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Search Results: 1 - 10 of 126247 matches for " Dan Wang "
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Path-Integral Derivation of the Transverse Axial Vector and Vector Anomalies in QED  [PDF]
Dan Wang, Aidong Bao
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.41007
Abstract: It is shown that a novel anomaly associated with transverse Ward-Takahashi identity of axial vector current in QED is derived by using Fujikawa’s method in the path-integral formulation of quantum field theory. Also it is verified that there is no transverse anomaly for the vector current.
Research on Social Responsibility Information Disclosure of Listed Dairy Companies in China  [PDF]
Dan Wang, Feixian Liu
Journal of Service Science and Management (JSSM) , 2018, DOI: 10.4236/jssm.2018.113022
Abstract: Taking the report data of 10 listed dairy companies in China in 2016 as the research sample, it is found that the disclosure subject of New Hope Group is New Hope Liuhe Co., Ltd. and its subsidiaries, and it is considered that its report hardly involves dairy industry activities. Therefore, it was excluded from the valid sample; Feihe Group was listed in New York, USA, and could not obtain the relevant report, so it was excluded as a valid sample. In this paper, the situation of social responsibility information disclosure is analyzed in detail, and the problems existing in the social responsibility information disclosure of the whole industry are picked out by typical individuals. And from three aspects of the information disclosure content, the standard, and the function, the countermeasure and the suggestion are put forward.
The Advice of Training Application-Oriented Undergraduates of Local Colleges in Hebei Province to Suit Regional Economic Development  [PDF]
Yi Yang, Dan Wang
Creative Education (CE) , 2019, DOI: 10.4236/ce.2019.103037
Abstract: Local colleges are the driving force of regional economic development, and it is an important duty for local undergraduate colleges to train application-oriented undergraduates in order to make them adapt to regional economic development. This essay analyses the necessity of assuring that teaching targets should be used to train application-oriented undergraduates, and presents how to set up the mode of training application-oriented undergraduates of local colleges to make them adapt to regional economic development under the principle of talent cultivation.
Studies on the Electrochemical Behaviour of Hydroquinone at L-cysteine Self-Assembled Monolayers Modified Gold Electrode
Shengfu Wang,Dan Du
Sensors , 2002, DOI: 10.3390/s20200041
Abstract: L-Cysteine is combined onto gold electrode to form a self-assembled monolayers modified electrode (L-Cys/Au SAMs) by taking advantage of strong sulfur-gold interaction. ATR-FTIR, SEM, cyclic voltammetry (CV) and impedance were used for the characterization of the film. It shows excellent stability upon voltametric scanning and a good voltametric response towards hydroquinone with the potential ranged from 0.8 to –0.2 V (vs.SCE) in 0.5M HAc-NaAc buffer solution (pH 4.8). The oxidation potential of hydroquinone on the modified electrode shifted negatively about 330 mV as compared with the bare gold electrode. The plot of catalytic current vs.its concentration has a good linear relation in the range of 2.0×10-6~2.0×10-4M with the correlation coefficient of 0.9986 and the detection limit of 4.0×10-7M by different pulse voltammetry (DPV). Mechanism for the electrocatalytical process has been studied.
From economic prosperity to ecological sustainability──A theoretical and practical concern of sustainable development in China
Wang Rusong,Hu Dan
环境科学学报(英文版) , 1994,
Abstract: Fromeconomicprosperitytoecologicalsustainability──AtheoreticalandpracticalconcernofsustainabledevelopmentinChinaWangRusong,Hu...
Investigation on Building a Simulated Skill Training Platform for the E-commerce Students and Teachers
Dan Wang,Wenhao Li
International Journal of Modern Education and Computer Science , 2009,
Abstract: To determine the need for simulated training of e-commerce activities prior to working in the real environment, we studied the views of undergraduates and college teachers from several aspects. Two hundred university students while also 200 college teachers were asked what the real problem was when they learned or taught in the e-commerce courses. Next, they were surveyed to inquire what knowledge they really need when students go to work positions and what type of job do they expect to have. Finally, they were asked whether using a simulated training platform would be beneficial. Through analysis, the aspects which are contained above we know that simulation should be incorporated into the education of e-commerce to students as a tool to practice their hands-on abilities prior to working. And from the survey we also obtain some useful information and references that may help us to design our electronic commerce training platform.
