baber/WOPTO huggingface dataset:
Patent NL-7810876-A (NL)
Title: Vegetable clamp esp. for flax and pulses - is formed with stalks angled upwards toward each other in rows and with central triangular vent hole at base
IPC: A01D45/06
Filed: 1978-11-01
Abstract: The method is for the formation of a clamp for flax, beans peas, etc. the vegetable plants (1, 3) being formed into one or more rows and the separate conduct of such strips so that the plants can be transported as a flat strip. Where flax is handled, the stalks are picked up in two rows with the plants pointing in the same direction, then separately conducted so that the seed pods on the stalks are pointing towards or away from each other, and the layers next to each other hang down from the tracks. Prior to the strips or rows being laid down in layers, the stalks on each strip are connected by a binder. At the clamp base, the stalks are formed so that a triangular cross-sectional air circulation passage (5) is formed.
Patent NL-8000424-A (NL)
Inventor: HAZENBROEK JACOBUS E
IPC: A22C21/00
Filed: 1980-01-23
Abstract: A device for cutting slaughtered poultry in separate pieces. A bird is held by at least one radial processing device which is movable on a frame by a driving device which is provided with a processing arm, at the side facing the frame being provided with an adjustment mechanism which can reorient the processing device during the movement of the arm in a number of various positions of rotation with respect to the arm and a blocking mechanism which can fix the processing device in said positions of rotation, with a deblocking mechanism for unlocking the processing device, and said processing arm at the side facing away from the frame being provided with a stretching mechanism for holding the bird. A number of driven knives mounted on the frame comprise of a first knife for cutting the breast, a second knife for cutting the first wing, a third knife for cutting the bird lengthwise in two halves, a fourth knife for cutting the other wing, a fifth knife for cutting the entire leg and a sixth knife for cutting the lower legs from the rumps.
Patent NL-8002415-A (NL)
Title: Producing colloid drilling mud suspension - by rotary pulsator unit connected to graded bead mill unit driven by pulsator outlet flow
IPC: B01F5/00
Filed: 1980-04-25
Abstract: The mechanism is intended for producing an ultra-fine dispersion of the solid phase of a drilling mud suspension. It comprises a pulsator unit having a housing with inlet and outlet and containing a stator and a driven rotor with alternate cylindrical portions, each provided with radial ports. A dispersion mill with outlet has its inlet connected to the outlet and its milling chamber contains beads as the milling medium. Its drive shaft carries discs dividing the chamber into interconnected compartments. The unit contains at least one further stator and rotor defining compartments which are connected in series and each connect to a compartment of the mill via an overflow line. Producing ultra-fine colloid suspension, particularly for use as drilling mud. The proposed mechanism produces a mud suspension with predetermined colloid particle size in one operation which is not achievable by e.g. an electro-hydraulic unit, or a bead mill unit or pulsator unit on its own. In existing bead mill units, accretion of colloid particles interferes with further size reduction of coarser material and pumps are required which increases energy consumption. In existing pulsator units repeated recirculation is required to achieve the desired colloid particle size, resulting in high energy consumption and long treatment time, whilst the energy contained in the suspension at the outlet is not used, i.e. is wasted. The proposed mechanism minimises energy consumption and treatment time.
Patent NL-8300438-A (NL)
IPC: G05D16/16
Filed: 1983-02-04
Abstract: A pressure regulating system with amplifier is provided for preparing the mixture of a gas with air for a combustion engine. The pressure regulating system comprises a first (9) and second (14) inlet conduit opening in a first chamber (13) through which gas is supplied under constant pressure. The first inlet conduit (9) is separated from the first chamber by a valve (12) connected to a diaphragm (10). The second inlet conduit (14) comprises an adjustable restriction (15), through which a constant small quantity of gas being delivered to the first chamber (13). The pressure regulating system also comprises an outlet conduit (31) being directly connected to the first chamber (13) and to the inlet of the user and a second chamber (23) being separated from the first chamber by said diaphragm (10). To said second chamber (23) a third inlet conduit (16), provided with an adjustable restriction (19), is connected, through which a constant small quantity of gas is delivered to the second chamber. The second chamber (23) is also connected to the first chamber i.e. outlet conduit, through a variable restriction (18).
