Electronics and Telecommunications Research Institute

Lg Chem, Ltd

Korea Institute of Machinery & Materials

Lg Energy Solution, Ltd.

Yong Jin Kim

Jong Hun Kim

Kyoung Shil Oh

Kun Ji Kim

Kyung Hyun Kim

Myung Ki Shin

Kyung Seog Youk

Chung Gu Kang

Hyun Min Lee

Heung Kwon Bae

Jung Rae Lee

Jae Hoon Choi

Hi Deok Lee

Chel Jong Choi

Hee Young Jung

Jung Soo Park

Jun Kyu Park

Yong Woon Kim

Seok Joo Koh

Chang Song Lee

Jin Ki Han

Soon Cheon Hwang

Kyung Rok Cho

Byoung Moon Jin

Jang Kyung Kim

In Chan Choi

Bang Woo Han

Jae Kwang Jung

Sang Eun Jun

Sae Eun Lee

Seung Jae Won

David Kim

Disclosed is a method of preparing a vinyl chloride based resin by suspension polymerization to prevent foaming by slowly elevating reaction temperature such that pressure is maintained when pressure drops in a late stage of reaction. According to the method, the vinyl chloride based resin is prepared using suspension polymerizing vinyl chloride based monomers so as to reduce foaming and improve a protrusion, thermal stability and the like.

Method for preparing vinyl chloride-based resin by using suspension polymerization

The present invention relates to a method of preparing a vinyl chloride polymer having good thermal stability due to the restraint of dehydrochlorination by heat or ultraviolet rays, and a vinyl chloride polymer prepared thereby. In the preparation method, a modifier is introduced at the end of a polymerization process to impart the vinyl chloride polymer with high thermal stability without inducing modification. Therefore, the generation of dehydrochlorination due to heat or ultraviolet rays may be markedly restrained, thermal stability may be improved, and discoloration or the modification of physical properties may be prevented in the vinyl chloride polymer thus prepared.

Vinyl chloride polymer and preparation method thereof

An apparatus treats harmful particulate matter generated through combustion. The apparatus includes a concentrator concentrating the harmful particulate matter and a plasma generator burning the concentrated harmful particulate matter. Thereby, the harmful particulate matter can be efficiently removed.

Apparatus for treating exhaust particulate matter

Disclosed is a method for defoaming a vinyl chloride resin slurry. The agent of the present invention may prevent generation of Fish eyes and deteriorate in production efficiency caused by slurry foams without inhibiting inherent transparency of vinyl chloride resins, in the process of preparing the vinyl chloride resins by polymerizing a monomer mixture containing vinyl chloride as a main component in a polymerization reactor.

Method for defoaming a vinyl chloride resin slurry

Disclosed is an antifoaming agent for vinyl chloride resin slurry. The agent of the present invention may prevent generation of Fish eyes and deteriorate in production efficiency caused by slurry foams without inhibiting inherent transparency of vinyl chloride resins, in the process of preparing the vinyl chloride resins by polymerizing a monomer mixture containing vinyl chloride as a main component in a polymerization reactor.

Antifoaming agent for vinyl chloride resin slurry

There is provided a method for transmitting data to a multicast group including a plurality of receivers by using an X-cast mode, comprising the steps of transmitting an X-cast IP data packet having a X-cast header including addresses of a destination router and the multicast group, wherein the destination router is connected to the receivers, converting the X-cast IP data packet to a multicast IP data packet in the destination router and sending the multicast IP data packet to the receivers, wherein an IP header of the multicast IP data has the address of the multicast group. The source router can transmit an IP data packet to a multicast group having a medium or large number of receivers by using the X-cast mode.

Method for transmitting data by using X-cast mode

Provided is a semiconductor device and a manufacturing method thereof. The method includes the steps of: forming a thin film transistor including a substrate having a semiconductor layer and silicon, a gate insulation layer formed on the semiconductor layer, a gate electrode formed on the gate insulation layer, and source and drain regions formed in the semiconductor layer; forming a first metal layer on the substrate having the semiconductor layer and the gate electrode; forming a second metal layer on the first metal layer; forming a third metal layer on the second metal layer; forming a nitride layer on the third metal layer; and annealing the substrate having the nitride layer, and forming a silicide layer on the gate electrode and the source and drain regions.

Semiconductor device having a silicide layer and manufacturing method thereof

A method for strictly managing group membership in Internet multicast applications is disclosed. The method comprises a group creation and enrollment step, a group announcement step, a group query step, a group information acquisition step, a group registration step, a leaving of the group step, a failure information response step and a fragment message transmission step. In the group creation and enrollment step, a group management server creates a group and performs group registration. In the group announcement step, the group management server announces the created group. In the group query step, the group management client inquires the group information of the group management server. In the group information acquisition step, the group management client joins a known group address and acquires the group information. In the group registration step, the group management client enrolls in the group management server. In the leaving of the group step, the group management client leaves the group. In the failure information response step, the group management server transmits information on a reason for failure to the group management. In the fragment message transmission step, the group management client transmits the fragment messages, while the group management server acquires the group information by assembling the fragment messages.

Method for managing group membership in internet multicast applications

There is provided a coding/decoding system of bit insertion manipulation line code, which has small increase in bit rate and simple configuration and minimizes DC baseline fluctuations by properly coupling the advantages of mBnB code and bit insertion code in a high-speed optical transmission system using AC coupling. The encoding part of the system inserts a bit for minimizing a disparity of m&plus;1 bit block when a disparity with respect to m-bit input information is a minimum value that the m&plus;1 bit block may have, and inserts '0' when it is not, performing pre-coding. Then, the encoding part manipulates a part of the bits of the pre-coded block to make its disparity have the minimum value, compares the disparity of the pre-coded block with a disparity accumulated, and inverts or non-inverts the block, thus carrying out coding. The decoding part removes the insertion bit from the coded information, inverts the block again when it is inverted during the encoding, and performs a manipulation opposite to the bit manipulation, thus executing decoding.

Coding/decoding system of bit insertion/manipulation line code for high-speed optical transmission system

A multiple access control method for guaranteeing a QoS requirement is disclosed. The method includes the steps of a first step in which the random access channel is separated into a plurality of sub-slots, and one of the thusly separated sub-channels is designated as a forced collision sub-slot and is shared for a mobile station which is sensitive to a reservation delay time, and a second step in which capacity-back (CB) sub-slots are designated one-by-one with respect to the mobile station, which is sensitive to the reservation delay time in the next slot when a collision occurs in the designated forced sub-slot and a reservation request is performed without a predetermined competition.

Multiple access control method for guaranteeing QOS requirement

Growing community of inventors

Daejeon, South Korea

Yong Jin Kim