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Search Results: 1 - 10 of 39564 matches for " Jiang Gui-Rong "
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Periodic solutions and flip bifurcation in a linear impulsive system

Jiang Gui-Rong,Yang Qi-Gui,

中国物理 B , 2008,
Abstract: In this paper, the dynamical behaviour of a linear impulsive system is discussed both theoretically and numerically. The existence and the stability of period-one solution are discussed by using a discrete map. The conditions of existence for flip bifurcation are derived by using the centre manifold theorem and bifurcation theorem. The bifurcation analysis shows that chaotic solutions appear via a cascade of period-doubling in some interval of parameters. Moreover, the periodic solutions, the bifurcation diagram, and the chaotic attractor, which show their consistence with the theoretical analyses, are given in an example.
Bifurcation control and chaos in a linear impulsive system

Jiang Gui-Rong,Xu Bu-Gong,Yang Qi-Gui,

中国物理 B , 2009,
Abstract: Bifurcation control and the existence of chaos in a class of linear impulsive systems are discussed by means of both theoretical and numerical ways. Chaotic behaviour in the sense of Marotto's definition is rigorously proven. A linear impulsive controller, which does not result in any change in one period-1 solution of the original system, is proposed to control and anti-control chaos. The numerical results for chaotic attractor, route leading to chaos, chaos control, and chaos anti-control, which are illustrated with two examples, are in good agreement with the theoretical analysis.
Two-Frequency Grating Method used for Phase-Measuring in Profilometry

JIANG Gui-rong,HU Chang-hua,

实验力学 , 2002,
Abstract: A method of absolute phase determination in profilometry is proposed. In the method, two wrapped phases are acquired by using two different period gratings, the absolute phase at each pixel is then unwrapped by comparing the two wrapped phases. The main advantage of the method is that it is accurate, and that the absolute phase is obtained automatically.
A novel method of target detection based on the sea clutter

Jiang Bin,Wang Hong-Qiang,Li Xiang,Guo Gui-Rong,
姜 斌
,王宏强,黎 湘,郭桂蓉

物理学报 , 2006,
Abstract: Adopting the model of fractional Brownian motion, this paper presents the method of deducing Hurst exponent based on the observed sea clutter of S-band radar. Secondly the prediction technology of chaotic time series is studied based on memory-based predictor. Furthermore, adopting the method of support vector machine classifiers of the improved radial basis kernel function, this paper proposes a novel method of target detection based on the sea clutter. Thirdly, on the basis of observed sea clutter of S-band radar, the fractal dimension and the largest Lyapunov exponent are obtained, which proves its chaos and fractal characteristic. Finally, the computer simulation is carried out and the results prove the effective detection performance and noise tolerance.
Flower color inheritance and its influence to related characters in eggplant

LIN Gui-Rong,LI Bao-Jiang,WEI Yu-Tang,

遗传 , 2006,
Abstract: The inheritance of the white-flower and its influence to related characters in eggplant were studied with the white-flowered mutant of XIANLVQIE and its maternal bred.Result showed that the flower color was attributed to a couple of complete dominance genes.Purple color flower "Col" was dominant to the white "col".Compared with the purple-flowered strain,the white-flowered strain not only grew more blooming,but also had more stamens in one flower,less pollens in one anther and less seeds in one fruit.In the meanwhile,in white-flowered eggplants,microspore and fruit was bigger,and yield was higher than purple-flowered.The white-flowered strain could be used as a variety and the white-flowered character could be used as a marker to appraise purity of hybrid in eggplant.
Radar Feature Extraction of Micro-precession Ballistic Missile Warhead

Chen Hang-yong,Li Xiang,Guo Gui-rong,Jiang Bin,

电子与信息学报 , 2006,
Abstract: In this paper, the development of radar identification of ballistic missile warhead is summarized. Conceptions of micro-precession and micro-RCS are introduced. The aspect angle expression of a precession target is derived, and the relationship between micro-RCS and aspect angle is analyzed. Then the precession parameters and inertia ratio are estimated with micro-RCS. Inertia ratio is then used to discriminate warheads and decoys. Finally, a simulation result is provided.
The Analysis of Chaos and Fractal Characteristic Based on The Observed Sea Clutter of S-Band Radar

