Search results for: Qing Huai

Items from 1 to 20 out of 23 results

article

Protection Scheme for Multiterminal HVDC System Based on Wavelet Transform Modulus Maxima

Qing Huai, Kaipei Liu, Hua Ding, Liang Qin

IEEJ Transactions on Electrical and Electronic Engineering > 15 > 8 > 1147 - 1159

Fault protection is a major issue in the development of multiterminal high‐voltage direct current (HVDC) system based on voltage‐source converter. Owing to the rapid increase in fault current under DC faults, protection requires a fast fault detection method to isolate the fault current. However, the selectivity and reliability of the fast protection scheme should be primarily guaranteed. Therefore,...

article

miR-498 promotes cell proliferation and inhibits cell apoptosis in retinoblastoma by directly targeting CCPG1

Ling Yang, Ning Wei, Li Wang, Xiang Wang, more

Child's Nervous System > 2018 > 34 > 3 > 417-422

Purpose Retinoblastoma (Rb) is the most common intraocular tumor in children. MicroRNAs (miRNAs) play a crucial role in gene regulation and cell growth/apoptosis/differentiation. The current study aimed to investigate the role of miR-498 in Rb. Methods Quantitative real-time polymerase chain reaction (QRT-PCR) was used to test mRNA level of miR-498. http://www.targetscan.org and http://www.microrna...

chapter

The Infeasible Combined Homotopy Method for a Class of Programming Problems

Jia-wei Tani, Jia Chen, Qing-huai Liu

Lecture Notes in Computer Science > Information Computing and Applications > System Simulation and Computing > 758-764

In this paper, a class of nonconvex programming problems with inequality constraint functions was studied, under the conditions that the boundary is regular and the feasible set is connected and bounded. At first, the infeasible constraint functions were constructed. Then, the infeasible combined homotopy equation was constructed to solve this problem. At last the existence of a smooth homotopy path...

chapter

Computer Simulation and Calculation for Luminance Uniformity of Straight Line Radiation Sources

Jia Chen, Jia-wei Tan, Qing-huai Liu, Fan-rong Zhang

Lecture Notes in Computer Science > Information Computing and Applications > System Simulation and Computing > 750-757

In order to avoid the macroscopically inhomogeneous characteristics of large area films which prepared by Photo-assisted MOCVD (Metal Organic Chemical Vapor Deposition), processed by RIP (Rapid isothermal processing) technique, etc., the calculation of luminance uniformity is necessary. This thesis gives a basic calculation method about the radiation intensity of illumination caused by halogen-tungsten...

article

Innovative magnetic rings for circumferential mucosectomy: preliminary research

Geng Shu An, Zhang Qing Huai, Zhou Sheng, Zhang Shu Min, more

Surgery Today > 2015 > 45 > 1 > 78-82

Purpose To improve the procedures used to treat prolapse and hemorrhoids, novel magnetic rings were invented to use in circumferential mucosectomies to avoid the disadvantages of stapling techniques. Methods Thirty adult pigs were randomly divided into three groups: Group A (n = 10), which underwent circumferential mucosectomy with novel magnetic rings; Group B (n = 10), which underwent circumferential...

article

mRNA Expression of IGF-1 and IGF-1R in Patients with Colorectal Adenocarcinoma and Type 2 Diabetes

Rui Liu, Li-Ling Hu, Ao Sun, Ya-Jing Cao, more

Archives of Medical Research > 2014 > 45 > 4 > 318-324

Increasing studies show that messenger RNA (mRNA) levels of local IGF-system are overexpressed in cancer tissue of patients with colorectal cancer (CRC). However, the influence of type 2 diabetes (T2DM) on the expression of insulin-like growth factor-1 (IGF-1) and IGF-1 receptor (IGF-1R) mRNA in colorectal cancer tissue and adjacent non-cancerous tissue (ANCT) is unknown. The aim of this study was...

article

Effects of wheelset vibration on initiation and evolution of rail short-pitch corrugation

Zi-quan Yan, Ai-jun Gu, Wei-ning Liu, V. L. Markine, more

Journal of Central South University > 2012 > 19 > 9 > 2681-2688

The initiation and evolution of short-pitch corrugation in Beijing metro line 4 was studied from the viewpoint of wheelset vibration. A three-dimensional elastic model was set up. Numerical simulations were undertaken with this model to analyze the corrugation by the wheelset vertical vibration and torsional vibration. Based on numerical results, the relation between rail corrugation and wheelset...

chapter

The Aggregate Homotopy Interior-Point Method for a Class of Multi-Objective Programming Problems

