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| 1 | Development of mechatronic driving system for seed meters equipped on conventional precision corn planter显示文摘Precision planters are more and more widely used for planting corn in China.Seed meters of conventional precision corn planters are usually driven by ground wheel and chain and sprocket system at present.Because of the slippage of ground wheels and vibration of chains,planting accuracy cannot be ensured,especially at higher forward speed.To improve the planting performance of precision planters,a mechatronic driving system was designed and its field working performance was evaluated in this research.A two-row pneumatic precision planter was modified to allow simultaneously using two different driving systems,i.e,with one row unit equipped with the newly designed mechatronic driving system and the other row unit equipped with conventional mechanical driving system,and used for planting at three forward speeds(9,11 and 12 km/h)on no-tillage and rotary-tillage lands.The distances between adjacent seeds in each plot were measured and the indices of uniformity in seed spacing,quality of feeding index(QFI),missing-seeding index and precision index were analyzed.With the average 4.70%increase of QFI and 3.54%decrease of missing-seeding index,the mechatronic driving system performed better than the mechanical driving system both on no-tillage and rotary-tillage lands at each forward speed.The values of QFI,missing-seeding index and precision index of the mechatronic driving system on rotary-tillage land are comparable to those on no-tillage land,by contrast,these indices of the mechanical driving system on rotary-tillage land are significantly worse than those on no-tillage land.The result indicates that the mechatronic driving system can eliminate the effect of ground wheel slippage on planting quality and maintain the uniformity of seed distribution.Although the QFI,missing-seeding index and precision index become worse with the increase of forward speed,with the worst values of QFI of 89.93%,missing-seeding index of 5.08%and precision index of 18.92%at the highest forward speed of 12 km/h,the mechatronic driving system can reduce the effect of forward speed on planting accuracy effectively.The result indicates that planters equipped with the mechatronic driving system are suitable for high speed planting.As compared to the mechanical driving system,the advantage of the mechatronic driving system is more noticeable especially when the forward speed is more than 11 km/h. | Yang Li He Xiantao Cui Tao Zhang Dongxing Shi Song Zhang Rui Wang Mantao | 2015 | International Journal of Agricultural and Biological Engineering2015，8，4： | 22 |
| 2 | ^(14)C measurement of forest soils in Dinghushan Biosphere Reserve显示文摘Organic carbon in forest soils of Qingyunsi and Wukesong profiles can be divided into fast and slow components. Δ14C values of these profiles decrease with increasing of depth. The Δ14C values in 30—40 cm depth interval of Wukesong profile are decreasing sharply until a very low value,showing that a strong geological environment change occurred about 1 560 years ago. The 14C apparent ages of Wukesong profile show that the coniferous and broad-leaf mixed forests around Wukesong profile have been developing since 425 a BP, which is consistent with historical documents. The penetrating depths of 'bomb 14C' in Qingyunsi and Wukesong profiles are 10 and 20 cm, respectively. | SHEN Chengde , LIU Dongsheng (LIU Tungsheng) , PENG Shaolin, SUN Yanmin , JIANG Mantao , Yl Weixi , XING Changping , GAO Quanzhou , LI Zhi’an and ZHOU Guoyi Guangzhou Institute of Geochemisry, Chinese Academy of Sciences, Guangzhou 510640, China Institute of Geology, Chinese Academy of Sciences , Beijing 100029, China South China Institute of Botany, Chinese Academy of Sciences, Guangzhou 510650, China | 1999 | Chinese Science Bulletin1999，44，3： | 7 |
