American Journal of Quantum Chemistry and Molecular Spectroscopy


Volume 5, Issue 1, June 2021

  • Molecular Complexes of Amino Acid (α-Alanine) and Their Manifestation in the Raman Spectra, Ab initio Calculations

    Hakim Hushvaktov, Abduvaxid Jumabaev, Gulam Muradov, Akhmad Absanov

    Issue: Volume 5, Issue 1, June 2021
    Pages: 1-9
    Received: 22 December 2020
    Accepted: 4 January 2021
    Published: 15 January 2021
    DOI: 10.11648/j.ajqcms.20210501.11
    Abstract: The purpose of this work is to determine the role of hydrogen bonds in the crystallization of alanine, which includes carbooxyl COOH and amino NH2 groups, and the manifestation of these intermolecular interactions in the Raman spectra. FT-Raman spectra were analyzed and ab initio calculations by the RHF and B3LYP methods were performed in order to ... Show More
  • Influence of Unlike Proportions of Preliminary and Activated Sludge on Methane Generation During Anaerobic Co-digestion

    Md. Nurul Islam Siddique, Mohd Zamri Bin Ibrahim, Mohd Mokhlesur Rahman

    Issue: Volume 5, Issue 1, June 2021
    Pages: 10-15
    Received: 20 April 2021
    Accepted: 7 May 2021
    Published: 27 May 2021
    DOI: 10.11648/j.ajqcms.20210501.12
    Abstract: The aim of this study was to look into methane generation using different amounts of initial sludge (IS) and activated sludge (AS) for anaerobic transformation. To compare the best combination in analysis with a benchmark combination, C0, three experimental ratios (IS: AS) (v/v) were used: C1 (60: 40), C2 (80: 20), and C3 (100: 00). (40: 60). Anaer... Show More