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Your search keyword '"Hernández-Escobar, Claudia A."' showing total 140 results
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140 results on '"Hernández-Escobar, Claudia A."'

2. Lithium Niobate Perovskite as the Support for Silver Nanoparticles for Non-Enzymatic Electrochemical Detection of Glucose.

Author

Piñón-Balderrama, Claudia Ivone, Manríquez-Tristán, Atenea, Maldonado-Orozco, María Cristina, Hernández-Escobar, Claudia Alejandra, Reyes-López, Simón Yobanny, Espinosa-Cristobal, León Francisco, and Zaragoza-Contreras, Erasto Armando

Subjects
ELECTROCHEMICAL sensors, NANOPARTICLES, DETECTION limit, PEROVSKITE, GLUCOSE
Abstract

Lithium niobate perovskite and silver nanoparticle-based nanocomposites (LNB:AgNPs) were explored for developing an electrochemical glucose sensor. The perovskite to silver nanoparticle ratios investigated were 4:1, 1:1, 1:2, 2:1, and 1:4. Among these, the 4:1 ratio, with the lowest silver content, demonstrated the most stable performance during glucose quantification via amperometry. The sensor's response was evaluated measuring the current at a fixed potential of 0.7 V following the injection of 1 mM glucose with each addition. The calibration curve obtained from the recorded data exhibited a linear response within the 1 to 15 mM glucose concentration range, achieving a sensitivity of 2 μA/mM, a high correlation coefficient (R2 = 0.997), and a limit of detection (LOD) of 0.5 µM. The LNB4:1AgNP composite allowed taking advantage of the unique properties of both components in a balanced manner, maximizing the sensor performance in practical applications. [ABSTRACT FROM AUTHOR]

Published
2024
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8. Non-Enzymatic Electrochemical Sensing of Glucose with a Carbon Black/Polyaniline/Silver Nanoparticle Composite.

Author

Piñón-Balderrama, Claudia Ivone, Hernández-Escobar, Claudia Alejandra, Reyes-López, Simón Yobanni, Conejo-Dávila, Alain Salvador, Estrada-Monje, Anayansi, and Zaragoza-Contreras, Erasto Armando

Subjects
GLUCOSE, CARBON-black, NANOPARTICLES, POLYANILINES, CARBON electrodes, OXIDATION of glucose, SILVER nanoparticles
Abstract

The present work describes the synthesis of an electroactive nanocomposite consisting of carbon black (CB) and polyaniline (PANI) obtained by in situ oxidative polymerization. Monomer P1 was used as a polyaniline precursor. P1 has surfactant properties that allow obtaining core–shell structures dispersed in an aqueous medium. The nanocomposite, together with silver nanoparticles (AgNPs) as an electrocatalytic element, was used to modify the surface of a glassy carbon electrode (GCE) for glucose detection. Electroactive areas were calculated using the Randles–Sevick equation. The results showed that the CB-PANI.1-1/AgNP nanocomposite exhibited a larger electroactive surface area (0.3451 cm2) compared to AgNP alone (0.0973 cm2) or the CB-PANI.1-1 composite (0.2989 cm2). Characterization of CB-PANI.1-1/AgNP, by cyclic voltammetry in the presence of glucose, showed a new oxidation peak with a maximum current close to 0.7 V due to the oxidation of glucose to gluconolactone. The amperometry test at 0.7 V showed a linear response with R2 of 0.999 as a function of the analyte concentration. The glucose sensor presented a linear detection range of 1 to 10 mM, a sensitivity of 41 µA mM−1 cm−2, and a limit of detection (LOD) of 520 µM. [ABSTRACT FROM AUTHOR]

Published
2024
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15. Silk Fibroin-g-Polyaniline Platform for the Design of Biocompatible-Electroactive Substrate

Author

Flores-Vela, Elsa Veronica, primary, Conejo-Dávila, Alain Salvador, additional, Hernández-Escobar, Claudia Alejandra, additional, Dominguez, Rocio Berenice, additional, Chávez-Flores, David, additional, Tapia-Lopez, Lillian V., additional, Piñon-Balderrama, Claudia, additional, Estrada-Monje, Anayansi, additional, Luna-Velasco, María Antonia, additional, Osuna, Velia Carolina, additional, and Zaragoza-Contreras, Erasto Armando, additional

Published
2022
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20. Synthesis of nanoparticles of the chitosan-poly((α,β)-DL-aspartic acid) polyelectrolite complex as hydrophilic drug carrier.

