757 results about "Lutetium" patented technology

A single crystal having the general composition, Ce2x(Lu1-yYy)2(1-x)SiO5 where x=approximately 0.00001 to approximately 0.05 and y=approximately 0.0001 to approximately 0.9999; preferably where x ranges from approximately 0.0001 to approximately 0.001 and y ranges from approximately 0.3 to approximately 0.8. The crystal is useful as a scintillation detector responsive to gamma ray or similar high energy radiation. The crystal as scintillation detector has wide application for the use in the fields of physics, chemistry, medicine, geology and cosmology because of its enhanced scintillation response to gamma rays, x-rays, cosmic rays and similar high energy particle radiation.

A coating applied as a two layer system. The outer layer is an oxide of a group IV metal selected from the group consisting of zirconium oxide, hafnium oxide and combinations thereof, which are doped with an effective amount of a lanthanum series oxide. These metal oxides doped with a lanthanum series addition comprises a high weight percentage of the outer coating. As used herein, lanthanum series means an element selected from the group consisting of lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu) and combinations thereof, and lanthanum series oxides are oxides of these elements. When the zirconium oxide is doped with an effective amount of a lanthanum series oxide, a dense reaction layer is formed at the interface of the outer layer of TBC and the CMAS. This dense reaction layer prevents CMAS infiltration below it. The second layer, or inner layer underlying the outer layer, comprises a layer of partially stabilized zirconium oxide.

The invention provides a high performance lithium ion battery anode material lithium manganate and a preparation method of the material. The lithium manganate is a doped lithium manganate LiMn2-yXy04 which is doped with one kind or a plurality of other metal elements X, wherein X element is at least one kind selected form the group of aluminium, lithium, fluorine, silver, copper, chromium, zinc, titanium, bismuth, germanium, gallium, zirconium, stannum, silicon, cobalt, nickel, vanadium, magnesium, calcium, strontium, barium and rare earth elements lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium, and y is larger than 0 but less than or equal to 0.11. The lithium ion battery anode material lithium manganate provided in the invention has extraordinary charge and discharge cycle performance both in the environments of normal temperature and high temperature. According to the invention, the preparation method of the material is a solid phase method, the operation is simple and controllable and the cost is low so that it is easy to realize large-scale productions.

Inventions relate to scintillation substances and they may be utilized in nuclear physics, medicine and oil industry for recording and measurements of X-ray, gamma-ray and alpha-ray, nondestructive testing of solid states structure, three-dimensional positron-emission tomography and X-ray computer tomography and fluorography. Substances based on silicate comprising lutetium and cerium characterised in that compositions of substances are represented by chemical formulae CexLu2+2y−xSi1−yO5+y, CexLiq+pLu2−p+2y−x−zAzSi1−yO5+y−p, CexLiq+pLu9.33−x−p−z□0.67AzSi6O26−p, where A is at least one element selected from group consisting of Gd, Sc, Y, La, Eu, Tb, x is value between 1×10−4 f.units and 0.02 f.units., y is value between 0.024 f.units and 0.09 f.units, z is value does not exceeding 0.05 f.units, q is value does not exceeding 0.2 f.units, p is value does not exceeding 0.05 f.units. Achievable technical result is the scintillating substance having high density, high light yield, low afterglow, and low percentage loss during fabrication of scintillating elements.

An LED apparatus is disclosed. The LED apparatus includes a substrate, a cup structure, and a dividing structure. The dividing structure divides a containing space formed by the cup structure into a first region and a second region. A first blue-light chip and a first package colloidal are disposed in the first region and a second blue-light chip and a second package colloidal are disposed in the second region. A green-light phosphor is mixed in the second package colloidal to completely convert a monochromatic emission spectrum of a second blue-light band of the second blue-light chip into a monochromatic emission spectrum of a green-light band. The green-light phosphor is selected from one of silicate, oxynitride, lutetium aluminum oxide, and calcium scandium oxide.

A ceramic bonding composition comprises a first oxide and at least a second oxide having a formula of Me2O3; wherein the first oxide is selected from the group consisting of aluminum oxide, scandium oxide, and combinations thereof; Me is selected from the group consisting of yttrium, lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, and combinations thereof. The ceramic bonding composition can further comprise silica. An article of manufacture comprising at least two members attached together with the ceramic bonding composition.

