摘要:
Disclosed is an electromagnetic wave generator, comprising a tube comprising an anode, a cathode and at least one gate, a tube power supply circuit in which one side of an output terminal is connected to the anode, and the other side of the output terminal is connected to the cathode, and a gate controlling circuit in which at least one side of the output terminal is connected to the gate, wherein a first voltage value of one side of the output terminal of the tube power supply circuit and a second voltage value of the other side of the output terminal of the tube power supply circuit are different from each other with respect to a ground terminal of the tube power supply circuit.
摘要:
A refrigerator may include a drain hose assembly. The refrigerator includes an upper hose, a lower hose connected to the upper hose while being arranged in a machinery chamber, the lower hose being provided with an air inlet hole to introduce outside air, and an opening and closing unit provided at the lower hose to be upwardly pivoted by negative pressure in a storage chamber and to be downwardly pivoted by gravity, in order to open and close the air inlet hole, respectively. As a result, it may be possible to achieve an enhancement in energy efficiency and to reduce the force required to open door according to an improvement of sealing-tightness.
摘要:
A refrigerator may include a drain hose assembly. The refrigerator includes an upper hose, a lower hose connected to the upper hose while being arranged in a machinery chamber, the lower hose being provided with an air inlet hole to introduce outside air, and an opening and closing unit provided at the lower hose to be upwardly pivoted by negative pressure in a storage chamber and to be downwardly pivoted by gravity, in order to open and close the air inlet hole, respectively. As a result, it may be possible to achieve an enhancement in energy efficiency and to reduce the force required to open door according to an improvement of sealing-tightness.
摘要:
The present invention relates to an apparatus for focusing particle beams using a radiation pressure capable of obtaining the same flow amount and a narrower particle beam width with respect to the particle size and a higher numeral density. It is possible to form the particle beams by applying the radiation pressure to the particles with respect to the flow condition that cannot form the particle beams with respect to the set particle sizes. There is provided an apparatus for focusing particle beams using a radiation pressure, comprising an orifice part that is provided at a predetermined portion of the flow tube, and a lens having a hole with a predetermined diameter for thereby focusing the particle flow into a particle beam and applying a radiation pressure to the flow particles; and a light source supply part (A) provided at a portion opposite to the discharge outlet of the mixing tube.
摘要:
The present invention relates to a method of manufacturing a flash memory cell. In order to solve a problem that a reliability of a device is degraded according as electron injected into a floating gate leaks to an exterior due to various stimulus, the floating gate of the flash memory cell is formed dividely into a upper layer and a lower layer with respect to a charge barrier layer so that the leakage of the electrons injected into the floating gate can be prevented from external stimulus, thereby improving a reliability of the memory device.
摘要:
The present invention relates to a novel selective thrombin inhibitor having the following formula (I), which is also effective by oral administration: ##STR1## in which R.sup.1 represents acetyl substituted with aryl or aryloxy, or represents sulfonyl substituted with substituted or unsubstituted aryl or N-containing heterocyclic group,X represents a group of formula ##STR2## R.sup.2 and R.sup.3 independently of one another represent hydrogen; cycloalkyl substituted or unsubstituted with carboxyl or alkoxycarbonyl; arylalkyloxy; hydroxy; or lower alkyl substituted or unsubstituted with carboxyl, alkoxycarbonyl or hydroxy, orR.sup.2 and R.sup.3 together with nitrogen atom to which they are attached can form a piperidine group substituted with carboxyl or alkoxycarbonyl,R.sup.4 represents hydrogen, lower alkyl or lower alkoxy,R.sup.5 represents alkanesulfonyl; alkoxycarbonyl; alkylcarbonyl; formyl; lower alkyl; aryl substituted or unsubstituted with alkoxy or haloalkyl; or hydroxy-substituted lower alkyl, andR.sup.6 and R.sup.7 independently of one another represent hydrogen, lower alkyl or amino,and to a process for preparation thereof and a pharmaceutical composition for thrombin inhibition which comprises the compound of formula (I) as an active ingredient.
摘要:
Novel cis-epoxide compounds of formula (I) are useful for treating or preventing diseases caused by HIV infection: ##STR1## wherein A, B, R.sub.1 to R.sub.4 and n have the same meanings as defined in the specification. The novel HIV protease inhibitor of the formula (I) has a specific structure to form a stable bonding with the enzyme active site, which entails a highly enhanced irreversible inhibition against HIV protease.
摘要:
A flexible display substrate includes: a thin film transistor on the flexible substrate, the thin film transistor including a gate electrode, a gate insulating layer insulating the gate electrode, a channel layer on the gate insulating layer, a source electrode connected with the channel layer, and a drain electrode connected with the channel layer; a first stress absorbing layer below the thin film transistor; a first protection layer on the first stress absorbing layer; a second stress absorbing layer on the thin film transistor; a second protection layer on the second stress absorbing layer; and a pixel electrode on the second protection layer, the pixel electrode being connected with the drain electrode.
摘要:
A flexible substrate includes: a flexible base substrate; a plurality of display structures on a first surface of the flexible base substrate; and a barrier coating on a second surface of the flexible base substrate to prevent contaminants from penetrating into the display structures.
摘要:
A cell plate voltage generator of a semiconductor memory device for selectively providing a cell plate potential having various voltages to thereby substantially reduce the time required for a burn-in test includes a half Vdd generation block for producing a half voltage having a half of an external potential inputted from outside of the semiconductor memory device; a Vbb generation block for generating a negative voltage; a cell plate voltage selection block for generating a plurality of control signals; a transmission block having a plurality of transmission circuits for delivering selectively the half voltage, the negative voltage, the source voltage, and the ground voltage in accordance with the control signals; and a level shifter for level shifting at least two of the control signals in order to avert the voltage drop in threshold voltages of the transmission circuits.