baber/WOPTO huggingface dataset:
Patent PT-100640-A (PT)
Title: Variants of hirudine or its salts, method for their production and anticoagulants having the said compounds as active ingredients
Inventor: MISAWA SATORU
IPC: C07K7/00
Filed: 1992-06-29
Abstract: The invention relates to variants of hirudine having high anti-thrombin and anti-platelet activity, methods for their production and anticoagulants having the said variants as active ingredients. These variants of hirudine are shown by the formula (I) and contain tyrosine residues or have the hydroxyl group sulphated: Phen - Glu - A - Ile - Pro - B - Tyr(R) - Tyr(R)   (I) In the formula A indicates Glu or Pro, B indicates Glu, Tyr(R), Glu-Asp or Glu-Tyr(R) and (R) indicates the hydroxyl group or its sulphated ester (-O-SO3H) of the tyrosine residue. The method for the production of variants of hirudine consists of sulphating the hydrxyl group of the tyrosine residues mentioned.
Patent PT-102338-A (PT)
Title: Derivatives of enantiomerically enriched and substituted thiazolidinodione and pharmaceutical compositions containing them
Inventor: HINDLEY RICHARD MARK
IPC: C07D263/44
Filed: 1999-07-23
Abstract: The present invention deals with an enantiomerically enriched compound having the formula, I: <IMAGE>, or a tautomeric formula thereof and/or a pharmaceutically acceptable salt thereof and/or a pharmaceutically acceptable solvate thereof, where T represents, for example, a derivative of ethoxyphenyl and T<1> is S; in which more than 50 percent p/p of said compound is present in the form of a compound of formula, IA: <IMAGE>, or a tautomeric formula thereof and/or a pharmaceutically acceptable salt thereof and/or a pharmaceutically acceptable solvate thereof, where T and T<1> are as defined in regard to formula I and the carbon atom ** is an enantiomeric carbon atom. The compounds thus prepared are used in medicine, especially in treatment of hyperglycaemia.
Patent PT-104619-A (PT)
Title: Complexos de proteína e métodos de rastreio
Inventor: VALENTE ANDRE XAVIER DE CARVAL
IPC: C07K14/435
Filed: 2009-06-09
Abstract: O PEDIDO DE PATENTE REFERE-SE A UM COMPLEXO DE PROTEÍNA ISOLADO COMPREENDENDO COMPONENTES POLIPEPTÍDICOS:(I) UTP2O_HUMAN OU UM SEU FRAGMENTO, VARIANTE OU HOMÓLOGO; (II) PWP2 HUMAN OU UM SEU FRAGMENTO, VARIANTE OU HOMÓLOGO; (III) WDR46_HUMAN OU UM SEU FRAGMENTO, VARIANTE OU HOMÓLOGO; (IV) UTP18_HUMAN OU UM SEU FRAGMENTO, VARIANTE OU HOMÓLOGO; (V) MPP10_HUMAN OU UM SEU FRAGMENTO, VARIANTE OU HOMÓLOGO; (VI) WDR3_HUMAN OU UM SEU FRAGMENTO, VARIANTE OU HOMÓLOGO; (VII) TBL3_HUMAN OU UM SEU FRAGMENTO, VARIANTE OU HOMÓLOGO; (VIII) WDR36_HUMAN OU UM SEU FRAGMENTO, VARIANTE OU HOMÓLOGO; E (IX) NOC4L_HUMAN OU UM SEU FRAGMENTO, VARIANTE OU HOMÓLOGO. O PEDIDO DE PATENTE REFERE-SE ADICIONALMENTE A UM MÉTODO DE IDENTIFICAÇÃO DE UM AGENTE QUE MODULA A QUANTIDADE, FUNÇÃO, ACTIVIDADE, COMPOSIÇÃO E/OU FORMAÇÃO DO REFERIDO COMPLEXO DE PROTEÍNA; UM MÉTODO PARA PREVENÇÃO OU TRATAMENTO DE UMA PERTURBAÇÃO OCULAR COMPREENDENDO ADMINISTRAR A UM INDIVÍDUO QUE O NECESSITE UMA QUANTIDADE ADEQUADA DE UM AGENTE QUE MODULA A QUANTIDADE, FUNÇÃO, ACTIVIDADE, COMPOSIÇÃO E/OU FORMAÇÃO DO REFERIDO UM COMPLEXO DE PROTEÍNA; E UM MÉTODO PARA AVALIAR SE UM INDIVÍDUO TEM OU DESENVOLVERÁ PROVAVELMENTE UMA PERTURBAÇÃO OCULAR COMPREENDENDO DETERMINAR SE O INDIVÍDUO TEM UMA QUANTIDADE, FUNÇÃO, ACTIVIDADE, COMPOSIÇÃO E/OU FORMAÇÃO DE UM COMPLEXO DE PROTEÍNA ALTERADA.
