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| 1 | A method to estimate concentrations of surface-level particulate matter using satellite-based aerosol optical thickness显示文摘We propose a new method to estimate surface-level particulate matter(PM)concentrations by using satellite-retrieved Aerosol Optical Thickness(AOT).This method considers the distribution and variation of Planetary Boundary Layer(PBL)height and relative humidity(RH)at the regional scale.The method estimates surface-level particulate matter concentrations using the data simulated by an atmospheric boundary layer model RAMS and satellite-retrieved AOT.By incorporation MODIS AOT,PBL height and RH simulated by RAMS,this method is applied to estimate the surface-level PM 2.5 concentrations in North China region.The result is evaluated by using 16 ground-based observations deployed in the research region,and the result shows a good agreement between estimated PM 2.5 concentrations and observations,and the coefficient of determination R2 is 0.61 between the estimated PM 2.5 concentrations and the observations.In addition,surface-level PM 2.5 concentrations are also estimated by using MODIS AOT,ground-based LIDAR observations and RH measurements.A comparison between the two estimated PM 2.5 concentrations shows that the new method proposed in this paper is better than the traditional method.The coefficient of determination R2 is improved from 0.32 to 0.62. | TAO JinHua ZHANG MeiGen CHEN LiangFu WANG ZiFeng SU Lin GE Cui HAN Xiao ZOU MingMin | 2013 | Science China Earth Sciences2013，56，8： | 20 |
| 2 | Evaluation of the SMOS and SMAP soil moisture products under different vegetation types against two sparse in situ networks over arid mountainous watersheds, Northwest China显示文摘Assessment of the suitability of satellite soil moisture products at large scales is urgently needed for numerous climatic and hydrological researches, particularly in arid mountainous watersheds where soil moisture plays a key role in landatmosphere exchanges. This study presents evaluation of the SMOS(L2) and SMAP(L2_P_E and L2_P) products against ground-based observations from the Upstream of the Heihe River Watershed in situ Soil Moisture Network(UHRWSMN) and the Ecological and Hydrological Wireless Sensor Network(EHWSN) over arid high mountainous watersheds, Northwest China.Results show that all the three products are reliable in catching the temporal trend of the in situ observations at both point and watershed scales in the study area. Due to the uncertainty in brightness temperature and the underestimation of effective temperature, the SMOS L2 product and both the SMAP L2 products show 'dry bias' in the high, cold mountainous area. Because of the more accurate brightness temperature observations viewing at a constant angle and more suitable estimations of single scattering albedo and optical depth, both the SMAP L2 products performed significantly better than the SMOS product.Moreover, comparing with station density of in situ network, station representation is much more important in the evaluation of the satellite soil moisture products. Based on our analysis, we propose the following suggestions for improvement of the SMOS and SMAP product suitability in the mountainous areas: further optimization of effective temperature; revision of the retrieval algorithm of the SMOS mission to reduce the topographic impacts; and, careful selection of in situ observation stations for better representation of in situ network in future evaluations. All these improvements would lead to better applicability of the SMOS and SMAP products for soil moisture estimation to the high elevation and topographically complex mountainous areas in arid regions. | Lanhui ZHANG Chansheng HE Mingmin ZHANG Yi ZHU | 2019 | Science China Earth Sciences2019，62，4： | 10 |
