baber/WOPTO huggingface dataset:
Patent GB-2593242-A (GB)
Title: Alignment method and apparatus for monomolecular layers
Inventor: Igor Vozyakov
IPC: B01F25/64
Filed: 2020-08-21
Abstract: Disclosed is a method of aligning nano-platelets in a suspension. The method involves providing a suspension of the nano-platelets 20-1 in a liquid 15, bubbling a gas 22 through the suspension and providing a second liquid layer (fig 9 16) that is immiscible with the liquid of the suspension. The gas bubbles orientate the nano-platelets which then, at least partially move into the second liquid. Preferably the nano-platelets self-assemble into an ordered structure at the interface 13 of the liquid of the suspension. This self-assembled structure may be in a vertical (fig 9 20-3) or horizontal configuration 20-2. Also disclosed is an apparatus (Fig 1 3) for aligning nanoplatelets in solution by bubbling a gas through a suspension of nanoplatelets with a second, immiscible, liquid layer that allows nano-platelets to at least partially move into it. Also disclosed is a metamaterial. The metamaterial is formed by aligning nano-platelets in an orientation in a suspension and fixing the orientated nano-platelets relative to one another to form a meta-material of ordered nano-platelets. The nano-platelets of the metamaterial may be orientated so that they all lie substantially within the same plane.
Patent GB-2592118-A (GB)
Title: Dental floss stick
Inventor: PENG LI
IPC: A61C15/04
Filed: 2020-12-29
Abstract: A dental floss stick comprises an upper piece 1 and a lower piece 2 which are both U-shaped, the top of both arms of the U-shaped upper piece 1 and lower piece 2 being rotatably connected by joints. The upper part of both arms of the upper piece have a bulge 3 while those of the lower piece each have a corresponding groove 4. Further, the middle parts of the upper piece and lower piece comprise a female buckle 5 and a corresponding male buckle (10, fig.6) respectively, with the upper piece further comprising a handle 9. A dental floss (7, fig.1) extends between both arms of the upper piece, wound or tied to each arm above the bulge 3. Meanwhile, a blade (8, fig.5) is located at the position of the groove 4, arranged to cut the dental floss when the upper piece 1 and lower piece 2 are brought together by rotating. The dental floss stick can be reused by replacing the floss.
Patent GB-2595358-A (GB)
Title: Alternator support with alignment features
Inventor: THOMAS JENNINGS
IPC: F02B77/00
Filed: 2021-04-07
Abstract: An alternator support for an engine is provided. The alternator support includes a base portion 12 for mounting to the engine, a first cantilever portion 14 and a second cantilever portion 16 extending in opposite directions from the base portion for supporting one or more alternator(s) and/or an engine component such as a compressor thereon. The support may include an arm 40 extending outwardly from and transversely to the second cantilever portion for aligning the alternator support in relation to the engine and an arm (40a, fig.5) extending from the base portion also for aligning the alternator support in relation to the engine.
Patent GB-2605846-A (GB)
Title: Improvements in or relating to plastic recycling
Inventor: ANDREW BURNS
IPC: C08J11/08
Filed: 2021-04-18
Abstract: A method of recycling plastics comprises dissolving polyolefin in at least one solvent by dissolution in a reactor vessel, one or more contaminants are removed from the solution, the solvent is separated from the polymer and the polymer extruded for re-use, wherein a chain extender is introduced prior to extruding. Embodiments are described using a peroxide in a solution of PE/PP and butylal, colour pigments are filtered out and the solution is fractionated by polymer molecular weight selectively before and after the peroxide is added. The method lends itself to commercial scale processing with reactor vessels of 1,000 litres and greater by use of a fast dissolution reactor.
Patent GB-2593370-A (GB)
Title: Downhole barrier and isolation monitoring system
Inventor: MARK S HOLLY
IPC: E21B47/01
Filed: 2019-02-26
Abstract: A status of an isolation barrier can be determined by comparing data collected by a sensor below the isolation barrier to data collected by a sensor above the isolation barrier. A sensor assembly can be coupled to an isolation barrier assembly downhole from the isolation barrier assembly for collecting data related to a characteristic of the wellbore. The sensor assembly can transmit the data collected to a tool positioned up-hole from the isolation barrier. The tool can transmit the data to a surface of the wellbore. The sensor assembly can be powered by a battery pack or via a connection to a downhole tool that supplies the power to the sensor assembly. The downhole tool that receives the data from the sensor assembly (and optionally provides power to the sensor assembly) can be inserted and removed from the wellbore over the lifetime of the well.
