American Journal of Applied Scientific Research

Volume 5, Issue 1, March 2019

  • Study on the Radial Vibration of a Thin Annular Vibrator with Multi-Radial Slots

    Liu Shiqing, Ma Leilei, Liu Yifeng, Li Dan, Chen Zhaojiang

    Issue: Volume 5, Issue 1, March 2019
    Pages: 1-5
    Received: 31 December 2018
    Accepted: 21 January 2019
    Published: 28 March 2019
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    Abstract: The radial vibration of a thin annular vibrator with multiple radial slots is studied. Based on the electro-mechanical analogy, the equivalent circuit and the frequency equation of the slotting thin annular vibrator in radial vibration are derived. By numerical simulations, the influences of the radius ratio of the thin annular vibrator on its disp... Show More
  • Innovation Method of Distributed Storage for Huge Data of Geological and Mineral Resources Based on Hadoop

    Li Chaokui, Zhao Yanan, Xiao Keyan, Chen Jianhui

    Issue: Volume 5, Issue 1, March 2019
    Pages: 6-16
    Received: 24 January 2019
    Accepted: 4 March 2019
    Published: 28 March 2019
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    Abstract: With the emergence of big data of TB and PB geological and mineral resources, the storage of large geological data has become a worldwide problem puzzling geologists. The traditional storage and service model of geological data is facing a great challenge. For example, when the scale of data increases dramatically, general relational database can n... Show More
  • Effect of Temperature on the Synthesis of Methyl Ester via the Transesterification of Waste Black Seed Oil and Castor Seed Oil Admixture

    Bello Yunusa Makama, Wahidullah Azizi, Suraya Azizi, Musbahu Rabiu

    Issue: Volume 5, Issue 1, March 2019
    Pages: 17-20
    Received: 29 October 2018
    Accepted: 11 December 2018
    Published: 13 April 2019
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    Abstract: There is an increasing attempt in biodiesel production (fatty acid methyl ester) because of the depleting fossil fuel resources as well as the similarity in properties when compared to those of diesel fuels. Engines set off on biodiesel have lower emissions of carbon monoxide, unburned hydrocarbons, and air toxics than engines runned on petroleum-b... Show More
  • Application of Stimstream Shaped Charge with Consistent Entrance Hole and Deep Penetration in Shale Gas Reservoir

    Wang Changshuan, Guo Hongzhi, Jiao Guandong, Niu Yuanyuan, Xie Mingzhao

    Issue: Volume 5, Issue 1, March 2019
    Pages: 21-27
    Received: 1 February 2019
    Accepted: 1 April 2019
    Published: 22 April 2019
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    Abstract: To address the issues of inefficient hydraulic fracturing on perforation clusters in shale gas horizontal wells caused by the inconsistent size of entrance holes on the casing, Stimstream shaped charge providing consistent hole and deep-penetration was introduced and its special performance was analyzed. Surface concrete target test and field test ... Show More
  • A Manual Kinetic Assay in a Fixed Yeast Model for Drug Discovery

    Vahe Nahapetyan, Shiela Delos Santos, Kristel Joy Crocker, Dayana Tobar, Dante Nazarian, Hovannes Chirishyan, Gerard Beltran, Rachel Dubin, Leticia Reque, Prabkiran Singh, Brandie Cardona, Graciel Royce Bachinela, Lillyt Sarkisyan, Gregory Zem, Steven Oppenheimer

    Issue: Volume 5, Issue 1, March 2019
    Pages: 28-34
    Received: 12 May 2019
    Accepted: 10 June 2019
    Published: 24 June 2019
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    Abstract: Manual cell counting assays are often considered as a gold standard in some applications because of direct observation of results. Here a manual kinetic cell counting method is used to evaluate the efficacy of reagents to unclump cells in a fixed yeast (Saccharomyces cerevisae) model. Clumped cells are more dangerous than single cells in many human... Show More