|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | The enhanced X-ray Timing and Polarimetry mission—eXTP显示文摘In this paper we present the enhanced X-ray Timing and Polarimetry mission—eXTP. eXTP is a space science mission designed to study fundamental physics under extreme conditions of density, gravity and magnetism. The mission aims at determining the equation of state of matter at supra-nuclear density, measuring effects of QED, and understanding the dynamics of matter in strong-field gravity. In addition to investigating fundamental physics, eXTP will be a very powerful observatory for astrophysics that will provide observations of unprecedented quality on a variety of galactic and extragalactic objects. In particular, its wide field monitoring capabilities will be highly instrumental to detect the electro-magnetic counterparts of gravitational wave sources.The paper provides a detailed description of:(1) the technological and technical aspects, and the expected performance of the instruments of the scientific payload;(2) the elements and functions of the mission, from the spacecraft to the ground segment. | ShuangNan Zhang Andrea Santangelo Marco Feroci YuPeng Xu FangJun Lu Yong Chen Hua Feng Shu Zhang Sφren Brandt Margarita Hernanz Luca Baldini Enrico Bozzo Riccardo Campana Alessandra De Rosa YongWei Dong Yuri Evangelista Vladimir Karas Norbert Meidinger Aline Meuris Kirpal Nandra Teng Pan Giovanni Pareschi Piotr Orleanski QiuShi Huang Stephane Schanne Giorgia Sironi Daniele Spiga Jiri Svoboda Gianpiero Tagliaferri Christoph Tenzer Andrea Vacchi Silvia Zane Dave Walton ZhanShan Wang Berend Winter Xin Wu Jean J.M.in't Zand Mahdi Ahangarianabhari Giovanni Ambrosi Filippo Ambrosino Marco Barbera Stefano Basso Jörg Bayer Ronaldo Bellazzini Pierluigi Bellutti Bruna Bertucci Giuseppe Bertuccio Giacomo Borghi XueLei Cao Franck Cadoux Francesco Ceraudo TianXiang Chen Yu Peng Chen Jerome Chevenez Marta Civitani Wei Cui WeiWei Cui Thomas Dauser Ettore Del Monte Sergio Di Cosimo Sebastian Diebold Victor Doroshenko Michal Dovciak YuanYuan Du Lorenzo Ducci QingMei Fan Yannick Favre Fabio Fuschino JoséLuis Ga'lvez Min Gao MingYu Ge Olivier Gevin Marco Grassi QuanYing Gu YuDong Gu DaWei Han Bin Hong Wei Hu Long Ji ShuMei Jia WeiChun Jiang Thomas Kennedy Ingo Kreykenbohm Irfan Kuvvetli Claudio Labanti Luca Latronico Gang Li MaoShun Li Xian Li Wei Li ZhengWei Li Olivier Limousin HongWei Liu XiaoJing Liu Bo Lu Tao Luo Daniele Macera Piero Malcovati Adrian Martindale Malgorzata Michalska Bin Meng Massimo Minuti Alfredo Morbidini Fabio Muleri Stephane Paltani Emanuele Perinati Antonino Picciotto Claudio Piemonte JinLu Qu Alexandre Rachevski Irina Rashevskaya Jerome Rodriguez Thomas Schanz ZhengXiang Shen LiZhi Sheng JiangBo Song LiMing Song Carmelo Sgro Liang Sun Ying Tan Phil Uttley Bo Wang DianLong Wang GuoFeng Wang Juan Wang LangPing Wang YuSa Wang Anna L.Watts XiangYang Wen Jörn Wilms ShaoLin Xiong JiaWei Yang Sheng Yang YanJi Yang Nian Yu WenDa Zhang Gianluigi Zampa Nicola Zampa Andrzej A.Zdziarski AiMei Zhang ChengMo Zhang Fan Zhang Long Zhang Tong Zhang Yi Zhang XiaoLi Zhang ZiLiang Zhang BaoSheng Zhao ShiJie Zheng Yu Peng Zhou Nicola Zorzi J.Frans Zwart | 2019 | Science China(Physics,Mechanics & Astronomy)2019，62，2： | 11 |
| 2 | The Belt and Road:Geographical pattern and regional risks显示文摘Building the Belt and Road is initiatives of China to promote win-win international cooperation in the new era,aiming at green,health,intellect and peace and the joint developme nt with people of the coun tries along the route.Systematic an alysis on envir on mental characteristics,evolutionary tendency and future risks are certainly the scie ntific fun dame ntals of sustainable development for the Belt and Road construction.Applied remote sensing monitoring,statistical analysis,this paper investigates the regional characteristics of climate,topography,soil,hydrology,vegetation cover and terrestrial ecosystems production,as well as socio-economic conditions.Based on the regional characteristics,the Belt and Road is divided into 9 sub-regions:Central and Eastern Europe sub-region with cold and humid climate,Mongolia and Russia sub-region with cold and arid climate,Central and West Asia arid sub-region,Southeast Asia sub-region with warm and humid climate,Pakistan arid