"Indictment. At a Circuit Court of the United States of America for the First Circuit, begun and holden at Boston ... "--P. [2]. "A section of Blunt's chart of ...
0000 - Gale Group | SASII
Patricia Cazón, Eduardo Morales‐Sánchez, Gonzalo Velázquez, Manuel Vázquez,
In recent years, the food industry has been undergoing major changes driven by new social and environmental demands. Nowadays, biodegradable packaging is perceived as the most feasible alternative for food packaging. Great efforts are being devoted to the development of new materials from agro-industrial wastes and byproducts that are opening new alternatives and trends in the biopolymer sector. The aim of this laboratory exercise is to provide a tool to motivate active learning of new technologies ...
Tópico(s): Advanced Sensor and Energy Harvesting Materials
2022 - American Chemical Society | Journal of Chemical Education
"Indictment. At a Circuit Court of the United States of America for the First Circuit, begun and holden at Boston ... "--P. [2]. "A section of Blunt's chart of ...
0000 - Gale Group | Sabin
Patricia Cazón, Gonzalo Velázquez, Manuel Vázquez,
Bacterial cellulose is a biopolymer that is gaining attention due to its 3D structure, higher purity, porosity and surface area. However, this material can interact with water molecules from the surrounding environment, resulting in alterations of its properties. Hence, the purpose of this study was to analyze the modifications on the mechanical, water vapor permeability and optical properties of bacterial cellulose films as a function of the water activity. Results indicated that water acted as ...
Tópico(s): Polysaccharides and Plant Cell Walls
2020 - Elsevier BV | Food Packaging and Shelf Life
Patricia Cazón, Gonzalo Velázquez, Manuel Vázquez,
Tópico(s): Electrospun Nanofibers in Biomedical Applications
2020 - Springer Science+Business Media | Cellulose
Patricia Cazón, Gonzalo Velázquez, Manuel Vázquez,
Regenerated cellulose-based films combined with glycerol and polyvinyl alcohol (PVOH) show interesting UV-light barrier properties, with potential application in food packaging to prevent oxidative deterioration. However, these materials are sensitive to moisture, and their properties could be modified as a function of the relative humidity. Hence, the objective of the present work was to evaluate the changes in the main properties of regenerated cellulose-glycerol-PVOH films depending on the relative ...
Tópico(s): Postharvest Quality and Shelf Life Management
2020 - Elsevier BV | Food Hydrocolloids
Arturo Iván Pavón-Hernández, Eustolia Rodríguez-Velázquez, Manuel Alatorre‐Meda, José Trinidad Elizalde Galindo, F. Paraguay‐Delgado, Antonio Tirado-Guízar, Georgina Pina‐Luis,
Multifunctional nanoparticles with magnetic and fluorescent properties have high potential in different areas. A very attractive feature of these nanoparticles is that they can be controlled by an external magnetic field and monitored by fluorescence. For biological applications, the magnetic nanoparticles (MNPs) must be biocompatible and dispersible in water, which requires surface modification. This paper describes the synthesis of Fe3O4 MNPs modified with three amino acids (AA): L-Tryptophan (Trp), ...
Tópico(s): Nanocluster Synthesis and Applications
2020 - Elsevier BV | Materials Chemistry and Physics
Patricia Cazón, Gonzalo Velázquez, Manuel Vázquez,
Bacterial cellulose (BC) produced by Komagataeibacter xylinus is a biomaterial with a unique three-dimensional structure. To improve the mechanical properties and reinforce the BC films, they were immersed in polyvinyl alcohol (0–4%) and chitosan (0–1%) baths. Moisture content, mechanical properties and water vapour permeability were measured to assess the effect of polyvinyl alcohol and chitosan. The morphology, optical, structural and thermal properties were evaluated by scanning electron microscopy, ...
Tópico(s): Electrospun Nanofibers in Biomedical Applications
2019 - Elsevier BV | Carbohydrate Polymers
Patricia Cazón, Gonzalo Velázquez, Manuel Vázquez,
Highly flexible composite films based on bacterial cellulose, glycerol and polyvinyl alcohol (PVOH) with UV barrier properties were developed. The open nanoscale network of bacterial cellulose allowed to combine it with glycerol and polyvinyl alcohol by immersion. This procedure kept intact the bacterial cellulose structure. The interactions among bacterial cellulose, glycerol and PVOH were analyzed using scanning electron microscopy, infrared spectroscopy, thermogravimetry and differential scanning ...
