46 results on '"Ai-hua Chen"'
Search Results
2. Elastic and inelastic interactions of periodic solutions for the 2+1-dimensional Ito equation
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Gu-Hao Lu and Ai-Hua Chen
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Plane-soliton ,Periodic-soliton ,Resonant-periodic ,Physics ,QC1-999 - Abstract
In this paper, based on the bilinear form, we obtain 2-plane-soliton and 4-plane-soliton solutions for the 2+1-dimensional Ito equation. Particularly, both the elastic interactions and inelastic interactions of periodic waves are obtained. The existence conditions of periodic solitons and resonant solutions are provided. The asymptotic behaviors of the solutions are analyzed in detail to study the elastic and inelastic interactions. The interactional properties of obtained solutions are also investigated graphically.
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- 2022
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3. Hybrid exact solutions of the (3 + 1)-dimensional variable-coefficient nonlinear wave equation in liquid with gas bubbles
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Ya-Ru Guo and Ai-Hua Chen
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Variable-coefficient nonlinear wave equation ,Bilinear form ,Periodic solution ,Lump solution ,Lump-periodic solution ,Physics ,QC1-999 - Abstract
In this paper, we study some exact solutions of the (3 + 1)-dimensional variable-coefficient nonlinear wave equation in liquid with gas bubbles. Based on a given transformation and the bilinear form, together with symbolic computations, we obtain the multi-soliton solutions and periodic solutions including X-periodic, Y-periodic and 2-periodic wave solutions. By using of the long wave limit method, we obtain lump solutions and lump-periodic solutions that lumps moving on a background with different periodic waves. The properties of the solutions are analyzed graphically.
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- 2021
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4. Exact solutions of the classical Boussinesq system
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Hong-Qian Sun and Ai-Hua Chen
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Classical Boussinesq system ,bilinear form ,solitary wave solution ,periodic solitary solution ,rational solution ,Science - Abstract
In this paper, we study exact solutions of the classical Boussinesq (CB) system, which describes propagations of shallow water waves. By using the bilinear form, with exponential expansions, we obtain solitary wave solutions of the CB system. Based on asymptotic analysis method, we study the elastic and elastic–inelastic–coupled interactions of the obtained solitary wave solutions. With extended three–wave method, we obtain the periodic solitary solution of the CB system. And with polynomial expansions, we get the rational solutions of the CB system. These interesting exact solutions may be useful in the study of some phenomena appeared in shallow water waves.
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- 2018
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5. MiR-34a and miR-206 act as novel prognostic and therapy biomarkers in cervical cancer
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Ai-Hua Chen, Yu-E Qin, Wen-Fan Tang, Jing Tao, Hua-mei Song, and Manzhen Zuo
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MiR-34a ,MiR-206 ,qRT-PCR ,Cervical cancer ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 ,Cytology ,QH573-671 - Abstract
Abstract Background Recent evidence indicated that the aberrant expression of microRNA plays a crucial role in the development of cervical cancer. The overall shorter survival was strongly related to the abnormal expression of microRNA-34a (miR-34a) and microRNA-206 (miR-206), which target B cell lymphoma-2(Bcl2) and c-Met. Hepatocyte growth factor (HGF)/c-Met pathway is related to the occurrence, development and prognosis of cervical cancer, and c-Met is significantly overexpressed in cervical squamous cell carcinoma. Bcl2 is also considered to be a promising target for developing novel anticancer treatments. Methods In this study, we detect the expression of miR-34a and miR-206 in the cervical cancer tissue through quantificational real-time polymerase chain reaction (qRT-PCR) assay, and the expression of Bcl2 and c-Met from cervical cancer tissue were detected by immunohistochemistry. Results The expression of miR-34a and miR-206 were down-regulated in the cervical cancer tissue through qRT-PCR assay. As target genes of miR-34a and miR-206, Bcl2 and c-Met were up-regulated in cervical cancer tissues through qRT-PCR assay and immunohistochemistry. Kaplan–Meier and log-rank analysis revealed that down-regulated expression of miR-34a and miR-206 were strongly related to shorter overall survival. Multivariate Cox proportional hazards model for all variables that were statistically significant in the univariate analysis demonstrated that miR-34a (P = 0.038) and miR-206 (P = 0.008) might be independent prognostic factors for overall survival of patients suffering from cervical cancer. Conclusions The up-regulation of Bcl2 and c-Met promotes the cervical cancer’s progress, and the expression of miR-34a and miR-206 significantly correlated with the progression and prognosis in cervical cancer. All of these suggested that miR-34a and miR-206 might be the novel prognostic and therapy tools in cervical cancer.
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- 2017
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6. Hemoglobin A1c and risk of left atrial thrombus and spontaneous echo contrast in non-valvular atrial fibrillation patients
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Rong-Ren Kuang, Fang-Zhou Liu, Yun-Peng Li, Wei-Dong Lin, Hua-Sheng Liang, and Ai-Hua Chen
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Atrial fibrillation ,Hemoglobin A1c ,Left atrial thrombus ,Spontaneous echo contrast ,Prothrombotic state ,Medicine - Abstract
Abstract Objectives To evaluate the relationship between hemoglobin A1c (HbA1c) and risk of left atrial thrombus/spontaneous echo contrast (LAT/SEC) in non-valvular atrial fibrillation (AF) patients. Methods In this retrospective study, 1158 consecutive non-valvular AF patients undergoing transesophageal echocardiography prior to radiofrequency catheter ablation or electric cardioversion were enrolled. Baseline characteristics were collected and analyzed. Results There were 87 (7.5%) patients with LAT/SEC. The HbA1c levels in the patients with LAT/SEC were significantly higher than that in patients without LAT/SEC (6.13 ± 0.41 vs. 5.89 ± 0.45 μmol/L, P
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- 2017
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7. Female Sex as a Risk Factor for Ischemic Stroke and Systemic Embolism in Chinese Patients With Atrial Fibrillation: A Report From the China‐AF Study
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Di‐Hui Lan, Chao Jiang, Xin Du, Liu He, Xue‐Yuan Guo, Song Zuo, Shi‐Jun Xia, San‐Shuai Chang, Song‐Nan Wen, Jia‐Hui Wu, Yan‐Fei Ruan, De‐Yong Long, Ri‐Bo Tang, Rong‐Hui Yu, Cai‐Hua Sang, Rong Bai, Nian Liu, Chen‐Xi Jiang, Song‐Nan Li, Jian‐Zeng Dong, Gregory Y. H. Lip, Ai‐Hua Chen, and Chang‐Sheng Ma
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atrial fibrillation ,ischemic stroke ,women ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background Previous studies have provided conflicting results as to whether women are at higher risk than men for thromboembolism in the setting of atrial fibrillation (AF). We investigated whether women with AF were at higher risk of ischemic stroke in the China‐AF (China Atrial Fibrillation Registry) Study. Methods and Results A total of 19 515 patients were prospectively enrolled between August 2011 and December 2016 in the China‐AF Study. After exclusion of patients receiving anticoagulation or ablation therapy, 6239 patients (2574 women) with results from at least 6 months of follow‐up were used for the analysis. Cox proportional hazards models were performed to evaluate whether female sex was an independent risk factor for thromboembolism after multivariate adjustment. The primary outcome was the time to the first occurrence of ischemic stroke or systemic embolism. After a mean follow‐up of 2.81±1.46 years, 152 female patients reached the primary outcome, as compared with 172 male patients. Crude incidence rates of thromboembolism between women and men were of borderline statistical significance (2.08 versus 1.68 per 100 patient‐years, P=0.058). After multivariable analysis, female sex was not independently associated with an increased thromboembolism risk (hazard ratio 1.09, 95% confidence interval 0.86‐1.39). There was no significant difference in thromboembolism risk by sex stratified by age and presence or absence of risk factors (P for interaction all >0.1). Conclusions Although crude incidence rates of thromboembolism were higher in Chinese female patients with AF compared with male patients, female sex did not emerge as an independent risk factor for thromboembolism on multivariate analysis. Clinical Trial Registration URL: http://www.chictr.org.cn/. Unique identifier: ChiCTR‐OCH‐13003729.