Patent NL-8301787-A (NL)
IPC: C13K11/00
Filed: 1983-05-19
Abstract: Process for the recovery of monosaccharides from poly-, oligo- and/or disaccharides containing tuberous plants by reducing the roots of the tuberous plants by means of grating, extracting the reduced material with unwarmed water, for instance of at most 18°C, subjecting the extract at first to an ultrafiltration and then to a demineralisation after which the saccharides present in the obtained solution are hydrolyzed by means of a cation exchanger (H<sup>+</sup>-form) or by acidification.
Patent NL-8402685-A (NL)
Title: Zigzag folded sheet material - comprises separate strips glued to flexible sheet along edges
IPC: E06B9/262
Filed: 1984-09-03
Abstract: The sheet material folds into a zigzag pattern, and comprises multiple parallel rectangular strips hinging together along their edges to fold into a packet. The end strip is pulled off at right angles to form a curtain. The strips comprise separate pieces of relatively stiff material (1), glued along the edges at one or both sides to flexible sheet material (2). One lengthwise edge of each strip can be arranged to overlap that of the next one.
Patent NL-8403514-A (NL)
IPC: H01B13/32
Filed: 1984-11-19
Abstract: A method of and apparatus for making the cable core of a telecommunication cable water-tight in the longitudinal direction, in which a filling material having a base of petroleum jelly is heated to a temperature above the drop point, is supplied under pressure to a filling head (5), is divided into a number of jets distributed over the circumference of the cable core, is passed through the filling head (5) with simultaneous conversion of the static pressure into kinetic energy and is injected through the outer layer of the cable core into the heart of the cable core, in which a reconversion of the kinetic energy into static pressure is effected and all the interstices and gaps between the single wires of the cable core are filled with the filling material.
Patent NL-8601916-A (NL)
Title: Easily assemblable panel for partitions or displays - has two walls with alternating triangular section connection pieces along edges and dove-tailed strips along top and bottom
IPC: E04B2/74
Filed: 1986-07-24
Abstract: The panel has connection parts for coupling a panel with corresp. parts. Each panel has two side walls which are parallel to each other and on whose edges the connecting parts are formed. They are triangular in cross-section with a triangular passage, bordered by projections one above the other. Some are on the edge of the first side wall alternating with others on the second side wall. They are formed by extensions of the wall and cross members returning to the opposite side, and extend along the panel edge for attaching similar panels. On top and bottom are dove-tailed strips for possible further panel attachment.
Patent NL-8802657-A (NL)
IPC: A61K9/107
Filed: 1988-10-28
Abstract: A drug carrier in the form of a fat emulsion, which contains a drug and has a mean particle diameter of less than 200 nm.
Patent NL-9100904-A (NL)
Title: Portable microprocessor for mounting on bicycle handlebar - prompts newspaper deliverer to deliver correct publications to all addresses on round
IPC: G06Q10/00
Filed: 1991-05-27
Abstract: The robust and watertight housing (1) is fixed by a bracket (2) to the handlebar (3) of a delivery bicycle. The housing contains a microcomputer chip (4), memory (5), rechargeable battery (6), read-out display (7), operating keys (8) and external connector (9). At the distribution centre, the memory of the unit is preloaded with data from a central computer. The data can be about the next delivery round, e.g. tiles and number of publications to be delivered to each address in turn.
Patent NL-9201486-A (NL)
Title: Method and device for feeding printing paste to a stencil which has been placed in a rotary screen-printing machine
IPC: B41F15/40
Filed: 1992-08-20
Abstract: The invention relates to a method and device for feeding printing paste to a squeegee which interacts with a rotary screen-printing stencil 1 and comprises a squeegee tube 2 and squeegee means 8, and which together with the stencil 1 is incorporated in a suitable machine for rotary screen-printing. Under the influence of printing- paste feed means 6, the printing paste is moved out of a printing-paste container 5 into the squeegee tube 2 via a connecting line 4. At the end of a printing operation, printing-paste displacement means 9 are activated in order to substantially remove the printing paste which is located in the squeegee tube 2 and the connecting line 4 from these components and preferably to return it to the printing-paste container 5. <IMAGE>
Patent PT-75562-A (PT)
Title: Tire retreading system with envelope pressure application
Inventor: BREWER DONALDEE
IPC: B29C35/04
Filed: 1982-09-15
Abstract: The present invention covers the method and apparatus to retread tire casings using a precured tread system where an envelope or flexible fluid type member is used to cover a retread tire casing assembly and then placed in an autoclave where the autoclave is pressurized and a reduced differential pressure is provided between the envelope member and the precured tread. This invention includes the automatic pressurizing of the system and the monitoring of the system during operation as a total system and/or four individual curing stations.