| 3 | A MATHEMATICAL MODEL FOR RESERVOIR SEDIMENTATION AND FLUVIAL PROCESSES显示文摘This paper consists of two parts: mechanism of non-equilibrium transport of non-uniform sediment and its application in the mathematical model. Based on a statistic approach of sediment transport proposed by the authors, a 1 - D equation of non-e- quilibrium transport for various size group of sediment particles is developed. Then equations to predict change of sediment concentration and the corresponding changes in size distribution of suspended load and bed material are also derived. The conception that changes in size distribution are interrelated to sediment-carrying capacity is expounded. These results reveal the essence of sediment transport of non-uniform sediment particles. In the second part a mathematical model incorporating the mentioned equations to compute deposition and scouring in reservoirs as well as the fluvial processes of river channels has been developed. Verification of the model agrees well with field data. | Han Qiwei and He Mingmin (Senior Research Engineers, Dept. of Sedimentation Eng. Inst. of Water Conservancy and Hydroelectric Power Research.) (The English text is abridged, altered and edited by Ding Lianzhen) | 1990 | International Journal of Sediment Research1990，5，2： | 10 |
| 4 | Role of MR-DWI and MR-PWI in the radiotherapy of implanted pulmonary VX-2 carcinoma in rabbits显示文摘Objective: To detect the activity of tumor cells and tumor blood flow before and after the radiotherapy of implanted pulmonary VX-2 carcinoma in rabbit models by using magnetic resonance diffusion-weighted imaging(MR-DWI) and magnetic resonance perfusion weighted imaging(MR-PWI), and to evaluate the effectiveness and safety of the radiotherapy based on the changes in the MR-DWI and MR-PWI parameters at different treatment stages.Methods: A total of 56 rabbit models with implanted pulmonary VX-2 carcinoma were established, and then equally divided into treatment group and control group. MR-DWI and MR-PWI were separately performed using a Philips Acheiva 1.5T MRI machine(Philips, Netherland). MRI image processing was performed using special perfusion software and the WORKSPACE advanced workstation for MRI. MRDWI was applied for the observation of tumor signals and the measurement of apparent diffusion coefficient(ADC) values; whereas MR-PWI was used for the measurement of wash in rate(WIR), wash out rate(WOR), and maximum enhancement rate(MER). The radiation treatment was performed using Siemens PRIMUS linear accelerator. In the treatment group, the radiotherapy was performed 21 days later on a once weekly dosage of 1,000 c Gy to yield a total dosage of 5,000 c Gy.Results: The ADC parameters in the region of interest on DWI were as follows: on the treatment day for the implanted pulmonary VX-2 carcinoma, the t values at the center and the edge of the lesions were 1.352 and 1.461 in the treatment group and control group(P>0.05). During weeks 0-1 after treatment, the t values at the center and the edge of the lesions were 1.336 and 1.137(P>0.05). During weeks 1-2, the t values were 1.731 and 1.736(P<0.05). During weeks 2-3, the t values were 1.742 and 1.749(P<0.05). During weeks 3-4, the t values were 2.050 and 2.127(P<0.05). During weeks 4-5, the t values were 2.764 and 2.985(P<0.05). The ADC values in the treatment group were significantly higher than in the control group. After the radiotherapy(5,000 c Gy), the tumors remarkably shrank, along with low signal on DWI, decreased signal on ADC map, and remarkably increased ADC values. As shown on PWI, on the treatment day for the implanted pulmonary VX-2 carcinoma, the t values of the WIR, WOR, and MER at the center of the lesions were 1.05, 1.31, and 1.33 in the treatment group and control group(P>0.05); in addition, the t values of the WIR, WOR, and MER at the edge of the lesions were 1.35, 1.07, and 1.51(P>0.05). During weeks 0-1 after treatment, the t values of the WIR, WOR, and MER at the center of the lesions were 1.821, 1.856, and 1.931(P<0.05); in addition, the t values of the WIR, WOR, and MER at the edge of the lesions were 1.799, 2.016, and 2.137(P<0.05). During weeks 1-1 after treatment, the t values of the WIR, WOR, and MER at the center of the lesions were 2.574, 2.156, and 2.059(P<0.05) and the t values of the WIR, WOR, and MER at the edge of the lesions were 1.869, 2.058, and 2.057(P<0.05). During weeks 2-3 after treatment, the t values of the WIR, WOR, and MER at the center of the lesions were 2.461, 2.098, and 2.739(P<0.05) and the t values of the WIR, WOR, and MER at the edge of the lesions were 2.951, 2.625, and 2.154(P<0.05). During weeks 3-4 after treatment, the t values of the WIR, WOR, and MER at the center of the lesions were 2.584, 2.107, and 2.869(P<0.05) and the t values of the WIR, WOR, and MER at the edge of the lesions were 2.057, 2.637, and 2.951(P<0.05). During weeks 4-5 after treatment, the t values of the WIR, WOR, and MER at the center of the lesions were 2.894, 2.827, and 3.285(P<0.05) and the t values of the WIR, WOR, andMER at the edge of the lesions were 3.45, 3.246, and 3.614(P<0.05). After the radiotherapy(500 c Gy), the tumors shrank on the T1 WI, WIR, WOR, and MER; meanwhile, the PWI parameter gradually decreased and reached its minimum value.Conclusions: MR-DWI and MR-PWI can accurately and directly reflect the inactivation of tumor cells and the tumor hemodynamics in rabbit models with implanted pulmonary VX-2 carcinoma, and thus provide theoretical evidences for judging the clinical effectiveness of radiotherapy for the squamous cell carcinoma of the lung. | Qiang Zhang Mingmin Zhang Zhaoxin Liu Baoqi Shi Fuliang Qi Haijiang Wang Yuan Lv Haijiao Jin Weijing Zhang | 2014 | Chinese Journal of Cancer Research2014，26，5： | 5 |