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- 2018
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8. Diffusion Tensor Imaging Detects Microstructural Differences of Visual Pathway in Patients With Primary Open-Angle Glaucoma and Ocular Hypertension
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Xiang-yuan Song, Zhen Puyang, Ai-hua Chen, Jin Zhao, Xiao-jiao Li, Ya-ying Chen, Wei-jun Tang, and Yu-yan Zhang
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primary open-angle glaucoma ,ocular hypertension ,diffusion tensor imaging ,voxel-based analysis ,central nerve system ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Ocular hypertension (OHT), the common situation in adult patients in the outpatients, occurs ∼5% worldwide. However, there are still some practical problems in differentiation of OHT with early primary open-angle glaucoma (POAG) using current standard methods. Application of high resolution diffusion tensor imaging (DTI) enables us to the differentiate axonal architecture of visual pathway between POAG and OHT subjects. Among 32 POAG patients recruited (15 OHT and 14 control subjects), 62.5% of glaucoma were in early stage for the current study. All subjects underwent ophthalmological assessments with standard automated perimetry and optical coherence tomography (OCT). DTI was applied to measure fraction anisotropy (FA) and mean diffusivity (MD) of optic tract (OT), lateral geniculate body (LGN) and optic radiation (OR) using voxel-based analysis. Our data demonstrated that FA values of bilateral OR in POAG were significantly lower in the right or left than that of OHT patients (left OR: 0.51 ± 0.04 vs. 0.54 ± 0.03, p < 0.05; right OR: 0.51 ± 0.05 vs. 0.54 ± 0.03, p < 0.05). In right LGN, MD values were higher in POAG patients compared with OHT subjects (9.81 ± 1.45 vs. 8.23 ± 0.62, p < 0.05). However, no significant difference of all of the DTI parameters was observed between OHT and control subjects. DTI parameters in POAG patients were positively correlated with morphological and functional measurements (p < 0.05). Vertical cup to disc ratio (VCDR) was correlated with ipsilateral FA of OT (p < 0.05), ipsilateral MD of OT (p < 0.05), ipsilateral MD of LGN (p < 0.05), and contralateral MD of OT (p < 0.05). Mean deviation of visual field (MDVF) was correlated with ipsilateral FA of OT (p < 0.05), ipsilateral MD of OT (p < 0.05), and ipsilateral FA of LGN (p < 0.05). Our study demonstrated that DTI can differentiate POAG from OHT subjects in optic pathway, particularly in early POAG, and DTI parameters can quantify the progression of POAG.
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- 2018
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9. QTL Detection and Epistasis Analysis for Heading Date Using Single Segment Substitution Lines in Rice (Oryza sativa L.)
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Guang-xian LI, Ai-hua CHEN, Xu LIU, Wen-ying WANG, Han-feng DING, Jun LI, Wei LIU, Si-shen LI, and Fang-yin YAO
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rice (Oryza sativa L.) ,single segment substitution lines ,heading date ,epistasis ,Agriculture (General) ,S1-972 - Abstract
Heading date of rice is a key agronomic trait determining cultivated areas and seasons and affecting yield. In the present study, five primary single segment substitution lines with the same genetic background were used to detect quantitative trait loci (QTLs) for heading date in rice. Two QTLs, qHD3 and qHD6 on the short arm of chromosome 3 and the short arm of chromosome 6, respectively, were identified under natural long-day (NLD). Nineteen secondary single segment substitution lines (SSSLs) and seven double segments pyramiding lines were designed to map the two QTLs and to evaluate their epistatic interaction between them. By overlapping mapping, qHD3 was mapped in a 791-kb interval between SSR markers RM3894 and RM569 and qHD6 in a 1125-kb interval between RM587 and RM225. Results revealed the existence of epistatic interaction between qHD3 and qHD6 under natural long-day (NLD). It was also found that qHD3 and qHD6 had significant effects on plant height and yield traits, indicating that both of the QTLs have pleiotropic effects.
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- 2014
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10. Nickel(II) Coordination Complex Constructed from Benzimidazole and Pyridine-2,6-dicarboxylate Co-ligands: Synthesis, Crystal Structure, Thermal Behavior, and Photoluminescence
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Ai-Hua, Chen, Ai-Jian, Wang, Ling, Wang, and Yu-Tong, Sun
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- 2018
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11. A New Copper(I) Complex Based on 4-amino-3,5-bis(3-pyridyl)-1,2,4-triazole: Synthesis, Crystal Structure, Theoretical Study, Thermal Behavior and Luminescence
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AI-HUA, CHEN, SU-CI, MENG, KAI, ZHOU, CONG-CONG, WANG, WEI, ZHAO, AI-JIAN, WANG, and JUN, QIAN
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- 2017
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12. Dynamic properties of interactional solutions for the (4 + 1)-dimensional Fokas equation
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Jie Yan, Ai-Hua Chen, and Ya-Ru Guo
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Physics ,Complex conjugate ,Applied Mathematics ,Mechanical Engineering ,Mathematical analysis ,One-dimensional space ,Phase (waves) ,Aerospace Engineering ,Ocean Engineering ,Bilinear form ,Nonlinear Sciences::Exactly Solvable and Integrable Systems ,Control and Systems Engineering ,Periodic wave ,Electrical and Electronic Engineering - Abstract
In this paper, based on the bilinear form, we give multi-solitary wave solutions of the $$(4+1)$$ -dimensional Fokas equation. From the obtained multi-solitary wave solutions, with special parameters, we derive resonant solutions of N-solitary waves. For complex conjugate parameters, we analyze interactions of two periodic waves, interactions of a solitary wave and a periodic wave by making use of their phase shifts. Particularly, the intermediate processes of elastic interactions are analyzed in detail, and interesting fusional and fissionable phenomena are found. The asymptotic interactional behaviors for these solutions are analyzed theoretically and illustrated graphically.
