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公开(公告)号：US5702683A
公开(公告)日：1997-12-30
申请号：US643092
申请日：1991-01-22
CPC分类号： A61K49/06 , Y10T436/24
摘要： A family of contrast agents for use in magnetic resonance imaging and a method of enhancing the contrast of magnetic resonance images of an object by incorporating a contrast agent of this invention into the object prior to forming the images or during formation of the images. A contrast agent of this invention is a paramagnetic lanthanide hexaazamacrocyclic molecule, where a basic example has the formula LnC.sub.16 H.sub.14 N.sub.6. Important applications of the invention are in medical diagnosis, treatment, and research, where images of portions of a human body are formed by means of magnetic resonance techniques.
摘要翻译： 用于磁共振成像的一系列造影剂和通过在形成图像之前或在形成图像期间将本发明的造影剂并入物体中来增强对象的磁共振图像的对比度的方法。 本发明的造影剂是顺磁镧系元素六氮杂大环分子，其中基本实例具有式LnC16H14N6。 本发明的重要应用是医疗诊断，治疗和研究，其中通过磁共振技术形成人体部分的图像。
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公开(公告)号：US5409678A
公开(公告)日：1995-04-25
申请号：US31053
申请日：1993-03-11
CPC分类号： C01G56/001 , C22B3/0036 , C22B3/0041 , Y02P10/234
摘要： An organic extracting solution comprised of a bis(acylpyrazolone or a substituted bis(acylpyrazolone) and an extraction method useful for separating certain elements of the actinide series of the periodic table having a valence of four from one other, and also from one or more of the substances in a group consisting of hexavalent actinides, trivalent actinides, trivalent lanthanides, trivalent iron, trivalent aluminum, divalent metals, and monovalent metals and also from one or more of the substances in a group consisting of hexavalent actinides, trivalent actinides, trivalent lanthanides, trivalent iron, trivalent aluminum, divalent metals, and monovalent metals and also useful for separating hexavalent actinides from one or more of the substances in a group consisting of trivalent actinides, trivalent lanthanides, trivalent iron, trivalent aluminum, divalent metals, and monovalent metals.
摘要翻译： 一种由双（酰基吡唑啉酮或取代的二（酰基吡唑啉酮）组成的有机萃取溶液和一种萃取方法，该萃取方法可用于从周期表中分离出四价四价锕系元素的某些元素， 由六价锕系元素，三价锕系元素，三价镧系元素，三价铁，三价铝，二价金属和一价金属组成的组中的物质，以及由六价锕系元素，三价锕系元素，三价镧系元素组成的组中的一种或多种物质 ，三价铁，三价铝，二价金属和一价金属，也可用于从三价锕系元素，三价镧系元素，三价铁，三价铝，二价金属和一价金属中的一种或多种物质中分离六价锕系元素 。
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公开(公告)号：US4867951A
公开(公告)日：1989-09-19
申请号：US176131
申请日：1988-03-31
CPC分类号： C01F17/0006 , C22B3/0095 , Y02P10/234
摘要： An organic extracting solution and an extraction method useful for separating elements of the actinide series of the periodic table from elements of the lanthanide series, where both are in trivalent form. The extracting solution consists of a primary ligand and a secondary ligand, preferably in an organic solvent. The primary ligand is a substituted monothio-1,3-dicarbonyl, which includes a substituted 4-acyl-2-pyrazolin-5-thione, such as 4-benzoyl-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-thione (BMPPT). The secondary ligand is a substituted phosphine oxide, such as trioctylphosphine oxide (TOPO).
摘要翻译： 一种有机萃取溶液和一种萃取方法，可用于将元素周期表的锕系元素的元素分离为镧系元素，其中两者均为三价形式。 提取溶液由主配体和次配体组成，优选在有机溶剂中。 主配体是取代的一硫代-1,3-二羰基，其包括取代的4-酰基-2-吡唑啉-5-硫酮，例如4-苯甲酰基-2,4-二氢-5-甲基-2-苯基 - 3H-吡唑-3-硫酮（BMPPT）。 二次配体是取代的氧化膦，例如三辛基氧化膦（TOPO）。
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4.发明授权公开(公告)号：US07521007B1
公开(公告)日：2009-04-21
申请号：US10956506
申请日：2004-10-04
摘要： Microstructured nuclear fuel adapted for nuclear power system use includes fissile material structures of micrometer-scale dimension dispersed in a matrix material. In one method of production, fissile material particles are processed in a chemical vapor deposition (CVD) fluidized-bed reactor including a gas inlet for providing controlled gas flow into a particle coating chamber, a lower bed hot zone region to contain powder, and an upper bed region to enable powder expansion. At least one pneumatic or electric vibrator is operationally coupled to the particle coating chamber for causing vibration of the particle coater to promote uniform powder coating within the particle coater during fuel processing. An exhaust associated with the particle coating chamber and can provide a port for placement and removal of particles and powder. During use of the fuel in a nuclear power reactor, fission products escape from the fissile material structures and come to rest in the matrix material. After a period of use in a nuclear power reactor and subsequent cooling, separation of the fissile material from the matrix containing the embedded fission products will provide an efficient partitioning of the bulk of the fissile material from the fission products. The fissile material can be reused by incorporating it into new microstructured fuel. The fission products and matrix material can be incorporated into a waste form for disposal or processed to separate valuable components from the fission products mixture.
