Article
Chemistry, Multidisciplinary
Sarith Subramaniam, Sabine Hoffmann, Sridhar Thyageswaran, Greg Ward
Summary: This paper describes the methodology of using the open-source raytracing software RADIANCE for view factor calculations. The results are validated by comparing with analytical solutions, demonstrating the effectiveness and scalability of the proposed method.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Civil
Mingfeng Huang, Gui Tang, Yi-Qing Ni
Summary: A novel framework for assessing dynamic wind resistance reliability of long-span roof structures under various wind attack angles has been proposed, integrating wind tunnel experiments, Monte Carlo simulation method, and non-Gaussian wind pressure field simulation technique. It considers uncertainties in design wind speed, wind directionality, structural damping ratio, as well as randomness of non-Gaussian wind pressure field. The framework has been demonstrated to be effective and efficient in comprehensively assessing wind-induced dynamic reliability of long-span roof structures in rectangular arrays, with annual failure probability determined through first passage reliability of displacement responses.
JOURNAL OF CIVIL STRUCTURAL HEALTH MONITORING
(2021)
Article
Construction & Building Technology
Pengcheng Wang, Zhongbing Liu, Sitan Xi, Yichi Zhang, Ling Zhang
Summary: In this study, an adaptive building roof (ABR) combining variable transparency shape-stabilized phase change material (VTSS-PCM) is proposed. A numerical model is developed to analyze the radiation properties of VTSS-PCM, and the performance of ABR is compared with a common insulation roof. Global sensitivity analysis is conducted to identify key parameters, and the influences of these parameters on ABR performance are studied. The results demonstrate the effectiveness of ABR in reducing heat gain, and the importance of thickness, extinction coefficient, and albedo of the materials used.
ENERGY AND BUILDINGS
(2022)
Article
Energy & Fuels
Enrico Prataviera, Jacopo Vivian, Giulia Lombardo, Angelo Zarrella
Summary: The energy consumption of cities is increasing rapidly due to global population growth and urbanization. Using Urban Building Energy Models (UBEMs) to simulate energy demand in different urban scenarios shows promise. However, uncertainty in input parameters and the lack of high-quality, open energy consumption data hinder the effective use of UBEMs. This study proposes a method that combines physics-based UBEMs with Uncertainty and Sensitivity Analysis to obtain reliable urban simulations, using aggregated energy use data from regional/national statistics.
Article
Thermodynamics
Peng Zhang, Lidan Zhang
Summary: The study utilized a sophisticated Monte Carlo model to quantitatively investigate the temperature rise phenomenon during SEM imaging. The results revealed the temperature rise characteristics of different materials and the influencing factors, which is significant for understanding the physical mechanism of electron-beam-induced deposition.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Article
Energy & Fuels
Jessica N. Castillo, Verny F. Resabala, Luigi O. Freire, Byron P. Corrales
Summary: Research and algorithms are being developed worldwide to predict and estimate the consumption of electrical energy in buildings and other facilities. This particular study developed a mathematical model to simulate the energy consumption of a building's main electrical loads. By collecting and analyzing data, the researchers proposed a solution to optimize the building's energy consumption profile.
Article
Geochemistry & Geophysics
Anthony Carreon, Antonio Macias, Andy Hsu, Daniel F. Berisford, David B. Goldstein, Philip Varghese, Laurence Trafton, Kevin P. Hand, Jordan Steckloff, Arnaud Mahieux
Summary: By developing a Monte-Carlo-based radiative heat transfer model, we were able to simulate solar exposure and subsequent warming of snow and ice surfaces, and investigate the conditions that could lead to morphological changes on the surface of Europa.
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
(2023)
Article
Construction & Building Technology
Tatsuhiro Yamamoto, Akihito Ozaki, Suehiro Kaoru, Kazuhiro Taniguchi
Summary: A thermal environment simulation method was developed for a structure with a thermally complex building envelope, which combined heat transfer simulation, computational fluid dynamics, and a two-dimensional heat-flow calculation tool. The accuracy of the method was verified and validated, investigating the influence of calculation accuracy by comparing the accuracies with and without the coupling of the convective heat transfer coefficient. Through computational load reduction, computational accuracy was achieved with a small number of couplings.