Jiang Bin,Wang Hong-qiang,Li Xiang,Guo Gui-rong,

电子与信息学报 , 2007,
Abstract: The sea clutter of S-band radar shows nonlinearities and time variation of its spectrum. However, the spectrum analysis method cannot reflect the evolution of the sea clutter of S-band radar in time domain. Adopting the model of Fractional Brownian Motion (FBM), this paper deduces Hurst exponent for the first time based on the observed data. Furthermore, the fractal dimension of the S-band sea clutter is also deduced. Then the largest Lyapunov exponent is obtained by Rosenstein method, which proves its chaos and fractal characteristic. Finally, the computer simulation is processed and the results prove the validity and veracity of the conclusion proposed in this paper. This conclusion provides a new approach for target detection with the S-band sea radar.
Functional Characterizations of Chemosensory Proteins of the Alfalfa Plant Bug Adelphocoris lineolatus Indicate Their Involvement in Host Recognition
Shao-Hua Gu, Song-Ying Wang, Xue-Ying Zhang, Ping Ji, Jing-Tao Liu, Gui-Rong Wang, Kong-Ming Wu, Yu-Yuan Guo, Jing-Jiang Zhou, Yong-Jun Zhang
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0042871
Abstract: Insect chemosensory proteins (CSPs) have been proposed to capture and transport hydrophobic chemicals from air to olfactory receptors in the lymph of antennal chemosensilla. They may represent a new class of soluble carrier protein involved in insect chemoreception. However, their specific functional roles in insect chemoreception have not been fully elucidated. In this study, we report for the first time three novel CSP genes (AlinCSP1-3) of the alfalfa plant bug Adelphocoris lineolatus (Goeze) by screening the antennal cDNA library. The qRT-PCR examinations of the transcript levels revealed that all three genes (AlinCSP1-3) are mainly expressed in the antennae. Interestingly, these CSP genes AlinCSP1-3 are also highly expressed in the 5th instar nymphs, suggesting a proposed function of these CSP proteins (AlinCSP1-3) in the olfactory reception and in maintaining particular life activities into the adult stage. Using bacterial expression system, the three CSP proteins were expressed and purified. For the first time we characterized the types of sensilla in the antennae of the plant bug using scanning electron microscopy (SEM). Immunocytochemistry analysis indicated that the CSP proteins were expressed in the pheromone-sensitive sensilla trichodea and general odorant-sensitive sensilla basiconica, providing further evidence of their involvement in chemoreception. The antennal activity of 55 host-related semiochemicals and sex pheromone compounds in the host location and mate selection behavior of A. lineolatus was investigated using electroantennogram (EAG), and the binding affinities of these chemicals to the three CSPs (AlinCSP1-3) were measured using fluorescent binding assays. The results showed several host-related semiochemicals, (Z)-3-hexen-1-ol, (E)-2-hexen-1-al and valeraldehyde, have a high binding affinity with AlinCSP1-3 and can elicit significant high EAG responses of A. lineolatus antennae. Our studies indicate the three antennae-biased CSPs may mediate host recognition in the alfalfa plant bug A. lineolatus.
Human prion disease with a G114V mutation and epidemiological studies in a Chinese family: a case series
Jing Ye, Jun Han, Qi Shi, Bao-Yun Zhang, Gui-Rong Wang, Chan Tian, Chen Gao, Jian-Min Chen, Cun-Jiang Li, Zheng Liu, Xian-Zhang Li, Lai-Zhong Zhang, Xiao-Ping Dong
Journal of Medical Case Reports , 2008, DOI: 10.1186/1752-1947-2-331
Abstract: A 47-year-old Han-Chinese woman was hospitalized with a 2-year history of progressive dementia, tiredness, lethargy and mild difficulty in falling asleep. On neurological examination, there was severe apathy, spontaneous myoclonus of the lower limbs, generalized hyperreflexia and bilateral Babinski signs. A missense mutation (T to G) was identified at the position of nt 341 in one PRNP allele, leading to a change from glycine (Gly) to valine (Val) at codon 114. PK-resistant PrPSc was detected in brain tissues by Western blotting and immunohistochemical assays. Information on pedigree was collected notably by interviews with family members. A further four suspected patients in five consecutive generations of the family have been identified. One of them was hospitalized for progressive memory impairment at the age of 32. On examination, he had impairment of memory, calculation and comprehension, mild ataxia of the limbs, tremor and a left Babinski sign. He is still alive.This family with G114V inherited prion disease is the first to be described in China and represents the second family worldwide in which this mutation has been identified. Three other suspected cases have been retrospectively identified in this family, and a further case with suggestive clinical manifestations has been shown by gene sequencing to have the causal mutation.Transmissible spongiform encephalopathies (TSEs) are a group of neurodegenerative diseases of the central nervous system (CNS). The best known of human forms of TSE, Creutzfeldt-Jakob diseases (CJD), are classified into three subtypes, sporadic CJD (sCJD), iatrogenic CJD (iCJD), and genetic or familial CJD (gCJD or fCJD) [1]. Hereditary forms of human TSE in which mutations in the prion protein gene (PRNP) predispose to disease include fCJD, Gerstmann-Str?ussler-Scheinker syndrome (GSS) and fatal familial insomnia (FFI) [2].To date, about 55 mutations associated with or directly linked to human TSEs have been identified [3]. Here we r
Genes involved in spermatogenesis

GE Shao-Qin,KANG Xian-Jiang,LIU Gui-Rong,MU Shu-Mei,

遗传 , 2008,
Abstract: During mammalian spermatogenesis, primordial germ cells develop into spermatogonia, giving rise to spermatocytes that undergo two meiotic divisions to become round spermatids. These cells differentiate into spermatozoa during spermiogenesis. Spermatogenesis is a complex process of cell differentiation controlled by many factors, among which gene regulation in the spermatogenic cells plays a pivotal role. Genes important for male gametogenesis involved in highly con-served landmark events such as meiotic recombination, formation of the synaptonemal complex, sister chromatid cohesion, spermiogenesis during postmeiotic stages, and checkpoints and factors required for the meiotic cell cycle. Spermatogenesis is characterized by phase-specific expression of many genes exclusively expressed in the spermatogenic cells. With the development and application of technologies like gene cloning, gene expression and functional characterization, many spermatogenesis-related genes have been found in the past few years, and some of them have been proved to play an important role in spermatogenesis. Here, we review the advances in this field with an emphasis on spermatogenesis-associated genes such as cyclins, proto-oncogenes, azoospermia factor genes, cytoskeleton genes, heat shock genes, nucleoprotein transition genes, centrin genes and apoptosis genes.
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