| 5 | Current anti-diabetes mechanisms and clinical trials using Morus alba L.显示文摘Backgrounds:Diabetes mellitus,especially type 2 diabetes,with its fast-rising prevalence,has become a global epidemic.Mulberry(Morus alba L.)leaf has been known to have hypoglycemic effects since ancient times.In Asia mulberry leaf is used as tea to complement the treatment of diabetes mellitus.The methods by which mulberry leaf affects the body and its mechanism when combined with chemical agents have been studied extensively.Conclusions:We summarize the possible mechanisms of the anti-diabetic effects of mulberry leaf based on extraction procedures,in vitro and in vivo experiments,and clinical trials.We also discuss the hypothesis that crosstalk and“critical nodes”may be useful for a deeper molecular understanding of the treatment and prevention of diabetes with mulberry leaf. | Simin Tian Mingmin Tang Baosheng Zhao | 2016 | Journal of Traditional Chinese Medical Sciences2016，3，1： | 4 |
| 6 | A Dual-driven Intelligent Combination Control of Heat Pipe Space Cooling System显示文摘Effective thermal control systems are essential for reliable operation of spacecraft.A dual-driven intelligent combination control strategy is proposed to improve the temperate control and heat flux tracking effects.Both temperature regulation and heat flux tracking errors are employed to generate the final control action;their contributions are adaptively adjusted by a fuzzy fusing policy of control actions.To evaluate the control effects,describe a four-nodal mathematical model for analyzing the dynamic characteristics of the controlled heat pipe space cooling system(HP-SCS) consisting of an aluminum-ammonia heat pipe and a variable-emittance micro-electromechanical-system(MEMS) radiator.This dynamical model calculates the mass flow-rate and condensing pressure of the heat pipe working fluid directly from the systemic nodal temperatures,therefore,it is more suitable for control engineering applications.The closed-loop transient performances of four different control schemes have been numerically investigated.The results conclude that the proposed intelligent combination control scheme not only improves the thermal control effects but also benefits the safe operation of HP-SCS. | LI Yunze LI Mingmin LEE Kok Meng | 2012 | Chinese Journal of Aeronautics2012，25，4： | 4 |
| 7 | Mechanisms of Traditional Chinese Medicine Bushenantai granules(补肾安胎颗粒) in promoting angiogenesis at the maternal-fetal interface of recurrent spontaneous abortion mice显示文摘OBJECTIVE:To assess the effects of Bushenantai(BSAT)granule(补肾安胎颗粒)on angiogenesis-related factors[E2,P,and vascular endothelial growth factor(VEGF)]at the maternal-fetal interface of recurrent spontaneous abortion(RSA)mice,and to evaluate the role of BSAT in promoting angiogenesis at the maternal-fetal interface by influencing the expression of sex hormones,and VEGF.METHODS:A mouse model with normal pregnancy and another with Clark’s classic RSA were established.The RSA mice were randomly assigned to six groups:normal,model,progesterone,high-doseBSAT granule(BSAT-H),medium-dose-BSAT granule(BSAT-M),and low-dose-BSAT granule(BSAT-L)(n=10 for each group).The embryo loss rate and the histopathological changes in the decidual tissues were measured.Serum levels of estrogen(E2),progesterone(P),and VEGF were detected by enzyme-linked immunosorbent assay.The m RNA and protein expressions of estradiol receptor(ER),progesterone receptor(PR),VEGF,and vascular endothelial growth factor receptor 2(VEGFR2)in the decidual tissues were identified by immunohistochemistry,Western blotting,and quantitative reverse transcription polymerase chain reaction.RESULTS:The embryo loss rate in all groups that received BSAT treatment was reduced,while the number of blood vessels at decidual tissues was increased.The serum levels of E2,P and VEGF were elevated,and the m RNA and protein expressions of ER,PR,VEGF,and VEGFR2 in the decidual tissues were enhanced.CONCLUSION:BSAT can improve angiogenesis at the maternal-fetal interface and reduce the embryo loss rate,which may be associated with its ability to increase the serum levels of estrogen,progesterone,and VEGF,in addition to up-regulation of m RNA and protein expression of ER,PR,VEGF,and VEGFR2 in the decidual tissues. | LI Yuanqi LI Weili YU Xinhui WU Hua WANG Yuanzhong JIN Ya HAO Lele LIU Mingmin SONG Xiaoge | 2021 | Journal of Traditional Chinese Medicine2021，41，4： | 3 |
