摘要:
The presently claimed and disclosed inventions relate, in general, to methods of radiation dosimetry and imaging using scintillation luminescence. More particularly, materials having a scintillation luminescence response to radiation that varies with total radiation dose received can be used for dosimetry monitoring, including, but not limited to nanoparticles for in vivo, real-time dosimetry. Energy-transfer nanocomposite materials as well as methods of making and using such materials in various applications including, but not limited to, in vivo radiation dosimetry and imaging, are disclosed. More particularly, the presently claimed and disclosed inventions relate to nanoparticle scintillation luminescence particles encapsulated in hosts of the general formula BaFX and BaFX:Eu2+ where X=Cl, Br and I.
摘要:
A cell growth matrix for optimizing 3D organization nutrient delivery, controlling release of differentiation factors and facilitating attachment of cells to a scaffold Colloidal crystals and inverted colloidal crystals are used to form an ordered structure for use as a scaffold for tissue engineering. The porosity of the cell growth matrix may be modified by the selection of particles of appropriate diameter. Further, the surface of colloidal crystals can be easily modified to accommodate many organic species including biomolecules. Layer-by-layer materials are used for tissue engineering to control cell development by using sequential layering of bioactive species wherein the number and order of LBL layers deposited between layers containing a particular protein are controlled. LBL may also be used for timed release of bioactive species. Increased control differentiation factors release and control of cell attachments to the scaffold are achieved to better mimic natural tissue development.
摘要:
Processes are disclosed for preparing the antiviral agent entecavir. A resin adsorption process for the isolation and purification of entecavir is also disclosed. Various intermediates useful in the preparation of entecavir are also disclosed.
摘要:
A method is provided for preparing carboxylic acid intermediates of the structure ##STR1## wherein an aldehyde of the structure ##STR2## is prepared and subjected to a Horner-Emmons reaction to form the ester of the structure ##STR3## and the ester is hydrogenated to the carboxylic acid which may be used in making the final anti-thrombotic--anti-vasospastic compounds.
摘要:
The presently claimed and disclosed inventions relate, in general, to methods of radiation dosimetry and imaging using scintillation luminescence. More particularly, materials having a scintillation luminescence response to radiation that varies with total radiation dose received can be used for dosimetry monitoring, including, but not limited to nanoparticles for in vivo, real-time dosimetry. Energy-transfer nanocomposite materials as well as methods of making and using such materials in various applications including, but not limited to, in vivo radiation dosimetry and imaging, are disclosed. More particularly, the presently claimed and disclosed inventions relate to nanoparticle scintillation luminescence particles encapsulated in hosts of the general formula BaFX and BaFX:Eu2+ where X═Cl, Br and I.
摘要:
A nanoparticle fluorescence (or upconversion) sensor comprises an electromagnetic source, a sample and a detector. The electromagnetic source emits an excitation. The sample is positioned within the excitation. At least a portion of the sample is associated with a sensory material. The sensory material receives at least a portion of the excitation emitted by the electromagnetic source. The sensory material has a plurality of luminescent nanoparticles luminescing upon receipt of the excitation with luminance emitted by the luminescent nanoparticles changing based on at least one of temperature and pressure. The detector receives at least a portion of the luminance emitted by the luminescent nanoparticles and outputs a luminance signal indicative of such luminance. The luminescence signal is correlated into a signal indicative of the atmosphere adjacent to the sensory material.
摘要:
Processes are disclosed for preparing the antiviral agent entecavir. A resin adsorption process for the isolation and purification of entecavir is also disclosed. Various intermediates useful in the preparation of entecavir are also disclosed.
摘要:
The present invention relates to novel 7-oxabicycloheptane carboxylic acid prostaglandin analog intermediates which may be used to prepare a final anti-thrombotic, anti-vasospastic product, and to methods for preparing the same.
摘要:
The current invention provides methods for detecting trace analytes in solution or suspension using coupled micro-ring resonators. The methods of the current invention determine the presence and concentration of the target analytes in real time by exposing the micro-ring resonator to the analyte and determining the resulting rate of change of resonance wavelength experienced by a sensing micro-ring resonator as compared to a reference micro-ring resonator.
摘要:
A nanoparticle fluorescence (or upconversion) sensor comprises an electromagnetic source, a sample and a detector. The electromagnetic source emits an excitation. The sample is positioned within the excitation. At least a portion of the sample is associated with a sensory material. The sensory material receives at least a portion of the excitation emitted by the electromagnetic source. The sensory material has a plurality of luminescent nanoparticles luminescing upon receipt of the excitation with luminance emitted by the luminescent nanoparticles changing based on at least one of temperature and pressure. The detector receives at least a portion of the luminance emitted by the luminescent nanoparticles and outputs a luminance signal indicative of such luminance. The luminescence signal is correlated into a signal indicative of the atmosphere adjacent to the sensory material.