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- 2021
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13. Effects of enterostomal therapists training: Evaluated with Kirkpatrick’s model
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Ai-Hua Chen, Hai-Hong Jiang, and Shenlv Ying
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Outreach ,Medical education ,Work status ,Quality of teaching ,Project commissioning ,Nursing research ,Specialty ,Survey result ,Nurse education ,Psychology - Abstract
Objective To evaluate the effect of training for enterostomal therapists (ETs) based on Kirkpatrick’s Four Levels of Training Evaluation model. To understand ET trainees' work status after completing the Enterostomal Therapy Nursing Education Program (ETNEP) course as well as the ET students' satisfaction of teachers and studying conditions when completing the Wenzhou ETNEP. Methods One hundred and sixty-nine students who had completed the Wenzhou ETNEP were evaluated by Kirkpatrick’s Four Levels of Training Evaluation model from four perspectives, namely the Reaction, Learning, Behaviour and Result levels. Results The overall satisfaction of the Wenzhou ETNEP was high in the Reaction level. In the Reaction Level the average matrix score of training programs and teachers was: >1.4. In the Behavioural level, 103 ETs participated in stoma and wound clinics, with 99.2% of them actively promoting ET nursing knowledge and 18 ETs (13.2%) serving as teachers of ETNEP schools. One hundred and sixteen ETs (85.3%) conducted ET-related nursing courses for other nursing staff and 58.8% of ETs had conducted continued education courses. Of the ETs, 22.8% participated in the hospital’s outpatient or outreach stoma and wound care services. In the Result level, 58.8% of ETs participated in nursing research of the specialty, 29.4% of ETs had obtained scientific research funds and 136 ETs had published papers. Conclusion Students are satisfied with the ETNEP training they received. Their ability to work and function as ETs has improved on completion of their training. In addition, their professional standing has improved, with all ETNEP participants having achieved good results in the fields of specialised nursing, extended nursing, scientific research and teaching. However, in reviewing the survey results and aligning these with current standards of practice and employment of ETs in China, there is the need to modify parts of the ETNEP (such as raising the degree of ET students' entry criteria), standardise teaching materials and establish communication processes with mechanisms for exchanging ET teachers nationally and internationally, to ensure the quality of teaching and improve the quality of specialised ET nursing.
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- 2019
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14. Integrating Pedagogy and Practice: The Impact of Academic Service Learning in the TEFL Context in Higher Education.
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Ai-hua Chen
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SERVICE learning ,CAREER development ,SCHOOL children ,ENGLISH as a foreign language ,HIGHER education ,FOREIGN language education - Abstract
This study explored the transformative potential of academic service learning (ASL) within a Taiwanese university setting in the context of teaching English as a foreign language. The participants were students majoring in English, enrolled in a semester-long English teaching course. Their academic servicelearning project involved teaching English to students in rural primary schools. By adopting both quantitative and qualitative approaches, this study illuminated how ASL influences students’ academic, personal, and interpersonal development. Quantitative findings revealed a significant level of satisfaction with the ASL course and noted substantial gains in personal growth, professional development, and civic engagement domains. As for the qualitative data, the study brought forth the concrete ways in which the academic servicelearning curriculum has augmented students’ professional knowledge, skills, and attitudes. While the results aligned with many previous studies asserting the benefits of service learning in enhancing academic and practical learning outcomes, they also shed light on the potential areas of improvement, particularly in fostering civic engagement. Overall, this study underscored the transformative potential of a well-structured academic service-learning curriculum in enriching student learning experiences, bridging the gap between theoretical knowledge and real-world application, and cultivating a deeper sense of civic responsibility. [ABSTRACT FROM AUTHOR]
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- 2023
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15. Application of irrigation and negative pressure wound therapy (INPWT) to treat diabetic foot gangrene: a case report
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Ping Zou, Huiling Liu, Ai-Hua Chen, and ChunMei Zhang
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Gangrene ,medicine.medical_specialty ,Debridement ,integumentary system ,business.industry ,medicine.medical_treatment ,Treatment process ,Surgical debridement ,medicine.disease ,Primary disease ,Diabetic foot ,Surgery ,Blood pressure ,Negative-pressure wound therapy ,medicine ,business - Abstract
This case study summarises the treatment of a patient with diabetic foot gangrene. By undergoing irrigation and negative pressure wound therapy (INPWT) with moist dressing, foot amputation was avoided. The treatment process included: the comprehensive assessment of systemic and local condition; choosing suitable debridement such as sharp surgical debridement; preventing the spread of infection; applying INPWT to reduce endotoxin absorption; and active treatments of primary disease such as controlling blood sugar and blood pressure, and improving microcirculation and nutrition. After 2 months of vigorous INPWT, the patient’s wound bed improved. After the application of a moist dressing, the wound closed and healed successfully at 3 months.