sub-region,Bangladesh-India-Myanmar sub-region with warm and humid climate,Eastern China monsoon sub-region,Northwest China arid sub-region and Tibetan Plateau sub-region.Combining modeling simulation with seenario projections,natural disaster assessment methodology is used to assess the risk of extreme events including heat waves,droughts and floods in the coming 30 years(2021-2050).Results show that,on the basis of the regional framework,the western Eurasia would be a warming trend;both sides of Qinghai-Tibet Plateau in high temperature and heat waves risk;Central and Eastern Europe sub-region with cold and humid climate in high drought risk;Bangladesh-lndia-Myanmar sub-region with warm and humid climate as well as Eastern China in high risk of flooding. | WU Shaohong LIU Lulu LIU Yanhua GAO Jiangbo DAI Erfu FENG Aiqing WANG Wentao | 2019 | Journal of Geographical Sciences2019，29，4： | 11 |
| 3 | FEM analysis of large thermo-deflection of strips being processed in a continuous annealing furnace显示文摘No matter what the flatness of a strip is, flat or defective, at an annealing furnace entrance, the strip can not keep its origi- nal shape and a remarkable change of its shape can be seen at the annealing furnace exit. By investigating this phenomenon at the 2030 mm continuous annealing line which belonged to Baosteel, a finite element model of thermo-mechanical buckling deformation of strips in a continuous annealing furnace were established, and the mechanism of flatness changing and the contributing factors were researched by the finite element software ANSYS. | Jiangbo Dai Qingdong Zhang Tiezhu Chang | 2007 | Journal of University of Science and Technology Beijing2007，14，6： | 10 |
| 4 | Modes of Occurrence and Cleaning Potential of Trace Elements in Coals from the Northern Ordos Basin and Shanxi Province, China显示文摘Based on the analyses of 43 elements in 16 samples of the raw coal and feed coal collected from the northern Ordos basin and Shanxi Province, the modes of occurrence of these elements were studied using the method of cluster analysis and factor analysis, and the cleaning potential of the hazardous elements relatively enriched in the coals was discussed by analyzing six samples of the cleaned coal from the coal-washing plants and coal cleaning simulation experiments. The results shows that the elements Br and Ba show a strong affinity to the organic matter, Cs, Cd, Pb, Zn and Hg partly to the organic matter, and the other trace elements are mainly associated with the mineral matter. Cs, Mo, P, Pb,Zn and S have positive correlations with the two principal factors, reflecting the complexity of their modes of occurrence.Some elements that were thought to show a faint relationship (Be with S and Sb with carbonates) in other rocks are found to have a strong interrelation in the coals. Clay minerals (mainly kaolinite) dominate in the coals, and Ta, Th, Ti, Sc, REE,Hf, U, Se, W, V, Nb, Mo, Al, P, Cr, Pb and Zn are distributed mostly in kaolinite, while K, Rb, Cs, and Na have much to do with illite. Conventional cleaning can reduce the concentrations of most hazardous elements in various degrees. The hazardous elements S, As, Sb, Se, Mo, Pb, Cd and Hg relatively enriched in some coals from the area studied have a relatively high potential of environmental risks. However, by physical coal cleaning processes, more than 60% of As and Hg were removed, showing a high degree of removal, more than 30% of Sb, as well as S, Pb and Cd partly associated with the inorganic matter were removed. Se and Mo showing a relatively low degree of removal could be further removed by deep crushing of the coal during physical cleaning processes, and the concentrations of S, Pb, Cd and Hg with a partial association with the organic matter could be decreased in such ways as the coal blending. Cluster analysis together with factor analysis is a rapid and effective way to deduce the mode of occurrence of an element from bulk samples, and the removability data of most hazardous elements are basically consistent with their modes of occurrence suggested, which indicates that the statistical analysis could predict the cleaning potential of hazardous elements during the physical coal cleaning. | WANGWenfeng QINYong JIANGBo FUXuehai | 2004 | Acta Geologica Sinica(English Edition)2004，78，4： | 9 |
