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Sample records for alba doctorado curricular

  1. LA TUTORÍA EN PROGRAMAS DE DOCTORADO. TENSIONES TUTORIALES DOCTORADO EN CIENCIAS DE LA EDUCACIÓN RUDECOLOMBIA

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    Mario Gabriel Torres Calixto

    2011-01-01

    Full Text Available El objeto del trabajo es el de analizar las tensiones existentes en el desarrollo de la tutoría del Doctorado en Ciencias de la Educación de RUDECOLOMBIA, dentro del contexto de las tutorías internacionales, con la pregunta ¿Inciden las tensiones de la tutoría en la calidad del trabajo y formación integral del doctorando?. El método se centra desde la historia de la educación que permitió establecer el modelo para analizar el objeto de estudio como es la tutoría en un programa de doctorado. La metodología cualitativa junto con la comparativa, nos proporcionó los procedimientos, clasificación y organización de la información, que permitieron comprender el lugar que ha ocupado la tutoría en la formación de los doctores en RUDECOLOMBIA, desde la revisión de literatura nacional e internacional, las contextualiza dentro del concepto de globalización y plantea alternativas de solución. Las estrategias se centraron en la información de los talleres realizados en Comité Curricular y en las 61 entrevistas realizadas y el archivo de RUDECOLOMBIA. Los resultados permitieron identificar, que si bien existen normas sobre la tutoría en los doctorados, aún se identifican situaciones en las cuales, la decisión a tomar, depende de la autonomía del tutor. Esto genera tensiones, puesto que pueden existir argumentos a favor o en contra de dicha decisión, lo cual incide en la calidad de la formación doctoral. Se socializan algunas recomendaciones para implementar la normatividad y facilitar la toma de decisiones en relación con los dilemas y tensiones que surjan en el proceso de formación del graduado.

  2. La investigación y el doctorado

    OpenAIRE

    Gilli, Juan José

    2011-01-01

    La investigación y los estudios de doctorado se encuentran estrechamente vinculados porque tienen el propósito común de crear nuevo conocimiento. En este marco se inserta el nuevo Doctorado en Ciencias de la Gestión que ofrece la Facultad de Ciencias Económicas. (Párrafo extraído del texto a modo de resumen)

  3. [Curricular reform].

    Science.gov (United States)

    Fraga Filho, C; Rosa, A R

    1980-01-01

    Advocating the thesis that the planning of medical education must be oriented toward the articulastion of instruction with care, the authors note that the curricular reforms of the last 25 years, though reflected in the teaching-learning process, have led to no improvement in medical practice or in the health of the population. This failing, they assert, stems from the fact that these reforms begin and end within the educational institution itself, and ignore the interrelations between the education system and the user of the professional, and results in the production of physicians who are individualistic and of narrow vision. The article refers to the slight importance attached to the complementarity and interdependence of teaching and care work, and to the restriction of teaching to episodic contacts between specialized professors and groups of anonymous students, each in the limited confines of his own discipline, and the relegation of the student to the status of spectator and possible assistant in care work entrusted to him without any responsibility. PMID:7398573

  4. LOS DOCTORADOS EN COLOMBIA. Un camino hacia la transformación universitaria

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    Diana Elvira Soto Arango

    2009-01-01

    Full Text Available Los doctorados en Colombia, con el carácter de desarrollar investigación, son de reciente creación de finales del siglo XX. Estos se originan por el cambio en la concepción de la universidad y por la globalización del conocimiento. En Colombia, los doctorados presentan una exuberante legislación en el siglo XXI que está aislada de una realidad educativa que no logra transformarse y concretar políticas y mecanismos que impulsen la formación doctoral. Por su parte, los doctorados en educación, se crean con la peculiaridad organizativa de Redes académicas. En el caso de RUDECOLOMBIA, desde la construcción de la identidad de la Red, se proyecta con objetivos de desarrollo regional educativo y con proyectos de construcción de nación.

  5. Pityriasis versicolor alba.

    Science.gov (United States)

    Thoma, W; Krämer, H-J; Mayser, P

    2005-03-01

    Pityriasis versicolor alba is a hypopigmented or depigmented variant of pityriasis versicolor characterized by maculous, partly pityriasiform, scaly depigmented lesions occurring particularly in seborrhoeic areas. Long-persisting hypopigmentation after healing of the pityriasis versicolor was first described by Gudden in 1853. Hypopigmentation and depigmentation were later differentiated as an independent variant of the disease. In 1848, Eichstedt recognized the pathogen-related character of pityriasis versicolor in its hyperpigmented form. Today it is generally accepted that the disease is caused by yeasts of the genus Malassezia, of which nine species are differentiated. It is controversial whether a single species is responsible for the disease. The pathogenesis of depigmentation has not been established. A screening effect by the scale layer as well as toxic effects on pigment synthesis by fungal metabolites have been discussed. With regard to the second mechanism, the newly discovered tryptophan-derived metabolites of M. furfur might be significant. Evidence-based data concerning the therapy of pityriasis versicolor alba do not exist. According to current recommendations, pityriasis versicolor should be rapidly treated with antimycotics, followed by ultraviolet therapy to induce maturation of existent melanosomes and accelerate repigmentation. However, depigmented lesions are difficult to improve by ultraviolet therapy.

  6. Interactions of archaeal chromatin proteins Alba1 and Alba2 with nucleic acids.

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    Miha Črnigoj

    Full Text Available BACKGROUND: Architectural proteins have important roles in compacting and organising chromosomal DNA. There are two potential histone counterpart peptide sequences (Alba1 and Alba2 in the Aeropyrum pernix genome (APE1832.1 and APE1823. METHODOLOGY/PRINCIPAL FINDINGS: THESE TWO PEPTIDES WERE EXPRESSED AND THEIR INTERACTIONS WITH VARIOUS DNAS WERE STUDIED USING A COMBINATION OF VARIOUS EXPERIMENTAL TECHNIQUES: surface plasmon resonance, UV spectrophotometry, circular dichroism-spectropolarimetry, gel-shift assays, and isothermal titration calorimetry. CONCLUSIONS/SIGNIFICANCE: Our data indicate that there are significant differences in the properties of the Alba1 and Alba2 proteins. Both of these Alba proteins can thermally stabilise DNA polynucleotides, as seen from UV melting curves. Alba2 and equimolar mixtures of Alba1/Alba2 have greater effects on the thermal stability of poly(dA-dT.poly(dA-dT. Surface plasmon resonance sensorgrams for binding of Alba1, Alba2, and equimolar mixtures of Alba1/Alba2 to DNA oligonucleotides show different binding patterns. Circular dichroism indicates that Alba2 has a less-ordered secondary structure than Alba1. The secondary structures of the Alba proteins are not significantly influenced by DNA binding, even at high temperatures. Based on these data, we conclude that Alba1, Alba2, and equimolar mixtures of Alba1/Alba2 show different properties in their binding to various DNAs.

  7. Desarrollo del programa de Doctorado en Ingeniería en la Universidad de los Andes

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    2009-05-01

    Full Text Available La Memoria, que la Revista de Ingeniería presenta en este número, recuenta el proceso de constitución del programa de doctorado en la Facultad de Ingeniería de la Universidad de los Andes, el cual cumple en 2009 una década de formación de profesionales a nivel doctoral.

  8. Curricular Mapping: Process and Product

    OpenAIRE

    Kelley, Katherine A.; McAuley, James W.; Wallace, Lane J.; Frank, Sylvan G.

    2008-01-01

    Curricular maps can be used to link ability-based outcomes (ABOs) and content to courses in PharmD curricula as one component of an overall assessment plan. Curricular maps can also be used to meet some of the requirements delineated by Accreditation Council for Pharmacy Education, Standards 2007. Five steps can be followed to help ensure the successful production of a curricular map that both meets accreditation requirements and helps to inform curricular improvements. A case study is presen...

  9. SÍNDROME DE BURNOUT EN ALUMNOS DE LOS DOCTORADOS EN EDUCACIÓN DE DURANGO (MÉXICO

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    Arturo Barraza Macías

    2012-01-01

    Full Text Available Los objetivos de la presente investigación fueron: identificar el perfil descriptivo del síndrome de burnout y establecer la relación que existe entre dicho síndrome y las variables sociodemográficas (género, edad, relación de pareja y número de hijos y situacionales (doctorado que cursa estudiadas. Para el logro de tales objetivos, se realizó una investigación correlacional, transversal y no experimental a través de la aplicación de la Escala Unidimensional de Burnout Estudiantil a los alumnos de los dos doctorados en educación que existen en la ciudad de Durango. En total, se aplicaron 19 cuestionarios y sus resultados permiten afirmar que existe un nivel leve de burnout en los alumnos encuestados y que el doctorado que cursan establece una diferencia significativa en ese nivel.

  10. Major Martian Volcanoes from MOLA - Alba Patera

    Science.gov (United States)

    2000-01-01

    Two views of Alba Patera with topography draped over a Viking image mosaic. MOLA data have clarified the relationship between fault location and topography on and surrounding the Alba construct, providing insight into the volcanological and geophysical processes that shaped the edifice. The vertical exaggeration is 10:1.

  11. Modelo teórico - metodológico para los procesos curriculares en la Licenciatura en Economía

    OpenAIRE

    Caridad Alonso Camaraza

    2010-01-01

    En este trabajo se presenta una propuesta de modelo teórico-metodológico para la Licenciatura en Economía. Este modelo, de carácter curricular, es el resultado científico al que se arriba en un proceso investigativo desarrollado como parte de los estudios de doctorado en Ciencias Pedagógicas. El modelo que se propone posee tiene en cuenta el modelo nacional de formación profesional en la Educación Superior de Cuba. Posee una estructura q...

  12. Actividad antibacteriana de Lippia alba

    OpenAIRE

    Nogueira, Marisa A.; Díaz, Gaspar; Sakumo, Luciana; Tagami, Patrícia M.

    2007-01-01

    Lippia alba (Mill.) N. E. Brown. (Verbenaceae) es una especie ampliamente utilizada en la medicina popular en Brasil como digestivo y antiséptico. La caracterización preliminar de los aceites esenciales obtenidos de las partes aéreas de la planta fue realizada por CG/EM. Con estos aceites esenciales se llevaron a cabo los análisis de la actividad antibacteriana. Los resultados encontrados mostraron una amplia actividad antibacteriana, confirmando así el uso de esta planta en la me...

  13. Concepción y estructuras diferentes del doctorado para formar investigadores.

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    Edmundo Resenos Díaz

    2013-11-01

    Full Text Available El Programa de Doctorado en Ciencias, con especialidad en ciencias administrativas, de la Escuela Superior de Comercio y Administración del Instituto Politécnico Nacional (IPN hasta 1995 era de tipo escolarizado, por asignaturas. El tiempo promedio que consumían los alumnos para concluir el  programa y graduarse era de 11 años. En ese año, el IPN autorizó, de manera oficial, establecer el programa reestructurado, nuevo para nuestro ambiente en esa época. Los objetivos principales del programa fueron: a formar investigadores, b incrementar la eficiencia terminal. Los supuestos, hipótesis y estrategias principales que sustentaban la propuesta fueron:   - El grado de Doctor en Ciencias es el nivel más elevado de educación formal que existe en el sistema de educación nacional y del mundo.   - Los aspirantes que ingresan al programa ya son autodidactas, al menos, saben estudiar por cuenta propia, ostentan un grado de maestría, por lo tanto, pueden adquirir por sí mismos todos los conocimientos, los que les falten o necesiten para culminar su formación.   - Los investigadores se forman haciendo investigación, no asistiendo al aula a escuchar profesores doctos que les trasmiten sus conocimientos y experiencias.   - La práctica hace al investigador, no los ejercicios y prácticas escolares diseñadas por la experiencia de diversos profesores, que simulan en aula escenarios de la realidad a investigar.   - El desarrollo de competencias y aptitudes del Doctor en ciencias.   - La calidad se logra con la interdisciplinaridad e interinstitucionalidad nacional.   Los resultados principales han sido: a graduar investigadores con grado de Doctor en Ciencias en un tiempo promedio de 4 años; b el incremento de eficiencia terminal ha sido del 275%, de julio de 1995 a agosto de 2003 se han graduado 46 doctores. Esta autoevaluación del programa de doctorado proporciona evidencias de la contribución a la generación de un nuevo paradigma de

  14. SÍNDROME DE BURNOUT EN ALUMNOS DE DOCTORADO EN EDUCACIÓN DE LA CIUDAD DE DURANGO

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    Arturo Barraza Macías

    2013-01-01

    Full Text Available Los objetivos de la presente investigación fueron identificar el perfil descriptivo del síndrome de burnout y establecer la relación que existe entre dicho síndrome y las variables sociodemográficas y situacionales estudiadas. Para el logro de tales propósitos, se realizó una investigación correlacional, transversal y no experimental a través de la aplicación de la Escala Unidimensional de Burnout Estudiantil a los alumnos de los dos doctorados en educación que existen en la ciudad de Durango, México. Los resultados permiten afirmar que existe un nivel leve de burnout en los alumnos encuestados y que el doctorado que cursan establece una diferencia significativa en ese nivel.

  15. Gastroprotective effect of leaf extracts of Basella alba var. alba against experimental gastric ulcers in rats

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    Vijender Kumar

    2012-06-01

    Full Text Available The aqueous and ethanol extracts of the leaves of Basella alba L. var. alba Wight, Basellaceae, were investigated for antiulcer activity on rats employing the pylorus ligation and ethanol induced ulcer models. The various gastric secretion parameters such as total acidity, free acidity, gastric acid volume, pH and histopathological parameters such as ulcer index and percent protection were comparatively examined between control, test and standard groups. The antiulcer activity of aqueous extract of B. alba (AEBA and ethanol extract of B. alba (EEBA were studied in rats treated with the doses of 1 mL/kg of absolute ethanol, 200 and 400 mg of test extracts and 20 mg/kg of famotidine for control, test and standard groups respectively in both the models. The animals pretreated with AEBA and EEBA showed a dose-dependent protection against gross damaging action of ethanol and pylorus ligation on gastric mucosa of animals. Histopathological evaluation also revealed that Group I treated with absolute ethanol showed severe gastric mucosal damage. The AEBA and EEBA showed 68.25 and 58.11% protection in gastric mucosal damage as compared to control group. Both the extracts of B. alba var. alba were able to decrease the gastric acidity and increase the mucosal defense in the gastric mucosal area. This study indicate that B. alba var. alba possesses significant gastroprotective effect and the same is substantiated by the histopathological examination of the ulcerated stomachs of the animals.

  16. SÍNDROME DE BURNOUT EN ALUMNOS DE LOS DOCTORADOS EN EDUCACIÓN DE DURANGO (MÉXICO)

    OpenAIRE

    Arturo Barraza Macías; Flavio Ortega Muñoz; Manuel Ortega Muñoz

    2012-01-01

    Los objetivos de la presente investigación fueron: identificar el perfil descriptivo del síndrome de burnout y establecer la relación que existe entre dicho síndrome y las variables sociodemográficas (género, edad, relación de pareja y número de hijos) y situacionales (doctorado que cursa) estudiadas. Para el logro de tales objetivos, se realizó una investigación correlacional, transversal y no experimental a través de la aplicación de la Escala Unidimensional de Burnout Estudiantil a los alu...

  17. SÍNDROME DE BURNOUT EN ALUMNOS DE DOCTORADO EN EDUCACIÓN DE LA CIUDAD DE DURANGO

    OpenAIRE

    Arturo Barraza Macías; Flavio Ortega Muñoz; Manuel Ortega Muñoz

    2013-01-01

    Los objetivos de la presente investigación fueron identificar el perfil descriptivo del síndrome de burnout y establecer la relación que existe entre dicho síndrome y las variables sociodemográficas y situacionales estudiadas. Para el logro de tales propósitos, se realizó una investigación correlacional, transversal y no experimental a través de la aplicación de la Escala Unidimensional de Burnout Estudiantil a los alumnos de los dos doctorados en educación que existen en la ciudad de Durango...

  18. Antioxidant Effect of Lippia alba (Miller) N. E. Brown

    OpenAIRE

    Chies, Claire E.; Cátia S. Branco; Gustavo Scola; Fabiana Agostini; Gower, Adriana E.; Mirian Salvador

    2013-01-01

    Lippia alba is a shrub found in all regions of Brazil and other countries in South and Central America. L. alba exhibits variability among its different accessions, showing differences in morphology and in the composition of its essential oil. This study evaluated the phenolic profiles and the antioxidant activities of seven different accessions of L. alba. The seven accessions of L. alba studied exhibited an important phenolic content, and all accessions demonstrated antioxidant activity wit...

  19. Historia de las Prácticas Curriculares en los procesos de formación de licenciados: 1973-1998

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    Reynaldo Mora Mora

    2015-10-01

    Full Text Available Se presenta un resumen del trabajo final de tesis de doctorado en ciencias de la educación, titulada “Historia de las Prácticas Curriculares en los procesos de formación de licenciados en ciencias sociales: 1973-1998”. En esta investigación se da a conocer cómo se formaron licenciados y qué tipo de prácticas curriculares fueron puestas en escena por parte de las instituciones educativas del estudio. AbstractAn abstract of the of the final work of the doctoral thesis on Sciences of Education is presented under the title “A History of the Curricular Practices in the Process of Formation of Education Graduates in Social Sciences: 1973-1998”. In this research it is announced how the Education Graduates were educated and what sort of curricular practices were staged by the educational institutions studied.

  20. Curricular Models for Culturally Disadvantaged

    Science.gov (United States)

    King, Clement T.

    1976-01-01

    Two psychological theories which seem to have had a great impact on compensatory education programs are Skinnerian reinforcement theory and the cognitive developmental theory derived in part from Jean Piaget. The Englemann-Becker program is a typical example of the Programmed Curricular kind of program; the Florida Project, an Open Framework; and…

  1. IN-VITRO ANTI-INFLAMMATORY ACTIVITY OF LEAF EXTRACTS OF BASELLA ALBA LINN. VAR. ALBA

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    Vijender Kumar

    2011-06-01

    Full Text Available The leaf extracts of Basella alba Linn.var. alba were investigated for In-vitro anti-inflammatory activity by human red blood cell membrane stabilization method (HRBC. The increased use of natural product in the pharmaceutical industry has led to an increase in demand for screening for cost effective, nontoxic bioactive compounds in medicinal plants. Now a day’s many researchers interest is to search medicinal plants with potent therapeutic activity which may lead to the discovery of new therapeutic agent. In this work the methanolic extract of Basella alba (M.E.B.A. and aqueous extract of Basella alba (A.E.B.A. were studied for its in-vitro antiinflammatory activities. The potency of the extracts was compared with standard Diclofenac sodium (50 and 100 @g/ml. The aqueous extract showed the most significant membrane stabilizing action on human red blood cell membrane.

  2. IN-VITRO ANTI-INFLAMMATORY ACTIVITY OF LEAF EXTRACTS OF BASELLA ALBA LINN. VAR. ALBA

    OpenAIRE

    Vijender Kumar; Z. A. Bhat; Dinesh Kumar; Puja Bohra; S. Sheela

    2011-01-01

    The leaf extracts of Basella alba Linn.var. alba were investigated for In-vitro anti-inflammatory activity by human red blood cell membrane stabilization method (HRBC). The increased use of natural product in the pharmaceutical industry has led to an increase in demand for screening for cost effective, nontoxic bioactive compounds in medicinal plants. Now a day’s many researchers interest is to search medicinal plants with potent therapeutic activity which may lead to the discovery of new the...

  3. Gastroprotective effect of leaf extracts of Basella alba var. alba against experimental gastric ulcers in rats

    OpenAIRE

    Vijender Kumar; Z. A. Bhat; Dinesh Kumar; N A Khan; I. A. Chashoo; Irfat Ara

    2012-01-01

    The aqueous and ethanol extracts of the leaves of Basella alba L. var. alba Wight, Basellaceae, were investigated for antiulcer activity on rats employing the pylorus ligation and ethanol induced ulcer models. The various gastric secretion parameters such as total acidity, free acidity, gastric acid volume, pH and histopathological parameters such as ulcer index and percent protection were comparatively examined between control, test and standard groups. The antiulcer activity of aqueous extr...

  4. Habitus y capital cultural de los alumnos de Doctorado en Pedagogía de la Facultad de Estudios Superiores Aragón. UNAM (1999-2003) /

    OpenAIRE

    Torres Campos, Eduwiges sustentante.

    2009-01-01

     tesis que para obtener el grado de Doctor en Pedagogía, presenta Eduwiges Torres Campos ; asesor Antonio Carrillo Avelar. iv, 294 páginas : ilustraciones. Doctorado en Pedagogía UNAM, Facultad de Estudios Superiores Aragón, 2009

  5. Doctorado chileno en bibliotecología: Necesidad nacional Chilean Ph. D. in Library Science: a National Necessity

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    Ariel Rementería Piñones

    2008-04-01

    Full Text Available Se hace una reflexión sobre la implementación en Chile de un programa de doctorado en bibliotecología, se analiza la ley LOCE y su relación con los posgrados, y con el proceso de acreditación, se hace un breve análisis de los programas de magísteres ofrecidos en Chile en bibliotecología y su relación con la situación bibliotecaria del país. Se exponen los motivos que justificarían el desarrollo de un programa de doctorado de bibliotecología en Chile con base en los precarios resultados de los indicadores relacionados con la cantidad de recursos humanos altamente calificados en el área. Se concluye que existe la necesidad de aumentar la masa crítica de investigadores en la bibliotecología chilena a través de un programa doctoral.The implementation in Chile of a Ph. D. in Library Science is reflected upon and the Organic Constitutional Teaching Law (LOCE analysed in relation to postgraduate education. The master programs offered in Chile in Library Science are briefly outlined. The reasons which justify the development of the doctoral program are discussed in the light of the poor results suggested by indicators on the number of highly qualified human resources in the area. The need to increase the critical number of researchers in Chilean Library Science through a masters degree, is concluded.

  6. Geomorphology and stratigraphy of Alba Patera, Mars

    Science.gov (United States)

    Schneeberger, Dale M.; Pieri, David C.

    1991-01-01

    Geomorphic and stratigraphic analysis of Alba Patera suggests a volcanic construct built by lavas with rheologic properties similar to basalts. A series of evolving eruptive styles is suggested by changes in morphology and inferred progressive reductions in flow volume with higher stratigraphic position. Alba Patera's volcanic history has been summarized into four main phases. The first is characterized by extensive flood like flows presumably erupted from fissures associated with the initial intrusion of magma into the region. The second phase is associated with the emplacement of pyroclastic rock, a more speculative interpretation. The third phase produced the voluminous tabular, crested, and undifferentiated flows, probably from a more centralized vent source. The fourth and last phase is marked the effusion of levee like flows and the collapse of the summit calderas and final graben formation.

  7. Números: simplicidad conceptual, complejidad curricular

    OpenAIRE

    Rico, Luis

    1996-01-01

    ¿De quién es el conocimiento sobre el número?, ¿quién determina su tratamiento curricular? Cuestiones similares han sido propuestas recientemente por Michael Apple (¿De quién es el conocimiento que más valor tiene?, ¿de quién es este curriculo?), y se plantean en toda su crudeza cuando, como en la actualidad, se trabaja sobre modificaciones importantes del currículo. En tales momentos nos vemos obligados a interrogarnos por la finalidad de la formación escolar, por la idoneidad de determinado...

  8. Production rate of Morus Alba pollen grains in an abandoned M. Alba plantation

    OpenAIRE

    Kiyonaga, Jota

    2016-01-01

    As a basic study for pollen analysis, the production rate of Morus alba (white mulberry) pollen grains in an abandoned M. alba plantation was determined over a three-year period from 1997 to 1999. The number of pollen grains per male catkin was assessed and the fall rate of male catkins was measured using five litter traps. The mean production rate was 2.6 × 10^ grains ha^yr^ (range = 2.2-3.4 × 10^ grains ha^yr^). This is near the lower end of the range of pollen production rates that have be...

  9. Programas de doctorado en Ingeniería para la innovación: una propuesta de política pública para el sector industrial en Colombia

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    Jorge Enrique Celis Giraldo

    2013-12-01

    Full Text Available Aumentar el número de graduados de programas de doctorado en la industria colombiana, se ha definido como uno de los mecanismos para fortalecer las capacidades deinnovación de dicho sector. Un estudio realizado en Colombia demostró que la mayoría de los estudiantes de doctorado en ingeniería prefiere la academia como destino laboral.Dicho estudio encontró también que los programas de doctorado de corte industrial influyen en las expectativas de los estudiantes para que opten por la industria. Este artículo describe los aspectos que se consideran relevantes para transformar los doctorados de corte académico, en otros, que promuevan la innovación.

  10. In vitro regeneration of Basella alba L

    Science.gov (United States)

    Edney, Norris Allen; Rizvi, Muhammad A.; Rizvi, Narjis F.

    1989-01-01

    Basella alba L. is a tropical vine used as a vegetable in some Asian and African countries. It has potential as a nontraditional crop for small family farms. A short day plant, it blooms during the fall, provided the temperatures are mild. In the southeastern U.S., the short days of fall are associated with subfreezing temperatures, and plants are killed before blooming. Attempts were made to regenerate the plant using tissue culture techniques. Several trials were conducted with different media, hormones, and explants. It was found that nodal segments on Gamborg medium regenerated shoots. Interaction studies of auxins and cytokinins indicated that its endogeneous auxin content might be high because callus proliferated in almost all treatments and roots initiated even when the medium was not supplemented with an auxin.

  11. Teelt Nerine flexuosa alba minder moeilijk dan aangenomen

    NARCIS (Netherlands)

    Brenk, van G.

    1985-01-01

    De bloei van Nerine flexuosa alba wordt voornamelijk beinvloed door de temperatuur. Per groei- en bloeicyclus vraagt deze Nerine eerst een lage temperatuur voor aanleg en ontwikkeling van de bloeiknoppen en daarna voor de bloei een hoge temperatuur

  12. Antioxidant Effect of Lippia alba (Miller N. E. Brown

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    Claire E. Chies

    2013-09-01

    Full Text Available Lippia alba is a shrub found in all regions of Brazil and other countries in South and Central America. L. alba exhibits variability among its different accessions, showing differences in morphology and in the composition of its essential oil. This study evaluated the phenolic profiles and the antioxidant activities of seven different accessions of L. alba. The seven accessions of L. alba studied exhibited an important phenolic content, and all accessions demonstrated antioxidant activity with different efficacies. The main flavonoids in all accessions were apigenin, luteolin, naringin and rutin. The Santa Vitória do Palmar accession exhibited higher naringin and total phenolic content. This extract was able to reduce hydrogen peroxide-induced oxidative damage in tissue homogenates of cerebellum, cerebral cortex, hippocampus and liver of Wistar rats.

  13. ASPECTS REGARDING CONSUMERS' PERCEPTION OFCORPORATE SOCIAL RESPONSIBILITY IN ALBA IULIA

    OpenAIRE

    Silvia Maican

    2014-01-01

    The main objective of the present paper is to present the way consumers in Alba Iulia,Romania, to perceive the concept of corporate social responsibility. The research represents thesummary of a larger research project pretested questionnaire. In order to achieve this objectivewe have applied a questionnaire to a number of 51 consumers from Alba Iulia. The data wereanalyzed with the help of SPSS software.The paper starts with a literature review in the area of corporate social responsibility ...

  14. Gestión comunicacional de la agenda de internacionalización de los doctorados de la Universidad del Zulia

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    Mary Ollarves

    2012-05-01

    Full Text Available En la presente investigación el objetivo general fue determinar la gestión comunicacional de la agenda de internacionalización de los doctorados de la Universidad del Zulia, en las divisiones de estudios para graduados de las Facultades Ciencias Jurídicas y Políticas, Ciencias Económicas y Sociales y Humanidades y Educación. Se destacan los aportes de los autores Ramírez (2005, Serna (2000, Monzón (2001, Wimmer y Dominick (2001, Rivera (2008, Otegui (2008, Núñez (2008, Trejo (2001; Gacel-ávila (2000, García (2001, Jaramillo y De Lisio (2004, entre otros. El estudio es de tipo cuantitativoy se utilizó como técnica la entrevista semi estructurada dirigida a los directores de: Relaciones Interinstitucionales, General de Comunicación, Divisiones de Estudios para Graduados y Coordinadores de los programas de doctorados, todos de la Universidad del Zulia. La investigación propone integrar la gestión comunicacionala la agenda académica,para promocionar la política de internacionalización de los doctorados de la Universidad del Zulia en el marco de los convenios interinstitucionales. Los resultados demostraron que ciertamente, existe una debilidad en los principios básicos organizacionales y poco interés por proyectar una imagen corporativa, aunque se han hecho adelantos significativos desde la dirección de Relaciones Interinstitucionales y la División de Estudios para Graduados de la Facultad de Humanidades y Educación para posicionarse mundialmente en el área.

  15. Revisión taxonómica del complejo Centaurea alba L. (Asteraceae) en la Península Ibérica

    OpenAIRE

    Devesa, J. A.; López, E

    2011-01-01

    Taxonomic revision of the Centaurea alba L. complex (Asteraceae) in the Iberian Peninsula.- A taxonomic revision of the Centaurea alba L. complex (Centaurea L. sect. Centaurea) in the Iberian Peninsula is presented, which is represented by two species, C. alba and C. costae Willk. Three subspecies of C. alba with reasonably well-defined areas are recognized: C. alba subsp. alba, with three varieties –alba, macrocephala Pau and latronum (Pau) E. López & Devesa-, C. alba subsp. aristifera (Pau...

  16. El doctorado en urbanismo: la revisión de un programa maduro para la preservación del conocimiento libre

    OpenAIRE

    Sevilla Buitrago, Álvaro; Hernández Aja, Agustín

    2009-01-01

    Los conflictos en la definición del doctorado en urbanismo, que emergen con la integración al EEES, tienen relación con la dificultad de sintetizar los métodos y marcos de planeamiento locales con la vocación de estandarización a nivel europeo. Esta búsqueda choca con la realidad local de cada centro y universidad y sobre todo con la especificidad de una disciplina compleja y multidimensional como la urbanística. Las universidades están exigiendo a sus centros adaptarse a un patrón investigad...

  17. TENDENCIAS HISTORIOGRÁFICAS VISTAS A TRAVÉS DE LAS TESIS DEL DOCTORADO EN CIENCIAS DE LA EDUCACIÓN RUDECOLOMBIA (1998 - 2007)

    OpenAIRE

    Olga Yanet Acuña Rodríguez

    2009-01-01

    El presente artículo pretende hacer una reflexión sobre las temáticas y metodologías empeladas en el desarrollo de las tesis doctorales realizadas en el Doctorado en Ciencias de la Educación - RUDECOLOMBIA. Es de anotar que la base del programa de formación doctoral fue el proyecto sobre "Historia de la Universidad colombiana, 1774-1992", el que se ha enriquecido con la investigación y aporte de las tesis doctorales. Así, el objeto de estudio que es la Universidad, ha sido estudiado desde div...

  18. PLAN DE ESTUDIOS DEL PROGRAMA DE DOCTORADO EN CIENCIAS EN GESTIÓN DEL CONOCIMIENTO E INNOVACIÓN PARA LA COOPERACIÓN Y COMPETITIVIDAD REGIONAL

    OpenAIRE

    Alejandra Hinojosa; María Teresa Muñoz García; José Luis Ruiz Guzmán; Javier Ruiz Ledesma; Gerardo Gómez González; Alfredo Aguilar Valdés

    2007-01-01

    El desafío de la Universidad Autónoma Chapingo es el de entender la complejidad de los problemas actuales y emprender las vías de solución, para ello se requiere una formación conceptual y metodológica de alta especialización y calidad académica. El programa Doctorado en Ciencias en Gestión del Conocimiento e Innovación, tiene como objetivo formar investigadores y consultores innovadores capaces de producir conocimiento original y desarrollos tecnológicos, derivados del análisis sistemático d...

  19. Modelo curricular de la Universidad del Zulia

    Directory of Open Access Journals (Sweden)

    Neimar Fonseca Cascioli

    2012-01-01

    Full Text Available Un modelo curricular constituye un conjunto de elementos comunes dentro de una corriente de pensamiento en el campo de la educación. El objetivo de la investigación fue explorar los modelos curriculares asumidos por la Universidad del Zulia desde 1946 a 2008. La investigación es de tipo exploratoria, y la metodología utilizada consistió en la revisión de documentos oficiales, bibliografía especializada en la temática y entrevistas a miembros de la Comisión Central de Currículo de la Universidad del Zulia de diferentes períodos. Los resultados evidencian que la universidad en referencia ha asumido dos modelos curriculares: Profesional-Técnico y el Integral. Se concluye que los currículos de las diversas carreras se han caracterizado por ser altamente profesionalizantes, enciclopédicos y conductistas

  20. Coherencia curricular y oportunidades para aprender Ciencias

    OpenAIRE

    Marcela Ruiz Zúñiga; Alejandra Meneses Arévalo; Maximiliano Montenegro Maggio

    2014-01-01

    Se determinó la coherencia curricular entre oportunidades de aprendizaje y habilidades científicas ofrecidas por un texto escolar chileno y por las actividades de aula en 5º grado asociadas al contenido "Fuerza". Se realizó un análisis discursivo de la unidad didáctica del texto y de las actividades con el fin de construir matrices de contenido para tópicos y habilidades; la medición de coherencia curricular se realizó a través del índice de Porter para la coherencia. Los resultados muestran ...

  1. Curricular Guidelines for Dental Auxiliary Radiology.

    Science.gov (United States)

    Journal of Dental Education, 1981

    1981-01-01

    AADS curricular guidelines suggest objectives for these areas of dental auxiliary radiology: physical principles of X-radiation in dentistry, related radiobiological concepts, principles of radiologic health, radiographic technique, x-ray films and intensifying screens, factors contributing to film quality, darkroom, and normal variations in…

  2. Cross-Curricular Science and History

    Science.gov (United States)

    Byrne, Eleanor

    2011-01-01

    Cross-curricular teaching and learning can be an approach that not only looks to amalgamate subjects together for the sake of greater understanding of each individual subject, but also to make meaningful connections between subjects based on disciplinary similarities. This involves a deeper understanding of each subject's specific characteristics…

  3. El alba-tcp mirado con buenos ojos

    Directory of Open Access Journals (Sweden)

    Christopher David Absell

    2012-01-01

    Full Text Available El surgimiento de la Alianza Bolivariana para los Pueblos de Nuestra América-Tratado de Comercio de los Pueblos (alba-tcp representa una novedad de importancia regional e internacional; sin embargo hasta la fecha el trabajo académico sobre la organización ha sido escaso y se ha caracterizado por tener un enfoque metodológico descriptivo carente de investigación empírica comprensiva. En este artículo sostengo que este enfoque metodológico ha imbuido la literatura de un sesgo positivo a favor del alba-tcp y sus proyectos de desarrollo. El objetivo de este artículo es examinar esta literatura para determinar una agenda de investigación para el estudio del alba-tcp.

  4. A new endornavirus species infecting Malabar spinach (Basella alba L.).

    Science.gov (United States)

    Okada, Ryo; Kiyota, Eri; Moriyama, Hiromitsu; Toshiyuki, Fukuhara; Valverde, Rodrigo A

    2014-04-01

    A putative new endornavirus was isolated from Malabar spinach (Basella alba). The viral dsRNA consisted of 14,027 nt with a single ORF that coded for a polyprotein of 4,508 aa. The genome organization was similar to that of four other endornaviruses. Conserved domains for helicase-1, capsular synthase, UDP-glucose-glycosyltransferase (UGT), and RdRp were detected. Infected plants were phenotypically undistinguishable from healthy ones. The name Basella alba endornavirus is proposed for the virus isolated from Malabar spinach. PMID:24122112

  5. Understanding backward design to strengthen curricular models.

    Science.gov (United States)

    Emory, Jan

    2014-01-01

    Nurse educators have responded to the call for transformation in education. Challenges remain in planning curricular implementation to facilitate understanding of essential content for student success on licensure examinations and in professional practice. The conceptual framework Backward Design (BD) can support and guide curriculum decisions. Using BD principles in conjunction with educational models can strengthen and improve curricula. This article defines and describes the BD process, and identifies reported benefits for nursing education. PMID:24743175

  6. Coherencia curricular y oportunidades para aprender Ciencias

    Directory of Open Access Journals (Sweden)

    Marcela Ruiz Zúñiga

    2014-12-01

    Full Text Available Se determinó la coherencia curricular entre oportunidades de aprendizaje y habilidades científicas ofrecidas por un texto escolar chileno y por las actividades de aula en 5º grado asociadas al contenido "Fuerza". Se realizó un análisis discursivo de la unidad didáctica del texto y de las actividades con el fin de construir matrices de contenido para tópicos y habilidades; la medición de coherencia curricular se realizó a través del índice de Porter para la coherencia. Los resultados muestran que el texto escolar promueve más observación (24.2% y menos ordenamiento de la información (0.95%. En las clases, predominó repetición de contenidos de manera oral y escrita (66.8% y menos análisis de hipótesis (1.6%. El índice de Porter entre el texto y el aula fue 0.360, entre el texto y el marco curricular fue 0.267. Se concluye que el texto y las clases ofrecen leves oportunidades para el desarrollo de las habilidades científicas.

  7. ECONOMIC CRISIS IMPACT ON COUNTY ALBA HOTEL INDUSTRY

    OpenAIRE

    Claudia Olimpia MOISA

    2012-01-01

    The present paper, dominated by the global economic crisis effects is and continues to be a critical time for global tourism industry and for Romanian too. This study tries to play on a particular case, Park Hotel, located in Alba Iulia, the impact of this phenomenon over tourist hotel services.

  8. ECONOMIC CRISIS IMPACT ON COUNTY ALBA HOTEL INDUSTRY

    Directory of Open Access Journals (Sweden)

    MOISA Claudia Olimpia

    2012-12-01

    Full Text Available The present paper, dominated by the global economic crisis effects is and continues to be a critical time for global tourism industry and for Romanian too. This study tries to play on a particular case, Park Hotel, located in Alba Iulia, the impact of this phenomenon over tourist hotel services.

  9. Conceptualising Curricular Space in Busyness Education

    DEFF Research Database (Denmark)

    Blasco, Maribel

    2016-01-01

    This article outlines a conceptual framework for conceptualising students’ experiences of curricular space from an aesthetic perspective. The curriculum is conceived as a three-dimensional, aesthetic artefact that elicits sensory responses and judgements about meaning that can impact learning...... and creative thinking. The Japanese concept of ma is proposed as a fruitful way of thinking about space in curricula not as wasteful, inefficient or a mere void to be filled but as the element that enables learning to result from exposing students to structures and content...

  10. Acute hypotensive and diuretic activities of Artemisia herba alba aqueous extract in normal rats

    Institute of Scientific and Technical Information of China (English)

    Naoufel Ali Zeggwagh; Jean Baptiste Michel; Mohamed Eddouks

    2014-01-01

    Objective:To evaluate the effect of Artemisia herba alba (A. herba alba) intravenous injection on cardiovascular and renal function in normal rats. Methods:The effect of intravenous injection of A. herba alba extract at the different doses of 50, 100 and 200 mg/kg was investigated in normal rats. Diuresis, heart frequency and electrolytes concentrations were analyzed. Results: Intravenous bolus injection of A. herba alba at the different doses of 50, 100 and 200 mg/kg produced a dose dependent reduction in arterial blood pressure (P Conclusions: We conclude that the aqueous A. herba alba extract possesses a potent acute hypotensive effect on normal rats. In addition, A. herba alba perfusion may affect renal function to increase urine and electrolytes excretion.

  11. Curricular Deliberation about "Hamlet": An Exercise in the Practical.

    Science.gov (United States)

    Siegel, Judith Susan

    This study attempts to clarify and exploit Joseph Schwab's recent and current work on "practical" and "eclectic" curriculums in a simulated deliberation about a concrete curricular question, How might "Hamlet" be taught to one group of high school juniors? By exemplifying curricular deliberation, it aims to clarify Schwab's doctrine and to make it…

  12. A Review on Medicinal Importance of Basella alba L.

    OpenAIRE

    Roshan Adhikari; Naveen Kumar HN; Shruthi SD

    2012-01-01

    The ethanobotanical properties of Basella alba have been reviewed in this article. Various parts of the plant are used for treatment of the diseases as well as for different healing activities of human beings as well as animals across the globe especially in India and China. Its use has been discovered as asperient, rubefacient and for catarrhl infections. Some of the compounds available especially in the plant are basellasaponins, kaempherol, betalin, etc. Several extracts like aqueous, chlo...

  13. Morus alba Enhanced Functional Recovery After Sciatic Nerve Crush Injury

    Directory of Open Access Journals (Sweden)

    Supaporn Mucimapura

    2010-01-01

    Full Text Available Problem statement: Traumatic nerve injury has been recognized as one of the problems commonly found in road traffic crashes. Therefore, searching for the effective substances for promoting the functional recovery of nerve after injury is in required. Accumulating lines of evidence show that free radicals generated after injury contribute the important role to retard functional recovery, thus the substance possessing anti-oxidant could facilitate functional recovery. Based on the effect of antioxidant to promote functional recovery of nerve after injury mentioned earlier, we hypothesized that Morus alba extract, a substance possessing anti-oxidant activity, should be able to facilitate the functional recovery of peripheral nerve after injury. Approach: To elucidate this issue, male Wistar rats, weighing 180-220 g, were orally given the aqueous extract of Morus alba at various doses ranging from 0.1, 1 and 10 mg kg-1 BW 5days before and 21 days after sciatic nerve injury. Motor, sensory and sensorimotor coordination were observed every 3 days for 3 weeks by using De Medinacelli method, foot reflex withdrawal test and rotarod test, respectively. Results: The low dose of the extract significantly improved both sensory and motor functions after crush injury. Although sensory function recovers more sooner than the motor function, it fails to show full recovery within weeks. Thus, the present study demonstrates the potential of M. alba extract to enhance functional recovery after crush injury. Conclusion: In conclusion, Morus alba may serve as functional food to promote nerve recovery after injury. However, further studies about the possible active ingredient (s and underlying mechanism (s are required.

  14. Barn owl (Tyto alba) siblings vocally negotiate resources.

    OpenAIRE

    Roulin, A; Kölliker, M; Richner, H.

    2000-01-01

    Current theory proposes that nestlings beg to signal hunger level to parents honestly, or that siblings compete by escalating begging to attract the attention of parents. Although begging is assumed to be directed at parents, barn owl (Tyto alba) nestlings vocalize in the presence but also in the absence of the parents. Applying the theory of asymmetrical contests we experimentally tested three predictions of the novel hypothesis that in the absence of the parents siblings vocally settle cont...

  15. Flavonoids from the flowers of Nymphaea alba L.

    Directory of Open Access Journals (Sweden)

    Jerzy Jambor

    2014-02-01

    Full Text Available Ten flavonoids were obtained from the flowers of Nymphaea alba L. Their structures were determined mainly on the basis of spectral analyses (UV, 'H NMR, MS. The following aglycons were isolated: quercetin, kaempferol, isokaempferide and apigenin as well as the following glycosides: quercetion 4'-β-xyloside, 3-methylquercetin 3'-β-xyloside and a mixture of quercetin 3-galactoside and 3-glucoside. The structures of three compounds obtained in very small amounts were determined in part.

  16. In vitro antimicrobial activity of mangrove plant Sonneratia alba

    Institute of Scientific and Technical Information of China (English)

    Shahbudin Saad; Muhammad Taher; Deny Susanti; Haitham Qaralleh; Anis Fadhlina Izyani Bt Awang

    2012-01-01

    Objective:To investigate the antimicrobial property of mangrove plant Sonneratia alba (S. alba). Methods: The antimicrobial activity was evaluated using disc diffusion and microdilution methods against six microorganisms. Soxhlet apparatus was used for extraction with a series of solvents, n-hexane, ethyl acetate and methanol in sequence of increasing polarity. Results:Methanol extract appeared to be the most effective extract while n-hexane extract showed no activity. The antimicrobial activities were observed against the gram positive bacteria Staphylococcus aureus (S. aureus) and Bacillus cereus (B. cereus), the gram negative Escherichia coli (E. coli) and the yeast Cryptococcus neoformans. Pseudomonas aeruginosa and Candida albicans appeared to be not sensitive to the concentrations tested since no inhibition zone was observed. E. coli (17.5 mm) appeared to be the most sensitive strain followed by S. aureus (12.5 mm) and B. cereus (12.5 mm). Conclusions:From this study, it can be concluded that S. alba exhibits antimicrobial activities against certain microorganisms.

  17. Calydorea alba (Iridaceae: Tigridieae, a new species from Uruguay Calydorea alba (Iridaceae: Tigridieae, una nueva especie de Uruguay

    Directory of Open Access Journals (Sweden)

    G. G. Roitman

    2005-12-01

    Full Text Available Calydorea alba is described from wet grasslands of northern Uruguay. The new species resembles Calydorea azurea, but can be easily distinguished by the smaller white flowers (3.2-3.6 cm wide vs. 4.4-5.3 cm wide, and linear subulate not truncate, style branches.Se describe Calydorea alba proveniente de pastizales húmedos del norte de Uruguay. Esta nueva especie se asemeja a Calydorea azurea, pero puede ser fácilmente distinguida por sus flores blancas más pequeñas (3,2-3,6 cm vs. 4.4-5.3 cm, de diámetro, y las ramas de estilo lineares, subuladas no truncadas.

  18. TENDENCIAS HISTORIOGRÁFICAS VISTAS A TRAVÉS DE LAS TESIS DEL DOCTORADO EN CIENCIAS DE LA EDUCACIÓN RUDECOLOMBIA (1998 - 2007

    Directory of Open Access Journals (Sweden)

    Olga Yanet Acuña Rodríguez

    2009-01-01

    Full Text Available El presente artículo pretende hacer una reflexión sobre las temáticas y metodologías empeladas en el desarrollo de las tesis doctorales realizadas en el Doctorado en Ciencias de la Educación - RUDECOLOMBIA. Es de anotar que la base del programa de formación doctoral fue el proyecto sobre "Historia de la Universidad colombiana, 1774-1992", el que se ha enriquecido con la investigación y aporte de las tesis doctorales. Así, el objeto de estudio que es la Universidad, ha sido estudiado desde diversas tendencias historiográficas, en las que se resalta su papel en el contexto local y nacional. Esto nos ha permitido identificar algunas tendencias así: Historia institucional, historia social de la educación, élites y poder político, historia socio - cultural, historia de los saberes escolares; que nos han permitido identificar nuevos problemas, nuevas metodologías, nuevos actores, nuevas fuentes; que se contraponen al historicismo.

  19. Counter-Hegemonic Regionalism and Higher Education for All: Venezuela and the ALBA

    Science.gov (United States)

    Muhr, Thomas

    2010-01-01

    This paper employs new regionalism theory and regulatory regionalism theory in its analysis and theorisation of the Bolivarian Alliance for the Peoples of Our America (ALBA) as a counter-hegemonic Latin American and Caribbean (LAC) regionalism. As (initially) the regionalisation of Venezuela's Bolivarian Revolution, ALBA is centred around the idea…

  20. Construcción de un "perfecto" albañil

    OpenAIRE

    BRAVO RAMÍREZ, ROBERTO

    2011-01-01

    La idea principal de este proyecto es el estudio pionero, dentro del sector de la construcción español, del trabajo y las experiencias laborales de los integrantes en el oficio de albañil. Albañil es "el maestro u oficio de albañilería". De esta definición podemos deducir que el trabajo del albañil puede considerarse como un arte, por tanto es una actividad para la cual es necesario tener formación y experiencia. Bravo Ramírez, R. (2011). Construcción de un "perfecto" albañil. http://hdl.h...

  1. 22 CFR 229.455 - Textbooks and curricular material.

    Science.gov (United States)

    2010-04-01

    ... SEX IN EDUCATION PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE Discrimination on the Basis of Sex in Education Programs or Activities Prohibited § 229.455 Textbooks and curricular...

  2. Morphogenetic responses ofPopulus alba L. under salt stress

    Institute of Scientific and Technical Information of China (English)

    Mejda Abassi; Khaled Mguis; Zoubeir Béjaoui; Ali Albouchi

    2014-01-01

    The morphogenetic responses to salt stress of TunisianPopu-lus alba clones were studied in order to promote their plantation in dam-aged saline areas. One year-old plants of threeP. alba clones (MA-104, MA-195 and OG) were subjected to progressive salt stress by irrigation during two consecutive years. The plants were grown in a nursery, inside plastic receptacles containing sandy soil and were irrigated with tap water (control) or 3-6 g/l NaCl solution. During this study, leaf epinasty, elongation rate, vigor, internode length, plant architecture, and number of buds were evaluated. Test clone response was highly dependent on the applied treatment and degree of accommodation.The most pronounced alterations were induced under 6g/l of NaCl treatment including leaf epinasty, leaf elongation rate delay, vigor decrease, internode length shortening, and morphogenetic modifications. These responses were less noticeable in the MA-104 clone with respect to the two other clones. The salt effect induced a delay in the leaf elongation rate on the MA-195 and OG clones leading to an early leaf maturity. The vigour and internode length of the MA-104 clone was less affected than the other clones. The OG clone was the most salt-sensitive thus, it developed shorter branches and more buds number than MA-195 and MA-104. The effect of long-term salt stress was to induce early flowering of theP. alba clones which suggests that mechanism of salt accommodation could be devel-oped.

  3. A Review on Medicinal Importance of Basella alba L.

    Directory of Open Access Journals (Sweden)

    Roshan Adhikari

    2012-04-01

    Full Text Available The ethanobotanical properties of Basella alba have been reviewed in this article. Various parts of the plant are used for treatment of the diseases as well as for different healing activities of human beings as well as animals across the globe especially in India and China. Its use has been discovered as asperient, rubefacient and for catarrhl infections. Some of the compounds available especially in the plant are basellasaponins, kaempherol, betalin, etc. Several extracts like aqueous, chloroform, ethanol and petroleum has been used for different pharmaceutical activities.

  4. Preliminary investigation of patchaippasali mucilage (Basella alba) as tablet binder

    OpenAIRE

    Ramu, G.; G. Krishna Mohan; Jayaveera, K N

    2011-01-01

    Basella alba leaf mucilage was investigated as a binder in paracetamol tablets prepared by wet granulation method. Mucilage at four levels (concentrations of mucilage binders: 4, i.e., 2.5, 5, 7.5 and 10% w/w) were studied. No significant work has been reported to use it as a tablet binder. The evaluation of granules showed 0.62 to 0.76 mm granule size, 28°47′ to 30°27′ angle of repose and 31.57 to 23.45% fines. Moisture content of the different granulations was less than 1%. The tablets were...

  5. Preliminary investigation of patchaippasali mucilage (Basella alba as tablet binder

    Directory of Open Access Journals (Sweden)

    G Ramu

    2011-01-01

    Full Text Available Basella alba leaf mucilage was investigated as a binder in paracetamol tablets prepared by wet granulation method. Mucilage at four levels (concentrations of mucilage binders: 4, i.e., 2.5, 5, 7.5 and 10% w/w were studied. No significant work has been reported to use it as a tablet binder. The evaluation of granules showed 0.62 to 0.76 mm granule size, 28°47′ to 30°27′ angle of repose and 31.57 to 23.45% fines. Moisture content of the different granulations was less than 1%. The tablets were prepared and evaluated for average weight and weight variation, thickness, content uniformity, hardness, friability, disintegration time and in vitro dissolution profiles. All the batches of tablets exhibited good uniformity in content. The hardness was within the range of 4.5 to 5.5 kg/cm 2 . The hardness was increased and friability decreased with the increasing concentration of binding agent. The disintegration time also increased with increasing binder concentrations. The evaluation of tablet showed 0.434 to 0.410% friability, 9 to 18 minutes disintegration time and the drug release was more than 70% in 60 minutes. Tablets at 7.5% w/w binder concentration showed more optimum results as tablet binder. The B. alba mucilage was found to be good as a binder to paracetamol tablets.

  6. Tectonic histories between Alba Patera and Syria Planum, Mars

    Science.gov (United States)

    Anderson, R.C.; Dohm, J.M.; Haldemann, A.F.C.; Hare, T.M.; Baker, V.R.

    2004-01-01

    Syria Planum and Alba Patera are two of the most prominent features of magmatic-driven activity identified for the Tharsis region and perhaps for all of Mars. In this study, we have performed a Geographic Information System-based comparative investigation of their tectonic histories using published geologic map information and Mars Orbiter Laser Altimetry (MOLA) data. Our primary objective is to assess their evolutional histories by focusing on their extent of deformation in space and time through stratigraphic, paleotectonic, topographic, and geomorphologic analyses. Though there are similarities among the two prominent features, there are several distinct differences, including timing deformational extent, and tectonic intensity of formation. Whereas Alba Patera displays a major pulse of activity during the Late Hesperian/Early Amazonian, Syria Planum is a long-lived center that displays a more uniform distribution of simple graben densities ranging from the Noachian to the Amazonian, many of which occur at greater distances away from the primary center of activity. The histories of the two features presented here are representative of the complex, long-lived evolutional history of Tharsis. ?? 2004 Elsevier Inc. All rights reserved.

  7. Hypocholesterolemic and Antiatherosclerotic Potential of Basella alba Leaf Extract in Hypercholesterolemia-Induced Rabbits.

