111 research outputs found
Remotely sensed solutions for plant diversity conservation
Global change is happening at a staggering pace and the impact that change is having in the loss of plant biodiversity is unprecedented. The latest reports on the state of the world’s plants indicate that they face intensifying threats and biodiversity loss on a global scale. However, this rapid global change is also bringing extraordinary technological developments to all scientific fields. Earth Observation by Remote Sensing is undergoing a fast expansion and its capacity to monitor and analyse global environmental changes and their impact in biodiversity is ever growing.
This research analyses the current and potential role of Earth Observation in the conservation of plant diversity, identifying the latest technological developments with the greatest potential use in this field. Looking into a plant conservation organisation and through a series of case studies covering a range of spatial and temporal scales, this research brings the latest Remote Sensing technology to the plant conservation community. From collecting and processing very high resolution data for local conservation projects to help determine conservation status of a country’s unique ecosystem to tracking and reporting on global plant conservation targets this research demonstrates that Remote Sensing is instrumental for addressing the observation needs of the plant conservation community
Prediction of Satellite Shadowing in Smart Cities with Application to IoT
The combination of satellite direct reception and terrestrial 5G infrastructure is essential
to guarantee coverage in satellite based-Internet of Things, mainly in smart cities where buildings
can cause high power losses. In this paper, we propose an accurate and fast graphical method for
predicting the satellite coverage in urban areas and SatCom on-the-move scenarios. The aim is to
provide information that could be useful in the IoT network planning process, e.g., in the decision of
how many terrestrial repeaters are really needed and where they should be placed. Experiments show
that the shadowed areas predicted by the method correspond almost perfectly with experimental
data measured from an Eutelsat satellite in the urban area of Barcelona.Ministerio de Industria, Turismo y Comercio de España TSI-020301-2009-3
Factores psicosociales de protección y de riesgos asociados al incumplimiento de la norma en los jóvenes de décimo y undécimo de la Institución Educativa Alejandro Vélez Barrientos del Municipio de Envigado
Effect of the presence of the plant growth promoting rhizobacterium (PGPR) Chryseobacterium balustinum Aur9 and salt stress in the pattern of flavonoids exuded by soybean roots
In this work we studied how biotic and abiotic stresses can alter the pattern of flavonoids exuded by Osumi soybean roots. A routine method was developed for the detection and characterization of the flavonoids present in soybean root exudates using HPLC-MS/MS. Then, a systematic screening of the flavonoids exuded under biotic stress, the presence of a plant growth promoting rhizobacterium, and salt stress was carried out. Results obtained indicate that the presence of Chryseobacterium balustinum Aur9 or 50 mM NaCl changes qualitatively the pattern of flavonoids exuded when compared to control conditions. Thus, in the presence of C. balustinum Aur9, soybean roots did not exude quercetin and naringenin and, under salt stress, flavonoids daidzein and naringenin could not be detected. Soybean root exudates obtained under saline conditions showed a diminished capacity to induce the expression of the nodA gene in comparison to the exudates obtained in the absence of salt. Moreover, lipochitooligosaccharides (LCOs) were not detected or weakly detected when Sinorhizobium fredii SMH12 was grown in the exudates obtained under salt stress conditions or under salt stress in the presence of C. balustinum Au9, respectively.Fil: Dardanelli, Marta Susana. Universidad de Sevilla. Facultad de Farmacia; España. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Biología Molecular. Sección Química Biológica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Manyani, Hamid. Universidad de Sevilla. Facultad de Farmacia; EspañaFil: González Barroso, Sergio. Universidad de Sevilla. Facultad de Farmacia; EspañaFil: Rodríguez Carvajal, Miguel A.. Universidad de Sevilla. Facultad de Farmacia; EspañaFil: Gil Serrano, Antonio M.. Universidad de Sevilla. Facultad de Farmacia; EspañaFil: Espuny, Maria R.. Universidad de Sevilla. Facultad de Farmacia; EspañaFil: López Baena, Francisco Javier. Universidad de Sevilla. Facultad de Farmacia; EspañaFil: Bellogín, Ramon A.. Universidad de Sevilla. Facultad de Farmacia; EspañaFil: Megías, Manuel. Universidad de Sevilla. Facultad de Farmacia; EspañaFil: Ollero, Francisco J.. Universidad de Sevilla. Facultad de Farmacia; Españ
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Rapid forest inventory and mapping: Monitoring forest cover and land use change
This paper discusses the research tools used to create baseline data for carbon offset mechanisms. The paper explains vegetation survey methodologies with examples of their application in a variety of contexts. These range from rapid studies using remote sensing imagery, to full multiphase survey methods. The paper gives specific examples of how these methods are used to monitor deforestation and forest regeneration
Riesgos asociados a la utilización de antimicrobianos en personas mayores
Objetivos: Describir los cambios fisiológicos más relevantes asociados al envejecimiento, las características de las infecciones en estos pacientes así como los efectos adversos más frecuentes e interacciones farmacológicas graves de los antimicrobianos en los mayores.
