Universidad Internacional del Ecuador
Universidad Internacional del Ecuador Quito: Repositorio Digital UIDENot a member yet
4856 research outputs found
Sort by
SEEKING ECOLOGICAL BALANCE IN THE SHADOW OF THE CLIMATE CRISIS: NEW WAVE ENVIRONMENTAL MOVEMENTS
No full text
Field-based experimental greenhouse gas emissions and energy use efficiency study of sorghum x sudan grass hybrid growth in a semi-arid region
No full textThe aim of this research was to define the energy use and greenhouse gas (GHG) emissions associated with the production of sorghum x sudan grass (SSG) hybrids. Energy use efficiency (EUE) indicators and GHG ratios were computed for the 2021 and 2022 growth seasons. Energy inputs, including diesel, fertilizers, seeds, and agricultural machinery, were assessed based on their energy equivalents, while energy outputs were calculated based on the energy value of the biomass produced. The analysis differentiated between direct energy inputs (human labor, diesel, irrigation, and electricity) and indirect energy inputs (machinery, fertilizer, and seed). Energy inputs were further divided into renewable energy sources (human labor, water, seeds) and non-renewable energy sources (fertilizer, fuel, and electricity). GHG ratios were determined by calculating the carbon footprint of the inputs in the production process. The average energy input and output for SSG hybrid production were computed to be 20445.65 MJ ha−1 and 370040.77 MJ ha−1, respectively. The research defined an EUE of 18.10, with a specific energy of 1.02 MJ kg−1, an energy productivity of 0.98 kg MJ−1 and a net energy value of 349595.12 MJ ha−1. Direct and indirect energy inputs were computed to be 12901.65 MJ ha−1 (63.10 %) and 7544 MJ ha−1 (36.90 %), while renewable and non-renewable inputs were calculated to be 4718.30 MJ ha−1 (23.08 %) and 15727.35 MJ ha−1 (76.92 %), respectively. The total GHG emissions were 1324.55 kgCO2-eq ha−1 and the GHG ratio was 0.07 kgCO2-eq ha−1. The production profitability ratio was calculated as 3.35. SSG hybrid production proved to be highly profitable for the 2021 and 2022 production seasons in terms of EUE
Evaluation of potential technologies for flock management and economic usability insheep farming.
No full text
Serebral Palsi olan yükseköğretimdeki bireylerin üniversite yaşamına yönelik deneyimleri
No full textMercury Removal Properties of Schiff Base Functionalized Benzoylthiourea Derivative and Its Copper Complex for Catalytic Application in Oxidative Polymerizations
No full textIn this study, Schiff base functionalized benzoylthiourea derivative ligand (SA2BT5) was synthesized and characterized. The chemical adsorption efficiency of the synthesized SA2BT5 ligand in the separation of Hg2+ ions in water was investigated by solid phase extraction technique. According to the obtained results, SA2BT5 ligand showed high separation efficiency against mercury ions. Hg2+ was recovered 100% from the solution with 30 mg L-1 concentration. Polynuclear metal complexes of SA2BT5 ligand with copper ions (Cu2+) were also synthesized and characterized. The catalytic activity of SA2BT5-Cu from the complexation between SA2BT5 ligand with Cu2+ ion was investigated on the oxidation of guaiacol through Fenton like reaction mechanism. Oxidation of guaiacol was completed within 90 min of reaction duration at room temperature. Catalytic activity of SA2BT5-Cu catalyst towards the polymerization of guaiacol was also investigated and SA2BT5-Cu demonstrated moderate activity. It indicates promising results for the use of Schiff base functionalized benzoylthiourea polynuclear ligands as catalysts for oxidation reactions and as resins for chemical adsorptions of heavy metal ions
