Search results for: Yannan Chen

Items from 1 to 20 out of 27 results

article

Hepatocyte growth factor is protective in early stage but bone‐destructive in late stage of experimental periodontitis

Xiaomin Zhao, Weijia Liu, Zhicong Wu, Xiaoxi He, more

Journal of Periodontal Research > 59 > 3 > 565 - 575

Background and Objective Clinical studies found high levels of hepatocyte growth factor (HGF) expression in patients with periodontitis. Studies suggest that HGF plays an important role in periodontitis, is involved in inflammation, and modulates alveolar bone integrity in periodontitis. This study aims to investigate the effects and mechanisms of HGF in the progression of experimental periodontitis...

article

Low Tucker rank tensor completion using a symmetric block coordinate descent method

Quan Yu, Xinzhen Zhang, Yannan Chen, Liqun Qi

Numerical Linear Algebra with Applications > 30 > 3 > n/a - n/a

Low Tucker rank tensor completion has wide applications in science and engineering. Many existing approaches dealt with the Tucker rank by unfolding matrix rank. However, unfolding a tensor to a matrix would destroy the data's original multi‐way structure, resulting in vital information loss and degraded performance. In this article, we establish a relationship between the Tucker ranks and the ranks...

article

Para‐phenylenediamine deteriorates oocyte quality by impairing mitochondrial function

Xia Wang, Xi Zhao, Yannan Chen, Qingxin Wang, more

Environmental Toxicology > 37 > 7 > 1803 - 1813

Several studies demonstrate that para‐phenylenediamine (PPD) is often added to permanent oxidative hair dyes. Sub‐chronic topical exposure to PPD in male rats damages their testicular function; however, little is known about the effects of PPD exposure on the female reproductive system, especially on oocyte quality. In this study, we found that PPD can affect the meiotic capacity of oocytes and their...

article

An irreducible polynomial functional basis of two-dimensional Eshelby tensors

Zhenyu Ming, Liping Zhang, Yannan Chen

Applied Mathematics and Mechanics > 2019 > 40 > 8 > 1169-1180

The two-dimensional (2D) Eshelby tensors are discussed. Based upon the complex variable method, an integrity basis of ten isotropic invariants of the 2D Eshelby tensors is obtained. Since an integrity basis is always a polynomial functional basis, these ten isotropic invariants are further proven to form an irreducible polynomial functional basis of the 2D Eshelby tensors.

article

Irreducible function bases of isotropic invariants of a third order three-dimensional symmetric and traceless tensor

Yannan Chen, Shenglong Hu, Liqun Qi, Wennan Zou

Frontiers of Mathematics in China > 2019 > 14 > 1 > 1-16

Third order three-dimensional symmetric and traceless tensors play an important role in physics and tensor representation theory. A minimal integrity basis of a third order three-dimensional symmetric and traceless tensor has four invariants with degrees two, four, six, and ten, respectively. In this paper, we show that any minimal integrity basis of a third order three-dimensional symmetric and traceless...

article

Plasmonic Ag coated Zn/Ti-LDH with excellent photocatalytic activity

Yanping Zhu, Runliang Zhu, Gangqiang Zhu, Miaomiao Wang, more

Applied Surface Science > 2018 > 433 > C > 458-467

Nowadays, two-dimensional (2D) nanosheets, such as layered double hydroxides (LDH), have received considerable attention for their potential to meeting clean energy demand and solving environmental problems. In this work, novel and efficient photocatalysts of plasmonic Ag nanoparticles coated Zn/Ti-LDH nanosheets have been synthesized through low-temperature reduction method. The structural characteristics...

article

Three-dimensional Ag2O/Bi5O7I p–n heterojunction photocatalyst harnessing UV–vis–NIR broad spectrum for photodegradation of organic pollutants

Yannan Chen, Gangqiang Zhu, Mirabbos Hojamberdiev, Jianzhi Gao, more

Journal of Hazardous Materials > 2018 > 344 > C > 42-54

Ag₂O nanoparticles-loaded Bi₅O₇I microspheres forming a three dimensional Ag₂O/Bi₅O₇I p–n heterojunction photocatalyst with wide-spectrum response were synthesized in this study. The results of transmission electron microscopy observations revealed that the Ag₂O nanoparticles with the diameter of ca. 10–20nm were distributed on the surfaces of Bi₅O₇I nanosheets. The as-synthesized Ag₂O/Bi₅O₇I exhibited...

article

A semidefinite program approach for computing the maximum eigenvalue of a class of structured tensors and its applications in hypergraphs and copositivity test

Haibin Chen, Yannan Chen, Guoyin Li, Liqun Qi

Numerical Linear Algebra with Applications > 25 > 1 > n/a - n/a

Finding the maximum eigenvalue of a symmetric tensor is an important topic in tensor computation and numerical multilinear algebra. In this paper, we introduce a new class of structured tensors called W‐tensors, which not only extends the well‐studied nonnegative tensors by allowing negative entries but also covers several important tensors arising naturally from spectral hypergraph theory. We then...