The present invention concerns very fast scintillator materials comprising lutetium iodide doped with Cerium (Lu1-xI3:Cex; LuI3:Ce). The LuI3 scintillator material has surprisingly good characteristics including high light output, high gamma ray stopping efficiency, fast response, low cost, good proportionality, and minimal afterglow that the material is useful for gamma ray spectroscopy, medical imaging, nuclear and high energy physics research, diffraction, non-destructive testing, nuclear treaty verification and safeguards, and geological exploration. The timing resolution of the scintillators of the present invention provide compositions capable of resolving the position of an annihilation event within a portion of a human body cross-section.

The invention discloses a rare earth aluminum alloy, and a method and a device for preparing the same. The alloy contains at least one rare earth metal of lanthanum, cerium, praseodymium, neodymium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, lutetium, scandium and yttrium, the content of raw earth is 5 to 98 weight percent, and the balance is aluminum and inevitable impurities. The device for preparing the rare earth aluminum alloy is characterized in that: a) graphite serves as an electrolysis bath, a graphite plate is an anode, a tungsten bar is a cathode and a molybdenum crucible serves as a rare earth aluminum alloy receiver; b) the diameter of the tungsten bar is 30 to 55 mm; and c) the anode of the graphite consists of a plurality of graphite plates. The rare earth aluminum alloy, and the method and the device for preparing the same have the advantages that: the alloy has uniform components, little segregation and low impurity content; technology for preparing the rare earth aluminum alloy through fusion electrolysis can maximally replace a process for preparing single medium-heavy metal through metallothermic reduction, greatly reduce energy consumption and the emission of fluorine-containing tail gas and solid waste residue, improve current efficiency and metal yield and reduce the consumption of auxiliary materials and the energy consumption; and the rare earth aluminum alloys with different rare earth contents can be obtained by controlling different electrolytic temperatures and different cathode current densities.

Methods for making barrier coatings including a taggant involving providing a barrier coating, and adding from about 0.01 mol % to about 30 mol % of a taggant to the barrier coating wherein the taggant comprises a rare earth element selected from lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, ytterbium, and lutetium, salts thereof, silicates thereof, oxides thereof, zirconates thereof, hafnates thereof, titanates thereof, tantalates thereof, cerates thereof, aluminates thereof, aluminosilicates thereof, phophates thereof, niobates thereof, borates thereof, and combinations thereof.

A method is disclosed for coating substantially pure boron or highly boron-rich borides in a controlled manner. Such a method of coating of boron has a variety of applications, including surface chemical and wear protection, neutron absorption, prevention of impurity emission from heated filaments and ion beams, elimination of metal dust from vacuum systems, boridizing, boron cluster emission, and reactive chemistry. Borides with a boron-to-metal ratio of 20 or more are known to exist and may be used as a feedstock for substantially pure boron coatings for deposition processes requiring feedstock electrical conductivity, and / or enhanced reactivity. While most metal borides coincidentally produce significant metal vapor as a by-product, certain borides of yttrium, holmium, erbium, thulium, terbium, gadolinium, and lutetium have been identified as capable of producing substantially pure boron vapor.

A turbine engine component is provided which has a substrate and a thermal barrier coating applied over the substrate. The thermal barrier coating comprises alternating layers of yttria-stabilized zirconia and a molten silicate resistant material. The molten silicate resistant outer layer may be formed from at least one oxide of a material selected from the group consisting of lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, indium, zirconium, hafnium, and titanium or may be formed from a gadolinia-stabilized zirconia. If desired, a metallic bond coat may be present between the substrate and the thermal barrier coating system. A method for forming the thermal barrier coating system of the present invention is described.

An LED apparatus and a field sequential display employing same are disclosed. The LED apparatus includes a substrate, a cup structure, and a dividing structure. The dividing structure divides a containing space formed by the cup structure into a first region and a second region. A first blue-light chip and a first package colloidal are disposed in the first region and a second blue-light chip anda second package colloidal are disposed in the second region. A green-light phosphor is mixed in the second package colloidal to completely convert a monochromatic emission spectrum of a second blue-light band of the second blue-light chip into a monochromatic emission spectrum of a green-light band. The green-light phosphor is selected from one of silicate, oxynitride, lutetium aluminum oxide, and calcium scandium oxide. Characteristic difference among chips of different colors of an LED apparatus can be minimized, thereby improving the entire efficiency.

