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Search Results: 1 - 10 of 44955 matches for " LONG Xiao "
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catena-Poly[[[aquachloridomanganese(II)]-bis[μ-1,1′-(oxydi-p-phenylene)di-1H-imidazole-κ2N3:N3′]] chloride dimethylformamide monosolvate monohydrate]
Xiao-Long Mu
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536810054383
Abstract: The title coordination polymer, {[MnCl(C18H14N4O)2(H2O)]Cl·C3H7NO·H2O}n, obtained by the solvothermal reaction of BIDPE and manganese(II) salt in H2O/DMF (DMF is dimethylformamide), is composed of a chain of [Mn2(BIDPE)2] [BIDPE is 1,1′-(oxydi-p-phenylene)di-1H-imidazole] metallocyclic rings that exhibit inversion symmetry. The coordination about the Mn(II) ions is distorted octahedral with a MnClN4O coordination set. In the crystal, the polymeric chains are linked by O—H...Cl hydrogen bonds, forming a two-dimensional network parallel to (100). A number of C—H...Cl and C—H...O interactions are also present.
Conditioning for State Space Reduction in Program Model Checking
Long Yuejin,Xiao Jianyu
Information Technology Journal , 2009,
Abstract: This study aim to propose a scheme of applying program conditioning to reduce state space for program model checking, in which the antecedent of a implication form in LTL formula of program property is taken as the constrained condition of program conditioning and the statements irrelevant to satisfiability of the property are deleted. Analysis and experiment show that not only this scheme can effectively reduce a program’s state, but also it can preserve the program’s property.
Efficacy of Chinese herbal medicine Mailuo Shutong Granule and Hirudoid cream for chronic venous disorder-induced pigmentation in lower extremities: a prospective, randomized controlled trial
Xiao-long Wei
Zhong Xi Yi Jie He Xue Bao , 2011,
Abstract: Background: Chronic venous disorder (CVD) of the lower extremities generally induces dermatologic complications in lower extremity skin, such as hyperpigmentation. If not treated effectively, the lesions may develop into severe outcomes, including dermal ulcer or necrosis.Objective: To evaluate the clinical efficacy of Mailuo Shutong Granule, a compound traditional Chinese herbal medicine, and Hirudoid cream (heparinoid), in treatment of patients with dermal hyperpigmentation of skin caused by CVD.Design, setting, participants and interventions: A total of 108 CVD outpatients with pigmentation from Department of Vascular Surgery, Shanghai Changhai Hospital were randomly divided into Mailuo Shutong group, Hirudoid group and combined therapy group, with 36 patients in each group. Patients in the Mailuo Shutong group and the Hirudoid group were treated with Mailuo Shutong Granule or Hirudoid cream, respectively, while those in the combined therapy group were treated with Mailuo Shutong Granule plus Hirudoid cream. They were all treated for 28 d.Main outcome measures: Before and after the 28-day treatment, area and average gray value of pigmentation lesions were measured and evaluated.Results: Thirty-three cases in the Mailuo Shutong group, 34 cases in the Hirudoid group and 31 cases in the combined therapy group were included for analysis. After treatment, area of pigmentation decreased and average gray value of pigmentation declined in all the 3 groups (P<0.05). The reductions of area and average gray value in the combined therapy group were more significant than those in the Mailuo Shutong group and Hirudoid group (P<0.05). There were no differences in improvement of pigmentation between the Mailuo Shutong group and Hirudoid group (P>0.05).Conclusion: These data suggest that both Mailuo Shutong Granule and Hirudoid cream can improve CVD-induced hyperpigmentation, and combined treatment of the two drugs results in better clinical efficacy.
Critical volume fraction and critical size for a cluster to nucleate
Lianfeng Long,Changming Xiao
Physics , 2009,
Abstract: Combined with the principle of entropy maximum and CS state equation, the critical size for a cluster to nucleate then the critical volume fraction of a phase transition is determined in this paper, and our result is in good agreement with the experiments. Furthermore, no parameter is introduced in the discussion.
Finite-Time Consensus Problems for Networks of Dynamic Agents
Long Wang,Feng Xiao
Mathematics , 2007,
Abstract: In this paper, finite-time state consensus problems for continuous-time multi-agent systems are discussed, and two distributive protocols, which ensure that the states of agents reach an agreement in a finite time, are presented. By employing the method of finite-time Lyapunov functions, we derive conditions that guarantee the two protocols to solve the finite-time consensus problems respectively. Moreover, one of the two protocols solves the finite-time weighted-average consensus problem and can be successively applied to the systems with switching topology. Upper bounds of convergence times are also established. Simulations are presented to show the effectiveness of our results.
