摘要:
A passive cooling system of a nuclear power plant includes a steam generator, a cooling water storage tank, a water cooling heat exchanger, an air cooling heat exchanger, a divergence valve, and a cooling tower. The steam generator generates steam by heat exchange with a primary coolant system, and the cooling water storage tank stores cooling water therein. The water cooling heat exchanger is disposed in the cooling water storage tank, and the air cooling heat exchanger is connected to the steam generator. The divergence valve is controllable to divert steam from the steam generator into both the water cooling heat exchanger and the air cooling heat exchanger. Each of the cooling water storage tank, the water cooling heat exchanger, and the air cooling heat exchanger are located in the cooling tower.
摘要:
Provided is a semiconductor substrate including a seed layer disposed on a substrate, a buffer layer disposed on the seed layer, a plurality of nitride semiconductor layers disposed on the buffer layer, and at least one stress control layer between the plurality of nitride semiconductor layers. The buffer layer includes a plurality of step regions and at least one heterogeneous region. The plurality of step regions includes the same nitride semiconductor material. The heterogeneous region includes a different nitride semiconductor material from the step regions.
摘要:
A light emitting device includes a first conductive semiconductor layer on a substrate, a control layer interposed between the substrate and the first conductive semiconductor layer. The control layer includes a first nitride semiconductor layer having aluminum (Al), a plurality of nano-structures on the first nitride semiconductor layer, and a second nitride semiconductor layer provided on the first nitride semiconductor layer and having gallium (Ga).
摘要:
There is disclosed a collaboration system using an open public network for providing collaboration services among a plurality of enterprises including a server configured to implement a plurality of processes for the collaboration services; a user terminal connecting to the server via the open public network to restrictedly uses data generated by the processes according to a user permission; and a database configured to store the data generated by the processes, wherein the server implements the processes comprising a project development process, a data change process, a general business process and a collaboration process, and the server restrictedly messages an event generated during the implementation of the processes to the user terminal according to the user permission.
摘要:
A method for manufacturing first electrode of a capacitor of a semiconductor device is disclosed. After forming a polycrystalline layer composed of grains with microscopic structure to include an impurity in them, the polycrystalline layer is etched to cut the boundary portions of the grains, thereby allowing the surface of the polycrystalline layer to be rugged. The micro-trenches or micro-pillars are formed by using the oxide layer or an anisotropic etching after exposing the surface of the first rugged polycrystalline layer, and epitaxial grains are formed by epitaxial growth, so that cell capacitance can be further increased. The simple process allows the formation of a reliable semiconductor device having regularity and reproducibility, and capable of increasing and adjusting the cell capacitance easily.
摘要:
The present invention relates to a stage, particularly to, a stage which is able to move minutely, having a rigidity-improved transfer part. A stage includes a work table on which a working object is placed, a motor configured to provide a rotational force, a shaft rotated by the motor to transfer the work table, a linear moving part configured to be expandable to linearly move the shaft in an axial direction, the linear moving part having a hollow to insert an end of the shaft therein, and an expanding part configured to be expandable as far as the shaft is moved by the linear moving part.
摘要:
A mobile device and a method control a touch lock function to be set in a locked or unlocked stated by sensing motions of the mobile device. When a motion sensor unit detects any motion of the mobile device and creates a sensing signal corresponding to the motion, a control unit of the mobile device sets a touch lock function to a locked state or an unlocked state, depending on the sensing signal. In the locked state of the touch lock function, the control unit does not perform a particular operation assigned to a touch event even though the touch event is generated on a touch panel in response to a user's touch action.
摘要:
This invention relates to a high speed packet switching controller in a telephone switching system which can suitably be applied to a packet controller having large capacity using a neural network chip and maximize the system performance by the optimized switching operation. The high speed packet switching controller comprises a row address decoder for decoding a weight raw address which is inputted thereto, a column address decoder for decoding a weight column address which is inputted thereto, a matrix array for providing the neural network using address signals provided from the row address decoder and column address decoder and outputing varied voltage in accordance with an external weight value, a neural network for producing a final crossbar switching control signal, an external input/output bus for transmitting an output signal of the neural network, and an internal neural data bus for transmitting the address signal output from the row address decoder and column address decoder to the matrix array.
摘要:
A manufacturing method for a semiconductor memory device including a capacitor having a double fin-shaped structure is provided, wherein a storage electrode is formed by applying a thick planar material capable of being wet-etched between the double fins consisting of conductive layers. The storage electrode is formed by forming a thin, high temperature oxide film having an etching rate which is great. Thus, the resulting memory cell's topography is improved and damage to the storage electrode is decreased.
摘要:
A light emitting device includes a substrate, a buffer layer, a first conductive layer, an active layer and a third conductive semiconductor layer. The first conductive layer has a prescribed tensile stress, and a second conductive semiconductor layer has a prescribed compressive stress.