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- 2019
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16. Patient-Reported Treatment Satisfaction with Dabigatran versus Warfarin in Patients with Non-Valvular Atrial Fibrillation in China
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Jian-Zeng Dong, Shijun Xia, San-Shuai Chang, Xin Du, Wei Wang, Xue-Yuan Guo, De-Yong Long, Ri-Bo Tang, Ai-Hua Chen, Cai-Hua Sang, Nian Liu, Rong Bai, Danni Zheng, Chen-Xi Jiang, Changsheng Ma, Rong-Hui Yu, Di-Hui Lan, Song-Nan Li, and Yan-Ping Geng
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Male ,China ,medicine.medical_specialty ,030204 cardiovascular system & hematology ,Medication Adherence ,Dabigatran ,03 medical and health sciences ,0302 clinical medicine ,Patient satisfaction ,Surveys and Questionnaires ,Internal medicine ,Atrial Fibrillation ,medicine ,Humans ,030212 general & internal medicine ,Stroke ,Aged ,Aged, 80 and over ,business.industry ,Warfarin ,Anticoagulants ,Atrial fibrillation ,Hematology ,Odds ratio ,Middle Aged ,medicine.disease ,Discontinuation ,Patient Outcome Assessment ,Patient Satisfaction ,Propensity score matching ,Costs and Cost Analysis ,Female ,Self Report ,business ,medicine.drug - Abstract
Background Anti-coagulant therapy satisfaction for patients with atrial fibrillation is a critical issue, which impacts on their treatment adherence and clinical outcomes. The disadvantages of long-term warfarin treatment are well-described, and novel oral anti-coagulants have become an alternative option. Materials and Methods We compared patient-reported treatment satisfaction with dabigatran versus warfarin in non-valvular atrial fibrillation (NVAF) patients in China. Treatment satisfaction was assessed using the Anti-Clot Treatment Scale (ACTS) questionnaire, which included a 12-item ACTS Burdens scale and a 3-item ACTS Benefits scale. Results Among 834 patients, 246 patients (29.5%) were taking dabigatran and the others were on warfarin. Propensity score matching was employed to identify 182 patient pairs with balanced baseline characteristics. The global ACTS Burdens score and the global ACTS Benefits score were comparable between the dabigatran and warfarin groups (44.86 ± 3.95 vs. 44.28 ± 3.51, p = 0.423; 11.49 ± 2.92 vs. 11.42 ± 3.03, p = 0.194, respectively). The monthly cost of dabigatran was significantly higher compared with that of warfarin due to a lack of insurance coverage (USD 176.78 ± 9.15 vs. USD 2.49 ± 0.76, p = 0.000). The discontinuation rate of dabigatran was significantly higher than warfarin at the 6-month follow-up (33.5% vs. 19.2%, p = 0.003). Adjusted logistic regression showed that dabigatran was associated with a significant greater odds of non-persistence (odds ratio: 2.13, 95% confidence interval: 1.27–3.59, p = 0.004). Conclusion Dabigatran therapy in patients with NVAF in China associated with no improvement in satisfaction and a higher discontinuation rate compared with warfarin therapy largely due to increased economic burden.
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- 2018
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17. Interactional solutions of a lump and a solitary wave for two higher-dimensional equations
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Ai-Hua Chen and Hong-Qian Sun
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Physics ,Fusion ,Fission ,Applied Mathematics ,Mechanical Engineering ,Mathematical analysis ,Aerospace Engineering ,Bilinear interpolation ,Ocean Engineering ,01 natural sciences ,Nonlinear Sciences::Exactly Solvable and Integrable Systems ,Transformation (function) ,Control and Systems Engineering ,0103 physical sciences ,Electrical and Electronic Engineering ,010306 general physics ,Nonlinear Sciences::Pattern Formation and Solitons ,010301 acoustics ,Scaling - Abstract
In this paper, by using the bilinear equation and different test functions, we obtain lump–bell solutions for the $$(4+1)$$ -dimensional Fokas equation, which describe nonelastic and elastic interactions. We consider various interactions of the lump–bell solutions including fusion, fission, catch-up and head-on. The asymptotic behaviors and dynamics of lump–bell solutions are analyzed graphically. With a scaling transformation, we also obtain the lump–kink solution which describes elastic interactions of a lump- and a kink-type wave for the $$(3+1)$$ -dimensional potential Yu–Toda–Sasa–Fukuyama equation.
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- 2018
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18. Rational Solutions and Lump Solutions of the Potential YTSF Equation
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Ai-Hua Chen and Hong-Qian Sun
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Physics ,0103 physical sciences ,General Physics and Astronomy ,Applied mathematics ,Physical and Theoretical Chemistry ,Bilinear form ,010306 general physics ,010301 acoustics ,01 natural sciences ,Mathematical Physics - Abstract
By using of the bilinear form, rational solutions and lump solutions of the potential Yu–Toda–Sasa–Fukuyama (YTSF) equation are derived. Dynamics of the fundamental lump solution, n 1-order lump solutions, and N-lump solutions are studied for some special cases. We also find some interaction behaviours of solitary waves and one lump of rational solutions.
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- 2017
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19. Lump and lump–kink solutions of the (3+1)-dimensional Jimbo–Miwa and two extended Jimbo–Miwa equations
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Hong-Qian Sun and Ai-Hua Chen
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Applied Mathematics ,One-dimensional space ,Mathematical analysis ,Bilinear form ,01 natural sciences ,Computer Science::Robotics ,High Energy Physics::Theory ,Nonlinear Sciences::Exactly Solvable and Integrable Systems ,Mathematics::Quantum Algebra ,0103 physical sciences ,010306 general physics ,Nonlinear Sciences::Pattern Formation and Solitons ,010301 acoustics ,Mathematics ,Mathematical physics - Abstract
In this paper, we study the lump solutions and their dynamics of the ( 3 + 1 ) -dimensional Jimbo–Miwa equation and two extended Jimbo–Miwa equations via bilinear forms. Based on the obtained lump solutions, the lump–kink solution which contains interaction between a lump and a kink wave of the ( 3 + 1 ) -dimensional Jimbo–Miwa equation is also obtained.
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- 2017
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20. Hydrogen sulfide inhibits MPP+-induced aldehyde stress and endoplasmic reticulum stress in PC12 cells: involving upregulation of BDNF
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Ping Zhang, Fan Xiao, Hong-Feng Gu, Ai-Hua Chen, Xiao-Qing Tang, Wei Zou, and Chun-Yan Wang
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0301 basic medicine ,Brain-derived neurotrophic factor ,Endoplasmic reticulum ,Neurotoxicity ,Cell Biology ,Tropomyosin receptor kinase B ,Biology ,medicine.disease ,Cell biology ,03 medical and health sciences ,chemistry.chemical_compound ,030104 developmental biology ,0302 clinical medicine ,Downregulation and upregulation ,Biochemistry ,chemistry ,medicine ,Unfolded protein response ,K252a ,030217 neurology & neurosurgery ,Intracellular - Abstract
We have previously demonstrated the protective action of hydrogen sulfide (H2S) in 1-Methy-4-Phenylpyridinium Ion (MPP+)-induced neurotoxicity. However, the exact mechanisms of this protection remain largely unknown. Aldehyde stress and endoplasmic reticulum (ER) stress play significant roles in the neurotoxicity of MPP+. Brain derived neurotrophic factor (BDNF) is an important endogenous neuroprotectant. Therefore, we speculated that the protection of H2S against MPP+ neurotoxicity results from inhibiting MPP+-induced aldehyde stress and ER stress via upregulation of BDNF. In the present study, we found that NaHS, a donor of H2S, inhibited MPP+-induced aldehyde stress (the accumulations of the intracellular 4-HNE and MDA) and ER stress (the increases in the expressions of GRP78 and Cleaved-caspase-12) in PC12 cells and upregulated the BDNF expression in MPP+-exposed PC12 cells. Furthermore, we found that pretreatment of PC12 cells with K252a, an inhibitor of the BDNF receptor TrkB, not only markedly reversed the inhibitiory role of NaHS in MPP+-induced aldehyde stress and ER stress, but also ablated the protection of NaHS against MPP+-induced neurotoxicity. These data demonstrated that the protective role of H2S against MPP+-induced neurotoxicity by inhibiting aldehyde stress and ER stress, which is involved in upregulation of BDNF.
