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Chia-Yuan Chen,Kerem Pekkan 한국바이오칩학회 2013 BioChip Journal Vol.7 No.2
Bio-inspired studies of micro-objects in microfluidics demand quantitative microflow visualization tools to evaluate their three-dimensional (3D)fluid dynamic performance. Experimental fluid dynamic measurements of bio-hybrid systems are employed when non-traditional small-scales, magnetohydrodynamic coupling and nonlinear material properties are involved. In this study a stereoscopic micro-Particle Image Velocimetry (μPIV) system was developed to characterize instantaneous flow fields induced by (1) a micro-robot (280×200×150 μm3) and (2)self-assembled magnetically actuated artificial cilia (~50 μm in diameter and 500 μm in depth). A custom built micro jet flow microchannel was tested to provide the quantitative evidence of measurement accuracy with 14% error compared to theoretical solutions in the out-of-plane velocity component. Followed by these verification experiments, instantaneous in-plane spinning motion was analyzed in conjunction with translational movement and out-of-plane rotational movements of the micro-robot to obtain the induced 2D-3C (two-dimension, three-component) fluid velocity data. The second test case investigated the microscale vortical flow structures that were generated by self-assembled magnetically driven artificial cilia. The strength of this 3D micro vortex structure was computed based on the 3D flow measurements. In combination with the asymmetric cyclic motion of the magnetically actuated artificial cilia, it is expected that these structures can generate transverse flow efficiently in 3D, and thus provide a potential alternative for mixing in low Reynolds number flows, analogous to a micromixer. The acquired 3D microflow field, along with the validation tests, further extends the capability of using stereoscopic μPIV technique to evaluate the performance of noninvasive microflow manipulators.
( Chen-hua Liu ),( Chi-yi Chen ),( Wei-wen Su ),( Chun-jen Liu ),( Ching-chu Lo ),( Ke-jhang Huang ),( Jyh-jou Chen ),( Kuo-chih Tseng ),( Chi-yang Chang ),( Cheng-yuan Peng ),( Yu-lueng Shih ),( Chia 대한간학회 2021 Clinical and Molecular Hepatology(대한간학회지) Vol.27 No.4
Background/Aims: Real-world studies assessing the effectiveness and safety of sofosbuvir/velpatasvir (SOF/VEL) plus ribavirin (RBV) for Child-Pugh B/C hepatitis C virus (HCV)-related cirrhosis are limited. Methods: We included 107 patients with Child-Pugh B/C HCV-related cirrhosis receiving SOF/VEL plus RBV for 12 weeks in Taiwan. The sustained virologic response rates at off-treatment week 12 (SVR<sub>12</sub>) for the evaluable population (EP), modified EP, and per-protocol population (PP) were assessed. The safety profiles were reported. Results: The SVR<sub>12</sub> rates in the EP, modified EP and PP were 89.7% (95% confidence interval [CI], 82.5-94.2%), 94.1% (95% CI, 87.8-97.3%), and 100% (95% CI, 96.2-100%). Number of patients who failed to achieve SVR<sub>12</sub> were attributed to virologic failures. The SVR<sub>12</sub> rates were comparable regardless of patient characteristics. One patient discontinued treatment because of adverse events (AEs). Twenty-four patients had serious AEs and six died, but none were related to SOF/VEL or RBV. Among the 96 patients achieving SVR<sub>12</sub>, 84.4% and 64.6% had improved Child-Pugh and model for endstage liver disease (MELD) scores. Multivariate analysis revealed that a baseline MELD score ≥15 was associated with an improved MELD score of ≥3 (odds ratio, 4.13; 95% CI, 1.16-14.71; P=0.02). Patients with chronic kidney disease (CKD) stage 1 had more significant estimated glomerular filtration rate declines than patients with CKD stage 2 (-0.42 mL/min/1.73 ㎡/month; P=0.01) or stage 3 (-0.56 mL/min/1.73 ㎡/month; P<0.001). Conclusions: SOF/VEL plus RBV for 12 weeks is efficacious and well-tolerated for Child-Pugh B/C HCV-related cirrhosis. (Clin Mol Hepatol 2021;27:575-588)
( Horng Yuan Wang ),( Shou Chuan Shih ),( Chien Yuan Hung ),( Chia Yuan Liu ),( Tze Yu Shieh ),( Ming Jen Chen ) 대한소화기학회 2014 Gut and Liver Vol.8 No.6
Background/Aims: In endoscopic submucosal dissection (ESD) training, only a flat target lesion can usually be simulated in the normal mucosa. This study aimed to evaluate the feasibility of simulated targets in the stomachs of live pigs for complete training. Methods: Six trained endoscopists with hands-on experience with ex vivo, isolated pig stomachs were enrolled in this pilot study. An endoscopic banding device was used to create a polyp that was snared, leaving an ulcerated lesion. This simulated target model was used to perform ESD in pigs. The en bloc resection rate, procedure time, complications, quality of resection, and participants` opinions on the simulated targets were compared with the conventional model. Results: En bloc resections were achieved in all six simulated targets and six conventional models. The mean size of the resected specimens was 32.2 mm (range, 20 to 39 mm) in the simulated target group and 23.5 mm (range, 11 to 40 mm) in the conventional group. The target model had a high quality of resection and had a high satisfaction rate for margin identification and correct peripheral marking. Conclusions: Good identification of the lesion and ease of periphery marking in the target model may improve resection quality. (Gut Liver 2014;8:619-624)
Eunice Jia-Shiow Yuan,Shiau-Shian Huang,Chia-An Hsu,Jiing-Feng Lirng,Tzu-Hao Li,Chia-Chang Huang,Ying-Ying Yang,Chung-Pin Li,Chen-Huan Chen 한국보건의료인국가시험원 2023 보건의료교육평가 Vol.20 No.-
