5,098 results on '"Lien IN"'
Search Results
2. Conformational Analysis of Swallowtail Motifs in Porphyrins.
- Author
-
Cao, Phuong-Lien Doan, Chau Nguyen, Khiem, Nevzorov, Alexander A., Jovanovic, Milena, Nalaoh, Phattananawee, and Lindsey, Jonathan S.
- Published
- 2025
- Full Text
- View/download PDF
3. Effects of Diabetes and Attentional Focus on Learning of a Novel Balance Task.
- Author
-
Lee, Szu-Ping, Shih, Hui-Ting, Wu, Fu-Lien, Armagnac, Rebeca, Lee, Yinny, Letkiewicz, Alicia, Mamauag, Mieko, Hooyman, Andrew, and Winstein, Carolee
- Abstract
Background and Purpose: Chronic diabetes is a prevalent systemic disease that impairs neuromotor functioning and often leads to increased risk of falls. Adopting an external focus of attention during motor skill practice has been shown to improve learning outcomes; however, it has not been examined in this population. We examined how attentional focus instructions (internal vs external) affect balance performance and learning in older adults with and without diabetes. Methods: Fifty-three older adults (27 with diabetes, 63.7 ± 7.0 years) participated in the randomized, pre-post intervention study. The balance training involved 50 practice trials of a stabilometer task that was novel to all participants. Participants were randomized to receive either internal or external focus task instruction. Task performance was assessed at baseline, during training, and during a retention test. Primary outcomes were changes in balance task performance before and after training. Results: Participants who received external focus instruction showed a significantly greater increase in balance performance than individuals who received internal focus instruction (95% confidence interval, 0.02-4.05; P = 0.048). While participants with diabetes exhibited poorer baseline task performance (P = 0.02), both groups improved their relative task performance after training (95% confidence interval, 5.25-18.14; P < 0.0001). Discussion and Conclusions: Adopting an external focus of attention benefits performance during short-term training of a novel balance task in older adults with and without diabetes. Participants with diabetes were capable of learning the challenging balance task with practice, at a relative rate similar to those without diabetes. This information may be useful for designing interventional strategies to improve physical function and mitigate fall risks in older adults with diabetes. [ABSTRACT FROM AUTHOR]
- Published
- 2025
- Full Text
- View/download PDF
4. The Correlation Between Fear Avoidance Beliefs and Physical Activity in Unilateral Vestibulopathies.
- Author
-
Van Laer, Lien, Koppelaar-van Eijsden, Hanna M., Hallemans, Ann, Van Rompaey, Vincent, Schermer, Tjard R., Bruintjes, Tjasse D., and Vereeck, Luc
- Abstract
Background and Purpose: In individuals with unilateral vestibulopathy (UVP), physical activity (PA) is recommended to stimulate central vestibular compensation. However, the presence of fear avoidance beliefs might negatively influence PA. The objectives of this study were to investigate the relationship between fear avoidance beliefs and PA and to compare PA levels between individuals with UVP in an acute/subacute vs chronic phase. Methods: In this cross-sectional study, PA was measured using a triaxial accelerometer. Fear avoidance beliefs were quantified using the Vestibular Activities Avoidance Instrument. The correlation between fear avoidance beliefs and PA was evaluated using regression analyses, with other potential influencing factors also considered. Results: A total of 102 participants were included. The average age was 56.1 (SD 15.2) years, and 57.8% were male. Participants with chronic UVP presented with shorter sedentary time (4,591 vs 5129 min/wk; P = 0.004), longer standing time (1443 vs 1165 min/wk; P = 0.025), higher vigorous PA (187 vs 107 min/wk; P = 0.005), and higher total PA (773 vs 623 min/wk; P = 0.003) compared to participants with acute/subacute UVP. In participants with acute/subacute UVP, variability in total PA was explained up to 54.7% by fear avoidance beliefs, etiology of the UVP, and gender (R
2 = 0.547, F4,45 = 13.6, P < 0.001). In participants with chronic UVP, fear avoidance beliefs explained 4.1% of the variability in total PA (R2 = 0.041, F1,49 = 2.086, P = 0.155). Discussion and Conclusions: In acute/subacute UVP, assessing fear avoidance beliefs helps to understand physical inactivity. In chronic UVP, no significant association between fear avoidance beliefs and PA was observed. for more insights from the authors (see the video, Supplemental Digital Content, available at: http://links.lww.com/JNPT/A488). [ABSTRACT FROM AUTHOR]- Published
- 2025
- Full Text
- View/download PDF
5. Processable Coordination Polymer Inks for Highly Conductive and Robust Coatings.
- Author
-
Crossland, Patrick M., Lien, Chen-Yu, de Jong, Liam O., Spellberg, Joseph L., Czaikowski, Maia E., Wang, Lei, Filatov, Alexander S., King, Sarah B., and Anderson, John S.
- Published
- 2024
- Full Text
- View/download PDF
6. Prevention of Muscle Atrophy by Low-Molecular-Weight Fraction from Hirsutella sinensis Mycelium.
- Author
-
Chen, Yi-Wen, Li, Tsung-Ju, Wang, Li-Ching, Yang, Bi-Hua, Chen, Yen-Lien, Chen, Chin-Chu, and Lin, Hsin-Tang
- Published
- 2024
- Full Text
- View/download PDF
7. Rising incidence of gonorrhea in Taiwan amid the COVID-19 pandemic: a nationwide surveillance study.
- Author
-
Chen, Hsing-Yuan, Sung, Yi-Hsiang, Chen, Chung-Chu, Weng, Shun-Long, Liou, Bo-Huang, Yeung, Chun-Yan, Lien, Chi-Hone, Lin, Chao-Hsu, Chi, Hsin, Lin, Liang-Yen, Chiu, Nan-Chang, and Lin, Chien-Yu
- Abstract
Background: The protracted battle against coronavirus disease 2019 (COVID-19) has had a profound impact on various facets of society. The epidemiology of several diseases underwent alterations following the implementation of social restrictive strategies and non-pharmaceutical interventions (NPI). Methods: In response to these changes, we conducted a retrospective nationwide surveillance study to investigate the prevalence of sexually transmitted infections during the pandemic. Weekly incidences of gonorrhea, syphilis, human immunodeficiency virus (HIV), and enterovirus were extracted from the national surveillance database. Results: Over the period from 2015 to 2022, a sustained increase in gonorrhea notifications was evident (linear trend with a rising slope of 0.24 and an R-squared value of 0.62). When comparing the pre-pandemic period (2017–2019) with the pandemic period (2020–2022), a significant surge in gonorrhea notifications was observed (85 notifications per week pre-pandemic vs 143 notifications during the pandemic, representing a 68% increase, P < 0.01). Further interrupted time series analysis revealed a significant monthly increase of 3.79 gonorrhea notifications during the pandemic. Conversely, declines in syphilis, HIV, and enterovirus incidences were noted (186 vs 177, 41 vs 25, and 3906 vs 2863 weekly notifications for syphilis, HIV, and enterovirus, respectively). A literature review indicated conflicting epidemiological trends in different regions. Conclusions: Our study highlights a significant rise in gonorrhea notifications during the pandemic. Despite disruptions to gonorrhea testing and medical services, and the implementation of NPI, there was no significant decrease in the incidence of gonorrhea in Taiwan. Gonorrhea emerged as a critical public health concern during the pandemic. Amid the COVID-19 pandemic, societal shifts prompted a retrospective study on sexually transmitted infections in Taiwan. Gonorrhea cases surged despite pandemic measures, contrasting declines in syphilis, HIV, and enterovirus during the pandemic. This highlights gonorrhea's resilience and calls for deeper investigations into its dynamics amid crises. The study underscores the complexity of public health management during pandemics and emphasizes the importance of comprehensive surveillance. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
8. Self-similar solutions of the relativistic Euler system with spherical symmetry.
- Author
-
Lu, Bing-Ze, Kao, Chou, and Lien, Wen-Ching
- Subjects
ULTRASONIC waves ,SPECIAL relativity (Physics) ,SUPERSONIC flow ,FLUID dynamics ,SPEED of light - Abstract
We consider the spherical piston problem in relativistic fluid dynamics. When the spherical piston expands at a constant speed, we show that the self-similar solution with a shock front exists under the relativistic principle that all velocities are bounded by the light speed. The equation of state is given by P= \sigma ^2 \rho, where \sigma, the sound speed, is a constant. It is an important model describing the evolution of stars. Also, we present the global existence of BV solutions for the relativistic Euler system given that the piston speed is perturbed around a constant in a finite time interval. The analysis is based on the modified Glimm scheme and the smallness assumption is required on the initial data. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
9. Development and Evaluation of a Novel Resuscitation Teamwork Model for Out-of-Hospital Cardiac Arrest in the Emergency Department
- Author
-
Chong, Kah Meng, Chou, Eric Hao-Chang, Chiang, Wen-Chu, Wang, Hui-Chih, Liu, Yeh-Ping, Ko, Patrick Chow-In, Huang, Edward Pei-Chuan, Hsieh, Ming-Ju, Lin, Hao-Yang, Lien, Wan-Ching, Huang, Chien-Hua, Fang, Cheng-Chung, Chen, Shyr-Chyr, Bhanji, Farhan, Yang, Chih-Wei, and Ma, Matthew Huei-Ming
- Abstract
Cardiopulmonary resuscitation (CPR) is critical for out-of-hospital cardiac arrest patients but is prone to rapid changes and errors. Effective teamwork and leadership are essential for high-quality CPR. We aimed to introduce the Airway-Circulation-Leadership-Support (A-C-L-S) teamwork model in the emergency department (ED) to address these challenges.
