28 results on '"Shan Teng"'
Search Results
2. Comparison of the effect of two-way evaluation model on the whole process management of PICC catheterization in patients with lung cancer
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Peng Chen, Shan Teng, Mei-gui Chen, and Ting-ting Yao
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Surgery ,RD1-811 - Published
- 2023
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3. Assessing joint toxic effects of arsenate and perfluorooctane sulfonate on earthworm by combining integrated biomarker response and mixture toxicity indices
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Zhifeng Wang, Yanfeng Shi, Zhibin Zhang, Fangjie Qi, Weina Xue, Donghui Tian, and Shan Teng
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Eisenia fetida ,PFOS ,Arsenic ,Bioaccumulation ,Integrated Biomarker Response (IBR) ,Joint toxicity ,Ecology ,QH540-549.5 - Abstract
Arsenic and perfluorooctane sulfonate (PFOS) are widely distributed pollutants in the soil environment and could coexist as mixture, but little studies have been reported about their combined toxicity to terrestrial invertebrates. In the present work, we exposed earthworm Eisenia fetida to sub-lethal levels of arsenate (As(V)), PFOS, and their mixture for 30 days. Multiple biomarker responses and bioaccumulation of the two toxicants in the organisms were analyzed to assess the joint toxicity of As(V) and PFOS. Bioaccumulation analysis results demonstrated that the coexistence of As(V) and PFOS in soil could increase the bioavailability of As(V) while decreasing the bioavailability of PFOS. As the level of exposure increased, significant variations were observed in all of the biomarkers analyzed, indicating growth inhibition and oxidative damage. The multiple biomarker responses were summarized by using the Integrated Biomarker Response (IBR) index, and significant dose–response relationships were found in treatments of As(V), PFOS and As(V)/PFOS mixture. Then the toxic interaction between As(V) and PFOS was assessed by combining IBR and two mixture toxicity indices, Effect Addition Index (EAI) and Concentration Addition Index (CAI). Results showed that the joint toxicity of As(V) and PFOS depended on the exposure concentration of As(V). The combined pollution of PFOS with lower concentration of As(V) led to synergistic interaction at the whole range of effect levels, while that with higher concentration of As(V) resulted in the toxicity interaction changing from antagonism to synergism as the effect level increased. As(V) was the main toxicant that caused adverse effects on earthworm biomarkers and affected the joint toxicity of As(V)/PFOS mixture. This study, for the first time, provides valuable toxicological data for the risk evaluation of combined toxicity of As(V) and PFOS in the soil environment. Moreover, this work indicates that the integration of IBR index and EAI/CAI could be an effective and practical method for the characterization of toxicity interaction within binary mixture systems.
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- 2022
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4. Drug repositioning based on network-specific core genes identifies potential drugs for the treatment of autism spectrum disorder in children
- Author
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Huan Gao, Yuan Ni, Xueying Mo, Dantong Li, Shan Teng, Qingsheng Huang, Shuai Huang, Guangjian Liu, Sheng Zhang, Yaping Tang, Long Lu, and Huiying Liang
- Subjects
Autism spectrum disorder ,Coexpression network ,Drug repositioning ,Knowledge graph ,Natural language processing ,Biotechnology ,TP248.13-248.65 - Abstract
Identification of exact causative genes is important for in silico drug repositioning based on drug-gene-disease relationships. However, the complex polygenic etiology of the autism spectrum disorder (ASD) is a challenge in the identification of etiological genes. The network-based core gene identification method can effectively use the interactions between genes and accurately identify the pathogenic genes of ASD. We developed a novel network-based drug repositioning framework that contains three steps: network-specific core gene (NCG) identification, potential therapeutic drug repositioning, and candidate drug validation. First, through the analysis of transcriptome data for 178 brain tissues, gene network analysis identified 365 NCGs in 18 coexpression modules that were significantly correlated with ASD. Second, we evaluated two proposed drug repositioning methods. In one novel approach (dtGSEA), we used the NCGs to probe drug-gene interaction data and identified 35 candidate drugs. In another approach, we compared NCG expression patterns with drug-induced transcriptome data from the Connectivity Map database and found 46 candidate drugs. Third, we validated the candidate drugs using an in-house mental diseases and compounds knowledge graph (MCKG) that contained 7509 compounds, 505 mental diseases, and 123,890 edges. We found a total of 42 candidate drugs that were associated with mental illness, among which 10 drugs (baclofen, sulpiride, estradiol, entinostat, everolimus, fluvoxamine, curcumin, calcitriol, metronidazole, and zinc) were postulated to be associated with ASD. This study proposes a powerful network-based drug repositioning framework and also provides candidate drugs as well as potential drug targets for the subsequent development of ASD therapeutic drugs.
