baber/WOPTO huggingface dataset:
Patent DE-19645340-C1 (DE)
Title: Hardenable phosphazene-based compositions
Inventor: RAITH THOMAS DR ING
IPC: C08G79/02
Filed: 1996-11-04
Granted: 1998-02-12
Abstract: Hardenable compositions (I), which in the uncured state contain: (A) phosphazene derivative(s) of formula NP-(X-Y-Z)2n (II); (where X = -O-, -S-, -NH- or -NR- (with R = 1-6C alkyl); Y = aliphatic, cycloaliphatic, aromatic and/or heteroaromatic hydrocarbon groups, optionally containing O, S and/or N; Z = OH, NH2, NCO, COOH, CHO, -CH=CH2, allyl, N-methylol, (meth)acrylate, silyl, glycidyl or epoxy, or precursors of residues of these groups, or residues of these groups blocked with protecting groups; not more than 4 groups Z may also be H; n = 3-10); and (B) crosslinker(s) with at least 2 functional groups as listed for Z, which are capable of reacting with Z in component (A). Preferably the NP residues are combined in the form of phosphazene rings, with n = 3 or 4, preferably 3. X = O.  Y = 1-10C alkylene, oxyalkylene, alkylene-phenyl or alkylene-carboxyphenyl, or phenylene, biphenylene, alkoxy- phenylene or oxyphenylene, preferably -Phe-CH2-, -Phe-O-CH2-, -Phe-O-C2H4- (with Phe = 1,4-phenylene), or 1,4-phenylene,  1-10C alkyl-phenylene or 1-10C alkylcarboxyphenylene. Z = (meth)acrylate.
Patent DE-19647352-C1 (DE)
Title: Non-alcoholic clear drinks such as table water and mineral water
Inventor: BEHNAM DARIUSH
IPC: A61K35/08
Filed: 1996-11-15
Granted: 1997-09-18
Abstract: A non-alcoholic beverage is disclosed, such as table-water, medicinal water or the like. In order to obtain a well tolerated, easy to apply agent which enables a desirable dose of ubiquinone Q10 to be uniformly and constantly applied to the organism, the beverage contains 10 mg/l to 500 mg/l of ubiquinone Q10. In a production process, ubiquinone Q10 is dissolved in a solubilizer and the solution is added to the beverage.
Patent DE-19705208-C1 (DE)
Title: Paint brush with drive
Inventor: HATZL HELMUT
IPC: A46B13/02
Filed: 1997-02-12
Granted: 1998-09-24
Abstract: The paint brush has a drive to generate a vibration/ oscillation movement of the brush (10) at right angles to the direction of the bristles (11), and mainly at right angles to the direction of paint application. The brush is connected to the handle so as to be pivoted about an axis at right angles to bristle direction. The brush handle is formed as a grip (1) and the drive unit, e.g. an electric motor (2), is integrated into the grip. The motor shaft is connected to an unbalance mass (7). The grip contains a battery or an accumulator to drive the motor.
Patent DE-19730038-C1 (DE)
Title: Switching energy feedback device for bridge circuit
Inventor: LAYES PAUL
IPC: H02M7/48
Filed: 1997-07-14
Granted: 1999-02-25
Abstract: The energy feedback device uses a transformer (1) across a diagonal of the bridge circuit, a booster coil (2) between a pulsed DC voltage input (3) and the switching elements (S1,S3) in one half of the bridge and an energy storage capacitor (5) and a current source (16) for feedback of the energy stored in the capacitor. The stored energy is fed back directly via the transformer.
Patent DE-19916660-C1 (DE)
Title: Buttonhole sewing machine has a control unit which determines the operation of the drives for cutting and stitching buttonholes of different shapes and/or sizes without manual resetting
Inventor: KAEHLER DIETRICH
IPC: D05B3/08
Filed: 1999-04-14
Granted: 2000-06-21
Abstract: The buttonhole sewing machine has an input system to set, store and process data regarding the different shapes and/or sizes of the groups of buttonholes. A system controls the drives for successive execution of the buttonholes in the fabric workpiece.  A cutter makes an initial cut in the zigzag seam. The operating and control unit (110) determines the activation of the cutter and the type of cut to be made. The drive control also controls the cutter. A feed delivers the gimp thread, with a drive (56) which operates the gimp thread guide, and a drive (60) activates the gimp thread clamp and a drive (64) works the cutter. The gimp thread is moved into a position in front of the needle hole, and into a rest position away from it. The drive and feed system is operated from the control unit (110). The cutter, to make a cut in the fabric, has a cutting blade and a cutting block in an arm. The cutting block is moved by a drive (81) into position against the cutting blade of different blade lengths.