Purpose Coronavirus disease 2019 (COVID-19) has heavily impacted medical clinical education in Taiwan. Medical curricula have been altered to minimize exposure and limit transmission. This study investigated the effect of COVID-19 on Taiwanese medical students’ clinical performance using online standardized evaluation systems and explored the factors influencing medical education during the pandemic. Methods Medical students were scored from 0 to 100 based on their clinical performance from 1/1/2018 to 6/31/2021. The students were placed into pre-COVID-19 (before 2/1/2020) and midst-COVID-19 (on and after 2/1/2020) groups. Each group was further categorized into COVID-19-affected specialties (pulmonary, infectious, and emergency medicine) and other specialties. Generalized estimating equations (GEEs) were used to compare and examine the effects of relevant variables on student performance. Results In total, 16,944 clinical scores were obtained for COVID-19-affected specialties and other specialties. For the COVID-19-affected specialties, the midst-COVID-19 score (88.51–3.52) was significantly lower than the pre-COVID-19 score (90.14–3.55) (P<0.0001). For the other specialties, the midst-COVID-19 score (88.32–3.68) was also significantly lower than the pre-COVID-19 score (90.06–3.58) (P<0.0001). There were 1,322 students (837 males and 485 females). Male students had significantly lower scores than female students (89.33–3.68 vs. 89.99–3.66, P=0.0017). GEE analysis revealed that the COVID-19 pandemic (unstandardized beta coefficient=-1.99, standard error [SE]=0.13, P<0.0001), COVID-19-affected specialties (B=0.26, SE=0.11, P=0.0184), female students (B=1.10, SE=0.20, P<0.0001), and female attending physicians (B=-0.19, SE=0.08, P=0.0145) were independently associated with students’ scores. Conclusion COVID-19 negatively impacted medical students' clinical performance, regardless of their specialty. Female students outperformed male students, irrespective of the pandemic.
Yuan-Hwa Chou,Po-Chung Chu,Szu-Wei Wu,Jen-Chin Lee,Yi-Hsuan Lee,I-Wen Sun,Chen-Lin Chang,Chien-Liang Huang,I-Chao Liu,Chia-Fen Tsai,Yung-Chieh Yen 대한정신약물학회 2015 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.13 No.2
Bipolar disorder (BD) is a major psychiatric disorder that is easily misdiagnosed. Patient adherence to a treatment regimen is of utmost importance for successful outcomes in BD. Several trials of antipsychotics suggested that depot antipsychotics, including long-acting first- and second-generation agents, are effective in preventing non-adherence, partial adherence, and in reducing relapse in BD. Various long-acting injectable (LAI) antipsychotics are available, including fluphenazine decanoate, haloperidol decanoate, olanzapine pamoate, risperidone microspheres, paliperidone palmitate, and aripiprazole monohydrate. Due to the increasing number of BD patients receiving LAI antipsychotics, treatment guidelines have been developed. However, the clinical applicability of LAI antipsychotics remains a global cause for concern, particularly in Asian countries. Expert physicians from Taiwan participated in a consensus meeting, which was held to review key areas based on both current literature and clinical practice. The purpose of this meeting was to generate a practical and implementable set of recommendations for LAI antipsychotic use to treat BD; target patient groups, dosage, administration, and adverse effects were considered. Experts recommended using LAI antipsychotics in patients with schizophrenia, rapid cycling BD, BD I, and bipolar-type schizoaffective disorder. LAI antipsychotic use was recommended in BD patients with the following characteristics: multiple episodes and low adherence; seldom yet serious episodes; low adherence potential per a physician’s clinical judgment; preference for injectable agents over oral agents; and multiple oral agent users still experiencing residual symptoms.
Chia, Elbert E. M.,Talbayev, D.,Zhu, Jian-Xin,Yuan, H. Q.,Park, T.,Thompson, J. D.,Panagopoulos, C.,Chen, G. F.,Luo, J. L.,Wang, N. L.,Taylor, A. J. American Physical Society 2010 Physical Review Letters Vol.104 No.2
<P>We report measurements of quasiparticle relaxation dynamics in the high-temperature superconductor (Ba,K)Fe2As2 in optimally doped, underdoped, and undoped regimes. In the underdoped sample, spin-density wave (SDW) order forms at approximately 85 K, followed by superconductivity at approximately 28 K. We find the emergence of a normal-state order that suppresses SDW at a temperature T{*} approximately 60 K and argue that this normal-state order is a precursor to superconductivity.</P>
Human-Oriented Recognition for Intelligent Interactive Office Robot
Chia-Ming Wang,Shin-Huan Tseng,Pei-Wen Wu,Yuan-Han Xu,Chien-Ke Liao,Yu-Chi Lin,Yi-Shiu Chiang,Chung-Dial Lim,Ting-Sheng Chu,Li-Chen Fu 제어로봇시스템학회 2013 제어로봇시스템학회 국제학술대회 논문집 Vol.2013 No.10
This paper presents our new intelligent interactive robot, which is constructed to eagerly provide multi-functional services in an office environment. In order to endow a full interactive capability of our robots for realizing so-called human-robot interaction (HRI), we propose sensor fusion based human detection and tracking system and human pose estimation to deal with a number of situations which may take place in the office environment. Not only by these perceptions, human interact with the robot also by some natural way, such as touching the interface screen and talking with the robot through microphone. Finally, the effectiveness of the proposed work is tested and validated by some of experiments.