Patent GB-2597370-A (GB)
Title: Transformed geometry data cache for graphics processing systems
Inventor: Robert Brigg
IPC: G06T15/00
Filed: 2018-12-21
Abstract: The graphics processing system includes rendering space sub-divided into tiles to which primitives can be associated. The cache includes memory storing transformed primitive blocks for rasterization phase processing, the memory (1102) being sub-divided into subdivisions (1302, 1304, 1306), each block comprising transformed geometry data for primitive(s). Control logic receives a new block for memory storage, the new block being associated with a number of the tiles. The logic determines which subdivision to store the new block based its associated number of tiles, the new block then being stored in the sub-division. Also disclosed is a counter being maintained (1404) for each block stored in the cache that indicates a number of the tiles that are currently being processed by rasterization logic and require access to that block, the counter being updated when any logic stage indicates a tile no longer requires access to the block. In response to receiving (1406) a new transformed primitive block to be stored in the cache when the cache is full (1408), a transformed primitive block is selected (1410) and evicted (1412) from the cache based on the counters associated therewith. A new block may then be stored (1414).
Patent GB-2596653-A (GB)
Title: Compositions comprising bacterial strains
Inventor: IMKE ELISABETH MULDER
IPC: A61P1/00
Filed: 2018-06-14
Abstract: Described are compositions comprising Eubacterium contortum for use in the treatment or prevention of inflammatory bowel disease such as Crohn’s disease or ulcerative colitis. The composition may be used in patients with elevated IL-17 or Th17 levels. The Eubacterium contortum strain may be MRX050.
Patent GB-2595380-A (GB)
Title: Scanning systems configured to inspect conveyed objects and related systems and methods
Inventor: STEVEN N URCHUK
IPC: G01V5/00
Filed: 2020-02-03
Abstract: Scanning systems for performing computed tomography scanning may include a stator, a rotor supporting at least one radiation source and at least one radiation detector rotatable with the rotor, and a rotator operatively connected to the rotor to rotate the rotor relative to the stator. A conveyor system may include a respective conveyor extending through the rotor of the scanning system. A control system operatively connected to the scanning system and the conveyor system may be configured to automatically and dynamically increase a rate at which the rotor moves, decrease a rate at which the respective conveyor moves, and/or adjust other system parameters when the control system enters a finer pitch mode and to automatically and dynamically decrease a rate at which the rotor moves, increase a rate at which the respective conveyor moves, and/or adjust other system parameters when the control system enters a coarser pitch mode.
Patent GB-2612603-A (GB)
Title: Method for encapsulating a magnet and assembly
Inventor: THOMAS LESLIE
IPC: H01F41/02
Filed: 2021-11-04
Abstract: An assembly 12 comprises a housing 16, at least one magnet 18 arranged in the housing such that the housing covers at least a first portion P1 of the magnet and exposes at least a second portion (P2, Figure 1) of the magnet, and a plastic material 20 moulded (for example by injection moulding) onto at least a portion (P3, Figure 1) of the housing and at least the second portion P2 of the magnet, such that the housing and the plastic material form a capsule 22 encapsulating the magnet. The housing 16 is preferably plastic and may comprise a first housing element 24, a second housing element 26, and a hinge (28, Figure 3) by which the housing elements are articulated and connected with each other. The first and second housing elements may be folded together and snapped together to secure the housing in its closed state. A method of encapsulating at least one magnet is also provided. The magnet is encapsulated such that no surface of the magnet is exposed, thereby avoiding corrosion of the magnet.
Patent GB-2613801-A (GB)
Title: Bend resistor
Inventor: DONALD INNES WALLACE
IPC: H02G15/007
Filed: 2021-12-14
Abstract: An apparatus 200 suitable for resisting bending of an elongate and flexible member (figure 1a, 150). The apparatus 200 comprises an elongate inner support structure 202 which defines an axial bore 254 suitable for receiving an elongate and flexible member (figure 1a, 150) subject to bending in use. The apparatus 200 further comprises at least one outer layer 208 comprising a plurality of fibres embedded in a polymer matrix, wherein each fibre is helically arranged along the outer layer and configured to resist a tensile force during said bending in use. The fibres reinforce the bend limiting apparatus 200. A method of manufacturing the apparatus 200 is also disclosed. The inner support structure 202 may comprise a plurality of coaxially arranged annular portions, such as a closed-pitch tension helical spring 202.