Patent MD-4639-C1 (MD)
Title: Positive allosteric modulators of nicotinic acetylcholine receptor
Inventor: ESKILDSEN JǾRGEN
IPC: C07D405/12
Filed: 2012-07-06
Abstract: The invention relates to phenyl-cyclopropanecarboxamide derivatives of formula (I):(I),wherein R1-R5 are H, R6 is methoxymethy, A8 is N, and R10, R11, A7 and A9 are as defined in the disclosure of the invention.The invention also relates to compositions comprising said compounds, and to methods of treating diseases comprising their administration. The compounds referred to are positive allosteric modulators (PAMs) of the nicotinic acetylcholine α7 receptor.
Patent RU-2079208-C1 (RU)
Title: Interface device for connection of user communication line to telephone exchange system
Inventor: DZHON-VON PAK
IPC: H04B3/06
Filed: 1992-10-21
Granted: 1997-05-10
Abstract: FIELD: communication devices. SUBSTANCE: device has first, second and third buffer units 1, 2, 8, first, second, third, fourth and fifth flip-flops 3, 4, 5, 6, 7, inverter 9 and OR gate 10. EFFECT: increased reliability of connection. 4 dwg, 1 tbl
Patent RU-2101201-C1 (RU)
Inventor: OSADCHIJ A F
IPC: B60P3/12
Filed: 1992-12-02
Granted: 1998-01-10
Abstract: FIELD: transport engineering; vehicles for recovering, lifting of bogged up automobiles and damaged automobiles and towing. SUBSTANCE: retriever has pull winch with grip, load boom and thrust rods mounted on chassis frame. Uprights are rigidly secured on cross beam connecting thrust rods. Links are hinge-connected by ends to boom and to upper parts of uprights, respectively. Rods are telescopic, consisting of body and extensible section. Body of each rod is hinge-secured on frame rear part. Limiting sockets for engagement with upper parts of uprights and fixing locks for locking the uprights in operating position are made on lower ends of each link. Load boom is hinge-secured on upper frame member mounted on chassis frame. EFFECT: enlarged operating capabilities. 5 dwg
Patent RU-2018514-C1 (RU)
Title: Process for preparing oil from squash seeds
Inventor: CHABAN LEONID N
IPC: C11B1/10
Filed: 1993-01-25
Granted: 1994-08-30
Abstract: FIELD: fat and oil industry. SUBSTANCE: unshelled squash seeds are comminuted to meal, then moistened to 10-12% at a temperature not higher than 60 C and the resulting mass is then to be pressed. EFFECT: improved process. 1 tbl
Patent RU-2066089-C1 (RU)
Title: Piezoelectric element
Inventor: LARIONOV IVAN M
IPC: H03H9/56
Filed: 1993-01-12
Granted: 1996-08-27
Abstract: FIELD: frequency selection of signals. SUBSTANCE: distance between edge of piezoelectric element and contact plate of electrode is multiple to thickness of crystal. EFFECT: increased efficiency. 1 dwg
Patent RU-2056458-C1 (RU)
Title: Aqueous surface active composition and use thereof for preparing liquid detergents
Inventor: BRIGITTE GIZEN
IPC: C11D1/83
Filed: 1991-07-31
Granted: 1996-03-20
Abstract: FIELD: preparation of liquid detergents. SUBSTANCE: the aqueous surface active composition comprises (wt %): 5-30 alkylol-isoglycoside; alkylsulfate wherein alkyl has 6-10 carbon atoms, alkylsulfate wherein alkyl has 12-22 carbon atoms, and up to 100 water balance. EFFECT: improved properties of the aqueous surface active composition. 7 cl, 2 tbl
Patent RU-2064003-C1 (RU)
IPC: C10J3/12
Filed: 1993-02-19
Granted: 1996-07-20
Abstract: Использование: в топливной промышленности, коммунальном хозяйстве, химической и металлургической промышленности в способах газификации твердого топлива. Сущность: газификацию проводят в присутствии нагретого автономно теплоносителя. В качестве теплоносителя используют порошки или гранулы или расплавы меди, ее сплавов или оксидов. 1 табл.
