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Virtual boundary element-equivalent collocation method for the plane magnetoelectroelastic solids
Yao, Wei-An,Li, Xiao-Chuan,Yu, Gui-Rong Techno-Press 2006 Structural Engineering and Mechanics, An Int'l Jou Vol.22 No.1
This paper presents a virtual boundary element-equivalent collocation method (VBEM) for the plane magnetoelectroelastic solids, which is based on the fundamental solutions of the plane magnetoelectroelastic solids and the basic idea of the virtual boundary element method for elasticity. Besides all the advantages of the conventional boundary element method (BEM) over domain discretization methods, this method avoids the computation of singular integral on the boundary by introducing the virtual boundary. In the end, several numerical examples are performed to demonstrate the performance of this method, and the results show that they agree well with the exact solutions. So the method is one of the efficient numerical methods used to analyze megnatoelectroelastic solids.
Fabrication and Study of Novel Piezoresistive Polymer Composites Sensor for 3D Printing Applications
( Yu-yen Chen ),( Cheng-chun Huang ),( Ching-yuan Su ),( Yao-chuan Tsai ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1
With the technology development, the technique of 3D printing has gradually matured. The characteristic of 3D printing is that it can print the product directly without another complex process. If the 3D printing could be applied to manufacturing sensor elements, it could be quicker and cheaper for the sensor element fabrication and the sensor forms will be applicable. Piezoresistive effect is a common sensor sensing principle which is through the deformation of the material to cause the resistance changes. In this study, a piezoresistive polymer composites material was developed, which can be manufactured by the photo-curable 3D printing. The different amount of the conductive carbon black (CB) nanoparticles was employed and added into photo-curable resin for obtaining the conductive percolation threshold of the polymer composites and measuring the piezoresistivity of the polymer composites. The conductive percolation threshold is around 1.0~1.5wt%, and the gauge factor of 1.5wt% is 9~17. The gauge factor was found which would decrease with the increasing strains. This study can be applied on fabricating the piezoresistive pressure and tactile sensors which can be used to the agricultural, industrial and various industries.
Jia, Yao,Hu, Ting,Hang, Chuan-Ying,Yang, Ru,Li, Xiong,Chen, Zhi-Lan,Mei, Ye-Dong,Zhang, Qing-Hua,Huang, Ke-Cheng,Xiang, Qun-Ying,Pan, Xiu-Yu,Yan, Yu-Ting,Wang, Xiao-Li,Wang, Shao-Shuai,Hang, Zhou,Tang Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.10
Purpose: To investigate the diet of patients with cervical cancer and precancerosis in the Wufeng area, a high-incidence region in China. Methods: In the case group, 104 patients diagnosed with cervical cancer or cervical intraepithelial neoplasias (CINII/III) were recruited from the Wufeng area. Nine hundred thirty-six healthy women were selected from the same area as the matched controls. A questionnaire, which included questions about general lifestyle conditions, smoking and alcohol status, source of drinking water, green tea intake, and diet in the past year, was presented to all participants. Results: Green tea intake (P=0.022, OR=0.551, 95% CI=0.330-0.919) and vegetable intake (P=0.035, OR=0.896, 95% CI=0.809-0.993) were identified as protective factors against cervical cancer or CINII/III. There was no indication of any associations of other lifestyle factors (smoking status, alcohol status, source of drinking water) or diet (intake of fruit, meat/egg/milk, soybean food, onion/garlic, staple food and pickled food) with cervical cancer. Conclusions: The results suggest that eating more fresh vegetables and drinking more green tea may help to reduce the risk of cervical cancer or CINII/III in people of the Wufeng area.
Virtual boundary element−equivalent collocation method for the plane magnetoelectroelastic solids
Wei-An Yao,Xiao-Chuan Li,Gui-Rong Yu 국제구조공학회 2006 Structural Engineering and Mechanics, An Int'l Jou Vol.22 No.1
This paper presents a virtual boundary element-equivalent collocation method (VBEM) for the plane magnetoelectroelastic solids, which is based on the fundamental solutions of the plane magnetoelectroelastic solids and the basic idea of the virtual boundary element method for elasticity. Besides all the advantages of the conventional boundary element method (BEM) over domain discretization methods, this method avoids the computation of singular integral on the boundary by introducing the virtual boundary. In the end, several numerical examples are performed to demonstrate the performance of this method, and the results show that they agree well with the exact solutions. So the method is one of the efficient numerical methods used to analyze megnatoelectroelastic solids.
Gao, Ying,Huang, Yu-Bei,Liu, Xue-Ou,Chen, Chuan,Dai, Hong-Ji,Song, Feng-Ju,Wang, Jing,Chen, Ke-Xin,Wang, Yao-Gang Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.12
Objective: To evaluate associations between tea consumption, alcohol drinking and physical activity and breast cancer risk among Chinese females. Methods: Three English databases (PubMed, ScienceDirect and Wiley) and three Chinese databases (CNKI, WanFang and VIP) were independently searched by 2 reviewers up to December 2012, complemented by manual searches. The quality of included studies was assessed with the Newcastle-Ottawa Scale items. Random-effects models were used to estimate the pooled odds ratios (ORs) and 95% confidence intervals (CIs). Potential publication bias was estimated through Egger's and Begg's tests. Heterogeneity between studies was evaluated with $I^2$ statistics. Results: Thirty-nine studies involving 13,204 breast cancer cases and 87,248 controls were identified. Compared with non-drinkers, regular tea drinkers had decreased risk (OR=0.79, 95%CIs: 0.65-0.95; $I^2$=84.9%; N=16). An inverse association was also found between regular physical activity and breast cancer risk (OR=0.73, 95%CIs: 0.63-0.85; $I^2$=77.3%; N=15). However, there was no significant association between alcohol drinking and breast cancer risk (OR=0.85, 95%CIs: 0.72-1.02; $I^2$=63.8%; N=26). Most of the results from the subgroup analysis were consistent with the main results. Conclusion: Tea consumption and physical activity are significantly associated with a decreased risk of breast cancer in Chinese females. However, alcohol drinking may not be associated with any elevation of risk.