| 8 | A polynomial chaos expansion method for the uncertain acoustic field in shallow water显示文摘To obtain a universal model solving the uncertain acoustic field in shallow water,a non-intrusive model coupled polynomial chaos expansion(PCE) method with Helmholtz equation is established,in which the polynomial coefficients are solved by probabilistic collocation method(PCM).For the cases of Pekeris waveguide which have uncertainties in depth of water column,in both sound speed profile and depth of water column,and for the case of thermocline with lower limit depth uncertain,probability density functions(PDF) of transmission loss(TL) are calculated.The results show that the proposed model is universal for the acoustic propagation codes with high computational efficiency and accuracy,and can be applied to study the uncertainty of acoustic propagation in the shallow water environment with multiple parameters uncertain. | CHENG Guangli ZHANG Mingmin | 2013 | Chinese Journal of Acoustics2013，32，4： | 3 |
| 9 | Acupuncture stimulation of Yamen(GV 15), Fengfu(GV 16), Baihui(GV 20), Shuigou(GV 26) and Hegu(LI 4) reduces brain microglia activation in a traumatic brain injury rat model显示文摘OBJECTIVE: To evaluate the effect of acupuncture on neuroinflammation in traumatic brain injury(TBI) rats by stimulating Yamen(GV 15), Fengfu(GV16), Baihui(GV 20), Shuigou(GV 26) and Hegu(LI 4)acupoints and to investigate the mechanism underpinning this effect.METHODS: A TBI model was induced in SpragueDawley rats using Feeney's freefall impact method.Acupuncture to stimulate the Yamen(GV 15), Fengfu(GV 16), Baihui(GV 20), Shuigou(GV 26) and Hegu(LI 4) acupoints was performed on the TBI rats. After 3 consecutive days of acupuncture treatment, we investigated signal molecules, receptors and microglia related to neuroinflammation in brain tissue of the TBI rats and analyzed the possi-ble mechanism underlying the effect of acupuncture on neuroinflammation.RESULTS: After the acupuncture treatment, ionized calcium binding adaptor molecule 1(Iba1), a protein specific to microglia, was investigated. In the cortical layer of damaged brain tissue in TBI rats,the Iba1-positive area was 3.3% ± 0.9% in the rats that received acupuncture compared with 5.2% ±1.4% in the TBI rats that did not receive acupuncture, and the microglia were smaller with more slender protrusions in the acupuncture-treated rats.This result indicates that acupuncture can significantly reduce microglia activation in TBI rats. A possible mechanism for this effect is that acupuncture reduces the expression of autotaxin and lysophosphatidic acid. Together, these constitute the autotaxin-lysophosphatidic acid axis, which induces microglial activation in the brains of TBI rats. Acupuncture treatment may downregulate the expression of Lysophosphatidic acid(LPA) receptor(LPAR) 1 and LPAR2 on the microglial cytomembrane, which affects the microglia activation process.CONCLUSION: Acupuncture stimulating the Yamen(GV 15), Fengfu(GV 16), Baihui(GV 20),Shuigou(GV 26) and Hegu(LI 4) acupoints can effectively inhibit the development of neuroinflammation after TBI. One possible mechanism for this effect is that acupuncture downregulates LPA synthesis and affects the LPA-LPAR pathway by inhibiting LPAR1 and LPAR2, thereby inhibiting microglial activation and reducing neuroinflammation. | Lin Shujun Zhu Mingmin Chen Weihao Zhang Yujuan Lin Jihuan Pu Liu Chen Shulian Zhang Yimin Liu Xin | 2020 | Journal of Traditional Chinese Medicine2020，40，2： | 3 |
| 10 | Statistical Characteristics Analysis of Transient Disturbances in High-power Catenary System显示文摘 | YANG Zhichao SHAN Qin WU Peng ZHAO Mingmin | 2013 | 高电压技术2013，39，10： | 3 |