article

Loss of TAB3 expression by shRNA exhibits suppressive bioactivity and increased chemical sensitivity of ovarian cancer cell lines via the NF‐κB pathway

Yannan Chen, Xia Wang, Chengwei Duan, Jie Chen, more

Cell Proliferation > 49 > 6 > 657 - 668

Ovarian cancer is a leading cause of death among gynaecologic malignancies. Despite many years of research, it still remains sparing in reliable diagnostic markers and methods for early detection and screening. Transforming growth factor β‐activated protein kinase 1 (TAK1)‐binding protein 3 (TAB3) was initially characterized as an adapter protein essential for TAK1 activation in response to IL‐1β...

article

Preparation of hollow Ag/AgCl/BiOCl microspheres with enhanced photocatalytic activity for methyl orange under LED light irradiation

Yannan Chen, Gangqiang Zhu, Yongbao Liu, Jianzhi Gao, more

Journal of Materials Science: Materials in Electronics > 2017 > 28 > 3 > 2859-2866

Hollow Ag/AgCl/BiOCl microspheres photocatalysts have been successfully fabricated by anchoring Ag/AgCl nanoparticles on the surfaces of BiOCl microstructures. The as-synthesized composites greatly enhanced photocatalytic performance in the degradation of methyl orange under LED light irradiation, which was much higher than the Ag/AgCl or pure BiOCl. The photocatalytic mechanisms were analyzed by...

article

Positive semi-definiteness and sum-of-squares property of fourth order four dimensional Hankel tensors

Yannan Chen, Liqun Qi, Qun Wang

Journal of Computational and Applied Mathematics > 2016 > 302 > C > 356-368

A symmetric positive semi-definite (PSD) tensor, which is not sum-of-squares (SOS), is called a PSD non-SOS (PNS) tensor. Is there a fourth order four dimensional PNS Hankel tensor? The answer for this question has both theoretical and practical significance. Under the assumptions that the generating vector v of a Hankel tensor A is symmetric and the fifth element v4 of v is fixed at 1, we show that...

article

c-Yes enhances tumor migration and invasion via PI3K/AKT pathway in epithelial ovarian cancer

Yunfeng Jin, Menghui Huang, Yingying Wang, Changying Yi, more

Experimental and Molecular Pathology > 2016 > 101 > 1 > 50-57

Overexpression of c-Yes has been noted to correlation with several human cancers. However, the effects of c-Yes on epithelial ovarian cancer (EOC) development remain unclear. The aim of this study is going to prove the effects of c-Yes and related mechanisms in proliferation, metastasis and invasion of EOC. Immunohistochemical analysis was performed in 119 human EOC samples, and the data was correlated...

chapter

Movie recommendation in heterogeneous information networks

Yannan Chen, Ruifang Liu, Weiran Xu

2016 IEEE Information Technology, Networking, Electronic and Automation Control Conference > 637 - 640

2016 IEEE Information Technology, Networking, Electronic and Automation Control Conference (ITNEC)

Recommender systems, as we all know, have gained tremendous popularity over the past few years and been widely used in e-commerce. Recent researches have improved recommendation performance combining additional user and item relationships with hybrid recommender systems. However, most of these studies only consider a single type of relationship while in application recommendation problems always exist...

article

PFTK1 regulates cell proliferation, migration and invasion in epithelial ovarian cancer

Weiwei Zhang, Rong Liu, Chunhui Tang, Qinghua Xi, more

International Journal of Biological Macromolecules > 2016 > 85 > C > 405-416

PFTK1, also named Cyclin-Dependent Kinase 14 (CDK14), is a member of the cell division cycle 2 (CDC2)-related protein kinase family. It is a serine/threonine-protein kinase involved in the regulation of cell cycle progression and cell proliferation. In this study, we investigated the role of PFTK1 in epithelial ovarian cancer (EOC) development. The expression of PFTK1 was detected by Western blot...

article

Computing Extreme Eigenvalues of Large Scale Hankel Tensors

Yannan Chen, Liqun Qi, Qun Wang

Journal of Scientific Computing > 2016 > 68 > 2 > 716-738

Large scale tensors, including large scale Hankel tensors, have many applications in science and engineering. In this paper, we propose an inexact curvilinear search optimization method to compute Z- and H-eigenvalues of mth order n dimensional Hankel tensors, where n is large. Owing to the fast Fourier transform, the computational cost of each iteration of the new method is about $$\mathcal {O}(mn\log...

