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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 | Petroleum Migration Direction of the Silurian Paleo-pools in the Tarim Basin, Northwest China显示文摘摘要:在这份报纸获得的结果显示 carbazole 类型混合物有高热的稳定性并且也在氧化和简历降级显示出稳定性。这种混合物仍然在分析干燥沥青样品有高集中和完全的分发,证明他们在学习 paleo 水池的石油移植是特别地有用的。在期间盆在在 Tarim 盆的 Tazhong 和 Tabei 区域的志留纪的油气体水池形成是第一阶段的(在志留纪时期的结束) 并且在 Awati 区域的秒阶段(在里面二叠) ,石油经历了长途的迁居。在志留纪的结束在在 Tazhong 的志留纪 paleo 水池的形成期间高举,石油主要在 Manjiaer 来自更低、中间的寒武纪的来源岩石下垂。石油向首先在 Tazhong 进入志留纪水库床的西南南方移居了。然后,它进一步沿着结构的带的高度从西北在志留纪以内移居了到东南到在 Tazhong 的志留纪 pinchout 边界的区域。在 Tabei 高举,在期间水池形成第一阶段,石油也从在 Manjiaer 的更低、中间的寒武纪的来源岩石下垂。它移植了西北进入在 Tabei 的志留纪水库床第一高举,然后迁居在志留纪水库以内在一样的方向继续,最后,石油在更高的位置被套住。在在志留纪的秒阶段水池形成期间,在在 Awati 附近的区域的床下垂,石油主要在 Awati 来自降低中间的寒武纪的来源岩石下垂。石油通过主要路径在 sag 附近在所有方向从产生中心移居了到志留纪水库,并且石油最后在更高的地点被套住。 | LIU Luofu ZHAO Yande HUO Hong CHEN Lixin CHEN Yuanzhuang ZHAO Suping LI Chao LI Shuangwen GUO Yongqiang LI Yan Key Lab for Hydrocarbon Accumulation Mechanism in the China University of Petroleum,Ministry of Education Basin and Reservoir Research Center, China University of Petroleum,Beijing 102249, China | 2008 | Acta Geologica Sinica(English Edition)2008，82，1： | 12 |
| 3 | Evidence of Oil Sources and Migration in Triassic-Jurassic Reservoirs in the South Tianhuan Depression of the Ordos Basin, China Based on Analysis of Biomarkers and Nitrogen-Bearing Compounds显示文摘The Ordos Basin is an important intracontinental sedimentary basin in western China for its abundant Mesozoic crude oil resources. The southern part of the Tianhuan Depression is located in the southwestern marginal area of this Basin, in which the Jurassic and Triassic Chang-3 are the main oil-bearing strata. Currently, no consensus has been reached regarding oil source and oil migration in the area, and an assessment of oil accumulation patterns is thus challenging. In this paper, the oil source, migration direction, charging site and migration pathways are investigated through analysis of pyrrolic nitrogen compounds and hydrocarbon biomarkers. Oil source correlations show that the oils trapped in the Jurassic and Chang-3 reservoirs were derived from the Triassic Chang-7 source rocks. The Jurassic and Chang-3 crude oils both underwent distinct vertical migration from deep to shallow strata, indicating that the oils generated by Chang-7 source rocks may have migrated upward to the shallower Chang-3 and Jurassic strata under abnormally high pressures, to accumulate along the sand bodies of the ancient rivers and the unconformity surface. The charging direction of the Jurassic and Chang-3 crude oils is primarily derived from Mubo, Chenhao, and Shangliyuan, which are located northeast of the southern Tianhuan Depression, with oils moving toward the west, southwest, and south. The results show that an integration of biomarker and nitrogen-bearing compound analyses can provide useful information about oil source, migration, and accumulation. | ZHAO Yande YAO Jingli SUN Bainian Duan Yi DONG Chong DENG Xiuqing LIU Luofu | 2014 | Acta Geologica Sinica(English Edition)2014，88，6： | 10 |
| 4 | In vitro and in vivo biodegradation and biocompatibility of an MMT/BSA composite coating upon magnesium alloy AZ31显示文摘The performance of biodegradable magnesium alloy requires special attention to rapid degradation and poor biocompatibility, which can cause the implant to fail. Here, a sodium montmorillonite(MMT)/bovine serum albumin(BSA) composite coating was prepared upon magnesium alloy AZ31 via hydrothermal synthesis, followed by dip coating. We evaluated the surface characterization and corrosion behavior in vitro, and the biocompatibility in vitro and in vivo. Biodegradation progress of the MMT-BSA coated Mg pieces was examined through hydrogen evolution, immersion tests, and electrochemical measurements in Hank’s solution. In vitro biocompatibility studies were evaluated via hemolysis tests, dynamic cruor time tests, platelet adhesion, MTT testing and live-dead stain of osteoblast cells(MC3 T3-E1). It was found that the MMT-BSA coating had good corrosion resistance and a marked