- Published
- 2025
- Full Text
- View/download PDF
10. Presence and extent of lymphovascular invasion in surgical stage I squamous cell carcinoma of the cervix: a comprehensive, international, multicentre, retrospective clinicopathological study
- Author
-
Stolnicu, Simona, Allison, Douglas, Tessier-Cloutier, Basile, Momeni-Boroujeni, Amir, Hoang, Lien, Ieni, Antonio, Felix, Ana, Terinte, Cristina, Pesci, Anna, Mateoiu, Claudia, Hodgson, Anjelica, Guerra, Esther, de Brot, Louise, Lastra, Ricardo R., Kiyokawa, Takako, Ali-Fehmi, Rouba, Kheil, Mira, Dundr, Pavel, Roma, Andres, Fadare, Oluwole, Turashvili, Gulisa, Oliva, Esther, Devins, Kyle M., Baiocchi, Glauco, Cibula, David, and Soslow, Robert A.
- Abstract
The aim of this study was to determine whether the presence and extent of lymphovascular invasion (LVI) is prognostic in surgical stage I cervical squamous cell carcinoma (SCC). All available tumour slides and/or paraffin blocks from 426 patients with stage I cervical SCC treated surgically with curative intent were collected from 18 institutions and retrospectively analysed. Presence and extent of LVI (focal <5 spaces, extensive ≥5 spaces) were assessed on scanning magnification in large haematoxylin and eosin slide sets in 366 cases. Progression-free survival (PFS) was calculated as the time from surgery to first progression or death or last follow-up, whichever occurred first. Overall survival (OS) was defined as the time from surgery to death or last follow-up. Clinicopathological and statistical analyses were performed on 97 patients with the International Federation of Gynecology and Obstetrics (FIGO) 2018 stage IA and 329 patients with stage IB SCC of the cervix. LVI, both focal and extensive, was more frequent in stage IB than in stage IA (p<0.001). Patients with stage IB carcinomas with extensive LVI had worse PFS [hazard ratio (HR) 2.86; 95% confidence interval (CI) 1.49, 5.49; p=0.005] and OS (HR 2.88; 95% CI 1.38, 6.02; p=0.012) than those with focal or no LVI. In stage IA, in contrast, the presence and extent of LVI did not associate with PFS (p=0.926) or OS. Extensive LVI was not statistically correlated with PFS and OS in substages IA1, IA2 or IB2. PFS (HR 3.7; 95% CI 1.61, 8.46; p<0.001) and OS (HR 4.18; 95% CI 1.58, 11.04; p=0.002) in stage IB1, and PFS (HR 7.78; 95% CI 0.87, 69.82; p=0.039) in stage IB3 were diminished in the presence of extensive LVI. In conclusion, in patients with FIGO stage I cervical SCC, the presence and extent of LVI has prognostic significance in stage IB carcinoma, and quantifying LVI is recommended.
- Published
- 2025
- Full Text
- View/download PDF
11. HfO2Memristor-Based Flexible Radio Frequency Switches
- Author
-
Chen, Shih-Chieh, Yang, Yu-Tao, Tseng, Yun-Chien, Chiou, Kun-Dong, Huang, Po-Wei, Chih, Jia-Hao, Liu, Hsien-Yang, Chou, Tsung-Te, Jhang, Yang-Yu, Chen, Chien-Wei, Kuan, Chun-Hsiao, Ho, E Ming, Chien, Chao-Hsin, Kuo, Chien-Nan, Cheng, Yu-Ting, and Lien, Der-Hsien
- Abstract
Flexible and wearable electronics are experiencing rapid growth due to the increasing demand for multifunctional, lightweight, and portable devices. However, the growing demands of interactive applications driven by the rise of AI reveal the inadequate connectivity of current connection technologies. In this work, we successfully leverage memristive technology to develop a flexible radio frequency (RF) switch, optimized for 6G-compatible communication systems and adaptable to flexible applications. The flexible RF switch demonstrates a low insertion loss (2 dB) and a cutoff frequency exceeding 840 GHz, and performance metrics are maintained after 106switching cycles and 2500 mechanical bending cycles, showing excellent reliability and robustness. Furthermore, the RF switch is fully integrable with a photolithography-processable polyimide (PSPI) substrate, enabling efficient 2.5D integration with other RF components, such as RF antennas and interconnects. This technology holds significant promise to advance 6G communications in flexible electronics, offering a scalable solution for high-speed data transmission in next-generation wearable devices.
- Published
- 2025
- Full Text
- View/download PDF
12. Determination on precipitable water vapor from ground-based GNSS and COSMIC-2 radio occultation over Taiwan
- Author
-
Lin, Chen-Tsung, Tseng, Tzu-Pang, Yang, Shu-Chih, Lin, Chien-Hung, Yeh, Ta-Kang, Lien, Tzu-Yi, Tsai, Ya-Ting, Hong, Jing-Shan, and Yang, Shu-Chih
- Published
- 2025
- Full Text
- View/download PDF
13. Optical thermal vacuum test for the FORMOSAT-8 optical system assembly
- Author
-
Xiong, Xiaoxiong, Kimura, Toshiyoshi, Huang, Po-Hsuan, Huang, Yi-Kai, Huang, Po-Hsuan, Chou, Chun-Han, Lin, Po-Ming, Liao, Shih-Fang, Li, Tse, Yu, Tan-Ying, Cheng, Wei-Hsun, Lin, Sheng-Feng, Liu, Yu-Sheng, Lee, Tsung-Ping, Chen, Kai-Sheng, Lien, Chun-Chieh, Yang, Chih-Chung, and Lin, Hsin-Hung
- Published
- 2025
- Full Text
- View/download PDF
14. Conformational Analysis of Swallowtail Motifs in Porphyrins
- Author
-
Cao, Phuong-Lien Doan, Chau Nguyen, Khiem, Nevzorov, Alexander A., Jovanovic, Milena, Nalaoh, Phattananawee, and Lindsey, Jonathan S.
- Abstract
Aqueous solubilization of porphyrins, often accomplished with appended polar aryl groups, can also be achieved with symmetrically branched alkyl (i.e., swallowtail) groups terminated with polar moieties. Here, carboxylic acids are employed as termini (versus prior phosphono- or phosphoester termini) in designs of trans-AB-porphyrins bearing a single swallowtail group (A) or trans-A2-porphyrins bearing two swallowtail groups. Variable-temperature 1H NMR studies (−60 to 97 °C) revealed that the 4-heptanedioic acid group at the meso-position of the free base porphyrin rotates with rate constant 5 s–1(310 K) and Arrhenius energy barrier Ea= 11.5 kcal/mol, whereas an isopropyl group undergoes rotation ∼1000-times faster (k= 5770 s–1). The interconversion is sufficiently fast that conformational diastereomers, as when two such swallowtail groups are present in a trans-A2-porphyrin, would not be isolable at room temperature (Class I atropisomers). DFT calculations (4 porphyrins containing the isopropyl or 4-heptanedioic acid groups) showed that the lowest energy conformer contains the swallowtail C–H unit in the plane of the porphyrin. The presence of one or two 4-heptanedioic acid moieties imparted solubility of the porphyrin in phosphate-buffered saline (PBS). The results suggest applications in the life sciences where compact, aqueous-soluble porphyrins are desired.
