Wyniki wyszukiwania dla: Junde Wang

Pozycje od 1 do 19 spośród 19 wyników

artykuł

On-line Auxiliary Input Signal Design for Active Fault Detection and Isolation Based on Set-membership and Moving Window Techniques

Jing Wang, Junde Wang, Meng Zhou

International Journal of Control, Automation and Systems > 2019 > 17 > 11 > 2796-2806

This paper presents an on-line auxiliary input signal design strategy based on set-membership and moving window techniques to deal with the problem of active fault detection and isolation. The goal of active fault detection and isolation is to design an auxiliary input signal, such that the nominal system output set and faulty systems output sets are separated each other after injecting the input...

artykuł

Effect of Initial Grain Size on the Dynamic Recrystallization of Hot Deformation for 3003 Aluminum Alloy

Guiqing Chen, Gaosheng Fu, Tianyun Wei, Chaozeng Cheng, więcej

Metals and Materials International > 2018 > 24 > 4 > 711-719

The 3003 aluminum alloys with four different initial grain sizes were deformed by isothermal compression in the range of deformation temperature 300–500 °C at strain rate 0.01–10.0 s⁻¹ with Gleeble-1500 thermal simulator. The results show that the smaller the initial grain size of the alloy, the greater the required deformation resistance, and the smaller the peak strain, which is conducive to the...

artykuł

Development of the Wade equation for the description of elution peak profile by using second-order rate equations for the sorption kinetics

Weiqiang Hao, Bin Di, Qiang Chen, Junde Wang, więcej

Chemical Engineering Research and Design > 2015 > 96 > Complete > 15-22

The Wade equation can be used to account for the peak profiles that are obtained under linear and nonlinear (Langmuir) chromatographic conditions. This equation is derived from a kinetic model of chromatography in which axial dispersion is ignored and the adsorption and desorption of solute between mobile and stationary phase are accounted for by a second-order and a first-order rate equation respectively...

rozdział

Hermetic packaging of Kovar alloy and low-carbon steel structure in hybrid integrated circuit (HIC) system using parallel seam welding process

Junde Wang, Xiaoqi He, Xunping Li, Yunfei En, więcej

2014 Joint IEEE International Symposium on the Applications of Ferroelectric, International Workshop on Acoustic Transduction Materials and Devices & Workshop on Piezoresponse Force Microscopy > 347 - 351

2014 Joint IEEE International Symposium on the Applications of Ferroelectrics, International Workshop on Acoustic Transduction Materials and Devices & Workshop on Piezoresponse Force Microscopy (ISAF/IWATMD/PFM)

This work aims to characterize the microstructure and temperature field of the hermetic packaging structure by welding the cover made of Kovar alloy and the base made of a low-carbon low-alloy steel (i.e., #10 steel) using parallel seam welding (PSW) process. The microstructure of welded joints and distribution of elements were analyzed by scanning electron microscopy (SEM) equipped with energy dispersive...

rozdział

Hermetic packaging of Kovar alloy and low-carbon steel structure in hybrid integrated circuit (HIC) system using parallel seam welding process

Junde Wang, Xiaoqi He, Xunping Li, Yunfei En, więcej

2014 15th International Conference on Electronic Packaging Technology > 347 - 351

2014 15th International Conference on Electronic Packaging Technology (ICEPT)

artykuł

High-resistance controlled yielding supporting technique in deep-well oil shale roadways

Yang Yu, Jianbiao Bai, Xiangyu Wang, Junde Wang, więcej

International Journal of Mining Science and Technology > 2014 > 24 > 2 > 229-236

In order to avoid the deep-well oil shale roadway being deformed, damaged, or difficult to maintain after excavating and supporting in Haishiwan coal mine, this paper has analyzed the characteristics of the deformed roadway and revealed its failure mechanism by taking comprehensively the methods of field geological investigation, displacement monitoring of surrounding rock, rock properties and hydration...

