baber/WOPTO huggingface dataset:
Patent PL-81273-B1 (PL)
Title: Quinazolinone derivatives[us3712892a]
IPC: A61K31/505
Filed: 1970-08-01
Abstract: 1313789 Quinazolinones and quinazolinethiones SUMITOMO CHEMICAL CO Ltd 31 July 1970 [2 Aug 1969 4 Aug 1969 4 Sept 1969 8 Dec 1969 9 Dec 1969 19 Dec 1969 23 Jan 1970 24 Jan 1970 17 Feb 1970] 37167/70 Heading C2C Novel quinazolinones and quinazolinethiones of the general formula wherein D is a group of the formula W is O or S, n is 0, 1, 2 or 3, R 1 , R 2 and R 3 are each a hydrogen or halogen atom or a nitro, C 1-4 alkyl, C 1-4 alkoxy, C 1-4 alkylthio, C 1-4 alkylsulphonyl, C 1-4 alkylsulphinyl or trifluoromethyl group and R 4 is an optionally C 1-4 alkyl-substituted C 3-6 cycloalkyl group, and pharmaceutically acceptable acid addition salts thereof are prepared (a) by reaction of an aniline derivative of the general formula wherein Z is an oxygen atom or an imino group, with a compound containing an -N=C=O or -N=C=S group in the molecule ; (b) when W is O, by reaction of an aniline derivative of the second general formula above wherein Z is NH with phosgene; (c) when W is O, by reaction of a trihaloacetamidobenzene of the general formula wherein X 1 , X 2 and X 3 are each a halogen atom, with ammonia; (d) by reaction of a 1-unsubstituted quinazoline of the general formula with a reactive derivative of an alcohol of the general formula HO-C n H 2n -R 4 (quinazolines of the general formula may also be formed); (e) when W is S, by reaction of the corresponding quinazolinone of the first general formula above with phosphorus pentasulphide; and (f) when W is O, by oxidation of the corresponding quinazolinethione of the first general formula above; followed optionally by salification of the product. Aniline derivatives of the second general formula above wherein Z is O are prepared by oxidation of an indole of the general formula wherein R 5 is a C 1-4 alkoxy-carbonyl, carboxy, carbamoyl or cyano group, and hydrolysis of the resulting amide of the general formula Trihaloacetamidobenzenes of the third general 1 formula above are prepared by reaction of an aniline derivative of the second general formula above wherein Z is O with a trihaloacetic acid of the general formula X 1 X 2 X 3 C-COOH. 1-Unsubstituted quinazolines of the fourth general formula above are prepared by reaction of an R 1 ,R 2 -substituted o-(D-CO-) aniline with a compound of the general formula CCl 3 CWCl and reaction of the resulting R 1 ,R 2 - substituted N-(CCl 3 -CW-)-o-(D-CO) aniline with ammonium acetate, in the presence of triethylamine, or ethanolic ammonia. Pharmaceutical compositions having antiinflammatory and analgesic activity comprise, as active ingredient, a quinazolinone or quinazolinethione of the first general formula above or a pharmaceutically acceptable acid addition salt thereof, together with a pharmaceutical carrier.
[GB1313789A]
Patent PL-93998-B1 (PL)
Title: Alkanolamine derivatives[ca945172a]
IPC: C07C45/54
Filed: 1970-02-11
Abstract: 1-(Substd.-phenoxy)-3-isopropylamino-2-propanols as beta-adrenergic blocking agents Cpds. of gen. formula (I): (where R1 is alkyl or hydroxyalkyl; R2 is an electronegative residue esp. MeCO, EtCO, CN, MeOCO, EtOCO, NH2CO, MeNHCO, isoPr-NHCO, BuNHCO, AllylNHCO or carbazoyl; A is alkylene or alkenylene; n is 1 or 2; and R3 is H, Hal, alkyl, cycloalkyl, alkenyl, NO2, OH, alkylthio, alkoxy, alkenyloxy, aryl, aryloxy, aralkyl, aralkoxy, hydroxyalkyl, alkoxyalkyl, haloalkyl, acyl, alkoxycarbonyl, or CN and when n = 2 R3 groups may be the same or different) and the esters, condensation products with aldehydes and salts of (I).