improvement in biocompatibility in comparison to bare Mg alloy AZ31. in vivo studies were carried out in rat model and the degradation was characterized by computed tomography scans. Results revealed that the MMT-BSA coated Mg alloy AZ31 implants maintained their structural integrity and slight degradation after 120 d of post-implantation. A100% survival rate for the rats was observed with no obvious toxic damages on the organs and tissues.Additionally, we proposed a sound coating formation mechanism. Considering the good corrosion protection and biocompatibility, the MMT-BSA coated Mg alloy AZ31 is a promising candidate material for biomedical implants. | Jian Wang Lanyue Cui Yande Ren Yuhong Zou Jinlong Ma Chengjian Wang Zhongyin Zheng Xiaobo Chen Rongchang Zeng Yufeng Zheng | 2020 | Journal of Materials Science & Technology2020，47，12： | 7 |
| 5 | Stability influence factors analysis and construction of a deep beam anchorage structure in roadway roof显示文摘Deep beam anchorage structures based on spatial distribution analysis of the cable prestressed field have been proposed for roadway roof support. Stability and other factors that influence deep beam structures are studied in this paper using mechanical calculations, numerical analysis and field measurements. A mechanical model of deep beam structure subjected to multiple loading is established, including analysis of roof support in the return airway of S1203 working face in the Yuwu coal mine, China. The expression of maximum shear stress in the deep beam structure is deduced according to the stress superposition criterion. It is found that the primary factors affecting deep beam structure stability are deep beam thickness, cable pre-tension and cable spacing. The variation of maximum shear stress distribution and prestressed field diffusion effects according to various factors are analyzed using Matlabòand FLAC3D^(TM) software, and practical support parameters of the S1203 return airway roof are determined.According to the observations of rock pressure, there is no evidence of roof separation, and the maximum values of roof subsidence and convergence of wall rock are 72 and 48 mm, respectively. The results show that the proposed roof support design with a deep beam structure is feasible and achieves effective control of the roadway roof. | Xie Shengrong Gao Mingming Chen Dongdong Sun Yanding Pan Hao Su Hai Lan Shizhong | 2018 | International Journal of Mining Science and Technology2018，28，3： | 7 |
| 6 | Application of defin让ive screening design to quantify the effects of process parameters on key granule characteristics and optimize operating parameters in pulsed-spray fluid-bed granulation显示文摘The pulsed-spray fluid-bed granulation (PSFBG) process was investigated and optimized using definitive scree ning design, a recently proposed new class of three-level desig n of experiment method. Such a design enabled quadratic models to be established that described the effect of six in put process parameters - inlet air temperature, inlet air humidity, binder spray rate, atomization pressure, pulse period, and pulse width - on the granule quality in a PSFBG process. Mathematical models of the mean particle size, relative size distribution width, production yield, and porosity were developed to quantify the relationships between the in flue ncing factors and critical quality attributes. On the basis of con strai nts on the desired granule properties, a design space for PSFBG was determined and ranges of the operating parameters were defined. An acceptable degree of prediction was confirmed by validation experiments, demonstrating the reliability and effectiveness of using definitive screening design to study the PSFBG process. This method can accelerate screening and optimization of this process within a large multidimensional design space. | Jie Zhao Wenlong Li Haibin Qu Geng Tian Yanding Wei | 2019 | Particuology2019，17，2： | 6 |
