baber/WOPTO huggingface dataset:
Patent KR-810000748-B1 (KR)
Title: Method for separating vinyl chloride monomer from aqueous poly vinyl chloride resin mixture
Inventor: KUHN L
IPC: C08F14/06
Filed: 1977-06-21
Granted: 1981-06-27
Abstract: The vinyl chloride(I) content of aq. I polymer dispersion is reduced to<400 ppm by passing the dispersions over a vibrating plate at 54-80%/25-508 mm.  Thus, passing a 34.7 % PVC latex contg. 19.327 ppm I at 7.13 kg/min and 37≰/508mm over a plate vibrating with frequency 3600/min and vertical amplitude 0.2 mm for 50 min reduces the I content to 188 ppm, compared with 574 with no vibration.
Patent KR-810001876-B1 (KR)
Title: Vaporphase polymerization with temporarily inactive titanium catalyst
Inventor: FOTIS P
IPC: C08F10/00
Filed: 1978-11-28
Granted: 1981-11-19
Abstract: Olefins were polymd. by conveying an inactive high-yield Ti catalyst component to a vapor-phase polymn. reactor with a liq. comprising recycled quench liq., reactivating the Ti catalyst component inside the reactor with a metal alkyl reducing agent, and polymg. the olefin under gas-phase polymn. conditions with the reactivated catalyst to form a polyolefin having a low level of catalyst residue.
Patent KR-830002816-B1 (KR)
Inventor: NUEBLEIN LUDWIG
IPC: C07D285/12
Filed: 1979-12-15
Granted: 1983-12-26
Abstract: 내용 없음.
Patent KR-840000431-B1 (KR)
Title: Polyester composition for binding foundry sand
Inventor: OHOKAWA KOUE
IPC: B22C1/22
Filed: 1980-05-23
Granted: 1984-04-06
Abstract: Foundry molding and core sand binder is based on a crystalline unsatd. polyester (I)  together with diallyl phthalate monomer (II), the (II) / (I) wt. ratio being 5 - 30. The binder is a scarcely tacky liq. at room temp. and has a viscosity of under 500 poises at a temp. above the softening point. Pref. (I) has an av. mol. wt. of 1000 - 2000 and is a reaction prod. of glycol(s) and unsatd. dibasic acid(s).  An organic peroxide is added as a cure catalyst in an amt. of 0.1-10 wt. %.  The uses of the molds include casting of Al alloy. The molds and cores have high green strength and can be broken up easily after casting, even when a relatively low casting temp. is used.
Patent KR-840001501-B1 (KR)
Title: A method for reproducing pictures from original pictures depending on the desired layout
Inventor: YAMADA MITSUHIKO
IPC: G03F7/00
Filed: 1980-08-07
Granted: 1984-09-28
Abstract: A method is described for reproducing pictures on a photosensitive material from original pictures depending of the desired layout. A plurality of original picturs are scanned in parallel by means of picture scanning means to obtain rows of picture signals. The picture signals obtained are aligned in series depending on the desired layout, and the picture signals are used to record aligned reproduction pictures on the photosensitive material in the desired layout positions by means of a picture recording means.
Patent KR-840001465-B1 (KR)
Title: Video signal processing circuit
Inventor: MATSUZAKI ATSUSHI
IPC: H04N5/16
Filed: 1981-01-15
Granted: 1984-09-27
Abstract: A video signal processing circuit for an input video signal having a DC level, a pedestal level, and a blanking period, includes a first clamp circuit for clamping the pedestal level of the input video signal to a first predetermined DC level in response to a clamp voltage supplied from a clamp voltage source, a blanking circuit for setting the level of the input video signal to a second predetermined DC level which is higher than the pedestal level of the input video signal during the blanking period of the imput video signal and for producing a wave-formed signal, a peak-hold circuit for detecting and holding the darkest level of the wave-formed signal.
Patent KR-860000373-B1 (KR)
Title: Method for manufacturing sweet seasoning material from sorbitol and mannitol
Inventor: ADAJI TAKASHI
IPC: A23L27/00
Filed: 1981-03-17
Granted: 1986-04-16
Abstract: Mixts. of oligosaccharides were prpduced by attaching 1-4 fructose molecules to sucrose in the presence of fructosyl transferase. The products are sweeteners and have low cariogenicity owing to their resistance to bacterial dextran sucrase. The oligosaccharides have a sweetness of 60-80% of that of sucrose. Catalytic redn. of the product selectively converts glucose and fructose formed in the fructosyl transferase reaction to sorbitol and mannitol, further decreasing the cariogenicity.
