The Catholic University of Korea Industry-academic Cooperation Foundation

Sk Microworks Co., Ltd.

Ecovance Co. Ltd.

Sk Pucore Co., Ltd.

Joo Young Jung

Tae Suk Suh

Do Kun Yoon

Ji Yeon Ryu

Hoon Tae Kim

Jin Woo Lee

Dae Seong Oh

Jung Hwan Myung

Hyuk Hee Han

Han Jun Kim

Heung Sik Kim

Sun Hwan Kim

Kyung Youn Kim

Seong Dong Kim

Myung Ok Kyun

Jun Su Byeon

Kyeong Hwan You

Jae Young Pai

Jeong Moo Kim

A polythiol composition according to exemplary embodiments includes a first polythiol compound which provides a maximum peak in a high performance liquid chromatography (HPLC) analysis graph obtained at a wavelength of 230 nm, and a second polythiol compound having a molecular weight greater than that of the first polythiol compound and represented by CHS. A ratio of a peak area of the second polythiol compound to a peak area of the first polythiol compound, which are measured through the HPLC analysis graph at the wavelength of 230 nm, is 0.05 to 5.0%.

Polythiol composition, optical composition, and optical product

The embodiments relate to a polyamide-based film excellent in optical properties such as transmittance, haze, and yellow index and mechanical properties such as modulus and thickness uniformity, to a process for preparing the same, and to a cover window and a display device comprising the same. The polyamide-based film comprises a polyamide-based polymer and has an XRD pattern comprising a first peak whose highest point is located in a section where 2θ is 14° to 16°.

Polyamide-based film, preparation method thereof, and cover window and display device comprising same

An eco-friendly biodegradable polyester resin composition includes: a polyester resin including a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid; and 5000 ppm to 20000 ppm of a hydrophilic regulator having a molecular weight of 400 to 1300.

Biodegradable polyester resin composition and biodegradable polyester molded article including the same

A respiratory gating system is disclosed that varies the orientation of a radiation emitting device according to a patient's natural breathing. A breathing respirator is provided that allows the patient's respiration amount to be measured. External markers are adhered to triangulation points around a radiation target region, such as a heart, of the patient. An image diagnosis device images the target region. A computed tomography device reveals movements of the target region caused by the respiration. Triangulations and polynomial approximations are used to estimate the trajectory of the target region in real time. Position coordinates derived from the estimated trajectory are transmitted to the radiation emitting device. The system increases the accuracy and stability of the entire radiation therapy result.

Respiratory gating system for patient using natural breathing method during radiation therapy, and method for emitting radiation thereby

A radiation treatment collimator having a multilayered linkage structure, the collimator providing various shapes of spaces to form an irradiation area transmitting radioactive rays therethrough, the collimator comprising: a fixed frame disposed on a plate; multiple pixel board layers fixedly stacked at predetermined intervals on top of each other inside the fixed frame, each pixel board layer being configured in a lattice form and having pixel covers disposed correspondingly to the respective lattices in such a manner as to be open and closed individually; control units disposed on both sides of the fixed frame to individually control the operations of the pixel covers of the pixel board layers; and power source units disposed on the front and rear sides of the fixed frame to supply the pixel board layers with operating power.

Radiation treatment collimator having multilayered linkage structure

A collimator for flow pixel proton therapy providing an irradiation region which controls an intensity of an irradiated proton, including micro-motors arranged at both sides of a main frame connected, one to one, to multiple spread panels arranged in a center opening of the main frame by a corresponding ones of multiple elastic reels, in which a first half of the spread panels are moved to a first side of the main frame and a second half of the spread panels are moved to a second side of the main frame by the opposite micro-motors when a corresponding elastic reel is wound by a corresponding micro-motor, and in which each spread panel is in a stress release state when the corresponding elastic reel is unwound.

Collimator for flow pixel proton therapy

The present invention relates to a voxel-type block phantom for a multifunctional radiation measurement apparatus. A phantom, for adjusting an amount of radiation, has solid pixel blocks, having a radiation measuring device equipped therein and different media and densities from one another, assembled on top of one another so as to be assembled into a 3-dimensional voxel, wherein the phantom is formed by placing a solid block which is appropriate for a density that corresponds to each pixel of the 3-dimensional voxel. An inspector can personally and instantly customize a phantom that is appropriate for a subject to be measured and thus can obtain an accurate measurement value.

Voxel type block phantom for a multifunctional radiation measurement apparatus

Growing community of inventors

Gyeonggi-do, South Korea

Joo Young Jung