852 research outputs found

    Lice and ticks parasitizing Audouin's Gull Larus audouinii Payraudeau, 7826 (Aves, Laridae) in the Chafarinas Islands (W Mediterranean)

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    Data on lice and ticks parasitizing gulls are scarce. Here data on 58 adult and 10 young Audouin's gulls from the Chafarinas lslands are provided. Three species of chewing lice Austromenopon transversum (prevalencelmean intensity: 20%-2), Koeniginirmus punctatus (100%-15.5). and Saemundssonia lari (10%-3.2) and one tick Ornithodoros maritimus (100%-18) were found. A. transversum, S. lari, and 0. maritimus are recorded for the first time for L. audouinii Key words: Chewing lice, Ticks, Larus audouinii.Data on lice and ticks parasitizing gulls are scarce. Here data on 58 adult and 10 young Audouin's gulls from the Chafarinas lslands are provided. Three species of chewing lice Austromenopon transversum (prevalencelmean intensity: 20%-2), Koeniginirmus punctatus (100%-15.5). and Saemundssonia lari (10%-3.2) and one tick Ornithodoros maritimus (100%-18) were found. A. transversum, S. lari, and 0. maritimus are recorded for the first time for L. audouinii Key words: Chewing lice, Ticks, Larus audouinii.Data on lice and ticks parasitizing gulls are scarce. Here data on 58 adult and 10 young Audouin's gulls from the Chafarinas lslands are provided. Three species of chewing lice Austromenopon transversum (prevalencelmean intensity: 20%-2), Koeniginirmus punctatus (100%-15.5). and Saemundssonia lari (10%-3.2) and one tick Ornithodoros maritimus (100%-18) were found. A. transversum, S. lari, and 0. maritimus are recorded for the first time for L. audouinii Key words: Chewing lice, Ticks, Larus audouinii

    Pyrite-induced uv-photocatalytic abiotic nitrogen fixation : implications for early atmospheres and Life

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    Acknowledgements This work has been supported by the MINECO project ESP2017- 89053. Te Instituto Nacional de Técnica Aeroespacial supported the work performed at CAB. Tomas and Celina Huttel Serrano are acknowledged for providing the pyrite samples. This Project has been partially funded by the Spanish State Research Agency (AEI) Project No. MDM-2017-0737 Unidad de Excelencia “María de Maeztu”- Centro de Astrobiología (INTA-CSIC).Peer reviewedPublisher PD

    Influence of environmental factors in the in vitro dehydration of hydrogel and silicone hydrogel contact lenses

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    Purpose: To analyze in vitro the influence of different environmental conditions on the dehydration pattern of seven currently marketed hydrogel (Hy) and silicone hydrogel (Si-Hy) contact lenses (CL). Methods: Three Hy and four Si-Hy CLs were evaluated. CLs were exposed to four different relative humidity (RH) conditions (5%, 30%, 50%, and 70%) and two air flow (AF) rates (0 and 2.75 m/seg) within an environmental chamber. Dehydration was assessed using the gravimetric method. Data were taken at baseline, 5, 10, 15, 20, 30, 45, 60, 90, and 120 minutes of exposure. Dehydration rate (DR), valid dehydration (VD) and stabilization time were calculated. Results: The interaction between RH, AF and the type of the CL material had a significant effect (p 0.03) on DR up to 60 minutes. The maximum differences in VD values among CL occurred around 15 minutes exposure varying from 25.16% to 42.75%. Stabilization time was quicker under the 5%RH with AF condition than under 70% RH without AF one for most CLs. Conclusions: Lower RH seems to increase CL dehydration being further accelerated with the AF presence. The dehydration pattern is material dependent, thus current marketed CLs behave differently under several controlled environmental conditions. Future in vivo studies should confirm these outcomes.The present study was partially supported by Junta Castilla y Leon (GR217 and VA145A11-2); by Junta de Castilla y Leon and European Social Fund (VA317-11); by Junta de Castilla y Leon and European Regional Development Fund (O22/12/VA/0112) and by Ministerio de Economia y Competitividad through Centro para el Desarrollo Tecnologico Industrial (IDI-2006-0676)

