摘要:
A nanoparticle labeling which is simultaneously usable in the combination of X-ray imaging with optical imaging and the combination of X-ray imaging and optical imaging with magnetic resonance imaging characterized by comprising core/shell type semiconductor nanoparticles having an average shell thickness of 0.1 nm or more but not more than 10.0 nm together with an X-ray sensitive material for the former combination, and core/shell type semiconductor nanoparticles having an average shell thickness of 0.1 nm or more but not more than 10.0 nm together with an X-ray sensitive material and magnetic particles for the latter combination.
摘要:
To provide core-shell particles having a dense shell, and a method whereby the core-shell particles can be produced in a short period of time.Core particles wherein the shell has a thickness of from 1 to 500 nm and has 0.01 cc/g as the maximum pore volume value of pores having diameters of at most 3 nm in a pore volume histogram obtained by nitrogen adsorption, and an average particle size in a dispersion medium is from 1 to 1,000 nm; is obtained by irradiating a liquid containing core particles made of a material having a dielectric constant of at least 10 and a metal oxide precursor with a microwave to form a shell made of a metal oxide on the surface of the core particles.
摘要:
A microparticle can include a central region and a peripheral region. The peripheral region can include a nanoparticle, such as a metal nanoparticle, a metal oxide nanoparticle, or a semiconductor nanocrystal. The microparticle can be a member of a monodisperse population of particles.
摘要:
In a particular embodiment, a particulate material includes alumina hydrate. The particulate material has a 500 psi Compaction Volume Ratio of at least about 4.0 cc/cc.
摘要:
To provide resin-coated sand for a multilayer mold in which the consolidation strength of the casting mold obtained by using it and gas permeability thereof are improved at the same time, the amount of occurrence of pyrolytic products (tar, soot and the like) derived from organic substances is effectively inhibited, when molding is performed using such a casting mold, and further, the casting mold after molding can exhibit excellent collapsibility. Disclosed is resin-coated sand for a multilayer mold, in which surfaces of refractory particles are coated with a binder composition containing a phenolic novolak resin having an ortho/para bond ratio of methylene groups of 1.5 or more and an aromatic amine as indispensable constituents, and the grain fineness number is from 80 to 150.
摘要:
The disclosure relates to acid-based polymeric dispersants containing 2-[2-(2-methoxyethoxy)ethoxy]acetic acid for dispersing metal oxide nanoparticles in organic solvents such as methyl ethyl ketone (MEK) and butyl acetate.
摘要:
An abrasive agglomerate includes a plurality of abrasive grains bonded together in a three-dimensional structure by a substantially continuous, non-porous inorganic binder, wherein the abrasive grains have an average size of between about 0.5 microns and about 1500 microns, the inorganic binder is less than about 75 percent, by weight, of the abrasive agglomerate, and the bulk density of the abrasive agglomerate is less than about 90 percent of the bulk density of the abrasive grains.
摘要:
To provide a process for producing a surface modified lithium-containing composite oxide, which is excellent in discharge capacity, volume capacity density, safety, durability for charge and discharge cycles and an excellent rate property, at a low production cost. The present invention is characterized in that a process for producing a surface modified lithium-containing composite oxide, wherein a lithium titanium composite oxide is contained in the surface layer of particles of a lithium-containing composite oxide represented by the formula: LipNxMyOzFa, where N is at least one element selected from the group consisting of Co, Mn and Ni, M is at least one element selected from the group consisting of Al, Sn, alkaline earth metal elements and transition metal elements other than Co, Mn and Ni, 0.9≦p≦1.3, 0.9≦x≦2.0, 0≦y≦0.1, 1.9≦z≦4.2, and 0≦a≦0.05, which comprises impregnating a solution having a lithium source and a titanium source dissolved therein, followed by heat treatment at a determined temperature, to obtain the surface modified lithium-containing composite oxide, wherein the titanium contained in the surface layer is from 0.01 to 1.95 mol %.
摘要:
Disclosed herein are core-shell type nanoparticles comprising nanoparticle cores made of a metal or semiconductor, and shells made of crystalline metal oxide formed on the surfaces of the nanoparticle cores, as well as a preparation method thereof. According to the disclosed invention, the core-shell nanoparticles, consisting of metallic or semiconductor cores and crystalline metal oxide shells, can be prepared by epitaxially growing metal oxide on the surfaces of the metallic or semiconductor nanoparticle cores. By virtue of the crystalline metal oxide shells, the core nanoparticle made of metal or semiconductor can ensure excellent chemical and mechanical stability, and the core-shell nanoparticles can show new properties resulting from the interaction between the metal cores and the metal oxide crystal shells.