摘要:
N-acyliminodiacetic acids are manufactured by reacting formaldehyde or a formaldehyde generator compound with a N-unsubstituted amide or a generator thereof and with carbon monoxide in contact with a carbonylation catalyst, for example, a cobalt compound, the ratio of the aldehyde groups to the amide groups being at least 2:1. The formaldehyde generator can be a polymeric form of formaldehyde and the amide generator can be a carboxylic ester, acid or anhydride.
摘要:
A N-acyl .alpha.-amino acid is manufactured by reacting an unsaturated vegetable oil or a C.sub.8 -C.sub.30 mono-olefinic compound with an amide, carbon monoxide and hydrogen, in the presence of a cobalt catalyst. The process is operated in one step, providing for an increased selectivity as compared with a two-step process.
摘要:
A nickel catalytic system that makes it possible to obtain branched compounds from fatty substances by reacting simple olefins on polyunsaturated esters, which may or may not be conjugated, is described. The compounds that are obtained may be hydrogenated and used as lubricant bases or may be transformed according to known procedures into compounds of acid, alcohol, amine or amide type, used in varied applications.
摘要:
Highly unsaturated oils of vegetable or animal origin are selectively hydenated to less highly unsaturated oils using a catalytic composition obtained by dissolving a compound of a metal selected from the IB, IV B to VII B or VIII groups in an unsaturated oil and then adding thereto an organic derivative or hydride of a metal from groups I A, II A, II B or III A, in the absence of a stabilizing solvent.
摘要:
Co dimerization is conducted of at least one monoolefin, for example a monoolefinic hydrocarbon such as ethylene, propylene or 1-butene, a halogenated monoolefin such as vinyl chloride, or an olefinic functional compound such as methyl acrylate, acrylonitrile, allyl acetate or vinyl acetate, with at least one polyolefin containing at least two conjugated or unconjugated ethylene bonds, for example a diene hydrocarbon such as 1,3-butadiene, piperylene, or isoprene or a polyolefin containing a carboxylic function, such as a fatty acid or a fatty acid ester having 14 to 24 carbon atoms in the fatty chain derived, for example, from a natural oil. The reaction is carried out in the presence of a catalytic system having general formula [RhX.sub.4 ][YR.sub.4 ] where X represents a halogen ion or a SO.sub.4.sup.--, SO.sub.3.sup.-, OH.sup.-, OR.sup.- or R.sup.- group, at least one X being a halogen ion, Y represents a nitrogen atom or a phosphorous atom, and R represents an alkyl, cycloalkyl, alkenyl, aryl, alkylaryl, polystyryl, alkyl polystyryl or acyl radical.
摘要:
A novel family of chemical compounds derived from fatty compounds has two branches of two carbon atoms on the linear chain and general formula C.sub.21 H.sub.39 COOR where R represents a hydrogen atom, a lower alkyl radical or a glyceryl radical. Particular compounds for consideration have the following formulae:(C.sub.2 H.sub.5).sub.2 C.sub.17 H.sub.29 COOR (I)(C.sub.2 H.sub.5)(C.sub.2 H.sub.4)C.sub.17 H.sub.30 COOR (II)and(C.sub.2 H.sub.5)(C.sub.2 H.sub.3)C.sub.17 H.sub.31 COOR (III)also compounds with the following formulae derived from partial or total hydrogenation of the above:(C.sub.2 H.sub.5).sub.2 C.sub.17 H.sub.31 COOR (IV)(C.sub.2 h.sub.5)(C.sub.2 h.sub.4)C.sub.17 H.sub.32 COOR (V)andti (C.sub.2 H.sub.5).sub.2 C.sub.17 H.sub.33 COOR (VI)Compounds with formulae (I), (II) and (III) may be produced by addition of ethylene to compositions comprising mainly diunsaturated C.sub.18 fatty acids; or to lower alkyl or glyceryl esters of these acids, originating in particular from natural oils, in the presence of a catalytic system containing anionic rhodium of the type [RhX.sub.4 ].sup.- YR'.sub.4 where X is preferably a halide anion; Y is a nitrogen N.sup.+ or phosphorous P.sup.+ atom and R.sup.' is preferably a hydrocarbon group.Compositions in accordance with the invention can be used as base compositions for lubricants or emulsifying agents.