Patent RU-2065748-C1 (RU)
Title: Method of treatment of chronic staphyloderma
Inventor: KATKHANOV ALI MURATOVICH
IPC: A61K39/085
Filed: 1993-02-26
Granted: 1996-08-27
Abstract: FIELD: medicine, dermatovenerology. SUBSTANCE: method involves the preliminary assay of antibodies in blood to cytoplasmatic antigen and at value below 2.84 ± 0.21 ln 1 /titer the native staphyloprotectin is administrated subcutaneously at dose 0.2-0.3-0.5-0.8 ml at 3 days interval and then after 2 months adsorbed staphyloprotectin is administrated as a single dose 0.8 ml. EFFECT: improved method of treatment. 3 tbl
Patent RU-2061466-C1 (RU)
Title: Shaving cream
Inventor: ARUTYUNYAN NORAJR S
IPC: A61K8/36
Filed: 1993-03-15
Granted: 1996-06-10
Abstract: FIELD: cosmetics. SUBSTANCE: cream has the following components, wt.-%: hydrogenated seal oil 20-35; deodorized chicken fat 10-20; potassium hydroxide 4-10; sodium hydroxide 0.5-5.0; glycerol 5-10; lanolin 0.5-1.5; boric acid 0.1-0.5; perfume 0.5-1.0, and water - the rest. EFFECT: enhanced foaming property, penetration and foam stability.
Patent RU-2049894-C1 (RU)
Inventor: GAVRILOV VLADIMIR I
IPC: E05B27/06
Filed: 1993-04-12
Granted: 1995-12-10
Abstract: Сущность изобретения: цилиндровый механизм замка содержит корпус с осевым каналом. В осевом канале установлен сердечник с системой штифтов с механическими кодовыми элементами и системой штифтов с магнитными кодовыми элементами. В канале корпуса выполнен продольный трапецеидальный паз. 3 з. п. ф-лы, 11 ил.
Patent RU-2043875-C1 (RU)
Title: Cutter plate fastening method
Inventor: POPLAUKHIN ARKADIJ I
IPC: B23B27/00
Filed: 1993-04-30
Granted: 1995-09-20
Abstract: FIELD: working of metals. SUBSTANCE: method involves mounting wedge-shaped cutter plate on support surface of casing wedge-shaped slot and fastening by fastening member, with force of fastening member being directed to cutter plate apex and direction of motion of cutter plate under the action of fastening member being oriented at an acute angle relative to tool axis; mounting cutter plate in casing slot so that cutter plate front surface is engageable with casing slot surface opposed to support surface, with fastening member force being directed along diagonal of cutter plate front surface. EFFECT: increased efficiency and high-precision turning. 3 dwg
Patent RU-2047104-C1 (RU)
Title: Vibration indicator of loose material level
Inventor: BATYGIN VALERIJ A
IPC: G01F23/00
Filed: 1993-06-01
Granted: 1995-10-27
Abstract: FIELD: mechanical engineering. SUBSTANCE: indicator has sensitive element made in form of vibrating probe with end-piece in form of blade 1; second end of probe is used as armature of motion converter 12; indicator is also provided with two rigid stops located at different ends of probe, electromagnet 8 and spring 10. Electromagnet and motion converter are located on different sides of vibrating probe. Armature is spring-loaded to stop on side of motion converter. Used as rigid stops are cores of electromagnet and induction motion converter. EFFECT: enhanced reliability. 1 dwg
Patent RU-2066150-C1 (RU)
Title: Artificial intraocular implants
Inventor: EGOROVA ELEONORA V
IPC: A61F2/16
Filed: 1993-06-18
Granted: 1996-09-10
Abstract: FIELD: medicine. SUBSTANCE: device has optical part, round frontal support members and round back ones made from flexible material with two symmetrically disposed notches facing each other with their convex parts. The axes of two pairs of symmetrically disposed notches are in perpendicular relation to each other. EFFECT: improved quality of rehabilitation after cataract extraction. 1 dwg
Patent RU-2063386-C1 (RU)
Title: Method of purifying natural and waste water from petroleum products
Inventor: YANKEVICH MARINA I
IPC: C02F101/32
Filed: 1993-06-23
Granted: 1996-07-10
Abstract: FIELD: water purification. SUBSTANCE: purification of natural and waste water is achieved through using a crimped cord made of two plane bands of polycaproamide filaments with associated yeast of genus Candida. Such a cord with yeast has an affinity to dissolved and strongly emulsified petroleum products. So the method may be applied to remove the petroleum products from natural reservoirs and also, at the aeration stations, to after-purify the industrial wastes containing from 0.2 to 250 mg/l petroleum products. EFFECT: increased removal of petroleum products.