Patent KR-850000458-B1 (KR)
Title: Apparatus for controlling a two-speed axle shift motor
Inventor: WILLIAMS JAMES A
IPC: F16H61/32
Filed: 1981-08-05
Granted: 1985-04-05
Abstract: In the ratio change appts. when a switch is actuated to select an axle ratio, power is applied to one side of the armature of DC motor. The switch is connected in series with several steering diodes between a power source and the motor armature. Power is also applied as a ratio change signal to a timing circuit. A first device is responsive to the ratio change signal for generating a first control signal for a first predetermined time.
Patent KR-840001066-B1 (KR)
Title: Flat knitting machine capable of changing the density of loop
Inventor: SHIMA MASAHIRO
IPC: D04B15/32
Filed: 1981-09-29
Granted: 1984-07-30
Abstract: A weft knitting machine permits immediate alteration of wale size and density over any course. A needle(4) connects to a jack(37) that extends into a needle groove(21) and is partially overlaid by a spring(31)-loaded selector jack(30), itself overlaid by a selector bar(22). A pair of selectors, each with a number of projecting stude(25), divide needles into two sets. If needles are to knit large wales, the selector studs are moved to positions where they contact and press down butts(26) on the selector bars, with the result that for the selected needles, the selector jack and needle jack are held down, and a butt(38) on the needle jack goes to a high-butt position where it avoids jack pressers and rides along a high-butt knitting cam for large-wale knitting.
Patent KR-830001969-B1 (KR)
Title: 6―｛D―(―) α-(4―에틸-2. 3-디옥소-1 피페라지노카보닐아미노) 페닐(또는 하이드록시페닐)아세트아미도 페니실란산 및 그 염의 제조방법
IPC: C07D499/64
Filed: 1981-10-06
Granted: 1983-09-29
Abstract: 내용 없음.
Patent KR-890002598-B1 (KR)
Title: Blanking apparatus
Inventor: KONO SIGEYOSHI
IPC: B21D28/06
Filed: 1981-12-15
Granted: 1989-07-20
Abstract: The punch unit (61) is slidable laterally to the direction of feed of the workpiece (s).  The end (81) can move laterally or the width of the end is adapted to the length of lateral travel of the punch unit.  Several tool sets are fitted in the material advance direction, spaced so that the tools can be operated optionally either singly, or together via the ram end.  The punch unit (61) is fitted detachably on a support (35) while the support is slidable laterally to the advance direction of the material strip. As the measure changes with the shape of the blank which will make the blanking in the strip, the blanking unit can change the blanking tools very easy.
Patent KR-900003416-B1 (KR)
Title: Process for the preparation of rigid polyurethane foams
Inventor: NAKA REISI
IPC: C08G18/00
Filed: 1983-04-11
Granted: 1990-05-18
Abstract: In prodn. of rigid polyurethane foams from (1) polyols and (2) isocyanates, in the presence of catalysts, expanding agents and foam stabilisers, the polyol is composed of (a) 64-66 pts.wt. of tetra- functional tolylenediamines-polyol, (b) 14-16 pts.wt. of difunctional propylenes-polyol, (c) 5-7 pts.wt. of octa-functional sucroses-polyol and (d) 13-15 pts.wt. of tri-functionaldiethanolamines-polyol. Compsn. (raw materials) has improved fluidity and resulting foams have improved heat conductivity, and are released from the mould easily.
Patent KR-870000272-B1 (KR)
Title: Process for preparing 2-(((5-(dimethylamino)methyl-2-furanyl)methyl)thio)ethane amine
Inventor: HRIBAR-KIKELJ ALENKA
IPC: C07D/
Filed: 1983-06-20
Granted: 1987-02-23
Abstract: The title compd. (I)[R=NH2  was prepd. Thus, ethanol. I[R=OH  in CH2Cl2 was reacted with SOCl2 in CH2Cl2 at room temp. to yield chloride.I[R=Cl , which was treated with NH3 in MeOH in 4-5hr to give 46% I[R-NH2  based on I[R=OH . (I) is a synthon for preparing rantidine which inhibits the secretion of gastric acid.