    Science.gov (United States)

    Baskaran, Gunasekaran; Salvamani, Shamala; Azlan, Azrina; Ahmad, Siti Aqlima; Yeap, Swee Keong; Shukor, Mohd Yunus

    2015-01-01

    Hypercholesterolemia is the major risk factor that leads to atherosclerosis. Nowadays, alternative treatment using medicinal plants gained much attention since the usage of statins leads to adverse health effects, especially liver and muscle toxicity. This study was designed to investigate the hypocholesterolemic and antiatherosclerotic effects of Basella alba (B. alba) using hypercholesterolemia-induced rabbits. Twenty New Zealand white rabbits were divided into 5 groups and fed with varying diets: normal diet, 2% high cholesterol diet (HCD), 2% HCD + 10 mg/kg simvastatin, 2% HCD + 100 mg/kg B. alba extract, and 2% HCD + 200 mg/kg B. alba extract, respectively. The treatment with B. alba extract significantly lowered the levels of total cholesterol, LDL, and triglycerides and increased HDL and antioxidant enzymes (SOD and GPx) levels. The elevated levels of liver enzymes (AST and ALT) and creatine kinase were noted in hypercholesterolemic and statin treated groups indicating liver and muscle injuries. Treatment with B. alba extract also significantly suppressed the aortic plaque formation and reduced the intima: media ratio as observed in simvastatin-treated group. This is the first in vivo study on B. alba that suggests its potential as an alternative therapeutic agent for hypercholesterolemia and atherosclerosis. PMID:26697097

  8. Ectomycorrhizal fungal assemblages of Abies alba Mill. outside its native range in Poland.

    Science.gov (United States)

    Rudawska, Maria; Pietras, Marcin; Smutek, Iwona; Strzeliński, Paweł; Leski, Tomasz

    2016-01-01

    Abies alba (Mill.) is an important forest tree species, native to the mountainous regions of Europe but has been also widely introduced in the lowlands outside its native range. Like most forest tree species, A. alba forms obligate mutualisms with ectomycorrhizal (ECM) fungi. This investigation sought to examine ECM fungal communities of A. alba when the species grows 400 km north of its native range in the region of Pomerania in Poland. We surveyed for ECM fungi by sampling live roots from four mature forest stands where the A. alba component ranged from 20 to 100%. Ectomycorrhizal fungal symbionts were identified based on morphotyping and sequencing of the internal transcribed spacer (ITS) of nuclear ribosomal DNA (rDNA). Thirty-five ECM fungal taxa were distinguished on root tips of A. alba from all tested stands with 22 to 27 ECM fungal taxa in the individual stand. The diversity and similarity metrics revealed a lack of statistical differences in the structure of the ECM fungal community between stands varying in overstory tree composition. Cenococcum geophilum was the most common fungal species at all investigated A. alba stands, with an abundance of 50 to 70%. The ECM community was characterized by the lack of Abies-specific fungal symbionts and a rich and diverse suite of host-generalist mycobionts that seem to be sufficient for successful growth and development of A. alba outside of its native range. PMID:26071873

  9. Hypocholesterolemic and Antiatherosclerotic Potential of Basella alba Leaf Extract in Hypercholesterolemia-Induced Rabbits

    Directory of Open Access Journals (Sweden)

    Gunasekaran Baskaran

    2015-01-01

    Full Text Available Hypercholesterolemia is the major risk factor that leads to atherosclerosis. Nowadays, alternative treatment using medicinal plants gained much attention since the usage of statins leads to adverse health effects, especially liver and muscle toxicity. This study was designed to investigate the hypocholesterolemic and antiatherosclerotic effects of Basella alba (B. alba using hypercholesterolemia-induced rabbits. Twenty New Zealand white rabbits were divided into 5 groups and fed with varying diets: normal diet, 2% high cholesterol diet (HCD, 2% HCD + 10 mg/kg simvastatin, 2% HCD + 100 mg/kg B. alba extract, and 2% HCD + 200 mg/kg B. alba extract, respectively. The treatment with B. alba extract significantly lowered the levels of total cholesterol, LDL, and triglycerides and increased HDL and antioxidant enzymes (SOD and GPx levels. The elevated levels of liver enzymes (AST and ALT and creatine kinase were noted in hypercholesterolemic and statin treated groups indicating liver and muscle injuries. Treatment with B. alba extract also significantly suppressed the aortic plaque formation and reduced the intima: media ratio as observed in simvastatin-treated group. This is the first in vivo study on B. alba that suggests its potential as an alternative therapeutic agent for hypercholesterolemia and atherosclerosis.

  10. The mosaic of ancestral karyotype blocks in the Sinapis alba L. genome.

    Science.gov (United States)

    Nelson, Matthew N; Parkin, Isobel A P; Lydiate, Derek J

    2011-01-01

    The organisation of the Sinapis alba genome, comprising 12 linkage groups (n = 12), was compared with the Brassicaceae ancestral karyotype (AK) genomic blocks previously described in other crucifer species. Most of the S. alba genome falls into conserved triplicated genomic blocks that closely match the AK-defined genomic blocks found in other crucifer species including the A, B, and C genomes of closely related Brassica species. In one instance, an S. alba linkage group (S05) was completely collinear with one AK chromosome (AK1), the first time this has been observed in a member of the Brassiceae tribe. However, as observed for other members of the Brassiceae tribe, ancestral genomic blocks were fragmented in the S. alba genome, supporting previously reported comparative chromosome painting describing rearrangements of the AK karyotype prior to the divergence of the Brassiceae from other crucifers. The presented data also refute previous phylogenetic reports that suggest S. alba was more closely related to Brassica nigra (B genome) than to B. rapa (A genome) and B. oleracea (C genome). A comparison of the S. alba and Arabidopsis thaliana genomes revealed many regions of conserved gene order, which will facilitate access to the rich genomic resources available in the model species A. thaliana for genetic research in the less well-resourced crop species S. alba.

  11. Ectomycorrhizal fungal assemblages of Abies alba Mill. outside its native range in Poland

    OpenAIRE

    Rudawska, Maria; Pietras, Marcin; Smutek, Iwona; Strzeliński, Paweł; Leski, Tomasz

    2015-01-01

    Abies alba (Mill.) is an important forest tree species, native to the mountainous regions of Europe but has been also widely introduced in the lowlands outside its native range. Like most forest tree species, A. alba forms obligate mutualisms with ectomycorrhizal (ECM) fungi. This investigation sought to examine ECM fungal communities of A. alba when the species grows 400 km north of its native range in the region of Pomerania in Poland. We surveyed for ECM fungi by sampling live roots from f...

  12. In vitro antibacterial activity of ethanolic extract of Morus alba leaf against periodontal pathogens

    Directory of Open Access Journals (Sweden)

    Shilpa Gunjal

    2015-01-01

    Results: P. gingivalis was the most sensitive organism against the M. alba extract with an MIC value of 1.95 mg/ml; while T. forsythia and P. gingivalis both were most sensitive organisms against chlorhexidine gluconate with MIC values of 0.00781 mg/ml. Conclusion: M. alba possess good antibacterial activity against A. actinomycetemcomitans, P. gingivalis and T. forsythia and thus would be beneficial for the prevention and treatment of periodontal disease. However, chlorhexidine gluconate was found to be more effective when compared to M. alba.

  13. Innovar modelos de gestión para mejorar la calidad de los doctorados en educación en Colombia

    Directory of Open Access Journals (Sweden)

    Gilma Rosa Sanabria León

    2012-01-01

    Full Text Available La investigación que da origen a este artícul o se orientó a comprender los factores de calidad y las prácticas de gestión presentes en los Programas de Formación Doctoral en Educación en Colombia, centrada en el caso específico de un programa doctoral de la Ciudad de Bogotá. Se visibilizan preocupant es indicadores que reflejan deficiencias en los factores y características de calidad, tanto en lo relacionado a la organización, gestión e impacto social del conocimiento, como en los objetivos misionales del programa académico. Se evidencia además una ba ja producción académica y de investigación, y la que existe presenta un mediano impacto teórico, metodológico y social. Un Programa Doctoral en Educación endogámico, con poco diálogo e interacción con programas similares a nivel regional, nacional e intern acional, presentando un escaso trabajo colaborativo, en red y de conexiones que estimulen el debate de saberes necesario en este alto nivel de formación. Se identificaron también, sin embargo , fortalezas destacables vistas desde los indicadores nacionales e internacionales, a pesar de que las políticas nacionales e institucionales no apoyan en forma decidida ni estimulan los programas de investigación en educación. Así, este artículo plantea la necesidad de dar un salto a nuevos modelos de gestión educativa a partir del análisis de un caso concreto, desde la certeza de que la evaluación constituye el primer paso para redimensionar la organización del trabajo conjunto hacia la construcción de un sistema que permita mejorar la calidad de los doctorados en educ ación en Colombia.

  14. Tesis de doctorado tema colombiano

    Directory of Open Access Journals (Sweden)

    Boletín Cultural y Bibliográfico Banco de la República

    2014-03-01

    Full Text Available La lista publicada a continuación corresponde a tesis obsequiadas a la Biblioteca Luis Ángel Arango por el Institut des Hautes Études de l'Amérique Latine y por el Centre de Recherche et de Documentation sur l'Amérique Latine. Se recibieron en formato de microficha, como parte de una donación más amplia, que comprende 1.362 tesis sobre temas de América Latina. Acompaña la colección un CD-ROM que incluye un catálogo completo, que puede consultarse mediante búsquedas por autor, país, tema, título, periodo histórico, universidad, etc.

  15. Triterpenoid saponins from Lippia alba (Mill.) N. E. Brown

    International Nuclear Information System (INIS)

    Two saponins were isolated from the leaves of Lippia alba. Their structures were established using one- and two-dimensional NMR spectroscopy and mass spectrometry. These new compounds were elucidated as 3-O-β-D-glucopyranosyl-28-O-(α-L-rhamnopyranosyl-(1→3)-beta-D-xylopyranosyl -(1→4)-α-L-rhamnopyranosyl-(1→2)-α-L-arabinopyranosyl)-16α, 23-dihydroxy-olean -12-en-28-oic acid, named as Lippiasaponin I (2) and as 3-O-β-D-glucopyranosyl-28-O-(α-L-rhamnopyranosyl-(1→3)-β-D-xylopyranosyl- (1→4)-α-L-rhamnopyranosyl-(1→3)-α-Larabinopyranosyl)-16α,23-dihydroxy-olean -12-en-28-oic acid, named Lippiasaponin II (3). (author)

  16. Adventitious bud regeneration from the stigma of Sinapis alba L.

    Directory of Open Access Journals (Sweden)

    Elżbieta Zenkteler

    2012-12-01

    Full Text Available Stigmas isolated from flower buds of 'Nakielska' variety of Sinapis alba were used to develop a micropropagation method suitable for breeding of new cultivars. The origin of adventitious bud regeneration was studied on MS medium, under stimulation by bezylaminopurine (BAP in combination with 2,4-D - dichlorophenoxyacetic acid (2,4-D. Histological analysis showed the structure of Sinapis stigma (composed from four types of tissue: papillae, transmitting tissue, parenchyma and vascular bundles and revealed that numerous meristematic centers developed from parenchyma cells in close vicinity of vascular bundles. Buds very quickly appeared on the surface of initial explants and later formed multiplantlets that were easily rooted in the soil.

  17. ANTIOXIDANT, CYTOTOXIC AND ANTIMICROBIAL ACTIVITY OF SONNERATIA ALBA BARK

    Directory of Open Access Journals (Sweden)

    Md. Ali Milon*1, Md. Abdul Muhit , Durajan Goshwami , Mohammad Mehedi Masud and Bilkis Begum

    2012-07-01

    Full Text Available The present study was undertaken to evaluate antioxidant, cytotoxic and antimicrobial activity of Sonneratia alba bark. The carbon tetrachloride, chloroform soluble partitionate of methanolic extract and crude methanolic extract showed significant antioxidant property using 1,1-diphenyl-2-pecrylhydrazyl(DPPH scavenging assay ,of which chloroform partitionate and crude extract demonstrated highest activity with IC50 value of 12µg/ml and 14µg/ml respectively. In the brine shrimp lethality bioassay, LC50 values obtained from the best fit line slope were 0.812, 14.94, 0.831 and 3.288 µg/ml for standard (Vincristine sulphate, n-Hexane, carbon tetrachloride and chloroform soluble partitionate of methanolic extract respectively. The carbon tetrachloride soluble fraction revealed moderate activities against Bacillus cereus, Bacillus subtilis, Sarcina lutea, Pseudomonas aeruginosa and Shigella dysenteriae test organisms.

  18. Fluoride in the prey of barn owls (Tyto alba).

    Science.gov (United States)

    Thomson, A G

    1987-01-01

    Bone fluoride in short-tailed voles (Microtus agrestis) and common shrews (Sorex araneus), the prey of barn owls (Tyto alba), was studied on Anglesey, North Wales. The average fluoride content of M. agrestis skulls obtained from a location 0.9 km from an aluminium reduction plant was significantly greater than that of skulls from another location 22 km from the source of industrial fluoride pollution. At both locations, mean fluoride levels of skulls extracted from owl pellets and those of voles trapped mechanically were broadly similar but important differences existed. Near the aluminium reduction plant, owls caught voles and shrews with a much wider range of fluoride levels than occurred at a single trapping site. However, there was no evidence for selection of heavily fluoridated prey. Within 1 km of the aluminium reduction plant, six trapping sites yielded S. araneus with a fourfold difference between the highest and lowest mean bone fluoride level. PMID:15092770

  19. Triterpenoid saponins from Lippia alba (Mill.) N. E. Brown

    Energy Technology Data Exchange (ETDEWEB)

    Farias, Mareni R.; Pertile, Roberto; Correa, Melissa M.; Schenkel, Eloir P., E-mail: marenif@yahoo.com.b [Universidade Federal de Santa Catarina (UFSC), Florianopolis, SC (Brazil). Dept. de Ciencias Farmaceuticas. Programa de Pos-graduacao em Farmacia; Almeida, Maria Tereza R. de; Palermo, Jorge A. [Universidad de Buenos Aires (Argentina). Facultad de Ciencias Exactas y Naturales. Dept. de Quimica Organica

    2010-07-01

    Two saponins were isolated from the leaves of Lippia alba. Their structures were established using one- and two-dimensional NMR spectroscopy and mass spectrometry. These new compounds were elucidated as 3-O-beta-D-glucopyranosyl-28-O-(alpha-L-rhamnopyranosyl-(1->3)-beta-D-xylopyranosyl -(1->4)-alpha-L-rhamnopyranosyl-(1->2)-alpha-L-arabinopyranosyl)-16alpha, 23-dihydroxy-olean -12-en-28-oic acid, named as Lippiasaponin I (2) and as 3-O-beta-D-glucopyranosyl-28-O-(alpha-L-rhamnopyranosyl-(1->3)-beta-D-xylopyranosyl- (1->4)-alpha-L-rhamnopyranosyl-(1->3)-alpha-Larabinopyranosyl)-16alpha,23-dihydroxy-olean -12-en-28-oic acid, named Lippiasaponin II (3). (author)

  20. Radioactively labelled phytic acid from maturing seeds of sinapis alba

    International Nuclear Information System (INIS)

    Maturing seeds of Sinapis alba were incubated with D-[U-14C]glucose, sodium [1-14C] acetate or myo-[U14C] inositol in order to prepare radioactively labelled phytic acid with high specific activity. Although each substrate was utilized for the biosynthesis of phytic acid, maximum incorporation of radioactivity into phytic acid was found with myo-inositol. Radiochemical purity of the [U-14C]phytic acid preparations was confirmed by chromatographic techniques. Such preparations should be useful for the study of interaction of phytic acid with metal ions and proteins and may serve as substrate in the assay should be useful for the study of interaction of phytic acid with metal ions and proteins and may serve as substrate in the assay of phytase. (orig.)

  1. Implementation of an Integrated Longitudinal Curricular Activity for Graduating Pharmacy Students

    OpenAIRE

    Karimi, Reza; Meyer, Doug; Fujisaki, Brad; Stein, Susan

    2014-01-01

    Objectives. To evaluate whether a novel integrated longitudinal curricular activity to prepare graduating doctor of pharmacy (PharmD) students for 2 comprehensive examinations was successful, and to assess whether it engaged other pharmacy students in curricular discussion and learning.

  2. EFFECT OF TEMPERATURE ON THE BIOLOGY OF TUBEROLACHNUS SALIGNUS (GMELIN) (STERNORRHYNCHA: APHIDIDAE) ON (SALIX ALBA)

    OpenAIRE

    Nıhal ÖZDER; SAĞLAM, Özgür

    2008-01-01

    The development time, survivoship and reproduction of Tuberolachnus salignus (Gmelin)( Lachninae: Lachnini) were studied on Salix alba at fi ve constant temperatures (17.5°C, 20°C, 22.5°C, 25°C and 27.5°C ). The developmental time of immature stages ranged from 17.00 days at 17.5°C to 12.21 days at 25°C on Salix alba. The total percentage of survivorship of immature stages varied from 50% and 70% 17.5°C -20°C on S. alba. The largest r m valueoccurred with 0.2540 at 20°C on S. alba. The mean g...

  3. Effect of Eclipta alba on acute seizure models: a GABAA-mediated effect

    Directory of Open Access Journals (Sweden)

    M F Shaikh

    2013-01-01

    Full Text Available In the present study, anticonvulsant activity of methanol extract of Eclipta alba (10-200 mg/kg was studied using pentylenetetrazole- and picrotoxin-induced seizure models. Mechanism of effect of methanol extract of Eclipta alba was further elucidated by studying its GABA A receptor modulatory activity and its effect on levels of GABA in mice brain. Methanol extract of Eclipta alba exhibited potent anticonvulsant activity but has saturation of its pharmacological activity at 50 mg/kg. At the concentration of 10 mg/ml, contractions induced in guinea pig ileum was blocked by picrotoxin, but it didn′t not show any increase in GABA levels in mice brain after treatment. Hence, it can be concluded that methanol extract of Eclipta alba possesses potent anticonvulsant activity because of its positive modulatory effect on GABA A receptors.

  4. DEVELOPMENT POLICIES IN ALBA IULIA AREA OF INFLUENCE. AN INTEGRATED APPROACH

    Directory of Open Access Journals (Sweden)

    S. A. NICULA

    2015-06-01

    Full Text Available Development Policies in Alba Iulia Area of Influence. An Integrated Approach. The paper represents an integrated and holarchical perspective on the spatial development policies and its component measures and projects related to the City of Alba Iulia, its area of influence and the all-encompassing County of Alba, Romania. The goal was to see how the development and management policies from all levels merge into a single strategic framework that might create a favourable basis for the sustainable growth of Alba Iulia and its area of influence. As this area surrounding the city is subjected to different hierarchical plans and programmes, some that are not properly correlated, it is extremely clear that this area and Areas of Influence in general need legislative stipulations made specifically for them and also a well-thought holarchical planning approach.

  5. O projecto curricular de turma : da teoria à praxis

    OpenAIRE

    Simões, Helena Isabel Pereira Lucas

    2009-01-01

    Dissertação de Mestrado em Supervisão Pedagógica apresentada à Universidade Aberta A reflexão desenvolvida ao longo deste trabalho situa-se no âmbito da Reorganização Curricular do Ensino Básico e tem como cerne o desenvolvimento curricular e os processos de colaboração que são desenvolvidos em educação. O Currículo Nacional, orientado para o desenvolvimento de competências, propõe a construção de Projectos Curriculares visando adequá-los ao contexto de cada escola e de cada...

  6. Atividade antimicrobiana de Lippia alba (Mill. N. E. Brown (Verbenaceae Antimicrobial activity of Lippia alba (Mill. N. E. Brown (Verbenaceae

    Directory of Open Access Journals (Sweden)

    Jaciana S. Aguiar

    2008-09-01

    Full Text Available Lippia alba (Mill. N. E. Brown (Verbenaceae, amplamente distribuída em todo o território brasileiro, é conhecida popularmente como erva cidreira e utilizada na medicina popular como analgésica, febrífuga, antiinflamatória, antigripal e nas afecções hepáticas. Extratos brutos foram preparados a partir de plantas cultivadas, de modo padronizado, em horta medicinal do Laboratório de Fitoterapia da Empresa Pernambucana de Pesquisa Agropecuária (IPA para a verificação da atividade antimicrobiana, in vitro, pelo método de difusão em disco de papel. A concentração inibitória mínima (CIM foi determinada para os extratos que exibiram melhores atividades. Os resultados obtidos mostraram que os extratos clorofórmico, acetônico e etanólico da raiz foram ativos frente a Staphylococcus aureus, Micrococcus luteus, Bacillus subtilis, Mycobacterium smegmatis, Candida albicans e Monilia sitophila e os extratos hexânicos, etanólicos e metanólicos das folhas inibiram S. aureus, M. luteus, B. subtilis, M. smegmatis e M. sitophila. A menor concentração inibitória (CIM = 31,2 µg/mL, foi obtida para o extrato clorofórmico da raiz frente a B. subtilis e M. luteus.Lippia alba (Mill. N. E. Brown (Verbenaceae, commonly known as "erva cidreira", is widely distributed throughout Brazil and is used in folk medicine as an analgesic, anti-inflammatory, cold remedy, as well as to reduce fevers and treat hepatic afflictions. Crude extracts of L. alba were prepared from plants cultivated in the medicinal garden of the Laboratório de Fitoterapia of the Empresa Pernambucana de Pesquisa Agropecuária (IPA, State of Pernambuco, Brazil, using standard techniques to test their in vitro antibacterial activity using the paper disk-diffusion method. The minimum inhibitory concentration (MIC was determined for those extracts demonstrating the highest activity. The results demonstrated that the chloroform, acetone and ethanol extracts of root material were

  7. The antimicrobial activities of Ethanolic extracts of Basella alba on selected microorganisms

    OpenAIRE

    Oluwafemi Adebayo Oyewole; owolabi Azeez Kalejaiye

    2012-01-01

    The antimicrobial effects of ethanolic extract of Basella alba against Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, and Candida albican was determined using the agar cup plate method. The phytochemical components of the ethanolic extracts of the leaf and stem of B. alba showed the presence of tannin, terpene, steroid, saponin, anthraquinone, and with carbohydrate only in the stem extracts. The result of this study showed that all the organisms except Candida albican. were ...

  8. Hypocholesterolemic and Antiatherosclerotic Potential of Basella alba Leaf Extract in Hypercholesterolemia-Induced Rabbits

    OpenAIRE

    Gunasekaran Baskaran; Shamala Salvamani; Azrina Azlan; Siti Aqlima Ahmad; Swee Keong Yeap; Mohd Yunus Shukor

    2015-01-01

    Hypercholesterolemia is the major risk factor that leads to atherosclerosis. Nowadays, alternative treatment using medicinal plants gained much attention since the usage of statins leads to adverse health effects, especially liver and muscle toxicity. This study was designed to investigate the hypocholesterolemic and antiatherosclerotic effects of Basella alba (B. alba) using hypercholesterolemia-induced rabbits. Twenty New Zealand white rabbits were divided into 5 groups and fed with varying...

  9. THE ANTIMICROBIAL ACTIVITIES OF ETHANOLIC EXTRACTS OF BASELLA ALBA ON SELECTED MICROORGANISMS

    OpenAIRE

    Oyewole OA; Al-Khalil S; Kalejaiye OA

    2012-01-01

    Agar cup plate method was used to determine the antimicrobial effects of Basella alba against Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli and Candida albican. Ethanolic extracts of the leaf and stem of B. alba revealed the presence of tannin, terpene, steroid, saponin, anthraquinone, and with carbohydrate present only in the stem extracts. The result of this study showed that S. aureus, P. aeruginosa and E. coli were susceptible to 60mg/ml and 100mg/ml of the extract while...

  10. Improved Chemotherapeutic Activity by Morus alba Fruits through Immune Response of Toll-Like Receptor 4

    OpenAIRE

    Bo Yoon Chang; Seon Beom Kim; Mi Kyeong Lee; Hyun Park; Sung Yeon Kim

    2015-01-01

    Morus alba L. fruits have long been used in traditional medicine by many cultures. Their medicinal attributes include cardiovascular, hepatoprotective, neuroprotective and immunomodulatory actions. However, their mechanism of macrophage activation and anti-cancer effects remain unclear. The present study investigated the molecular mechanisms of immune stimulation and improved chemotherapeutic effect of M. alba L. fruit extract (MFE). MFE stimulated the production of cytokines, nitric oxide (...

  11. Cross-curricular integration of social sciences in the second grade of elementary school

    OpenAIRE

    Drobnič, Anja

    2012-01-01

    In this thesis, the two themes of social studies from slovenian and english cross-curricular coursewares were analyzed. There were also two different types of curriculum planning. One type is based on content and the other is based on processes of cross-curricular integration. Each type of curriculum planning contains different social science theme; nevertheless, both were designed according to current curricular base. It was determined that cross-curricular coursewares particularly rely u...

  12. Allelopathic influence of aqueous extracts from the leaves of Morus alba L. on seed germination and seedling growth of Cucumis sativus L. and Sinapsis alba L.

    Directory of Open Access Journals (Sweden)

    Katarzyna Możdżeń

    2014-04-01

    Full Text Available The aim of the present study was to elucidate impact of the aqueous extracts from leaves of Morus alba L. on germination, growth and photosynthetic activity of Cucumis sativus L. and Sinapis alba L. Plants were grown for 21 days at the temperature 25°C (day and 18°C (night, within 12/12 hours photoperiod, light intensity 150 μmol·m-2·s-1 and relative humidity 60-70% (day/night. Our experiments proved that allelopathic compounds in aqueous extracts of the leaves M. alba at high concentrations, reduce power and energy of germination. Biometric analysis of seedlings and adult plants grown showed that allelopathic substances have stimulating or inhibiting function depending on the stage of treatment. Moreover, they cause changes in chlorophyll contents and activity of photosystem II (PS II.

  13. Eclipta Alba as Corrosion Pickling Inhibitor on Mild Steel in Hydrochloric Acid

    Institute of Scientific and Technical Information of China (English)

    M. Shyamala; A. Arulanantham

    2009-01-01

    Due to ease of application, cost effectiveness and environmentally safe, in this study, the corrosion inhibition effect of aqueous extract of Eclipta alba in 1 N hydrochloric acid has been investigated by weight loss, potentiodynamic polarization and impedance methods and the extracts of Eclipta alba were found to be effective corrosion pickling inhibitor. The effect of immersion time and temperature revealed that the extracts of Eclipta alba with an optimum concentration of 8.0% v/v showed maximum inhibition efficiency of 99.6% at 3 h immersion time and 30℃. Arrhenius plots for mild steel immersed in 1 N HCI solution in the absence and presence of optimum concentration (8.0% in v/v) of Eclipta alba extract showed the effect of temperature. Polarization studies indicate that this plant extract acts as a mixed type inhibitor. The adsorption of Eclipta alba follows Langmuir adsorption isotherm. The inhibition action may be due to the presence of the Wedelactone and also the alkaloid Ecliptine present in the leaves of Eclipta alba.

  14. Hamline/3M Project: Liaison for Curricular Change

    Science.gov (United States)

    Rundquist, Andy

    2002-03-01

    This project was designed to catalyze curricular changes to better prepare students for the workplace. Industrial managers provided a list of 16 characteristics valued in the workplace: most were NOT related to science course content. The project formed 5 teams each including 3M professionals and students. Each team developed curricular changes in one of the 16 areas. Team goals were to improve skills in communication, data analysis, business/economics, team problem solving, and culture competency. Curricular changes realized include communication skill activities embodied in science courses and faculty communication teaching skill seminars, self learning tools in data analysis, statistics and model building, a new course developed with assistance from 3M personnel focussing on topics directly related to technological industries, high performance team problem solving training/coaching for faculty and workshops for students and faculty relative to importance of cultural competencies in the workplace, and a new course focusing on culture, team problem solving and conflict resolution in the technical workplace. Process for developing and content of curricular changes will be reported.

  15. Hamline/3M Corp. Project: Liason for Curricular Change*

    Science.gov (United States)

    Artz, Jerry L.

    2002-04-01

    This project was designed to catalyze curricular changes to better prepare students for the workplace. Industrial managers provided a list of 16 characteristics valued in the workplace; most were NOT related to science course content. The project formed 5 teams each including 3M professionals and students. Each team developed curricular changes in one of the 16 areas. Team goals were to improve skills in communication, data analysis, business/economics, team problem solving, and cultural competency. Curricular changes realized include communication skill activities embodied in science courses and faculty communication teaching skill seminars; self learning tools in data analysis, statistics and model building; a new course developed with assistance from 3M personnel focusing on topics directly related to technological industries; high performance team problem solving training/coaching for faculty; workshops for students and faculty relative to importance of cultural competencies in the workplace; and a new course focusing on culture, team problem solving and conflict resolution in the technical workplace. Process for developing and content of curricular changes will be reported. *Thanks to: NSF GOALI CHE-99010782

  16. American Association of Dental Schools Curricular Guidelines for Oral Radiology.

    Science.gov (United States)

    Journal of Dental Education, 1980

    1980-01-01

    Oral radiology curricular guidelines developed by the American Association of Dental Schools are provided. The guidelines describe minimal conditions under which a satisfactory educational experience can be offered. Principles of x-radiation, radiobiological concepts, radiological health, radiographic technique, radiographic quality, and darkroom…

  17. Can Music Professional Associations Build Capacity for Curricular Renewal?

    Science.gov (United States)

    Shieh, Eric

    2012-01-01

    The work of renewing curriculum in music education faces the inertia of current curricular practices and an education reform climate that is unfavorable toward such work. This article suggests that the development of music teacher agency is central to combating these challenges, and that the development of such agency relies on today's…

  18. Guided Play: Where Curricular Goals Meet a Playful Pedagogy

    Science.gov (United States)

    Weisberg, Deena Skolnick; Hirsh-Pasek, Kathy; Golinkoff, Roberta Michnick

    2013-01-01

    Decades of research demonstrate that a strong curricular approach to preschool education is important for later developmental outcomes. Although these findings have often been used to support the implementation of educational programs based on direct instruction, we argue that "guided play" approaches can be equally effective at delivering content…

  19. Retention of Economics Principles by Undergraduates on Alternative Curricular Structures

    Science.gov (United States)

    Johnson, Daniel K. N.; Lybecker, Kristina M.; Taylor, Corrine H.

    2011-01-01

    The authors investigated whether the curricular structure of an economics course (semester, trimester, or compressed block schedule) has an effect on an undergraduate's subsequent retention of course material, while controlling for other relevant differences. They tested separately for theoretical or process comprehension and for graphical…

  20. Curricular adaptation: alternatives of pedagogical support in the inclusive education

    Directory of Open Access Journals (Sweden)

    Lucia Pereira Leite

    2010-12-01

    Full Text Available The organization of the inclusive education is a slow and complex process, which has the necessity of investments in supports for all the scholar team. Aiming at spreading one of the actions carried out for the promotion of the inclusive educational practices in a municipal education system in a western city in the state of São Paulo, this paperwork has the objective of presenting an elaborated manual of orientations for the implementation of the individual curricular adaptations (ACIs for students who demand special educational necessities.(NEEs. The material was constituted on the basis of three data sets: 1 tabulation of the evaluations of the curricular adaptations already made; 2 the literature review; 3 analysis of the themes which have emerged during case discussion meetings mediated by the researchers with teachers from the Specialized Pedagogical Support Service (SAPE, with teachers and administrators from the common education system and the technical-pedagogical team. The final version of the manual contemplates the theoretical-operational aspects about the themes: flexibility and curricular adequation, inclusive education, definitions of NEEs, how SAPE works; and it finishes with a model proposal of ACI. It is expected that the spreading of this material can subside new curricular propositions for students with deficiency that are very distant from the academic level expected for the current scholar year.

  1. Enhancing and Enacting Curricular Progressions in Elementary Mathematics

    Science.gov (United States)

    Land, Tonia J.; Drake, Corey

    2014-01-01

    In this study, we examined how curricular resources supported three expert teachers in their enactment of progressions. Using a video-stimulated interview process, we documented the multiple types of progressions identified, described, and enacted by the teachers. Results indicate that the teachers used four different types of…

  2. Lessons from industry: one school's transformation toward "lean" curricular governance.

    Science.gov (United States)

    Stratton, Terry D; Rudy, David W; Sauer, Marlene J; Perman, Jay A; Jennings, C Darrell

    2007-04-01

    As medical education grapples with organizational calls for centralized curricular oversight, programs may be compelled to respond by establishing highly vertical, stacked governance structures. Although these models offer discrete advantages over the horizontal, compartmentalized structures they are designed to replace, they pose new challenges to ensuring curricular quality and the educational innovations that drive the curricula. The authors describe a hybrid quality-assurance (QA) governance structure introduced in 2003 at the University of Kentucky College of Medicine (UKCOM) that ensures centralized curricular oversight of the educational product while allowing individualized creative control over the educational process. Based on a Lean production model, this approach draws on industry experiences that strategically separate institutional accountability (management) for a quality curriculum from the decision-making processes required to ensure it (production). In so doing, the authors acknowledge general similarities and key differences between overseeing the manufacture of a complex product versus the education of a physician-emphasizing the structured, sequential, and measurable nature of each process. Further, the authors briefly trace the emergence of quality approaches in manufacturing and discuss the philosophical changes that accompany transition to an institutional governance system that relies on vigorous, robust performance measures to offer continuous feedback on curricular quality.

  3. Murder They Wrote. A Cross-Curricular Cooperative Learning Experience.

    Science.gov (United States)

    Gaither, Linda

    This document contains a cross-curricular cooperative learning experience that is designed to give high school students career and technical educational experiences in the areas of forensic sciences and criminalistics by doing the forensic work to "solve" a fictitious murder. The activities included in the cooperative learning experience are…

  4. Leadership Self-Efficacy in University Co-Curricular Programs

    Science.gov (United States)

    Fields, Andrew R.

    2010-01-01

    University educators are concerned with student leadership development in order to generate much-needed leaders in every aspect of society. This sequential mixed methods study found that students who participate in a university co-curricular outdoor education leadership training program, combined with the experience of leading a wilderness…

  5. Curricular Elements for Learner Success--21st Century Skills

    Science.gov (United States)

    Andrade, Maureen Snow

    2016-01-01

    Institutions of higher education are widening access to meet demand and to realize the benefits of an educated citizenry. Widened access has resulted in increased learner diversity, and consequently, differing expectations for teaching and learning. Achieving desired learning outcomes in this context suggests the need to examine curricular design,…

  6. History, Music and Law: Commemorative Cross-Curricularity

    Science.gov (United States)

    Woodcock, James

    2013-01-01

    James Woodcock continues his theme from "Teaching History 138" about the difference between superficial, thematic cross-curricularity and much more rigorous interdisciplinarity. His concern is to retain rather than compromise the integrity of the subject disciplines. Woodcock argues that interdisciplinary working adds value to learning…

  7. Promoting a Cross-Curricular Pedagogy of Risk

    Science.gov (United States)

    Kapadia, Ramesh

    2010-01-01

    This article reports on the findings of a research project whose aim was to support and enhance the teaching of risk at Key Stage 4. An innovative and cross-curricular approach has been used, based on modelling socio-scientific issues using new technological tools, designed specifically to enable the consideration of ethical and social issues,…

  8. Extra-Curricular Activities and Academic Performance in Secondary Students

    Science.gov (United States)

    Moriana, Juan Antonio; Alos, Francisco; Alcala, Rocio; Pino, Maria-Jose; Herruzo, Javier; Ruiz, Rosario

    2006-01-01

    Introduction: In this paper we study the possible influence of extra-curricular activities (study-related and/or sports) on academic performance of first- and second-year pupils in "Educacion Secundaria Obligatoria (ESO)" [N.T. seventh- and eighth-graders]. Method: We randomly selected 12 schools in the city (9 public and 3 private), and randomly…

  9. POLÍTICAS CURRICULARES NO BRASIL NOS GOVERNOS FHC E LULA: CONTINUIDADE?

    Directory of Open Access Journals (Sweden)

    Mariclei Przylepa

    2015-08-01

    Full Text Available O presente artigo objetiva problematizar as políticas curriculares elaboradas e efetivadas nos governos FHC e Lula, a partir do contexto de reforma de Estado materializada na década de 1990. Nessa direção o estudo inicia abordando a política curricular no contexto da reforma de Estado, evidencia a proposta educacional do governo FHC, discute sua política curricular, via parâmetros curriculares nacionais, e finaliza analisando a política curricular implementada no primeiro ano do governo Lula.

  10. Memory-enhancing activity of Rose alba in mice

    Directory of Open Access Journals (Sweden)

    Naikwade Nilofar

    2009-01-01

    Full Text Available Alzheimer′s disease (AD is a neurodegenerative disorder currently without an effective treatment. Impairment of memory is the initial and most significant symptom of AD. Memantine is the first novel class of AD medications acting on the glutaminergic system and produces symptomatic improvement in learning. Nootropic agents such as piracetam, aniracetam, and choline esterase inhibitors like donepezil are being used to improve memory, mood, and behavior, but the resulting side-effects associated with these agents have made their use limited. The present study was undertaken to investigate the effects of Rose alba (RA on learning and memory in mice. Male Swiss albino mice (3 months old weighing around 25 g were employed in the present investigation. Elevated plus-maze and passive-avoidance apparatus served as the exteroceptive behavioral models, and diazepam-induced amnesia served as the interoceptive behavioral models. RA (100 and 200 mg/kg p.o. was administered for eight successive days to the mice. Piracetam (200 mg/kg i.p. was used as a standard nootropic agent. RA improved learning and memory of mice as indicated by decreased transfer-latency and increased step-down latency. RA significantly reversed the amnesia induced by diazepam (1 mg/kg, i.p.. The results indicate that the aqueous extract of calyces of RA might prove to be a useful memory restorative agent in the treatment of cognitive disorders.

  11. Evaluation of hepatoprotective activity of aqueous extracts of leaves of Basella alba in albino rats.

    Science.gov (United States)

    Das, Saibal; Bandyopadhyay, Sanjib; Ramasamy, Anand; Mondal, Somnath

    2015-01-01

    This study was done to evaluate possible hepatoprotective effects of aqueous leaf extracts of Basella alba in comparison with silymarin in paracetamol-induced hepatotoxicity in albino rats. Six groups of six albino rats each received orally for 6 weeks, vehicle, paracetamol (2 g/kg/day), paracetamol (2 g/kg/day) plus silymarin (50 mg/kg/day), paracetamol (2 g/kg/day) plus B. alba extract (60 mg/kg/day), paracetamol (2 g/kg/day) plus B. alba extract (80 mg/kg/day) and paracetamol (2 g/kg/day) plus B. alba extract (100 mg/kg/day). Hepatoprotective effect was evaluated by comparing serum bilirubin, serum glutamic oxaloacetic transaminase, serum glutamic pyruvic transaminase, proteins, alkaline phosphatase and liver histopathology. Results were represented as mean ± SEM. One-way ANOVA was done followed by post hoc Tukey's test with a highly significance level of P alba 100 mg/kg/day orally had significant hepatoprotective effect in paracetamol-induced hepatotoxicity in albino rats. The results were well comparable and even in some respects superior to standard drug silymarin. PMID:25347929

  12. Colonization with Arbuscular Mycorrhizal Fungi Promotes the Growth of Morus alba L. Seedlings under Greenhouse Conditions

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    Nan Lu

    2015-03-01

    Full Text Available Morus alba L. is an important tree species planted widely in China because of its economic value. In this report, we investigated the influence of two arbuscular mycorrhizal fungal (AMF species, Glomus mosseae and Glomus intraradices, alone and together, on the growth of M. alba L. seedlings under greenhouse conditions. The growth parameters and physiological performance of M. alba L. seedlings were evaluated 90 days after colonization with the fungi. The growth and physiological performance of M. alba L. seedlings were significantly affected by the AMF species. The mycorrhizal seedlings were taller, had longer roots, more leaves and a greater biomass than the non-mycorrhizae-treated seedlings. In addition, the AMF species-inoculated seedlings had increased root activity and a higher chlorophyll content compared to non-inoculated seedlings. Furthermore, AMF species colonization increased the phosphorus and nitrogen contents of the seedlings. In addition, simultaneous root colonization by the two AMF species did not improve the growth of M. alba L. seedlings compared with inoculation with either species alone. Based on these results, these AMF species may be applicable to mulberry seedling cultivation.

  13. EFFECT OF TEMPERATURE ON THE BIOLOGY OF TUBEROLACHNUS SALIGNUS (GMELIN (STERNORRHYNCHA: APHIDIDAE ON (SALIX ALBA

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    Nıhal ÖZDER

    2008-07-01

    Full Text Available The development time, survivoship and reproduction of Tuberolachnus salignus (Gmelin( Lachninae: Lachnini were studied on Salix alba at fi ve constant temperatures (17.5°C, 20°C, 22.5°C, 25°C and 27.5°C . The developmental time of immature stages ranged from 17.00 days at 17.5°C to 12.21 days at 25°C on Salix alba. The total percentage of survivorship of immature stages varied from 50% and 70% 17.5°C -20°C on S. alba. The largest r m valueoccurred with 0.2540 at 20°C on S. alba. The mean generation time of the population ranged from 13.595 days at 22.5°C to 19.60 days at 17.5°C on S. alba. The optimal temperature for Tuberolachnus salignus was 20°C.

  14. ANTIBACTERIAL ACTIVITY AND PHYTOCHEMICAL SCREENING OF LEAVES AND STEM EXTRACTS OF AVICENNIA ALBA BLUME

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    Nagababu, P

    2012-12-01

    Full Text Available The present work was attempted to study the Antibacterial activity and phytochemical analysis of Mangrove plant Avicennia alba. Leaf and stem extracts of A. alba were prepared in Hexane, Benzene, Chloroform, Ethyl acetate, Acetone and Methanol solvents. The resulted extracts of the plant were screened for antibacterial activity against Micrococcus luteus MTCC 106, Arthrobacter protophormiae MTCC 2682, Rhodococcus rhodochrous MTCC 265, Alcaligens faecalis MTCC 126, Proteus- mirabilis MTCC 425, Enterobacter aerogenes MTCC 10208, Proteus vulgaris MTCC 426, Bacillus megaterium MTCC 428, Enterococcus faecalis MTCC 439, Streptococcus mutans- MTCC 497, Salmonella enterica MTCC 3858, Staphylococcus aureus MTCC 737, Pseudomonas aeruginosa MTCC 1688 and Bacillus subtilis MTCC 441. The extracts were also screened for phytochemicals like Carbohydrates, Tannins, Steroids, Terpenoids, Saponins, Flavanoids, Alkaloids and Soluble starch. Of the six solvent extracts of A. alba, ethyl acetate and acetone extracts of leaf and stem, with few exceptions, showed relatively high antibacterial activity. Benzene and chloroform extracts of A. alba showed a larger zone of inhibition against Salmonella enterica than other bacteria. A. alba leaf and stem extracts of different solvents showed good antibacterial activity against Gram negative bacteria than the Gram positive bacteria tested. Most of the solvent extracts of leaf and stem are effective on many bacteria tested than the positive control. The acetone and methanol extracts of leaf and stem showed maximum positive results towards the phytochemical constituents.

  15. Immunomodulatory activity of methanolic extract of Morus alba Linn. (mulberry) leaves.

    Science.gov (United States)

    Bharani, Shendige Eswara Rao; Asad, Mohammed; Dhamanigi, Sunil Samson; Chandrakala, Gowda Kallenahalli

    2010-01-01

    The leaves of Morus alba Linn. (Family: Moraceae) commonly known as mulberry are mainly used as food for the silkworms and they are sometimes eaten as vegetable or used as cattle fodder in different parts of the world. The effect of Morus alba on the immune system was evaluated by using different experimental models such as carbon clearance test, cyclophosphamide induced neutropenia, neutrophil adhesion test, effect on serum immunoglobulins, mice lethality test and indirect haemagglutination test. Methanolic extract of Morus alba was administered orally at low dose and high dose of 100 mg/kg and 1 g/kg respectively and Ocimum sanctum (100 mg/kg, po) was used as standard drug. Morus alba extract in both doses increased the levels of serum immunoglobulins and prevented the mortality induced by bovine Pasteurella multocida in mice. It also increased the circulating antibody titre in indirect haemagglutination test. On the other hand, it showed significant increase in the phagocytic index in carbon clearance assay, a significant protection against cyclophosphamide induced neutropenia and increased the adhesion of neutrophils in the neutrophil adhesion test. Hence, it was concluded that Morus alba increases both humoral immunity and cell mediated immunity.

  16. Praxis educativa ecopacifista de enriquecimiento curricular: Conceptuacion, diseno y divulgacion

    Science.gov (United States)

    Osorio, Carlos Agustin Muniz

    A general consensus exists that the present worldwide state of the natural environment is in crisis. Tied to this crisis, the social dimension presents a discouraging picture in aspects like violence and poverty. The predominant neoliberal economic system---ecocidal and genocidal---just as the production system that sustains it, affects this crisis. Puerto Rico, in its political and economic relationship with the United States of America, is not exempt of this situation. Education arises as an alternative to transform this reality. Science education has the potential to address these socio-environmental problems in a creative way. From a scientific educational framework, we conceptualized, designed and disseminated diverse approaches and tools that integrate socio-ecological and environmental aspects, as well as issues related to violence, conflict and peace. The central research questions were: At present, what are some of the main characteristics of the social-ecological and environmental global and local (glocal) issues and what relation do they have with formal education?; What is the ethical responsibility of science education when, facing social-ecological and environmental situations and issues concerning peace?; What educational foundations justify the "Praxis Educativa Ecopacifista de Enriquecimiento Curricular" as an alternative to the situations and issues considered?; What didactic tools do we propose?; What curricular design and revision processes do we propose? What dissemination processes do we propose? The nature of our methodology is qualitative and is centered around curricular design. It includes a research-theoretical dimension, a practical-research dimension, and systematizing of learning elements. We emphasize the conceptualization of the theoretical-philosophical and methodological dimensions of the ecopacifist approach and its fundamental principles. We highlight the praxis, integrating creativity, intelligence and talent development

  17. Nicaragua Re-Visited: From Neo-Liberal "Ungovernability" to the Bolivarian Alternative for the Peoples of Our America (ALBA)

    Science.gov (United States)

    Muhr, Thomas

    2008-01-01

    In this paper I conduct a historical analysis of the emergence of ALBA in Nicaragua prior to Daniel Ortega's return to the presidency and the country's official membership in the initiative from January 2007 on. I argue that ALBA is a rival structure that evolved from the contradictions inherent in hegemonic globalisation. Within the framework of…

  18. Flour from Prosopis alba cotyledons: A natural source of nutrient and bioactive phytochemicals.

    Science.gov (United States)

    Cattaneo, F; Costamagna, M S; Zampini, I C; Sayago, J; Alberto, M R; Chamorro, V; Pazos, A; Thomas-Valdés, S; Schmeda-Hirschmann, G; Isla, M I

    2016-10-01

    The Prosopis alba seed is a waste material in the process to produce pod flour. To suggest a potential use of these seeds it is necessary to determine the nutritional, phytochemical and functional quality of cotyledon flour from Prosopis alba. This flour showed high level of proteins (62%), low content of total carbohydrate and fat. Free polyphenol (1150±20mg GAE/100g flour) and carotenoids (10.55±0.05mg β-CE/100g flour) compounds were the dominant compounds. The main identified constituents in the polyphenolic extracts were C- glycosyl flavones, including schaftoside, isoschaftoside, vicenin II, vitexin and isovitexin. The extract enriched in polyphenolic compounds exhibited ABTS(+) reducing capacity and scavenging activity of H2O2; and was able to inhibit phospholipase, lipoxygenase and cyclooxygenase, three pro-inflammatory enzymes. According to our results, the P. alba cotyledon flour could be considered as a new alternative in the formulation of functional foods or food supplements.

  19. Invitro Antioxidant and Free Radical Scavenging Activity of Aqueous and Ethanolic Flower Extract of Nymphaea Alba

    Directory of Open Access Journals (Sweden)

    MADHUSUDHANAN N

    2011-06-01

    Full Text Available Nymphaea alba also known as the European White Waterlily, White Lotus or Nenuphar, is an aquatic flowering plant of the family Nymphaeaceae. The flowers are white and they have many small stamens inside. It contains the active alkaloids nupharine and nymphaeine, and is a sedative and an aphrodisiac/an aphrodisiac.In this study, the antioxidant activity of aqueous and ethanolic extracts from flower of Nymphaea alba was evaluated by various antioxidant assays including total antioxidant, hydrogen peroxide scavenging and nitric oxide scavenging activities. Both extracts have exhibited significant antioxidant activity in DPPH, Nitric oxide and Hydroxyl radical induced invitro assay methods. The results indicate that both the extracts firmly possess strong antioxidant effects .Comparatively the ethanolic flower extract showed more antioxidant activity than the aqueous extracts. The results obtained from the present study indicate that the Nymphaea alba flower extract can be a potential source of natural antioxidant

  20. [Proof of the indigenous nature of Populus alba L. in the western Mediterranean Basin].

    Science.gov (United States)

    Roiron, Paul; Ali, Adam A; Guendon, Jean-Louis; Carcaillet, Christopher; Terral, Jean-Frédéric

    2004-02-01

    Around the western Mediterranean Basin, the ecological status of Populus alba, whether indigenous or introduced, is controversial. This note presents new palaeobotanical data based on analyses of leaf imprints from a travertine formation located in southern France. This travertine presents two levels with Populus alba imprints. The oldest level is dated back by 14C to the Early Holocene, i.e., 8890 +/- 70 BP. This demonstrates that Populus alba is an autochthonous species of the southern-France vegetation, removing speculations reporting that its distribution area was greatly influenced by Roman civilization. Finally, we discuss this new data in regard to other Pleistocene and Holocene deposits circum the Mediterranean Basin and in Europe, where this species was identified. PMID:15060983

  1. THEORY AND METHOD IN INTERCULTURAL CURRICULAR DESIGN FOR SKILLS

    Directory of Open Access Journals (Sweden)

    José Ángel Vera Noriega

    2007-08-01

    Full Text Available SUMMARYThe objective of this document is to present both the metatheorical principles of interculturality that underlies the intercultural pedagogic model for higher education, and describes the characteristics of educative model and finally to present the pattern of curricular construction by skills in Intercultural Universities that can eulogize the density and by the other side position the students with skills to obtain levels of excellence in certification tests and profession in conditions to be approved in their accreditation.

  2. Human Rights Education and Curricular Reform in South Africa

    OpenAIRE

    Andre Keet; Nazir Carrim

    2006-01-01

    In this paper we chronicle the development of Human Rights Education (HRE) in South Africa within contemporary structures and processes of curricular reform in the country. We argue that human rights have been constituted as a discursive regime within education that traverses all education policy texts: laws, white papers, guidelines, recommendations and regulations. As such it has found a distinct expression in the new schools' curricula for General Education and Training (GET) and Further E...

  3. THEORY AND METHOD IN INTERCULTURAL CURRICULAR DESIGN FOR SKILLS

    OpenAIRE

    José Ángel Vera Noriega

    2007-01-01

    SUMMARYThe objective of this document is to present both the metatheorical principles of interculturality that underlies the intercultural pedagogic model for higher education, and describes the characteristics of educative model and finally to present the pattern of curricular construction by skills in Intercultural Universities that can eulogize the density and by the other side position the students with skills to obtain levels of excellence in certification tests and profession in conditi...

  4. Diretrizes Curriculares de Enfermagem: GOVERNANDO CORPOS DE ENFERMEIRAS

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    Fernanda Niemeyer

    2010-01-01

    Full Text Available Directrices Curriculares objetivan la organización de cursos y carreras para la constitución de identidades profesionales. En este sentido, las Directrices Curriculares Nacionales para la Enseñanza de Grado en Enfermería definen los fundamentos para la formación de enfermeras en el país, apuntando al tipo de conocimiento considerado importante en la profesión. Nos apoyamos en los presupuestos de la obra de Michel Foucault para realizar un análisis textual de los discursos difundidos por las Directrices Curriculares de Enfermería, problematizándolos como una estrategia de gobernar y de hacer subjetivo que actúa sobre los cuerpos de las futuras enfermeras. Las reflexiones apuntan a un documento que se puede ver como un instrumento que pretende normalizar a las alumnas y constituirlas para que se vuelvan enfermeras. Así se define el perfil de la "buena" y de la "mala" profesional, sistematizando los cuerpos y sus actitudes, sin permitirles que piensen y que hagan las cosas de otro modo e instituyendo un "régimen de verdades" que produce cierto tipo de enfermera.

  5. Purification and biochemical characterization of phytocystatin from Brassica alba.

    Science.gov (United States)

    Ahmed, Azaj; Shamsi, Anas; Bano, Bilqees

    2016-05-01

    Phytocystatins belong to the family of cysteine proteinases inhibitors. They are ubiquitously found in plants and carry out various significant physiological functions. These plant derived inhibitors are gaining wide consideration as potential candidate in engineering transgenic crops and in drug designing. Hence it is crucial to identify these inhibitors from various plant sources. In the present study a phytocystatin has been isolated and purified by a simple two-step procedure using ammonium sulfate saturation and gel filtration chromatography on Sephacryl S-100HR from Brassica alba seeds (yellow mustard seeds).The protein was purified to homogeneity with 60.3% yield and 180-fold of purification. The molecular mass of the mustard seed cystatin was estimated to be nearly 26,000 Da by sodium dodecyl sulfate polyacrylamide gel electrophoresis as well as by gel filtration chromatography. The stokes radius and diffusion coefficient of the mustard cystatin were found to be 23A° and 9.4 × 10(-7)  cm(2) s(-1) respectively. The isolated phytocystatin was found to be stable in the pH range of 6-8 and is thermostable up to 60 °C. Kinetic analysis revealed that the phytocystatin exhibited non-competitive type of inhibition and inhibited papain more efficiently (K(i)  = 3 × 10(-7)  M) than ficin (K(i)  = 6.6 × 10(-7)  M) and bromelain (K(i) = 7.7 × 10(-7)  M respectively). CD spectral analysis shows that it possesses 17.11% alpha helical content. PMID:26748819

  6. WINE ROAD - AN INSTRUMENT FOR THE VALORISATION OF WINE TOURISM POTENTIAL CASE STUDY: ALBA COUNTY VINEYARDS

    OpenAIRE

    UNGUREANU Mihaela

    2015-01-01

    The main aim of this study is to highlight the wine-growing and wine-making potential of Alba County and the way it can be valorised. Alba county has a rich winegrowing and wine-making heritage, a fact which is due to the long-standing tradition of winegrowing on these area, as well as to the characteristics of the natural factors (relief, geology, climate, soil), favourable for obtaining high-quality wines, the reputation of which has been acquired at national and international competitions....