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- 2021
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5. Mindfulness and Suicide Risk in Undergraduates: Exploring the Mediating Effect of Alexithymia
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Yuan Fang, Baoer Zeng, Peiyi Chen, Yiling Mai, Shan Teng, Minting Zhang, Jingbo Zhao, Xueling Yang, and Jiubo Zhao
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suicide ,suicide risk ,mindfulness ,alexithymia ,gender differences ,undergraduates ,Psychology ,BF1-990 - Abstract
The present study was designed to examine the relationship between dispositional mindfulness and suicide risk in undergraduates, and it further explored the potential mediating role of alexithymia in this relationship. A total of 2,633 undergraduates completed the Mindful Attention Awareness Scale (MAAS), the Suicidal Behaviors Questionnaire – Revised (SBQ-R), and the 20-item Toronto Alexithymia Scale (TAS-20). The results indicate that mindfulness and suicide risk were negatively correlated, and alexithymia partially mediated the relationship between mindfulness and suicide risk only in the female undergraduates. Moreover, only the difficulty in identifying feelings (DIF) factor of alexithymia mediated the relationship between mindfulness and suicide risk in the female undergraduates. These findings contribute to the potential mechanism that explains the relationship between mindfulness and suicide risk. Furthermore, it is possible to implement mindfulness in the suicide intervention of alexithymic individuals.
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- 2019
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6. Machine learning assisted study of phase and properties in cobalt-free AlCrxCuFeNi2 high-entropy alloys
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Gao, Jian, Shan, Teng, Qin, Xu, Wang, Kefan, Yin, Yichuan, Huang, Ming, and Yang, Sen
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- 2024
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7. Molecular Mechanisms of Cutaneous Immune-Related Adverse Events (irAEs) Induced by Immune Checkpoint Inhibitors
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Yi-Shan Teng and Sebastian Yu
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immune checkpoint inhibitor ,immune-related adverse event ,cutaneous immune-related adverse event ,anti-CTLA-4 inhibitor ,anti-PD-1 inhibitor ,anti-PD-L1 inhibitor ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Over the past few decades, immune checkpoint inhibitors (ICIs) have emerged as promising therapeutic options for the treatment of various cancers. These novel treatments effectively target key mediators of immune checkpoint pathways. Currently, ICIs primarily consist of monoclonal antibodies that specifically block cytotoxic T-lymphocyte antigen 4 (CTLA-4), programmed cell death 1 (PD-1), programmed cell death-ligand 1 (PD-L1), and lymphocyte activation gene 3 protein (LAG-3). Despite the notable efficacy of ICIs in cancer treatment, they can also trigger immune-related adverse events (irAEs), which present as autoimmune-like or inflammatory conditions. IrAEs have the potential to affect multiple organ systems, with cutaneous toxicities being the most commonly observed. Although cutaneous irAEs are typically of low-grade severity and can usually be managed effectively, there are cases where severe irAEs can become life-threatening. Therefore, early recognition and a comprehensive understanding of the mechanisms underlying cutaneous irAEs are crucial for improving clinical outcomes in cancer patients. However, the precise pathogenesis of cutaneous irAEs remains unclear. This review focuses on the skin manifestations induced by ICIs, the prognosis related to cutaneous irAEs, and the exploration of potential mechanisms involved in cutaneous irAEs.
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- 2023
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8. A Neuroprotective Action of Quercetin and Apigenin through Inhibiting Aggregation of Aβ and Activation of TRKB Signaling in a Cellular Experiment
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Ya-Jen Chiu, Yu-Shan Teng, Chiung-Mei Chen, Ying-Chieh Sun, Hsiu Mei Hsieh-Li, Kuo-Hsuan Chang, and Guey-Jen Lee-Chen
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Pharmacology ,Drug Discovery ,Molecular Medicine ,Biochemistry - Published
- 2023
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9. Organizational Culture: The Key to Improving Service Management in Industry 4.0
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Shuo-Fang Liu, Yao-Jen Fan, Ding-Bang Luh, and Pei-Shan Teng
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leadership ,organizational culture ,organizational commitment ,service management ,Industry 4.0 ,incentives ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Biology (General) ,QH301-705.5 ,Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
Industry 4.0 can enhance the operational efficiency of the supply chain, but the current research mainly focuses on analytics and smart things. Many companies integrate their organizations more closely with data by adopting Industry 4.0, but this study found that some companies have changed their leadership, organizational, and customer relationships through the adoption of CPS. Industry 4.0 is a socio-technical system that should be explored in terms of management practices, employee feedback, and the cause-and-effect relationship between them. This study proposes a modeling framework using the Su-field analysis of TRIZ method (Theory of Inventive Problem Solving) and applies the Partial Least Squares Structural Equation Modeling (PLS-SEM) method to investigate the relationship between leadership, organizational culture, and service management in the Taiwan industry. The results show that the data analysis, CPS, IoT, and intelligent technologies of Industry 4.0 can facilitate connections within the value chain and increase agility in response to environmental changes. Companies must have a good organizational culture and provide the right incentives to gain the organizational commitment of their employees to implement Industry 4.0.
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- 2022
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10. Neutrophils and Immunity: From Bactericidal Action to Being Conquered
- Author
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Tie-Shan Teng, Ai-ling Ji, Xin-Ying Ji, and Yan-Zhang Li
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Immunologic diseases. Allergy ,RC581-607 - Abstract
The neutrophil is the major phagocyte and the final effector cell of the innate immunity, with a primary role in the clearance of extracellular pathogens. Using the broad array of cytokines, extracellular traps, and effector molecules as the humoral arm, neutrophils play a crucial role in the host defense against pathogen infections. On the other hand, the pathogen has the capacity to overcome neutrophil-mediated host defense to establish infection causing human disease. Pathogens, such as S. aureus, have the potential to thwart neutrophil chemotaxis and phagocytosis and thereby succeed in evading killing by neutrophils. Furthermore, S. aureus surviving within neutrophils promotes neutrophil cytolysis, resulting in the release of host-derived molecules that promote local inflammation. Here, we provide a detailed overview of the mechanisms by which neutrophils kill the extracellular pathogens and how pathogens evade neutrophils degradation. This review will provide insights that might be useful for the development of novel therapies against infections caused by antibiotic resistant pathogens.