Author

Zegarra-Urquia, Carmen L., Santiago, Julio, Bumgardner, Joel D., Vega-Baudrit, José, Hernández-Escobar, Claudia A., and Zaragoza-Contreras, E. Armando

Subjects
CHITOSAN, NANOPARTICLE synthesis, DRUG carriers, POLYELECTROLYTES, BIOCOMPATIBILITY
Abstract

In this work, nanoparticles of the chitosan-poly((α,β)-DL-aspartic acid) polyelectrolyte complex (PEC) were synthesized. The purpose is to develop a biodegradable, biocompatible, and non-toxic polymeric platform as a vehicle for the encapsulation of hydrophilic drugs. The ionotropic gelation method, using solutions of chitosan and poly((α,β)-DL-aspartic acid sodium salt), allowed synthesizing particles with diameters of 142.1 ± 2.9 nm determined by DLS, while by FESEM particle diameters in the 60–200 nm range were observed. A preliminary trial showed that encapsulation of isoniazid, a hydrophilic drug to treat tuberculosis, is possible with encapsulation efficiency in the range of 5.3–5.8%. [ABSTRACT FROM AUTHOR]

Published
2023
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38. 15. Adolescents vs Adults; The Choice in Postpartum Contraception

Author

Apodaca-Ramos, Irasema, primary, Hernández-Escobar, Claudia E., additional, del Valle-Davila, Sergio A., additional, Campos-Barba, Efrain, additional, Apodaca-Ramos, Gilberto A., additional, Moncada-Madrazo, Mariana, additional, Hinojosa-Gonzalez, David E., additional, and Puerto-Ruiz, Marissa, additional

Published
2019
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42. Prevalence of high-grade perineal tear during labor in Mexican adolescents

Author

Sánchez-Ávila, María Teresa, primary, Galván-Caudillo, Marisol, additional, Cantú-Pompa, Jaime Javier, additional, Vázquez-Romero, Natalia, additional, Martínez-López, Jhanea Patricia, additional, Matías-Barrios, Víctor Manuel, additional, Avitia-Herrera, Abryl Mariana, additional, Morales-Garza, Luis Alonso, additional, Hernández-Escobar, Claudia Eugenia, additional, Soto-Fuenzalida, Gonzalo, additional, and González-Garza, María Teresa, additional

Published
2018
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49. Formação em ética e profissionalismo para as novas gerações de médicos

Author

Hernández-Escobar, Claudia, Hernández-Camarena, Julio, González-González, Luis, and Barquet-Muñoz, Salim

Subjects
Medical education, educación médica, ética, physicians, profesión, educação médica, médicos, ética médica, profissão, ethics, profession
Abstract

La profesión médica es un tipo específico de ocupación que da respuesta a los requerimientos económicos, políticos y sociales de la comunidad. Sin embargo, en el ámbito de las profesiones relacionadas con la salud, dicho concepto trasciende este entorno al entrar en juego la perspectiva ética en la que, idealmente, el profesional de la salud antepone los intereses de los demás a los propios. De esta manera, la profesión médica se convierte en una forma de vida regida por principios éticos y guiada por los más altos estándares de profesionalismo, constituyéndose en una vocación y no en una simple ocupación. Para devolver a la profesión médica su vocación distintiva, es esencial analizar las motivaciones intrínsecas y la ética de vida de las nuevas generaciones de médicos y, a partir de ahí, desarrollar -a manera de competencias- conocimientos, habilidades, actitudes y valores que propicien el desarrollo del profesionalismo, logrando finalmente una mejor relación médico-paciente, situando el bienestar de este último como principal interés. The medical profession is a specific kind of occupation that responds to the economic, political and social requirements of the community. Nevertheless, in the health care professions, that concept goes even further when the ethical perspective becomes involved. Ideally, health care professionals give priority to the needs of others-individually or collectively- and place their own needs second. In this way, medicine becomes in not just an occupation, but a vocation and a way of life ruled by ethical principles and guided by high professional standards. To restore medicine's distinctive vocation, it is essential to analyze the intrinsic motivations and life ethics of new generations of physicians and, on that basis, to begin to develop -in the manner of proficiencies- the knowledge, abilities, attitudes and values that enhance professionalism. In the end, this will provide for a better physician-patient relationship, by invariably giving priority to the patient's best interests. A profissão médica é uma ocupação específica que responde às demandas econômicas, políticas e sociais da comunidade. No entanto, no domínio das profissões relacionadas com a saúde, o conceito vai além deste ambiente, já que entra em jogo a perspectiva ética, na que -idealmente- o profissional de saúde põe os interesses dos outros acima dos seus próprios. Por tanto, esta profissão torna-se um modo de vida orientado por princípios éticos e guiado por altos padrões de profissionalismo. Conseqüentemente, é uma vocação e não uma simples ocupação. Se desejamos que a profissão retorne a sua vocação distinta, é essencial analisar as motivações intrínsecas e a ética de vida das novas gerações de médicos e, a partir daí, desenvolver conhecimento, habilidades, atitudes e valores -semelhantes a competências- conducentes ao desenvolvimento do profissionalismo para conseguir uma melhor relação médico-paciente cujo interesse primário seja o bem-estar de este último.

