Science Discovery

Volume 7, Issue 2, April 2019

  • Smartphone-Based Ammonium Ion Biosensor for Sweat Analysis

    Ying Ni, Hong Liu

    Issue: Volume 7, Issue 2, April 2019
    Pages: 61-64
    Received: Apr. 18, 2019
    Accepted:
    Published: May 23, 2019
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    Abstract: In this article, we present a smartphone-based biosensor for detection of the ammonium ion in sweat. The sensing system consists of a sample collection chip, an ammonium ion selective electrode by screen printing, a potential reading chip and a smartphone. When the sweat flows through the sensitive membrane, a membrane potential is generated which ... Show More
  • Using NGS Technology for Transcriptome Comparison of Normal and Tumor Tissues in Colorectal Cancer Patients

    Chen Chumo

    Issue: Volume 7, Issue 2, April 2019
    Pages: 65-71
    Received: Apr. 22, 2019
    Accepted:
    Published: May 23, 2019
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    Abstract: Colorectal cancer is a kind of malignant tumor, which results from life habits and genetic factors. This research project is called "Using NGS Technology for Transcriptome Comparison of Normal and Tumor Tissues in Colorectal Cancer Patients", which belongs to basic research. Next-generation sequencing technology (NGS), also known as high-throughput... Show More
  • An Investigation of Acute Gastroenteritis Outbreak Caused by Norovirus GII Infection in a University

    Yapin Li, Huisuo Yang, Haiyang Zhang, Min Wang, Qingfeng Li, Jian Wang, Wenjing Song, Dongqi Gao

    Issue: Volume 7, Issue 2, April 2019
    Pages: 72-77
    Received: Jan. 19, 2019
    Accepted:
    Published: May 23, 2019
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    Abstract: Objective: To investigate an acute gastroenteritis epidemic in a university and to identify the scale, to find the possible causes of the outbreak. Methods: The field epidemiological survey method was used for information collection. Case-control and retrospective cohort study methods were used. The database was established with SPSS 25.0 and stati... Show More
  • Experimental Study on Autism Caused by Prenatal Exposure to Plasticizer DEHP

    Boyang Hu, Yiting Song, Genan Liang, Yihuan Shao, Linling Qi, Xue Jiang, Yuemin Ding

    Issue: Volume 7, Issue 2, April 2019
    Pages: 78-81
    Received: Mar. 05, 2019
    Accepted:
    Published: May 23, 2019
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    Abstract: Objective: Epidemiological studies have found that exposure to plasticizers in the environment may be associated with autism in preschool children, but laboratory evidence is lacking. To determine whether prenatal exposure to DEHP, a plasticizer, causes autism in offspring mice. Methods: Pregnant mice were randomly divided into four groups: corn oi... Show More
  • The Effect and Evaluation of Video Intervention and Education on Stress and the Effect of Operation of Patients Undergoing Oral Maxillofacial Operation

    Tao Ran, Zhang Yifang, Huang Minfeng, Li Jianan

    Issue: Volume 7, Issue 2, April 2019
    Pages: 82-86
    Received: Apr. 11, 2019
    Accepted:
    Published: May 23, 2019
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    Abstract: Objective: To evaluate the effect of video intervention and education on anxiety and pressure of patients undergoing oral maxillofacial operation. Method: a total of 96 patients were randomly divided into the experimental and control group, with 48 patients in each group. The control group were given routine intervention and education while the exp... Show More
  • Meet the Needs of Reservoir Identification Research of Atypical Archie Phenomenon

    Wenqiang Tang, Kun Xiong, Chen Pan, Haoting Xing, Wei Chen, Xuan Liu, Xinxin Zang, Yun Yang