| 5 | Applicability of five models to simulate water infiltration into soil with added biochar显示文摘As a soil amendment, biochar can reduce soil bulk density, increase soil porosity, and alter soil aggregates and thus affect the infiltration. Researchers have proposed and revised several theoretical models to describe the process of soil infiltration. Although these models have been successfully used to evaluate the soil infiltration in different scenarios in agricultural fields, little effort has been devoted to assess their performances in arid and semi-arid soils after the addition of biochar. A laboratory experiment was performed to study the infiltration characteristics of two typical Loess Plateau soils at three particle sizes(2–1, 1–0.25, and <0.25 mm) and five biochar application amounts(0, 10, 50, 100, and 150 g/kg). The performance of five models(i.e., the Philip model, Kostiakov model, Mezencev model, USDA-NRCS model, and Horton model) in simulating the infiltration process was then evaluated based on the adjusted coefficient of determination and a reduced Chi-Square test. Results indicated that the Horton model best simulated the water-infiltration process in an aeolian sandy soil with added biochar. However, the Mezencev model best simulated the infiltration process in a loamy clay soil(Eum-Orthic Anthrosol). The three-parameter model, i.e., Mezencev and Horton models can better describe the relationship between cumulative infiltration and infiltration time. In conclusion, biochar reduced the soil infiltration capacity of the aeolian sandy soil and increased that of the Eum-Orthic Anthrosol. | WANG Tongtong Catherine E STEWART MA Jiangbo ZHENG Jiyong ZHANG Xingchang | 2017 | Journal of Arid Land2017，9，5： | 9 |
| 6 | OsELF3-2, an Ortholog of Arabidopsis ELF3, Interacts with the E3 Ligase APIP6 and Negatively Regulates Immunity against Magnaporthe oryzae in Rice显示文摘Dear Editor, The ubiquitin proteasome system (UPS) is a highly regulated mechanism of intracellular protein degradation in eukaryotes.The UPS comprises three key enzymes:ubiquitin-activating enzyme E1,ubiquitin-conjugating enzyme E2,and ubiquitin ligase enzyme E3.There are nearly 1500 E3 ligase genes in rice and Arabidopsis genomes that target substrates for many biological processes for plant growth and tolerance to abiotic and biotic stresses. | Yuese Ning Xuetao Shi Ruyi Wang Jiangbo Fan Chan Ho Park Chongyang Zhang Ting Zhang Xinhao Ouyang Shigui Li Guo-Liang Wang | 2015 | Molecular Plant2015，8，11： | 8 |
| 7 | Enhanced Cadmium Accumulation in Transgenic Tobacco Expressing the Phytochelatin Synthase Gene of Cynodon dactylon L显示文摘Bermudagrass (L 上的 Cynodon 扬抑抑格。cv。Goldensun ) 对高度抵抗并且积累大量镉(Cd ) 。phytochelatin synthase (PCS ) cDNA (CdPCSI ) 被 cDNA 结束的快速的扩大从这棵草孤立。通常认为的 CdPCSI 蛋白质从另外的植物与 PCS 分享了高相同,与在 N 终端的 79% 相同和在 theC 终端的 47% 相同。然而, 16 Cys 残余在 CdPCS1 的 C 终端被发现,并且在这些残余之中,三个位置与另外的 PCS 蛋白质不同。Semiquantitative reversetranscription 聚合酶链反应分析证明 Cd 应力在 Bermudagrass 在根和叶子导致了 CdPCSI 表示。我们证实 CdPCSI 由在 ABDE1 表示基因在酵母房间在 Cdtolerance 起一个重要作用, Cd 敏感的异种。CdPCSI 然后被介绍进烟草植物。在某转基因的烟草的 phytochelatin 水平在野生型植物非常衬里 increased3.88 褶层,在这些转基因的植物的 Cd 累积因此是 enhanced3.21 褶层。结果建议 CdPCSI 以后能为植物救治被用作一个基因要素。 | Jiangchuan Li Jiangbo Guo Wenzhong Xu Mi Ma | 2006 | Journal of Integrative Plant Biology2006，48，8： | 8 |
| 8 | Sustainable development of coal cities in Heilongjiang province based on AHP method显示文摘The sustainable development of coal mining cities in Heilongjiang province has important effect on the economic stability and development of Heilongjiang, Northeast China, and China at large. To further the sustainable development evaluation system of coal mining cities in Heilongjiang province, based on the analytic hierarchy process (AHP) method combined with operational and scientific principles using Saaty's 1-9 scale method to construct the judgment matrix from five aspects, such as economic development and environmental quality, this paper establishes the comprehensive evaluation index system of sustainable development of coal mining cities in Heilongjiang province, including comprehensive index of industrial economic benefits and the contribution rate of science and technology. In addition, using fuzzy comprehensive evaluation method, a comprehensive evaluation is made on the indices of the four major coal mining cities of Heilongjiang. The