Patent PT-79231-A (PT)
Title: Process for the preparation of immune interferon
Inventor: KUNG HSIANG-FU
IPC: C12P21/02
Filed: 1984-09-19
Abstract: A method for the extraction of intact recombinant human immune interferon with guanidine-HCl is disclosed. This method permits the purification to homogenity of intact recombinant human immune interferon.
Patent PT-92449-A (PT)
Inventor: RAEYMAEKERS ALFONS HERMAN MARG
IPC: A61K8/67
Filed: 1989-11-29
Abstract: The present invention concerns a pharmaceutical or cosmetical composition comprising an inert carrier, an effective amount of retinoic acid or a derivative thereof, or a stereochemically isomeric form thereof and an effective amount of a compound of formula <CHEM> an acid addition salt thereof or a stereochemically isomeric form thereof. The use for the manufacture for treating subjects suffering from disorders which are characterized by an increased proliferation and/or abnormal differentation of normal, preneoplastic or neoplastic epithelial cells the growth of which is sensitive to the action of retinoids is also disclosed.
Patent PT-93252-A (PT)
Inventor: FERRO ALBERTO
IPC: A61K8/00
Filed: 1990-02-23
Abstract: An antimycotically-active nail varnish, which contains an antimycotically-active substance selected from 4-[3-[p-( alpha , alpha -dimethyl-benzyl)-phenyl]-2-methyl-propyl]-2,6-dimethylmorpholine, 4-[-[p-(1,1,-dimethylpropyl)-phenyl]-2-methyl-propyl]-2,6-dimethyl-mor pholine and salts thereof and a water-insoluble film former which a copolymerizate of acrylic acid esters and methacrylic acid esters having a low content of quaternary ammonium groups, is described.
Patent PT-95689-A (PT)
Title: Method for obtaining a methionine N&alpha- acetyltransferase
Inventor: SMITH JOHN A
IPC: C12P/
Filed: 1990-10-25
Abstract: The present invention relates to a method for obtaining a methionine Nα-acetyltransferase, by means of the expression of a suitable cell, in such a way as to obtain a product essentially free of natural contaminants. A methionine Nα-acetyltransferase enzyme was identified in yeast.  The existence of the enzyme defines a gene for methionine Nα-acetyltransferase which can be cloned or altered.  The cells expressing the normal or variant forms of this enzyme constitute important tools for determining the amino acid sequence of non- characterized proteins.  These cells are also important tools for the expression of a recombinant protein which lacks an acetyl group in its α-amino group.
Patent PT-95826-A (PT)
Inventor: ENGEL JURGEN
IPC: A61K47/18
Filed: 1990-11-08
Abstract: Use of R- alpha -lipoic acid (i.e. R-1,2-dithiacyclopentane-3-valeric acid) (I) or its salt is claimed for the preparation of a cytoprotective medicament.
Patent PT-99471-A (PT)
Title: Process for the preparation of 1-&beta-ethyl-1&alpha- (hydroxymethyl)-1,2,3,4,6,7,12,12b&alpha-octahydroindole [2,3-a]-quinolizine and intermediate compounds
Inventor: KREIDL JANOS
IPC: C07D471/14
Filed: 1991-11-08
Abstract: The invention relates to a process for the preparation of (-)-1beta-ethyl-1alpha-(hydroxymethyl)-1,2,3,4,6,7,12,12b alpha-octahydroindole [2,3-a]-quinolizine of formula I <IMAGE> by reacting 1-ethyl-2,3,4,6,7,12-hexahydroindole [2,3-a]- quinolizine of formula II <IMAGE> with an approximately equimolar quantity of formaldehyde or a polymerized form of the latter and, after isolation, if desired, treating the racemic 1-ethyl-(hydroxymethyl)- 1,2,3,4,6,7-hexahydro-12H-indole [2,3-a]-quinolizine compound of formula III <IMAGE> with a resolving agent in a quantity less than an equimolar quantity, and reducing the 1beta-ethyl-1alpha- (hydroxymethyl)-1,2,3,4,6,7-hexahydro-12H-indole-[2,3-a]- quinolizine-5 salt of formula IV <IMAGE> in which X- represents the radical of an optically active acid, and, if desired, releasing the free base of formula I. The intermediate compounds of formulae III, IV and V are also new, so their processes of preparation are also included in this invention. The compound of formula I has peripheral vasodilatory properties.