  7. Radical Scavenging Activity of the Essential Oil of Silver Fir (Abies alba)

    OpenAIRE

    Yang, Seun-Ah; Jeon, Sang-Kyung; Lee, Eun-Jung; Im, Nam-Kyung; Jhee, Kwang-Hwan; Lee, Sam-Pin; Lee, In-Seon

    2009-01-01

    The essential oil of silver fir (Abies alba) is known to help respiratory system and have easing and soothing effect for muscle. In the present study, we investigated the chemical composition, cytotoxicity and its biological activities of silver fir (Abies alba) essential oil. The composition of the oil was analyzed by GC-MS and bornyl acetate (30.31%), camphene (19.81%), 3-carene (13.85%), tricyclene (12.90%), dl-limonene (7.50%), α-pinene (2.87%), caryophyllene (2.18%), β-phellandrene (2.13...

  8. Sucedáneo del café a partir de algarroba (prosopis alba griseb).

    OpenAIRE

    PROKOPIUK, DANTE BASILIO

    2008-01-01

    Prosopis alba Griseb (algarrobo blanco) es una leguminosa arbórea que crece naturalmente en el Chaco argentino. Los frutos o algarrobas son dulces y tienen un apreciable valor proteico, por ello son utilizadas en la alimentación humana y animal, principalmente secas y molidas o en forma de extractos acuosos. El objetivo de este trabajo de tesis doctoral fue desarrollar un sucedáneo de café a partir de la algarroba de Prosopis alba Griseb. Para ello, se tostaron las algarrobas a seis temperatu...

  9. Predazione di Chirotteri da parte del Barbagianni (Tyto alba in Italia

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    Edoardo Vernier

    1994-05-01

    Full Text Available Abstract Predation of Bats by the Barn Owl (Tyto alba in Italy - The examination of Barn Owl (Tyto alba pellets collected in northern Italy (Lombardia region, PO valley has revealed the presence of a number much higher than usual (0.03-0.26% of bat remains (2.37%. Enclosed is a tentative explanation of the relatively high frequence of the presence of bats of the genus Pipistrellus in Barn Owl pellets.

  10. Predazione di Chirotteri da parte del Barbagianni (Tyto alba) in Italia

    OpenAIRE

    Edoardo Vernier

    1994-01-01

    Abstract Predation of Bats by the Barn Owl (Tyto alba) in Italy - The examination of Barn Owl (Tyto alba) pellets collected in northern Italy (Lombardia region, PO valley) has revealed the presence of a number much higher than usual (0.03-0.26%) of bat remains (2.37%). Enclosed is a tentative explanation of the relatively high frequence of the presence of bats of the genus Pipistrell...

  11. Antioxidant and neurosedative properties of polyphenols and iridoids from Lippia alba.

    Science.gov (United States)

    Hennebelle, Thierry; Sahpaz, Sevser; Gressier, Bernard; Joseph, Henry; Bailleul, François

    2008-02-01

    The neurosedative and antioxidative properties of some major compounds isolated from a citral chemotype of Lippia alba were investigated. Binding assays were performed on two CNS inhibitory targets: benzodiazepine and GABA(A) receptors. The most active compound was luteolin-7-diglucuronide, with half maximal inhibitory concentrations (IC(50)) of 101 and 40 microm, respectively. Fifteen compounds isolated from Lippia alba were tested for their radical scavenging capacities against DPPH. Four of the major compounds (verbascoside, calceolarioside E, luteolin-7-diglucuronide and theveside) were also tested for their antioxidant activity against superoxide radical-anion in cell-free (hypoxanthine-xanthine oxidase) and cellular (PMA-stimulated neutrophil granulocytes) systems. PMID:17705148

  12. Estética da sensibilidade como princípio curricular Aesthetics of sensibility as a curricular principle

    OpenAIRE

    Rose Meri Trojan

    2004-01-01

    O fato de que a estética constitua um dos princípios norteadores da organização curricular no Brasil impõe-nos uma reflexão sobre a concepção que a fundamenta e justifica. Para isso, situamos o princípio estético nos documentos normativos que definem e explicitam as atuais diretrizes curriculares nacionais para a educação básica. Indicamos os fundamentos que definem a concepção de estética adotada e suas relações com a ética e a política, que compõem a trilogia que deve orientar as práticas e...

  13. Estética da sensibilidade como princípio curricular Aesthetics of sensibility as a curricular principle

    Directory of Open Access Journals (Sweden)

    Rose Meri Trojan

    2004-08-01

    Full Text Available O fato de que a estética constitua um dos princípios norteadores da organização curricular no Brasil impõe-nos uma reflexão sobre a concepção que a fundamenta e justifica. Para isso, situamos o princípio estético nos documentos normativos que definem e explicitam as atuais diretrizes curriculares nacionais para a educação básica. Indicamos os fundamentos que definem a concepção de estética adotada e suas relações com a ética e a política, que compõem a trilogia que deve orientar as práticas educacionais, a fim de evidenciar as intenções que se abrigam em torno da estética da sensibilidade, revelando sua funcionalidade no atual estágio de desenvolvimento do modo de produção capitalista.The fact that aesthetics is one of the guiding principles for curricular organization in Brazil forces us to reflect upon its founding and justifying concept. To this end, we situate the aesthetic principle in the regulatory documents which define and detail the current national curricular guidelines for primary education. We also indicate the foundations that define the aesthetic concept adopted and its relationship with ethics and politics, which are the three pillars that should guide educational practices. Thus, we intend to highlight the purposes involved in the aesthetics of sensibility, revealing its function in the present development stage of the capitalist production mode.

  14. Alba Nemesis Alba Nemesis

    Directory of Open Access Journals (Sweden)

    Irene Maria Dietschi

    2008-04-01

    Full Text Available The China Poems seem to be a cycle, because they comprise a period of nine years, from 1969 to 1978. Carol Berge portrays the Chinese world in the States, the shock of two cultures the encounter of East and West, of dark and bright. mysteryand clarity. East and West are painted as Siamese twins, Chang and Eng, as a unit, "connected by more than flesh." Although a unit, the twins are individuals, with an individual life. The world , here is seen as a unit, there are differences, there are East and West, but there is also a common denominator which connects differences - halves - which can be called the human condition . The Chinese immigrants, in their condition of newcomers , suffer the process of an unavoidable adaptation, the common conflict of strangers in an extraneous homeland. "Chinese mur miming Buddhist liturgies carelessly translated from Latin versions of the same repressive history."

  15. Student diversity, extra-curricular activities and perceptions of graduate outcomes

    OpenAIRE

    Stuart, Mary; Lido, Catherine; Morgan, Jessica; May, Steve

    2009-01-01

    This research will examine how different student groups engage with extra-curricular activities and what effect these activities have on their degree and graduate outcomes. Recent research has indicated that different student groups have different degree and employment outcomes, this research examines how different student groups engage with extra-curricular activities and what effect these activities have on their degree and graduate outcomes. It examines what extra-curricular activi...

  16. Venezuela e ALBA: regionalismo contra-hegemônico e ensino superior para todos Venezuela and the ALBA: counter-hegemonic regionalism and higher education for all

    Directory of Open Access Journals (Sweden)

    Thomas Muhr

    2010-08-01

    Full Text Available Partindo de um quadro teórico neo-gramsciano crítico à globalização, este artigo aplica a nova teoria do regionalismo (NTR e a teoria do regionalismo regulatório (TRR à sua análise e teorização dos tratados de comércio da Aliança Bolivariana para os Povos da Nossa América (ALBA-TCP como regionalismo contra-hegemônico na América Latina e Caribe (ALC. A ALBA está centrada na ideia de um Socialismo do Século XXI, que, como (inicialmente também a Revolução Bolivariana da Venezuela, substitui a 'vantagem competitiva' pela 'vantagem cooperativa'. Em seu caráter de conjunto de processos multidimensionais e transnacionais a ALBA-TCP opera dentro de/transversalmente a um número de setores e escalas, ao mesmo passo que as transformações estruturais são movidas pela interação de agentes do Estado e agentes não estatais. A política de Educação Superior para Todos (ESPT do governo venezuelano rejeita a agenda neoliberal globalizada de mercadorização, privatização e elitismo e reinvindica educação pública gratuita em todos os níveis como um direito humano fundamental. A ESPT está sendo regionalizado em um espaço educacional emergente da ALBA e assume um papel-chave nos processos de democracia direta e participatória, dos quais a construção popular (bottom-up da contra-hegemonia e a redefinição política e econômica da ALC dependem. Antes de produzir sujeitos empreendedores conformes ao capitalismo global, a ESPT procura formar subjetividades ao longo de valores morais de solidariedade e cooperação. Isso será ilustrado com referência a um estudo etnográfico de caso da Universidade Bolivariana da Venezuela (UBV.This paper employs new regionalism theory and regulatory regionalism theory in its analysis and theorisation of the Bolivarian Alliance for the Peoples of Our America (ALBA as a counter-hegemonic Latin American and Caribbean (LAC regionalism. As (initially the regionalisation of Venezuela's Bolivarian

  17. LA PALABRA DIBUJADA. ANTONIO FERNÁNDEZ-ALBA, PRIMER Y ÚLTIMO MAESTRO / The drawn word. Antonio Fernández-Alba, first and last master

    Directory of Open Access Journals (Sweden)

    Juan Luis Trillo de Leyva

    2015-05-01

    Full Text Available Távora y Fernández-Alba son figuras de referencia ineludible para quienes quieran hoy investigar el origen contemporáneo de la arquitectura peninsular y, sobre todo, de sus escuelas. Alba fue siempre una guía para los que abordamos una enseñanza alejados del aura que acompañaba a los grandes arquitectos madrileños y barceloneses. Su experimentación didáctica alteró la trayectoria de las escuelas de arquitectura españolas. Introdujo la cultura contemporánea en la universidad como si se tratara de una segunda naturaleza, de un nuevo estrato territorial de los proyectos, manteniendo al hombre como objeto central y destinatario de todo proceso proyectual. En época de virtualidad y representación automatizada, nada más adecuado que la revisión de los dibujos del maestro Fernández-Alba. Dibujos que requieren ser proyectados, pensados, antes que ejecutados, “proyectos de proyectos”, una especie de tautología que rige la mente del poeta en su continua reducción, compresión o destilación, gota a gota, del mundo real, del universo y la palabra.

  18. The antimicrobial activities of Ethanolic extracts of Basella alba on selected microorganisms

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    Oluwafemi Adebayo Oyewole

    2012-11-01

    Full Text Available The antimicrobial effects of ethanolic extract of Basella alba against Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, and Candida albican was determined using the agar cup plate method. The phytochemical components of the ethanolic extracts of the leaf and stem of B. alba showed the presence of tannin, terpene, steroid, saponin, anthraquinone, and with carbohydrate only in the stem extracts. The result of this study showed that all the organisms except Candida albican. were susceptible to 60mg/ml and 100mg/ml. of extract. The minimum inhibitory concentration (MIC and minimum bactericidal concentration (MBC were also determined. The result obtained showed that the MIC and MBC for the ethanolic extract of the leaf and stem of P. aeruginosa, E. coli was 50mg/ml, while the MIC and MBC of S. aureus was 100mg/ml for the ethanolic extract of the leaf and stem of B. alba. The result of this study suggests that the ethanolic extracts of B. alba could be suitable for the treatment of diseases caused by S. aureus, P. aeruginosa and E. coli.

  19. Biodiesel from Meadowfoam (Limnanthes alba L.) Seed Oil: Exceptional Oxidative Stability and Unusual Fatty Acid Composition

    Science.gov (United States)

    Meadowfoam (Limnanthes alba L.) seed oil methyl esters (MFME), prepared by a standard transesterification procedure using methanol and sodium methoxide catalyst from refined meadowfoam oil (MFO), were evaluated as a potential biodiesel fuel. MFME contains the unusual 5(Z)-eicosenoate (64.2 wt %) an...

  20. Una receta de tinta de escritura procedente del Archivo de la Casa de Alba

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    Teresa María Criado Vega

    2015-12-01

    Full Text Available Archive of the house of Alba keeps a file on your prescription black ink mode of metalogalics. Throughout this work, we have studied the materials and processes as well as Castilian been collated with several recipes, and coeval with the same theme, as reflected in various Castilian recipes deposited on different backgrounds.

  1. Wood Anatomical Structure of Morus alba L. and Morus nigra L., Native to Iran

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    Elham KARAMI

    2010-12-01

    Full Text Available Iran is a wast country with many different tree species. Among those there are two species of Morus genus including alba and nigra. Since long time ago, white mulberry�s wood (Morus alba has been used for making musical instruments especially bowl shaped instruments in Iran.. In contrast, black mulberry�s wood (Morus nigra has never been used for these types of applications. In order to investigate the possible replacement choices, this study has been carried out to investigate the anatomical differences and similarities between these two species. Wood samples of the two species have been collected from same site and microsections for light microscopic studies and maceration samples have been prepared. The anatomical characteristics were studied according to the IAWA List of Hardwoods. The most important similarities between them are: vessel solitary in short radial multiples or irregular clusters, fiber nonseptate, rays uniseriate and multiseriate type, paratracheal parenchyma, varying from vasicentric to aliform confluent, apotracheal as marginal bands, Rhombic crystals present in rays and sometimes in parenchyma. The main differences are: semi-ring porous distribution of vessels in M. alba, fewer number of vessels and presence of aliform parenchyma in M. nigra. Taking these results into consideration, the most important features of both species are similar and it could be recommended to use the nigra species as well as the alba for making musical instruments.

  2. Syringa oblata Lindl var. alba as a source of oleuropein and related compounds

    NARCIS (Netherlands)

    Nenadis, N.; Vervoort, J.J.M.; Boeren, J.A.; Tsimidou, M.Z.

    2007-01-01

    The leaf methanol extract of Syringa oblata Lindl var. alba was investigated as a source of oleuropein and related compounds. The extract had a high total phenol content and a radical scavenging activity similar to that of the respective extract from Olea europaea leaves. HPLC-DAD characterisation o

  3. MOLA Topographic Constraints on Lava Tube Effusion Rates for Alba Patera, Mars

    Science.gov (United States)

    Riedel, S. J.; Sakimoto, S. E. H.

    2002-01-01

    Using high resolution MOLA (Mars Orbiter Laser Altimeter) topographic data to accurately model flow rates, we find that Alba Patera tube-fed flows within the mid to lower flanks could accommodate flow rates between 10 Pa s to 1.308 x 10(exp 6) Pa s. Additional information is contained in the original extended abstract.

  4. CARDIOPROTECTIVE EFFECT OF MORUS ALBA L. LEAVES IN ISOPRENALINE INDUCED RATS

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    S. Madhumitha and A. Indhuleka*

    2012-05-01

    Full Text Available The study was designed to evaluate the cardioprotective effect of methanolic extract of Morus alba L. leaves against isoprenaline- induced myocardial infarction and was investigated by an in vivo method in rats. Male Wistar albino rats were divided into four groups (n=6. Group I rats served as normal control. Group II rats served as isoprenaline induced toxic control (110 mg/kg body weight which was injected intraperitoneally (i.p. for two consecutive days (14th and 15th days. Group III rats were given Morus alba intragastric intubation (500 mg/kg body weight for 15 days. Group IV rats were also given Morus alba as in Group III and additionally isoprenaline was given for two consecutive days (14th and 15th days.The results described the cardioprotective effect that was observed in Group IV which showed a significant (P< 0.05 decreased levels of TBARS and enhanced the activities of both enzymatic and non-enzymatic antioxidants (SOD, CAT, GPx and GSH in myocardial infarcted rats when compared to Groups II and III. In serum, the biomarkers (LDH, CK activities were significantly (P< 0.05 increased in Group II compared to pretreated Group IV. Histopathological studies were also co-relating with the above biochemical parameters. These findings concluded the cardioprotective effect of Morus alba on lipid peroxidation and antioxidant defense system during isoprenaline -induced myocardial infarction in rats.

  5. ALBA, organisation interaméricaine ou vénézuélienne ?

    Directory of Open Access Journals (Sweden)

    Jean-Jacques Kourliandsky

    2011-01-01

    Full Text Available L’«Alliance Bolivarienne des peuples de notre Amérique», ou ALBA, est de toutes les organisations interaméricaines celle dont l’identité est la plus originale. S’affirmant anti-impérialiste elle donne en effet à l’idéologie une place centrale qui commande la coopération entre ses membres. Mais l’ALBA au quotidien diffère-t-elle d’autres organisations d’intégration ? Le lien entre les différents pays qui la composent n’est-il pas au-delà de l’hommage unanime rendu à Bolivar bien davantage celui de pouvoir bénéficier du pétrole vénézuélien à un prix préférentiel ? L’ALBA, comme d’autres institutions latino-américaines, ne répond-elle pas à l’ambition d’un État, en l’occurrence ici le Venezuela, plus qu’à celle de construire un projet collectif pérenne? Ce lien entre le pétrole de son initiateur vénézuélien et l’ALBA, est une garantie pour le présent. Mais l’ALBA survivrait-elle à une alternance politique au Venezuela, ou à une chute des prix du baril affectant le nerf de l’organisation ?

  6. Developing global leaders through doctoral education El desarrollo de liderazgos globales mediante la educación de doctorado O desenvolvimento de lideranças globais através da educação de doutorado

    Directory of Open Access Journals (Sweden)

    Ginette Lemire Rodger

    2004-10-01

    Full Text Available Nursing leadership has become a major theme of discussions in many countries. The phenomenon is also present in nursing as the profession is redesigning and reinventing itself in all domains of practice. This paper discusses the development of global nursing leaders through doctoral education in the context of 21st century realities. Next, two meanings of global leadership of nursing are reviewed. Finally, doctoral education is focused by looking at worldviews and the challenges ahead in preparing global nursing leaders for the 21st century.El liderazgo en enfermería se ha vuelto un importante tema de discusión en muchos países. El fenómeno también está presente en la enfermería, ya que la profesión está redibujándose y reinventándose en todas las áreas de la práctica. Este artículo discute el desarrollo de liderazgos globales en enfermería mediante la educación de doctorado en el contexto de las realidades del siglo 21º. Enseguida son revisados dos significados del liderazgo global en enfermería. Finalmente se destaca la educación de doctorado al analizar las perspectivas del mondo y los desafíos que debemos afrontar en la preparación de liderazgos en enfermería para el siglo 21º.A liderança em enfermagem tornou-se um importante tema de discussão em muitos países. O fenômeno também se manifesta na enfermagem enquanto a profissão está se redesenhando e reinventando em todas as áreas da prática. Este artigo discute o desenvolvimento de lideranças globais em enfermagem através da educação de doutorado no contexto das realidades do século 21. A seguir, são revisados dois significados de liderança global em enfermagem. Finalmente, destaca-se a educação de doutorado ao analisar as perspectivas do mundo e os desafios a serem enfrentados na preparação de lideranças globais de enfermagem para o século 21.

  7. Depleting the curriculum: teaching digital platforms and curricular impoverishment

    OpenAIRE

    Fino, Carlos Manuel Nogueira

    2013-01-01

    The paper aims at showing how curricular complexity tends to be depleted by the use of digital platforms based on the SCORM (Sharable Content Object Reference Model) standard, which was created with the main purpose of recycling content as it is supposed to be independent both from the context of learning and the supporting technology also deemed to be neutral, all surrounded by a rhetoric of innovation and “pedagogical” innovation. The starting point of the discussion is García Perez’s mo...

  8. A Case Study of Relationships between Organizational Culture and Curricular Change in Engineering Education

    Science.gov (United States)

    Merton, Prudence; Froyd, Jeffrey E.; Clark, M. Carolyn; Richardson, Jim

    2009-01-01

    We examined two curricular change efforts at a small, midwestern engineering and science college in order to explore how organizational culture influences curricular change processes. We found that the failure of one effort (measured by inability to sustain the curriculum over time) and the success of the other (the curriculum continues to be…

  9. The Future of Music Education: Continuing the Dialogue about Curricular Reform

    Science.gov (United States)

    Miksza, Peter

    2013-01-01

    Professional discussion of curricular change and innovation is essential for maintaining and increasing the positive effects that music education can have on schoolchildren. Much recent discourse about curricular change has focused on critiques of the traditional large-ensemble model of music education, technological innovation applied to teaching…

  10. Europeanization or curricular harmonization in the area of administrative sciences (follow-up of Bologna process)

    OpenAIRE

    Lucica MATEI

    2008-01-01

    The paper aims a comparative analysis of curricula for Bachelor studies in the area of administrative sciences. The objectives of research focused on elaboration of a set of indicators, based on the curricular contents of the programmes from the first cycle in administrative sciences, aiming to size 'the Europeanism degree' and curricular compatibilisation degree between Romanian and European universities.

  11. Exploring Curricular Transformation to Promote Innovation and Entrepreneurship: An Institutional Case Study

    Science.gov (United States)

    McClure, Kevin R.

    2015-01-01

    Colleges and universities in the United States have developed and implemented a wide array of opportunities for undergraduate students to learn about innovation and entrepreneurship. Drawing upon an institutional case study, this article examines why one public research university initiated and supported curricular and co-curricular offerings in…

  12. El rigor metodológico en la evaluación curricular / Methodological Rigor in the Curricular Evaluation

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    Andrea Ramírez González

    2011-11-01

    Full Text Available Recibido 19 de mayo de 2011 • Aceptado 26 de agosto de 2011 • Corregido 27 de setiembre de 2011 Resumen. En el presente ensayo se desarrolla la importancia del rigor metodológico en una evaluación curricular. Se parte de que para su valoración, por parte de los interesados, es exigido que el evaluador muestre el rigor con el que se ha realizado el proceso, de tal manera que sea posible evidenciar elementos que la hacen válida, confiable y creíble. Para ello, se sustenta el rigor de la evaluación con base en la articulación de aspectos significativos, valorativos, teóricos, metodológicos, de participación de los actores y de ética. Estos permiten delimitar y desarrollar el objeto por evaluar. Por lo tanto, cada uno de estos aspectos forman parte esencial del camino a seguir en un proceso evaluativo. Abstract. This essay develops the importance of the methodological rigor in a curricular evaluation. The assessment of the curricular evaluation by the interested parties has to show the assessor’s rigor with which the process has been realized, in this way it is possible to demonstrate elements that make the evaluation valid, reliable and creditable. The rigor of the evaluation is sustained with the articulation of aspects that are significant, assessable, theoretical, and methodological, of participation of the actors and of ethics which allow delimiting and developing the object to be evaluated. Therefore, each of these aspects is an essential part of the way to continue in an evaluative process.

  13. El rigor metodológico en la evaluación curricular / Methodological Rigor in the Curricular Evaluation

    OpenAIRE

    Andrea Ramírez González

    2011-01-01

    Recibido 19 de mayo de 2011 • Aceptado 26 de agosto de 2011 • Corregido 27 de setiembre de 2011 Resumen. En el presente ensayo se desarrolla la importancia del rigor metodológico en una evaluación curricular. Se parte de que para su valoración, por parte de los interesados, es exigido que el evaluador muestre el rigor con el que se ha realizado el proceso, de tal manera que sea posible evidenciar elementos que la hacen válida, confiable y creíble. Para ello, se sustenta el rigor de la evalu...

  14. Chemical composition and antiproliferative activity of essential oil from aerial parts of a medicinal herb Artemisia herba-alba

    Directory of Open Access Journals (Sweden)

    Mounir Tilaoui

    2011-08-01

    Full Text Available Artemisia herba-alba Asso., Asteraceae, is widely used in Morrocan folk medicine for the treatment of different health disorders. However, no scientific or medical studies were carried out to assess the cytotoxicity of A. herba-alba essential oil against cancer cell lines. In this study, eighteen volatile compounds were identified by GC-MS analysis of the essential oil obtained from the plant's aerial parts. The main volatile constituent in A. herba-alba was found to be a monoterpene, Verbenol, contributing to about 22% of the total volatile components. The essential oil showed significant antiproliferative activity against the acute lymphoblastic leukaemia (CEM cell line, with 3 µg/mL as IC50 value. The anticancer bioactivity of Moroccan A. herba-alba essential oil is described here for the first time.

  15. Enhancement of Shelf Life of Button Mushroom, Agaricus bisporus (Higher Basidiomycetes) by Fumigant Application of Lippia alba Essential Oil.

    Science.gov (United States)

    Vishwakarma, Pratima; Pandey, Abhay K; Mishra, Priyanka; Singh, Pooja; Tripathi, N N

    2015-01-01

    Eleven essential oils isolated from higher plant species were assessed against the four isolates of Verticillium fungicola found on fruiting bodies of Agaricus bisporus. Eucalyptus citriodora and Lippia alba oils were more efficacious and completely inhibited the mycelial growth of fungal isolates. L. alba oil was fungistatic and fungicidal at 10- and 20-µL concentrations against all of the isolates, respectively, and was more potent than E. citriodora oil as well as some prevalent synthetic fungicides such as benomyl, ethylene dibromide, and phosphine. Eighty microliters of L. alba oil protected 500 g of fruiting bodies of A. bisporus for up to 7 d from infection of the fungus under in vivo conditions. The findings strengthen the possibility of L. alba oil as a plant-based protectant to enhance the shelf life of A. bisporus fruiting bodies. PMID:25746409

  16. Yeasts occurring on wheat seeds. V. A taxonomic study of a strain of Bullera alba (Hanna Derx

    Directory of Open Access Journals (Sweden)

    Zofia Maciejowska-Pokacka

    2014-11-01

    Full Text Available Morphology and physiology of a strain of Bullera alba was studied. The fungus could be distinguished from Cryptococcus laurentii var. flavescens only on the base of ballistospore formation. The isolate studied formed a true septate mycelium.

  17. LA FORMULACIÓN DE LA SITUACIÓN PROBLEMA EN LAS TESIS DEL DOCTORADO EN PSICOLOGÍA DE LA UNIVERSIDAD NACIONAL DE ROSARIO: ERRORES COMUNES Y PROPUESTAS DE SOLUCIÓN

    Directory of Open Access Journals (Sweden)

    Florencia Laura Rovetto

    2015-01-01

    Full Text Available En esta publicación abordamos la experiencia realizada con los alumnos del Doctorado dePsicología de la Universidad Nacional de Rosario (Argentina en el Seminario de Escritura deTesis I como espacio de reflexión e innovación para favorecer la metacognición requerida en elproceso inicial de elaboración escrita de la tesis. En el transcurso del seminario hemos detecta-do como un inconveniente general, entre muchos otros, la dificultad para formular la situaciónproblema que se les presenta a los doctorandos. En función de ello y del trabajo concreto enel aula, hemos implementado, en tanto docentes responsables del curso, una estrategia que,fundada en la perspectiva constructivista sociocultural, ha intentado sacar a luz las hipótesissubyacentes de los doctorandos, como lectores críticos de sus propios textos. En este trabajo,mostramos el modo concreto de intervención en el aula con ejemplos que han permitido laresolución de problemas suscitados durante el seminario.

  18. La comunidad en transformación. Análisis del cambio en la comunidad del ?Doctorado de Psicología Social Crítica? producido por las TIC?s

    Directory of Open Access Journals (Sweden)

    Maya Ninova

    2005-05-01

    Full Text Available A partir de la definición de comunidad virtual de Rheingold pretendemos hacer un análisis de la comunidad virtual del ?Doctorado de Psicología Social Crítica? (DPSC. La introducción y el uso masivo de las TIC?s (Tecnologías de la Información y de la Comunicación ha generado una transformación muy significativa en la forma de participar en una comunidad como la que encontramos en los DPSC. En esta comunicación pretendemos analizar cómo la introducción de esta nueva forma de relación ha generado cambios en la modalidad de nuestras interacciones y de nuestra identidad como miembros de la comunidad DPSC; para ello contaremos con entrevistas realizadas a los coordinadores de DPSC. Analizaremos la transformación de DPSC a partir de la teoría de P. Lévy.

  19. Iron Oxide Impregnated Morus alba L. Fruit Peel for Biosorption of Co(II): Biosorption Properties and Mechanism

    OpenAIRE

    Janardhan Reddy Koduru; Yoon-Young Chang; Jae-Kyu Yang; Im-Soon Kim

    2013-01-01

    Biosorption is an ecofriendly wastewater treatment technique with high efficiency and low operating cost involving simple process for the removal of heavy metal ions from aqueous solution. In the present investigation, Morus alba L. fruit peel powder (MAFP) and iron oxide impregnated Morus alba L. fruit peel powder (IO-MAFP) were prepared and used for treating Co(II) contaminated aqueous solutions. Further the materials were characterized by using FTIR and SEM-EDX analysis. From FT-IR analysi...

  20. Oxidative stability of cnicken thigh meat after treatment of abies alba essential oil

    Directory of Open Access Journals (Sweden)

    Adriana Pavelková

    2015-12-01

    Full Text Available In the present work, the effect of the Abies alba essential oil in two different concentrations on oxidative stability of chicken thigh muscles during chilled storage was investigated. In the experiment were chickens of hybrid combination Cobb 500 after 42 days of the fattening period slaughtered.  All the broiler chickens were fed with the same feed mixtures and were kept under the same conditions. The feed mixtures were produced without any antibiotic preparations and coccidiostatics. After slaughtering was dissection obtained fresh chicken thigh with skin from left half-carcass which were divided into five groups (n = 5: C - control air-packaged group; A1 - vacuum-packaged experimental group; A2 - vacuum-packaged experimental group with ethylenediaminetetraacetic acid (EDTA solution 1.50% w/w; A3 - vacuum-packaged experimental group with Abies alba oil 0.10% v/w and A4 - vacuum-packaged experimental group with Abies alba oil 0.20% v/w. The Abies alba essential oil was applicate on ground chicken things and immediately after dipping, each sample was packaged using a vacuum packaging machine and storage in refrigerate at 4 ±0.5 °C. Thiobarbituric acid (TBA value expressed in number of malondialdehyde was measured in the process of first storage day of 1st, 4th, 8th, 12th and 16th day after slaughtering and expressed on the amount of malondialdehyde (MDA in 1 kg sample. The treatments of chicken things with Abies alba essential oil show statistically significant differences between all testing groups and control group, where higher average value of MDA measured in thigh muscle of broiler chickens was in samples of control group (0.4380 mg.kg-1 compared to experimental groups A1 (0.124 mg.kg-1, A2 (0.086 mg.kg-1, A3 (0.082 mg.kg-1 and A4 (0.077 mg.kg-1 after 16-day of chilled storage. Experiment results show that the treatment of chicken thigh with Abies alba essential oil positively influenced on the reduction of oxidative processes in thigh

  1. Inhibitory effect of linalool-rich essential oil from Lippia alba on the peptidase and keratinase activities of dermatophytes.

    Science.gov (United States)

    Costa, Danielle Cristina Machado; Vermelho, Alane Beatriz; Almeida, Catia Amancio; de Souza Dias, Edilma Paraguai; Cedrola, Sabrina Martins Lage; Arrigoni-Blank, Maria de Fátima; Blank, Arie Fitzgerald; Alviano, Celuta Sales; Alviano, Daniela Sales

    2014-02-01

    Abstract Lippia alba (Miller) N.E. Brown is an aromatic plant known locally as "Erva-cidreira-do-campo" that has great importance in Brazilian folk medicine. The aim of our study was to evaluate the antidermatophytic potential of linalool-rich essential oil (EO) from L. alba and analyze the ability of this EO to inhibit peptidase and keratinase activities, which are important virulence factors in dermatophytes. The minimum inhibitory concentrations (MICs) of L. alba EO were 39, 156 and 312 µg/mL against Trichophyton rubrum, Epidermophyton floccosum and Microsporum gypseum, respectively. To evaluate the influence of L. alba EO on the proteolytic and keratinolytic activities of these dermatophytes, specific inhibitory assays were performed. The results indicated that linalool-rich EO from L. alba inhibited the activity of proteases and keratinases secreted from dermatophytes, and this inhibition could be a possible mechanism of action against dermatophytes. Due to the effective antidermatophytic activity of L. alba EO, further experiments should be performed to explore the potential of this linalool-rich EO as an alternative antifungal therapy.

  2. Prehrana pegaste sove Tyto alba na Goričkem: Diet composition of the barn owl Tyto alba at Goričko:

    OpenAIRE

    Janžekovič, Franc; Ficko, Melita

    2000-01-01

    Diet of the Barn Owl Tyto alba was studied in the traditional cultural landscape of Goričko (NE Slovenia). The pellets were collected during the 1997-1998 period in the attics of the churches at Domanjševci, Adrijanci and Hodoš. The owl preyed on 18 different mammal species, including Common Bat Myotis myotis. The most preyed species by number (39%) and by biomass (54%) was Common Vole Microtus arvalis. The prey was selected opportunistically, which is reflected through the wide feeding niche...

  3. Avian pox virus infection in a common barn owl (Tyto alba in southern Brazil

    Directory of Open Access Journals (Sweden)

    Gilberto D. Vargas

    2011-07-01

    Full Text Available A young common barn owl (Tyto alba was referred to the Núcleo de Reabilitação da Fauna Silvestre (Nurfs, Federal University of Pelotas (UFPel, after been found in a barn of a brick factory in the urban area of Pelotas, Rio Grande do Sul, Brazil. The bird was apathic, weak and with crusty lesions in the featherless areas (eyes, beak, legs, and died soon after arrival at Nurfs. Necropsy and histopathological examination of the lesions were carried out. The hyperplasia and hypertrophy of the cutaneous lesions, several eosinophilic intracyto-plasmic inclusion bodies in epithelial cells (Bollinger bodies, as well as particles characteristic of poxvirus, observed by electronic microscopy, confirmed the infection by avian poxvirus, what highlights the importance of Tyto alba as carrier of the virus in the wild.

  4. HYSTOLOGICAL-FUNCTIONAL SPECIFITY OF NYMPHAEA ALBA L.VEGETATIVE ORGANS

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    Sidorova V. N.

    2012-11-01

    Full Text Available Nymphaea alba L. belongs to aerohydrophytes and has all typical features of such ecological group. We found out the followings anatomic and functional features which are adaptation to the surplus of water: 1 formation of astrosklereid, which are the mechanical fabrics; 2 presence of large intercells which serve as plant fixation; 3 absence of stomas on the lower side of leaf and submarine organs that alterate the interchange of gases. The mycrochemical ash analysis of plant vegetative organs showed the presence of crystals of strontium, sulfur, potassium, ferrum, calcium, sodium, nitrogen, which vary by accumulation, form, and sizes, in vegetative organs (leaf, root and stem. We proved that quantitative, anatomical, and physiological peculiarities of Nymphaea alba L. vegetative organs uncover the mechanism of adaptation of aerohydrophytes to environment factors. The adaptative mechanisms of plant and their functioning are changed under influence of surplus of water.

  5. ANTI ULCER EFFECT OF BASELLA ALBA LEAF EXTRACT IN ASPIRIN INDUCED ALBINO RATS

    OpenAIRE

    P. Venkatalakshmi et al

    2012-01-01

    The present study was designed to evaluate the anti ulcer effect of Basella alba in aspirin induced ulcerated rats. Aspirin induced ulcer was revealed by increased ulcer index, decreased gastric pH, increase in the levels of pepsin, Thio barbituric acid reactive substance (TBARS). Lipid hydroperoxides and decrease in the levels of enzymatic and non enzymatic antioxidants. Treatment with the plant extract brought back the altered parameters to normal.

  6. ANTI ULCER EFFECT OF BASELLA ALBA LEAF EXTRACT IN ASPIRIN INDUCED ALBINO RATS

    Directory of Open Access Journals (Sweden)

    P. Venkatalakshmi et al

    2012-08-01

    Full Text Available The present study was designed to evaluate the anti ulcer effect of Basella alba in aspirin induced ulcerated rats. Aspirin induced ulcer was revealed by increased ulcer index, decreased gastric pH, increase in the levels of pepsin, Thio barbituric acid reactive substance (TBARS. Lipid hydroperoxides and decrease in the levels of enzymatic and non enzymatic antioxidants. Treatment with the plant extract brought back the altered parameters to normal.

  7. Fluvial valleys on Alba Patera, Mars, viewed by HRSC/MEx camera

    Science.gov (United States)

    Ansan, V.; Mangold, N.; Masson, P. L.; Neukum, G.

    2009-12-01

    Alba Patera is the northernmost shield volcano of the Tharsis bulge, on which valley networks have been identified in Viking images. Valleys are mainly distributed on the northern side of volcano, with a parallel to dendritic pattern associated with a very high drainage density of 2.3 km-1, comparable to those observed on Hawaiian volcanoes (Gulick and Baker, Nature 341, 1989; and JGR 95, 1990). They are older than sets of normal faults cutting Alba Patera, and dated of the Amazonian Period, but the age of the volcano itself (Late Hesperian-Early Amazonian) implies an age for valleys younger than that of classical valley networks formed during early Mars. These valley networks have been revisited by the HRSC stereo camera enable to generate Digital Elevation Models (DEM) with a spatial gridding of History, their original morphology is partially smoothened by a dust mantle in high resolution images, but this mantling does not seem to have filled these valleys significantly. Images also confirm that valleys located to the north are likely the result of hydrologic erosion in volcanic ash as proposed previously by Gulick and Baker (1990). Previously unrecognized valley networks have been observed on the eastern and southeastern sides of Alba Patera, where volcanic flows are well developed and less blanketed by dust or ash deposits. They are shallower than northern ones, and some prints of seepage at the front of lava flows have been identified indicating that liquid water percolation was an active process in this lithology. In summary, 3D characteristics of valleys on Alba Patera do not suggest a sustained fluvial activity unlike what could be derived by their 2D properties such as the high drainage density. Episodic snowmelt following snow deposition, or eventually episodic rainfall, could be at the origin of these shallow valleys.

  8. Phenotypic plasticity of lippia alba and lippia origanoides (vervenaceae) in response to availability of light

    OpenAIRE

    Parra Torres, Edwin; Rodríguez López, Nelson

    2011-01-01

    The distribution of the plant species is usually related to the magnitude of the phenotypic plasticity (PF). With the purpose of to stablish the possible relationship between the magnitude of the PF and the ecological breadth in response to light availability, the PF during the ontogeny in clones of Lippia alba and Lippia origanoides was evaluated. Both species are congeneris and show differences in their distribution. Three random treatments of light availability were set up, low (33%...

  9. Anti-inflammatory and anti-cancer activity of mulberry (Morus alba L.) root bark

    OpenAIRE

    Eo, Hyun Ji; Park, Jae Ho; Park, Gwang Hun; Lee, Man Hyo; Lee, Jeong Rak; Koo, Jin Suk; Jeong, Jin Boo

    2014-01-01

    Background Root bark of mulberry (Morus alba L.) has been used in herbal medicine as anti-phlogistic, liver protective, kidney protective, hypotensive, diuretic, anti-cough and analgesic agent. However, the anti-cancer activity and the potential anti-cancer mechanisms of mulberry root bark have not been elucidated. We performed in vitro study to investigate whether mulberry root bark extract (MRBE) shows anti-inflammatory and anti-cancer activity. Methods In anti-inflammatory activity, NO was...

  10. Sinalbins A and B, phytoalexins from Sinapis alba: elicitation, isolation, and synthesis.

    Science.gov (United States)

    Pedras, M S; Zaharia, I L

    2000-10-01

    The chemical structure and synthesis of sinalbin A is described. This cruciferous phytoalexin is produced by white mustard (Sinapis alba) after treatment with biotic and abiotic elicitors. In addition, a related metabolite, named sinalbin B, is present in extracts from elicited plants, but not in those from non-elicited controls. Sinalbin B, which was also synthesized, appears to be both a phytoalexin and a biosynthetic precursor of sinalbin A. PMID:11142844

  11. Oxidative stability of cnicken thigh meat after treatment of abies alba essential oil

    OpenAIRE

    Adriana Pavelková; Marek Bobko; Peter Haščík; Miroslava Kačániová; Jana Tkáčová

    2015-01-01

    In the present work, the effect of the Abies alba essential oil in two different concentrations on oxidative stability of chicken thigh muscles during chilled storage was investigated. In the experiment were chickens of hybrid combination Cobb 500 after 42 days of the fattening period slaughtered.  All the broiler chickens were fed with the same feed mixtures and were kept under the same conditions. The feed mixtures were produced without any antibiotic preparations and c...

  12. New Improvements in Magnetic Measurements Laboratory of the ALBA Synchrotron Facility

    Science.gov (United States)

    Campmany, Josep; Marcos, Jordi; Massana, Valentí

    ALBA synchrotron facility has a complete insertion devices (ID) laboratory to characterize and produce magnetic devices needed to satisfy the requirements of ALBA's user community. The laboratory is equipped with a Hall-probe bench working in on-the-fly measurement mode allowing the measurement of field maps of big magnetic structures with high accuracy, both in magnetic field magnitude and position. The whole control system of this bench is based on TANGO. The Hall probe calibration range extends between sub-Gauss to 2 Tesla with an accuracy of 100 ppm. Apart from the Hall probe bench, the ID laboratory has a flipping coil bench dedicated to measuring field integrals and a Helmholtz coil bench specially designed to characterize permanent magnet blocks. Also, a fixed stretched wire bench is used to measure field integrals of magnet sets. This device is specifically dedicated to ID construction. Finally, the laboratory is equipped with a rotating coil bench, specially designed for measuring multipolar devices used in accelerators, such as quadrupoles, sextupoles, etc. Recent improvements of the magnetic measurements laboratory of ALBA synchrotron include the design and manufacturing of very thin 3D Hall probe heads, the design and manufacturing of coil sensors for the Rotating coil bench based on multilayered PCB, and the improvement of calibration methodology in order to improve the accuracy of the measurements. ALBA magnetic measurements laboratory is open for external contracts, and has been widely used by national and international institutes such as CERN, ESRF or CIEMAT, as well as magnet manufacturing companies, such as ANTEC, TESLA and I3 M. In this paper, we will present the main features of the measurement benches as well as improvements made so far.

  13. Extra curricular photonics education in Romanian high schools

    Science.gov (United States)

    Sporea, Dan; Sporea, Adelina; Timus, Clementina

    2007-08-01

    In the frame of the European Union funded Comenius project "Hands-on Science", a network of very active high schools was created, aiming to attract students towards science study by offering them the possibility to learn and to express themselves through experiments. On the other side, our Institute coordinates the project "Science Education and Training in a Knowledge-Based Society - SET 2010", project supported by the Romanian Ministry of Education and Research, which targets the same audience by different means. The paper addresses some of the results of these two projects as they are linked with photonics teaching in high schools through extra curricular activities such as science clubs, science fairs, and national contests for high school students. The project results were introduced to the public at various conferences: ETOP Conference, France), NATO Advanced Workshop, Hungary), Hands-on Science Conference, Greece), Euroscience Forum, Germany), Communicating European Research, Belgium).

  14. A New Approach to Authoring Interactive Curricular Material

    Science.gov (United States)

    Christian, Wolfgang

    2001-10-01

    It is still not common to find computer-based interactive material incorporated into mainstream teaching. Learning the intricacies of a software package is a poor investment of time if the half-life of the textbook is longer than the half-life of the computer technology. Internet technologies are likely to change this situation. This talk describes a set of Java applets, known as Physlets, which make use of these technologies. Physlets are designed to communicate with browsers by employing a scripting language such as JavaScript, thereby allowing one applet to be used in many different contexts. This approach makes it possible to use a modular object-oriented approach for the design of material. But this is not enough. Effective curriculum development must couple our software design philosophy with research into the effectiveness of computer-based instruction. Examples of Physlet-based curricular material will be presented.

  15. Using online program development to foster curricular change and innovation.

    Science.gov (United States)

    Gwozdek, Anne E; Springfield, Emily C; Peet, Melissa R; Kerschbaum, Wendy E

    2011-03-01

    Distance education offers an opportunity to catalyze sweeping curricular change. Faculty members of the University of Michigan Dental Hygiene Program spent eighteen months researching best practices, planning outcomes and courses, and implementing an e-learning (online) dental hygiene degree completion program. The result is a collaborative and portfolio-integrated program that focuses on the development of reflective practitioners and leaders in the profession. A team-based, systems-oriented model for production, implementation, and evaluation has been critical to the program's success. The models and best practices on which this program was founded are described. Also provided is a framework of strategies for development, including the utilization of backward course design, which can be used in many areas of professional education.

  16. Improved Chemotherapeutic Activity by Morus alba Fruits through Immune Response of Toll-Like Receptor 4

    Directory of Open Access Journals (Sweden)

    Bo Yoon Chang

    2015-10-01

    Full Text Available Morus alba L. fruits have long been used in traditional medicine by many cultures. Their medicinal attributes include cardiovascular, hepatoprotective, neuroprotective and immunomodulatory actions. However, their mechanism of macrophage activation and anti-cancer effects remain unclear. The present study investigated the molecular mechanisms of immune stimulation and improved chemotherapeutic effect of M. alba L. fruit extract (MFE. MFE stimulated the production of cytokines, nitric oxide (NO and tumor necrosis factor-α (TNF-α and tumoricidal properties of macrophages. MFE activated macrophages through the mitogen-activated protein kinase (MAPKinase and nuclear factor-κB (NF-κB signaling pathways downstream from toll-like receptor (TLR 4. MFE was shown to exhibit cytotoxicity of CT26 cells via the activated macrophages, even though MFE did not directly affect CT26 cells. In a xenograft mouse model, MFE significantly enhanced anti-cancer activity combined with 5-fluorouracil and markedly promoted splenocyte proliferation, natural killer (NK cell activity, cytotoxic T lymphocyte (CTL activity and IFN-γ production. Immunoglobulin G (IgG antibody levels were significantly increased. These results indicate the indirect anti-cancer activity of MFE through improved immune response mediated by TLR4 signaling. M. alba L. fruit extract might be a potential anti-tumor immunomodulatory candidate chemotherapy agent.

  17. Improved Chemotherapeutic Activity by Morus alba Fruits through Immune Response of Toll-Like Receptor 4.

    Science.gov (United States)

    Chang, Bo Yoon; Kim, Seon Beom; Lee, Mi Kyeong; Park, Hyun; Kim, Sung Yeon

    2015-10-13

    Morus alba L. fruits have long been used in traditional medicine by many cultures. Their medicinal attributes include cardiovascular, hepatoprotective, neuroprotective and immunomodulatory actions. However, their mechanism of macrophage activation and anti-cancer effects remain unclear. The present study investigated the molecular mechanisms of immune stimulation and improved chemotherapeutic effect of M. alba L. fruit extract (MFE). MFE stimulated the production of cytokines, nitric oxide (NO) and tumor necrosis factor-α (TNF-α) and tumoricidal properties of macrophages. MFE activated macrophages through the mitogen-activated protein kinase (MAPKinase) and nuclear factor-κB (NF-κB) signaling pathways downstream from toll-like receptor (TLR) 4. MFE was shown to exhibit cytotoxicity of CT26 cells via the activated macrophages, even though MFE did not directly affect CT26 cells. In a xenograft mouse model, MFE significantly enhanced anti-cancer activity combined with 5-fluorouracil and markedly promoted splenocyte proliferation, natural killer (NK) cell activity, cytotoxic T lymphocyte (CTL) activity and IFN-γ production. Immunoglobulin G (IgG) antibody levels were significantly increased. These results indicate the indirect anti-cancer activity of MFE through improved immune response mediated by TLR4 signaling. M. alba L. fruit extract might be a potential anti-tumor immunomodulatory candidate chemotherapy agent.

  18. ANTI-DIABETIC EFFECT OF MORUS ALBA ON RABBIT AS ANIMAL MODEL

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    Laddha G. P.

    2012-04-01

    Full Text Available A study of ancient literature indicates that diabetes was fairly well known and well conceived as an entity in India. The nature has provided abundant plant wealth for all the living creatures, which possess medicinal virtues. Therefore, there is a necessity to explore their uses and to conduct Pharmacognostic and pharmacological studies to ascertain their therapeutic properties. In fact, nowadays diabetes is a global problem. Hence, the present study aims to open new avenues for the improvement of medicinal uses of Morus alba. for the area for diabetes. Another important objective of such study is to bring the anti-diabetic medicinal plants sector on a firm scientific footing, raise awareness and add value to the resource. Dried petroleum ether (60-80°C extracts of leaves of Morus alba. were subjected for hypoglycemic activity in New Zealand rabbits (1.5-3.5 kg. Blood sugar level was determined using digital glucometer. The oral administration of leaf extracts at doses of 200 mg/ kg− lead to a significant blood glucose reduction. This laid the foundation to study the active compounds of such anti-diabetic plants that are responsible for the hypoglycemic activities. It also proves the traditional claim of Kachh region with regard to Morus Alba for its anti-diabetic activity.

  19. [Optimization of extraction technology from Paeoniae Radix Alba using response surface methodology].

    Science.gov (United States)

    Jin, Lin; Zhao, Wan-shun; Guo, Qiao-sheng; Zhang, Wen-sheng; Ye, Zheng-liang

    2015-08-01

    To ensure the stability of chemistry components and the convenience of operation, ultrasound method was chosen to study in this investigation. As the total common peaks area in chromatograms was set to be evaluation index, the influence on the technology caused by extraction time, ethanol concentration and liquid-to-solid ratio was studied by using single factor methodology, and the extraction technology of Paeoniae Radix Alba was optimized by using response surface methodology. The results showed that the extracting results were most affected by ethanol concentration; liquid-to-solid ratio came the second and extraction time thirdly. The optimum ultrasonic-assisted extraction conditions were as follow: the ultrasonic extraction time was 20.06 min, the ethanol concentration in solvent was 72.04%, and the liquid-to-solid ratio was 53.38 mL · g(-1), the predicted value of total common peaks area was 2.1608 x 10(8). Under the extraction conditions after optimization, the total common peaks area was 2.1422 x 10(8), and the relative deviation between the measured and predicted value was 0.86%, so the optimized extraction technology for Paeoniae Radix Alba is suitable and feasible. Besides, for the purpose of extracting more sufficiently and completely, the optimized extraction technology had more advantages than the extraction method recorded in the monogragh of Paeoniae Radix Alba in Chinese Pharmacopoeia, which will come true the assessment and utilization comprehensively. PMID:26677698

  20. WINE ROAD - AN INSTRUMENT FOR THE VALORISATION OF WINE TOURISM POTENTIAL CASE STUDY: ALBA COUNTY VINEYARDS

    Directory of Open Access Journals (Sweden)

    UNGUREANU Mihaela

    2015-12-01

    Full Text Available The main aim of this study is to highlight the wine-growing and wine-making potential of Alba County and the way it can be valorised. Alba county has a rich winegrowing and wine-making heritage, a fact which is due to the long-standing tradition of winegrowing on these area, as well as to the characteristics of the natural factors (relief, geology, climate, soil, favourable for obtaining high-quality wines, the reputation of which has been acquired at national and international competitions. In order to render useful the wine tourism resources, the development of a specific infrastructure is needed, as well as the creation of complex tourist products, able to satisfy a wide range of tourist motivations. An efficient instrument to make productive the wine potential of a region is the „Wine Road" – a tourist trail which includes the tourist attractions of a delimited area, usually with a controlled designation of origin, and also a diverse range of tourist services (transportation, accommodation, catering leisure etc.. In Alba County, the „Wine Road" can be considered as a tourist attraction in itself, but also a means of harnessing the rich cultural-historical and natural heritage and, implicitly, the wine-growing and wine-making heritage.

  1. THE ANTIMICROBIAL ACTIVITIES OF ETHANOLIC EXTRACTS OF BASELLA ALBA ON SELECTED MICROORGANISMS

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    Oyewole OA

    2012-12-01

    Full Text Available Agar cup plate method was used to determine the antimicrobial effects of Basella alba against Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli and Candida albican. Ethanolic extracts of the leaf and stem of B. alba revealed the presence of tannin, terpene, steroid, saponin, anthraquinone, and with carbohydrate present only in the stem extracts. The result of this study showed that S. aureus, P. aeruginosa and E. coli were susceptible to 60mg/ml and 100mg/ml of the extract while Candida albican was resistant. The minimum inhibitory concentration (MIC and minimum bactericidal concentration (MBC for the ethanolic extract of the leaf and stem were also determined. The MIC and the MBC for the leaf and stem extract of P. aeruginosa and E. coli was 50mg/ml while the MIC and the MBC for the leaf and stem extract of S. aureus was 100mg/ml. The result of this study suggests that the ethanolic extracts of B. alba was not suitable for the treatment of disease caused by Candida albican but could be suitable for the treatment of diseases caused by S. aureus, P. aeruginosa and E. coli.

  2. Analysis of synonymous codon usage in chloroplast genome of Populus alba

    Institute of Scientific and Technical Information of China (English)

    ZHOU Meng; LONG Wei; LI Xia

    2008-01-01

    The pattern of codon usage in the chloroplast genome of Populus alba was investigated.Correspondence analysis (a commonly used multivariate statistical approach) and method of effective number of codons (ENc)-plot were conducted to analyze synonymous codon usage.The results of correspondence analysis showed that the distribution of genes on the major axis was significantly correlated with the frequency of use of G+C in synonymously variable third position of sense codon (GC3S),(r=0.349),and the positions of genes on the axis 2 and axis 3 were significantly correlated with CAI (r=-0.348,p<0.01 and r=0.602,p<0.01).The ENc for most genes was similar to that for the expected ENc based on the GC3S,but several genes with low ENC values were lying below the expected curve.All of these data indicated that codon usage was dominated by a mutational bias in chloroplast genome of P.alba.The selection in nature for translational efficiency only played a minor role in shaping codon usage in the chloroplast genome of P.alba.

