Acevedo-Parra, H. R.
Main Affiliation
Preferred name
Acevedo-Parra, H. R.
Official Name
Acevedo Parra, Héctor
ORCID
0000-0002-1491-5805
Researcher ID
X-3089-2018
Scopus Author ID
55364942400
10 results
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Item type:Publication, Fiber–matrix interaction governs compressive strength in agave-bagasse-reinforced adobe: a factorial experiment with two-way ANOVA and competing mechanism analysis(Frontiers Media SA, 2026-07-31) ;De-Obaldia-Escalante, Marcela; ; ; Varela-Aldás, JoséNatural-fiber reinforcement is widely cited as a pathway to improve the mechanical performance of adobe, but reported effects on compressive strength are inconsistent across studies: some find improvement, others find degradation, and the choice of experimental conditions rarely disentangles the role of the fiber from that of the matrix. This study quantifies the coupling through a balanced factorial experiment. Forty-nine adobe specimens of (Formula presented) cm were manufactured with three granular compositions (sand-dominated, jal-dominated, and balanced, where jal is a regional non-plastic silt of Jalisco, Mexico) and four mass fractions of agave-bagasse fiber (0%, 0.5%, 1%, and 2%), and were tested under Mexican standard NMX-C-036-ONNCCE by an accredited external laboratory. Three complementary analytical tools are applied to the resulting dataset: (i) a two-way analysis of variance (ANOVA), (ii) a reinforcement efficiency index (Formula presented) with bootstrap confidence intervals, and (iii) a competing mechanism phenomenological descriptor (Formula presented) that separates a saturating reinforcement term from a linear disruption term. The two-way ANOVA reveals a highly significant mixture–fiber interaction ((Formula presented), (Formula presented), and partial (Formula presented)), which is stronger than either main effect and statistically demonstrates that the sign of the fiber effect is not an intrinsic property of the fiber but rather a property of the fiber–matrix pair. For sand-containing mixtures, the reinforcement efficiency index is (Formula presented) [M1, 95% bootstrap CI (0.96, 1.32)] and (Formula presented) [M3, (0.92, 1.59)] at the optimum (Formula presented); a non-parametric bootstrap over 5, 000 resamples places the optimum at (Formula presented) with posterior probability (Formula presented) (M1) and (Formula presented) (M3). For the jal-dominated mixture, fiber inclusion is net destructive [(Formula presented), (0.68, 0.95) at (Formula presented)], with Welch (Formula presented)-tests rejecting equivalence with the control at (Formula presented) (0.5%) and (Formula presented) (2%) and Cohen’s effect sizes (Formula presented). The best-performing conditions yield mean compressive strengths of 3.22 MPa, which exceeds the 2.0 MPa minimum required by NMX-C-441-ONNCCE-2011 for non-structural masonry by 60%. An immersion test shows that unstabilized specimens disintegrate within 2–3 min, bounding applications to non-exposed or externally protected uses and defining the primary direction for future work. Copyright © 2026 De-Obaldia-Escalante, Del-Valle-Soto, Acevedo-Parra, Montoya-Márquez and Varela-Aldás. - Some of the metrics are blocked by yourconsent settings
Item type:Patent, Tapete receptor de residuos en mingitorios(IMPI) ;Villa López, Jose LuisLa presente invención se refiere a un dispositivo, para baños públicos o privados, que capte los orines residuales que caen a nivel del suelo del mingitorio de pared, es un apoyo para mantener limpios los baños en el área de sanitización. Consiste en un captador de pequeñas cantidades de orina que no caen en el mingitorio y un núcleo absorbente de los mismos, que gracias a su disposición logra captar una mayor cantidad de líquidos, y evitar a su vez la salida de malos olores, además de ser fácil en su uso, ya que al estar conformado por cartuchos reemplazables e intercambiables es más sencilla y rápida su limpieza.1 34 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Mass Flow Control Strategy for Maximum Energy Extraction in Thermal Energy Storage Tanks(ASME International, 2024-11-28); ; <jats:title>Abstract</jats:title> <jats:p>This paper introduces an experimental approach to enhance thermal energy storage (TES) tank performance by employing a novel control strategy and an automatic flow valve. The valve adjusts mass flow to minimize heat loss and maximize useful heat within a specified input–output temperature range. Experiments were conducted indoors, simulating input heat via an electric heating element, and adhering to ANSI/ASHRAE 93-2010 standards. In the proposed control strategy, the set point is self-regulated based on an input value which in this case is the heat introduced into the TES system. In this way, when there is more input heat available, the mass flow will increase to obtain more useful heat at the output and, on the contrary, when there is less heat available, the mass flow will be reduced to obtain greater exergy. A comparison between this strategy and conventional on–off control systems was conducted, evaluating their performance based on useful heat obtained over an 8-h period with varying input heat levels. Results demonstrate that the proposed flow control methodology consistently outperforms on–off control, achieving a maximum 13.56% increase in useful heat under optimal conditions. This underscores the effectiveness of the novel control strategy in maximizing thermal energy storage tank efficiency.