Patent PT-110138-A (PT)
Title: Dispositivo de queimador, particularmente dispositivo de queimador de pré-mistura
Inventor: AFONSO CUNHA
IPC: F23D14/02
Filed: 2017-06-12
Abstract: A PRESENTE INVENÇÃO REFERE-SE A UM DISPOSITIVO DE QUEIMADOR (12), PARTICULARMENTE A UM DISPOSITIVO DE QUEIMADOR DE PRÉMISTURA, COM UMA UNIDADE DE QUEIMADOR (20), COM PELO MENOS UMA LINHA DE FLUIDO (30), A QUAL ESTÁ PREVISTA PARA CONDUZIR PELO MENOS UM COMPONENTE DE MISTURA, PARTICULARMENTE AR, DE UM FLUIDO DE AQUECIMENTO, E, COM PELO MENOS UMA UNIDADE DE REGULAÇÃO (40). É SUGERIDO QUE A UNIDADE DE REGULAÇÃO (40) REGULE UM DÉBITO DO COMPONENTE DE MISTURA NA LINHA DE FLUIDO (30) EM FUNÇÃO DE UMA TEMPERATURA DA UNIDADE DE QUEIMADOR (20).
Patent PT-118045-A (PT)
Title: Processo de produção de xilooligossacarídeos a partir de pasta celulósica kraft branqueada por hidrólise enzimática em meio aquoso
Inventor: ANTONIO PAULO MENDES DE SOUSA
IPC: C08B37/14
Filed: 2022-06-15
Abstract: A PRESENTE INVENÇÃO DIZ RESPEITO A UM PROCESSO DE PRODUÇÃO DE XILOOLIGOSSACARÍDEOS QUE COMPREENDE OS PASSOS DE HIDRÓLISE ENZIMÁTICA DE UMA PASTA CELULÓSICA KRAFT BRANQUEADA COM UMA ENDOXILANASE, EM MEIO AQUOSO E NA AUSÊNCIA DE UMA SOLUÇÃO TAMPÃO. OCORRE SEQUENCIALMENTE A SEPARAÇÃO DA SOLUÇÃO AQUOSA DE XILOOLIGOSSACARÍDEOS DA PASTA CELULÓSICA PÓS-HIDRÓLISE RESULTANTE E A PURIFICAÇÃO DA SOLUÇÃO AQUOSA DE XILOOLIGOSSACARÍDEOS OBTIDA. OUTRO ASPETO DA PRESENTE INVENÇÃO DIZ RESPEITO AOS XILOOLIGOSSACARÍDEOS OBTIDOS A PARTIR DO PROCESSO DESCRITO. O PROCESSO PERMITE EVITAR QUALQUER TRATAMENTO PRÉVIO DO SUBSTRATO E O USO DE SOLUÇÕES TAMPÃO PARA CONTROLO DO PH, AO MESMO TEMPO QUE PERMITE OBTER RENDIMENTOS SEMELHANTES, OU MESMO SUPERIORES, AOS OBTIDOS EM PROCESSOS CONVENCIONAIS E QUE USAM SOLUÇÕES TAMPÃO. OS XILOOLIGOSSACARÍDEOS OBTIDOS PELO PROCESSO SÃO OS COM PRINCIPAL ATIVIDADE PRÉ-BIOTICA, COM UMA COMPOSIÇÃO MAIORITÁRIA DE XILOBIOSE E XILOTRIOSE. ADICIONALMENTE, A PASTA KRAFT RICA EM CELULOSE PÓSHIDRÓLISE PODE SER RECONDUZIDA NUM PROCESSO DE PRODUÇÃO DE PASTA E DE PAPEL, NÃO ORIGINANDO QUALQUER DIMINUIÇÃO DAS PROPRIEDADES PAPELEIRAS DOS PRODUTOS PRODUZIDOS.