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- 2017
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11. Corporate Sustainability: Impact Factors on Organizational Innovation in the Industrial Area
- Author
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Ding Bang Luh, Shuo Fang Liu, Yao Jen Fan, and Pei Shan Teng
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leadership style ,media_common.quotation_subject ,Geography, Planning and Development ,TJ807-830 ,Organizational culture ,Management, Monitoring, Policy and Law ,TD194-195 ,Renewable energy sources ,Promotion (rank) ,Knowledge integration ,0502 economics and business ,Leadership style ,GE1-350 ,Human resources ,Industrial organization ,media_common ,formative factors ,Environmental effects of industries and plants ,organizational culture ,Renewable Energy, Sustainability and the Environment ,business.industry ,Corporate governance ,05 social sciences ,customer orientation ,Building and Construction ,corporate sustainability ,knowledge absorptivity ,knowledge integration capability ,Environmental sciences ,Corporate sustainability ,Sustainability ,organizational innovation ,050211 marketing ,business ,050203 business & management - Abstract
In recent years, the principle of sustainability has received increasing attention in corporate governance, and corporate sustainability is usually achieved through organizational innovation. The purpose of this study is to identify the factors that are critical for companies to influence organizational innovation when promoting Industry 4.0. Our research analyzes the relationship between these factors and Industry 4.0, human resources, and corporate sustainability to investigate organizational innovation and its formative factors against the backdrop of the new industrial era. Integrating partial least squares-structured equation modeling (PLS-SEM), bootstrapping, and other methods, we discover that for companies focusing on promoting Industry 4.0, the most important organizational innovation that affects sustainability is influenced by customer orientation, organizational culture, and leadership style in descending order of influence. Meanwhile, knowledge integration capability (KIC) is more important than knowledge absorptivity. It indicates that in the promotion of Industry 4.0, the trend of sustainability led by the leaders is fading, and the customer-driven trend will become more and more obvious in the future.
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- 2021
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12. Drug repositioning based on network-specific core genes identifies potential drugs for the treatment of autism spectrum disorder in children
- Author
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Yuan Ni, Long Lu, Huiying Liang, Yaping Tang, Xueying Mo, Sheng Zhang, Shan Teng, Huan Gao, Shuai Huang, Guangjian Liu, Qingsheng Huang, and Dantong Li
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Drug ,media_common.quotation_subject ,In silico ,Biophysics ,Gene regulatory network ,Fluvoxamine ,Computational biology ,Biochemistry ,Transcriptome ,chemistry.chemical_compound ,Structural Biology ,Genetics ,medicine ,Autism spectrum disorder ,media_common ,ComputingMethodologies_COMPUTERGRAPHICS ,Knowledge graph ,Entinostat ,business.industry ,Natural language processing ,Drug repositioning ,medicine.disease ,Computer Science Applications ,Coexpression network ,chemistry ,business ,TP248.13-248.65 ,medicine.drug ,Biotechnology ,Research Article - Abstract
Graphical abstract, Identification of exact causative genes is important for in silico drug repositioning based on drug-gene-disease relationships. However, the complex polygenic etiology of the autism spectrum disorder (ASD) is a challenge in the identification of etiological genes. The network-based core gene identification method can effectively use the interactions between genes and accurately identify the pathogenic genes of ASD. We developed a novel network-based drug repositioning framework that contains three steps: network-specific core gene (NCG) identification, potential therapeutic drug repositioning, and candidate drug validation. First, through the analysis of transcriptome data for 178 brain tissues, gene network analysis identified 365 NCGs in 18 coexpression modules that were significantly correlated with ASD. Second, we evaluated two proposed drug repositioning methods. In one novel approach (dtGSEA), we used the NCGs to probe drug-gene interaction data and identified 35 candidate drugs. In another approach, we compared NCG expression patterns with drug-induced transcriptome data from the Connectivity Map database and found 46 candidate drugs. Third, we validated the candidate drugs using an in-house mental diseases and compounds knowledge graph (MCKG) that contained 7509 compounds, 505 mental diseases, and 123,890 edges. We found a total of 42 candidate drugs that were associated with mental illness, among which 10 drugs (baclofen, sulpiride, estradiol, entinostat, everolimus, fluvoxamine, curcumin, calcitriol, metronidazole, and zinc) were postulated to be associated with ASD. This study proposes a powerful network-based drug repositioning framework and also provides candidate drugs as well as potential drug targets for the subsequent development of ASD therapeutic drugs.
