1,033 research outputs found
A 1-GHz Digital PLL With a 3-ps Resolution Floating-Point-Number TDC in a 0.18-mu m CMOS
No full textA new concept of floating-point-number representation is implemented in a time-to-digital converter (TDC), which adaptively scales its resolution according to the amount of input difference. With a fixed 6-bit significand number, the TDC provides five cases of the exponent (x1, x2, x4, x8, and x16) to indicate the scale information. A digital phase-locked loop (PLL) with the TDC is implemented in a 0.18-mu m CMOS. The TDC shows the minimum resolution of 3 ps with a total conversion range of 3.5 ns, the maximum operating frequency of 80 MHz, and the power consumption of 18 mW at 75 MHz. The PLL shows a lock range of 0.9-1.25 GHz and a root-mean-square jitter of 3.5 ps at 1.2 GHz.X111516sciescopu
형광단 신호의 반복적 미혼합을 통한 생체 분자의 다중화된 이미징을 위한 방법과 장치
No full textThe present disclosure provides a method and apparatus for biomolecular multiplexed imaging through the iterative unmixing of fluorophores. According to the first embodiments of the present disclosure, although signals of two fluorophores are detected in the first fluorescent detection spectral range, the signals of the two images obtained from two detection spectral ranges can be unmixed through the iterative minimization of mutual information. Furthermore, the present disclosure provides a multi-color unmixing method and apparatus through the iterative minimization of mutual information. In the second embodiments of the present disclosure, a plurality of images of a plurality of fluorophores marking different biomolecules, respectively, for example, N fluorophores are obtained. Images, each containing the signals of single fluorophore can be obatined from the obtained images while minimizing the mutual information shared by images of each of pairs each consisting of two of the obtained images
반복색분리를 통한 분자 다중 이미징 기법
No full textThe present disclosure provides a method and apparatus for biomolecular multiplexed imaging through the iterative unmixing of fluorophores. According to the first embodiments of the present disclosure, although signals of two fluorophores are detected in the first fluorescent detection spectral range, the signals of the two images obtained from two detection spectral ranges can be unmixed through the iterative minimization of mutual information. Furthermore, the present disclosure provides a multi-color unmixing method and apparatus through the iterative minimization of mutual information. In the second embodiments of the present disclosure, a plurality of images of a plurality of fluorophores marking different biomolecules, respectively, for example, N fluorophores are obtained. Images, each containing the signals of single fluorophore can be obatined from the obtained images while minimizing the mutual information shared by images of each of pairs each consisting of two of the obtained images
Reversible control of in-gap states f『om surface oxygen vacancies in perovskite stannates with ultraviolet light
No full text1
반복색분리를 통한 분자 다중 이미징 기법
No full textThe present disclosure provides a method and apparatus for biomolecular multiplexed imaging through the iterative unmixing of fluorophores. According to the first embodiments of the present disclosure, although signals of two fluorophores are detected in the first fluorescent detection spectral range, the signals of the two images obtained from two detection spectral ranges can be unmixed through the iterative minimization of mutual information. Furthermore, the present disclosure provides a multi-color unmixing method and apparatus through the iterative minimization of mutual information. In the second embodiments of the present disclosure, a plurality of images of a plurality of fluorophores marking different biomolecules, respectively, for example, N fluorophores are obtained. Images, each containing the signals of single fluorophore can be obatined from the obtained images while minimizing the mutual information shared by images of each of pairs each consisting of two of the obtained images
Improvement of Cu2ZnSnS4 Solar Cell Characteristics with Zn(O-x,S1-x) Buffer Layer
No full textThis experiment investigated characteristic changes in a Cu2ZnSnS4 (CZTS) solar cell by applying a Zn (O-x, S1-x) butter layer with various compositions on the upper side of the absorber layer. Among the four single layers such as Zn(O-0.76, S-0.24), Zn(O-0.56, S-0.44), Zn(O-0.33, S-0.67), and Zn(O-0.17, S-0.83), the Zn(O-0.76, S-0.24) buffer layer was applied to the device due to its bandgap structure for suppressing electron-hole recombination. In the application of the Zn(O-0.76, S-0.24) buffer layer to the device, the buffer layer in the device showed the composition of Zn(O-0.7, S-0.3) because S diffused into the buffer layer from the absorber layer. The Zn(O-0.7, S-0.3) buffer layer, having a lower energy level (E-V) than a CdS buffer layer, improved the J(SC) and V-OC characteristics of the CZTS solar cell because the Zn(O-0.7, S-0.3) buffer layer effectively suppressed electron-hole recombination. A substitution of the CdS buffer layer by the Zn(O-0.7, S-0.3) buffer layer improved the efficiency of the CZTS solar cell from 2.75% to 4.86%.1
UO2 핵연료로 부터의 과도상태 핵분열기체 방출 예측용 현상론적 모형
No full text학위논문(박사) - 한국과학기술원 : 원자력공학과, 1992.8, [ xi, 97 p. ]A mechanistic model named KFGR-T has been developed to predict transient fission gas release from fuel by emphasizing the importance of non-equilibrium behavior of fission gas bubbles. It takes into account relevant physical processes generally considered by other workers, and particularly, migration of fission gas bubbles through channels formed by extension of dislocations to grain boundaries during the transient heat-up stage, grain growth/grain-boundary sweeping during the isothermal annealing stage at high temperatures, and gas release through intergranular cracking.
The present model was applied to calculate transient fission gas releases, and the calculated values were compared with the results of out-of pile experiments performed at Harwell, ANL, ORNL and JAERI with fuel base-irradiated to burnups in the range of 18 to 35 MWd/kg-U. The absolute values and trend of fission gas releases calculated with use of the present model were in good agreement with the experimental data.
A parametric study was also made to investigate the sensitivity of the present model to variables such as initial grain size, heating rate, temperature gradient and initial gas concentration, and these results were compared with the sensitivity of other models.한국과학기술원 : 원자력공학과
Theinfluenceofdomainboundariesandcrystallographicorientationsontheexsolutionof Ni-Snnanoparticlesinaperovskitestannate
No full text2
격자 표면위의 액정 박막에서의 전기적 등전위면의 제어
No full textWe report theoretical results for the distortions of electric equi-potential (EEP) planes in a liquid crystal (LC) film in the presence of surface geometrical grating (SGG). A scaled parameter, the ratio of capacitance per unit area of a LC to that of SGG, is introduced into a simple model to predict the distortions of EEP planes. It is found that the distortions of EEP planes are enhanced by increasing the spatial variations of this scaled parameter inside LC cell. These spatial variations naturally induce the spatially periodic deformations of the LC director which can be employed as a voltagecontrolled optical grating
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