Hubei University of Arts and Science

www.hbuas.edu.cn
Xiangyang, China
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Zhou L.,Hubei University of Arts and Science
European review for medical and pharmacological sciences | Year: 2017

OBJECTIVE: Colorectal cancer incidence showed increasing trend with living standard improvement and lifestyle changes. This study investigated the relationship and diagnostic value of colorectal cancer lymph node metastasis and prognosis using magnetic resonance (MR) and computed tomography (CT).RESULTS: The accuracy of MR and CT in judging colorectal cancer lymph node metastasis ratio (LNR) was 92.5% and 75.5%, respectively. MR showed significantly higher accuracy than CT (p < 0.05). The coincidence rate of LNR result derived from MR and CT with colorectal cancer histopathological results was 57.6% and 54.7%, respectively. MR and CT sensitivity were 42.6% and 25.0%, while their specificity was 74.1% and 41.3%, respectively. The positive predictive value and negative predictive value of MR and CT were 61.1% and 51.4%, 57.1% and 66.7%, respectively. c2-test showed that MR diagnosis result was consistent with histopathological result (p < 0.05). The coincidence rate of MR and CT evaluation on 5-year disease-free survival and overall survival were 56.7% and 43.8%, respectively.PATIENTS AND METHODS: Siemens Avanto 3.0T MR and GE Light Speed Pro 64 row helical CT were used to scan 318 cases of colorectal cancer patients diagnosed by pathology. The relationship between colorectal cancer lymph node metastasis and prognosis after surgery was analyzed.CONCLUSIONS: MR showed a better effect on prognosis than CT and could be treated as the first choice to predict LNR and prognosis. MR demonstrated a good correlation with pathological results and could be used to predict LNR and prognosis.


Wang X.,Hubei University of Arts and Science | Pan Z.,Nanjing University of Technology
Construction and Building Materials | Year: 2017

Physical performance and chemical composition of some hydration products in hardened cement paste are changed considerably in presence of NH4 +ions which is closely related to long term durability of cement concrete. The dissolution of some hydration products and the newly formed reaction products in such system were thus studied. The results showed that the concentration of dissolved Ca2+ ions were increased with the concentration of (NH4)2SO4 solution in external environment; when dissolution process was reached equilibrium, the main product was gypsum; while koktaite was also detected in condition of higher concentration of (NH4)2SO4 solution, which was usually ignored or mistaken as ettringite. In this case, gypsum crystals experienced significant morphology change with the deceasing of particle size when the concentration of (NH4)2SO4 solution was increased. Moreover, by the dissolving of Ca2+ ion, [SiO4]4 − tetrahedral chains polymerized into network structure and NH4 + ions were supposed to be doped into C-S-H network structure. © 2017 Elsevier Ltd


Ming C.,Hubei University of Arts and Science
Agro Food Industry Hi-Tech | Year: 2017

This research examines data optimization of a communication network architecture for an intelligent power distribution automation system based on data mining. The network extracts implicit process mode characteristics of input function to self-organize. The improved competition learning algorithm is given. Clustering result of the UCI datasets shows that the proposed approach can be effectively applied to timing clustering.


Yin X.,Huazhong University of Science and Technology | Yue D.,Nanjing University of Posts and Telecommunications | Hu S.,Hubei University of Arts and Science
Journal of the Franklin Institute | Year: 2013

This paper investigates the consensus problem for a set of discrete-time heterogeneous multi-agent systems composed of two kinds of agents differed by their dynamics. The consensus control is designed based on the event-triggered communication scheme, which can lead to a significant reduction of the information communication burden in the multi-agent network. Meanwhile, only the communication between the agent and its local neighbors is needed, therefore, the designed control is essentially distributed. Based on the Lyapunov functional method and the Kronecker product technique, a sufficient condition is obtained to guarantee the consensus of heterogeneous multi-agent systems in terms of linear matrix inequality (LMI). Simulation results illustrate the effectiveness of the developed theory in the last.


Lei L.,Xiangyang Central Hospital | Huang Y.,Xiangyang Central Hospital | Gong W.,Hubei University of Arts and Science
Oncology Reports | Year: 2013

Non-small cell lung cancer (NSCLC) is one of the most common causes of cancer-related mortality worldwide. microRNAs (miRNAs) play critical roles in carcinogenesis. miR-205 has been shown to be upregulated in NSCLC. In the present study, we identified the promotive effects of miR-205 on various significant biological properties of NSCLC cells, and confirmed the regulation of PTEN by miR-205. The expression of miR-205 was examined by quantitative real-time PCR both in NSCLC cell lines and tissues. The effect of miR-205 on PTEN expression was assessed in NSCLC cell lines with miR-205 mimics/inhibitor to elevate/decrease miR-205 expression. Furthermore, the roles of miR-205 in regulating the biological properties of NSCLC cells, including growth, invasion and chemoresistance, were assayed using miR-205 mimic/inhibitor-transfected cells. The 3′-untranslated region (3′-UTR) of PTEN combined with miR-205 and this was confirmed by luciferase reporter assay and western blotting. miR-205 expression was increased in NSCLC cell lines as well as in tissues. Overexpression of miR-205 promoted growth, migration and invasion, and enhanced the chemoresistance of NSCLC cells. Luciferase activity and western blotting demonstrated that miR-205 negatively regulated PTEN at a posttranscriptional level. However, miR-205 knockdown suppressed these processes in A549 cells and increased the expression of PTEN protein. Furthermore, overexpression of PTEN exhibited effects identical with those of the miR-205 inhibitor in NSCLC cells. Our results demonstrated that miR-205 is involved in the tumorigenesis of NSCLC through modulation of the PTEN signaling pathway.