</jats:p>39Scopus© Citations 1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Design and optimization methodology for different 3D processed materials (PLA, ABS and carbon fiber reinforced nylon PA12) subjected to static and dynamic loads(2024) ;S.L. Rodríguez-Reyna ;J.H. Díaz-Aguilera; ;Ch J. GarcíaEmmanuel J. Gutierrez-CastañedaScopus© Citations 4 15 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Improving the mechanical performance of 3D printed nylon through intelligent infill design(Springer Science and Business Media LLC, 2026-01-20) ;Reyna, Sandra L. Rodríguez ;Aguilera, Jorge H. Díaz; 19 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Effect of 3D printing by fused deposition modelling on the microstructural and macrostructural properties of acrylonitrile butadiene styrene, polylactic acid and polyamide 12(SAGE Publications, 2025-09-16); ; ;J.A. Guerrero de León ;Jorge H. Díaz A.S.L. Rodríguez-ReynaThe objective of this research was to find a relationship between the microstructural and macrostructural properties of polylactic acid, acrylonitrile butadiene styrene and polyamide 12 (PA12) when processed using fused deposition modelling. The crystallinity, enthalpy of crystallization (ΔHc), glass transition temperature (Tg) and Young's modulus (E) were evaluated. The results showed that crystallinity increased for all materials after the 3D printing process, leading to an increase in ΔHcand a decrease in Tg, particularly in PA12. This variation in microstructural properties resulted in a significant decrease in Young's modulus, indicating a reduction in the stiffness of the printed materials. The research suggests that an increase in crystalline material volume, resulting from polymer chain rearrangement during 3D printing, reduces the energy required for thermal softening and decreases the material's rigidity. © The Author(s) 202535 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Optimization of the mechanical behavior of ABS and PLA 3D printed using heat treatments(Springer Science and Business Media LLC, 2025-03-17) ;S. L. Rodríguez-Reyna ;J. H. Díaz-Aguilera; ;Vladimir Escobar-Barrios17Scopus© Citations 2 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Development and Characterization of a Biodegradable PLA Food Packaging Hold Monoterpene–Cyclodextrin Complexes against Alternaria alternata(2019); ; ;Nuño-Donlucas Sergio Manuel ;Núñez-Delicado EstrellaGabaldón José Antonio<jats:p>The fungi of the genus Alternaria are among the main pathogens causing post-harvest diseases and significant economic losses. The consumption of Alternaria contaminated foods may be a major risk to human health, as many Alternaria species produce several toxic mycotoxins and secondary metabolites. To protect consumer health and extend the shelf life of food products, the development of new ways of packaging is of outmost importance. The aim of this work was to investigate the antifungal capacity of a biodegradable poly(lactic acid) (PLA) package filled with thymol or carvacrol complexed in β-cyclodextrins (β-CDs) by the solubility method. Once solid complexes were obtained by spray drying, varying proportions (0.0%, 1.5%, 2.5%, and 5.0 wt%) of β-CD–thymol or β-CD–carvacrol were mixed with PLA for packaging development by injection process. The formation of stable complexes between β-CDs and carvacrol or thymol molecules was assessed by Fourier-transform infrared spectroscopy (FTIR). Mechanical, structural, and thermal characterization of the developed packaging was also carried out. The polymer surface showed a decrease in the number of cuts and folds as the amount of encapsulation increased, thereby reducing the stiffness of the packaging. In addition, thermogravimetric analysis (TGA) revealed a slight decrease in the temperature of degradation of PLA package as the concentration of the complexes increased, with β-CD–carvacrol or β-CDs–thymol complexes acting as plasticisers that lowered the intermolecular forces of the polymer chains, thereby improving the breaking point. Packages containing 2.5% and 5% β-CD–carvacrol, or 5% β-CD–thymol showed Alternaria alternata inhibition after 10 days of incubation revealing their potential uses in agrofood industry.</jats:p>1Scopus© Citations 62 14 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Topological Optimization of 3D Printed Nylon: Influence of Infill on Fatigue, UTS, and Porosity(Wiley, 2026-04-15) ;Rodríguez Reyna, Sandra L. ;Díaz Aguilera, Jorge H.; ;García, Ch. J.ABSTRACT5 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Study on the ultimate tensile stress and fatigue life in recycled PLA printed by FDM with different percentages of relative humidity(2025) ;S. L. Rodríguez-Reyna ;Fausto Ledezma-Mondragón ;J. H. Díaz-Aguilera; 24Scopus© Citations 2
