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| 1 | Synchronization of two electrically coupled inspiratory pacemaker neurons显示文摘Synchronization is considered to be a crucial mechanism that maintains respiratory rhythm.For understanding the effect of electrical coupling on the transition of the firing patterns and synchronization,we coupled two inspiratory pacemaker neurons together,and studied various synchronous behaviors between them.We firstly compared the bifurcation diagrams between the coupled neurons and single neuron,and found that the coupled neurons had a more complicated bifurcation mode.By increasing the coupling strength,the regular variation of phase differences was illustrated so that asynchronous and some synchronous states could be observed.These synchronous states were also shown in detail by phase portraits and firing series.In addition,we explored the ranges of different synchronous states,which attributed to different ranges of membrane capacitance and coupling strength. | YE WeiJie LIU ShenQuan LIU XuanLiang | 2014 | Science China(Technological Sciences)2014，57，5： | 6 |
| 2 | A proposal for the morphological classification and nomenclature of neurons显示文摘The morphological and functional characteristics of neurons are quite varied and complex. There is a need for a comprehensive approach for distinguishing and classifying neurons. Similar to the biological species classification system, this study proposes a morphological classification system for neurons based on principal component analysis. Based on four principal components of neuronal morphology derived from principal component analysis, a nomenclature system for neurons was obtained. This system can accurately distinguish between the same type of neuron from different species. | Rong Jiang Qiang Liu Quan Liu Shenquan Liu | 2011 | Neural Regeneration Research2011，6，25： | 3 |
| 3 | Morphology cluster and prediction of growth of human brain pyramidal neurons显示文摘Predicting neuron growth is valuable to understand the morphology of neurons, thus it is helpful in the research of neuron classification. This study sought to propose a new method of predicting the growth of human neurons using 1 907 sets of data in human brain pyramidal neurons obtained from the website of NeuroMorpho.Org. First, we analyzed neurons in a morphology field and used an expectation-maximization algorithm to specify the neurons into six clusters. Second, naive Bayes classifier was used to verify the accuracy of the expectation-maximization algorithm. Experiment results proved that the cluster groups here were efficient and feasible. Finally, a new method to rank the six expectation-maximization algorithm clustered classes was used in predicting the growth of human pyramidal neurons. | Chao Yu Zengxin Han Wencong Zeng Shenquan Liu | 2012 | Neural Regeneration Research2012，7，1： | 2 |
| 4 | High Prevalence of Eimeria Infection in Domestic Pigeons(Columba Livia Domestica) in Guangdong Province, Southern China显示文摘[Objective] This study aimed to make a survey of domestic pigeons for infection with Eimeria species of coccidia was conducted in Guangdong Province, southern China. [Method] A total of 244 fecal samples(102 from Huizhou, 83 from Jiangmen, 35 from Chaozhou and 24 from Guangzhou, respectively) in four pigeon breeding farms between June 2012 and March2013 were collected and examined microscopically. [Results] Eimeria oocysts were seen in 223(91.4%) fecal samples, with three species, namely E. labbeana, E.columbae and E. kapotei. E. labbeana was the most common species in Guangdong provinces with an overall prevalence of 91.4%, while a slightly lower incidence of E. columbae and E. kapotei species was detected with11.1% and 6.6%, representatively. The prevalence in different months varied ranging from 83.3% to 91.7%, with the highest prevalence in summer. Nestling groups showed obviously high infection than adult pigeons. [Conclusion] The present survey indicated the wide and severe prevalence of Eimeria infection in Guangdong domestic pigeons, which suggested that integrated measures should be taken to control and prevent coccidiosis of pigeons in this province. | Juan LI Xuhui LIN Caiyan WU Shenquan LIAO Nanshan QI Minna LV Mingfei SUN | 2016 | Agricultural Science & Technology2016，17，1： | 1 |
| 5 | Optimization Lve assisted extraction (UMAE) of polysaccharides from lnonotus obliquus and evaluation of its anti-tumor activities显示文摘 | CHEN Yiyong GU Xiaohong HUANG Shenquan | 2010 | International Journal of Biological Macromolecules2010，46，4： | 1 |
