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Search Results: 1 - 10 of 78945 matches for " Jianjun Chen "
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Effects of Cangfudaotan Tang on Expression of Organic Anion Transporting Polypeptide (oatp2b1) in Liver and Kidney Tissues of Rats with Phlegm Dampness Type Polycystic Ovary Syndrome (PCOS)  [PDF]
Ke Chen, Aizhen Pan, Jianjun Li, Kefang Chen, Xiangping Hou
Chinese Medicine (CM) , 2016, DOI: 10.4236/cm.2016.74016
Abstract: Objective: To explore the effect of Cangfudaotan Tang on phlegm dampness type of PCOS and the role of oatp2b1 in transportation and transformation of phlegm dampness. Methods: 36 SD female rats were randomly divided into three groups: blank control group, model group and Cangfudaotan Tang group, 12 cases in each one. After PCOS rat models were made, rats of Cangfudaotan Tang group were treated with Cangfudaotan Tang (1.42 g/kg/d) by intragastric administration for 14 days; blank control and model group were given with isodose saline. The expression of oatp2b1 mRNA/Protein in liver and kidney tissues was measured and the level of testosterone (T), follicle stimulating hormone(FSH), estradiol (E2), luteinizing hormone(LH), Serum total cholesterol (TG), Triacylglycerols (TC), high density lipoprotein cholesterol (HDL-C) and low density lipoprotein cholesterol (LDL-C) were detected at the same time. Results: Compared with blank control group, the expression of oatp2b1 mRNA and the level of TC, TG, LDL, LH, FSH, T in model group were significantly increased (P < 0. 05), while the level of HDL was significantly decreased (P < 0. 05); compared with model group, the expression of oatp2b1 mRNA and the level of TC, TG, LDL in Cangfudaotan Tang group were significantly lowered (P < 0.05); the level of HDL was significantly higher; the oatp2b1 protein in kidney and liver tissues had different degrees of expression, while there was no statistical significance among the three groups. Conclusions: Oatp2b1 might be one of the material bases participating in transportation and transformation of phlegmy dampness. The mechanism of Cangfudaotan Tang treating phlegm dampness type of PCOS may be achieved by regulating the expression of oatp2b1.
Dynamical Analysis of a Delayed Predator-Prey System with Birth Pulse and Impulsive Harvesting at Different Moments
Jiao Jianjun,Chen Lansun
Advances in Difference Equations , 2010,
Abstract: We consider a delayed Holling type II predator-prey system with birth pulse and impulsive harvesting on predator population at different moments. Firstly, we prove that all solutions of the investigated system are uniformly ultimately bounded. Secondly, the conditions of the globally attractive prey-extinction boundary periodic solution of the investigated system are obtained. Finally, the permanence of the investigated system is also obtained. Our results provide reliable tactic basis for the practical biological economics management.
Dynamical Analysis of a Delayed Predator-Prey System with Birth Pulse and Impulsive Harvesting at Different Moments
Jianjun Jiao,Lansun Chen
Advances in Difference Equations , 2010, DOI: 10.1155/2010/954684
Abstract:
An Empirical Analysis of the Relationship Among the Service Quality, Customer Satisfaction and Loyalty of High Speed Railway Based on Strctural Equation Model
Canming CAO,Jianjun CHEN
Canadian Social Science , 2011, DOI: 10.3968/j.css.1923669720110704.z25
Abstract: China has longest mileage of high speed railway in the world, and high speed railway has been one of the main traffic travel choices of Chinese people. This paper analyzes the relationship among the service quality, customer satisfaction and loyalty degree of high speed railway by adopting the structural equation model as analytical method with the high speed railway from Shanghai to Nanjing as case study. This paper firstly establishes the model of customer satisfaction on the high speed railway, and develops the measurement table of the customer satisfaction. The research results manifest: the reliability and validity of the survey data about the model of the customer satisfaction on the high speed railway have been tested and verified. As to the hypothesis, except the hypothesis “from customer satisfaction to loyalty degree” and “from customer complaints to loyalty degree”, others have been well tested and verified. The results show that the service quality of the high speed railway has the greatest influence on the company image, and it has direct and positive influence on the customer satisfaction. The image of the high speed railway company has direct and positive influence on the customer satisfaction, and it has indirect influence on the customer complaints and loyalty degree. The customer satisfaction on the high speed railway has indirect influence on the customer loyalty