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| 1 | Effects of citrus tree-shape and spraying height of small unmanned aerial vehicle on droplet distribution显示文摘In order to explore the droplet penetration of spraying with unmanned aerial vehicle(UAV)on citrus trees with different shapes,the tests were carried out at different working heights.The material was five years old Cocktail grapefruit(Citrus paradisi cv.Cocktail)grafted on Trafoliata(Poncirus trifoliata L.Raf.)and the type of UAV sprayer used was the 3W-LWS-Q60S.A solution of 300 times Ponceau 2R diluents liquid instead of pesticide was used for citrus fields spraying and the droplets were collected by paper cards.Droplets deposition parameters were extracted and analyzed using digital image processing after scanning the cards.The results showed that:1)For the trees with round head shape canopy,the droplet depositions of the upper,middle and lower layers had a significant difference at 0.05 level.The droplet deposition had the best effect when the working height was 1.0 m,where the average droplet deposition densities were 39.97 droplets/cm2 and the average droplet size was 0.30 mm,but the droplet coverage(3.19%)was lower than that at the working height of 1.5 m(4.27%).2)Under three different working heights of UAV,the tree with open center shape can obtain higher droplet deposition density at all three layers than that with the round head shape canopy.It was especially prominent when the working height was 1.0 m,as the middle layer increased by 49.92%.However,the higher range of droplet deposition density meant larger fluctuation and dispersion.3)The open center shape canopy and the 1.0 m working height obviously improved the droplet coverage rate and droplet density in the citrus plant.For these parameters of open center shape citrus tree,there was no obvious difference in the front and rear direction,but in the left and middle part of the tree crown,the difference reached a 0.05 significant level.Considering droplet deposition characteristics and the spray uniformity,the UAV performed better when working on open center shape plants at a 1.0 m working height. | Zhang Pan Deng Lie Lyu Qiang He Shaolan Yi Shilai Liu Yande Yu Yongxu Pan Haiyang | 2016 | International Journal of Agricultural and Biological Engineering2016，9，4： | 37 |
| 2 | Transplantation of endothelial progenitor cells transfected with VEGF165 to restore erectile function in diabetic rats显示文摘现在的学习调查了移植 endothelial 祖先细胞(EPC ) 的效果有进有糖尿病的可勃起的机能障碍(编辑) 的老鼠的阴茎海绵体的脉管的 endothelial 生长因素基因(VEGF165 ) 的 transfected。糖尿病的编辑的一个老鼠模型经由 streptozotocin 的 intraperitoneal 注射被构造。在 streptozotocin 治疗以后,预先对待从每三组老鼠的 EPC 被移植进他们的阴茎海绵体。我们的结果,监视的后面的 intracavernosal 压力(ICP ) ,看了在试用组在老鼠之中显著地增加的那 ICP 什么时候在基础条件和电的刺激期间与从在 blank-plasmid 和控制的老鼠的结果相比组织(P < 0.01 为两比较) 。组织学的检查在试用组在老鼠的阴茎海绵体揭示了广泛的 neovascularisation。荧光显微镜学在熬过的试用组移植 EPC 显示了那许多,区分了房间进 endothelial 并且集成于 neovascularisation 的地点。基于这研究的结果,我们断定进有糖尿病的编辑的老鼠的阴茎海绵体的 VEGF165-transfected EPC 的移植恢复可勃起的功能。 | Xin Gou Wei-Yang He Ming-Zhao Xiao Ming Qiu Ming Wang Yuan-Zhong Deng Chao-Dong Liu Zao-Bing Tang lie Li Yong Chen | 2011 | Asian Journal of Andrology2011，13，2： | 17 |
| 3 | Identification of fruit and branch in natural scenes for citrus harvesting robot using machine vision and support vector machine显示文摘With the decrease of agricultural labor and the increase of production cost,the researches on citrus harvesting robot(CHR)have received more and more attention in recent years.For the success of robotic harvesting and the safety of robot,the identification of mature citrus fruit and obstacle is the priority of robotic harvesting.In this work,a machine vision system,which consisted of a color CCD camera and a computer,was developed to achieve these tasks.Images of citrus trees were captured under sunny and cloudy conditions.Due to varying degrees of lightness and position randomness of fruits and branches,red,green,and blue values of objects in these images are changed dramatically.The traditional threshold segmentation is not efficient to solve these problems.Multi-class support vector machine(SVM),which succeeds by morphological operation,was used to simultaneously segment the fruits and branches in this study.The recognition rate of citrus fruit was 92.4%,and the branch of which diameter was more than 5 pixels,could be recognized.The results showed that the algorithm could be used to detect the fruits and branches for CHR. | Lü Qiang Cai Jianrong Liu Bin Deng Lie Zhang Yajing | 2014 | International Journal of Agricultural and Biological Engineering2014，7，2： | 17 |