| 6 | Numerical simulation of neuronal spike patterns in a retinal network model显示文摘This study utilized a neuronal compartment model and NEURON software to study the effects of external light stimulation on retinal photoreceptors and spike patterns of neurons in a retinal network.Following light stimulation of different shapes and sizes,changes in the spike features of ganglion cells indicated that different shapes of light stimulation elicited different retinal responses.By manipulating the shape of light stimulation,we investigated the effects of the large number of electrical synapses existing between retinal neurons.Model simulation and analysis suggested that interplexiform cells play an important role in visual signal information processing in the retina,and the findings indicated that our constructed retinal network model was reliable and feasible.In addition,the simulation results demonstrated that ganglion cells exhibited a variety of spike patterns under different light stimulation sizes and different stimulation shapes,which reflect the functions of the retina in signal transmission and processing. | Lei Wang Shenquan Liu Shanxing Ou | 2011 | Neural Regeneration Research2011，6，16： | 1 |
| 7 | Functional characterizations of malonyl-CoA:acyl carrier protein transacylase (MCAT) in Eimeria tenella显示文摘 | Mingfei Sun Guan Zhu Zonghua Qin Caiyan Wu Minna Lv Shenquan Liao Nanshan Qi Mingquan Xie Jianping Cai | 2012 | Molecular & Biochemical Parasitology2012，，1： | 1 |
| 8 | Notes on De Bruijn Sequences显示文摘 | Xie Shenquan | 1987 | Discrete Applied Mathematics1987，16，2： | 1 |
| 9 | Notes on de bruijn sequences显示文摘 | Xie shenquan | 1987 | Discrete Applied Mathematics1987，，16： | 1 |
| 10 | Notes on de Bruijn Sequences显示文摘 | Xie Shenquan | 1987 | Discrete Applied Mathematics1987，16，2： | 1 |
| 11 | Pharmacokinetic interactions of drugs with St John' s wort显示文摘 | ZHOU Shufeng CHANT E PAN Shenquan | 2004 | Journal of Psychopharmacology2004，18，2： | 1 |
| 12 | Mode-independent fuzzy fault-tolerant variable sampling stabilization of nonlinear networked systems with both time-delay and random delays 显示文摘 | Feisheng Yang Huaguang Zhang Guotao Hui Shenquan Wang | 2012 | Fuzzy Sets and Systems (S0165-0114)2012，3，4： | 1 |
| 13 | Notes on De Bruijn sequences显示文摘 | Xie Shenquan | 1987 | Discrete Applied Mathematics1987，16，4： | 1 |
| 14 | Cyclopropanation of active methylene compounds with β-alkoxycarbonyl vinylsulfonium salts显示文摘An efficient synthesis of β-alkoxycarbonyl vinylsulfonium salts had been developed. Their reaction with indene-1,3-diones and other active methylene compounds provided cyclopropane carboxylates in good yields. A tentative reaction mechanism was proposed. | Shenquan Guo Niuniu Zhang Xiangzheng Tang Zhifeng Mao Xuejing Zhang Ming Yan Yining Xuan | 2019 | Chinese Chemical Letters2019，30，2： | 0 |
| 15 | Transitional function of DG to CA3 in the hippocampus显示文摘Using single cell channel model, the transmission features of CA3-DG network in the hippocampus are investigated. The influence of the stimulation on discharge pattern of pyramidal neurons is analyzed, which shows that it starts with period spiking discharges, followed by period-doubling bifurcation to chaos, and period 3 discharge evolving into chaos, and ultimately a period of bursting discharges. By the synaptic model, the CA3-DG network model is constructed, which analyzes the summation of postsynaptic currents in the network, the influence of postsynaptic current on discharge rhythm as well as the mechanism of bursting discharges. The strong capacity of spatiotemporal encoding in the network indicates the features of CA3 network during the information transmission process in the hippocampus. The modeling result with time delay of the synaptic transmission is in accordance with the experimental phenomena of action potential in the hippocampus. | Yan Chuankui Liu Shenquan | 2007 | Progress in Natural Science:Materials International2007，17，12： | 0 |
| 16 | SEMANTIC CONSTRAINT MODELER FOR 2D AND 3D GEOMETRY显示文摘Design changes for 2D & 3D geometry are the most important features in the process ofproduct design.Constraint modeling for variationl geometry based on geometric reasoning is one ofthe best approaches for this goal.However,it is difficult for the proposed systems to maintain orhandle the consistency and completeness of the constraint model of the design objects.To changethis situation,a semantic model and its control approach are presented,aiming at the integrationof the data,knowledge and method related to design objects.Aconstraint definition system for in-teractively defining the semantic model and a prototype modeler based on the semantic model arealso implemented to examine the idea which is extended to 3D geometric design too. | JIAO Guofang LIU Shenquan CAD Lab.,Institute of Computing Technology Academia Sinica,Beijing 100080,P.R.China | 1992 | Computer Aided Drafting,Design and Manufacturing1992，3，1： | 0 |
