PURPOSE: To provide a method for preparing porous silica sphere with uniform pore structure and size having an insulation effect by a simple method using an inexpensive material. CONSTITUTION: The method for preparing porous silica sphere comprises a process of increasing temperature of commercial silica gel to a temperature range of 1,050 to 1,200 deg.C in a temperature increasing rate of 90 deg....

PURPOSE: A ceramic package and a fabricating method thereof are provided to prevent a leakage and maintain a sealing state of an internal cavity thereof by interrupting a leak path. CONSTITUTION: A stacked structure includes a cavity for storing components and a plurality of ceramic layers having internal patterns. A lead is installed on an upper part of the cavity of the stacked structure in orde...

The invention relates to a system for navigating in real time in a three-dimensional medical image model and to a method thereof. The method includes displaying a orientation view of the medical image model on a display; adjusting a location related to the displayed orientation view of the medical image model based on a pointing device alignment; displaying an inside view related to the location i...

PURPOSE: Thermal transfer printing method and apparatus are provided to reduce rated power of a battery commonly used with another device and regulate the rated power of the battery by a manufacturer. CONSTITUTION: The method includes grouping critical data existed in the same order at each blocks of main lines composing a unit page, storing the grouped critical data as a sub line data, and printi...

PURPOSE: An apparatus and method for controlling a dynamic buffer for reverse-reproducing a digital video stream are provided to reverse-reproduce MPEG(Moving Picture Experts Group) video streams using only a small number of frame memories by controlling frame buffers using an MPEG decoder and an I-frame encoder. CONSTITUTION: An apparatus for controlling a dynamic buffer for reverse-reproducing a...

The present invention relates to a vertically aligned LCD (VA-LCD) employing a bi-axial retardation compensation film, in which an in-plain refractive index (nx, ny) and a thickness refractive index (nz) of the film is nx>ny>nz. The film has a reversed wavelength dispersion in which retardation is increased in proportion to the increase of a wavelength in the range of visible rays and has a normal...

PURPOSE: A fuel combustion reducing device is provided to increase fuel efficiency by lowering pressure in advance in a fuel combustion unit of an internal combustion engine, to purify the exhaust gas by reducing the amount of the exhaust gas, and to save natural resources. CONSTITUTION: If the pressure of a combustion chamber is lowered in operation, the temperature rises. If the pressure rises, ...

PURPOSE: A gain clamped semiconductor optical amplifier using a Raman amplification theory is provided to reduce a size and a cost while maintaining a high gain, a low noise index. CONSTITUTION: A gain clamped semiconductor optical amplifier using a Raman amplification theory includes an optical fiber(201) having a Raman gain characteristic, and the gain clamped semiconductor optical amplifier(202...

PURPOSE: A gain-clamped optical amplifier is provided to realize a regular gain character without regard to a change in strength of input signal light. CONSTITUTION: An optical fiber bragg grating(12) is installed at an input optical fiber(11). An isolator(14) is installed at an output optical fiber(13). An optical amplifier(15) is placed between the optical fiber bragg grating(12) and the isolato...

PURPOSE: A method for controlling packet transmission in wire and wireless communication networks and generating packet charging data, and an apparatus therefor are provided to detect and cope with hacking and denial of service attack, and reduce cost by integrating a packet service control function and a charging data generating function. CONSTITUTION: A packet data input unit(250) receives packe...

PURPOSE: Provided are a solid polymer electrolyte which can be used at a room temperature by adding a carbon filler and can be discharged when used in a lithium polymer sulfur battery, and a lithium polymer sulfur battery containing the electrolyte. CONSTITUTION: The solid polymer electrolyte comprises a slurry comprising a common polyethylene oxide; 1-50 wt% of a carbon filler selected from the g...

PURPOSE: A method is provided to manufacture a nuclear fuel pellet having a high density and crystal grain having a large size, by adding a phosphorous as a sintering promoting agent. CONSTITUTION: A method comprises a step of producing a green pellet by compressing and molding nuclear fuel powder; and a step of producing a nuclear fuel pellet by sintering the green pellet by a temperature of 1500...

The invention relates to a lift installation (10) for conveying persons/good s, to a method for operating this lift installation (10) and to a method for modernising a lift installation. The lift installation (10) comprises at least two cages (1, 1') arranged one above th e other in vertical travel direction, a drive (4, 4') per cage (1, 1') for moving the cages (1, 1'), cage (1, 1') and drive (4,...

The present invention concerns a module ( 3 ) and a frame ( 1 ) for cable entries, pipe penetrations etc. The module ( 3 ) has end parts ( 7 ) and middle parts ( 8 ) adaptable to receive flat cables ( 6 ) or the like having an elongated cross section. The end parts ( 7 ) may be identical to parts forming a module ( 2 ) for receiving cables, pipes etc. having a circular cross section. The frame ( 1...

A mobile telephone has a circuit card with RF circuits for the telephone, a casing (1) in which the circuit card is fixable and which has a number of electric components such as battery, loudspeaker (4), microphone, vibrator (3), antenna (6), etc. The electric components are connectable to the circuit card by the intermediary of a number of conductor paths (21-26) disposed on or in the material of...

PURPOSE: An electric vehicle is provided to permit wind power generators to generate electrical energy by the travel of the vehicle, charge a battery with thus-generated electrical energy, and use the electrical energy charged in the battery. CONSTITUTION: An electric vehicle comprises an electric motor(10) for driving the vehicle; wind power generators(20) mounted at a predetermined interval on t...

A hydraulic steering device, particularly for marine outboard engines, which outboard motors have a clamping and/or gripping end for fastening them to the transom of a watercraft on which end the motor/propeller assembly is mounted in such a manner as to rotate about a substantially vertical steering axis, and which steering device includes a closed hydraulic circuit having at least one pump drive...

The control circuit (1) comprises a source of dc voltage (B), a first electronic switch (M1), interposed between a first terminal (2) of the voltage source (B) and a corresponding first terminal (4) of the load (L1), a second electronic switch (M2), interposed between the other or second terminal (5) of the load (L1) and the other or second terminal (GND) of the source (B), a current recirculation...