artykuł

Study of the peak variance in isocratic and gradient liquid chromatography using the transport model

Weiqiang Hao, Bin Di, Qiang Chen, Junde Wang, więcej

Journal of Chromatography A > 2013 > 1295 > Complete > 67-81

The expressions accounting for the peak variance in isocratic and gradient liquid chromatography is derived from the transport model. In mathematical treatments, the dwelling time is taken into account, and the type of solvent strength, gradient profile and the variation of plate height (H) with mobile phase composition (φ) is not specified. By applying a coordinate transformation, the transport model...

artykuł

Effect of spectral resolution on the measurement of monoaromatic hydrocarbons by DOAS

Fumin PENG, Pinhua XIE, Yinghua ZHANG, Yanwu ZHU, więcej

Journal of Environmental Sciences > 2008 > 20 > 5 > 632-640

The excellent response characteristics and detection sensitivity with much lower operational cost and the capability to discriminate between the isomer of some monoaromatic hydrocarbons (MAHCs) make differential optical absorption spectroscopy (DOAS) a powerful tool to trace concentration variation of MAHCs. But due to the similarity in chemical structure, those MAHCs have the similar overlapped characteristic...

artykuł

Mass transfer kinetics and breakthrough and elution curves for bovine serum albumin using cibacron blue cellulose membranes

Weiqiang Hao, Junde Wang, Xiangmin Zhang

Journal of Chromatography A > 2006 > 1114 > 1 > 123-131

The mass transfer of bovine serum albumin onto a stack of cibacron blue cellulose membranes in the loading and elution stages were studied. The breakthrough curves obtained in the loading stage were fitted to the pore and the lumped kinetic (LK) models, respectively. Then experimental data obtained in the elution stage were described by using the LK model in which the kinetic equation, the initial...

artykuł

Analysis of Impurities of Bacterium Source of Standard Endotoxin by Gas Chromatography/Mass Spectrometry

Lina YUE, Jinghua LI, Gaohong HE, Wanying YU, więcej

Chinese Journal of Chromatography > 2006 > 24 > 1 > 10-13

In order to analyse the impurity of bacterium source of standard endotoxin, 3-hydroxy fatty acid species in different standard endotoxins was determined by gas chromatography/mass spectrometry (GC/MS) using N,O- bis(trimethylsilyl) trifluoroacetamide as the silanizing reagent. GC/MS analysis was performed using a gas chromatograph equipped with a 60 m ×0.25 mm i.d. DB-5 fused silica capillary column...

artykuł

Evaluation of nonlinear chromatographic performance by frontal analysis using a simple multi-plate mathematical model

Weiqiang Hao, Junde Wang

Journal of Chromatography A > 2005 > 1063 > 1-2 > 47-56

A multi-plate (MP) mathematical model was proposed by frontal analysis to evaluate nonlinear chromatographic performance. One of its advantages is that the parameters may be easily calculated from experimental data. Moreover, there is a good correlation between it and the equilibrium-dispersive (E-D) or Thomas models. This shows that it can well accommodate both types of band broadening that is comprised...

artykuł

Kinetic Study of the Mass Transfer of Bovine Serum Albumin on Cibacron Blue Cellulose Membranes by Using the Multi-Plate and Transport Models

Weiqiang Hao, Junde Wang

Chromatographia > 2005 > 62 > 1-2 > 55-62

The mass transfer kinetics of bovine serum albumin on Cibacron blue F3GA cellulose affinity membranes has been investigated. It was found that the multi-plate (MP) and transport models successfully described experimental breakthrough curves obtained by single-step frontal analysis. The correlation between the two models was used to estimate the rate coefficients of mass transfer from experimental...

artykuł

Preparation and performance of cellulose acetate/polyethyleneimine blend microfiltration membranes and their applications