摘要翻译： 适用于核电系统使用的微结构核燃料包括分散在基体材料中的微米级尺寸的裂变材料结构。 在一种生产方法中，在化学气相沉积（CVD）流化床反应器中处理裂变材料颗粒，该反应器包括用于提供受控气体流入颗粒涂层室的气体入口，含有粉末的下床热区域， 上床区域使粉末膨胀。 至少一个气动或电动振动器可操作地耦合到颗粒涂层室，以引起颗粒涂层机的振动，以在燃料加工期间促进粒子涂布机内均匀的粉末涂覆。 与颗粒涂层室相关的废气可以提供用于放置和去除颗粒和粉末的端口。 在核能反应堆中使用燃料时，裂变产物从易裂变材料结构中逃逸，并停留在基体材料中。 在核动力反应堆使用一段时间后，随后的冷却，将裂变材料从含有嵌入裂变产物的基体中分离出来，将能够从裂变产物中大量分解裂变材料。 裂变材料可以通过将其并入新的微结构燃料中来重新使用。 裂变产物和基质材料可以并入废物形式，用于处理或加工以将有价值的成分与裂变产物混合物分离。
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公开(公告)号：US5670550A
公开(公告)日：1997-09-23
申请号：US476964
申请日：1995-06-07
IPC分类号： B01J41/04 , B01J41/14 , C02F1/42 , C08F8/30 , C08F8/32 , C08F8/44 , C08F26/06 , C08F226/06 , C08F226/08 , B01J41/06 , C08F8/40
CPC分类号： C08F226/06 , B01J41/04 , B01J41/14 , C02F1/42 , C08F8/44
摘要： Anion exchange resins including at least two positively charged sites and aell-defined spacing between the positive sites are provided together with a process of removing anions or anionic metal complexes from aqueous solutions by use of such resins. The resins can be substituted poly(vinylpyridine) and substituted polystyrene.
摘要翻译： 提供包含至少两个带正电点的阴离子交换树脂和阳性位点之间明确界定的间隔，以及通过使用这种树脂从水溶液中除去阴离子或阴离子金属络合物的方法。 树脂可以是取代的聚（乙烯基吡啶）和取代的聚苯乙烯。
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公开(公告)号：US20150337412A1
公开(公告)日：2015-11-26
申请号：US14714729
申请日：2015-05-18
CPC分类号： C22B60/0295 , C22B7/007 , Y02P10/234
摘要： A process is for oxidizing americium(III) to americium(VI) includes providing a aqueous acidic composition comprising americium(III) and a mineral acid and exposing the composition to ozone and silver ion under conditions suitable for oxidation of the americium(III) to americium(VI). Nitric, acid is a suitable mineral acid for the process. Extraction of the americium from the silver is possible using organic phosphonate extractant.
摘要翻译： 一种将矾（III）氧化成ium（VI）的方法包括提供包含ium（III）和无机酸的水性酸性组合物，并将该组合物暴露于适于氧化ium（III）的条件下的臭氧和银离子 ium（Ⅵ）。 硝酸，酸是一种合适的无机酸。 使用有机膦酸盐提取剂可以从银中提取。。
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公开(公告)号：US4923630A
公开(公告)日：1990-05-08
申请号：US331775
申请日：1989-04-03
CPC分类号： C22B3/0095 , C01F17/0006 , Y02P10/234
摘要： An organic extracting solution useful for separating elements of the actinide series of the periodic table from elements of the lanthanide series, where both are in trivalent form. The extracting solution consists of a primary ligand and a secondary ligand, preferably in an organic solvent. The primary ligand is a substituted monothio-1,3-dicarbonyl, which includes a substituted 4-acyl-2-pyrazolin-5-thione, such as 4-benzoyl-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-thione (BMPPT). The secondary ligand is a substituted phosphine oxide, such as trioctylphosphine oxide (TOPO).
摘要翻译： 一种有机萃取溶液，可用于从镧系元素的元素中分离元素周期表的元素，其中两者均为三价形式。 提取溶液由主配体和次配体组成，优选在有机溶剂中。 主要配体是取代的一硫代-1,3-二羰基，其包括取代的4-酰基-2-吡唑啉-5-硫酮，例如4-苯甲酰基-2,4-二氢-5-甲基-2-苯基 - 3H-吡唑-3-硫酮（BMPPT）。 二次配体是取代的氧化膦，例如三辛基氧化膦（TOPO）。
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公开(公告)号：US20100301288A1
公开(公告)日：2010-12-02
申请号：US12476015
申请日：2009-06-01
IPC分类号： C09K11/04
摘要： A composition is prepared by heating particles of a nuclear fuel material in a metal salt that decomposes below 1000° C. to form a metal oxide. Magnesium nitrate hexahydrate is an example of such a metal salt. A resulting composition includes the particles homogeneously dispersed in a matrix of magnesium oxide. After the composition is used in a nuclear reactor, the now spent composition is removed, cooled, and the matrix is dissolved away from the spent particles, which can be reused in another nuclear fuel composition. The recovered fuel particles also contain some fission products that provide a radiation barrier that discourages theft of the recovered fuel particles.
摘要翻译： 通过将核燃料材料的颗粒加热到分解在1000℃以下的金属盐中以形成金属氧化物来制备组合物。 硝酸镁六水合物是这种金属盐的一个例子。 所得组合物包括均匀分散在氧化镁基质中的颗粒。 在将组合物用于核反应堆中之后，将现在使用的组合物除去，冷却，并将基质溶解于废颗粒中，废粉可以再次用于另一种核燃料组合物。 回收的燃料颗粒还含有一些裂变产物，其提供阻止回收的燃料颗粒被盗窃的辐射屏障。
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