American Journal of Physics and Applications

Volume 6, Issue 6, November 2018

  • Angular Correlations of Particle Momentum in the Hot Dense Medium

    Zirui Wang, Yuhuan Li

    Issue: Volume 6, Issue 6, November 2018
    Pages: 142-146
    Received: Sep. 23, 2018
    Accepted: Oct. 19, 2018
    Published: Dec. 21, 2018
    DOI: 10.11648/j.ajpa.20180606.11
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    Abstract: The early universe consists of element particles such as quarks and gluons after the big bang. Understanding their interactions is crucial for the physics, especially their interaction strength: do they behave like a gas or like water? A lot of experiments and theoretical calculations have been performed in labs, using different particles to study ... Show More
  • The First Law of Thermodynamics in Vector Form and Convective Heat Transfer

    Davidzon Mikhail Yosifovich

    Issue: Volume 6, Issue 6, November 2018
    Pages: 147-153
    Received: Nov. 13, 2018
    Accepted: Dec. 04, 2018
    Published: Dec. 25, 2018
    DOI: 10.11648/j.ajpa.20180606.12
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    Abstract: Nowadays most of the practical calculations and theoretical findings in convective heat transfer amount to determining heat transfer coefficient (a coefficient of proportionality between surface density of the heat flux and temperature difference between the wall and the heated medium). An expression that includes heat transfer coefficient is calle... Show More
  • Improving Corrosion Resistance of Co Using Silane Coupling Treatment in Neutral Solution

    Katsumi Mabuchi

    Issue: Volume 6, Issue 6, November 2018
    Pages: 154-161
    Received: Oct. 30, 2018
    Accepted: Nov. 21, 2018
    Published: Jan. 15, 2019
    DOI: 10.11648/j.ajpa.20180606.13
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    Abstract: Many products using a magnetic property, a mechanical property and chemical property of the thin metal film of the nm order are developing in the great many fields. The establishment of technology for corrosion prevention under nm level or the atom level is necessary to control corrosion without losing the characteristic of these products. In this ... Show More
  • Study on Application of Waste Heat Recovery in Ammonia Refrigerator

    Tong Xie

    Issue: Volume 6, Issue 6, November 2018
    Pages: 162-168
    Received: Nov. 05, 2018
    Accepted: Dec. 08, 2018
    Published: Jan. 15, 2019
    DOI: 10.11648/j.ajpa.20180606.14
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    Abstract: Large ammonia chillers are widely used in the food production industry. Ammonia refrigerators generate a large amount of exhaust heat energy while cooling work. Traditionally, these exhaust heat energy is used as waste heat and discharged to the atmosphere through a condenser cooling fan. In this paper, the exhaust heat energy of ammonia refrigerat... Show More
  • Intermolecular Hydrogen Bond in Acetic Acid Solutions. Raman Spectra and ab initio Calculations

    Khakim Khushvaktov, Abduvakhid Jumabaev, Valeriy Pogorelov, Ulugbek Tashkenbaev, Akhmad Absanov, Gayrat Sharifov, Barno Amrullaeva

    Issue: Volume 6, Issue 6, November 2018
    Pages: 169-174
    Received: Dec. 07, 2018
    Accepted: Dec. 20, 2018
    Published: Jan. 15, 2019
    DOI: 10.11648/j.ajpa.20180606.15
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    Abstract: C=O vibrational bands of various aggregated formations of pure acetic acid in the Raman spectra have different values of the depolarization ratio. Ab initio calculations using the Gaussian 98 W program in the Hartree-Fock approximation with the basic set of Gaussian functions RHF 6-31G++(d, p) show that this is how it should be. Thus, the formation... Show More