Science Discovery

Volume 9, Issue 6, December 2021

  • Numerical Simulation of Dam-Break Flood Routing and Sediment Erosion and Deposition Under Different Rainfall Conditions

    Shi Zhen Ming, Hou Zhuo Lin, Zhang Qing Zhao, Zhu Chun An, Qin Hao

    Issue: Volume 9, Issue 6, December 2021
    Pages: 269-282
    Received: Oct. 14, 2021
    Accepted: Nov. 05, 2021
    Published: Nov. 12, 2021
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    Abstract: Landslide dam is a natural dam body formed by collapse, landslide and debris flow. The flood caused by dam break will cause significant risk to the downstream of the dam. Under the effect of rainfall environment, the erosion and deposition rate of flood and sediment in the downstream of the dam will be affected. This paper takes Tangjiashan dam as ... Show More
  • The Prognostic Value of Preoperative Neutrophil to Lymphocyte Ratio in the Penile Cancer: Meta Analysis

    Yang Zeng, Zheng Shuchan, Xie Qun

    Issue: Volume 9, Issue 6, December 2021
    Pages: 283-289
    Received: Oct. 17, 2021
    Accepted: Nov. 08, 2021
    Published: Nov. 12, 2021
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    Abstract: Objection: To evaluate the preoperative neutrophil to lymphocyte ratio in the prognosis of penile cancer. Methods: From the establishment of the database to January 2021, search for the Cochrane Library, PubMed, EMbase, CNKI, Wanfang database, papers that meet the inclusion and exclusion criteria will be obtained for meta analysis using RevMan 5.1 ... Show More
  • Quantitative Analysis of Spatial Distribution Characteristics of Traditional Villages in Hunan Province

    Yao Wang, Sun Yuan, Yin Xi

    Issue: Volume 9, Issue 6, December 2021
    Pages: 290-296
    Received: Oct. 10, 2021
    Accepted: Nov. 09, 2021
    Published: Nov. 12, 2021
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    Abstract: This study takes 658 traditional villages in Hunan province as the research object. Relying on ArcGIS geographic information system, the traditional villages in Hunan province were abstracted into point sets with attribute information. By means of average nearest neighbor distance analysis, kernel density analysis and intercity distribution compari... Show More
  • Study on Spatial Optimization of Urban Waterfront from the Perspective of Urban Renewal -- A Case Study of Dongguan Watertown Functional Area

    Mingli Li

    Issue: Volume 9, Issue 6, December 2021
    Pages: 297-302
    Received: Oct. 27, 2021
    Accepted: Nov. 08, 2021
    Published: Nov. 12, 2021
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    Abstract: As an important public open space in the city, the spatial optimization of the waterfront is related to the overall style of the key urban areas and the quality of life of residents. Urban renewal combined with the waterfront space can effectively improve the vitality of the city and promote the development of the city. Due to the existing urban de... Show More
  • Study on Energy-saving Design of Immigrant Residential Buildings in Midwestern Ningxia

    Li Xueping, Shen Yongcheng, Zhang Yin, Liu Jiao

    Issue: Volume 9, Issue 6, December 2021
    Pages: 303-307
    Received: Sep. 27, 2021
    Accepted: Nov. 04, 2021
    Published: Nov. 12, 2021
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    Abstract: Based on the investigation of the indoor thermal environment of rural immigrant residential buildings in Shapotou District, Zhongwei City, Ningxia Province, the indoor thermal environment is tested and analyzed. Combined with the local geographical conditions and economic development, the external envelope structure is optimized, and the energy-sav... Show More
  • Comparison of Damage Models of Reinforced Concrete Columns and Research on Improved Stiffness Model

    Liu Baichuan, Hu Weibing

    Issue: Volume 9, Issue 6, December 2021
    Pages: 308-313
    Received: Oct. 14, 2021
    Accepted: Nov. 08, 2021
    Published: Nov. 12, 2021
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    Abstract: Based on the test data of reinforced concrete (RC) columns published in Pacific Earthquake Engineering Research Center (PEER) database, three existing typical seismic damage models are studied, and the distribution law of damage index of the same member calculated by energy dissipation model, stiffness degradation model and Park-Ang model are summa... Show More
  • Mechanism of Transfer Story Beam-column in High-rise Buildings