Zhaoan Chen, Maicun Deng, Yong Chen, Gaohong He, więcej

Journal of Membrane Science > 2004 > 235 > 1-2 > 73-86

A modified microfiltration membrane has been prepared by blending a matrix polymer with a functional polymer. Cellulose acetate (CA) was blended with polyethyleneimine (PEI), which was then crosslinked by polyisocyanate, in a mixture of solvents. In the membrane, PEI can supply coupling sites for ligands in affinity separation or be used as ligands for metal chelating, removal of endotoxin or ion...

artykuł

Modeling, by Frontal Analysis, of the Adsorption of Bovine Serum Albumin on Cibacron Blue-Modified Cellulose Membranes

Weiqiang Hao, Junde Wang, Jinghua Li

Chromatographia > 2004 > 60 > 7-8 > 449-454

The adsorption of bovine serum albumin (BSA) on cibacron blue F3GA cellulose affinity membranes has been studied by frontal analysis. The ideal stirred tank (IST) model, the modified stirred tank (MST) model, and the equilibrium–dispersive (E–D) model were used to describe experimental breakthrough curves. The E–D model was found to best describe the initial region of the breakthrough curve whereas...

artykuł

Membrane cartridges for endotoxin removal from interferon preparations

Jinghua Li, Yingguang Shao, Zhaoan Chen, Runzi Cong, więcej

Journal of Chromatography B > 2003 > 791 > 1-2 > 55-61

The suitability of membrane cartridges for the removal of endotoxin from both distilled water and interferon preparations was examined. The endotoxin concentrations were reduced to 4.0 and 7.3 EU/ml, respectively, when about 4000 ml of distilled water with 20 and 28 EU/ml were passed through the deoxycholate and chitosan immobilized membrane cartridges. When 200 ml of interferon preparation with endotoxin...

artykuł

Cancer de la thyroïde envahissant le médiastin

Yi Wu, Junde Wang, Zhuoying Wang

Chirurgie > 1998 > 123 > 1 > 74-77

Les cancers de la thyroïde qui envahissent le médiastin supérieur sont rares: 24 sur 1 204 cancers opérés au centre anticancéreux de Shanghai (2 %). C'est la raison pour laquelle il nous a paru utile de rapporter cette expérience.Les 24 malades (13 hommes et 11 femmes) avaient un âge moyen de 45 ans. Dix étaient symptomatiques, neuf avaient une masse cervicale palpable, et dans cinq cas, la lésion...

artykuł

Evidence for the adsorption of nitrated polycyclic aromatic hydrocarbons by tree bark

David S. Douce, Malcolm R. Clench, Michael Cooke, Junde Wang

Journal of Chromatography A > 1997 > 786 > 2 > 275-283

It has been previously demonstrated that polycyclic aromatic hydrocarbons (PAH) are adsorbed onto tree bark and that bark may in fact be used as a passive sampler for these compounds. It is now demonstrated that by suitable modification of this methodology nitrated polycyclic aromatic hydrocarbons (nitro-PAH) may also be detected in bark. Bark samples were taken from urban locations in Sheffield,...

artykuł

FTIR Spectroscopy for Trace Gaseous Pollutants in Ambient Air.

Junde Wang, Jianxia Kang, Tianshu Wang

Chinese Science Abstracts Series B > 1995 > 14 > 3 Part B > 14

A review with 48 references is presented on the application of FTI spectroscopy to analyze trace gaseous pollutants in ambient air from the angles of two kinds of long path gas IR absorptions.

artykuł

Study on spectral characterization of infrared flare material combustion with remote high resolution Fourier transform infrared spectrometry

Tianshu Wang, Changjiang Zhu, Junde Wang, Fuming Xu, więcej

Analytica Chimica Acta > 1995 > 306 > 2-3 > 249-258

The infrared emission characterization of high intensity IR flare material combustion is studied using a remote sensing Fourier transform infrared spectrometer. The emission spectra have been recorded between 4700 and 740 cm ^- ¹ with a spectral resolution of 0.24 cm ^- ¹ . The spectral radiance distribution of the IR flare material combustion has been given. A number of combustion...

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