Patent RO-92300-A (RO)
Inventor: BOECKY GUSTAV M
IPC: C07D253/075
Filed: 1985-07-30
Abstract: Novel  alpha -aryl-4-(4,5-dihydro-3,5-dioxo-1,2,4-triazin-2(3H)-yl)-benzeneacetontr iles which are effective in destruting and/or preventing the growth of Protozoa; pharmaceutical compositions comprising such compounds as active ingredients and processes of preparing such compounds and pharmaceutical compositions.
Patent RU-94001549-A (RU)
Inventor: NOVIKOV N N
IPC: G06F11/00
Filed: 1994-01-17
Abstract: FIELD: automation and computer engineering, in particular, design of self-testing digital systems which perform several functions. SUBSTANCE: device has sixteen AND gates 1, 3, 4, 9...11, 22, 26, 30...33, 35...38, eight OR gates 2, 5, 23, 24, 39...42, six NON-EQUAL gates 6..8, 21, 25, 29, three NOT gates 18, 24, 34, paraphase information inputs 47, 46 and 49, 48, counting input 45, paraphase output 16, 17 and three control inputs 19, 20 and 28, first of which sets operation modes, second one makes settings, third one provides necessary operations of flip-flops in either D or RS flip-flop modes. When device operates, all errors which generate code (00) or (11) at paraphase outputs 16 and 17 are detected. EFFECT: increased functional capabilities. 1 dwg
Patent RU-94007072-A (RU)
Inventor: LEKSIN M JU
IPC: C02F1/58
Filed: 1994-03-01
Abstract: FIELD: purification of sewage from dyes, oil products, suspended particles, surface active substances. SUBSTANCE: reagent-reductant is added into sewage in combination with hydrogen peroxide and catalyst - ions of bivalent iron. process may find use in light industry. EFFECT: increased efficiency of purification.
Patent RU-94007469-A (RU)
Inventor: LIPATOV I S
IPC: G01N33/53
Filed: 1994-03-01
Abstract: FIELD: obstetrics and gynecology. SUBSTANCE: in a method of diagnosing vascular disorders in pregnant including determining level of antivascular antibodies of blood serum and drawing conclusion from results of data examination, one additionally performs determination of blood serum immunoglobulin E concentration, content of lymphocytes sensitized to vascular antigen, number of platelets, number of adhered platelets, percentage of adhered platelets, and index of platelet adhesion and aggregation. From deviation of these parameters from those in normal pregnant, one can judge of vascular disorders in pregnant. EFFECT: increased accuracy of diagnosis due to estimation of unknown parameters.
Patent RU-94010875-A (RU)
Inventor: KORSAK A N
IPC: A61B5/08
Filed: 1994-03-24
Abstract: FIELD: medicine, prophylaxis and treatment of lungs diseases, training of students for proper choice of breathing load for each musical instrument. SUBSTANCE: apparatus is made as speedometer with more accurate system of indication because it is connected with need to supervise definite thresholds of loadings. EFFECT: increased effectiveness of prophylaxis of lung disease. 2 dwg
Patent RU-94026129-A (RU)
Inventor: BUKATIN A N
IPC: F03G1/00
Filed: 1994-07-14
Abstract: FIELD: mechanical engineering. SUBSTANCE: spring mechanism is provided with a reduction gear and two toothings of the gear wheel. EFFECT: enhanced efficiency.
Patent RU-94037904-A (RU)
Inventor: KHUDKOV N N
IPC: F26B9/06
Filed: 1994-09-22
Abstract: FIELD: wood-working industry. SUBSTANCE: timber-drying chamber has heat-insulated hermetic housing 1, electric fan, circulating shields 10, vacuum pump 2 and water pump 3 with electric drive, tubular condenser 11, condensate receiver 4, piling car 12, electric calorifier 9 and steam generator 7. EFFECT: high rate and quality of drying; low cost of process. 5 cl
Patent RU-94038305-A (RU)
Inventor: GREHJS GENRI
IPC: C07B61/00
Filed: 1994-10-14
Abstract: FIELD: organic chemistry. SUBSTANCE: method is carried out by consequent interaction of cyanure chloride with two appropriate alkyl amines and with alkyl mercaptan. During adding mercaptan single nonmiscible organic solvent and catalyst of phase transfer are used. EFFECT: improves efficiency of method.
