Fernando Rojas
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View article: SERVQUAL Model with Interrelated Dimensions. The Case of The Pharmacy in Mexico.
SERVQUAL Model with Interrelated Dimensions. The Case of The Pharmacy in Mexico. Open
This research is focused on understanding the interrelation between the different dimen- sions of the SERVQUAL model in the pharmaceutical area, which have differences in per- ceptions of service domains depending on the cultures in which …
View article: Development of a new cathode for the electro-Fenton process combining carbon felt and iron-containing organic–inorganic hybrids
Development of a new cathode for the electro-Fenton process combining carbon felt and iron-containing organic–inorganic hybrids Open
New kinds of electrodes were prepared for implementation in the electro-Fenton process. Based on carbon felt/organic–inorganic talc like hybrid (TLH), the electrodes were successfully prepared by a simple one-step sol–gel procedure at room…
View article: Estimation of Nanoporosity of ZSM-5 Zeolites as Hierarchical Materials
Estimation of Nanoporosity of ZSM-5 Zeolites as Hierarchical Materials Open
The nanoporosity in zeolite ZSM-5 was analyzed as a function of SiO2/Al2O3 molar ratio (MR). The internal pore structure was studied by high-resolution adsorption. Surface areas, microporous volume, characteristic energy of sorption, and p…
View article: Adsorption of N2, NO2 and CO2 on Epistilbite Natural Zeolite from Jalisco, Mexico after Acid Treatment
Adsorption of N2, NO2 and CO2 on Epistilbite Natural Zeolite from Jalisco, Mexico after Acid Treatment Open
Emissions of carbon dioxide (CO2) and nitrogen dioxide (NO2) in recent years has been increased considerably. One way to reduce the concentration of these greenhouse gases in the atmosphere is adsorptive capture. This paper describes the m…
View article: Nanoporosity of MCM-41 Materials and Y-Zeolites Created by Deposition of<i> Tournefortia hirsutissima L.</i> Plant Extract
Nanoporosity of MCM-41 Materials and Y-Zeolites Created by Deposition of<i> Tournefortia hirsutissima L.</i> Plant Extract Open
Hybrid materials based on MCM-41 silica and Y-zeolites with a variable Si/Al ratio and an appropriate countercationic composition were prepared by impregnating inorganic substrates with an organic extract. The organic phase was previously …
View article: Optimal Surface Amino-Functionalization Following Thermo-Alkaline Treatment of Nanostructured Silica Adsorbents for Enhanced CO2 Adsorption
Optimal Surface Amino-Functionalization Following Thermo-Alkaline Treatment of Nanostructured Silica Adsorbents for Enhanced CO2 Adsorption Open
Special preparation of Santa Barbara Amorphous (SBA)-15, mesoporous silica with highly hexagonal ordered, these materials have been carried out for creating adsorbents exhibiting an enhanced and partially selective adsorption toward CO2. T…
View article: Optimal Surface Amino-Functionalization Following Thermo-Alkaline Treatment of Nanostructured Silica Adsorbents for Enhanced and Selective CO<sub>2</sub> Adsorption
Optimal Surface Amino-Functionalization Following Thermo-Alkaline Treatment of Nanostructured Silica Adsorbents for Enhanced and Selective CO<sub>2</sub> Adsorption Open
Special preparation of SBA-15 materials has been carried out for creating adsorbents exhibiting an enhanced and selective adsorption toward CO2. This creation starts from an adequate conditioning of the silica surface, via a thermo-alkalin…
View article: Chlorophyll a Covalently Bonded to Organo-Modified Translucent Silica Xerogels: Optimizing Fluorescence and Maximum Loading
Chlorophyll a Covalently Bonded to Organo-Modified Translucent Silica Xerogels: Optimizing Fluorescence and Maximum Loading Open
Chlorophyll is a pyrrolic pigment with important optical properties, which is the reason it has been studied for many years. Recently, interest has been rising with respect to this molecule because of its outstanding physicochemical proper…
View article: N2 and CO2 Adsorption by Soils with High Kaolinite Content from San Juan Amecac, Puebla, México
N2 and CO2 Adsorption by Soils with High Kaolinite Content from San Juan Amecac, Puebla, México Open
Carbon dioxide (CO2) is considered one of the most important greenhouse gases in the study of climate change. CO2 adsorption was studied using the gas chromatography technique, while the Freundlich and Langmuir adsorption models were emplo…
View article: SUSTEINABLE SUPPLY POLICES FOR OPTIMIZATION OF CONTRIBUTION MARGINS IN FOODSERVICE AND NUTRITION CHILEAN: A CASE STUDY
SUSTEINABLE SUPPLY POLICES FOR OPTIMIZATION OF CONTRIBUTION MARGINS IN FOODSERVICE AND NUTRITION CHILEAN: A CASE STUDY Open
This case study highlights the importance of operations management in the area of, supplies of food service companies and Chilean nutrition. It was proposed to establish and evaluate financial policies for the supply of raw materials in th…
View article: Textural Properties of Hybrid Biomedical Materials Made from Extracts of<i>Tournefortia hirsutissima</i>L. Imbibed and Deposited on Mesoporous and Microporous Materials
Textural Properties of Hybrid Biomedical Materials Made from Extracts of<i>Tournefortia hirsutissima</i>L. Imbibed and Deposited on Mesoporous and Microporous Materials Open
Our research group has developed a group of hybrid biomedical materials potentially useful in the healing of diabetic foot ulcerations. The organic part of this type of hybrid materials consists of nanometric deposits, proceeding from the …
View article: Comparative Study of the Optical and Textural Properties of Tetrapyrrole Macrocycles Trapped Within ZrO2, TiO2, and SiO2 Translucent Xerogels
Comparative Study of the Optical and Textural Properties of Tetrapyrrole Macrocycles Trapped Within ZrO2, TiO2, and SiO2 Translucent Xerogels Open
The entrapping of physicochemical active molecules inside mesoporous networks is an appealing field of research due to the myriad of potential applications in optics, photocatalysis, chemical sensing, and medicine. One of the most importan…