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| 1 | Upper-bound and finite element analyses of multi-row sprocket during cold semi-precision forging process显示文摘 | Wangjun Cheng Chengzhong Chi Yongzhen Wang Peng Lin Wei Liang | 2015 | International Journal of Coal Science & Technology2015，2，3： | 4 |
| 2 | Volume calculation of the spur gear billet for cold precision forging with average circle method显示文摘Forging spur gears are widely used in the driving system of mining machinery and equipment due to their higher strength and dimensional accuracy.For the purpose of precisely calculating the volume of cylindrical spur gear billet in cold precision forging,a new theoretical method named average circle method was put forward.With this method,a series of gear billet volumes were calculated.Comparing with the accurate three-dimensional modeling method,the accuracy of average circle method by theoretical calculation was estimated and the maximum relative error of average circle method was less than 1.5%,which was in good agreement with the experimental results.Relative errors of the calculated and the experimental for obtaining the gear billet volumes with reference circle method are larger than those of the average circle method.It shows that average circle method possesses a higher calculation accuracy than reference circle method(traditional method),which should be worth popularizing widely in calculation of spur gear billet volume. | Wangjun Cheng Chengzhong Chi Yongzhen Wang Peng Lin Wei Liang Chen Li | 2014 | International Journal of Coal Science & Technology2014，1，4： | 4 |
| 3 | 3D FEM simulation of flow velocity field for a 5052 aluminum alloy multi-row sprocket in cold semi- precision forging process 显示文摘 | Cheng Wangjun Chi Chengzhong Wang Yongzhen | 2015 | Transactions of Nonfer- rous Metals Society of China2015，，25： | 1 |
| 4 | Thermodynamic analysis of carbon migration in W1-1.0C steel in plasma surface chromizing显示文摘W1-1.0C steel was chromized at 1173 K with double glow plasma surface alloying process, and the distribution of Fe, Cr,and C contents in the chromized layer was measured using glow discharge spectrum analysis (GDA). The behavior and mechanism ofcarbon migration during the formation of chromized layer were studied through thermodynamic analysis and calculation. The gradientof carbon chemical potential was regarded as the driving force of carbon migration. An equation was derived to describe the carboncontent varying with the chromium content within the carbon-rich region. The calculated results from the equation approximatedclosely to the experimental ones. | Chengzhong Chi Zhiyong He Yuan Gao Zhong Xu | 2006 | Journal of University of Science and Technology Beijing2006，13，2： | 0 |
| 5 | The Effects of Diabetes and Hypertension on the Severity of COVID-19- Yichang, Hubei Province, 2020显示文摘Summary What is already known on this topic?COVID-19 has become a serious public health issue.A higher proportion of severe patients were senior patients with underlying diseases such as diabetes and hypertension and had a lack of statistical evidence so far.What is added by this report?When severe illness was compared with non-severe illness,senior patients were at a greater risk(4.71)than young and middle-aged patients,as well as the odds ratio was about 2.99 patients with diabetes compared to patients without diabetes and hypertension.COVID-19-infectious senior patients with diabetes were inclined to suffer severe illness. | Yuchang Zhou Jiajuan Yang Chengzhong Xu Chi Hu Fangfang Lu Fuzhong Xue Pei Zhang | 2020 | China CDC weekly2020，2，43： | 0 |
| 6 | Economic Burden of Malignant Tumors——Yichang City,Hubei Province,China,2019显示文摘Summary What is already known about this topic?Malignant tumors are common chronic noncommunicable disease and have caused serious health hazards to residents and heavy economic burden of disease to the society.What is added by this report?This is the first report on the economic burden of multiple types of malignant tumors in Yichang City.In 2019,the direct medical burden of lung cancer in Yichang was the highest,reaching 561.67 million CNY,and the indirect economic burden of lung cancer in Yichang was higher than that of other malignant tumors,costing 326.49 million CNY. | Xiaojuan Long Fangfang Lu Xianglong Xiang Jiajuan Yang Chengzhong Xu Pei Zhang Shicheng Yu Qiqi Wang Chi Hu | 2022 | China CDC weekly2022，4，15： | 0 |
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