410 results on '"Pei Chen"'
Search Results
2. Discovery of Dual MER/AXL Kinase Inhibitors as Bifunctional Small Molecules for Inhibiting Tumor Growth and Enhancing Tumor Immune Microenvironment.
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Li, Mu-Chun, Lai, You-Liang, Kuo, Po-Hsien, Reddy, Julakanti Satyanarayana, Chen, Chih-Ming, Manimala, Julakanti, Wang, Pei-Chen, Wu, Ming-Shiem, Chang, Chun-Yu, Yang, Chen-Ming, Lin, Chin-Yu, Huang, Yu-Chen, Chiu, Chun-Hsien, Chang, Ling, Lin, Wen-Hsing, Yeh, Teng-Kuang, Yen, Wan-Ching, and Hsieh, Hsing-Pang
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- 2024
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3. Unraveling the Heat- and UV-Induced Degradation of Mixed Halide Perovskite Thin Films via Surface Analysis Techniques.
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Huang, Pei-Chen, Yang, Ting-Jia, Lin, Chia-Jou, Wang, Man-Ying, and Lin, Wei-Chun
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- 2024
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4. Weight growth velocity and growth outcomes in very-low-birth-weight infants developing major morbidities.
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Sung, Ting-Hsuan, Lin, Chi-Shuo, Jeng, Mei-Jy, Tsao, Pei-Chen, Chen, Wei-Yu, and Lee, Yu-Sheng
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ENTERAL feeding ,INTRAVENTRICULAR hemorrhage ,VERY low birth weight ,INFANTS ,PREMATURE infants ,VELOCITY ,GESTATIONAL age - Abstract
Extrauterine growth restriction (EUGR) is common in very-low-birth-weight-infants and may be associated with poor neurodevelopment. The growth velocity of preterm infants is increasing over decades, but the relationship between growth velocity, EUGR, and morbidities of preterm infants remains unknown. A total of 263 infants born between 2012 and 2020, with birthweight <1500 g and gestational age of 24–33 weeks, were included. Birthweight and weight on day of evaluation point (corrected gestational age 36 weeks or discharged, whenever comes first) were converted to age-specific and gender-specific Z-scores and analyzed by multivariable modeling. The average growth velocity was calculated by the exponential model. Average growth velocity from birth to the evaluation point was 11.8 ± 0.3 g/kg/day. The maximum growth velocity from birth to week 8 postnatal occurred at week 4 postnatal (16.4 ± 0.9 g/kg/day). Infants with smaller birth weight, higher gestational age, and indication of intestinal surgery or those who need more days to achieve full enteral feeding were more favorable to have a weight lower than the 10th centile at the evaluation point. By contrast, most comorbidities of prematurity did not affect either lower age-specific weight Z-scores on the evaluation point or larger change in weight Z-score between birth and evaluation point. EUGR was associated with gestational age and birth weight. Infants with moderate-to-severe bronchopulmonary dysplasia, high-grade intraventricular hemorrhage, or retinopathy of prematurity tend to have slower growth velocity at 3–5 weeks postnatal, but these did not contribute to EUGR. [ABSTRACT FROM AUTHOR]
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- 2024
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5. Training in neuropsychiatry: views of early career psychiatrists from across the world
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Molina-Ruiz, Rosa, Nakagami, Yukako, Mörkl, Sabrina, Vargas, Martin, Shalbafan, Mohammadreza, Chang, Jane Pei-Chen, Rai, Yugesh, Seun-Fadipe, Champion T., Erzin, Gamze, Kazhungil, Firoz, Vidal, Pablo, Brihastami, Sawitri, Yıldızhan, Eren, Maiti, Tanay, Fedotov, Ilya, Rojnic-Palavra, Irena, Horinouchi, Toru, Renganathan, Vasanth, and Pinto da Costa, Mariana
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BackgroundTraining and practice in neuropsychiatry varies across the world. However, little is known about the experiences and opinions of early career psychiatrists (ECPs) across different countries regarding neuropsychiatry.Aims and methodTo investigate neuropsychiatry training experiences, practices and opinions among ECPs across different countries. An online survey was distributed to ECPs in 35 countries across the world.ResultsA total of 522 participants took part in this study. Responses show that neuropsychiatry is integrated to a variable extent in psychiatric training curricula across the world. Most respondents were not aware of the existence of neuropsychiatric training or of neuropsychiatric units. Most agreed that training in neuropsychiatry should be done during or after the psychiatry training period. Lack of interest among specialty societies, lack of time during training, and political and economic reasons are regarded as the main barriers.Clinical implicationsThese findings call for an improvement in the extent and in the quality of neuropsychiatry training across the world.
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- 2024
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6. Efficacy comparison of 21 interventions to prevent retinopathy of prematurity: a Bayesian network meta-analysis of randomized controlled trials
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Zhou, Miao, Duan, Pei-Chen, Li, Dan-Lin, Liang, Jing-Hong, Liang, Gang, Xu, Hua, and Pan, Chen-Wei
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Background: The objective of this study was to evaluate the comparative efficacy of current interventions for the prevention of retinopathy of prematurity (ROP) in premature infants. Methods: A network meta-analysis (NMA) was performed. We searched PubMed, Web of Science, Scopus, Embase, and the Cochrane Library for relevant studies from their inception to May 5, 2022. Publications were eligible for our study if they were randomized controlled trials (RCTs) involving preterm infants at <37 weeks of gestational age and reported the incidence of any-stage ROP treated with the interventions of interest. The overall effect was pooled using the random effects model. Results: We identified 106 RCTs (involving 23894 participants). This NMA showed that vitamin A supplementation markedly reduced the incidence of ROP, in comparison with placebo (odds ratio [OR] = 0.59, 95% credible interval [95% CrI] 0.33, 0.85), fish oil-based lipid emulsion (OR = 0.57, 95% CrI 0.24, 0.90), early erythropoietin (OR = 0.51, 95% CrI 0.34, 0.98), probiotics (OR = 0.48, 95% CrI 0.32, 0.97), and human milk (OR = 0.50, 95% CrI 0.21, 0.78). Vitamin A supplementation has the highest probability of being the best option for reducing the ROP risk compared with the other 20 interventions based on its surface under the cumulative ranking curve (SUCRA) value (SUCRA = 92.50%, 95% CrI 0.71, 1.00). Conclusions: Our findings suggest that among 21 interventions, vitamin A supplementation might be the best method of preventing ROP. This NMA offers an important resource for further efforts to develop preventive strategies for ROP.
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- 2024
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7. Thermally Stable, Recyclable, and Luminescent Coordination Adaptable Network Base on a Tb3+ Complexes Cross-Linker.
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Huang, Qi-Sheng, Zhao, Pei-Chen, Zhao, Zi-Han, and Li, Cheng-Hui
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- 2023
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8. P‐147: Highly Efficient Pure Blue ZnSeTe Based Quantum Dot Light Emitting Diodes with Top‐emitting Structure
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Shi, Shuangshuang, Jiang, Maocheng, Feng, Jingwen, Li, Dong, Pei, Chen, Zhou, Li, Chen, Zhuo, Li, Yanzhao, Li, Xinguo, and Xu, Xiaoguang
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The application of non‐Cd quantum dots in future display technologies is promising due to their environmental friendliness. However, their low efficiency and broad emission linewidth limit their practical usage. Here, we report the fabrication of ZnSeTe quantum dots based blue light emitting diode (QLED) with different amounts of Te doping and top‐emitting structure. By regulating the thickness of the electron transport layer, we achieve electrical and optical balance control in QLED. Ultimately, we obtain a blue QLED with a emission wavelength of 461 nm, a current efficiency of 5.8 cd/A and a pure blue chromaticity coordinates of (0.13, 0.08).
