Time filter

Source Type

Tangshan, China

Chu J.-X.,North University of China | Wang Z.-L.,Tangshan Teachers College | Han S.-Y.,North University of China
Iranian Journal of Pharmaceutical Research | Year: 2011

Clinical data showed consumption of buckwheat played a very positive role in the relief of diabetes and its complications. The purpose of this study was to explore the effects and mechanisms of the overall flavonoids from buckwheat flowers and leaves (TFBFL) on renal damage in type 2 diabetes mellitus (T2DM) rats. Seventy male Wistar rats were selected. Ten rats were randomly allocated into a normal group and the other sixty were intragastrically injected with a lipid emulsion and small doses of alloxan to induce the T2DM model. T2DM inducement was judged by the fasting blood glucose (FBG) and oral glucose tolerance test (OGTT). Those whose FBG was ≥ 16.7 mmol/L and less tolerant to glucose were considered as being T2DM rats. These rats were then randomly divided into a groups termed: model (purified water, 5 mL.kg -1. d -1), BNPL (positive control) (Benazepril, 4 mg.kg -1. d -1), L-TFBFL (TFBFL 100 mg.kg -1. d -1), M-TFBFL (TBFL 200 mg.kg -1. d -1) and H-TFBFL (TFBFL 400 mg.kg -1. d -1). Each group then received medication for a period of 4 weeks. The normal rats were treated with purified water in a synchronous manner. Subsequently, FBG, plasma insulin (INS), OGTT, 24 h urinary protein output, blood and urinary creatinine content were assayed. Then the insulin sensitive index (ISI), bilateral kidney index, and creatinine clearance rate (Ccr) were calculated. Renal morphological changes and expression of protein tyrosine phosphatase 1B (PTP1B) in the kidneys were observed. TFBFL lowered FBG, improved insulin resistance, caused Ccr, and renal morphological changes, down-regulated the expression of PTP1B in T2DM rats and showed dose-dependence. TFBFL had a significant protective effect on renal damage in T2DM rats. This effect may be due to lowering blood glucose and diminishing renal damage by inhibiting PTP1B expression. © 2011 by School of Pharmacy. Source

Li L.S.,Tangshan Teachers College
Advanced Materials Research | Year: 2013

In the article, three kinds of swarm intelligence optimization algorithm are discussed including the ant colony optimization (ACO) algorithm, the particle swarm optimization (PSO) algorithm and the shuffled frog leaping algorithm (SFLA). The principle, development and application of each algorithm is introduced. Finally, an example of TSP is used to test the performance of ACO. © (2013) Trans Tech Publications, Switzerland. Source

Zheng Z.,Tangshan Teachers College
Advanced Materials Research | Year: 2013

In this paper, we propose an algorithm for cluster generating and service discovery based on service popularity in wireless community network, which makes full use of the imbalance of the service request in the network, leading to that the requests could be replied quickly in shorter time. At the same time, the algorithm could adapt well to the wireless environment and incur less update information when the topology is changed. According to the simulation in the OMNET++, our algorithm performs better than the flooding and CRP in several aspects. © (2013) Trans Tech Publications, Switzerland. Source

Li Y.,Tangshan Teachers College
ICACTE 2010 - 2010 3rd International Conference on Advanced Computer Theory and Engineering, Proceedings | Year: 2010

Remote education is a new type of education mode in comparison with the conventional face-to-face education. It enables the teacher to teach students at remote sites by live broadcasting the teaching course over the network, but students usually participate in the course with the need of collaboratively referring and operating the 3D geometric models of educational objects in the live video scene of real environment. Augmented Reality (AR) technology has the potential to overcome these deficiencies and enable more natural communication between teacher and students. This paper surveys the functions of AR in education and describes a shared AR environment for remote education (ARERE) to build a typical AR-based remote education system, which overlays computer generated educational information on the live video scene of real education locale and shares the augmented video scene among all participant students, providing the opportunity for students to interactively and collaboratively participate in the AR-based study environment. The potential of ARERE is illustrated through a simulation scenario and the results prove that it yields superior quality compared to the traditional form of remote education. © 2010 IEEE. Source

Liu F.L.,Northeastern University China | Guo S.M.,Northeastern University China | Zhou Q.P.,Tangshan Teachers College | Du R.Y.,Northeastern University China
Progress In Electromagnetics Research C | Year: 2012

Wideband spectrum sensing is an essential functionality for cognitive radio networks. It enables cognitive radios to detect spectral holes over a wideband channel and to opportunistically use under-utilized frequency bands without causing harmful interference to primary networks. However, most of the work on wideband spectrum sensing presented in the literature employ the Nyquist sampling which requires very high sampling rates and acquisition costs. In this paper, a new wideband spectrum sensing algorithm based on compressed sensing theory is presented. The proposed method gives an effective sparse signal representation method for the wideband spectrum sensing problem. Thus, the presented method can effectively detect all spectral holes by finding the sparse coefficients. At the same time, the signal sampling rate and acquisition costs can be substantially reduced by using the compressive sampling technique. Simulation results testify the effectiveness of the proposed approach even in low signal-to-noise (SNR) cases. Source

Discover hidden collaborations