[FR2034561A1]
Patent PL-137055-B1 (PL)
Title: Supercharging turbocompressor being propelled with exhaust gases and provided with bearing arrangement for its rotor disposed between the propelling turbine and the compressor
IPC: F01D5/02
Filed: 1982-08-16
Abstract: An exhaust-gas turbocharger has a bearing system which is positioned between a compressor impeller and a turbine wheel which are positioned on respective ends of a rotor shaft. The compressor impeller is attached to the rotor-shaft via an intermediate bush. A conically mating fit, at one end of the intermediate bush directly adjacent to the bearing, serves to attach this intermediate bush to a shaft-stub of the rotor shaft. A frictionally-locked press fit serves, at the other end of the intermediate bush, to attach the compressor impeller to the intermediate bush, in a manner which transmits torque.
Patent PL-152735-B1 (PL)
Title: Method for manufacturing urea
IPC: C07C239/00
Filed: 1988-02-23
Abstract: There is described a process for the preparation of urea which is utilisable in the conversion of a urea synthesis process with recycling of solution of the non-stripping type to a urea synthesis process with recycling of solution of the stripping type. In this process an absorption solution which has been obtained by separation of the unreacted ammonia and carbon dioxide which are left in the urea synthesis liquor from the stripping process step as a mixed gas, and absorbing of the mixed gas in an absorption medium, is subjected to a urea synthesis together with one part in each case of prepared ammonia and carbon dioxide in order to obtain a urea synthesis liquor, and a mixed gas comprising unreacted ammonia and carbon dioxide from the stripping process step is condensed in the urea synthesis liquor.
Patent PL-156602-B1 (PL)
Title: Small - power motor rectifier
IPC: A61C/
Filed: 1988-04-28
Abstract: A straight handpiece for a small-power motor, composed of rotational and connection units and a front part, characterized by the fact that the front part (2) consists of a complete casing (23), a release mechanism (24) and a spindle subassembly (4) interconnected separately. The complete casing (23) is composed of a casing (26), a front sleeve (28), a bearing sleeve (28) and a gasket (29), all of which make a kit by pressing-in connection. The release mechanism (24) is composed of a guiding sleeve (31), a threaded sleeve (24), a fixing nut (33), and an external nut (25), separately interconnected by means of a screw thread, a spindle (4) subassembly - a spindle (50) and a front pin set in it (15), a pressure pad (16), a collet (11) and a driving shaft, which are interconnected by means of a pin (7), moreover on the external surface of the spindle an intermediate slidable sleeve is set and it is connected with the spindle and with the pressure pad by means of a pin. (21).<IMAGE>
Patent PL-158749-B1 (PL)
Title: Cyclone dedusting device
IPC: B04C5/181
Filed: 1988-11-08
Abstract: Cyclone dust collector composed of a pipe feeding polluted gas, a pipe for carrying away clean gas, an upper cylindrical part, a lower conical part, slots cut along element of a cone which are closed with external ducts for carrying away loose material, a deflector and a loose material container, characterized in that ends of external ducts for loose material removal (5) are situated below the deflector (6).<IMAGE>
Patent PL-162671-B1 (PL)
Title: Pressure cylinder with variable pressure diameter
Inventor: SITKIEWICZ SLAWOMIR
IPC: B41F13/40
Filed: 1989-12-12
Abstract: Press cylinder with variable pressing diameter, characterized in that on the cylinder (1), two identical and symmetrical pressing coat (2) are located, whereas the internal coat flexure (12) is equal to that of the press cylinder (1), and the external coat flexure (13) of each press coats (2) is equal to the active circumference of the print cylinder, whereas those coats are capable of raising and falling with respect to the press cylinder (1) and the print cylinder (10), whereas that motion is caused by actuators (4) and transferred by levers to the pressing coats.<IMAGE>