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- 2024
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9. Dependence of NPPS creates a targetable vulnerability in RAS-mutant cancers
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Xia, Rui-xue, Zou, Pei-chen, Xie, Jun-ting, Tang, Ya-bin, Gong, Miao-miao, Fan, Fu, Aihemaiti, Ayinazhaer, Liu, Yu-qing, Shen, Ying, Zhou, Bin-bing S., Zhu, Liang, and Lei, Hui-min
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RAS is the most frequently mutated oncoprotein for cancer driving. Understanding of RAS biology and discovery of druggable lynchpins in RAS pathway is a prerequisite for targeted therapy of RAS-mutant cancers. The recent identification of KRASG12Cinhibitor breaks the “undruggable” curse on RAS and has changed the therapy paradigm of KRAS-mutant cancers. However, KRAS mutations, let alone KRASG12Cmutation, account for only part of RAS-mutated cancers. Targeted therapies for cancers harboring other RAS mutations remain the urgent need. In this study we explored the pivotal regulatory molecules that allow for broad inhibition of RAS mutants. By comparing the expression levels of nucleotide pyrophosphatase (NPPS) in a panel of cell lines and the functional consequence of increased NPPS expression in RAS-mutant cells, we demonstrated that cancer cells with various kinds of RAS mutations depended on NPPS for growth and survival, and that this dependence conferred a vulnerability of RAS-mutant cancer to treatment of NPPS inhibition. RAS-mutant cells, compared with RAS-wildtype cells, bored and required an upregulation of NPPS. Transcriptomics and metabolomics analyses revealed a NPPS-dependent hyperglycolysis in RAS-mutant cells. We demonstrated that NPPS promoted glucose-derived glycolytic intermediates in RAS-mutant cells by enhancing its interaction with hexokinase 1 (HK1), the enzyme catalyzing the first committed step of glycolysis. Pharmacological inhibition of NPPS-HK1 axis using NPPS inhibitor Enpp-1-IN-1 or HK1 inhibitor 2-deoxyglucose (2-DG), or genetic interfere with NPPS suppressed RAS-mutant cancers in vitro and in vivo. In conclusion, this study reveals an unrecognized mechanism and druggable lynchpin for modulation of pan-mutant-RAS pathway, proposing a new potential therapeutic approach for treating RAS-mutant cancers.
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- 2024
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10. Processing Challenges and Delamination Prevention Methods in Titanium-Steel DED 3D Printing
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Andreu, Alberto, Kim, Sanglae, Kim, Insup, Kim, Jeong-Hwan, Noh, Jinhong, Lee, Suhan, Lee, Wonhee, Su, Pei-Chen, and Yoon, Yong-Jin
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Direct Energy Deposition (DED) 3D printing has gained significant importance in various industries due to its ability to fabricate complex and functional parts with reduced material waste, and to repair existing components. Titanium alloys, known for their exceptional mechanical properties and biocompatibility, are widely used in DED 3D printing applications, where they offer benefits such as lightweight design possibilities and high strength-to-weight ratio. However, given the high material cost of titanium alloys, certain applications can benefit from the coating capabilities of DED to achieve the advantages of titanium on a distinct material substrate. Nevertheless, challenges related to material incompatibility and the development of unwanted brittle phases still affect the successful deposition of titanium alloys on steel substrates with DED 3D printing. This paper investigates the processing challenges and reviews delamination prevention methods, specifically targeting titanium-steel interfaces. In particular, the formation of unwanted brittle Ti–Fe intermetallics and methods to circumvent their formation are explored. The findings of this research contribute to a deeper understanding of the processing challenges and delamination prevention methods in DED 3D printing.
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- 2024
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11. Injection moulding process parameter and strain rate dependence mechanical properties measurement and theoretical estimation of EVA polymer foam
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Tsang, Yuk-Wah, Fu, Hsiao-Ju, Huang, Pei-Chen, Yadav, Bishnu-Nand, and Liu, De-Shin
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In this study, the combined experimental and theoretical estimation on elastic characteristics of EVA (ethylene-vinyl acetate) copolymer material is demonstrated. Strain rate dependence stress–strain behavior of EVA in raw and foam material form are measured by the quasi static and dynamic compression test. Simultaneously, the influence of different mould temperature and injection pressure on mechanical properties of EVA foam are investigated. According to the usage scenario of EVA foam in sport footwear application, the EVA foam is generally deformed under higher strain rate as compared with the quasi-static compression condition. For this reason, the stress–strain behavior of EVA foam under high strain rates of 2.66 × 10−3and 2.66 × 10−2s−1are estimated. The analytic results revealed that the strain rate slightly enhanced the modulus of EVA foam, and the foregoing strain rate effect is substituting into the classic Young's modulus estimation equation of closed cell cellular solid. Accordingly, the strain rate dependence Young's modulus of EVA foam is successfully estimated by both experiment and theoretical estimation.
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- 2024
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12. Solvothermal Synthesis of PtNi Nanoparticle Thin Film Cathode with Superior Thermal Stability for Low Temperature Solid Oxide Fuel Cells
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Shin, Jiyoon, Kamlungsua, Kittiwat, Li, Hao-Yang, and Su, Pei-Chen
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Graphical Abstract:
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- 2024
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13. Development and Demonstration on Process-Oriented Warpage Simulation Methodology of Fan-Out Panel-Level Package in Multilevel Integration
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Lee, Chang-Chun, Chang, Che-Pei, and Huang, Pei-Chen
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With the advantage of high I/O amount, thin substrate, and superior heterogeneous integration ability, fan-out panel-level packaging (FO-PLP) has become a major platform for the future design of advanced electronic packaging. Despite the enlarged area of the panel-level package and quadrilateral structure, the expected usage ratio of the panel platform is better than the traditional wafer platform. However, an enlarged structural dimension also causes the harsh warpage issue during the fabrication and assembly procedure for the concerned packaging. The aforementioned process-induced warpage is regarded as an urgent reliability issue and must be solved for the FO-PLP vehicle. To estimate the induced stress among structures, process conditions are important factors to interpolate the process-dependent stress in simulation. In the aforementioned process-oriented simulation work, the significant scale mismatch issue in an FO-PLP vehicle causes the difficulty in mesh gridding and the model becomes discontinuous after the sawing process from panel to stripe. In this research, the multilevel warpage simulation methodology is demonstrated with a redistribution layer (RDL) first FO-PLP vehicle. The equivalent material method is utilized to conquer the modeling complexity on fine RDL and micro-bump. The estimated warpage from finite element analysis (FEA) is verified with the measured warpage from the experiment for two process steps, panel and stripe levels. The presented methodology for FEA also indicates the same results as the experiment. The warpage error between the simulation and experiment is below 5%. Accordingly, the presented simulation methodology is validated, which can be utilized to estimate the FO-PLP warpage. The factor and material for the process can be further optimized on the basis of the proposed methodology with FEA.
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- 2023
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14. Rapid development methodology of agricultural robot navigation system working in GNSS-denied environment
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Zhao, Run-Mao, Zhu, Zheng, Chen, Jian-Neng, Yu, Tao-Jie, Ma, Jun-Jie, Fan, Guo-Shuai, Wu, Min, and Huang, Pei-Chen
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Robotic autonomous operating systems in global n40avigation satellite system (GNSS)-denied agricultural environments (green houses, feeding farms, and under canopy) have recently become a research hotspot. 3D light detection and ranging (LiDAR) locates the robot depending on environment and has become a popular perception sensor to navigate agricultural robots. A rapid development methodology of a 3D LiDAR-based navigation system for agricultural robots is proposed in this study, which includes: (i) individual plant clustering and its location estimation method (improved Euclidean clustering algorithm); (ii) robot path planning and tracking control method (Lyapunov direct method); (iii) construction of a robot-LiDAR-plant unified virtual simulation environment (combination use of Gazebo and SolidWorks); and (vi) evaluating the accuracy of the navigation system (triple evaluation: virtual simulation test, physical simulation test, and field test). Applying the proposed methodology, a navigation system for a grape field operation robot has been developed. The virtual simulation test, physical simulation test with GNSS as ground truth, and field test with path tracer showed that the robot could travel along the planned path quickly and smoothly. The maximum and mean absolute errors of path tracking are 2.72 cm, 1.02 cm; 3.12 cm, 1.31 cm, respectively, which meet the accuracy requirements of field operations, establishing the effectiveness of the proposed methodology. The proposed methodology has good scalability and can be implemented in a wide variety of field robot, which is promising to shorten the development cycle of agricultural robot navigation system working in GNSS-denied environment.
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- 2023
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15. COVID-19 impact on ED boarding likely related to increased timeframe for patient disposition to admission, discharge, and transfer.