Patent RU-2063142-C1 (RU)
Title: Method for producing paste from whey
Inventor: PETROV SERGEJ MIKHAJLOVICH
IPC: A23C21/00
Filed: 1993-06-24
Granted: 1996-07-10
Abstract: FIELD: milk industry. SUBSTANCE: method involves pasteurizing whey; reducing whey purity to 56-65% by introducing milk sugar blackstrap; condensing whey till weight part of dry substance in syrup reaches 65-70%; cooling syrup and simultaneously mixing with intensity providing suspending of dispersed phase in the process of cooling; holding to hard consistency. EFFECT: increased efficiency, simplified method and improved quality of product.
Patent RU-2044074-C1 (RU)
Title: Method for heating soaking pit with burner in bottom center
Inventor: AKSENOV ALEKSANDR V
IPC: C21D9/70
Filed: 1993-06-29
Granted: 1995-09-20
Abstract: FIELD: metallurgy. SUBSTANCE: method for heating soaking pit with burner in bottom center consists in formation of free flame with periodically varied length by acting with air jets on flame and flame swirling along the tangent and generating line with preservation of total flow rate of gas and air constant. Flame swirled by air jets is supplied to the surface of pit cover with coating occupying its center area part which presents ellipse truncated by pit end walls and featuring emissivity factor determined by formula given in the invention description. EFFECT: higher efficiency. 2 dwg, 1 tbl
Patent RU-2098188-C1 (RU)
Title: Method and device for separation of mixture
Inventor: ARTUR ZALTTSMAN
IPC: B03B5/40
Filed: 1991-08-19
Granted: 1997-12-10
Abstract: FIELD: separation of agricultural products at insignificant difference in density. SUBSTANCE: device includes inclined transportation passage with gastight bottom and side walls to which fluidized material is supplied and air is supercharged vertically through gastight bottom. Transportation passage may be vibrated vertically at frequency and amplitude at which mixture to be separated attains acceleration of 3 to 12 g (about 29-118 m/sq.s). EFFECT: enhanced efficiency. 29, 12 dwg
Patent RU-2132704-C1 (RU)
Title: Device for distribution of medicinal agents, injector construction, method of reduction of excess dose of measured product
Inventor: PITER MICHEL
IPC: A61M5/28
Filed: 1994-03-09
Granted: 1999-07-10
Abstract: FIELD: medical engineering. SUBSTANCE: device has cartridge containing product to be injected and injector attached to cartridge. Injector includes drive mechanism which has dosing bushing provided with dosing head at its end being the nearest one to attachment place and rod with thread. Rod is coupled to bushing. It is capable of moving in axial direction into cartridge when head is rotated clockwise for setting the limb to required dose to be injected. Injector housing accommodates ratchet gear which includes rotary part secured to dosing bushing for rotation with the latter and locking seat engaged with rotary part. Ratchet gear rotates bushing clockwise only. Release mechanism is secured to housing of liquid-crystal display. It includes pin which passes into rotary part of ratchet gear and engages this part so that axial displacement of pin causes axial movement of stationary part. EFFECT: enhanced accuracy of dosing. 10 cl, 17 dwg
Patent RU-2077295-C1 (RU)
Title: Method to remove eyeball at intraocular tumors
Inventor: BROVKINA ALEVTINA F
IPC: A61F9/007
Filed: 1994-03-02
Granted: 1997-04-20
Abstract: FIELD: medicine, ophthalmology. SUBSTANCE: method deals with additional horizontal conjunctival cut followed by inspection of both posterior ocular pole and optic nerve to conduct enucleation so that optic nerve stump upon eyeball is 16 mm not less. EFFECT: the method increases operational ablasticity, prevents metastasis process and development of retrobulbar hematoma, enables to conduct optic nerve intersection under visual control.
