Abstract: The invention relates to: a hybrid supported metallocene catalyst includes at least one first metallocene compound among the compounds represented by chemical formula 1, at least one second metallocene compound among the compounds represented by chemical formula 2 and a cocatalyst compound; a method for preparing an ethylene-?-olefin copolymer, comprising polymerizing olefin monomers in the presence thereof; and an ethylene-?-olefin copolymer having improved melt strength.

Abstract: The present invention relates to a novel group 4 transition metal compound, a method for preparing the compound, a catalyst composition containing the compound, and a method for preparing a polyolefin, comprising a step for forming a polymerization reaction of olefin monomers in the presence of the catalyst composition. The group 4 transition metal compound of the present invention exhibits an excellent catalytic activity and has excellent thermal stability in a polyolefin synthesis reaction, and thus can be used even in a polyolefin synthesis reaction at a high temperature. In addition, the compound of the present invention can be advantageously used in the synthesis process of grade-controlled polyolefin since the weight average molecular weight of the synthesized polyolefin and the octane content in the polymer can be adjusted by varying the kinds of center metal and ligand.

Abstract: A method and an apparatus for distinguishing radionuclides are disclosed. The method comprises the steps of: receiving energy generated in one or more radioactive elements; applying energy as a weight for each channel to spectrum of the received energy; and distinguishing the one or more radioactive elements on the basis of the spectrum of the spectrum to which the weight is applied. A radioactive element having an energy value corresponding to a peak value of the spectrum of the energy to which the weight is applied, as an energy value of a Compton edge, is distinguished as the one or more radioactive elements. According to the present invention, it is possible to more accurately monitor radiation even while using a plastic scintillator, and further to improve energy resolution of a plastic scintillator.

Abstract: A timing controller includes an image determining part configured to determine whether an input image is a static image based on input image data, a signal controller configured to shift a timing of a first data enable signal to generate a second data enable signal when the input image is the static image, and a signal generator configured to generate control signals based on the second data enable signal.

Abstract: A flip-flop generates a first feedback signal using a signal generated inside the flip-flop. The flip-flop includes a first stage circuit, a second stage circuit and a third stage circuit. The first stage circuit receives a first data signal and a clock signal and generates a first internal signal through a first node. The second stage circuit receives the first internal signal, the clock signal, and the first feedback signal and generates a second internal signal through a second node. The third stage circuit generates a second data signal by latching the second internal signal when the clock signal is at a first level, using the second internal signal and the clock signal. The second stage circuit cuts off at least one first current path between the second node and a power supply, based on the first feedback signal, when the clock signal is at a second level.

Abstract: A semiconductor circuit includes a first circuit, a second circuit, a third circuit, and a fourth circuit. The first circuit determines a value of a first node based on a voltage level of a clock signal, and a voltage level of an enable signal or a voltage level of a scan enable signal. The second circuit determines a value of a second node based on the voltage levels of the first node and the clock signal. The third circuit determines a value of a third node based on a voltage level of the second node. The fourth circuit determines a value of a fourth node based on the voltage levels of the second node and the clock signal. The third circuit includes a first transistor and a second transistor connected in series with each other and gated to the voltage level of the second node to determine the value of the third node. The fourth circuit includes a third transistor that is gated to the voltage level of the clock signal to electrically connect the third node and the fourth node.

Abstract: A semiconductor circuit includes a first circuit, a second circuit, a third circuit, and a fourth circuit. The first circuit determines a value of a first node based on a voltage level of a clock signal, and a voltage level of an enable signal or a voltage level of a scan enable signal. The second circuit determines a value of a second node based on the voltage levels of the first node and the clock signal. The third circuit determines a value of a third node based on a voltage level of the second node. The fourth circuit determines a value of a fourth node based on the voltage levels of the second node and the clock signal. The third circuit includes a first transistor and a second transistor connected in series with each other and gated to the voltage level of the second node to determine the value of the third node. The fourth circuit includes a third transistor that is gated to the voltage level of the clock signal to electrically connect the third node and the fourth node.

Abstract: The present invention relates to a novel group 4 transition metal compound, a method for preparing the compound, a catalyst composition containing the compound, and a method for preparing a polyolefin, comprising a step for forming a polymerization reaction of olefin monomers in the presence of the catalyst composition. The group 4 transition metal compound of the present invention exhibits an excellent catalytic activity and has excellent thermal stability in a polyolefin synthesis reaction, and thus can be used even in a polyolefin synthesis reaction at a high temperature. In addition, the compound of the present invention can be advantageously used in the synthesis process of grade-controlled polyolefin since the weight average molecular weight of the synthesized polyolefin and the octane content in the polymer can be adjusted by varying the kinds of center metal and ligand.

Abstract: Provided is a semiconductor device including low power retention flip-flop. The semiconductor device includes a first line to which a global power supply voltage is applied, a second line to which a local power supply voltage is applied, the second line being separated from the first line, a first operating circuit connected to the second line to use the local power supply voltage, a first power gating circuit determining whether the local power supply voltage is applied to the first operating circuit and a first retention flip-flop connected to the first line and the second line, wherein the first retention flip-flop comprises a first circuit including a master latch, a second circuit including a slave latch, and a first tri-state inverter connected between the master latch and the slave latch.