Wang Li-Kai,Lin Yao-Tsung,Chen Jui-Tai,Lan Winnie,Hung Kuo-Chuan,Chen Jen-Yin,Liu Kuei-Jung,Yen Yu-Chun,Chou Yun-Yun,Cherng Yih-Giun,Tam Ka-Wai 대한마취통증의학회 2023 Korean Journal of Anesthesiology Vol.76 No.4
Background: Shared decision making using patient decision aids (PtDAs) was established over a decade ago, but few studies have evaluated its efficacy in Asian countries. We therefore evaluated the application of PtDAs in a decision conflict between two muscle relaxant reversal agents, neostigmine and sugammadex, and sequentially analyzed the regional differences and operating room turnover rates.Methods: This multicenter, outcome-assessor-blind, randomized controlled trial included 3,132 surgical patients from two medical centers admitted between March 2020 and August 2020. The patients were randomly divided into the classical and PtDA groups for pre-anesthesia consultations. Their clinicodemographic characteristics were analyzed to identify variables influencing the choice of reversal agent. On the day of the pre-anesthesia consultation, the patients completed the four SURE scale (sure of myself, understand information, risk-benefit ratio, encouragement) screening items. The operating turnover rates were also evaluated using anesthesia records. Results: Compared with the classical group, the PtDA group felt more confident about receiving sufficient medical information (P < 0.001), felt better informed about the advantages and disadvantages of the medications (P < 0.001), exhibited a superior understanding of the benefits and risks of their options (P < 0.001), and felt surer about their choice (P < 0.001). Moreover, the PtDA group had a significantly greater tendency to choose sugammadex over neostigmine (P < 0.001). Conclusions: PtDA interventions in pre-anesthesia consultations provided surgical patients with clear knowledge and better support. PtDAs should be made available in other medical fields to enhance shared clinical decision-making.
Liu, Xue-Ou,Huang, Yu-Bei,Gao, Ying,Chen, Chuan,Yan, Ye,Dai, Hong-Ji,Song, Feng-Ju,Wang, Yao-Gang,Wang, Pei-Shan,Chen, Ke-Xin Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.3
Background: Evidence for associations between dietary factors and breast cancer risk is inconclusive among Chinese females. To evaluate this question, we conducted a systematic review of relevant case-control and cohort studies. Methods: Studies were systematically searched among 5 English databases (PudMed, ScienceDirect, Wiley, Clinicaltrials.gov, and Cochrane) and 3 Chinese databases (CNKI, WanFang, and VIP) until November 2012. Random effects models were used to estimate summary odds ratios (ORs) and the corresponding 95% confidence intervals (CIs). Results: Thirty one case-control studies and two cohort studies involving 9,299 cases and 11,413 controls were included. Consumption of both soy and fruit was significantly associated with decreased risk of breast cancer, with summary ORs of 0.65 (95% CIs: 0.43-0.99; I2=88.9%, P<0.001; N=13) and 0.66 (95% CIs: 0.47-0.91; $I^2$=76.7%, P<0.001; N=7), respectively. Consumption of fat was significantly associated with increased risk of breast cancer (OR=1.36; 95% CIs: 1.13-1.63; $I^2$=47.9%, P=0.088; N=6). There was nonsignificant association between consumption of vegetables and breast cancer risk (OR=0.72; 95% CIs: 0.51-1.02; $I^2$= 74.4%, P<0.001; N=9). However, sensitivity analysis based on adjusted ORs showed decreased risk of breast cancer was also associated with consumption of vegetables (OR=0.49; 95% CIs: 0.30-0.67). Conclusion: Both soy food and fruit are significantly associated with decreased risk of breast cancer among Chinese females, and vegetables also seems to be protective while dietary fatexerts a promoting influence.
Study on the Structure of Sputter Metallic Glass Thin Film to Micro-Mirror
( Zhao-ying Wang ),( Yu-yen Chen ),( Yao-chuan Tsai ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1
This study used sputter to deposit iron-based metallic glass thin films on micro-mirror surfaces, and then magnets are placed on both sides of the micro-mirror to polarize the Fe-based thin film, then input AC current to the coil which will produce a magnetic field, and the magnetic field will make the micro-mirror rotation. There are two different torsion bar sizes designed, which are the samples A length: 300 μm, width: 20 μm, thickness: 10 μm and the sample B length: 500 μm, width: 50 μm, thickness: 10 μm. And the resonant frequency of these two samples simulated by ANSYS was 601 Hz and 827 Hz. The measurement of the resonance frequency, we inputted AC 4V <sub>PP</sub> to coil made the micro-mirror rotation and used the laser light irradiating on the micro-mirror. From this we can know the actual resonance frequency of micro-mirror of sample A and sample B are 554Hz, 496Hz and maximum rotation angles were 77 degrees and 30 degrees, respectively.