He Li, Dong Xiao-gang, Zhao Jia-qi, Liu Qing-huai

2010 2nd International Conference on Information Engineering and Computer Science > 1 - 4

2010 2nd International Conference on Information Engineering and Computer Science (ICIECS)

We solve a class of convex multi-objective programming problems using aggregate homotopy method. By the means of aggregate function, we transform a multi-objective programming problem with constrains into a uniobjective programming problem with a single constrain. Combined homotopy interior-point method is used to solve the single-object optimization problem; the minimal weak efficient solution of...

chapter

A combined homotopy method for nonconvex multi-objective programming problem with equality and inequality constrains

He Li, Wang Xiu-yu, Jin Jian-lu, Qing-huai Liu

2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering > 1 > 81 - 84

2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering (CMCE 2010)

We solve a class of nonconvex multi-objective programming problem with equality and inequality constrains using the homotopy method. We develop a new shifted cone condition and generate the homotopy equation. Under that conditions, we prove that for almost every point in the feasible region, a smooth and bounded homotopy path can be derived and that the algorithm converges to the K-K-T point of multi-objective...

chapter

Whole Life-Cycle Cost Study Model of Urban Rail Transit

Chen Jin-jie, Chen Feng, Liang Qing-huai, Gao Gui-feng

2009 Second International Conference on Intelligent Computation Technology and Automation > 3 > 887 - 891

2009 Second International Conference on Intelligent Computation Technology and Automation (ICICTA)

On the basis of whole life-cycle cost analysis theory, this article establishes the whole life-cycle cost analysis mathematical model for urban rail transit. Based on lots of investigation materials and through the method of statistical analysis, the cost components of urban rail transit was obtained, and this achievement has high reference value for the cities with new rail transit and the new rail...

article

Crystal Structure of the Bovine Lactadherin C2 Domain, a Membrane Binding Motif, Shows Similarity to the C2 Domains of Factor V and Factor VIII

Lin Lin, Qing Huai, Mingdong Huang, Bruce Furie, more

Journal of Molecular Biology > 2007 > 371 > 3 > 717-724

Lactadherin, a glycoprotein secreted by a variety of cell types, contains two EGF domains and two C domains with sequence homology to the C domains of blood coagulation proteins factor V and factor VIII. Like these proteins, lactadherin binds to phosphatidylserine (PS)-containing membranes with high affinity. We determined the crystal structure of the bovine lactadherin C2 domain (residues 1 to 158)...

article

Enantiomer Discrimination Illustrated by the High Resolution Crystal Structures of Type 4 Phosphodiesterase ^†

Qing Huai, Yingjie Sun, Huanchen Wang, Dwight Macdonald, more

Journal of Medicinal Chemistry > 2006 > 49 > 6 > 1867 - 1873

article

Structures of the N-Terminal and Middle Domains of E. coli Hsp90 and Conformation Changes upon ADP Binding

Qing Huai, Huanchen Wang, Yudong Liu, Hwa-Young Kim, more

Structure > 2005 > 13 > 4 > 579-590

Hsp90 is an abundant molecular chaperone involved in many biological systems. We report here the crystal structures of the unliganded and ADP bound fragments containing the N-terminal and middle domains of HtpG, an E. coli Hsp90. These domains are not connected through a flexible linker, as often portrayed in models, but are intimately associated with one another. The individual HtpG domains have...

article

Mathematical model for the optimization of the allocation of nonferrous raw materials in China

Yi-Ming Wei, Qing-huai Hu, Ying Fan

Computers & Industrial Engineering > 2004 > 46 > 2 > 293-303

Taking the management point of view at a high level of administration, this paper describes the model formulation of the optimized allocation of nonferrous raw materials countrywide in China, which is of great technical and economical significance. The databases and computer system design with personal computers are recommended and some results and conclusions included.

article

Structures of calcineurin and its complexes with immunophilins–immunosuppressants

Hengming Ke, Qing Huai

Biochemical and Biophysical Research Communications > 2003 > 311 > 4 > 1095-1102

Calcineurin (CN) is a Ca ²⁺ /calmodulin-dependent serine/threonine protein phosphatase and is involved in many physiological processes such as T-cell activation and cardiac hypertrophy. The crystal structures of CN and its complexes with FKBP12–FK506 and cyclophilin–cyclosporin showed that the two structurally unrelated immunophilins–immunosuppressants bind to a common composite surface made...

article

The Crystal Structure of AMP-Bound PDE4 Suggests a Mechanism for Phosphodiesterase Catalysis ^† ^, ^‡