Patent KR-890001120-B1 (KR)
Title: Process for producing barium ferite particles
Inventor: NORIMIZI NAKAI
IPC: G11B5/706
Filed: 1983-08-30
Granted: 1989-04-24
Abstract: Barium ferrite particles suitable for magnetic recording media are produced by autoclaving an alkaline suspension contg.  α -FeO (OH) particles of a specific surface area 10-25 m2/g and Ba ions at 250- 360≰C.  The α -FeO (OH) particles have an apparent density not more than 0.08 g/cm3 and a tap density not more than 0.2 g/cm3.  The Ba ferrite particles are useful for use in perpendicular recording tapes.
Patent KR-880001809-B1 (KR)
Title: Process for producing adult t cell leukemia associated antigens
Inventor: SAWADA TAKASHI
IPC: G01N33/531
Filed: 1983-09-30
Granted: 1988-09-19
Abstract: Prepn. of an adult T cell leukemia-asocd. antigen from an adult T cell leukemia-assocd. antigen-bearing cell, esp. human MT-2 comprises (a) incubating the cells in surfactant, e.g. Na deoxycholate, octylphenoxypolyethoxyethanol, or polyoxyethylene (10) otcylphenyl ether; (b) dialyzing the antigen-surfactant mixt. to remove surfactant and centrifuging the remaining mxit. to provide a supernatant liq. contg. the antigen.  The antigen is used for detecting adult T cell leukemia-assocd. antigen-specific antibodies in blood samples by immunoassays.
Patent KR-920000947-B1 (KR)
Inventor: YASUNOBU SAGE
IPC: B61L27/00
Filed: 1983-12-13
Granted: 1992-01-31
Abstract: 내용 없음.
Patent KR-900000895-B1 (KR)
Title: Dewaxing process of hydrocarbon remains (dregs)
Inventor: IWAYAMA GASUYOSI
IPC: B01J29/70
Filed: 1984-02-02
Granted: 1990-02-17
Abstract: A process for dewaxing a hydrocarbon fraction comprises contacting the fraction with hydrogen in the presence of a catalyst contg. a zeolite having a specified X-ray diffraction pattern and a mesitylene adsorption of at least 1.6 wt.%.  The zeolite has a formula (1±0.2) M2/nO Al2O3 xSiO2 yH2O[M= alkali metal or alkali earth metal; n=valence of M; x=15-60; y=0-25 .
Patent KR-870001953-B1 (KR)
Title: Disc torquing apparatus
Inventor: SYOJI MAGODO
IPC: G11B19/00
Filed: 1984-02-25
Granted: 1987-10-23
Abstract: This invention is concern with a disc driver which is used with the recording mechanism.  This is used to record the data and revive them.  In order to record or revive the signal, floppy disc is used.(fig-1)  A cpu and a floppy disc control circuit(5) controls the drivers(1),(2),(3),(4), when floppy-disc control circuit (5)-(Daisy chain method.) is used, the circuit of the signal application sends signal Lu(what is called-in use).  The control signal of the driver(L1, L2, L3, L4) is applied, which is drive select signal.  By driving the disk driver selectively, we obtain disc driver which is able to reduce the consumption of the electrical power.
Patent KR-910002548-B1 (KR)
Inventor: HRAVA LORENS G
IPC: A01K87/00
Filed: 1984-02-29
Granted: 1991-04-24
Abstract: 내용 없음.
Patent KR-870000303-B1 (KR)
Title: Image fiber photographying apparatus
Inventor: ONO KIMIZO
IPC: A61B1/24
Filed: 1984-04-19
Granted: 1987-02-26
Abstract: The optical system forms the image of the object at the front end of the transmission line. A reflex mirror reflects the light from the object and directs it towards the optical system. The transmission line is accommodated in a flexible cable and has an image fiber comprising a bundle of picture element fibers. An image receiver is provided at the end of the transmission line. The image is pref. reflected an even number of times.