degree, and it has direct influence on the customer complaints. The customer complaints will not greatly influence the customer loyalty degree. Key words: Structural equation model; Intercity high speed railway; Service quality; Customer satisfaction; Customer loyalty Résumé: La Chine a la plus longue de kilométrage de voies ferrées à grande vitesse dans le monde, et la voie ferrée à grande vitesse a été l'un des principaux choix de voyage de la circulation du peuple chinois. Cet article analyse la relation entre la satisfaction des clients un service de qualité, et le degré de fidélisation de la grande vitesse ferroviaire en adoptant le modèle d'équation structurelle que méthode d'analyse avec la voie ferrée à grande vitesse entre Shanghai et Nanjing comme étude de cas. Ce document établit tout d'abord le modèle de la satisfaction du client sur la voie ferrée à grande vitesse, et développe la table de mesure de la satisfaction client. Le manifeste de résultats de recherche: la fiabilité et la validité des données d'une enquête sur le modèle de la satisfaction client sur le chemin de fer à grande vitesse ont été testées et vérifiées. Quant à l'hypothèse, à l'exception de l'hyp
Development of a System to Assist Automatic Translation of Hand-Drawn Maps into Tactile Graphics and Its Usability Evaluation
Jianjun Chen,Noboru Takagi
Advances in Fuzzy Systems , 2014, DOI: 10.1155/2014/357380
Abstract: Tactile graphics are images that use raised surfaces so that a visually impaired person can feel them. Tactile maps are used by blind and partially sighted people when navigating around an environment, and they are also used prior to a visit for orientation purposes. Since the ability to read tactile graphics deeply depends on individuals, providing tactile graphics individually is needed. This implies that producing tactile graphics should be as simple as possible. Based on this background, we are developing a system for automating production of tactile maps from hand-drawn figures. In this paper, we first present a pattern recognition method for hand-drawn maps. The usability of our system is then evaluated by comparing it with the two different methods to produce tactile graphics. 1. Introduction Producing tactile maps is an important effort to bring blind people to more self-supported life. There have been many studies of computer-aided systems in order to assist the production of tactile graphics [1–6]. Tactile map automated creation system (TMACS) [2, 3], for example, has been developed to produce tactile maps automatically. It is a web application and produces the digital file for a tactile map from the information about two places: departure place and destination. TMACS assumes that users can be blind, and so it produces the tactile map automatically from the map database if a user only provides a departure place and destination to the system. However, tactile maps produced by TMACS are sometimes difficult to read for the blind because it is possible to include unnecessary information in the tactile maps. Further, Geospatial Information Authority of Japan has also developed a tactile map production system [4]. This system assumes that users are sighted people, and it is totally provided as a GUI application. Operating this GUI application is not easy for users who are not familiar with computers. Based on the background above, we are now developing a system for automating production of tactile maps. In the tactile map production method using our system, a sighted user first draws manually a hand-drawn map using a pencil and paper, and the map is then converted to a digital image using an image scanner or a digital camera. Finally, by using our system, the digital image is recognized and translated into digital files which are available to produce the tactile maps. Our system chooses the Edel [7] and scalable vector graphics (SVG) [8] documents as the output file formats. Here, Edel is a software system to create digital files available to
Groebner-Shirshov Basis for the Chinese Monoid
Yuqun Chen,Jianjun Qiu
Mathematics , 2008,
Abstract: In this paper, a Groebner-Shirshov basis for the Chinese monoid is obtained and an algorithm for the normal form of the Chinese monoid is given.
Composition-Diamond lemma for $λ$-differential associative algebras with multiple operators
Jianjun Qiu,Yuqun Chen
Mathematics , 2009, DOI: 10.1142/S0219498810003859
Abstract: In this paper, we establish the Composition-Diamond lemma for $\lambda$-differential associative algebras over a field $K $ with multiple operators. As applications, we obtain Gr\"{o}bner-Shirshov bases of free $\lambda$-differential Rota-Baxter algebras. In particular, linear bases of free $\lambda$-differential Rota-Baxter algebras are obtained and consequently, the free $\lambda$-differential Rota-Baxter algebras are constructed by words.
