摘要:
The present invention relates to a recombinant Escherichia coli having phbCAB originated from Alcaligenes eutrophus and an overproduction method of polyhydroxyalkanoate using the same, more precisely, a recombinant Escherichia coli ‘MG1655/pTZ18U-PHB’ or ‘JIL938/pTZ18U-PHB’ having phbCAB originated from Alcaligenes eutrophus and an overproduction method of polyhydroxyalkanoate comprising the steps of preparing transformed Escherichia coli having phbCAB originated from Alcaligenes eutrophus, inoculating and culturing the cells (growth phase), inducing the production of polyhydroxyalkanoate in the recomibnant Escherichia coli (stationary phase and producing phase), and inducing the extracellular secretion of the polyhydroxyalkanoate from the recombinant Escherichia coli. The method of the present invention facilitates not only overproduction of polyhydroxyalkanoate such as polyhydroxybutyrate by a simple batch culture but also industrial use of biodegradable polyhydroxyalkanoate replacing conventional non-biodegradable plastics by its simple and easy fermentation, separation and purification process.
摘要:
A rechargeable battery includes a case having an interior and an exterior, an electrode assembly having first and second electrodes, the electrode assembly being disposed in the interior of the case, and an electrode terminal member at the exterior of the case and electrically connected to the first electrode, wherein the electrode terminal member includes a first plate and a second plate, the first plate and the second plate being spaced apart from each other.
摘要:
A battery includes a plurality of electrode assemblies, each having an electrode and an electrode uncoated region, such that the plurality of electrode assemblies together present a plurality of electrodes and electrode uncoated regions, an electrode terminal, and a current collecting member electrically connecting the electrode terminal and the plurality of electrodes of the electrode assemblies, the current collecting member including a terminal connection portion, and side plates, extending from lateral sides of the terminal connection portion, a plurality of current collecting plates, each current collecting plate contacting the electrode uncoated region of a respective one of the plurality of electrode assemblies, a plurality of supporting portions, each supporting portion connecting certain adjacent ones of the current collecting plates together, each of the side plates being coupled with at least one of the current collecting plates.
摘要:
A method and apparatus for generating vibration in a portable terminal are provided. The apparatus for generating vibration in a portable terminal includes a plurality of vibrators mounted and driven to generate vibration in a single vibration direction at positions separated from each other by predetermined distances on the portable terminal, and a controller for determining respective vibration patterns of the plurality of vibrators according to a control operation of the portable terminal and driving the plurality of vibrators according to the vibration patterns.
摘要:
A haptic function control method for a portable terminal including a receipt-specific vibration motor that vibrates in a first frequency band and a haptic-specific vibration motor that vibrates in a second frequency band. At least one of the receipt-specific vibration motor and the haptic-specific vibration motor is driven based on a drive sampling frequency signal. The drive sampling frequency signal that vibrates the receipt-specific vibration motor and the haptic-specific vibration motor is determined from the first frequency band and the second frequency band.
摘要:
A head-mounted display for forming a virtual image at a predetermined distance in front of a user includes: a left eye unit and a right eye unit, each eye unit having an image module for generating an image and an optical system disposed at a predetermined distance from the image module and towards the user's eyeball for forming a virtual image at a predetermined distance from the user by enlarging the generated image. A main body has both the left eye unit and the right eye connected thereto, wherein portions of the main body to which the left eye unit and the right eye unit are connected are each inclined to sustain a predetermined angle from the center of the main body. By utilizing a user's visual convergence so that a virtual image may be displayed at a target position, variation of a distance determination between users is reduced, and thus a viewing effect to the user of a virtual image being formed at a target position is obtained, thereby improving user satisfaction.
摘要:
A hybrid toner and a method of preparing the toner are provided. The hybrid toner is of a core-shell type, and as such the storage characteristics of the toner are improved and a toner blocking phenomenon and image contamination that are caused by dispersion of waxes or colorants onto the surface of the outer layer of toner particles are prevented. The hybrid toner includes particles include: a core of about 100 parts by weight of a polyester-based resin, about 1-20 parts by weight of a wax, about 0.1-10 parts by weight of a colorant and about 0.1-10 parts by weight of a charge control agent; and a shell of about 5-500 parts by weight of a vinyl-based resin, about 0.1-10 parts by weight of silica, about 0.1-5 parts by weight of a metal oxide and about 0.1-10 parts by weight of polymer beads.
摘要:
A vertical cavity surface-emitting laser (VCSEL) and a method of fabricating the same with easier alignment of a light output side aperture and an oxide aperture, The VCSEL includes: lower and upper reflection layers laminated with each other and forming a longitudinal resonance section there between; an active layer for producing a laser beam, an electrode formed in a ring shape on the upper reflection layer so the electrode has an aperture through which the laser beam is projected; a contact layer formed on the upper reflection layer; a ¼ wavelength layer formed on the contact layer such that a high transmittance area with the highest transmittance for the laser beam is formed within the aperture of the electrode; and a dielectric layer covering the contact layer and the ¼ wavelength layer, except for the electrode formed part.
摘要:
A vehicle wiper blade and wiper blade assembly having a longitudinal stiffener mounted on the blade body at an offset angle from the central geometric plane of the blade edge, defined by the neck and wiping edge of the blade. When mounted in the presence of a wind stream flowing over the vehicular windshield, the protruding face surfaces of the stiffener function as an air dam to reduce lift-off effects, or as an airfoil to provide a supplemental pressure directing the wiper blade against the windshield. The proximity of the lower, forward edge of the blade to the windshield serves as an air dam. The upper trailing edge of the blade may be extended to serve as an airfoil. Torque about the wiping edge is avoided by directing the wiper arm pressing force in alignment with the central geometric plane of the blade, and preferably through the neck portion of the blade.
摘要:
A vertical-cavity surface emitting laser includes a substrate and a first mirror that is grown on the substrate, a second mirror grown on the first mirror for resonating the first mirror and light, an active layer between the first mirror and the second mirror for generating and amplifying the light, an upper electrode grown on the active layer and a lower electrode formed on the first mirror for supplying current to the active layer, a planarizing polymer formed on the first mirror for burying the active layer and the second layer, and a first external terminal extending from the upper electrode in a vertical upward direction to be exposed to the top surface of the planarizing polymer and a second external terminal extending from the lower electrode to expose its one surface to the top surface of the planarizing polymer.