Material y Métodos: Se realizó una revisión bibliográfica sobre los riesgos asociados al uso de antibióticos en ancianos. La información se apoyó en la actualización de la evidencia científica y la información de las Fichas Técnicas de los medicamentos. La búsqueda se limitó a los últimos 11 años, seleccionándose documentos publicados en español, inglés o francés. Se realizó una búsqueda electrónica de fuentes secundarias (revisiones sistemáticas) y una búsqueda manual “ad hoc”, partiendo de la bibliografía recuperada, estudios primarios, informes de agencias de evaluación de medicamentos, guías de práctica clínica y documentos de Sociedades Científicas. Se utilizaron como fuentes de información: Pubmed, Embase, Iowa Drug Information Service (IDIS), WinSPIRS 5.00, Up to Date, The Cochrane Library®.
Resultados: Se localizaron 321 resultados, tras eliminar los que no cumplían criterios de inclusión 52 documentos, además de las fichas técnicas de todos los antibióticos citados, se incluyeron en la revisión bibliográfica.
Conclusiones: Los pacientes mayores adquieren con mayor frecuencia infecciones por patógenos multi-resistentes y sufren más complicaciones graves de las infecciones. Los antibióticos son un grupo de fármacos especialmente sensibles a los cambios fisiológicos producidos por la edad, lo que puede condicionar la respuesta a los estos y exige en muchas ocasiones modificaciones posológicas con el fin de evitar intoxicaciones y/o fracasos terapéuticos. Este trabajo aporta información sobre estos cambios fisiológicos y los riesgos de los antibióticos en las personas mayores, aspectos necesarios para elegir un tratamiento adecuado.Aim: Describe the most important physiological changes associated with aging, the characteristics of infections in these patients and the most common side effects and severe interactions with antimicrobials in older people.
Material and methods: We conducted a literature review on the risks associated with the use of antibiotics in the elderly. The information was based on the update of the scientific evidence and information from the drug Sheets. The search was limited to the past 11 years, selected papers published in English, Spanish or French. We performed an electronic search of secondary sources (systematic reviews) and a manual search “ad hoc” basis of the literature retrieved, primary studies, reports of drug evaluation agencies, clinical practice guidelines and documents of Scientific Societies. Information sources: Pubmed, Embase, Iowa Drug Information Service (IDIS), WinSPIRS 5.00, Up to Date, The Cochrane Library®.
Results: We identified 321 results, after eliminating those who did not meet inclusion criteria 52 papers in addition to the technical specifications of all mentioned antibiotics were included in the literature review.
Conclusion: Older patients can acquire infections more frequently multi-resistant pathogens and suffer more serious complications of infections. The antibiotics is a group of drugs sensitive to the physiological changes induced by aging, which may influence the response to these and often requires dosage modifications to avoid poisoning and / or therapeutic failures. This paper provides information on these physiological changes and risks of antibiotics in the elderly, aspects necessary to choose a proper treatment.Este trabajo ha sido realizado con la co-
financiación de sendos proyectos de investigación:
FISS PI/10/01152 y Consejería de Salud de la
Junta de Andalucía PI-0160-2010
Risks associated with the use of antimicrobials in elderly
Objetivos: Describir los cambios fisiológicos más relevantes asociados al envejecimiento, las características de las infecciones en estos pacientes así como los efectos adversos más frecuentes e interacciones farmacológicas graves de los antimicrobianos en los mayores.Material y Métodos: Se realizó una revisión bibliográfica sobre los riesgos asociados al uso de antibióticos en ancianos. La información se apoyó en la actualización de la evidencia científica y la información de las Fichas Técnicas de los medicamentos. La búsqueda se limitó a los últimos 11 años, seleccionándose documentos publicados en español, inglés o francés. Se realizó una búsqueda electrónica de fuentes secundarias (revisiones sistemáticas) y una búsqueda manual “ad hoc”, partiendo de la bibliografía recuperada, estudios primarios, informes de agencias de evaluación de medicamentos, guías de práctica clínica y documentos de Sociedades Científicas. Se utilizaron como fuentes de información: Pubmed, Embase, Iowa Drug Information Service (IDIS), WinSPIRS 5.00, Up to Date, The Cochrane Library®.Resultados: Se localizaron 321 resultados, tras eliminar los que no cumplían criterios de inclusión 52 documentos, además de las fichas técnicas de todos los antibióticos citados, se incluyeron en la revisión bibliográfica.Conclusiones: Los pacientes mayores adquieren con mayor frecuencia infecciones por patógenos multi-resistentes y sufren más complicaciones graves de las