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| 1 | Nondestructive diagnostics of soluble sugar,total nitrogen and their ratio of tomato leaves in greenhouse by polarized spectra-hyperspectral data fusion显示文摘Polarized spectra-hyperspectral data fusion technique was used to estimate the soluble sugar(SS),total nitrogen(N),and their ratio(SS/N),of greenhouse tomato leaves.Fresh tomato leaves of five different growth stages(seedling,flowering,initial fruiting,mid-fruiting and picking stage)and five different nitrogen treatments(severe stress 25%,moderate stress 50%,mild stress 75%,normal 100%,and excess 150%)at every stage were collected for spectra acquisition and SS and N determination.Polarized reflectance spectra were acquired with a polarization reflectance spectrum spectro-goniophotometer system and four polarization degree features were extracted.Hyperspectral data were collected with a hyperspectral imaging system and four reflectance spectrum features and eight image features were extracted.Initially,models were built with polarization degree features,image features,and spectral features respectively.Linear and nonlinear fusion methods were comparatively used for modeling based on normalized data of the three sources.The results suggest that the performances of SS/N models are better than those of N and SS models,and the prediction capability of the Support Vector Machine(SVM)models of N and SS/N are superior to those obtained with single kind feature.This work indicates that the polarized spectrum-hyperspectral multidimensional information detecting method can feasibly judge the tomato nutrient stress conditions.Multi-features data fusion analysis technique can enhance the prediction accuracy of spectral diagnostics technology in precision agriculture. | Wenjing Zhu Jinyang Li Lin Li Aichen Wang Xinhua Wei Hanping Mao | 2020 | International Journal of Agricultural and Biological Engineering2020，13，2： | 5 |
| 2 | Kinetic Model of TiN Particle Dissolution and Coarsening during Welding Thermal Cycle显示文摘With carbon extraction replica technique, electron diffraction and EDAX analysis, second particle size distributionin two Ti microalloyed steels and their heat-affected zones were investigated. The results show that the particles inthe Ti microalloyed steels are TiN particles, and the TiN particles in the steel with lower Ti/N ratio exhibit smallersize and lower dissolution and coarsening rate and extent. Based on the investigation results, kinetic models for TiNparticle dissolution and coarsening during welding thermal cycle were developed. The predicted values calculated byusing the models are in good agreement with the experimental ones. | Mao'aiCHEN ChuansongWU JinqiangGAO YiminTANG | 2002 | Journal of Materials Science & Technology2002，18，5： | 3 |
| 3 | Nickel Oxide as an Electrode Material for Supercapacitors显示文摘The preparation of Ni oxide films and their capacitive mechanism are discussed in this paper. Nickel oxide film electrodes perform pseudocapacitance in aqueous KOH and NaOH but perform double layer capacitance in LiCIO4/PC (propylence carbonate). The effect of increasing the specific capacitance was observed when Ni oxide film electrodes are doped with Co. A specific capacitance of around 70 F/g was achieved when using Ni oxide films doped with Co as electrodes and 1 mol/L aqueous KOH or NaOH as an electrolyte. | KuiLIANG AiCHEN 等 | 2002 | Journal of Materials Science & Technology2002，18，4： | 2 |
| 4 | Quantification of microRNA-210 in the cerebrospinal fluid and serum:Implications for Alzheimer’s disease显示文摘 | Yan Zhu Chengshan Li Aichen Sun Yuanye Wang Shengnian Zhou | 2015 | Experimental and Therapeutic Medicine2015，，3： | 1 |
| 5 | Technology using near infrared spectroscopic and multivariate analysis to determine the soluble solids con tent of citrus fruit显示文摘 | Wang Aichen Xie Lijuan | 2014 | Food Engineering2014，143，： | 1 |
| 6 | Technology using near infrared spectroscopic and multivariate analysis to determine the soluble solids content of citrus fruit显示文摘 | Aichen Wang Lijuan Xie | 2014 | Journal of Food Engineering2014，143，： | 1 |
