baber/WOPTO huggingface dataset:
Patent CN-100495442-C (CN)
Inventor: FEIPENG DA
IPC: G06T17/00
Filed: 2007-03-23
Granted: 2009-06-03
Abstract: 一种三维扫描的点云精简方法：首先对三维点云进行栅格划分，该栅格划分为一个点云的最小外接正方体，边长为L，然后沿三个坐标轴方向划分成边长 的子栅格，式中α为稀释比例由设计要求确定，n为点云中的点个数；然后在点云每个点P i (i＝1……n)的邻近子栅格内取得P i 的邻域点集KNB(P i )＝{X 1 ，X 2 ，…，X n }，用KNB(P i )的最小二乘逼近平面作为P i 的微切平面S(P i )，令 为KNB(P i )的形心，设P i 的第j个邻近点到S(P i )的距离为d j ，到 的距离为λ j ，那么存在函数f j (P i )＝d j /λ j ，P i 的曲率函数为   ，据此求得点云中每个数据点P i 的曲率；最后求取每个小栅格中点的平均曲率，并得到每个小栅格中点的曲率与平均曲率的差值，此差值小于设计要求中精度的点将被选中作为该栅格的点，其余的点被删除，实现对点云的精简。
Patent CN-100516379-C (CN)
Inventor: SHENGZHE NIE
IPC: E02D19/00
Filed: 2007-07-23
Granted: 2009-07-22
Abstract: 本发明涉及房屋的排水系统，是木结构房屋地基排水系统，包括地下室墙基、多孔塑料散水管、屋顶排水管、下水管道，多孔塑料散水管设在地下室墙基底层，多孔塑料散水管上设有粗集料层，在地下室墙基侧壁上设有落水管，在多孔塑料散水管上层地下室墙基上设有集水槽、排水管，落水管上接屋顶排水管，下接集水槽，集水槽两侧与排水管相接，排水管与下水管道相接。本发明根据木结构房屋的防潮与通风的特性，采用排水管与多孔塑料散水管的双层排水方式，将屋顶水流和地下水流分别排泄，大大提高排水能力。
Patent CN-100457690-C (CN)
Title: 一种污水处理厂污泥加工成农肥的方法
Inventor: PINJING HE
IPC: C04B18/30
Filed: 2007-03-05
Granted: 2009-02-04
Abstract: 一种污水处理厂污泥加工成农肥的方法，涉及一种污水厂污泥制农肥的方法。浓缩预处理后的污水厂污泥，加入质量比0.3%的硫化铁后，进入曝气消化器中，进行曝气消化，消化过程的溶解氧为2.0-1.5mg/l，消化时间6d；消化污泥进入卧式螺杆卸料离心机中脱水，离心分离因素为1800-2200，脱水后分离得到脱水液和脱水的泥饼；脱水液经粉煤灰与碎石混合滤料组成的过滤中和器过滤中和后，排出液回流污水厂的缺氧脱氮段，其中的溶解性有机物可作反硝化脱氮的碳源被利用并去除；泥饼与粉煤灰混合至含水率达55%-58%，再进行常规堆肥化处理后，即得到N、P、K含量8-10%的农肥。本发明保证重金属不再进入环境，“以废制废”进一步降低了处理的成本，具有可贵的经济和环境效益。
Patent CN-100492723-C (CN)
Inventor: CHEN JUN
IPC: H01M4/04
Filed: 2007-04-11
Granted: 2009-05-27
Abstract: 本发明涉及一类过渡金属钒酸盐，包括钒酸铜(CuV 2 O 6 )，钒酸钴(CoV 2 O 6 ·2H 2 O)和钒酸镍(NiV 2 O 6 ·H 2 O)电极材料的制备方法及其应用研究。这些材料都是具有一维纳米结构的锂电池阴极材料。采用水热合成实现了钒酸铜、钒酸钴、钒酸镍的一步制备；该方法具有工艺简单成本低、流程短、后处理手序少、产品质量稳定等优点，有利于实现工业化。结果表明：钒酸铜一维纳米电极材料由于具有较大的比表面积等优点，提高了质子的扩散性能，增大了活性物质与电极间的接触，减小电极、电池内阻，显著提高电极高温与高倍率放电性能，在锂一次电池中具有十分良好的应用前景。
Patent CN-100593819-C (CN)
Title: 播放目录摘要信息管理方法
Inventor: MEIXIAN JIN
IPC: G11B27/10
Filed: 2003-08-29
Granted: 2010-03-10
Abstract: 本发明是关于一种播放目录摘要信息管理方法。在高密度可重复刻录光盘(BD-RW)的文件结构上的播放目录文件内，把各自记录保存的多数个播放目录信息，以播放目录信息摘要(Summary of Play List Information)附加记录到和上述播放目录文件不同的文件内管理的同时，搜索读取其播放目录，把相应播放目录的代表画面，用使用者选择菜单输出显示，不用一一搜索多个播放目录文件，也可以迅速输出显示代表播放菜单的代表画面。本发明可以防止各个代表画面的不连续输出显示，或播放目录菜单画面显示需要很长时间的现象。
Patent PT-1169720-E (PT)
Inventor: COWBURN RUSSELL
IPC: H03K19/168
Filed: 2000-04-07
Abstract: A logic element comprises nanomagnets having a rotational symmetry around an axis selected such that they are superparamagnetic and exhibit substantially zero hysteresis so that a magnetisation of the nanomagnets depends only on the current value of applied field and not on the field history.