article

Three dimensional strongly symmetric circulant tensors

Liqun Qi, Qun Wang, Yannan Chen

Linear Algebra and Its Applications > 2015 > 482 > Complete > 207-220

In this paper, we give a necessary and sufficient condition for an even order three dimensional strongly symmetric circulant tensor to be positive semi-definite. We show that this condition can be a sufficient condition for such a tensor to be sum-of-squares in some cases. There are no PNS strongly symmetric circulant tensors to be found in numerical tests.

chapter

Voltage and E-field distribution of UHV composite insulator with connection of porcelain insulators

Jialong Wang, Yannan Chen, Jintao Liao, Zongren Peng

2015 IEEE 11th International Conference on the Properties and Applications of Dielectric Materials (ICPADM) > 628 - 631

2015 IEEE 11th International Conference on the Properties and Applications of Dielectric Materials (ICPADM)

Composite insulator has advantages in antifouling property, light weight, easy installation and transportation. It has been widely used in 1000kV UHV transmission lines. As the increase of operating voltage, the nonuniformity of potential and electric field distribution on the high voltage end of composite insulator is more serious due to its geometry configure, and the aging problem is easier to...

chapter

Sensor fault detection and estimation for heat exchanger using Unscented Kalman Filter

Jianhua Zhang, Yannan Chen, Jing Xiong, Luyao Zhang, more

2014 9th IEEE Conference on Industrial Electronics and Applications > 540 - 545

2014 IEEE 9th Conference on Industrial Electronics and Applications (ICIEA)

The main objective of this paper is to describe the application of Unscented Kalman Filter (UKF) estimation algorithm to the problem of fault detection and estimation of the sensor failures in the heat exchanger systems. The proposed fault detection is based on innovation sequence implementing UKF which is used to generate residuals when a sensor fault is presented. By evaluating the generated residual,...

chapter

Multivariable robust control for Organic Rankine Cycle based waste heat recovery systems

Jianhua Zhang, Song Gao, Yannan Chen, Guolian Hou

2013 IEEE 8th Conference on Industrial Electronics and Applications (ICIEA) > 85 - 89

2013 IEEE 8th Conference on Industrial Electronics and Applications (ICIEA)

Organic Rankine Cycle (ORC) is particularly suitable for the recovery of energy from low-quality heat sources. In this paper, based on robust theory, a multivariable robust controller was designed for an ORC system. This simple-structured and easy-to-realized controller does not require a precise math model. The integral action included in it compensates unknown factors of the plant. The simulation...

article

Nonnegative tensor factorizations using an alternating direction method

Xingju Cai, Yannan Chen, Deren Han

Frontiers of Mathematics in China > 2013 > 8 > 1 > 3-18

The nonnegative tensor (matrix) factorization finds more and more applications in various disciplines including machine learning, data mining, and blind source separation, etc. In computation, the optimization problem involved is solved by alternatively minimizing one factor while the others are fixed. To solve the subproblem efficiently, we first exploit a variable regularization term which makes...

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INFONA - science communication portal

Search results for: Yannan Chen

Hepatocyte growth factor is protective in early stage but bone‐destructive in late stage of experimental periodontitis

Low Tucker rank tensor completion using a symmetric block coordinate descent method

Para‐phenylenediamine deteriorates oocyte quality by impairing mitochondrial function

An irreducible polynomial functional basis of two-dimensional Eshelby tensors

Irreducible function bases of isotropic invariants of a third order three-dimensional symmetric and traceless tensor

Plasmonic Ag coated Zn/Ti-LDH with excellent photocatalytic activity

Three-dimensional Ag2O/Bi5O7I p–n heterojunction photocatalyst harnessing UV–vis–NIR broad spectrum for photodegradation of organic pollutants

A semidefinite program approach for computing the maximum eigenvalue of a class of structured tensors and its applications in hypergraphs and copositivity test

Loss of TAB3 expression by shRNA exhibits suppressive bioactivity and increased chemical sensitivity of ovarian cancer cell lines via the NF‐κB pathway

Preparation of hollow Ag/AgCl/BiOCl microspheres with enhanced photocatalytic activity for methyl orange under LED light irradiation

Positive semi-definiteness and sum-of-squares property of fourth order four dimensional Hankel tensors

c-Yes enhances tumor migration and invasion via PI3K/AKT pathway in epithelial ovarian cancer

Movie recommendation in heterogeneous information networks

PFTK1 regulates cell proliferation, migration and invasion in epithelial ovarian cancer

Computing Extreme Eigenvalues of Large Scale Hankel Tensors

Three dimensional strongly symmetric circulant tensors

Voltage and E-field distribution of UHV composite insulator with connection of porcelain insulators

Sensor fault detection and estimation for heat exchanger using Unscented Kalman Filter

Multivariable robust control for Organic Rankine Cycle based waste heat recovery systems

Nonnegative tensor factorizations using an alternating direction method

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