Tópico(s): Electrospun Nanofibers in Biomedical Applications
2019 - Elsevier BV | Food Hydrocolloids
Doris E. Ramírez‐Herrera, Eustolia Rodríguez-Velázquez, Manuel Alatorre‐Meda, F. Paraguay‐Delgado, Antonio Tirado-Guízar, Pablo Taboada, Georgina Pina‐Luis,
In the present work, we synthesize Near Infrared (NIR)-emitting alloyed mercaptopropionic acid (MPA)-capped CdTeSe quantum dots (QDs) in a single-step one-hour process, without the use of an inert atmosphere or any pyrophoric ligands. The quantum dots are water soluble, non-toxic, and highly photostable and have high quantum yields (QYs) up to 84%. The alloyed MPA-capped CdTeSe QDs exhibit a red-shifted emission, whose color can be tuned between visible and NIR regions (608–750 nm) by controlling the ...
Tópico(s): Nanocluster Synthesis and Applications
2018 - Multidisciplinary Digital Publishing Institute | Nanomaterials
Patricia Cazón, Gonzalo Velázquez, Manuel Vázquez,
Cellulose is considered as an alternative for the demand of biocompatible and environmentally friendly food packaging. The aim of this study was to evaluate a composite film from regenerated cellulose combined with polyvinyl alcohol. Glycerol was used as a plasticizer. Mathematical models were used to describe the effect of the film structure on the mechanical (tensile strength, percentage of elongation at break) and barrier properties (water vapour permeability, light-barrier properties and transparency). ...
Tópico(s): biodegradable polymer synthesis and properties
2018 - Elsevier BV | Food Hydrocolloids
Eustolia Rodríguez-Velázquez, Manuel Alatorre‐Meda, João F. Mano,
Polysaccharides belong to a special class of biopolymers that has been used in different areas of research and technology for some years now. They present distinctive features attractive for the biomedical field. Among others, as extracted from natural sources, these materials are usually biocompatible and possess a significant ability to absorb water. Moreover, they can be conveniently modified by chemical means so as to display improved biological and physicochemical properties. The last but not ...
Tópico(s): Tissue Engineering and Regenerative Medicine
2015 - Bentham Science Publishers | Current Pharmaceutical Design
Adán Enrique Gómez-González, Ernesto Velázquez‐Velázquez, Manuel de Jesús Anzueto-Calvo, Maritza Fabiola Maza-Cruz,
The Grijalva River basin is one of the largest hydrological systems in Central America. Despite its importance, an inventory of its ichthyofauna remains incomplete. We provide a systematic checklist of fishes recorded in the Grijalva River basin based on surveys performed from 2002 to 2015. The systematic list includes 92 species, belonging to 13 orders, 25 families and 50 genera, of which 83 species are native and nine are exotics. This checklist includes three range expansions (Profundulus hildebrandi, ...
Tópico(s): Fish Ecology and Management Studies
2015 - Pensoft Publishers | Check List
José F. Cobo‐Díaz, Pilar Martínez‐Hidalgo, Antonio J. Fernández‐González, Eustoquio Martínez‐Molina, Nicolás Toro, Encarna Velázquez, Manuel Fernández‐López,
Tópico(s): Nematode management and characterization studies
2013 - Elsevier BV | Systematic and Applied Microbiology
José A. Ramı́rez, Rocı́o M. Uresti, Gonzalo Velázquez, Manuel Vázquez,
The restructuring process offers to fish processors the opportunity to obtain new products, taking advantage of both low-value fish species and remains from filleting and other processing operations. However, mechanical and functional properties of restructured products depend on the biochemical and physicochemical properties of muscle proteins, mainly myosin and actomyosin. In this regard, the biochemistry of fish muscle is different from that of mammals and birds. Therefore, fish products must ...
Tópico(s): Proteins in Food Systems
2011 - Elsevier BV | Food Hydrocolloids
Araceli Hernández-Briones, Gonzalo Velázquez, Manuel Vázquez, José A. Ramı́rez,
Fish gelatin is a food additive obtained after hydrolysis of collagen from fish skin. The importance of fish gelatin as a food additive is increasing due to its increased commercial availability. Surimi is washed minced fish meat used as the raw material for seafood analogs like crabmeat substitutes. The most important attributes of surimi are gelling and whiteness. The objective of this work was to determine the effect of using fish gelatin as an additive in surimi to improve the mechanical and ...