Patent PT-1196661-E (PT)
Inventor: BESSELING GERARDUS WILHELMUS M
IPC: C11D11/00
Filed: 2000-07-21
Abstract: In a method and device for the removal of dirt by means of steam and cleaning agent the cleaning agent is injected in a metered way into the steam and atomized, so that the mixture formed is applied in a gaseous state to the dirt to be removed. Such a gaseous mixture has a higher activity than a mixture of steam and droplets of liquid cleaning agent.
Patent PT-1313802-E (PT)
Title: Preparing sterile articles from polymers containing a stabiliser based on a poly(oxyalkylene)
Inventor: WANG QI
IPC: C08L27/06
Filed: 2001-08-30
Abstract: A method of preparing a sterile article is disclosed. A polymer having a halogen-containing repeating unit is prepared that contains about 0.005 to about 65 phr of a stabiliser having the general formula TGOT', where each T is independently selected from R-, R-CO-, -P(R) 2 , -P(OR) 2 , -Si( R ) 3 , or -Si(OR) 3 , T' is T or A[GOT] n , each A is independently selected from LS-Sn(R) 3-q (OLJ) q , (CH 2 ) p S-Sn(R) 3-q (S(CH 2 ) p -J) q , LCO 2 Sn(R) 3-q (OLCO-J) q , or LSn(Y) 3-q (LJ) q  when n is O, from CO, E, CO-E-CO, Si(R) 2 , Si(OR) 2 , (Si(R) 2 G) r , (CO-E-CO-G) r , (CO-G) r , or (E-G) r  when n is 1, and from P, PO and trimellitate when n is 2, Y is -SLJ, -SLJ, -SLOR, -OLJ, -OLR, -S(CH 2 ) p , each R is independently selected from R', aralkyl from C 6  to C 12 , and aryl from C 6  to C 12 , E is alkylene from C 1  to C 12 , m is 1 to 20, n is 0 to 2, p is 0 to 10, q is 0 to 3 and r is 1 to 20. An article is made from the polymer and the article is sterilised with ionising radiation.
Patent PT-1281913-E (PT)
Title: Grate furnace
Inventor: MARTIN JOHANNES
IPC: F23H17/00
Filed: 2002-07-12
Abstract: The grate firing system has a grate made up of overlapping strips. Every second strip is fitted with a dedicated drive (18.1 - 18.2) which agitates it. Each drive is fitted inside its own casing (25.2 -25.4).
Patent PT-1312287-E (PT)
Inventor: WALTER HERBERT
IPC: A47F5/08
Filed: 2002-11-14
Abstract: The suspension device consists of a vertically installed profile with fitting profiles, and a cantilever bracket fitted to the vertical profile with fixing elements complementary to the fitting profiles. The bracket has a clamping section upon which or in which the fixing elements are installed, and the bracket spans the front side and also the two side flanks of the vertical profile. The fixing elements on a clamping section of the spanning section of the bracket are fixed elements, removable elements, spring mounted elements or inherently elastic elements.
Patent PT-1407183-E (PT)
Title: Compressed heat insulation housing
Inventor: JESSEN ERLING
IPC: B26F1/46
Filed: 2002-07-10
Abstract: The insulation element consists of a hollow cylinder with a lengthwise slit for fitting it onto a pipe, made from a block of mineral wool felt by pressing it out with a die. Prior to compression the felt has a density of 10 - 15 kg/m 2>, and contains 3 - 8 % of a reticulated binding agent. It is held in its compressed state by an outer layer of thermoplastic film with an optional reinforcing fibre and an aluminized layer to give it a metallic appearance.