Patent PL-161810-B1 (PL)
Title: Method of and apparatus for feeding molten material to a filament spinning device
Inventor: NABOZNY MARIAN
IPC: C03B37/01
Filed: 1990-06-01
Abstract: 1. A method of feeding of liquid plastics to defibering centre, characterised in that a mass of liquid plastic heated by a stream of hot waste gas is driven through a calibrated passage forming a stream of liquid plastic then fed to defibering centre, however, velocity of outflow of liquid plastic from the calibrated passage and temperature of liquid plastic on the way between the calibrated passage and the defibering centre is regulated by the amount of heat supplied to the mass of liquid plastic.2. A device for feeding of liquid plastics to defibering centre, characterised in that is consists of coaxially set in the lid (1) of a heating chamber (2) crucible (3) with a calibrated passage (4) in its bottom, however, in the walls of the heating chamber are set kinetic torches (5), whose axes are located adjacently to the wall of the heating chamber (2).<IMAGE>
Patent PL-165395-B1 (PL)
Inventor: KOWALSKI ZBIGNIEW
IPC: H01H33/52
Filed: 1991-11-07
Abstract: Układ łąccnikkwy izolacyjny zwłaszzcaa w
zestawach aparaturowych maszyn górniczych
zawierający transformator oraz wyłącznik zabezpieczeniowy,
centralne zabezpieczenie upływowe i
wyłącznik stycznikowy włączone po stronie pierwotnej
oraz silniki maszyn górniczych i stycznik od
strony odpływu, znamienny tym, ze wyłącznik stycznikowy
(4) jest połączony z silnikami maszyn
górniczych (5, 6) oraz stycznikiem (7) przy pomocy
łącznika izolacyjnego (8), którego napędjest skojarzony
z astabilnym łącznikiem rozwiernym (a) w
obwodzie sterowania tego wyłącznika stycznikowego
(4) i z łącznikiem zwiernym (b) łączącym za
pomocą trójfazowego układu gwiazdowego (9) tory
fazowe odpływowe z ziemią a następnie z trójpołozeniowym
łącznikiem izolacyjnym (c) w głównych
torach fazowych i łącznikiem testowania (d) w
obwodach transformatora pomocniczego (10).
Patent PL-171021-B1 (PL)
Inventor: MARCINKOWSKI RYSZARD
IPC: A61L2/06
Filed: 1993-06-22
Abstract: 1. Sposób szybkiego podgrzewania cieczy lub
zawiesin parą wodną, zwłaszcza cieczy 1 zawiesin
ulegających dezaktywacji termicznej, polegający na
doprowadzeniu pary wodnej poprzez rurę perforowaną
do przepływowej komory mieszania, znamienny
tym, ze ilość pary zmniejsza się stopniowo zgodnie z
kierunkiem przepływu ogrzewanej cieczy według
określonej zależności, korzystnie w funkcji wykładniczej,
poprzez zmianę powierzchni otworów (4)
wzdłuż długości rury perforowanej (2, 2')
Patent PL-171637-B1 (PL)
Inventor: SLOMKOWSKI STANISLAW
IPC: A61K47/30
Filed: 1993-08-10
Abstract: Sposób wytwarzania kompozytowych lateksów polipirolowych, znamienny tym, że
powierzchnię lateksu polipirolowego pokrywa się polimerem zawierającym grupy funkcyjne
zdolne do kowalencyjnej immobilizacji białek i innych związków, zwłaszcza pierwszorzędowe
grupy aminowe, prowadząc polimeryzację rodnikową w wodzie monomerów winylowych,
wybranych z grupy obejmującej akroleinę, monomery akrylowe i/lub ahdoaminowe
rozpuszczalne w wodzie, inicjowaną rozpuszczalnymi w wodzie inicjatorami lub promieniowaniem
jonizującym, przy stężeniach monomerów niższych niz 0,5% (w/v), w obecności
lateksu polipirolowego o stężeniach w zakresie od 1 do 2% (w/v).
Patent PL-171103-B1 (PL)
Inventor: PLONKA RUDOLF
IPC: E21C29/24
Filed: 1993-09-10
Abstract: 1. Zespół płozy podpierającej górniczy
kombajn ścianowy prowadzony ślizgowo od
strony zawałupo profilu rynnyprzenośnika i po
klinie ładującym od czoła ściany, zawierający gj
płozę zasadnicząmocowanąprzegubowo do kadłubakombajnu,
znamienny tym, że zasadnicza
płoza(1)mawzdłużnewybranie (2), obejmujące
listwę (3), przymocowaną do kadłuba (4)
kombajnu.