- Published
- 2025
- Full Text
- View/download PDF
15. Toward Intelligent Non-Terrestrial Networks Through Symbiotic Radio: A Collaborative Deep Reinforcement Learning Scheme
- Author
-
Cao, Yang, Lien, Shao-Yu, Liang, Ying-Chang, and Niyato, Dusit
- Abstract
With the merit of global coverage, non-terrestrial networks (NTNs) with low-earth-orbit (LEO) satellite constellations have been regarded as a promising innovation to support ubiquitous connectivity. However, due to the high orbital velocity, each LEO satellite can only service a different set of ground terminals (GTs) for few minutes, and thus it is difficult to utilize machine learning (ML) based and non-ML based algorithms to tackle high-dimensional resource optimizations within such a short dwell duration. To tackle this challenge, an effective solution lies in constructing collaborations between multiple LEO satellites and GTs to jointly address the resource optimization. In this article, motivated by the mutualism advantage in symbiotic radios, we therefore propose a novel collaborative learning scheme for implementing intelligent NTNs, in which each GT with powerful computing capability operates a groundtier learning agent to assist LEO satellites tackling GT resource allocation tasks. Each LEO satellite also operates as a space-tier learning agent and the learning model of the LEO satellite can be transferred to its successor satellite as a starting point to continue updating the learning model. Finally, comprehensive simulations are conducted with a Walker-Delta satellite constellation and a channel model composed of free-space path-loss and Rician fading, and the simulation results show that the proposed scheme outperforms DRL benchmarks with more than 5.9% improvements toward the optimal average overall throughput performance over a sufficient number of elevation angle samples from the interval of [31°, 90°].
- Published
- 2025
- Full Text
- View/download PDF
16. Prescribed Performance Control Strategy for an Isolated Multi-Agent DC Microgrid
- Author
-
Soofi, Mohammad, Jalilvand, Abolfazl, Delavari, Hadi, Mobayen, Saleh, and Su, Chun-Lien
- Abstract
This paper introduces an innovative secondary control strategy to regulate bus voltage and achieve effective current sharing in an isolated multi-agent DC microgrid (MG). This MG operates through a distributed network connection. The control architecture is founded on a prescribed performance (PP) approach, wherein a transformed error algorithm is integrated into the prescribed performance control (PPC) framework to establish a novel sliding mode control (SMC). The proposed strategy is reliant solely on input/output measurement data, rendering it suitable for model-free (MF) systems. The incorporation of fractional calculus enhances the controller’s effectiveness. So, a unique sliding surface is introduced, augmenting the controller’s robustness. Additionally, this paper delves into the intricate stability analysis inherent in the data-driven nature of the controller, which combines prescribed performance sliding mode control (PP-SMC). The secondary control encompasses two distinct controllers that leverage the MF-designed controller to compute reference voltages for each distributed generator (DG). One controller is dedicated to voltage regulation, while the other ensures precise current sharing. The proposed controller proficiently curbs the progression of both bus voltage error and current sharing error within predefined thresholds. Numerous Opal-RT experimental results validate the efficacy of the proposed controller, showcasing bus voltage regulation and appropriate current sharing.
- Published
- 2025
- Full Text
- View/download PDF
17. Advancing brain immunotherapy through functional nanomaterials
- Author
-
Yalamandala, Bhanu Nirosha, Huynh, Thi My Hue, Lien, Hui-Wen, Pan, Wan-Chi, Iao, Hoi Man, Moorthy, Thrinayan, Chang, Yun-Hsuan, and Hu, Shang-Hsiu
- Abstract
Graphical Abstract:
- Published
- 2025
- Full Text
- View/download PDF
18. Heterogeneity of Strengths and Challenges in Executive Functions of Autistic Children and Adolescents
- Author
-
Sankalaite, Simona, Van Eylen, Lien, Ceulemans, Eva, Noens, Ilse, and Baeyens, Dieter
- Abstract
Objectives: Individuals with autism often experience difficulties with executive functions (EF). Some of these EF are, in turn, associated with certain behavioural autism characteristics. This study explored the intra- and inter-individual variability between autistic children in each of the EF components. Furthermore, this study aimed to delineate subgroups of autistic children and adolescents with different EF profiles and examined whether these subgroups are distinguished by differences in autism characteristics. Methods: A sample comprised 58 autistic individuals and 47 non-autistic controls, aged between 8 and 18 years. Eight lab-based EF tasks were administered to measure EF domains: working memory, inhibition, cognitive flexibility, generativity, and planning. Additionally, a parent-reported daily-life EF measure was used to assess how these abilities manifest in real-life contexts. Results: A multiple case series analysis revealed that most autistic individuals performed similarly to the non-autism group on all lab-based EF tasks, and no autistic participant experienced difficulty with all EF measures. However, most individuals seemed to face a particular challenge in daily-life EF, as reported by parents. Furthermore, a cluster analysis was performed to delineate more homogenous subgroups with similar EF profiles within the autistic group. Three subgroups were identified and characterised by (1) challenges with internally controlled cognitive flexibility and planning, (2) challenges with internally and externally controlled cognitive flexibility and (3) no EF-related difficulties. These clusters did not differ in terms of social communication and interaction; however, they significantly differed regarding restricted, repetitive patterns of behaviour and interests. Conclusions: Distinct subgroups within the autistic group with unique EF profiles (weaknesses and strengths) were identified providing insight into the specific patterns of difficulty crucial for tailor-made interventions.
- Published
- 2025
- Full Text
- View/download PDF
19. Decreasing early invasive mechanical ventilation exposure in preterm infants: a quality improvement initiative
- Author
-
Welch, Blair, Rose, Rebecca, Myers, Jessica, Drayton Jackson, Meghan, Lien, Izlin, and Barbato, Alana
- Abstract
Objective: To decrease invasive mechanical ventilation exposure in the neonatal intensive care unit (NICU) in the first week of life for preterm infants with the global aim of decreasing bronchopulmonary dysplasia (BPD). Methods: We created a quality improvement (QI) initiative to optimize early non-invasive respiratory support which launched in August 2021. Patients born at <32 weeks gestation and admitted to the NICU on non-invasive respiratory support were included. Results: Invasive mechanical ventilation exposure decreased from 38 to 25% with evidence of special cause variation beginning in August 2022. Infants born at ≥26 weeks were most impacted, with a 50% reduction, from 34 to 17%. While BPD rates decreased, there has not yet been evidence of special cause variation. Conclusion: Invasive mechanical ventilation exposure for infants born at <32 weeks gestation decreased following the creation of a QI initiative focused on optimization and standardization of early non-invasive respiratory support.
- Published
- 2025
- Full Text
- View/download PDF
20. The effect of organotitanate-modified zinc oxide nanoparticles on some characteristics and anticorrosion protection properties of epoxy coating
- Author
-
Nguyen, Chinh Thuy, Ly, Lien Thi Ngoc, Nguyen, Thai Xuan, Dao, Hung Phi, Nguyen, Son Anh, Tran, Trung Huu, Vu, Trung Quoc, Ngo, Quyen Thi Cam, Nguyen, Tan Ngoc, and Thai, Hoang
- Abstract
Surface modification of metal oxide nanoparticles can enhance their dispersibility in polymer matrix. In this study, the zinc oxide (ZnO) nanoparticles (NPs) were organically modified by coupling agent as isopropyl tri (dioctyl phosphate) titanate (KR-12) with the initial content of 3 wt.% (in comparison with ZnO NPs weight). The characteristics of modified ZnO (m-ZnO) NPs, namely chemical changes, zeta potential, morphology, and thermal behavior, were evaluated using IR spectroscopy, DLS, SEM, and TGA methods, respectively. The obtained results suggested that ZnO NPs were modified successfully with KR-12 coupling agent. In comparison with the unmodified ZnO (u-ZnO) NPs, the m-ZnO NPs had additional functional groups and there were changes of some properties such as hydrophobic property, surface charge, and thermal stability of m-ZnO NPs. The m-ZnO NPs could disperse in epoxy resin better than the u-ZnO NPs. Therefore, the m-ZnO NPs improved the mechanical properties, chemical resistance, thermal stability, and anticorrosion protection ability of epoxy resin coating. The abrasion resistance and the adhesion of epoxy coating containing 2 wt.% m-ZnO NPs were increased about 40% and 54%, respectively. The bending resistance of epoxy resin was also enhanced, and the anticorrosion resistance of coatings was improved in the presence of m-ZnO nanoparticles.
- Published
- 2025
- Full Text
- View/download PDF
21. Enhancing sustainability and machinability in electrophoretic-assisted diamond wire sawing of monocrystalline silicon wafer
- Author
-
Sefene, Eyob Messele, Chen, Chao-Chang A., and Lien, Hung-Chang
- Abstract
The urgent demand for sustainable manufacturing in semiconductor industry always conflicts with production efficiency. This study aims to assess and enhance sustainability without compromising machinability performance metrics in monocrystalline silicon (mono-Si) wafer processing, especially for diamond wire sawing (DWS) process. The DWS process has a significant gap in assessing sustainability, including processing time, energy consumption, carbon dioxide emission, machining cost, as well as integrating with machinability performance metrics, like surface roughness and diamond wire wear. Sustainability is enhanced by utilizing an electrophoretic-assisted reactive coolant and optimizing a single abrasive's material removal volume (MRV). To evaluate the proposed strategies, experiments have been conducted on a single-wire DWS machine using traditional DWS (T-DWS), electrophoretic-assisted reactive DWS (ER-DWS), and optimized electrophoretic-assisted reactive DWS (OER-DWS) cooling systems under varying processing parameters. Results reveal that the OER-DWS cooling conditions reduce the total processing time by 24.35 %, specific cutting energy by 37.53 %, carbon dioxide emission by 32.71 %, total machining cost by 8.4 %, surface roughness by 1.76 %, and wire wear by 21.95 % (in terms of tensile strength) compared to the T-DWS cooling conditions per unit wafer. Notably, employing sustainable cooling conditions and meticulously fine-tuned process parameters enhances sustainability without compromising machinability performance metrics in the DWS process.