    Chen Zhaorong, Cai Zhili, Bai Zhongkui, Zhao Zhen

    Issue: Volume 9, Issue 6, December 2021
    Pages: 314-320
    Received: Oct. 15, 2021
    Accepted: Nov. 05, 2021
    Published: Nov. 12, 2021
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    Abstract: The structural layout of the transfer floor is easy to cause the discontinuity of vertical components, Sudden change of floor lateral stiffness and floor shear capacity, they were unfavorable to the calculation of the overall index of the structure. In order to study the working mechanism of single span transfer beam on the first floor of high-rise... Show More
  • Research on Rural Real Scene Model Measurement Based on POS Aerial Triangulation Technology

    Da Bing, Shi Xingxi

    Issue: Volume 9, Issue 6, December 2021
    Pages: 321-328
    Received: Oct. 27, 2021
    Accepted: Nov. 05, 2021
    Published: Nov. 12, 2021
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    Abstract: Rural development has always been one of the key and difficult problems in China, such as rural natural disaster monitoring, rural land resources and homestead management, rural cultural and tourism development, comprehensive management of rural environment and so on. In this paper, POS aerial triangulation technology is combined with rural areas, ... Show More
  • The Boundary Regularity for Normalized Infinity Laplace Equations

    Yanhui Li, Xiaotao Huang

    Issue: Volume 9, Issue 6, December 2021
    Pages: 329-334
    Received: Oct. 11, 2021
    Accepted: Nov. 09, 2021
    Published: Nov. 12, 2021
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    Abstract: Infinity Laplace equations, which derive from minimal Lipschitz extensions and absolutely minimal variational problems, have been widely applied in zero-sum tug-of-war game, optimal transport, shape deformation and so on. However, due to the quasi-linearity, extreme degeneration (non-degeneration only in the gradient direction) and non-divergence o... Show More
  • Characteristics of Trace Elements in Molybdenite and Its Application in Mineral Deposits

    Sun Pengcheng, Li Chao, Zhou Limin, Qu Wenjun, Li Xinwei, Zhao Hong, Du Andao

    Issue: Volume 9, Issue 6, December 2021
    Pages: 335-339
    Received: Oct. 31, 2021
    Accepted: Nov. 13, 2021
    Published: Nov. 17, 2021
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    Abstract: Previous studies on molybdenite are mainly focused on Re-Os dating for a deposit, by contrast there have relatively little on trace elements in molybdenite. On the basis of statistical summarizing the previous research results, this paper discusses the variation of trace elements of molybdenite in various deposits and the combination of the differe... Show More
  • Meta-Analysis of the Effect of Exercise Intervention on Improving the Executive Function of College Students

    Yang Qun, He Jia Xin, Li Duan Ying, Ding Shi Cong, Xie He Zhi, Chan Zai, Sun Jian

    Issue: Volume 9, Issue 6, December 2021
    Pages: 340-347
    Received: Oct. 28, 2021
    Accepted: Nov. 13, 2021
    Published: Nov. 17, 2021
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    Abstract: Objective To systematically evaluate the effects of different exercise styles on executive function of college students through a meta-analysis of relevant literatures at home and abroad, and to provide evidence-based reference for future studies on mental health and teaching. Method to "aerobic exercise" and "movement" executive function, "cogniti... Show More
  • Study on Dynamic Characteristics of Loess Slope Reinforced by Prestressed Anchor Cables Under Earthquake

    Wang Xiaolin, Xue Ying

    Issue: Volume 9, Issue 6, December 2021
    Pages: 348-353
    Received: Sep. 28, 2021
    Accepted: Nov. 15, 2021
    Published: Nov. 17, 2021
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    Abstract: As a commonly used method to reinforce slopes, prestressed anchor cables can effectively prevent slope instability. To study the dynamic response characteristics of loess slopes reinforced with prestressed anchor cables under earthquake action. Taking a slope in Yan'an as an example, using MIDAS/GTS numerical simulation, a model of loess slope rein... Show More
  • Study on Indoor Thermal Environment of Traditional Dwellings in the Watery Town in Suzhou in Winter