result shows that the coal mining cities are not better than Datong of Shanxi province in many indices. The economic development and environment quality are the most important indices of the targeted layer influencing the sustainable development of coal mining cities of Heilongjiang, and their index weights are 0.4358 and 0.2844, respectively. These two indices including comprehensive index of industrial economic benefit and the ratio of environmental protection investment to GDP are the key elements influencing the two aspects. | Zhang Yupu Sun Yongbo Qin Jiangbo | 2012 | International Journal of Mining Science and Technology2012，22，1： | 7 |
| 9 | Formulation of a new ocean salinity boundary condition and impact on the simulated climate of an oceanic general circulation model显示文摘The salinity boundary condition at the ocean surface plays an important role in the stability of long-term integrations of an oceanic general circulation model(OGCM) and in determining its equilibrium solutions.This study presents a new formulation of the salt flux calculation at the ocean surface based on physical processes of salt exchange at the air-sea interface.The formulation improves the commonly used virtual salt flux with constant reference salinity by allowing for spatial correlations between surface freshwater flux and sea-surface salinity while preserving the conservation of global salinity.The new boundary condition is implemented in the latest version of the National Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics/Institute of Atmospheric Physics Climate Ocean Model version 2(LICOM2.0).The impact of the new boundary condition on the equilibrium simulations of the model is presented.It is shown that the new formulation leads to a stronger Atlantic meridional overturning circulation(AMOC) that is closer to observational estimates.It also slightly improves poleward heat transport by the oceans in both the Atlantic and the global oceans. | JIN JiangBo ZENG QingCun WU Lin LIU HaiLong ZHANG MingHua | 2017 | Science China Earth Sciences2017，60，3： | 7 |
| 10 | Five-wavelength optical-resolution photoacoustic microscopy of blood and lymphatic vessels显示文摘Optical-resolution photoacoustic microscopy(OR-PAM)has been developed for anatomical,functional,and molecular imaging but usually requires multiple scanning for different contrasts.We present five-wavelength OR-PAM for simultaneous imaging of hemoglobin concentration,oxygen saturation,blood flow speed,and lymphatic vessels in single raster scanning.We develop a five-wavelength pulsed laser via stimulated Raman scattering.The five pulsed wavelengths,i.e.,532,545,558,570,and 620∕640 nm,are temporally separated by several hundreds of nanoseconds via different optical delays in fiber.Five photoacoustic images at these wavelengths are simultaneously acquired in a single scanning.The 532-and 620∕640-nm wavelengths are used to image the blood vessels and dye-labeled lymphatic vessels.The blood flow speed is measured by a dual-pulse method.The oxygen saturation is calculated and compensated for by the Grüneisen-relaxation effect.In vivo imaging of hemoglobin concentration,oxygen saturation,blood flow speed,and lymphatic vessels is demonstrated in preclinical applications of cancer detection,lymphatic clearance monitoring,and functional brain imaging. | Chao Liu Jiangbo Chen Yachao Zhang Jingyi Zhu Lidai Wang | 2021 | Advanced Photonics2021，3，1： | 7 |
| 11 | Recent advances in emerging techniques for non-destructive detection of seed viability: A review显示文摘Over the past decades,imaging and spectroscopy techniques have been developed rapidly with widespread applications in non-destructive agro-food quality determination.Seeds are one of themost fundamental elements of agriculture and forestry.Seed viability is of great significance in seed quality characteristics reflecting potential seed germination,and there is a great need for a quick and effective method to determine the germination condition and viability of seeds prior to cultivate,sale and plant.Some researches based on spectra and/or image processing and analysis have been explored in terms of the external and internal quality of a variety of seeds.Many attempts have been made in image segmentation and spectra correction methods to predict seed quality using various traditional