  3. Odisolane, a Novel Oxolane Derivative, and Antiangiogenic Constituents from the Fruits of Mulberry (Morus alba L.).

    Science.gov (United States)

    Lee, Seoung Rak; Park, Jun Yeon; Yu, Jae Sik; Lee, Sung Ok; Ryu, Ja-Young; Choi, Sang-Zin; Kang, Ki Sung; Yamabe, Noriko; Kim, Ki Hyun

    2016-05-18

    Mulberry, the fruit of Morus alba L., is known as an edible fruit and commonly used in Chinese medicines as a warming agent and as a sedative, tonic, laxative, odontalgic, expectorant, anthelmintic, and emetic. Systemic investigation of the chemical constituents of M. alba fruits led to the identification of a novel oxolane derivative, (R*)-2-((2S*,3R*)-tetrahydro-2-hydroxy-2-methylfuran-3-yl)propanoic acid (1), namely, odisolane, along with five known heterocyclic compounds (2-6). The structure of the new compound was elucidated on the basis of HR-MS, 1D and 2D NMR ((1)H-(1)H COSY, HSQC, HMBC, and NOESY) data analysis. Compound 1 has a novel skeleton that consists of 8 carbon units with an oxolane ring, which until now has never been identified in natural products. The isolated compounds were subjected to several activity tests to verify their biological function. Among them, compounds 1, 3, and 5 significantly inhibited cord formation in HUVECs. The action mechanism of compound 3, which had the strongest antiangiogenic activity, was mediated by decreasing VEGF, p-Akt, and p-ERK protein expression. These results suggest that compounds isolated from M. alba fruits might be beneficial in antiangiogenesis therapy for cancer treatment.

  4. Flour from Prosopis alba cotyledons: A natural source of nutrient and bioactive phytochemicals.

    Science.gov (United States)

    Cattaneo, F; Costamagna, M S; Zampini, I C; Sayago, J; Alberto, M R; Chamorro, V; Pazos, A; Thomas-Valdés, S; Schmeda-Hirschmann, G; Isla, M I

    2016-10-01

    The Prosopis alba seed is a waste material in the process to produce pod flour. To suggest a potential use of these seeds it is necessary to determine the nutritional, phytochemical and functional quality of cotyledon flour from Prosopis alba. This flour showed high level of proteins (62%), low content of total carbohydrate and fat. Free polyphenol (1150±20mg GAE/100g flour) and carotenoids (10.55±0.05mg β-CE/100g flour) compounds were the dominant compounds. The main identified constituents in the polyphenolic extracts were C- glycosyl flavones, including schaftoside, isoschaftoside, vicenin II, vitexin and isovitexin. The extract enriched in polyphenolic compounds exhibited ABTS(+) reducing capacity and scavenging activity of H2O2; and was able to inhibit phospholipase, lipoxygenase and cyclooxygenase, three pro-inflammatory enzymes. According to our results, the P. alba cotyledon flour could be considered as a new alternative in the formulation of functional foods or food supplements. PMID:27132827

  5. Insecticidal activity of powder and essential oil of Cryptocarya alba (Molina Looser against Sitophilus zeamais Motschulsky

    Directory of Open Access Journals (Sweden)

    Juan J Pinto

    2016-03-01

    Full Text Available Cereals constitute a relevant part of human and domestic animal diet. Under storage conditions, one of the most significant problems of these crops is insect pests as the maize weevil (Sitophilus zeamais Motschulsky. This insect species is usually controlled by means of synthetic insecticides but problems as toxic residues and resistance has led to the search for more friendly control alternatives such as botanical insecticides. The aim of this research was to evaluate, under laboratory conditions, the insecticidal properties of the powder and the essential oil of peumo (Cryptocarya alba [Molina] Looser; Lauraceae leaves against S. zeamais. The variables assessed were toxicity by contact and fumigant activity, adult emergence (F1, repellent effect, and impact on wheat (Triticum aestivum L. seed germination. A completely randomized design was used with five treatments and 10 replicates. The higher mortality levels were obtained at 80 g powder kg-1 grain and 40 mL essential oil kg-1 grain of C. alba; in both cases, the mortality of adult S. zeamais surpassed 80%. The emergence of adults S. zeamais (F1 was reduced by 100% at 80 g powder kg-1 grain and 40 mL essential oil kg-1 grain. Germination of wheat seeds treated with C. alba powder and essential oil was not affected. Both, the powder and the oil treatments showed repellent effect, but not fumigant activity.

  6. The biology of flowering and structure of selected elements of Cornus alba L. flowers

    Directory of Open Access Journals (Sweden)

    Agata Konarska

    2012-12-01

    Full Text Available The biology of flowering and the micromorphology of Cornus alba flowers were studied using light and scanning electron microscopy. The flowering of white dogwood in 2008 lasted 35 days, and the lifespan of a single flower was 3 days. The number of flowers per inflorescence was variable (on the average, it was 89. The largest group of insects visiting the flowers of C. alba comprised Hymenoptera (mainly bees and andrenids, then ants, dipterans and beetles. They foraged the dogwood flowers most intensively between 11.00 and 15.00. The inconspicuous four-petalled flowers of C. alba were characterised by the occurrence of T-shaped, two-armed non-glandular trichomes covering the receptacle as well as observed on the petals of the corolla, the style of the pistil and the anthers in a smaller number. The trichomes were covered by a thick cuticle with characteristic outgrowths. They contained a living protoplast, and plastids were observed in the cytoplasm of the trichome cells. In addition, anomocytic stomata were found in the epidermis of the receptacle and in the epidermis of the corolla petals. The stigma of the pistil and the adaxial epidermis of the petals were composed of very numerous conical papillae.

  7. HISTÓRICO DA PROPOSTA CURRICULAR DE SANTA CATARINA

    Directory of Open Access Journals (Sweden)

    Ivonete Benedet Fernandes Coan

    2015-12-01

    Full Text Available Este texto faz parte da dissertação de mestrado em andamento que tem como objetivo principal analisar os textos sobre alfabetização com letramento contidos na Proposta Curricular de Santa Catarina, no sentido de identificar conceitos e encaminhamentos efetuados pelo Estado catarinense aos professores da rede estadual de ensino por meio dessa política pública. A pesquisa orienta-se na concepção histórico-crítica e adota como método a análise documental e a pesquisa bibliográfica com revisão de literatura sobre as categorias pesquisadas. As respostas ao problema de pesquisa identificaram, precariedade na formação de professores; complexidade dos textos que compõem a Proposta e influência do sistema neoliberal sobre as políticas públicas educacionais brasileiras como fatores que concorrem para a permanência de índices de analfabetismo, repetência e evasão escolar no Estado de Santa Catarina. A elaboração do componente curricular catarinense teve início no final dos anos 1980 e a última atualização foi editada em 2005. Neste artigo, escreve-se o processo de construção dessa Proposta a partir do Plano de Ação 88/91 até os Cadernos Temáticos publicados em 2005.

  8. Las Concepciones Curriculares del Profesorado de Ciencias: instrumentos para su representación.

    OpenAIRE

    Solís Ramírez, Emilio; Porlán Ariza, Rafael; Rivero García, Ana

    2006-01-01

    En esta comunicación se presentan algunos instrumentos de investigación para representar las Concepciones Curriculares del Profesorado de Ciencias. Dichos instrumentos se han construido y experimentado utilizando como técnica el análisis de contenidos de documentos escritos. Tienen como Marco teórico los referentes conceptuales del Proyecto curricular IRES (Investigación y Renovación Escolar). In this communication some investigation instruments are presented to represent the Curricular Co...

  9. Découvertes archéologiques à Alba Iulia et une conversion des Hongrois

    Directory of Open Access Journals (Sweden)

    Răzvan Theodorescu

    2014-12-01

    Full Text Available Superposés par l’autel de la basilique romane St Michel de Alba Iulia,les restes d’un baptistère circulaire,daté au Xe siècle, témoignent d’une technique de construction fréquente dans l’espace byzantin. Une chronique byzantine (Cedrenos-Skylitzes fait mention du baptême à Constantinople, vers le milieu du même siècle, d’un chef hongrois, Gyula «archonte des Turcs» qui retourna dans ses terres accompagné par un «évêque de la Turquie», Hiérothée. On sait que, pour les Byzantins de cette époque-là, les Magyars étaient des Turcs et que la Turquie représentait le Sud de la Hongrie et la zone transylvaine. Il est donc évident que la résidence de Gyula ne saurait être autre que «Alba de Gyula», donc, Alba Iulia, jusqu’où il était arrivée la première vague de pénétration hongroise, suivant la rivière Mureş, en quête de salines. Dès 1977, ai-je déjà avancé l’hypothèse d’une première christianisation des Hongrois, faite à Alba Iulia vers 950, sous le signe de Byzance, une bonne moitié de siècle avant que le petit-fils de Gyula, le roi Etienne I de Hongrie, n’en dirige une nouvelle, faite cette fois sous le signe de Rome. De nouvelles découvertes à Alba Iulia ont mis en évidence une église de type «croix grecque inscrite», datée toujours au Xe siècle, ce qui nous permet d’affirmer que, de par l’évêque grec, le sanctuaire cruciforme et le baptistère circulaire, on peut parler d’un horizon de vie byzantine en Transylvanie, avant l’année 1000.

  10. Evaluación del proyecto curricular "naturaleza en la ciudad"

    OpenAIRE

    Membiela, Pedro (ed.); Suárez, M.; Nogueiras, E.

    1994-01-01

    The internal evaluation of a Natural History curricular project is shown, which is carried out within the framework of educational research action, through triangular prospection of opinion from students, teachers and external advisers.

  11. Adaptación curricular de “Programación en Internet”

    OpenAIRE

    Luján Mora, Sergio (coord.)

    2016-01-01

    Trabajo del curso “Adaptaciones Curriculares para la Inclusión de Estudiantes con Necesidades Educativas Especiales” impartido en la Escuela Politécnica Nacional (Quito, Ecuador) del 16 al 22 de marzo de 2016.

  12. American Association of Dental Schools Curricular Guidelines for Practice Management and for Preventive Dentistry.

    Science.gov (United States)

    Journal of Dental Education, 1980

    1980-01-01

    Curricular guidelines developed by the American Association of Dental Schools for use by individual educational institutions as curriculum development aids are provided. The guidelines were developed by the Sections on Community and Preventive Dentistry and Practice Administration. (MLW)

  13. Adventure Stories for Reading, Learning and Literacy Cross-curricular resources for the primary school

    CERN Document Server

    Leicester, Mal

    2010-01-01

    Takes a unique approach to cross-curricular teaching in the primary classroom. Providing eight original adventure stories, this title builds up a suite of resources and activities for teachers to use in the classroom

  14. The influence of phosphorus nutritional status on the uptake of germanium in Panicum miliaceum and Brassica alba

    Science.gov (United States)

    Kaden, Ute Susanne; Székely, Balázs; Wiche, Oliver

    2015-04-01

    In order to investigate the influence of the phosphorus nutritional status on the uptake of germanium (Ge) in biomass two species, white millet (Panicum miliaceum) and white mustard (Brassica alba) were grown and sampled in a greenhouse experiment. The cultivation took place on two different substrates. The plants were fertilized with different nutrient solutions which differed in their phosphate content, and artificial addition of Ge was held via the casting solution. During the test period, measurements of the pH value, electric conductivity, and phosphate content of the soil solution were conducted. To transfer germanium from soil and plant material in solution, melting and microwave digestion processes were done. The experiment showed that in both species the additional Ge supply also leads to an increasing germanium content in the aboveground plant material. The two species, however, behave differently in response to this Ge supply. Panicum miliaceum accumulates Ge in the above-ground parts of plants stem, leaf and fruit to a much greater extent than Brassica alba. On the other hand the Ge accumulation in the roots of both B. alba and P. miliaceum was very high. In case of B. alba the root content was found by far higher as compared to the other parts of the plant. The addition of phosphate in the system changes the behavior. Without additional Ge its natural uptake from soil decreases in both species but in B. alba it is more characteristic. Increasing Ge supply (for both species) leads to an increased Ge uptake, until it reaches a maximum, regardless of the presence of phosphate addition. Phosphate, on the other hand, has positive effects on Ge uptake only in the case of B. alba roots, and to a limited extent in roots of P. miliaceum. In addition, for Panicum miliaceum an increase of germanium mainly in the underground parts was achieved. A further addition of phosphate did not have a positive effect on a greater enrichment of germanium. Whereas in Brassica

  15. PERCEPTIONS OF STUDENTS & TEACHERS OF GOVERNMENT & PRIVATE SECONDARY SCHOOLS ON CO-CURRICULAR ACTIVITIES

    OpenAIRE

    SHAGUN SIKKA; ANIL KUMAR AGNIHOTRI

    2013-01-01

    With expansion of education segment in our country and increasing global competition increasing relentlessly, the need for improving the education. Co- curricular activities are very important and essential part of an education system. It is the cocurricular aspect of the education that prepares and moulds the students to be holistic. The importance of co-curricular activities has been realized since a long time and again communicated through various education commissions and national policy ...

  16. Computer science in the primary school and cross–curricular integration

    OpenAIRE

    Lekše, Mihela

    2014-01-01

    The graduation thesis deals with the case study of the computer science in the primary school from the perspective of cross-curricular integration. Teaching the computer science as an elective course offers many options for two-sided integration. Therefore, our goal was to establish the teachers' and pupils' experience of cross-curricular integration, on which occasions it is carried out, how pupils accept different forms of teaching, and how is that reflected in their motivation. We also pai...

  17. Curricular premises and strategies in order to develop students' intercultural competences

    OpenAIRE

    Claudiu-Marian Bunăiaşu

    2015-01-01

    The relationship between cultural diversity’s factors and the development of some structures belonging to students’ personality, represents a basic premise in studying intercultural education. One theme of this issue is related to curricular strategies focused on training situations, which enable students’ intercultural learning experiences and social performances awareness, as part of the multicultural society. The article Curricular premises and strategies in order to develop students’ inte...

  18. The instrumentation of informatics curricular strategy in the subject Algebra I in Mathematic – Physics career.

    OpenAIRE

    Neisy Rodríguez Morales; Ortelio Quero Méndez; Sergio Luis Rodríguez Suárez

    2014-01-01

    The article shows the theoretical elements related with the conception of the curricular strategies and its instrumentation in the process of the student's of the Mathematical career formation - Physics. Examples are presented that demonstrate how to deal with the computer science's curricular strategy from the teaching process - learning of the subject Algebra I in the third year of the career. They give the possibility that the formation process be more effective, they facilitate...

  19. Una mirada a la planificación estratégica curricular

    Directory of Open Access Journals (Sweden)

    Navarro, Yasmile

    2010-05-01

    Full Text Available La presente investigación tiene como objetivo fundamental explorar la planificación curricular de la educación formal en su devenir histórico a partir de las teorías curriculares y disciplinas auxiliares. La metodología de la investigación es descriptiva documental sustentada en autores de reconocida trayectoria en los temas de planificación, currículo y planificación curricular, entre los que destacan Peñaloza (1995, Taba (1984, Tyler (1982, Díaz Barriga (1984, Arnaz (1981, López (2001, Corredor (2004, Ander-Egg (2004, Jáuregui (1988, Villarroel (1990, Orta de Useche y Useche (2000, Iafrancesco (2004, Correa de Molina (2004, Vílchez (1995 y Tobón et al. (2006. Los resultados evidencian que la planificación curricular surge a partir de la década de los veinte y se sistematiza a mediados de los cincuenta. A partir de entonces se define el currículo como plan, al tiempo que se asumen los enfoques vigentes de planificación administrativa, ésta última inicialmente relacionada más con la organización de estrategias instruccionales y recursos didácticos que como instrumento orientador del desarrollo curricular. En décadas posteriores, diversos autores han propuesto la planificación curricular con una visión estratégica. Se concluye que el currículo responde fundamentalmente a la perspectiva de los planificadores curriculares. Se propone considerar al currículo como una estrategia que se formule, ejecute y evalúe de acuerdo a un plan estratégico institucional que oriente la gestión curricular.

  20. Tuning-América Latina y su compatibilidad con el modelo curricular cubano

    Directory of Open Access Journals (Sweden)

    Rebeca Vega Miche

    2009-01-01

    El objetivo de este trabajo consiste en analizar cómo las competencias genéricas acordadas por el proyecto Tuning son compatibles con el modelo curricular cubano que persigue la formación integral del profesional. Se valora a partir de la experiencia de la licenciatura de química el desarrollo de las habilidades y capacidades de Tuning a partir de las diferentes actividades curriculares.

  1. Quimiotipos, Extracción, Composición y Aplicaciones del Aceite Esencial de Lippia alba

    Directory of Open Access Journals (Sweden)

    G.A. LINDE

    2016-03-01

    Full Text Available RESUMO Lippia alba é uma planta amplamente distribuída nas zonas tropicais, subtropicais e temperadas das Américas, África e Ásia. O óleo essencial de L. alba tem sido amplamente estudado, entretanto apresenta variações de produção. Portanto este estudo teve como objetivo realizar uma revisão dos principais quimiotipos, métodos de extração, composição e aplicação do óleo essencial de L. alba. Neste estudo são discutidos os principais quimiotipos e sua relação com fatores genéticos e características morfológicas. Também são discutidos os fatores que afetam o rendimento de produção, composição química, métodos de extração e do uso e da atividade biológica do óleo essencial de L. alba. Apesar da vasta literatura sobre os óleos essenciais de L. alba, ainda desenvolvimento de aplicações para a produção de cosméticos, fármacos e alimentos, bem como faltam definições agronomicas sobre o cultivo e melhoramento desta planta.

  2. Ameliorative effect of Morus alba leaves extract against developmental retinopathy in pups of diabetic and aluminum intoxicated pregnant albino rats

    Institute of Scientific and Technical Information of China (English)

    Hassan; El-Sayyed; Gamal; Badawy; Sobhy; Hassab; Elnabi; Ibrahim; El-Elaimy; Eman; Al; Shehari

    2015-01-01

    Objective: To investigate the possible ameliorative effect of crude water extract of Morus alba(M. alba) leaves on retinopathy of rat pups maternally subjected to diabetes and/or Al intoxication.Methods: Both control and experimental groups were subjected to certain integrated approaches, namely, biochemical assessments, light microscopic investigation, transmission electron microscopic investigation, single cell gel electrophoresis(comet assay) and determination of DNA fragmentation.Results: The retina of pups of diabetic and/or Al-intoxicated mothers exhibited abnormal alterations in retinal cell layers including retinal pigmented epithelium, photoreceptor inner segment and ganglion cells. Increased incidence of DNA fragmentation and apoptosis were evident in pups of diabetic and/or Al-intoxicated mothers. However, retina of pups maternally received M. alba extract plus diabetes or Al-intoxicated alone or in combination showed marked amelioration. Less degree of ameliorations was seen in retina of pups maternally subjected to combined treatment. Furthermore, application of crude water extract of M.alba resulted in amelioration of the alterations of maternal serum glucose as well as Al concentration.Conclusions: Based on the results of the present study, M. alba extract is effective against experimentally diabetic and Al-induced developmental retinopathy.

  3. Characterization of Melanogenesis Inhibitory Constituents of Morus alba Leaves and Optimization of Extraction Conditions Using Response Surface Methodology

    Directory of Open Access Journals (Sweden)

    Ji Yeon Jeong

    2015-05-01

    Full Text Available Melanin is a natural pigment that plays an important role in the protection of skin, however, hyperpigmentation cause by excessive levels of melatonin is associated with several problems. Therefore, melanogenesis inhibitory natural products have been developed by the cosmetic industry as skin medications. The leaves of Morus alba (Moraceae have been reported to inhibit melanogenesis, therefore, characterization of the melanogenesis inhibitory constituents of M. alba leaves was attempted in this study. Twenty compounds including eight benzofurans, 10 flavonoids, one stilbenoid and one chalcone were isolated from M. alba leaves and these phenolic constituents were shown to significantly inhibit tyrosinase activity and melanin content in B6F10 melanoma cells. To maximize the melanogenesis inhibitory activity and active phenolic contents, optimized M. alba leave extraction conditions were predicted using response surface methodology as a methanol concentration of 85.2%; an extraction temperature of 53.2 °C and an extraction time of 2 h. The tyrosinase inhibition and total phenolic content under optimal conditions were found to be 74.8% inhibition and 24.8 μg GAE/mg extract, which were well-matched with the predicted values of 75.0% inhibition and 23.8 μg GAE/mg extract. These results shall provide useful information about melanogenesis inhibitory constituents and optimized extracts from M. alba leaves as cosmetic therapeutics to reduce skin hyperpigmentation.

  4. The essential oil from Lippia alba induces biochemical stress in the silver catfish (Rhamdia quelen after transportation

    Directory of Open Access Journals (Sweden)

    Joseânia Salbego

    2014-12-01

    Full Text Available This study investigated the effects of the essential oil (EO from Lippia alba on biochemical parameters related to oxidative stress in the brain and liver of silver catfish (Rhamdia quelen after six hours of transport. Fish were transported in plastic bags and divided into three treatments groups: control, 30 µL L- 1 EO from L.alba and 40 µL L-1 EO from L.alba. Prior to transport, the fish were treated with the EO from L. alba (200 µL L -1 for three minutes, except for the control group. Fish transported in bags containing the EO did not have any alterations in acetylcholinesterase, ecto -nucleoside triphosphate diphosphohydrolase and 5'nucleotidase activity in the brain or superoxide dismutase activity in the liver. The hepatic catalase (CAT, glutathione-S-transferase (GST, glutathione peroxidase (GPx, nonprotein thiol and ascorbic acid levels were significantly lower compared to the control group. However, the hepatic thiobarbituric acid- reactive substances, protein oxidation levels and the lipid peroxidation/catalase+glutathione peroxidase (LPO/CAT+GPx ratio were significantly higher in fish transported with both concentrations of the EO, indicating oxidative stress in the liver. In conclusion, considering the hepatic oxidative stress parameters analyzed in the present experiment, the transport of previously sedated silver catfish in water containing 30 or 40 µL L-1 of EO from L. alba is less effective than the use of lower concentrations.

  5. Mosquito larvicidal and ovicidal properties of Eclipta alba (L.) Hassk (Asteraceae) against chikungunya vector, Aedes aegypti (Linn.) (Diptera:Culicidae)

    Institute of Scientific and Technical Information of China (English)

    M Govindarajan; P Karuppannan

    2011-01-01

    Objective: The present study deals with the investigation of larvicidal and ovicidal activities of benzene, hexane, ethyl acetate, methanol and chloroform leaf extract of Eclipta alba (E. alba) against dengue vector, Aedes aegypti (Ae. Aegypti). Methods: Twenty five early III instar larvae of Ae. aegypti was exposed to various concentrations (50-300 ppm) and was assayed in the laboratory by using the protocol of WHO 2005; the 24 h LC50 values of the E. alba leaf extract was determined by Probit analysis. For ovicidal activity, slightly modified method of Su and Mulla was performed. The ovicidal activity was determined against Ae. aegypti to various concentrations ranging from 100-350 ppm under the laboratory conditions. The egg hatch rates were assessed 48 h post treatment. Results: The LC50 values of benzene, hexane, ethyl acetate, methanol and chloroform extract of E. alba against early third instar larvae of Ae. aegypti were 151.38, 165.10, 154.88, 127.64 and 146.28 ppm, respectively. Maximum larvicidal activity was observed in the methanol extract followed by chloroform, benzene, ethyl acetate and hexane extract. No mortality was observed in control. Among five solvent tested the methanol extract was found to be most effective for ovicidal activity against Ae. aegypti. The methanol extracts exerted 100% mortality (zero hatchability) at 300 ppm. Conclusions: From the results it can be concluded the crude extract of E. alba was an excellent potential for controlling Ae. aegypti mosquito.

  6. Educação com enfoque CTS em documentos curriculares regionais: o caso das diretrizes curriculares de física do estado do Paraná

    OpenAIRE

    Silmara Alessi Guebur Roehrig; Sérgio Camargo

    2014-01-01

    Acreditando que a consolidação do movimento que prioriza as relações entre ciência, tecnologia e sociedade (CTS) na educação científica perpassa as decisões curriculares, buscamos compreender como esta vertente se insere nas Diretrizes Curriculares de física do Estado do Paraná (DCE/PR). Após caracterizarmos Educação com enfoque CTS, a partir de Ziman, Aikenhead e Yager, utilizamos a metodologia da Análise Textual Discursiva para estabelecer categorias de análise. A constituição dos dados se ...

  7. Aportes curriculares para la educación en medios: un proceso en construcción Curricular Contribution to Media Education: a Work in Progress

    OpenAIRE

    Renato Opertti

    2009-01-01

    El análisis de la educación en medios desde una perspectiva educativa y curricular es el objeto de este trabajo que enfatiza el desarrollo de las competencias que requieren los alumnos para su participación activa en el mundo actual. Se analizan los procesos de desarrollo curricular que, integrados por componentes políticos y técnicos, reflejan el tipo de sociedad que aspiramos a construir. Asimismo, se presenta el concepto de educación inclusiva como una visión educativa que busca garantizar...

  8. Estudos comparados como método de pesquisa: a escrita de uma história curricular por documentos curriculares

    OpenAIRE

    FABIANY DE CÁSSIA TAVARES SILVA

    2016-01-01

    El artículo presenta una investigación concluida, inserida en el campo da la historia de la educación, focalizando la reflexión sobre las condiciones teóricas y metodológicas que se utilizan en los procedimientos del estudio comparado. El objetivo de la investigación fue el de escribir una historia curricular particular, mediante el estudio de documentos curriculares. La metodología utilizada se orienta por la explicitación de los fundamentos teóricos, de las áreas de comparación y de l...

  9. Sistema reprodutivo do Ipê-Branco: Tabebuia roseo-alba (Ridley Sandwith (Bignoniaceae Breeding system of the White Trumpet Tree: Tabebuia roseo-alba (Ridley Sandwith (Bignoniaceae

    Directory of Open Access Journals (Sweden)

    Gabriel Gandolphi

    2010-09-01

    Full Text Available Estudos sobre sistemas reprodutivos têm indicado o predomínio da autoincompatibilidade de ação tardia (AIT em Bignoniaceae, embora poucas espécies tenham sido investigadas e ocorram outros tipos de sistemas reprodutivos na família. O presente estudo objetivou determinar o sistema reprodutivo de T. roseo-alba através de experimentos de polinizações controladas, análise histológica dos eventos posteriores à polinização, verificação do desenvolvimento in situ dos tubos polínicos e testes de germinação de sementes. Apesar de os tubos polínicos penetrarem e fecundarem a maioria dos óvulos em pistilos autopolinizados, o aborto de 100% dos mesmos foi verificado e, embora sua abscisão tenha ocorrido entre o quarto e o sexto dia após o início da antese, observou-se um ligeiro crescimento dos óvulos e do ovário precedendo a abscisão, porém inferior ao crescimento nos pistilos submetidos à polinização cruzada. A endospermogênese inicial e a formação do tubo proembriônico também foram mais lentas nos pistilos autopolinizados. A longevidade dos pistilos autopolinizados foi maior que a de pistilos não polinizados, e a taxa de germinação de sementes foi de 93%, sendo todas as sementes monoembriônicas. Os resultados demonstram que T. roseo-alba é espécie auto-estéril, destituída de poliembrionia e que apresenta AIT pós-zigótica.Breeding system studies have indicated the predominance of late-acting self-incompatibility (LSI in Bignoniaceae, despite the relatively few species investigated, and the occurrence of other kinds of breeding systems in this family. This study aimed to determine the breeding system in T. roseo-alba by means of controlled experimental pollination, histological analysis of post-pollination events, and studies of pistil longevity, in situ pollen tube growth and seed germination. Despite pollen tube penetration and fertilization of most ovules of selfed pistils, 100% of these pistils aborted

  10. Uncorrected land-use planning highlighted by flooding: the Alba case study (Piedmont, Italy

    Directory of Open Access Journals (Sweden)

    F. Luino

    2012-07-01

    Full Text Available Alba is a town of over 30 000 inhabitants located along the Tanaro River (Piedmont, northwestern Italy and is famous for its wine and white truffles. Many important industries and companies are based in Alba, including the famous confectionery group Ferrero.

    The town suffered considerably from a flood that occurred on 5–6 November 1994. Forty-eight percent of the urban area was inundated, causing severe damage and killing nine people. After the flood, the Alba area was analysed in detail to determine the reasons for its vulnerability.

    Information on serious floods in this area since 1800 was gathered from official records, state technical office reports, unpublished documents in the municipal archives, and articles published in local and national newspapers. Maps, plans and aerial photographs (since 1954 were examined to reconstruct Alba's urban development over the last two centuries and the planform changes of the Tanaro River.

    The results were compared with the effects of the November 1994 flood, which was mapped from aerial photographs taken immediately after the flood, field surveys and eyewitness reports.

    The territory of Alba was subdivided into six categories: residential; public service; industrial, commercial and hotels; sports areas, utilities and standards (public gardens, parks, athletics grounds, private and public sport clubs; aggregate plants and dumps; and agriculture and riverine strip. The six categories were then grouped into three classes with different flooding-vulnerability levels according to various parameters. Using GIS, the three river corridors along the Tanaro identified by the Autorità di Bacino del Fiume Po were overlaid on the three classes to produce a final map of the risk areas.

    This study shows that the historic floods and their dynamics have not been duly considered in the land-use planning of Alba. The zones that were most heavily damaged in the 1994 flood were

  11. Uncorrected land-use planning highlighted by flooding: the Alba case study (Piedmont, Italy)

    Science.gov (United States)

    Luino, F.; Turconi, L.; Petrea, C.; Nigrelli, G.

    2012-07-01

    Alba is a town of over 30 000 inhabitants located along the Tanaro River (Piedmont, northwestern Italy) and is famous for its wine and white truffles. Many important industries and companies are based in Alba, including the famous confectionery group Ferrero. The town suffered considerably from a flood that occurred on 5-6 November 1994. Forty-eight percent of the urban area was inundated, causing severe damage and killing nine people. After the flood, the Alba area was analysed in detail to determine the reasons for its vulnerability. Information on serious floods in this area since 1800 was gathered from official records, state technical office reports, unpublished documents in the municipal archives, and articles published in local and national newspapers. Maps, plans and aerial photographs (since 1954) were examined to reconstruct Alba's urban development over the last two centuries and the planform changes of the Tanaro River. The results were compared with the effects of the November 1994 flood, which was mapped from aerial photographs taken immediately after the flood, field surveys and eyewitness reports. The territory of Alba was subdivided into six categories: residential; public service; industrial, commercial and hotels; sports areas, utilities and standards (public gardens, parks, athletics grounds, private and public sport clubs); aggregate plants and dumps; and agriculture and riverine strip. The six categories were then grouped into three classes with different flooding-vulnerability levels according to various parameters. Using GIS, the three river corridors along the Tanaro identified by the Autorità di Bacino del Fiume Po were overlaid on the three classes to produce a final map of the risk areas. This study shows that the historic floods and their dynamics have not been duly considered in the land-use planning of Alba. The zones that were most heavily damaged in the 1994 flood were those that were frequently affected in the past and sites of

  12. CONSTRUINDO UM MODELO CURRICULAR INTEGRADO PARA A EJA/FIC

    Directory of Open Access Journals (Sweden)

    Raimundo Nonato O. Furtado

    2013-11-01

    Full Text Available Esse trabalho apresenta um modelo possível de desenvolvimento estrutural curricular integral, composto a partir da experiência dos autores, com o Projeto Mulheres Mil – Educação, Cidadania e Desenvolvimento Sustentável, Sub-Projeto “Desenvolvimento Comunitário: Impacto na Qualidade de Vida e Ambiental”, firmado pela parceria SETEC/MEC e o Group Collegia, do Quebec, Canadá. O Projeto Mulheres Mil foi inicialmente desenhado para execução da Rede Norte-Nordeste dos ex-CEFETs, hoje Institutos Federais, com execução a partir de 2008, no Instituto Federal da Paraíba, Campus João Pessoa. Teve o objetivo de apoiar, na prática, um dos modelos de políticas de inclusão social, revestido, na forma inicial, pelo Reconhecimento da Aprendizagem Prévia, tendo como alvo pessoas fora da faixa etária da escolaridade regular, trabalhadoras e, sem exceção, mulheres.

  13. Multiple Intelligences within the Cross-Curricular Approach

    Directory of Open Access Journals (Sweden)

    Anthoula Vaiou

    2010-02-01

    Full Text Available The present study was realized in a Greek 6th grade State Primary School class and was based on Howard Gardner’s theory of multiple intelligences, which was first introduced in 1983. More particularly, it was explored to what extent the young learners possess multiple intelligences through the use of a specially-designed questionnaire and a series of interviews. The findings of the above have served as a tool to the construction of a project work based on students’ learning preferences within a cross-curricular framework, easily applicable to the Greek State School curriculum. All learners were activated to participate within a school environment that traditionally promotes linguistic and mathematical skills matching dominant multiple intelligences or a combination of some of them to thematic units already taught by Greek teachers. The suggested project was assessed through observation and student portfolio, showing that the young learners’ multiple intelligences were exploited to a great extent, promoting the learning process satisfactorily. The results of this study can provide a contribution to the literature of multiple intelligences in the Greek reality and suggest a need for further consideration and exploration in the field. Finally, the researcher of this study hopes the present work could function as a springboard for more elaborated studies in the future.

  14. Curricular reform in musculoskeletal medicine: needs, opportunities, and solutions.

    Science.gov (United States)

    Bernstein, Joseph; Alonso, Daniel R; DiCaprio, Matthew; Friedlaender, Gary E; Heckman, James D; Ludmerer, Kenneth M

    2003-10-01

    Musculoskeletal medicine is not taught adequately in American medical schools and the predictable consequences are seen. Students cannot show cognitive mastery of the subject and lack confidence in this topic. To address this, the Academic Orthopaedic Society held a symposium on medical school education at its annual meeting in 2001. There, the panelists presented an analysis of the problem and proposed solutions. Specifically, it was noted that because of the autonomy of the various schools and their varied approaches to teaching, it would be unlikely that one monolithic and mandated plan could be effective on a national basis. Rather, successful reform would comprise a coalition-based effort to define learning objectives, to provide teaching materials, and to create forums for sharing resources. Recruitment of national organizations was thought to be essential. Finally, it was felt that although inadequate education is neither new nor necessarily unique among disciplines, the coming year or two, the beginning of the Bone and Joint decade, was seen to be a particularly auspicious time for attempting curricular reform. PMID:14612660

  15. Deconstructing the I and SLA in ISLA: One curricular approach

    Directory of Open Access Journals (Sweden)

    Ronald P. Leow

    2016-03-01

    Full Text Available Instructed second language acquisition (ISLA has been referenced in the larger field of the SLA literature for over two and a half decades. Currently, there are several theoretical underpinnings accounting for processes assumed to play a role in ISLA and quite an impressive number of studies have empirically addressed some aspect(s of ISLA. Recently, a lengthy and relatively cohesive treatise of this substrand of SLA research in relation to both theoretical, empirical, and pedagogical perspectives has been published in two books (cf. Leow, 2015a; Loewen, 2015, and a new model of the L2 learning process in ISLA has been proposed (Leow, 2015a. These publications are timely and important given that the concept of ISLA not only needs to be clearly defined but also situated contextually. To this end, this article (a revisits current definitions of ISLA in the SLA literature with the aim of identifying specific features of ISLA that underlie such definitions, (b deconstructs ISLA by probing deeper into what comprises the terms instructed and SLA in ISLA, (c provides a brief summary of the cognitive processes and variables postulated by the theoretical underpinnings of ISLA and pertinent empirical research, (d recommends that ISLA be observed from one curricular approach together with its empirical and pedagogical ramifications, and (e provides some measure of direction future ISLA research may follow.

  16. Proyecto curricular institucional: Una alternativa para el cambio

    Directory of Open Access Journals (Sweden)

    Ruth Vallejo

    2002-01-01

    Full Text Available Enfrentar el desafío de la construcción del proyecto curricular institucional representa para la educación de este milenio una prioridad, esto sin lugar a dudas, requiere de un cambio en la estructura organizativa y de gestión en cada plantel; el Currículo Básico Nacional, en marcha, representa un avance significativo, para superar esta situación. Para que esta reforma constituya una alternativa válida, es necesario abordar la formación del docente de forma sistemática, continúa desde su praxis por medio de la investigación-acción, utilizando herramientas metodológicas para el diagnóstico y acompañando todo el proceso con una evaluación institucional que al mismo tiempo que se analiza e implementa permita la formación de los actores involucrados; la revisión y los ajustes permanentes conducen a la construcción de aproximaciones sucesivas que con el trabajo concertado garantizan la viabilidad del proyecto. Se recomienda asumirlo con un carácter cíclico y dinámico para decidir si se puede o no mantener a la luz de los cambios que ocurran dentro y fuera del proceso.

  17. CURRICULAR DESIGN FOR THE CONSTRUCTION OF A PEACE CULTURE

    Directory of Open Access Journals (Sweden)

    Raiza González

    2009-04-01

    Full Text Available This investigation had as purpose from the analysis of the contributions of sciences of the conduct, pedagogical and spiritual, to apply a curricular design for the development of competitions  in the educational one like mediator of a culture of peace in the classroom. study was descriptive, of action-reflection-intervention in the modality of study of case with application of tests you diagnose, observation log, shootings, psicoterapéuticas interviews, techniques and factories, considering the analysis units: documents and   students. The population was represented by the students of the Elective I: mention Sciences and Technology of the Education. The results revealed that educational as mediating of a peace culture must demonstrate competitions of knowing, doing, to coexist and to be; in the field of the Neurolingüística; conflict mediation; familiar constellations; psiconeuroimunología; support psycotherapy; intelligence  interpersonal, emotional and naturista; abilities for the negotiation and cooperation; responsibility, respect, discipline, honesty, gratitude, coherence, empathy, spiritual development,  faith and nonviolence.

  18. Structural identification and bioactivities of red-violet pigments present in Basella alba fruits.

    Science.gov (United States)

    Lin, Shu-Mei; Lin, Bo-Hong; Hsieh, Wan-Mei; Ko, Huey-Jiun; Liu, Chi-Dong; Chen, Lih-Geeng; Chiou, Robin Y-Y

    2010-10-13

    Mature Basella alba L. fruit, with dark blue skin and deep red-violet flesh, is a potential source of natural colorants. Its pigment components and bioactivities deserve particular attention and investigation. In this study, fruit flesh was extracted with 80% methanol (containing 0.2% formic acid) and subjected to solid-phase extraction, semipreparative HPLC isolation, mass spectrophotometric analysis, and structural elucidation. The major red pigment was identified as gomphrenin I. Its quantity increased with the increase of fruit maturity. The gomphrenin I extract yield from ripe fruits was 36.1 mg/100 g of fresh weight. In addition to gomphrenin I, betanidin-dihexose and isobetanidin-dihexose were also detected. The antioxidant activities of gomphrenin I determined by Trolox equivalent antioxidant capacity (TEAC), α,α-diphenyl-β-picrylhydrazyl (DPPH) radical scavenging activity, reducing power, and antioxidative capacity assays were equivalent to 534 μM Trolox, 103 μM butylated hydroxytoluene (BHT), 129 μM ascorbic acid, and 68 μM BHT at 180, 23, 45, and 181 μM, respectively. The anti-inflammatory function was tested at concentrations of 25, 50, and 100 μM in murine macrophages stimulated with lipopolysaccharide (LPS). The results revealed that gomphrenin I suppressed LPS-induced nitric oxide (NO) production in a dose-dependent manner and decreased PGE(2) and IL-1β secretions at the highest concentration tested. The transcriptional inhibitory activities of gomphrenin I on the expression of inflammatory genes encoding iNOS, COX-2, IL-1β, TNF-α, and IL-6 were also observed. It is of merit to identify gomphrenin I as a principal pigment of B. alba fruits and as a potent antioxidant and inflammatory inhibitor. These findings suggest that B. alba fruit is a rich source of betalains and has value-added potential for use in the development of food colorants and nutraceuticals. PMID:20839771

  19. Morphology and histochemistry of glandular trichomes of Orobanche alba Stephan ex Willd

    Directory of Open Access Journals (Sweden)

    Aneta Sulborska

    2014-04-01

    Full Text Available Orobanche alba Stephan ex Willd is an achlorophyllous root parasite rare in Poland. It prefers dry and sunny slopes, xerothermic grasslands and pastures, mountain pastures, light scrubs, and rock fissures and ledges. The hosts of O. alba include Thymus polytrichus A. ern. ex Borbás, Clinopodium vulgare L. and Origanum vulgare L. The tick and fleshy 10-70 cm high stem in this species bears an inflorescence composed of zygomorphic, white or yellow “spotted” flowers covered by purple glandular trichomes. Glandular trichomes of this type are also borne on other parts of the plant, i.e. on the stem, scaly leaves, sepals, filaments, and the style. The secondary metabolites secreted by the glandular trichomes are related to defense of plants against the attack of herbivores and pathogens or act as attractants to pollinators or for fruit dispersal. The micromorphology and histochemistry of the glandular trichomes in O. alba were examined using scanning electron and light microscopes. In order to determine the type of secondary metabolites produced by the trichomes, the flowing histochemical assays were used: Sudan III and neutral red for detection of lipophilic compounds, IKI for detection of starch, and FeCl3 for detection of phenolic compounds. The peltate glandular trichomes of O. alba were characterised by a varied length (0.15‑0.48 mm and different activity phases. The trichome was composed of one larger basal epidermal cell, 1-3 hyaline stalk cells with a striated cuticle, a neck cell with a smooth cuticle on the surface, and a globose head formed of 8-18 secretory cells arranged in a circle. Many stalk cells of the trichomes, particularly those located on the corolla, contained anthocyanins, which give the trichomes dark carmine colour. In turn, the colour of the heads was dependent on trichome age: the heads were brown in older trichomes and yellow in younger hairs. Secretion was produced by both young and older trichomes. It penetrated

  20. Effects of the Methanol Extract of Basella alba L (Basellaceae) on Steroid Production in Leydig Cells

    OpenAIRE

    Carine Travert; Faustin-Pascal T. Manfo; Serge Carreau; Paul Fewou Moundipa; Monsees, Thomas K.; Edouard Akono Nantia

    2011-01-01

    In this study, Leydig cells were purified from 70 day-old Sprague Dawley male rats and incubated with 10 and 100 µg/mL of methanol extract of Basella alba (MEBa) for 4 hours followed by the evaluation of cell viability, steroid (testosterone and estradiol) production, and the level of aromatase mRNA. Results showed that MEBa did not affect Leydig cell viability. At the concentration of 10 µg/mL, MEBa significantly stimulated testosterone and estradiol production (p < 0.01 and p < 0.03, ...

  1. Enhancing Dry Season Production of Indian Spinach (Basella alba) through Fertigation

    OpenAIRE

    AYENI, L.S.; Adedeji, O A; Okubena-Dipeolu, E. A.

    2013-01-01

    Optimum and qualitative production of vegetables in the depleted soils during the dry season are best achieved through irrigation. Two experiments were concurrently conducted in 2010 to determine the effect of irrigated poultry manure on the vegetative growth and nutritional quality of Indian Spinach (Basella alba) in South Western Nigeria. Poultry manure (P) rates at 0 (P0+W), 5 (P1+W), 10 (P2+W), 15 (P3+W) and 20 t ha-1 (P4+W) were each irrigated with 6,000 litres of water per hectare (W) a...

  2. Electron probe microanalysis of fluorine in polluted needle sections of Abies alba

    Energy Technology Data Exchange (ETDEWEB)

    Garrec, J.P.; Lhoste, A.M.

    1976-01-01

    After fumigation with hydrogen fluoride, sections of needles of Abies alba were studied by electron probe microanalysis. The levels of fluoride vary in different tissues: most fluoride was found in the spongy mesophyll and the palisade tissues as a function of the distance from the cells of entry and the paths of translocation of fluoride. These results support the view that the differential responses of various tissues of a leaf to fumigation with HF depend on the localization of the tissues rather than on a specific response by a particular tissue to fluoride. 15 references, 6 figures.

  3. Pityriasis Alba--Common Disease, Enigmatic Entity: Up-to-Date Review of the Literature.

    Science.gov (United States)

    Miazek, Nina; Michalek, Irmina; Pawlowska-Kisiel, Malgorzata; Olszewska, Malgorzata; Rudnicka, Lidia

    2015-01-01

    Pityriasis alba (PA) is a skin disorder that affects children and adolescents. Although it is common worldwide, its incidence is markedly higher in darker skin phototypes. Its characteristic features include an extended, multistage course and spontaneous remissions and recurrences. Preceded by erythematous changes, patches of hypopigmented skin of up to a few centimeters in diameter appear on the upper body. Pruritus may accompany it. Even though its etiology is unknown, possible reported triggering factors include sunlight, beauty treatments, and microorganisms, among others. Calcineurin inhibitors play the most crucial role in PA pharmacotherapy. PA often coexists with atopic dermatitis and is considered one of its milder forms.

  4. On the phase characterization of the residues of the plant Comandante Pedro Soto Alba

    International Nuclear Information System (INIS)

    It has been studied of the phases present in the solid industrial residues of the plant Comandante Pedro Soto Alba (Moas's tails). It is done a preliminary qualitative characterization by X ray diffraction. It is done a characterization by differential and gravimetric thermal analysis and a quantitative valuation of SO3 and H2O present in the samples. A complex of S and Al is detected. The results of SO3 are compared with those obtained by the gravimetric method to verify those of Al, an elemental analysis by neutron activation was solicitated. A formula for the complex of S and Al is proposed. (author)

  5. De novo Transcriptome Analysis of Sinapis alba in Revealing the Glucosinolate and Phytochelatin Pathways

    Science.gov (United States)

    Zhang, Xiaohui; Liu, Tongjin; Duan, Mengmeng; Song, Jiangping; Li, Xixiang

    2016-01-01

    Sinapis alba is an important condiment crop and can also be used as a phytoremediation plant. Though it has important economic and agronomic values, sequence data, and the genetic tools are still rare in this plant. In the present study, a de novo transcriptome based on the transcriptions of leaves, stems, and roots was assembled for S. alba for the first time. The transcriptome contains 47,972 unigenes with a mean length of 1185 nt and an N50 of 1672 nt. Among these unigenes, 46,535 (97%) unigenes were annotated by at least one of the following databases: NCBI non-redundant (Nr), Swiss-Prot, Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway, Gene Ontology (GO), and Clusters of Orthologous Groups of proteins (COGs). The tissue expression pattern profiles revealed that 3489, 1361, and 8482 unigenes were predominantly expressed in the leaves, stems, and roots of S. alba, respectively. Genes predominantly expressed in the leaf were enriched in photosynthesis- and carbon fixation-related pathways. Genes predominantly expressed in the stem were enriched in not only pathways related to sugar, ether lipid, and amino acid metabolisms but also plant hormone signal transduction and circadian rhythm pathways, while the root-dominant genes were enriched in pathways related to lignin and cellulose syntheses, involved in plant-pathogen interactions, and potentially responsible for heavy metal chelating, and detoxification. Based on this transcriptome, 14,727 simple sequence repeats (SSRs) were identified, and 12,830 pairs of primers were developed for 2522 SSR-containing unigenes. Additionally, the glucosinolate (GSL) and phytochelatin metabolic pathways, which give the characteristic flavor and the heavy metal tolerance of this plant, were intensively analyzed. The genes of aliphatic GSLs pathway were predominantly expressed in roots. The absence of aliphatic GSLs in leaf tissues was due to the shutdown of BCAT4, MAM1, and CYP79F1 expressions. Glutathione was extensively

  6. Food of the Barn Owl Tyto alba in the Yahmool Area, Northern Syria

    OpenAIRE

    SHEHAB, Adwan Hussien; CHARABI, Safwan Mohamed AL

    2006-01-01

    Pellets regurgitated by the barn owl (Tyto alba) were collected in July 2000 from Yahmool Agricultural research station, 50 km north of Aleppo. Pellet analysis yielded 657 individual prey representing 7 species of rodents, 2 shrews, 1 bird, an unidentified lizard and at least 7 species of insects. By frequency, rodents constituted 84.9% of the prey items, shrews 9.6%, birds 1.5%, insects 3.7% and lizards 0.3%. The social vole, Microtus socials, was the main food of the barn owl, constituting ...

  7. Optimization of the soft x-ray transmission microscopy beamline at the ALBA light source

    Science.gov (United States)

    Sorrentino, Andrea; Pereiro, Eva; Valcárcel, Ricardo; Ferrer, Salvador; Nicolas, Josep

    2013-09-01

    Mistral is the soft X-ray full field microscopy beamline at the ALBA light source. The beamline is designed to have large source acceptance and to provide constant magnification at the exit slit for photon energies between 270 and 2600 eV. The monochromator is a variation of the Petersen plane grating monochromator in which a variable line spacing grating is used to maintain the beam focused at the exit slit, independently of the fixed focus constant, and to cancel aberrations. We present the alignment strategy used to compensate errors of the optical elements, and report about the commissioning results.

  8. Comparison of the pathogenicity, growth, sporulation and morphology of Pezicula alba Guthrie (Gloeosporium album Osterw.

    Directory of Open Access Journals (Sweden)

    H. Borecka

    2013-12-01

    Full Text Available Sixteen isolates of Pezicula alba Guthr. were examined. The intensity of growth on various media, pathogenicity to apple fruits and twigs, colour of cultures and size of conidia were measured. Some isolates are pathogenic to fruits, some others to twigs; one isolate (only no. 19 is pathogenic to both twigs and fruits; many isolates are not - pathogenic at all. Culture growth, sporulation and size of conidia are not correlated with the pathogenicity of the isolate. The mean size of conidia is 21.29µm x 3.48µm.

  9. Pityriasis Alba--Common Disease, Enigmatic Entity: Up-to-Date Review of the Literature.

    Science.gov (United States)

    Miazek, Nina; Michalek, Irmina; Pawlowska-Kisiel, Malgorzata; Olszewska, Malgorzata; Rudnicka, Lidia

    2015-01-01

    Pityriasis alba (PA) is a skin disorder that affects children and adolescents. Although it is common worldwide, its incidence is markedly higher in darker skin phototypes. Its characteristic features include an extended, multistage course and spontaneous remissions and recurrences. Preceded by erythematous changes, patches of hypopigmented skin of up to a few centimeters in diameter appear on the upper body. Pruritus may accompany it. Even though its etiology is unknown, possible reported triggering factors include sunlight, beauty treatments, and microorganisms, among others. Calcineurin inhibitors play the most crucial role in PA pharmacotherapy. PA often coexists with atopic dermatitis and is considered one of its milder forms. PMID:26477326

  10. Brutbiologie und Wanderungen einer Schleiereulenpopulation (Tyto alba) im hessischen Main-Kinzig-Kreis

    OpenAIRE

    Jahnel, Mathias

    2005-01-01

    Die Schleiereule (Tyto alba) ist eine in fast allen Regionen der Erde vorkommende Eulenart. In Mitteleuropa erreicht sie die nördlichste Grenze ihres Verbreitungsgebiets. Man trifft sie hier in tiefergelegenen, waldarmen Gegenden an. Eine Arbeitsgruppe der Hessischen Gesellschaft für Ornithologie und Naturschutz (HGON) und des Deutschen Bund für Vogelschutz (DBV) führt im hessischen Main-Kinzig-Kreis seit 1976 Maßnahmen zum Schutz der Schleiereulen durch. Dazu gehören das Anbringen von Brutki...

  11. De novo transcriptome analysis of Sinapis alba in revealing the glucosinolate and phytochelatin pathways

    Directory of Open Access Journals (Sweden)

    Xiaohui eZhang

    2016-03-01

    Full Text Available Sinapis alba is an important condiment crop and can also be used as a phytoremediation plant. Though it has important economic and agronomic values, sequence data and the genetic tools are still rare in this plant. In the present study, a de novo transcriptome based on the transcriptions of leaves, stems and roots was assembled for S. alba for the first time. The transcriptome contains 47,972 unigenes with a mean length of 1,185 nt and an N50 of 1,672 nt. Among these unigenes, 46,535 (97% unigenes were annotated by at least one of the following databases: NCBI non-redundant (Nr, Swiss-Prot, Kyoto Encyclopedia of Genes and Genomes (KEGG pathway, Gene Ontology (GO, and Clusters of Orthologous Groups of proteins (COGs. The tissue expression pattern profiles revealed that 3,489, 1,361 and 8,482 unigenes were predominantly expressed in the leaves, stems and roots of S. alba, respectively. Genes predominantly expressed in the leaf were enriched in photosynthesis- and carbon fixation-related pathways. Genes predominantly expressed in the stem were enriched in not only pathways related to sugar, ether lipid and amino acid metabolisms but also plant hormone signal transduction and circadian rhythm pathways, while the root-dominant genes were enriched in pathways related to lignin and cellulose syntheses, involved in plant-pathogen interactions, and potentially responsible for heavy metal chelating and detoxification. Based on this transcriptome, 14,727 simple sequence repeats (SSRs were identified, and 12,830 pairs of primers were developed for 2,522 SSR-containing unigenes. Additionally, the glucosinolate (GSL and phytochelatin metabolic pathways, which give the characteristic flavor and the heavy metal tolerance of this plant, were intensively analyzed. The genes of aliphatic GSLs pathway were predominantly expressed in roots. The absence of aliphatic GSLs in leaf tissues was due to the shutdown of BCAT4, MAM1 and CYP79F1 expressions. Glutathione was

  12. A regulatory approach on low temperature induced enzymatic and anti oxidative status in leaf of Pui vegetable (Basella alba)

    OpenAIRE

    Shahidul Haque, Md.; Monirul Islam, Md.; Abdur Rakib, Md.; Asraful Haque, Md.

    2013-01-01

    Basella alba is a soft green vegetable, survives in adverse environmental circumstances, for example, very cold temperature although the mechanism and the temperature sensitivity in this species are not clarified. Pot experiment for cultivation of B. alba was carried out to examine the effects of low temperature on the synthesis of two enzymes, polyphenol oxidase (PPO) and peroxidase (POD) in leaf of this plant. They were exposed to 8 °C for 24 h, 48 h and 72 h periods and the respective cont...

