Abstract:
An organic electroluminescent device of a composite material that includes at least two emissive polymers confined into a layered inorganic host matrix, which effectively isolates the polymer chains from their neighbors, and a method for manufacturing same. The isolation of the emitting chains inhibits energy transfer and exciton diffusion between polymer chains, such that the electrically generated excitons recombine radiatively before their energy could be funneled to the emissive moiety with the lowest band gap. The emission color of such a composite is a combination of the emission of the confined polymers, and can be either white light, or can be tuned by selection of the ratio of the mixtures to output light of any desired color. The different polymers can either be mixed and then intercalated into the host matrix, or they can each be intercalated separately into the host matrix and the resulting composites mixed.
Abstract:
A method is provided for producing semiconductor nanoparticles comprising: (i) dissolving a semiconductor compound or mixture of semiconductor compounds in a solution; (ii) generating spray droplets of the resulting solution of semiconductor compound(s); (iii) vaporizing the solvent of said spray droplets, consequently producing a stream of unsupported semiconductor nanoparticles; and (iv) collecting said unsupported semiconductor nanoparticles on a support.
Abstract:
A system and method for detecting structural damage in a layered structure, the method compromising: providing an array of optical fibers attached to the layered structure; providing a laser source for emitting light into the optical fibers; providing a thermal imaging device; transferring laser light beam through each of the optical fibers of the array; acquiring at least one thermal image of an external surface of the layered structure; and detecting existence of one or more hot spots on the external surface indicative of a location of damage in the layered structure.
Abstract:
The invention relates to a core-alloyed shell semiconductor nanocrystal comprising: (i) a core of a semiconductor material having a selected band gap energy; (ii) a core-overcoating shell consisting of one or more layers comprised of an alloy of the said semiconductor of (i) and a second semiconductor; (iii) and an outer organic ligand layer, provided that the core semiconductor material is not HgTe. Preferably, the core semiconductor material is PbSe and the alloy shell semiconductor material has the PbSexS1-x structure.
Abstract:
A method for detecting a modulator of transcription of a human PPAR gene promoter is provided, comprising contacting a candidate compound with a cell transfected with an expression vector containing a heterologous gene operably linked to a PPAR promoter and an additional expression vector containing the FOXO1 gene, and comparing the level of expression of said heterologous gene in the presence of the compound and in the absence thereof, whereby a modulator of transcription of the human PPAR gene promoter is identified. The PPAR gene promoter is preferably the PPARγ2 promoter, and the DNA-binding domain of the FOXO1 protein binds to a sequence encompassing the 63 to 323 bp region of the human PPARγ2 promoter, preferably the 270 to 310 bp region.
Abstract:
A method for providing a vertical comb drive. The method comprises: fabricating a device comprising rotor comb element, the rotor element comb comprising a main body and a plurality of substantially parallel extensions in a comb arrangement, and at least one of a plurality of stator comb elements, comprising a main body and a plurality of substantially parallel extensions in a comb arrangement, adapted to be interlaced with the rotor, all on a single layer of a substrate.
Abstract:
A system and method for categorizing documents with the aid of an external knowledge database. In an exemplary embodiment of the invention, an external knowledge database is used to provide concepts related to the documents of a categorized database and an input document in order to improve the ability of correctly categorizing input documents. Additionally, the above system and method can be implemented to search for documents related to an input document.
Abstract:
Propargylamine, propargylamine derivatives including N-propargyl-1-aminoindan, enantiomers and analogs thereof, and pharmaceutically acceptable salts thereof, are useful for prevention or treatment of cardiovascular disorders, diseases and conditions.
Abstract:
Novel iron chelators exhibiting neuroprotective and good transport properties are useful in iron chelation therapy for treatment of a disease, disorder or condition associated with iron overload and oxidative stress, eg. a neurodegenerative or cerebrovascular disease or disorder, a neoplastic disease, hemochromatosis, thalassemia, a cardiovascular disease, diabetes, a inflammatory disorder, anthracycline cardiotoxicity, a viral infection, a protozoal infection, a yeast infection, retarding ageing, and prevention and/or treatment of skin ageing and skin protection against sunlight and/or UV light. The iron chelator function is provided by a 8-hydroxyquinoline, a hydroxypyridinone or a hydroxamate moiety, the neuroprotective function is imparted to the compound e.g. by a neuroprotective peptide, and a combined antiapoptotic and neuroprotective function by a propargyl group.
Abstract:
A device for bending a laser beam is provided. The device includes a beam deflection device that produces the beam having a selected number of addressable points. A soliton forming mechanism is positioned at the output of the beam deflection device so it receives the beam and increases the number of addressable points by a certain magnitude.