Salvia Miltiorrhiza injection relieves peritoneal dialysis solution-induced injuries of peritoneal structure and function in rats
Dan ZHANG,Yi WANG
Zhong Xi Yi Jie He Xue Bao , 2008,
Abstract: Objective: To investigate the effect of Salvia Miltiorrhiza injection (SMI) on peritoneal dialysis solution (PDS) induced injuries of peritoneal structure and function in a rat model, and to observe the relationship between the failure of peritoneal dialysis and expressions of aquaporin-1 (AQP-1) and zonula occluden-1 (ZO-1) in peritoneal tissues.Methods: Fifty-six SD rats were randomly divided into normal control group, 1.5% PDS group, 4.25% PDS group, 1.5%PDS+1% SMI group, 1.5%PDS+2% SMI group, 4.25% PDS+1% SMI group and 4.25% PDS+2% SMI group. Two-hour peritoneal dialysis test was performed in rats in different groups by intraperitoneal injection for 8-week. Then rats were killed on the 8th week, and the bloods and peritoneal tissues were gathered. The rate of ultrafiltration, clearance rates of urea nitrogen, creatinine and glucose of peritoneum and content of total protein in PDS were detected. Peritoneal membrane histology was evaluated by light microscopy and transmission electron microscopy. Expressions of ZO-1 and AQP-1 proteins in peritoneal tissues were detected by immunohistochemical method, and AQP-1 protein expression was also detected by Western blotting technique.Results: Compared with normal control group, using of 1.5% PDS and 4.25% PDS caused the changes of structure and function in peritoneum, such as pathological change of peritoneum, decreasing of the rate of ultrafiltration (P<0.05), clearance rates of creatinine and glucose (P<0.01) and the expression of ZO-1 protein (P<0.05), and increasing of the expression of AQP-1 protein (P<0.05). Compared with the simple PDS groups, the pathological damage of peritoneum was lessened and the rate of ultrafiltration and clearance rates of creatinine and glucose were increased in the 1.5% PDS+2% SMI group and 1.5% PDS+2% SMI group. Expression of AQP-1 protein was decreased by 1.5% PDS+2% SMI as compared with 1.5% PDS (P<0.05).Conclusion: SMI can relieve the injuries of function and structure of peritoneum by down-regulating the expression of AQP-1 protein.
Study on the Internal Audit for Listed Companies Based on Value-added View
Dan Wang,Yajun Guo
International Journal of Business and Management , 2009, DOI: 10.5539/ijbm.v4n7p52
Abstract: As the function of internal audit is being cognizing deeply and changing, the function of internal audit in Chinese listed company governance is gradually being strengthened. Combining with the new definition of internal audit, the enterprise risk management frame and the re-oriented value-added aim of internal audit, the measures such as perfecting the corporate governance structure and implementing many measures about management audit oriented by internal control and risk management were proposed to promote the listed companies to reform the management, evaluate the risk and added values, and fully exert the value-added function.
Problems and Countermeasures in the Development of the Processing Trade between China and Japan
Guangyu Zhang,Dan Wang
International Journal of Business and Management , 2010, DOI: 10.5539/ijbm.v5n8p170
Abstract: Processing trade if the result of international division of labor. With the further development of opening up to the outside world and the economic globalization, the development of processing trade between China and Japan will certainly be promoted. However, in some domains, the development actuality of processing trade between China and Japan is not optimistic, and many problems still exist in concrete management, and relative policies have not be perfected. Based on that, after reviewing the deficiencies in the policy management of the processing trade between China and Japan, this article will try to find out the problems existing in the development of the processing trade between China and Japan, and propose some policies and advices strengthening the management.
On the Subject of China's Agricultural Science and Technology Optimization
Dan Wang,Hong Li
Asian Social Science , 2010, DOI: 10.5539/ass.v6n2p117
Abstract: With the change of the pattern of agricultural science and technology extension system gradually, the construction of the main body of China's agricultural science and technology extension services is more and more important. The paper analyzes the problems of the main body of China's agricultural science and technology extension services, and gives us the proposals: cultivating diverse main bodies, playing the synergistic effect of the main body, and improving the capacity and vitality of the agricultural science and technology.
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