Qing Huai, John Colicelli, Hengming Ke

Biochemistry > 2003 > 42 > 45 > 13220 - 13226

article

Crystal structure of DJ-1/RS and implication on familial Parkinson's disease

Qing Huai, Yingjie Sun, Huanchen Wang, Lih-Shen Chin, more

FEBS Letters > 2003 > 549 > 1-3 > 171-175

DJ-1 is a protein involved in multiple physiological processes, including cancer, Parkinson's disease, and male fertility. It is unknown how DJ-1 functions in the apparently different systems. The crystal structure of DJ-1 at 1.6 A resolution shows that DJ-1 is a helix-strand-helix sandwich and forms a dimer. The DJ-1 structure is similar to the members of the intracellular protease PfpI family. However,...

article

Three-Dimensional Structures of PDE4D in Complex with Roliprams and Implication on Inhibitor Selectivity

Qing Huai, Huanchen Wang, Yingjie Sun, Hwa-Young Kim, more

Structure > 2003 > 11 > 7 > 865-873

Selective inhibitors against the 11 families of cyclic nucleotide phosphodiesterases (PDEs) are used to treat various human diseases. How the inhibitors selectively bind the conserved PDE catalytic domains is unknown. The crystal structures of the PDE4D2 catalytic domain in complex with (R)- or (R,S)-rolipram suggest that inhibitor selectivity is determined by the chemical nature of amino acids and...

article

Uptake and distribution of rare earth elements in rice seeds cultured in fertilizer solution of rare earth elements

Dongan Yuan, Xiao-quan Shan, Qing Huai, Bei Wen, more

Chemosphere > 2001 > 43 > 3 > 327-337

The uptake behavior of rare earth elements (REEs) under pot conditions using deionized water and a REE fertilizer solution as the culture media as well as the distribution of REEs in rice proteins were studied. The uptake of REEs in rice seeds increased dramatically after a lag period of approximately three days. Roots can accumulate a much higher content of REEs than germs and the resting seeds....

article

Isolation and characterization of rare earth element-binding protein in roots of maize

Dong-an Yuan, Xiao-quan Shan, Bei Wen, Qing Huai

Biological Trace Element Research > 2001 > 79 > 2 > 185-194

Rare earth element-binding protein was isolated from maize, which was grown under greenhouse conditions and characterized in terms of molecular weight, amino acid composition, and ultraviolet absorption. The molecular weight of the maize protein was determined to be 183,000, with two distinct subunits of approximately molecular weights of 22,000 and 69,000, respectively. The protein is particularly...

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INFONA - science communication portal

Search results for: Qing Huai

Protection Scheme for Multiterminal HVDC System Based on Wavelet Transform Modulus Maxima

miR-498 promotes cell proliferation and inhibits cell apoptosis in retinoblastoma by directly targeting CCPG1

The Infeasible Combined Homotopy Method for a Class of Programming Problems

Computer Simulation and Calculation for Luminance Uniformity of Straight Line Radiation Sources

Innovative magnetic rings for circumferential mucosectomy: preliminary research

mRNA Expression of IGF-1 and IGF-1R in Patients with Colorectal Adenocarcinoma and Type 2 Diabetes

Effects of wheelset vibration on initiation and evolution of rail short-pitch corrugation

The Aggregate Homotopy Interior-Point Method for a Class of Multi-Objective Programming Problems

A combined homotopy method for nonconvex multi-objective programming problem with equality and inequality constrains

Whole Life-Cycle Cost Study Model of Urban Rail Transit

Crystal Structure of the Bovine Lactadherin C2 Domain, a Membrane Binding Motif, Shows Similarity to the C2 Domains of Factor V and Factor VIII

Enantiomer Discrimination Illustrated by the High Resolution Crystal Structures of Type 4 Phosphodiesterase ^†

Structures of the N-Terminal and Middle Domains of E. coli Hsp90 and Conformation Changes upon ADP Binding

Mathematical model for the optimization of the allocation of nonferrous raw materials in China

Structures of calcineurin and its complexes with immunophilins–immunosuppressants

The Crystal Structure of AMP-Bound PDE4 Suggests a Mechanism for Phosphodiesterase Catalysis ^† ^, ^‡

Crystal structure of DJ-1/RS and implication on familial Parkinson's disease

Three-Dimensional Structures of PDE4D in Complex with Roliprams and Implication on Inhibitor Selectivity

Uptake and distribution of rare earth elements in rice seeds cultured in fertilizer solution of rare earth elements

Isolation and characterization of rare earth element-binding protein in roots of maize

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