| 11 | Preparation and application of iron oxide/persimmon tannin/graphene oxide nanocomposites for efficient adsorption of erbium from aqueous solution显示文摘Rare earth elements(REEs)are used for the developme nt of new energy materials owing to their intrinsic physicochemical property.However,excess REEs in water threaten the safety of animals,plants and humans.An efficient way to separate REEs from the water is therefore needed.In this study,a biosorbent consisting of iron oxide(Fe3 O4),persimmon tannin(PT),and graphene oxide(GO)as Fe3 O4/PT/GO was prepared,and the adsorption of trivalent erbium(Er3+)ions from aqueous solution was investigated.The adsorption process for Er3+ions conforms to pseudo-second order kinetic and the Langmuir isotherm model behavior.Thermodynamic studies indicate that the adsorption process is spontaneous and endothermic.Scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS),X-ray diffraction(XRD),thermogravimetric analysis(TGA).Fourier-transform infrared(FT-IR)spectroscopy;Brunauer-Emmett-Teller(BET)analysis,and vibrating sample magnetometer(VSM)were used to assess the adsorption mechanism of Er3+ions onto the Fe3 O4/PT/GO biosorbent.A combination of electrostatic interactions,redox reactivity and chelation are responsible for adsorption of Er3+ions on the Fe3 O4/PT/GO biosorbent,The magnetic Fe3 O4/PT/GO biosorbent can be easily separated under the magnetic field for effective recycle of Er3+ions from aqueous solution.Therefore,this new biomass composite holds great promise for wastewater treatment. | Lin Gao Zhongmin Wang Chaoke Qin Zhenming Chen Mingmin Gao Na He Xi Qian Zhide Zhou Guiyin Li | 2020 | Journal of Rare Earths2020，38，12： | 3 |
| 12 | Multi-view based neural network for semantic segmentation on 3D scenes显示文摘Dear editor,For semantic segmentation tasks,convolutional neural net work(CNN)based methods have been prevalent for both 2D image semantic segmentation and 3D semantic segmentation.Though traditional methods often use local features to segment a target(For example,in[1]both 2D local features and 3D local features are used to boost recognition ability),CNN based methods[2,3]exhibit much better performance than traditional methods[4].In all the CNN based methods on images,fully convolutional networks(FCNs)[2]are firstly proposed for end-to-end training.Basically,all the following methods are the variants of FCNs.For 3D input,some studies leverage 3D convolution to predict dense 3D semantic voxel maps[5].However,3D convolution has the limitation of low resolution as the GPU memory constraint.Additionally,RGB information is not well considered though it is very important.As semantic segmentation on images has been very good,we can project the semantic segmentation results of images to 3D mesh based on the geometrie relationship.In this study,we mainly exploit the multi-view based neural network for semantic segmentation on 3D scenes. | Yonghua LU Mingmin ZHEN Tian FANG | 2019 | Science China(Information Sciences)2019，62，12： | 3 |
| 13 | Methane retrieval from Atmospheric Infrared Sounder using EOF-based regression algorithm and its validation显示文摘This paper presents a rapid regression algorithm for the retrieval of methane(CH4)profile from Atmospheric Infrared Sounder(AIRS)based on empirical orthogonal functions(EOF)and its validation.This algorithm was trained using the simulated radiance from an assemble of atmospheric profiles and can be utilized to derive the CH4profile rapidly with the input of the AIRS cloud-clear radiance.Validation using hundreds of aircraft profiles demonstrates that the root mean square error(RMSE)is about 1.5%in the AIRS sensitive region of359–596 hPa,which is smaller than AIRS-V5 product(except in high latitudes).Comparison with the groundbased solar Fourier transform spectrometry observations showed that the RMSE of the retrieved CH4total column amount is less than 3%.This EOF-based regression method can be easily applied to other thermal infrared sounders for deriving CH4and some other gases,and the derived profiles can be used as the first guess for further physical retrieval. | Ying Zhang Xiaozhen Xiong Jinhua Tao Chao Yu Mingmin Zou Lin Su Liangfu Chen | 2014 | Chinese Science Bulletin2014，59，14： | 3 |