  13. Estudio de la satisfacción y motivación de los albañiles

    OpenAIRE

    CABANES RUBIRA, IGNACIO

    2011-01-01

    Trabajo científico técnico. Se pretende justificar el interés e importancia que tiene la motivación y satisfacción laboral en el sector de la construcción, más concretamente en el gremio de los albañiles. Con este proyecto de investigación se pretenden conocer de primera mano las experiencias y vivencias de los albañiles de la construcción en su trabajo

  14. Eco-geographical variation in the diet of the Barn Owl (Tyto alba) in mountainous areas of France

    OpenAIRE

    Halliez Guillaume; Becel Clémence Marie Lucie; Canella Victoria

    2015-01-01

    Because of the worldwide distribution of the Barn Owl (Tyto alba) and the easily way to find its pellets, it is often used to diet studies. To investigate the eco-geographical impact of mountainous areas on its diet, we conducted studies in the Jura, Alpes, Central and Pyrénées mountains and we also did pellet analysis from 8 sites in the Jura mountains. Analysis of the tooth and skull content of pellets allowed us to draw up two types of change in the diet of Tyto alba in correlation with mo...

  15. Doctorados, investigación y sociedad.

    OpenAIRE

    Gabriel Antonio Ramírez Méndez

    2013-01-01

    El texto incorpora los preliminares y el Editorial correspondientes a este número de la Revista Universidad & Empresa (U&E).   La editorial presenta el programa doctoral en ciencias de la dirección de la Universidad del Rosario y su relación con la investigación de vanguardia que se realiza en esta universidad. Explica los fundamentos del programa y su relación con la perdurabilidad de las organizaciones, señalando sus bases conceptuales, teóricas y prácticas y cómo éstas ofrecen un a...

  16. A formação prática de professores no estágio curricular Practical curricular training of teachers

    Directory of Open Access Journals (Sweden)

    Helena Maria dos Santos Felício

    2008-01-01

    Full Text Available Partindo da premissa de que a dimensão prática deve ser considerada na formação inicial de professores, entendemos que o Estágio Curricular, se bem fundamentado, estruturado e orientado, configura-se como um momento relevante na perspectiva curricular do processo de formação prática dos futuros professores. Dessa forma, o presente artigo apresenta algumas reflexões e discussões, oriundas de uma investigação qualitativa, sobre a importância e o papel do Estágio Curricular na formação prática de alunos. Os sujeitos desta pesquisa são alunos concluintes do Curso Normal Superior da Universidade do Vale do Paraíba (UNIVAP. A partir da interpretação de diferentes autores(LIMA, 2001; TARDIF, 2002; PIMENTA, 2001; GÓMEZ, 2000, compreendemos a prática enquanto práxis, uma vez que, permeada por um processo de reflexão, ela pode ser construída e reconstruída, objetivando a transformação da realidade escolar. Sendo assim, evidenciamos, nos relatórios apresentados e nos discursos dos alunos, as aprendizagens práticas consideradas construídas durante o estágio. Analisamos os dados recolhidos, à luz da teoria estudada sobre a formação prática e profissional dos professores. Identificamos os aspectos favoráveis e desfavoráveis da realização do estágio curricular na dimensão de ser um espaço/tempo, também destinado à construção de conhecimentos práticos na formação dos professores. E, finalmente, propomos novas perspectivas para a orientação e realização do estágio curricular na formação de professores, centradas na relevância da formação prática e na articulação entre todas as disciplinas do curso de formação.Based on the premise that the practical dimension must be considered in the initial training of teachers, we understand that curricular training, if well founded, structured and oriented, is relevant to the curricular outlook of the practical training process for future teachers. This article

  17. Creating curricular change: needs in grades 8 12 earth science

    Science.gov (United States)

    Marks, Steven K.; Vitek, John D.; Giardino, John R.; McQueen, Kay C.

    2002-10-01

    The realization that we do not control nature is often associated with devastating loss of life and property. Apparently, humans do not learn from their mistakes, because human tragedies seem to happen repeatedly and minimal modification of human behavior appears to transpire. Because people do not understand the dynamic nature of Earth and Earth processes, specific education to understand and to comprehend the cause and effect of a dynamic earth is needed. The strong economic base and a high literacy rate within the USA should contribute to the ability of the K-12 educational system to create more appropriate human behavior and response to processes shaping Earth. Today major efforts are underway in government agencies, professional societies, universities and by individuals to change what and how students learn about the environment. Curricular reform has been established as new national standards for what students should learn in science in grades K-12. Just having standards, however, does not guarantee implementation, improved teaching by teachers, or increased understanding by students. Science faculties must accept the challenge to provide the pedagogical education for K-12 teachers; teachers must be trained and empowered to implement change; this change must ripple throughout the entire K-12 system. Workshops and innovative materials to support renovations in the curricula are essential to affect change. The World Wide Web will be a major help in information dissemination. However, for success to be achieved, local involvement is fundamental. People with expertise about Earth can have the greatest impact on effecting change by helping neighbors acquire knowledge of the dynamic environment of Earth. The same people (namely you) must become pro-active in K-12 education.

  18. Competency-based curricular design to encourage significant learning.

    Science.gov (United States)

    Hurtubise, Larry; Roman, Brenda

    2014-07-01

    Most significant learning (SL) experiences produce long-lasting learning experiences that meaningfully change the learner's thinking, feeling, and/or behavior. Most significant teaching experiences involve strong connections with the learner and recognition that the learner felt changed by the teaching effort. L. Dee Fink in Creating Significant Learning Experiences: An Integrated Approach to Designing College Course defines six kinds of learning goals: Foundational Knowledge, Application, Integration, Human Dimension, Caring, and Learning to Learn. SL occurs when learning experiences promote interaction between the different kinds of goals, for example, acquiring knowledge alone is not enough, but when paired with a learning experience, such as an effective patient experience as in Caring, then significant (and lasting) learning occurs. To promote SL, backward design principles that start with clearly defined learning goals and the context of the situation of the learner are particularly effective. Emphasis on defining assessment methods prior to developing teaching/learning activities is the key: this ensures that assessment (where the learner should be at the end of the educational activity/process) drives instruction and that assessment and learning/instruction are tightly linked so that assessment measures a defined outcome (competency) of the learner. Employing backward design and the AAMC's MedBiquitous standard vocabulary for medical education can help to ensure that curricular design and redesign efforts effectively enhance educational program quality and efficacy, leading to improved patient care. Such methods can promote successful careers in health care for learners through development of self-directed learning skills and active learning, in ways that help learners become fully committed to lifelong learning and continuous professional development. PMID:24981665

  19. Seeing The "New Forest": A Visual Curricular Experiment

    Science.gov (United States)

    Garramone, Pariss Nicola

    In contemporary Western contexts, human interaction with and interpretation of nature is a perpetually mediated process. Understandings and engagements with natural environments are informed by and often overlaid with meanings derived from representations. In other words, representations help constitute human relationships with nature. Thus learning how representations shape human understandings and experiences of nature and the resulting social, political, and ecological impact of these mediated relationships has emerged as an important field of inquiry within environmental education. This dissertation examines how a critical, self-reflexive act of looking at photographs can challenge an individual's concepts of nature/culture, real/imaginary, and self/other. The project engages in a curricular experiment where the researcher explores how photography meditates her abstract and embodied understandings of specific natural environments. A critical, self-reflexive approach to aesthetic engagement with photographs moves beyond simply deciphering or decoding representations; it incorporates the learner's own narrative and embodied responses to the photographic representations being explored. This approach also recognizes that pedagogy has a transformative effect; both the learner and the representations being explored are transformed through the process of engagement. In this dissertation, a selection of iconic photographs of Canadian tree planting from the collection of the National Gallery of Canada are looked at: Lorraine Gilbert's (1987-2004) series "Shaping the New Forest" and Sarah Anne Johnson's (2005) work "The Tree Planting Project." The aim of this project is twofold: to unravel how these photographs construct and transform knowledge of and relationships with the environment in Canada, and to demonstrate a model of environmental inquiry that can be integrated into critical environmental education curricula.

  20. Questioning collectives and agencies: a commentary on curricular choices

    Science.gov (United States)

    Arnold, Jenny

    2015-06-01

    This commentary explores theoretical alternatives for viewing the problem identified by Volny Fages and Virginie Albe in their article entitled Social issues in nanoscience and nanotechnology Master's degrees: The socio-political stakes of curricular choices. An approach to social research is suggested that would render visible the associations maintaining the states of affairs depicted by Fages and Albe. In their research, Fages and Albe identified conceptions of the relationship between scientific endeavour and social concerns to be at the root of "choices" made by coordinators of Masters programs in nano science and technology in universities selected for their study. Albe and Fages, insiders in the sense that they take responsibility for a particular program within one such course, convey their belief that, "future scientists need to identify, accept and take on board the social responsibilities linked to their own practice of science, and to work collectively for a more democratic division of power regarding socio-technical choices". However, many of the Master's programs reviewed in their research were reported as providing limited opportunities for their students to critically engage with social aspects of scientific work. This commentary questions the notion of "choices" used in their research and proposes Actor-Network Theory as a theoretical framework open to the existence of various human and non-human agencies at work when a "choice" is made. The aim of the commentary is to further Fages and Albe's agenda by calling for understanding and ultimately a reassembling of the state of affairs in a way that would be acceptable to those invested.

  1. Competency-based curricular design to encourage significant learning.

    Science.gov (United States)

    Hurtubise, Larry; Roman, Brenda

    2014-07-01

    Most significant learning (SL) experiences produce long-lasting learning experiences that meaningfully change the learner's thinking, feeling, and/or behavior. Most significant teaching experiences involve strong connections with the learner and recognition that the learner felt changed by the teaching effort. L. Dee Fink in Creating Significant Learning Experiences: An Integrated Approach to Designing College Course defines six kinds of learning goals: Foundational Knowledge, Application, Integration, Human Dimension, Caring, and Learning to Learn. SL occurs when learning experiences promote interaction between the different kinds of goals, for example, acquiring knowledge alone is not enough, but when paired with a learning experience, such as an effective patient experience as in Caring, then significant (and lasting) learning occurs. To promote SL, backward design principles that start with clearly defined learning goals and the context of the situation of the learner are particularly effective. Emphasis on defining assessment methods prior to developing teaching/learning activities is the key: this ensures that assessment (where the learner should be at the end of the educational activity/process) drives instruction and that assessment and learning/instruction are tightly linked so that assessment measures a defined outcome (competency) of the learner. Employing backward design and the AAMC's MedBiquitous standard vocabulary for medical education can help to ensure that curricular design and redesign efforts effectively enhance educational program quality and efficacy, leading to improved patient care. Such methods can promote successful careers in health care for learners through development of self-directed learning skills and active learning, in ways that help learners become fully committed to lifelong learning and continuous professional development.

  2. Selection of new clones of linalool chemotype from genetic recombination in Lippia alba

    Directory of Open Access Journals (Sweden)

    Elcio Rodrigo Rufino

    2012-01-01

    Full Text Available The aromatic and medicinal species Lippia alba is vigorous and rugged native to the South America (Atlantic Rainforest. Because it is an allogamous and self-incompatible species, natural populations have high morphological and chemical variability. This work had as objective to conduct a preliminary screening to identify new promising clones from a novel (recombinant base population of Lippia alba with regard to its agronomic and phytochemical traits, using the linalool oil or chemotype as model. The two superior linalool clones, obtained by collection, were used as controls. Traits evaluated included: dry mass of leaves (DML, oil yield percentage (EOY%, oil production per plant (OP, and linalool percentage (LN%. Forty linalool chemotype clones were evaluated in three experiments, in a random block design with four replicates and four cuttings (clones per plot. Besides means comparisons, multivariate analysis was used in order to aid in the preliminary selection of clones. There were positive correlations from moderate to strong for DML vs. EOY%, OP vs. EOY% and DML vs. OP. Linalool clones superior or similar to both controls were identified for the DML, EOY%, OP, and LN% traits (univariate analyses, aimed at further validating experimentation. Five distinct groups were defined in the cluster analysis (UPGMA, each containing subgroups as well.

  3. Intergeneric Somatic Hybridization Between Brassica napus L. And Sinapis alba L.

    Institute of Scientific and Technical Information of China (English)

    You-Ping WANG; Karin SONNTAG; Eicke RUDLOFF; Jian-Min CHEN

    2005-01-01

    Electrically induced protoplast fusion was used to produce somatic hybrids between Brassica napus L. and Sinapis alba L. Seven hybrids were obtained and verified by the simple sequence repeat and cleaved amplified polymorphic sequence analysis of the genefael, indicating that the characteristic bands from S. alba were present in the hybrids. The hybridity was also confirmed by chromosome number counting because the hybrids possessed 62 chromosomes, corresponding to the sum of fusion-parent chromosomes. Chromosome pairing at meiosis was predominantly normal, which led to high pollen fertility,ranging from 66% to 77%. All hybrids were grown to full maturity and could be fertilized and set seed after self-pollination or back-crosses with B. napus. The morphology of the hybrids resembled characteristics from both parental species. An analysis of the fatty acid composition in the seeds of F1 plants was conducted and the seeds were found to contain different amounts of erucic acid, ranging from 11.0% to 52.1%.

  4. Reproductive isolation between sympatric sister species, Mussaenda kwangtungensis and M. pubescens var. alba

    Institute of Scientific and Technical Information of China (English)

    Zhonglai Luo; Tingting Duan; Shuai Yuan; Shi Chen; Xiufeng Bai; Dianxiang Zhang

    2015-01-01

    Reproductive isolation defines the biological species concept and plays a key role in the formation and maintenance of species. The relative contributions of different isolating stages has been suggested to be closely associated with phylogenetic relatedness. Few studies have focused on the relative contributions of pre- versus post-zygotic mechanisms, and even fewer have been conducted under strict phylogenetic frameworks. Pre-and post-zygotic reproductive isolation stages have been investigated in the sister species Mussaenda kwangtungensis and M. pubescens var. alba. The two species have partly overlapping distribu-tion ranges and flowering times, while the principal pollinators differed strikingly for them, demonstrating strong pre-zygotic isolations. Natural hybrids were detected by simple sequence repeat markers and their maternal parents were identified based on chloroplast gene sequen-ces. Five out of 81 individuals were suggested to be hybrids that fall into the categories F2, BC1, and BC2 by the NewHybrids analysis. Interspecific crossings resulted in significantly reduced fruit set and seed germination rates. Phylogenetic analysis revealed short Kimura-2-parameter distance between M. kwangtungensis and M. pubescens var. alba. These findings strongly supported the hypothesis that for species with a closer phylogenetic relationship, pre-zygotic isolation plays an important part in limiting gene exchange in sympatric areas.

  5. Pharmacological effects of ethanol extract of Egyptian Artemisia herba-alba in rats and mice

    Institute of Scientific and Technical Information of China (English)

    Heba Mohammed Ibrahim Abdallah; Nawal E.L. Sayed Gomaa

    2016-01-01

    Objective: To investigate some pharmacological effects including gastroprotective, anti-inflammatory, analgesic, antipyretic and in vitro antioxidant effects of Artemisia herba-alba extract in different experimental models. Methods: Inflammation was induced in rat paw by subcutaneous injection of 1% (v/v) carrageenan solution. Writhes was induced in mice by intraperitoneal injection of 0.6%(v/v) acetic acid solution. Pyrexia was induced using Brewer's yeast suspension. Gastric lesion was induced in rats by oral administration of 99% ethanol. The anti-inflammatory, analgesic, antipyretic and gastroprotective activities of Artemisia herba-alba extract were investigated respectively. In vitro antioxidant effect was investigated using DPPH free radical. Results: The plant extract showed anti-inflammatory effect in carrageenan-induced paw edema in rats, analgesic effect against acetic acid-induced writhing, and antipyretic ac-tivity in Brewer's yeast model of pyrexia. Besides, it was shown to be a gastroprotective agent against ethanol-induced gastric ulcers. The plant also exhibited a free radical scavenging potential in an in vitro antioxidant study using DPPH. Conclusions: The results validate the use of the investigated plant in traditional medicine for different ailments.

  6. New diketopiperazine derivatives from a deep-sea-derived Nocardiopsis alba SCSIO 03039.

    Science.gov (United States)

    Zhang, Qingbo; Li, Sumei; Chen, Yuchan; Tian, Xinpeng; Zhang, Haibo; Zhang, Guangtao; Zhu, Yiguang; Zhang, Si; Zhang, Weimin; Zhang, Changsheng

    2013-01-01

    The strain SCSIO 03039 was isolated from a sediment sample in the Indian Ocean and was characterized as a Nocardiopsis alba species on the basis of its 16S rRNA gene sequence. Seven diketopiperazines (DKPs), including two new DKPs nocazines D (2a) and E (2b), and five known DKPs (1, 3-6), were isolated from N. alba SCSIO 03039, along with two known compounds 2-methoxy-1,4-naphthoquinone (7) and 1-hydroxy-4-methoxy-2-naphthoic acid (8). Their structures were elucidated by mass and NMR spectroscopic analyses. The structure of methoxyneihumicin (1), previously proposed in a conference poster lacking publicly available experimental data, was validated for the first time by detailed NMR analyses and X-ray diffraction study. The two enantiomers nocazines D (2a) and E (2b) were isolated as a mixture. Compounds 3 and 4 were only known as synthetic compounds before. Methoxyneihumicin (1) exhibited in vitro cytotoxicities against MCF-7 and SF-268 with IC₅₀ values of 4.6 and 12.7 μM, respectively, better than those of 6 (22.0 and 20.6 μM). The other compounds showed less pronounced cytotoxities against three tested human cancer cell lines and no compounds displayed antibacterial activities toward four indicator strains.

  7. PLASTICIDAD FENOTÍPICA DE Lippia alba Y Lippia origanoides (VERBENACEAE EN RESPUESTA A LA DISPONIBILIDAD DE LUZ Phenotypic Plasticity of Lippia alba and Lippia origanoides (Vervenaceae in Response to Availability of Light

    Directory of Open Access Journals (Sweden)

    EDWIN PARRA TORRES

    Full Text Available La distribución de la especies es usualmente relacionada con la magnitud de la plasticidad fenotípica (PF. Con el fin de examinar la posible relación entre la magnitud de la PF y la amplitud ecológica en respuesta a la disponibilidad de luz, este trabajo evaluó la PF a través de la ontogenia en clones de Lippia alba y Lippia origanoides, especies congenéricas que presentan diferencias en su distribución. Clones de cada especie fueron distribuidos aleatoriamente en tres tratamientos, baja (33%, media (53%, y alta (100% disponibilidad lumínica. Se evaluó la PF de caracteres morfológicos y de asignación de biomasa a través de la ontogenia por medio de un análisis de varianza (ANAVA y la comparación interespecífica se realizó a través del índice de plasticidad fenotípica (RDPI. L. alba y L. origanoides presentaron variación de la plasticidad a través de la ontogenia en varios de los caracteres estudiados. La comparación interespecífica a través del RDPI mostró que la mayor PF de L. alba sobre L. origanoides en algún estado de la ontogenia no fue consistente ni uniforme a través de esta. Estos resultados sugieren una débil asociación entre la magnitud de la PF en respuesta a la disponibilidad lumínica. Además, indican que la mayor distribución de L. alba, se debe a un mayor desempeño en la tasa de crecimiento relativa y consecuentemente a una mayor acumulación de biomasa total, que posiblemente, le permiten alcanzar rápidamente su madurez sexual y así la colonización de nuevas áreas.The distribution of the plant species is usually related to the magnitude of the phenotypic plasticity (PF. With the purpose of to stablish the possible relationship between the magnitude of the PF and the ecological breadth in response to light availability, the PF during the ontogeny in clones of Lippia alba and Lippia origanoides was evaluated. Both species are congeneris and show differences in their distribution. Three random

  8. El diseño curricular y la planeación estrategica

    OpenAIRE

    Juan Silvestre Aranda Barradas; Edgar Salgado Manjarrez

    2005-01-01

    El diseño curricular es un proceso que deben efectuar las instituciones de educación superior con cierta frecuencia a fin de ampliar o actualizar su oferta educativa. El resultado del diseño curricular es el documento donde se explicitan la organización, operación y evaluación integral de la formación propuesta, esto es, el currículo. La fase de planeación en el diseño curricular es de suma importancia porque de ésta depende la correcta operación, o en todo caso la operación reduciendo riesgo...

  9. Los programas de diversificación curricular desde la transversalidad

    Directory of Open Access Journals (Sweden)

    María Ángeles PASCUAL SEVILLANO

    2009-11-01

    Full Text Available RESUMEN: La enseñanza en la diversidad requiere ante todo de una innovación curricular que apueste por un proceso y contexto educativo que se adapte al individuo. Introducir en la enseñanza los intereses provocados de la propuesta de los ejes transversales no significa desplazar las materias curriculares, sino diseñar los objetivos y contenidos propios de las áreas curriculares para que puedan adquirirse y desarrollarse desde la transversalidad, permitiendo así un mayor acercamiento y contextualización con la realidades cada estudiante y con los conflictos y problemas del mundo contemporáneo y, a la vez dotándolos de un valor funcional inmediato respecto a la comprensión y posible transformación de esa realidad y de esos conflictos. En este sentido los aspectos que tratan de incorporarse no son algo añadido, pero si novedoso desde el momento en que se introduce una nueva perspectiva, y se evita el riesgo, a veces tan mencionado, de que la transversalidad aparezca sutilmente desdibujada. Los ejes transversales bajo este nuevo planteamiento implicarán una importante transformación de las áreas curriculares de acuerdo con las expectativas de los tiempos presentes y la adecuación a las posibilidades de comprensión del alumnado. Esto será así, si los enfoques transversales, que constituyen el centro de las actuales preocupaciones sociales de las áreas curriculares, se convierten en el núcleo en torno a los cuales gira la programación de las áreas curriculares, las cuales se convertirán entonces en los instrumentos necesarios para la consecución de las finalidades deseadas.ABSTRACT: The Education in the diversity requires of a curricular innovation that bet on a process and educational context that is adapted to the individual. To introduce in the teaching the provoked interest of the proposal of the transverse shafts does not mean to displace the curricular matters, and yes to design the objectives and own contents of the

  10. INNOVACION CURRICULAR EN TURISMO: UN CAMPO DE ESTUDIO Y REFERENTES PARA LA FORMACIÓN UNIVERSITARIA

    Directory of Open Access Journals (Sweden)

    Lucía M. Collado Medina

    2013-01-01

    Full Text Available El artículo presenta un panorama de la investigación curricular en turismo reportada en México y otros países, principalmente latinoamericanos. Se definen tendencias, impactos, alcances, pautas de problemáticas emergentes, y referentes para aclarar enfoques y modelos de la formación profesional e innovación curricular de este campo. Con base en el método de mapeo se seleccionaron y valoraron las fuentes que sustentan este estudio, mediante las cuales se plantean los retos para la construcción de modelos curriculares innovadores. Se vislumbran nuevos paradigmas inter y transdisciplinarios para abordar curricularmente el caso del turismo. Con respecto a lo anterior, se concluye tomar en cuenta supuestos epistemológicos congruentes con la complejidad y la incertidumbre que subyacen a los modelos de formación en turismo, pertinentes al entorno social y humano.

  11. EFFECTS OF LIGHT AND TEMPERATURE ON Tabebuia serratifolia (Vahl Nich,Tabebuia chrysotricha (Mart. ex DC. Standl. AND Tabebuia roseo-alba (Ridl Sand – Bignoniaceae SEED GERMINATION

    Directory of Open Access Journals (Sweden)

    Débora Leonardo dos Santos

    2010-08-01

    Full Text Available Tabebuia serratifolia, Tabebuia chrysotricha and Tabebuia roseo-alba (Bignoniaceae, are an important ornamental and wood trees in Brasil. The effects of light and temperature in the  germination of Tabebuia serratifolia, Tabebuia chrysotricha and Tabebuia roseo-alba seeds were studied in the present work. The results indicated that the species present light insensitive seeds the and optimum temperature was between 20° and 30°C, the maximum temperature between 35° and 40°C and minimal temperature between 10° and 15°C for Tabebuia chrysotricha and Tabebuia roseo-alba and below 10°C for Tabebuia serratifolia.

  12. A GLIMPSE ON THE DIET OF TYTO ALBA (SCOPOLI 1769) AND ASIO OTUS (LINNAEUS, 1758) FROM THE WETLANDS OF WESTERN ROMANIA

    OpenAIRE

    IOAN DUMA; ZOLTAN BOROS; IORDACHE ION

    2009-01-01

    The diet of Tyto alba (Scopoli 1769) and Asio otus (Linnaeus, 1758) was analyzed by studying pellets collected from Dumbrava and Lugoj localities (Timis County, Romania). We have found that in the winter of 2007-2008 shrews made up 38.95% from the diet of Tyto alba that were hunting around Dumbrava locality. Although rodents were still the main prey items found in the pellets of Tyto alba the ratio between them and shrews was of 1.56:1. Among the Soricidae, Crocidura suaveolens represented a ...

  13. Teoria curricular crítica: os dilemas (e contradições dos educadores críticos

    Directory of Open Access Journals (Sweden)

    José Augusto Pacheco

    2001-01-01

    Full Text Available The critical curricular theory is debated in this article. We will focus mainly in our understanding of some written texts in the field of the critical educational studies. It is our intention to suggest a conceptual background to the critical curricular theory on the basis of several perspectives which seek to change more traditional views of schooling.

  14. Curricular Units: Powerful Tools to Connect the Syllabus with Students’ Needs and Interests

    Directory of Open Access Journals (Sweden)

    Ariza Ariza Aleida

    2004-08-01

    Full Text Available A basic component of any language program is the construction of the curriculum. There is a variety of approaches to curriculum planning and implementation from the technical production perspective to the critical view. The current article emerged from the analysis of the syllabus in a Basic English course in the undergraduate program at Universidad Nacional de Colombia and the design and implementation of a curricular unit. Such unit proved to be a powerful tool to connect what was set in the program, what students needed in terms of language and what they were interested in terms of culture. Key words: Curriculum, Curricular Unit Platform, Constructivism, Teaching- Communicative Language, Task-Based Approach Un componente esencial en un programa de idiomas es la construcción del currículo. Existe una gran variedad de enfoques en términos del diseño y la implementación del currículo; desde una perspectiva reducida a la producción técnica, hasta una visión crítica y transformadora. El presente artículo se gesta a partir tanto del análisis de un programa correspondiente al curso Inglés Básico I en la licenciatura ofrecida por la Universidad Nacional de Colombia, como del diseño y la implementación de una unidad curricular. Dicha unidad curricular se caracterizó por convertirse en una herramienta de conexión entre los contenidos y procedimientos planteados en un programa y las necesidades comunicativas e intereses culturales de los estudiantes. Palabras claves: Currículo, Plataforma Curricular, Unidad Curricular, Constructivismo, Lenguas Extranjeras-Enseñanza Comunicativa, Enfoque basado en Tareas

  15. Pre-sedation and transport of Rhamdia quelen in water containing essential oil of Lippia alba: metabolic and physiological responses.

    Science.gov (United States)

    Becker, Alexssandro G; Parodi, Thaylise V; Zeppenfeld, Carla C; Salbego, Joseânia; Cunha, Mauro A; Heldwein, Clarissa G; Loro, Vania L; Heinzmann, Berta M; Baldisserotto, Bernardo

    2016-02-01

    The effects of transporting silver catfish (Rhamdia quelen) for 6 h in plastic bags containing 0 (control), 30 or 40 µL/L of essential oil (EO) from Lippia alba leaves were investigated. Prior to transport, the fish in the two experimental groups were sedated with 200 µL/L of EO for 3 min. After transport, dissolved oxygen, carbon dioxide, alkalinity, water hardness, pH, temperature and un-ionized ammonia levels in the transport water did not differ significantly among the groups. However, total ammonia nitrogen levels and net Na(+), Cl(-) and K(+) effluxes were significantly lower in the groups transported with EO of L. alba than those in the control group. PvO2, PvCO2 and HCO3(-) were higher after transporting fish in 40 µL/L of EO of L. alba, but there were no significant differences between groups regarding blood pH or hematocrit. Cortisol levels were significantly higher in fish transported in 30 µL/L of EO of L. alba compared to those of the control group. The metabolic parameters (glycogen, lactate, total amino acid, total ammonia and total protein) showed different responses after adding EO to the transport water. In conclusion, while the EO of L. alba is recommended for fish transport in the conditions tested in the present study because it was effective in reducing waterborne total ammonia levels and net ion loss, the higher hepatic oxidative stress in this species with the same EO concentrations reported by a previous study led us to conclude that the 10-20 µL/L concentration range of EO and lack of pre-sedation before transport are more effective.

  16. Antidiabetic Effects of Aqueous Infusions of Artemisia herba-alba and Ajuga iva in Alloxan-Induced Diabetic Rats.

    Science.gov (United States)

    Boudjelal, Amel; Siracusa, Laura; Henchiri, Cherifa; Sarri, Madani; Abderrahim, Benkhaled; Baali, Faiza; Ruberto, Giuseppe

    2015-06-01

    The aqueous infusions of the aerial parts of Artemisia herba-alba Asso and Ajuga iva Schreber, prepared in accordance with the traditional procedure used in the local folk medicine, have been analysed for their composition and content of phytochemical constituents and examined for their antidiabetic effectiveness in alloxan-induced diabetic rats. Oral administration of A. herba-alba and A. iva infusions was studied in normal and alloxan-induced diabetic rats, which were randomly divided into nine groups, each group consisting of six animals. The drug preparations (100, 200, and 300 mg/kg b. w.) of each plant were given orally to the rats of each group twice daily for 15 days. Compositional analysis of the aqueous infusions revealed the presence of several polyphenols as main components. A. herba-alba infusion was characterised by mono- and di-cinnamoylquinic acids, with 5-caffeoylquinic (chlorogenic) acid being the main compound, followed by 3,5-dicaffeoylquinic acid. Vicenin-2 (apigenin 6,8-di-C-glucoside) appeared to be the most abundant among flavonoids. On the other hand, A. iva showed the exclusive presence of flavonoids, with the flavanone naringin present in relatively high levels together with several apigenin (flavone) derivatives. Oral administration of 300 mg/kg b. w. of the aqueous infusions of A. herba-alba and A. iva exhibited a significant reduction in blood glucose content, showing a much more efficient antidiabetic activity compared to glibenclamide, the oral hypoglycaemic agent used as a positive control in this study. These results suggest that A. herba-alba and A. iva possess significant antidiabetic activity, as they were able to improve the biochemical damage in alloxan-induced diabetes in rats.

  17. Pre-sedation and transport of Rhamdia quelen in water containing essential oil of Lippia alba: metabolic and physiological responses.

    Science.gov (United States)

    Becker, Alexssandro G; Parodi, Thaylise V; Zeppenfeld, Carla C; Salbego, Joseânia; Cunha, Mauro A; Heldwein, Clarissa G; Loro, Vania L; Heinzmann, Berta M; Baldisserotto, Bernardo

    2016-02-01

    The effects of transporting silver catfish (Rhamdia quelen) for 6 h in plastic bags containing 0 (control), 30 or 40 µL/L of essential oil (EO) from Lippia alba leaves were investigated. Prior to transport, the fish in the two experimental groups were sedated with 200 µL/L of EO for 3 min. After transport, dissolved oxygen, carbon dioxide, alkalinity, water hardness, pH, temperature and un-ionized ammonia levels in the transport water did not differ significantly among the groups. However, total ammonia nitrogen levels and net Na(+), Cl(-) and K(+) effluxes were significantly lower in the groups transported with EO of L. alba than those in the control group. PvO2, PvCO2 and HCO3(-) were higher after transporting fish in 40 µL/L of EO of L. alba, but there were no significant differences between groups regarding blood pH or hematocrit. Cortisol levels were significantly higher in fish transported in 30 µL/L of EO of L. alba compared to those of the control group. The metabolic parameters (glycogen, lactate, total amino acid, total ammonia and total protein) showed different responses after adding EO to the transport water. In conclusion, while the EO of L. alba is recommended for fish transport in the conditions tested in the present study because it was effective in reducing waterborne total ammonia levels and net ion loss, the higher hepatic oxidative stress in this species with the same EO concentrations reported by a previous study led us to conclude that the 10-20 µL/L concentration range of EO and lack of pre-sedation before transport are more effective. PMID:26297516

  18. El significado institucional pretendido sobre el objeto de estudio probabilidad. Un enfoque curricular

    OpenAIRE

    Bustos, María; Rocha, Pedro

    2008-01-01

    El documento para el área de Matemáticas de la serie Lineamientos Curriculares (MEN, 1998) es una directriz legal, conceptual y metodológica para el diseño, gestión y evaluación de los procesos de formación que adelantan los educadores matemáticos colombianos. En este sentido y particularmente en lo que se refiere al pensamiento aleatorio y su desarrollo, el Proyecto Curricular LEBEM9 brinda un espacio de formación para el estudio de los objetos estocásticos. En esta investigación se presenta...

  19. La reestructuración curricular en la Facultad de Ingeniería

    Directory of Open Access Journals (Sweden)

    Guillermo Sánchez Bolívar

    2011-06-01

    Full Text Available A principios del año 1987 en la Facultad de Ingeniería se inición la ejecución del Plan de reestructuración y capacitación curricular, el cual tenía como objetivos, reestructurar los currículos de los programas de pregrado y capacitar a los profesores en aspectos curriculares y pedagógicos que les permitieron mejorar su desempeño como docentes.

  20. INNOVACION CURRICULAR EN TURISMO: UN CAMPO DE ESTUDIO Y REFERENTES PARA LA FORMACIÓN UNIVERSITARIA

    OpenAIRE

    Lucía M. Collado Medina; Lourdes Medina Cuevas; Alma Herrera Márquez; Maricruz Moreno Zagal

    2013-01-01

    El artículo presenta un panorama de la investigación curricular en turismo reportada en México y otros países, principalmente latinoamericanos. Se definen tendencias, impactos, alcances, pautas de problemáticas emergentes, y referentes para aclarar enfoques y modelos de la formación profesional e innovación curricular de este campo. Con base en el método de mapeo se seleccionaron y valoraron las fuentes que sustentan este estudio, mediante las cuales se plantean los retos para la construcción...

  1. Historical trends of the curricular design of the comprehensive discipline in Biology-geography major

    Directory of Open Access Journals (Sweden)

    Renier Mejías Salazar

    2015-09-01

    Full Text Available The paper describes one of the results of the research project “framework enlargement of adult continuing education in environmental education” at the University of Camagüey. A historical study was conducted to account for the trend in curricular design of the comprehensive discipline in Biology-geography major. The study takes into account emerging indicators resulting from the dialectical relation between education-development and personal development and framework construction. These methods lead to identify the trends afore mentioned as a contribution to the theory of curricular design.

  2. La profesionalización del recurso humano policial. Aspectos curriculares que se deben contemplar

    OpenAIRE

    María Gabriela Arce Navarro

    2008-01-01

    Este artículo desarrolla una propuesta de organización curricular que garantice el alcance de los objetivos, metas y funciones encomendadas a la Escuela Nacional de Policía, entidad a la que le ha sido conferida la potestad para formar y capacitar a las personas encargadas de velar por la seguridad ciudadana de nuestro país. La propuesta considera elementos aún no establecidos por este centro educativo, aportando avances curriculares significativos para la futura implementación del currículo....

  3. Articulando estándares de competencias y lineamientos curriculares de matemáticas

    OpenAIRE

    Amaya, Tulio; López, Albeiro; Rambauth, Geovanny; Soto, Ruby

    2008-01-01

    En el presente trabajo se pretende comunicar los resultados de un proceso de articulación de los lineamientos curriculares, los estándares de competencias básicas de matemáticas, los estándares de competencias ciudadanas y los estándares de competencias laborales, a la planeación curricular del área de matemáticas; se comenzó revisando algunos documentos fundamentales para su entendimiento; se materializaba con reuniones avaladas por la secretaría de educación municipal, quien convocaba y fac...

  4. Fifty Years of Climate Curricular Confusion and Pedagogical Gaps

    Science.gov (United States)

    McCaffrey, M. S.; Buhr, S. S.; Niepold, F.

    2008-12-01

    of science education over the past fifty years, examine various education reform efforts and initiatives aimed at fostering a more science literate society over recent decades, explore a few of the reasons why many students are never exposed to the basics of the climate system, and propose a strategy on how this unfortunate historical curricular and pedagogical gap in climate education can be addressed.

  5. Morteros de albañilería con escombros de demolición

    Directory of Open Access Journals (Sweden)

    Álvarez Cabrera, J. L.

    1997-06-01

    Full Text Available The possibility of recycling construction rubble, its technical and economic effectiveness, and the social and ecological impact they provide for our society is the reason and the starting point for an optimal exploitation of this aggregate in the manufacture of masonry mortar, since it has the same inherent properties as those obtained from the quarry aggregates, described in the Cuban standard NC52-79:93. The work consists in the preparation and study of masonry mortars using recycled aggregates -demolition product-. Four volumetric dosages were prepared (1:4; 1:5; 1:6 y 1:8, which were submitted to physical and mechanical tests at 7, 28 and 60 days, adherence resistance at 28 days, and capillary absorption, obtaining similar results to those.

    La posibilidad real del reciclaje de escombros, su efectividad técnica, económica, y el impacto social y ecológico que proporciona a la sociedad, es nuestro punto de partida para lograr un óptimo aprovechamiento de este árido como futuro agregado fundamental en la obtención de un mortero de albañilería, capaz de tener como propiedades aquellas intrínsecas de los propios morteros obtenidos a partir de áridos de cantera y recogidos en la norma cubana NC52-79:93. El trabajo consiste en la preparación y estudio de morteros de albañilería empleando árido reciclado -producto de demolición- como agregado. Se prepararon 4 dosificaciones volumétricas (1:4; 1:5; 1:6 y 1:8, las cuales fueron sometidas a ensayos físico-mecánicos al, 28 y 60 días, resistencia a la adherencia a 28 días, y absorción capilar, obteniéndose resultados comparables con los morteros de albañilería tradicionales.

  6. Toxicity Of The Essential Oil Of The Cytral Chemotype Of Lippia Alba (Mill. N. E. Brown Toxicidad del aceite esencial de Lippia alba (Mill. N. E. Brown quimiotipo citral

    Directory of Open Access Journals (Sweden)

    Jesús Olivero-Verbel

    2010-06-01

    Full Text Available The essential oil (EO of Lippia alba (Mill. N. E. Brown (Verbenaceae has been traditionally used to treat several diseases. In this study, the acute toxic effects of the citral chemotype of L. alba EO were evaluated in mice. Animals were treated via intraperitoneal receiving the L. alba essential oil at doses between 50 and 2500 mg/kg, and the control group received sesame oil (vehicle. The EO induced dose-dependent neurotoxic effects at doses greater than 1000 mg/kg, including decreased locomotion, motor skills and muscle strength, hypotonia, dyspnea, kyphosis and convulsions. The EO was lethal at a dose of 2500 mg/kg. Animals receiving 1000 mg/kg were euthanized at the end of the treatment period and their blood and livers were collected for analysis. Mice exposed to L. alba EO presented signifcantly greater plasma alanine aminotransferase (ALT activities than the control group. Liver histological changes included mild infammation, in particular, an increase in nuclear size. Compared to vehicle control group, changes in expression for selected genes were signifcant for FABP5, a fatty acid transport related gene. In summary, the intraperitoneal administration of L. alba EO (citral chemotype causes neurological damage in mice at doses equal or greater than 1500 mg/kg, whereas at 1000 mg/kg, it generates mild liver damage. Therefore, the systemic use of this EO raises concerns about its safety.El aceite esencial (AE de Lippia alba (Mill. NE Brown (Verbenaceae ha sido utilizado tradicionalmente para tratar varias enfermedades. En este estudio, los efectos tóxicos agudos del AE de Lippia alba quimiotipo citral fueron evaluados en ratones. Los animales fueron tratados por vía intraperitoneal recibiendo el AE en dosis entre 50 y 2500 mg/kg de peso, y el grupo control aceite de sésamo (vehículo. Dosis superiores a 1000 mg/kg del AE mostraron efectos neurotóxicos incluyendo disminución de la locomoción e hipotonía, disnea, cifosis y

  7. Estudos comparados como método de pesquisa: a escrita de uma história curricular por documentos curriculares

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    FABIANY DE CÁSSIA TAVARES SILVA

    2016-01-01

    Full Text Available El artículo presenta una investigación concluida, inserida en el campo da la historia de la educación, focalizando la reflexión sobre las condiciones teóricas y metodológicas que se utilizan en los procedimientos del estudio comparado. El objetivo de la investigación fue el de escribir una historia curricular particular, mediante el estudio de documentos curriculares. La metodología utilizada se orienta por la explicitación de los fundamentos teóricos, de las áreas de comparación y de los procedimientos investigativos que sustentan la elección del estudio comparado como método de investigación. Al escoger los fundamentos, las áreas y los procedimientos, tratamos de analizar las diferencias y las semejanzas, de explorarlas al máximo para descubrir cómo se expresan, de rastrear los contenidos de las informaciones en el contexto en el que se presentan, decontextualizarlas, es decir, buscamos establecer relaciones con las diferentes situaciones en que una historia curricular fue/es producida.

  8. Concentrações de BAP sobre a proliferação in vitro de brotos de Lippia alba [(Mill.N.E.Brown] BAP concentrations on in vitro proliferation of Lippia alba [(Mill. N.E.Brown] shoots

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    S.A. Asmar

    2012-01-01

    Full Text Available Lippia alba é uma planta de origem brasileira, pertencente à família Verbenaceae. É conhecida por combater a insônia e a asma, além de possuir ação anticonvulsivante e antifúngica. A micropropagação tem sido utilizada para multiplicação de várias espécies com propriedades medicinais, e o BAP é a citocinina sintética mais utilizada para a multiplicação in vitro. O objetivo deste trabalho foi estabelecer a concentração adequada de BAP na multiplicação in vitro de L. alba. Explantes constituídos de segmentos nodais provenientes de plântulas já estabelecidas in vitro com aproximadamente 0,5 cm foram inoculados em meio MS, suplementado com 0,0; 0,5; 1,0 e 1,5 mg L-1 de BAP em adição de 30 g L-1 de sacarose. A utilização de 1,5 mg L-1 de BAP promove a multiplicação in vitro de L. alba. A ausência deste regulador propicia maior número de folhas e o uso na concentração de 0,5 mg L-1 aumentou as massas fresca e seca de parte aérea nesta espécie.Lippia alba is a Brazilian plant, belonging to the Verbenaceae family. It is known to combat insomnia and asthma, also has antifungal and anticonvulsant actions. Micropropagation has been used for propagation of various species with medicinal properties, and BAP is the most widely used synthetic cytokinin for in vitro multiplication. The aim of this study was to determine the appropriate concentration of BAP on in vitro multiplication of L. alba. Explants consisting of nodal segments from seedlings already established in vitro with approximately 0.5 cm were inoculated on MS medium supplemented with 0; 0.5; 1.0 and 1.5 mg L-1 of BAP and 30 g L-1 of sucrose. The use of 1.5 mg L-1 of BAP promotes the in vitro multiplication of L. alba. The absence of this regulator provides a greater number of leaves and its use at the concentration of 0.5 mg L-1 increased shoots' fresh and dry weights in this specie.

  9. Antidiabetic and antioxidant effects and phytochemicals of mulberry fruit (Morus alba L.) polyphenol enhanced extract.

    Science.gov (United States)

    Wang, Yihai; Xiang, Limin; Wang, Chunhua; Tang, Chao; He, Xiangjiu

    2013-01-01

    The antidiabetic and antioxidant activities of the ethyl acetate-soluble extract (MFE) of mulberry fruit (Morus alba L.) were investigated. In vitro, MFE showed potent α-glucosidase inhibitory activity and radical-scavenging activities against DPPH and superoxide anion radicals. In vivo, MFE could significantly decrease fasting blood glucose (FBG) and glycosylated serum protein (GSP), and increase antioxidant enzymatic activities (SOD, CAT, GSH-Px) in streptozotocin (STZ)-induced diabetic mice. Bioactivity-guided fractionation of the MFE led to the isolation of 25 phenolic compounds, and their structures were identified on the basis of MS and NMR data. All the 25 compounds were isolated from mulberry fruit for the first time. Also, the α-glucosidase inhibitory activity and antioxidant activity of the phenolics were evaluated. Potent α-glucosidase inhibitory and radical-scavenging activities of these phenolics suggested that they may be partially responsible for the antidiabetic and antioxidant activities of mulberry fruit.

  10. Antidiabetic and antioxidant effects and phytochemicals of mulberry fruit (Morus alba L. polyphenol enhanced extract.

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    Yihai Wang

    Full Text Available The antidiabetic and antioxidant activities of the ethyl acetate-soluble extract (MFE of mulberry fruit (Morus alba L. were investigated. In vitro, MFE showed potent α-glucosidase inhibitory activity and radical-scavenging activities against DPPH and superoxide anion radicals. In vivo, MFE could significantly decrease fasting blood glucose (FBG and glycosylated serum protein (GSP, and increase antioxidant enzymatic activities (SOD, CAT, GSH-Px in streptozotocin (STZ-induced diabetic mice. Bioactivity-guided fractionation of the MFE led to the isolation of 25 phenolic compounds, and their structures were identified on the basis of MS and NMR data. All the 25 compounds were isolated from mulberry fruit for the first time. Also, the α-glucosidase inhibitory activity and antioxidant activity of the phenolics were evaluated. Potent α-glucosidase inhibitory and radical-scavenging activities of these phenolics suggested that they may be partially responsible for the antidiabetic and antioxidant activities of mulberry fruit.

  11. Potential pancreatic lipase inhibitory activity of phenolic constituents from the root bark of Morus alba L.

    Science.gov (United States)

    Ha, Manh Tuan; Tran, Manh Hung; Ah, Kim Jeong; Jo, Kyung-Jin; Kim, Jaewang; Kim, Wook Dong; Cheon, Woo Jae; Woo, Mi Hee; Ryu, Sung Ho; Min, Byung Sun

    2016-06-15

    Detailed phytochemical investigation from the root bark of Morus alba resulted in the isolation of eleven new compounds, including seven 2-arylbenzofuran derivatives (morusalfurans A-G), three flavonoids (morusalnols A-C), and one geranylated stilbene (morusibene A), as well as 22 known compounds. The structures of the identified compounds were elucidated based on a comprehensive analysis of spectroscopic data and Mosher's method. Compounds 2, 3, 6-8, 11, 23, 24, and 29 showed potent inhibition of PL in comparison with the positive control treatment (orlistat, IC50=0.012μM), with IC50 values ranging from 0.09 to 0.92μM. PMID:27156775

  12. Involvement of histaminergic system in the anxiolytic-like activities of Morus alba leaves in mice.

    Science.gov (United States)

    Lee, Seungheon; Kim, Dong Hyun; Lee, Ji Hye; Ko, Eun Seong; Oh, Won Bo; Seo, Yong Taek; Jang, Young Pyo; Ryu, Jong Hoon; Jung, Ji Wook

    2013-01-01

    The aim of this study was to identify the effects of 85% methanolic extract of Morus alba leaves (EMA), which is a traditional herb, in mice. The effects of EMA on the anxiolytic-like behaviour were studied using the elevated plus maze (EPM) and hole-board test. To elucidate the mode of action of the anxiolytic-like effects of EMA, the mice were subjected to the co-administration of EMA (200 mg/kg, per os (p.o.)) and either antagonist. EMA (at 200 or 400 mg/kg) significantly increased the percentages of time-spent in the open arms and entries into the open arms of the EPM versus vehicle-treated control group (phistaminergic system in central nerve system.

  13. Effects of the Methanol Extract of Basella alba L (Basellaceae on Steroid Production in Leydig Cells

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    Carine Travert

    2011-01-01

    Full Text Available In this study, Leydig cells were purified from 70 day-old Sprague Dawley male rats and incubated with 10 and 100 µg/mL of methanol extract of Basella alba (MEBa for 4 hours followed by the evaluation of cell viability, steroid (testosterone and estradiol production, and the level of aromatase mRNA. Results showed that MEBa did not affect Leydig cell viability. At the concentration of 10 µg/mL, MEBa significantly stimulated testosterone and estradiol production (p < 0.01 and p < 0.03, respectively, and enhanced aromatase mRNA level (p < 0.04. These observations suggest that MEBa directly stimulated testosterone, estradiol and aromatase mRNA levels in isolated Leydig cells.

  14. Effects of the methanol extract of Basella alba L (Basellaceae) on steroid production in Leydig cells.

    Science.gov (United States)

    Nantia, Edouard Akono; Travert, Carine; Manfo, Faustin-Pascal T; Carreau, Serge; Monsees, Thomas K; Moundipa, Paul Fewou

    2011-01-01

    In this study, Leydig cells were purified from 70 day-old Sprague Dawley male rats and incubated with 10 and 100 μg/mL of methanol extract of Basella alba (MEBa) for 4 hours followed by the evaluation of cell viability, steroid (testosterone and estradiol) production, and the level of aromatase mRNA. Results showed that MEBa did not affect Leydig cell viability. At the concentration of 10 μg/mL, MEBa significantly stimulated testosterone and estradiol production (p < 0.01 and p < 0.03, respectively), and enhanced aromatase mRNA level (p < 0.04). These observations suggest that MEBa directly stimulated testosterone, estradiol and aromatase mRNA levels in isolated Leydig cells. PMID:21339992

  15. Prey selection by the Barn Owl Tyto alba (Scopoli, 1769 in captivity

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    V. Vanitha

    2009-07-01

    Full Text Available We investigated prey selection of the Barn Owl Tyto alba under captive conditions where birds were allowed to choose among individuals of varying size from four field rodent species: Bandicota bengalensis, Millardia meltada, Tatera indica and Mus booduga. Owls showed little species preference and a tendency to favour the medium weight class in all prey species except M. booduga. Preference for body parts consumed varied according to prey size, ranging from the head alone in the large weight class to the entire body in the small weight class. Biochemical measurements showed that protein, carbohydrate and lipid levels were higher respectively in the brain, liver and muscles of all three species and weight classes studied. The preference for medium weight prey despite a lower nutrient content compared to large weight prey is attributed to a greater ease of capture.

  16. ASPECTS CONCERNING TAX EVASION IN ALBA COUNTY AND BRAŞOV REGION

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    Claudia Florina Radu

    2014-09-01

    Full Text Available One of the effects of evasion is the reduction in tax revenues, so the state will have less money to supply public goods and services. Instead, if there are sustained efforts to reduce tax evasion, revenues to the budget will increase, will exist resources to counter the economic crisis and for providing public services to citizens: education, health, social security etc. Additional money obtained from reducing tax evasion would solve many of the problems related to the lack of resources facing states today. That is why it is so important to combat and reduce tax evasion, both nationally and globally. Starting from the analysis of some data about tax audit and budget revenues of Alba County, we highlighted the main factors that determine people to pay taxes: firstly, the positive incentives, then the fear of negative consequences of non-payment, and, to a small extent, the moral factors.

  17. Inhibition of Sanggenon G Isolated from Morus alba on the Metastasis of Cancer Cell

    Institute of Scientific and Technical Information of China (English)

    CUI Long; LEE Hyun-sun; OH Won-keun; AHN Jong-seog

    2011-01-01

    Objective An organic layer prepared from the cortex of Morus alba (Moraceae) was studied in order to identify the active compounds for heparinase. Methods Bioassay-guided fractionation resulted in the isolation of sanggenon G Results The compound showed inhibitory activity with IC50 of 3.7 μmol/L on heparinase in vitro as well as 24 μmol/L in invasion assay using MDA-MB231 cells. Sanggenon G also had the moderate cytotoxicity at SW 620 (colon) and ACHN (kidney) cancer cell lines with IC50 of 10.96 and 13.44 μmol/L, respectively. Conclusion This is the first time that prenylated flavonoid sanggenon G is described as heparinase inhibitor. Besides, this flavonoid would be expected to be a metastasis inhibitor of cancer cells and also a valuable reagent to explore the mechanism of heparinase/heparanase-mediated metastasis.

  18. Neutralization of local and systemic toxicity of Daboia russelii venom by Morus alba plant leaf extract.

    Science.gov (United States)

    Chandrashekara, K T; Nagaraju, S; Nandini, S Usha; Kemparaju, K

    2009-08-01

    Antivenom therapy is the current best therapy available for the treatment of fatal snake envenomation. However, the antivenom offers less or no protection against local effects such as extensive edema, hemorrhage, dermo-, myonecrosis and inflammation at the envenomed region. Viperidae snakes are highly known for their violent local effects and such effects have been commonly treated with plant extracts without any scientific validation in rural India. In this investigation Morus alba plant leaf extract has been studied against the Indian Vipera/Daboia russelii venom induced local and systemic effects. The extract completely abolished the in vitro proteolytic and hyaluronolytic activities of the venom. Edema, hemorrhage and myonecrotic activities were also neutralized efficiently. In addition, the extract partially inhibited the pro-coagulant activity and completely abolished the degradation of Aalpha chain of human fibrinogen. Thus, the extract processes potent antisnake venom property, especially against the local and systemic effects of Daboia russelii venom.

  19. Screening of Antimicrobial activity of Aqueous extracts of Leaves, Flower and Stem of Eclipta alba

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    Prabhsimran Singh Sandhu

    2012-12-01

    Full Text Available Plants are the oldest source of pharmacologically active compounds, and have provided humankind with many medically useful compounds for centuries. In this study aqueous extract of leaves, stem and flower of Eclipta alba were tested for antimicrobial activity against Escherichia coli (ATCC25923,Enterobacter cloacae (ATCC10699, Enterococcus faecalis (ATCC10741, Proteus vulgaris (ATCC12454 Staphylococcus aureus (ATCC25923 Klebsiella pneumonia (ATCC15380 and Staphylococcus. Saprophyticus (ATCC35552 It was shown that leaves extract effective against E. cloacae & K .pneumoniae but not against others, while aquous extract of stem shown good antitimicrobial effect against E. cloacae, E. faecali, K. pneumoniae and S. saprophyticus but E. coli, P. vulgaris, S. aureus were found resistant and The aqueous extract of flower shown reliabe ZOI against P.vulgaris ,S.aureus and S.saprophyticus while resistant against all other microbes.