| 17 | Relaxed Stability Criteria for Time-Delay Systems:A Novel Quadratic Function Convex Approximation Approach显示文摘This paper develops a quadratic function convex approximation approach to deal with the negative definite problem of the quadratic function induced by stability analysis of linear systems with time-varying delays.By introducing two adjustable parameters and two free variables,a novel convex function greater than or equal to the quadratic function is constructed,regardless of the sign of the coefficient in the quadratic term.The developed lemma can also be degenerated into the existing quadratic function negative-determination(QFND)lemma and relaxed QFND lemma respectively,by setting two adjustable parameters and two free variables as some particular values.Moreover,for a linear system with time-varying delays,a relaxed stability criterion is established via our developed lemma,together with the quivalent reciprocal combination technique and the Bessel-Legendre inequality.As a result,the conservatism can be reduced via the proposed approach in the context of constructing Lyapunov-Krasovskii functionals for the stability analysis of linear time-varying delay systems.Finally,the superiority of our results is illustrated through three numerical examples. | Shenquan Wang Wenchengyu Ji Yulian Jiang Yanzheng Zhu Jian Sun | 2024 | IEEE/CAA Journal of Automatica Sinica2024，11，4： | 0 |
| 18 | Robust fault detection filter design for a class of time-delay systems via equivalent transformation显示文摘This paper is concerned with the robust fault detection filter (RFDF) design for a class of linear timeinvariant systems (LTISs) with output state time delays. Although existing results in literatures study the RFDF for timedelay systems, few is concerned with the output state time-delay systems. The basic idea of our study is to eliminate the time delays of system and transform it to a delay-free system (i.e., a linear time-invariant system without time delays) by the bicausal change of coordinates approach. Then, we design the RFDF for the delay-free LTIS, which is equivalent to the original system with time delays. We first introduce a class of systems with output state time delays, whose fault can be detected by using the RFDF design approach for delay-free systems. Then, since the RFDF design problem can be formulated as a standard H-infinity-model matching problem, it is solved by using H-infinity-optimization LMI techniques. In the last, the adaptive threshold of fault detection is chosen and an illustrative design example is used to demonstrate the validity of the design approach. | Jilie ZHANG Huaguang ZHANG Feisheng YANG Shenquan WANG | 2013 | 控制理论与应用(英文版)2013，11，1： | 0 |
| 19 | Effect of Fiber Volume Fraction on Longitudinal Tensile Properties of SiCf/Ti-6Al-4V Composites显示文摘The longitudinal tensile properties of SiC_f/Ti-6Al-4V composites with different fiber volume fractions were simulated by the Monte Carlo 2-D finite element model. The random distribution of fiber strength was expressed by the two-parameter Weibull function. Meanwhile, contact elements and birth-death elements were used to describe the interfacial sliding process after debonding and fiber breakage(or matrix cracking) respectively, which was realized by subroutine complied in ANSYS-APDL(ANSYS Parametric Design Language). The experimental results show that the yield stress and ultimate tensile strength of SiC_f/Ti-6Al-4V composites increase with increasing fiber volume fraction, while the corresponding strain of them is just on the contrary. In addition, almost the same failure mode is obtained in SiC_f/Ti-6Al-4V composites with various fiber volume fractions when the interfacial shear strength is fixed. Finally, the tensile strength predicted by finite element analysis is compared with that predicted by Global load-sharing model, Local load-sharing model and conventional rule of mixtures, thus drawing the conclusion that Local load-sharing model is very perfect for the prediction of the ultimate tensile strength. | 娄菊红 YANG Yanqing LIU Shenquan | 2017 | Journal of Wuhan University of Technology(Materials Science)2017，32，2： | 0 |
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