- Published
- 2021
13. Novel Synthetic Coumarin-Chalcone Derivative (E)-3-(3-(4-(Dimethylamino)Phenyl)Acryloyl)-4-Hydroxy-2H-Chromen-2-One Activates CREB-Mediated Neuroprotection in Aβ and Tau Cell Models of Alzheimer’s Disease
- Author
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Chiu Ya-Jen, Ming Tsan Su, Te-Hsien Lin, Wenwei Lin, Chiung-Mei Chen, Guey Jen Lee-Chen, Ying Chieh Sun, Chung-Yin Lin, Yu-Shan Teng, Hsiu Mei Hsieh-Li, Chih-Hsin Lin, and Kuo-Hsuan Chang
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Male ,MAPK/ERK pathway ,Aging ,Article Subject ,tau Proteins ,CREB ,Biochemistry ,Neuroprotection ,Mice ,Neuroblastoma ,Chalcones ,Alzheimer Disease ,Coumarins ,Ca2+/calmodulin-dependent protein kinase ,medicine ,Animals ,Humans ,Cyclic AMP Response Element-Binding Protein ,Protein kinase A ,Mice, Inbred ICR ,Amyloid beta-Peptides ,biology ,QH573-671 ,Kinase ,Chemistry ,Neurodegeneration ,Cell Biology ,General Medicine ,medicine.disease ,Cell biology ,Neuroprotective Agents ,biology.protein ,Signal transduction ,Cytology ,Research Article - Abstract
Abnormal accumulations of misfolded Aβ and tau proteins are major components of the hallmark plaques and neurofibrillary tangles in the brains of Alzheimer’s disease (AD) patients. These abnormal protein deposits cause neurodegeneration through a number of proposed mechanisms, including downregulation of the cAMP-response-element (CRE) binding protein 1 (CREB) signaling pathway. Using CRE-GFP reporter cells, we investigated the effects of three coumarin-chalcone derivatives synthesized in our lab on CREB-mediated gene expression. Aβ-GFP- and ΔK280 tauRD-DsRed-expressing SH-SY5Y cells were used to evaluate these agents for possible antiaggregative, antioxidative, and neuroprotective effects. Blood-brain barrier (BBB) penetration was assessed by pharmacokinetic studies in mice. Of the three tested compounds, (E)-3-(3-(4-(dimethylamino)phenyl)acryloyl)-4-hydroxy-2H-chromen-2-one (LM-021) was observed to increase CREB-mediated gene expression through protein kinase A (PKA), Ca2+/calmodulin-dependent protein kinase II (CaMKII), and extracellular signal-regulated kinase (ERK) in CRE-GFP reporter cells. LM-021 exhibited antiaggregative, antioxidative, and neuroprotective effects mediated by the upregulation of CREB phosphorylation and its downstream brain-derived neurotrophic factor and BCL2 apoptosis regulator genes in Aβ-GFP- and ΔK280 tauRD-DsRed-expressing SH-SY5Y cells. Blockage of the PKA, CaMKII, or ERK pathway counteracted the beneficial effects of LM-021. LM-021 also exhibited good BBB penetration ability, with brain to plasma ratio of 5.3%, in in vivo pharmacokinetic assessment. Our results indicate that LM-021 works as a CREB enhancer to reduce Aβ and tau aggregation and provide neuroprotection. These findings suggest the therapeutic potential of LM-021 in treating AD.
- Published
- 2021
14. Surface integrity control of laser cleaning of an aluminum alloy surface paint layer
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Shan, Teng, primary, Yin, Fengshi, additional, Wang, Sijie, additional, Qiao, Yulin, additional, and Liu, Pengfei, additional
- Published
- 2020
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15. Three-dimensional homochiral coordination polymers of Eu(III) and Tb(III): Synthesis, structure determination, and optical properties
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Rui-Ying Wang, Ben-Lai Wu, Wenbo Wang, Hong-Zhi Sun, Bao-Shan Teng, Yuan-Jun Ma, and Ai-Ping Huang
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Materials science ,Photoluminescence ,chemistry.chemical_element ,Terbium ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,Inorganic Chemistry ,Isophthalic acid ,chemistry.chemical_compound ,Materials Chemistry ,Physical and Theoretical Chemistry ,Isostructural ,chemistry.chemical_classification ,Chiral ligand ,Polymer ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,0104 chemical sciences ,Electronic, Optical and Magnetic Materials ,Crystallography ,chemistry ,Ceramics and Composites ,Homochirality ,0210 nano-technology ,Europium - Abstract
Self-assembly of the corresponding europium and terbium salts with designed chiral ligand (S)-5-((2-carboxy-5-oxopyrrolidin-1-yl)methyl)isophthalic acid (H3L) generated two novel 3D coordination polymers {[Eu(L)]·0.5CH3CN}n (1) and {[Tb(L)]·0.5CH3CN}n (2). Single-crystal X-ray diffraction analyses reveal that 1 and 2 are isostructural metal-organic frameworks built from four-stranded helixes. Complexes 1 and 2 are intriguing homochiral porous architectures with 6,6-connected (48∙66∙8)(413∙62) topology, whose homochirality was further confirmed by their solid-state circular dichroism spectra. Thermal analyses disclose that the desolvated frameworks of 1 and 2 can maintain their structural stability below 370 °C. Solid-state photoluminescence studies show that 1 and 2 exhibit strong characteristic Eu(III) and Tb(III) emissions with long lifetimes of 1.31 and 1.35 ms, respectively. In addition, 1 and 2 also exhibit significant second harmonic generation activities with their intensities of about 0.29 and 0.31 times larger than that of potassium dihydrogenphosphate, respectively. Very importantly, the excellent thermostabilities and strong red and green emissions of 1 and 2 are of great significance for further exploration of their applications in optical devices.