    Li Xueping, Liu Jiao

    Issue: Volume 9, Issue 6, December 2021
    Pages: 354-359
    Received: Oct. 09, 2021
    Accepted: Nov. 15, 2021
    Published: Nov. 17, 2021
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    Abstract: Traditional dwellings have their own characteristics and values in the construction of indoor thermal environment. In order to analyze the current situation of thermal environment of dwellings in Southern Region of the Yangze River. This paper takes traditional dwellings in the watery town in Suzhou as the research object, and studies the indoor th... Show More
  • Seismic Isolation Technology Based on Green Building in Prefabricated Assembly Research Application in Structure

    Chen Zhaorong, Cai Zhili, Zeng Changluo, Bai Zhongkui, Du Shishuai

    Issue: Volume 9, Issue 6, December 2021
    Pages: 360-365
    Received: Oct. 30, 2021
    Accepted: Nov. 13, 2021
    Published: Nov. 17, 2021
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    Abstract: Green construction aims to provide a healthy, comfortable and efficient use of space for human beings to live in harmony with nature. The related concepts and policies of green construction are discussed, and several ways to realize green construction are introduced. Prefabricated assembly integral structure is one of the main ways of green constru... Show More
  • Oxygen Reduction Catalyst for Active Corrosion Protection of Epoxy Coating

    Meng Cheng, Junhao Liu, Shuangqing Sun, Songqing Hu

    Issue: Volume 9, Issue 6, December 2021
    Pages: 366-370
    Received: Oct. 26, 2021
    Accepted: Nov. 16, 2021
    Published: Nov. 17, 2021
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    Abstract: Metal corrosion has spread all over all aspects of national economy and life, causing serious economic losses and ecological hazards. Because of its excellent protective effect and universality, coating has become an important choice for metal corrosion protection. Although the conventional coating can realize metal corrosion protection with its sh... Show More
  • Uncertainty and Sensitivity Analysis of OIIP Estimation Based on Geological Model

    Zeng Xing, Song Heng, He Congge, Bo Bing, Zhao Liangdong, Liu Yunyang, Cai Rui

    Issue: Volume 9, Issue 6, December 2021
    Pages: 371-374
    Received: Nov. 03, 2021
    Accepted: Nov. 23, 2021
    Published: Nov. 24, 2021
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    Abstract: Due to the limitations of understanding of geological parameters of oil and gas reservoirs, there is an uncertainty in the results of OOIP calculation. Study the oilfield OOIP distribution probability distribution and the sensitivity of relevant key parameters are quite meaningful to make development plan. In this paper, in the process of volumetri... Show More
  • Modification Effect of TiO2 Hollow Nanoparticles on Insulating Properties of Transformer Oil

    Guangshuai Sun, Jiawei Liu, Binzhong Jia, Baixin Liu, Yuzhen Lv

    Issue: Volume 9, Issue 6, December 2021
    Pages: 375-378
    Received: Oct. 28, 2021
    Accepted: Nov. 23, 2021
    Published: Nov. 24, 2021
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    Abstract: With the promoting of transmission voltage level and the continuous fluctuation of operating conditions by connecting renewable energy into the power system, more stringent requirements have been placed on the operation reliability of transformers and other large electrical equipment. Transformer oil, as the main liquid insulating medium in large p... Show More
  • Reliability of Sensory Test for Japonica Type Rice Cultivars in China

    Cui Zhongqiu, Akihito Kusutani, Yuji Mastue

    Issue: Volume 9, Issue 6, December 2021
    Pages: 379-384
    Received: Oct. 28, 2021
    Accepted: Nov. 23, 2021
    Published: Nov. 24, 2021
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    Abstract: It is of great theoretical and practical significance to construct a scientific taste sensory evaluation method to obtain accurate and reliable data, so as to provide theoretical basis and technical support for the breeding and cultivation technology development of taste japonica rice varieties. In this study, sensory evaluation experiments were ca... Show More
  • Finite Element Analysis on Seismic Performance of Tubular Web Reduced Section Connection