    Changes in salivary analytes in cows due to the in vitro presence of feed

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    The effect in a sialochemistry profile of the presence of usually available feed in dairy cows was evaluated by an in vitro experiment. For this purpose, a pooled clean saliva from five healthy dairy cows was incubated five times with a standard feed based on a total mixed ration (F), wheat hay (H), and grass (G). The salivary panel was integrated by biomarkers of stress (cortisol -sCor-, salivary alpha-amylase -sAA-, butyrylcholinesterase -BChE-, total esterase -TEA-, and lipase -Lip-), immunity (adenosine deaminase -ADA-), oxidative status (Trolox equivalent antioxidant capacity -TEAC-, the ferric reducing ability of saliva -FRAS-, the cupric reducing antioxidant capacity -CUPRAC-, uric acid, and advanced oxidation protein products -AOPP-), and enzymes, proteins, and minerals of general metabolism and markers of liver, muscle, and renal damage (aspartate aminotransferase -AST-, alanine aminotransferase -ALP-, γ-glutamyl transferase -gGT-, lactate dehydrogenase -LDH-, creatine kinase -CK-, creatinine, urea, triglycerides, glucose, lactate, total protein, phosphorus, and total calcium). Most of the evaluated analytes showed a coefficient of variations (CV) higher than 15% and/or significant changes compared with the clean saliva when feed was present. Some analytes, such as the oxidative status biomarkers (CV > 80%), AST (CV > 60%), or glucose (CV > 100%), showed significant changes with all the feed types tested. Others showed significant differences only with certain types of feed, such as LDH with F (CV > 60%) or triglycerides with F (CV > 100%) and H (CV > 95%). However, sCor or gGT remained unchanged (CV 0.05) in all the treatments. The presence of feed can produce changes in most of the analytes measured in cows' saliva, being of high importance to consider this factor when saliva is used as a sample to avoid errors in the interpretation of the results. The online version contains supplementary material available at 10.1186/s12917-022-03371-9

    Spatio-temporal analysis of the extent of an extreme heat event

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    Evidence of global warming induced from the increasing concentration of greenhouse gases in the atmosphere suggests more frequent warm days and heat waves. The concept of an extreme heat event (EHE), defined locally based on exceedance of a suitable local threshold, enables us to capture the notion of a period of persistent extremely high temperatures. Modeling for extreme heat events is customarily implemented using time series of temperatures collected at a set of locations. Since spatial dependence is anticipated in the occurrence of EHE’s, a joint model for the time series, incorporating spatial dependence is needed. Recent work by Schliep et al. (J R Stat Soc Ser A Stat Soc 184(3):1070–1092, 2021) develops a space-time model based on a point-referenced collection of temperature time series that enables the prediction of both the incidence and characteristics of EHE’s occurring at any location in a study region. The contribution here is to introduce a formal definition of the notion of the spatial extent of an extreme heat event and then to employ output from the Schliep et al. (J R Stat Soc Ser A Stat Soc 184(3):1070–1092, 2021) modeling work to illustrate the notion. For a specified region and a given day, the definition takes the form of a block average of indicator functions over the region. Our risk assessment examines extents for the Comunidad Autónoma de Aragón in northeastern Spain. We calculate daily, seasonal and decadal averages of the extents for two subregions in this comunidad. We generalize our definition to capture extents of persistence of extreme heat and make comparisons across decades to reveal evidence of increasing extent over time

