摘要:
The present invention generally relates to systems and methods of forming particles and, in certain aspects, to systems and methods of forming particles that are substantially monodisperse. Microfluidic systems and techniques for forming such particles are provided, for instance, particles may be formed using gellation, solidification, and/or chemical reactions such as cross-linking, polymerization, and/or interfacial polymerization reactions. In one aspect, the present invention is directed to a plurality of particles having an average dimension of less than about 500 micrometers and a distribution of dimensions such that no more than about 5% of the particles have a dimension greater than about 10% of the average dimension, which can be made via microfluidic systems. In one set of embodiments, at least some of the particles may comprise a metal, and in certain embodiments, at least some of the particles may comprise a magnetizable material. In another set of embodiments, at least some of the particles may be porous. In some embodiments, the invention includes non-spherical particles. Non-spherical particles may be formed, for example, by urging a fluidic droplet into a channel having a smallest dimension that is smaller than the diameter of a perfect mathematical sphere having a volume of the droplet, and solidifying the droplet, and/or by exposing at least a portion of a plurality of particles to an agent able to remove at least a portion of the particles.
摘要:
The present invention relates to a pharmaceutical composition containing as an active ingredient, itraconazole. More particularly, the present invention relates to the pharmaceutical composition comprising itraconazole, a polylactic acid derivative, and an amphiphilic block copolymer. The polylactic acid derivative may be combined with a metal ion at the carboxylic acid terminal, and the amphiphilic block copolymer forms micelles or nano-particles in an aqueous medium.
摘要:
Disclosed is an electroless metal film-plating system. While polyimide film is continuously fed from a roll, a series of wetting processes, including a degreasing process, an etching process, a neutralizing process, a coupling process, a catalyst-adding process, an undercoating process, and a plating process are conducted, in order, so as to plate one or both surfaces of the film with a conductive metal, followed by drying the conductive metal-plated film and taking up the plated film into a roll. A wetting process, in which the film passes through a liquid solution and is repetitively immersed in and drawn from a washing solution, is applied to all process parts, several parts notwithstanding, to produce a bilayer structure FCCL exhibiting superior physical properties such as peel strength. Also, after immersion in liquid in each process, the liquid is removed using wringing rollers so as to coat the material of interest at a uniform thickness. In the unwinding process for feeding the film, and the winding process for taking up the film, roller assemblies comprising a plurality of fixed rollers and a plurality of movable rollers are employed to control the tension of the film, thereby transporting the film without causing twisting or distortion. Also, one or more auxiliary operating processes are provided to facilitate the transfer of the film.
摘要:
The present invention relates to an amphiphilic block copolymer of a hydrophilic block and a hydrophobic block with a terminal hydroxyl group wherein the terminal hydroxyl group of the hydrophobic bock is substituted with a tocopherol or cholesterol group. It also relates to polymeric compositions capable of forming stable micelles in an aqueous solution, comprising the amphiphilic block copolymer and a polylactic acid derivative wherein one or more ends of the polylactic acid are covalently bound to at least one carboxyl group.
摘要:
A filter having a high transmittance is disclosed. The filter comprises a substrate having a first surface and a second surface, and a periodic or random array of through-holes formed so as to pass through the first surface and the second surface. The through-hole has a size of subwavelength at a range of infrared and terahertz wave. Here, transmission resonance characteristic of incident light on the first surface is controlled by a shape of the through-hole.
摘要:
Disclosed is a process for a conductive metal plated polyimide substrate. The process for a conductive metal plated polyimide substrate comprises a) etching surface of the polyimide film with KOH, mixed solution of ethylene glycol and KOH, or mixed solution of CrO3 and H2SO4, b) coupling the etched surface of the polyimide film with a coupling agent, c) absorbing a catalyst on the polyimide film, d) plating a first conductive metal on the polyimide film which the catalyst was absorbed without applying current, to form a first conductive metal thin film, and e) plating a second conductive metal on the first conductive metal thin film with applying current, to form a second conductive metal thin film.
摘要:
Dual capacity compressor including a power generating part (20) having a reversible motor (21, 22) and a crank shaft (23) inserted in the motor (21, 23), a compression part (30) having a cylinder (32), a piston (31), and a connecting rod (33), a crank pin (110) in an upper part of the crank shaft (23) eccentric to an axis of the crank shaft, an eccentric sleeve (120) rotatably fitted to the crank pin (110), and the connecting rod (33) respectively, a key member (130) for positive fastening of the eccentric sleeve (120 ) to the crank pin (110) in all rotation directions of the motor, and an eccentric mass (200) provided to the eccentric sleeve (120) for rotating the eccentric sleeve (120) around the crank pin (110), thereby preventing relative motion between components that sustain the eccentricity, and permitting a smooth motion between the components.