devices are disposed on the device region. The ground plate is disposed on the ground region for grounding the antenna devices. The apparatus also includes at least one isolation device having a negatively charged line that protrudes from the ground plate and extends between the antenna devices on the device region, and a positively charged line that extends around the negatively charged line and connects the antenna devices to each other. The isolation device induces an electromagnetic wave that is generated by the antenna devices between the negative and positively charged lines to isolate the antenna devices from each other.

Abstract: Provided is a fuel cell system using waste hydrogen generated from a sea water electrolyzing apparatus, the fuel cell system including: a sea water electrolyzing apparatus carrying out electrolysis of sea water used as cooling water in a nuclear power generation system to produce a chlorine-containing material; a hydrogen conveying line linked to one side of the sea water electrolyzing apparatus to convey waste hydrogen generated during the electrolysis; and a fuel cell linked to the hydrogen conveying line to generate electricity by using the waste hydrogen supplied from the hydrogen conveying line as fuel. The fuel cell system generates electricity by using waste hydrogen, which, otherwise, is totally discarded after being generated secondarily from the sea water electrolyzing apparatus, as fuel for the fuel cell.

Abstract: The present invention relates to a porous ceramic structure, and a dehumidification/humidification apparatus comprising the same. More particularly, the present invention comprises: a porous ceramic humidifying medium having an inner circumferential surface and an outer circumferential surface; a dehumidifying medium which has an inner circumferential surface and an outer circumferential surface, and which is disposed in the porous ceramic humidifying medium; and a cutoff layer formed between the inner circumferential surface of the humidifying medium and the outer circumferential surface of the dehumidifying medium. The porous ceramic structure and the dehumidification/humidification apparatus comprising same according to the present invention can easily increase the humidifying and dehumidifying capacity, simplify a flow channel, and achieve a compact design.

Abstract: The present invention provides a model equation for predicting the impact resistance of an ABS material, which has excellent properties, gloss, and stainability and thus can be widely used in vehicles, electricity and electronics, and miscellaneous applications. The model equation of the present invention provides high accuracy and reproducibility. The prediction technology can be used particularly to determine whether a material complies with the specification of vehicle components, to overcome the quality problems, and to prevent the production of defective products.

Abstract: The present invention relates to a catalyst including a ceramic structure containing porous ceramic paper and a catalyst component supported on the ceramic structure, and to a method for removing formaldehyde using the catalyst. The present invention provides a catalyst in which a structure made of ceramic paper having excellent characteristics in terms of porosity, specific surface area, and the like is used as a support for the catalyst component to maximize an effective area for reacting the supported catalyst component with a substance to be treated, thereby improving catalyst performance. The present invention also provides a method of using the catalyst.

Abstract: A ceramic structure for water treatment, a water treatment apparatus and method are provided. Immersion efficiency of a photo catalyst and a specific surface area of the immersed photo catalyst can be improved using a ceramic medium including a ceramic paper prepared of a ceramic fiber. Accordingly, it is possible to provide the water treatment apparatus and method capable of increasing decomposition efficiency of contaminated materials due to irradiation of ultraviolet light, and so on, enabling continuous purification treatment, and remarkably reducing preparation, management and water treatment expenses.

Abstract: The present invention relates to a catalyst for removal of nitrogen oxides from exhaust gas, a method of preparing the same and a method of removing nitrogen oxide in an exhaust gas using the same, and more particularly, to a catalyst for removal of nitrogen oxides from exhaust gas in which a ceramic fiber carrier is hydrothermal-treated prior to washcoating to improve the hydrothermal stability of catalyst, a method of preparing the same and a method of removing nitrogen oxide in an exhaust gas using the same. The catalyst prepared according to the present invention has excellent hydrothermal stability and an activity of the catalyst remains for a long time. Further, by using this catalyst to remove nitrogen oxides in an exhaust gas, a removal ratio of the nitrogen oxides is improved more.

Abstract: A tile using an activated carbon, which is excellent as a formaldehyde absorbent, and a preparation process thereof are disclosed. The effect of activated carbon on absorbing formaldehyde is maximized by the activated carbon-in-core structure, in which the problem of activated carbon that is easily oxidized during a heat treatment may be overcome.

Abstract: A separator for a fuel cell is provided. The separator comprises a flow path member and a base separator. The flow path member is made of a graphite foil and has a flow path through which fluids pass. The base separator has a seating recess formed on the surface thereof. The flow path member is mounted in the seating recess. The flow path is formed by pressing the graphite foil. The separator can be produced at reduced processing cost in a short processing time.

Abstract: The present invention relates to a ceramic filter comprising clay and a process for preparing the same. More specifically, the present invention relates to the ceramic filter, including wave- shaped ceramic paper and plate-shaped paper, having improved efficiency and performance that may optimize the process of coating and calcining inorganic binder by forming an outer wall thereon, using clay, and thus increase insulation effect and mechanical strength represented by the clay layer, and the process for preparing thereof.

Abstract: The present invention is a method and apparatus for cleaning a chemical vapor deposition (CVD) chamber using cleaning gas energized to a plasma in a gas mixing volume separated by an electrode from a reaction volume of the chamber. In one embodiment, a source of RF power is coupled to a lid of the chamber, while a switch is used to couple a showerhead to ground terminals or the source of RF power.