- Published
- 2024
- Full Text
- View/download PDF
22. Gliocidin is a nicotinamide-mimetic prodrug that targets glioblastoma
- Author
-
Chen, Yu-Jung, Iyer, Swathi V., Hsieh, David Chun-Cheng, Li, Buren, Elias, Harold K., Wang, Tao, Li, Jing, Ganbold, Mungunsarnai, Lien, Michelle C., Peng, Yu-Chun, Xie, Xuanhua P., Jayewickreme, Chenura D., van den Brink, Marcel R. M., Brady, Sean F., Lim, S. Kyun, and Parada, Luis F.
- Abstract
Glioblastoma is incurable and in urgent need of improved therapeutics1. Here we identify a small compound, gliocidin, that kills glioblastoma cells while sparing non-tumour replicative cells. Gliocidin activity targets a de novo purine synthesis vulnerability in glioblastoma through indirect inhibition of inosine monophosphate dehydrogenase 2 (IMPDH2). IMPDH2 blockade reduces intracellular guanine nucleotide levels, causing nucleotide imbalance, replication stress and tumour cell death2. Gliocidin is a prodrug that is anabolized into its tumoricidal metabolite, gliocidin–adenine dinucleotide (GAD), by the enzyme nicotinamide nucleotide adenylyltransferase 1 (NMNAT1) of the NAD+salvage pathway. The cryo-electron microscopy structure of GAD together with IMPDH2 demonstrates its entry, deformation and blockade of the NAD+pocket3. In vivo, gliocidin penetrates the blood–brain barrier and extends the survival of mice with orthotopic glioblastoma. The DNA alkylating agent temozolomide induces Nmnat1expression, causing synergistic tumour cell killing and additional survival benefit in orthotopic patient-derived xenograft models. This study brings gliocidin to light as a prodrug with the potential to improve the survival of patients with glioblastoma.
- Published
- 2024
- Full Text
- View/download PDF
23. Investigating the Arc-Shaped Kink Drain Voltage of Drain Current With Capacitance-Voltage Measurement Method in GaN HEMTs
- Author
-
Hsu, Jui-Tse, Hsu, Shawn S. H., Chang, Ting-Chang, Lien, Chen-Hsin, Kuo, Ting-Tzu, Yeh, Chien-Hung, Lin, Jia-Hong, Lee, Ya-Huan, Lin, Cheng-Hsien, Hung, Wei-Chieh, and Huang, I-Yu
- Abstract
In this study, the measure-stress-measure (MSM) technique under the arc-shaped kink drain voltage (VD,kink) conditions is applied to investigate the
${\mathrm { V}}_{\mathrm { D,kink}}$ ${\mathrm { V}}_{\mathrm { D,kink}}$ ${\mathrm { V}}_{\mathrm { D,kink}}$ - Published
- 2024
- Full Text
- View/download PDF
24. Fear and Impact of COVID-19 Among Post-Infected Adults: Types and Associations with Quality of Life and Post-Traumatic Stress Symptoms
- Author
-
Do, Tinh X., Quach, Ha-Linh, Hoang, Thi Ngoc Anh, Nguyen, Thao T. P., Le, Lan T. H., Nguyen, Tan T., Do, Binh N., Pham, Khue M., Vu, Vinh H., Pham, Linh V., Nguyen, Lien T. H., Nguyen, Hoang C., Tran, Tuan V., Nguyen, Trung H., Nguyen, Anh T., Nguyen, Hoan V., Nguyen, Phuoc B., Nguyen, Hoai T. T., Pham, Thu T. M., Le, Thuy T., Tran, Cuong Q., Nguyen, Kien T., Vo, Han T., and Van Duong, Tuyen
- Abstract
Survivors of COVID-19 are susceptible to diminished health-related quality of life (HRQoL) and adverse psychological health, which may be exacerbated by their experiences of fear and the impact of the pandemic itself. This study aims to identify distinct fear and impact patterns related to the COVID-19 pandemic among survivors through latent profile analysis (LPA) and examine the associations of fear and impact patterns with post-traumatic stress symptoms (PTSS) and HRQoL. A total of 5,890 Vietnamese COVID-19 survivors completed the COVID-19 Impact Battery– Disability Scale (CIB-D), the Fear of COVID-19 Scale (FCoV-19 S), the Impact of Event Scale-Revised for PTSS, and the 36-Item Short Form Survey (SF-36) for HRQoL. Four distinct groups of fear and impact were identified: “Fearful and highly impacted” (26.8%), “moderately impacted yet not fearful” (22.9%), “less impacted and less fearful” (18.6%), and “mildly impacted and neutral” (31.7%). Survivors who were “less impacted and less fearful” exhibited significantly higher HRQoL scores (regression coefficient, B: 10.9; 95% confidence interval (CI): 10.0 − 11.7), both in terms of physical (B: 12.0; 95%CI: 11.1 − 12.9) and mental health (B: 19.4; 95%CI: 9.6 − 11.1), and lower PTSS levels (B: -24.5; 95%CI: -25.8 − -23.3) compared to those who were “highly impacted and fearful”. It is imperative to acknowledge the intricate association between fear, impact, and mental health to comprehensively address the diverse needs of this distinct population post-COVID-19. These findings provide insights for designing interventions and support mechanisms for COVID-19 survivors.
- Published
- 2024
- Full Text
- View/download PDF
25. Revolutionizing acrylic emulsion coatings: Enhancing self‐cleaning, anti‐fouling, and antibacterial qualities through fluorosurfactant integration
- Author
-
Nguyen, Tuan Anh, Oanh, Doan Thi Yen, Lien, Duong Thi, and Phuc, Bach Trong
- Abstract
Acrylic emulsion coatings are widely used for decorating and protecting construction surfaces. They offer numerous advantages such as ease of use, affordability, and environmental friendliness. However, they are susceptible to weather conditions, environmental factors, and bacterial growth, necessitating improvements to overcome these drawbacks. Fluorosurfactants are known for enhancing product performance, improving resistance to dirt, and increasing the cleaning and antibacterial properties of acrylic emulsion coatings. By effectively applying fluorosurfactants to acrylic emulsion coatings, their self‐cleaning performance can be enhanced by up to 85%. Additionally, the surface becomes highly waterproof and resistant to bacterial penetration, extending surface protection for up to 10 years.
- Published
- 2024
- Full Text
- View/download PDF
26. Dual PD-L1/SOX10 Immunohistochemistry Combined With Digital Imaging Enhances Stratification Accuracy of Patients With Metastatic Melanoma
- Author
-
Pineda-Reyes, Juan, Arudra, Sri Krishna, Aung, Phyu P., Nagarajan, Priyadharsini, Curry, Jonathan L., Tetzlaff, Michael, Prieto, Victor G., Wang, Wei-Lien, Hwu, Wen-Jen, and Torres-Cabala, Carlos A.
- Abstract
Immune checkpoint inhibitor therapy has demonstrated an overall survival benefit in patients with advanced melanoma. Though the significance of programmed death-ligand 1 (PD-L1) expression on melanoma cells as a predictive biomarker of response remains inconclusive, some reports indicate that a PD-L1 expression of <1% of tumor cells may be associated with better outcomes with dual immunotherapy. Adequate patient selection for combination therapy is critical given the higher frequency of adverse effects compared with monotherapy. Immunohistochemical (IHC) PD-L1 interpretation in tumor cells is challenging when inflammatory cells are present and cutoffs are low. We studied 36 metastatic melanoma biopsies from Immune checkpoint inhibitor–naive patients, previously stained and scored for PD-L1 IHC using the tumor proportion score (TPS). Cases were classified into 3 groups: <1%, 1% to 5%, and >5%. After de-coverslipping, SRY-related HMG-box-10 (SOX10) IHC was performed on PD-L1 IHC slides with a red chromogen, and subsequently scanned and scored by ≥2 dermatopathologists. This assessment determined that 25% of cases (9/36) had a TPS ≥ 1%, in contrast to the single IHC assay (63.8%). The majority of the 1-5% group (11/13, 84.6%) underwent a change of category to <1% TPS. In the >5% group, 60% of cases (6/10) were downgraded to <1% and 1% to 5% (4 and 2 cases, respectively). Our study suggests that PD-L1 IHC evaluation could benefit from dual PD-L1/SOX10 IHC. Dual IHC is expected to decrease the interference caused by PD-L1 expression on inflammatory cells, and digital imaging proves useful for the preservation and analysis of stains. Refining PD-L1 evaluation in metastatic melanoma may improve clinical decisions between single and combination immunotherapy, with potentially profound consequences in response and quality of life.