Patent PT-1475008-E (PT)
Inventor: DIETER MORSZECK
IPC: A45C5/14
Filed: 2003-05-09
Abstract: Case (1) comprises a lower case part (3) that is open at the top, a standing surface with wheels arranged on the under side of the lower case part, a lid element (5) with a locking device (25b), and an extendable handle (13) fixed inside the case on an outer wall of the lower case part. The extendable handle is extended through an opening (15) in the case and has a housing (21) fixed on the lower case part. The opening is arranged in the lid element. The lid element and the housing fit together and when the lid element is closed lie closely on at least one peripheral edge of the opening. Preferred Features: The lid element and/or the lower case part are made of a hard material, preferably plastic or a light metal.
Patent PT-1470127-E (PT)
Title: N, n`-dimethylated n-confused porphyrins
Inventor: DOLPHIN DAVID H
IPC: A61K41/00
Filed: 2003-01-29
Abstract: A series of N,N'-dimethylated N-confused porphyrin salts were synthesized through methylation of N-confused porphyrins using MeI in the presence of Na2CO3. These compounds have an intense absorption around 790 nm. It has also been shown that N,N'-dimethylated N-confused porphyrin salts can generate singlet oxygen when irradiated. They are, thus, potential sensitizers for PDT.
Patent PT-1537762-E (PT)
Inventor: DETLEF MANN
IPC: B32B17/10
Filed: 2003-09-05
Abstract: A connector for a flat multilayer element that includes a first rigid glazing pane provided with one or more electrical functional elements and a second rigid glazing pane joined flat to that side of the first rigid glazing pane that is provided with the functional elements. The second pane has at least one cutout for making an electrical connection to the functional elements. A liner is fastened in the cutout by a projection, the edge of which lies in the plane between the two rigid panes and/or catches, via the rear, on an undercut of the cutout. The liner serves as a counterbearing surface for fastening at least one connection piece electrically connected to the functional elements.
Patent PT-1438950-E (PT)
Title: Hair bleaching compositions
Inventor: LEGRAND FREDERIC
IPC: A61K8/891
Filed: 2004-01-12
Abstract: A ready-for-use hair bleaching composition obtained by mixing before use of an anhydrous bleaching composition in paste form and an oil-in-water emulsion of hydrogen peroxide comprising one or more non-ionic and/or anionic surfactants and one or more copolymers comprising one or more units derived from (meth)acrylic acid as a salt or not and one or more units derived from an ester of (meth)acrylic acid with an 8-30C fatty alcohol.  The anhydrous bleaching composition comprises one or more peroxygenated salts, an alkaline agent and 15-35 wt.% of one or more inert organic liquids. Independent claims are included for a method of bleaching hair by applying the ready- to-use composition, allowing to stand, rinsing with water, shampooing and optionally drying and for a kit comprising at least two compartments, one of which contains the anhydrous composition and another the oil-in-water hydrogen peroxide emulsion.
Patent PT-1604991-E (PT)
Title: Antitumor effect potentiator and antitumor agent
Inventor: UCHIDA JUNJI
IPC: A61K31/519
Filed: 2004-03-11
Abstract: The present invention provides an antitumor effect potentiator for enhancing antitumor activity of an antitumor agent comprising tegafur in a therapeutically effective amount, gimeracil in an amount effective for enhancing an antitumor effect, and oteracil potassium in an amount effective for inhibiting a side effect. The antitumor effect potentiator comprising at least one member selected from the group consisting of folinic acid and pharmacologically acceptable salts thereof. The present invention also provides a method for enhancing an antitumor effect of an antitumor agent comprising the step of administering to a patient the aforementioned antitumor effect potentiator; a method for inhibiting the growth of a tumor comprising the step of administering to a patient the aforementioned antitumor effect potentiator and a method for cancer treatment comprising the step of administering to a patient the aforementioned antitumor agent.