| 7 | Electrorheological Fluids Based on Titania Particles Coated with Silica and Their Application in Smart Windows显示文摘The electrorheological (ER) fluids are colloidal suspension of highly polarizable particles in a non-conducting solvent. Chains ofsubmicron-sized particles formed along an applied DC electric field by the so-called electrorheological effect. According to theobvious change of transmittance of the ER fluids in a DC electric field when the polarized particles arranged along the field,the model of smart window was proposed by sandwiching the ER fluids based on titania particles coated with silica between apair of In-Sn oxide (ITO) coated glasses. The solar transmittance change as much as 48.0% was obtained with the wavelengthof 500 nm at the maximum on applying and removing the electric field of 500 V/mm. | MengqiangWU AiCHEN ZhuoyaZHU YongquanHAN | 2002 | Journal of Materials Science & Technology2002，18，5： | 0 |
| 8 | Stability analysis of tunnel under coal seam goaf:Numerical and physical modeling显示文摘The goaf formed by coal seam mining would dramatically reduce the strength and stiffness of the ground in and around the goaf,which is not conducive to tunnel excavation near the mined-out area.By establishing the Finite differential method and Discrete element method coupling numerical analysis method and conducting similar model test,the influence of dip angle,thickness and distance of coal seam goaf on the stability of unsupported tunnel excavation is studied.The results show that when the tunnel under the goaf is exca-vated,the circumferential stress increment increases first and then decreases along the radial direction of the tunnel,the radial stress increment gradually decreases to zero along the radial direction of the tunnel,the displacement is approximately distributed in a trough shape,and the maximum displacement is at the top of the tunnel.The area of the stress loosening zone(SLZ)is negatively correlated with the dip angle and the distance of the goaf,and positively correlated with the thickness.The SLZ near the goaf is larger,and the peak value of the asymmetry is about 1.35.When the thickness of the mined-out area is 1.8–2.1 m,the SLZ and displacement around the tunnel increase sharply and then become stable.When the dip angle of the mined-out area is greater than 30°or the distance exceeds 1.3 times tunnel diameter(D),the asymmetry converges.The research results of this paper are of great importance to the design and construction of tunnel support and the formulation of excavation schemes. | Feng Huang Xiaoxiong Shi Chuangzhou Wu Guangfa Dong Xingchen Liu Aichen Zheng | 2023 | Underground Space2023，，4： | 0 |
| 9 | In vivo Inhibitory Effect of Lentivirus-mediated RNA Interference Targeting RhoC on Growth of SKOV3 Cells显示文摘 | PAN Ying WANG Ke LIU Yiehen QIN Rui CAO Lu WANG Jia ZHOU Guanghong ZHANG Aichen | 2017 | Chemical Research in Chinese Universities2017，33，3： | 0 |
| 10 | A sequential method for estimating the optical properties of two-layer agro-products from spatially-resolved diffuse reflectance: Simulation显示文摘A sequential method for estimating the optical properties of two-layer biological tissues with spatially-resolved diffuse reflectance was proposed and validated using Monte Carlo simulations.The relationship between the penetration depth of detected photons and source-detector separation was first studied.Photons detected at larger source-detector separations generally penetrated deeper into the medium than those detected at small source-detector separations.The effect of each parameter involved in the two-layer diffusion model(i.e.,the absorption and reduced scattering coefficients(μa andμs′)of each layer,and the thickness of top layer)on reflectance was investigated.It was found that the relationship between the optical properties and thickness of top layer was a critical factor in determining whether photons would have sufficient interactions with the top layer and also penetrate into the bottom layer.The constraints for the proposed sequential estimation method were quantitatively determined by the curve fitting procedure coupledwith error contourmap analyses.Results showed that the optical properties of top layer could be determinedwithin 10%error using the semi-infinite diffusion model for reflectance profiles with properly selected start and end points,when the thickness of top layer was larger than two times its mean free path(mfp′).And the optical properties of the bottom layer could be estimatedwithin 10%error by the two-layer diffusion model,when the thickness of top layerwas b16 times its mfp′.The proposed sequential estimation method is promising for improving the estimation of the optical properties of two-layer tissues from the same spatially-resolved reflectance. | Aichen Wang Xinhua Wei | 2019 | Artificial Intelligence in Agriculture2019，，3： | 0 |
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