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Toy, Stanley, Chiu, Wen-Ta, Chon, John, Lin, Wan-Yi, Aflakian, Kaveh, Pan, Pei-Chen, Jiang, Ting-Yun, Yeh, Chia-Hsing, Wu, Su-Yen, and Wu, Jonathan
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- 2023
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16. The Effects of Top Management Team External Social Capital on Firm's Openness: Exploring the Mediating Role of Strategic Knowledge Integration
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David, Kashosi Gad, Wu, Yang, Pei, Chen, and Moosa, Anitha
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Going from the knowledge-based view of the firm, we designed a framework to describe top management team's (TMT) external social capital as a determinant of the depth and breadth of external knowledge search strategies in open innovation and Small and medium-sized enterprises (SMEs) innovation performance. Besides, we examined the significance of strategic knowledge integration in external knowledge search strategies and innovation performance. Using a sample of 252 Kenyan manufacturing SMEs, the authors applied partial least square to a structural equation model to test the suggested hypotheses. The findings reveal that firms with intense, more frequent, and closer TMT external social capital with external knowledge sources can enhance the stock of externally acquired knowledge, showing that TMT's external social capital plays a crucial role in facilitating the breadth and depth of external knowledge search strategies. The article also finds that external knowledge search breadth is more affected by TMT's external social capital, whereas strategic knowledge integration mediates external knowledge search practices and innovation performance. Therefore, firms with a good ability to identify new opportunities and dynamic strategic businesses tend to be more innovative. This article contributes to social capital and open innovation literature by analyzing two critical determinants: external social capital and strategic knowledge integration. This article attempts to address these gaps in the literature by linking TMT's external social capital, the search for external knowledge, and strategic knowledge integration to innovation performance.
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- 2023
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17. Safety of Supplementation of Omega-3 Polyunsaturated Fatty Acids: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
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Chang, Jane Pei-Chen, Tseng, Ping-Tao, Zeng, Bing-Syuan, Chang, Cheng-Ho, Su, Huanxing, Chou, Po-Han, and Su, Kuan-Pin
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There is no comprehensive review of the evidence to support omega-3 polyunsaturated fatty acids (PUFAs) as a relatively safe and tolerable intervention. This study aimed to provide a meta-analytic and comprehensive review on the adverse effects of all kinds of ω-3 PUFA supplementation reported in randomized controlled trials (RCTs) in human subjects. A systematic review of RCTs published between 1987 and 2023 was carried out based on searches of 8 electronic databases. All RCTs that compared the adverse effects of ω-3 PUFAs containing eicosapentaenoic acid, docosahexaenoic acid, or both compared with controls (a placebo or a standard treatment) were included. The primary outcome was the adverse effects related to ω-3 PUFA prescription. A total of 90 RCTs showed that the ω-3 PUFA group, when compared with the placebo, had significantly higher odds of occurrence of diarrhea (odds ratio [OR] = 1.257, P= 0.010), dysgeusia (OR = 3.478, P< 0.001), and bleeding tendency (OR = 1.260, P= 0.025) but lower rates of back pain (OR = 0.727, P< 0.001). The subgroup analysis showed that the prescription ω-3 PUFA products (RxOME3FAs) had higher ω-3 PUFA dosages than generic ω-3 PUFAs (OME3FAs) (3056.38 ± 1113.28 mg/d compared with 2315.92 ± 1725.61 mg/d), and studies on RxOME3FAs performed more standard assessments than OME3FAs on adverse effects (63% compared with 36%). There was no report of definite ω-3 PUFA-related serious adverse events. The subjects taking ω-3 PUFAs were at higher odds of experiencing adverse effects; hence, comprehensive assessments of the adverse effects may help to detect minor/subtle adverse effects associated with ω-3 PUFAs.
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- 2023
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18. Cholecystectomy and risk of liver disease: a systematic review and meta-analysis of 27 million individuals.
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De Luo, Xin-Pei Chen, Yang Dai, Fei Kuang, Mao-Ji Kang, Bo Li, and Song Su
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Background: There is still a lack of knowledge on the association between cholecystectomy and liver disease. This study was conducted to summarize the available evidence on the association of cholecystectomy with liver disease and quantify the magnitude of the risk of liver disease after cholecystectomy. Methods: PubMed, Embase, Web of Science, and Cochrane Library were searched systematically from database inception to January 2023 to identify eligible studies that evaluated the association between cholecystectomy and the risk of liver disease. Metaanalysis was conducted to obtain a summary odds ratio (OR) and 95% confidence interval (CI) using a random-effects model. Results: We identified 20 studies with a total of 27 320 709 individuals and 282 670 liver disease cases. Cholecystectomy was associated with an increased risk of liver disease (OR: 1.63, 95% CI: 1.34-1.98). In particular, cholecystectomy was found to be significantly associated with a 54% increased risk of nonalcoholic fatty liver disease (OR: 1.54,95% CI: 1.18-2.01), a 173% increased risk of cirrhosis (OR: 2.73, 95% CI: 1.81-4.12), and a 46% increased risk of primary liver cancer (OR: 1.46, 95% CI: 1.18-1.82). Conclusions: There is an association between cholecystectomy and the risk of liver disease. Our results suggest that strict surgical indications should be implemented to reduce unnecessary cholecystectomy. Additionally, the routine assessment of liver disease is necessary for patients with a history of cholecystectomy. More prospective large-sample studies are required for better estimates of the risk. [ABSTRACT FROM AUTHOR]
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- 2023
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19. Stem-cell therapy in stress urinary incontinence: A review.
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Pei‑Chen Li and Dah‑Ching Ding
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The incidence of urinary incontinence (UI) is approximately 10%–40% in women, affecting one to two hundred million women worldwide. Stress UI (SUI) is characterized by involuntary urination due to increased abdominal stress and urine leakage without bladder contraction. Surgical treatments include midurethral slings, bulking agents, and Burch colposuspension to restore urethral continence. Nevertheless, an optimal treatment for all types of incontinence has not yet been established. Stem-cell therapy has emerged as a novel treatment for many diseases. Stem cells can self‑renew and can differentiate into other cell types. Adult stem cells are suitable for clinical applications because they can be easily obtained noninvasively or minimal invasively. Stem-cell therapy for SUI has been studied preclinically and clinically. Muscle-derived progenitors have been used to treat SUI by promoting the regeneration of rhabdomyosphincters. The human trial used transurethral injection of autologous muscle-derived stem cells to improve sphincter contractility and function. Other sources of stem cells have also been studied in SUI treatment, such as umbilical cord blood, amniotic fluid, bone marrow, urine, and adipose tissue. The success rate of stem-cell therapy for SUI ranges from 13% to 100%. This review aimed to summarize the current status of stem-cell treatments for SUI, with respect to clinical trials, cell types, transplantation routes, and dosage volume and frequency. [ABSTRACT FROM AUTHOR]
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- 2023
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20. Top-Emission ZnSeTe/ZnSe/ZnS-Based Blue Quantum Dot Light-Emitting Diodes with Enhanced Chroma Efficiency.
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Feng, Jingwen, Jiang, Maocheng, Li, Dong, Zhang, Yuanming, Pei, Chen, Zhou, Li, Chen, Zhuo, Li, Yanzhao, Li, Xinguo, and Xu, Xiaoguang
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- 2023
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21. EXPERIMENTAL STUDY ON PHYSICAL, ELECTRICAL AND FRACTAL CHARACTERISTICS OF TIGHT OIL SANDSTONE RESERVOIR.
