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Aiming at the requirement of the efficient move on the ground and safe stairs- climbing for some physical disabled or aged people,a new wheel- track hybrid electric powered wheelchair（ EPW） is designed. The technology solution of the wheel- track hybrid EPW is proposed and its mechanical structure and control system are designed. The process of climbing up and down the stairs in the track mobile mode is analyzed and diagrammatized. The prototype of this wheel- track hybrid EPW is manufactured and the experiments of climbing up and down the stairs are implemented. The experimental results show that the designed wheel-track hybrid EPW can realize the function of both moving on the ground efficiently and climbing up and down the stairs safely.

Byline: Yongxiu He, Weijun Tao, Songlei Zhang, Weihong Yang, Furong Li Logarithmic Mean Divisia Index I (LMDI I) method is used to decompose China's Aggregate Electricity Intensity (CAEI) into structure effect and intensity effect at the 29-sub-sector level. The decomposition result shows that the intensity effect played a major role on the decline of CAEI during 1995-1999. Both structure effect and intensity effect account for the increase of CAEI since 2000. Structure effect and intensity effect account for 55.2% and 44.8%, respectively, of CAEI decrease during 1995-1999. The intensity effect contributed to the decline of CAEI during 1999-2007. However, the structure effect actually increased CAEI.

Background: The association between insulin resistance and cardiovascular diseases (CVD) is of significant interest. However, there is limited published research on the relationship between CVD and the triglyceride glucose-body mass index (TyG-BMI). This study aims to examine the association between TyG-BMI and CVD in US adults., Method: We analyzed data from 11016 adults collected through the 2011-2020 NHANES. Employing weighted generalized linear models, subgroup analysis, sensitivity analysis, and receiver operating characteristic curves, we examined the association between the TyG-BMI index and CVD. Nonlinear associations were investigated using restricted cubic splines., Results: Higher TyG-BMI values were significantly associated with an increased prevalence of CVD (P<0.001). Weighted generalized linear models consistently demonstrated a positive association across all models. Specifically, individuals in the highest tertile of TyG-BMI had a 38% higher CVD prevalence than those in the lowest quartile (OR=1.380; 95% CI=1.080, 1.763). Unweighted logistic regression models further confirmed these findings. Sex, race, education, family income to poverty ratio, smoking, hypertension, and diabetes did not modify this positive association (P for interaction >0.05). Incorporating the TyG-BMI index into traditional risk factor models marginally improved the prediction of CVD prevalence (P for comparison <0.05)., Conclusions: The TyG-BMI index, an indicator of insulin resistance, is significantly positive associated with a higher prevalence of CVD. These findings underscore the importance of managing insulin resistance to prevent CVD and highlight the need for further research into the underlying mechanisms of this association., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Wang, Cheng and Tao.)

Background: Oxidative stress is a known pathogenic mechanism in cardiovascular disease (CVD), yet the association between dietary antioxidants and CVD in the general population remains underexplored. This study leverages data from the National Health and Nutrition Examination Survey (NHANES) to investigate the association of a composite dietary antioxidant index with CVD in US adults., Methods: Analyzing data from 25,997 adults (2011-2020 NHANES), we employed weighted generalized linear models, subgroup analysis, threshold effect analyses, and sensitivity analysis to assess the association between dietary antioxidants and CVD. Nonlinear associations were explored through a restricted cubic spline, with gender-specific stratification and threshold effect analysis to identify critical inflection points., Results: Increasing levels of the composite dietary antioxidant index corresponded with decreased CVD prevalence ( P  < 0.001). In all models, weighted generalized linear models revealed a consistent negative association between CVD prevalence. And in Model 3, Quartile 4 had a 29% lower CVD prevalence than Quartile 1[0.71 (0.59, 0.85), P  < 0.001]. Meanwhile, the findings of the unweighted logistic regression model demonstrated stability. Various characteristics such as sex, age, race, PIR, education, BMI, alcohol consumption, hypertension, hyperlipidemia, and diabetes did not influence this inverse association ( P for interaction >0.05). Notably a nonlinear association was observed, with a significant inflection point at 3.05 among women., Conclusion: This study demonstrates a strong negative association between the composite dietary antioxidant index and CVD prevalence, suggesting the potential protective role of dietary antioxidants. These findings underscore the need for prospective studies to further understand the impact of oxidative stress on cardiovascular health., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (© 2024 Wang, Tao and Cheng.)