BUILDING AND ENVIRONMENT
(2021)
Article
Pharmacology & Pharmacy
Hao Lou, Cory Berkland, Michael J. Hageman
Summary: This study utilized Monte Carlo method to simulate particle movement inside the SCISSOR instrument and thoroughly investigated a series of parameters related to the instrument, injection device, operation, formulation, and medium. The results showed that factors such as membrane area and position, diffusivity, and injection position significantly affected release profile, while binding slowed down release and aggregation reduced release percentage and rate. The study suggests that Monte Carlo method could be a useful tool for supporting multiple development activities in experimental design, parameter sensitivity analysis, and control strategy development.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2021)
Article
Thermodynamics
Y. Elaouzy, El Fadar
Summary: Renewable and bioclimatic techniques are crucial for sustainable buildings. The effectiveness of integrating PV, PVT, GSHP, and GR systems into a residential building in different Moroccan climates is investigated in this study. The simulations using EnergyPlus software showed that PV and PVT technologies performed the best in terms of energy, environment, and economics in all climates, while GSHP and GR techniques were beneficial in energy and environmental aspects but inefficient in economic terms. Carbon taxation had a positive impact on the economic benefits of these techniques. The findings can also be applied to other locations with similar climates and energy policies.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Construction & Building Technology
D. Lopez-Silva, R. Mendez-Alonzo, D. Sauceda-Carvajal, E. Sigala-Meza, I Zavala-Guillen
Summary: Accelerated population growth and urbanization have negative impacts on the environment. However, green roofs can mitigate these impacts and improve quality of life in cities. This study analyzes the thermal performance of different green roof modules and finds that vegetated covers can reduce temperature oscillation and act as thermal regulators.
BUILDING AND ENVIRONMENT
(2022)
Article
Nuclear Science & Technology
E. A. Dolzhenkov, K. S. Dolganov, A. Kapustin, A. E. Kiselev, N. Ryzhov, T. A. Yudina
Summary: This study estimates the accuracy of system code SOCRAT/V3 in simulating heat transfer in a vertically cylindrical pool of volumetrically heated liquid using ASME V&V 20 standard, and finds that the traditional approach for accuracy estimation may underestimate the modeling error interval.
ANNALS OF NUCLEAR ENERGY
(2021)
Article
Microbiology
Sarah Kim, Walter M. Yamada, Brandon Duncanson, Jocelyn Nole, Stephanie Rogers, Sarah Parker, Meredith Bacci, Nino Mtchedlidze, Charles A. Peloquin, Arnold Louie, Stephan Schmidt, George L. Drusano, Michael N. Neely
Summary: The study utilized a model-informed strategy to accelerate discovery of drug combinations against Mycobacterium tuberculosis in acid-phase metabolic state. The combination of pretomanid and moxifloxacin effectively eradicated M. tuberculosis and prevented emergence of less susceptible isolates in the acid growth phase. Adding bedaquiline as a third drug shortened the time to total and less susceptible bacterial suppression significantly faster than the 2-drug regimen.
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY
(2021)
Article
Environmental Sciences
Linying Wang, Maoyi Huang, Dan Li
Summary: Green roofs provide cooling benefits for the urban environment by enhancing evapotranspiration, which depends on soil moisture conditions requiring irrigation. The magnitude and spatial variability of cooling benefits are mainly controlled by irrigation amount and a surface energy redistribution factor. Convective heat transfer efficiency plays an important role in determining the amount of irrigation needed for decreasing green roof surface temperature, highlighting the importance of surface energy balance in constraining the cooling benefits of green roof irrigation.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Construction & Building Technology
Sanaz Tabatabaee, Amir Mahdiyar, Saeed Reza Mohandes, Syuhaida Ismail
Summary: This research developed an original risk assessment model for green roof adoption, using novel methods to analyze and rank risk factors. Key threats included irregular maintenance and fire incidents, while key opportunities included flood reduction and green building certification. Decision-makers can gain clear insights on the most influential positive and negative risks through this analysis.