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Heng Geng, Yitao Hu, Chunlin Ma, Bin Yi, Pei Chen, Huanxu Zhang, Yuyang Qu, and Wenhao Tang
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Physical properties, resistivity and pore structure parameters are indirect reflection of underground reservoir quality. In this paper, taking the Chang 6 tight oil sandstone reservoir of the Yanchang Formation in L area, southeastern Ordos Basin as an example, the physical, electrical and fractal characteristics of the tight oil reservoirs were systematically studied based on thin section, oil displacement, physical property, electrical property, mercury injection and relative permeability experiments. The results show that compaction is common in the Chang 6 Member, and the strong compaction results in linear and concave-convex contacts between particles. The high plastic particle content is also an important reason for the low porosity and low permeability of the target layer. It is found that feldspar dissolution pore is the main pore type in the target layer. The content of carbonate cements in the target layer is not high, but the metasomatism and filling of calcite minerals are common. Secondary dissolution occurs in cements, but the strength of dissolution is not large. The reservoir of the Chang 6 Member has strong heterogeneity. The water displacement tests show that the final oil displacement efficiency of the tight oil sandstones is 44.6%. When the water saturation is less than 45.5%, the reservoir produces pure oil. The water saturation calculation formula of tight oil sandstone reservoir is constructed based on the electrical experiments and the Archie formula. Finally, the fractal dimension of the samples was obtained based on the mercury injection experiments, and the fractal dimensions range from 2.2 to 2.8. It is found that the higher the quartz content, the smaller the fractal dimension. However, the higher the clay mineral content, the greater the fractal dimension. With the increase of fractal dimension, the pore throat structures in the rock tend to be complicated, and the drainage pressure of the reservoir increases, which is not conducive to oil and gas charging. Therefore, fractal dimensions can be used to indirectly evaluate the quality of tight oil sandstone reservoirs. [ABSTRACT FROM AUTHOR]
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- 2023
22. Association between maternal factors and fetal macrosomia in full-term singleton births.
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Yu-Hsuan Chen, Wei-Yu Chen, Chia-Yuan Chang, Ching-Yi Cho, Yi-Hsuan Tang, Chang-Ching Yeh, Yi-Hsin Yang, Pei-Chen Tsao, and Yu-Sheng Lee
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FETAL macrosomia ,BIRTH size ,BIRTH weight ,NEWBORN infants ,GESTATIONAL diabetes ,WEIGHT gain - Abstract
Background: Macrosomia, defined as a birth weight of =4000 g, is associated with a high risk of birth injury. Fetal growth is highly correlated with maternal conditions, and several maternal factors are associated with neonatal birth size. The current study aimed to assess maternal factors related to fetal macrosomia in a Taiwanese population. Methods: The medical records of pregnant mothers and their newborns were retrospectively reviewed. All singleton pregnancies delivered at and after 37 weeks of gestation were included in the analysis. Maternal and neonatal conditions were evaluated according to different birth weights. Results: A total of 4262 infants were enrolled in our study. The mean birth weight was 3156 ± 383 g, including 77 (1.8%) cases with birth weight =4000 g, and 154 (3.6%) infants with birth weight <2500 g. The mean maternal body weight before delivery was 67.6 ± 10.0 kg. The mean 6-month gestational weight gain (6mGWG) was 12.3 ± 4.2 kg, and the mean maternal body mass index (BMI) was 26.2 ± 3.6 kg/m2. The maternal weight, height, and 6mGWG, gestational age, and placental weight were significantly positively correlated with neonatal birth weight. The odds ratios of macrosomia were 3.1 in neonates born to mothers with a 6mGWG of =15 kg, 6.3 in those born to mothers with gestational diabetes mellitus, and 4.1 in those born to mothers with a BMI of =30 kg/m2. Newborn macrosomia was associated with adverse events in pregnant mothers and newborn infants. Conclusion: Gestational diabetes mellitus, 6mGWG, and maternal BMI are significantly correlated with neonatal macrosomia in full-term singleton births. Further, neonatal macrosomia is an important cause of maternal and neonatal morbidity. Hence, pregnant women should undergo maternal counseling for weight management before and during pregnancy, and the appropriate delivery method should be identified to prevent perinatal adverse events. [ABSTRACT FROM AUTHOR]
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- 2023
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23. Survival effect of pretreatment FDG-PET–CT on nasopharyngeal cancer.
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Yang, Pei-Chen, Chen, Wan-Ming, Chen, Mingchih, Shia, Ben-Chang, Wu, Szu-Yuan, and Chiang, Ching-Wen
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POSITRON emission tomography computed tomography ,NASOPHARYNX cancer ,PROPENSITY score matching - Abstract
Accurate staging is the first step for optimal treatment selection in patients with nasopharyngeal carcinoma (NPC). In this propensity-score-matched, population-based cohort study, we investigated the survival effects of pretreatment 8-fluorodeoxyglucose positron emission tomography–computed tomography (
18 FDG-PET–CT) on patients with NPC. We included patients with stage I–IVA NPC receiving radiotherapy or concurrent chemoradiotherapy and categorized them into two 1:1 propensity score–matched groups according to whether or not they underwent pretreatment18 FDG-PET–CT and compared their outcomes. Of the 10,756 patients, propensity score matching yielded 4366 patients in each group. According to multivariable Cox regression analyses, the most prominent correlation between pretreatment18 FDG-PET–CT and all-cause death was observed in patients with stage II NPC (adjusted hazard ratio [aHR], 0.77; 95% confidence interval [CI], 0.60–0.90; P =.0433), followed by patients with stage III NPC (aHR, 0.81; 95% CI, 0.69–0.94; P =.0071) and patients with stage IVA NPC (aHR, 0.88; 95% CI, 0.79–0.97; P =.0091). This association was not significant in patients with stage I NPC (aHR, 1.20; 95% CI, 0.75–1.93; P =.4426). Pretreatment18 FDG-PET–CT is associated with longer survival in patients with clinical stage II–IVA NPC but not in stage I NPC. [ABSTRACT FROM AUTHOR]- Published
- 2023
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24. Triazoles in the environment: An update on sample pretreatment and analysis methods.
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Zou, Pei-chen, Zhang, Yuan, Bian, Yu, Du, Rong-zhu, Qian, Min, Feng, Xue-song, Du, Cheng, and Zhang, Xin-yuan
- Abstract
Triazoles, due to their high bactericidal performance, have been widely used in the agricultural, clinical, and chemical industry. However, triazoles have been proven to cause endocrine-toxic and organ impairment in humans as a potentially toxic substance. Besides, because of the improper use and difficulty of degradation, triazoles pesticide residues left in the environment could pose a threat to the environment. Therefore, the rapid, reliable, accurate, and high-sensitivity triazoles analysis methods are significantly essential to effectively monitor their presence in various samples and safeguard human health. This review aims to summarize and update the progress of the pretreatment and analytical methods of triazole fungicides in environmental samples from 2012 to 2024. Common pretreatment methods used to extract and purify targets include simple steps (e.g., protein precipitation and coated blade spray), liquid-liquid extraction, solid-phase extraction, and various microextraction methods such as liquid-phase microextraction and solid-phase microextraction, among others. Detection methods mainly include liquid chromatography-mass spectrometry, gas chromatography-mass spectrometry, supercritical fluid chromatography, sensing methods, and capillary electrophoresis. In addition, we elaborate and compare the advantages and disadvantages of different pretreatment and analytical methods, and their development prospects are discussed. [Display omitted] • The pretreatment and analysis methods of triazoles are discussed extensively. • Progress in microextraction and online technology are introduced in detail. • The advance of LC/GC conditions, analyzers and electrode materials are illustrated. • The pros and cons of different methods are compared. • The future development trend of triazoles analysis is proposed. [ABSTRACT FROM AUTHOR]
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- 2024
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25. All-Cause and Cause-Specific Mortality in Parents After the Death of a Child in Taiwan: A Population-Based Cohort Study
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Chen, Ying-Yeh, Gunnell, David, Wu, Chia-Kai, Hu, Ya-Hui, and Lee, Pei-Chen
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- 2023
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26. Stimulated Raman scattering spectro-microscopy using multiple-plate continuum
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Shaked, Natan T., Hayden, Oliver, Huang, Guan-Jie, Lai, Pei-Chen, Shen, Ming-Wei, Su, Jia-Xuan, Guo, Jhan-Yu, Chao, Kuo-Chuan, Lin, Peng, Cheng, Ji-Xin, Chu, Li-An, Chiang, Ann-Shyn, Chen, Bo-Han, Lu, Chih-Hsuan, Chu, Shi-Wei, and Yang, Shang-Da
- Published
- 2023
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27. Use artificial neural network to recommend the lumbar spinal endoscopic surgical corridor.
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Chen, Chien-Min, Chen, Pei-Chen, Chen, Ying-Chieh, and Wang, Guan-Chyuan
- Abstract
Objectives: The transforaminal and interlaminar approaches are the two main surgical corridors of full endoscopic lumbar surgery. However, there are no quantifying methods for assessing the best surgical approach for each patient. This study aimed to establish an artificial intelligence (AI) model using an artificial neural network (ANN). Materials and Methods: Patients who underwent full endoscopic lumbar spinal surgery were enrolled in this research. Fourteen pre-operative factors were fed into the ANN. A three-layer deep neural network was constructed. Patient data were divided into the training, validation, and testing datasets. Results: There were 899 patients enrolled. The accuracy of the training, validation, and test datasets were 87.3%, 85.5%, and 85.0%, respectively. The positive predictive values for the transforaminal and interlaminar approaches were 85.1% and 89.1%, respectively. The area under the curve of the receiver operating characteristic was 0.91. The SHapley Additive exPlanations algorithm was utilized to explain the relative importance of each factor. The surgical lumbar level was the most important factor, followed by herniated disc localization and migrating disc zone level. Conclusion: ANN can effectively learn from the choice of an experienced spinal endoscopic surgeon and can accurately predict the appropriate surgical approach. [ABSTRACT FROM AUTHOR]
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- 2022
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28. Increased antibiotic exposure in early life is associated with adverse outcomes in very low birth weight infants.