| 4 | Prediction of nitrogen and phosphorus contents in citrus leaves based on hyperspectral imaging显示文摘The nutritional status of citrus leaves is very important to the determining of fertilization plans.The spectrum technique is a quick,un-injured method and is becoming widely used for plant nutrient estimation.The possibility and method of using spectrum technique to estimate the nutrient of citrus leaf was explored in this study.A total amount of 135 leaves from the mature spring shoots of navel orange trees(C.sinensis Osbeck,“Newhall”)were collected and randomly grouped into two sets of samples:100 leaves for the calibration set and 35 leaves for the prediction set.The hyperspectral images were scanned upper and lower side of each leaf and then the total nitrogen(N)and phosphorus(P)contents of each leaf were measured.The raw spectra data were extracted to generate average spectra curves,preprocessed with five different methods,and was used to build N and P content prediction models.The performances of the five preprocessing methods,i.e.,Savitzky-Golay smoothing(SGS),standard normal variate(SNV),multiplicative scatter correction(MSC),first-derivative(1-Der)and second-derivative(2-Der),were tested with linear partial least squares(PLS)models and nonlinear least squares-support vector machine(LS-SVM)models.The results showed that the SG-PLS and PLS were the best for the N predicting(Rp=0.9049,RMSEP=0.1041)and P(Rp=0.9235,RMSEP=0.0514)in citrus leaves,respectively;the hyperspectral image data from leaf‟s upper side predicting better for the contents of N and P.The study suggested that the hyperspectral image data from the upper side of the citrus leaves are suitable for nondestructive estimation of nutrient content. | Liu Yanli Lyu Qiang He Shaolan Yi Shilai Liu Xuefeng Xie Rangjin Zheng Yongqiang Deng Lie | 2015 | International Journal of Agricultural and Biological Engineering2015，8，2： | 5 |
| 5 | Detection of Huanglongbing(citrus greening) based on hyperspectral image analysis and PCR显示文摘Huanglongbing (HLB, citrus greening) is one of the most serious quarantine diseases of citrus worldwide. To monitor in real-time, recognize diseased trees, and efficiently prevent and control HLB disease in citrus, it is necessary to develop a rapid diagnostic method to detect HLB infected plants without symptoms. This study used Newhall navel orange plants as the research subject, and collected normal color leaf samples and chlorotic leaf samples from a healthy orchard and an HLB-infected orchard, respectively. First, hyperspectral data of the upper and lower leaf surfaces were obtained, and then the polymerase chain reaction (PCR) was used to detect the HLB bacterium in each leaf. The PCR test results showed that all samples from the healthy orchard were negative, and a portion of the samples from the infected orchard were positive. According to these results, the leaf samples from the orchards were divided into disease-free leaves and HLB-positive leaves, and the least squares support vector machine recognition model was established based on the leaf hyperspectral reflectance. The effect on the model of the spectra obtained from the upper and lower leaf surfaces was investigated and different pretreatment methods were compared and analyzed. It was observed that the HLB recognition rate values of the calibration and validation sets based on upper leaf surface spectra under 9-point smoothing pretreatment were 100% and 92.5%, respectively. The recognition rate values based on lower leaf surface spectra under the second-order derivative pretreatment were also 100% and 92.5%, respectively. Both upper and lower leaf surface spectra were available for recognition of HLB-infected leaves, and the HLB PCR-positive leaves could be distinguished from the healthy by the hyperspectral modeling analysis. The results of this study show that early and nondestructive detection of HLBinfected leaves without symptoms is possible, which provides a basis for the hyperspectral diagnosis of citrus with HLB. | Kejian WANG Dongmei GUO Yao ZHANG Lie DENG Rangjin XIE Qiang LV Shilai YI Yongqiang ZHENG Yanyan MA Shaolan HE | 2019 | Frontiers of Agricultural Science and Engineering2019，6，2： | 3 |