Patent GB-2604037-A (GB)
Title: Enhancing drug activity through accentuated buccal/sublingual administration
Inventor: DEBASISH BANERJEE
IPC: A61K31/00
Filed: 2019-07-28
Abstract: The invention describes an entirely novel approach to sublingual administration of drugs where in the principal drawback in the process, inadequate penetration through the buccal mucosa within the duration of stay the drug in the mouth, is overcome by the use of permeability enhancers. These compounds enhance the passage of the drug through the buccal mucosa and permeability to the active site. Here we have enhanced the permeability of glipizide and alprazzolam by their use. In the first case the activity of glipizide is enhanced 32 times and in the 2nd case the acivity of alprazolam by 2 times approximately. An advantage of enhancing the activity glipizide is that it obliterates the use of metformin thereby making the product much safer for use and effective in situations of diabetic coma and lactic acidosis.
Patent GB-2607667-A (GB)
Title: A magnetic sensing system
Inventor: JOCHEN SCHMITT
IPC: G01R33/00
Filed: 2022-03-22
Abstract: A magnetic sensor system 2 includes a magnetic sensor package 200 comprising a magnetic single turn sensor and a magnetic multi-turn sensor, and a shield for shielding the sensors from stray magnetic fields. The shielding arrangement comprises a ferromagnetic tube or sleeve 206 that houses one or more magnets 208 and connects to an end of rotating shaft 204, such that rotation of the shaft rotates the ferromagnetic tube and magnets. The magnetic sensor package is positioned on a surface of a substrate 202. A further shielding element may be arranged proximate to the sensors, for example on the opposite side of the substrate (figures 3 and 4) or directly between the substrate and the ferromagnetic tube (figures 5 and 6). The further shielding may be a disc or a ring of ferromagnetic material, or a flange. The multi-turn sensor may be giant magnetoresistive (GMR) or tunnel magnetoresistive (TMR). The angle sensor may be an anisotropic magnetoresistive sensor (AMR) or a Hall sensor.
Patent GB-2618086-A (GB)
Title: A heating system for a three-dimensional (3D) printer
Inventor: ANDREW DICKSON
IPC: B29C64/295
Filed: 2022-04-25
Abstract: A heating system 1 for use with a 3D printer (such as material extrusion system), comprising an infrared heat source 20 that is configured to be proximal to a printhead 500 of the 3D printer, to (a) heat the material as it is extruded and deposited on a substrate, and to (b) apply heat in form of a heat footprint 22 to an area below, including the substrate and the deposited material, after the material is deposited and starts to cool. Preferably, the heat source is mounted coaxially around the printhead and has a variable power output. The system may further comprise a non-contact thermal sensor and a control unit to control the temperature of the heat source such that the temperature of the deposited material is maintained at its glass transition temperature. The system may be retrofittable to the 3d printer. A method for controlling material deposited from a 3d printer is further included.
Patent GB-2612269-A (GB)
Title: Detecting wellpath tortuosity variability and controlling wellbore operations
Inventor: ROBELLO SAMUEL
IPC: E21B49/00
Filed: 2020-12-15
Abstract: Methods and systems for determining wellpath tortuosity are disclosed. In accordance with an embodiment, a tortuosity of a borehole segment is determined and a tortuosity of a casing associated with the borehole segment is determined based, at least in part, on the tortuosity of the borehole segment and a path conformity characteristic of the casing. A tortuosity variation factor is generated based on a value of the tortuosity of the casing relative to a value of the tortuosity of the borehole segment.
Patent GB-2619807-A (GB)
Title: A magnetic sensor
Inventor: CHRISTOPHER STRAUSS
IPC: G01D4/02
Filed: 2023-04-21
Abstract: A magnetic sensor 10 has first and second magnetic sensors 12,14 (e.g. hall sensors) orientated at an angle C of between 40-70 degrees with respect to a cylinder plane of a diametrically magnetised cylinder 18 (fig 3). The first and second magnetic sensors are located at opposite ends of the cylinder in relation to its central axis B (fig 3). The e.g. hall sensors may be unidirectional sensors each having two output triggers, one output triggers on detection of magnetic north and the second output triggers on detection of magnetic south. Analysis of the sensor outputs by a processor 34 determines if the cylinder is rotating, a rate of rotation, and if the cylinder is static the static position of the cylinder. The direction of rotation may also be calculated. Preferably the magnetic sensor for use in a water meter.
