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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 | Proportional integral plus multi-frequency resonant current controller for grid-connected voltage source converter under imbalanced and distorted supply voltage conditions显示文摘This paper proposes a current control scheme for a grid-connected pulse width modulator(PWM) voltage source converter(GC-VSC) under imbalanced and distorted supply voltage conditions.The control scheme is implemented in the positive synchronously rotating reference frame and composed of a single proportional integral(PI) regulator and multi-frequency resonant controllers tuned at the frequencies of 2ω and 6ω,respectively.The experimental results,with the target of eliminating the active power oscillations and current harmonics on a prototype GC-VSC system,validate the feasibility of the proposed current control scheme during supply voltage imbalance and distortion. | Jia-bing HU Wei ZHANG Hong-sheng WANG Yi-kang HE Lie XU | 2009 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2009，10，10： | 15 |
| 4 | Characteristics of change in water quality along reclaimed water intake area of the Chaobai River in Beijing, China显示文摘To reveal the basic characteristics and controlling factors of water quality change in the project Wenyu to Chaobai reclaimed water diversion, the water quality in the study area was monitored for one year at seven monitoring sites. Inverse geochemical models of the statistical groups were developed using PHREEQC to elucidate the hydrochemistry characteristics of reclaimed water and the factors. The monitoring results indicated that nitrogen and phosphorus contents were significantly reduced along the river mainly caused by seasonal and location variation. The pH ranged from 7.44 to 9.81. Photosynthesis of algae and denitrification in anaerobic microenvironment ultimately led to a sudden p H increase after the Jian River and the Chaobai River confluence. Mg^(2+)and SO_4^(2-) levels dropped obviously in the summer and increased in winter seasons after intersection. Na+and Cl-are relatively stable, and marked drop in the concentration only after the two rivers meet. And there is a decrease of Ca^(2+) and HCO^(3-) and increase in CO_3^(2-) during monitoring period. As a whole, the primary ions and nutrient components, including nitrogen and phosphorus, had high levels in winter. Algae's photosynthesis and respiration were observed to have an impact on the river water quality; there was precipitation–dissolution of minerals and denitrification from upstream to downstream. Inverse geochemical PHREEQC modeling confirmed that there was precipitation of aragonite or calcite, and gypsum or anhydrite in summer, and dissolution in winter; as well as precipitation of dolomite in winter, and cationic exchange and denitrification along the river. | Lei Yang Jiangtao He Yumei Liu Jian Wang Lie Jiang Guangcai Wang | 2016 | Journal of Environmental Sciences2016，28，12： | 14 |
| 5 | 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 |
| 6 | Reconstruction of segmental bone defects in the rabbit ulna using periosteum encapsulated mesenchymal stem cells-loaded poly(lactic-co-glycolic acid) scaffolds显示文摘 | ZHANG Xin QI Yi-ying ZHAO Teng-fei LI Dan DAI Xue-song NIU Lie HE Rong-xin | 2012 | Chinese Medical Journal2012，，22： | 4 |
| 7 | 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 |
| 8 | 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 |
| 9 | Single-cell transcriptomic profiling unravels the adenoma-initiation role of protein tyrosine kinases during colorectal tumorigenesis显示文摘The adenoma-carcinoma sequence is a well-accepted roadmap for the development of sporadic colorectal cancer.However,cellular heterogeneity in aberrant epithelial cells limits our understanding of carcinogenesis in colorectal tissues.Here,we performed a single-cell RNA sequencing survey of 54,788 cells from patient-matched tissue samples,including blood,normal tissue,para-cancer,polyp,and colorectal cancer. | Xiaobo Zheng Jinen Song Chune Yu Zongguang Zhou Xiaowei Liu Jing Yu Guangchao Xu Jiqiao Yang Xiujing He Xin Bai Ya Luo Yu Bao Huifang Li Lie Yang Mingqing Xu Nan Song Xiaodong Su Jie Xu Xuelei Ma Hubing Shi | 2022 | Signal Transduction and Targeted Therapy2022，7，3： | 2 |