- Published
- 2024
- Full Text
- View/download PDF
27. An Improved Photovoltaic Differential Power Processing System Using Bidirectional Boost-Type Converters With Synchronous Switching
- Author
-
Chen, Lien-Chieh, Bagci, F. Selin, and Kim, Katherine A.
- Abstract
In photovoltaic (PV) differential power processing (DPP) systems, bidirectional flyback converters are commonly used because of their isolated structure and bidirectional power-flow capability. However, they have a coupled inductor, often with high leakage inductance that causes high power loss. This work introduces a split-inductor boost converter in combination with conventional boost converters for the PV-to-bus DPP system to replace the conventional flyback converters to achieve higher DPP system efficiency. The proposed PV-to-bus DPP system includes three different topologies of nonisolated boost converters connected together. These bidirectional converters operate in discontinuous conduction mode (DCM), and synchronous switching is utilized to further increase efficiency. To validate the proposed DPP converters, system efficiency was measured at different mismatch levels and compared to the results with flyback converters. At 50% mismatch of one PV substring (in a module of three substrings), the system efficiency reached 92.7%, which was 4.9% higher than when using flyback converters. The implemented split-inductor boost converter had a volume of 72 cm
, while the flyback converter had a volume of 141 cm$^{3}$ . Overall, this research verifies that using the DPP split-inductor boost converters with DCM synchronous switching has better performance and a smaller overall volume than using flyback converters.$^{3}$ - Published
- 2024
- Full Text
- View/download PDF
28. Analysis of the implementation of the certification of second-tier quality control in Taiwan food businesses and common non-conformities
- Author
-
Chen, Shin-Yu and Lien, Keng-Wen
- Abstract
The Taiwan Food and Drug Administration has implemented a three-tier quality control system to enhance food safety. This system includes self-management of food businesses, external certification, and government inspection. Ten categories of food businesses are required to comply with this system. By the end of 2023, over 90% of the food businesses successfully completed the second-tier certification. Statistical analysis revealed no significant correlation between non-conformity counts and factors such as capital amount, food industry type, or times of certifications. Non-conformity issues mainly arose from violations of good hygiene practices and discrepancies between the actual execution and the established hazard analysis and critical control point (HACCP) system in food businesses. These issues, potentially due to a lack of hygiene and safety awareness among employees, will not cause an immediate hazard for the time being but allow for early identification of potential risks, thereby improving overall food safety.
- Published
- 2024
- Full Text
- View/download PDF
29. Standardization of Videorecorded Speech Samples for Children with Cleft Palate: Methods to Facilitate High-Quality Speech Outcomes Data Collection
- Author
-
Baylis, Adriane L., Cummings, Caitlin E., Lien, Kari M., Sitzman, Thomas J., Kirschner, Richard E., and Chapman, Kathy L.
- Abstract
Background Collection of high-quality videorecorded speech samples is essential for speech outcomes research.Solution Cleft palate team SLPs were trained to collect standard videorecorded speech samples in the clinic setting across 20 sites in North America. Standard training and equipment was provided.What We Did That is New Quality management procedures were developed and utilized to verify video quality and protocol adherence. Over 97% of speech samples collected by trained SLPs met defined quality standards.
- Published
- 2024
- Full Text
- View/download PDF
30. A review of the solitary wasp genus Apodynerus from Vietnam (Hymenoptera: Vespidae).
- Author
-
Nguyen, Lien Thi Phuong, Tran, Ngat Thi, Nguyen, Anh Duc, and Engel, Michael S.
- Abstract
Species of the potter wasp genus Apodynerus Giordani Soika (Eumeninae: Odynerini) occurring in Vietnam are reviewed. Eight species have been collected from the study area, with four species new to science: Apodynerus angulus Nguyen & Engel sp. nov., A. gracilis Nguyen & AD Nguyen sp. nov., A. puteus Nguyen & Tran sp. nov., and A. securis Nguyen sp. nov. The new species are described and figured along with their male genitalia. Apodynerus indicus Giordani Soika, 1994 is recorded from Vietnam for the first time. The male genitalia of A. indicus , A. formosensis (von Schulthess, 1934), and A. troglodytes (de Saussure, 1855) are redescribed in detail with added characters. Apodynerus formosensis continentalis Giordani Soika, 1994 is synonymized under A. formosensis (syn. nov.). One species is removed from Apodynerus and placed elsewhere in the tribe: Paraleptomenes nitidiclypeus (Gusenleitner, 2013), comb. nov. Keys are provided to the species of the genus. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
31. Bacterial Cellulose Membrane Experimentally Implanted in the Peritoneum of Wistar Rats—Inflammatory Immunoreactivity and Oxidative Stress.
- Author
-
Santos, Karina Oliveira, Bertolo, Rebecca, de Almeida Ibanez, Natasha Lien, Alves, Mônica Rodrigues, Onuma, Tatiana Pessoa, Ribeiro, Gabriella Costa, de Souza Porto, Anna Julia, Barbeito, Cláudio Gustavo, Pinato, Luciana, Jozala, Angela Faustino, Grotto, Denise, and Hataka, Alessandre
- Published
- 2024
- Full Text
- View/download PDF
32. Nonsexual Genital Ulcers Secondary to Epstein-Barr Virus in a Pediatric Patient.
- Author
-
Morcate, Lien, Sanders, Imani, Chen, Karen Chen, Galavis, Yurima Strubinger, Villarroya-Marquina, Ines, Makkoukdji, Nadia, Alvarez, Maura, and Tolentino, Jonathan
- Abstract
This case report focuses on a rare presentation of Epstein-Barr virus as genital ulcers in a 14-year-old girl with no sexual activity history. Despite initial misdiagnosis and failed acyclovir treatment, investigations ruled out sexually transmitted causes but revealed elevated Epstein-Barr virus antibodies. Subsequent treatment with a 14-day prednisone course led to significant improvement. This case emphasizes the importance of considering nonsexual etiologies for genital ulcers to prevent delayed or inappropriate treatment and highlights the need for broader education on such atypical presentations. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
33. Comparison of flexural strength, marginal gap, and internal fit of milled and 3D-printed crown materials.
- Author
-
Firestone, Matthew, Hu, Eric, Masterson, Robert, Paek, Gen, Raimondi, Christopher, and Wen Lien
- Abstract
The purpose of this study was to compare the flexural strength, Weibull modulus (reliability), marginal gap, and internal fit (internal gap) of 4 materials for milling or 3-dimensional (3D) printing of definitive and provisional crowns: IPS e.max CAD (IEC), Paradigm MZ100 Block (PMB), Permanent Crown Resin (PCR), and Temporary CB Resin (TCR). Flexural strength was tested by subjecting sectioned milling blocks (IEC and PMB) or 3D-printed bars (PCR and TCR) to a 3-point bending test in a universal testing machine (n = 15 per material). Crowns were milled or 3D printed, and the marginal gap and internal fit were measured using microcomputed tomography (n = 5 per material). The data were analyzed with a t test and compared using analysis of variance (ANOVA) with Tukey post hoc comparisons (α = 0.05). The groups demonstrated the following mean (SD) flexural strength values: IEC, 335.50 (28.97) MPa; PMB, 154.34 (21.03) MPa; PCR, 128.09 (7.30) MPa; and TCR, 126.29 (9.23) MPa. A 1-way ANOVA revealed significant differences in the flexural strengths of sectioned and 3D-printed bars (P < 0.001). The PMB group showed the lowest Weibull modulus (8.77), indicating its poor reliability. The IEC group showed the smallest marginal gap, 53.42 (31.99) µm; this value was significantly smaller than the gap in the TCR group (P < 0.001) but not the PCR or PMB group. The PMB group had the smallest internal fit discrepancy (87.44 [37.60] µm) but was not significantly different from PCR, while TCR had a significantly greater internal fit discrepancy (130.61 [65.16] µm) than IEC, PMB, and PCR (P< 0.001). The occlusal internal fit discrepancies of 3D-printed crowns were significantly greater than those of milled crowns (P< 0.001). There was no statistically significant difference in flexural strength between the 3D-printed definitive (PCR) and provisional (TCR) materials. When the data were combined according to manufacturing method, the marginal gap and internal fit of crowns fabricated with 3D printing were comparable to those of milled crowns, and all mean marginal gaps were within a clinically acceptable limit of less than 120 µm. [ABSTRACT FROM AUTHOR]
- Published
- 2024
34. Development of a Novel Prediction Tool for Response to First-Line Treatments of Monosymptomatic Nocturnal Enuresis: A Randomized, Controlled, International, Multicenter Study (DRYCHILD).