Patent GB-2615918-A (GB)
Title: Energy storage arrangement and installations
Inventor: Peter Konowalczyk
IPC: F24D19/10
Filed: 2021-08-02
Abstract: A hot water supply system includes a thermal energy store 10 containing a thermal energy storage medium, the store receiving energy from a renewable energy source 16. Water heated by the renewable energy source and/or the thermal energy store to a target supply temperature is supplied to a hot water outlet 22, which has a given flowrate when fully open. The thermal energy store has sufficient capacity when fully charged to provide hot water at the given flowrate and the target supply temperature for a period of at least 8 minutes. A processor 30 controls pre-charging of the thermal energy store so that sufficient energy is stored to satisfy a predicted demand based on a monitored demand. The renewable energy source may be a heat pump or a solar water heating arrangement. An auxiliary water heater 44 may be located between the thermal energy store and the outlet. The processor may also use occupancy sensors, weather forecast data, or occupant calendar information to predict demand. A corresponding method is also claimed.
Patent GB-2616389-A (GB)
Title: Defense of targeted database attacks through dynamic honeypot database response generation
Inventor: MARCO SIMIONI
IPC: G06F21/55
Filed: 2021-11-08
Abstract: Techniques that include receiving a query intended for a targeted database (702) and determining that the query is from an unauthorized user (704). A response is returned to the unauthorized user generated by a model, the response being dynamically generated to fulfill the query. The model is configured to generate responses consistent with any previous responses returned to the unauthorized user (706).
Patent GB-2616793-A (GB)
Title: Methods and consumer products for detecting a metabolite
Inventor: ELIZABETH M DONEY
IPC: G01N30/72
Filed: 2020-12-07
Abstract: Methods and consumer products for detecting a metabolite, the method comprising: testing a urine sample from a subject for a metabolite selected from the group consisting of androstenediol, oxtenedioate, digydrouracil, heptanoylglutamine, pregnenetriol, sulfate, heptenoylglutamine, hexanoylglutamine, guanine, methylhexanoylglutamine, hexanoylglycine, hexenoylglycine, spermidine, diacetylspermine, acisoga and combinations thereof; and producing a metabolic profile for the metabolite.
Patent GB-2618720-A (GB)
Title: Low complexity enhancement video coding
Inventor: GUIDO MEARDI
IPC: H04N19/33
Filed: 2020-03-18
Abstract: Examples of a low complexity enhancement video coding are described. The claimed invention relates to a bitstream for transmitting one or more enhancement residuals planes to be added to a set of preliminary pictures that are obtained from a decoder reconstructed video. The application is to bitstream for transmitting one or more enhancement residuals planes suitable to be added to a set of preliminary pictures obtained from a decoder reconstructed video, comprising: a decoder configuration for controlling a decoding process of the bitstream and encoded enhancement data comprising encoded residual data representing differences between a reference video frame and a decoded version of the video frame. The encoded enhancement data is comprised in one or more payloads with each payload comprising a first flag indicating how a portion of the payload is encoded. A related decoding process is also claimed.
Patent GT-197225295-A (GT)
Title: Compuestos organicos.
IPC: A61K/
Filed: 1972-07-13
Abstract: SE REFIERE A UNA CLASE ESTABLE DE BENCILACRILONITRILOS Y A LOS METODOS DE HACER LOS TALES COMPUESTOS. TAMBIEN SE REFIERE A LA VALUACION DE LOS TALES COMPUESTOS PARA SU USO EN TANTO COMO UN PROCESO MEJORADO PARA PREPARAR 5BENCILPIRIMIDI NAS. TIENE LA ESTRUCTURA QUIMICA CONTENIDA EN LA FICHA TEC NICA RESPECTIVA. PUEDEN SER USADOS PARA LA PREPARACION DE BENCILPIRIMIDINAS O OTROS SISTEMAS DE ANILLO HETEROCICLICO.