SUSTAINABLE CITIES AND SOCIETY
(2022)
Article
Biochemistry & Molecular Biology
Gabriela Y. Campos Espinosa, Chibuike C. Udenigwe, Apollinaire Tsopmo
Summary: This study found that oat bran protein hydrolysates have antioxidant and bile acid-binding properties, which are important for preventing chronic diseases and stabilizing food quality.
JOURNAL OF FOOD BIOCHEMISTRY
(2022)
Article
Nuclear Science & Technology
C-A Cruz-Lopez, G. Espinosa-Paredes
Summary: The aim of this work is to develop fractional Bateman equations that can model memory effects in successive isotopes transformations. The proposed equations preserve the mathematical shape and symmetry of the standard equations, with the only difference being the use of the Mittag-Leffler function instead of the exponential one. Numerical experiments show that the proposed equations predict higher decay rates at lower time values compared to the standard equations.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2022)
Article
Nuclear Science & Technology
M. A. Polo-Labarrios, F. A. Godinez, S. Quezada-Garcia
Summary: Novel solutions to fractional neutron point kinetic equations were obtained using Caputo derivatives for three different cases. Numerical-analytical solutions were achieved for the first two cases using Laplace transform technique with Talbot's method, while analytical solutions for the third case were constructed using Chebyshev polynomials. The solutions predict inertia effects and neutron density behavior, showing growth to a peak followed by gradual decrease and oscillations before reaching a steady state.
ANNALS OF NUCLEAR ENERGY
(2022)
Article
Energy & Fuels
Carlos G. Aguilar-Madera, Gilberto Espinosa-Paredes, Erik C. Herrera-Hernandez
Summary: This work presents a new methodology for predicting the permeability of heterogeneous reservoirs by applying the Kriging method to generate permeability maps. The results suggest that this methodology can aid in understanding and interpreting permeability measurements at core and reservoir scales.
PETROLEUM SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Chemical
Jose V. V. Flores-Cano, Carlos G. G. Aguilar-Madera, Erik C. C. Herrera-Hernandez, G. Espinosa-Paredes, Jose P. P. Ruelas-Leyva, Victor Matias-Perez, Jorge A. A. Briones-Carrillo
Summary: Based on the Soave-Redlich-Kwong equation of state, empirical correlations for the K-values of N2, CO2, H2S, C1, and C2 were proposed in this study. The binary interaction coefficients involving the plus fraction, C7+, were optimized using experimental data. The form of the empirical correlations was selected based on the major dependencies of the equilibrium constants on system variables. The proposed correlations are useful for rapid vapor-liquid equilibrium calculations in petroleum reservoir compositional modeling.
INTERNATIONAL JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
J. Centeno-Perez, C. G. Aguilar-Madera, G. Espinosa-Paredes, E. C. Herrera-Hernandez, A. D. Perez-Valseca
Summary: This study investigates the mechanical properties of nuclear fuel pellets by calculating the upscaled elasticity modulus and new effective vector, allowing for consideration of different types of porosity. The findings are crucial for the design and performance evaluation of nuclear fuel.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Computer Science, Interdisciplinary Applications
Carlos-Antonio Cruz-Lopez, Gilberto Espinosa-Paredes, Juan-Luis Francois
Summary: In this work, a new analytical solution for the neutron point kinetics equations is developed, considering additional families of delayed neutrons and constant reactivity. The solution is obtained using Laplace transform method and theorems of Heaviside and Convolution. It does not require matrix methods for coefficient calculation and simplifies nested sums found in other analytical solutions.
COMPUTER PHYSICS COMMUNICATIONS
(2023)
Article
Thermodynamics
Heriberto Sanchez-Mora, Javier Ortiz-Villafuerte, Armando M. Gomez-Torres, Cesar Queral, Sergio Quezada-Garcia
Summary: This study investigates the cooling process during a severe accident in a nuclear reactor core. A reduced model with low computational cost is developed and numerically solved. The model considers heat transfer in fuel rods, thermohydraulic phenomena in the coolant, and hydrogen generation. The model is validated using experimental data and sensitivity analysis is performed to determine the parameters with the greatest impact on hydrogen generation.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Engineering, Multidisciplinary
E. C. Herrera-Hernandez, C. G. Aguilar-Madera, G. Espinosa-Paredes, D. Hernandez
Summary: Modeling fluid flow in highly heterogeneous porous media is a challenging research topic due to the complexities and uncertainties caused by spatial variations of media properties. In this study, a non-local model based on fractal continuum theory is proposed to describe single-phase flow in such media. The model incorporates generalized Laplacian operator and non-local Darcy's law to capture the effects of non-locality in fractal porous media. The analysis of flow dynamics reveals the significant influence of anomalous parameters on pressure and rate transients, providing valuable insights for understanding fluid flow in porous media with complex geometries.