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Wen-Yin Chen, Yu-Cheng Lo, Po-Han Huang, Yu-Xuan Chen, Pei-Chen Tsao, Yu-Sheng Lee, Mei-Jy Jeng, and Miao-Chiu Hung
- Subjects
VERY low birth weight ,WEIGHT in infancy ,ANTIBIOTICS ,PREMATURE infants ,BRONCHOPULMONARY dysplasia - Abstract
Background: The use of antibiotics in the early lives of premature infants may alter the microbiota and influence their clinical outcomes. However, whether the administration of probiotics can influence these outcomes remains unknown. In our study, probiotics were routinely administered unless contraindicated. We explored whether increased antibiotic exposure with the routine use of probiotics was associated with necrotizing enterocolitis (NEC) or bronchopulmonary dysplasia (BPD). Methods: A retrospective cohort study was conducted, enrolling very low birth weight (VLBW) infants admitted between January 1, 2016, and March 31, 2020, to a medical center. Days of antibiotic exposure in the first 14 days of life were recorded. The primary outcomes were NEC and BPD. Adjusted odds ratios (aORs) and 95% confidence intervals (CIs) were calculated using multivariable regression analyses to assess risk factors. Results: Of 185 VLBW infants admitted to the medical center, 132 met the inclusion criteria. Each additional day of antibiotic treatment was associated with increased odds of NEC (aOR, 1.278; 95% CI, 1.025-1.593) and BPD (aOR, 1.630; 95% CI, 1.233-2.156). The association remained in the NEC analysis after adjustment for probiotic use. Conclusion: Increased antibiotic exposure in the early lives of VLBW infants was associated with increased risks of NEC and BPD. The probiotics did not influence the outcomes. Our findings suggest that clinicians should be alerted to the adverse outcomes of antibiotic use in infants with VLBWs. [ABSTRACT FROM AUTHOR]
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- 2022
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29. Lattice Boltzmann simulation and mesoscopic mechanism analysis of permeability in soil-rock mixtures
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Cai, Pei-chen, Mao, Xue-song, Dai, Ze-yu, Fu, Jing, Zhang, Yi-ming, and Gong, Xiao-qin
- Abstract
The subgrade constructed by soil–rock mixture (SRM) usually suffers from slope instability, subgrade collapse, and uneven settlement, which are closely related to the permeability of the SRM. In order to reveal the internal influence mechanism of the seepage characteristics of the SRM, the SRM models of dense structure (DS), medium-dense structure (MDS), and loose structure (LS) were generated based on the improved Monte Carlo method (IMCM) and the self-made MATLAB program, and the lattice Boltzmann method (LBM) was introduced to study the mesoscopic seepage characteristics of SRM under different influence factors. Finally, the internal mechanism of the influence of rock content rate (RCR) on the SRM permeability under different conditions was discussed in detail with a simplified model. The results show that the permeability of the SRM in DS, MDS, and LS cases tends to increase continuously with the increase of RCRwhen the loose-density degree (LD) and rock size (DR) are the same. The looser the structure of the SRM samples, the larger the permeability. When the RCRis lower than the threshold value, the larger the DRthe slower the increase of the permeability; but when the RCRis higher than the threshold value, the larger the DRthe significantly larger the increase of the permeability. In this study, the threshold value is determined to be about 35%. The RCRsensitivity index (S) shows an overall trend of increasing, then decreasing, and then slowly increasing with increasing RCR, in which large rocks and MDS have a facilitating effect on the sudden change of SRM permeability. When the soil/rock particle size is constant, the permeability of the simplified model tends to “decrease → increase → decrease” with the increase of RCR. This study provides an IMCM-LBM joint simulation method as a promising option to simulate realistic SRM particles permeability in geotechnical experiments.
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- 2023
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30. Nanometer Yttria-doped Ceria Shell by Atomic Layer Deposition over Porous Pt for Improved Oxygen Reduction Reactions
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Shin, Jeong Woo, Lee, Sungje, Go, Dohyun, Yang, Byung Chan, Kim, Taeyoung, Jo, Sung Eun, Su, Pei-Chen, and An, Jihwan
- Abstract
Designing highly active and thermally stable electrodes is crucial for realizing low-temperature solid oxide fuel cells (LT-SOFCs) with excellent performance. In this study, we fabricated an yttria-doped ceria (YDC) shell layer by atomic layer deposition (ALD) over a Pt cathode by controlling the doping concentration of yttria in YDC film. The exchange current density was enhanced by a factor of five when the ALD YDC shell layer was deposited onto the cathode surface compared to the bare Pt cathode, resulting in an 80% decrease in the activation resistance of the 19 mol%-doped ALD YDC-overcoated Pt cathode compared to that of the bare Pt cathode. Furthermore, the thermal stability was enhanced in low-to-medium-doped (7–19 mol%) ALD YDC-coated Pt cathodes, whereas the highly doped (31 mol%) cathode showed a relatively marginal improvement in stability.
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- 2023
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31. Temperature-dependence mechanical characteristics investigation of Cu wire and corresponding high strain rate plasticity behaviors enabled by Johnson–Cook constitutive model
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Liu, De-Shin, Wen, Po-Chun, Zhuang, Zhen-Wei, Chao, Yung-Ching, and Huang, Pei-Chen
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The temperature-dependence mechanical characteristics of 4N Cu wire with 25, 30 and 38 μm diameters are investigated via the utilization of micro-tensile tests. Measured data revealed that the concerned mechanical characteristics, Young's modulus and yield stresses, are significantly degraded under high testing temperature, and the variation of aforementioned characteristics degradation are almost linear proportional to the temperature increment. Trapezoidal and standard triangle loop formation of Cu wire are simulated based on the finite element method, the simulated looping profiles of Cu wires are compared to the Au wires and the Cu wire is regarded as the improved solution for the high loop height wire formation. Moreover, the Johnson–Cook constitutive model is utilized to describe the plasticity of Cu wire in accordance with the experimental data under different temperature levels. Accordingly, the comprehensive mechanical characteristics’ investigation of 4N Cu wire are systemically demonstrated and explored.
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- 2023
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32. Interactive Lattice and Process-Stress Responses in the Sub-7 nm Germanium-Based Three-Dimensional Transistor Architecture of FinFET and Nanowire GAAFET
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Lee, Chang-Chun, Huang, Pei-Chen, and Hsiang, Te-Pei
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The comprehensive layout-dependence lattice and process-stress variations and induced mobility gain in sub-7 nm germanium (Ge)-based Fin-type field-effect transistors (FinFETs) and gate-all-around (GAA) nanowire (NW)-type FETs are investigated through process-oriented stress simulation with lattice generated from strain-relaxed buffer (SRB) and source-drain (S-D) region. Analysis results reveal that the local lattice stressors mentioned above are the dominant stress resources in sub-7 nm FinFET and GAA transistor architectures. For FinFET architecture, the mobility performance is highly linearly proportional to the S-D length, and 49.01% and 105.96% gains are observed when S-D lengths of 5 and 50 nm are designed, respectively. To achieve simultaneous maximum integration density and effective performance enhancement of the three-dimensional transistor of concern, the design roles of narrow stacked pitch and channel length are explored. The maximum mobility enhancements are determined to be 231.89% and 288.90% for the Ge n- and p-type GAAFET analyzed herein, respectively.
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- 2022
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33. Cretaceous ornithurine supports a neognathous crown bird ancestor
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Benito, Juan, Kuo, Pei-Chen, Widrig, Klara E., Jagt, John W. M., and Field, Daniel J.