Patent PT-1687577-E (PT)
Title: Charging device, especially charging stock preheater
Inventor: FUCHS GERHARD
IPC: F27D13/00
Filed: 2004-11-25
Abstract: To facilitate a trouble-free charging of scrap metal having differing constitutions, such as light and heavy scrap metal, from a lower discharge opening of a shaft-shaped charging device or a charging stock preheater (1) into a melting vessel by a pusher (13), the lateral surfaces of the pusher (13) are formed so as to converge from the upper side to the lower side and the actuating device (2) of the pusher (13) is pivotably supported in a frame structure (3) about a horizontal axis. In addition, the upper boundary of the discharge opening for the charging stock from the shaft (2) is preferably formed by a horizontal, rotatably supported roller (26), more preferably with engaging elements (30) distributed around the circumferential surface. Sections of the charging device that are severely mechanically stressed are preferably formed by steel billet sections connected to form a structural unit.
Patent PT-1645691-E (PT)
Title: Transition structure
Inventor: SASSE ULRICH
IPC: E01F15/04
Filed: 2005-06-15
Abstract: The structure transits between two restraint systems with greater and lower compliance. The system with greater compliance comprises concrete restraint units that are set side by side on a road surface. The restraint systems are connected in an abutting manner. The system with greater compliance comprises damping units (20a-20i) on a side averted from roadway, where the damping units reduce compliance section.
Patent PT-1796825-E (PT)
Title: Equipment for the atomisation of a liquid stream by means of a dispersing gaseous stream and for mixing the atomised product with a further suitable gaseous stream in equipment for effecting catalytic partial oxidations and relative catalytic partial
Inventor: BARTOLINI ANDREA
IPC: B01J19/24
Filed: 2005-09-26
Abstract: Equipment for the atomization of a liquid stream by means of a dispersing gaseous stream and for mixing the atomised product with a further suitable gaseous stream, characterized in that it comprises: a feeding zone (A) equipped with means suitable for feeding the liquid stream, the gaseous dispersing stream and further gaseous stream; one or more two-stage atomization zones (N) of the liquid stream by means of the gaseous dispersing stream; a distribution zone (D) of the further gaseous stream.
Patent PT-1716883-E (PT)
Title: Device and set for implants
Inventor: BUSSMANN OLIVER
IPC: A61M37/00
Filed: 2006-04-28
Abstract: The cylinder (1) single piece is formed/consists of two shell halves connected with each other. The cylinder exhibits a length smaller than the cannula with piercing tip, shaft and head. The ball (6) with the spring (7) fits into a recess of the hole drilling (3). The recess is a waist/a tapering (5) as seat for the ball, which is formed as a cross hole (4) fits into the hole drilling. The cross hole exhibits a seat formed as outside fastener of the cross hole. The locking element consists of a sterilizable plastic and high-grade steel. An independent claim is included for a set comprising the cylinder form device with cannula and implant.
Patent PT-1702855-E (PT)
Title: Container with displaceable handle
Inventor: MELHEDE LINDA
IPC: B65D25/32
Filed: 2006-03-17
Abstract: A container (1) comprising: a container body (2), a lid (3), and at least one handle (4) where the ends (5) of the at least one handle (4) are pivotably connected to opposite sides of said container body (2). At least one end (5) of the at least one handle (4) is displaceable between a first position (8) and a second position (9). In this way, a container is provided where the effective length of the handle can be increased or decreased. Therefore, the handle can be made to assume different positions. In a first position, the handle is resting on the edge of the container whereby the handle is easily visible and accessible to the user. In another position, the handle is resting along the sides of the container allowing a user to access the contents of the container.
Patent PT-1863947-E (PT)
Title: Hard material layer
Inventor: KALSS WOLFGANG
IPC: C23C14/28
Filed: 2006-01-19
Abstract: A novel functional layer (A) of hard material, applied to a workpiece by arc-physical vapor deposition (PVD) and formed from electrically insulating oxide(s) of one or more of Group IV, V or VI transition metals, aluminum, silicon, iron, cobalt, nickel and yttrium, has a noble gas and/or halogen content of less than 2%. Independent claims are included for: (a) a workpiece selected from tools and machine components, provided with a coating (A) as above; and (b) a method for depositing a layer of material (A'), as for (A) but without restrictions on noble gas and/or halogen content, on a workpiece in a vacuum process plant with an arc evaporation source operated by a DC supply, where a pulsed current supply is superimposed, the target of the source contains a metal and the evaporated metal is converted into oxide in an oxygen-containing reactive gas atmosphere.