| 14 | Bayesian network learning algorithm based on unconstrained optimization and ant colony optimization显示文摘Structure learning of Bayesian networks is a wellresearched but computationally hard task.For learning Bayesian networks,this paper proposes an improved algorithm based on unconstrained optimization and ant colony optimization(U-ACO-B) to solve the drawbacks of the ant colony optimization(ACO-B).In this algorithm,firstly,an unconstrained optimization problem is solved to obtain an undirected skeleton,and then the ACO algorithm is used to orientate the edges,thus returning the final structure.In the experimental part of the paper,we compare the performance of the proposed algorithm with ACO-B algorithm.The experimental results show that our method is effective and greatly enhance convergence speed than ACO-B algorithm. | Chunfeng Wang Sanyang Liu Mingmin Zhu | 2012 | Journal of Systems Engineering and Electronics2012，23，5： | 3 |
| 15 | Steady-State Cornering Properties of a Non-pneumatic Tire with Mechanical Elastic Structure显示文摘Mechanical elastic wheel(ME-wheel)is a new type of non-inflatable safety tyre,and the structure is significantly different from traditional pneumatic tyre.In order to investigate cornering properties of ME-wheel,experimental research on mechanics characteristics of ME-wheel under steady-state cornering conditions are carried out.The test of steady-state cornering properties of ME-wheel at different experimental parameter conditions is conducted by test bench for dynamic mechanical properties of tyre.Cornering property curves are used to analyze the steady-state cornering properties of ME-wheel,namely the variation tendency of lateral force or aligning torque with the increase of side-slip angle.Moreover,evaluation indexes for cornering properties of ME-wheel are extracted and the effect of different experimental parameters(including vertical load,friction coefficient,and speed)on cornering properties of ME-wheel is contrastively analyzed.The proposed research can provide certain reference to facilitate structure parameters and cornering properties optimizing process of ME-wheel. | Fu Hongxun Zhao Youqun Lin Fen Du Xianbin Zhu Mingmin | 2017 | Transactions of Nanjing University of Aeronautics and Astronautics2017，34，5： | 2 |
| 16 | 肺肿瘤位置和尺寸对正常肺组织剂量学参数影响的体模研究(英文)显示文摘Objective:The aim of the study was to study the effect of the size and location of tumors on the normal lung dose-volume parameters for lung cancer.Methods:Three spheres with diameters of 2, 3 and 4 cm made of tissue-equivalent materials used for simulating tumors were inserted into the upper lobe, middle lobe, lower lobe of the right lung, upper lobe, lower lobe of the left lung of the Rando phantom, respectively.Five-field simplified IMRT(sIMRT) planning were designed.The prescribed dose was 60 Gy/2 Gy/30 f, 99% of the planning target volume received this dose.Dose-volume parameters of normal lung tissues including relative volume of lung receiving ≥ 5, 10, 20, 30 and 50 Gy(V5, V10, V20, V30, V50), and mean lung dose(MLD) were analyzed and compared.Results:For the dose-volume parameters, the diameter and the position of the tumor had a significant effect(P < 0.05).With the diameter expanding from 2 to 3 cm, the parameters associated with tumor lying in various lobes increased by a range between 3.83%-125.38%, while the parameters linked with tumors on different lobes increased by a range between 10.46%-51.46% with the diameter expanding from 3 to 4 cm.Conclusion:Location and size of sphere-like tumor have an obvious effect on dose-volume parameters.Knowing about the degree of influence will help oncologists and physicists better evaluate treatment planning, then the probability of radiation pneumonitis can be reduced. | Fuli Zhang Mingmin Zheng Jinbao Zhang Jianping Chen Weidong Xu Junmao Gao | 2010 | The Chinese-German Journal of Clinical Oncology2010，9，3： | 2 |
| 17 | Cued search algorithm with uncertain detection performance for phased array radars显示文摘A cued search algorithm with uncertain detection performance is proposed for phased array radars.Firstly,a target search model based on the information gain criterion is presented with known detection performance,and the statistical characteristic of the detection probability is calculated by using the fluctuant model of the target radar cross section (RCS).Secondly,when the detection probability is completely unknown,its probability density function is modeled with a beta distribution,and its posterior probability distribution with the radar observation is derived based on the Bayesian theory.Finally simulation results show that the cued search algorithm with a known RCS fluctuant model can achieve the best performance,and the algorithm with the detection probability modeled as a beta distribution is better than that with a random selected detection probability because the model parameters can be updated by the radar observation to approach to the real value of the detection probability. | Jianbin Lu Hui Xiao Zemin Xi Mingmin Zhang | 2013 | Journal of Systems Engineering and Electronics2013，24，6： | 2 |