| 7 | Nondestructive assessment of quality of Nanfeng mandarin fruit by a portable near infrared spectroscopy显示文摘A portable near infrared spectroscopy system was developed for assessing the quality of Nanfeng mandarin fruit.One hundred and fifty-three Nanfeng mandarin samples were used to measure the performance of the system.Several pretreatment methods were adopted to process the spectra.Then Support Vector Machine(SVM),Back Propagation Neural Network(BPNN)and Partial Least Square(PLS)were used to build models for soluble solids content(SSC),titratable acidity(TA),vitamin C and surface color.The best results were obtained by SVM.The correlation coefficient(R)and root mean square error of prediction(RMSEP)were(0.93,0.65°Brix),(0.66,0.09%),(0.81,2.7mg/100g)and(0.57,0.81)for SSC,TA,vitamin C and color,respectively.The results demonstrated that the portable near infrared spectroscopy was feasible for determining the Nanfeng mandarin quality nondestructively. | Sun Xudong Zhang Hailiang Liu Yande | 2009 | International Journal of Agricultural and Biological Engineering2009，2，1： | 3 |
| 8 | Design and Dynamic Modeling of a 2-DOF Decoupled Flexure-Based Mechanism显示文摘Flexure mechanisms with decoupled characteristics have been widely utilized in precision positioning applications.However,these mechanisms suffer from either slow response or low load capability.Furthermore,asymmetric design always leads to thermal error.In order to solve these issues,a novel 2-DOF decoupled mechanism is developed by monolithically manufacturing sets of statically indeterminate symmetric(SIS) flexure structures in parallel.Symmetric design helps to eliminate the thermal error and Finite Element Analysis(FEA) results show that the maximum coupling ratio between X and Y axes is below 0.25% when a maximum pretension force of 200 N is applied.By ignoring the mass effect,all the SIS flexure structures are simplified to 'spring-damper' components,from which the static and dynamics model are derived.The relation between the first resonant frequency of the mechanism and the load is investigated by incorporating the load mass into the proposed dynamics model.Analytical results show that even with a load of 0.5 kg,the first resonant frequency is still higher than 300 Hz,indicating a high load capability.The mechanism's static and dynamic performances are experimentally examined.The linear stiffnesses of the mechanism at the working platform and at the driving point are measured to be 3.563 0 N·μm-1 and 3.362 1 N·μm-1,respectively.The corresponding estimation values from analytical models are 3.405 7 N·μm-1 and 3.381 7 N·μm-1,which correspond to estimation errors of-4.41% and 0.6%,respectively.With an additional load of 0.16 kg,the measured and estimated first resonant frequencies are 362 Hz and 365 Hz,respectively.The estimation error is only 0.55%.The analytical and experimental results show that the developed mechanism has good performances in both decoupling ability and load capability;its static and dynamic performance can be precisely estimated from corresponding analytical models.The proposed mechanism has wide potentials in precision positioning applications. | QIN Yanding TIAN Yanling ZHANG Dawei | 2012 | Chinese Journal of Mechanical Engineering2012，25，4： | 3 |
| 9 | SEMI-SUPERVISED RADIO TRANSMITTER CLASSIFICATION BASED ON ELASTIC SPARSITY REGULARIZED SVM显示文摘Non-collaborative radio transmitter recognition is a significant but challenging issue, since it is hard or costly to obtain labeled training data samples. In order to make effective use of the unlabeled samples which can be obtained much easier, a novel semi-supervised classification method named Elastic Sparsity Regularized Support Vector Machine (ESRSVM) is proposed for radio transmitter classification. ESRSVM first constructs an elastic-net graph over data samples to capture the robust and natural discriminating information and then incorporate the information into the manifold learning framework by an elastic sparsity regularization term. Experimental results on 10 GMSK modulated Automatic Identification System radios and 15 FM walkie-talkie radios show that ESRSVM achieves obviously better performance than KNN and SVM, which use only labeled samples for classification, and also outperforms semi-supervised classifier LapSVM based on manifold regularization. | Hu Guyu Gong Yong Chen Yande Pan Zhisong Deng Zhantao | 2012 | Journal of Electronics(China)2012，29，6： | 2 |