    Clinical Evaluation of a New Approach for IOL Power Calculation in Keratoconus

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    Purpose: To obtain an expression of the adjusted IOL power (PIOLadj) in keratoconus eyes associated with minimal errors in IOL power calculation. Materials and methods: This retrospective study included a total of 25 eyes of 25 patients with ages ranging from 20 years to 76 years. The following IOLs were implanted: Acrysof IQ Toric, Acrysof SA60AT in 9 eyes, Sensar in 3 eyes, Tecnis 1 in 4 eyes, and Tecnis Toric in 2 eyes. The PIOLadj is based on Gauss equations, using adjusted keratometric index (nkadj) specific to keratoconus eyes. From this nkadj, an adjusted keratometric corneal power is calculated (Pkadj). The PIOLadj calculation was performed after estimating the effective lens position (ELP) using a mathematical expression obtained by multiple regression analysis (named ELPadj). Comparison between the PIOLadj and the real intraocular power implanted in each patient (PIOLreal) was carried out. Results: No significant differences between PIOLreal and PIOLadj were found. However, differences could be clinically relevant up to of 2.54 D as PIOLreal increases. But, in the range of PIOLreal between 0 and 20 D, differences were lower than 1.5 D, being most of them below 1 D. Conclusion: A new formula of IOL power calculation (PIOLadj) based on the use of an adjusted keratometric power (Pkadj) that considers a variable keratometric index due to the influence of the posterior corneal surface (nkadj) and adjusted effective lens position (ELPadj) is useful for estimating IOL power in low-to-moderate keratoconus, with more limitation in the most advanced keratoconus.David P Piñero is supported by the Spanish Ministry of Economy, Industry, and Competitiveness within the program Ramón y Cajal, RYC-2016-20471

    Évaluation de l'utilisation d'îles forestières par des espèces de perroquets dans une savane néotropicale

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    Understanding the effect of habitat fragmentation is a fundamental yet complicated aim of many ecological studies. Beni savanna is a naturally fragmented forest habitat, where forest islands exhibit variation in resources and threats. To understand how the availability of resources and threats affect the use of forest islands by parrots, we applied occupancy modeling to quantify use and detection probabilities for 12 parrot species on 60 forest islands. The presence of urucuri (Attalea phalerata) and macaw (Acrocomia aculeata) palms, the number of tree cavities on the islands, and the presence of selective logging,and fire were included as covariates associated with availability of resources and threats. The model-selection analysis indicated that both resources and threats variables explained the use of forest islands by parrots. For most species, the best models confirmed predictions. The number of cavities was positively associated with use of forest islands by 11 species. The area of the island and the presence of macaw palm showed a positive association with the probability of use by seven and five species, respectively, while selective logging and fire showed a negative association with five and six species, respectively. The Blue-throated Macaw (Ara glaucogularis), the critically endangered parrot species endemic to our study area, was the only species that showed a negative association with both threats. Monitoring continues to be essential to evaluate conservation and management actions of parrot populations. Understanding of how species are using this natural fragmented habitat will help determine which fragments should be preserved and which conservation actions are needed.La compréhension de l'effet de la fragmentation de l'habitat est l'objectif fondamental mais compliqué de nombreuses recherches en écologie. La savane de Beni est un milieu forestier naturellement fragmenté dans lequel les îles forestières diffèrent sur le plan des ressources et des menaces. Afin de comprendre à quel point la disponibilité des ressources et les menaces ont une influence sur l'utilisation d'îles forestières par les perroquets, nous avons appliqué des modèles de présence pour quantifier l'utilisation et la probabilité de détection de 12 espèces de perroquets sur 60 îles forestières. La présence de palmiers canne (Acrocomia aculeata) et de palmiers urucuri (Attalea phalerata), le nombre de cavités d'arbres sur les îles et la présence de coupes sélectives et de feu ont été inclus comme covariables associées à la disponibilité des ressources et aux menaces. L'analyse de la sélection de modèles a indiqué que les variables relatives aux ressources et celles relatives aux menaces expliquaient l'utilisation d'îles forestières par les perroquets. Pour la plupart des espèces de perroquets, les meilleurs modèles ont confirmé les prédictions. Le nombre de cavités était positivement associé avec l'utilisation d'îles forestières chez 11 espèces. La superficie de l'île et la présence de palmiers canne étaient positivement associées avec la probabilité d'utilisation chez 7 et 5 espèces, respectivement, tandis que la coupe sélective et le feu étaient négativement associés chez 5 et 6 espèces, respectivement. L'Ara canindé (Ara glaucogularis), espèce de perroquet en voie de disparition critique endémique à notre aire d'étude, a été la seule espèce qui a montré une association négative avec les deux menaces. Le suivi demeure essentiel pour l'évaluation des mesures de conservation et de gestion des populations de perroquets. La compréhension de l'utilisation de ce milieu naturellement fragmenté par les espèces contribuera à déterminer quelles parcelles devraient être protégées et quelles mesures de conservation sont nécessaires.Facultad de Ciencias Naturales y Muse