Published
2010

50. Formación en ética y profesionalismo para las nuevas generaciones de médicos

Author

Hernández Escobar, Claudia, Hernandez Camarena, Julio C., González González, Luis, Barquet Muñoz, Salim Abraham, Hernández Escobar, Claudia, Hernandez Camarena, Julio C., González González, Luis, and Barquet Muñoz, Salim Abraham

Abstract

The medical profession is a specific kind of occupation that responds to the economic, political and social requirements of the community. Nevertheless, in the health care professions, that concept goes even further when the ethical perspective becomes involved. Ideally, health care professionals give priority to the needs of others—individually or collectively— and place their own needs second. In this way, medicine becomes in not just an occupation, but a vocation and a way of life ruled by ethical principles and guided by high professional standards. To restore medicine’s distinctive vocation, it is essential to analyze the intrinsic motivations and life ethics of new generations of physicians and, on that basis, to begin to develop —in the manner of profi ciencies— the knowledge, abilities, attitudes and values that enhance professionalism. In the end, this will provide for a better physician-patient relationship, by invariably giving priority to the patient’s best interests., A profissão médica é uma ocupação específica que responde às demandas econômicas, políticas e sociais da comunidade. No entanto, no domínio das profissões relacionadas com a saúde, o conceito vai além deste ambiente, já que entra em jogo a perspectiva ética, na que –idealmente– o profissional de saúde põe os interesses dos outros acima dos seus próprios. Por tanto, esta profi ssão torna-se um modo de vida orientado por princípios éticos e guiado por altos padrões de profi ssionalismo. Conseqüentemente, é uma vocação e não uma simples ocupação. Se desejamos que a profissão retorne a sua vocação distinta, é essencial analisar as motivações intrínsecas e a ética de vida das novas gerações de médicos e, a partir daí, desenvolver conhecimento, habilidades, atitudes e valores –semelhantes a competências– conducentes ao desenvolvimento do profissionalismo para conseguir uma melhor relação médico-paciente cujo interesse primário seja o bem-estar de este último., DOI: 10.5294/pebi.2010.14.1.2 La profesión médica es un tipo específico de ocupación que da respuesta a los requerimientos económicos, políticos y sociales de la comunidad. Sin embargo, en el ámbito de las profesiones relacionadas con la salud, dicho concepto trasciende este entorno al entrar en juego la perspectiva ética en la que, idealmente, el profesional de la salud antepone los intereses de los demás a los propios. De esta manera, la profesión médica se convierte en una forma de vida regida por principios éticos y guiada por los más altos estándares de profesionalismo, constituyéndose en una vocación y no en una simple ocupación. Para devolver a la profesión médica su vocación distintiva, es esencial analizar las motivaciones intrínsecas y la ética de vida de las nuevas generaciones de médicos y, a partir de ahí, desarrollar —a manera de competencias— conocimientos, habilidades, actitudes y valores que propicien el desarrollo del profesionalismo, logrando fi nalmente una mejor relación médico-paciente, situando el bienestar de este último como principal interés. DOI: 10.5294/pebi.2010.14.1.2

Published
2010

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