摘要:
The present invention provides compositions and methods for the production of silk fibroin matrices surface-PEGylated on one or more surfaces. Such surface-PEGylated silk fibroin matrices can be used in biomedical applications, such as anti-adhesive and anti-thrombosis materials. Silk matrices may be surface-PEGylated, for example, by a reaction with a functional group-activated PEG. Controlling the degree of PEGylation on surface of silk fibroin matrix can regulate both the degradation rate of the silk matrix, and the differentiated adhesion of cells or differentiated adsorption of proteins on the surface of the silk matrix. The present invention also provides for silk fibroin matrices having one or more surfaces possessing differentiated adhesion properties, which allows for tissue integration on the adherent side and inhibition of tissue adhesion to the opposing tissues or organs. Embedding active agents in silk fibroin matrices provides more benefits, such as promoting tissue ingrowth on the adherent side of the matrix.
摘要:
This invention relates to sustained release formulations comprising silk fibroin biopolymer and adenosine, that provide for sustained, focal release of adenosine at therapeutic levels for the treatment of epilepsy and/or the prevention of epileptogenesis. An embodiment provides for a silk-based, adeno sine-releasing implant that alleviates seizures or prevents epileptogenesis. Another embodiment provides for a method of treating epilepsy or preventing epileptogenesis comprising focally administering adenosine in a sustained-release, silk-based adenosine delivery system.
摘要:
The present invention provides processes for producing porous silk fibroin scaffold material. The porous silk fibroin scaffold can be used for tissue engineering. The porosity of the silk fibroin scaffolds described herein can be adjusted as to mimic the gradient of densities found in natural tissue. Accordingly, methods for engineering of 3-dimensional tissue, e.g. bone and cartilage, using the silk fibroin scaffold material are also provided.
摘要:
The present invention is directed to a method for forming an inorganic coating on a protein template. The method comprises contacting the template with an anionic polymer interface followed by an inorganic material for a sufficient period of time to allow mineralization of the inorganic material thus forming an inorganic coating on the template. Preferably, the coating is aligned.
摘要:
Systems and methods are described for a power aggregation system. In one implementation, a service establishes individual Internet connections to numerous electric resources intermittently connected to the power grid, such as electric vehicles. The Internet connection may be made over the same wire that connects the resource to the power grid. The service optimizes power flows to suit the needs of each resource and each resource owner, while aggregating flows across numerous resources to suit the needs of the power grid. The service can bring vast numbers of electric vehicle batteries online as a new, dynamically aggregated power resource for the power grid. Electric vehicle owners can participate in an electricity trading economy regardless of where they plug into the power grid.
摘要:
The present invention is directed to a method for forming an inorganic coating on a protein template. The method comprises contacting the template with an anionic polymer interface followed by an inorganic material for a sufficient period of time to allow mineralization of the inorganic material thus forming an inorganic coating on the template. Preferably, the coating is aligned.
摘要:
A method of manufacturing a biopolymer optical waveguide includes providing a biopolymer, unwinding the biopolymer progressively to extract individual biopolymer fibers, and putting the unwound fibers under tension. The tensioned fibers are then cast in a different polymer to form a biopolymer optical waveguide that guides light due to the difference in indices of refraction between the biopolymer and the different polymer. The optical fibers may be used in biomedical applications and can be inserted in the body as transmissive media. Printing techniques may be used to manufacture the biopolymer optical waveguides.
摘要:
The present invention provides for concentrated aqueous silk fibroin solutions and an all-aqueous mode for preparation of concentrated aqueous fibroin solutions that avoids the use of organic solvents, direct additives, or harsh chemicals. The invention further provides for the use of these solutions in production of materials, e.g., fibers, films, foams, meshes, scaffolds and hydrogels.
摘要:
Systems and methods are described for a power aggregation system. In one implementation, a method includes a establishing a communication connection with each of multiple electric resources connected to a power grid, receiving an energy generation signal from a power grid operator, and controlling a number of the electric resources being charged by the power grid as a function of the energy generation signal.
摘要:
Systems and methods are described for a power aggregation system. In one implementation, a method includes charging an electric resource over a power connection to an electric network, obtaining a unique identifier of a device over the power connection, and determining an electric network location of the electric resource from the unique identifier.