摘要:
Colored corundum composite with a matrix of .alpha.-Al.sub.2 O.sub.3, as formed by sol-gel process ending in sintering and size reduction steps with addition of oxide pigments (or precursors of such oxide pigments, formable to the oxide pigment in sinter heating) added to the sol before full gelation thereof.
摘要:
A track recording support for recording devices is suggested with a support (10) made of paper or plastic on which a metallic coating (12) is mounted by means of evaporation and being able to be burned off by means of recording electrodes, in particular an aluminum coating. A lubricant in a finely dispersed form is added to contrast coating (11) for reducing of scratching and grinding traces on the surface of metal coating (12) which reaches metal coating (12) and the freely exposed surface thereof by means of diffusion. Preferably, the lubricant is fed to the contrast substance in a powdery form before the processing of the same. On the one hand, it acts in a physical point of view by a reduction of the slide friction on the surface and, on the other hand, in a chemical point of view in that it substantially prevents the build up of combustion residues from the contrast layer on the recording electrodes.
摘要:
A plastic composition degradable under the influence of weather or light, comprising a plastic material and finely divided titanium dioxide with a specific surface of more than about 20 m.sup.2 /g. Preferably the titanium dioxide is obtained by hydrolyzing titanium sulfate in aqueous solution, has a predominantly anatase structure, a lightening power of less than about 400, a specific surface of about 60 to 400 m.sup.2 /g and is present in about 0.5 to 5% by weight of the composition, and the plastic material is selected from the group consisting of polyethylene, ethylene-vinyl acetate copolymer, polystyrene, polyvinyl chloride, polyamides and ABS-polymers.
摘要:
The present invention relates to a method of producing and loading silk particles, preferably spider silk particles, with a compound. In particular, the present invention provides a novel two step method for loading silk particles, preferably spider silk particles, with small and water-soluble compounds. Also disclosed are silk particles, preferably spider silk particles, loaded with at least one compound which are eminently suited as carriers for controlled and sustained delivery applications. Furthermore, the invention relates to pharmaceutical or cosmetic compositions comprising said silk particles, preferably spider silk particles, and a pharmaceutically active compound or cosmetic compound for controlled and sustained release. The present invention is also directed to silk particles, preferably spider silk particles, loaded with a compound obtainable by the method according to the invention.
摘要:
The present invention relates to a method for the controlled intracellular delivery of nucleic acid molecules into one or more target cells, in particular tumor cells, the method comprising: providing a polymeric complex formed between one or more nucleic acid molecules to be delivered and one or more cationic carrier molecules, wherein at least a part of the one or more carrier molecules in the polymeric complex are covalently attached to hydroxyalkyl starch, and wherein the hydroxyalkyl starch is shielding the polymeric complex; allowing the shielded polymeric complex to get into contact with the one or more target cells; deshielding the polymeric complex by removing the hydroxyalkyl starch; and allowing the deshielded polymeric complex to internalize into the one or more target cells. Removal of the hydroxyalkyl starch can be accomplished enzymatically by exposing the polymeric complex to amylase. The invention also concerns the use of such method for the prevention and/or treatment of a condition selected from the group consisting of cancer, immune diseases, cardiovascular diseases, neuronal diseases, infections, and inflammatory diseases.
摘要:
The current invention reports a method for concentrating an immunoglobulin solution by tangential flow filtration wherein the transmembrane pressure and the cross-flow are variable.
摘要:
Herein is reported a tangential flow filtration method with a pre-filtration solute concentration adjustment in order to ensure a defined concentration of the components of the solution after tangential flow filtration.
摘要:
The present invention relates to a batch crystallization method for crystallizing an anti-hTNFalpha antibody which allows the production of said antibody on an industrial scale; antibody crystals as obtained according to said method; compositions containing said crystals as well as methods of use of said crystals and compositions.
摘要:
The invention concerns parenteral pharmaceutical forms of administration containing polypeptide in the form of microparticles and a process for the production thereof. The microparticles according to the invention contain as a biodegradable polymer an ABA triblock copolymer the A block of which is a copolymer of lactic and glycolic acid and the B block of which represents a polyethylene glycol chain, together with additives that are selected from the group comprising serum proteins, polyamino acids, cyclodextrins, cyclodextrin derivatives, saccharides, amino sugars, amino acids, detergents or carboxylic acids as well as mixtures of these additives. The microparticles according to the invention continuously release the polypeptide over a relatively long time period even when the amounts of polypeptide they include are small or susceptible to aggregation.