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The bony palate diagnoses the two deepest clades of extant birds: Neognathae and Palaeognathae1–5. Neognaths exhibit unfused palate bones and generally kinetic skulls, whereas palaeognaths possess comparatively rigid skulls with the pterygoid and palatine fused into a single element, a condition long considered ancestral for crown birds (Neornithes)3,5–8. However, fossil evidence of palatal remains from taxa close to the origin of Neornithes is scarce, hindering strong inferences regarding the ancestral condition of the neornithine palate. Here we report a new taxon of toothed Late Cretaceous ornithurine bearing a pterygoid that is remarkably similar to those of the extant neognath clade Galloanserae (waterfowl + landfowl). Janavis finalidens, gen. et sp. nov., is generally similar to the well-known Mesozoic ornithurine Ichthyornisin its overall morphology, although Janavisis much larger and exhibits a substantially greater degree of postcranial pneumaticity. We recovered Janavisas the first-known well-represented member of Ichthyornithes other than Ichthyornis, clearly substantiating the persistence of the clade into the latest Cretaceous9. Janavisconfirms the presence of an anatomically neognathous palate in at least some Mesozoic non-crown ornithurines10–12, suggesting that pterygoids similar to those of extant Galloanserae may be plesiomorphic for crown birds. Our results, combined with recent evidence on the ichthyornithine palatine12, overturn longstanding assumptions about the ancestral crown bird palate, and should prompt reevaluation of the purported galloanseran affinities of several bizarre early Cenozoic groups such as the ‘pseudotoothed birds’ (Pelagornithidae)13–15.
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- 2022
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34. Serosal Injury to a Distended Stomach during Open Entry for Laparoendoscopic Single-Site Surgery.
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Pei-Chen Chen, Pei-Chen Li, Hsuan Chen, and Dah-Ching Ding
- Abstract
Complications related to open entry for laparoscopic procedures are relatively rare, and the incidence of closed entry-related complications is 0.4 per 1000 cases. We report a case of serosal injury to a distended stomach that was caused during open entry. A 37-year-old woman presented with a 1-year history of dysmenorrhea. Transvaginal ultrasonography revealed a uterine myoma and cesarean section (C/S) wound defect. Laparoscopic single-site myomectomy and repair of the C/S wound defect were planned. Open abdominal entry was achieved at the umbilicus, and the patient's stomach was distended and injured by the electric knife (30 watts). After identifying the injury, we inserted a nasogastric tube to deflate the stomach and repaired the gastric serosal injury. The laparoscopic myomectomy and C/S defect repair were subsequently performed without complications. The patient has remained free from complications during the 1-year follow-up. Gastric serosal injury during open entry is a rare complication. Insertion of a nasopharyngeal tube and routine percussion of the abdomen before entering the abdominal cavity are the most important steps to prevent this complication. [ABSTRACT FROM AUTHOR]
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- 2022
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35. Association of Body Mass Index and Parkinson Disease: A Bidirectional Mendelian Randomization Study.
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Domenighetti, Cloé, Sugier, Pierre-Emmanuel, Kumar Sreelatha, Ashwin Ashok, Schulte, Claudia, Grover, Sandeep, Portugal, Berta, Pei-Chen Lee, May, Patrick, Bobbili, Dheeraj, Blagojevic, Milena Radivojkov, Uchtner, Peter, Singleton, Andrew B., Hernandez, Dena, Edsall, Connor, Mellick, George D., Zimprich, Alexander A., Pirker, Walter, Rogaeva, Ekaterina A., Lang, Anthony E., and Koks, Sulev
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- 2024
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36. Comparative demography and mass rearing of Aedes aegypti fed on different food sources using a novel perforated feeder
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Hsu, Pei-Chen, Atlihan, Remzi, Chi, Hsin, and Dai, Shu-Mei
- Abstract
A novel thermal-constant blood-feeder covered with a perforated film and using pig blood was developed for rearing Aedes aegypti (L.) (Diptera: Culicidae). The perforated film was used as a substitute for the membrane or parafilm that is normally used in conventional blood-feeders to prevent the mosquitoes from directly contacting the blood. The efficiency of this perforated blood feeder was assessed by using live mice and comparing the engorgement rate of female mosquitoes and their demographic parameters. In a no-choice test, no significant differences were observed in the engorgement rates and fecundity between females fed on perforated feeders containing pig blood and those fed on live mice. In a three-minute-long free-choice test, the accumulated engorgement rate was significantly higher in mosquitoes feeding on the perforated feeders than in those feeding on live mice. The demographic characteristics indicated that mosquitoes fed on the perforated feeder containing pig blood had a higher immature survival rate and prolonged adult male and female longevity. Although a lower intrinsic rate of increase and lower finite rate of increase were observed when female adults fed on the perforated feeder, computer projection of the population growth was comparable using both blood sources. Mass-rearing analysis showed that the perforated blood feeder was much more cost-effective than using live mice. These results demonstrate that the perforated blood feeder containing pig blood is more effective and cost efficient than using live mice for maintaining and mass rearing of mosquitoes in the laboratory.
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- 2022
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37. Reconsideration of Alzheimer’s Disease Therapy from a Viewpoint of Amyloidogenic Evolvability
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Ho, Gilbert, Choo, Pei Chen, Waragai, Masaaki, Inoue, Satoshi, Masliah, Eliezer, and Hashimoto, Makoto
- Abstract
Presuming that Alzheimer’s disease (AD) might represent an antagonistic pleiotropic phenomenon derived from the evolvability of multiple amyloidogenic proteins, targeting such proteins simultaneously could enhance therapeutic efficacy. Furthermore, considering that amyloid-ß (Aß) immunotherapies during reproductive life stage might adversely decrease Aß evolvability in an offspring’s brain, the disease-modifying Aß immunotherapies should be limited to post-reproductive time in lifespan. Thus, current Aß immunotherapy strategies should be revised accordingly. Given that the “adiponectin paradox” might underlie both amyloidosis and cognitive dysfunction in aging brain, blocking activin signaling situated downstream of the adiponectin paradox might be an alternative strategy to prevent AD.
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- 2022
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38. Risk factors and predictive markers for early and late-onset neonatal bacteremic sepsis in preterm and term infants.
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Yi-Hsuan Tang, Mei-Jy Jeng, Hsin-Hui Wang, Pei-Chen Tsao, Wei-Yu Chen, and Yu-Sheng Lee
- Subjects
NEONATAL sepsis ,PREMATURE infants ,LEUCOCYTES ,RECEIVER operating characteristic curves ,SYMPTOMS ,BACTEREMIA - Abstract
Background: The early detection and prediction of bacteremic sepsis in preterm and term neonates remains a challenging task because of their nonspecific clinical presentations. We aimed to investigate the risk factors associated with bacteremia and find the cutoff values of predictive markers to achieve accurate diagnosis of neonatal bacteremic sepsis. Methods: Not-doing-well preterm and term neonates with suspected sepsis were retrospectively enrolled between January 2015 and December 2017 in Taipei Veterans General Hospital. Blood culture, hemogram, serum procalcitonin (PCT), and C-reactive protein (CRP) were drawn at the onset of clinical signs and symptoms. All cases were divided to either early-onset or late-onset groups according to postpartum age. Nonparametric statistic, logistic regression, and receiver operating characteristic analysis were performed to evaluate the risk factors and cutoff values for predicting bacteremia. Results: A total of 169 suspected sepsis episodes were analyzed, 68.0% of which had cardiopulmonary dysfunction and 19.5% had perinatal stress. The early-onset group had 123 (72.8%) patients, 4 of which had bacteremia and 119 had nonbacteremia conditions. The late-onset group had 46 (27.2%) patients, 8 of which had bacteremia and 38 had nonbacteremia conditions. Gestational age, birth body weight, Apgar score at 5 minutes, serum PCT, CRP, and platelet (PLT) count in the early-onset group and white blood cell (WBC) count in the late-onset group were substantially different between the patients with bacteremia and nonbacteremia conditions. PCT greater than 27 µg/L (adjusted odd ratio [aOR], 21.6; 95% CI, 1.1-435.1) and thrombocytopenia less than 100 × 109/L (aOR, 38.6; 95% CI, 1.4-1030.3) were predictive markers for bacteremia in the early-onset group. Conclusion: Early- and late-onset neonatal sepsis had different risk factors and predictive markers of bacteremia. PCT and PLT count in the early-onset group and WBC count in the late-onset group were accurate diagnostic serum markers for neonatal bacteremic sepsis. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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39. Factors associated with postoperative respiratory conditions and critical outcomes on pediatric liver transplantation: A single-center experience.
