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Search Results: 1 - 10 of 30991 matches for " Ming Qu "
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Damping Properties of Ethylene-Vinyl Acetate Rubber/Polylactic Acid Blends  [PDF]
Xiaozhen He, Ming Qu, Xinyan Shi
Journal of Materials Science and Chemical Engineering (MSCE) , 2016, DOI: 10.4236/msce.2016.43003
Abstract: In this research, ethylene-vinyl acetate rubber (EVM)/polylactic acid (PLA) = 80/20 by weight blend was compounded with silica in a Haake torque rheometer. The effects of hindered phenol (AO-60), super branched polyol, petroleum resin C9, polyvinyl chloride (PVC) and acrylic rubber (ACM) on the damping properties of blends were investigated by dynamic mechanic analyzer (DMA). The results showed that 20 phr super branched polyol significantly increased the damping factor of PLA to widen the effective damping temperature range from 42.1to 102.5. 15 phr AO-60 and 10 phr petroleum resin C9 both dramatically raised the blend’s damping factor to broaden the effective damping temperature range to 98.0 and 102.6, respectively. ACM and PVC are compatible with EVM, and both improved the damping properties of EVM/PLA blends.
EFFICIENT SIMULATION AND OPTIMIZATION OF LINEAR ACTIVE NETWORKS
线性有源网络的高效模拟和优化设计