Patent PL-173686-B1 (PL)
Title: Textiles impregnating agent in particular for use on tickings
Inventor: NOWAK DOMINIK
IPC: C08L25/10
Filed: 1994-04-18
Abstract: The substance for impregnating textile products is designed especially for pillow-case textiles. Characterized in that: It consists of: 5-17 parts by mass of diethanolamid of fatty acids of low-erucic rapeseed oil; 1-2 parts by mass of oxyethylenated fatty alcohol; 2-6 parts by mass of ethylene glycol; 30-49 parts by mass of polyethylene emulsion. The emulsion is obtained by mixing 3.15 parts by mass of polyethylene wax, characterised by the melting point above 100 degrees C and the acid number equal to 16, with 7 parts by mass of alkyl-phenols of fatty alcohols oxyethylenated with 10-30 moles of ethylene oxide and 2 parts by mass of alkyl-phenols oxyethylenated with 3-12 mole of ethylene oxide. The mixture is neutralized at the temperature of 110-130 degrees C with a solution of alkalis or amines and diluted with demineralised water until the concentration of 40 percent is reached, while ensuring that the temperature of the emulsified mixture does not drop below 100 degrees C. Then, the mixture is heated up to the temperature of 110-140 degree C and the obtained emulsion is homogenised at this temperature for 1 hour. The impregnating substance also contains 15-28 parts by mass of butadiene-styrene copolymer at the concentration of 45 percent to 52 percent, and 15-30 parts by mass of water.
Patent PL-171818-B1 (PL)
Title: Filtering material, especially that for separating solid particles from air and method of obtaining such material
Inventor: HERDING WALTER
IPC: B01D46/24
Filed: 1993-04-01
Abstract: PCT No. PCT/EP93/00803 Sec. 371 Date Mar. 7, 1995 Sec. 102(e) Date Mar. 7, 1995 PCT Filed Apr. 1, 1993 PCT Pub. No. WO93/19832 PCT Pub. Date Oct. 14, 1993A filter element for separating solid particles from a fluid medium. The filter element comprises a permeably porous, substantially inherently stable shaped body made substantially of polyethylene. The polyethylene is made from polyethylene grains combined and heated to form the shaped body. The polyethylene grains comprisean ultrahigh molecular polyethylene component including fine grains and having an average molecular weight of more than 106. The polyethylene component further has, in an initial state before heating, a grain size distribution of at least 95% by weight of fine grains being larger than 63 microns and less than or equal to 250 microns. In addition, the polyethylene grains comprise a further polyethylene component including fine grains in an initial state before heating, and which has an average molecular weight of less than 106. The fine grains of the further polyethylene component are adapted to be combined and heated with the fine grains of the polyethylene component for forming the shaped body. The filter element further includes a fine pored coating of a fine grained material disposed on the afflux surface of the shaped body for filling at least a considerable depth of surface pores present on the afflux surface, the coating having an average grain size less than an average grain size of the shaped body.
Patent PL-178145-B1 (PL)
Title: Steam generator
Inventor: ZIEGLER GEORG
IPC: F22B31/04
Filed: 1995-01-11
Abstract: Upstream of the end superheater is arranged a further contact heat exchanger (5) with several pipe registers (10). The contact heat exchanger is so connected with the steam drum (6) that it is operable both as an evaporator and as an superheater, whereby the normally vertically or inclinedly arranged pipe registers of the contact heat exchanger are flowed through in the evaporator circuit by working medium to be heated from below upwards, and in the superheating circuit in series. The entry side and outlet side collectors (11a, 11d) of the pipe registers are connected with the steam drum via an overflow pipe (14a, 14d) which can be cut off (13), and via a steam stop (15a, 15d) with the steam conduit (7) leading from the steam drum to the pre-superheater.
Patent PL-177425-B1 (PL)
Title: Therapeutic lamp irradiating polarised light for hand operation
Inventor: BOLLETER HEINZ
IPC: F21V29/67
Filed: 1995-08-14
Abstract: A polarised light-radiating therapeutical lamp has a reflector (36) arranged directly behind the lamp (42) and a polariser (33) arranged in the path of the light emitted by the lamp (42). The polariser is a Brewster polariser made of a mirror sandwich of a plurality of thin, plane parallel float glass panes (34) directly superimposed and congruent, mounted in a glass frame (35). The float glass panes (34) may have elliptical forms and the glass frame (35) may be shaped as an elliptical reception trough with an elliptical bottom and a wall that surrounds a substantial part of said bottom. The wall is provided with a plurality of locking lugs that engage and retain the mirror sandwich.