Patent RU-94039962-A (RU)
Inventor: KRONSHTADTOV S A
IPC: C12G3/08
Filed: 1994-10-26
Abstract: FIELD: alcoholic beverage industry. SUBSTANCE: vodka contains, l/1000 dal: aromatic alcohol of laurel leaves, 1.8-2.2; aromatic alcohol of common John's-wort, 2.5-3.5; 65.8-% sugar syrup, 10-15; aqueous-alcohol liquid, the balance. EFFECT: broadened assortment of special vodkas with new organoleptic properties.
Patent RU-94041238-A (RU)
Inventor: SHCHERBAKOV A S
IPC: C04B40/00
Filed: 1994-11-14
Abstract: FIELD: production of building materials, processes of cement-wood compositions materials treatment. SUBSTANCE: aim is to increase strength of final product by achievement pf limit concentrations of polycrystallization in sort time periods and to increase number of reacted particles of binder. Method is realized on base of apparatus, that has rotating magnetic field source 1 acted on samples 2 and created by phase windings 3 with reverse of rotation direction by switching of phase windings by magnetic starter 4. Magnetic starter winding 5 is controlled by sequence of pulses from Schmidt trigger 6 formed from sinusoidal voltage of tuneable RC-oscillator 7. Magnetic field intensity is adjusted by starting rheostat 8 Method provides for exercising of operations to act on samples of rotating magnetic field, to adjust frequency of magnetic field reverse, to train samples by pulses of shift currents during interval of treatment cycle, estimated duration of which depends on magnetic field intensity, number of binding substance kilomoles and is determined from expression: T =s, with F - Faradey number, μ - number of binder substance kilomoles, j - Guye potential, P - windings input power (W), k - apparatus efficiency. EFFECT: increased strength of final product. 3 dwg
Patent RU-94042196-A (RU)
Inventor: KOSAREV A M
IPC: H03M3/02
Filed: 1994-11-22
Abstract: FIELD: electrical communications; telephone communication. SUBSTANCE: device has on sending end: comparator, four-bit shift register, one(zero) density analyzer, syllable filter, compander, amplitude-pulse modulator, and two-section integrating filter; it also has digital error channel, on receiving end it has: four-bit shift register, one(zero) density analyzer, syllable filter, compander, amplitude-pulse modulator, two-section integrating filter, and low-frequency filter. In addition, device is provided with transmitted digital information validity analyzer whose transmitter has switch, pulse generator, sync pulse generator, and control circuit, and its receiver has switch, comparison circuit, error counter, digital-to-analog converter, sync pulse detector, and control circuit, as well as adjustable amplifier. EFFECT: improved channel and acoustic noise immunity. 2 cl, 3 dwg
Patent RU-94043336-A (RU)
Inventor: POPRAVKIN N A
IPC: F17D5/06
Filed: 1994-12-13
Abstract: FIELD: power transmission lines, telephone lines which are protected against moisture and which are tested for sealing by means of insulating gas at excess pressure. SUBSTANCE: device has compressed air source, heat exchanger, air filter, desiccating unit, receiver, controlled pressure-differential device, unit for draining condensed moisture, and pipes which connect said units. Desiccating unit is designed as membrane gas separating unit which membranes are designed as hollow fibers. Unit for draining condensed moisture has at least one chamber where condensate is stored and electric or pneumatic valve of periodic operations. In latter case, unit for draining condensed moisture has two chambers which are separated by diaphragm. One chamber is connected to heat exchanger, another one is connected to additional receiver which is connected to air pipe between desiccating unit and controlled pressure-differential device by means of side branch. If seal of envelop is broken, this area is located by means of gas detector which detects decreased concentration of oxygen in air in broken area. EFFECT: simplified design, simplified use, possibility to combine air desiccating and oxygen concentration lowering.