Patent RU-2046772-C1 (RU)
Title: Ceramic article, raw mixture and a method of ceramic article making
IPC: C04B38/06
Filed: 1994-05-27
Granted: 1995-10-27
Abstract: FIELD: ceramics. SUBSTANCE: ceramic articles were made of the raw mixture consisting of, wt.-% clay 20-79.9; spent bentonite drilling fluid 20.1-80. Spent bentonite drilling fluid is dried up to the moisture 2-3% then mixed with clay up to definite composition mixture preparing. Then blanks were pressed or formed, dried and calcined in tunnel-type furnace, annular kiln or roller-hearth furnace. In tunnel-type furnace roasting is carried out at 950-1000 C for 18-40 hr, in annular kiln at 950-1000 C for 30-55 hr and in roller-hearth furnace at 1020-1080 C for 8-12 hr. Physico-mechanical indices: compression limit strength is 75-300kgs/cm 2 , bending limit strength is 14-44kgs/cm 2 , water absorption is 6-8% not less. EFFECT: enhanced quality of ceramics. 7 cl, 4 tbl
Patent RU-2082599-C1 (RU)
Title: Abrasive tool
Inventor: TONYAEV VLADIMIR IVANOVICH
IPC: B24D13/00
Filed: 1994-06-08
Granted: 1997-06-27
Abstract: FIELD: mechanical engineering; grinding, polishing and finishing surfaces of different materials. SUBSTANCE: abrasive tool of shape symmetrical relative to center and provided with central hole is made up of pieces of abrasive cloth interconnected through bases by means of binder. Support surfaces for flush mounting of mandrels can be made in abrasive tool. External edge of abrasive tool can be made lug-shaped. Binder connecting abrasive cloth bases can contain abrasive material. Base for application of finishing abrasive material can be secured on working surfaces of abrasive tool. EFFECT: enlarged operating capabilities. 5 cl, 16 dwg
Patent RU-2091373-C1 (RU)
Inventor: YUKIO SUGIMURO
IPC: A61P35/00
Filed: 1992-11-02
Granted: 1997-09-27
Abstract: FIELD: medicine. SUBSTANCE: novel compounds of the present invention have general formula:   wherein R 1  is group of formula: -OR 3  and R 3  are each hydrogen, alkyl or alkoxy; -NHCH(R 6 )COR 7  in which R 6  is hydrogen or alkyl and R 7  is alkyl; -NHCH(R 6 )COOR 8  in which R 8  is alkyl or -NHCH(R 6 )CONR 9 R 10  in which R 9  and R 10  are each hydrogen or alkyl, or NR 9 R 10  together form heterocyclic group and R 2  is hydrogen, alkyl or aralkyl. Compounds have inhibitory activity to collagenase type 1V due to which fact they are useful as angiogenesis inhibitors, cancer infiltration and cancer methastases. EFFECT: improved properties. 23 cl, 1 tbl
Patent RU-2130008-C1 (RU)
Inventor: NORIJASU SAKAMOTO
IPC: C07C317/22
Filed: 1994-10-18
Granted: 1999-05-10
Abstract: Соединение дигалогенпропена формулы I, где 1 и m - целое число 1-3; R 1  - галоген, ацетамидо, трифторацетамидо, нитро, алкил, галогеналкил, алкокси, галогеналкокси, алкилтио, галогеналкенилокси, гидрокси-алкил, алкенил, галогеналкенил (другие значения R 1  и иных обозначений см. в п. 1 формулы изобретения), обладает отличной инсектицидной и/или акарицидной активностью. 6 с. и 26 c.п. ф-лы, 22 табл.