Patent PL-178491-B1 (PL)
Inventor: KOWALEWSKI BOLESLAW
IPC: F16J15/18
Filed: 1996-04-22
Abstract: 1 Uszczelnienie końcowych, obrotowych wałów aparatów ciśnieniowych
zwłaszcza chłodnic skrobakowych i mieszadeł w miejscu
przejścia wału przez pokrywę aparatu zawierające obudowę
dławicy, która jest elementem pokrywy zamykającej część ciśnieniową
aparatu, tuleję dławikową, śruby dociskowe z nakrętkami,
znamienne tym, że składa się z dwóch zespołów uszczelniających,
z wewnętrznego zespołu uszczelniającego (1) i zewnętrznego zespołu
uszczelniającego (2), przy czym wewnętrzny zespół uszczelniający
(1) umieszczony jest na wale napędowym (3) w obudowie
dławicy (4) 1 składa się z tulei dystansowej (5) uszczelnionej pierścieniem
elastycznym o przekroju kołowym (6) i pierścieniem
elastycznym wargowym (7) oraz pakietu uszczelniającego (8)
składającego się z co najmniej dwóch pierścieni elastycznych wargowych
(7) umieszczonych w pierścieniach stalowych (9) uszczelnionych
od strony obudowy dławicy (4) pierścieniami o przekroju
kołowym (10), który od strony zewnętrznej dociskany jest za pomocą
tulei dławikowej dzielonej (11), kołnierza dzielonego (12)
śrub z nakrętkami (13), natomiastw obudowie dławicy (4)od strony
ciśnieniowej umieszczonajesttulejałożyskowa (14) zabezpieczona
pierścieniem zabezpieczającym (15), natomiast zewnętrzny zespół
uszczelniający (2) umieszczonyjestnawale napędowym (3) po zewnętrznej
stronie obudowy dławicy (4)
Patent PL-181334-B1 (PL)
Inventor: DABROWSKI HENRYK
IPC: A47G29/16
Filed: 1996-10-09
Abstract: 1 Skrzynka, zwłaszcza na przesyłki w kształcie prostopadłościanu
posiadającaścianę dolną,ścianę tylną,ścianę przedniąi
ściany boczne, a na przedniej ścianie szereg uchylnych klapek przegródkowych
oraz pokrywę mocowaną obrotowo do tylnej ściany z
krawędziami pokrywy wychodzącymi poza obrys skrzynki, a w górnej
części ściany przedniej mająca zamek do blokowania otwarcia
pokrywy, znamienna tym, że ściana tylna (1) w górnej części ma
łukowate wygięcie (7), a każda ze ścian bocznych (3) nad łukowatymwygięciemzaopatrzonajestw
otwór połączony z odpowiednim
otworem w ściankach bocznych pokrywy (9) za pomocą elementu
obrotowego (10) umożliwiając podnoszenie pokrywy (9) do góry,
przy czym pokrywa (9) ma od spodu przytwierdzony trwale uchwyt
(11), do którego przymocowanajestrozłącznie końcówka (12) zaopatrzona
w otwór górny (13), za pomocąktórego łączy się z uchwytem
(11) i otwór dolny (14), w którym umieszczonajestzasuwka (15) zamka
(16), natomiast w przedniej ścianie znajdują się co najmniej
dwie klapki przegródkowe (4) mające kształt korytek, a ich górne
końce osadzone są obrotowo, na wspólnym elemencie podłużnym
(17), którego końce osadzone są w ścianach bocznych (3), przy
czymprzeguby (18) zamocowane sądo ściany dolnej (2) 1 ścianytylnej
(1) za pomocą par czopów (19) oddalonych od siebie na odległośćnieco
mniejsząod grubości przegrody (18), przy czym górna
krawędź klapki przegródkowej (4) usytuowanajest powyżej dolnej
krawędzi listwy przedniej (5) 1 zamą, natomiastdolnakrawędź klapki
przegródkowej (4) usytuowanajest poniżej górnej krawędzi listwy
dolnej (6) i przed nią
Patent PL-180651-B1 (PL)
Title: Improvement crystallising method and apparatus
Inventor: SCHRANZ MARTIN B
IPC: C30B35/00
Filed: 1995-10-30
Abstract: A surface-cooled fluid bed crystallizer apparatus (10) and method are disclosed wherein submerged heat exchanger surfaces (typically heat exchanger tubes (14) or plates through which a coolant is passed) are bathed with a stream of gas bubbles (preferably air). The gas bubbles increase localized velocity at the heat exchanger surfaces, improves heat transfer, reduces crystallization on the heat exchanger surfaces and gently keeps the crystals in suspension, thereby avoiding unwanted nucleation as is characterized by the use of mechanical circulation devices. By continuously removing the depleted magma and crystals, the crystallizer (10) can be operated in a continuous mode.