Patent PT-1958896-E (PT)
Title: An overhead cable conveyor system with a semicircular, deep, hollow conveyor belt
Inventor: ANDREETTO ALESSANDRO
IPC: B65G21/04
Filed: 2007-06-08
Abstract: An overhead cable conveyor system comprises a conveyor belt (30) extending between two ends (10, 20) of the system so as to define an upper, conveyor pass (31) and a lower, return pass (32) of the belt, and a pair of upper carrying cables (40) and a pair of lower carrying cables (50) which extend between the ends (10, 20) of the system and can support the conveyor belt. A plurality of rigid frame elements (70) are distributed along the conveyor pass (31). Each frame element is suspended on the pair of upper carrying cables and on the pair of lower carrying cables. An upper series (80) of rollers and a lower series (90) of rollers are suspended on the frame element and support the conveyor pass and the return pass of the belt. Belt centering devices (100, 100', 110, 120, 130) are provided and are of the type comprising an upper control cable (120) and a lower control cable (130) to which the central points (80c, 90c, 80c') of the upper series (80) and of the lower series (90) of rollers are articulated.
Patent PT-2173468-E (PT)
Title: Anti-caking compositions for fertilizers
Inventor: MARTINEZ JOAN ANTONI RIAZA
IPC: C05G3/30
Filed: 2008-07-02
Abstract: The invention relates to novel compositions for preventing caking and crust formation in several types of manures or fertilizers in the form of granular solids. Said compositions comprise at least one phosphoric ester and at least one fatty trialkylamine of formula (III) wherein R1 represents a linear or branched alkyl, alkenyl or alkynyl group containing between 6 and 24 carbon atoms, R2 represents an alkyl group containing between 1 and 5 carbon atoms, R3 represents a linear or branched alkyl group containing between 1 and 5 carbon atoms, or alkyl, alkenyl or alkynyl group containing between 6 and 24 carbon atoms.
Patent PT-2271842-E (PT)
Title: A fan assembly
Inventor: DYSON JAMES
IPC: F04D25/10
Filed: 2010-02-18
Abstract: A fan assembly includes a device for creating an air flow and an air outlet for emitting the air flow. The air outlet is mounted on a stand for conveying the air flow to the air outlet. The fan assembly also includes a tilt mechanism for tilting the air outlet relative to at least part of the stand. The tilt mechanism comprises a flexible hose defining, at least in part, an air passage through the tilt mechanism.
Patent PT-2509185-E (PT)
Title: Balancer circuit for rechargeable batteries
Inventor: DOORNEKAMP MARINUS HENDRIKUS
IPC: H02J7/00
Filed: 2011-04-08
Abstract: Balancer circuit for a cell in a rechargeable battery, having connecting terminals (T1, T2) for connection of the balancer circuit to the cell. A first resistor (R1) is connected to one of the connecting terminals (T1; T2), and a voltage switch (S; U1) is arranged in series with the first resistor (R1) and connected to the other one of the connecting terminals (T2; T1). The voltage switch (S; U1). e.g. an adjustable voltage reference circuit (U1), is operable to shunt a balancing current through the first resistor (R1) when a load voltage sensed over the connecting terminals (T1, T2) is higher than a threshold voltage.
Patent PT-835084-E (PT)
Inventor: EDWARDS JOHN VICTOR
IPC: A61F5/448
Filed: 1995-06-09
Abstract: PCT No. PCT/GB95/01352 Sec. 371 Date Dec. 12, 1996 Sec. 102(e) Date Dec. 12, 1996 PCT Filed Jun. 9, 1995 PCT Pub. No. WO95/34258 PCT Pub. Date Dec. 21, 1995An ostomy coupling includes two rings which can be interengaged concentrically. The inner ring (1a) has a peripheral flange (2) at one end for attachment to an abdominal pad (3a) and a radially outwardly directed peripheral bead (6) at its other end; while the outer ring (1b) has a radially outwardly directed flange (7) for attachment to an ostomy pouch (8a), and a lip (11) which engages behind the peripheral bead (6) on the inner ring in order to secure the two rings of the coupling together. The flange (7) on the outer coupling ring includes a stiffening member (10) which is disposed so as to restrain the outer coupling ring from expanding away from the inner coupling ring when the two parts of the coupling are interengaged in use.