| 6 | Ca(NO3)2 canopy spraying during physiological fruit drop period has a better influence on the tree character and fruit quality of Newhall navel orange(Citrus sinensis Osbeck)显示文摘This study aimed to provide a theoretical basis for adopting suitable cultivation measures to tackle calcium(Ca) deficiency in citrus leaves. The Newhall navel orange(Citrus sinensis Osbeck) canopy was sprayed with 20.0 mmol L^(-1) of Ca(NO_3)_2 during physiological fruit drop period, fruit expanding period, and fruit maturing period on 30, 90, and 210 days after full bloom(DAFB), respectively, and its effects on leaf gas exchange parameters and leaf mineral nutrition and fruit quality were analyzed. The results showed that:(1) The photosynthetic rate(ACO_2) at 9:00 a.m. and 16:00 p.m. of fruit expanding period with 30 and 90 DAFB Ca(NO_3)_2 treatments slightly or significantly improved mainly by decreasing stomatal limitation and nonstomatal limitation, respectively.(2) Compared with control(CK), the Ca concentration in leaves with 30, 90, and 240 DAFB Ca(NO_3)_2 treatments increased by 127.16, 97.53, and 33.33%, respectively, and the leaf magnesium concentration also increased by more than 32.26%. However, Ca(NO_3)_2 canopy spraying on 30 DAFB significantly reduced the leaf potassium concentration, by 22.14% compared with CK.(3) Ca(NO_3)_2 canopy spraying on 30 DAFB decreased the second fruit drop rate by 30.55% and increased the weight per fruit by 25.04%, thus resulting in a significant increase in citrus yield.(4) Spraying Ca(NO3) on 30 DAFB mainly affected the metabolism of titratable acid(TA) to improve the maturity of citrus fruits. Whilst it improved the external quality and the coloring of citrus fruit significantly. Therefore, Ca(NO_3)_2 canopy spraying during physiological fruit drop period has a better influence on the tree character and fruit quality of Newhall navel orange(Citrus sinensis Osbeck). | ZHENG Yong-qiang YANG Qiong JIA Xue-mei LIU Yan-mei HE Shao-lan DENG Lie XIE Rang-jin YI Shi-lai Lu Qiang | 2017 | Journal of Integrative Agriculture2017，16，7： | 3 |
| 7 | Estimation of carbon and nitrogen contents in citrus canopy by low-altitude remote sensing显示文摘The study aimed to investigate the fast and nondestructive method for detecting carbon and nitrogen content in citrus canopy.The multispectral imagery of Tarocco blood orange(Citrus sinensis L.Osbeck)plant canopy was obtained by a multispectral camera array mounted at an eight-rotor unmanned aerial vehicle(UAV)flying at an altitude of 100 m above the canopy in Wanzhou District of Chongqing Municipality,China.Average spectral reflectance data of the whole canopy,mature leaf areas and young leaves areas were extracted from the imagery.Two spectral pre-processing methods,multiplicative scatter correction(MSC)and standard normal variable(SNV),and two modeling methods,the partial least squares(PLS)and the least squares support vector machine(LS-SVM),were adopted and compared for their prediction accuracy of total content of nitrogen,soluble sugar and starch in the leaves.The results showed that,based on the spectral data extracted from the mature leaves in the multispectral imagery,the PLS model based on the original spectrum obtained a Rp(correlation coefficient)of 0.6469 and RMSEP(root mean squares error of prediction)of 0.1296,suggested that it was the best for the prediction of total nitrogen content;the PLS model based on MSC(multiplicative scatter correction)spectrum pre-processing was the best for predicting total soluble sugar content(Rp=0.6398 and RMSEP=8.8891);and the LS-SVM model based on MSC was the best for the starch content prediction(Rp=0.6822 and RMSEP=14.9303).The prediction accuracy for carbon and nitrogen contents based on the spectral data extracted from the whole canopy and the young leaves were lower than that from the mature leaves.The results indicate that it is feasible to estimate the carbon and nitrogen contents by low-altitude airborne multispectral images. | Liu Xuefeng Lyu Qiang He Shaolan Yi Shilai Hu Deyu Wang Zhitao Xie Rangjin Zheng Yongqiang Deng Lie | 2016 | International Journal of Agricultural and Biological Engineering2016，9，5： | 2 |
| 8 | Serum Calcium Level is Associated with Brachial-ankle Pulse Wave Velocity in Middle-aged and Elderly Chinese显示文摘Objective To study the relation between serum calcium level and elevated BaPWV in Chinese subjects.Methods The relation between serum calcium level and elevated BaPWV was studied in 9 615subjects.The mean value of left and right BaPWV was analyzed.BaPWV was defined as high when it was?1 752.5 cm/s(the upper quartile)either side.Results The BaPWV and its elevated percentage progressively increased across the quartiles of the serum calcium level(P<0.05).The prevalence of elevated BaPWV was significantly higher in subjects of the second,third and highest quartiles than in those of the lowest quartile(26.9%,28.4%,and 33.2%vs23.7%,P=0.0116,P=0.0004,and P<0.0001).Logistic regression analysis revealed that the risk of elevated BaPWV was 1.32-fold higher in subjects of the highest quartile than in those of the lowest quartile(OR=1.32,95%CI:1.08-1.60).Conclusion The elevated serum calcium level is related to an elevated BaPWV and a higher risk of arterial stiffness,independent of conventional risk factors,in middle-aged and elderly Chinese subjects. | DENG Xin Ru ZHANG Yin Fei WANG Tian Ge XU Bai Hui SUN Ji Chao ZHAO Lie Bin XU Min CHEN Yu Hong WANG Wei Qing BI Yu Fang LU Jie Li | 2014 | Biomedical and Environmental Sciences2014，27，8： | 2 |