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- 2020
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16. The relationship between individual characteristics and ideation behavior: an empirical study of storyboards
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Tai-Kuei Yu, Pei-Shan Teng, and Dengchuan Cai
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Visual perception ,media_common.quotation_subject ,General Engineering ,Educational technology ,Cognition ,Animation ,Creativity ,Education ,Empirical research ,Mathematics education ,Storyboard ,Psychology ,Engineering(all) ,media_common ,Cognitive style - Abstract
The development of digital technology tool and the progress of animation design activities have led to great progress in the animation field. The storyboard is a type of media used to present animator ideas. Therefore, it is commonly viewed as fundamental to the animation industry. This study aims to discuss cognitive style- and gender-based differences in word and image idea associations and how to create a story using word and image stimuli. Using a cognitive style index instrument, 104 university freshmen (48 males and 56 females) were classified into the four type groups of male analytic, male intuitive, female analytic, and female intuitive. Each participant was then asked to execute two design tasks: associate word and image ideas (ideational process) and develop a storyboard (ideational outcome). Four experts evaluated outcomes in terms of creativity, structure, and drawing skill. Results show that larger numbers of words and images correlate with good word and image ideas and that analytic females exhibited the greatest level of ideation and intuitive males exhibited the least.
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- 2014
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17. Neutrophils and Immunity: From Bactericidal Action to Being Conquered
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Xin-Ying Ji, Ai-Ling Ji, Tie-Shan Teng, and Yan-Zhang Li
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0301 basic medicine ,lcsh:Immunologic diseases. Allergy ,alpha-Defensins ,Phagocyte ,Neutrophils ,Phagocytosis ,Immunology ,Inflammation ,Review Article ,Biology ,Extracellular Traps ,Microbiology ,03 medical and health sciences ,Immunity ,Drug Resistance, Multiple, Bacterial ,medicine ,Animals ,Humans ,Immunology and Allergy ,Immune Evasion ,Innate immune system ,030102 biochemistry & molecular biology ,Effector ,Chemotaxis ,Bacterial Infections ,General Medicine ,Immunity, Innate ,Chemotaxis, Leukocyte ,Cytolysis ,030104 developmental biology ,medicine.anatomical_structure ,Receptors, Pattern Recognition ,Host-Pathogen Interactions ,medicine.symptom ,lcsh:RC581-607 - Abstract
The neutrophil is the major phagocyte and the final effector cell of the innate immunity, with a primary role in the clearance of extracellular pathogens. Using the broad array of cytokines, extracellular traps, and effector molecules as the humoral arm, neutrophils play a crucial role in the host defense against pathogen infections. On the other hand, the pathogen has the capacity to overcome neutrophil-mediated host defense to establish infection causing human disease. Pathogens, such asS. aureus, have the potential to thwart neutrophil chemotaxis and phagocytosis and thereby succeed in evading killing by neutrophils. Furthermore,S. aureussurviving within neutrophils promotes neutrophil cytolysis, resulting in the release of host-derived molecules that promote local inflammation. Here, we provide a detailed overview of the mechanisms by which neutrophils kill the extracellular pathogens and how pathogens evade neutrophils degradation. This review will provide insights that might be useful for the development of novel therapies against infections caused by antibiotic resistant pathogens.
- Published
- 2017
18. The Aesthetic Impression Given By Web-Based Learning Systems: The Influence of Cognitive Style
- Author
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Dengchuan Cai and Pei Shan Teng
- Subjects
Communication ,Semantic difference ,Computer Science Applications ,Education ,Impression ,Order (business) ,Web based learning ,Web page ,Media Technology ,Psychology ,Adjective ,Perceptual mapping ,Cognitive psychology ,Cognitive style - Abstract
Drawing on theories of cognitive psychology, I have developed a research model to explain the relationship between the visual factors and the aesthetic impression of a web page according to users’ emotional responses. A series of investigations of a web-based learning system were explored in order to further understand the aesthetic impression created by different cognitive styles. The results indicated that: 1) 15 adjective pairs were classified two major visual factors, order and complexity, through semantic difference method and factor analysis; 2) a perceptual map of web-based learning systems was drawn up according to the two dimensions of complexity vs. simple, and order vs. confused; 3) the intermediate students showed higher emotional responses than holistic and analytic students especially in regard to the order factor when viewing a webpage.
- Published
- 2013
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19. Tradeoff Analysis for Optimal Multiobjective Inventory Model
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Longsheng Cheng, Wei-Shan Teng, Ming-Chang Lee, Dingwei Song, Li-Hua Huang, and Ching-Shih Tsou
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Mathematical optimization ,Article Subject ,Relation (database) ,Computer science ,lcsh:Mathematics ,Applied Mathematics ,Inventory investment ,Control (management) ,Probabilistic logic ,Workload ,lcsh:QA1-939 ,Plot (graphics) ,Inventory theory ,Economic order quantity - Abstract
Deterministic inventory model, the economic order quantity (EOQ), reveals that carrying inventory or ordering frequency follows a relation of tradeoff. For probabilistic demand, the tradeoff surface among annual order, expected inventory and shortage are useful because they quantify what the firm must pay in terms of ordering workload and inventory investment to meet the customer service desired. Based on a triobjective inventory model, this paper employs the successive approximation to obtain efficient control policies outlining tradeoffs among conflicting objectives. The nondominated solutions obtained by successive approximation are further used to plot a 3D scatterplot for exploring the relationships between objectives. Visualization of the tradeoffs displayed by the scatterplots justifies the computation effort done in the experiment, although several iterations needed to reach a nondominated solution make the solution procedure lengthy and tedious. Information elicited from the inverse relationships may help managers make deliberate inventory decisions. For the future work, developing an efficient and effective solution procedure for tradeoff analysis in multiobjective inventory management seems imperative.