| 3 | Prognosis in prolonged coma patients with diffuse axonal injury assessed by somatosensory evoked potential显示文摘A total of 43 prolonged coma patients with diffuse axonal injury received the somatosensory evoked potential examination one month after injury in the First Affiliated Hospital, School of Medicine, Zhejiang University in China. Somatosensory evoked potentials were graded as normal, abnormal or absent (grades Ⅰ-Ⅲ) according to N20 amplitude and central conduction time. The outcome in patients with grade Ⅲ somatosensory evoked potential was in each case unfavorable. The prognostic accuracy of grade Ⅲ somatosensory evoked potential for unfavorable and non-awakening outcome was 100% and 80%, respectively. The prognostic accuracy of grade Ⅰ somatosensory evoked potential for favorable and wakening outcome was 86% and 100%, respectively. These results suggest that somatosensory evoked potential grade is closely correlated with coma severity and degree of recovery. Somatosensory evoked potential is a valuable diagnostic tool to assess prognosis in prolonged coma patients with diffuse axonal injury. | Xiujue Zheng Mantao Chen Jingqi Li Fei Cao | 2013 | Neural Regeneration Research2013，8，10： | 5 |
| 4 | Design and experimental study of seed precise delivery mechanism for high-speed maize planter显示文摘Aiming at improving the seed spacing uniformity of maize planter at high forward speed,a seed precise delivery mechanism driven by electric motor has been developed and evaluated in laboratory.The mechanism was designed to deliver single seed from seed meter to furrow.Seed’s movement from the seed release point in a seed meter to the seed delivery cavity in the belt was analyzed,the mathematical model of seed movement in the seed precise delivery mechanism was established based on seed delivery time analysis.A mechanical prototype was designed and associated control system was developed.The performance contrast experiment was conducted between a traditional seed tube and newly developed seed precise delivery mechanism,and test results indicated that the qualities of feed index of the seed precise delivery mechanism were higher than those of the traditional seed tube delivery mechanism,and the coefficients of variation of the seed precise delivery mechanism were lower than those of the traditional seed tube delivery mechanism when the forward speed of planter was set at 10 km/h,12 km/h and 14 km/h,respectively.It indicated the seed precise delivery mechanism significantly improved seed spacing uniformity of maize planter compared with the traditional seed tube delivery mechanism. | Quanwei Liu Tao Cui Dongxing Zhang Li Yang Yunxia Wang Xiantao He Mantao Wang | 2018 | International Journal of Agricultural and Biological Engineering2018，11，4： | 4 |
| 5 | Effect of travel speed on seed spacing uniformity of corn seed meter显示文摘Both seeding performance of seed metering unit and travel speed of seed planter have significant effects on seeding quality,thereby affecting crop growth and yields.In order to determine the effects of different travel speeds on seed spacing uniformity,four different types of seed meters were evaluated at five different travel speeds on seed meter test bench and in field.The tested seed meters included a finger pickup seed meter,a scoop-wheel seed meter,an air-pressure type seed meter and an air-blowing type seed meter.The seeding performance of the horizontal distribution of seeds within a row was described by using the coefficient of variation,the quality of feed index,the multiple index and the miss-seeding index.Experiments were performed in laboratory and field,respectively.Results indicated that different travel speeds have statistically significant effects on seed spacing uniformity.The four types of seed meters performed better on the seed meter test bench than in the field.Coefficient of variation increases and quality of feed index decreases as the travel speed of seed planter increases.The best seed spacing uniformity was obtained with the air-pressure type seed meter,followed with the air-blowing type seed meter,the finger pickup seed meter and the scoop-wheel seed meter.There were considerable differences between the performances of the scoop-wheel seed meter in the bench test and field test;the seeding qualities were much better in the bench test than in the field test.The scoop-wheel seed meter is more sensitive to vibration than the other types of seed meters. | Liu Quanwei He Xiantao Yang Li Zhang Dongxing Cui Tao Qu Zhe Yan Bingxin Wang Mantao Zhang Tianliang | 2017 | International Journal of Agricultural and Biological Engineering2017，10，4： | 2 |