Abstract: The present disclosure relates to a method for inducing pluripotent stem cells by inducing reprogramming and/or dedifferentiation of differentiated adult cells using shikimic acid, a plant extract or plant stem cells containing shikimic acid and an extract of dedifferentiated stem cells (callus), pluripotent stem cells prepared by the method and a composition containing the pluripotent stem cells. In accordance with the present disclosure, ethical concerns implicated with the use of eggs to prepare pluripotent stem cells such as embryonic stem cell can be resolved. And, because the plant stem cell extract unharmful to human is used, pluripotent stem cells with proven safety can be prepared and they may be used to develop immunocompatible cell therapy agents suited for individuals. In addition, by pluripotent stem cells from individuals having diseases, the present disclosure will be very useful in studying the cause of diseases and devolving therapeutic strategy.

Abstract: A timing controller includes an image determining part configured to determine whether an input image is a static image based on input image data, a signal controller configured to shift a timing of a first data enable signal to generate a second data enable signal when the input image is the static image, and a signal generator configured to generate control signals based on the second data enable signal.

Abstract: A display apparatus includes: a panel including a plurality of pixels configured to display an image; an ambient light sensor configured to sense an illumination level of ambient light and to generate ambient light data; a gamma controller configured to control sections of a reference gamma curve based on the ambient light data to generate a controlled gamma curve, the controlled gamma curve defining output data according to input data; a data driver configured to convert an image signal into a data voltage based on the controlled gamma curve and to supply the data voltage to the pixels; and a gate driver configured to supply a gate signal to the pixels.

Abstract: A method of displaying a stereoscopic image provides first light having a first wavelength and second light having a second wavelength different from the first wavelength to the a display panel according to left-eye and right-eye images displayed on the display panel. Color correcting data are generated by correcting at least one of left-eye color data corresponding to the left-eye image and right-eye color data corresponding to the right-eye image such that a first color coordinate according to the first light and a second color coordinate according to the second light coincide with each other with respect to the same color. The left-eye and right-eye images are displayed using light having wavelengths different from each other, so that a display quality of the stereoscopic image may be enhanced.

Abstract: Provided are semiconductor circuits. A semiconductor circuit includes: a first circuit configured to propagate a value of a first node to a second node based on a voltage level of a clock signal; a second circuit configured to propagate a value of the second node to a third node based on the voltage level of the clock signal; and a third circuit configured to determine a value of the third node based on a voltage level of the second node and the voltage level of the clock signal, wherein the first circuit comprises a first transistor gated to a voltage level of the first node, a second transistor connected in series with the first transistor and gated to the voltage level of the third node, and a third transistor connected in parallel with the first and second transistors and gated to a voltage level of the clock signal to provide the value of the first node to the second node.

Abstract: The present disclosure relates to a method for inducing pluripotent stem cells by inducing reprogramming and/or dedifferentiation of differentiated adult cells using shikimic acid, a plant extract or plant stem cells containing shikimic acid and an extract of dedifferentiated stem cells (callus), pluripotent stem cells prepared by the method and a composition containing the pluripotent stem cells. In accordance with the present disclosure, ethical concerns implicated with the use of eggs to prepare pluripotent stem cells such as embryonic stem cell can be resolved. And, because the plant stem cell extract unharmful to human is used, pluripotent stem cells with proven safety can be prepared and they may be used to develop immunocompatible cell therapy agents suited for individuals. In addition, by pluripotent stem cells from individuals having diseases, the present disclosure will be very useful in studying the cause of diseases and devolving therapeutic strategy.

Abstract: A liquid crystal display includes a signal controller to generate a plurality of start pulse signals based on a plurality of eye blinking signals during a predetermined mode of operation. The start pulse signals are generated in a manner different from a vertical synchronization signal. The start signals may be generated to have an irregular spacing which corresponds to the blinking signals, which may be different from a constant spacing used during display of moving images. The predetermined mode may be a still image mode.

Abstract: A display device includes: a similar gray level block detector configured to detect a pixel data block in which a gray level difference between a plurality of pixel data included in an image signal is smaller than or equal to a threshold; a skin tone detector configured to detect the pixel data block including a skin tone; and a gamma processor configured to apply a first gamma to a plurality of pixel data included in the pixel data block when the pixel data block does not include the skin tone and apply a second gamma to the plurality of pixel data included in the pixel data block when the pixel data block includes the skin tone.

Abstract: A timing controller for a display device and a method for driving the same, wherein the timing controller comprises a first controller providing a driving frequency change signal for changing a first driving frequency to a second driving frequency that is different from the first driving frequency and a second controller receiving the driving frequency change signal and generating a scan start signal corresponding to the second driving frequency, the second controller outputting a changed scan start signal in response to sensing a blink of an eye of a user.

Abstract: In a method of driving a display panel, a first data voltage having a first potential difference with respect to a reference voltage is outputted to pixel units of the display panel during a first frame which the data voltage has a same polarity with respect to the reference voltage as a data voltage of a following frame, and a second data voltage having a second potential difference less than the first potential difference is output to pixel units of the display panel during a second frame in which the data voltage has a polarity with respect to the reference voltage that is reversed with respect to a data voltage of a following frame.

Abstract: The present disclosure provides a cosmetic composition which includes at least one of Scutellaria baicalensis essence, licorice essence, and mixture of Scutellaria baicalensis extract and licorice extract as active ingredient and, optionally, further includes at least one of zinc pyrithione, panthenol and thuja semen extract. The cosmetic composition of the present disclosure is capable of inhibiting hair loss and enhancing hair growth by inhibiting binding with the androgen receptor and regulating the hair growth factor so as to induce transition from telogen to anagen and prolong anagen.