Patent UA-13381-A (UA)
Title: Flow-deflecting composition for treatment of heterogeneous seam
IPC: E21B43/32
Filed: 1988-06-22
Abstract: The invention relates to oil industry, in particular to treatment of underground formations through which oil, water, gas or geo-thermal well goes. Flow-deflecting composition for treatment of heterogeneopus seam includes polymer, surface-active substance and water. As polymer it includes polycyclopentadien and/or polymethyl cyclopentadien, and as surface-active substance – etoxylated stearyl alcohol with hydrophilic-lipophylic balance 15, or etoxylated ponylphenol with hydrophilic-lipophylic balance 16.9.
Patent UA-6565-A (UA)
Title: Device for control of deflections from straightness
Filed: 1990-12-17
Abstract: Device has body, basic supports installed on its ends, and metering units, and center of weight of the body is placed in plane with equal separation from basic supports. It is equipped with rod connected to the body by means of uncoupling unit arranged as cardan suspension, mechanism of axial displacement of rod with indicator of distance traveled, mechanism for rotation of controlled part with indicator of angular turn and block for processing signals from indicators, basic supports are arranged as two rings in form of truncated torus, meter units are arranged as touch and linear displacement indicators, at that indicator of displacement is arranged as elastic console beam in form of plate on both surfaces of which with axial symmetry four resistors are installed, that one is fixed with one end in the body, on its both surfaces with axial symmetry four tenso-resistors are installed, and touch indicator – as rod installed in the body normally with respect to its axis at fixed distance between rings of basic supports and its inner end arranged as hemi-sphere is spring-supported with free end of the beam.
Patent RS-113604-A (RS)
Title: High sensor module for ndt inspection of wire rope by main flux method
Inventor: NIKOLIC STEVAN
Filed: 2004-12-24
Abstract: The sensor module harness framework is attached over a wire rope under inspection and laid into sliding bearings enabled to rotate around its axis i.e. rope. By rotating of the said harness by a suitable driver the pre-sensor coil is over winded on the sensor module itself. This approach enables definition of the sensor module parameters the way to fit particular wire rope inspection. By insertion of the sensor module into magnetic head, which produce magnetic saturation of the rope, detection of main flux changes are enabled due to changes of effective metallic area of the rope during the relative motion between the rope and the sensor module take place. The signals obtained such way are rather good quality ones in sense of signal to noise ratio. Besides, they are suitable for further signal processing as relevant reference for rope physical conditions estimation.
Patent BG-104719-A (BG)
Title: Glucocorticoid-selective anti-inflammatory agents
Inventor: COUGHLAN MICHAEL J
IPC: A61K31/4738
Filed: 2000-08-28
Abstract: Compounds having the formula are useful for partially or fully antagonizing, repressing, agonizing, or modulating the glucocorticoid receptor and treating immune, autoimmune and inflammatory diseases in a mammal. Also disclosed are pharmaceutical compositions comprising compounds of formula (I) and methods of inhibiting immune or autoimmune diseases in a mammal. 36 claims
Patent BG-109026-A (BG)
Title: Alarm system with induction sensor for locks of safes
Inventor: KOSTOV KONSTANTIN
IPC: E05B45/06
Filed: 2005-01-27
Abstract: The alarm system is used for the safety of locks of safes against any attempts at their unlocking or breaking by offenders. It reacts to any change of the inductivity of a sensor supplied from a source of high frequency electric voltage. The induction sensor (1) is in the form of a miniature flat coil of thin conductor stuck directly onto the lock of the safe, around the keyhole. In case of connection to a high frequency generator (2) this sensor shall have specified inductive resistance depending on its inductivity and the frequency of the supply voltage. When a metal object is fitted in the middle of the sensor, i.e., in the door lock, its induction resistance shall change. This change of inductive resistance is measured and inverted into an electric signal by the voltage divider (3). The electric signal produced is rectified by the rectifier (9), is amplified in the amplifier (4) and is sent to logical unit (5) where the preset operational algorithm is implemented: the signal actuates time relay (10) which counts, for example, to 8-10 s. If during these 8-10 s from the time of fitting a metal object in the lock, the lock is unlocked and the door opens, mechanical contact (6) discontinues the operation of the programme and the alarm is not actuated. If the door does not open by the expiry of the 8-10 s period, logical unit (5) sends a signal to the central alarm system (8) of the object for announcing to the security officers or directly actuates siren (7). When the door lock is closed and locked a second time relay (11) locks the operation of the alarm in order to secure the time necessary for leaving the premise and locking the lock, after which the alarm is activated. The sensor is self-protected against any cutting off or shunting of the cables, as in both cases the voltage divider prepares an output signal and actuates the alarm.