Patent KR-860001721-B1 (KR)
Title: Roller bearing unit for linear slide
Inventor: TERAMACHI HIROSHI
IPC: F16C29/00
Filed: 1984-05-25
Granted: 1986-10-18
Abstract: The bearing has a track rod(1) with horizontal guide webs(2,3), having surfaces(4-7) for loaded rollers. A movable table(8) engages around the track rod, and has longitudinal recesses(11,12) in edge sections(9,10). Bearing blocks(15,16) are screwed to the edge sections, each having a guide web(18-21), with running surfaces(22- 25) for loaded rollers, and running surfaces(26-29) for unloaded rollers. Drum-shaped rollers(3) move on the running of the bearing blocks, and engage on those of the track. Cages (32-35) are fastened to each guide web, opposite the inclined surfaces of the bearing blocks, so that the rollers can move in the space between cage and inclined surfaces.
Patent KR-890003686-B1 (KR)
Title: Word processor
Inventor: DAKAHASI HIROMASA
IPC: G06F17/21
Filed: 1984-05-29
Granted: 1989-09-30
Abstract: The word processor for inputting particular patterns including foreign characters includes a layout display (18) composed of NxM dots for displaying the character array corresponding to one page, a LCD controller (19) for setting the area with nxm dots in the region for displaying the layout as pattern inputt area, a keyboard (13) for controlling the dot position, and a memory (20) for storing the pattern data.
Patent KR-890001358-B1 (KR)
Title: Method for receiving teletexts
Inventor: JONG SANG-HYON
IPC: H04L17/16
Filed: 1984-05-29
Granted: 1989-04-29
Abstract: The teletext data included in vertical retrace period of ordinary broadcasting signal is selected with reference level by sample and hole method in a teletext datection cct. (15) drived by a microprocessor (13).  The selected data is applied to character and graphic data process cct. (16) for decoding it with program of a teletext ROM (14).  The decoded image signal is provided to a CRT (12) through an image signal generator (17) and a switch cct. (11).
Patent KR-890004212-B1 (KR)
Title: Complementary logic circuit
Inventor: OHOBA OSAMU
IPC: H03K19/0944
Filed: 1984-07-05
Granted: 1989-10-27
Abstract: The complementary logic IC comprises a first voltage supply source and a second voltage supply source having a lower potential than the first voltage supply source.  An output stage circuit is provided having a p-channel vertical FET (V-FET) and an n-channel V-FET, with drains connected to each other to form an output for outputting an output signal.  Each of the p-channel and n-channel V-FEt's has a source connected to the voltage sources, respectively.  An input stage circuit is provided formed of a first MIS-FET having one conductivity type channel and a second MIS-FET having an opposite conductivity type channel with respect to the first MIS-FET.
Patent KR-890004202-B1 (KR)
Title: Self-closing valve operated electrically
Inventor: IKENAGA DAKAO
IPC: E03D5/10
Filed: 1984-07-12
Granted: 1989-10-27
Abstract: The water tap comprises a first sensor (3) sensing the user existance, a second control circuit opening the valve while the user is sensed and closing it otherwise, a second sensor (4) touched by the user, a second control circuit opening the valve with the first touch and closing it with the second touch, and a selector operating the valve so that the first control circuit is selected when the first sensor senses the user firstly, otherwise the second control circuit is selected.
Patent KR-870001300-B1 (KR)
Title: Liquid measuring method using air pressure power
Inventor: KIM JONG-HWAN
IPC: G01F23/14
Filed: 1984-08-02
Granted: 1987-07-11
Abstract: A liquid measuring container(6) has a inhale hole(9), a exhale hole(10), and a air hole(8).  The measuring device is made of a compressing pipe(1) of a constant width and lenght and its upper portion is opened.  A pressure ransfer pipe is made under the pipe(1) and its upper portion is projected in the compressing pipe with some height.  A reciprocating compressor body(5') is provided in the pipe and adjusted by a acting lever(4).  The position of this body(5') is measured by a gauge board(13).  A liquid(3) is contained in the pipe with a midium height of the projected protion.  The pressure transfer pipe(2) is connected with the measuring hole(7) by a connecting pipe.
Patent KR-900008593-B1 (KR)
Inventor: SENDER WENDEL
IPC: G11B20/10
Filed: 1984-10-31
Granted: 1990-11-26
Abstract: 내용 없음.