Patent RU-95106447-A (RU)
Title: Thickener
Inventor: TRUSOV N A
IPC: B01D29/44
Filed: 1995-04-21
Abstract: FIELD: sewage purification equipment. SUBSTANCE: apparatus is used for dewatering of manure effluents and can be employed in purification facilities of animal farms. Thickener has body and inside it coaxially installed are vertical perforated cylinder, device for cleaning out the inner surface of perforated cylinder and pipe connections for to bring effluents and to take out clarified and thickened planes. Filtering surface of perforated cylinder is made up of rectangular-section rods installed over generating line of cylindrical surface. Odd rods are fastened to end faces of apparatus by means of rings forming framework of cylinder, even rods are positioned for possible longitudinal displacement so that they partly overlap odd rod, thus forming slot-like clearances of adjustable dimensions. Device for cleaning out the inner surface of perforated cylinder is made in the form of taper-shaped hollow shaft with auger flight connected to drive unit. Effluent inlet pipe unit is tangentially connected with perforated cylinder at its top part, and thickened phase outlet has the shape of circular clearance between tapered hollow shaft and perforated cylinder. EFFECT: high efficiency. 5 cl, 4 dwg
Patent RU-95106554-A (RU)
Inventor: SHARGORODSKIJ V S
IPC: F01K17/04
Filed: 1995-04-24
Abstract: FIELD: steam-turbine manufacture. SUBSTANCE: steam-turbine unit has system for rotor cooling and for air cooling of high- and intermediate-pressure cylinders with pipings for supplying main and reheat steam, low-pressure cylinder, as well as air ducts running to cylinders connected to dry oxygen (air) source. Novelty is that it has dry conservation system incorporating ozonizer connected at its inlet to dry oxygen (air) source and at outlet, to air duct feeding air to turbine cylinders. EFFECT: provision for dry conservation of steam-turbine unit surfaces within a short time and with minimal cost, improved operating reliability due to preventing shut-down period corrosion.
Patent RU-95107736-A (RU)
Inventor: KRAVCHENKO JU P
IPC: A61B5/05
Filed: 1995-05-12
Abstract: FIELD: medicine, medical engineering, non-invasive remote diagnostics of pathologic and prepathologic conditions. SUBSTANCE: proposed method and apparatus are based upon topological analysis of configuration of equipotential surfaces of electromagnetic field for estimating pith total potential of protective forces of human body judging by relative dimensions of equipotential surfaces, and also estimating localization of pathologic foci judging by location of recesses and convexities on equipotential surface image with respect to patient's body. Received signal phase shift in relation to reference signal phase is detected and controlled by recording signal equal to integral of phase difference between received signal and reference signal. In this manner, great number of points with any in advance predetermined discreteness can be obtained for plotting equipotential curve in any required cross-section. Advantageously, this can be done by automating measurements and topograms plotting procedure. If tracking system is used, it is possible to organize continuous scanning of equipotential curve for controlling movements of receiving electrode on basis of deviation of received signal phase from reference signal phase. With this approach, noise is used as useful signal. Invention can be used for preliminary diagnostics, for topological diagnostics of diseases as viewed in dynamic aspect, and for control of treatment process dynamics. EFFECT: broader functional and diagnostic possibilities by evaluating topology of equipotential surfaces of patient's electromagnetic field judging by phase shift parameter. 29 cl, 21 dwg
Patent RU-95109208-A (RU)
Inventor: ZHUCHENKO I A
IPC: G01N21/39
Filed: 1995-06-07
Abstract: FIELD: gas analysis, determination of points and intensity of leaks of natural gas from main pipe-lines with use of devices installed on board the flying vehicle. SUBSTANCE: proposed analyzer has two lasers optically ganged to unit for formation and output of radiation which irradiates tested section of land surface near gas line and records radiation scattered from land surface with the use of receiving optical system and photodetector which is connected to amplifier-converter. Electric pulses corresponding to received radiation on two wave lengths go from output of amplifier-converter to buffer storage and then to calculator which presents electron circuit forming signal proportional to ratio of pulses corresponding to radiation of two waves and comparing obtained value with threshold set a priori. After comparison result is indicated on warning device, which is lamp or audio signal and is recorded by recorder which functions as long-time storage. For expansion of functional capabilities, dynamic measurement range and increase in accuracy of determination of coordinates of leak each laser is connected to proper output of unit controlling operational modes composed of delay forming unit, timer, two amplifiers-converters, unit controlling returning, unit of returning of radiation installed in addition between each laser and unit for formation and output of radiation which smoothly adjusts radiation wave within range 3.1-3.6 μ and is connected to unit controlling operational modes and optically coupled with one of two additional units of calibration and test which outputs are coupled to unit controlling operational modes. In unit controlling operational modes proper outputs of commutator are linked to each amplifier-converter, timer and unit controlling returning. Timer is coupled to delay forming unit, output of commutator is connected to calculator, output of timer is linked to buffer storage and input of unit controlling returning is coupled to calculator. Unit of spatial radiation scanning optically coupling output of unit for formation of output of radiation to input of receiving optical system via irradiated section of land surface and connected to unit controlling operational modes is additionally placed after unit for formation and output of radiation for additional increase of accuracy of determination of coordinates of point of leak. EFFECT: expanded functional capabilities, dynamic measurement range and increased accuracy of determination of coordinates of points of leaks.