Patent BG-112209-A (BG)
Title: Method of genetic determination of predispositions for vitamin deficits and reduced detoxification
Inventor: GLUSHKOVA MARIA
IPC: C12Q1/68
Filed: 2016-02-08
Abstract: The method includes a set of information about the condition of the individual, a genetic analysis of polymorphisms, divided into five groups of genes, where group 1 includes genes encoding enzymes responsible for methylation processes and indirectly associated with some vitamin deficiencies. Group 2 includes genes, encoding enzymes responsible for methylation processes and directly related to some vitamin deficiencies. Group 3 includes genes responsible for the metabolization of vitamins in the human body. Group 4 includes genes related to the cell membrane's strength and function, and Group 5 includes genes, encoding enzymes responsible for detoxification in the human body. Their analysis is carried out by taking a biological material, isolating DNA, and then is performed polymerase chain reaction (PCR) to amplify fragments of DNA containing the corresponding genetic variations using germ-primers. Direct sequencing of genetic variations and reporting of results through specialized software follows afterwards. The results obtained are analyzed by a computer program divided into two modules, where module 1 interprets the influence of genes from groups 1 to 4, and module 2 interprets the influence of genes from group 5 and thus links the results of the genetic test with the presence / absence of individual risk to deficiencies of vital vitamins and decreased detoxification capacity in the relevant panels. The need for appropriate nutritional supplements and vitamins is established and an individual diet is prepared.
Patent CN-1392632-A (CN)
Title: 在器件衬底的外表面上形成有导体的天线构件
Inventor: TAKAYOSHI KONISHI
IPC: H01Q1/36
Filed: 2002-06-04
Abstract: 一种天线构件，它包括由短路导体连接起来以形成负载电感的并行的第一导体和第二导体。接地导体形成于一器件衬底的外表面上，该器件衬底上形成有导电线，该导电线包括第一导体，第二导体和短路导体。该接地导体的端接头与导电线相连，并在其前端被提供地电位。由于接地导体以与常规的短引线相类似的方式起作用，因此该天线构件可以提供两倍数量的辐射电阻。
Patent CN-1452934-A (CN)
Inventor: CHOL KIM
IPC: A21C15/00
Filed: 2002-09-04
Abstract: 一种包括上、下端滚轮和条形码扫描器的制面包机。上、下端滚轮卷绕包含面包原料用于形成生面团的混合袋。条形码扫描器读取粘贴于混合袋上的条形码，这样当混合袋在上、下端滚轮转动作用下发生卷绕时，条形码扫描器在与上、下端滚轮中的一个滚轮处于接触状态时读取条形码。上端滚轮包括平面部分和弓形部分。平面部分设置有弓形导向部分以与弓形部分一起形成圆形导面。