    Wang Peiyi, Hu Shaowei, Qi Hao, Luo Lipeng, Zhao Xuan, Nie Ying, Tao Xiu

    Issue: Volume 9, Issue 6, December 2021
    Pages: 385-393
    Received: Oct. 29, 2021
    Accepted: Nov. 23, 2021
    Published: Nov. 24, 2021
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    Abstract: In order to avoid the brittle failure of the weld at the beam and column interface, a new type of prefabricated joint with tubular web reduced section connection (PTWRBS) between concrete-filled square steel tubular column and steel beam was proposed, so that move plastic hinge outward from the contact area of beam and column under earthquake actio... Show More
  • Dynamic Response of Membrane Structure Under Wind Load

    Li Mingyang, Xu Zhihong

    Issue: Volume 9, Issue 6, December 2021
    Pages: 394-400
    Received: Oct. 27, 2021
    Accepted: Nov. 24, 2021
    Published: Dec. 02, 2021
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    Abstract: In this paper, the dynamic response of ship-borne membrane radome under the impact of wind was investigated. Based on Computational Fluid Dynamics (Computational Fluid Dynamics), a fluid-structure coupling model was established, to simulate the membrane structure impacted by wind, The influence of the initial velocity of wind, the angle of incidenc... Show More
  • Research on Vehicle Scheduling Problem of Multi Warehouse Collaborative Distribution and Its Application

    Kewei Chen, Fangyan Dong, Xusheng Wang, Yuecong Zhu, Xiaomin Chu, Kaoru Hirota

    Issue: Volume 9, Issue 6, December 2021
    Pages: 401-409
    Received: Oct. 28, 2021
    Accepted: Nov. 24, 2021
    Published: Dec. 02, 2021
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    Abstract: In the modern society with highly developed logistics, while paying attention to structural and functional strategic layout and global scale services, it is also our ultimate goal to pursue efficient transportation / high-quality logistics services, reduce logistics transportation costs and reduce CO2 emissions. This paper proposes a new concept of... Show More
  • Cooperative Mechanism and Technology Parameters Optimization of Multi-thermal Fluid Huff & Puff Development in Heavy Oil Reservoir

    Bo Bing, Xu Anzhu, Zhao Lun, Shan Fachao, Liu Minhui, Yu Wei

    Issue: Volume 9, Issue 6, December 2021
    Pages: 410-416
    Received: Sep. 10, 2021
    Accepted: Nov. 30, 2021
    Published: Dec. 07, 2021
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    Abstract: The extra-heavy oil reservoirs in Central Asia have the characteristics of shallow burial, high crude oil viscosity, and strong reservoir heterogeneity. Conventional steam huff&puff have good initial development effects, but because energy cannot be replenished in time, steam huff&puff in the later stages huff&puff production declined fast and the ... Show More
  • Effects of Buyang Huanwu Decoction on Endoplasmic Reticulum Stress-Autophagy Response and GADD34 Expression in Mice with CIRI

    Zhou Shengqiang, Li Bo, Liu Fang

    Issue: Volume 9, Issue 6, December 2021
    Pages: 417-423
    Received: Nov. 19, 2021
    Accepted: Dec. 06, 2021
    Published: Dec. 07, 2021
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    Abstract: Objective: To investigate the effects of Buyang Huanwu Decoction on endoplasmic reticulum stress-autophagic response and the expression of GADD34 in ischemic penumbra of mice with CIRI. Methods: The mice were randomly divided into sham operation group, model group and Buyang Huanwu Decoction low-, medium-, and high-dosage groups. The mice were trea... Show More
  • Estimation and Its Evolution of CO2 Emission Factors from Heat Power Consumption in China: 2000-2019

    Yang Wangzhou

    Issue: Volume 9, Issue 6, December 2021
    Pages: 424-427
    Received: Dec. 25, 2021
    Accepted:
    Published: Dec. 29, 2021
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    Abstract: CO2 emission of energy consumption includes direct and indirect emission, and CO2 emission of heat power consumption is indirect emission. However, most scholars do not include heat power consumption in CO2 emission calculation of energy consumption, which will result in a certain degree of deviation between calculation results and actual situation... Show More