|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Effects of fan speed on spray deposition and drift for targeting air-assisted sprayer in pear orchard显示文摘In order to reduce the application dosage of pesticides,a targeting air-assisted(TAA)sprayer was developed and tested in this study.Fruit trees were assayed by an infrared detection system to determine if the canopy needs to be sprayed.This TAA sprayer was compared with conventional air-assisted(CAA)sprayers,and the impacts of various fan speeds(0,800 r/min,1300 r/min,and 1800 r/min)on spray deposition,coverage,and drift amount were tested.Ponceau 2R was used as tracer to measure spray deposition under each treatment.Droplet coverage and canopy deposition were best when the CAA application fan speed was increased to 1300 r/min,but at higher fan speeds,spray deposition and coverage in canopy did not increase because extra air flow blew droplets from the ground into the air.During TAA spraying,droplet sizes increased at opening and closing moments.Optimal spray effects were achieved when the auxiliary airflow velocity was increased at a fan speed of 1800 r/min.The research provides a useful reference for the design of TAA and parameters optimization method with respect to the relationship between droplets deposition into tree canopy,ground and drift in the air. | Qiu Wei Zhao Sanqin Ding Weimin Sun Chengda Lu Jiang Li Yinian Gu Jiabing | 2016 | International Journal of Agricultural and Biological Engineering2016，9，4： | 12 |
| 2 | Combined effects of volume ratio and nitrate recycling ratio on nutrient removal,sludge characteristic and microbial evolution for DPR optimization显示文摘The optimization of volume ratio(V_(An)/V_(A)/V_(0))and nitrate recycling ratio(R)in a two-sludge denitrifying phosphorus removal(DPR)process of Anaerobic Anoxic Oxic-Moving Bed Biofilm Reactor(A^(2)/O-MBBR)was investigated.The results showed that prolonged anaerobic retention time(HRT An:1.25→3.75 hr)exerted favorable effect on chemical oxygen demand(COD)removal(57.26%→73.54%),poly-β-hydroxyalkanoates(PHA)synthesis(105.70→138.12 mg COD/L)and PO_(4)^(3-)release(22.3→38.9 mg/L).However,anoxic retention time(HRT A)and R exhibited positive correlation with PHA utilization(43.87%-81.34%)and denitrifying phosphorus removal(DPR)potential(NO_(3)-/PO^(3-)_(4):0.57-1.34 mg/mg),leading to dramatical TN removal variations from 68.86%to 81.28%.Under the V An/V A/V O ratio of 2:6:0,sludge loss deteriorated nutrient removals but the sludge bioactivity quickly recovered when the oxic zone was recovered.The sludge characteristic and microstructure gradually transformed under the dissolved oxygen(DO)control(1.0-1.5→1.5-2.0 mg/L),in terms of sludge volume index(SVI:194→57 m L/g VSS),median-particle-size(D 50:99.6→300.5μm),extracellular polymeric substances(EPS)(105.62→226.18 mg/g VSS)and proteins/polysaccharides(PN/PS)ratio(1.52→3.46).Fluorescence in situ hybridization(FISH)results showed that phosphorus accumulation organisms(PAOs)(mainly Cluster I of Accumulibacter,contribution ratio:91.79%-94.10%)dominated the superior DPR performance,while glycogen accumulating organisms(GAOs)(mainly Competibacter,contribution ratio:82.61%-86.89%)was responsible for deteriorative TN and PO_(4)^(3-)removals.The optimal HRT A and R assembled around 5-6.5 hr and 300%-400%based on the PHA utilization and DRP performance,and the oxic zones also contributed to PO_(4)^(3-)removal although it showed low dependence on DO concentration and oxic retention time(HRT_(0)). | Miao Zhang Jing Gao Yajun Fan Xiaoge Wu Jun Wu Chengda He | 2021 | Journal of Environmental Sciences2021，33，6： | 6 |