JOURNAL OF ENGINEERING MATHEMATICS
(2023)
Article
Thermodynamics
Heriberto Sanchez-Mora, Sergio Quezada-Garcia, Marco Antonio Polo-Labarrios, Ricardo Isaac Cazares-Ramirez, Alejandro Torres-Aldaco
Summary: In this study, a dynamic heat transfer model was developed to investigate the two-phase flow through the absorber tube of a solar collector. The model took into account the temperature dependency of the thermophysical properties and solved the governing equations using numerical methods. The model was validated with experimental data and showed good performance.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Nuclear Science & Technology
Pradip Roul, Vikas Rohil, Gilberto Espinosa-Paredes, K. Obaidurrahman
Summary: This paper focuses on the development of a computational technique for numerical solution of the time-fractional neutron diffusion equation. By discretizing the time-fractional derivatives and space derivative using specific methods, the proposed technique provides a reliable approximation and demonstrates good convergence. The effect of fractional order derivative on the behavior of neutron flux is also investigated.
ANNALS OF NUCLEAR ENERGY
(2023)
Article
Engineering, Multidisciplinary
Alejandro Jaramillo-Mora, Armando Rojas-Morin, Sergio Quezada-Garcia, Javier Eduardo Aguillon-Martinez, Adrian Espinosa-Bautista, Yolanda Flores-Salgado, Omar Alvarez-Brito, Arturo Barba-Pingarron
Summary: A novel method utilizing concentrated solar energy (CSE) to generate printed circuits is proposed in this study. By depositing a conductive material inside a milled trench on a thermoplastic substrate, the concentrated solar beam melts the material and forms a solid trace. The hybrid joining between plastic and metal obtained through this method resembles those achieved by laser-assisted joining of metal-polymer. The study indicates that the intensity of direct solar radiation and overall system efficiency greatly influence the exposure time of the trace to the solar spot.
RESULTS IN ENGINEERING
(2023)
Article
Mathematics, Interdisciplinary Applications
F. A. Godinez, G. Fernandez-Anaya, S. Quezada-Garcia, L. A. Quezada-Tellez, M. A. Polo-Labarrios
Summary: Behavior analysis of the neutron point kinetic model with Caputo and conformable derivatives was conducted. Stability/instability zones within the anomalous diffusion exponent-reactivity parameter space were determined. The Almeida operator allowed for freely defining the kernel function, resulting in instabilities of different nature and stability/instability zones of varying shapes and sizes. Interestingly, the instability behavior zone with the exponential kernel could be reduced and approximated with the size predicted by the Caputo derivative.
FRACTALS-COMPLEX GEOMETRY PATTERNS AND SCALING IN NATURE AND SOCIETY
(2023)
Article
Nuclear Science & Technology
Yugesh C. Keluskar, Navin G. Singhaniya, Vishwesh A. Vyawahare, Chaitanya S. Jage, Parag Patil, Gilberto Espinosa-Paredes
Summary: This paper presents a novel parallel computing algorithm for solving nuclear reactor models, which achieves substantial speed up for different models used in the reactor.
ANNALS OF NUCLEAR ENERGY
(2024)
Article
Food Science & Technology
Gabriela Y. Campos Espinosa, Patricia Doerr de Quadros, Roberta R. Fulthorpe, Apollinaire Tsopmo
Summary: This study aimed to assess the impact of inoculated endophytic bacteria on vitamin concentrations and antioxidant activity in hydroponically grown sweet basil. Results showed that the presence of endophytes increased vitamin C and γ-tocopherol concentrations, as well as the antioxidant activity of the basil.
FRONTIERS IN SUSTAINABLE FOOD SYSTEMS
(2022)