The invention discloses a lutetium-aluminum carbuncle basic transparent ceramic and preparing method in the crystalline ceramics domain, which is characterized by the following: the crystalline ceramic is made up with Lu3-xRExAl5O12, wherein 0 C04B 35 / 44 C04B 35 / 622 2 5 2 2006 / 4 / 7 1837142 2006 / 9 / 27 100455536 2009 / 1 / 28 2009 / 1 / 28 2009 / 1 / 28 Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 Liu Xuejian Li Huili Huang Liping pan zhen 31002 Shanghai Patent Agency of the Chinese Academy of Sciences No.319 Yueyang Road, Shanghai 200031

Scintillator compositions having a garnet crystal structure useful for the detection of high-energy radiation, such as X, beta, and gamma radiation, contain (1) at least one of terbium and lutetium; (2) at least one rare earth metal; and (3) at least one of Al, Ga, and In. Terbium or lutetium may be partially substituted with Y, La, Gd, and Yb. In particular, the scintillator composition contains both terbium and lutetium. The scintillators are characterized by high light output, reduced afterglow, short decay time, and high X-ray stopping power.

This invention encompasses the oxides of lutetium and silicon in various proportions and containing a dopant, optionally cerium, fabricated in the form of a translucent ceramic, and methods of manufacture and use of such ceramic.

Rare earth compositions comprising nanoparticles, methods of making nanoparticles, and methods of using nanoparticles are described. The compositions of the nanomaterials discussed may include scandium (Sc), yttrium (Y), lanthanum(La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium(Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), and lutetium (Lu). The nanoparticles can be used to make organometallics, nitrates, and hydroxides. The nanoparticles can be used in a variety of applications, such as pigments, catalysts, polishing agents, coatings, electroceramics, catalysts, optics, phosphors, and detectors.

A scintillator composition comprising a garnet represented by (M1-x-yNxAy)3(Al5-a-bCaDb)O12, where M comprises yttrium, or terbium, or gadolinium, or holmium, or erbium, or thulium, or ytterbium, or lutetium, or combinations thereof, where N comprises additives including a lanthanide, or an alkali metal, or an alkaline earth metal, or combinations thereof, where A comprises a suitable activator ion including cerium, or europium, or praseodymium, or terbium, or ytterbium, or combinations thereof, where C or D comprises lithium, or magnesium, or gallium, or an element from group IIIa, or IVa, or Va, or IIId transition metal, or IVd transition metal, or combinations thereof, where x ranges from about 0 to about 0.90, y ranges from about 0.0005 to about 0.30, and a sum of a and b ranges from about 0 to 2.0.

The present invention provides a catalyst carrier having excellent durability and capable of attaining high catalytic ability without increasing the specific surface area thereof, and a catalyst obtainable by using the catalyst carrier. The catalyst carrier of the present invention comprises a metal oxycarbonitride, preferably the metal contained in the metal oxycarbonitride comprises at least one selected from the group consisting of niobium, tin, indium, platinum, tantalum, zirconium, copper, iron, tungsten, chromium, molybdenum, hafnium, titanium, vanadium, cobalt, manganese, cerium, mercury, plutonium, gold, silver, iridium, palladium, yttrium, ruthenium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, and nickel. Moreover, the catalyst of the present invention comprises the catalyst carrier and a catalyst metal supported on the catalyst carrier.

The present invention concerns very fast scintillator materials comprising lutetium iodide doped with Cerium (Lu1-xI3:Cex; LuI3:Ce). The LuI3 scintillator material has surprisingly good characteristics including high light output, high gamma-ray stopping efficiency, fast response, low cost, good proportionality, and minimal afterglow that the material is useful for gamma-ray spectroscopy, medical imaging, nuclear and high energy physics research, diffraction, non-destructive testing, nuclear treaty verification and safeguards, and geological exploration. The timing resolution of the scintillators of the present invention provide compositions capable of resolving the position of an annihilation event within a portion of a human body cross-section.

A niobium powder comprising at least one element selected from the group consisting of chromium, molybdenum, tungsten, boron, aluminum, gallium, indium, thallium, cerium, neodymium, titanium, rhenium, ruthenium, rhodium, palladium, silver, zinc, silicon, germanium, tin, phosphorus, arsenic, bismuth, rubidium, cesium, magnesium, strontium, barium, scandium, yttrium, lanthanum, praseodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, hafnium, vanadium, osmium, iridium, platinum, gold, cadmium, mercury, lead, selenium and tellurium; a sintered body of the niobium powder; and a capacitor comprising a sintered body as one electrode, a dielectric material formed on the surface of the sintered body, and counter electrode provided on the dielectric material.