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Jeng-Hung Wu, Chin-Su Liu, Hsin-Lin Tsai, Chih-Ting Su, Yi-Hsuan Tang, Yu-Sheng Lee, Pei-Chen Tsao, Yi-Ting Yeh, Wei-Yu Chen, and Mei-Jy Jeng
- Subjects
LIVER transplantation ,TRANSPLANTATION of organs, tissues, etc. ,CHEST tubes ,CHILD patients ,PEDIATRIC intensive care ,INTENSIVE care units ,PLEURAL effusions - Abstract
Background: Orthotopic liver transplantation (OLT) is an established therapeutic option for pediatric end-stage liver disease (PELD). The postoperative respiratory conditions of OLT recipients may be associated with subsequent clinical outcomes including length of stay (LOS) in the pediatric intensive care unit (PICU). This study aimed to characterize the postoperative respiratory conditions, associated factors, and outcomes after pediatric OLT. Methods: Clinical data of children receiving OLT from July 2014 to July 2020 were retrospectively collected. Postoperative respiratory conditions were defined as time to extubation, significant pleural effusion, and initial postoperative PaO
2 /FiO2 ratio. Logistic and multiple regressions were applied to analyze the associations among clinical factors, postoperative respiratory conditions, and clinical outcomes. Results: Twenty-two patients with median age of 1.4-year-old (range: 25 days to 12 years old) were analyzed. Mortality within 28 days was 4.5% and median LOS in the PICU was 18 days. Of 22 patients, 11 patients (50.0%) were extubated over 24 hours after surgery, and 8 patients (36.4%) required drainage for pleural effusions. Longer LOS in the PICU were noted in patients extubated over 24 hours (p = 0.008), complicated with significant pleural effusions (p = 0.02) after surgery, and having low initial postoperative PaO2 /FiO2 (<300 mmHg) (p = 0.001). Among clinical factors, massive intraoperative blood transfusion (>40 mL/kg) was significantly associated with prolonged intubations, significant pleural effusions, low initial postoperative PaO2 /FiO2 , and prolonged LOS in the PICU (>14 days). The initial postoperative PaO2/FiO2 significantly depended on age, disease severity (PELD score), and whether the patient received massive intraoperative blood transfusion. Conclusion: Pediatric patients of OLT with poor postoperative respiratory conditions including low initial PaO2 /FiO2 ratio, extubation over 24 hours or significant pleural effusions have longer LOS in the PICU, and the requirement of massive intraoperative transfusion was a risk factor for both poor postoperative respiratory conditions and prolonged LOS in the PICU. [ABSTRACT FROM AUTHOR]- Published
- 2022
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40. Auger Electron Spectroscopy Analysis of the Thermally Induced Degradation of MAPbI3 Perovskite Films.
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Lin, Wei-Chun, Lo, Wei-Chun, Li, Jun-Xian, Huang, Pei-Chen, and Wang, Man-Ying
- Published
- 2021
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41. P‐90: Boosting the Efficiency of Cd‐Free Blue Quantum Dot Light‐Emitting Diodes via Charge Transport Layer Optimization
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Jiang, Maocheng, Feng, Jingwen, Wang, Tieshi, Zhang, Yuanming, Li, Dong, Chen, Zhuo, Li, Yanzhao, Li, Xinguo, Zhou, Li, Pei, Chen, and Xu, Xiaoguang
- Abstract
Quantum dot light‐emitting diodes (QLEDs) show great potential in the display and solid‐state lighting fields. However, the more mature cadmium‐based quantum dots and perovskite nanocrystals contain elements such as cadmium and lead, which pose a greater threat to the environment and human health and limit their larger‐scale applications. Therefore, Cd‐free quantum dots and its electroluminescent devices show greater potential. At present, the research of red and green QLEDs is progressing rapidly, while Cd‐free blue QLEDs are less reported, and the performance of the device is obviously lagging behind. Based on the above considerations, we optimized the thickness of the electron transport layer (ETL) and selected a more suitable hole transport materials (HTM) to make the carrier injection and transport more balanced, and finally obtained Cd‐free blue QLEDs with a high EQE up to 6.18%.
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- 2022
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42. Atomically Resolved Quantum-Confined Electronic Structures at Organic-Inorganic Interfaces of Two-Dimensional Ruddlesden-Popper Halide Perovskites.
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Min-Chuan Shih, Hung-Chang Hsu, Cheng-Chieh Lin, Shao-Ku Huang, Tzu-Pei Chen, Yung-Han Tsai, Chia-Chun Chen, Ya-Ping Chiu, and Chun-Wei Chen
- Published
- 2021
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43. Discovery of BPR1R024, an Orally Active and Selective CSF1R Inhibitor that Exhibits Antitumor and Immunomodulatory Activity in a Murine Colon Tumor Model.
- Author
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Kun-Hung Lee, Wan-Ching Yen, Wen-Hsing Lin, Pei-Chen Wang, You-Liang Lai, Yu-Chieh Su, Chun-Yu Chang, Cai-Syuan Wu, Yu-Chen Huang, Chen-Ming Yang, Ling-Hui Chou, Teng-Kuang Yeh, Chiung-Tong Chen, Chuan Shih, and Hsing-Pang Hsieh
- Published
- 2021
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44. Advancing LGBTQ+ inclusion in STEM education and AI research
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Wong, Emily, Urbanowicz, Ryan J., Bright, Tiffani J., Tatonetti, Nicholas P., Hsiao, Yi-Wen, Huang, Xiuzhen, Moore, Jason H., and Peng, Pei-Chen
- Abstract
The authors emphasize diversity, equity, and inclusion in STEM education and artificial intelligence (AI) research, focusing on LGBTQ+ representation. They discuss the challenges faced by queer scientists, educational resources, the implementation of National AI Campus, and the notion of intersectionality. The authors hope to ensure supportive and respectful engagement across all communities.
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- 2024
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45. Application of Auriculotherapy for Post-Burn Scar Syndrome in Young Adults with Major Burns.
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Cha-Chun Chen, San-Pei Chen, Shu-Yu Lyu, and Chung-Hua Hsu
- Subjects
BURNS & scalds complications ,AURICULOTHERAPY ,MASSAGE therapy ,SCARS ,ACUPUNCTURE ,TREATMENT effectiveness ,EAR ,HEART beat ,ITCHING ,PAIN management ,ADULTS - Abstract
Background: A burn scar is a type of hypertrophic scar that can cause significant clinical symptoms, discomfort, and post-burn scar (PBS) syndrome in up to 77% of patients with burn injuries. Medication and rehabilitation are rarely effective at managing patient discomfort, and both laser and surgical interventions are postponed until the scar stabilizes and discomfort is tolerable. Objectives: The present study was conducted to investigate the effectiveness of auricular acupuncture among burn victims from the Formosa Color Dust Explosion in Taiwan. Methods: We enrolled 31 victims of the 2016 Formosa Color Dust Explosion who met the study inclusion criteria. The intervention involved placement of magnetic beads over the auricular Shenmen and Subcortex acupoints on one ear. Patients performed selfmassage five times per day, and both magnet beads were removed between the fifth and seventh days during the sessions. Several evaluation tools were used to assess clinical symptoms: the visual analogue scale for pain assessment, Burn Man Itch Scale for perceived patient itchiness, 5-D Pruritus Scale for sleep quality, and heart rate variability (HRV) for effects on the autonomic nervous system. Results: The clinical symptoms were significantly decreased following the intervention, but the effect did not endure. The normal-to-normal heart rate interval, heart rate analysis abnormalities, and very low frequency heart rate were significantly decreased among patients with abnormal HRV (SD < 40) following treatment. Conclusion: Stimulation of the auricular Shenmen and Subcortex acupoints may effectively reduce pain, itchiness, and sleep disturbances among patients with PBS syndrome. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
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46. Photocatalytic reduction of gaseous carbon dioxide over NiO/TiO2 under UV light illumination.