Lei L.,Xiangyang Central Hospital | Huang Y.,Xiangyang Central Hospital | Gong W.,Hubei University of Arts and Science
Molecular and Cellular Biochemistry | Year: 2014

microRNAs play critical roles in the progression and metastasis of nonsmall cell lung cancer (NSCLC). miR-92b acts as an oncogene in some malignancies; however, its role in NSCLC remains poorly understood. Here, we found that miR-92b was significantly increased in human NSCLC tissues and cell lines. Inhibition of miR-92b remarkably suppressed cell proliferation, migration, and invasion of NSCLC cells. Reversion-inducing-cysteine-rich protein with kazal motifs (RECK) was identified to be a target of miR-92b. Expression of miR-92b was negatively correlated with RECK in NSCLC tissues. Collectively, miR-92b might promote NSCLC cell growth and motility partially by inhibiting RECK. © 2013 Springer Science+Business Media New York.


Xie X.D.,Hubei University of Arts and Science | Wang Q.,University of Manitoba | Wu N.,University of Manitoba
International Journal of Engineering Science | Year: 2014

A ring piezoelectric harvester excited by magnetic forces with high excitation frequencies is developed. The harvester is made of a concentric outer ring stator and an inner ring rotator. The stator ring is made of a series of discrete piezoelectric patches with a rectangular shape surface mounted by magnetic ring slabs with the same size. All the piezoelectric patches and the magnetic slabs are placed on an aluminum ring. The rotator ring is made of a serious of magnetic rectangular slabs mounted on an aluminum ring with the exact size of the corresponding piezoelectric patches on the stator. Because of periodic magnetic forces between the stator ring and the rotator ring, a compression is induced to the piezoelectric patches leading to an electric charge for energy harvesting. To describe the energy harvesting process, a mathematical model is used to calculate the output charge and voltage from the piezoelectric patches. The influences of the size of the piezoelectric harvester and the rotating speed of the rotator ring on the root mean square of the generated electric power are discussed. Our results show that a power up to 5274.8 W can be realized for a practical design of the harvester with a radius around 0.5 m. This research develops a novel technique for an efficient and practical energy harvesting from the developed ring piezoelectric energy harvesters. © 2014 Elsevier Ltd. All rights reserved.


Yin X.,Huazhong University of Science and Technology | Hu S.,Hubei University of Arts and Science
Asian Journal of Control | Year: 2013

This paper is devoted to the consensus protocol design for a set of agents with fractional-order uncertainty dynamics where the fractional order α satisfies 0 < α < 2. For multi-agent systems (MASs) with fixed undirected topology, a distributed static output feedback protocol is proposed with an undetermined system matrix. Based on model transformation and fractional-order stability theory, sufficient conditions are derived to ensure the consensus of MASs in terms of linear matrix inequalities (LMIs). Finally, a simulation example is employed to validate the effectiveness of the proposed consensus protocol. © 2013 John Wiley and Sons Asia Pte Ltd and Chinese Automatic Control Society.


Yin X.,Huazhong University of Science and Technology | Yue D.,Huazhong University of Science and Technology | Hu S.,Hubei University of Arts and Science
IET Control Theory and Applications | Year: 2013

This study is devoted to the consensus protocols design for a set of fractional-order heterogeneous agents, which is composed of two kinds of agents differed by their dynamics and the fractional-order a satisfies 0 < α < 2. Distributed state feedback consensus protocols are constructed for the two kinds of agents, respectively. Based on the Kronecker product technique and the fractional-order stability theory, sufficient conditions are derived to ensure the consensus of heterogeneous multi-agent systems in terms of linear matrix inequalities (LMIs). These can be solved numerically by LMI toolbox in Matlab. Finally, a simulation example is employed to validate the effectiveness of the theoretical results. © The Institution of Engineering and Technology 2013.


Zhang M.,Hubei University of Arts and Science
Mathematical Problems in Engineering | Year: 2014

This paper investigates the problems of finite-time stability and finite-time stabilization for nonlinear quadratic systems with jumps. The jump time sequences here are assumed to satisfy some given constraints. Based on Lyapunov function and a particular presentation of the quadratic terms, sufficient conditions for finite-time stability and finite-time stabilization are developed to a set containing bilinear matrix inequalities (BLIMs) and linear matrix inequalities (LMIs). Numerical examples are given to illustrate the effectiveness of the proposed methodology. © 2014 Minsong Zhang.

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