We review the concept of ecosystem resilience in its relation to ecosystem integrity from an info... more We review the concept of ecosystem resilience in its relation to ecosystem integrity from an information theory approach. We summarize the literature on the subject identifying three main narratives: ecosystem properties that enable them to be more resilient; ecosystem response to perturbations; and complexity. We also include original ideas with theoretical and quantitative developments with application examples. The main contribution is a new way to rethink resilience, that is mathematically formal and easy to evaluate heuristically in real-world applications: ecosystem antifragility. An ecosystem is antifragile if it benefits from environmental variability. Antifragility therefore goes beyond robustness or resilience because while resilient/robust systems are merely perturbation-resistant, antifragile structures not only withstand stress but also benefit from it.
Modelos de simulación para la elaboración y evaluación de los programas de servicios ambientales ... more Modelos de simulación para la elaboración y evaluación de los programas de servicios ambientales hídricos Resumen: Este trabajo propone un marco conceptual para mejorar el diseño y la evaluación del Programa de pago por servicio ambientales hidrológicos en México. Se basa en un enfoque sistémico para apoyar la formulación explícita de un modelo teórico de los procesos subyacentes a la prestación de los servicios ambientales hidrológicos, que son el foco de uno de los esquemas de pago que actualmente opera la Comisión Nacional Forestal. Palabras clave: funciones de los ecosistemas, modelado y toma de decisiones, predicción, escenarios, capital natural, pago por servicios ambientales, programas de cómputo
Journal of Veterinary Pharmacology and Therapeutics, 2001
In various parts of the world, many 10% enro¯oxacin commercial preparations for water medication ... more In various parts of the world, many 10% enro¯oxacin commercial preparations for water medication of chicken are being employed. To avoid the development of bacterial resistance to this agent, the original trademark and similar preparations must be bioequivalent. To assess whether or not bioequivalence exists among the pioneer vs. three commercial preparations of enro¯oxacin, a controlled pharmacokinetic study was conducted. The following variables were compared: maximal plasma concentration (C peak), time to C peak , bioavailability (expressed as the area under the concentration vs. time curve), elimination half-life, and the shapes of the respective time-serum concentrations of enrooxacin pro®les. Results indicate that all three similar commercial preparations had lower C peak values than the reference formulation, being 39.62 to 67.77% of the corresponding C peak reference. Additionally, bioavailability of enro¯oxacin in the pioneer product was statistically higher (P < 0.05). Based upon these results, we conclude that although all preparations were formulated as watersoluble products, bioequivalence studies are mandatory for the analogue formulations to ensure product comparability. Lack of product bioequivalence could facilitate the development of bacterial resistance and limit the useful life span of the product.
How to cite Complete issue More information about this article Journal's homepage in redalyc.org ... more How to cite Complete issue More information about this article Journal's homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative
The clinical and bacteriological efficacy, the quantity of mg and florfenicol treatment length fo... more The clinical and bacteriological efficacy, the quantity of mg and florfenicol treatment length for infectious bovine keratitis (Moraxella bovis) was assessed using either the parenteral administration of florfenicol (PF), or the ophthalmic administration of the drug in spray (OF). Sixty four cows and heifers were randomly divided into the two referred treatments. All animals were cured, however, the OF group required a mean of 378 mg/bovine and 12 days of treatment, while the PF group needed 22 800 mg/bovine (3.8 treatments per bovine) and 7.6 days. Although 100% efficacy was obtained in both groups cost-benefit ratio in the OF group is pondered
We review the concept of ecosystem resilience in its relation to ecosystem integrity from an info... more We review the concept of ecosystem resilience in its relation to ecosystem integrity from an information theory approach. We summarize the literature on the subject identifying three main narratives: ecosystem properties that enable them to be more resilient; ecosystem response to perturbations; and complexity. We also include original ideas with theoretical and quantitative developments with application examples. The main contribution is a new way to rethink resilience, that is mathematically formal and easy to evaluate heuristically in real-world applications: ecosystem antifragility. An ecosystem is antifragile if it benefits from environmental variability. Antifragility therefore goes beyond robustness or resilience because while resilient/robust systems are merely perturbation-resistant, antifragile structures not only withstand stress but also benefit from it.
Modelos de simulación para la elaboración y evaluación de los programas de servicios ambientales ... more Modelos de simulación para la elaboración y evaluación de los programas de servicios ambientales hídricos Resumen: Este trabajo propone un marco conceptual para mejorar el diseño y la evaluación del Programa de pago por servicio ambientales hidrológicos en México. Se basa en un enfoque sistémico para apoyar la formulación explícita de un modelo teórico de los procesos subyacentes a la prestación de los servicios ambientales hidrológicos, que son el foco de uno de los esquemas de pago que actualmente opera la Comisión Nacional Forestal. Palabras clave: funciones de los ecosistemas, modelado y toma de decisiones, predicción, escenarios, capital natural, pago por servicios ambientales, programas de cómputo
Journal of Veterinary Pharmacology and Therapeutics, 2001
In various parts of the world, many 10% enro¯oxacin commercial preparations for water medication ... more In various parts of the world, many 10% enro¯oxacin commercial preparations for water medication of chicken are being employed. To avoid the development of bacterial resistance to this agent, the original trademark and similar preparations must be bioequivalent. To assess whether or not bioequivalence exists among the pioneer vs. three commercial preparations of enro¯oxacin, a controlled pharmacokinetic study was conducted. The following variables were compared: maximal plasma concentration (C peak), time to C peak , bioavailability (expressed as the area under the concentration vs. time curve), elimination half-life, and the shapes of the respective time-serum concentrations of enrooxacin pro®les. Results indicate that all three similar commercial preparations had lower C peak values than the reference formulation, being 39.62 to 67.77% of the corresponding C peak reference. Additionally, bioavailability of enro¯oxacin in the pioneer product was statistically higher (P < 0.05). Based upon these results, we conclude that although all preparations were formulated as watersoluble products, bioequivalence studies are mandatory for the analogue formulations to ensure product comparability. Lack of product bioequivalence could facilitate the development of bacterial resistance and limit the useful life span of the product.
How to cite Complete issue More information about this article Journal's homepage in redalyc.org ... more How to cite Complete issue More information about this article Journal's homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative
The clinical and bacteriological efficacy, the quantity of mg and florfenicol treatment length fo... more The clinical and bacteriological efficacy, the quantity of mg and florfenicol treatment length for infectious bovine keratitis (Moraxella bovis) was assessed using either the parenteral administration of florfenicol (PF), or the ophthalmic administration of the drug in spray (OF). Sixty four cows and heifers were randomly divided into the two referred treatments. All animals were cured, however, the OF group required a mean of 378 mg/bovine and 12 days of treatment, while the PF group needed 22 800 mg/bovine (3.8 treatments per bovine) and 7.6 days. Although 100% efficacy was obtained in both groups cost-benefit ratio in the OF group is pondered
Uploads
Papers by Miguel Zamora