| 6 | Context quantization by kernel fisher discriminant显示文摘 | XU Mantao WU Xiaolin and Pasi F | 2006 | IEEE Transactions on Image Processing2006，15，1： | 1 |
| 7 | Spatial and temporal distribution of carbon isotopes in soil organic matter at the Dinghushan Biosphere Reserve, South China显示文摘 | Qingqiang Chen Chengde Shen Yanmin Sun Shaolin Peng Weixi Yi Zhi’an Li Mantao Jiang | 2005 | Plant and Soil (-)2005，，1： | 1 |
| 8 | MiR-26 controls LXR-dependent cholesterol efflux by targeting ABCA1 and ARL7显示文摘 | Dongsheng Sun Jun Zhang Jianhong Xie Wei Wei Mantao Chen Xiang Zhao | 2012 | FEBS Letters2012，，10： | 1 |
| 9 | Expression of metabotropic glutamate receptor 1a in a rat cortical neuronal model of in vitro mechanical injury and the effects of its competitive antagonist (RS)-1-aminoindan-1,5-dicarboxylic acid显示文摘The present study established a rat cortical neuronal model of in vitro mechanical injury.At 30 mi-nutes after injury,the survival rate of the injured cortical neurons was decreased compared with normal neurons,and was gradually decreased with aggravated degree of injury.Reverse transcription-polymerase chain reaction results showed that at 1 hour after injury,there was increased expression of metabotropic glutamate receptor 1a in cortical neurons.Immunohistochemical staining results showed that at 30 minutes after injury,the number of metabotropic glutamate receptor 1a-positive cells increased compared with normal neurons.At 12 hours after injury,lactate dehydrogenase activity in the (RS)-1-aminoindan-1,5-dicarboxylic acid (AIDA)-treated injury neurons was significantly decreased than that in the pure injury group.At 1 hour after injury,intracellular free Ca2+ concentration was markedly decreased in the AIDA-treated injury neurons than that in the pure injury neurons.These findings suggest that after mechanical injury to cortical neurons,metabotropic glutamate receptor 1a expression increased.The resulting increase in intracellular free Ca2+ concentration was blocked by AIDA,indicating that AIDA exhibits neuroprotective effects after mechanical injury. | Fei Cao Mantao Chen Xiujue Zheng Gu Li Liang Wen Xiaofeng Yang | 2011 | Neural Regeneration Research2011，6，28： | 0 |
| 10 | Altered expression of metabotropic glutamate receptor 1 alpha after acute diffuse brain injury Effect of the competitive antagonist 1-aminoindan-1, 5-dicarboxylic acid显示文摘The diffuse brain injury model was conducted in Sprague-Dawley rats, according to Marmarou's free-fall attack. The water content in brain tissue, expression of metabotropic glutamate receptor 1α mRNA and protein were significantly increased after injury, reached a peak at 24 hours, and then gradually decreased. After treatment with the competitive antagonist of metabotropic glutamate receptor 1α, (RS)-1-aminoindan-1, 5-dicarboxylic acid, the water content of brain tissues decreased between 12-72 hours after injury, and neurological behaviors improved at 2 weeks. These experimental findings suggest that the 1-aminoindan-1, 5-dicarboxylic acid may result in marked neuroprotection against diffuse brain injury. | Fei Cao Mantao Chen Gu Li Ke Ye Xin Huang Xiujue Zheng | 2012 | Neural Regeneration Research2012，7，2： | 0 |
| 11 | Survey on Deep Learning for Human Action Recognition显示文摘Human action recognition has gained popularity because of its worldwide applications such as video surveillance, video retrieval and human– computer interaction. This paper provides a comprehensive overview of notable advances made by deep neural networks in this field. Firstly, the basic conception of action recognition and its common applications were introduced. Secondly, action recognition was categorized as action classification and action detection according to its respective research goals. And various deep learning frameworks for recognition tasks were discussed in detail and the most challenging datasets and taxonomies were briefly reviewed. Finally, the limitations of the state-of-the-art and promising directions of the research were briefly outlined. | Zirui Qiu Jun Sun Mingyue Guo Mantao Wang Dejun Zhang | 2019 | 国际计算机前沿大会会议论文集2019，，2： | 0 |
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