and novel methods.This review focuses on the comparative introduction,development and applications of emerging techniques in the analysis of seed viability,in particular,near infrared spectroscopy,hyperspectral and multispectral imaging,Raman spectroscopy,infrared thermography,and soft X-ray imaging methods.The basic theories,principle components,relative chemometric processing,analytical methods and prediction accuracies are reported and compared.Additionally,on the foundation of the observed applications,the technical challenges and future outlook for these emerging techniques are also discussed. | Yu Xia Yunfei Xu Jiangbo Li Chi Zhang Shuxiang Fan | 2019 | Artificial Intelligence in Agriculture2019，，1： | 7 |
| 12 | Plasma Nesfatin-1 concentration and its correlation with HPA axis in depression model rats显示文摘Objective To explore plasma Nesfatin-1 concentration and its correlation with hypothalamic pituitary adrenal(HPA) axis in depression model rats. Methods Twelve SD rats were randomly divided into normal control group(NCG) and depression model group(DMG). DMG received 5 consecutive weeks of 7 different chronic unpredictable mild stress(CUMS). The behavior of rats was evaluated by an open field test,sucrose preference test,and forced swimming test(FST). The concentration of plasma corticosterone and Nesfatin-1 were measured with an enzyme-linked immuno-sorbent assay(ELISA). Results Compared with NCG,DMG had a lower weight gain,lower index of sucrose preference and spent longer time being immobile in FST while all of these differences were statistically significant(P<0.05). The plasma concentrations of corticosterone and Nesfatin-1 were significantly higher in DMG than in theN CG(P<0.05). The plasma concentration of Nesfatin-1in DMG was positively correlated with the plasma corticosterone concentration. Conclusion CUMS could induce depression-like behavior in rats and increase the plasma concentration of Nesfatin-1 and corticosterone,while the HPA axis hyperactivity induced by CUMS may be associated with the increased concentration of Nesfatin-1. | WANG Gaohua WU Shengjuan WANG Huiling Wei Yanyan Gao Guoqing Li Jiangbo | 2016 | 国际精神病学杂志2016，43，3： | 6 |
| 13 | Tear Resistance of Orthogonal Kevlar-PWF-reinforced TPU Film显示文摘This work seeks to investigate the notch sensitivity and fracture behaviour of orthogonal Kevlar-plain woven fabric (PWF)-reinforced thermoplastic polyurethanes (TPU) film applied to high altitude balloon. Four types of specimens are implemented to measure notched strength and fracture toughness by conducting static tension and tear tests on an MTS system respectively. The damage and failure mechanisms are discussed and the results for notched strength and tear resistance are evaluated and compared with each other. From the experiments, it is found that the notch sensitivity of the film increases with the increase in the size of the hole, but the notch sensitivity and the stress concentration of the notch are insignificant and there is a decrease of only about 4%-10% in tensile strength for the notched specimens with different hole sizes in diameter compared with the unnotched specimen. In contrast, the tear resistance containing a central slit with only 1 mm length is about half of tensile strength of the unnotched film, which implies that the tear resistance exists an significant notch sensitivity. The results of this study provide an insight into notch sensitivity and fracture behaviour of the Kevlar-PWF-reinforced TPU film and constitute a fundamental basis for the design of high altitude balloon. | BAI Jiangbo XIONG Junjiang CHENG Xu | 2011 | Chinese Journal of Aeronautics2011，24，1： | 6 |
| 14 | Stability of weak solutions to climate dynamics model with effects of topography and non-constant external force显示文摘In this paper, a climate dynamics model with the effects of topography and a non-constant external force, which consists of the Navier-Stokes equations and a temperature equation arising from the evolution process of the atmosphere, was considered.Under certain assumptions imposed on the initial data and by using some delicate estimates and compactness arguments, we proved the L^1-stability of weak solutions to the atmospheric equations. | LIAN RuXu ZENG QingCun JIN JiangBo | 2018 | Science China Earth Sciences2018，61，1： | 6 |