Patent GT-198066410-A (GT)
Title: Metodo para tratar con petroleo azufre insoluble.
IPC: C01B17/12
Filed: 1980-11-18
Abstract: SE REFIERE A UN METODO PARA TRATAR CON PETROLEO AZUFRE INSO LUBLE. EL PETROLEO DE PROCESAMIENTO USADO PARA TRATAR AZUFREINSOLUBLE SE MEZCLA CON YODO PARA INHIBIR SU EFECTO SOBRE LAPROPORCION DE REVERSION DEL AZUFRE INSOLUBLE.
Patent GT-200200225-A (GT)
Title: Compuestos retinoides heterociclicos
Inventor: KLAUS MICHAEL
IPC: A61P17/02
Filed: 2002-10-31
Abstract: LA PRESENTE INVENCION SE REFIERE A NUEVOS COMPUESTOS RETINOIDES HETEROCICLICOS DE FORMULA GENERAL (I) EN DONDE A,B,Z,N,Y,R1,R2,R3,R4,R5, SON GRUPOS FUNCIONALES DESCRITOS EN EL EXPEDIENTE. ESTOS COMPUESTOS MODULAN LA PROLIFERACION DE CELULAS EPITELIALES, MORFOGENESIS EN EL PULMON Y DIFERENCIACION POR LO QUE SON DE UTILIDAD EN TRASTORNOS OBSTRUCTIVOS CRONICOS DE LAS VIAS RESPIRATORIAS TALES COMO ENFISEMA, ASMA. ADEMAS SE MENCIONA DE UTILIDAD EN CANCER, TRASTORNOS DERMATOLOGICOS.
Patent GT-200600396-A (GT)
Title: Dispositivos para la aplicacion de medicamentos transdermicos conteniendo o-desmetil venlafaxina (odv) o sus sales
Inventor: RAO TATAPUDY
IPC: A61K31/135
Filed: 2006-08-31
Abstract: LA PRESENTE INVENCIÓN DA A CONOCER DISPOSITIVOS PARA LA ADMINISTRACIÓN TRANSDÉRMICA DE FÁRMACOS (ES DECIR, PARCHES) QUE COMPRENDEN O-DESMETILVENLAFAXINA (ODV), UN INHIBIDOR SELECTIVO DE LA SEROTONINA Y NOREPINEFRINA QUE OFRECE LA VENTAJA DE ELIMINAR O REDUCIR LOS EFECTOS COLATERALES ADVERSOS ASOCIADOS CON LA ADMINISTRACIÓN ORAL DE ODV. TAMBIÉN SE PRESENTAN MÉTODOS PARA LA PREPARACIÓN Y USO DE ESTAS DISPOSICIONES PARA LA ADMINISTRACIÓN TRANSDÉRMICA PARA EL TRATAMIENTO DE LA DEPRESIÓN, TRASTORNOS DE ANSIEDAD, SÍNTOMAS VASOMOTORES Y DOLOR.
Patent GT-201300091-A (GT)
Title: Compuestos de furo (3,2-d) pirimidina
Inventor: CALDERWOOD DAVID J
IPC: A01N43/54
Filed: 2013-04-05
Abstract: LA PRESENTE INVENCIÓN SE REFIERE A NUEVOS COMPUESTOS DE FÓRMULA (I), SALES FARMACÉUTICAMENTE ACEPTABLES, METABOLITOS BIOLÓGICAMENTE ACTIVOS, PROFÁRMACOS, RACEMATOS, ENANTIÓMEROS, DIASTEREÓMEROS, SOLVATOS E HIDRATOS DE LOS MISMOS EN DONDE LAS VARIABLES SE DEFINEN COMO EN LA PRESENTE MEMORIA.LOS COMPUESTOS DE FÓRMULA (I) SON ÚTILES COMO INHIBIDORES DE QUINASA Y, COMO TALES SERÍAN ÚTILES EN EL TRATAMIENTO DE CIERTAS AFECCIONES Y ENFERMEDADES, ESPECIALMENTE LAS CONDICIONES Y ENFERMEDADES INFLAMATORIAS Y TRASTORNOS Y AFECCIONES PROLIFERATIVAS, POR EJEMPLO, CÁNCERES.
