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Wei-Tsung Chuang,Rong-Hao Guo,Che-Min Chou,Chun-Chieh Wang,Ming-Jay Deng,Jhih-Min Lin,Chun-Yu Chen,Yao-Chang Lee 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2
To meet future demands for cutting-edge wearable electronics, flexible supercapacitors must possess many features, such as eco-friendly processing, aesthetic appeal and no health hazards, in addition to have lightweight, robust and excellent cycling stability. We proposed a biomimetic and scalable method to fabricate an all-solid-state flexible supercapacitor (assFSC) using bioinspired clay/polymer nanocomposites as electrode materials and a gel electrolyte. Experimental results from X-ray techniques (tomography, scattering and diffraction) showed that the electrode’s structure features a 3D ant-nest-like framework composed of 2D nacre-like clay nanosheets, i.e. hierarchical layers-within-networks structure. Accordingly, the structural electrodes exhibit high tensile strength of 62 MPa, Young’s modulus of 4.4 GPa, and torsional strength of 165 MPa. Under a large operating potential of 4.0 V, the assFSC exhibited ultrahigh energy density (233.3 W h kg<SUP>-1</SUP> at 2 kW kg<SUP>-1</SUP>), ultrahigh power density (125 kW kg<SUP>-1</SUP> at 55.5 W h kg<SUP>-1</SUP>), and outstanding static cyclability (less than 10% loss after 5,000 cycles). We also performed a cycle-life test under dynamic deformation and demonstrated that the assFSC had charging and discharging abilities during motion, according to particle applications of wearable electronics. Thus stable and superior electrochemical performance can be attributed to the biomimetic layers-within-networks structure, which not only provided robust framework but also induced 3D conducting networks with increasing ion channels and shortening charge transports. The shapeable electrodes made by a molding process could, therefore, be used to meet the demands for fashionable, wearable electronics.
Chuang Wei-Tsung,Jeng U-Ser,Sheu Hwo-Shuenn,Hong Po-Da The Polymer Society of Korea 2006 Macromolecular Research Vol.14 No.1
We conducted simultaneous, small-angle, X-ray scattering/differential scanning calorimetry (SAXS/DSC) and simultaneous, wide-angle, X-ray scattering (WAXS)/DSC measurements for a polymer blend of poly($\varepsilon$-caprolactone)/poly(ethylene glycol)(PCL/PEG). The time-dependent SAXS/DSC and WAXS/DSC results, measured while the system was quenched below the melting temperature of PCL from a melting state, revealed the competitive behavior between liquid-liquid phase separation and crystallization in the polymer blend. The time-dependent structural evolution extracted from the SAXS/WAXS/DSC results can be characterized by the following four stages in the PCL crystallization process: the induction (I), nucleation (II), growth (III), and late (IV) stages. The influence of the liquid-liquid phase separation on the crystallization of PCL was also observed by phase-contrast microscope and polarized microscope with 1/4$\lambda$ compensator.
Rosmarinus officinalis Extract Suppresses Propionibacterium acnes–Induced Inflammatory Responses
Tsung-Hsien Tsai,Lu-Te Chuang,Tsung-Jung Lien,Yau-Rong Liing,Wei-Yu Chen,Po-Jung Tsai 한국식품영양과학회 2013 Journal of medicinal food Vol.16 No.4
Propionibacterium acnes is a key pathogen involved in the progression of acne inflammation. The development of a new agent possessing antimicrobial and anti-inflammatory activity against P. acnes is therefore of interest. In this study, we investigated the inhibitory effect of rosemary (Rosmarinus officinalis) extract on P. acnes–induced inflammation in vitro and in vivo. The results showed that ethanolic rosemary extract (ERE) significantly suppressed the secretion and mRNA expression of proinflammatory cytokines, including interleukin (IL)-8, IL-1β, and tumor necrosis factor-α in P. acnes–stimulated monocytic THP-1 cells. In an in vivo mouse model, concomitant intradermal injection of ERE attenuated the P. acnes–induced ear swelling and granulomatous inflammation. Since ERE suppressed the P. acnes–induced nuclear factor kappa-B (NF-κB) activation and mRNA expression of Toll-like receptor (TLR) 2, the suppressive effect of ERE might be due, at least partially, to diminished NF-κB activation and TLR2-mediated signaling pathways. Furthermore, three major constituents of ERE, carnosol, carnosic acid, and rosmarinic acid, exerted different immumodulatory activities in vitro. In brief, rosmarinic acid significantly suppressed IL-8 production, while the other two compounds inhibited IL-1β production. Further study is needed to explore the role of bioactive compounds of rosemary in mitigation of P. acnes–induced inflammation.
Hsu-Heng Yen,Jia-Feng Wu,Horng-Yuan Wang,Ting-An Chang,Chung-Hsin Chang,Chen-Wang Chang,Te-Hsin Chao,Jen-Wei Chou,Yenn-Hwei Chou,Chiao-Hsiung Chuang,Wen-Hung Hsu,Tzu-Chi Hsu,Tien-Yu Huang,Tsung-I Hung 대한장연구학회 2024 Intestinal Research Vol.22 No.3
Ulcerative colitis (UC) is a chronic inflammation of the gastrointestinal tract and is characterized by alternating periods of inflammation and remission. Although UC incidence is lower in Taiwan than in Western countries, its impact remains considerable, demanding updated guidelines for addressing local healthcare challenges and patient needs. The revised guidelines employ international standards and recent research, emphasizing practical implementation within the Taiwanese healthcare system. Since the inception of the guidelines in 2017, the Taiwan Society of Inflammatory Bowel Disease has acknowledged the need for ongoing revisions to incorporate emerging therapeutic options and evolving disease management practices. This updated guideline aims to align UC management with local contexts, ensuring comprehensive and context-specific recommendations, thereby raising the standard of care for UC patients in Taiwan. By adapting and optimizing international protocols for local relevance, these efforts seek to enhance health outcomes for patients with UC.
Jia-Feng Wu,Hsu-Heng Yen,Horng-Yuan Wang,Ting-An Chang,Chung-Hsin Chang,Chen-Wang Chang,Te-Hsin Chao,Jen-Wei Chou,Yenn-Hwei Chou,Chiao-Hsiung Chuang,Wen-Hung Hsu,Tzu-Chi Hsu,Tien-Yu Huang,Tsung-I Hung 대한장연구학회 2024 Intestinal Research Vol.22 No.3
Crohn’s disease (CD) is a chronic, fluctuating inflammatory condition that primarily affects the gastrointestinal tract. Although the incidence of CD in Taiwan is lower than that in Western countries, the severity of CD presentation appears to be similar between Asia and the West. This observation indicates the urgency for devising revised guidelines tailored to the unique reimbursement system, and patient requirements in Taiwan. The core objectives of these updated guidelines include the updated treatment choices and the integration of the treat-to-target strategy into CD management, promoting the achievement of deep remission to mitigate complications and enhance the overall quality of life. Given the diversity in disease prevalence, severity, insurance policies, and access to medical treatments in Taiwan, a customized approach is imperative for formulating these guidelines. Such tailored strategies ensure that international standards are not only adapted but also optimized to local contexts. Since the inception of its initial guidelines in 2017, the Taiwan Society of Inflammatory Bowel Disease (TSIBD) has acknowledged the importance of continuous revisions for incorporating new therapeutic options and evolving disease management practices. The latest update leverages international standards and recent research findings focused on practical implementation within the Taiwanese healthcare system.