摘要翻译:衍生自脂肪族化合物的化学化合物的新型家族在直链上具有两个碳原子的分支,通式为C 21 H 39 COOR,其中R表示氢原子,低级烷基或甘油基。 考虑的具体化合物具有下式:(C 2 H 5)2 C 17 H 29 COOR(I)(C 2 H 5)(C 2 H 4)C 17 H 30 COOR(II)和(C 2 H 5)(C 2 H 3)C 17 H 31 COOR 上述:( C2H5)2C17H31COOR(Ⅳ)(C2h5)(C2h4)C17H32COOR(Ⅴ)和(C2H5)2C17H33COOR(VI)式(Ⅰ),(Ⅱ)和(Ⅲ)化合物可以通过加入乙烯 主要包含二不饱和C18脂肪酸的组合物; 或者在含有[RhX4] -YR'4类型的阴离子铑的催化体系存在下,将这些酸的烷基或甘油酯特别地衍生自天然油,其中X优选为卤化物阴离子; Y是氮N +或磷P +原子,R'优选为烃基。 根据本发明的组合物可用作润滑剂或乳化剂的基础组合物。
摘要:
Tongs for manipulating shish-kebob on a barbeque grill, the tongs having two arms, the two arms being in parallel relationship at an insulated handle end which includes the pivot point at one end, the arms diverging at the opposing end of the handle end, to form two opposing spaced apart arms having kebob engaging ends, each end having an aperture there through, the apertures engaging the ends of the skewer, the tongs then being compressed so that the kebob engaging ends engage the outer food items on the skewer preventing their rotation so that the kebob may be either flipped for even cooking on the opposing side, or removed from the grill for consumption without endangering the fingers of the user.
摘要:
A method for producing a biomarker indicative of a repetitive head injury in a subject using a magnetic resonance imaging (MRI) system is provided. Two-dimensional spectroscopic data is acquired from a subject using an MRI system. From the two-dimensional spectroscopic data, a two-dimensional spectrum is produced. The two-dimensional spectrum contains spectral information indicated by a first spectral dimension and a second spectral dimension. Such a two-dimensional spectrum may include diagonal peaks and off-diagonal, or cross-peaks. In such an instance, each cross peak may indicate, for example, scalar coupling between the two protons it connects on the diagonal. However, depending on the type of method used, different types of coupling may also be present. Using the two-dimensional spectrum, a biomarker indicative of repetitive head injury in the subject is identified, and may be used to produce a report indicating a status or regression of a neurological dysfunction.
摘要:
A method and system are disclosed for retrieving information through the use of a multi-stage interaction with a client to identify particular knowledge content associated with a knowledge map. The present invention is an application program running on a server accessed via the world-wide web or other data network using standard Internet protocols, a web browser and web server software. In addition to an automated portion, the present invention allows a human dialog designer to model the way the system elicits information, giving a human feel to the dialog and a better customer experience. In operation, users start a dialog by directing their web browser to a designated web page. This web page asks the user some initial questions that are then passed to a dialog engine. The dialog engine then applies its methods and algorithms to a knowledge map, using dialog control information\ and the user's responses to provide feedback to the user. The feedback may include follow-up questions, relevant documents, and instructions to the user (e.g., instructions to contact a human customer service representative). This dialog engine response is rendered as a web page and returned to the user's web browser. The user can then respond further to the follow-up questions he or she is presented, and the cycle repeats. The invention can be implemented so that it can interact with customers through a wide variety of communication channels including the Internet, wireless devices (e.g., telephone, pager, etc.), handheld devices such as a Personal Data Assistant (PDA), email, and via a telephone where the automated system is delivered using an interactive voice response (IVR) and/or speech-recognition system.
摘要:
The invention is based on the discovery of methods for purification of an acid active hyaluronidase found in human plasma (hpHAse), including both biochemical and immunoaffinity purification methods. The method of immunoaffinity purification of the invention is based on the discovery of a method for identifying antibodies that specifically bind native hpHAse (anti-native hpHAse antibodies), and anti-native hpHAse antibodies identified by this screening method. The invention also features an assay for sensitive detection of HAse activity using biotinylated hyaluronic acid (bHA). Purification and characterization of hpHAse lead to the inventors' additional discovery that hpHAse is encoded by the LuCa-1 gene, which gene is present in the human chromosome at 3p21.3, a region associated with tumor suppression. The invention additionally features methods of treating tumor-bearing patients by administration of hpHAse and/or transformation of cells with hpHAse-encoding DNA.