Patent CN-1529606-A (CN)
Inventor: LAMPE J
IPC: A61P1/02
Filed: 2002-02-01
Abstract: 本发明涉及与药用酸或适于食品的酸混合的含亚硒酸盐或硒酸盐的制剂，其用于制备治疗创伤的药剂。
Patent CN-1537248-A (CN)
Inventor: JOHNSON R B
IPC: G02B30/27
Filed: 2002-06-10
Abstract: 一种双凸透镜阵列(400)用于产生通过双凸透镜阵列观察的一个图像的视觉效果，它包括多个双凸透镜(402，404，406)(402a，404a，406a)设置为彼此相邻。每个双凸透镜包括一个双凸透镜元件，在一个侧面上，以及一个基本平坦的表面(407)在相对的侧面上。每个双凸透镜元件具有一个顶点和一个横截面，包括一个椭圆形(408)的一部分。代替的方案是，横截面能够具有一个长轴线，设置为基本垂直于每个相应的双凸透镜元件的基本平坦的表面。每个相应的双凸透镜元件的顶点设置为基本沿着椭圆形的长轴线。
Patent CN-1622829-A (CN)
Title: 固化的组织免疫佐剂
Inventor: TADAO ONO
IPC: A61K39/00
Filed: 2002-03-05
Abstract: 本发明提供一种免疫佐剂，它具有较强的细胞刺激效果且对于生物体来说是安全性较高的免疫佐剂，它含有由选自包括人类在内的动物的组织、细胞以及由这些成分组成的群中的固化材料制备、通过有机溶剂和/或热水洗涤而除去可溶性成分的碎片，在该碎片中固定有来自微生物的可溶性成分。
Patent CN-1742183-A (CN)
Inventor: JUN-SANG CHOI DAE-HWAN LEE KYU
IPC: F24F1/02
Filed: 2002-12-18
Abstract: 本发明公开了一种空调器，该空调器包括具有室内空间区(210)和室外空间区(310)的壳体(100)；安装在室内空间区的室内单元(200)，它抽吸空气并通过第一热交换器(220)冷却被吸入的空气；安装在室外空间区的室外单元(300)，它抽吸空气并通过第二热交换器(320)将热量释放到外部；及安装在室外空间区内的涡轮风扇(330)，它用于形成气流，以使空气流向第二热交换器。
Patent CN-1441264-A (CN)
Title: 圆环形达曼光栅
Inventor: ZHOU CHANGHE
IPC: G02B27/44
Filed: 2003-01-28
Abstract: 一种圆环形达曼光栅，其特点是一种在透明介质上形成有多个同心环带位相分布的位相板，该位相板的大小与衍射极限透镜的孔径相当，所述环带的位相分布为同一圆环内的位相值是相同的，所述相邻环带的位相值是0和φ相间的。本发明可对激光束远场衍射光斑各级谱光强度进行修正，实现特定各级谱的等强度圆环形光强分布。本发明给出了优化后能满足激光远场衍射各级谱在峰值强度差在10％以内要求下的位相板制造参数，可用于光束整形、激光显示、激光光束耦合、强激光能量集中和波前平顶化和其它需要多级圆环形远场衍射光斑的各种仪器中。
Patent CN-1579185-A (CN)
Title: 天然高香液体茶的加工方法
Inventor: ZHANG ZHENGZHU
IPC: A23F3/40
Filed: 2003-07-31
Abstract: 本发明公开一种天然高香茶的加工方法，本发明所要解决的技术课题是收集液体茶加工过程中茶叶萃取后剩余的茶渣，用酸水解的方法释放其中的键合态香气物质，再将释放后的香气物质回收后重新添加到液体茶中以提高液体茶香气品质。本发明的技术方案包括以下步骤：在液体茶加工过程中，收集茶叶萃取后剩余的茶渣并用机械破碎，通过酸水解方法释放茶渣中的键合态香气，香气通过蒸馏回收后，重新添加进液体茶中，从而明显改善液体茶香气品质。
Patent CN-1656364-A (CN)
Inventor: MATTHEW BUTLER
IPC: G01J3/28
Filed: 2003-05-22
Abstract: 本发明的第四实施例是产生经过温度补偿的吸收光谱的方法。该方法包括步骤：a.提供样本光谱和背景物体的估测温度；b.从关于已知的背景温度的已知的温度光谱集合中，选择至少两个已知的温度光谱，其表示高于和低于估测温度的背景温度；c.将样本光谱同已知的温度光谱进行比较，以便于确定样本背景光谱；和d.从样本光谱和背景光谱中计算吸收光谱。
Patent CN-1659242-A (CN)
Title: 贮存稳定的可固化组合物
Inventor: ARTUR LACHOWICZ
IPC: C09D4/02
Filed: 2003-06-16
Abstract: 本发明涉及一种可固化组合物，其可以在低温下固化并且同时其在室温下显示良好的贮存稳定性，该可固化组合物包含：(i)一种含有至少两个对于迈克尔加成活泼的不饱和基团的化合物(A)，(ii)一种含有至少两个活泼氢原子的化合物(B)，(iii)一种叔有机膦(C)，和(iv)一种羧酸(D)。