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- 2013
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20. Tic21 Is an Essential Translocon Component for Protein Translocation across the Chloroplast Inner Envelope Membrane
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Yi-Shan Teng, Yong Jik Lee, Inhwan Hwang, Hsou-min Li, Lih-Jen Chen, and Yi-shin Su
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Chloroplasts ,Molecular Sequence Data ,Tic complex ,Arabidopsis ,Germination ,Plant Science ,Biology ,Twin-arginine translocation pathway ,Inner membrane ,Amino Acid Sequence ,Cloning, Molecular ,Protein Precursors ,Integral membrane protein ,Research Articles ,Arabidopsis Proteins ,Membrane Proteins ,Membrane Transport Proteins ,food and beverages ,Intracellular Membranes ,Cell Biology ,Translocon ,Cell biology ,Protein Transport ,Phenotype ,Chloroplast DNA ,Biochemistry ,Mutation ,Translocase of the inner membrane ,Sequence Alignment ,Chloroplast inner membrane - Abstract
An Arabidopsis thaliana mutant defective in chloroplast protein import was isolated and the mutant locus, cia5, identified by map-based cloning. CIA5 is a 21-kD integral membrane protein in the chloroplast inner envelope membrane with four predicted transmembrane domains, similar to another potential chloroplast inner membrane protein-conducting channel, At Tic20, and the mitochondrial inner membrane counterparts Tim17, Tim22, and Tim23. cia5 null mutants were albino and accumulated unprocessed precursor proteins. cia5 mutant chloroplasts were normal in targeting and binding of precursors to the chloroplast surface but were defective in protein translocation across the inner envelope membrane. Expression levels of CIA5 were comparable to those of major translocon components, such as At Tic110 and At Toc75, except during germination, at which stage At Tic20 was expressed at its highest level. A double mutant of cia5 At tic20-I had the same phenotype as the At tic20-I single mutant, suggesting that CIA5 and At Tic20 function similarly in chloroplast biogenesis, with At Tic20 functioning earlier in development. We renamed CIA5 as Arabidopsis Tic21 (At Tic21) and propose that it functions as part of the inner membrane protein-conducting channel and may be more important for later stages of leaf development.
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- 2006
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21. Effect of experimental factors on nitrobenzaldehyde photoisomerization
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Haw-Tarn Lin, Yaw-Jian Lin, Li-Shan Teng, and Ampere Lee
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Environmental Engineering ,Photoisomerization ,Photochemistry ,Ultraviolet Rays ,Health, Toxicology and Mutagenesis ,chemistry.chemical_element ,Quantum yield ,medicine.disease_cause ,Catalysis ,Reaction rate ,Xenon ,Isomerism ,medicine ,Environmental Chemistry ,Absorption (electromagnetic radiation) ,Photodegradation ,Nitrobenzenes ,Aldehydes ,Chemistry ,Public Health, Environmental and Occupational Health ,General Medicine ,General Chemistry ,Pollution ,Benzaldehydes ,Photocatalysis ,Environmental Pollutants ,Ultraviolet - Abstract
The objective of this study was to compare the effect of various experimental factors on the photoisomerization of nitrobenzaldehyde. The experimental factors included light source, light energy, exposure time, light path distance and the concentration of nitrobenzaldehyde. The results showed that the photoisomerization of nitrobenzaldehyde increased with increasing light exposure. Different light sources and light path distances demonstrated significant impact on the reaction rate constants and half-lives of nitrobenzaldehyde. Although the light energy of UV photoreactor was 47% lower than that of xenon photoreactor, quantum yield and UV/VIS absorption pattern confirmed the finding that the effect of ultraviolet photoreactor on nitrobenzaldehyde was similar to that of xenon photoreactor with the light path of 17 cm. It was caused by the shorter wavelength of UV photoreactor mainly on 254 nn. The product of nitrobenzaldehyde photoisomerization, nitrosobenzoic acid, was detected from samples after 5 or 10 min exposure of three light sources. The concentrations of nitrosobenzoic acid increased with the increasing of exposure time up to 20 or 60 min.