Qu Ming,
曲明

电子与信息学报 , 1990,
Abstract: An efficient method for the optimization of linear network is presented. The computation cost in circuit optimization mainly depends on the simulation of network. In general, the simulation of a linear network needs to solve high dimension linear equations. An important characteristic in circuit optimization is that the number of independently tunable parameters is small. In term of the property of linear networks, the circuit is described by a multiport network in present method, and the hybrid matrix is established. The dimension of the equations to be solved is the same as the number of optimization parameters in objective function evolutions, so this method is very efficient.
Research and Application of Code Automatic Generation Algorithm Based on Structured Flowchart  [PDF]
Xiang-Hu Wu, Ming-Cheng Qu, Zhi-Qiang Liu, Jian-Zhong Li
Journal of Software Engineering and Applications (JSEA) , 2011, DOI: 10.4236/jsea.2011.49062
Abstract: It is of great significance to automatically generate code from structured flowchart. There are some deficiencies in existing researches, and their key algorithms and technologies are not elaborated, also there are very few full-featured integrated development platforms that can generate code automatically based on structured flowchart. By analyzing the characteristics of structured flowchart, a structure identification algorithm for structured flowchart is put forward. The correctness of algorithm is verified by enumeration iteration. Then taking the identified flowchart as input, an automatic code generation algorithm is proposed. Also the correctness is verified by enumeration iteration. Finally an integrated development platform is developed using those algorithms, including flowchart modeling, code automatic generation, CDT\GCC\GDB etc. The correctness and effectiveness of algorithms proposed are verified through practical operations.
Biomarkers: A Definite Plus in Pneumonia
Hanssa Summah,Jie-Ming Qu
Mediators of Inflammation , 2009, DOI: 10.1155/2009/675753
Abstract: During the past few years, biomarkers have emerged as an indispensible tool in the diagnosis of pneumonia. To find an ideal diagnostic biomarker for pneumonia is not an easy task. Not only should it allow an early diagnosis of the condition, but it should also allow differential diagnosis from other noninfectious conditions. Ongoing research is being done in this field so as to put an array of biomarkers at the disposal of doctors to improve the diagnosis of pneumonia when patients present to them with cough or nonspecific symptoms which could easily be misinterpreted as symptoms of other conditions. Procalcitonin and soluble triggering receptor expressed on myeloid cells-1 have emerged as reliable diagnostic markers in pneumonia, and are better when compared to other markers, namely, C-reactive protein, leukocyte count, and proinflammatory cytokines. Many other biomarkers are being studied for their probable use in diagnosing pneumonia but have yet to prove their benefit.
Instantaneous Purified Orbit: A New Tool for Analysis of Nonstationary Vibration of Rotor System
Shi Dongfeng,Qu Liangsheng,Bao Ming
International Journal of Rotating Machinery , 2001, DOI: 10.1155/s1023621x01000094
Abstract: In some circumstances, vibration signals of large rotating machinery possess time-varying characteristics to some extent. Traditional diagnosis methods, such as FFT spectrum and orbit diagram, are confronted with a huge challenge to deal with this problem. This work aims at studying the four intrinsic drawbacks of conventional vibration signal processing method and instantaneous purified orbit (IPO) on the basis of improved Fourier spectrum (IFS) to analyze nonstationary vibration. On account of integration, the benefits of short period Fourier transform (SPFT) and regular holospectrum, this method can intuitively reflect vibration characteristics of’a rotor system by means of parameter analysis for corresponding frequency ellipses. Practical examples, such as transient vibration in run-up stages and bistable condition of rotor show that IPO is a powerful tool for diagnosis and analysis of the vibration behavior of rotor systems.
Enzyme-Catalyzed Modifications of Polysaccharides and Poly(ethylene glycol)
H. N. Cheng,Qu-Ming Gu
Polymers , 2012, DOI: 10.3390/polym4021311
Abstract: Polysaccharides are used extensively in various industrial applications, such as food, adhesives, coatings, construction, paper, pharmaceuticals, and personal care. Many polysaccharide structures need to be modified in order to improve their end-use properties; this is mostly done through chemical reactions. In the past 20 years many enzyme-catalyzed modifications have been developed to supplement chemical derivatization methods. Typical reactions include enzymatic oxidation, ester formation, amidation, glycosylation, and molecular weight reduction. These reactions are reviewed in this paper, with emphasis placed on the work done by the authors. The polymers covered in this review include cellulosic derivatives, starch, guar, pectin, and poly(ethylene glycol).
The Design and Implementation of KDD System for Industrial Flow Object
Ming Cai,Jing Cai,Shouning Qu
International Journal of Engineering and Advanced Technology , 2012,
Abstract: KDD is an important research and application area. This paper is aimed at the application of flow object’s association rules extraction and object modeling in the cement industry. We adopt the improved Apriori algorithm and the flexible neural tree model of the structure optimization algorithm, designing and implementing the KDD system for industrial flow object by J2EE. The whole system is mainly divided into two functions: one function module is association rules extraction, the other one is object modeling, and the original data were collected from the decomposing furnace production link, which is one of the most important processes of the cement industry.
FFLO or Majorana superfluids: The fate of fermionic cold atoms in spin-orbit coupled optical lattices
Chunlei Qu,Ming Gong,Chuanwei Zhang
Physics , 2013, DOI: 10.1103/PhysRevA.89.053618
Abstract: The recent experimental realization of spin-orbit coupling (SOC) for ultra-cold atoms opens a completely new avenue for exploring new quantum matter. In experiments, the SOC is implemented simultaneously with a Zeeman field. Such spin-orbit coupled Fermi gases are predicted to support Majorana fermions with non-Abelian exchange statistics in one dimension (1D). However, as shown in recent theory and experiments for 1D spin-imbalanced Fermi gases, the Zeeman field can lead to the long-sought Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superfluids with non-zero momentum Cooper pairings, in contrast to the zero momentum pairing in Majorana superfluids. Therefore a natural question to ask is which phase, FFLO or Majorana superfluids, will survive in spin-orbit coupled Fermi gases in the presence of a large Zeeman field. In this paper, we address this question by studying the mean field quantum phases of 1D (quasi-1D) spin-orbit coupled fermionic cold atom optical lattices.
Low Dose Theophylline Showed an Inhibitory Effect on the Production of IL-6 and IL-8 in Primary Lung Fibroblast from Patients with COPD
Jing Zhang,Ming-xiang Feng,Jie-ming Qu
Mediators of Inflammation , 2012, DOI: 10.1155/2012/492901
Abstract: Chronic obstructive pulmonary disease (COPD) is characterized by the abnormal and chronic lung inflammation. We hypothesized that lung fibroblasts could contribute to the local inflammation and investigated whether low dose theophylline had a beneficial effect on fibroblasts inflammation. Subjects undergoing lobectomy for bronchial carcinoma were enrolled and divided into COPD and control groups according to spirometry. Primary human lung fibroblasts were cultured from peripheral lung tissue distant to tumor tissue. There was a significant increase in both the mRNA expressions and protein levels for IL-6 and IL-8 in fibroblasts in COPD group, and the values were negatively correlated with lung function (<0.05). For COPD fibroblasts, the protein levels of IL-6 and IL-8 decreased from 993.0 ± 738.9 pg/mL to 650.1 ± 421.9 pg/mL (=0.014) and from 703.1 ± 278.0 pg/mL to 492.0 ± 214.9 pg/mL (=0.001), respectively, with 5 μg/mL theophylline treatment. In addition, theophylline at the dose of 5 μg/mL reduced the increased production of IL-6 and IL-8 induced by 1 μg/mL LPS in primary human lung fibroblasts. Our data suggest that lung fibroblasts participate in the chronic inflammation in COPD by releasing IL-6 and IL-8, and low dose theophylline can alleviate the proinflammatory mediators’ production by fibroblasts.
ANALYSIS OF CLASS E TUNED POWER AMPLIFIER WITH ANTIPARALLEL DIODE AT SWITCH
带有反向并联二极管的E类调谐功率放大器的分析

Qu Ming,Xie Aiguo,
曲明
,谢爱国

电子与信息学报 , 1992,
Abstract: A general approach to analysis of class E tuned power amplifier with anti-parallel diode at switch is presented. First, the determination of diode active angle is discussed. Then the amplifier output response, along with performance evaluation, is derived and expressed in the closed form Fourier series by combining Fourier analysis and state equation technique. Applications to several amplifiers with varying param eters show that the method is fast and robust. The proposed approach affords an effective means to the exact analysis and design of class E tuned power amplifier with parallel diode at switch.
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