摘要:
A vacuum cleaner is disclosed, including suction means for providing suction force, a suction nozzle for drawing room air by the suction force provided from the suction means, a dust collecting box for receiving the room air drawn through the suction nozzle, an upper cover having an opening at a central portion thereof for selective opening/closing of an upper portion of the dust collecting box, and a filter assembly selectively fastened to an edge of the opening, for filtering dust from the drawn air, and discharging the air to upward, thereby making cleaning and replacement of the dust collector assembly easy.
摘要:
The invention relates to novel pyridine derivatives having an inhibitory effect on production of cytokines, which are involved in inflammatory responses, thus suggesting its usefulness as therapeutic agents for treating diseases related to inflammation, immune, chronic inflammation as well as an agent having an anti-inflammatory and analgesic effect. Further, this invention relates to a method of manufacturing the same and a pharmaceutical composition containing the same.
摘要:
A method for managing copy protection information of a recording medium is disclosed. A data stream encrypted using copy protection information is recorded in a data area of an optical disc such as a write once optical disc or a rewritable optical disc, while the copy protection information and a drive ID are recorded together in a key locker of the optical disc. When a data stream of an optical disc is reproduced, reading and decryption of the copy protection information is selectively performed depending on whether the drive ID recorded in the key locker and a drive ID managed in an optical disc drive, into which the optical disc is inserted, are identical. This prevents contents such as broadcast programs recorded in an optical disc from being illegally duplicated.
摘要:
A washing machine having a steam generator, which prevents the accumulation of scale in the steam generator due to the long-term use thereof, and a method for controlling the same. The washing machine includes a water supply valve for supplying water to the inside of the steam generator therethrough so as to cool the steam generator when the operating time of the steam generator exceeds a predetermined time, and a controller for controlling the operation of a heater for heating the water supplied through the water supply valve.
摘要:
Provided are an apparatus and a method for generating a return-to-zero (RZ) signal, including: a first modulator receiving a first signal having a predetermined frequency to modulate, compensate for and output a first laser beam; a second modulator receiving a second signal complementary to the first signal to modulate, compensate for, and output a second laser beam; a mixer mixing signals output from the first and second modulators to output a third signal; and a third modulator modulating the third signal into an RZ signal and outputting the RZ signal.
摘要:
A drum washing machine, in which scale deposited in a steam generating device installed for improving sterilizing and washing capacities is efficiently eliminated. The drum washing machine includes a housing; a tub for containing washing water; a drum rotatably installed in the tub; and a steam generating device installed in the housing for supplying steam for sterilizing laundry to the drum, wherein a scale eliminating unit is installed in a water supply channel of the steam generating device, and includes at least one protrusion formed on the inner circumferential surface of the water supply channel or a water supply valve and a pulsation circuit for controlling the flow rate and amount of the water. The scale eliminating unit forms turbulence in the steam generating device or supplies water having varied flow rate and amount to the steam generating device, thereby efficiently eliminating scale deposited in the steam generating device.
摘要:
A pole adaptor for connecting and disconnecting a multi-task pole with an attachment tool provides a secure connection and preserves the useful life of the multi-task pole. The adaptor embodies an elongated cylindrical housing having a first open end with two clip holes, a mid-section, and a second open end having four tab holes. The first open end forms a receptacle for the multi-task pole and an alignment with the clip holes for securely attaching the pole adaptor. The second open end forms a receptacle for the attachment tool handle and allowing the handle tabs to connect with two tab holes therein. Four tab holes are provided at the second open end for continued use of the adaptor if two tab wholes wear out.
摘要:
A refresh control circuit and semiconductor devices that may include an address counter for generating a counting address, a repetition address selector for generating a repetition address, a repetition refresh controller for generating a refresh repetition signal based on the counting address and repetition address, and a row decoder for selecting a row of a memory bank based on the counting address and the refresh repetition signal. A method for performing a refresh operation on a semiconductor device that may include receiving a refresh trigger, generating a counting address, generating a repetition address corresponding to a row having a degraded memory cell, providing a refresh repetition signal based on a comparison of the counting address and repetition address, and selecting a row to be refreshed based on one or more of the counting address, repetition address, and the refresh repetition address.
摘要:
Disclosed herein is a process for the preparation of dimethylether from hydrocarbons, including tri-reforming a feedstock mixture comprised of hydrocarbons, carbon dioxide and water vapor in the presence of a tri-reforming catalyst, to prepare a syngas, which then undergoes gas-phase direct synthesis into dimethylether in one step in the presence of a hybrid catalyst. According to the process of this invention, three main processes among typical syngas preparation processes are simultaneously performed, and then, the syngas thus obtained is prepared into dimethylether through a direct reaction in one step, thereby decreasing the apparatus cost and operation cost. In addition, all of the carbon dioxide separated and recovered from the unreacted material and by-products may be reused as reaction material, thus decreasing the generation of carbon dioxide and reducing the material cost.
摘要:
The invention provides methods and materials related to Bcl2L12 polypeptides and the biological activities of Bcl2L12 polypeptides. For example, the invention provides methods and materials related to identifying activators and inhibitors of Bcl2L12 polypeptide activities such as the ability to block apoptosis and promote cell growth and transformation. The invention also provides methods and materials for treating mammals having cancer.