    Issue: Volume 7, Issue 2, April 2019
    Pages: 87-91
    Received: Apr. 02, 2019
    Accepted:
    Published: May 23, 2019
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    Abstract: According to the core data, the characteristics of resistivity variation under different porous structure and wettability are studied and explained theoretically. It is concluded that with the increase of porous structure exponent m, the resistivity increases significantly with the same saturation, and the influence is beyond imagination. With the ... Show More
  • Experimental Study on Rock Fragmentation Efficiency of Two Stage PDC Bit

    Wang Bin, Guan Zhichuan, Hu Huaigang, Pan Rui

    Issue: Volume 7, Issue 2, April 2019
    Pages: 92-97
    Received: Apr. 08, 2019
    Accepted:
    Published: May 23, 2019
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    Abstract: This paper proposes a two-stage PDC bit that can actively release the formation pressure in advance to improve the rock breaking efficiency, and provides a new solution for effectively improving the rock breaking efficiency of the deep hard formation. The red sandstone drilling comparison experiment under the same drilling parameters of the two-sta... Show More
  • Features of Atmospheric Pollutant in Beijing Region from 2014 to 2017

    Tang Xiru, Xu Liping, Liu Shufu, Shen Chunming, Wang Bin, Long Tao

    Issue: Volume 7, Issue 2, April 2019
    Pages: 98-106
    Received: Apr. 10, 2019
    Accepted:
    Published: May 23, 2019
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    Abstract: In order to find effective ways to control atmospheric environment, this paper mainly studies the Spatial-temporal features of atmospheric pollutant distribution in the past 2014-2017 years. The particulate matter concentration was retrieved by remote sensing data and all data would be processed by Kriging method. The results show that most polluta... Show More
  • Full-Field Strain Analysis of Porous Membrane Under Biaxial Tension

    Wang Wei, Xu Xiaochen, Xu Zhihong

    Issue: Volume 7, Issue 2, April 2019
    Pages: 107-114
    Received: Mar. 25, 2019
    Accepted:
    Published: May 23, 2019
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    Abstract: In this paper, the full-field strain and strain concentration factor around the hole of PTFE membrane under uniaxial biaxial tension are studied based on digital image speckle (DIC) technique and finite element calculation.Through the load-strain curve of porous membrane during tension, three stages of properties of membrane during biaxial tension ... Show More
  • Pilot Study on Reverse Osmosis Concentrate of PTA Wastewater by O3-BAC

    Gao Chao

    Issue: Volume 7, Issue 2, April 2019
    Pages: 115-118
    Received: Apr. 04, 2019
    Accepted:
    Published: May 23, 2019
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    Abstract: This paper studies the effectiveness of the "O3-BAC" composite process in the treatment of the reverse osmosis concentrate of the PTA wastewater, and provides an important basis for the industrialization practice of the treatment of the reverse osmosis concentrate of the PTA wastewater.A pilot test was conducted in a petrochemical PTA sewage treatm... Show More
  • Research Progress of Oil Refining Wastewater Treatment Technology at Home and Abroad

    Gao Chao

    Issue: Volume 7, Issue 2, April 2019
    Pages: 119-125
    Received: Apr. 08, 2019
    Accepted:
    Published: May 23, 2019
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    Abstract: Refining wastewater is difficult to treat because of its high pollutants concentration, complex composition, poor biodegradability,and often contains toxic and harmful substances. This paper introduces the sources and characteristics of refinery wastewater and the main treatment status of refinery wastewater, which is the tertiary treatment method ... Show More
  • Implementation of Data Conversion Interface Between Midas and DUT2014 Structural Model

    Xu Ji, Zhinan Ren, Zhe Qi, Zheng He

    Issue: Volume 7, Issue 2, April 2019
    Pages: 126-133
    Received: Apr. 28, 2019
    Accepted:
    Published: May 23, 2019
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    Abstract: DUT2014 is a computational program developed by our team for the elastic-plastic time history analysis of super high-rise building structures. The integrated platform code is open source, which has all the materials and elements for the structural analysis of super high-rise buildings. Moreover, the integrated platform has a new element state trans... Show More