| 3 | An antiretroviral regimen containing 6 months of stavudine followed by long-term zidovudine for first-fine HIV therapy is optimal in resource-limited settings: a prospective, multicenter study in China显示文摘 | Li Taisheng Guo Fuping Li Yijia Zhang Chengda Han Yang Lye Wei He Yun Lu Hongzhou Xie Jing Huang Aiqiong Li Yanling Tang Xiaoping Wang Hui Zhang Tong Gao Guiju Lei Junkang Zhang Xiaoying Wu Xinhua Sun Yongtao Bai Jinsong Luo Ling Wang Huanlmg | 2014 | Chinese Medical Journal2014，，1： | 6 |
| 4 | Enhanced CO catalytic oxidation by Sr reconstruction on the surface of LaxSr1-xCoO3-δ显示文摘Surface electronic structure of solid materials plays a critical role in heterogeneous catalysis. However,surface chemical composition of the perovskite oxides is usually dominated by segregated A-site cations and the amount of oxygen vacancies is relatively low, which seriously restricts their catalytic oxidation property. Here, we prepare perovskite La_xSr_(1-x)CoO_(3-δ)(x = 0.3, 0.5, 0.7) with different Sr doping amount and experiment results show that perovskite LSCO with higher content of surface Sr possesses more oxygen vacancies and better catalytic activity. On this basis, we develop a new experimental strategy to create more surface oxygen vacancies to promote their CO catalytic activity. In this method, we use high active hydrogen atoms(BH^(4-)) as reductant to realize surface in-situ chemical composite modification of La_xSr_(1-x)CoO_(3-δ)(x = 0.3, 0.5, 0.7), which causes their surface reconstruction(surface Sr enrichment).The regulation mainly focuses on the atomic layer level without damaging their bulk phase structure.Different from traditional high temperature annealing under reducing atmosphere, this method is high-efficiency, green and controllable. Furthermore, we study the surface reconstruction process and demonstrated that it is atomic layer engineering on the surface of La_xSr_(1-x)CoO_(3-δ)(x = 0.3, 0.5, 0.7) by X-ray photoelectron spectroscopy(XPS) and X-ray absorption fine structure(XAFS). Our experiment results also show that these samples treated by this method exhibit superior activity for CO oxidation compared with original samples. | Xiyang Wang Keke Huang Jingyu Qian Yingge Cong Chengda Ge Shouhua Feng | 2017 | Science Bulletin2017，62，9： | 5 |
| 5 | Machine learning-assisted systematical polymerization planning:case studies on reversible-deactivation radical polymerization显示文摘The combined influence of chemical composition,molecular weight(MW)and molecular weight distribution(D)on the functions and performances of polymeric materials necessitates simultaneous satisfaction of multidimensional requirements during polymer synthesis.However,the complexity of polymerization reactions often dissuades chemists when precisely accessing diversified polymer targets.Herein,we developed a machine learning(ML)-assisted systematical polymerization planning(SPP)platform for addressing this challenge.With ML model providing integrated navigation of the reaction space,this approach can conduct multivariate analysis to uncover complex interactions between the polymerization result and conditions,prescribing optimal reaction conditions to achieve discretionary polymer targets concerning three dimensions including chemical composition,MWandD values.Given the increasing importance of polymerization in advanced material engineering,this ML-assisted SPP platform provides a universal strategy to access tailored polymers with on-demand prediction of polymerization parameters. | Yu Gu Peirong Lin Chengda Zhou Mao Chen | 2021 | Science China Chemistry2021，64，6： | 2 |
| 6 | Corrosion analysis, and use of an inhibitor in oil wells显示文摘 | Jiandong Li Chengda Wang Jie Liu Li Liu Zhifu Yin Yongqiang Zhang Hui Li Fei He | 2014 | Research on Chemical Intermediates2014，，2： | 1 |
| 7 | Nonlinear image recovery with half-quadratic regularization显示文摘 | Geman D Yang Chengda | 1995 | IEEE Processing1995，4，7： | 1 |
