摘要:
The present invention relates to a dental implant, and more particularly, to a dental implant including a fixture 10, an abutment 30 coupled to an upper end of the fixture 10, and an abutment fixing screw 40 coupling the abutment 30 to the fixture 10. The fixture 10 is molded of ceramic and includes a screw part 13 disposed on an outer circumferential surface and a screw hole 14, to which the abutment fixing screw 40 is coupled, disposed in a central axis direction. A helical coil 20 is disposed between the screw hole 14 of the fixture 10 and the abutment fixing screw 40 to couple an outer portion 21a of the helical coil 20 to a screw valley 14a of the screw hole 14 of the ceramic fixture 10 and an inner portion 21b to a valley 41a of the screw part 41 of the abutment fixing screw 40 in a screw coupling manner.
摘要:
The present invention relates to an apparatus for preventing an abutment from being loosened in a dental implant comprising: a fixture (10) which is fixedly installed in a jawbone (1); the abutment (20) coupled to the fixture (10) includes an upper hole (23a) having a bottom surface (24) and a lower hole (23b); and a fastening screw (40) for fixing the abutment (20) to the fixture, wherein the apparatus suppresses unfastening of the fastening screw (40) fastened to the screw part (13) of the fixture (10), thereby preventing the abutment (20) from being loosened from the fixture (10).
摘要:
Disclosed is a method for manufacturing a cell transistor of a semiconductor memory device. The method comprises the steps of: forming device isolation films and a well on a semiconductor substrate; forming a threshold voltage adjust region by ion-implanting a first conductive impurity dopant into the well of the semiconductor substrate; performing a first thermal annealing on the semiconductor substrate where the threshold voltage adjust region is formed; forming a gate insulating film and gate electrodes on top of the semiconductor substrate between the device isolation films; forming a halo ion implantation region by ion-implanting a first conductive impurity dopant into the semiconductor substrate corresponding to a drain region exposed by the gate electrodes; performing a second thermal annealing on the semiconductor substrate where the halo ion implantation region is formed; and forming source/drain regions by ion-implanting a second conductive impurity dopant into the semiconductor substrate exposed by the gate electrodes. This method can reduce the turn-off leakage current of the cell transistor since the dopant dose of the threshold voltage adjust region can be reduced while maintaining the threshold voltage by increasing the dopant diffusion of the threshold voltage adjust region.
摘要:
The present invention relates to a composition for nucleic acid delivery and a method for preparing the same, more particularly to a composition for nucleic acid delivery having excellent stability in the body environment and excellent intracellular delivery efficiency of nucleic acid, and enabling target directed delivery of nucleic acid, and a method for preparing the same.
摘要:
An educational robot apparatus for children, as a type of a user created robot (UCR), includes a robot and a robot control program having a decoder, a controller and a transferor. The decoder scans an input card and has first and second photo-interrupter. The input card includes an information code and a reference code. The information code has a code information written as a barcode shape. The code information corresponds to an imperative sentence included in a robot control program. The reference code is written as a uniform barcode shape and is used in decoding the code information. The first photo-interrupter reads the information code and decodes the code information, and the second photo-interrupter decodes the reference code. The controller codes the robot control program based on the code information decoded by the decoder. The transferor transfers the robot control program to the robot.
摘要:
The present invention relates to a composition for nucleic acid delivery and a method for preparing the same, more particularly to a composition for nucleic acid delivery having excellent stability in the body environment and excellent intracellular delivery efficiency of nucleic acid, and enabling target directed delivery of nucleic acid, and a method for preparing the same.
摘要:
The present invention relates to a cell culture dish for the erabryoid body formation from embryonic stem cells, which facilitates efficient and stable differentiation of embryonic stem cells by forming embryoid body in grooves on the bottom of a support adhered on the back of the lid for the culture dish by hanging drop culture.
摘要:
A method for transmitting a message including inputting, at a transmitting terminal, a message body and an activation condition indicating when the message body is to be activated on a receiving terminal, and transmitting message data to the receiving terminal. The message data includes the message body and the activation condition. Further, the activation condition is compared to a current status of the receiving terminal to determine when the message body is to be activated.
摘要:
Disclosed is an ultrasonic cleaning system for removing a high dose ion-implanted photoresist in supercritical carbon dioxide. Specifically, the ultrasonic cleaning system includes one or more ultrasonic horns mounted inside a high pressure reactor to be operated in supercritical carbon dioxide and having a cross-section enabling uniform processing of an overall surface of a wafer, so that ultrasonic waves can be superposed in the high pressure reactor and uniformly distributed over the surface of a support provided as a cleaning target in a cleaning bath, thereby minimizing damage to a fine pattern on the surface of the support while effectively removing a high dose ion-implanted photoresist.