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- 2016
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21. Parents' perspectives on the effects of the primary EFL education policy in Taiwan
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Ai-hua Chen
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Linguistics and Language ,Government ,Language planning ,Political science ,Stress (linguistics) ,Pedagogy ,English education ,Primary level ,English language ,Education policy ,Second language instruction ,Language and Linguistics ,Education - Abstract
It has been almost a decade since the introduction of the primary EFL education policy in Taiwan. Many controversial issues and problems have emerged from this implementation that continue to constitute great challenges for the Taiwanese government in reforming current policies and practices related to English language teaching at the primary level. The purpose of this study was to explore these implementation problems and issues that have arisen through an investigation of Grade 5 parents' perspectives on the effects of the primary EFL education policy using questionnaires and follow-up interviews. The results of the study show that parents place an overemphasis on English education policy, reflecting their worries and insecurities that derive from the government's stress on international competitiveness, and that this in turn has resulted in parents putting even greater pressure on policy-makers to reform English language education in Taiwan. As a consequence, problems and controversies have arisen rela...
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- 2011
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22. Influence of the channel layer thickness on electrical properties of indium zinc oxide thin-film transistor
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Hongtao Cao, Ai Hua Chen, Qing Wan, Zheng Yu, Zhimin Liu, Lingyan Liang, and Hai Zhong Zhang
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Silicon ,Subthreshold conduction ,business.industry ,Transistor ,chemistry.chemical_element ,Mineralogy ,Sputter deposition ,Condensed Matter Physics ,Atomic and Molecular Physics, and Optics ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,law.invention ,Active layer ,Threshold voltage ,Amorphous solid ,chemistry ,law ,Thin-film transistor ,Optoelectronics ,Electrical and Electronic Engineering ,business - Abstract
Thin-film transistors (TFTs) were fabricated on SiO"2/n^+-Si substrates using amorphous binary In"2O"3-ZnO (a-IZO) films with different thickness for active channel layers deposited by the rf magnetron sputtering at room temperature. The performance of devices was found to be thickness dependent. With the active layer thickness from 33 to 114nm, the field-effect mobility @m"F"E increased from 1.60 to 4.59cm^2/Vs, the threshold voltage V"T"H decreased from 62.26 to 20.82V, and the subthreshold voltage swing S decreased from 4.06V/decade to 1.30V/decade. Further, the dependence of TFTs' electrical properties on active layer thickness was investigated in detail on the basis of free carrier density and interface scattering.
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- 2010
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23. Orientobilharzia turkestanicum is a member of Schistosoma genus based on phylogenetic analysis using ribosomal DNA sequences
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Ai-Hua Chen, Jia Chen, Hong-Bo Ni, Yan-Qing Zhai, Xing-Quan Zhu, Chun-Ren Wang, and Li Li
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Molecular Sequence Data ,Immunology ,Cattle Diseases ,Sheep Diseases ,Trematode Infections ,DNA, Ribosomal ,Polymerase Chain Reaction ,law.invention ,law ,Phylogenetics ,Schistosomatidae ,DNA, Ribosomal Spacer ,RNA, Ribosomal, 28S ,Animals ,Cashmere goat ,Internal transcribed spacer ,Ribosomal DNA ,Phylogeny ,Polymerase chain reaction ,Schistosoma ,Genetics ,Goat Diseases ,Sheep ,Base Sequence ,biology ,Phylogenetic tree ,Goats ,General Medicine ,DNA, Helminth ,biology.organism_classification ,Maximum parsimony ,Infectious Diseases ,Cattle ,Parasitology ,RNA, Helminth ,Sequence Alignment - Abstract
In the present study, samples representing Orientobilharzia turkestanicum from cattle, sheep, cashmere goat and goat in Heilongjiang Province, China, were characterized and grouped genetically by sequences of internal transcribed spacer (ITS, including ITS-1 and ITS2) and 28S ribosomal DNA (28S rDNA). The ITS and 28S rDNA were amplified by polymerase chain reaction (PCR) and then sequenced and compared with that of other members of the Schistosomatidae available in GenBank™, and phylogenetic relationships between them were re-constructed using the neighbor-joining and maximum parsimony methods. The lengths of ITS-1, ITS-2 and 28S rDNA sequences for all O. turkestanicum samples from different hosts were 384 bp, 331 bp and 1304 bp, respectively. While the ITS-1 sequences of O. turkestanicum from each of the four different hosts, and ITS-2 of O. turkestanicum from cattle, sheep and cashmere goat were identical, respectively, the ITS-2 of O. turkestanicum from goat differed from that of O. turkestanicum from cattle, sheep and cashmere goat by one nucleotide. The 28S rDNA sequences of O. turkestanicum from sheep and cashmere goat were identical, but differed from that of O. turkestanicum from cattle and goat by two nucleotides, with the latter two also having identical 28S rDNA sequence. Phylogenetic analyses based on the combined sequences of the ITS-1 and ITS-2, or the 28S rDNA sequences placed O. turkestanicum within the genus Schistosoma , and it was phylogenetically closer to the African schistosome group than to the Asian schistosome group. These results should have implications for studying the origin and evolution of O. turkestanicum and other members of the Schistosomatidae.