Gr?bner-Shirshov basis for the finitely presented algebras defined by permutation relations of symmetric type
Jianjun Qiu,Yuqun Chen
Mathematics , 2014,
Abstract: In this paper, we give a Gr\"obner-Shirshov basis for the finitely presented semigroup algebra $\mathbf{k}[S_n(Sym_n)]$ defined by permutation relations of symmetric type. As an application, by the Composition-Diamond Lemma, we obtain normal forms of elements of momoid $S_n(Sym_n)$, which gives an answer to an open problem posted by F. Ced\'o, E. Jespers and J. Okni\'nski [7] for the symmetric group case.
Discrete Symmetry in Relativistic Quantum Mechanics  [PDF]
Guang-jiong Ni, Suqing Chen, Jianjun Xu
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.45094
Abstract:

EPR experiment on \"\"system in 1998 [1] strongly hints that one should use operators \"\" and \"\" for the wavefunction (WF) of antiparticle. Further analysis on Klein-Gordon (KG) equation reveals that there is a discrete symmetry hiding in relativistic quantum mechanics (RQM) that PT=C. Here PT means the (newly defined) combined space-time inversion (with x-x,t-t), while C the transformation of WF Ψ between particle and its antiparticle whose definition is just residing in the above symmetry. After combining with Feshbach-Villars (FV) dissociation of KG equation (Ψ=φ+x) [2], this discrete symmetry can be rigorously reformulated by the invariance of coupling equation of φ and x under either the combined space-time inversion PT or the mass inversion (m

The Effect of Cangfudaotan Tang on Expression of Organic Anion Transporting Polypeptide (oatp4a1) in Rat Ovary and Uterus Tissues of Obese PCOS  [PDF]
Huachao Mai, Jianjun Li, Kefang Chen, Xiangping Hou, Aizhen Pan
Chinese Medicine (CM) , 2016, DOI: 10.4236/cm.2016.71005
Abstract: Objective: The objective is to explore the effect of Cangfudaotan Tang on expression of organic anion transporting polypeptide (oatp4a1) in ovary and uterus tissues in rats with obese polycystic ovary syndrome. Methods: Poresky method and high fat diet were used to build obese PCOS rat models. The PCOS rat models were randomized into model control group, metformin group, the low dose Cangfudaotan Tang group and the high dose Cangfudaotan Tang group with 10 rats in each group. The metformin group was treated with metformin 43 mg/100g intragastric administration for two weeks, and the high dose Cangfudaotan Tang group and the low dose Cangfudaotan Tang group were given Cangfudaotan Tang 5.68 g/kg/d and 1.42 g/kg/d intragastric administration respectively for two weeks. Then the rats were anesthetized. Each rat was taken ovary and uterus tissues, and the expression of oatp4a1 Protein was detected in the tissues by using Western Blot techniques. The level of sex hormones as testosterone (T), follicle stimulating hormone (FSH), estradiol (E2), and luteinizing hormone (LH) and insulin resistance were detected by ELLISA techniques. Results: The expression of oatp4a1 in rat ovary and uterus tissue of model group was down-regulated compared to blank control group (p ≤ 0.05). The expression of oatp4a1 in ovary and uterus tissue of treatment group was up-regulated compared to model group (p < 0.05). The metformin group and the high does Cangfudaotan group were more apparent, while there was no statistical significance between the metformin group and the high dose Cangfudaotan group. Moreover, the model PCOS group had higher serum T, LH/FSH (p < 0.01) and lower E2 level (p < 0.01) compared to normal group. After treatment, serum T, LH (p < 0.01) and LH/FSH (P < 0.01) were decreased in metformin group and Cangfudaotan Tang group (p < 0.01) compared with those in PCOS model group. However, there was no significantly difference in serum T, LH, LH/FSH and E2 between metformin group and the high dose Cangfudaotan Tang group. Conclusion: The mechanism of Cangfudaotan Tang treatment of obese PCOS may be correlated to oatp4a1 by transportation and transformation of phlegmy dampness and regulating the levels of sex hormone.
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