| 10 | Hard sialonceramics reinforced with SiC nanoparticles显示文摘 | LIU Q GAOl YANDS etal | 1999 | Mater Sci Eng A1999，269，12： | 2 |
| 11 | Lightweight 3D bioprinting with point by point photocuring显示文摘As photocrosslinkable materials,methacryloyl-modified hydrogels are widely used as bioinks in tissue engineering.Existing printing methods to use these hydrogels,including changing the viscosity of the material or mixing them with other printing components,have been explored,but their application has been limited due to low printing quality or high cost.In addition,the complex operation of bulky equipment restricts the application of these existing printing methods.This study presents a lightweight stereolithography-based three-dimensional(3D)bioprinting system with a smart mechanical and structural design.The developed bioprinter dimensions were 300 mm×300 mm×200 mm and it can be placed on a benchtop.The equipment has a mini bioink chamber to store a small amount of bioink for each printing.We systematically investigated the point-by-point curing process in the 3D bioprinting method,which can print mixed cells accurately and have good biocompatibility.Here,we provide a compact,low-cost stereolithography bioprinting system with excellent biocompatibility for 3D bioprinting with methacryloyl-modified hydrogels.It can be potentially used for drug screening,studying pathological mechanisms,and constructing biological disease models. | Peng Zhang Haoxuan Wang Peng Wang Yating Zheng Linxiang Liu Jun Hu Yande Liu Qing Gao Yong He | 2021 | Bioactive Materials2021，6，5： | 2 |
| 12 | Mechanism of Silurian Hydrocarbon Pool Formation in the Tarim Basin显示文摘There are three formation stages of Silurian hydrocarbon pools in the Tarim Basin. The widely distributed asphaltic sandstones in the Tazhong (central Tarim) and Tabei (northern Tarim) areas are the results of destruction of hydrocarbon pools formed in the first-stage,and the asphaltic sandstones around the Awati Sag were formed in the second-stage. The hydrocarbon migration characteristics reflected by the residual dry asphalts could represent the migration characteristics of hydrocarbons in the Silurian paleo-pools,while the present movable oil in the Silurian reservoirs is related to the later-stage (the third-stage) hydrocarbon accumulation. | Liu Luofu Chen Yuanzhuang Chen Lixin Pang Xiongqi Xie Qilai Huo Hong Zhao Suping Li Chao Li Shuangwen Guo Yongqiang Zhao Yande Li Yan | 2007 | Petroleum Science2007，4，4： | 2 |
| 13 | 自适应放射治疗[J]显示文摘 | YanD ViciniF WongJ 等 | | 医学和生物学中的物理学0，，： | 2 |
| 14 | Nondestructive measurement of soluble solid content of navel orange fruit by visible–NIR spectrometric technique with PLSR and PCA-BPNN显示文摘 | Yande Liu Xudong Sun Aiguo Ouyang | 2009 | LWT - Food Science and Technology2009，，4： | 2 |
| 15 | A novel broad-band Chebyshev-response rate-race ring coupler显示文摘 | C Y Chang and C C Yand | 1999 | IEEE Transaction on Microwave Theory and Technology1999，47，4： | 1 |
| 16 | Flow stress behavior and deformation characteristics of Ti-3Al-5V-5Mo compressed at elevated temperatures显示文摘 | Li L X Lou Y Yand L B | 2002 | Materials and Design2002，23，5： | 1 |
| 17 | Inside the black box:the role and composition of compensation peer Groups显示文摘 | FAULKENDER M YAND J | 2010 | Journal of Financial Economics2010，96，2： | 1 |
| 18 | Classification of rotifers with machine vision by shape moment invatiants显示文摘 | Chan- Yun Yand | 2000 | Aquacultural Engineering2000，24，： | 1 |
| 19 | Full-aperture wavefront reconstruction from annular subaperture interferometric data by us of Zernike annular ploynomials and a matrix method for testing large aspherie surfaces显示文摘 | Hou X Wu F Yand L | 2006 | Appl Opt2006，45，15： | 1 |
| 20 | Private benefits of control:an international comparison显示文摘 | Jarrel Brickle yand Netter | | 0，，： | 1 |
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