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- 2009
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24. A New Facile Approach to the Synthesis of 3-Methylthio-Substituted Furans, Pyrroles, Thiophenes, and Related Derivatives
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Zihua Wang, Yuanjiang Pan, Meng Gao, Guodong Yin, Ai-Hua Chen, and Anxin Wu
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chemistry.chemical_classification ,Diketone ,Molecular Structure ,Double bond ,Organic Chemistry ,Thiophenes ,Ketones ,Methylation ,Chemical synthesis ,Mass Spectrometry ,Raney nickel ,chemistry.chemical_compound ,chemistry ,Cascade reaction ,Furan ,Thiophene ,Organic chemistry ,Pyrroles ,Sulfhydryl Compounds ,Furans ,Oxidation-Reduction ,Chromatography, High Pressure Liquid ,Pyrrole - Abstract
2-(methylthio)-1,4-diaryl-2-butene-1,4-dione (3) are prepared from readily available aryl methyl ketones in the presence of copper(II) oxide, iodine, and dimethyl sulfoxide. The success of the cross-coupling reaction of 4-chloroacetophenone with 2-acetylthiophene confirms a proposed self-sorting tandem reaction mechanism. Both Z- and E-isomers of compound 3 are readily converted into the corresponding 3-methylthio 2,5-diaryl furan 7 in good yield through a domino process involving the reduction of the double bond followed by the Paal-Knorr furan synthesis. Meanwhile, 4-bromo-3-methylthio 2,5-diaryl furan 10 is obtained either by the treatment of furan 7 with molecular bromine or by the treatment of diketone 3 with 30% hydrogen bromide in acetic acid solution in one pot. Removal of the methylthio group is accomplished by the treatment of 7 with Raney Ni in ethanol, which affords the diaryl-substituted furan 11 in excellent isolated yield. Selective reduction of the double bond of compound 3 leads to the formation of the saturated 1,4-diketone 13, which is easily converted to the corresponding 3-methylthio-2,5-diaryl-substituted pyrrole 14 and thiophene 15 via the Paal-Knorr cyclization reaction.
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- 2008
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25. Application of irrigation and negative pressure wound therapy (INPWT) to treat diabetic foot gangrene: a case report.
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Ai-hua Chen, Huiling Liu, Chunmei Zhang, and Ping Zou
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INFECTION prevention ,DIABETIC foot prevention ,BLOOD pressure ,BLOOD sugar ,DEBRIDEMENT ,GANGRENE ,INFECTION ,IRRIGATION (Medicine) ,MICROCIRCULATION ,NUTRITION ,SURGICAL dressings ,WOUND healing ,WOUND care ,DIABETIC foot ,NEGATIVE-pressure wound therapy - Abstract
This case study summarises the treatment of a patient with diabetic foot gangrene. By undergoing irrigation and negative pressure wound therapy (INPWT) with moist dressing, foot amputation was avoided. The treatment process included: the comprehensive assessment of systemic and local condition; choosing suitable debridement such as sharp surgical debridement; preventing the spread of infection; applying INPWT to reduce endotoxin absorption; and active treatments of primary disease such as controlling blood sugar and blood pressure, and improving microcirculation and nutrition. After 2 months of vigorous INPWT, the patient's wound bed improved. After the application of a moist dressing, the wound closed and healed successfully at 3 months. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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26. Effects of enterostomal therapists training: Evaluated with Kirkpatrick's model.
- Author
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Shenlv Ying, Hai-Hong Jiang, and Ai-hua Chen (Alice)
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BEHAVIOR modification ,ENTEROSTOMY nursing ,MEDICAL care ,NURSING ,NURSING students ,OSTOMATES ,SATISFACTION ,SCHOOL environment ,STUDENTS ,STUDENT attitudes ,TEACHER-student relationships ,EDUCATIONAL outcomes ,COLLEGE teacher attitudes ,EVALUATION of human services programs ,DESCRIPTIVE statistics - Abstract
Objective To evaluate the effect of training for enterostomal therapists (ETs) based on Kirkpatrick's Four Levels of Training Evaluation model. To understand ET trainees' work status after completing the Enterostomal Therapy Nursing Education Program (ETNEP) course as well as the ET students' satisfaction of teachers and studying conditions when completing the Wenzhou ETNEP. Methods One hundred and sixty-nine students who had completed the Wenzhou ETNEP were evaluated by Kirkpatrick's Four Levels of Training Evaluation model from four perspectives, namely the Reaction, Learning, Behaviour and Result levels. Results The overall satisfaction of the Wenzhou ETNEP was high in the Reaction level. In the Reaction Level the average matrix score of training programs and teachers was: >1.4. In the Behavioural level, 103 ETs participated in stoma and wound clinics, with 99.2% of them actively promoting ET nursing knowledge and 18 ETs (13.2%) serving as teachers of ETNEP schools. One hundred and sixteen ETs (85.3%) conducted ET-related nursing courses for other nursing staff and 58.8% of ETs had conducted continued education courses. Of the ETs, 22.8% participated in the hospital's outpatient or outreach stoma and wound care services. In the Result level, 58.8% of ETs participated in nursing research of the specialty, 29.4% of ETs had obtained scientific research funds and 136 ETs had published papers. Conclusion Students are satisfied with the ETNEP training they received. Their ability to work and function as ETs has improved on completion of their training. In addition, their professional standing has improved, with all ETNEP participants having achieved good results in the fields of specialised nursing, extended nursing, scientific research and teaching. However, in reviewing the survey results and aligning these with current standards of practice and employment of ETs in China, there is the need to modify parts of the ETNEP (such as raising the degree of ET students' entry criteria), standardise teaching materials and establish communication processes with mechanisms for exchanging ET teachers nationally and internationally, to ensure the quality of teaching and improve the quality of specialised ET nursing. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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27. Application of wound bed preparation theory in the management of a severe extravasation injury in a neonate: A case study.
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Ai-hua Chen (Alice), Junying Lv, PingLu, and ChunMei zhang
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NEONATAL necrotizing enterocolitis ,DEBRIDEMENT ,WOUND healing ,TRAUMATOLOGY diagnosis ,WOUND care ,DISEASE management ,EXTRAVASATION ,PERIPHERALLY inserted central catheters ,ANTIMICROBIAL bandages ,CHILDREN ,THERAPEUTICS - Abstract
A common complication associated with pre-term infants in neonatal intensive care units are extravasation injuries (EI), which are a significant cause of iatrogenic morbidity and mortality. This case study describes the management of severe extravasation injuries in a premature infant. The theories and principles of wound bed preparation such as debridement of necrotic tissue, infection control through reduction of wound bioburden, moisture balance and promotion of epithelial migration were employed to facilitate wound healing. After two months of careful wound care, the wound healed completely. There was no functional or cosmetic impairment and no scar formation: an excellent result overall. [ABSTRACT FROM AUTHOR]
- Published
- 2018
28. Patient-Reported Treatment Satisfaction with Dabigatran versus Warfarin in Patients with Non-Valvular Atrial Fibrillation in China.