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- 2002
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22. Differential age-dependent import regulation by signal peptides
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Po-Ting Chan, Hsou-min Li, and Yi-Shan Teng
- Subjects
Signal peptide ,Chloroplasts ,QH301-705.5 ,Plant Cell Biology ,Arabidopsis ,Sequence alignment ,Protein Sorting Signals ,Biology ,Chloroplast ,General Biochemistry, Genetics and Molecular Biology ,Transit Peptide ,Molecular Cell Biology ,Amino Acid Sequence ,Protein Precursors ,Biology (General) ,Peptide sequence ,Gene ,Plant Proteins ,General Immunology and Microbiology ,General Neuroscience ,Peas ,Plants, Genetically Modified ,Cell biology ,Transport protein ,Protein Transport ,Biochemistry ,Membranes and Sorting ,Chloroplast Proteins ,General Agricultural and Biological Sciences ,Sequence Alignment ,Chlamydomonas reinhardtii ,Research Article - Abstract
The import of certain proteins into chloroplasts is dependent on the age of the organelle, with age-dependent import being controlled by a specific motif within the signal peptide., Gene-specific, age-dependent regulations are common at the transcriptional and translational levels, while protein transport into organelles is generally thought to be constitutive. Here we report a new level of differential age-dependent regulation and show that chloroplast proteins are divided into three age-selective groups: group I proteins have a higher import efficiency into younger chloroplasts, import of group II proteins is nearly independent of chloroplast age, and group III proteins are preferentially imported into older chloroplasts. The age-selective signal is located within the transit peptide of each protein. A group III protein with its transit peptide replaced by a group I transit peptide failed to complement its own mutation. Two consecutive positive charges define the necessary motif in group III signals for older chloroplast preference. We further show that different members of a gene family often belong to different age-selective groups because of sequence differences in their transit peptides. These results indicate that organelle-targeting signal peptides are part of cells' differential age-dependent regulation networks. The sequence diversity of some organelle-targeting peptides is not a result of the lack of selection pressure but has evolved to mediate regulation., Author Summary It is well known that some genes are preferentially transcribed in young tissues and others are specifically expressed in aging tissue, but protein import into organelles is generally thought to be constitutive and independent of age. In this study, we find that, contrary to expectation, in higher plants the import of proteins into chloroplasts is indeed dependent on the age of the organelle. We find that chloroplast precursor proteins can be divided into three age-selective groups, with each having a preference for chloroplasts of a different age. The age-selective signal is located within the signal peptide of each protein that controls organelle import, and we further identify a motif that is necessary to make a signal peptide target older chloroplasts preferentially. We show that different members of a gene family often belong to different age-selective groups, and that changing the sequence motifs within a protein's signal peptide can change its age selectivity. These results indicate that organelle-targeting signal peptides are one set of tools available to multicellular organisms for differential age-specific regulation.
- Published
- 2012
23. Effect of photosensitizer diethylamine on the photodegradation of polychlorinated biphenyls
- Author
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Li-Shan Teng, Yi-Ling Chen, Yaw-Jian Lin, and Ampere Lee
- Subjects
Reaction mechanism ,Environmental Engineering ,Chromatography, Gas ,Xenon ,Diethylamines ,Light ,Health, Toxicology and Mutagenesis ,Quantum yield ,Photochemistry ,chemistry.chemical_compound ,Environmental Chemistry ,Photosensitizer ,Photodegradation ,Diethylamine ,Persistent organic pollutant ,Photolysis ,Photosensitizing Agents ,Public Health, Environmental and Occupational Health ,General Medicine ,General Chemistry ,Pollution ,Polychlorinated Biphenyls ,Kinetics ,Congener ,chemistry ,Environmental chemistry ,Gas chromatography - Abstract
The objective of this study was to investigate the effect of diethylamine and xenon simulated sunlight on the photodegradation of two forms of PCBs including PCBs in transformer oil and PCB congener 138. The result of GC chromatograms illustrated the shifting pattern of higher chlorinated biphenyls in transformer oil degraded to lower chlorinated biphenyls with the extension of exposure time. The effect of diethylamine and xenon simulated sunlight was significant on the photodegradation of both PCBs in transformer oil and congener 138. The initial degradation rates of congener 138 (1.14 x 10(-9) to 4.47 x 10(-9) mol l(-1) h(-1)) were in direct proportion to the initial concentrations of congener 138 which confirmed the pseudo-first-order reaction of PCB photodegradation. The apparent quantum yields (phi) of congener 138 using diethylamine in xenon photoreactor were ranged between 2.08 x 10(-2) and 9.8 x 10(-4). PCB congeners 123, 97, 70, 67, 33, 29, 17, 12, and 9 were detected as the descendants of the photodegradation of congener 138 through dechlorination. The major pathway of congener 138 photodegradation in this study was via para-dechlorination.
- Published
- 2003
24. Biology of a Novel Mycobacteriophage, SWU1, Isolated from Chinese Soil as Revealed by Genomic Characteristics
- Author
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Xiangyu Fan, Hong-Hai Wang, Tie-Shan Teng, and Jianping Xie
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Whole genome sequencing ,China ,biology ,Mycobacteriophages ,Host (biology) ,Mycobacterium smegmatis ,Molecular Sequence Data ,Immunology ,Genomics ,Genome, Viral ,biology.organism_classification ,Microbiology ,Genome Announcements ,Bacteriophage ,Virology ,Insect Science ,DNA, Viral ,Soil microbiology ,Soil Microbiology ,Mycobacterium - Abstract
Mycobacteriophage SWU1 is a newly isolated phage from a soil sample collected at Gongping village, Pingchang County, Sichuan Province, China, using Mycobacterium smegmatis mc 2 155 as a host. Plaques of SWU1 appear as a unique bull's-eye on an M. smegmatis lawn. In this paper, we report the complete genome sequence of SWU1 and some major findings from the analysis result.