  20. Trends in North American small mammals found in common barn-owl (Tyto alba) dietary studies

    Science.gov (United States)

    Clark, D.R.; Bunck, C.M.

    1991-01-01

    Data on mammals were compiled from published studies of common barn-owl (Tyto alba) pellets. Mammalian composition of pellet samples was analyzed within geographic regions in regard to year, mean annual precipitation, latitude, and number of individual mammals in the sample. Percentages of individuals in pellets that were shrews increased whereas the percentages of rodents decreased with greater mean annual precipitation, especially in northern and western areas of North America. From the 1920s through 1980s, in northern and eastern areas the percentage of species that was shrews decreased, and in northern and central areas the percentage of individuals that was murid rats and mice increased. Human alterations of habitats during these seven decades are postulated to have caused changes in available small mammals, leading to changes in the barn-owl diet.

  1. ANALISIS SENYAWA KIMIA DALAM EKSTRAK KLOROFOM BUNGA KAMBOJA (Plumeria alba DENGAN GC-MS

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    Santi Nur Handayani

    2008-11-01

    Full Text Available Plumeria alba is called frangipani is one of Apocynaceae family’s plant. Frangipani is potentially used as traditional medicine, for example as an antiinflamation drugs. It has not been yet done an extensive reasearch on the chemical compound content of frangipani. The reasearch was conducted to investigate some chemical constituents by using Gas Chromatography-Mass Spectrometer (GC-MS. Extraction of chemical compound of frangipani has been conducted by soxhletasi using n-hexane as solvent followed by chloroform and ethyl acetate. Then chloroform extract was identified by GC-MS. The result showed that extract of chloroform contained : palmitic acid, clionasterol, fucosterol, fagarasterol and methyl commate B respectively.

  2. A soft X-ray beamline for transmission X-ray microscopy at ALBA.

    Science.gov (United States)

    Pereiro, E; Nicolás, J; Ferrer, S; Howells, M R

    2009-07-01

    The MISTRAL beamline is one of the seven phase-I beamlines at the ALBA synchrotron light source (Barcelona, Spain) that will be opened to users at the end of 2010. MISTRAL will be devoted to cryotomography in the water window and multi-keV spectral regions for biological applications. The optics design consists of a plane-grating monochromator that has been implemented using variable-line-spacing gratings to fulfil the requirements of X-ray microscopy using a reflective condenser. For instance, a fixed-focus condition independent of the included angle, constant magnification as well as coma and spherical aberration corrections are achieved with this system. The reported design is of wider use. PMID:19535865

  3. The use of the white poplar (Populus alba L.) biomass as fuel

    Institute of Scientific and Technical Information of China (English)

    Tatiana Griu; Aurel Lunguleasa

    2016-01-01

    We determined the calorific value of white poplar (Populus alba L.) woody biomass to use it as fire-wood. The value of 19.133 MJ kg-1 obtained experimen-tally shows that the white poplar can be quite successfully used as firewood. Being of a lower quality in comparison with usual beech firewood, the white poplar has similar calorific value. The white poplar has a calorific density of 30.7%lower than that of current firewood. That is why the price of this firewood from white poplar is lower accord-ingly. Also, the prognosis of calorific value on the basis of the main chemical elements, being very close to the experimental value (?2.6%), indicates an appropriate value can be achieved to be used for investigation with the chemical element analysis.

  4. Variability of physiological and growth characteristics of white willow (Salix alba L. clones

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    Orlović Saša

    2006-01-01

    Full Text Available The samples from field experiment on five clones of white willow (Salix alba L. in the adult phase, was investigated as follows: net photosynthesis and dark respiration, content of photosynthetic pigments (chlorophylls a, b and carotenoids, number and size of stornata and elements of growth (tree diameters and heights. The aim of the research is to determine if there are any relations between these physiological characters and the elements of growth, i.e. if any of them can be utilized in the early selection for growth vigor. The results show that all the characters are characterized by low coefficients of variation, statistically highly significant differences and high coefficients of heritability in a broad sense. As for the net of photosynthesis, the number of stornata on the adaxial and abaxial sides of the leaf are in high correlation with the elements of growth, which indicates that they can be used in the early selection for growth vigor.

  5. Pedestrian Zones As Important Urban Strategies in Redeveloping the Community - Case Study: Alba Iulia Borough Park

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    Oana Elena BLAGA

    2013-02-01

    Full Text Available The pedestrian zone issue is by far an important matter in the context of urban regeneration. Cities which adopted this strategy – the pedestrian zones – have recorded better urban attitudes regarding the urban environment, a continuous growth of the urban quality, an improved urban ecosystem  and continuous attractiveness for investment and  tourism. This article explores the evolution of the pedestrian zones as ideas in utopian urban models in the early 1900 and later as efficient environmental friendly strategies adopted by cities. After identifying the path this concept followed, from a simple idea to an important strategy of urban development, the paper focuses on the major characteristics and benefits of the pedestrian precincts. Next, the article focuses on the newest pedestrian zone in one of the Romanian cities, Alba Iulia and it tries to identify the types of impact this area has so far on the community and entire city.

  6. THERMO-VACUUM MODIFICATION OF SPRUCE (PICEA ABIES KARST. AND FIR (ABIES ALBA MILL. WOOD

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    Ottaviano Allegretti,

    2012-06-01

    Full Text Available The study presents results of the characterization of Norway spruce (Picea abies Karst. and fir (Abies alba Mill. wood thermally modified by TERMOVUOTO® technology at temperatures in the range of 160 to 220°C in vacuum conditions. Sixteen thermo-vacuum treatment tests were carried out using a pilot laboratory unit on 30-mm-thick spruce and fir boards in various combinations of the process parameters, i.e. temperature (T, duration (t, and pressure (p. The treated material was characterized to reveal the changes of the physical-mechanical properties including color and durability. The treated wood showed an improved performance with relation to the dimensional stability and durability. The measured mechanical properties did not show any significant decrease. Analytical models, based on the existing correlations between wood properties and process parameters, were assessed, thus allowing the control of the process.

  7. Optimization of Extraction Conditions and Development of a Sensitive HPTLC Method for Estimation of Wedelolactone in different extracts of Eclipta alba

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    Kulkarni Savita

    2011-01-01

    Full Text Available Eclipta alba has been used in Ayurvedic medicine for treatment of various ailments. An attempt has been made to optimize different extraction conditions for Eclipta alba. Further an accurate, precise, reproducible and sensitive accurate, precise and reproducible (HPTLC method has been developed for the estimation of Wedelolactone in Eclipta alba. An attempt has been made to quantify wedelolactone in various extracts by HPTLC method. Precoated aluminum silica gel F plates were used as stationary phase and toluene: ethyl acetate (9:1 was used as mobile phase. This system was found to give compact spots for wedelolactone (RF value of 0.30 ± 0. 3 with a linearity range of 1 to 80 µg per spot. The proposed method was applied to evaluate efficiency of different methods of extraction i.e. percolation, maceration, hot solvent extraction (Soxhlet apparatus, supercritical fluid extraction, microwave, orbital shaker bath and sonication method for extraction of wedelolactone from Eclipta alba.

  8. Effects of aqueous extracts of Hibiscus macranthus and Basella alba in mature rat testis function.

    Science.gov (United States)

    Moundipa, F P; Kamtchouing, P; Koueta, N; Tantchou, J; Foyang, N P; Mbiapo, F T

    1999-05-01

    Mature male albino Wistar rats (180-220 g) were given by gastric intubation Hibiscus macranthus Hochst A ex Rich (Malvaceae) and Basella alba L. (Basellaceae) aqueous extract from both fresh and dry leaves, at a dose equivalent to 0.720 or 0.108 g of plant, respectively per kg body weight. This was to evaluate their effects on male reproductive function. Control groups were treated equally, but given water instead of the extract. After the treatment periods, animals were killed, their blood collected, the testes and some annex glands removed for histological and biochemical analysis. Results showed that the extract from fresh leaves significantly increased the body weight of rats by 17% from day 7 as compared to controls, whereas the increase was less pronounced (4%) when the rats were given dry leaf extract. The weight of seminal vesicles of rats given the extracts also increased after 15 days. The histological analysis of testis showed abundant spermatozoa in the lumen of the seminiferous tubulus from day 7 in rats fed with the extract when compared to the controls. The serum level of testosterone was significantly increased on the 15th day by 80% in rats given both types of extracts compared to the controls. Testis of treated rats showed high testosterone production in vitro (136 and 62%, respectively for treated and control after 15 days, compared to those of 3 days). Activity of prostatic acid phosphatase was high in prostate, testis and serum of treated rats in all experimental period. From these findings and observation, it was concluded that the aqueous extract of H. macranthus and B. alba had anabolizing and virilizing effects. PMID:10465653

  9. Lippia alba morphotypes cidreira and melissa exhibit significant differences in leaf characteristics and essential oil profile

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    Caroline N. Jezler

    2013-04-01

    Full Text Available Lippia alba (Mill. N.E. Br. ex Britton & P. Wilson, Verbenaceae, is widely used in traditional Brazilian medicine for the treatment of abdominal distress. The species exhibits considerable chemical and morphological diversity, and various chemotypes have been characterized. A comparative study of L. alba, has been carried out of the morphoanatomical characteristics of the leaves and the profiles of the essential oils of the morphotypes cidreira and melissa grown in the Medicinal Plant Garden of the Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brazil. The mean plant height of cidreira was 1.80 m and the stems and branches were fairly erect, while melissa plants were smaller (1.60 m and presented prostrate stems and branches. Although the leaf of the morphotypes look were similar, the mean values of length, width and area of the leaves of cidreira (respectively, 7.42 cm, 3.32 cm and 17.31 cm² differed significantly from those of melissa (4.68 cm, 2.35 cm and 7.32 cm2. The morphotypes presented amphistomatic leaves with uniseriate epidermis on both surfaces. The mesophyll was dorsiventral, but in cidreira the palisade parenchyma was biseriate while in melissa it was uniseriate. Simple tector and capitate glandular trichomes were present on the adaxial and abaxial surfaces of the leaf blades of both morphotypes. Six distinct types of glandular trichomes could be distinguished: types I and II were present in both morphotypes, while type III was detected only in cidreira, and types IV to VI were present only in melissa. The two morphotypes also differed with respect to the composition of the essential oil, cidreira produced oil composed mainly of citral, while the oil from melissa was rich in citral, limonene and carvone.

  10. Radical Scavenging Activity of the Essential Oil of Silver Fir (Abies alba).

    Science.gov (United States)

    Yang, Seun-Ah; Jeon, Sang-Kyung; Lee, Eun-Jung; Im, Nam-Kyung; Jhee, Kwang-Hwan; Lee, Sam-Pin; Lee, In-Seon

    2009-05-01

    The essential oil of silver fir (Abies alba) is known to help respiratory system and have easing and soothing effect for muscle. In the present study, we investigated the chemical composition, cytotoxicity and its biological activities of silver fir (Abies alba) essential oil. The composition of the oil was analyzed by GC-MS and bornyl acetate (30.31%), camphene (19.81%), 3-carene (13.85%), tricyclene (12.90%), dl-limonene (7.50%), alpha-pinene (2.87%), caryophyllene (2.18%), beta-phellandrene (2.13%), borneol (1.74%), bicyclo[2.2.1]hept-2-ene,2,3-dimethyl (1.64%) and alpha-terpinene (1.24%) were the major components in the oil. The results tested by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay indicated that the oil showed no cytotoxic effect, at concentrations of 1 and 5%, for as long as 24 and 3 h, respectively. The antiradical capacity was evaluated by measuring the scavenging activity of the essential oil on the 2,20-diphenylpicrylhydrazyl (DPPH) and 2,2'-azino-bis 3-ethyl benzothiazoline-6-sulfonic acid (ABTS) radicals. The oil was able to reduce the both radicals dose-dependently, and the concentration required for 50% reduction (RC(50)) against DPPH radicals (2.7 +/- 0.63%) was lower than ABTS radicals (8.5 +/- 0.27%). The antibacterial activity of the oil was also evaluated using disc diffusion method against Staphylococcus aureus, Streptococcus mutans, Listeria monocytogenes, Acinetobacter baumannii, Escherichia coli, and Vibrio parahaemolyticcus. The oil exhibited no antibacterial activity against all the bacterial strains tested except S. aureus of mild activity. PMID:19430614

  11. Effect of light regime on the natural regeneration of silver fir (Abies alba, Calabria, Southern Italy

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    Mercurio R

    2008-06-01

    Full Text Available Aim of this study is to analyse the effect of light environment on dynamics of natural regeneration of silver fir. The study areas were located in natural silver fir (Abies alba Mill. stands of Serra San Bruno Forests (Archiforo in the Calabrian Apennine. Measurements of the Photosynthetically Active Radiation (PAR - radiation in the 0.4-0.7 µm waveband were collected with a ceptometer (AccuPAR Decagon Devices, USA. PAR was measured monthly during the growing season. Measurements were taken: under canopy, inside natural gaps and in correspondence of escarps along forestry roads. After each measurement for each sampling point the PAR transmittance was calculated. Seedlings density was estimated in each position. Each of these seedlings was identified by species, total height was measured and the age was visually determined. Seedlings were distributed in three classes: (a class 0: to natural regeneration absence and height 10 seedlings m-2 and height between 0.30 and 1 m; (c class 2: to density > 10 seedlings m-2 and height > 1 m. Level of PAR transmittance was higher inside the gaps where a good seedlings density was observed. Further seedling density was higher in correspondence of escarps. Under canopy, seedlings were absent due to low levels of light (1.3 < T < 3.7. The results showed a diverse ecological behaviour to light environment of silver fir of Serra San Bruno compared with central-northern Abies alba population. Some comments about silvicultural treatment of silver fir stand in the Calabrian Apennine are provided, according to dynamics of natural regeneration.

  12. What Factors Cultivate Innovation within the MBA: Studying Three Examples of Curricular Innovation

    Science.gov (United States)

    Schramm, John David, II

    2012-01-01

    This research explores the phenomenon of peerless curricular innovation, defined as an innovative course that exists at a top-50 business school, but has not been directly replicated by peer schools. These outliers achieve a demonstrated impact on their intended audience, and result from multiple collaborators--not simply a single course created…

  13. Negotiating Curricular Transitions: Foreign Language Teachers' Learning Experience with Content-Based Instruction

    Science.gov (United States)

    Cammarata, Laurent

    2009-01-01

    Content-based instruction (CBI) has been touted as an effective curricular approach in a wide range of educational contexts, including immersion and English as a second language. Yet this approach to curriculum design is rarely implemented in conventional K-16 foreign language (FL) programs in the United States today. The phenomenological study…

  14. Held Back: The Impact of Curricular and Pedagogical Factors on Tested Achievement in High School Mathematics

    Science.gov (United States)

    Agvanian, Zara

    2013-01-01

    This study examined the impact of curricular factors and teaching practices on students' tested achievement in mathematics, explored the best predictors of the tested achievement, and examined differences in the tested achievement among student subgroups. The study utilized qualitative and quantitative methods and triangulated findings from…

  15. Curricular Implications of Virtual World Technology: A Review of Business Applications

    Science.gov (United States)

    Cyphert, Dale; Wurtz, M. Susan; Duclos, Leslie K.

    2013-01-01

    As business organizations grow increasingly virtual, traditional principles of organizational communication require examination and modification. This article considers the curricular implications of the growing business uses of virtual world technology through three different lenses--students as employee-users, students as strategic designers and…

  16. The Influence of SLA Training in Curricular Design among Teachers in Preparation

    Science.gov (United States)

    Kessler, Greg; Bikowski, Dawn

    2011-01-01

    This study reports on how language teachers in preparation integrate key concepts from second language acquisition (SLA) theory into CALL curricular design. The need for language teachers who have had SLA coursework to receive orientation to student-centered learning in a CALL context has been identified previously (Kessler, 2010). This research…

  17. Cross-Curricular Teaching and Learning in the Secondary School Mathematics

    CERN Document Server

    Ward-Penny, Robert

    2010-01-01

    Cross-curricular approaches have much to offer the modern mathematics classroom. They can help teachers to present mathematics as a growing, relevant discipline that is central to much of modern life, and help learners to make sense of what they are doing and why.

  18. Discursos curriculares na disciplina escolar Química Curriculum discourses in school Chemistry

    Directory of Open Access Journals (Sweden)

    Alice Casimiro Lopes

    2005-08-01

    Full Text Available Neste artigo, é defendido que a disciplina escolar é um híbrido de discursos curriculares. Para argumentar em favor dessa idéia, é analisado como textos na área de ensino de Química influenciam nas políticas de currículo, hibridizando discursos oficiais e outros discursos curriculares. São articuladas as discussões teóricas de Ball, sobre políticas de currículo, de Goodson, sobre disciplinas escolares, de Bernstein, sobre recontextualização, e de Canclini, sobre hibridismo.This paper defends the hybridism of curricular discourses in school subjects. To argue in favor of this idea, chemistry education's texts are analyzed to show the influence of curriculum policy in hybridizing the official discourses and other curricular discourses. The text draws on the analysis of Ball about curriculum policy, on Goodson's school subjects, on Bernsteins's recontextualization and Canclini's hybridism.

  19. Exploring the Association between Campus Co-Curricular Involvement and Academic Achievement

    Science.gov (United States)

    Bergen-Cico, Dessa; Viscomi, Joe

    2013-01-01

    This research examines the relationship between college student attendance at co-curricular programs and GPA. Researchers tracked attendance of two cohorts totaling 3,000+ students through electromagnetic scanning at university-sponsored events. Analysis of GPA by attendance rate clusters revealed that students attending 5-14 events over the…

  20. La educabilidad: atributo mediacional entre la realidad curricular y organizativa del centro escolar

    Directory of Open Access Journals (Sweden)

    Miguel PÉREZ FERRA

    2009-11-01

    Full Text Available Es evidente, que la actividad de los centros educativos necesita para alcanzar las finalidades que justifican su existencia y trabajo, ser planificada, ordenada, programada, desarrollada y evaluada. Toda esta labor se sintetiza y recoge en el Proyecto de Centro, instrumento de planificación a medio plazo, que concreta y desarrolla los elementos que lo integran: Finalidades educativas, Proyecto curricular de Centro y Reglamento de Organización y Funcionamiento. En este artículo realizamos una reflexión sobre la conveniencia, posibilidad y realidad de utilización con carácter orgánico de dos documentos esenciales en el Proyecto de Centro. Nos referimos al Proyecto Curricular de Centro y al Reglamento de Organización y Funcionamiento. El estudio integra tres perspectivas complementarias: la realidad ontológica o conveniencia de dicha relación que intentamos justificar desde el atributo educabilidad, propio del hombre, nexo de unión entre la esencia de los dos documentos; la realidad histórica de los últimos cincuenta años y su incidencia en la relación organizativo-curricular de los centros; por último, valoramos la trayectoria lineal de la formación del profesorado en España y sus respuestas al centro como unidad organizativa, profesional y curricular.

  1. The Play Curricular Activity Reflection Discussion Model for Game-Based Learning

    Science.gov (United States)

    Foster, Aroutis; Shah, Mamta

    2015-01-01

    This article elucidates the process of game-based learning in classrooms through the use of the Play Curricular activity Reflection Discussion (PCaRD) model. A mixed-methods study was conducted at a high school to implement three games with the PCaRD model in a year-long elective course. Data sources included interviews and observations for…

  2. Models for Curricular Materials Development: Combining Applied Development Processes with Theory

    Science.gov (United States)

    Appleton, James; Lawrenz, Frances; Craft, Elaine; Cudmore, Wynn; Hall, Jim; Waintraub, Jack

    2007-01-01

    Developing curricular materials for technical and vocational education is particularly challenging because of the comprehensive requirements for technical education and the rapidity with which technical positions are evolving. Well-educated employees are expected to have general communication, reasoning, problem-solving, and behavioral skills in…

  3. Sports Business Unit Meets Cross-Curricular Learning Goals: Grades 9-12

    Science.gov (United States)

    Curriculum Review, 2006

    2006-01-01

    A new online learning tool called the eCommSports Kit links a seven-step sports marketing curriculum with a school team to give students real-life experience in developing and executing a plan to boost game attendance. The kit, available through http://www.ecommsports.com, takes teens on a cross-curricular journey through conducting business…

  4. Our Environment. Language Arts Theme Units, Volume I. Cross Curricular Activities for Primary Grades.

    Science.gov (United States)

    McAllister, Elizabeth A.; Hildebrand, Joan M.; Ericson, Joann H.

    Suggesting that students in the primary grades can explore the world around them and practice valuable skills in spelling, reading, writing, communication, and language, this book presents cross-curricular units on the environment that reach diverse needs by working through emotional memory, deductive reasoning, and multiple intelligences.…

  5. People Around Us. Language Arts Theme Units, Volume V. Cross Curricular Activities for Primary Grades.

    Science.gov (United States)

    McAllister, Elizabeth A.; Hildebrand, Joan M.; Ericson, Joann H.

    Suggesting that students in the primary grades can explore the world around them and practice valuable skills in spelling, reading, writing, communication, and language, this book presents cross-curricular units on "people around us" that reach diverse needs by working through emotional memory, deductive reasoning, and multiple intelligences.…

  6. Intriguing Animals. Language Arts Theme Units, Volume IV. Cross Curricular Activities for Primary Grades.

    Science.gov (United States)

    McAllister, Elizabeth A.; Hildebrand, Joan M.; Ericson, Joann H.

    Suggesting that students in the primary grades can explore the world around them and practice valuable skills in spelling, reading, writing, communication, and language, this book presents cross-curricular units on intriguing animals that reach diverse needs by working through emotional memory, deductive reasoning, and multiple intelligences.…

  7. Do Curricular and Cocurricular Diversity Activities Influence Racial Bias? A Meta-Analysis

    Science.gov (United States)

    Denson, Nida

    2009-01-01

    In response to rapidly changing demographics and increased racial tensions, institutions across the country have implemented diversity-related initiatives--to varying degrees--designed to promote positive intergroup relations. This increased interest has resulted in a growing body of research examining the impact of curricular and cocurricular…

  8. Initiating Curricular Change in the Professions: A Case Study in Nursing.

    Science.gov (United States)

    Williams, Bev

    This paper describes the initiation of curricular change in the undergraduate nursing program at the University of Alberta in Edmonton, in light of significant changes in the health care delivery system. In 1995, the program's Administrative Council adopted a Facilitated Deliberative Inquiry consensus model to manage a review of the curriculum and…

  9. Humanism's Sisyphean Task: Curricular Reform at Brown University during the Second World War

    Science.gov (United States)

    Porwancher, Andrew

    2011-01-01

    In the midst of a curricular debate at Brown University during the Second World War, the faculty's humanists seized the opportunity to pen their views on the nature and purpose of higher education. This investigation reveals humanism as a fragmented force, at once principal and peripheral to the American academy. The central argument of this study…

  10. The University of New Brunswick's Renaissance College: Curricular Evolution and Assessment at the Faculty Level

    Science.gov (United States)

    Zundel, Pierre; Mengel, Thomas

    2007-01-01

    The purpose of this chapter is to draw some general lessons on curricular evolution processes and practices at the faculty level emerging from the creation of Renaissance College at the University of New Brunswick and the implementation of its BPhil program. The authors proceed by induction, working from the specific case of Renaissance College to…

  11. The Ontological Architectures in the Application of a Knowledge Management System for Curricular Assessment

    Science.gov (United States)

    Olson, Brandon D.

    2012-01-01

    Institutions of higher education are facing increasing pressure to improve the effectiveness and quality of academic programs (Association of Governing Boards, Top public policy issues 2011-2012, 2011). These institutions apply curricular assessment processes as a means to evaluate and improve academic effectiveness and quality. Knowledge…

  12. A Cross-Curricular, Problem-Based Project to Promote Understanding of Poverty in Urban Communities

    Science.gov (United States)

    Gardner, Daniel S.; Tuchman, Ellen; Hawkins, Robert

    2010-01-01

    This article describes the use of problem-based learning to teach students about the scope and consequences of urban poverty through an innovative cross-curricular project. We illustrate the process, goals, and tasks of the Community Assessment Project, which incorporates community-level assessment, collection and analysis of public data, and…

  13. Typology of Extra-Curricular Activities and Academic Procrastination among Primary Education Students

    Science.gov (United States)

    Clariana, M.; Cladellas, R.; Gotzens, C.; Badia, M.; Dezcallar, T.

    2014-01-01

    Introduction: Some previous studies have shown that participation in extra-curricular activities optimises both academic grades and the socialisation process of students. However, nobody has so far related extracurricular activities with a tendency for academic procrastination; that is, the more or less deep-rooted habit of leaving study tasks…

  14. The Effect of Curricular Activities on Learner Autonomy: The Perspective of Undergraduate Mechanical Engineering Students

    Science.gov (United States)

    Duarte, M.; Leite, C.; Mouraz, A.

    2016-01-01

    This study researches how first-year engineering students perceived the influence of curricular activities on their own learning autonomy, measured with an adaptation of the Personal Responsibility Orientation to Self-direction in Learning Scale (PRO-SDLS). Participants were questioned to assess the influence of the teacher's role. The results…

  15. From "F = ma" to Flying Squirrels: Curricular Change in an Introductory Physics Course

    Science.gov (United States)

    O'Shea, Brian; Terry, Laura; Benenson, Walter

    2013-01-01

    We present outcomes from curricular changes made to an introductory calculus-based physics course whose audience is primarily life sciences majors, the majority of whom plan to pursue postbaccalaureate studies in medical and scientific fields. During the 2011-2012 academic year, we implemented a Physics of the Life Sciences curriculum centered on…

  16. An Exploratory Study of the Curricular Integration of Ethics in Executive MBA Programs

    Science.gov (United States)

    Franco, Jaime M.

    2011-01-01

    An Exploratory Study of the Curricular Integration of Ethics in Executive MBA Programs News headlines of corporate scandals have unleashed a contentious debate of whether or not graduate management education has contributed to corporate collapses and the resultant financial crisis. In particular, questions abound as to the willingness of…

  17. Elite Rationalities and Curricular Form: "Meritorious" Class Reproduction in the Elite Thinking Curriculum in Singapore

    Science.gov (United States)

    Lim, Leonel; Apple, Michael W.

    2015-01-01

    While much of the critical scholarship around elite schooling has focused on the students who attend elite institutions, their social class locations, privileged habituses and cultural capital, this paper foregrounds curricular form itself as a central mechanism in the (re)production of elites. Using Basil Bernstein's conceptual framework of…

  18. Curricular Innovation for Sustainability: The Piedmont/Ponderosa Model of Faculty Development

    Science.gov (United States)

    Barlett, Peggy F.; Chase, Geoffrey W.

    2012-01-01

    Curricular innovation is at the center of the challenges many colleges and universities face as they seek to help students address more successfully than previous generations the complex, multi-faceted, systemic challenges of global climate change, population growth, loss of biodiversity, environmental justice, toxic wastes, and food insecurity.…

  19. Curricular Adaptations in Inpatient Child Psychiatry for the 21st Century: The Flexner Model Revisited

    Science.gov (United States)

    Bell, Cathy K.; Guerrero, Anthony; Matsu, Courtenay; Takeshita, Junji; Haning, William; Schultz, Karen

    2010-01-01

    Objective: The authors describe curricular modifications created in response to the changing culture of medical education, health care systems, academic medicine, and generational differences. The authors propose a model child psychiatry inpatient curriculum that is sustainable within a community teaching hospital in the 21st century. Methods: The…

  20. Little Shrimp, Big Results: A Model of an Integrative, Cross-Curricular Activity

    Science.gov (United States)

    Ackerson, Nicole; Piser, Carol; Walka, Keith

    2010-01-01

    This integrative, cross-curricular lab engages middle school biology students in an exercise involving ecology, arthropod biology, and mathematics. Students research the anatomy and behavioral patterns of a species of brine shrimp, compare the anatomy of adult and juvenile brine shrimp, and graph and interpret results. In this article, the authors…

  1. An Overview of Extra-Curricular Education for Sustainable Development (ESD) Interventions in UK Universities

    Science.gov (United States)

    Lipscombe, Bryan P.; Burek, Cynthia V.; Potter, Jacqueline A.; Ribchester, Chris; Degg, Martin R.

    2008-01-01

    Purpose: The purpose of this paper is to explore the extent and type of extra-curricular ESD-related practice in UK universities and to record opinions about the utility of such work. Design/methodology/approach: A postal questionnaire survey of all UK universities was undertaken in 2006. Over half (51 percent) of the UK's 140 universities with…

  2. Effects of drying method and particle size on the antioxidant properties of leaves and teas of Morus alba, Lagerstroemia speciosa and Thunbergia laurifolia

    Directory of Open Access Journals (Sweden)

    Eric Wei Chiang Chan

    2012-01-01

    Full Text Available Antioxidant properties (AOP of leaves and teas of Morus alba L., Lagerstroemia speciosa (L. Pers. and Thunbergia laurifolia Lindl. as affected by microwave, oven and freeze drying were assessed. Total phenolic content (TPC, radical scavenging ability expressed as ascorbic acid equivalent capacity (AEAC and ferric reducing power (FRP were screened using the Folin-Ciocalteu, 2,2-diphenyl-1-picrylhydrazyl (DPPH and potassium ferricyanide assays, respectively. The effects of particle size were also investigated. Microwave drying resulted in enhanced AOP in M. alba and T. laurifolia. Oven drying resulted in declined AOP in T. laurifolia with M. alba and L. speciosa relatively unchanged. Significant increase in AOP was observed in freeze-dried leaves of M. alba with L. speciosa and T. laurifolia showing no change or slight increase. TPC, AEAC and FRP of ground microwave-, oven- and freeze-dried leaves of M. alba extracted with 50% methanol were significantly higher than shredded leaves. For tea infusions extracted with hot water, three categories were recognised, i.e. species with shredded leaves yielding stronger AOP (M. alba, species with ground leaves yielding stronger AOP (L. speciosa, and species with ground and shredded leaves yielding comparable AOP (T. laurifolia.

  3. Antidepressant-Like Effects of the Ethyl Acetate Soluble Fraction of the Root Bark of Morus alba on the Immobility Behavior of Rats in the Forced Swim Test

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    Dong Wook Lim

    2014-06-01

    Full Text Available In this study, the antidepressant-like effects of Morus alba fractions in rats were investigated in the forced swim test (FST. Male Wistar rats (9-week-old were administered orally the M. alba ethyl acetate (EtOAc 30 and 100 mg/kg and M. alba n-butanol fractions (n-BuOH 30 and 100 mg/kg every day for 7 consecutive days. On day 7, 1 h after the final administration of the fractions, the rats were exposed to the FST. M. alba EtOAc fraction at the dose of 100 mg/kg induced a decrease in immobility behavior (p < 0.01 with a concomitant increase in both climbing (p < 0.05 and swimming (p < 0.05 behaviors when compared with the control group, and M. alba EtOAc fraction at the dose of 100 mg/kg decreased the hypothalamic-pituitary-adrenal (HPA axis response to the stress, as indicated by an attenuated corticosterone response and decreased c-fos immunoreactivity in the hippocampal and hypothalamic paraventricular nucleus (PVN region. These findings demonstrated that M. alba EtOAc fraction have beneficial effects on depressive behaviors and restore both altered c-fos expression and HPA activity.

  4. Antidepressant-like effects of the ethyl acetate soluble fraction of the root bark of Morus alba on the immobility behavior of rats in the forced swim test.

    Science.gov (United States)

    Lim, Dong Wook; Kim, Yun Tai; Park, Ji-Hae; Baek, Nam-In; Han, Daeseok

    2014-06-12

    In this study, the antidepressant-like effects of Morus alba fractions in rats were investigated in the forced swim test (FST). Male Wistar rats (9-week-old) were administered orally the M. alba ethyl acetate (EtOAc 30 and 100 mg/kg) and M. alba n-butanol fractions (n-BuOH 30 and 100 mg/kg) every day for 7 consecutive days. On day 7, 1 h after the final administration of the fractions, the rats were exposed to the FST. M. alba EtOAc fraction at the dose of 100 mg/kg induced a decrease in immobility behavior (p swimming (p < 0.05) behaviors when compared with the control group, and M. alba EtOAc fraction at the dose of 100 mg/kg decreased the hypothalamic-pituitary-adrenal (HPA) axis response to the stress, as indicated by an attenuated corticosterone response and decreased c-fos immunoreactivity in the hippocampal and hypothalamic paraventricular nucleus (PVN) region. These findings demonstrated that M. alba EtOAc fraction have beneficial effects on depressive behaviors and restore both altered c-fos expression and HPA activity.

  5. Construcción politica de reformas curriculares: El caso de Chile en los noventa

    Directory of Open Access Journals (Sweden)

    Cristián Cox

    2006-01-01

    Full Text Available El autor es un experto implicado en el proceso de diseño curricular vivido en Chile desde la promulgación del LOCE en 1990. El artículo, Basándose en esta experiencia, el artículo describe con detalle este proceso. Muestra las claves, circunstancias y momentos del proceso de construcción y desarrollo de una reforma curricular. Da cuenta de los procesos y contextos que intervienen en ello. Señala que tiene un proceso de construcción política. Pero no sólo se deben a este tipo de decisiones (como marco ideológico y social de decisiones y poder. Los procesos reflexivos que acompañan la toma de decisiones y los cursos de acción generados son importantes. Como también lo es la historia. Incluso los lineamientos curriculares y las presiones hacia el cambio que se den globalmente pueden influir bastante. Así muestra como en Chile, a pesar de partir de una política educativa en la que no había entrado la idea de currículum, ésta empieza a emerger conforme se va construyendo su desarrollo práctico y curricular. De todas las lecciones aprendidas en el proceso destaca que son componentes clave del proceso la participación y la innovación. Argumenta que hay razones sustantivas y políticas para ello. La primera es clave para que el profesorado se apropie de la propuesta de reforma y la haga posible. Por último, destaca que se produce un desarrollo de las capacidades institucionales de diseño y desarrollo curricular en la medida que se ponen en marcha y acumulan procesos de este tipo.

  6. ¿Cómo representar el conocimiento curricular del profesorado de ciencias y su evolución?

    OpenAIRE

    Solís Ramírez, Emilio; Porlán Ariza, Rafael; Rivero García, Ana

    2012-01-01

    En este trabajo se presentan algunos instrumentos de investigación para representar el conocimiento curricular del profesorado de ciencias. Dichos instrumentos se han construido y experimentado utilizando como técnica el análisis de contenido de documentos escritos, en el marco teórico del proyecto curricular ires (Investigación y Renovación Escolar). In this work present some instruments of investigation to represent the Knowledge Curricular of the Teachers of Sciences. Said instruments h...

  7. ¿Cómo representar el conocimiento curricular de los profesores de ciencias y su evolución?

    OpenAIRE

    Solís Ramírez, Emilio; Porlán Ariza, Rafael; Rivero García, Ana

    2012-01-01

    En este trabajo se presentan algunos instrumentos de investigación para representar el conocimiento curricular del profesorado de ciencias. Dichos instrumentos se han construido y experimentado utilizando como técnica el análisis de contenido de documentos escritos, en el marco teórico del proyecto curricular ires (Investigación y Renovación Escolar). In this work present some instruments of investigation to represent the Knowledge Curricular of the Teachers of Sciences. Said i...

  8. Alguns obstáculos à construção de projectos curriculares promotores da equidade

    OpenAIRE

    Sousa, Francisco

    2010-01-01

    Comunicação apresentada no IX Colóquio sobre Questões Curriculares/V Colóquio Luso-Brasileiro, sob o tema "Debater o currículo e os seus campos – políticas, fundamentos e práticas", realizado na Universidade do Porto - FPCEUP - de 21 a 23 de Junho de 2010. É hoje claro que nem a uniformidade curricular, que começou a ser sistematicamente criticada em Portugal há quase vinte anos (Formosinho, 1991, 1993), nem a diferenciação curricular estratificadora – isto é, associada a uma lógica de atr...

  9. Doutorado sanduíche: considerações para uma experiência de sucesso no exterior Doctorado sándwich: consideraciones para una experiencia exitosa en el extranjero 'Sandwich PhD': considerations for a successful experience abroad

    Directory of Open Access Journals (Sweden)

    Marina de Goes Salvetti

    2013-03-01

    Full Text Available O estágio de doutorado no exterior, conhecido, no Brasil, como "Doutorado Sanduíche", é uma oportunidade de aprimorar as habilidades em pesquisa, destacar-se no meio acadêmico e estabelecer e/ou ampliar oportunidades de trabalho em contexto internacional. Neste artigo, descrevemos elementos-chave do processo de planejamento e desenvolvimento do Doutorado Sanduíche aprendidos por professores e alunos envolvidos na colaboração entre a Escola de Enfermagem da Universidade de São Paulo e a Lawrence S. Bloomberg Faculty of Nursing, Universidade de Toronto, Canadá, e apresentamos a participação em uma rede de doutorados, como alternativa ao Doutorado Sanduíche. A experiência internacional, quando bem planejada e desenvolvida, promove o desenvolvimento pessoal e profissional do aluno, favorece a internacionalização dos programas de pós-graduação e dos grupos de pesquisa brasileiros.Una estancia de doctorado internacional, "Doctorado Sándwich" como es conocido en Brasil, es una oportunidad de mejorar las habilidades de investigación, hacerse conocido académicamente y establecer y/o agrandar las oportunidades de trabajo en el contexto internacional. En este artículo, nosotros describimos factores importantes del proceso de la planificación y desarrollo del "Doctorado Sándwich" aprendidos por estudiantes y profesores involucrados en la colaboración entre la Escuela de Enfermería de la Universidad de São Paulo y la Facultad de Enfermería Lawrence S. Bloomberg, Universidad de Toronto, Canadá y presentamos la participación en una red de doctorados como una alternativa a la estancia doctoral internacional. La experiencia internacional, cuando bien planeada y desarrollada, promueve el desarrollo personal y profesional del estudiante y favorece la internacionalización de los programas de postgrado y de los grupos de investigación brasileños.International PhD internship, named "Sandwich PhD'" in Brazil, is an opportunity to

  10. Apuntes para una historia del gremio de albañiles de Quito. Ciudad y cultura popular

    Directory of Open Access Journals (Sweden)

    Eduardo Kingman

    2006-11-01

    Full Text Available A partir de las entrevistas realizadas a miembros del gremios de albañiles de Quito, el artículo formula algunas hipótesis sobre la formación de la cultura popular en la primera mitad del siglo XX. El gremio de albañiles se desarrolló en el contexto de una ciudad que pretendía ser moderna pero que, al mismo tiempo, reprodujo el privilegio y determinadas formas de violencia simbólica propias de una sociedad más tradicional. Frente a estas concepciones de privilegio, el estudio explora las nociones de raza popular y de respeto que emergen desde el espacio popular. Paralelamente, el artículo discute algunos problemas metodológicos y éticos relacionados con el método hagiográfico y con la posibilidad de escribir una historia de los trabajadores.

  11. Profil hlapljivih tvari hrvatskih medova lipe (Tilia sp.), medljikovca jele (Abies alba) i meda kadulje (Salvia officinalis)

    OpenAIRE

    Lušić, Dražen; Koprivnjak, Olivera; Ćurić, Duška; Sabatini, Anna G.; Conte, Lanfranco S.

    2007-01-01

    Profili hlapljivih tvari meda lipe (Tilia sp.), medljikovca jele (Abies alba) i meda kadulje (Salvia officinalis), proizvedeni u Hrvatskoj, istraživani su najprije metodom mikroekstrakcije na čvrstoj fazi (head space solid phase microextraction, HS-SPME), a zatim s plinskom kromatografijom i masenom spektrometrijom (gas chromatography-mass spectrometry, GC-MS). Botaničko porijeklo uzoraka meda potvrđeno je melisopalinološkom i senzorskom analizom. Prvi su put opisana senzorska svojstva meda o...

  12. Tree-ring growth and climate response of silver fir (Abies alba Mill. in Basilicata (Southern Italy

    Directory of Open Access Journals (Sweden)

    Todaro L

    2008-03-01

    Full Text Available A dendroclimatic study on silver fir (Abies alba Mill. was carried out in the Abetina of Ruoti (PZ, Basilicata - southern Italy, a nearly natural mixed Quercus cerris - Silver fir forest. Observations were made on twenty-three large size dominant silver fir trees and dendroecological analyses performed for the period 1866-2007. Results show that late spring/summer precipitations, rather than temperatures, are the most critical factor affecting silver fir growth in this area.

  13. White Mulberry (Morus alba) Foliage Methanolic Extract Can Alleviate Aeromonas hydrophila Infection in African Catfish (Clarias gariepinus)

    OpenAIRE

    Atefeh Sheikhlar; Abd Razk Alimon; Hassan Daud; Saad, Chee R.; Webster, Carl D.; Goh Yong Meng; Mahdi Ebrahimi

    2014-01-01

    Two experiments were simultaneously conducted with Morus alba (white mulberry) foliage extract (MFE) as a growth promoter and treatment of Aeromonas hydrophila infection in separate 60 and 30 days trail (Experiments 1 and 2, resp.) in African catfish (Clarias gariepinus). In Experiment 1, four diets, control and control supplemented with 2, 5, or 7 g MFE/kg dry matter (DM) of diet, were used. In Experiment 2, fish were intraperitoneally infected with Aeromonas hydrophila and fed the same diet...

  14. Penetration, Development, and Reproduction of Heterodera schachtii on Fagopyrum esculentum, Phacelia tanacetifolia, Raphanus sativus, Sinapis alba, and Brassica oleracea

    OpenAIRE

    Gardner, J.; Caswell-Chen, E. P.

    1993-01-01

    The penetration, development, and reproduction of a California population of the sugarbeet cyst nematode, Heterodera schachtii, was observed on cultivars of cabbage (Brassica oleracea), phacelia (Phacelia tanacetifolia), buckwheat (Fagopyrum esculentum), oilseed radish (Raphanus sativus), and white mustard (Sinapis alba). With the exception of the nonhost, phacelia, all were readily penetrated by second-stage juveniles of H. schachtii. After 38 days at 25 C, no cysts were observed on phacelia...

  15. Effects of Basella alba and Hibiscus macranthus extracts on testosterone production of adult rat and bull Leydig cells

    Institute of Scientific and Technical Information of China (English)

    Paul F. Moundipa; Nathalie Sara E. Beboy; Fabien Zelefack; Silvère Ngouela; Etienne Tsamo; Wolf-Bernhard Schill; Thomas K. Monsees

    2005-01-01

    Aim: To determine the androgenic effects of Basella alba and Hibiscus macranthus extracts in the rat and the bull,and to develop a novel in vitro test system using Leydig cells from bull testes. Methods: The effect of methanol extracts from both plants on testosterone production in isolated Leydig cells from the rat and the bull was analyzed using 125I-radioimmunoassay (125I-RIA). Rat Leydig cells were obtained by common methods, whereas a novel technique was used to purify Leydig cells from bull testes. Results: Bull testes from the slaughter house were a cheap source of pure Leydig cells. In culture, these cells produced testosterone for 5-6 days, which can be stimulated by human chorionic gonadotrophin (hCG). Basella alba extracts significantly enhanced testosterone production in bull and rat Leydig cells in a concentration-dependent manner. Hibiscus macranthus showed no androgenic effect but was shown to inhibit testosterone production at higher concentrations. Conclusion: Leydig cells purified from bull testes can be used as an alternative tool in experimental animal research. Certain fractions of Basella alba extract demonstrated androgenic potential whereas Hibiscus macranthus extracts did not.

  16. HMG-CoA reductase inhibitory activity and phytocomponent investigation of Basella alba leaf extract as a treatment for hypercholesterolemia

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    Baskaran G

    2015-01-01

    Full Text Available Gunasekaran Baskaran,1 Shamala Salvamani,1 Siti Aqlima Ahmad,1 Noor Azmi Shaharuddin,1 Parveen Devi Pattiram,2 Mohd Yunus Shukor1 1Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, 2Department of Food Technology, Faculty of Food Science and Technology, Universiti Putra Malaysia, Selangor, Malaysia Abstract: The enzyme 3-hydroxy-3-methyl-glutaryl-coenzyme A (HMG-CoA reductase is the key enzyme of the mevalonate pathway that produces cholesterol. Inhibition of HMG-CoA reductase reduces cholesterol biosynthesis in the liver. Synthetic drugs, statins, are commonly used for the treatment of hypercholesterolemia. Due to the side effects of statins, natural HMG-CoA reductase inhibitors of plant origin are needed. In this study, 25 medicinal plant methanol extracts were screened for anti-HMG-CoA reductase activity. Basella alba leaf extract showed the highest inhibitory effect at about 74%. Thus, B. alba was examined in order to investigate its phytochemical components. Gas chromatography with tandem mass spectrometry and reversed phase high-performance liquid chromatography analysis revealed the presence of phenol 2,6-bis(1,1-dimethylethyl, 1-heptatriacotanol, oleic acid, eicosyl ester, naringin, apigenin, luteolin, ascorbic acid, and a-tocopherol, which have been reported to possess antihypercholesterolemic effects. Further investigation of in vivo models should be performed in order to confirm its potential as an alternative treatment for hypercholesterolemia and related cardiovascular diseases. Keywords: HMG-CoA reductase, Basella alba, phytochemical, GC-MS/MS, RP-HPLC, hypercholesterolemia

  17. Life history and vertical distribution of the mesopelagic fish Cyclothone alba (family Gonostomatidae) in Sagami Bay, Central Japan

    Science.gov (United States)

    Miya, Masaki; Nemoto, Takahisa

    1986-08-01

    Life history and vertical distribution of the mesopelagic fish Cyclothone alba (family Gonostomatidae) are described on the basis of over 4000 specimens taken during a series of 15 cruises from December 1982 to December 1984 at a station near the center of Sagami Bay, Central Japan. C. alba does not undertake diel vertical migrations, being concentrated in the mesopelagic zone between 300 and 500 m, with peak abundance at 350 m both day and night. Spawning occurs mainly during the late spring and summer months in Sagami Bay. C. alba is semelparous, releasing about 200-650 eggs at the end of its life. Duration of the egg and larval stages is estimated to be about 2-3 months. Many males and some females mature at 1 year, and all individuals mature by 2 years of age. Sexual dimorphism in smaller males and larger females results from an earlier decline of growth rate in males: on the average, males reach 17.5 mm SL (standard length) in 1 year and 21 mm SL in 2 years, whereas females reach 19 mm SL in 1 year and 26 mm SL in 2 years. It is suggested that such precocious maturation, together with its small larvalized form, is attained through progenesis.

  18. Evaluation of hydro-alcoholic extract of Eclipta alba for its multidrug resistance reversal potential: an in vitro study.

    Science.gov (United States)

    Chaudhary, Harshita; Jena, Prasant Kumar; Seshadri, Sriram

    2013-01-01

    The development of multidrug resistance (MDR) causes problems in the chemotherapy of human cancer. The present study was designed to evaluate and establish the role of Eclipta alba as MDR reversal agent using multidrug resistant hepatocellular carcinoma cell line (DR-HepG2). To develop DR-HepG2, hepatocellular carcinoma cell line (HepG2) was transfected with 2-Acetylaminofluorene (AAF) and Aflatoxin B1 (AFB). Cytotoxic effects of the Eclipta alba hydroalcoholic extract (EAE) and standard anti-ancer drug Doxorubicin (DOX) were determined in DR-HepG2 and the parental cells HepG2 using MTT assay. The expression level of MDR1 gene and P-glycoprotein (P-gp) level was analyzed by RT-PCR and western blotting. From the present investigation, it was found that EAE (10 and 20 μg/ml) could significantly inhibit cell proliferation in DR-HepG2 whereas DOX (0.5 μg/ml) could not because of enhancement effect of MDR1/P-gp. This study demonstrated for the first time the antiproliferative activities of EAE in multidrug resistant DR-HepG2 cells. The findings revealed that Eclipta alba components are effective inhibitors of MDR1/P-gp. PMID:23859045

  19. Eco-geographical variation in the diet of the Barn Owl (Tyto alba in mountainous areas of France

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    Halliez Guillaume

    2015-12-01

    Full Text Available Because of the worldwide distribution of the Barn Owl (Tyto alba and the easily way to find its pellets, it is often used to diet studies. To investigate the eco-geographical impact of mountainous areas on its diet, we conducted studies in the Jura, Alpes, Central and Pyrénées mountains and we also did pellet analysis from 8 sites in the Jura mountains. Analysis of the tooth and skull content of pellets allowed us to draw up two types of change in the diet of Tyto alba in correlation with mountain elevation. The first one concerns the Jura, Alpes and Central mountains, where the diversity of the diet declines with the increase in elevation. The second one concerns the Pyrénées mountains, where there is no change in the diversity of the diet, perhaps because of the higher diversity of small mammals caused by mediterranean influence. Thus, it seems that elevation cau ses a decrease in diet diversity of Tyto alba in continental mountains (Jura, Alpes and Central mountains probably because of more homogeneous landscapes dedicated to grass production. However, in Mediterranean mountains (Pyrénées, a more diversified small mammal guild provides a constant level of diet diversity.

  20. Hepatoprotective Effect of Aqueous Acetone Extract of Sida alba L. (Malvaceae Against Alcohol Induced Liver Damage in albinos Wistar Rats

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    K. Konaté

    2011-02-01

    Full Text Available The present study was conducted to evaluate the hepatoprotective effects of aqueous acetone extract of Sida alba. (Malvaceae an herbal plant used in Burkina Faso to treat traditionally hepatics affections in albinos Wistar rats. Animals were treated by gavage during 28 days with different doses of aqueous acetone extracts of Sida alba. (75, 100, 150 mg/kg suspended in 35% ethanol. Control groups received alcohol 35% and water. In vivo administration of 35% ethano l for 28 days results an activity of liver marker enzymes (AST, ALT, ALP, glucose, triglycerides, total cholesterol, total bilirubin and direct bilirubin in serum as compared with rats which received water (control water. However, administrations of 35% ethanol along with aqueous acetone extract decreased the activities of liver markers enzyme in serum comparatively to the control water group (p0.05 and p<0.05. This study revealed that Sida alba presents a hepatoprotective potential and this plant could be traditionally exploited in the treatment of affection hepatics.

  1. Basella alba rubra spinach pigment-sensitized TiO2 thin film-based solar cells

    Science.gov (United States)

    Gokilamani, N.; Muthukumarasamy, N.; Thambidurai, M.; Ranjitha, A.; Velauthapillai, Dhayalan

    2015-03-01

    Nanocrystalline TiO2 thin films have been prepared by sol-gel dip coating method. The X-ray diffraction results showed that TiO2 thin films annealed at 400, 450 and 500 °C are of anatase phase and the peak corresponding to the (101) plane is present in all the samples. The grain size of TiO2 thin films was found to increase with increasing annealing temperature. The grain size is found to be 20, 25 and 33 nm for the films annealed at 400, 450 and 500 °C. The structure of the TiO2 nanocrystalline thin films have been examined by high-resolution transmission electron microscope, Raman spectroscopy and FTIR spectroscopy. TiO2 thin films were sensitized by natural dyes extracted from basella alba rubra spinach. It was found that the absorption peak of basella alba rubra extract is at about 665 nm. The dye-sensitized TiO2-based solar cell sensitized using basella alba rubra exhibited a J sc of 4.35 mA cm-2, V oc of 0.48 V, FF of 0.35 and efficiency of 0.70 %. Natural dyes as sensitizers for dye-sensitized solar cells are promising because of their environmental friendliness, low-cost production and fully biodegradable.

  2. Potential for phytoextraction of copper by Sinapis alba and Festuca rubra cv. Merlin grown hydroponically and in vineyard soils.