- Author
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Yan-Ping Geng, Di-Hui Lan, Nian Liu, Xin Du, Zheng, Danni, Ri-Bo Tang, De-Yong Long, Rong-Hui Yu, Cai-Hua Sang, Rong Bai, Chen-Xi Jiang, Song-Nan Li, Xue-Yuan Guo, Wei Wang, Shi-Jun Xia, San-Shuai Chang, Jian-Zeng Dong, Ai-Hua Chen, and Chang-Sheng Ma
- Published
- 2018
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29. Silicon-on-insulator asymmetric optical switch based on total internal reflection
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Cezhou Zhao, Ai Hua Chen, G.Z. Li, and E.K. Liu
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Total internal reflection ,Materials science ,Extinction ratio ,Silicon ,business.industry ,Silicon on insulator ,chemistry.chemical_element ,Waveguide (optics) ,Optical switch ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,Optics ,chemistry ,Dispersion (optics) ,Insertion loss ,Electrical and Electronic Engineering ,business - Abstract
Based on the large cross-section single-mode rib waveguide condition, total internal reflection (TIR) and the plasma dispersion effect, a silicon-on-insulator (SOI) asymmetric optical waveguide switch with transverse injection structure has been proposed and fabricated, in which the SOI technique utilizes silicon and silicon dioxide thermal bonding and back-polishing. The device performance is measured at a wavelength of 1.3 /spl mu/m. It shows that the extinction ratio and insertion loss are less than -18.1 and 6.3 dB, respectively, at an injection current of 60 mA. Response time is 110 ns.
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- 1997
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30. Rational Solutions and Lump Solutions of the Potential YTSF Equation.
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Hong-Qian Sun and Ai-Hua Chen
- Subjects
BILINEAR forms ,SOLITONS ,PARTIAL differential equations ,ROGUE waves ,LINEAR equations - Abstract
By using of the bilinear form, rational solutions and lump solutions of the potential Yu-Toda-Sasa- Fukuyama (YTSF) equation are derived. Dynamics of the fundamental lump solution, n1-order lump solutions, and N-lump solutions are studied for some special cases. We also find some interaction behaviours of solitary waves and one lump of rational solutions. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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31. Case study of a pressure injury treated by traditional Chinese medicine.
- Author
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Wen-xian Zheng, Ai-hua Chen, and Zhi-peng Wu
- Subjects
BEDSORES treatment ,PRESSURE ulcers ,DEBRIDEMENT ,CHINESE medicine ,PARALYSIS ,SESAME oil ,DISEASE complications - Abstract
Our team introduces a case of a huge pressure injury in the sacrococcygeal region with systemic infection, which was successfully cured by Chinese medicine for half a year after debridement. The method is economical and effective. [ABSTRACT FROM AUTHOR]
- Published
- 2017
32. N-fold Darboux transformations and soliton solutions of three nonlinear equations
- Author
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Ai-Hua Chen and Fan-Fan Wang
- Subjects
Physics ,Integrable system ,Mathematical analysis ,Mathematics::Analysis of PDEs ,Statistical and Nonlinear Physics ,sine-Gordon equation ,Integral transform ,Dispersionless equation ,Nonlinear system ,Nonlinear Sciences::Exactly Solvable and Integrable Systems ,Ordinary differential equation ,Soliton ,Korteweg–de Vries equation ,Nonlinear Sciences::Pattern Formation and Solitons ,Mathematical Physics ,Mathematical physics - Abstract
In this paper, by constructing N-fold Darboux transformations, we obtain new solutions of the generalized coupled modified Korteweg-de Vries (GC-mKdV) equation, the mKdV equation and the coupled integrable dispersionless equation. Particularly, we get single and two-kink solutions, single and two-hyperbolic soliton solutions, single and two-parabola soliton solutions, respectively.
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- 2012
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33. Phase and Optical Characterizations of Annealed SnO Thin Films and Their p-Type TFT Application
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Hongtao Cao, Lingyan Liang, Zheng Yu, Zhimin Liu, Ai Hua Chen, Yan Qun Fang, Yuan Yuan Shi, Hai Zhong Zhang, and Xi Lian Sun
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Materials science ,Renewable Energy, Sustainability and the Environment ,Band gap ,Analytical chemistry ,Condensed Matter Physics ,Electron beam physical vapor deposition ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Amorphous solid ,law.invention ,Thin-film transistor ,law ,Materials Chemistry ,Electrochemistry ,Litharge ,Crystallite ,Thin film ,Crystallization - Abstract
Amorphous SnO thin films were prepared on quartz and 190 nm SiO2/Si(001) substrates by electron beam evaporation. X-ray diffraction results reveal that amorphous SnO transforms into polycrystalline alpha-SnO (tetragonal litharge structure) after rapid thermal annealing in Ar ambient at 350-400 degrees C and starts decomposing into o-SnO2 (orthorhombic structure) with the expulsion of Sn atoms at 450-500 degrees C. The optical properties were characterized via spectroscopic ellipsometry. The polycrystalline SnO thin films have a higher refractive index n and a narrower bandgap E-g than the amorphous ones, which is due to the polarizability enhancement in the crystallization process. Moreover, the relationship between n and Eg of the amorphous and polycrystalline SnO thin films can be explained by the "Moss rule" law, and a decreasing trend in n was verified with the transformation from SnO to SnO2. Bottom-gate-type thin film transistors (TFTs) employing polycrystalline SnO channels on the SiO2/Si(001) substrates exhibit p-type field-effect transistor characteristics. The optimum field-effect mobilities mu(sat) and mu(lin) are 0.46 and 0.87 cm(2) V-1 s(-1), respectively, which are the same order of magnitude as those reported for epitaxial SnO TFTs. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3385390] All rights reserved.
- Published
- 2010
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34. (2Z)-2-Methylsulfanyl-1,4-di-2-thienylbut-2-ene-1,4-dione
- Author
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Ai-Hua Chen and Jun Wu
- Subjects
Bond length ,Crystallography ,Chemistry ,Hydrogen bond ,Torsion (mechanics) ,Molecule ,General Materials Science ,General Chemistry ,Condensed Matter Physics - Abstract
The asymmetric unit of the title compound, C13H10O2S3, contains two independent molecules, which exhibit different conformations [C=C(SMe)—C(O)—C torsion angles of 81.4 (3) and 80.2 (2)°], normal bond lengths and angles, and short intramolecular S⋯O distances [2.768 (3) A in both molecules]. The crystal packing exhibits weak intermolecular C—H⋯O hydrogen bonds.
- Published
- 2007
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35. Mean shift tracking combining SIFT.
- Author
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Ai-hua Chen, Ming Zhu, Yan-hua Wang, and Chen Xue
- Published
- 2008
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36. A Discriminative Feature-Based Mean-shift Algorithm for Object Tracking.
- Author
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Chen Xue, Ming Zhu, and Ai-hua Chen
- Published
- 2008
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37. Adaptive Coding in Retinal Ganglion Cells.
- Author
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Xin Jin, Hai-Qing Gong, Pei-Ji Liang, and Ai-Hua Chen
- Published
- 2005
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38. Phase and Optical Characterizations of Annealed SnO Thin Films and Their p-Type TFT Application.
