Modern Chemistry

Volume 9, Issue 4, December 2021

  • Study of the Effect of Various Fillers on the Properties of Epoxy Oligomers

    Shixaliyev Kerem Sefi

    Issue: Volume 9, Issue 4, December 2021
    Pages: 73-76
    Received: 9 September 2021
    Accepted: 26 September 2021
    Published: 23 November 2021
    Abstract: The shell of eggs, kaolin and fiberglass epoxy oligomers and fillers were taken as the object of research and compositions based on them were prepared, the physical and mechanical properties of the composition were studied using the most modern research methods. properties were determined by conducting several tests (tensile, bending, composite den... Show More
  • Effect of Different Source and Rates of Biochar Application on Selected Physic-Chemical Properties of Acidic Soil in Western Ethiopia

    Talila Garamu Urgessa

    Issue: Volume 9, Issue 4, December 2021
    Pages: 77-82
    Received: 29 October 2021
    Accepted: 17 November 2021
    Published: 24 November 2021
    Abstract: Soil acidity is the serious problem in the western Ethiopia. Therefore the aim of this experiment was to study the effect of different source and rates of biochar application on the selected physic chemical properties of acidic soil. The experiment involved factorial combinations of three sources biochar (maize, sesame and soybean) and five rates o... Show More
  • The Effect of N, P, K, and Si Fertilizers on pH, P-available, P-uptake and Black Rice Yield (Oryza sativa L. indica) on Dryland Inceptisols

    Anni Yuniarti, Marenda Ishak Sonjaya Sule, Dirga Sapta Sara, Hafizh Naufal Suryandani

    Issue: Volume 9, Issue 4, December 2021
    Pages: 83-87
    Received: 2 July 2021
    Accepted: 27 July 2021
    Published: 27 November 2021
    Abstract: Black rice is a type of rice variety found in Indonesia and is well-known as a functional food with a high anthocyanin content which beneficial for those who consume it. Dryland has the potential to support growth of black rice plants, because it has a wide distribution in Indonesia, but has problems with soil fertility such as soil pH and low avai... Show More
  • On the Formation Mechanism of Indigo Blue and Indigo Red from Vegetable Source

    Francisco Sánchez-Viesca, Reina Gómez

    Issue: Volume 9, Issue 4, December 2021
    Pages: 88-91
    Received: 10 November 2021
    Accepted: 27 November 2021
    Published: 7 December 2021
    Abstract: In this communication a series of ionic reactions is advanced in order to explain not only indigo blue formation but also the continuous presence of indigo red as companion, and why this compound is always found in minority. Indican is the glycoside found in Indigofera tinctoria from which the mixture of indigo blue and indigo red is obtained by me... Show More