    Science.gov (United States)

    Malagoli, Mario; Rossignolo, Virginia; Salvalaggio, Nico; Schiavon, Michela

    2014-03-01

    The extensive use of copper-bearing fungicides in vineyards is responsible for the accumulation of copper (Cu) in soils. Grass species able to accumulate Cu could be cultivated in the vineyard inter-rows for copper phytoextraction. In this study, the capacity of Festuca rubra cv Merlin and Sinapis alba to tolerate and accumulate copper (Cu) was first investigated in a hydroponic system without the interference of soil chemical-physical properties. After the amendment of Cu (5 or 10 mg Cu l-(1)) to nutrient solution, shoot Cu concentration in F. rubra increased up to 108.63 mg Cu kg(-1) DW, more than three times higher than in S. alba (31.56 mg Cu kg(-1) DW). The relationship between Cu concentration in plants and external Cu was dose-dependent and species specific. Results obtained from the hydroponic experiment were confirmed by growing plants in pots containing soil collected from six Italian vineyards. The content of soil organic matter was crucial to enhance Cu tolerance and accumulation in the shoot tissues of both plant species. Although S. alba produced more biomass than F. rubra in most soils, F. rubra accumulated significantly more Cu (up to threefold to fourfold) in the shoots. Given these results, we recommended that F. rubra cv Merlin could be cultivated in the vineyard rows to reduce excess Cu in vineyard soils. PMID:24234763

  3. Diretrizes curriculares para o curso de pedagogia: trajetória longa e inconclusa Curricular guindelines for the pedagogy course: long and unfinished trajectory

    Directory of Open Access Journals (Sweden)

    Leda Scheibe

    2007-04-01

    Full Text Available Este artigo aborda as discussões e embates acerca da definição das diretrizes curriculares para o Curso de Pedagogia, ocorridos após a aprovação da Lei de Diretrizes e Bases da Educação Nacional de 1996. Focaliza o processo de mobilização e resistência das entidades do campo educacional no sentido de assegurar a docência como base para esse curso e a superação da dicotomia entre licenciatura e bacharelado no seu interior. A análise aponta como cerne do embate a contraposição ao modelo de formação dos Institutos Superiores de Educação e de Cursos Normais Superiores, veiculado pela reforma educacional da década de 1990, o qual se insere em um contexto de políticas neoliberais. Indica ainda que a recente aprovação de diretrizes curriculares para o Curso de Pedagogia (Parecer CNE/CP 5/2005 e Resolução CNE/CP 1/2006 e sua definição como uma licenciatura que forma unificadamente o professor para a educação infantil e anos iniciais do ensino fundamental, constitui uma solução negociada entre as entidades e o Conselho Nacional de Educação.This article addresses the discussions about the definition of curricular guidelines for the Pedagogy Course, as well as the oppositions to them, which occurred after the passage of the National Educational Guidelines and Framework Law of 1996. It focuses the process of mobilization and resistance of the institutions in the educational area in order to ensure teaching as the basis for this course and the overcoming of the dichotomy between teacher certification (licenciatura and bachelor degree in its interior. The analysis indicates that the central issue is the opposition to the education model of Higher Education Institutes and Higher Basic Education Teacher Education Programs, created by the education reform in the 1990s, which is inserted in a context of neoliberal policies. It also shows that the recent passage of the curricular guidelines for the Pedagogy Course (Official

  4. A importância do conhecimento escolar em propostas curriculares alternativas The importance of school knowledge for alternative curricular proposals

    Directory of Open Access Journals (Sweden)

    Antonio Flavio Barbosa Moreira

    2007-06-01

    Full Text Available O artigo focaliza um processo de construção curricular em uma escola da rede municipal de Belo Horizonte, no qual vigora a proposta oficial da ESCOLA PLURAL. Destaca as dificuldades vividas pelo corpo docente da escola e desenvolve o argumento de que propostas curriculares inovadoras podem criar um espaço discursivo no qual se segregam as crianças das camadas populares, reduzindo suas possibilidades de autonomia na sociedade. Com base nas concepções de política de Stephen Ball e Jenny Ozga, analisam-se os textos políticos da Escola Plural e de uma escola da rede municipal. Verificou-se a complexa relação entre documentos oficiais e experiências locais, bem como a necessidade de se afirmar a importância do conhecimento escolar no currículo. Argumenta-se que a supervalorização do aluno e de suas experiências culturais, em associação com a secundarização do conhecimento escolar, pode criar um espaço em que a criança seja confinada e jamais vista como normal.The paper focuses on a process of curriculum construction which was developed in a school from the Belo Horizonte educational system. The school is organized according to the official curricular proposal entitled PLURAL SCHOOL. It emphasizes the difficulties which were faced by the academic staff of the school and argues that innovative curricular proposals may create a space in which children from working class are segregated and have their possibilities of autonomy in society reduced. Drawing on the conceptions of politics by Stephen Ball and Jenny Ozga, the political texts, written on the level of the Plural School proposal and on the level of the school, are analyzed. The complex relations among official documents and local experiences are emphasized. The importance of school knowledge is stressed. It is argued that the overvaluation of the students and their cultural experiences and the undervaluation of school knowledge can create a space in which children are

  5. Vozes e temas que perpassam o discurso curricular do curso de Letras = Voices and themes which cross the curricular discourse of Letras course

    Directory of Open Access Journals (Sweden)

    Eliana Merlin Deganutti de Barros

    2010-07-01

    Full Text Available Este artigo objetiva analisar e discutir o Projeto Político Pedagógico do currículo do curso de Letras da UEL – licenciatura em Língua Portuguesa e respectivas literaturas – implantado em 2006. As discussões levantadas giram em torno das temáticas que atravessam a discursividade do texto curricular, de como essas se configuram comovozes de discursos oficiais da educação e de como são abordadas pela textualidade do documento. Os temas detectados e discutidos à luz de teorias acerca de currículos são: desarticulação entre estudos linguísticos e literários; estudos linguísticos desvinculados douso da língua; articulação entre formação teórica e prática pedagógica; ensino reflexivo voltado para práticas investigativas; o papel da língua na sociedade; ética profissional; domínio dos novos recursos técnico-pedagógicos; e práticas democráticas da educação.Entre outras questões, a análise aponta como é recorrente o interdiscurso entre o texto curricular e os vários discursos oficiais da educação, esses materializados em documentos curriculares, diretrizes e parâmetros. This article aims to analyze and discuss the political-pedagogical project of the curriculum of Letras Course / UEL - degree in Portuguese language and its literature - implemented in 2006. The discussions concern the themes that cross the curricular textdiscursivity, how they are constituted as voices of the official education discourse and how they are dealt by the textuality of the document. The themes identified and discussed according to theories about curriculum are: disconnection between linguistic and literarystudies; language studies detached from the use of language; articulation between theoretical formation and teaching practice; reflective teaching towards investigative practices; the role of language in society; professional ethics; command of new technicaland pedagogical resources; democratic practices in education. Among other

  6. Genetic and environmental characterization of Abies alba Mill. populations at its western rear edge

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    Sancho-Knapik, D.

    2014-12-01

    Full Text Available The genetic structure of ten Abies alba populations at the western rear edge in the Spanish Pyrenees was characterized and compared with two German populations, looking for the role of climatic factors in the fir decline. Growth, defoliation, aridity and cumulative summer water deficit summer were also characterized. Spanish populations show a lower genetic diversity and a high genetic differentiation than German ones, mainly established by an East (higher diversity-West (lower diversity gradient. The three defoliated populations are the western ones, with higher summer aridity. Contrastingly, the southern population (Guara shows climatic variables close to western sites but without defoliation and with a higher genetic diversity, indicating a possible adaptation to the sub-Mediterranean conditions. Silver fir in the Spanish Pyrenees constitutes a “stable” rear edge because of their isolation, small sized and small genetic diversity. Western Pyrenean sites subjected to dryer conditions and presenting lower genetic diversity are prone to drought-induced mortality in the context of global warming.Se ha caracterizado la estructura genética de diez poblaciones de Abies alba en la retaguardia occidental de su distribución en el Pirineo español en comparación con dos poblaciones de Alemania, buscando la influencia de factores climáticos en el decaimiento del abeto. También se caracterizó crecimiento, defoliación, aridez y déficit acumulado de agua durante el verano. Las poblaciones españolas mostraron una menor diversidad genética y una mayor diferenciación genética que las poblaciones alemanas, establecida principalmente a través de un eje Este (mayor diversidad-Oeste (menor diversidad. Las tres poblaciones con defoliación son las del suroeste, con mayor aridez estival. Por el contrario, la población más meridional (Guara muestra variables climáticas cercanas a estas poblaciones del suroeste pero sin defoliación y con mayor

  7. Resultados preliminares del forraje de Morus alba en la alimentación de vacas lecheras

    Directory of Open Access Journals (Sweden)

    M. Milera

    2007-01-01

    Full Text Available El objetivo del presente trabajo consistió en evaluar el potencial del forraje de M. alba con vacas mestizas para la producción de leche. El trabajo se desarrolló en Cuba, la cual se encuentra localizada entre los 19° y 81’ de longitud oeste. La Estación Experimental de Pastos y Forrajes “Indio Hatuey” está ubicada en el municipio de Perico, provincia de Matanzas, sobre un suelo ferralítico rojo, a los 22° 40’ 7’’ de latitud norte y 81° 2’ de longitud oeste, a una altura de 10.91 msnm. La evaluación se hizo con vacas mestizas del cruce Holstein x Cebú, que tenían 54 días de lactancia. El estudio se dividió en dos periodos: en el primero (que duró 53 días se suministró el forraje de morera ad libitum, sin trocear, y se pastoreó de forma restringida en gramíneas mejoradas de secano, sin fertilización; en el segundo periodo, los animales dispusieron de pastoreo de gramíneas mejoradas con un 10% de un área establecida con Leucaena leucocephala y recibieron forraje de morera restringido hasta el 1% del peso vivo; éste tuvo una duración de 87 días. Se determinó la disponibilidad de pasto, la composición bromatológica y el consumo de forraje de Morus alba, así como la producción de leche de las vacas. El forraje de morera presentó altos va- lores de proteína y bajos contenidos de fibra; los consumos en el primer periodo llegaron hasta 2.7% del peso vivo. La producción de leche promedio fue de 10.6 kg/vaca/día durante los 140 días de evaluación y la máxima producción se registró en los primeros 53 días (1 kg/vaca/día. Los resultados demostraron la alta calidad de la morera cuando se utiliza como forraje para la alimentación de vacas mestizas. En las condiciones evaluadas, es posible obtener producciones de 10 litros por animal diariamente, cuando se utiliza el forraje de morera en adición al pasto de especies mejoradas, sin suplementación de concentrados.

  8. Las formas verbales en las biblias de Alba y Ferrara: ¿fidelidad al texto hebreo?

    Directory of Open Access Journals (Sweden)

    del Barco del Barco, Francisco Javier

    2004-12-01

    Full Text Available This article focuses on the study of narrative and prophetic texts in the Ferrara and Alba Bibles and on their comparison to the Hebrew original. The aim of such a study is to find the keys to their systems of translation within the medieval Jewish tradition of Biblical translations. One of the most remarkable aspects is the translation of the verbal forms from Biblical Hebrew to Spanish. What is interesting about this aspect is how the translators understand the verbal system of Biblical Hebrew and how they converted it into 15th and 16th century Castillan, as well as the existing differences in the translation of both bibles; this fact will be illustrated with abundant examples. The linguistic aspect is offered here in its sociological and cultural context, as factors that affect translation methods.

    Este artículo se centra en el estudio de textos narrativos y proféticos de las biblias de Alba y Ferrara y en su comparación con el original hebreo. El fin de tal estudio es hallar las claves de sus sistemas de traducción dentro de la tradición judía medieval de traducciones bíblicas. Uno de los aspectos más destacables es la traducción de las formas verbales del hebreo bíblico al español. El interés en este punto está en ver cómo los traductores entienden el sistema verbal del hebreo bíblico y lo vierten al castellano de los ss. XV y XVI, así como en las diferencias de traducción existentes entre ambas biblias, que será ilustrado con numerosos ejemplos. El aspecto lingüístico se presenta aquí en su contexto sociológico y cultural, como factores que influyen en los métodos de traducción.

  9. Wide Ranging Insect Infestation of the Pioneer Mangrove Sonneratia alba by Two Insect Species along the Kenyan Coast

    Science.gov (United States)

    Jenoh, Elisha Mrabu; Robert, Elisabeth M. R.; Lehmann, Ingo; Kioko, Esther; Bosire, Jared O.; Ngisiange, Noah; Dahdouh-Guebas, Farid; Koedam, Nico

    2016-01-01

    Insect infestation of mangroves currently threatens mangrove forest health and management. In the Western Indian Ocean region, little is known about insect damage to mangroves despite the fact that numerous infestations have occurred. In Kenya, infestations of Sonneratia alba have persisted for almost two decades, yet the taxonomic identity of the infesting pest(s), the extent of infestation, the pests’ biology, the impacts of infestation on host and the ecosystem, the host’s defensive strategies to the infestation are poorly understood. S. alba is a ubiquitous, pioneer mangrove species of the Indo-Pacific, occurring along the waterfront in a variety of mangrove ecosystem settings. Our main objectives were to identify the pest(s) responsible for the current dieback of S. alba in Kenya, and to determine the extent of infestation. To identify the pests responsible for infestation, we trapped emergent insects and reared larvae in the laboratory. To determine the overall extent of infestation within the S. alba zone, we assessed nine sites along the entire Kenyan coastline for the presence or absence of infested mangroves. Insect infestation in two mangrove embayments (Gazi and Mida) was quantified in depth. Two wood-boring insects were identified: a metarbelid moth (Lepidoptera, Cossoidea) of undescribed genus and the beetle Bottegia rubra (Cerambycidae, Lamiinae).The metarbelid moth infests mangroves in both northern (from Ngomeni to Kiunga) and southern regions (from Vanga to Mtwapa) of the Kenyan coast. B. rubra appeared in low density in Gazi, and in high density in Mida, Kilifi, and Ngomeni, with densities gradually decreasing northward. Insect infestation levels reached 18% in Gazi and 25% of S. alba stands in Mida. Our results indicate that B. rubra has the ability to infest young mangrove trees and expand its range, posing a danger to rehabilitation efforts where plantations have been established. Thus, there is great need for forest managers to address

  10. Wide Ranging Insect Infestation of the Pioneer Mangrove Sonneratia alba by Two Insect Species along the Kenyan Coast.

    Science.gov (United States)

    Jenoh, Elisha Mrabu; Robert, Elisabeth M R; Lehmann, Ingo; Kioko, Esther; Bosire, Jared O; Ngisiange, Noah; Dahdouh-Guebas, Farid; Koedam, Nico

    2016-01-01

    Insect infestation of mangroves currently threatens mangrove forest health and management. In the Western Indian Ocean region, little is known about insect damage to mangroves despite the fact that numerous infestations have occurred. In Kenya, infestations of Sonneratia alba have persisted for almost two decades, yet the taxonomic identity of the infesting pest(s), the extent of infestation, the pests' biology, the impacts of infestation on host and the ecosystem, the host's defensive strategies to the infestation are poorly understood. S. alba is a ubiquitous, pioneer mangrove species of the Indo-Pacific, occurring along the waterfront in a variety of mangrove ecosystem settings. Our main objectives were to identify the pest(s) responsible for the current dieback of S. alba in Kenya, and to determine the extent of infestation. To identify the pests responsible for infestation, we trapped emergent insects and reared larvae in the laboratory. To determine the overall extent of infestation within the S. alba zone, we assessed nine sites along the entire Kenyan coastline for the presence or absence of infested mangroves. Insect infestation in two mangrove embayments (Gazi and Mida) was quantified in depth. Two wood-boring insects were identified: a metarbelid moth (Lepidoptera, Cossoidea) of undescribed genus and the beetle Bottegia rubra (Cerambycidae, Lamiinae).The metarbelid moth infests mangroves in both northern (from Ngomeni to Kiunga) and southern regions (from Vanga to Mtwapa) of the Kenyan coast. B. rubra appeared in low density in Gazi, and in high density in Mida, Kilifi, and Ngomeni, with densities gradually decreasing northward. Insect infestation levels reached 18% in Gazi and 25% of S. alba stands in Mida. Our results indicate that B. rubra has the ability to infest young mangrove trees and expand its range, posing a danger to rehabilitation efforts where plantations have been established. Thus, there is great need for forest managers to address the

  11. Programa curricular de la segunda especialidad en formación magisterial

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    Elsa Tueros Way

    1993-06-01

    Full Text Available Este documento presenta las demandas para la formación de docentes objetivos de la Segunda Especialidad, se definen los perfiles real e ideal del docente de ISPs y se señalan los requisitos de los usuarios de este programa. Estos elementos sirven para sustentar la Estructura Curricular: Areas de estudio (Investigación Educativa,Teoría y Realidad Educativa, Diseño y Evaluación del Curriculum,y Desarrollo Comunal y Regional, el Plan de estudios y la descripciónde los cursos. Asimismo, se señala la estrategia que se empleará para el desarrollo curricular incluída la evaluación.

  12. Orientações Curriculares: que alicerces para a construção das aprendizagens.

    OpenAIRE

    Folque, Maria da Assunção

    2001-01-01

    Neste artigo faço algumas leituras possíveis do documento das Orientações Curriculares para a Educação Pré-escolar (OCEPE), procurando realçar alguns fundamentos que no meu entender podem constituir alicerces sólidos sobre os quais se constrói o edifício da aprendizagem e encontrar nesta leitura o contínuo com as opções curriculares presentes, também, nos documentos dos níveis de ensino seguintes. Partindo de alguns princípios das OCEPE (analisam-se as implicações desses princípios para a g...

  13. Models for Curricular Materials Development: Combining Applied Development Processes with Theory

    Science.gov (United States)

    Appleton, James; Lawrenz, Frances; Craft, Elaine; Cudmore, Wynn; Hall, Jim; Waintraub, Jack

    2007-12-01

    Developing curricular materials for technical and vocational education is particularly challenging because of the comprehensive requirements for technical education and the rapidity with which technical positions are evolving. Well-educated employees are expected to have general communication, reasoning, problem-solving, and behavioral skills in addition to occupation-specific technical knowledge. Furthermore, technical and vocational education materials must meet the needs of various contexts each with its own unique array of factors which must be accommodated. To assist in the process of materials development, this paper presents a comprehensive and contextualized model as a guide for curricular developers. This model was formed through the synthesis of two theoretical and four applied models, with the outline of the applied models occurring as part of a national evaluation of the National Science Foundation's Advanced Technological Education Program. Examples illuminating the elements of the template are provided.

  14. One Health in food safety and security education: A curricular framework.

    Science.gov (United States)

    Angelos, J; Arens, A; Johnson, H; Cadriel, J; Osburn, B

    2016-02-01

    The challenges of producing and distributing the food necessary to feed an anticipated 9 billion people in developed and developing societies by 2050 without destroying Earth's finite soil and water resources present extremely complex problems that lack simple solutions. The ability of modern societies to adequately address these and other food-related problems will require an educated workforce trained not only in traditional food safety, security, and public health, but also in other areas including food production, sustainable practices, and ecosystem health. To help address the need for such an educated workforce, a curricular framework was developed to assist those tasked with designing education and training for future food systems workers. One sentence summary: A curricular framework for education and training in food safety and security was developed that incorporates One Health concepts.

  15. One Health in food safety and security education: A curricular framework.

    Science.gov (United States)

    Angelos, J; Arens, A; Johnson, H; Cadriel, J; Osburn, B

    2016-02-01

    The challenges of producing and distributing the food necessary to feed an anticipated 9 billion people in developed and developing societies by 2050 without destroying Earth's finite soil and water resources present extremely complex problems that lack simple solutions. The ability of modern societies to adequately address these and other food-related problems will require an educated workforce trained not only in traditional food safety, security, and public health, but also in other areas including food production, sustainable practices, and ecosystem health. To help address the need for such an educated workforce, a curricular framework was developed to assist those tasked with designing education and training for future food systems workers. One sentence summary: A curricular framework for education and training in food safety and security was developed that incorporates One Health concepts. PMID:26851591

  16. Calculative practices in higher education: a retrospective analysis of curricular accounting about learning

    OpenAIRE

    Dixon, Keith

    2009-01-01

    Accounting has been shown to figure variously in New Higher Education. However, despite their infant precursors having been labelled curricular accounting (Theodossin, 1986), accounting researchers have overlooked a collection of calculative practices that has grown and spread internationally over the past two decades. The collection in question comprises credit points, levels of learning, level descriptors, learning outcomes, and related characteristics of student transcripts and diploma sup...

  17. Adaptaciones curriculares: Convergencias y divergencias de su implementación en el profesorado chileno

    Directory of Open Access Journals (Sweden)

    Braulio Ademir Navarro-Aburto

    2016-01-01

    Full Text Available Recibido 13 de marzo de 2015 • Corregido 29 de octubre de 2015 • Aceptado 17 de noviembre de 2015La presente investigación describe el proceso que se realiza para llevar a cabo las adaptaciones curriculares, en la asignatura de matemática para el alumnado que presenta algún tipo de necesidad educativa especial transitoria. Se ha considerado la coordinación existente entre docentes de Matemática y de Educación Diferencial, como acción promotora de las adaptaciones curriculares. La metodología utilizada corresponde a la cualitativa con un enfoque fenomenológico, y la principal técnica de recolección de datos fue la entrevista semiestructurada, participantes de este estudio fueron 10 docentes de 2 instituciones educativas con programa de integración. Los principales hallazgos arrojan que profesorado y personal encargados del Programa de Integración Escolar cumplen con las normativas y requerimientos  del Decreto Nº 170 en relación con las adaptaciones curriculares, pero dicho cumplimiento está sujeto a la informalidad en la articulación y planificación debido a la falta de tiempo y recursos disponibles. De este modo, como conclusión se plantea que existe una necesidad constante de adaptaciones curriculares, pues son un mecanismo que permite lograr la individualización de la enseñanza, mejorando la calidad de vida y la educación especial en Chile.

  18. Entrepreneurship – cross-curricular and interdisciplinary topic in Elementary School

    OpenAIRE

    Lovrenčić, Sandra; Vrančić, Marijana

    2014-01-01

    National Curriculum specifies entrepreneurship as a cross-curricular and interdisciplinary topic aimed on interconnection of educational areas and subjects in a harmonious whole with the aim of linking the different competencies of students. Entrepreneurial learning specifics are clear links between the acquisition of knowledge, skills and attitudes, and their practical application. University College of Economics, Entrepreneurship and Management „Nikola Šubić Zrinski“ conducted project named...

  19. From F=ma to Flying Squirrels: Curricular Change in an Introductory Physics Course

    OpenAIRE

    O’Shea, Brian; Terry, Laura; Benenson, Walter

    2013-01-01

    We present outcomes from curricular changes made to an introductory calculus-based physics course whose audience is primarily life science majors, the majority of whom plan to pursue post-baccalaureate studies in medical and scientific fields. During the 2011-12 academic year, we implemented a "Physics of the life sciences" curriculum centered on a draft textbook that takes a novel approach to teaching physics to life science majors. In addition, substantial revisions were made to the homewor...

  20. Programa curricular de Ingeniería Eléctrica

    OpenAIRE

    Revista Ingeniería e Investigación

    2011-01-01

    La Ingeniería Eléctrica se ocupa del estudio de los elementos y sistemas necesarios para la generación, transporte, distribución, consumo de la energía eléctrica y uso de la electricidad en general. En este artículo se presentan aspectos relacionados con el programa curricular de la carrera.

  1. Anthelmintic, antimicrobial, antioxidant and cytotoxic activity of Caltha palustris var. alba Kashmir, India.

    Science.gov (United States)

    Mubashir, Sofi; Dar, Mohd Yousuf; Lone, Bashir A; Zargar, M Iqbal; Shah, Wajaht A

    2014-08-01

    The methanolic extract obtained from the root portion of Caltha palustris var. alba was evaluated for its anthelmintic efficacy against gastrointestinal nematodes of sheep under both in vitro and in vivo conditions using worm motility inhibition (WMI) assay and fecal egg count reduction (FECR) assay, respectively. The extract was subjected to antimicrobial activity using agar-well diffusion method against different bacterial strains. In addition the extract was evaluated for cytotoxic and antioxidant activity against cultured THP-1(Leukemia), A-549 (Lung), HCT-15 (Colon), Cervix (HeLa) and PC-3(Prostrate) cell lines by SRB and DPPH radical scavenging assays. The extract used resulted in mean %WMI of 94.44%, as observed when the worms were put in lukewarm buffer for 30 min after exposure to different treatments. The mean mortality index of the sample was 0.95. The lethal concentration (LC50) was 0.11 mg·mL(-1). Cell lines were exposed to concentration of 100 μg·mL(-1) of extract for 48 h, which reduced the viability of these cell lines. The same plant extract also showed 55.58% DPPH radical scavenging activity.

  2. Gota úrica visceral em coruja suindara (Tyto alba de vida livre

    Directory of Open Access Journals (Sweden)

    Indiara dos Santos Sales

    2015-02-01

    Full Text Available A gota úrica é uma doença metabólica caracterizada pela deposição de cristais de urato e ácido úrico em tecidos do corpo, que pode acometer répteis, mamíferos e aves. Neste trabalho, relata-se um caso de achados post mortem compatíveis com gota úrica visceral em um exemplar de coruja suindara (Tyto alba de vida livre. Macroscopicamente, o pericárdio apresentava-se completamente esbranquiçado, espesso e aderido ao miocárdio e o fígado e ambos os rins apresentavam áreas esbranquiçados sugerindo acúmulo de urato. A microscopia do tecido cardíaco e hepático revelou pericardite fibrinosa e perihepatite necrosante respectivamente. Congestão pulmonar e infiltrado inflamatório heterofílico multifocal no parênquima renal também foram visualizados. As alterações encontradas são compatíveis com as descritas na literatura para gota úrica visceral em aves, podendo até serem consideradas como lesões patognomônicas. Este é o primeiro relato de gota úrica visceral em um rapinante de vida livre no Brasil.

  3. Prevalence of interdigital psoriasis of the feet ("psoriasis alba") in mild, moderate, and severe psoriasis.

    Science.gov (United States)

    Leibovici, Vera; Lemster, Natalya; Ramot, Yuval; Siam, Rula; Siam, Ihab; Maly, Alex; Strauss-Liviatan, N; Hochberg, Malka

    2015-09-01

    Interdigital psoriasis of the feet ("psoriasis alba") is a rare form of inverse psoriasis. We conducted a cross-sectional study of the prevalence of interdigital psoriasis in mild, moderate, and severe psoriasis, compared to atopic dermatitis and normal controls. Data were collected during 2010-2013 from 232 psoriatic patients, 190 patients with atopic dermatitis, and 202 normal controls. The psoriatic and atopic dermatitis patients were from the dermatology department and outpatient clinic of the Hadassah-Hebrew University Medical Center in Jerusalem, Israel. The normal controls were healthy workers and volunteers from Hadassah Hospital who were not aware of any dermatological disease and had never consulted a general practitioner or dermatologist for skin problems of the feet. Our study revealed a prevalence of 2.6% of interdigital psoriasis of the feet in psoriatic patients, especially in men, and none in atopic dermatitis and normal controls. Three of the six affected patients with interdigital psoriasis of the feet complained of itching, both feet were involved in four patients, while two presented with additional palmoplantar psoriasis. The hematoxylin and eosin histopathological findings were in line with those found in inverse psoriasis. Dermatologists should be aware of this entity and treat it correctly. The diagnosis should be considered in psoriatic patients presenting with whitish plaque or patches in the toe-webs, in whom the fungal test is negative and are not responding to antimycotic treatment.

  4. Determintation of sulfor containing glucosides in Brassica nepus L. and Sinappis alba L. tissue cultures

    Directory of Open Access Journals (Sweden)

    Suleiman Afsharypuor

    1993-07-01

    Full Text Available In this study, hypocotyls of 5 day old seedlings of Brassica nepus L. and Sinappis alba L.. were explanted onto Murashige and Skoog's revised Tobaco Medium(lcontaining different concentrations of suitable plant growth regulators (a cytokinin and an auxin. In addition to the plant growth regulators, potassium sulfate(in a concentration of 3 m. eq./liter was added to some solid and liquid media in an attempt to raise available sulfate levels, to other medium, L - B- Phenylalanine was added (in a concentration of 30 m. eq./liter to act possibly as a precursor for the biosynthesis of sulfor containing glucoside (glucosinolate. Suspension cell cultures were initiated from callus and grown in the same medium without agar. Calli which were harvested at 20 weeks and cells at 6 weeks after subculture, were dried and examined by capillary GC for the presences of sulfor containing glucosides. The obtained results indicated the absence of such glucosides in the cells and calli.

  5. THE CHLOROSODIUM MINERAL WATERS IN ALBA COUNTY, LASTING TOURISTIC PROTECTION AND CAPITALIZATION

    Directory of Open Access Journals (Sweden)

    N. CIANGĂ

    2013-03-01

    Full Text Available This study represents a continuation of the research and assessment of the resources of chlorosodium mineral waters on the territory of the Transylvanian Depression, especially regarding the emersion of salty springs, which are still not to be found in the literature of specialty.Therefore, this time, Alba County will be analyzed, a county in which certain researches have been made previously. Field research could also be added, representing the only possibility to update the data regarding the existent salty springs.The first already known examples are the chlorosodium mineral waters billeted in lakes situated in Ocna Mureş. As locations with chlorosodium mineral waters which appear at the surface under the form of salty springs with a salinity exceeding 1 g/l, as compared to the specified ones, Ocnişoara, Cetatea de Baltă, Petrisat - Blaj, Crăciunelu de Jos, Secăşel, Dumitra and Draşov are to be mentioned.As far as the protection of these resources is concerned, the main debated issues are related to phenomena such as their clogging and sweetening, which determines many springs of chlorosodium mineral waters to become ephemeral.

  6. Antiosteoporotic Effect of Combined Extract of Morus alba and Polygonum odoratum

    Directory of Open Access Journals (Sweden)

    Sudarat Sungkamanee

    2014-01-01

    Full Text Available Due to the limitation of osteoporosis therapy, the alternative therapies from natural sources have been considered. In this study, we aimed to determine the antiosteoporotic effect of the combined extract of Morus alba and Polygonum odoratum leaves. Ovariectomized rats, weighing 200–220 g, were orally given the combined extract at doses of 5, 150, and 300 mg·kg−1 BW for 3 months. At the end of study, blood was collected to determine serum osteocalcin, calcium, and alkaline phosphatase level. In addition, tibia bone was isolated to determine bone oxidative stress markers, cortical bone thickness, and density of osteoblast. The combined extract decreased oxidative stress and osteoclast density but increased osteoblast density and cortical thickness. The elevation of serum calcium, alkaline phosphatase, and osteocalcin was also observed. These results suggested the antiosteoporotic effect of the combined extract via the increased growth formation together with the suppression of bone resorption. However, further studies concerning chronic toxicity and the underlying mechanism are required.

  7. Prosopis alba exudate gum as excipient for improving fish oil stability in alginate-chitosan beads.

    Science.gov (United States)

    Vasile, Franco Emanuel; Romero, Ana María; Judis, María Alicia; Mazzobre, María Florencia

    2016-01-01

    The aim of the present work was to employ an exudate gum obtained from a South American wild tree (Prosopis alba), as wall material component to enhance the oxidative stability of fish oil encapsulated in alginate-chitosan beads. For this purpose, beads were vacuum-dried and stored under controlled conditions. Oxidation products, fatty acid profiles and lipid health indices were measured during storage. Alginate-chitosan interactions and the effect of gum were manifested in the FT-IR spectra. The inclusion of the gum in the gelation media allowed decreasing the oxidative damage during storage in comparison to the free oil and alginate-chitosan beads. The gum also improved wall material properties, providing higher oil retention during the drying step and subsequent storage. Fatty acids quality and lipid health indices were widely preserved in beads containing the gum. Present results showed a positive influence of the gum on oil encapsulation and stability, being the main mechanism attributed to a physical barrier effect.

  8. Emplacement of lava flow fields: Application of terrestrial studies to Alba Patera, Mars

    International Nuclear Information System (INIS)

    Morphological data are at present the major source of information for extraterrestrial lavas. Effusion conditions must therefore be inferred from the final shapes of flow fields, generally using terrestrial lavas as analogues and so presupposing similar emplacement regimes on Earth and other planets. Studies of terrestrial lavas suggest that the overall development of flow fields is systematic and that a general, normalized relation can be established linking the final dimensions of a flow field (specifically, average thickness and the ratio of maximum width to maximum length) to underlying slope and eruption duration, independent of explicit knowledge of discharge rate, gravitational acceleration, lava density, and rheology. This relation is applied to lavas on the Martian volcano Alba Patera, on which two distinct planimetric types of lava flow fields are identified, and eruption durations, average discharge rates, and average velocities are obtained. Imposing the constraint of a terrestrial emplacement regime, the model yields internally consistent results for subliquidus lavas and suggests that, at least for basaltic-basaltic andesitic compositions, the essential conditions of eruption may have been similar to those currently observed on Earth

  9. Albas y alboradas en el cancionero tradicional mexicano: herencia y cambio

    Directory of Open Access Journals (Sweden)

    Masera, Mariana

    1999-12-01

    Full Text Available The roots of some erotic motives in Mexican traditional songs in Spanish could be traced to the Medieval Popular Hispanic songs, as has been said by scholars. But, until now, nobody has studied in depth the relationship and diversity between the Mexican cancionero and old Spanish songs. In this article I shall analize the preservation of the Dawn motif, and all those associated with it, in Mexican Contemporary Songs and variation.Los antecedentes de algunos motivos eróticos de la poesía tradicional mexicana contemporánea en español se pueden rastrear hasta las canciones populares hispánicas de la Edad Media. Sin embargo, aún hoy no se han estudiado en profundidad las relaciones y desencuentros entre la canción popular mexicana y la antigua canción peninsular; por ello, este trabajo se propone como un primer análisis. El estudio resalta la originalidad de las coplas mexicanas a través de un estudio comparativo del motivo del alba.

  10. Genetic characterization of fast-growing rhizobia able to nodulate Prosopis alba in North Spain.

    Science.gov (United States)

    Iglesias, Olga; Rivas, Raúl; García-Fraile, Paula; Abril, Adriana; Mateos, Pedro F; Martinez-Molina, Eustoquio; Velázquez, Encarna

    2007-12-01

    Prosopis is a Mimosaceae legume tree indigenous to South America and not naturalized in Europe. In this work 18 rhizobial strains nodulating Prosopis alba roots were isolated from a soil in North Spain that belong to eight different randomly amplified polymorphic DNA groups phylogenetically related to Sinorhizobium medicae, Sinorhizobium meliloti and Rhizobium giardinii according to their intergenic spacer and 16S rRNA gene sequences. The nodC genes of isolates close to S. medicae and S. meliloti were identical to those of S. medicae USDA 1,037(T) and S. meliloti LMG 6,133(T) and accordingly all these strains were able to nodulate both alfalfa and Prosopis. These nodC genes were phylogenetically divergent from those of the isolates close to R. giardinii that were identical to that of R. giardinii H152(T) and therefore all these strains formed nodules in common beans and Prosopis. The nodC genes of the strains isolated in Spain were phylogenetically divergent from that carried by Mesorhizobium chacoense Pr-5(T) and Sinorhizobium arboris LMG 1,4919(T) nodulating Prosopis in America and Africa, respectively. Therefore, Prosopis is a promiscuous host which can establish symbiosis with strains carrying very divergent nodC genes and this promiscuity may be an important advantage for this legume tree to be used in reforestation.

  11. NOTES ON A STATUE FROM THE COLLECTIONS OF THE NATIONAL MUSEUM OF UNION FROM ALBA IULIA

    Directory of Open Access Journals (Sweden)

    Andreea Almăjanu

    2016-04-01

    Full Text Available This study proposes to re-evaluate a marble statue from the old collections of the National Museum of Union Alba Iulia. It was discovered by A. Cserni during excavations carried out at the Palace of the Governors of Roman Dacia, in 1898. It has been repeatedly published by Á. Hekler and Al. Diaconescu. While the latter author established dating and iconographic prototype of the statue, we believe that further details as discovery place and context, depiction, iconographic attribution and role of this work of art can be offered. Presence of a follower at the feet of the divinity, more precisely the right foot of a character – child, conveys us the idea of depiction of Eros, god of love. Usually, this is depicted beside nude or seminude Venus, and sculptural representation from Apulum is somehow different from iconographic point of view. As we see it, taking into consideration the discovery place, artefacts resulted from the same excavation, artistic eclecticism, religious iconographic influences and official politics of the Roman state, we believe we are dealing with rather an unusual statue of Venera as manner of representation or an image of an empress, wife of a governor or member of a family of municipal authorities from Apulum.

  12. Misunderstanding opportunities: (post-resettlement issues in the Recea neighbourhood of Alba Iulia

    Directory of Open Access Journals (Sweden)

    Cătălin Buzoianu

    2013-06-01

    Full Text Available Although its gold mining project has been locked in public debates and permit reviews for over a decade, a Canadian-Romanian company privately negotiated with the inhabitants of Roşia Montană commune, Romania, to buy their households and lands, and resettle them in a specially built neighbourhood in the city of Alba Iulia. This paper suggests that while the paternalistic character of resettlement has allowed resettlers to partially keep their group identity, and partially to reconstruct it in relation with the host community, it was also based on a misunderstanding of the relationship between resettlers and the organiser of resettlement. Drawing on field research, the resettlement was studied as a “continuous process” spanning three years (2010-12, during which this paper identifies (1 the changes in lifestyle, (2 the mechanisms of community regeneration, and (3 post-resettlement initiatives of resettlers. Although greater living costs (utility bills, real estate taxes, transportation and unemployment seem to be balanced by better living conditions and greater educational opportunities for their children, the ambivalent paternalistic aspect of the resettlement has negatively influenced the development of the new community. While at first community issues were unsuccessfully addressed to the company, recent public improvement initiatives by resettlers have caused tensions between the two sides.

  13. Degradation of exogenous caffeine by Populus alba and its effects on endogenous caffeine metabolism.

    Science.gov (United States)

    Pierattini, Erika C; Francini, Alessandra; Raffaelli, Andrea; Sebastiani, Luca

    2016-04-01

    This is the first study reporting the presence of endogenous caffeine, theobromine, and theophylline in all organs of poplar plants. Liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS) was used in order to evaluate the uptake, translocation, and metabolism of caffeine-(trimethyl-(13)C) in Populus alba L. Villafranca clone grown in hydroponic conditions. We investigated the remediation of caffeine since it is one of the most widely consumed drugs and it is frequently detected in wastewater treatment plant effluents, surface water, and groundwater worldwide. Our results demonstrated that poplar can absorb and degrade exogenous caffeine without negative effects on plant health. Data showed that concentrations of all endogenous compounds varied depending on caffeine-(trimethyl-(13)C) treatments. In particular, in control conditions, endogenous caffeine, theobromine, and theophylline were mainly distributed in roots. On the other hand, once caffeine-(trimethyl-(13)C) was provided, this compound and its dimethy-(13)C metabolites are mainly localized at leaf level. In conclusion, our results support the possible use of Villafranca clone in association with other water treatment systems in order to complete the process of caffeine remediation. PMID:26681326

  14. MECHANICAL PROPERTIES OF POPLAR WOOD (POPULUS ALBA DRIED BY THREE KILN DRYING SCHEDULES

    Directory of Open Access Journals (Sweden)

    Mahdi Shahverdi,

    2012-01-01

    Full Text Available The influence of three drying schedules on the selected mechanical properties of poplar wood (Populus alba L. was evaluated in terms of suitability for structural applications. For this purpose, 70 mm-thick poplar lumber was conventionally dried by three different moisture content based schedules of T5-D2, T5-D4, and T5-D6. In these schedules, the wet bulb depression was changed as a means of increasing of the drying intensity. After drying, the mechanical properties of the lumber, including bending properties (MOE and MOR, toughness, shear strength parallel to grain, and tensile strength perpendicular to grain, were measured. Results revealed that the severe drying schedule (T5-D6 caused higher reductions in the mechanical properties of the dried boards, particularly the MOE and MOR. Furthermore, toughness and tensile strength perpendicular to grain were not affected by the increasing of the wet bulb depression. The influence of all the three adopted schedules on the mechanical properties was evaluated using the drying rate, final moisture content gradient, and qualitative characteristics of the dried boards.

  15. Quali-quantitative analyses of Flavonoids of Morus nigra L. and Morus alba L. (Moraceae) fruits.

    Science.gov (United States)

    Pawlowska, Agata Maria; Oleszek, Wieslaw; Braca, Alessandra

    2008-05-14

    Morus nigra L., belonging to the Moraceae family, is a decidious tree widely cultivated in Europe and West Asia. It has a long history of medicinal use in Chinese medicine, as a remedy for many kinds of diseases. The aim of the present study was to evaluate the profile of the phenolic constituents of M. nigra fruits and to compare their content with the fruits of another species of Morus, Morus alba, which is also very well known in folklore medicine. The fruits of black and white mulberries have been studied, and five compounds from the methanol extract have been identified by means of HPLC/PDA/ESI-MS. Four compounds (quercetin 3- O-glucoside, quercetin 3- O-rutinoside, kaempferol 3- O-rutinoside, and 5- O-caffeoylquinic acid) have been isolated by use of Sephadex LH-20 column chromatography and HPLC and characterized by means of NMR and ESI-MS. Furthermore, HPLC/PDA/ESI-MS analysis of the red pigment of M. nigra fruits revealed the presence of four anthocyanins recognized as cyanidin 3- O-glucoside, cyanidin 3- O-rutinoside, pelargonidin 3- O-glucoside, and pelargonidin 3- O-rutinoside. All of the compounds were quantified.

  16. Evidences of local adaptation in quantitative traits in Prosopis alba (Leguminosae).

    Science.gov (United States)

    Bessega, C; Pometti, C; Ewens, M; Saidman, B O; Vilardi, J C

    2015-02-01

    Signals of selection on quantitative traits can be detected by the comparison between the genetic differentiation of molecular (neutral) markers and quantitative traits, by multivariate extensions of the same model and by the observation of the additive covariance among relatives. We studied, by three different tests, signals of occurrence of selection in Prosopis alba populations over 15 quantitative traits: three economically important life history traits: height, basal diameter and biomass, 11 leaf morphology traits that may be related with heat-tolerance and physiological responses and spine length that is very important from silvicultural purposes. We analyzed 172 G1-generation trees growing in a common garden belonging to 32 open pollinated families from eight sampling sites in Argentina. The multivariate phenotypes differ significantly among origins, and the highest differentiation corresponded to foliar traits. Molecular genetic markers (SSR) exhibited significant differentiation and allowed us to provide convincing evidence that natural selection is responsible for the patterns of morphological differentiation. The heterogeneous selection over phenotypic traits observed suggested different optima in each population and has important implications for gene resource management. The results suggest that the adaptive significance of traits should be considered together with population provenance in breeding program as a crucial point prior to any selecting program, especially in Prosopis where the first steps are under development.

  17. Leadership lessons from curricular change at the University of California, San Francisco, School of Medicine.

    Science.gov (United States)

    Loeser, Helen; O'Sullivan, Patricia; Irby, David M

    2007-04-01

    After successive Liaison Committee on Medical Education accreditation reports that criticized the University of California, San Francisco, School of Medicine for lack of instructional innovation and curriculum oversight, the dean issued a mandate for curriculum reform in 1997. Could a medical school that prided itself on innovation in research and health care do the same in education? The authors describe their five-phase curriculum change process and correlate this to an eight-step leadership model. The first phase of curricular change is to establish a compelling need for change; it requires leaders to create a sense of urgency and build a guiding coalition to achieve action. The second phase of curriculum reform is to envision a bold new curriculum; leaders must develop such a vision and communicate it broadly. The third phase is to design curriculum and obtain the necessary approvals; this requires leaders to empower broad-based action and generate short-term wins. In the fourth phase, specific courses are developed for the new curriculum, and leaders continue to empower broad-based action, generate short-term wins, consolidate gains, and produce more change. During the fifth phase of implementation and evaluation, leaders need to further consolidate gains, produce more change, and anchor new approaches in the institution. Arising from this experience and the correlation of curricular change phases with leadership steps, the authors identify 27 specific leadership strategies they employed in their curricular reform process. PMID:17414186

  18. Curricular guidelines and citizenship attitudes in Latin American students: a comparative analysis

    Directory of Open Access Journals (Sweden)

    Martín Bascopé, Chile

    2015-07-01

    Full Text Available (analítico: Los currículos son progresivamente relevantes para educar futuros ciudadanos activos. En este contexto, se vuelve fundamental explorar la relación entre las directrices curriculares y cómo la educación ciudadana es efectivamente alcanzada por los estudiantes en países Latinoamericanos. Por ello este artículo tiene por objetivo evaluar comparativamente la visión institucional expresada en cada currículum y las perspectivas de los estudiantes sobre asuntos ciudadanos. El análisis factorial exploratorio y el análisis estadístico descriptivo curricular se basan en dos fuentes valiosas y complementarias, respectivamente: El Estudio Internacional de Educación Cívica y Ciudadana (ICCS y el Sistema Regional de Competencias de Ciudadanía (Sredecc. Luego de una comparación sistemática de ambas fuentes este estudio revela que varios aspectos curriculares son coherentes con las actitudes y creencias de los estudiantes, y sugiere pautas para mejorar y expandir la educación ciudadana en América Latina, considerando la importancia de esta para la formación de una ciudadanía activa.

  19. The curricular training and the didactics in training of teachers: challenges and possibilities

    Directory of Open Access Journals (Sweden)

    Cyntia Graziella Guizelim Simões Girotto

    2013-01-01

    Full Text Available In this paper we addressed aspects of the disciplines “Curricular Training” and “Didactics” in the Pedagogy Course in training of teachers. The main objective is to emphasize upon submission of the work that we do in our teaching practice in the mentioned disciplines, the importance of linking the theory and the practice in training of teachers so that the teaching in the university it is not decontextualized but enriched with the issues of everyday school life. In this sense, we address, initially, the aspects of the Curricular training as a mediator link of the learning, of the articulation of the curriculum and of the practices and, in this view, as a productive conduit between the university and the basic education, stressing the need for the reception of the contribution that each institutions within its specificity, must provide in the training courses. In sequence, we present aspects of the structure of the work we do with our students in Early Childhood Education Curricular Training. Finally, are detailed the aspects of a Didactics for the teachers of early childhood education and for the early years of Fundamental Education, focusing on narratives of in-service teachers on their experiences teaching in search of new systematization of pedagogical practice and on by own teachers.

  20. Medical student mental health 3.0: improving student wellness through curricular changes.

    Science.gov (United States)

    Slavin, Stuart J; Schindler, Debra L; Chibnall, John T

    2014-04-01

    Medical education can have significant negative effects on the well-being of medical students. To date, efforts to improve student mental health have focused largely on improving access to mental health providers, reducing the stigma and other barriers to mental health treatment, and implementing ancillary wellness programs. Still, new and innovative models that build on these efforts by directly addressing the root causes of stress that lie within the curriculum itself are needed to properly promote student wellness. In this article, the authors present a new paradigm for improving medical student mental health, by describing an integrated, multifaceted, preclinical curricular change program implemented through the Office of Curricular Affairs at the Saint Louis University School of Medicine starting in the 2009-2010 academic year. The authors found that significant but efficient changes to course content, contact hours, scheduling, grading, electives, learning communities, and required resilience/mindfulness experiences were associated with significantly lower levels of depression symptoms, anxiety symptoms, and stress, and significantly higher levels of community cohesion, in medical students who participated in the expanded wellness program compared with those who preceded its implementation. The authors discuss the utility and relevance of such curricular changes as an overlooked component of change models for improving medical student mental health.

  1. Rapid discrimination of geographical origin and evaluation of antioxidant activity of Salvia miltiorrhiza var. alba by Fourier transform near infrared spectroscopy

    Science.gov (United States)

    Duan, Xiaoju; Zhang, Danlu; Nie, Lei; Zang, Hengchang

    2014-03-01

    Radix Salvia miltiorrhiza Bge. var. alba C.Y. Wu and H.W. Li and Radix S. miltrorrhiza belong to the same genus. S. miltiorrhiza var. alba has a unique effectiveness for thromboangiitis besides therapeutical efficay of S. miltrorrhiza. It exhibits antioxidant activity (AA), while its quality and efficacy also vary with geographic locations. Therefore, a rapid and nondestructive method based on Fourier transform near infrared spectroscopy (FT-NIRS) was developed for discrimination of geographical origin and evaluation of AA of S. miltiorrhiza var. alba. The discrimination of geographical origin was achieved by using discriminant analysis and the accuracy was 100%. Partial least squares (PLS) regression was employed to establish the model for evaluation of AA by NIRS. The spectral regions were selected by interval PLS (i-PLS) method. Different pre-treated methods were compared for the spectral pre-processing. The final optimal results of PLS model showed that correlation coefficients in the calibration set (Rc) and the prediction set (Rp), root mean square error of prediction (RMSEP) and residual prediction deviation (RPD) were 0.974, 0.950, 0.163 mg mL-1 and 2.66, respectively. The results demonstrated that NIRs combined with chemometric methods could be a rapid and nondestructive tool to discriminate geographical origin and evaluate AA of S. miltiorrhiza var. alba. The developed NIRS method might have a potential application to high-throughput screening of a great number of raw S. miltiorrhiza var. alba samples for AA.

  2. Analysis of F1 hybrid and BC1 monosomic alien addition line plants from Brassica oleracea × Sinapis alba by GISH

    Institute of Scientific and Technical Information of China (English)

    WEI Wenhui; ZHANG Sufeng; LI Jun; WANG Lijun; CHEN Bo; FANG Xiaoping; WANG Zhuan; LUO Lixia

    2006-01-01

    Sterile and semi-fertile F1 plants were obtained by intergeneric sexual hybridization between paternal Brassica oleracea var. alboglabra (genome CC, 2n=18) and maternal Sinapis alba (genome SS, 2n=24), BC1 plants were obtained by backcrossing between paternal B. oleracea and maternal semi-fertile F1 plants. Genomic in situ hybridization (GISH) combined with dual-colour fluorescence in situ hybridization (dcFISH) showed that sterile F1 plants contained 21 chromosomes consisting of one B. oleracea chromosome set and one S.alba chromosome set, belonging to expected hybrids,and semi-fertile F1 plants contained 30 chromosomes consisting of two B. oleracea chromosome sets and one S. alba chromosome set. It is obvious that the semi-fertile F1 plants belong to unexpected hybrids.1 -3 trivalents were detected at meiotic metaphase I of semi-fertile F1 pollen mother cells (PMCs). Different separation ratios of S chromosomes were detected at anaphase I. A monosomic alien addition line(MAAL) was identified by GISH-dcFISH from BC1plants; it contained 19 chromosomes consisting of 18 C chromosomes and 1 S chromosome. At meiotic metaphase I, 9 divalents from B. oleracea and one univalent from S. alba could be detected. Sometimes,one putative C-S trivalent could also be detected.The achievement of B. oleracea-S, alba monosomic alien addition lines lays a foundation for gene introgression, location and cloning.

  3. Política curricular no Estado de São Paulo nos anos 1980 e 1990 Curricular policy in the State of São Paulo in the eighties and nineties

    Directory of Open Access Journals (Sweden)

    Rosa Fátima de Souza

    2006-04-01

    Full Text Available Este texto apresenta um estudo sobre a política curricular implementada no Estado de São Paulo nas décadas de 1980 e 1990 para as primeiras séries do ensino fundamental. Examina o currículo prescrito cotejando-o com os contextos práticos de desenvolvimento do currículo. A pesquisa revela que a política curricular desse período articulou-se fortemente com a produção acadêmica em educação. Ressalta ainda a continuidade na política de produção de materiais de orientação curricular nos últimos 20 anos, buscando difundir e tornar hegemônico um pensamento pedagógico inovador. Também verifica que esses materiais circularam de diferentes formas na rede de ensino e foram apropriados de maneira seletiva pelos professores que adotaram, sobretudo, as indicações práticas.Study on the curricular policy for the first grades of elementary school implemented in the State of São Paulo in the eighties and nineties. It examines the prescribed curriculum by comparing it to the practical contexts of curricular development. The research reveals that the curricular policy of that period was very much connected with academic production on education. It further emphasizes continuity in the policy of producting curricular orientation materials in the last 20 years, in order to advertise and make hegemonic an innovative pedagogical thought. It was also verified that these materials circulated in many different ways within the education system and were selectively appropriated by the teachers who particularly adopted the practical indications.

  4. Antioxidant Capacity and HPLC-DAD-MS Profiling of Chilean Peumo (Cryptocarya alba Fruits and Comparison with German Peumo (Crataegus monogyna from Southern Chile

    Directory of Open Access Journals (Sweden)

    Mario J. Simirgiotis

    2013-02-01

    Full Text Available Liquid chromatography (LC coupled with UV detection and electrospray ionization (ESI tandem mass spectrometry (MS/MS was used for the generation of chemical fingerprints and the identification of phenolic compounds in peumo fruits and aerial parts from southern Chile. Thirty three compounds (19 of these detected in C. alba and 23 in C. monogyna were identified, mainly flavonoid glycosides, phenolic acids, anthocyanins and flavonoid aglycons. Total phenolic content and total flavonoid content was measured for both species, and were higher in the extracts from C. monogyna fruits and aerial parts than extracts from C. alba. The fruits of Cryptocarya alba (Chilean peumo presented high antioxidant capacity (9.12 ± 0.01 mg/mL in the DPPH assay, but was three times lower to that of Crataegus monogyna (German peumo (3.61 ± 0.01 mg/mL in the DPPH assay.

  5. ¿Hacia una Nueva Arquitectura Financiera Regional? Problemas y perspectivas de la cooperación monetaria en el ALBA-TCP

    Directory of Open Access Journals (Sweden)

    Benzi, D.

    2016-05-01

    Full Text Available This paper addresses the experiences of the monetary and financial cooperation carried out within the framework of ALBA-TCP. The first part describes the context of global crisis and emerging multipolarity in which the debate on the reform of the International Financial Architecture (IFA and regional monetary initiatives are inserted. The second part revises the Latin American initiative of a New Regional Financial Architecture. Later, we analyze the origins, processes and effects of mechanisms implemented within the ALBA-TCP, such as the ALBA Bank and the SUCRE. Finally, the essay concludes by presenting both potential and limitations of these experiences within a regional and global scenario marked by a high degree of uncertainty that, paradoxically so far, seems to delay and inhibit rather than consolidate the strengthening of a New Regional Financial Architecture.

  6. A GLIMPSE ON THE DIET OF TYTO ALBA (SCOPOLI 1769 AND ASIO OTUS (LINNAEUS, 1758 FROM THE WETLANDS OF WESTERN ROMANIA

    Directory of Open Access Journals (Sweden)

    IOAN DUMA

    2009-01-01

    Full Text Available The diet of Tyto alba (Scopoli 1769 and Asio otus (Linnaeus, 1758 was analyzed by studying pellets collected from Dumbrava and Lugoj localities (Timis County, Romania. We have found that in the winter of 2007-2008 shrews made up 38.95% from the diet of Tyto alba that were hunting around Dumbrava locality. Although rodents were still the main prey items found in the pellets of Tyto alba the ratio between them and shrews was of 1.56:1. Among the Soricidae, Crocidura suaveolens represented a proportion of 24.15%, Neomys anomalus 13.8% and Crocidura leucodon only 1%. The summer diet varied considerably but still contained 15.45% shrews. In contrast the pellets of Asio otus contained a smaller proportion of shrews both in winter and in summer month.

