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481 results on '"Chen, Wei-Ying"'

1. The self-annealing of irradiation induced defects in magnetite Fe3O4: Revealing reversible irradiation-induced disorder transformation through in situ TEM.

Author

Lopez Morales, Angelica M., Chen, Wei-Ying, and Kaoumi, Djamel

Abstract

This work reports heavy ion-irradiation effects in polycrystalline Fe3O4. For this matter, Fe/Fe3O4 heterostructures were irradiated in situ in a transmission electron microscopy with 1 MeV Kr ions at 50 K. Evidence of cubic to monoclinic transformation (a.k.a Verwey transition) was recorded in some magnetite grains upon cooling the sample (around 90 K); however, most of the oxide grains retain their cubic spinel structure. Irradiation effects were analyzed in the cubic phase up to a maximum dose of 38 dpa without the sign of amorphization. The extinction of first-order reflections was recorded at doses below 1 dpa, indicating the formation of a new (metastable) phase with half of the lattice parameters compared to the unirradiated Fe3O4 crystal. The formation of the new crystalline phase, which also presents a high resistance to amorphization, is related to the disordering of the cation lattice and the high mobility of the cation interstitials. The metastable phase readily recovers around 225 K during the natural warming of the sample from 50 K to room temperature. [ABSTRACT FROM AUTHOR]

Published
2024
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7. Precise application of topical tranexamic acid to enhance endoscopic hemostasis for peptic ulcer bleeding: a randomized controlled study (with video)

Author

Chiang, Hsueh-Chien, Chen, Po-Jun, Yang, Er-Hsiang, Hsieh, Ming-Tsung, Shih, I-Cheng, Cheng, Hsiu-Chi, Chang, Wei-Lun, Chen, Wei-Ying, Chiu, Hung-Chih, Kuo, Hsin-Yu, Tsai, Wei-Chu, Lo, Yi-Ning, Yang, Kai-Chun, Chiang, Chien-Ming, Chen, Wei-Chih, Huang, Kuan-Kai, Tseng, Hsu-Huan, Chen, Chiung-Yu, Lin, Xi-Zhang, and Chuang, Chiao-Hsiung

Published
2023
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15. Can the Finger-Nose-Finger Task Be Used to Identify School-Aged Children with Probable Developmental Coordination Disorder?

Author

Li, Yao-Chuen, Chen, Wei-Ying, Zhu, Yi-Ching, and Wu, Sheng K

Abstract

This study aimed to investigate whether the Finger-Nose-Finger (FNF) task could be a potential test to identify school-aged children with probable Developmental Coordination Disorder (pDCD) from a large population. This study recruited 1365 nine to twelve years old children, 362 of whom were identified as pDCD using the Movement Assessment Battery for Children (MABC) test. An instrument was designed to conduct the FNF task. The times performed by the dominant hand (DH) and the non-dominant hand (NDH) in 30 seconds were recorded, as well as the Sum of both hands. The results showed that school-aged children with pDCD had significantly poor performance on DH, NDH, and Sum of the FNF task compared to typically developing children (all p's <0.001). However, the FNF task showed low sensitivity (24.9%) and low diagnostic rate (65.7%) against the MABC test, even though there was a significant moderate correlation between both tests (r = -0.300, p < 0.001). Taken together, even though school-aged children with pDCD perform worse on the FNF task, this task may not be sensitive enough to identify children with pDCD. Other testing items assessing other motor aspects, specifically balance, should be included and validated.

Published
2021
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43. The nonadherence and risk factors of eradication failure by sequential therapy as first‐line anti‐Helicobacter pylori treatment in real‐world clinical practice.

Author

Lee, Chun‐Te, Wu, Chung‐Tai, Chang, Wei‐Lun, Yang, Er‐Hsiang, Hsieh, Ming‐Tsung, Chen, Wei‐Ying, Sheu, Bor‐Shyang, and Cheng, Hsiu‐Chi

Subjects
HELICOBACTER pylori infections, PATIENT compliance, HELICOBACTER pylori, MEDICATION reconciliation, TREATMENT failure, ODDS ratio
Abstract

Background: The eradication rates of sequential therapy are high in clinical trials; however, the adherence for follow‐up or the patient population in a real‐world setting might be different from those in trails. This study investigates the effectiveness of sequential therapy in a real‐world setting and the factors that lead to treatment failure. Materials and Methods: In this retrospective study, patients receiving sequential therapy as a first‐line anti‐Helicobacter pylori (H. pylori) treatment in a real‐world setting were reviewed. The age adjusted Charlson Comorbidity Index (age‐CCI) and baseline variety of medications were reviewed to determine factors correlated with nonadherence for post‐treatment testing and H. pylori eradication failure. Results: A total of 1053 patients were reviewed. A total of 579 patients receiving sequential therapy were included in the analyses. Among them, 462 received post‐treatment testing and were placed into the follow‐up group. Thus, the post‐treatment testing rate was 79.8%. Stroke was an independent factor of nonadherence for post‐treatment testing. In the follow‐up group, the eradication failure rate was 8.2%. Female sex (odds ratio [OR] 2.41 [95% CI 1.16–5.03], p = 0.02) and age‐CCI ≥2 (OR 3.16 [1.05–9.48], p = 0.04) were independent factors of H. pylori eradication failure. The eradication failure rates were 14.4%, 7.8%, 7.1%, and 3.1% for the females with age‐CCI ≥2, females with age‐CCI <2, males with age‐CCI ≥2, and males with age‐CCI <2 subgroups, respectively (p = 0.027). Conclusions: In a real‐world setting, the adherence rate of post‐treatment testing for sequential therapy as a first‐line anti‐H. pylori treatment was found to be suboptimal. Female sex and age‐CCI ≥2 were independent factors of eradication failure. [ABSTRACT FROM AUTHOR]

Published
2024
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