| 15 | Three-dimensional conformal intensity-modulated radiation therapy of left femur foci does not damage the sciatic nerve显示文摘During radiotherapy to kill femoral hydatid tapeworms,the sciatic nerve surrounding the focus can be easily damaged by the treatment.Thus,it is very important to evaluate the effects of radiotherapy on the surrounding nervous tissue.In the present study,we used three-dimensional,conformal,intensity-modulated radiation therapy to treat bilateral femoral hydatid disease in Meriones meridiani.The focus of the hydatid disease on the left femur was subjected to radiotherapy(40 Gy) for 14 days,and the right femur received sham irradiation.Hematoxylin-eosin staining,electron microscopy,and terminal deoxynucleotidyl transferase-d UTP nick end labeling assays on the left femurs showed that the left sciatic nerve cell structure was normal,with no obvious apoptosis after radiation.Trypan blue staining demonstrated that the overall protoscolex structure in bone parasitized with Echinococcus granulosus disappeared in the left femur of the animals after treatment.The mortality of the protoscolex was higher in the left side than in the right side.The succinate dehydrogenase activity in the protoscolex in bone parasitized with Echinococcus granulosus was lower in the left femur than in the right femur.These results suggest that three-dimensional conformal intensity-modulated radiation therapy achieves good therapeutic effects on the secondary bone in hydatid disease in Meriones meridiani without damaging the morphology or function of the sciatic nerve. | Wanlong Xu Xibin Zhao Qing Wang Jungang Sun Jiangbo Xu Wenzheng Zhou Hao Wang Shigui Yan Hong Yuan | 2014 | Neural Regeneration Research2014，9，20： | 6 |
| 16 | Analytical Solutions for Predicting Tensile and Shear Moduli of Triaxial Weave Fabric Composites显示文摘Novel micromechanical curved beam models were presented for predicting the tensile and shear moduli of triaxial weave fabric(TWF) composites by considering the interactions between the triaxial yarns of 0?and±60?. The triaxial yarns in micromechanical representative unit cell(RUC) were idealized as curved beams with a path depicted using the sinusoidal shape functions, and the tensile and shear moduli of TWF composites were derived by means of the strain energy approach founded on micromechanics. In order to validate the new models, the predictions were compared with the experimental data from literature. It was shown that the predictions from the new model agree well with the experimental results. Using these models, the tensile and shear properties of TWF composites could be predicted based only on the properties of basic woven fabric. | Jiangbo Bai Junjiang Xiong Meng Liu Ziyu Man | 2016 | Acta Mechanica Solida Sinica2016，29，1： | 6 |
| 17 | Characterization of ornidazole metabolites in human bile after intraveneous doses by ultraperformance liquid chromatography/quadrupole time-of-flight mass spectrometry显示文摘Ultraperformance liquid chromatography/quadrupole time-of-flight mass spectrometry(UPLC/Q-TOF MS)was used to characterize ornidazole metabolites in human bile after intravenous doses.A liquid chromatography tandem mass spectrometry(LC–MS/MS)assay was developed for the determination of the bile level of ornidazole.Bile samples,collected from four patients with T-tube drainage after biliary tract surgery,were prepared by protein precipitation with acetonitrile before analysis.A total of 12 metabolites,including 10 novel metabolites,were detected and characterized.The metabolites of ornidazole in human bile were the products of hydrochloride(HCl)elimination,oxidative dechlorination,hydroxylation,sulfation,diastereoisomeric glucuronation,and substitution of NO_(2) or Cl atom by cysteine or N-acetylcysteine,and oxidative dechlorination followed by further carboxylation.The bile levels of ornidazole at 12 h after multiple intravenous infusions were well above its minimal inhibitory concentration for common strains of anaerobic bacteria. | Jiangbo Du Pan Deng Xiaoyan Chen Haidong Wang Tiangeng You Dafang Zhong | 2012 | Acta Pharmaceutica Sinica B2012，2，2： | 5 |
