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  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 374 journals)
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International Annals of Science
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Online) 2456-7132
Published by AIJR Publisher Homepage  [4 journals]
  • The Effects of Moisture Content on the Temperature of Some Selected Soil
           Samples in the Presence of Internal Heat

    • Authors: Amos Wale Ogunsola, Olalekan Ayodeji Olaleye, Gbenga Adelekan Olalude
      Pages: 1 - 15
      Abstract: The effect of moisture content on the temperature of some selected soil samples in the presence of internal heat was studied. The governing equation was modeled using Bosenneque’s approximation base on some necessary assumptions by which the transfer occurred. These equations were non-dimensionalized by employing some standard dimensionless parameters and later reduced to ordinary differential equations using perturbation method. This was then solved analytically. The various effects of the physical parameters that materialized were examined on the unsaturated and saturated forms of some selected soil samples. With the aid of Matlab software, the numerical results were graphed for visual examination. It was observed that the presence of moisture content in these soils helped in boosting their temperatures as the solar radiation and internal heat increase.
      PubDate: 2022-07-17
      DOI: 10.21467/ias.12.1.1-15
      Issue No: Vol. 12, No. 1 (2022)
  • Effect of Nitrogen and Phosphorus Levels on Yield of Marvel Grass
           (Dichanthium-Annulatum L) in Irrigated Condition Under N-W Agro Climatic

    • Authors: D. G. Patel, C. K. Patel, Rabari Kiranbhai
      Pages: 16 - 21
      Abstract: The experiment was undertaken during Kharif season of 2019, 2020 and 2021 at Regional Research Station, S. D. Agricultural University, Kothara (Gujarat). The treatments comprised of three levels of nitrogen (N1: 10 kg N/ha, N2: 20 kg N/ha and N3: 30 kg N/ha) and three levels of phosphorus (P1: 0, P2: 20, P3: 40 kg P2O5/ha) was laid out in a factorial randomized block design with three replications. Effect of different nitrogen levels on Marvel green forage yield was found significant in pooled analysis. Application of 30 kg nitrogen/ha (N3) recorded significantly the highest plant height (135.68 cm), effective tillers/tussock (47.44), green and dry forage yield @ 811.18 and 347.87 q/ha, Crude fibre content (38.36 %) and Crude protein content (5.21 %), while application of phosphorus has no impact significantly on yield of marvel grass in pooled as well as individual year of analysis.
      PubDate: 2022-10-11
      DOI: 10.21467/ias.12.1.16-21
      Issue No: Vol. 12, No. 1 (2022)
  • Composition of Mangroves and Mangrove Associates in Barangay Ata Atahon,
           Nasipit, Agusan del Norte, Philippines

    • Authors: Cresencio C. Cabuga Jr., Aldrin B. Lopez, Neprissa E. Cuarteron, Nñeka Jean A. Pangapalan
      Pages: 22 - 30
      Abstract: Mangroves are essential components of the coastal biome and have an extremely productive ecosystem. It provides benefits for both the environment and humans. Valuation of the diversity and species composition plays a crucial role in the conservation and protection. This study aimed to assess the composition of mangroves and mangrove associates in Barangay Ata-Atahon, Nasipit, Agusan del Norte, Philippines. Three sampling stations were established with a 50-meter interval in every station. Transect lines of 50 meters were laid perpendicular to the shoreline. The results show that 19 species of mangroves and 5 mangrove associates were recorded. Ceriops decandra was found to be the dominant species with 303 individuals and constituting 36% of the entire mangroves population. While Camptostemon philippinensis, Rhizophora apiculata, Rhizophora mucronata had the lowest number of individuals and made up a combination of 5%. In mangrove associates, Avicennia rumphiana made up 47% of the population and was followed by Avicennia marina (40%). This implied that the study area is less diverse based on the observed species when compared to the 46-mangrove species found in the Philippines alone. Necessarily, reforestation and conservation efforts must be attained to fill the gaps between the community and mangrove sustainability. Thus, determining the species diversity and composition measures ecological status. Mitigations and ecological management must be enacted by the locality to further conserve the mangrove ecosystem.
      PubDate: 2022-11-19
      DOI: 10.21467/ias.12.1.22-30
      Issue No: Vol. 12, No. 1 (2022)
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