| 18 | A Practical Process for the Synthesis of Translocator Protein 18kDa Imidazopyridine Ligand显示文摘In this article, an effective feasible method to synthesize translocator protein 18kDa(TSPO) imidazopyridine ligand 7 is discussed. A new procedure for the synthesis of the key intermediate 17 has been developed in four steps(condensation, diazo reaction, hydrolysis, amidation) from 2-aminopyridine 18. The overall yield was increased from 18% to 31.6%. One of the key steps is using activated copper powder as a catalyst in several cycles. Finally, reduction of 17 with Zn dust completed the synthesis of TSPO imidazopyridine ligand 7 in 86% yield. | WEN Meng QU Chunrong SU Xinhui DING Mingmin DENG Zixin HONG Xuechuan | 2014 | Wuhan University Journal of Natural Sciences2014，19，1： | 2 |
| 19 | Accuracy analysis of PPDF-based method to parameterize aerosol scattering effect显示文摘We introduce the path length probability density function(PPDF) method, which is based on an equivalence theorem and parameterizes the aerosol scattering effect by adding four factors to the atmospheric transmittance model. Using simulated observations in the O2-A band, we examined the utility of the PPDF-based method to account for the aerosol scattering effect. First, observations were simulated using a forward model under different aerosol conditions; PPDF factors were then retrieved using an optimal estimation method; PPDF factors were used to reconstruct the observations; and finally, simulated true observations and reconstructions were compared. Analysis of the difference between the true observations and reconstructions confirmed the utility of the PPDF-based method. Additionally, the O2 band was demonstrated to be an efficient observing band for assisting the remote sensing of atmospheric trace gases in the near-infrared band. | ZOU MingMin CHEN LiangFu TAO JinHua SU Lin FAN Meng ZHANG Ying HAN Dong | 2014 | Science China Earth Sciences2014，57，8： | 2 |
| 20 | Changes in zooplankton community structure in Sanmen Bay,China显示文摘Seasonal variations in zooplankton abundance,biomass,species diversity and community structure were investigated in the Sanmen Bay,China.Samples were collected from 15 stations,on the seasonal basis,in April(spring),July(summer) and October 2005(autumn) and January 2006(winter),respectively.The results show that zooplankton species number,abundance and biomass varied widely and had distinct spatial heterogeneity in the Sanmen Bay.A total of 72 species of zooplankton belonging to 56 genera and 17 groups of pelagic larvae were identified.The zooplankton species richness was strongly related to salinity.Based on hierarchical cluster analysis,zooplankton in this study area were classified into three groups:coastal,neritic and pelagic groups,which corresponded to the upper,middle and lower portion of the Sanmen Bay,respectively.The coastal low-saline species were dominant in the study area.The zooplankton abundance and biomass reached a peak in summer,moderate in spring and autumn,and the lowest in winter.Zooplankton abundance decreased from the upper to lower portion of the bay in April,when the highest biomass occurred in the middle portion of the bay.There were the same spatial distribution patterns for the biomass and abundance in July,with the maximum in the middle of the bay.However,zooplankton abundance was the highest in the middle of the bay in October,when maximum biomass occurred near the lower of the bay.Zooplankton abundance and biomass were evenly distributed in the Sanmen Bay in January.Spatial and temporal variations in zooplankton and their relationship with environmental factors were also analyzed.The BIOENV results indicate that the combination of chlorophyll a(Chl-a),salinity,dissolved inorganic nitrogen(DIN),dissolved oxygen(DO) and silicate(SiO3) was responsible for the variations in zooplankton community structure in the Sanmen Bay.The environmental changes played an important role in changes in the zooplankton community structure in the Sanmen Bay. | LIU Zhensheng ZHANG Zhinan WANG Chunsheng JIN Haiyan DU Mingmin ZHANG Dongsheng | 2012 | Acta Oceanologica Sinica2012，31，6： | 2 |
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