Abstract: Provided is a zwitterionic lipid compound represented by formula (I) given below: 1

Abstract: A method for preparing a vesicle dispersion wherein a water-soluble substance is encupsulated in the vesicle, which comprises successively performing: a step of dispersing at least one lipid in an aqueous medium to pre-construct a vesicle dispersion, a step of drying the pre-constructed vesicles to obtain dried vesicle, a step of re-dispersing the dried vesicles in an aqueous solution of the water-soluble substance, and a step of passing the resultant vesicle dispersion through a filter. The method enables the efficient and simple preparation of safe vesicles with a useful substance in high concentration encupsulated therein, with a narrow size distribution, in high yield.

Abstract: As a negatively charged lipid that can stably add negative charges to the surface of vesicles without side effects, the carboxyl acid-type lipid of the following general formula [1] 1

Abstract: There is provided a method for preserving an oxygen infusion comprising a suspension containing hemoglobin or a heme derivative contained in molecular assemblies suspended in a aqueous medium, comprising modifying the molecular assemblies with polyoxyethylene, and making the hemoglobin or the heme derivative to a deoxy-type by removing oxygen from the suspension.

Abstract: An amphiphilic compound having a dendritic branch structure represented by general formula (I): 1

Abstract: Disclosed is a method and apparatus for regenerating an oxygen-binding ability by reducing the methemoglobin contained in hemoglobin-vesicle by light irradiation. This method comprises adding electron donors such as amino acids, saccharides, alcohols, and/or flavin derivatives in appropriate amounts to the inner aqueous phase of the hemoglobin-vesicle, applying light to the vesicle when the content of methemoglobin increases as a result of oxidation of hemoglobin, thereby reducing the metohemoglobin. In this manner, the oxygen-binding ability is recovered, thereby maintaining the function of the hemoglobin-vesicle.

Abstract: An oxidant solution for synthesizing a heat-resistant electroconductive polymer, composed of a solution of a non-protonic organic solvent and an oxidant of the organic compound iron salt expressed by the following formula:Fe.sup.3+O [(X)L--(M)m--(Y.sup.-)n]pH.sup.

Abstract: The solid electrolytic capacitor comprises a sealed capacitor element having, as a solid electrolyte layer, a heat resistant conductive layer formed on a dielectric oxide film. The heat resistant conducting polymer layer contains water, and the capacitor element inside is substantially oxygen-free. A cathode conductive layer is provided on the capacitor element and then both an external cathode lead and an external anode lead are mounted on the capacitor element. Water is supplied to the conducting polymer layer of the capacitor element such that the conducting polymer layer inside contains water. The capacitor element is then sealed such that water is held within the heat resistant conducting polymer layer and that the capacitor element inside is substantially oxygen-free. The step of supplying water is carried out by dipping the heat resistant conducting polymer layer in water or heavy water or exposed to water-containing inert gas.

Abstract: An oligosaccharide lipid is provided which has 2 to 20 saccharide units, and has a hydrophobic group linked by an ether linkage to an anomer carbon on a reducing end group. A stabilizer for a phospholipid vesicle is also provided which comprises an oligosaccharide derivative having 2 to 20 saccharide units, and having a hydrophobic group linked by an amide linkage or an ether linkage to an anomer carbon on a reducing end group constituted of an aldose.

Abstract: The present invention relates to a micromolecular endoplasmic reticulum which comprises a polymer obtained by polymerization of a mixture containing one or more polymerizable phospholipids, cholesterol and one or more polymerizable fatty acid. The macromolecular endoplasmic reticulum in which surface charge is fixed to negative can be used as a carrier of medicine, enzyme, hemoglobin, etc. in industrial fields or medical fields.

Abstract: A process for manufacturing a solid state electrolytic capacitor having on an anode a dielectric coating layer and a solid state electrolytic layer, comprises the steps of forming a conductive polymer compound layer as the solid state electrolytic layer, and subsequently forming the dielectric coating layer by anodizing.