A high-strength high-modulus magnesium alloy comprises 3-20% of alloying element and the balance of magnesium substrate, wherein the alloying element comprises heavy rare earth, silicon and / or germanium, and tin and / or antimony and / or zinc; Si and Ge as well as Sn, Sb and Zn can be simultaneously added and can also be added individually; and the heavy rare earth is selected from at least one of gadolinium, dysprosium, terbium, holmium erbium, thulium, ytterbium and lutetium. The preparation method comprises the steps of: heating and melting pure magnesium in protective atmosphere, adding pure silicon to the pure magnesium melt, stirring, dissolving, heating-up to 20-30 DEG C, sequentially adding an interalloy of the other components, stirring, controlling the interalloy to be completely molten until the casting time is less than or equal to 4min, and casting to obtain a cast ingot. The high-strength high-modulus magnesium alloy is reasonable in component proportioning, and easy to process and manufacture; and the prepared high-strength high-modulus magnesium alloy has high room-temperature strength and elasticity modulus and better plasticity, and comprehensive performances apparently higher than those of the existing magnesium-rare earth, and is suitable for industrial production.

An illumination system, comprising a radiation source and a monolithic ceramic luminescence converter comprising at least one phosphor capable of absorbing a part of light emitted by the radiation source and emitting light of wavelength different from that of the absorbed light; wherein said at least one phosphor is an europium(III)-activated rare earth metal sesquioxide of general formula (YY-x-XEx)2-z(EU1-a-3Aa)z, wherein RE is selected from the group of gadolinium, scandium, and lutetium, A is selected from the group of bismuth, antimony, dysprosium, samarium, thulium, and erbium, 0≦x<1, 0.001≦z≦0.2; and 0≦a<1 can provide light sources having high luminosity and color-rendering index, especially in conjunction with a light emitting diode as a radiation source. The invention is also concerned with an amber to red-emitting a monolithic ceramic luminescence converter comprising an europium(III)-activated rare earth metal sesquioxide of general formula (Y1-x-REx)2-zO3:(Eu1-aAa)Z, wherein RE is selected from the group of gadolinium, scandium, and lutetium, A is selected from the group of dysprosium, samarium, thulium, and erbium, 0≦x<1, 0.001≦z≦; and 0≦a<1.

A dendrimer conjugate according to Formula (I), or its pharmaceutically acceptable salt, or solvate thereof: and complexes of Formula I conjugates with metals radionuclides of elements such as rhenium, technetium, yttrium, lutetium and others to provide a complex for imaging tissues or for the radiotherapeutic treatment of cancer tissue. Such complexes are specific to PSMA protein and can therefore be used in imaging or treating cancer of the prostate and other tissue where the protein is expressed.

Lutetium gadolinium halide scintillators, devices and methods, including a composition having the formula LuxGd(1-x)Halide and a dopant.

Systems and methods for stabilizing the gain of a gamma-ray spectroscopy system are provided. In accordance with one embodiment, a method of stabilizing the gain of a gamma-ray spectroscopy system may include generating light corresponding to gamma-rays detected from a geological formation using a scintillator having a natural radioactivity, generating an electrical signal corresponding to the light, and stabilizing the gain of the electrical signal based on the natural radioactivity of the scintillator. The scintillator may contain, for example, naturally radioactive elements such as Lutetium or Lanthanum.

The invention relates to a preparation method for purifying heavy rare earth, in particular to a preparation method for separating and purifying the heavy rare earth by using a full-extraction process. The technical scheme adopted by the invention comprises the steps of adopting thulium, ytterbium and lutetium concentrate as a raw material, and carrying out non-rare earth impurity purification by using N235 and then carrying out full-extraction separation and purification by using a double extracting agent system of P507 and C272 so as to respectively obtain high-purity single rare earth products of Tm2O3, Yb2O3 and Lu2O3. Compared with the prior art, the preparation method for separating and purifying the heavy rare earth by using the full-extraction process, provided by the invention, has the following advantages of: strong adaptability to raw material distribution variation of the input and output process parameters specified by the full-extraction separating and purifying process compared with the input and output process parameters in the production of a traditional ion exchanging method, an extraction chromatographic method or a single P507 extraction method have the advantages of, low balancing acid value, less acid and alkali raw material consumption, continuous production, large capacity, low comprehensive production cost, high product purity, stable quality and the like.

The present invention provides a secured document including a composition capable of anti-Stokes fluorescence containing an ion capable of absorption of electromagnetic radiation, an ion capable of emitting electromagnetic radiation, and a matrix composition comprising gadolinium, yttrium, lanthanum, and lutetium, wherein the wavelength of the emitted electromagnetic radiation is shorter than the wavelength of the absorbed electromagnetic radiation, and wherein the concentrations of the absorbing and emitting ions are adjusted to achieve concentration quenching of anti-Stokes luminescence.