- Author
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Ku, Young, Lee, Pei-Chen, and Luong, Giang KT
- Subjects
CARBON dioxide reduction ,PHOTOREDUCTION ,PHOTOCATALYSTS ,CARBON dioxide ,CONTINUOUS flow reactors - Abstract
• The NiO/TiO 2 composites was fabricated by impregnation method. • Photocatalytic reduction of gaseous CO 2 by NiO/TiO 2 photocatalyst • CO 2 was primarily converted into methane by using NiO/TiO 2 photocatalyst under UV illumination • The mechanism of CO 2 photoreduction under UV illumination was proposed. Several NiO/TiO 2 composites fabricated by the impregnation method were employed as photocatalysts for the photoreduction of gaseous CO 2 in this study. The characterizations of fabricated photocatalysts were observed by XRD, FE-SEM, EDS, N 2 adsorption-desorption, and UV–vis spectroscopy. The distribution of Ni, Ti, and O atoms on the surface of these photocatalysts was demonstrated to be uniform, and the BET surface areas were varied slightly with the increase of NiO loading. Meanwhile, the absorption edge of fabricated photocatalysts was found to shift towards the visible region and the bandgap energy was decreased. The photocatalytic reaction was conducted in a continuous-flow reactor under UV irradiation. Methane was identified to be the main product and produced in the order: 10 wt% NiO/TiO 2 > TiO 2 > 20 wt% NiO/TiO 2. The maximum methane yield reached at 4.69 mmol/g catalyst over 10 wt% NiO/TiO 2 and was twice higher than that of P -25. The formation of p - n junction significantly improved the photocatalytic activity of P -25. Furthermore, the proposed schematic diagram for photocatalytic CO 2 reduction in the gaseous phase under NiO-TiO 2 / UV process was introduced. [Display omitted] [ABSTRACT FROM AUTHOR]
- Published
- 2021
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47. Efficacy of intratracheal budesonide-surfactant combined therapy in surfactant-insufficient rat lungs with lipopolysaccharide insult.
- Author
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Pei-Chen Tsao, Chih-Hsueh Lin, Yu-Sheng Lee, Wei-Yu Chen, Mei-Jy Jeng, and Yu Ru Kou
- Subjects
LIPOPOLYSACCHARIDES ,TUMOR necrosis factors ,LUNGS ,RATS ,SURFACE active agents - Abstract
Background: Intratracheal steroid therapy for lipopolysaccharide (LPS)-induced acute lung injury (ALI) remains challenging particularly in surfactant-insufficient lungs, a common problem of neonatal or pediatric ALI. Surfactant has been used as a vehicle for intratracheal steroid in the treatment of other types of ALI. This study investigated the efficacy of intratracheal budesonide (BUD) delivered by two concentrations of surfactant in the treatment of LPS-induced ALI in surfactant-insufficient rat lungs. Methods: Male adult rats were anesthetized and ventilated. Our ALI model was established by repeated saline lavage to produce surfactant insufficiency, followed by intratracheal LPS instillation. Five study groups (n = 5 for each) with different intratracheal treatments following ALI were used: control (no treatment), BUD (NS-BUD; BUD in saline), DS-BUD (BUD in diluted surfactant), FS-BUD (BUD in full-strength surfactant), FS (full-strength surfactant). Cardiopulmonary variables were monitored 4 hours post injury. Histological and immunohistochemical assessments of the lungs were performed. Results: The FS-BUD and FS groups presented better gas exchange, less metabolic acidosis, less oxygen index, and more stable hemodynamic changes than the DS-BUD, NS-BUD, and control groups. The total lung injury scores assessed by histological examination were ordered as follows: FS-BUD < DS-BUD or FS < NS-BUD < control. The immunostaining intensities of lung myeloperoxidase showed the following order: NS-BUD, DS-BUD, or FS-BUD < control or FS. Only the FS-BUD group displayed a smaller immunostaining intensity of lung tumor necrosis factor (TNF)-a than the control group. Conclusion: Among our therapeutic strategies, intratracheal BUD delivered by full-strength surfactant confers an optimal protection against LPS-induced ALI in surfactant-insufficient rat lungs. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
48. Living donor liver transplantation for small infants aged less than 6 months: The experience of a single institute.
- Author
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Yeh, Yi-Ting, Liu, Chinsu, Tsai, Hsin-Lin, Chen, Cheng-Yen, Lin, Niang-Cheng, Chang, Jei-Wen, Tsao, Pei-Chen, Lee, Yu-Sheng, Hsia, Cheng-Yuan, and Loong, Che-Chuan
- Abstract
Liver transplantation (LT) for small infants < 6 months old is rare but becoming common as perioperative care improves. In Taiwan, living donor LT (LDLT) has expanded indications but is rarely performed for this age group because of unfavorable outcomes in the literature. We evaluated LDLT outcomes of patients <6 months old. We identified infants < 6 months old undergoing LDLT between 2004 and 2019 at our hospital. Variables related to recipients, donors, surgeries, and outcomes were analyzed. Nine patients were identified. Indications for LT were biliary atresia (n = 2), Alagille syndrome (n = 1), protein C deficiency (n = 1), and acute liver failure (n = 5), including two patients with neonatal hemochromatosis, one with herpes simplex hepatitis, one with giant cell hepatitis with autoimmune hemolytic anemia, and one with hemophagocytic lymphohistiocytosis. Median age and weight at LT were 129 days and 4.8 kg, respectively. Graft types included left lateral segment (LLS, n = 4), hyper-reduced LLS (n = 4), and monosegment (n = 1). The median graft-to-recipient weight ratio was 4%. The median follow-up period was 14 months (range, 8 days to 127 months) with two mortalities, and two patients were totally weaned off immunosuppressants. Adjuvant therapies were required for patients with giant cell hepatitis and hemophagocytosis. Preoperative reconstructive imaging for estimating graft thickness facilitated surgical planning. Although LDLT is difficult to perform for small infants, outcomes are favorable and mainly dependent on underlying causes in addition to technical innovations. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
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49. Discovery and Synthesis of a Pyrimidine-Based Aurora Kinase Inhibitor to Reduce Levels of MYC Oncoproteins.
- Author
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Chi, Ya-Hui, Yeh, Teng-Kuang, Ke, Yi-Yu, Lin, Wen-Hsing, Tsai, Chia-Hua, Wang, Wan-Ping, Chen, Yen-Ting, Su, Yu-Chieh, Wang, Pei-Chen, Chen, Yan-Fu, Wu, Zhong-Wei, Yeh, Jen-Yu, Hung, Ming-Chun, Wu, Mine-Hsine, Wang, Jing-Ya, Chen, Ching-Ping, Song, Jen-Shin, Shih, Chuan, Chen, Chiung-Tong, and Chang, Chun-Ping
- Published
- 2021
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50. Distinct protective effects of a novel Akkermansia sp. BCRC 18949 against DSS-Induced colitis in mice.
- Author
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Huang, Chien-Hsun, Huang, Chih-Ting, Tsai, Hsu-Yun, Liao, Yi-Chu, Lin, Chiao-Mei, Chen, Pei-Chen, Liou, Jong-Shian, Hsu, Chin-Lin, Chiu, Shih-Hau, Chen, Chien-Chi, Hsieh, Sung-Yuan, Zou, Hsin-Bai, Hsu, Cheng-Chih, Chen, Pai-Sheng, Kao, Cheng-Yuan, and Ruan, Jhen-Wei
- Abstract
[Display omitted] • Akkermansia sp. BCRC 18949 is a novel Akkermansia species with limited mucin-degrading ability. • Akkermansia sp. BCRC 18949 has distinct protection effects against DSS-induced colitis compared to Akkermansia muciniphila ATCC BAA-835. • Both Akkermansia species plays a role in maintaining microbiota homeostasis under DSS-induced stress. • Akkermansia sp. BCRC 18949 could restore the expression of colonic rhythmic genes in DSS-treated mice. The emergence of next-generation probiotics (NGPs) has illuminated new possibilities for improving various diseases through food-grade supplements. In this study, a new gut bacterial species, designated as Akkermansia sp. BCRC 18949, was isolated from the feces of a healthy Taiwanese adult. The phylogenetic tree and whole genome sequencing analyses confirmed that this human commensal is a novel species belonging to the genus Akkermansia. Our results reveals that BCRC 18949 exhibits distinct mucin utilization abilities compared to ATCC BAA-835. Importantly, BCRC 18949 shows enhanced protection against DSS-induced colitis, while both species contribute differentially to restoring barrier integrity in DSS-treated mice. Furthermore, BCRC 18949 significantly restores the expression of colonic rhythmic genes, suggesting its potential role in maintaining circadian rhythm in the colon during colitis. Our findings provide valuable insights into the functional diversity of Akkermansia species and their potential therapeutic applications for colitis. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
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