- Author
-
Jørgensen, Cecilie Siggaard, Dossche, Lien, Zhai, Rongqun, Maternik, Michal, Kamperis, Konstantinos, Breinbjerg, Anders S., Karamaria, Sevasti, Thorsteinsson, Kristina, Borg, Britt, Wang, Yihe, Li, Shuai, Raes, Ann, Wei, Lu, Żurowska, Aleksandra, Hagstrøm, Søren, Walle, Johan Vande, Guo, Wen Jian, and Rittig, Søren
- Subjects
RECEIVER operating characteristic curves ,ENURESIS ,NOCTURIA ,DESMOPRESSIN ,PREDICTION models - Abstract
Purpose: Nocturnal urine volume and bladder reservoir function are key pathogenic factors behind monosymptomatic nocturnal enuresis (MNE). We investigated the predictive value of these together with other demographic and clinical variables for response to first-line treatments in children with MNE. Materials and Methods: A randomized, controlled, international, multicenter study was conducted in 324 treatment-naïve children (6-14 years old) with primary MNE. The children were randomized to treatment with or without prior consideration of voiding diaries. In the group where treatment choice was based on voiding diaries, children with nocturnal polyuria and normal maximum voided volume (MVV) received desmopressin (dDAVP) treatment, and children with reduced MVV and no nocturnal polyuria received an enuresis alarm. In the other group, treatment with dDAVP or alarm was randomly allocated. Results: A total of 281 children (72% males) were qualified for statistical analysis. The change of responding to treatment was 21% higher in children where treatment was individualized compared to children where treatment was randomly selected (risk ratio = 1.21 [1.02-1.45], P =.032). In children with reduced MVV and no nocturnal polyuria (35% of all children), individualized treatment was associated with a 46% improvement in response compared to random treatment selection (risk ratio = 1.46 [1.14-1.87], P =.003). Furthermore, we developed a clinically relevant prediction model for response to dDAVP treatment (receiver operating characteristic curve 0.85). Conclusions: The present study demonstrates that treatment selection based on voiding diaries improves response to first-line treatment, particularly in specific subtypes. Information from voiding diaries together with clinical and demographic information provides the basis for predicting response. Clinical Trial Registration No.: NCT03389412. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
35. Presence of Flazin in Miso and Identification of Four Tryptophan-Derived ß‑Carbolines Formed during Fermentation.
- Author
-
Li, Yu-Jang, Zhang, Ya-Ping, Chiu, Po-Chang, Lin, Shu-Mei, Lee, Chuping, Lo, Chih-Yu, Lien, Wei-Ting, and Chiou, Robin Y.-Y.
- Published
- 2024
- Full Text
- View/download PDF
36. Utilization of Degree Theses: An Analysis of Taiwan's Copyright Act and Academic Ethics.
- Author
-
Mei-Lien Hsueh and Chien Chou
- Abstract
Copyright of Journal of Educational Media & Library Sciences is the property of Journal of Educational Media & Library Sciences, Department of Information & Library Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
37. Characterisation of ciclesonide metabolism in human placentae across gestation.
- Author
-
Meakin, Ashley S., Gatford, Kathryn L., Lien, Yu-Chin, Wiese, Michael D., Simmons, Rebecca A., and Morrison, Janna L.
- Abstract
Current clinical management of pregnancies at risk of preterm delivery includes maternal antenatal corticosteroid (ACS) treatment. ACS activate the glucocorticoid receptor (GR) in all fetal tissues, maturing the lungs at the cost of impaired brain development, creating a need for novel treatments. The prodrug ciclesonide (CIC) activates the GR only when converted to des-CIC by specific enzymes, including acetylcholinesterase (ACHE) and carboxylesterase 1 and 2 (CES1, CES2). Importantly, the human placenta expresses ACHE and CES, and could potentially produce des-CIC, resulting in systemic fetal exposure and GR activation in all fetal tissues. We therefore investigated CES gene expression and conversion of CIC to des-CIC in human placentae collected during the second trimester (Tri2), and at preterm and term birth. Differential expression analysis was performed in Tri2 (n = 27), preterm (n = 34), and term (n = 40) placentae using the DESeq2 R -package. Conversion of CIC to des-CIC was measured in a subset of placenta samples (Tri2 n = 7, preterm n = 26, term n = 20) using functional assays. ACHE mRNA expression was higher in Tri2 male than preterm and term male placentae only, whereas CES1 mRNA expression was higher in Tri2 than preterm or term placentae of both sexes. Conversion of CIC to des-CIC did not differ between gestational ages. Conversion of CIC to des-CIC by the human placenta may preclude its use as a novel GR-agonist in threatened preterm birth. In vivo studies are required to confirm the extent to which placental activation occurs after maternal treatment. • Human placental ciclesonide activation decreased with increasing gestational age. • Human placenta activated ciclesonide at rates greater than reported in human lung. • Placental CES1 and ACHE expression was higher at Tri2 than later gestations. • Placental activation of ciclesonide may expose the fetus to active metabolite. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
38. Prionitosides A and B – two iridoid glycosides with anti-inflammatory and cytotoxic activities from Barleria prionitis.
- Author
-
Keomanykham, Onesy, Hoa, Le Thi Phuong, Lien, Tran Thi Bich, Anh, Hoang Tuan, Duyen, Tran My, Thi Hong Lien, Nguyen, Long, Le Duc, Nhiem, Nguyen Xuan, Thang, Tran Dinh, Quang, Le Dang, Hoang, Vu Dinh, and Quang, Dang Ngoc
- Abstract
Two new iridoid glycosides, prionitosides A (1) and B (2), along with three known iridoid glycosides, acetylbarlerin (3), 6- O - trans - p -coumaroyl-8- O -acetylshanzhiside methyl ester (4) and 6- O - cis - p -coumaroyl-8- O -acetylshanzhiside methyl ester (5), were isolated from the whole plant of Barleria prionitis Linn. collected in Laos. Their structures were elucidated by spectroscopic analyses including 1D and
2 D NMR, UV, IR, mass spectra and in comparison with the data reported in the literature. In addition, the inhibition of α-glucosidase, cytotoxicity, and anti-inflammatory activities of compounds 1 − 5 were investigated. Compound 3 showed strong inhibition of α-glucosidase activity with an IC 50 value of 38.5 ± 2.12 µg/mL. Compound 2 had weak cytotoxicity against A549 cancer cell line (IC 50 = 109.4 ± 6.0 µg/mL) and inhibition of nitric oxide production in RAW 264.7 cells (IC 50 = 75.64 ± 3.5 µg/mL). [Display omitted] • Two new iridoid glycosides, prionitosides A and B (1 and 2) were isolated from Barleria prionitis Linn. • The structures for two new compounds were elucidated by spectroscopic analyses. • Compound 2 had cytotoxicity against A549 cancer cells and inhibited nitric oxide production in RAW 264.7 cells. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
39. Syzygium polyanthum (Wight) Walp. leaf extract as a sustainable corrosion inhibitor for carbon steel in hydrochloric acidic environment.
