Search Results - "Nestor Ulloa"

Comprehensive study on zeolitepolyester composite coated sheet for eco-friendly solar panels for enhanced panel performance and reduced panel temperature by Sathyanarayanan, Aishwarya, Murugesan, Balasubramanian, Rajamanickam, Narayanamoorthi, Ordoñez, Christian, Onyelowe, Kennedy C., Ulloa, Nestor

“…Solar energy is the most promising source for generating residential, commercial, and industrial electricity. However, solar panels should be eco-friendly to…”
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Modelling the mechanical properties of concrete produced with polycarbonate waste ash by machine learning by Sathvik, S., Kumar, Rakesh, Ulloa, Nestor, Shakor, Pshtiwan, Ujwal, M. S., Onyelowe, Kennedy, Kumar, G. Shiva, Christo, Mary Subaja

“…India’s cement industry is the second largest in the world, generating 6.9% of the global cement output. Polycarbonate waste ash is a major problem in India…”
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The role of non-metallic Al2O3 inclusions, heat treatments and microstructure on the corrosion resistance of an API 5L X42 steel by Villavicencio, Julio, Ulloa, Nestor, Lozada, Luis, Moreno, Monica, Castro, Lidia

“…The role of heat treatments, non-metallic aluminium oxide inclusions, and microstructure on the corrosion resistance of an API 5L X42 steel was examined in a…”
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Modeling the influence of bacteria concentration on the mechanical properties of self-healing concrete (SHC) for sustainable bio-concrete structures by Onyelowe, Kennedy C., Adam, Ali F. H., Ulloa, Nestor, Garcia, Cesar, Andrade Valle, Alexis Ivan, Zúñiga Rodríguez, María Gabriela, Zarate Villacres, Andrea Natali, Shakeri, Jamshid, Anyaogu, Lewechi, Alimoradijazi, Mohammadreza, Ganasen, Nakkeeran

“…In this research paper, the intelligent learning abilities of the gray wolf optimization (GWO), multi-verse optimization (MVO), moth fly optimization, particle…”
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Simulation of natural convection of nanofluid inside a square cavity using experimental data by lattice Boltzmann method by LiJie Weng, Amin Rahmani, S. Mohammad Sajadi, Anjan Kumar, Nestor Ulloa, Sajjad Firas Abdulameer, Ahmed Alawadi, Ali Alsalamy, Soheil Salahshour, Majid Zarringhalam, Sh. Baghaei

“…The Lattice Boltzmann Method (LBM) is one of the suggested numerical approaches that has been shown to accurately estimate the increase in heat transfer caused…”
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Multiple AI predictive models for compressive strength of recycled aggregate concrete by Ebid, Ahmed M., Ulloa, Nestor, Onyelowe, Kennedy C., Zuñiga Rodriguez, Maria Gabriela, Andrade Valle, Alexis Iván, Zárate Villacres, Andrea Natali

“…To address the growing concerns about the environmental impact and construction costs, there has been an increasing interest in the use of recycled aggregates…”
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Preparation, characterization, and evaluation of compressive strength of polypropylene fiber reinforced geopolymer mortars by Baykara, Haci, Cornejo, Mauricio H., Espinoza, Andrés, García, Enriqueta, Ulloa, Nestor

“…The study of the fiber-matrix interface represents a crucial topic to determine the mechanical performance of geopolymer-based materials reinforced with…”
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Predicting the impact of adding metakaolin on the splitting strength of concrete using ensemble ML classification and symbolic regression techniques –a comparative study by Garcia, Cesar, Andrade Valle, Alexis Ivan, Silva Conde, Angel Alberto, Ulloa, Nestor, Bahrami, Alireza, Onyelowe, Kennedy C., Ebid, Ahmed M., Hanandeh, Shadi

“…The mechanical characteristics of concrete are crucial factors in structural design standards especially in concrete technology. Employing reliable prediction…”
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An investigation of the effect of migratory type corrosion inhibitor on mechanical properties of zeolite-based novel geopolymers by Auqui, Nestor Ulloa, Baykara, Haci, Rigail, Andres, Cornejo, Mauricio H., Villalba, Jose Luis

“…The effects of migratory type corrosion inhibitor and curing time on the thermal stability and mechanical properties of Ecuadorian natural zeolite-based…”
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Preparation, characterization, and determination of mechanical and thermal stability of natural zeolite-based foamed geopolymers by Lynch, José Luis Villalba, Baykara, Haci, Cornejo, Mauricio, Soriano, Guillermo, Ulloa, Néstor A.