Patent RU-2106523-C1 (RU)
Title: Film windmill
Inventor: MIFTAKHUTDINOV I KH
IPC: F03D3/00
Filed: 1994-10-12
Granted: 1998-03-10
Abstract: FIELD: renewable energy source using wind and ambient temperature variations for generating electricity. SUBSTANCE: windmill has piezoelectric film blades such as made of polyvinylidene fluoride, braced together by means of heat-sensing members made of alloy possessing reversible transformation induced plasticity on spindles of fastening wheels fitted on common shaft and rotating under the action of wind. Piezoelectric film also emits electricity under the effect of ambient temperature variations, direct sun rays, film vibrations caused by wind when it alternately stretches and elongates producing additional electricity. EFFECT: improved design. 5 dwg
Patent RU-2074883-C1 (RU)
Title: Alternative method of deeper oil processing
Inventor: NASIROV RASHID K
IPC: C10G65/04
Filed: 1994-12-15
Granted: 1997-03-10
Abstract: FIELD: petroleum processing. SUBSTANCE: method including contacting desalted and dehydrated oil with alumino/nickel/molybdenum and alumino/cobalt/molybdenum catalyst charged in mixture with elementary sulfur in hydrogen medium at elevated temperature and pressure is distinguished with that oil is brought in contact with catalyst successively in two steps: first with alumino/nickel/molybdenum catalyst at 350-400 C and pressure 30-40 atm and then with alumino/cobalt/molybdenum catalyst at 400-450 C and pressure 40-70 atm, provided that, after the first step, 1-10 vol % of an organic oxygen-containing compound is added. EFFECT: enhanced efficiency of process.
Patent RU-2099006-C1 (RU)
Inventor: KOPYLOVA VILVERA A
IPC: A61B5/05
Filed: 1994-11-23
Granted: 1997-12-20
Abstract: FIELD: medical engineering. SUBSTANCE: device has high frequency oscillator having two frame radiators mounted in parallel to each other in horizontal direction to enable object under study to be placed between them. The object is positioned on movable table with bed composed of several parts that are to be detachable over the organ under study. Presentation unit being plate manufactured from material conducting magnetic field and having metal powder layer applied to its surface, is mounted under the object under study. Magnetic field passing through carcinoma tissue, its density changes and it reflects over powder projection on the plate. The powder projection consists of powder particles heaped one over another and directed towards the end having the opposite charge as carcinoma is a set ions charged with charges of the same sign. EFFECT: enhanced accuracy of early stage diagnosis. 3 dwg
Patent RU-2076895-C1 (RU)
Inventor: GORDASH YURIJ TIMOFEEVICH
IPC: C10N40/25
Filed: 1995-05-06
Granted: 1997-04-10
Abstract: FIELD: organic chemistry. SUBSTANCE: mixture comprising 60-90% alkaline metal alkyl salicilate and 10-40% alkyl phenol, wherein C 12 -C 24 -alkyl, is treated with alkaline metal hydroxide or oxide, and reaction mixture is then treated with elementary sulfur in the presence of promoter followed by purification of the final addition agent. After being treated with elementary sulfur, the reaction mixture may be carbonated with carbon dioxide in the presence of promoter. Lubricating oil contains base oil and 0.5-20% addition agent prepared by the process describes above. EFFECT: improved properties of the addition agent. 4 cl, 3 tbl
Patent RU-2137778-C1 (RU)
Title: Mixed nitrate esters of cellulose with maleate groups as high-molecular backing for adhesive, paintwork, and polymer materials and method of preparation thereof
Inventor: LOGINOV N P
IPC: C09D101/14
Filed: 1995-06-01
Granted: 1999-09-20
Abstract: FIELD: cellulose-based materials. SUBSTANCE: invention relates to new nitrate-maleate cellulose esters prepared from high-nitrogen cellulose nitrates or out-of-date pyroxylin powders, which can be applicable as polymer backing for glues, varnishes, and dyes with reduced combustibility and better film-forming capability. Cellulose nitrate or pyroxylin powder is subjected to condensation reaction with maleic anhydride at heating and stirring. To obtain loose hard-to-electrify product, its precipitation is effected by dosing water at the same temperature as reaction mixture (50-60 C). Combustibility of 1-mm film is 5 mm/s and water absorption 0.1 wt %. EFFECT: improved consumer's properties. 4 cl, 1 tbl, 11 ex
Patent RU-2115967-C1 (RU)
Title: Magnetorheologic material
Inventor: KEJT D VEJSS
IPC: C10N10/04
Filed: 1993-10-27
Granted: 1998-07-20
Abstract: FIELD: production of specific materials. SUBSTANCE: material contains liquid carrier and magnetically active particles which are modified so that particle surface is fully cleaned of pollutants. The latter are removed from particle surface by treatment with abrasive material, chemical treatment, and their combination. EFFECT: improved magnetorheologic effects of material. 33 cl, 1 dwg, 13 ex, 4 tbl