- Author
-
Nguyen, Khang Duy Huu, Manh, Tran Dinh, Nguyen, Lien Thi Phuong, Vu, Dao Thanh, and Duong Ngo, Kim Long
- Subjects
ADSORPTION (Chemistry) ,POLAR molecules ,CARBON steel ,PHYSISORPTION ,CORROSION resistance ,CORROSION & anti-corrosives ,CARBON steel corrosion ,TANNINS - Abstract
[Display omitted] • Syzyum polyanthum (Wight) Walp. leaf water-extract (SPWE) possibly protected carbon steel corrosion in aggressively acidic environment. • SPWE accumulates more polar molecules which identify throughout the qualitative, quantitative, GC–MS, and FT-IR analyses. • SPWE acted as a mix-type of inhibitor for carbon steel corrosion in 1.0 M HCl solution with 94.65 ± 0.94 % % inhibition efficiency. • The enhanced corrosion resistance is due to the self-forming film as a result of SPWE species absorption by the active functional groups in SPWE. This study focuses on an investigation of the corrosion inhibition behavior of Syzygium polyanthum (Wight) Walp. leaf extract (SPWE) of carbon steel in 1.0 M hydrochloric acid medium. Electrochemical methods demonstrated a corrosion inhibition efficiency of 94.65 ± 0.94 % when 2000 ppm extract is added to the corrosive solution. Furthermore, surface analysis results indicated that with the absence of an inhibitor, the steel surface suffered severe corrosion, while the corrosion density was slow, and a film was observed on the surface after applying the SPWE into a corrosive environment. The film formed by the chemical and physical adsorption of compounds such as polyphenol, flavonoid, alkaloid, and tannin onto the carbon steel surface has been qualitatively and quantitatively analyzed in this study. Notably, increased immersion time and reaction temperature led to significant desorption of molecules, reflecting characteristic of physical adsorption. However, the corrosion inhibition efficiency of SPWE remained effective, particularly within the temperature range of 25–35 °C. Therefore, this study provides an efficient inhibitor for carbon steel corrosion in 1.0 M hydrochloric acidic environment that could be possibly added to the corrosion inhibitor system. [ABSTRACT FROM AUTHOR]
- Published
- 2025
- Full Text
- View/download PDF
40. Local Structure of Zn Dopant in β-Phase Ga2O3
- Author
-
Yoshioka, Satoru, Yasuda, Kazuhiro, Hsiao, Ching-Lien, Hsu, Chih-Wei, Olovsson, Weine, Birch, Jens, Hemmingsson, Carl, and Pozina, Galia
- Abstract
Ga2O3is a promising ultrawide-bandgap semiconductor for high-voltage and high-power applications, yet achieving reliable p-type electrical conductivity remains a significant challenge. We utilized halide vapor phase epitaxy growth to synthesize epitaxial layers of β-phase Ga2O3doped with Zn, which can serve as a suitable acceptor. Thin-film samples with Zn doping concentrations of 1.7 × 1019and 2.5 × 1020ions/cm3were confirmed as single phases of monoclinic β-Ga2O3by X-ray diffraction. To determine the location of Zn ions within the β-Ga2O3lattice, we employed X-ray absorption near-edge structure (XANES) in conjunction with first-principles density functional theory calculations. Theoretical XANES spectra for Zn substitutions in the tetrahedral and octahedral Ga sites in β-Ga2O3, as well as a precipitation of ZnGa2O4spinel, were compared with the experimental data. The experimental XANES spectra of the Zn L3edge were reproduced well by theoretical spectra of Zn ions occupied at cationic positions at the tetrahedral coordinated site.
- Published
- 2024
- Full Text
- View/download PDF
41. ADMINISTERING INTRAVITREAL BEVACIZUMAB FOR RETINOPATHY OF PREMATURITY
- Author
-
Wu, Pei-Liang, Shih, Chia-Pang, Huang, Yu-Shu, Chen, Hung-Chi, Hsueh, Yi-Jen, Lee, Chia-Wen, Chiang, Ming-Chou, Lien, Reyin, Lee, Chien-Chung, Chu, Shih-Ming, Chou, Hung-Da, Liu, Laura, Chen, Kuan-Jen, Hwang, Yih-Shiou, Lai, Chi-Chun, and Wu, Wei-Chi
- Abstract
Supplemental Digital Content is Available in the Text.Among patients with ROP who had similar GA, patients who received IVB showed similar neurodevelopmental outcomes in comparison with patients who received laser photocoagulation when followed until the mean age of 8 years.
- Published
- 2024
- Full Text
- View/download PDF
42. Single‐crystal X‐ray analysis of the diketo form of asymmetric curcuminoids and coupled with NMRinsights into its β‐Keto‐enol tautomerization at ambient temperature
- Author
-
Cheng, Yang‐Je, Lin, Jyun‐Yi, Shih, Tzenge‐Lien, and Hsieh, Chung‐Hung
- Abstract
In this study, we present a detailed analysis of the structural forms of asymmetric curcuminoids through single‐crystal X‐ray diffraction and nuclear magnetic resonance (NMR) spectroscopy. Curcuminoids substituted with electron‐withdrawing groups (Cl and Br) predominantly adopt the β‐keto‐enol form, whereas those with an OMe group exhibit both diketo and β‐keto‐enol forms. Variable‐temperature X‐ray diffraction studies confirm that the structural state of curcuminoids is influenced by temperature. Our findings also reveal that the β‐keto‐enol form is favored in acidic and neutral conditions, while the diketo form is more prevalent in basic environments. The theoretical Density Functional Theory (DFT) calculations further elucidate the energy differences between the diketo and β‐keto‐enol forms, emphasizing the significance of electronic effects and temperature on tautomeric distributions. These insights enhance our understanding of the structural dynamics of curcuminoids, with implications for their biological activity and pharmacological applications. This research provides the inaugural evidence elucidating the stereochemistry of asymmetric curcuminoids in both liquid and solid states, exploring the interdependent roles of electronic and temperature effects.
- Published
- 2024
- Full Text
- View/download PDF
43. Barrier-Function Adaptive Finite-Time Trajectory Tracking Controls for Cyber Resilience in Smart Grids Under an Electricity Market Environment
- Author
-
Hossein Rouhani, Seyed, Su, Chun-Lien, Mobayen, Saleh, Esmaeili Shayan, Mostafa, Khooban, Mohammad-Hassan, and Elsisi, Mahmoud
- Abstract
The advancement and proliferation of digitalization and communication infrastructure have facilitated the rise of real-time bidding markets in smart grids. In these dynamic markets, energy distribution companies and power-generating companies interact to establish energy exchange contracts based on offered prices. However, the fluctuation in power flow resulting from contract changes within the real-time bidding market introduces a potential vulnerability that malicious attackers can exploit to launch successful stealthy attacks. To enhance the smart grid resiliency against cyber-attack in the power market bidding environment, a new barrier-function adaptive finite-time trajectory tracking control is proposed in this paper. The developed controller is utilized to actively counteract and mitigate potential cyber-attacks to ensure their rejection and prevention. The stability analysis convincingly demonstrates the rapid convergence of system states within a finite time frame, empowering the system to effectively reject cyber-attacks in real-time. Test results of an IEEE test systems, considering governor dead bound nonlinearity and communication time delay are presented and compared with those obtained from other methods to ensure and demonstrate the performance of proposed method. The Speedgoat real-time target machine, along with Simulink real-time, validates the effectiveness of the proposed method.
- Published
- 2024
- Full Text
- View/download PDF
44. The Lancet PsychiatryCommission on mental health in Ukraine
- Author
-
Pinchuk, Irina, Leventhal, Bennett L, Ladyk-Bryzghalova, Alisa, Lien, Lars, Yachnik, Yuliia, Casanova Dias, Marisa, Virchenko, Volodymyr, Szatmari, Peter, Protsenko, Olena, Chaimowitz, Gary Andrew, Chisholm, Dan, Kolokolova, Viktoriia, Guerrero, Anthony P S, Chumak, Stanislav, Myshakivska, Olha, Robertson, Paul Gerard, Hanson, Mark D, Yee Liu, Howard, De Picker, Livia Joanna, Kupchik, Marina, Pinto da Costa, Mariana, Scott, James G, Wainberg, Milton Leonard, Shevaga, Lidiya, Brendel, Rebecca Weintraub, van Voren, Robert, Feldman, Inna, Mihalopoulos, Cathy, Kaminska, Svitlana, and Skokauskas, Norbert
- Published
- 2024
- Full Text
- View/download PDF
45. Pharmacokinetic and Pharmacodynamic Interaction of Finerenone with Diltiazem, Fluconazole, and Ritonavir in Rats
- Author
-
Bui, Tham Thi, Kim, So-Hyeon, Jung, Woojin, Yang, Sung-yoon, Tran, Quyen Thi, Lee, Hyunjung, Park, Seongwon, Ngo, Lien Thi, Yun, Hwi-yeol, and CHAE, Jung-woo
- Abstract
Background and Objectives: Finerenone, a novel selective non-steroidal mineralocorticoid receptor antagonist, has been indicated in chronic kidney disease associated with type 2 diabetes mellitus. Considering the potential complications of diabetes, finerenone can be co-administered with various drugs, including fluconazole, diltiazem, and ritonavir. Given that finerenone is a substrate of cytochrome P450 (CYP) 3A4, the concurrent administration of finerenone with CYP3A4 inhibitors (diltiazem or fluconazole or ritonavir) could potentially lead to drug interactions, which may cause adverse events such as hyperkalemia. No studies have investigated interactions between finerenone and diltiazem or fluconazole or ritonavir. Therefore, this study aims to investigate the pharmacokinetic interaction of finerenone with diltiazem or fluconazole or ritonavir and to evaluate the impact of fluconazole on the pharmacodynamics of finerenone. Methods: The pharmacokinetic study included four rat groups (n= 8 rats/group), including a control group (finerenone alone) and test groups (finerenone pretreated with diltiazem or fluconazole or ritonavir) using both non-compartment analysis (NCA) and population pharmacokinetic (pop-PK) modeling. The pop-PK model was developed using non-linear mixed-effects modeling in NONMEM