Patent PT-817571-E (PT)
Inventor: YANG DAVID KEE
IPC: A23L2/38
Filed: 1996-02-20
Abstract: Chilled or shelf stable beverage products which are physically stable, visually opaque and do not precipitate over time, and a process for preparing these products, are disclosed. These products contain from about 5 to about 99.8% milk, from about 0.05 to about 0.8% of a food stabilizer and a food acid. The first step of the process involves mixing milk with a food stabilizer under high shear mixing conditions to form protein/stabilizer particles having a median particle size of less than about 0.8 microns. Then, while still maintaining the particle size of the protein/stabilizer particles at less than about 0.8 microns, the protein/stabilizer mixture is acidified to a pH ranging from about 3.2 to about 4.5. In order to maintain the requisite particle size of the protein/stabilizer particles during the acidification step, the protein/stabilizer mixture is maintained under high shear mixing conditions at a temperature ranging from about 4 to about 30 DEG  C.
Patent PT-815124-E (PT)
Inventor: VASQUEZ MICHAEL L
IPC: C07K5/078
Filed: 1996-03-07
Abstract: Selected heterocyclecarbonyl amino acid hydroxyethylamino sulfonamide compounds are effective as retroviral protease inhibitors, and in particular as inhibitors of HIV protease. The present invention relates to such retroviral protease inhibitors and, more particularly, relates to selected novel compounds, composition and method for inhibiting retroviral proteases, such as human immunodeficiency virus (HIV) protease, prophylactically preventing retroviral infection or the spread of a retrovirus, and treatment of a retroviral infection.
Patent PT-918797-E (PT)
Inventor: PONATH PAUL D
IPC: A61P37/00
Filed: 1997-08-06
Abstract: The present invention relates to humanized immunoglobulins having binding specificity for ±4²7 integrin, comprising an antigen binding region of nonhuman origin (e.g., rodent) and at least a portion of an immunoglobulin of human origin (e.g., a human framework region, a human constant region). In one embodiment, the humanized immunoglobulin can compete with murine Act-1 for binding to human ±4²7 integrin. In a preferred embodiment, the antigen binding region of the humanized immunoglobulin comprises each of the complementarity determining regions of the light and heavy chains of the murine Act-1 antibody. The present invention further relates to a humanized immunoglobulin light chain or heavy chain, isolated nucleic acids comprising a sequence which encodes a humanized immunoglobulin or immunoglobulin chain of the present invention (e.g., a single chain antibody), constructs comprising a nucleic acid of the present invention, and host cells comprising a nucleic acid of the present invention useful in a method of preparing a humanized immunoglobulin. The humanized immunoglobulins can be used in diagnostic and therapeutic applications in humans, for example to control lymphocyte infiltration (including recruitment and/or accumulation) to mucosal tissue.
Patent PT-869958-E (PT)
Inventor: DREJER JORGEN
IPC: C07D487/04
Filed: 1997-10-01
Abstract: The present invention relates to novel indole-2,3-dione-3-oxime derivatives capable of antagonising the effect of excitatory amino acids, such as glutamate. More specifically the novel indole-2,3-dione-3-oxime derivatives of the invention may be described by general formula (I), wherein R3 represents "Het", or a group of formula (II), wherein "Het" represents a saturated or unsaturated, 4 to 7 membered, monocyclic, heterocyclic ring, at least one of R31, R32, and R33 independendy represents hydrogen, alkyl, or hydroxyalkyl, and at least one of R31, R32, and R33 independently represents (CH2)nR34; wherein R34 represents hydroxy, carboxy, alkoxycarbonyl, alkenyloxycarbonyl, alkynyloxycarbonyl, cycloalkoxycarbonyl, cycloalkylalkoxycarbonyl, aryloxycarbonyl, aralkoxycarbonyl, CONR35R36, or "Het"; wherein n is 0, 1, 2, or 3; and R5 represents phenyl, naphthyl, thienyl, or pyridyl, all of which may be substituted. "A" represents a ring of five to seven atoms fused with the benzo ring at the positions marked "a" and "b", and formed by the following bivalent radicals: a-NR6-CH2-CH2-b; a-CH2-NR6-CH2-b; a-CH2-CH2-NR6-b; a-NR6-CH2-CH2-H2-b; a-CH2-NR6-CH2-CH2-b; a-CH2-CH2-NR6-CH2-b; a-CH2-CH2-CH2-NR6-b; a-NR6-CH2-CH2-CH2-CH2-b; a-CH2-NR6-CH2-CH2-CH2-b; a-CH2-CH2-NR6-CH2-CH2-b; a-CH2&mdas