| 9 | An Organic Solvent-free Approach towards PDI/Carbon Cloth Composites as Flexible Lithium Ion Battery Cathodes显示文摘An acidic solution based method towards flexible lithium ion battery(LIB)cathodes is developed in this work with perylene diimide(PDI)as the electroactive component and carbon cloth(CC)as the current collector.In this approach,PDI is firstly dispersed in concentrated sulfuric acid(H2S04)and then deposited on CC substrate after the dilution of H2S04,which provides an organic solvent-free strategy to construct integrated LIB cathodes.The acdic solution based fabrication process also allows the facile adjusting of loading amounts of PDI in the cathodes,which can effectively influence the battery performances of the PDI/CC cathodes.As the result,the acidic solution processed PDI/CC cathode can deliver a high specific capacity of-36 mAh·g^-1 at the current density of 50 mA·g^-1 in both half cell with lithium foil as anode and full cell with pre-lithiated CC as anode.In both types of the batteries,the PDI/CC cathodes show good cycling stabilities by retaining^84%of the initial capacities after 300 charge-discharge cycles at 500 mA·g^-1.Additionally,the excellent mechanical stability of the PDI/CC cathode enables the LIBs in pouch cell to maintain the electrochemical performances under various bending states,demonstrating their potentials for flexible LIBs. | Dong-Qing Wu Deng Lu Peng Yang Lie Ma Biao Jiang Xin Xi Fan-Cheng Meng Wen-Bei Zhang Fan Zhang Qian-Qian Zhong Rui-Li Liu | 2020 | Chinese Journal of Polymer Science2020，38，5： | 1 |
| 10 | HBx relieves chromatin-mediated transcriptional repression of hepatitis B viral cccDNA involving SETDB1 histone methyltransferase显示文摘 | Lise Rivière Laetitia Gerossier Aurélie Ducroux Sarah Dion Qiang Deng Marie-Louise Michel Marie-Annick Buendia Olivier Hantz Christine Neuveut | 2015 | Journal of Hepatology2015，，5： | 1 |
| 11 | Sustainability of effluent irrigation schemes:A field investigation显示文摘 | Hu Xian deng Han Lie bao | 2000 | Journal of Bei Jing Forestry University2000，22，2： | 1 |
| 12 | Experimental in- vestigation on the performance of air cooler under frosting conditions 显示文摘 | Dong-quan Deng Lie Xu Shi-qiong Xu | 2003 | Applied Thermal Engineering2003，23，7： | 1 |
| 13 | Water-based route to ligand-selective synthesis of ZnSe and Cd-Doped ZnSe quantum dots with tunable ultraviolet A to blue photolumi- nescence 显示文摘 | Deng Z T Lie F L Shen S Y | 2009 | Langmuir2009，25，1： | 1 |
| 14 | Precipitable Water Vapor Retrieval Using Neural Network from Infrared Hyperspectral Soundings显示文摘 | Zhang Sheng Lan Xu Li Sheng Ding Ji Lie Liu Hai Lei Deng Xiao Bo | 2012 | Key Engineering Materials2012，，500： | 1 |
| 15 | Experimental investigation on the performance of air cooler under frosting conditions显示文摘 | Deng Dongquan Xu Lie Xu Shiqiong | 2003 | Applied Thermal Engineering2003，23，7： | 1 |
| 16 | Optimal flexible AC transmission systems (FACTS) devices allocation显示文摘 | Lie T T Deng W | 1999 | International Journal of Electrical Power and Energy Systems1999，19，2： | 1 |
| 17 | Water-based route to ligand-selective synthesis of ZnSe and Cd-doped ZnSe quantum dots with tunable ultraviolet A to blue photoluminescence 显示文摘 | Deng ZT Lie FL Shen SY | 2009 | Langmuir2009，25，1： | 1 |
| 18 | A novel method for the preparation of a highly stable and active CdS photocatalyst with a special nanostructure显示文摘 | Deng W J Lie J G | 2006 | J Phys Chem B2006，110，11： | 1 |
| 19 | Rootstocks influence fruit oleocellosis in ' Hamlin' sweet orange 显示文摘 | Yongqiang Zheng Lie Deng Shaolan He | 2012 | Scientia Horticulturae2012，128，2： | 1 |
| 20 | Polymorphisms of four bone mineral density candidate genes in Chinese populations and comparison with other populations of different ethnicity显示文摘 | Lie SF Deng FY Liu XH | 2003 | Bone Miner Metab2003，21，1： | 1 |
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