Abstract:
An article for presenting dye/pigment images therein comprising a substantially transparent viewing region (20); photodeveloped, printed, deposited or diffused dyes and/or pigments (21) in the viewing region; and a substrate region (22) adjacent to the viewing region. The outer surface (23) of the viewing region is configured in a relief pattern comprising microscopic, smooth, sharp pyramids (31), cones (48), or ridges (29), to provide a series of at least 3 surface reflections of any light impinging thereon, before the light travels toward the viewer's eyes. The reflectivity at any one surface reflection is less than about 5 % of normal incident light, so less than about 0.05 % (and preferably not more than 0.02 %) of such incident light is returned toward the viewer after 3 reflections, and less after (4). A viewer thus can see the dye/pigment images clearly from any direction and free from noticeable reflected light from the outer surface, and without loss of detail or contrast in dark areas.
Abstract:
The present invention is directed to a process for producing a nanometer-sized metal compound. The process comprises forming a reverse micelle or reverse microemulsion system comprising a polar fluid in a non-polar or low-polarity fluid. A first reactant comprising a multi-component, water-soluble metal compound is introduced into the polar fluid in a non-polar or low-polarity fluid. This first reactant can be introduced into the reverse micelle or reverse microemulsion system during formation thereof or subsequent to the formation of the reverse micelle or microemulsion system. The multi-component, water-soluble metal compound is then reacted in the reverse micelle or reverse microemulsion system to form the nanometer-sized metal compound. The nanometer-sized metal compound is then precipitated from the reverse micelle or reverse microemulsion system.
Abstract:
The present invention describes conjugates of growth factors and alpha-emitting radionuclides which are suitable for detecting and treating cancer. Also provided are methods for treating cancer utilizing conjugates of growth factors and non-radioactive iodine, conjugates of growth factors and an oxyanion of a metal, and conjugates of a growth factor and a radioactive isotope.
Abstract:
Stress-induced deformation, and the damage resulting therefrom, increases with film thickness. The overcoming of excessive stress by the use of the Si-Al-N film material of the present invention, permits the formation of thick films that are necessary for certain of the above described applications. The most likely use for the subject film materials, other than their specialized views as an optical film, is for microelectronic packaging of components on silicon substrates. In general, the subject films have excellent adherence to the underlying substrate, a high degree of hardness and durability, and are excellent insulators. Prior art elevated temperature deposition processes cannot meet the microelectronic packaging temperature formation constraints. The process of the present invention is conducted under non-elevated temperature conditions, typically 500 DEG C or less.
Abstract:
Atoms in a neodymium:glass rod (20) are excited to a substantially spatially uniform metastable state by flashlamps (21). A flowing fluid (26) cools the flashlamps, but not the rod; so that low temperature gradients are maintained in the rod during isothermal laser operation. Automatic control means (22) turn off the electrical power supply (24) when the temperature in the rod reaches a predetermined limit. A flowing fluid (23) then cools the rod, at a rate low enough to avoid thermal stress therein, while it is not lasing. Segments of reflectors (25) focus the pump photons in the rod so as to substantially balance the cylindrical lensing action of the rod against the radial attenuation through it, and thus to provide substantially uniform density of stored energy in the rod.
Abstract:
The amount of ionizing radiation to which a thermoluminescent material (40) has been exposed is determined by first cooling (70) the thermoluminescent material and then optically stimulating the thermoluminescent material and then optically stimulating the thermoluminescent material by exposure (72) to light. Visible light emitted by the thermoluminescent material as it is allowed to warm up to room temperature is detected and counted (74). The thermoluminescent material may be annealed (76) by exposure to ultraviolet light.
Abstract:
A method is disclosed for denitrification of compounds containing nitrogen present in aqueous waste streams. The method comprises the steps of (1) identifying the types of nitrogen compounds present in a waste stream, (2) determining the concentrations of nitrogen compounds, (3) balancing oxidized and reduced form of nitrogen by adding a reactant, and (4) heating the mixture to a predetermined reaction temperature from about 300 °C to about 600 °C, thereby resulting in less harmful nitrogen and oxygen gas, hydroxides, alcohols, and hydrocarbons.
Abstract:
A dual-wall pressure balanced vessel for processing high viscosity slurries at high temperatures and pressures having an outer pressure vessel (100) and an inner vessel (101) with the annular space (102) between the vessels pressurized at a pressure slightly less than or equivalent to the pressure within the inner vessel.
Abstract:
In one aspect of the invention, an air electrode material for a solid oxide fuel cell comprises Y1-aQaMnO3, where 'Q' is selected from the group consisting of Ca and Sr or mixtures thereof and 'a' is from 0.1 to 0.8. Preferably, 'a' is from 0.4 to 0.7. In another aspect of the invention, an electrical interconnection material for a solid oxide fuel cell comprises Y1-bCabCr1-cAlcO3, where 'b' is from 0.1 to 0.6 and 'c' is from 0 to 9.3. Preferably, 'b' is from 0.3 to 0.5 and 'c' is from 0.05 to 0.1. A composite solid oxide electrochemical fuel cell incorporating these materials comprises: a solid oxide air electrode and an adjacent solid oxide electrical interconnection which commonly include the cation Y, the air electrode comprising Y1-aQaMnO3, where 'Q' is selected from the group consisting of Ca and Sr or mixtures thereof and 'a' is from 0.1 to 0.8, the electrical interconnection comprising Y1-bCabCr1-cAlcO3, where 'b' is from 0.1 to 0.6 and 'c' is from 0.0 to 0.3; a yttrium stabilized solid electrolyte comprising (1-d)ZrO2-(d)Y2O3 where 'd' is from 0.06 to 0.5; and a solid fuel electrode comprising X-ZrO2, where 'X' is an elemental metal.
Abstract:
In apparatus useful in immunoassay of a fluid, light is directed to an optical sensor wherein the light is transmitted to a replaceable optical device that is responsive to index of refraction in a sensing region thereof that is exposed to the fluid. One portion of the light is transmitted via a reference path to a first detector. Another portion of the light is transmitted via a sensing path that includes the sensing region to another detector. A ratioing device receives an output from each detector and provides a signal responsive to the ratio of the outputs. The replaceable optical device typically comprises a pair of channel waveguides in directional coupling arrangement, or a pair of channel waveguides in an interferometer arrangement, or a ridge waveguide having a serpentine path.