- Author
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Ling Yan Liang, Zhi Mm Liu, Hong Tao Cao, Zheng Yu, Yuan Yuan Shi, Ai Hua Chen, Hai Zhong Zhang, Yan Qun Fang, and Xi Lian Sun
- Subjects
TIN ,OXYGEN ,THIN films ,THIN film transistors ,X-ray diffraction ,POLYCRYSTALS ,ELECTRON beams ,ULTRAHIGH vacuum - Abstract
Amorphous SnO thin films were prepared on quartz and 190 nm SiO
2 /Si(00l) substrates by electron b'eam evaporation. X-ray diffraction results reveal that amorphous SnO transforms into polycrystalline a-SnO (tetragonal litharge structure) after rapid thermal annealing in Ar ambient at 350-400°C and starts decomposing into o-SnO2 (orthorhombic structure) with the expulsion of Sn atoms at 450-500°C. The optical properties were characterized via spectroscopic ellipsometry. The polycrystalline SnO thin films have a higher refractive index n and a narrower bandgap E5 than the amorphous ones, which is due to the polarizability enhancement in the crystallization process. Moreover, the relationship between n and Eg of the amorphous and polycrystalline SnO thin films can be explained by the "Moss rule" law, and a decreasing trend in n was verified with the transformation from SnO to SnO2 . Bottom-gate-type thin film transistors (TEl's) employing polycrystalline SnO channels on the 5i02/Si(00l) substrates exhibit p-type field-effect transistor characteristics. The optimum field-effect mobilities μsat and μlin are 0.46 and 0.87 cm2 V-1 S-1 respectively, which are the same order of magnitude as those reported for epitaxial SnO TEl's. [ABSTRACT FROM AUTHOR]- Published
- 2010
- Full Text
- View/download PDF
39. A Robust Method for Spike Sorting with Automatic Overlap Decomposition.
- Author
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Guanf-Li Wang, Yi Zhou, Ai-Hua Chen, Pu-Ming Zhang, and Pei-Ji Liang
- Subjects
NERVOUS system ,INFORMATION processing ,FOURIER transforms ,NEURONS ,ELECTRODES - Abstract
Spike sorting is the mandatory first step in analyzing multiunit recording signals for studying information processing mechanisms within the nervous system. Extracellular recordings usually contain overlapped spikes produced by a number of neurons adjacent to the electrode, together with unknown background noise, which in turn induce some difficulties in neural signal identification. In this paper, we propose a robust method to deal with these problems, which employs an automatic overlap decomposition technique based on the relaxation algorithm that requires simple fast Fourier transforms. The performance of the presented system was tested at various signal-to-noise ratio levels based on synthetic data that were generated from real recordings. [ABSTRACT FROM AUTHOR]
- Published
- 2006
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40. Luminance adaptation increased the contrast sensitivity of retinal ganglion cells.
- Author
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Ai-Hua Chen, Yi Zhou, Hai-Qing Gong, and Pei-Ji Liang
- Published
- 2005
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41. Silicon-on-insulator asymmetric optical switch based on total internal reflection.
- Author
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Ce Zhou Zhao, Ai Hua Chen, Liu, E.K., and Li, G.Z.
- Published
- 1997
- Full Text
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42. Fissionable wave solutions, lump solutions and interactional solutions for the (2 + 1)-dimensional Sawada–Kotera equation.
- Author
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Ai-Hua Chen and Fan-Fan Wang
- Published
- 2019
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43. Exact solutions of the Kudryashov–Sinelshchikov equation in ideal liquid with gas bubbles.
- Author
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Ai-Juan Zhou and Ai-Hua Chen
- Published
- 2018
- Full Text
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44. Explicit solutions of Boussinesq–Burgers equation.
- Author
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Zheng-Yan, Wang and Ai-Hua, Chen
- Abstract
Darboux transformation with multi-parameters for the Boussinesq–Burgers (B–B) equation is derived. For an application, some important explicit solutions of the B–B equation are obtained, including 2N-soliton solution and periodic solution. Finally, some elegant and interesting figures are plotted. [ABSTRACT FROM AUTHOR]
- Published
- 2007
- Full Text
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45. Risk factors for perioperative allogeneic blood transfusion in adolescent scoliosis posterior correction surgery
- Author
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MA Man-jiao, MA Lu-lu, ZHANG Xiu-hua, ZHANG Jian-guo, SHEN Jian-xiong, ZHANG Ai-hua, CHEN Lin, LIU Chang-cheng
- Subjects
adolescent ,scoliosis ,posterior correction surgery ,allogeneic red blood cell(rbc) transfusion ,Medicine - Abstract
Objective To investigate the perioperative rate of allogeneic red blood cell (RBC) transfusion in adolescent scoliosis(AS) that underwent posterior correction surgeries, and to identify its risk factors. Methods This study was a retrospective cohort study. Anesthetic data of adolescent scoliosis patients who underwent posterior correction surgeries from January 2015 to May 2017 in Peking Union Medical College Hospital were collected and analyzed. The clinical variables were subsequently compared between patients who received allogeneic RBC transfusion(transfusion group) and those who did not (non-transfusion group). Binary logistic regression analysis was performed to identify risk factors in perioperative allogeneic RBC transfusion in these patients. Results The study enrolled 469 patients. The perioperative rate of allogeneic RBC transfusion was 30.5% and the independent risk factors leading to it included corrected body mass index (BMI) (OR=0.887, 95% CI: 0.815-0.966, P<0.01),other type of scoliosis (OR=3.847, 95% CI: 1.660-8.917, P<0.01) (compared with idiopathic scoliosis), preoperative anemia (OR=6.322, 95% CI: 2.053-19.473, P<0.01), the number of fused levels more than 12.5 (OR=3.554, 95% CI: 2.174-5.885, P<0.001), preoperative Cobb angle larger than 64.5° (OR=2.381, 95% CI: 1.356-4.178, P<0.01) and osteotomy (OR=7.551, 95% CI: 3.258-17.503,P<0.001). The postoperative transfer rate to intensive care unit(ICU)(P<0.001) in transfusion group was higher, with longer hospital stay length(P<0.001) and higher cost(P<0.001), than that in the non-transfusion group. Conclusions The risk factors for perioperative allogeneic RBC transfusion in AS include corrected BMI, other type of scoliosis, preoperative anemia, the number of fused levels more than 12.5, preoperative Cobb angle larger than 64.5° and osteotomy.
- Published
- 2022
- Full Text
- View/download PDF
46. Double-Injection Bifurcation Optical Active Switch Integrated on Silicon-on-Insulator for 1.3 μm Operation.
- Author
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Ce-zhou, Zhao, Ai-hua, Chen, En-ke, Liu, and Guo-zheng, Li
- Published
- 1997
- Full Text
- View/download PDF
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