Tópico(s): Dyeing and Modifying Textile Fibers
2009 - Elsevier BV | Food Hydrocolloids
José A. Ramı́rez, NUBIA R. RODRÍGUEZ, Rocı́o M. Uresti, Gonzalo Velázquez, Manuel Vázquez,
Tópico(s): Meat and Animal Product Quality
2006 - Elsevier BV | Food Hydrocolloids
José A. Ramı́rez, Alberto Del Angel, Rocı́o M. Uresti, Gonzalo Velázquez, Manuel Vázquez,
Striped mullet (Mugil cephalus) is an abundant fish species in the north side of the Gulf of Mexico. Despite its high volume of capture for the commercialization of roe, the flesh of striped mullet is underutilized because of its dark colour and unpleasant odour. The objective of this work was to determine the feasibility of obtaining restructured products from striped mullet aided by additives. Microbial transglutaminase (MTGase) or whey protein concentrate (WPC) were used as binders. Two concentrations ...
Tópico(s): Meat and Animal Product Quality
2006 - Elsevier BV | Food Chemistry
Rocı́o M. Uresti, Gonzalo Velázquez, Manuel Vázquez, José A. Ramı́rez, J. Antonio Torres,
The interest in safer raw fish products obtained by high pressure processing is increasing. However, the pressure (higher than 400 MPa) and time (1–5 min) needed to reduce the microbial load in muscle products denatures myofibrillar proteins and changes their mechanical, functional and visual properties. The objective for this study was to evaluate the stabilizing effect of sucrose, trehalose, sorbitol and their mixtures (1:1) on myofibrillar arrowtooth flounder (Atheresthes stomias) proteins subjected ...
Tópico(s): Bee Products Chemical Analysis
2005 - Elsevier BV | Food Hydrocolloids
José A. Ramı́rez, Alfredo del Ángel, Gonzalo Velázquez, Manuel Vázquez,
Tópico(s): Protein Hydrolysis and Bioactive Peptides
2005 - Springer Science+Business Media | European Food Research and Technology
Rocı́o M. Uresti, Gonzalo Velázquez, Manuel V�zquez, Jos� A. Ram�rez, J. Antonio Torres,
Tópico(s): Protein Hydrolysis and Bioactive Peptides
2004 - Springer Science+Business Media | European Food Research and Technology
Rocı́o M. Uresti, Gonzalo Velázquez, Manuel Vázquez, José A. Ramı́rez, J. Antonio Torres,
The objective of this study was to evaluate the effect of setting conditions (25 °C for 2 h or 40 °C for 30 min) and combining of microbial transglutaminase (MTGase) and high pressure processing (HPP) on the mechanical properties of heat induced gels obtained from paste from arrowtooth flounder (Atheresthes stomias). Treatments included fish paste control without added MTGase, fish paste incubated with MTGase but not pressurized (MTGase + cooking), fish paste incubated with MTGase and pressurized at 600 ...
Tópico(s): Healthcare and Venom Research
2004 - Elsevier BV | Food Chemistry
Rosario Velázquez, Manuel Rodríguez, C.A. Navascués, Antonio Linares, Ramón Pérez, Nieves G. Sotorríos, Isabel Martínez, Luı́s Rodrigo,
Better knowledge of the risk factors associated with the appearance of hepatocellular carcinoma (HCC) could improve the efficacy of surveillance programs. A total of 463 patients aged 40 to 65 years with liver cirrhosis in Child-Pugh class A or B were included in a program of early diagnosis. The predictive value of different risk factors was evaluated using the Kaplan-Meier method and Cox regression model. Thirty-eight patients developed HCC. In the multivariate analysis, 4 variables showed an independent ...
Tópico(s): Liver Disease and Transplantation
2003 - Lippincott Williams & Wilkins | Hepatology
Casimiro Quiñónez‐Velázquez, Manuel O. Nevárez-Martı́nez, Marı́a Georgina Gluyas-Millán,
The otolith microstructure of juvenile Pacific sardine, Sardinops caeruleus, was examined to estimate age, growth, and back-calculated hatching-date distributions. Hatching-date distributions were corrected to mortality. Juveniles were collected from the Gulf of California during February 1995, January‐February and June 1996. Estimated ages of juveniles ranged from 43 to 158 days (26‐105 mm SL). A Gompertz growth model provided a good description (r 2 a0.77) of the length-at-age relationship. The ...