| 18 | The Separate Meter in Separate Meter Out Control System Using Dual Servo Valves Based on Indirect Adaptive Robust Dynamic Surface Control显示文摘Due to the demand for energy efficiency in electro-hydraulic systems, the separate meter in and separate meter out(SMISMO) control system attracts vast attention. In this paper, the SMISMO control system was configured with two servo valves to control the meter in and meter out separately.By designing two of the proposed indirect adaptive robust dynamic surface controllers(IARDSC)for the working-side and off-side system and setting the coupled items as estimated parameters, the SMISMO control system was decoupled into two subsystems completely. Here, indirect adaptive robust control(IARC) was employed to address the internal parameter uncertainties and external disturbances.Dynamic surface control(DSC) was utilized in the backstepping design procedure of IARC to deal with the inherent ‘explosion of terms' problem. As thus, the proposed IARDSC could simplify the design procedure, decrease the computational cost, and achieve an improved control performance in practical use. Finally, experimental results validated the effectiveness of proposed IARDSC and showed that the proposed SMISMO control system could provide a possibility to save more energy. | CHEN Guangrong WANG Junzheng WANG Shoukun ZHAO Jiangbo SHEN Wei | 2019 | Journal of Systems Science & Complexity2019，32，2： | 5 |
| 19 | Porosity and Oxide Layer Dependence of Thermal Shock Behavior of Porous Silicon Nitride Ceramics显示文摘A water-quenching technique has been adopted to evaluate thermal shock fracture and fatigue behaviors of porous Si3N4 ceramics in an air atmosphere. The high-porosity Si3N4 ceramics exhibit a higher strength retention and a better resistance to thermal shock fatigue because of its role of the pores as crack arresters.A dense and coherent surface oxide layer leads to a significant benefit in residual strength during thermal fatigue, however, an increased fatigue number to 30 th cycle cannot cause a further influence although a thicker oxide layer presents, which is attributed to holes defect and disappearance of part intergranular phase. | Xuefeng Lu Yin Wei Hongjie Wang Jiangbo Wen Jun Zhou Jinpeng Fan | 2014 | Journal of Materials Science & Technology2014，30，12： | 5 |
| 20 | Nondestructive determining the soluble solids content of citrus using near infrared transmittance technology combined with the variable selection algorithm显示文摘Nondestructive determination the internal quality of thick-skin fruits has always been a challenge.In order to investigate the prediction ability of full transmittance mode on the soluble solid content(SSC)in thick-skin fruits,the full transmittance spectra of citrus were collected using a visible/near infrared(Vis/NIR)portable spectrograph(550–1100 nm).Three obvious absorption peakswere found at 710,810 and 915 nmin the original spectra curve.Four spectral preprocessing methods including Smoothing,multiplicative scatter correction(MSC),standard normal variate(SNV)and first derivativewere employed to improve the quality of the original spectra.Subsequently,the effective wavelengths of SSC were selected from the original and pretreated spectra with the algorithms of successive projections algorithm(SPA),competitive adaptive reweighted sampling(CARS)and genetic algorithm(GA).Finally,the prediction models of SSC were established based on the full wavelengths and effectivewavelengths.Results showed that SPA performed the best performance on eliminating the useless information variable and optimizing the number of effective variables.The optimal predictionmodel was established based on 10 characteristic variables selected from the spectra pretreated by SNV with the algorithmof SPA,with the correlation coefficient,root mean square error,and residual predictive deviation for prediction set being 0.9165,0.5684°Brix and 2.5120,respectively.Overall,the full transmittance mode was feasible to predict the internal quality of thick-skin fruits,like citrus.Additionally,the combination of spectral preprocessing with a variable selection algorithmwas effective for developing the reliable predictionmodel.The conclusions of this study also provide an alternative method for fast and real-time detection of the internal quality of thick-skin fruits using Vis/NIR spectroscopy. | Xi Tian Jiangbo Li Shilai Yi Guoqiang Jin Xiaoying Qiu Yongjie Li | 2020 | Artificial Intelligence in Agriculture2020，，1： | 5 |
您所在的机构暂未开通此部分的功能，请联系管理员