A5112196026- Concrete Corrosion and Durability
- Corrosion Behavior and Inhibition
- Smart Materials for Construction
- Proteins in Food Systems
- Concrete and Cement Materials Research
- High-Temperature Coating Behaviors
- Biodiesel Production and Applications
- Hydrogen embrittlement and corrosion behaviors in metals
- Pesticide Residue Analysis and Safety
- Polymer Surface Interaction Studies
- Lubricants and Their Additives
- Material Properties and Applications
- Electrodeposition and Electroless Coatings
- Analytical chemistry methods development
- Building materials and conservation
- Conservation Techniques and Studies
- Microencapsulation and Drying Processes
- Nanocomposite Films for Food Packaging
- Nanoparticle-Based Drug Delivery
- Agricultural and Food Production Studies
- Spectroscopy and Chemometric Analyses
- Hydrogels: synthesis, properties, applications
- Non-Destructive Testing Techniques
- Thermal and Kinetic Analysis
- Advanced Materials Characterization Techniques
Universidad de Guanajuato
2019-2025
Center for Research and Advanced Studies of the National Polytechnic Institute
1996-2023
Purdue University West Lafayette
2017-2021
Zamorano Pan-American Agricultural School
2020-2021
Instituto Politécnico Nacional
1993-2019
Universidad Marista de Mérida
2010-2015
International Potato Center
2009-2013
University of Zulia
2010
Instituto de Estudios Avanzados
1996
Forschungszentrum Jülich
1986
Two liquid chromatography procedures with PPO as IS were set up and implemented for the determination of eight fungicides in tanned leather; both suitable analytical control industrial products.
Abstract Small bars of Ti activated with mixed-metal oxide (commercially produced for permanent impressed-current anodes in cathodic protection) were used as embedded reference electrodes (RE) c...
Fourteen test sites were established in the tropical humid atmosphere of Yucatán Peninsula and Mexican Caribbean area. In each environment sulfur dioxide chloride deposition rates measured corrosion flat plate samples (low carbon steel, copper zinc) determined. selected locations open helix copper, low steel also tested. two typical (a rural-urban a marine-coastal) time-of wetness temperature registered, then their influence on metallic discussed. The obtained data used for classification...
In Honduras, corn is the most important staple food for majority of population. This high-demand crop susceptible to biological contamination with mycotoxins, which could represent a latent hazard consumers. To assess incidence aflatoxins and fumonisins in grain, masa tortilla, dietary exposure these substances among consumers, study was conducted four municipalities department Lempira. Total aflatoxin fumonisin content were quantified by fluorometry 144 samples from 48 farmers. Sixty five...
Abstract International Standard ISO 9223-92 permits the determination of atmospheric corrosivity based on either corrosion rates determined from annual tests several standard metals or time wetness (TOW) and pollution levels SO2 Cl−. Experience shows that rate is influenced by exposure angle plate specimens specimen form (flat wire open helix). These two factors, which are not discussed in standard, give rise to different values, amounts incident sunlight, temperatures, quantities deposited...
Purpose The purpose of this paper is to elucidate if there a loss in bond strength between galvanized steel used as reinforcement, and concrete water‐to‐cement (w/c) ratio 0.4 0.5, after both types sample were cured for seven, 21 28 days saturated calcium hydroxide solution, without curing. air permeability the was investigated at interfacial zone. Design/methodology/approach Structural low‐carbon embedded samples, prepared with Portland cement type I limestone (calcite 94‐97 percent)...
Abstract The time of incubation (TI) and chloride threshold (CT) necessary to initiate corrosion reinforcement steel are crucial variables predict the useful life an infrastructure in any model. For black there is a great amount data bibliography. However, for galvanized steel, very scarce tropical climates no exist. In this research, CT TI were determined embedded concretes with water/cement (w/c) ratios 0.4, 0.5, 0.6, 0.7. samples corroded under natural conditions north coast Yucatan...
Biodiesel, unlike diesel, is highly susceptible to autoxidation.This autoxidation a major concern for biodiesel producer.Various methods have been developed estimate the degree of oxidative stability biodiesel.These are useful compare and between different samples.However, an absolute value state will be more useful.In this study, we describe method estimating figure that can used as indicator oxidation level.This was determined from thermal decomposition curve biodiesel, obtained...
Purpose Reinforcing steel bars in concrete structures exposed to tropical marine atmospheres experience very high corrosion rates due several environmental factors. The aim of this research was mainly elucidate if zinc‐coated rebars may delay the onset and/or extend service life infrastructure tropics, as approach is promising other atmospheres. Design/methodology/approach Hot‐dip and plain were embedded cylinders made with local aggregates having four different water‐to‐cement ratios....