infecciones. Los antibióticos son un grupo de fármacos especialmente sensibles a los cambios fisiológicos producidos por la edad, lo que puede condicionar la respuesta a los estos y exige en muchas ocasiones modificaciones posológicas con el fin de evitar intoxicaciones y/o fracasos terapéuticos. Este trabajo aporta información sobre estos cambios fisiológicos y los riesgos de los antibióticos en las personas mayores, aspectos necesarios para elegir un tratamiento adecuado.Aim: Describe the most important physiological changes associated with aging, the characteristics of infections in these patients and the most common side effects and severe interactions with antimicrobials in older people.Material and methods: We conducted a literature review on the risks associated with the use of antibiotics in the elderly. The information was based on the update of the scientific evidence and information from the drug Sheets. The search was limited to the past 11 years, selected papers published in English, Spanish or French. We performed an electronic search of secondary sources (systematic reviews) and a manual search “ad hoc” basis of the literature retrieved, primary studies, reports of drug evaluation agencies, clinical practice guidelines and documents of Scientific Societies. Information sources: Pubmed, Embase, Iowa Drug Information Service (IDIS), WinSPIRS 5.00, Up to Date, The Cochrane Library®.Results: We identified 321 results, after eliminating those who did not meet inclusion criteria 52 papers in addition to the technical specifications of all mentioned antibiotics were included in the literature review.Conclusion: Older patients can acquire infections more frequently multi-resistant pathogens and suffer more serious complications of infections. The antibiotics is a group of drugs sensitive to the physiological changes induced by aging, which may influence the response to these and often requires dosage modifications to avoid poisoning and / or therapeutic failures. This paper provides information on these physiological changes and risks of antibiotics in the elderly, aspects necessary to choose a proper treatment
Enfermedad de Erdheim-Chester. Serie de diecinueve casos y un diagnóstico diferencial de relevancia
La enfermedad de Erdheim-Chester (EEC) es una histiocitosis de células no Langerhans de presentación proteiforme y escaso conocimiento. Se presenta una serie de 19 casos de 4 centros, registrados de junio de 2012 a junio de 2019. Se incluyeron aquellos pacientes con clínica, anatomía patológica e inmunohistoquímica característica de la enfermedad. Se excluyeron pacientes con hallazgos indefinidos.
Resultados: al igual que en la literatura, el compromiso más frecuente fue el óseo por imagenología, la mitad de estos sintomático. Nuestra serie presenta mayor incidencia de mujeres (casi 70%). Siete pacientes presentaron nódulo mamario como forma de presentación. La mayoría recibieron dosis media de esteroides asociado a otra droga inmunosupresora. La mortalidad fue del 16%
Monitoring the complex benthic habitat on semi-dark underwater marine caves using photogrammetry-based 3D reconstructions
Marine caves are dark environments considered a priority habitat for conservation included
in the EU Habitats Directive (H8330). They harbor fragile benthic communities and
represent a major reservoir of marine biodiversity. However, there is a lack of knowledge of
these habitats due to the difficulties of creating detailed benthic maps and characterizing
the biodiversity, structure, and dynamics of their communities. The uniqueness of marine
caves fosters their popularity among recreational divers, who can cause disturbances
through abrasion of the biota, resuspension of sediment, and accumulation of exhaled air
bubbles in the caves' ceilings. This study aims to build a monitoring framework to
characterize the structure and temporal dynamics of this complex habitat using Structurefrom-
Motion (SfM) photogrammetry. SfM is a novel, non-invasive technique that allows a
major advancement in the monitoring of changes in the cave’s community assemblages. This
method relies on images acquired by 4K video footage to build fine-scaled 3D digital models
of the substrate using overlapping imagery. For this study, we combined SfM
photogrammetry and photo quadrats extracted from the video recordings. We evaluate the
effectiveness of this methodology in a marine cave highly frequented by divers, located in
Illa de l’Aire (Balearic Islands, Spain), and carried out two surveys before and after the
diving season (2019-2021). As a result, we found a loss of 25 colonies of bryozoans with
fragile skeletons, like Schizoretepora sp., and 8 individual sponges with globose
morphotypes. Our results indicate that this methodology enables accurate and efficient
monitoring of benthic communities in underwater caves that allow us to better understand
their dynamics and, therefore, to develop the need management measures
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