    Consultoría integral en una empresa de urbanización y construcción de instalaciones eléctricas en el municipio de Zapopan

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    Este documento titulado consultoría integral en una empresa de urbanización yconstrucción de instalaciones eléctricas en el municipio de Zapopan, fue elaborado por María Fernanda Bueno Medina, José Augusto Valadez Romero, Mateo Verea Dorantes, Erick Uriel Acevedo González y Oscar Eduardo Montesinos Borrayo, bajo la conducción de la profesora Laura Tiburcio Silver. La metodología utilizada para la elaboración del documento fue la de consultoría en MYPE. Las fuentes consultadas primarias fueron obtenidas directamente con los empresarios y colaboradores, así mismo, fuentes secundarias como bases de datos institucionales, etc. El documento está integrado por una introducción, metodología y cinco capítulos: descripción del proyecto, reflexiones de cierre, conclusiones, fuentes consultadas y anexos. Se concentró el trabajo plasmando las generalidades y contexto de la empresa con lo que se generó un diagnóstico de la situación, después se realizó un planteamiento estratégico con la finalidad de concretar una propuesta de mejora. Una vez generada la propuesta de mejora se comenzó con la implementación de las actividades en la consultoría, de tal manera se redactaron recomendaciones estratégicas a la empresa. Terminada la implementación y recomendaciones se realizaron reflexiones y conclusiones sobre los resultados. Al final se concluyó que, a pesar de tener un enfoque completamente distante a cada uno de los estudios universitarios de los involucrados, se logró en primera instancia comprender el funcionamiento de una empresa y por consiguiente implementar diferentes propuestas de mejora para lograr un beneficio medible en la empresa que recibió la consultoría.ITESO, A.C

    Evaluación del uso de teléfonos inteligentes y aplicaciones médicas en las carreras de medicina en el marco del proyecto SIMON

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    La tecnología de los teléfonos móviles inteligentes (Smartphones) se halla en continuo avance, siendo actualmente uno de los últimos eslabones de la cadena de innovaciones tecnológicas que pueden ser integrados en la educación médica. El “M-Learning” (tecnologías móviles para enseñar/formar) es usado como un recurso complementario para la interacción entre estudiantes y docentes en la motivación y aprendizaje. Los Smartphones permiten a los usuarios el acceso instantáneo a la información vía internet siendo cada vez mas importantes como herramienta para la salud. Las aplicaciones médicas (Medical Apps) son elementos de software descargables que cumplen un rol específico. El proyecto SIMON es un proyecto colaborativo entre docentes y alumnos de las facultades de medicina de la UNLP y UNCuyo cuya finalidad es obtener información sobre el uso de dispositivos móviles y aplicaciones médicas.Facultad de Ciencias Médica

    Proyecto Aula Médica Virtual (fase II): aulas de Dermatología y Gastroenterología

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    Las nuevas tecnologías de la información y comunicación ofrecen una poderosa herramienta para los educadores médicos. Un Aula Médica Virtual es un “aula sin paredes” donde un usuario puede acceder desde un sitio remoto a una serie de servicios tales como documentos electrónicos, imágenes, conferencias y material de aprendizaje adicional. El propósito del presente trabajo fue desarrollar un Aula Médica Virtual que permita complementar y facilitar la formación teórico-práctica de alumnos y la actualización de docentes y médicos en las áreas de la Dermatología y la Gastroenterología.Facultad de Ciencias Médica
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