| 10 | 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 |
| 11 | Antigen-binding characteristics of AbCD71 and its inhibitory effect on PHA-induced lymphoproliferation显示文摘瞄准:调查准备 recombinant 的 anti-lymphoproliferative 效果 71 单音的同种细胞的抗体(AbCD71 ) 它是创作了的区别(CD ) 的妄想的人 / 鼠科的反簇导出老鼠,抗原绑定变量区域和导出人的经常的区域。方法:在原生质标志建设和 transfection 以后,在 transfectoma 上层清液的 AbCD71 的表示被三明治 ELISA 决定。间接免疫荧光试金被用来测量抗原绑定特征和百分比表示 CD71 的外部血单音的原子房间(PBMC ) 。抗体经由 diethylaminoethyl (DEAE ) 从腹水被净化 -Sephadex A-50 层析然后由 SDS 页识别了。最后,导致公众房产管理局的 PBMC 增长上的 AbCD71 的禁止的效果被甲基 thiazolyl tetrazolium (MTT ) 计算试金。结果:重链(C (H)) 和 AbCD71 的轻链(C (L)) 的经常的领域分别地在人的 Cgamma 家庭和人的 Ckappa 家庭。AbCD71 能与它的原来的鼠科的 mAb 竞争与 CD71 积极的人的白血病房间线 CEM 房间绑。AbCD71 能禁止单音的原子房间增长由 phytohemagglutinin (公众房产管理局) 导致了的外部血以一种剂量依赖者方式的在试管内,特别在时间点 0 和 12 h 在以后感应。没有统计差别什么时候与原来的鼠科的 mAb 相比。结论:AbCD71 是有希望的抑制免疫力的药。我们与妄想的人 / 鼠科的 mAb 堵住 CD71 的途径为延长紧密相联的接枝幸存提供新奇策略。 | Ping LEI Yong HE Qing YE Hui-fen ZHU Xiao-mei YUAN Jing LIE Wei XING Sha WO Wei DAI Xin SHEN Guo-bin WANG Guan-xin SHEN | 2007 | Acta Pharmacologica Sinica2007，28，10： | 2 |
| 12 | Dynamic modeling and direct power control of wind turbine driven DFIG under unbalanced network voltage conditions显示文摘This paper proposes an analysis and a direct power control (DPC) design of a wind turbine driven doubly-fed induction generator (DFIG) under unbalanced network voltage conditions. A DFIG model described in the positive and negative synchronous reference frames is presented. Variations of the stator output active and reactive powers are fully deduced in the presence of negative sequence supply voltage and rotor flux. An enhanced DPC scheme is proposed to eliminate stator active power oscillation during network unbalance. The proposed control scheme removes rotor current regulators and the decomposition processing of positive and negative sequence rotor currents. Simulation results using PSCAD/EMTDC are presented on a 2-MW DFIG wind power generation system to validate the feasibility of the proposed control scheme under balanced and unbalanced network conditions. | Jia-bing HU Yi-kang HE Lie XU | 2008 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2008，9，12： | 2 |
| 13 | Fabrication and Properties of Graphene Oxide/Sulfonated Polyethersulfone Layer-by-layer Assembled Polyester Fiber Composite Proton Exchange Membranes显示文摘 | HUANG Lihua HE Yao JIN Lying HOU Xiuwei MIAO Luyang LU Changli | 2018 | Chemical Research in Chinese Universities2018，34，2： | 2 |
| 14 | Improved control of DFIG systems during network unbalance using PI-R current regulators显示文摘 | Hu Jiabing He Yikang Xu Lie | 2009 | IEEE Transactions on Industrial Electronics2009，56，2： | 1 |
| 15 | Improved control of DFIG systems during network unbalance using PI-R current regulators显示文摘 | Hu Jiabing He Yikang Xu Lie | 2009 | IEEE Transactions on Industrial Electronics2009，56，2： | 1 |
| 16 | Improved rotor current control of wind turbine driven doubly-fedinduction generators during network voltage unbalance显示文摘 | Hu Jiabing He Yikang Xu Lie | 2010 | Electric Power Systems Research2010，80，7： | 1 |
| 17 | Improved control of DFIG systems during network unbalance using PI-R current regulators显示文摘 | Hu Jiabing He Yikang Xu Lie | 2009 | IEEE Transactions Industry Electronic2009，56，2： | 1 |
| 18 | Improvedcontrol of DFIG systems during network unbalance usingPI-R current regulators 显示文摘 | Hu Jiabing He Yikang Xu Lie | 2009 | IEEE Transactions onIndustrial Electronics2009，56，2： | 1 |
| 19 | Preparation and characteriza- tion of hollow fiber carbon membranes from cellulose acetate precursors显示文摘 | He X Lie J A Sheridan E | 2011 | Ind Eng Chem Res2011，50，4： | 1 |
| 20 | Improved control of DFIG systems during network unbalance using PI-R current regulators 显示文摘 | Hu Liabing He Yikang Xu Lie | 2009 | IEEE Transactions on Industrial Electronics2009，56，2： | 1 |
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