Science Discovery

Volume 7, Issue 4, August 2019

  • First Principles Study on the Two-dimensional Germanium Arsenide Containing Vacancy

    Yi Wei, Liang Fang, Xianyu Tong, Rulin Liu

    Issue: Volume 7, Issue 4, August 2019
    Pages: 188-193
    Received: May 29, 2019
    Accepted:
    Published: Jul. 19, 2019
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    Abstract: Two-dimensional layered materials exhibit exotic optical, electrical and thermoelectric properties, which have drawn worldwide attention in the past decade. As a novel kind of two-dimensional semiconductor, monolayer Germanium Arsenide (GeAs) can be exfoliated from bulk solid and it owns excellent dynamical and thermal stability and tunable bandgap... Show More
  • Research on the Development and Problems of Guandong Province Carbon Emmission Market Construction

    Chen Jian, Liu Chenglin, Lin Jingchuan

    Issue: Volume 7, Issue 4, August 2019
    Pages: 194-199
    Received: Apr. 18, 2019
    Accepted:
    Published: Jul. 19, 2019
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    Abstract: The climate anomalies around the world are still outstanding. Under the UN's United Nations Framework Convention on Climate Change (the Framework Convention) and the Kyoto Treaty, governments have adopted a country-specific reduction in CO2 initiatives such as greenhouse gas emissions etc.. After experiencing the pilot implementation of the carbon ... Show More
  • Physicochemical Characteristics of Natural Fruit and Vegetable Fermentation Broth and Monitoring of Its Fermentation Process

    Miao Li, Hao Song

    Issue: Volume 7, Issue 4, August 2019
    Pages: 200-204
    Received: Jul. 04, 2019
    Accepted:
    Published: Jul. 29, 2019
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    Abstract: The natural fermentation broth of fruits and vegetables is the fermentation broth obtained from the natural fermentation process of fruits and vegetables. The raw fermentation broth is produced by anaerobic fermentation of fruits and vegetables, so as to form a fermentation beverage with complex components, which can promote digestion and absorptio... Show More
  • Analysis of the Winning Rate of Asymmetric Antagonistic Games

    Li Yan-Bin, Zhang Hu-Ling

    Issue: Volume 7, Issue 4, August 2019
    Pages: 205-208
    Received: Jul. 13, 2019
    Accepted:
    Published: Jul. 29, 2019
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    Abstract: Game theory is a mathematical theory and method for studying phenomena with the nature of struggle, it is one of the most influential theories in modern social sciences. The idea of game theory is very well embodied in some asymmetric confrontation games. Players decision also count a lot in winning the game, but designers should balance the game b... Show More
  • Empirical Study on Economic Innovation and Development of Qinghai Biological Park

    Liu Yafei, Gan Shifen, Ding Shengxi

    Issue: Volume 7, Issue 4, August 2019
    Pages: 209-213
    Received: Jul. 06, 2019
    Accepted:
    Published: Jul. 29, 2019
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    Abstract: The park is a specific area for the agglomeration and development of related enterprises, a booster for speeding up the transformation of China's economic development mode, and an important support for achieving sustainable development. Based on the theory of Park Economic development, this paper investigates the overall economic development status... Show More
  • Analysis on Variation Features of Concentration of Main Air Pollutants in Tangshan

    Shi Youyu, Zhou Quan, Cao Xiaoxia, Guo Zihan, Li Heng

    Issue: Volume 7, Issue 4, August 2019
    Pages: 214-219
    Received: Jul. 02, 2019
    Accepted:
    Published: Aug. 27, 2019
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    Abstract: The quality of air is closely related to the comprehensive competitiveness of a city. Analyzing and discussing the changing rules of various air pollutants and finding out the leading factors affecting the current environmental quality are of great significance for further improving the urban environment and formulating reasonable and economic envi... Show More
  • Study on China's Traffic Development from the Perspective of Sustainable Urban Mobility Planning (SUMP)

    Ziang Xie

    Issue: Volume 7, Issue 4, August 2019
    Pages: 220-226
    Received: Jul. 17, 2019
    Accepted:
    Published: Aug. 27, 2019
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    Abstract: China's urbanization is in the context of high space-time compression. We need to meet many problems and new contradictions and challenges in the past two or three hundred years in the West in a short time. It is of great significance to learn from the advanced experience of developed countries such as the European Union for guiding China's rapid u... Show More
  • Study on Rapid Detection of N-Nitrosodimethylamine in Duck and Poultry Meat

    Jie Li, Jianhuan Li, Wei Xiang, Hui Xu, Bolong Lv, Qing Wu

    Issue: Volume 7, Issue 4, August 2019
    Pages: 227-231
    Received: Jun. 25, 2019
    Accepted:
    Published: Aug. 27, 2019
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    Abstract: Aquatic animals are susceptible to N-dimethylnitrosamine pollution in water quality or feed, which is a non-negligible problem in food safety detection. Gas chromatography/triple four-stage mass spectrometry combined with QuEChERS was used to detect N-dimethylnitrosamine in duck and poultry meat, and acetonitrile, salting-out agent and purifying ag... Show More
  • Effect of Sand Blasting on Single Crystal Superalloy M4761

    Lin Xiaohu, Guo Weihua, Zhang Qiongyuan, Wei Xianping, Gong Xiufang, Yang Gongxian, Xi Shengqi

    Issue: Volume 7, Issue 4, August 2019
    Pages: 232-238
    Received: Jul. 08, 2019
    Accepted:
    Published: Aug. 27, 2019
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    Abstract: In this paper, the recrystallization evolution of single crystal superalloy M4761 at different solid solution temperatures after different sandblasting stress and different blasting time is studied. The results show that the sample is treated by solution treatment after blasting. When the solution temperature reaches the γ' phase dissolution temper... Show More
  • Research on Reflection and Rotation Features of Binomial Coefficient Distributions

    Zhu Minghan, Zheng Jeffrey Zhijie

    Issue: Volume 7, Issue 4, August 2019
    Pages: 239-248
    Received: Jul. 08, 2019
    Accepted:
    Published: Aug. 27, 2019
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    Abstract: With the rapid development of frontier neural network, artificial intelligence and big data technology, the related theory and application research of combinatorial mathematics are more and more extensive. The application of binomial coefficient in combinatorial mathematics is an effective way to solve the research of information coding and quantum... Show More
  • Design and Implementation of a Heterogeneous Safety Critical Computer

    Shi He, Zhao Deliang

    Issue: Volume 7, Issue 4, August 2019
    Pages: 249-256
    Received: Jun. 21, 2019
    Accepted:
    Published: Aug. 27, 2019
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    Abstract: In recent years, the rapid development of high-speed railway in our country, followed by a rail safety problem has become the most important issue, as the core of the train operation control equipment, the development of the safety critical computer should be considered, firstly. At present, the mainstream safety critical computers all adopt the me... Show More