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- 2012
- Full Text
- View/download PDF
25. Differential Age-Dependent Import Regulation by Signal Peptides.
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Yi-Shan Teng, Po-Ting Chan, and Hsou-min Li
- Subjects
- *
SIGNAL peptides , *CHLOROPLASTS , *MOLECULAR genetics , *PEPTIDES , *PROTEINS , *GENETIC regulation - Abstract
Gene-specific, age-dependent regulations are common at the transcriptional and translational levels, while protein transport into organelles is generally thought to be constitutive. Here we report a new level of differential age-dependent regulation and show that chloroplast proteins are divided into three age-selective groups: group I proteins have a higher import efficiency into younger chloroplasts, import of group II proteins is nearly independent of chloroplast age, and group III proteins are preferentially imported into older chloroplasts. The age-selective signal is located within the transit peptide of each protein. A group III protein with its transit peptide replaced by a group I transit peptide failed to complement its own mutation. Two consecutive positive charges define the necessary motif in group III signals for older chloroplast preference. We further show that different members of a gene family often belong to different age-selective groups because of sequence differences in their transit peptides. These results indicate that organelle-targeting signal peptides are part of cells' differential age-dependent regulation networks. The sequence diversity of some organelle-targeting peptides is not a result of the lack of selection pressure but has evolved to mediate regulation. [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
- View/download PDF
26. Association of obesity with orbital fat expansion in thyroid eye disease
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Po-Chin Kuo, Shu-Chun Kuo, Yi-Shan Teng, and Chun-Chieh Lai
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Obesity ,Orbital fat ,Thyroid eye disease ,Proptosis ,Exophthalmos ,Ophthalmology ,RE1-994 - Abstract
Abstract Background To investigate the association between obesity and orbital fat expansion in proptosis of thyroid eye disease. Methods This observational study retrospectively enrolled 87 participants who received orbital fat decompression surgery for thyroid eye disease. Primary outcome measures included average body mass index (BMI) and the proportion of the study sample with overweight and obesity, compared with the general Taiwanese population. Secondary outcome measures included the association of obesity with proptosis severity, removed fat volume, and thyroid status. Results The average BMI (25.59 ± 4.36 kg/m2) of the study sample was significantly higher than that in the general population of Taiwan (24.5 kg/m2; P = 0.012). Participants with overweight (19.52 ± 3.52 mm) and obesity (21.25 ± 3.76 mm) exhibited significantly more severe proptosis than participants without overweight (18.05 ± 3.37 mm) and without obesity (18.09 ± 3.02 mm; P = 0.029 and P
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- 2025
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- View/download PDF
27. Effect of experimental factors on nitrobenzaldehyde photoisomerization.
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Yaw-Jian Lin, Lee, Ampere, Li-Shan Teng, and Haw-Tarn Lin
- Subjects
- *
PHOTOCATALYSIS , *BENZALDEHYDE - Abstract
Compares the effect of various experimental factors on the photoisomerization of nitrobenzaldehyde. Light source; Light energy; Exposure time; Light path distance; Concentration of nitrobenzaldehyde.
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- 2002
- Full Text
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28. Flavones 7,8-DHF, Quercetin, and Apigenin Against Tau Toxicity via Activation of TRKB Signaling in ΔK280 TauRD-DsRed SH-SY5Y Cells
- Author
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Ni-Ni Chiang, Te-Hsien Lin, Yu-Shan Teng, Ying-Chieh Sun, Kuo-Hsuan Chang, Chung-Yin Lin, Hsiu Mei Hsieh-Li, Ming-Tsan Su, Chiung-Mei Chen, and Guey-Jen Lee-Chen
- Subjects
Tau ,Alzheimer’s disease ,quercetin ,apigenin ,TRKB agonist ,7,8-dihydroxyflavone ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Alzheimer’s disease (AD) is a progressive neurodegenerative disease with memory loss and cognitive decline. Neurofibrillary tangles (NFTs) formed by hyperphosphorylated Tau protein are one of the pathological hallmarks of several neurodegenerative diseases including AD. Heat shock protein family B (small) member 1 (HSPB1) is a molecular chaperone that promotes the correct folding of other proteins in response to environmental stress. Nuclear factor erythroid 2-like 2 (NRF2), a redox-regulated transcription factor, is the master regulator of the cellular response to excess reactive oxygen species. Tropomyosin-related kinase B (TRKB) is a membrane-bound receptor that, upon binding brain-derived neurotrophic factor (BDNF), phosphorylates itself to initiate downstream signaling for neuronal survival and axonal growth. In this study, four natural flavones such as 7,8-dihydroxyflavone (7,8-DHF), wogonin, quercetin, and apigenin were evaluated for Tau aggregation inhibitory activity and neuroprotection in SH-SY5Y neuroblastoma. Among the tested flavones, 7,8-DHF, quercetin, and apigenin reduced Tau aggregation, oxidative stress, and caspase-1 activity as well as improved neurite outgrowth in SH-SY5Y cells expressing ΔK280 TauRD-DsRed folding reporter. Treatments with 7,8-DHF, quercetin, and apigenin rescued the reduced HSPB1 and NRF2 and activated TRKB-mediated extracellular signal-regulated kinase (ERK) signaling to upregulate cAMP-response element binding protein (CREB) and its downstream antiapoptotic BCL2 apoptosis regulator (BCL2). Knockdown of TRKB attenuated the neuroprotective effects of these three flavones. Our results suggest 7,8-DHF, quercetin, and apigenin targeting HSPB1, NRF2, and TRKB to reduce Tau aggregation and protect cells against Tau neurotoxicity and may provide new treatment strategies for AD.
- Published
- 2021
- Full Text
- View/download PDF
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