Abstract: Provided is a method of manufacturing a drug delivery system including a first surfactant and a second surfactant, the drug delivery system manufactured by using the method, and a contrast medium, wherein the first surfactant includes a polyethylene glycol based nonionic surfactant and the second surfactant includes a Tween-type surfactant or a SPAN-type surfactant. According to the present invention, the microbubble including the first surfactant, which includes a polyethylene glycol (PEG) based nonionic surfactant, and the second surfactant, which includes a Tween-type surfactant or a SPAN-type surfactant, may stably have uniform size distribution, may include high loading amount of drugs and dye on the surface of the delivery system, and thereby, may be efficiently used as a drug delivery system. Also, drug release may increase by ultrasonic wave, which is external stimulus, from the microbubble and thereby, more efficient drug delivery may be available.

Abstract: An ultrasound-induced drug delivery system is described, using a drug carrier containing a plurality of nanobubbles and a high concentration of a drug in one microcapsule, and a method for preparing the drug delivery system, by generating the nanobubbles in an oil into which the drug is dissolved using a nanobubble generator, and then microencapsulating them. The drug delivery system has an effect of maximizing a drug delivery efficiency as the nanobubbles collapse or aggregate when the ultrasound is applied to the drug delivery system. Since the drug delivery system contains a plurality of nanobubbles within the microcapsules, it can also be used as a contrast agent, or can be used to simultaneously perform in vivo diagnosis and treatment.

Abstract: Disclosed are an emulsion composition including oilgel capsules, a coating composition including the emulsion composition, and a method for preparing the same, as well as a method for coating a machine part with the coating composition. In particular, the compositions and machine parts have excellent wear resistance and increased production compared to an existing process of providing oilgel capsules as an overlay layer by mixing an organic solvent and a nonionic surfactant with an oilgel.

Abstract: Proposed are an ultrasound-assisted drug delivery carrier containing a ligand linked with a drug through an ester bond, a phospholipid, and a PEGylated phospholipid, a composition for drug delivery including the drug delivery carrier, and a method of preventing or treating a disease including administering the composition to an individual other than a human and releasing a drug by subjecting the site of administration of the composition to ultrasound irradiation. The ultrasound-assisted drug delivery carrier containing a ligand linked with a drug through an ester bond, a phospholipid, and a PEGylated phospholipid can be provided in the form of microbubbles or nanobubbles, and is capable of accelerating drug release due to collapse of the bubbles and promotion of hydrolysis of the ester bond during ultrasound irradiation, making it possible to deliver the drug to a desired site with high efficiency.

Abstract: An oil gel capsule includes an oil gel including an oil and a gelator, and at least one surfactant bonded to the oil gel. A contact part for a vehicle includes an overlay layer formed on a surface of the contact part, the overlay layer comprising oil gel capsules, wherein the oil gel capsules including an oil gel including an oil and a gelator, and at least one surfactant bonded to the oil gel.

Abstract: The present disclosure relates to manufacturing oil gel capsules and adding the same to an overlay layer of a contact part for a vehicle. The present disclosure may provide a method for manufacturing oil gel capsules and a method for manufacturing a contact part for a vehicle, including the oil gel capsules. The oil gels in the oil gel capsules manufactured by the present disclosure may respond to the temperature environment of a contact part for a vehicle, and an aggregation phenomenon of gelators or an aggregation phenomenon of surfactants may not occur even after an oil is released. Therefore, as oil gel capsules are added to an overlay layer, the present disclosure may improve low friction characteristics and seizure resistance characteristics of a contact part for a vehicle without any side effects caused by the above-described aggregation phenomenon.

Abstract: The present invention relates to an ultrasound-induced drug delivery system using a drug carrier containing a plurality of nanobubbles and a high concentration of a drug in one microcapsule, and specifically is directed to a method for preparing a drug delivery system having a high concentration of a drug and a plurality of nanobubbles encapsulated therein, by generating the nanobubbles in an oil into which the drug is dissolved using a nanobubble generator, and then microencapsulating them; and an ultrasound-induced drug delivery system using the same. The drug delivery system using the nanobubbles according to the present invention is prepared in the form of microcapsules in which both the drug and the nanobubbles are encapsulated, and, in particular, has an effect of maximizing drug delivery efficiency as the nanobubbles collapse or aggregate when the ultrasound is applied to the drug delivery system.

Abstract: The present disclosure relates to manufacturing oil gel capsules and adding the same to an overlay layer of a contact part for a vehicle. The present disclosure may provide a method for manufacturing oil gel capsules and a method for manufacturing a contact part for a vehicle, including the oil gel capsules. The oil gels in the oil gel capsules manufactured by the present disclosure may respond to the temperature environment of a contact part for a vehicle, and an aggregation phenomenon of gelators or an aggregation phenomenon of surfactants may not occur even after an oil is released. Therefore, as oil gel capsules are added to an overlay layer, the present disclosure may improve low friction characteristics and seizure resistance characteristics of a contact part for a vehicle without any side effects caused by the above-described aggregation phenomenon.

Abstract: An oil gel capsule includes an oil gel including an oil and a gelator, and at least one surfactant bonded to the oil gel. A contact part for a vehicle includes an overlay layer formed on a surface of the contact part, the overlay layer comprising oil gel capsules, wherein the oil gel capsules including an oil gel including an oil and a gelator, and at least one surfactant bonded to the oil gel.

Abstract: A safety device for a microwave oven capable of improving the assembly of the microwave oven by reducing a length of a door latch and thus securing more spacious assembly space for other parts of microwave oven. The safety device for the microwave oven includes a door key movably mounted on a door of the microwave oven and having a key switch portion protruding toward the front side of the cabinet; and a plurality of switches to be turned on/off in accordance with the reception/withdrawal of the key switch portion to selectively connect a power supply with a driving circuit, and one of the plurality of switches that is arranged in the innermost position of the device chamber is operated directly by the key switch portion.

Abstract: A microwave oven is disclosed, in which the edges of the opening between the cooking chamber and electrical component compartment are bent, thereby strengthening the side panel on which the opening is formed and also forming half of a joining means which connects a cover plate to the opening. The cover plate includes hooked catches(the other half of the joining means) and flexible sealing members that lie flush against the side panel when the cover plate is installed. The elasticity of these sealing members allows them to maintain a tight seal even if the shape of the side panel becomes distorted during the assembly of the microwave.