Patent PL-174826-B1 (PL)
Title: Derivatives ofbenzoilecgonine, ecgonine and ecgonidine as pharmaceutic agents
Inventor: SOMERS LOWELL M
IPC: A61K31/46
Filed: 1993-12-23
Abstract: The present invention relates to a novel class of benzoylecgonine, ecgonine and ecgonidine derivatives which are useful for preventing and treating immunoregulatory disorders, neuromuscular disorders, joint disorders, connective tissue disorders, circulatory disorders and pain. The compounds of this invention are conveniently obtained by chemical synthesis. Accordingly, this invention also relates to methods for preparing the benzoylecgonine, ecgonine and ecgonidine derivatives and to pharmaceutical compositions containing these derivatives.
Patent PL-186118-B1 (PL)
Title: Drill seeder with disk coulters and a furrow filling scraper
Inventor: SIEBERS JOSEPH
IPC: A01B15/16
Filed: 1998-04-15
Abstract: The disc drilling shares (4) are formed as double disc shares set V-shaped relative to each other with a stripper mounted between the V discs (38,39). The stripper is formed as an elastic non-metal plate tensioned in U-shape and set in the rear area in the travel direction between the discs. The arms (42, 43) of the U-tensioned plate are aligned opposite the rotary direction of the discs. The elastic plate is self-resilient and preferably made of plastics, rubber or fabric. The elastic plate is detachably connected to the holder of the share and is designed to turn.
Patent PL-191113-B1 (PL)
Title: Improved integration of exogenic dna introduced into eucariotic cells
Inventor: HANSEN GENEVIEVE
IPC: A01H5/00
Filed: 1996-09-12
Abstract: The present invention provides an improved method for achieving stable integration of an exogenous DNA fragment in intact form into the genome of a eukaryotic cell, particularly a plant cell. The method comprises providing the exogenous DNA together with one or more proteins which promote integration of the exogenous DNA to the eukaryotic cell targeted for transformation, wherein the proteins are provided in the form of a chimeric gene or translatable RNA capable of expression in the eukaryotic cell. The method is particularly applied to plant cells to achieve stable integration of an exogenous DNA fragment bounded by T-DNA borders in intact form using integration-promoting proteins derived from Agrobacterium. Transgenic cultures, tissues and whole organisms, particularly transgenic plants, can be generated from cells transformed according to the method of the invention.
Patent PL-186550-B1 (PL)
Title: Package for transporting dangerous materials and modular component of such package
Inventor: DELMEE EMMANUEL
IPC: B65D5/50
Filed: 1997-07-11
Abstract: A packaging for transporting hazardous materials in one or more containers is disclosed. Said packaging includes a box (1) made of a semi-rigid material such as cardboard; at least one module (2) made of a semi-rigid material such as cardboard and including at least four side interconnected walls (12, 13, 14, 15), said module (2) having a substantially rectangular cross-section and being arranged inside said box (1) and spaced from the walls (4, 5, 6, 7) thereof, while said containers are arranged inside the module; and a filler material made of expanded phyllosilicates, preferably expanded vermiculite, which fills all of the remaining space inside said box (1) and said module (2) containing said hazardous material containers. The production of cardboard packagings, and the use thereof, particularly for packaging hazardous chemicals, are also disclosed.
Patent PL-193656-B1 (PL)
Inventor: WOJCIK IRENEUSZ
IPC: H01L23/48
Filed: 1999-11-04
Abstract: Sposób nakładania na podłoże półprzewodnikowe warstw elektrycznie przewodzących z sześcioborku
lantanu o wymaganej adhezyjności, metodą rozpylania katodowego, znamienny tym,
że w procesie rozpylania katodowego sześcioborku lantanu LaB6 do atmosfery argonowej dodaje się
od 2 do 0,6% azotu objętościowo.