State Agreement in Finite Time
Feng Xiao,Long Wang
Mathematics , 2006,
Abstract: In this paper, we consider finite-time state agreement problems for continuous-time multi-agent systems and propose two protocols, which ensure that states of agents reach an agreement in a finite time. Moreover, the second protocol solves the finite-time average-agreement problem and can be applied to the systems with switching topology. Upper bounds of convergence time are also established. Examples are presented to show the effectiveness of our results.
Asynchronous Consensus in Continuous-Time Multi-Agent Systems With Switching Topology and Time-Varying Delays
Feng Xiao,Long Wang
Mathematics , 2006,
Abstract: In this paper, we study asynchronous consensus problems of continuous-time multi-agent systems with discontinuous information transmission. The proposed consensus control strategy is implemented only based on the state information at some discrete times of each agent's neighbors. The asynchronization means that each agent's update times, at which the agent adjusts its dynamics, are independent of others'. Furthermore, it is assumed that the communication topology among agents is time-dependent and the information transmission is with bounded time-varying delays. If the union of the communication topology across any time interval with some given length contains a spanning tree, the consensus problem is shown to be solvable. The analysis tool developed in this paper is based on the nonnegative matrix theory and graph theory. The main contribution of this paper is to provide a valid distributed consensus algorithm that overcomes the difficulties caused by unreliable communication channels, such as intermittent information transmission, switching communication topology, and time-varying communication delays, and therefore has its obvious practical applications. Simulation examples are provided to demonstrate the effectiveness of our theoretical results.
Topological structure of non-contractible loop space and closed geodesics on real projective spaces with odd dimensions
Yuming Xiao,Yiming Long
Mathematics , 2015,
Abstract: In this paper, we use Chas-Sullivan theory on loop homology and Leray-Serre spectral sequence to investigate the topological structure of the non-contractible component of the free loop space on the real projective spaces with odd dimensions. Then we apply the result to get the resonance identity of non-contractible homologically visible prime closed geodesics on such spaces provided the total number of distinct prime closed geodesics is finite.
Teaching an Environmental Chemistry Experiment—A Case Study  [PDF]
Lin Zhang, Long Chen, Mei Xiao, Feng Wu, Nansheng Deng
Creative Education (CE) , 2012, DOI: 10.4236/ce.2012.34088
Abstract: Here we present the significance, content, results, and teaching effect of a selective self-design experiment – a simple test for measuring the emission spectra of artificial light sources, and discuss its function and potential problems in an environmental chemistry class for undergraduate students. Also, we propose several ways to reform experimental teaching, and provide references to other experimental courses.
Correlation Analysis between Mean Corpuscular Hemoglobin and Mean Corpuscular Volume for Thalassemia Screening in Large Population  [PDF]
Xiaoli Long, Junyu Fang, Lijun Yao, Qingqing Xiao, Tao Pan
American Journal of Analytical Chemistry (AJAC) , 2014, DOI: 10.4236/ajac.2014.514098
Abstract: Correlation analysis between the hematological parameters mean corpuscular hemoglobin (MCH) and mean corpuscular volume (MCV) for thalassemia screening in large population was discussed. A total of 4920 peripheral blood samples of reproductive age persons were collected from Guangdong province of China. The hematological parameters MCH and MCV values of samples were first measured, and then the DNA analyses for thalassemia were conducted. All samples were composed by 4463 non-thalassemia and 457 thalassemia, and among 457 thalassemia samples, 311 were α-thalassemia, 133 were β-thalassemia, and 13 were α & β-thalassemia. In accordance with non-thalassemia, thalassemia, α-thalassemia, β-thalassemia, α & β-thalassemia and the entire group itself, a total of six sample groups were divided. The corresponding correlation coefficients between the measured MCH and MCV values for the six sample groups were 0.880, 0.968, 0.966, 0.962, 0.980 and 0.965 respectively. For the thalassemia carriers, highly significant correlation between MCH and MCV were observed. The fitting equations between MCH and MCV values were also obtained. The results indicated that the feasibility for thalassemia screening using MCV or MCH independently as parameter, and provided suitable strategy to select parameters and models for thalassemia screening in large population.
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