| 8 | Characterizations of Mg-W System Graded-Density Impactors for Complex Loading Experiments显示文摘 | Guoqiang Luo Jinsong Bai Hua Tan Qiang Shen Jianbo Hu Qingsong Wang Chengda Dai Qiang Wu Lianmeng Zhang | 2010 | Metallurgical and Materials Transactions A2010，，9： | 1 |
| 9 | A Meta-analysis of 2-Year Effect After Surgery: Laparoscopic Roux-en-Y Gastric Bypass Versus Laparoscopic Sleeve Gastrectomy for Morbid Obesity and Diabetes Mellitus显示文摘 | Chengda Zhang Yuan Yuan Cuiqiong Qiu Weidong Zhang | 2014 | Obesity Surgery2014，，9： | 1 |
| 10 | Stable and Highly Flexible Perovskite Solar Cells with Power Conversion Efficiency Approaching 20% by Elastic Grain Boundary Encapsulation显示文摘Here,we show that flexible perovskite solar cells(PSCs)with high operational stability and power conversion efficiency(PCE)approaching 20%were achieved by elastic grain boundary(GB)encapsulation.An introduction of trimethyltrivinylcyclotrisiloxane(V3D3)and solvent annealing(SA)resulted in an in situ cross-linking reaction between GBs and enlarged grain size that enabled oriented charge-transport properties to be achieved synchronously,leading to reduced sheet resistance with a high fill factor(FF)up to 82.93%in flexible PSCs. | Chengda Ge Ziqi Yang Xiaoting Liu Yilong Song Anran Wang Qingfeng Dong | 2021 | CCS Chemistry2021，3，7： | 1 |
| 11 | Nonlinear image recovery with half-quadratic regularization显示文摘 | Geman D Yang Chengda | 1995 | IEEE Transactions on Image Processing1995，4，7： | 1 |
| 12 | Shock-induced bct-bcc transition and melting of tin identified by sound velocity measurements显示文摘 | Hu Jianbo Zhou Xianming Dai Chengda | 2008 | Journal of Applied Physics2008，104，08： | 1 |
| 13 | Modeling of the submerged membrane bioreaetor fouling by the combined pore constriction, pore blockage and cake formation mechanisms显示文摘 | Wu Jun He Chengda Jiang Xinyue | 2011 | Desalination2011，279，： | 1 |
| 14 | Modeling of the submerged membrane bioreactor fouling by the combined pore constriction, pore blockage and cake formation mechanisms 显示文摘 | JunWu Chengda Ha Xinyue Jian | 2011 | Desalination2011，279，： | 1 |
| 15 | Characterizations of Mg-W System Graded-Density Impactors for Complex Loading Experiments显示文摘 | Guoqiang Luo Jinsong Bai Hua Tan Qiang Shen Jianbo Hu Qingsong Wang Chengda Dai Qiang Wu Lianmeng Zhang | 2010 | Metallurgical and Materials Transactions A2010，，9： | 1 |
| 16 | Numerical simulation of reservoir sediment and effects on hydrodynamic response of arch dams 显示文摘 | ZHANG Chuhan YAN Chengda WANG Guanglun | 2001 | Earthquake Engineering and Structure Dynamics2001，30，： | 1 |
| 17 | Mechanism and Dynamics of the Addition of Lithium Hydride to Acetylene显示文摘Reaction ergodography for the addition of lithium hydride to acetylene indicates that the lithium hydride, in both monomeric and dimeric forms, reacts with the acetylene via two similar and competitive pathways. Hence, we have obtained the pseudo-first-order rate constant of this reaction. | Chen Bin, Zhao Chengda and Huang Jingan (Department of Chemistry, Northeast Normal University, Changchun) | 1991 | Chemical Research in Chinese Universities1991，7，2： | 1 |
| 18 | Nu- merical Simulation of Reservoir Sediment and Effects on Hydro-dynamic Response of Arch Dams 显示文摘 | Zhang Chuhan Yan Chengda Wang Guanglun | 2001 | Earthquake Engineering and Structure Dynam- ics2001，30，： | 1 |
| 19 | Surface modification of pure titanium treated with B 4 C at high temperature显示文摘 | Lijian He Xiaonong Zhang Chengda Tong | 2004 | Surface & Coatings Technology2004，，9： | 1 |
| 20 | Modeling membrane fouling in a submerged membrane bioreactor by considering the role of solid,colloidal and soluble components 显示文摘 | Wu Jun He Chengda Zhang Yaping | 2012 | Journal of Membrane Science2012，397，： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员