Patent GT-201400178-A (GT)
Title: Compuestos de oxazolidin-2-ona y usos de los mismos como inhibidores de la pi3ks
Inventor: GIORGIO CARAVATTI
IPC: C07D413/14
Filed: 2014-08-22
Abstract: LA PRESENTE INVENCIÓN SE REFIERE A OXAZOLIDIN-2-ONA COMPUESTOS DE PIRIMIDINA SUSTITUIDOS QUE ACTÚAN COMO PI3K (FOSFATIDILINOSITOL-3-QUINASA) INHIBIDORES, ASÍ COMO COMPOSICIONES FARMACÉUTICAS DE LOS MISMOS, MÉTODOS PARA SU FABRICACIÓN Y USOS PARA EL TRATAMIENTO DE AFECCIONES, ENFERMEDADES Y TRASTORNOS DEPENDIENTES DE PI3K.
Patent GT-201500012-A (GT)
Title: Derivados de carbamato/urea
Inventor: AUBERSON YVES
IPC: C07D401/14
Filed: 2015-01-20
Abstract: LA PRESENTE INVENCIÓN SE REFIERE A DERIVADOS DE CARBAMATO/UREA, SUS FORMAS SÓLIDAS, SU PREPARACIÓN, SU USO COMO MEDICAMENTOS. ESTOS COMPUESTOS SON ANTAGONISTAS DEL RECEPTOR H3 Y SON, ADEMÁS, POTENCIALMENTE ÚTILES EN EL TRATAMIENTO DE UNA AMPLIA GAMA DE TRASTORNOS, PARTICULARMENTE NARCOLEPSIA.
Patent KR-830000564-A (KR)
Title: Fin rudder for ships
Inventor: BRIX JOACHIM
IPC: B63H25/12
Filed: 1978-05-02
Abstract: The rudder assembly for awater craft includes a rubber(10) to the trailing edge of which a fin(20) is pivoted. The rudder & fin are independently actuatable by a power steering system. The fin is moved by hydraulic actuators & is provided with a hydro-pneumatic fin retard mechanism. Several separate fin sections may be employed, each of which is lockable in alignment with the rudder. Hydraulically actuatable bolts, catches, strap or a chain brake may be used.
Patent KR-830001916-A (KR)
Title: 구아니디노 티아졸 화합물의 제조방법
IPC: C07D417/12
Filed: 1980-03-06
Abstract: 내용 없음
Patent KR-830002636-A (KR)
Title: 부품의 공급제어장치
Filed: 1980-06-03
Abstract: 내용 없음
Patent KR-830004307-A (KR)
Title: 티에노 [3,2-c]피리딘의 제조방법
IPC: C07D495/04
Filed: 1980-12-19
Abstract: 내용 없음
Patent KR-830006342-A (KR)
IPC: C08F246/00
Filed: 1981-06-10
Abstract: Polymers and the process for producing polymers by the polymerization of at least three monomers wherein at least one monomer is selected from the group consisting of tetrafluoroethylene, trifluoromonochloroethylene, trifluoroethylene, vinylidene fluoride, 1,1-difluoro-2,2-dichloroethylene, 1,1-difluoro-2-chloroethylene, hexafluoropropylene, 1,1,1,3,3-pentafluoropropylene, octafluoroisobutylene ethylene, vinylchloride, trifluoronitrosomethane, perfluoronitrosoethane and alkyl vinyl ether, and at least one other monomer is selected from the group represented by the general formula:  <IMAGE>   and at least one monomer is selected from the group of monomers represented by the general formula:  <IMAGE>  These polymers are useful as ion exchange membranes in electrolytic cells, especially chlor-alkali electrolytic cells. Other uses include solid, strong acid catalyst useful in corrosive environments, electrodialysis and other similar membrane separation processes.
Patent KR-850005804-A (KR)
Title: 하역차량의 콘테이너 싣고내리기 제어장치
IPC: B60P1/48
Filed: 1984-02-09
Abstract: 내용 없음
Patent KR-840008438-A (KR)
Title: 공기-카본 아아크 금속 제거용 정전류 및 정전위 자동제어 시스템
IPC: B23K9/013
Filed: 1984-04-18
Abstract: 내용 없음.
Patent KR-860001557-A (KR)
Title: 재첩 및 미꾸라지 분말 제조방법
Filed: 1984-08-14
Abstract: 내용 없음