Patent RU-95109775-A (RU)
Inventor: KANJUKOV V N
IPC: A61F9/007
Filed: 1995-06-21
Abstract: FIELD: ophthalmosurgery; treatment of epicanthus. SUBSTANCE: tissue is dissected in medial region of fold. Width of dissected zone does not exceed by more than 2 times skin thickness in this region, while its form corresponds to form of fold. EFFECT: minimal traumaticity; good cosmetic results without formation of cicatricial tissue.
Patent RU-95115229-A (RU)
Inventor: EHSENIJ TIBOR
IPC: A61P9/00
Filed: 1995-06-19
Abstract: FIELD: organic chemistry. SUBSTANCE: product: benzopyrane derivatives of the formula (I)where: Rmeans C-alkoxy-, alkenyloxy-, alkynyloxy-, cycloalkyloxy-, aryloxy-, aralkyloxy-, hydroxyl, nitro-, cyano-, formyl, C-acyl or C-alkylcyano-group, or halogen atom; Rmeans C-alkyloxy-, alkenyloxy-, alkynyloxy-, cycloalkyloxy-, aryloxy-, aralkyloxy- or hydroxyl group; Rand Rtogether form alkylenedihydroxy-group, and Rand Rmean C-alkyl group. Synthesized compounds show pharmacological activity. Invention relates to also pharmaceutical compositions containing compounds of the formula (I) and methods of preparing these pharmaceutical compositions. EFFECT: higher efficiency.
Patent TW-200403837-A (TW)
Title: Semiconductor device
Inventor: AIHARA KAZUHIRO
IPC: H01L29/417
Filed: 2002-11-05
Abstract: An Si crystal film functioning as a channel region is formed on an SiGe crystal film substrate. Furthermore, an SiGe crystal film functioning as a channel region is formed on the Si crystal film. In addition, on the opposite sides of the SiGe crystal film and the Si crystal film, an Si crystal film functioning as a source/drain region is formed. Moreover, a gate electrode is formed on the SiGe crystal film with a gate insulator film interposed. In accordance with the configuration described above, SiGe crystal film prevents the native oxidation of the Si crystal film. As a result, it is possible to obtain a semiconductor device that solves a problem caused by decrease in a conductivity in the Si crystal film resulting from the native oxidation of a surface of the Si crystal film.
Patent TW-200301467-A (TW)
Title: Optical disk drive apparatus, optical pickup, manufacturing method therefor and adjusting method therefor
Inventor: KAWANO NORIYUKI
IPC: G11B7/22
Filed: 2002-12-18
Abstract: An object of the invention is to provide an optical disk drive apparatus in which skew adjustment can be performed easily while allowing size, weight and cost reduction. An optical disk drive apparatus has an objective lens which converges a light beam to direct it to an optical disk, an objective lens support for supporting the objective lens on a chassis of the apparatus, an elastic support member which movably supports the objective lens on the objective lens support portion, and a coil and B magnet, one of which is provided substantially integral with the objective lens and another of which is mounted on the objective lens support portion independently from the objective lens. The coil and magnet are capable of moving, by an interaction of the coil and the magnet caused by supplying electric power to the coil, the objective lens against an elastic force of the elastic support member relative to the objective lens support portion so as to vary an angle of incidence of the light beam emitted from the objective lens with respect to an irradiated surface of the optical disk. As the angle of incidence, at least one of a radial direction tilt angle as a tilt angle of an optical axis with respect to the irradiated surface of the disk as seen from a direction perpendicular to a tracking direction and a tangential direction tilt angle as a tilt angle of the optical axis with respect to the irradiated surface of the disk as seen from the tracking direction, is adjusted only by variation in the angle of incidence caused by the electric power supply to the coil.