“…[Display omitted] •Foamed geopolymers were prepared for the first time by the alkaline activation of Ecuadorian natural zeolite.•Different amounts of Al powder…”
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Application-oriented mix design optimization and characterization of zeolite-based geopolymer mortars by Ulloa, Néstor A., Baykara, Haci, Cornejo, Mauricio H., Rigail, Andrés, Paredes, Cecilia, Villalba, José Luis

“…[Display omitted] •Zeolite-based geopolymer mortars were prepared for the first time.•The best mixture and curing temperature, corresponding to:…”
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Life cycle assessment of geopolymer concrete by Salas, Daniel A., Ramirez, Angel D., Ulloa, Nestor, Baykara, Haci, Boero, Andrea J.

“…[Display omitted] •An LCI of geopolymer concrete was scaled-up from laboratory to industrial scale.•The source of NaOH for geopolymer concrete production…”
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Influence of alkali molarity on compressive strength of high-strength geopolymer concrete using machine learning techniques based on curing regimes and temperature by Ulloa, Néstor, Onyelowe, Kennedy C., Ebid, Ahmed M., Curay Yaulema, Carlos Santiago, Zuiga Rodguez, Maia Gabriela, Adrade Vally, Aleis Ivan, Onyia, Michael E.

“…The compressive strength behavior of high-strength geopolymer concrete (HSGPC) has been studied in this research work with varying alkali concentration using…”
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Efficiency and stability enhancement in FA-based perovskite solar cells using controlled reduction of graphene oxide interlayer – An experimental investigation by Alabada, Rusul, Kumar, Anjan, Ulloa, Nestor, Vaca Barahona, Byron, García, Félix, Makrariya, Atul

“…Reduced graphene oxide (rGO) as an interlayer and interface engineer, due to its conductivity and hydrophobicity, can be coated on top of perovskite layers to…”
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Calotropis-mediated biosynthesis of TiO2@SnO2/Ag nanocomposites for efficient perovskite photovoltaics by Kumar, Anjan, K.A. Mohammed, Mustafa, A.Telba, Ahmad, Mahrous Awwad, Emad, Ulloa, Nestor, Vaca Barahona, Byron, Kaur, Harpreet, Singh, Parminder

“…In this study, green SnO2@TiO2 nanocomposites were initially synthesized using an extract from the Calotropis plant as an electron transfer material for…”
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The impact of Si and Cu doping upon the sensing capability of BN nano-tube in detecting diazomethane by Kumar, Anjan, Sabugaa, Michael M., Ulloa, Nestor, Moreno, Mónica, Vargas-Portugal, S. Kevin, Molani, Farzad, Lagum, Abdelmajeed Adam, Kadhim, Mustafa M.

“…The hybrid exchange-correlation functional B3LYP is used to see how Si and Cu-doping impacts upon the sensing capability of a BN nano-tube (BNNT) in detecting…”
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Design a promising electro-catalyst for oxygen reduction reaction in fuel cells based on transition metal doped in BN monolayer by Hsu, Chou-Yi, Ulloa, Nestor, Naranjo Vargas, Eugenia Mercedes, Saraswat, Shelesh Krishna, Saeed, Shakir Mahmood, Vargas-Portugal, S. Kevin, Majdi, Hasan Sh, Lagum, Abdelmajeed Adam

“…The kinetic of the oxygen reduction reaction (ORR) at the cathodes of polymer-electrolyte-membrane fuel cells (PEMFCs) has been demonstrated to be slow, which…”
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Beryllium oxide fullerene-like as a highly efficient sensor for formaldehyde: a DFT inspection by Choto, Santiago, Calispa, Marcelo, Ulloa, Nestor, Kumar, Anjan, Taki, Anmar Ghanim, Thabit, Russul, Adhab, Ayat Hussein, Rashed, Ahmad, Xiang, Zhang

“…In tropospheric hydrocarbon oxidation triggered by the OH radical, formaldehyde (H2CO) is an essential reactive intermediate product. because of its toxicity…”
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Formaldehyde chemical sensor based on the Pt- and Pd-decorated GaN nanotubes by Ulloa, Nestor, Yadav, Anupam, Abdalhuseen, Rasha Ali, alkhudhur salman, Noor abd, Mohammed, Nerain, Hussein, Sinan F., Almulla, Abbas Firras, Alsalamy, Ali

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Designing a promising electrocatalysts based on iron single-atom doped in graphyne-like BN-yne for water splitting application by Uwamungu, Jean Yves, Seemaladinne, Ramanjaneyulu, Yadav, Anupam, Ulloa, Nestor, Al-Musawi, Tariq J, Lagum, Abdelmajeed Adam, Al-Ma'abreh, Alaa M., Kadhim, Mustafa M.

“…An important step in developing clean energy technologies is to develop highly active and economical electrocatalysts for overall water splitting. Owing to the…”
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