Patent KR-900004004-B1 (KR)
Title: Circuit for selecting and locking in operation function circuitry
Inventor: PORCHER THOMAS C
IPC: G06F3/14
Filed: 1984-11-13
Granted: 1990-06-07
Abstract: The microprocessor (19) generates first and second data signals in response to instruction signals from the computer (11) or from the keyboard (25), and generates first and second clock control signals in response to instruction signals respectively from the computer and the keyboard. Logic circuitry is formed to provide an impedible signal path over which the first clock control signal may pass when not impedel to cause the operational function circuitry to be turned 'on'. Alternatively the circuitry is turned 'off', and is formed to provide a second signal path over which the second clock and signals may pass to cause the operational function circuitry to be turned 'on' or alternatively turned 'off'.
Patent KR-920009793-B1 (KR)
Inventor: CAMPBELL FREDERICK
IPC: C07C327/20
Filed: 1985-03-19
Granted: 1992-10-22
Abstract: 내용 없음.
Patent KR-900005492-B1 (KR)
Title: Tieline control
Inventor: CHEIB THOMAS J
IPC: G01R21/00
Filed: 1985-04-15
Granted: 1990-07-30
Abstract: A target consumption (KWM) is selected, and the fraction of cycle elapsed (FIC) is timed. The product KEM.FIC gives the target consumption to the instant of calculation. The difference between the target, KWM.FIX, and the actual consumption divided by the time remaining in the cycle gives the correction factor (KWC). The value can be used for manual adjustments to loads and auxiliary generators or this can be carried out automatically by switchgear controlled from the correction factor calculator.
Patent KR-920009210-B1 (KR)
Title: Mechanism to control the movement of weft insertion members in shuttless weaving looms
Inventor: PEZZOLI LOUISE
IPC: D03D47/12
Filed: 1985-06-07
Granted: 1992-10-15
Abstract: In a mechanism to control the movements of the weft carrying grippers in shuttleless weaving looms - of the type wherein a gearwheel controlling the grippers carrying strap is caused to rotate forward and backward by a variable pitch cam screw, crossing longitudinally a slider which moves forward and backward along a forced rectilinear path - said slider carries means for engaging the threading of said screw and apt to cause the rotation thereof, comprising opposed pairs of oscillating sliding blocks.
Patent KR-890002355-B1 (KR)
Title: Sealed type electrically operated compressor
Inventor: KWON KI-BONG
IPC: F04B39/02
Filed: 1985-07-23
Granted: 1989-07-01
Abstract: A sealed type electric compressor improves for increasing the discharge with multiple cylinders in a relatively small enclosure and mitigating the pulsation of high pressurized coolant from the cylinders.  The sealed type electric compressor includes a motor part comprising a rotator (6), a stator (5), an impeller, and a rotating shaft (7) having an eccentric cam at its top portion, and compressing parts (11) comprising several cylinders (9) with pistons (10) connected to the eccentric cam with an eccentric roller (8).  The compressing parts are arranged with the same intervals on the same surface of a frame (4), and the pistons connected with an eccentric roller are reciprocating in sequence.  A T-shaped lubricant feeder (20) is fixedly mounted on the rotating shaft.
Patent KR-890001419-B1 (KR)
Title: Preparation for making method of aluminium magnesium hydroxy carbonate
Inventor: KIM YONG-BAE
IPC: C01F7/16
Filed: 1986-02-17
Granted: 1989-05-03
Abstract: Suspend Al(OH)3 (53% as Al2O3) 30.6g and Mg(OH)2 (66% as MgO) 58.2g into water 300ml, add Na2CO3 aq. soln. (99% Na2CO3 44g in water 100ml) to the above soln., heat for 2-3hr at 70-100 deg.C to prepare pptn., washing with water 3 liter, and dry at 80 deg.C to give the title compd. 97.5g.  Prepg. compd. is useful for treating gastroenteric disorder.
Patent KR-940009092-B1 (KR)
Title: Valve for chemical containers
Inventor: JOSEPH FRANK
IPC: B65D83/14
Filed: 1986-06-10
Granted: 1994-09-29
Abstract: A sliding valve for withdrawing liquid or gaseous chemical products from a container has a cylindrical valve spool which slides axially in a bore through a valve housing. A first annular groove of the valve spool connects, in the open position of the valve, a product supply line to a product withdrawal line. On one side of this first annular groove there is a second annular groove which, in the open position, connects a gas supply line to a gas withdrawal line. An annular groove on the other side is connected to the second annular groove. By this arrangement, protective gas is admitted to the valve spaces on either side of the first annular groove, which handles the product, with the result that escape of the product to the outside, or penetration of impurities, are positively prevented.
