摘要:
A dental impression tray assembly includes an upper tray and a lower tray operable with the upper tray, and the lower tray includes a first piece configured to measure jaw relations of a patient's mouth and a pair of second pieces detachably attachable to the first piece. The first piece of the lower tray is inserted into the patient's mouth independently of the pair of second pieces of the lower tray to measure the jaw relations and to obtain a bite registration. After the first piece is connected to the pair of second pieces, the assembly allows a final gum impression of the patient's lower gum to be obtained.
摘要:
Disclosed are an acridine derivative and an organic electro-luminescence device including the same. Specifically, the disclosed acridine derivative compound has an aryl moiety or a heteroaryl moiety, linked to an acridine moiety and an amine moiety, and the disclosed organic electro-luminescence device including the acridine derivative compound requires a low operating voltage, shows high efficiency, and is enhanced in life-span.
摘要:
A deposition mask and mask assembly having the same capable of improving deposition effieiency is discussed. Both ends of the deposition mask have a pointed cross section such that at least a part of the neighboring deposition masks overlap each other at a boundary therebetween when deposition masks are consecutively arranged in parallel.
摘要:
A dynamic logic circuit includes a first region including a plurality of PMOS transistors and a second region, adjacent to the first region, including a plurality of NMOS transistors connected with at least one of the plurality of PMOS transistors. Channel sizes of the plurality of NMOS transistors are greater than channel sizes of the plurality of PMOS transistors.
摘要:
Provided is a method of preparing asymmetric anthracene derivative, more particularly, a method for high-yield production of an anthracene derivative in which an alkyl group, a cycloalkyl group, a heterocycloalkyl group, an aryl group or a heteroaryl group is introduced at position 2 of anthracene, and an aryl group or a heteroaryl group is introduced at each of positions 9 and 10 of the anthracene.
摘要:
There is provided a method of forming a pattern on a group III nitride semiconductor substrate. A method of forming a pattern on a group III nitride semiconductor substrate according to an aspect of the invention may include: irradiating a laser beam onto at least one first region for preventing etching in a group III nitride semiconductor substrate; and etching at least one second region exclusive of the first region using the first region irradiated with the laser beam as a mask.
摘要:
A lumbar support device of a seat for a vehicle surrounds and supports the lumbar region of a passenger. In the lumbar support device, a mounting bracket is fastened to a seat back frame. A support panel is coupled to the mounting bracket through link units so as to be movable ahead of the seat back frame. Side support units are coupled to respective opposite ends of the support panel so as to be rotatable. A connection wire is connected between each of the side support units and the corresponding link unit of the support panel such that when the support panel moves forwards, the side support units surround side portions of the lumbar region of the passenger.
摘要:
Disclosed are asymmetric styryl derivatives and an organic light emitting diode prepared using the same. More particularly, there are provided asymmetric styryl derivatives that can provide a blue organic light emitting diode with superior thermal stability, as well as improved luminous efficiency, improved brightness, and extended lifetime, by synthesizing a novel thermally stable compound with a styryl structure represented by Formula 1, and using the compound as a dopant in an organic light emitting layer (EML) of a multilayered organic light emitting diode, and an organic light emitting diode prepared by the same.
摘要:
The present invention relates to a method of composting and treating food waste by using wood chips and an apparatus therefor. The method and apparatus for the composting and treatment of food waste in accordance with the present invention can recycle food waste as an organic compost by using wood chips in an eco-friendly manner and convert effluents generated from said food waste into an effluent satisfying water quality suitable for discharging by a combined biological and chemical process. Therefore, the present invention can be effectively used for recycling and treating food waste.
摘要:
An OPCPA apparatus of the present invention includes an optical pulse stretcher (100) for temporally stretching laser light, and applying short-wavelength preceding-type chirping. Pump lasers (210, 220) emit pump laser light. A first OPA unit (310) receives the pump laser light, and a signal having passed through the optical pulse stretcher, amplifies the signal, and generates a first idler. A first optical signal separation unit (410) separates output light of the first OPA unit into the first idler and remaining light (pump and signal). A second OPA unit (320) receives the first idler and another pump laser light, amplifies the first idler, and generates a second idler. A second optical signal separation unit (420) separates output light of the second optical parametric amplification unit into an amplified first idler and remaining light (pump and second idler). An optical pulse compressor (600) temporally compresses the amplified first idler.