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| 1 | Physical Pro- perties of 1-Butyl-3-Methylimidazolium Tetrafluoroborate/N- Methyl-2-Pyrrolidone Mixtures and the Solubility of CO2 in the System at Elevated Pressures 显示文摘 | Tian Shidong Hou Yucui Wu Weize | 2012 | J Chem Eng Data2012，57，3： | 1 |
| 2 | Control of the morphology of electrodeposited three-dimensional copper foam by tuning the pressure显示文摘Three-dimensional(3D) copper foams have been formed by electrodeposition at different nitrogen pressures and examined by scanning electron microscopy.The results indicate that an increase in system pressure leads to a decrease of the pore size of the copper foam due to the suppressed coalescence of hydrogen bubbles,while the thickness of the copper foam increases with decreasing pressure.Also,the walls around the pores on the copper foam consist of copper dendrites,and the copper dendrites are made up of copper grains with sizes less than 1 μm.The average sizes of the copper grains decrease with increasing system pressure.It has been demonstrated that copper foams with controllable 3D structure formed by electrodeposition at different pressures are comparable to those obtained by electrodeposition at normal pressure in the presence of specific additives. | PANG Kun HOU YuCui WU WeiZe TIAN ShiDong SUN NanNan | 2012 | Science China Chemistry2012，55，7： | 0 |
| 3 | Behavior recognition and fuel consumption prediction of tractor sowing operations using smartphone显示文摘In order to qualitatively recognize the behaviors and investigate the relationship between fuel consumption and machinery driving modes of the tractor in a low-cost approach,this study proposed a method for behavior recognition and fuel consumption prediction of tractor sowing operations using a smartphone.First,three driving modes were developed for maize sowing scenarios:manual driving assisted driving and unmanned driving.While sowing,smartphone software and CAN(Controller Area Network)storage devices collected both positional data and engine operating conditions.Second,the tractor trajectory points were divided into kinematic sequences,with six driving cycle indicators built in each series based on the time window.Based on the semantic information of the kinematic sequences,the three operations of sowing,seeds filling,and turning round were well recognized.Last,a model for maize sowing fuel consumption forecast was advanced using the principal component analyses and random forest algorithm,regarding three factors:driving cycles,operating behaviors,and driving patterns.When compared to the traditional K-means algorithm,the results demonstrated that the harmonic mean of the precision and recall(F1 score)of sowing behavior recognition,seeds filling behavior recognition,and turning behavior recognition were enhanced by 2.06%,8.99%,and 21.79%,respectively.In terms of the impacts of driving modes and operating behaviors on fuel consumption,assisted driving mode had the lowest fuel usage for both sowing and turning behavior.Therefore,assisted driving is the most fuel-efficient mode for maize sowing.Combining the three driving modes,the relative error of the fuel consumption prediction model was 0.11 L/h,with the manual driving mode having the lowest relative error at 0.09 L/h.This research method lays the foundation for the optimization of tractor operation behavior,the selection of tractor driving mode,and the fine management of tractor fuel consumption. | Lili Yang Weize Tian Weixin Zhai Xinxin Wang Zhibo Chen Long Wen Yuanyuan Xu Caicong Wu | 2022 | International Journal of Agricultural and Biological Engineering2022，15，4： | 0 |
| 4 | CT quantification of ventricular volumetric parameters based on semiautomatic 3D threshold-based segmentation in porcine heart and children with tetralogy of Fallot:accuracy and feasibility显示文摘background To investigate the accuracy and feasibility of CT in quantification of ventricular volume based on semiautomatic three-dimensional(3D)threshold-based segmentation in porcine heart and children with tetralogy of Fallot(TOF).Methods Eight porcine hearts were used in the study.The atria were resected and both ventricles of the eight porcine hearts were filled with solidifiable silica gel and performed CT scanning.The water displacement volume of silica gel casting mould was referred as gold standard of ventricular volume.Results of left and right ventricular volumes measured by CT were compared with reference standard.Twenty-three children diagnosed with TOF were retrospectively included.The ventricular volumetric parameters were assessed by cardiac CT before and 6 months after surgery.results Left ventricular and right ventricular volumes of porcine hearts measured by CT were highly correlated to casting mould(r=0.845,p=0.008;r=0.933,p=0.001),and there were no statistically significant differences(t=−1.059,p=0.325;t=−1.121,p=0.299).In children with TOF,right ventricular end-systole volumes 6 months after operation were higher than that before surgery,21.93±4.44 vs 19.80±4.52 mL/m^(2),p=0.001.Right ventricular ejection fractions 6 months after surgery were lower compared with that before surgery 59.79%±4.26%vs 63.05%±5.04%,p=0.000.Conclusions CT is able to accurately assess ventricular volumetric parameters based on semiautomatic 3D threshold-based segmentation.Both of the right and left ventricular volumetric parameters could be evaluated by CT in children with TOF. | Jiajun Xu Yangfan Tian Jinhua Wang Weize Xu Zhuo Shi Jianzhong Fu Qiang Shu | 2019 | World Journal of Pediatric Surgery2019，2，3： | 0 |
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