Patent KR-930008952-B1 (KR)
Title: Process for preparng controlled release implants for the administration of reconbinant growth hormone
Inventor: JANSKI ALVIN M
IPC: A61K9/22
Filed: 1986-07-15
Granted: 1993-09-17
Abstract: The present invention provides improved controlled release implants for subcutaneous administration to an animal of a growth promoting amount of a recombinant protein having growth hormone activity, characterised in that said protein is present in a form having a salt content of less than 5% by weight based on the weight of said protein.
Patent KR-920002315-B1 (KR)
Title: Polypeptides complementary to peptides or proteins having an amino acid sequence or nucleolide coding sequence at least partially known and methods of design therefor
Inventor: EDWIN BLALOCK J
IPC: C12Q1/68
Filed: 1986-02-24
Granted: 1992-03-21
Abstract: Antibody to a polypeptide is provided, in which the polypeptide is complementary to at least a portion of a peptide ligand and characterised by said antibody having an affinity for a receptor site at which the peptide ligand binds and transmits its hormonal effects.
Patent KR-950013888-B1 (KR)
Inventor: BYRD RUSSELL A
IPC: E04H6/18
Filed: 1987-05-15
Granted: 1995-11-17
Abstract: 내용 없음.
Patent KR-910001600-B1 (KR)
Inventor: SAITO HIROYUKI
IPC: B01J2/12
Filed: 1987-11-18
Granted: 1991-03-16
Abstract: 내용 없음.
Patent KR-960003321-B1 (KR)
Inventor: LORIS JACOPO BONONI
IPC: C07D233/60
Filed: 1987-12-19
Granted: 1996-03-08
Abstract: 내용 없음.
Patent KR-900007444-B1 (KR)
Title: Method for producing a continous casting for deep drawing
Inventor: SON JAE-WOONG
IPC: C21C7/10
Filed: 1987-12-28
Granted: 1990-10-10
Abstract: In a blowing converter the last stage of the blowing is carried out under a hard blowing for the purpose of adjusting carbon to 0.14- 0.021% and ratio of oxygen/carbon to 3.0-6.0. The sulphur amount in melts is adjusted to up to 0.01 wt.% by carrying out the conventional desulfurizing method, but the final carbon amount is adjusted to 0.002 wt.% by carrying out decarbonizing treatment under RH vacuum condition of 210-250 toor beginning vacuum, 1 toor middle vacuum and 6.5-8.0 Nl/min/t.S Ar gas flowing rate.
Patent KR-930002423-B1 (KR)
Inventor: LEE SMITH R
IPC: F16D65/14
Filed: 1986-04-11
Granted: 1993-03-30
Abstract: 내용 없음.
Patent KR-910002723-B1 (KR)
Inventor: FUJII MAMORU
IPC: B23K26/00
Filed: 1987-02-26
Granted: 1991-05-03
Abstract: 내용 없음.
Patent KR-910008539-B1 (KR)
Inventor: DANAKA DOSINORI
IPC: H02K15/02
Filed: 1988-05-12
Granted: 1991-10-18
Abstract: 내용 없음.
Patent KR-950000855-B1 (KR)
Title: Aluminum film depositing method and apparatus
Inventor: YUN KI-CHON
IPC: H01L21/285
Filed: 1988-12-26
Granted: 1995-02-02
Abstract: The sputtering apparatus includes a RF power supply unit (1), a matching circuit unit (2) and a vacuum vessel (4). The method includes connecting a substrate (8) in the vessel (4) to a DC power supply unit (3) for voltage variableness, attaching an Al target (7) to an electrode (6), and applying a DC voltage of 20-30 V to the substrate (8) under the ultra high vacuum state of 2×10-8 torr. and for a constant period (t), i.e., t = αVsV/VtA (where α is the proportional constant, Vs is the bias voltage applied to the substrate, Vt is the voltage applied to the target, and V is the sputtering rate), thereby depositing a thin aluminum film of a dense structure on the substrate.
Patent KR-930002050-B1 (KR)
Inventor: HASEGAWA TAKASHI
IPC: H01F41/06
Filed: 1989-02-21
Granted: 1993-03-22
Abstract: 내용 없음.