® (version 7.5.0). In the pharmacodynamic study, serum potassium (K+ ) levels were measured to assess the effects of fluconazole on finerenone-induced hyperkalemia. Results: The NCA results indicated that the area under the plasma concentration-time curve (AUC) of finerenone increased by 1.86- and 1.95-fold when coadministered with fluconazole and ritonavir, respectively. In contrast, diltiazem did not affect the pharmacokinetics of finerenone. The pharmacokinetic profiles of finerenone were best described by a one-compartment disposition with first-order elimination and dual first-order absorption kinetics. The pop-PK modeling results demonstrated that the apparent clearance of finerenone decreased by 50.3% and 49.2% owing to the effects of fluconazole and ritonavir, respectively. Additionally, the slow absorption rate, which represents the absorption in the distal intestinal tract of finerenone, increased by 55.7% due to the effect of ritonavir. Simultaneously, a pharmacodynamic study revealed that finerenone in the presence of fluconazole caused a significant increase in K+ levels compared with finerenone alone. Conclusions: Coadministration of finerenone with fluconazole or ritonavir increased finerenone exposure in rats. Additionally, the administration of finerenone in the presence of fluconazole resulted in elevated K+ levels in rats. Further clinical studies are required to validate these findings.- Published
- 2024
- Full Text
- View/download PDF
46. Square-Planar Nickel Bis(phosphinopyridyl) Complexes for Long-Lived Photocatalytic Hydrogen Evolution
- Author
-
Wu, Chien-Ting, Pan, Hung-Ruei, Hsieh, Chi-Tien, Tsai, Yu-Syuan, Liao, Pei-Juan, Chiang, Shuo-Huan, Chu, Che-Min, Shao, Wei-Kai, Lien, Yi-Rong, Chen, Yu-Wei, Kan, Tsung-Lun, Wang, Vincent C.-C., Cheng, Mu-Jeng, and Hsu, Hua-Fen
- Abstract
Phosphinopyridyl ligands are used to synthesize a class of Ni(II) bis(chelate) complexes, which have been comprehensively characterized in both solid and solution phases. The structures display a square–planar configuration within the primary coordination sphere, with axially positioned labile binding sites. Their electrochemical data reveal two redox couples during the reduction process, suggesting the possibility of accessing two–electron reduction states. Significantly, these complexes serve as robust catalysts for homogeneous photocatalytic H2evolution. In a system utilizing an organic photosensitizer and a sacrificial electron donor, an optimal turnover number of 27,100 is achieved in an alcohol–containing aqueous solution. A series of photophysical and electrochemical measurements were conducted to elucidate the reaction mechanism of photocatalytic hydrogen generation. Density function theory calculations propose a catalytic pathway involving two successive one–electron reduction steps, followed by two proton discharges. The sustained photocatalytic activity of these complexes stems from their distinct ligand system, which includes phosphine and pyridine donors that aid in stabilizing the low oxidation states of the Ni center.
- Published
- 2024
- Full Text
- View/download PDF
47. Layer-by-layer assembly of boron arsenide and copper nanoflake-based aramid nanofibers for thermoconductive electromagnetic interference shielding materials with superior mechanical flexibility and flame retardancy.
- Author
-
Cuong Nguyen, Van, Nguyen Pham, Vi, Thien Nguyen, Chi, Hoang Ai Pham, Le, Khiem Nguyen, Duy, Thi Kieu Lien, Mai, and Canh Vu, Minh
- Subjects
FIREPROOFING ,FLEXIBLE electronics ,THERMAL conductivity ,ELECTROMAGNETIC interference ,ELECTROMAGNETIC shielding - Abstract
[Display omitted] Flexible and wearable electronics represent an emerging frontier, but realizing their potential requires addressing challenges like electromagnetic interference (EMI) shielding, electrical insulating thermal management, and mechanical flexibility. Layer-by-layer structure with alternating conductive and insulating layers offers a promising solution. In this work, we fabricated layer-by-layer structured papers combining boron arsenide (BA) as insulating layers and two-dimensional copper nanoflake (CuF) as conductive layers based on aramid nanofiber (ANF) film via alternating vacuum filtration. The resultant paper (BA4/CuF3) consists of 3 layers of CuF (50 wt%) based ANF (CuF@ANF) conductive layers sandwiched between 4 layers of BA (50 wt%) based ANF (BA/ANF) insulating layers providing exceptional EMI shielding effectiveness (SE) up to 52 dB in the X-band frequency, and in-plane thermal conductivity up to 32.8 W/mK. Meanwhile, the composite papers also demonstrate excellent mechanical flexibility, with the BA4/CuF3 papers exhibiting a tensile strength of 92.38 MPa and EMI SE above 50 dB. Moreover, the composites impart thermal stability up to 500 °C and reduce flammability. The concurrent enhancement of EMI shielding, thermal conductivity, and mechanical properties confirms the potential of layer-by-layer BA/CuF papers for next-generation flexible electronics demanding electromagnetic protection and thermal management. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
48. Can cooperation reduce yield risks associated with infectious diseases in shrimp aquaculture in Vietnam?
- Author
-
Lien, Ho Hong, de Mey, Yann, Nhan, Dang Kieu, Bush, Simon, and Meuwissen, Miranda P.M.
- Abstract
AbstractInfectious diseases are a major threat to Asian shrimp aquaculture, as they proliferate at system level rather than only the individual level. We assess the impact of various forms of cooperation among Vietnamese farmers on yield risks caused by white spot disease and acute hepatopancreatic necrosis disease. Using a stochastic simulation model, we simulate shrimp farming yield risks based on input from two expert workshops. The results provide a relative comparison of expected yield losses caused by both diseases comparing a baseline scenario (no cooperation) and three scenarios with varying degrees of synchronization and information sharing across farms. Results show lower expected yield losses in all three cooperation scenarios in comparison with the farm-based scenario, highlighting the value of synchronization and information sharing practices to mitigate yield losses. We discuss the potential this has to reduce systemic risks in aquaculture, thereby potentially incentivizing the reintroduction of risk-sharing mechanisms.
- Published
- 2024
- Full Text
- View/download PDF
49. Crowdsourced Bicycle Monitoring and Finding With Riding User Recognition Based on Internet of Things Technologies
- Author
-
Chen, Lien-Wu, Cho, Chun-Yu, Li, Ai-Ni, and Tsai, Ming-Fong
- Abstract
In this article, we propose a crowdsourced bicycle monitoring and finding (CBMF) framework with riding user recognition for rider safety and bike security based on Internet of Things (IoT) technologies. According to our review of relevant research, CBMF is the first framework that provides the following features: 1) it can use the inertial data to determine the normal/dangerous state of the bicycle; 2) it can recognize whether the rider is the owner based on the inertial data of cycling; and 3) if the bicycle equipped with the IoT device is stolen/missing, the current locations of the stolen bicycle can be reported by surrounding smartphones that receive the iBeacon signals with an abnormal bit proactively broadcasted by the equipped IoT device. In particular, the densely connected convolutional network is explored in CBMF to extract diverse features of riding for improving rider recognition accuracy. An Android-based prototype with the Jetson Nano developing board is implemented to verify the feasibility and superiority of our framework. Experimental results show that our developed deep learning model outperforms the existing methods and can accurately recognize the riding user (with over 90% accuracy). Moreover, the crowdsourced sensing approach can precisely locate the position of the bicycle (reducing about 50% of positioning errors), which increases the possibility of getting back the stolen/missing bicycle.
- Published
- 2024
- Full Text
- View/download PDF
50. Centimeter-Level Indoor Positioning With Facing Direction Detection for Microlocation-Aware Services
- Author
-
Chen, Lien-Wu and Chen, Chi-Ren
- Abstract
This study proposes a centimeter-level indoor positioning (CLIP) framework to achieve highly accurate localization with facing direction detection for the microlocation-aware Internet of Things (IoT). The CLIP framework can provide accurate centimeter-level positioning information to people indoors by integrating installed surveillance cameras with the IoT, where the efficient operation of microlocation-aware IoT applications and services can be enabled for smart spaces. CLIP can be used to accurately determine the position and facing direction of an individual. According to our review of relevant research, CLIP is the first indoor positioning framework that includes the following features: 1) centimeter-level positioning accuracy for the microlocation-aware IoT that can detect the facing direction of individuals; 2) employment of existing surveillance cameras with low-additional installation cost; and 3) innovative infrastructure for microlocation-aware IoT applications that can enable accurate centimeter-level path planning for individuals, emergency evacuation for groups of people, and geofencing with microlocation awareness. An Android-based system was implemented to verify the feasibility and effectiveness of the CLIP framework, and experimental results indicate that CLIP outperforms existing indoor positioning methods and can achieve centimeter-level accuracy with the improvement ratio of 94.6% over Sextant.
- Published
- 2024
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.