다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

[신간의 별자리x] 우리/미술, 그리고 ‘슬픔의 박물관’

Deposits of clastic carbonate-dominated (calciclastic) sedimentary slope systems in the rock record have been identified mostly as linearly-consistent carbonate apron deposits, even though most ancient clastic carbonate slope deposits fit the submarine fan systems better. Calciclastic submarine fans are consequently rarely described and are poorly understood. Subsequently, very little is known especially in mud-dominated calciclastic submarine fan systems. Presented in this study are a sedimentological core and petrographic characterisation of samples from eleven boreholes from the Lower Carboniferous of Bowland Basin (Northwest England) that reveals a >250 m thick calciturbidite complex deposited in a calciclastic submarine fan setting. Seven facies are recognised from core and thin section characterisation and are grouped into three carbonate turbidite sequences. They include: 1) Calciturbidites, comprising mostly of highto low-density, wavy-laminated bioclast-rich facies; 2) low-density densite mudstones which are characterised by planar laminated and unlaminated muddominated facies; and 3) Calcidebrites which are muddy or hyper-concentrated debrisflow deposits occurring as poorly-sorted, chaotic, mud-supported floatstones. These

Phd by thesis

Ju Mei,†,‡,∥ Nelson L. C. Leung,†,‡,∥ Ryan T. K. Kwok,†,‡ Jacky W. Y. Lam,†,‡ and Ben Zhong Tang*,†,‡,§ †HKUST-Shenzhen Research Institute, Hi-Tech Park, Nanshan, Shenzhen 518057, China ‡Department of Chemistry, HKUST Jockey Club Institute for Advanced Study, Institute of Molecular Functional Materials, Division of Biomedical Engineering, State Key Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China Guangdong Innovative Research Team, SCUT-HKUST Joint Research Laboratory, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China

Aggregation-Induced Emission: Together We Shine, United We Soar!

Luminogenic materials with aggregation-induced emission (AIE) attributes have attracted much interest since the debut of the AIE concept in 2001. In this critical review, recent progress in the area of AIE research is summarized. Typical examples of AIE systems are discussed, from which their structure–property relationships are derived. Through mechanistic decipherment of the photophysical processes, structural design strategies for generating new AIE luminogens are developed. Technological, especially optoelectronic and biological, applications of the AIE systems are exemplified to illustrate how the novel AIE effect can be utilized for high-tech innovations (183 references).

Aggregation-induced emission

One-dimensional micro-scale patterned conjugated polymer structures in bilayer architecture and light emitting diode application

Liquid Crystalline Rylenediimides with Highly Order Smectic Layer Structure as a Floating Gate for Multiband Photoresponding Photonic Transistor Memory

We report a new host material for iridium complex light-emitting devices, poly(4,4′-dicyano-4″-vinyl-triphenylamine) (PCNVTPA), which was synthesized by nitroxide-mediated free radical polymerization. The incorporation of electron-withdrawing cyano groups led to a significant variation in electronic energy levels and luminescence characteristics in comparison with the parent poly(4-vinyltriphenylamine) (PVTPA). The prepared organosoluble PCNVTPA and PVTPA had number-average molecular weights (Mn) of 10 200 and 23 400, respectively. PCNVTPA exhibited higher thermal stability (Tg=211 °C) and photoluminescence (PL) quantum efficiency (PLQY) (20%) compared with PVTPA (Tg=140 °C, PLQY=3%) because of enhanced rigidity from the cyano-substituted group. Cyano substitution also led to lower energy levels (HOMO, LUMO, unit: eV) in PCNVTPA (−5.63, −2.52) than in PVTPA (−5.35, −1.89). The emission peak of the Ir complexes was observed in the PL spectra of PVTPA or PCNVTPA/Ir complex blend through efficient energy transfer from the host polymer to the guest Ir complex. Single-layer phosphorescent electroluminescent devices of indium-tin oxide/PEDOT:PSS/PCNVTPA:Ir complexes/Ca:Al showed maximum luminance (2899 cd m−2) and luminance efficiency (8.84 cd A−1), respectively, which were much higher than those of PVTPA. Such an improvement was probably due to the more efficient hole trapping in Ir complexes by the lower HOMO level or better electron injection from the lower LUMO level of PCNVTPA. The results suggested that the new PCNVTPA could be a good host polymer for the electrophosphorescent device. A new host material, PCNVTPA, was successfully synthesized for high-performance iridium complex light-emitting devices. Efficient energy transfer was observed from the host PCNVTPA to the guest Ir complex. Single-layer phosphorescent electroluminescent devices of ITO/PEDOT: PSS/PCNVTPA:Ir complexes/Ca:Al exhibited maximum luminance (2899cdm−2) and luminance efficiency (8.84 cd A−1), respectively, which were much higher than those of PVTPA. Such an improvement was probably due to more efficient hole trapping in Ir complexes or better electron injection from the lower energy levels of PCNVTPA.

New poly(4,4′-dicyano-4″-vinyl-triphenylamine) host material for single-layer Ir complex phosphorescent light-emitting devices

Diagnosis of multiple hold-time and setup-time faults in scan chains

The average diffusion coefficients (Davg) of three acrylic monomers methyl methacrylate (MMA), butyl methacrylate (BtMA) and cyclohexyl methacrylate (ChMA) in poly(methyl methacrylate) (PMMA) were measured by the thermogravimetric (TGA) technique. The measured Davg values were in the range of (0.2∼105.7) × 10−7 for a PMMA solid content of 10∼50% and a temperature range of 323∼353 K. It was found that the solid content of PMMA, the molar volume of the acrylic monomer and the temperature significantly affected the Davg values. A large decrease in the Davg value was found at the 50% PMMA solid content for all three acrylic monomers. The order of the Davg value for MMA, BtMA, and ChMA was MMA > BtMA > ChMA due to an increasing molar volume. The Davg value was significantly increased with an increasing temperature, especially at a low PMMA solid content. The measured Davg value can be used for predicting the refractive index distribution of gradient-index polymer optical fibers.

Wen-Chang Chen

Papers

One-dimensional micro-scale patterned conjugated polymer structures in bilayer architecture and light emitting diode application

Liquid Crystalline Rylenediimides with Highly Order Smectic Layer Structure as a Floating Gate for Multiband Photoresponding Photonic Transistor Memory

New poly(4,4′-dicyano-4″-vinyl-triphenylamine) host material for single-layer Ir complex phosphorescent light-emitting devices

Diagnosis of multiple hold-time and setup-time faults in scan chains

Diffusion coefficients of acrylic monomers in poly(methyl methacrylate)