Tópico(s): Fish Ecology and Management Studies
2000 - Elsevier BV | Fisheries Research
Miguel A. Peinado, Sergei Malkhosyan, Antonia Velázquez, Manuel Perucho,
The arbitrarily primed polymerase chain reaction (AP-PCR) [Welsh, J. & McClelland, M. (1990) Nucleic Acids Res. 18, 7213-7218] has been used to detect somatic genetic alterations in tumors of the colon and rectum. DNA fingerprints generated by single arbitrary primers were compared between normal and tumor tissue of the same individuals. AP-PCR bands showing decreased and increased intensities in tumor tissue DNA, relative to normal, have been cloned after reamplification with the same arbitrary primer. ...
Tópico(s): Cancer-related Molecular Pathways
1992 - National Academy of Sciences | Proceedings of the National Academy of Sciences
Michael G. Barbour, W. D. Billings,
... William Dwight Billings 15. Mexican temperate vegetation Alejandro Velazquez, Victor Manuel Toledo and Isolda Luna 16. The Caribbean Ariel ...
Tópico(s): Rangeland and Wildlife Management
1988 - Association of College and Research Libraries | Choice Reviews Online
Salvador Chulián, Alvaro A. Martinez, Victor M. Pérez-Garcı́a, M. Rosa, Cristina Blázquez Goñi, Juan Francisco Rodríguez Gutiérrez, Lourdes Hermosín-Ramos, Águeda Molinos Quintana, Teresa Caballero‐Velázquez, Manuel Ramı́rez, Ana Castillo Robleda, Juan Luis Fernández‐Martínez,
Artificial intelligence methods may help in unveiling information that is hidden in high-dimensional oncological data. Flow cytometry studies of haematological malignancies provide quantitative data with the potential to be used for the construction of response biomarkers. Many computational methods from the bioinformatics toolbox can be applied to these data, but they have not been exploited in their full potential in leukaemias, specifically for the case of childhood B-cell Acute Lymphoblastic ...
Tópico(s): Chronic Lymphocytic Leukemia Research
2020 - Multidisciplinary Digital Publishing Institute | Cancers
Patricia Sánchez‐Velázquez, Manuel Pera, Javier Gimeno, Ana Zapatero, J. Nolla, Miguél Pera,
Mucormycosis is a rare and often fatal opportunistic infection that especially occurs in immunocompromised patients. Primary gastrointestinal infection is uncommon and accounts for only approximately 7% of all cases of mucormycosis but it is associated with an 85% mortality rate due to perforation and massive bleeding. Very few cases of gastrointestinal mucormycosis in an immunocompetent host have been reported. We describe a case of gastric necrosis and massive bleeding due to fulminant invasive ...
Tópico(s): Pneumocystis jirovecii pneumonia detection and treatment
2016 - Arán Ediciones | Revista Española de Enfermedades Digestivas
José A. Ramı́rez, Alfredo del Ángel, Rocı́o M. Uresti, Gonzalo Velázquez, Manuel Vázquez,
Summary Striped mullet ( Mugil cephalus ) and mexican flounder ( Cyclopsetta chittendenni ) are two abundant fish species in the north of the Gulf of Mexico. Both species are caught in large volume but their flesh is underutilised. The objective of this work was to determine the feasibility of obtaining restructured product from both fishes and their mixture (1:1) using two levels of salt (10 or 20 g kg −1 ). Changes in mechanical properties (texture profile analysis and puncture test), expressible water and colour ...
Tópico(s): Meat and Animal Product Quality
2007 - Wiley | International Journal of Food Science & Technology
Stephanía Velázquez-Olvera, Héctor Salgado‐Zamora, Manuel Velázquez, Elena Campos, Alicia Reyes‐Arellano, Cuauhtémoc Pérez‐González,
Abstract Background Imidazo[1,2-a]pyridines and pyrimidines are important organic fluorophores which have been investigated as biomarkers and photochemical sensors. The effect on the luminescent property by substituents in the heterocycle and phenyl rings, have been studied as well. In this investigation, series of 3-hydroxymethyl imidazo[1,2-a]pyridines and pyrimidines were synthesized and evaluated in relation to fluorescence emission, based upon the hypothesis that the hydroxymethyl group may ...
Tópico(s): Synthesis and Biological Evaluation
2012 - BioMed Central | Chemistry Central Journal