  7. Participation of the GABAergic system in the anesthetic effect of Lippia alba (Mill.) N.E. Brown essential oil

    International Nuclear Information System (INIS)

    The objective of this study was to identify the possible involvement of the GABAergic system in the anesthetic effect of Lippia alba essential oil (EO). We propose a new animal model using silver catfish (Rhamdia quelen) exposed to an anesthetic bath to study the mechanism of action of EO. To observe the induction and potentiation of the anesthetic effect of EO, juvenile silver catfish (9.30 ± 1.85 g; 10.15 ± 0.95 cm; N = 6) were exposed to various concentrations of L. alba EO in the presence or absence of diazepam [an agonist of high-affinity binding sites for benzodiazepinic (BDZ) sites coupled to the GABAA receptor complex]. In another experiment, fish (N = 6) were initially anesthetized with the EO and then transferred to an anesthetic-free aquarium containing flumazenil (a selective antagonist of binding sites for BDZ coupled to the GABAA receptor complex) or water to assess recovery time from the anesthesia. In this case, flumazenil was used to observe the involvement of the GABA-BDZ receptor in the EO mechanism of action. The results showed that diazepam potentiates the anesthetic effect of EO at all concentrations tested. Fish exposed to diazepam and EO showed faster recovery from anesthesia when flumazenil was added to the recovery bath (12.0 ± 0.3 and 7.2 ± 0.7, respectively) than those exposed to water (9.2 ± 0.2 and 3.5 ± 0.3, respectively). In conclusion, the results demonstrated the involvement of the GABAergic system in the anesthetic effect of L. alba EO on silver catfish

  8. Participation of the GABAergic system in the anesthetic effect of Lippia alba (Mill.) N.E. Brown essential oil

    Energy Technology Data Exchange (ETDEWEB)

    Heldwein, C.G.; Silva, L.L. [Departamento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria, RS (Brazil); Reckziegel, P. [Departamento de Fisiologia e Farmacologia, Universidade Federal de Santa Maria, Santa Maria, RS (Brazil); Barros, F.M.C. [Departamento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria, RS (Brazil); Bürger, M.E.; Baldisserotto, B. [Departamento de Fisiologia e Farmacologia, Universidade Federal de Santa Maria, Santa Maria, RS (Brazil); Mallmann, C.A. [Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Santa Maria, RS (Brazil); Schmidt, D.; Caron, B.O. [Departamento de Ciências Agronômicas e Ambientais, Universidade Federal de Santa Maria, Campus de Frederico Westphalen, Frederico Westphalen, RS (Brazil); Heinzmann, B.M. [Departamento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria, RS (Brazil)

    2012-04-05

    The objective of this study was to identify the possible involvement of the GABAergic system in the anesthetic effect of Lippia alba essential oil (EO). We propose a new animal model using silver catfish (Rhamdia quelen) exposed to an anesthetic bath to study the mechanism of action of EO. To observe the induction and potentiation of the anesthetic effect of EO, juvenile silver catfish (9.30 ± 1.85 g; 10.15 ± 0.95 cm; N = 6) were exposed to various concentrations of L. alba EO in the presence or absence of diazepam [an agonist of high-affinity binding sites for benzodiazepinic (BDZ) sites coupled to the GABA{sub A} receptor complex]. In another experiment, fish (N = 6) were initially anesthetized with the EO and then transferred to an anesthetic-free aquarium containing flumazenil (a selective antagonist of binding sites for BDZ coupled to the GABA{sub A} receptor complex) or water to assess recovery time from the anesthesia. In this case, flumazenil was used to observe the involvement of the GABA-BDZ receptor in the EO mechanism of action. The results showed that diazepam potentiates the anesthetic effect of EO at all concentrations tested. Fish exposed to diazepam and EO showed faster recovery from anesthesia when flumazenil was added to the recovery bath (12.0 ± 0.3 and 7.2 ± 0.7, respectively) than those exposed to water (9.2 ± 0.2 and 3.5 ± 0.3, respectively). In conclusion, the results demonstrated the involvement of the GABAergic system in the anesthetic effect of L. alba EO on silver catfish.

  9. Protective Effects of Morus alba Leaves Extract on Ocular Functions of Pups from Diabetic and Hypercholesterolemic Mother Rats

    Directory of Open Access Journals (Sweden)

    H.I.H. El-Sayyad, M.A. El-Sherbiny, M.A. Sobh, A.M. Abou-El-Naga, M.A.N. Ibrahim, S.A. Mousa

    2011-01-01

    Full Text Available Phytotherapy is frequently considered to be less toxic and free from side effects than synthetic drugs. Hence, the present study was designed to investigate the protective use of crude water extract of Morus alba leaves on ocular functions including cataractogenesis, biochemical diabetic and hypercholesterolemic markers, retinal neurotransmitters and retinopathy of rat pups maternally subjected to either diabetes and/or hypercholesterolemia. Application of crude water extract of Morus alba resulted in amelioration of the alterations of maternal serum glucose, LDL, HDL, total cholesterol and creatine phosphokinase activity as well as retinal neurotransmitters including acetylcholine (ACE, adrenaline (AD, nor-adrenaline (NAD, serotonin (5-HT, histamine (HS, dopamine (DA and gamma amino butyric acid (GABA. The retina of pups of either diabetic and/or hypercholesterolemia mothers exhibited massive alterations of retinal neurotransmitters. The alterations of retinal neurotransmitters were correlated with the observed pathological alterations of retinal pigmented epithelium, photoreceptor inner segment and ganglion cells and increased incidence of DNA fragmentation and apoptosis cell death. However, protection with Morus alba extract led to amelioration of the pathological alterations of retinal neurons and estimated neurotransmitters. Furthermore, a striking incidence of cataract was detected in pups of either diabetic and/or hypercholesterolemic mothers. Highest cataractogenesis was observed in pups of combined -treated groups. Our data indicate that experimental maternal diabetes alone or in combination with hypercholesterolemia led to alteration in the ocular structures of their pups, with an increasing incidence of cataract and retinopathy, and the effects of the extract might be attributed to the hypoglycaemic, antihypercholesterolemic and anti-oxidative potential of flavonoids, the major components of the plant extract.

  10. Inhibition of cytotoxicity of Shiga toxin of Escherichia coli O157:H7 on vero cells by Prosopis alba Griseb (Fabaceae) and Ziziphus mistol Griseb (Rhamnaceae) extracts.

    Science.gov (United States)

    Pellarín, M G; Albrecht, C; Rojas, M J; Aguilar, J J; Konigheim, B S; Paraje, M G; Albesa, I; Eraso, A J

    2013-10-01

    The capacity of Prosopis alba Griseb. and Ziziphus mistol Griseb. fruit extracts to inhibit the toxic action of Shiga toxin (Stx) was investigated. Purification of Stx from Escherichia coli O157:H7 was performed by saline precipitation and affinity chromatography using a column with globotriaosylceramide, while the fruits were subjected to ethanolic or aqueous extractions. The protective action of both fruits was determined by pre-, co-, and postincubation of one 50% cytotoxic dose per ml of Stx with different concentrations of ethanolic and aqueous extracts in confluent monolayers of Vero cells for 72 h at 37°C (5% CO2). The inhibition of the cytotoxic effect of Stx by fruit extracts was determined by the neutral red vital staining technique. The extraction of the polyphenols and flavonoids was effective, and more polyphenols per milligram of dissolved solids were obtained from P. alba than from Z. mistol. However, there were more flavonoids in Z. mistol than in P. alba. Components of both fruits increased the viability of cells treated with Stx when the extracts were preincubated with Stx for 1 h before being applied to the cell cultures, with the ethanolic extract of P. alba showing 95% cell viability at a concentration of 2.45 mg/ml. The extracts were less effective in protecting cells when Stx, extracts, and cells were coincubated together without a previous incubation of Stx; only the concentrations of 19.46 mg/ml for the P. alba aqueous extract and 3.75 mg/ml for the Z. mistol ethanolic extract resulted in the inhibition of cytotoxicity, with 52 and 56% cell viability occurring, respectively. Investigation into this difference in the protection of cells indicated that the protein molecule of Stx suffered degradation to advanced oxidative protein products during preincubation with extracts, principally with P. alba, which exhibited a greater amount of nonflavonoid polyphenols than Z. mistol. The prooxidant action on Stx favored the cells and enhanced the

  11. Anesthetic induction and recovery of Hippocampus reidi exposed to the essential oil of Lippia alba

    Directory of Open Access Journals (Sweden)

    Mauro Alves da Cunha

    2011-01-01

    Full Text Available The aim of this study was to identify the times of anesthetic induction and recovery in slender seahorses (Hippocampus reidi that were exposed to the essential oil of Lippia alba (EO, as well as the efficacy of EO as a stress-reducing agent in the transport of this species. Slender seahorses were placed in 1-L aquaria containing different concentrations of EO (0, 10, 20, 50, 150, 300 and 450 µL L-1, and after induction, fish were transferred to aquaria that were free of anesthetic to evaluate their recovery time. In an additional experiment, slender seahorses were transported in plastic bags with 15 µL L-1 of EO for 4 or 24 h. The increased concentration of EO proportionally decreased the time required for the induction of anesthesia. EO treatment (15 µL L-1 inhibited the increase in blood glucose levels that was provoked by transportation for 4 or 24 h. Transportation for 24 h also decreased the number of lymphocytes and increased the neutrophil count, and these effects were avoided with the addition of EO to the water. These results demonstrate that EO was effective as an anesthetic at concentrations of 10-20 µL L-1 for slight sedation and transport and at 150 µL L-1 for deep anesthesia in the slender seahorse.O objetivo deste estudo foi identificar os tempos da indução e recuperação anestésica em cavalos marinhos (Hippocampus reidi expostos ao óleo essencial de Lippia alba (OE, assim como a eficácia do OE como um agente redutor de estresse no transporte desta espécie. Os cavalos marinhos foram colocados em aquários contendo 1 litro de água e diferentes concentrações de OE (0, 10, 20, 50, 150, 300 e 450 µL L-1, após a indução, os peixes foram transferidos à aquários livre de anestésico para avaliar o tempo de recuperação. Em um outro experimento os cavalos marinhos foram transportados em sacos plásticos contendo 15 µL L-1 do OE por 4 ou 24h. A concentração crescente do OE diminuiu proporcionalmente o tempo exigido

  12. Plant regeneration from single-nodal-stem explants of legume tree Prosopis alba Griseb.

    Science.gov (United States)

    Castillo de Meier, G; Bovo, O A

    2000-08-01

    Seeds of Prosopis alba were scarified with abrasive paper and placed to germinate on MS (Murashige and Skoog 1962) nutrient medium. After 7 days of culture, the basal part of cotyledons was removed and pieces of 4 mm" from distal parts were cultured on Murashige and Skoog (1962) mineral salts and vitamins (MS) (3% sucrose) supplemented with growth regulators. Callus proliferation took place in the majority of the media tested. A low percentage of calluses with green buds that developed on MS basal medium containing 0.1 mg.L-1 2,4-D alone or supplemented with BAP at 0.1 mg.L-1 was observed. Neither cotyledonary segments in any medium assayed regenerated the whole plants. Bud elongation (near 70%) was achieved when single-nodal-stem segments cut from 20 days old seedlings were cultured on MS salts supplemented with 3 mg.L-1 NAA or 3 mg.L-1 IBA combined with 0.05 mg.L-1 KIN after 60 days in culture. Multiple shoots per bud were also observed. Single-nodal-stem segments from five-year-old plants were also cultured on the same media used for seedling explants. Maximal frequency of explants with bud elongation (near 70%) was found on MS with 0.1 mg.L-1 NAA plus 1 mg.L-1 BAP after 60 days of culture. Single-nodal-stem explants cut from adult trees (more than 20 years) were also employed, but the number of bud elongation was lesser. For rooting, the elongated shoots were transferred to a semisolid or liquid MS culture medium employing a paper bridge, supplemented with 0.5 mg.L-1 IBA or 0.1 mg.L-1 NAA.

  13. Biphasic effects of Morus alba leaves green tea extract on mice in chronic forced swimming model.

    Science.gov (United States)

    Sattayasai, Jintana; Tiamkao, Siriporn; Puapairoj, Prapawadee

    2008-04-01

    In this study, the effects of an aqueous extract of Morus alba leaves green tea (ME) on mouse behaviors (depression, anxiety, climbing activity and thermal response), muscle coordination and muscle strength were studied. Male IRC mice received a single intraperitoneal injection of either the ME, desipramine or diazepam. Thirty minutes after injection, the mice were tested in all experimental models. A significant antidepressant-like effect could be detected in the animals receiving either 100 or 200 mg/kg ME. The effect of 200 mg/kg ME in decreasing the immobility time was comparable to 10 mg/kg desipramine. With higher dose (1000 mg/kg), a significant increase in immobility time could be observed. In the elevated plus maze, no increase in time in the open arm could be observed in mice treated with ME at either 100 or 200 mg/kg. However, high doses of ME (500 or 1000 mg/kg) decreased both time in the open arm and the number of entries in the maze. No change in thermal response could be seen in mice treated with ME at doses up to 500 mg/kg, however, at 1000 mg/kg, the response time to heat was increased significantly. The ME at either 500 or 1000 mg/kg also decreased muscle coordination, strength and climbing activity significantly when compared with the control. This study suggests that ME possesses an antidepressant- without an anxiolytic-like effect, however, at high doses, the extract might show the sedative effect and alter other functions such as muscle strength, animal activity in the maze and pain response.

  14. N-containing sugars from Morus alba and their glycosidase inhibitory activities.

    Science.gov (United States)

    Asano, N; Oseki, K; Tomioka, E; Kizu, H; Matsui, K

    1994-06-17

    The reexamination of N-containing sugars from the roots of Morus alba by improved purification procedures led to the isolation of eighteen N-containing sugars, including seven that were isolated from the leaves of Morus bombycis. These N-containing sugars are 1-deoxynojirimycin (1), N-methyl-1-deoxynojirimycin (2), fagomine (3), 3-epi-fagomine (4), 1,4-dideoxy-1,4-imino-D-arabinitol (5), 1,4-dideoxy-1,4-imino-D-ribitol (6), calystegin B2 (1 alpha,2 beta,3 alpha,4 beta-tetrahydroxy-nor-tropane, 7), calystegin C1 (1 alpha,2 beta,3 alpha,4 beta,6 alpha-pentahydroxy-nor-tropane, 8), 1,4-dideoxy-1,4-imino-(2-O-beta-D-glucopyranosyl)-D-arabinitol (9), and nine glycosides of 1. These glycosides consist of 2-O- and 6-O-alpha-D-galactopyranosyl-1-deoxynojirimycins (10 and 11, respectively), 2-O-, 3-O- and 4-O-alpha-D-glucopyranosyl-1-deoxynojirimycins (12, 13, and 14, respectively), and 2-O-, 3-O-, 4-O- and 6-O-beta-D-glucopyranosyl-1-deoxynojirimycins (15, 16, 17, and 18, respectively). Compound 4 is a new member of polyhydroxylated piperidine alkaloids, and the isolation of 6 is the first report of its natural occurrence. It has recently been found that the polyhydroxy-nor-tropane alkaloids possess potent glycosidase inhibitory activities. Calystegin A3 is the trihydroxy-nor-tropane, and calystegins B1 and B2 are the tetrahydroxy-nor-tropane. Calystegin C1, a new member of calystegins, is the first naturally occurring pentahydroxy-nor-tropane alkaloid. The inhibitory activities of these compounds were investigated against rat digestive glycosidases and various commercially available glycosidases.

  15. Foraging ecology of sanderlings Calidris alba wintering in estuarine and non-estuarine intertidal areas

    Science.gov (United States)

    Lourenço, Pedro M.; Alves, José A.; Catry, Teresa; Granadeiro, José P.

    2015-10-01

    Outside the breeding season, most shorebirds use either estuarine or non-estuarine intertidal areas as foraging grounds. The sanderling Calidris alba is mostly associated with coastal sandy beaches, a habitat which is currently at risk worldwide due to increasing coastal erosion, but may also use estuarine sites as alternative foraging areas. We aimed to compare the trophic conditions for sanderlings wintering in estuarine and non-estuarine sites within and around the Tejo estuary, Portugal, where these two alternative wintering options are available within a relatively small spatial scale. To achieve this, we analysed sanderling diet, prey availability, foraging behaviour, and time and energy budgets in the different substrates available in estuarine and non-estuarine sites. In terms of biomass, the most important sanderling prey in the estuarine sites were siphons of the bivalve Scrobicularia plana, polychaetes, staphylinids and the gastropod Hydrobia ulvae. In non-estuarine sites the main prey were polychaetes, the bivalve Donax trunculus and chironomid larvae. Both food availability and energetic intake rates were higher on estuarine sites, and sanderlings spent a higher proportion of time foraging on non-estuarine sites. In the estuary, sanderlings foraged in muddy-sand substrate whenever it was available, achieving higher intake rates than in sandy substrates. In the non-estuarine sites they used both sandy and rocky substrates throughout the tidal cycle but had higher intakes rates in sandy substrate. Estuarine sites seem to offer better foraging conditions for wintering sanderlings than non-estuarine sites. However, sanderlings only use muddy-sand and sandy substrates, which represent a small proportion of the intertidal area of the estuary. The extent of these substrates and the current sanderling density in the estuary suggest it is unlikely that the estuary could provide alternative wintering habitat for sanderlings if they face habitat loss and

  16. The SolemnAddress Uttered by Vasile Goldiş in Alba-Iulia on 1 December, 1918

    Directory of Open Access Journals (Sweden)

    Eugen GAGEA

    2011-01-01

    Full Text Available In the report he presented before the Great National Assembly of Alba-Iulia, Vasile Goldişunderlined some of the ideals for which humankind had fought and continued to fight in the postwarperiod: national freedom, social equality. The solemn address he uttered is an expression of hishumanism and confidence in human civilization, of the conviction that the organization of ademocratic state and the achievement of equality of rights for all citizens are and must be a “workof civilization”.

  17. Laparoscopic plication of the linea alba as a repair for diastasis recti – a mesh free approach

    Directory of Open Access Journals (Sweden)

    A.H Siddiky

    2010-07-01

    Full Text Available Diastasis recti is a common occurrence in multiparous women (1, caused by repeated stretching of the abdominal wall by the gravid uterus. A small proportion of patients have a persisting weakness which may be symptomatic and present to the surgeon. We would like to present a case which, thus far, has had a successful outcome from laparoscopic plication of the linea alba without mesh. The benefits of this approach are as for any laparoscopic versus open technique, most notably improved recovery time, reduced pain and wound infection. Furthermore, avoidance of a mesh negates the risks associated with insertion of a foreign body.

  18. RESPUESTAS FENOTÍPICAS DE Lippia alba Y Lippia origanoides (VERBENACEAE) A LA DISPONIBILIDAD DE AGUA EN EL SUELO

    OpenAIRE

    Camargo Parra Andres Alejandro; Rodriguez Lopez Nelson Facundo

    2008-01-01

    La capacidad de un genotipo particular de producir diferentes fenotipos es conocido como plasticidad fenotípica (PF). Este trabajo evaluó la PF a través de la ontogenia vegetativa en dos especies de la familia Verbenaceae, Lippia alba ampliamente distribuida en habitats favorables y Lippia origanoides ampliamente distribuida en habitats con bajo disponibilidad de recursos. Se evaluó si la PF está correlacionada con distribución ecologica, en respuesta al contenido relativo de agua en el suelo...

  19. Physico-Chemical Characteristics of the Products Derived from the Thermolysis of Waste Abies alba Mill. Wood

    OpenAIRE

    López, Félix A.; Rodríguez, Olga; Urien, Andrea; Lobato Ortega, Belén; Álvarez Centeno, Teresa; Alguacil, Francisco José

    2013-01-01

    [EN] This paper reports the physico-chemical characteristics of the products derived from the thermolysis (thermolytic distillation) of waste silver fir (Abies alba Mill.) wood at different temperatures (400℃- 600℃) in a pilot scale plant. Depending on the thermolysis temperature, the procedure yielded 45 - 53 wt% pyroligneous acid with a high water content (80 - 86 wt%) and pH ≈ 3.6. The process also produced a carbonaceous solid or biochar (23 - 26 wt%), its properties strongly dependent on...

  20. Toxicity of eight polycyclic aromatic compounds to the red clover (Trifolium pratense), ryegrass (Lolium perenne), and mustard (Sinapsis alba)

    DEFF Research Database (Denmark)

    Sverdrup, L. E.; Krogh, P. H.; Nielsen, T.;

    2003-01-01

    The effect of eight polycyclic aromatic compounds (PACs) on the seed emergence and early life-stage growth of three terrestrial plants (Sinapsis alba, Trifolium pratense and Lolium perenne) were studied in a greenhouse, using a Danish agricultural soil with an organic carbon content of 1.6%. After...... three weeks of exposure, seed emergence and seedling weight (fresh weight and dry weight) were determined. Exposure concentrations were veri.ed with chemical analysis. The substances tested were four polycyclic aromatic hydrocarbons (.uoranthene, pyrene, phenanthrene and .uorene), the N-, S-, and O...

  1. Toxicity of eight polycyclic aromatic compounds to red clover (Trifolium pratense), ryegrass (Lolium perenne), and mustard (Sinapsis alba)

    DEFF Research Database (Denmark)

    Sverdrup, L.E.; Krogh, P.H.; Nielsen, T.;

    2003-01-01

    The effect of eight polycyclic aromatic compounds (PACs) on the seed emergence and early life-stage growth of three terrestrial plants (Sinapsis alba, Trifolium pratense and Lolium perenne) were studied in a greenhouse, using a Danish agricultural soil with an organic carbon content of 1.6%. After...... three weeks of exposure, seed emergence and seedling weight (fresh weight and dry weight) were determined. Exposure concentrations were verified with chemical analysis. The substances tested were four polycyclic aromatic hydrocarbons (fluoranthene, pyrene, phenanthrene and fluorene), the N-, S-, and O...

  2. Pathogens present on vegetative organs and seeds of white mustard (Sinapis alba L.) and chinese mustad (Brassica juncea L.)

    OpenAIRE

    Barbara Majchrzak; Tomasz P. Kurowski; Zofia Karpińska

    2013-01-01

    The research was conducted in the years 1999-2001. The aim of the research was to determine the health condition of overground parts and seeds of white niuslard (Sinapis alba L.) cv. Metex and chinese mustard (Brassica juncea L.) cv. Małopolska. In all the years of the research alternaria blight was found on the leaves of white mustard which injury index ranged from 5,6% in 2001 to 17,6% in 200O. The most dangerous disease of chinese mustard also was alternaria blight and its symptoms were fo...

  3. THE RANKING OF FIRMS FROM ROMANIA, ALBA COUNTY BASED ON THEIRS TURNOVER, NET PROFIT AND TOTAL DEBTS

    OpenAIRE

    Sorin-Constantin Deaconu

    2012-01-01

    This paper investigates the accuracy of Top of the Companies elaborated byAlba County Chamber of Commerce and Industry and Agriculture based on theirs turnover.Thus, we want a correction to be made for the Top of the Companies and a change to be madefor the Chamber of Commerce and Industry of Romania Regulation in what concerns the wayto establish the order in which companies are ranked in the county competition. The analysiswas performed by calculating the coefficient of variation. The resul...

  4. Reduction of the anxiety of medical students after curricular reform Redução da ansiedade de estudantes de medicina após reforma curricular

    Directory of Open Access Journals (Sweden)

    Antonio Waldo Zuardi

    2008-06-01

    Full Text Available OBJECTIVES: Curricular structure may interfere in students' anxiety level at medical schools. The objective of this study was to assess anxiety levels in medical students before and after a curriculum reform at the Medical School of Ribeirão Preto and to compare them with students at other courses that had no curricular changes in the same university campus. METHOD: Study samples were obtained in two moments: 1 two years before the reform; 2 after the reform when the reformed curriculum completed its fourth year. The pre-sample (former curriculum consisted of 307 medical students and 217 students from psychology and biology courses. The post-sample (new curriculum was composed of 330 medical students and 194 students from psychology and biology courses. Anxiety was assessed by the State-Trait Anxiety Inventory (STAI. RESULTS: Comparing the pre with the post sample, we found STAI-T scores of the students under the former curriculum were significantly higher in the first (42.9 + 1.08 and second (41.9 + 1.1 years than the STAI-T scores of the medical students under the new curriculum (38.1 + 1.0 and 37.9 + 1.06, respectively. Students from other courses and 5th year medical students, who followed the same curriculum, did not show any significant differences between different samples. CONCLUSION: These results suggest that changes to medical school curricula may reduce the medical student' levels of anxiety in the first two years of the course.OBJETIVOS: Características da estrutura curricular podem interferir no nível de ansiedade dos alunos do curso médico. O objetivo deste estudo foi avaliar o nível de ansiedade nos alunos do curso médico, antes e depois de uma reforma no currículo da Faculdade de Medicina de Ribeirão Preto, comparando com outros cursos, do mesmo campus da universidade, que não tiveram mudanças curriculares. MÉTODO: As amostras do estudo foram obtidas em dois tempos distintos: 1 dois anos antes da reforma; 2 pós a

  5. Formação profissional ética: um compromisso a partir das diretrizes curriculares? Ethical professional education: a commitment based on the curricular guidelines?

    Directory of Open Access Journals (Sweden)

    Mirelle Finkler

    2010-11-01

    Full Text Available Esta reflexão problematiza o discurso e a prática que se estabelecem em torno do tema da formação ética dos profissionais da saúde e, mais particularmente, do cirurgião-dentista, situando o atual momento de implantação das Diretrizes Curriculares Nacionais no ensino superior brasileiro. Procura-se, desta forma, indicar alguns limites e possibilidades para uma formação ética condizente com o novo perfil profissional almejado.This reflection questions the discourse and practice surrounding the ethical education of health professionals and, more particularly, of dentists, situating the current state of deployment of the National Curriculum Guidelines in Brazilian Higher Education. The goal is to point to a few limits and possibilities for an ethical education in line with the new professional profile that is sought.

  6. La atención a la diversidad: del Modelo del Déficit al Modelo Curricular. Attention to Diversity: From the Deficit Model to the Curricular Model

    Directory of Open Access Journals (Sweden)

    Pilar Arnaiz Sánchez

    2007-12-01

    Full Text Available Este artículo presenta un estudio llevado a cabo en una escuela de Educación Primaria (3-12 años en la Región de Murcia (Sureste de España, con la finalidad de conocer las características de la respuesta educativa que se estaba desarrollando con los alumnos con necesidades educativas especiales escolarizados en ella. En el planteamiento teórico se revisa la trayectoria de la integración escolar en España y se expone la conveniencia de trabajar desde un modelo curricular. Los resultados del estudio, realizado desde los parámetros de la interpretación cualitativa, a través del modelo de Doyle (1979, 1986,1987, evidencian cuáles son las estructuras organizativas y las tareas que más favorecen la participación e integración de los alumnos con necesidades educativas especiales en las aulas regulares. This article presents a research study developed in a Primary School (3 to 12 years in the county of Murcia (South east of Spain. The study?s aim was to establish the educational response carried out with learners with special education needs in the school. The theoretical framework reviews the course of school integration in Spain and establishes the need to work from a curricular model. The results of this study, which follows the qualitative analysis model by Doyle (1979, 1986, 1987, show the organization structures and tasks that promote participation and integration of students with special education needs in mainstream classrooms.

  7. Guia curricular de saúde para o ensino de 1.º grau Curricular guide of health for the first grade school

    Directory of Open Access Journals (Sweden)

    Hebe da Silva Coelho

    1974-03-01

    Full Text Available Apresenta-se o "Guia Curricular de Saúde para o Ensino do 1.° Grau" aprovado oficialmente pela Secretaria de Educação do Estado de São Paulo para ser utilizado nas Escolas de 1.° grau. Após salientar os pontos fundamentais que foram levados em conta na sua elaboração - capacidade de aprendizado do escolar; situação do ensino formalizado de Saúde dentro do conjunto que se relaciona com a Saúde do Escolar; visão bio-psico-social de Saúde - foram destacados os objetivos gerais do guia e englobados o conteúdo de ensino em quatro temas básicos: Crescimento e Desenvolvimento; Nutrição; Higiene Física, Mental e Social; Agravos à Saúde. O conteúdo de cada tema básico é, depois, distribuido por série escolar e, finalmente, detalhados os objetivos específicos para cada série.There were presented the "Curricular Guide of Health for the First Grade School" which were oficially approved by Educational Department of S. Paulo State, Brazil, and which is to used for the First Grade School. There were emphasized the fundamental points which were used in the elaboration of the guide such as - the capacity of learning of the scholar; the situation of Education in Health in the context related to the Scholar Health; the bio-psycho-social view of Health - there were pointed out the general objectives which cover the education contents in four bascial items: Knowledge and development; Nutrition; Physical, Mental and Social Hygiene; Health damage. The content of each basical item is distributed for each year of the first grade school in order to cover specific objectives for each year.

  8. Performance of ginger grass (Lippia alba for traits related to the production of essential oil Desempenho da erva-cidreira (Lippia alba para características relacionadas à produção de óleos essenciais

    Directory of Open Access Journals (Sweden)

    Paula Yuri Yamamoto

    2008-01-01

    Full Text Available Lippia alba (Verbenaceae is a shrub whose essential oil has important biological, pharmacological, and aromatizing properties. To reach the sustained cultivation of new species with economic potential, the present study aimed to evaluate L. alba performance for fresh leaf matter (FM, leaf dry matter (DM, virus symptoms (VS - Cucumber mosaic virus, CMV, oil yield (OY, and oil chemical composition (OC, and to evaluate DM stability and adaptability. Ten genotypes of four chemical groups (chemotypes were evaluated in six experiments designed as randomized blocks with two plants per plot, over the whole State of São Paulo, Brazil. A 2.0 x 0.4 x 1.6 m spacing was used in Monte Alegre do Sul and Pindorama, while a 1.0 x 0.4 x 0.6 m spacing was used in Campinas, where four experiments were established under different irrigation and fertilization conditions. The genotype effect was significant (p A Lippia alba (Verbenaceae é um arbusto produtor de óleo essencial com importantes atividades biológicas, farmacológicas e aromatizantes. Visando o cultivo sustentado de uma nova espécie com potencial econômico, os objetivos deste trabalho foram avaliar o desempenho da L. alba para massa de folha fresca (MF, massa de folha seca (MS, sintomas de vírus (SV - Cucumber mosaic virus, CMV, rendimento de óleo essencial (RE e composição química do óleo (CQ, e avaliar a estabilidade e adaptabilidade fenotípica para o caráter MS. Dez genótipos pertencentes a quatro grupos químicos foram testados em seis experimentos instalados no estado de São Paulo, Brasil, com delineamento em blocos ao acaso e duas plantas por parcela. Em Monte Alegre do Sul e Pindorama, foi utilizado espaçamento de 2,0 x 0,4 x 1,6 m e em Campinas, foram instalados quatro experimentos 1,0 x 0,4 x 0,6 m sob condições distintas de adubação e irrigação. O efeito de genótipo foi significativo para todas as características avaliadas, revelando elevada produtividade de folhas do IAC

  9. PCN - CONHECIMENTOS DE QUÍMICA, UM OLHAR SOBRE AS ORIENTAÇÕES CURRICULARES OFICIAIS.

    Directory of Open Access Journals (Sweden)

    Albino Oliveira Nunes

    2008-03-01

    Full Text Available Os Parâmetros Curriculares Nacionais para o Ensino Médio foram elaborados para guiar a prática docente rumo a uma reforma educacional pretendida para o modelo brasileiro em consonância com a Lei de Diretrizes e Bases da Educação Brasileira (LDB, 1996. Esse documento foi elaborado por especialistas das diversas áreas a pedido do Ministério da Educação, processo distinto do desejado que seria a construção em processo democrático onde os professores tivessem a possibilidade de produzir um documento que orientaria a direção de suas práticas pedagógicas, onde o docente se sentiria como co-participante do processo. Além disso, há que se levar em consideração a adequação deste documento quanto ao objetivo de orientar a (reconstrução curricular. Notadamente na secção PCN – Conhecimentos de Química, este documento apresenta insuficiências significativas para o seu propósito, tais como: superficialidade, discurso autoritário, etc. Contudo, o PCN – Ciências da Natureza, Matemática e suas Tecnologias, pode ser visto como um marco, uma vez que fomenta o debate sobre a reestruturação curricular do ensino de ciências e matemática em nosso país.

  10. Tratamiento curricular de la imagen corporal, autoestima y autoconcepto en España

    OpenAIRE

    Antonio V. Rodríguez; Manuel Estévez; Juan Palomares

    2015-01-01

    La adolescencia es un periodo del desarrollo del ser humano en el que proliferan problemas con la percepción de la imagen corporal, la autoestima y el autoconcepto, mientras el niño se encuentra cursando estudios de Educación Secundaria Obligatoria. Este estudio analiza el tratamiento curricular que se dedica a la imagen corporal, la autoestima y el autoconcepto en los diferentes elementos legislativos en el ámbito educativo de la Comunidad Valenciana (España), mediante una metodología cualit...

  11. La reforma curricular universitaria: evaluación y mejoramiento académico

    OpenAIRE

    Josefina Quintero Corzo; Juan Carlos Yepes Ocampo; Raúl Ancízar Munévar Molina

    2006-01-01

    Este artículo somete a discusión algunas ideas sobre reforma curricular universitaria surgidas de la crítica al discurso teórico y empírico que caracteriza los esquemas tradicionales. Se demuestra que la manera como se ha venido implementando, no satisface las políticas institucionales de cambio y mejoramiento académico. Se analiza el vínculo entre currículo e investigaci ón y su importancia para el proceso de reforma y mejoramiento académico.

  12. El diseño curricular como factor de calidad educativa

    OpenAIRE

    Casanova, María Antonia

    2012-01-01

    Ante el interés internacional de mejorar la calidad educativa de los sistemas institucionales, el artículo se centra en la afirmación de que esto solo se conseguirá mediante la plasmación en el diseño curricular y en todos sus elementos de los cambios, innovaciones y reformas necesarios para ello. Por lo tanto, tras definir lo que sería una calidad educativa adecuada para la sociedad presente y del futuro próximo, se abordan los distintos elementos que componen el currículum (competencias, ob...

  13. Programa curricular de la segunda especialidad en formación magisterial

    OpenAIRE

    Elsa Tueros Way

    1993-01-01

    Este documento presenta las demandas para la formación de docentes objetivos de la Segunda Especialidad, se definen los perfiles real e ideal del docente de ISPs y se señalan los requisitos de los usuarios de este programa. Estos elementos sirven para sustentar la Estructura Curricular: Areas de estudio (Investigación Educativa,Teoría y Realidad Educativa, Diseño y Evaluación del Curriculum,y Desarrollo Comunal y Regional), el Plan de estudios y la descripciónde los cursos. Asimismo, se señal...

  14. Participación de los y las docentes en la transformación curricular

    Directory of Open Access Journals (Sweden)

    Rojas Madrigal, Carolina

    2012-02-01

    Full Text Available Resumen: Este ensayo fue elaborado a partir del enlace de dos momentos: el primero, relacionado con la experiencia de la autora como docente universitaria, y como integrante y coordinadora de la Comisión de Currículum, de la Escuela de Trabajo Social, de la Universidad de Costa Rica. El segundo, propiciado por la reflexión sobre estas prácticas en un grupo de estudio sobre diseño curricular en el Centro de Evaluación Académica de la misma Universidad. Tener el espacio para conjugar experiencia y reflexión permitió retomar labores esenciales que las y los docentes pueden realizar para transformar el currículum, si se parte de una comprensión compleja, histórica y contextual de este. Se concluye, en este sentido, que el diseño y desarrollo curricular son dos momentos inseparables, donde el cuerpo docente puede tener una participación activa y crítica. El análisis realizado, fuertemente imbricado al referente de la propia práctica, se concreta en una propuesta de acciones posibles, cuya viabilidad aumenta si el profesorado cuenta con la formación necesaria, y con una actitud permanente de autocrítica y reflexión.Abstract: This essay was elaborated by the combination of two different moments; the first one related with the experience of the author in his labor as a university educator, and as a integrant and coordinator of the Curriculum Commission of the Social Work School at the University of Costa Rica. The second, based on this practices, propitiated by the reflections emanated from a group of study on curricular design, in the Center of Academic Evaluation of this University. Given this space for combine experience with reflection, permitted to retake essential labors that the docents can do to transform the curriculum, if it parts of a complex contextual and historic understanding of it. It’s concludes that in this sense, the curricular development and design, are two inseparable moments on who the docents can have an

  15. The curricular training and the didactics in training of teachers: challenges and possibilities

    OpenAIRE

    Cyntia Graziella Guizelim Simões Girotto; Rosane Michelli de Castro

    2013-01-01

    In this paper we addressed aspects of the disciplines “Curricular Training” and “Didactics” in the Pedagogy Course in training of teachers. The main objective is to emphasize upon submission of the work that we do in our teaching practice in the mentioned disciplines, the importance of linking the theory and the practice in training of teachers so that the teaching in the university it is not decontextualized but enriched with the issues of everyday school life. In this sense, we address, ini...

  16. Fundamentos curriculares para una maestría en producción audiovisual

    OpenAIRE

    Maria Alvarado, Nerio Vílchez

    2008-01-01

    El estudio de los fundamentos curriculares para una maestría en producción audiovisual se apoya en Vílchez (2005), Postner (2001), Maldonado (2001), Boluda (2005), Tünnermann (2005), Miranda (2003), Morles (2005), Vaughan (2000), entre otros. La investigación es aplicada, descriptiva, con un diseño no experimental, ransaccional descriptivo, de campo. A la población constituida por diez (10) directivos de las universidades de Maracaibo, que ofrecen Carreras de Comunicación Social en pregrado, ...

  17. Reforma curricular: el nuevo reto del asesor académico

    Directory of Open Access Journals (Sweden)

    Germán Arango Forero

    2003-01-01

    Full Text Available La inminente reforma curricular que será implementada en la Facultad de Comunicación Social y Periodismo de la Universidad de La Sabana obliga a replantear mucho más que un plan de estudios. La nueva manera de formar a un comunicador, implica igualmente un reto especial a todo el cuerpo docente, que cumple, además, una función muy especial desde la Asesoría Académica Personalizada.

  18. Experiencias curriculares en la educación a distancia para el desarrollo de habilidades cognitivas

    OpenAIRE

    Herrera, Yudi

    2010-01-01

    El presente artículo presenta una experiencia curricular de educación en ambientes virtuales de aprendizaje, en el contexto de la tutoria de tesis en la maestría de Informática Educativa. En este documento se muestra la relevancia del diseño instruccional en concordancia con enfoques pedagógicos que lo orienten. El diseño instruccional está basado en la promoción de habilidades cognitivas y el aprendizaje reflexivo, para ello tanto la infraestructura tecnológica como las actividades guarda...

  19. Sostenibilidad Curricular en los Planes de Estudios de la Universidad de Cádiz

    OpenAIRE

    González Aragón, Carmen

    2012-01-01

    En los últimos años asistimos a una fuerte demanda para que la Universidad responda a las necesidades formativas que reclama la sociedad actual. La “Educación para la Sostenibilidad” se reconoce desde diferentes organismos e instituciones como un elemento clave en dicha formación. Educar para la sostenibilidad implica cambiar las propuestas curriculares e introducir nuevas formas de concebir los procesos formativos. En la presente investigación analizamos la presencia de los principios de la ...

  20. Projecto curricular : mudança de práticas ou oportunidade perdida?

    OpenAIRE

    Morgado, José Carlos; Martins, Fernando Benjamim

    2008-01-01

    Com base nas opiniões de uma amostra representativa dos professores que, no ano escolar de 2004/2005, leccionaram em escolas oficiais do 2º e 3º ciclos do Ensino Básico do distrito do Porto, procuramos ao longo deste texto problematizar a importância que consignam ao projecto curricular como elemento estruturante das suas práticas pedagógicas e como factor de melhoria do seu desenvolvimento profissional. Based on feedback from a representative sample of teachers who, in the ...

  1. Mental Discipline, Curricular Reform, and the Decline of U.S. Astronomy Education, 1893-1920

    Science.gov (United States)

    Marché, Jordan D., II

    Nineteenth-century astronomy education rested on a powerful rationale of support within American liberal arts colleges and high schools. Descriptive astronomy was widely regarded as suitable for improving a student's "mental discipline." But the collapse of mental discipline pedagogy, along with concurrent efforts to standardize and reform secondary-level curricula, were responsible for a significant post-1900 decline in astronomical teaching. As a result, astronomy education was not broadly reinstated into secondary curricula until after the launch of Sputnik in 1957. This report demonstrates that changing relationships between disciplinary specialties and pedagogical theories provide no guarantee of sustained curricular success--a conclusion equally relevant to today's science educators.

  2. Un modelo formativo para avanzar en la ambientalización curricular

    OpenAIRE

    Josep Bonil; Genina Calafell; Jesús Granados; Mercè Junyent; Rosa Maria Tarín

    2012-01-01

    Se presenta una investigación de carácter cualitativo que pretende dar respuestas al diagnóstico compartido sobre el déficit en la formación de los equipos educativos en relación a la ambientalización curricular. Presentamos un modelo de formación que se ha implementado en una actividad formativa dirigida a docentes de educación primaria y secundaria y a asesores en educación ambiental pertenecientes a la Xarxa d’Escoles per a la Sostenibilitat de Catalunya. El modelo tiene como finalidad sal...

  3. Developing successful extra curricular programs for the K-12 grades: Interfacing scientists with schools

    Science.gov (United States)

    Chandrasekhar, Meera

    2000-09-01

    Early familiarity is regarded as one of the keys to attracting female students to traditionally male professions. I will describe four different extra curricular programs that my collaborators in the local school district and I have developed for students in grades 5-12. These programs are part of a project entitled "Promoting Young Women in the Physical sciences", which also includes teacher training and programs in which parents participate with the child. Through these sustained and broad-based interventions, we provide early experiences that we expect will prove positive to students. I will also address the successes and difficulties in starting and sustaining these programs.

  4. Un modelo formativo para avanzar en la ambientalizaci??n curricular

    OpenAIRE

    Bonil, Josep; Calafell, Genina; Granados, Jes??s; Junyent, Merc??; Mar??a Tar??n, Rosa

    2012-01-01

    Se presenta una investigaci??n de car??cter cualitativo que pretende dar respuestas al diagn??stico compartido sobre el d??ficit en la formaci??n de los equipos educativos en relaci??n a la ambientalizaci??n curricular. Presentamos un modelo de formaci??n que se ha implementado en una actividad formativa dirigida a docentes de educaci??n primaria y secundaria y a asesores en educaci??n ambiental pertenecientes a la Xarxa d???Escoles per a la Sostenibilitat de Catalunya. E...

  5. A empregabilidade nos Parâmetros Curriculares Nacionais: implicações e limites a formação humana/The empregabilidade in the National Curricular Parameters: implications and limits the formation human being

    OpenAIRE

    Luciano Accioly Lemos Moreira

    2007-01-01

    O presente trabalho analisa, à luz da ontologia marxiana, a formação voltada para a empregabilidade contida nos Parâmetros Curriculares Nacionais (1998/1999), nos Temas Transversais (1998) e nas Diretrizes Curriculares Nacionais do Ensino Médio (1999). A análise desta problemática, com base nos fundamentos da perspectiva ontológico-marxiana, permitiu constatar que a formação na perspectiva da empregabilidade articula-se com as categorias da cidadania e do consumidor. A empregabilidade cumpre ...

  6. Reflexões acerca da organização curricular e das práticas pedagógicas na EJA Reflexions about curricular organisation and pedagogical practices in adult education

    Directory of Open Access Journals (Sweden)

    Inês Barbosa de Oliveira

    2007-01-01

    Full Text Available Esse texto aborda alguns pontos da reflexão curricular contemporânea, no que se refere ao estudo de novas formas de organização curricular destinadas à educação de jovens e adultos. Em seu início, traz uma breve abordagem histórica a respeito da educação de jovens e adultos no Brasil, que tem por objetivo situar o leitor no debate. Depois, partindo de relatos de situações reais vivenciadas pela autora ou por pessoas próximas, são discutidos alguns dos principais problemas que percebo nas práticas curriculares desenvolvidas na educação de jovens e adultos, como a infantilização dos educandos ou inadequação de conteúdos e modos de abordá-los, bem como de linguagem. A partir disso, uma reflexão mais teórica a respeito de como entendo os processos de tessitura de conhecimentos é desenvolvida, pretendendo contribuir para a reflexão em torno das possibilidades de superação destes problemas. Finalmente, discuto algumas concepções de currículo e seus fundamentos para chegar à proposição de um debate sobre as possibilidades de novos desenhos curriculares que possam ser mais adequados aos nossos alunos da EJA do que as propostas tradicionais.This text approaches some points about the contemporary curricular reflection, referring to the study of new forms of curricular organization bound for the youth and adults education. In its beginning, the text brings a brief approach of the history of the youth and adults education in Brasil, aiming to place the reader in the debate. Then, using the relates of real situations lived by the author or by close people, I discuss some of the main problems that can be perceived in the curricular practices developed in the youth and adult education, as the childish treatment of the students or the inadequate contents or way of treating them and the speech used as well. From this, a theoretical reflection about how I understand the process of weaving the knowledge is developed, where I

  7. In vitro antifungal activity of four chemotypes of Lippia alba (Verbenaceae essential oils against Alternaria solani (Pleosporeaceae isolates

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    ELISA Z. TOMAZONI

    2016-06-01

    Full Text Available Several volatile natural compounds produced by plant secondary metabolism have been proven to present antimicrobial action, enabling their use in phytopathogen control. They also present low environmental impact when compared to conventional pesticides. Essential oils contain these compounds and can be found in several plant species, such as Lippia alba (Mill. N.E. Brown (Verbenaceae. Essential oils of four chemotypes of L. alba, characterized by their major compounds, namely camphor, citral, linalool and camphor/1,8-cineole, were tested against the phytopathogen Alternaria solani Sorauer (Pleosporaceae, which causes early blight on tomatoes and is responsible for great economic losses regarding production. Essential oils antifungal action was tested in vitro using potato dextrose agar medium with essential oil concentrations at 0.1, 0.5, 1.0, 1.5 and 2.0 µL mL-1. The chemotype that had the best performance was citral, showing significant inhibition compared to the others, starting at the 0.5 µL mL-1 concentration. The essential oil belonging to the linalool chemotype was efficient starting at the 1.5 µL mL-1 concentration. Conversely, the camphor chemotype did not show any action against the phytopathogen. Moreover, the essential oils had no remarkable effect on tomato germination and growth. In conclusion, these essential oils presented fungicidal action against A. solani.

  8. HMG-CoA reductase inhibitory activity and phytocomponent investigation of Basella alba leaf extract as a treatment for hypercholesterolemia.

    Science.gov (United States)

    Baskaran, Gunasekaran; Salvamani, Shamala; Ahmad, Siti Aqlima; Shaharuddin, Noor Azmi; Pattiram, Parveen Devi; Shukor, Mohd Yunus

    2015-01-01

    The enzyme 3-hydroxy-3-methyl-glutaryl-coenzyme A (HMG-CoA) reductase is the key enzyme of the mevalonate pathway that produces cholesterol. Inhibition of HMG-CoA reductase reduces cholesterol biosynthesis in the liver. Synthetic drugs, statins, are commonly used for the treatment of hypercholesterolemia. Due to the side effects of statins, natural HMG-CoA reductase inhibitors of plant origin are needed. In this study, 25 medicinal plant methanol extracts were screened for anti-HMG-CoA reductase activity. Basella alba leaf extract showed the highest inhibitory effect at about 74%. Thus, B. alba was examined in order to investigate its phytochemical components. Gas chromatography with tandem mass spectrometry and reversed phase high-performance liquid chromatography analysis revealed the presence of phenol 2,6-bis(1,1-dimethylethyl), 1-heptatriacotanol, oleic acid, eicosyl ester, naringin, apigenin, luteolin, ascorbic acid, and α-tocopherol, which have been reported to possess antihypercholesterolemic effects. Further investigation of in vivo models should be performed in order to confirm its potential as an alternative treatment for hypercholesterolemia and related cardiovascular diseases. PMID:25609924

  9. A regulatory approach on low temperature induced enzymatic and anti oxidative status in leaf of Pui vegetable (Basella alba).

    Science.gov (United States)

    Shahidul Haque, Md; Monirul Islam, Md; Abdur Rakib, Md; Asraful Haque, Md

    2014-09-01

    Basella alba is a soft green vegetable, survives in adverse environmental circumstances, for example, very cold temperature although the mechanism and the temperature sensitivity in this species are not clarified. Pot experiment for cultivation of B. alba was carried out to examine the effects of low temperature on the synthesis of two enzymes, polyphenol oxidase (PPO) and peroxidase (POD) in leaf of this plant. They were exposed to 8 °C for 24 h, 48 h and 72 h periods and the respective controls were kept in ambient room temperature for the above mentioned time. Low temperature causes the higher activity of PPO and the threshold level was found after 48 h period when compared to the respective controls. The activity was higher at 10 mM catechol, substrate for this enzyme, than 100 mM and 200 mM concentration, however, the three doses yielded the gradual increase in activity. Similar stimulatory effects on peroxidase (POD) activity in leaf were observed whenever the plants were exposed to cold for 24 h, 48 h and 72 h periods and maximal after 48 h period. Our findings demonstrate that the higher activity of these enzymes in leaf might be an index for the regulatory mechanism of the survival of these species in such adverse environment. PMID:25183947

  10. Morpho-physiological response of Populus alba to erythromycin: A timeline of the health status of the plant.

    Science.gov (United States)

    Pierattini, Erika Carla; Francini, Alessandra; Raffaelli, Andrea; Sebastiani, Luca

    2016-11-01

    Populus alba Villafranca clone was chosen for a proof of concept study to determine the potential uptake and accumulation of antibiotics by trees. Plants were grown hydroponically and irrigated with a recirculating Hoagland's nutrient solution (control) and Hoagland's nutrient solution fortified with erythromycin at 0.01, 0.1 and 1mgL(-1). After 3 and 28days of treatment, poplar plants were separated into roots, stem, and leaves. Plants showed good health all over the period of treatment, and no differences in poplar growth for all the concentrations of erythromycin tested were observed. Quantification of erythromycin was performed using liquid chromatography electrospray ionization tandem mass spectrometry (LC-MS/MS) in positive ion mode using multiple reaction ion monitoring. Erythromycin was detected in all organs analyzed. Roots showed an erythromycin concentration tenfold higher than leaves. The photochemical efficiency of photosystem II did not show a dose-dependant trend. From the quenching analysis of chlorophyll fluorescence, low nonphotochemical quenching (NPQ) and high photochemical quenching (qP) for the first week of erythromycin exposure was observed, depending on leaves position along the stem. Results suggest a short term adaptation of the photosynthetic apparatus of Populus alba in response to environmental realistic erythromycin concentrations. PMID:27366984

  11. Effects of extracts from Hibiscus macranthus and Basella alba mixture on testosterone production in vitro in adult rat testes slices

    Institute of Scientific and Technical Information of China (English)

    Paul F. Moundipa; Silvère Ngouela; Pierre Kamtchouing; Etienne Tsamo; Félicité M. Tchouanguep; Serge Carreau

    2006-01-01

    Aim: To find an in vitro system for the measurement of the androgenic effects of different extracts of Hibiscus macranthus (Malvaceae) and Basella alba (Basellaceae). Methods: The production of testosterone from testes slices incubated in two media, either Krebs-Henseleit buffer containing 0.5 % Bovine serum albumin (BSA) or Dubecco's Modified Eagle's medium-F12 Ham nutrient mixture (DME/Ham F12), under a mixture of 5 % CO2 in 95 % air was determined either in the presence or absence of cofactors and Hibiscus macranthus plus Basella alba (HMBA)extracts. Results: The testosterone production was increased in testes slices incubated in DME/Ham F12 medium in response to the cofactors (49 %) and aqueous extracts (34 %-60 % according to dilutions). Under the same atmospheric conditions, there was no positive response of the testes slices to either cofactor or HMBA extract stimulation in Krebs-Henseleit buffer containing 0.5 % BSA. In further investigations related to the effect of HMBA, the DME/Ham F12 medium was used. The results obtained from the in vitro test showed that the activity was present mainly in methylene chloride and methanol, since these extracts induced an increase in testosterone production by testes slices. Conclusion: The testes slice system is suitable to be used for further in vitro investigations of the isolation of androgenic bioactive components of plants.

  12. Effects of aqueous root extract of Carpolobia alba G. Don on sexual behaviour in adult male rats.

    Science.gov (United States)

    Kenmogne, H; Koloko, B; Hambe, C; Domkam, J; Ngaha Njila, M; Bend, E; Oundoum Oundoum, P; Massoma Lembè, D; Dimo, T

    2016-10-01

    Several lines say that a number of natural products, mostly plant based, have been claimed to cure male sexual dysfunction. One of such botanicals is Carpolobia alba G. Don which is used in Cameroon to treat erectile dysfunction and related male sexual debilities. However, the traditional claim has not been scientifically tested. Thirty adult male rats (five groups of six animals) were orally treated daily with distilled water, sildenafil citrate (positive control), 75, 150, 300 mg/kg of C. alba G. Don roots aqueous extract. The erection and ejaculation properties were recorded on the first, seventh and fourteenth day of treatment by following copulation settings: number of erections (NE), mount frequency (MF), intromission frequency (IF), ejaculation frequency (EF), mount latency (ML), intromission latency (IL), ejaculation latency (EL), average interval of copulation (AIC) and post-ejaculatory interval (PEI). The extract resulted in an improvement of copulation parameters through significant reduction (p erectile and pro-ejaculatory potential of aqueous root extract of this plant in male rats. PMID:27681647

  13. Upper Cretaceous - lowermost Miocene lithostratigraphic units exposed in Alba Iulia-Sebes-Vintu de Jos area (SW Transylvanian Basin

    Directory of Open Access Journals (Sweden)

    Vlad Codrea

    2004-04-01

    Full Text Available A main area where several Uppermost Cretaceous-Lower Cenozoic formations are exposed in the SW Transylvanian Depression is the region outlined by the localities Alba Iulia, Sebeş, Vinţu de Jos (Alba district. In Maastrichtian, continental formations belonging to the post-Laramian cover began their deposition. In Early Cenozoic, the dominance of continental formations continued, but some short marine transgress events occur too, with specific marine and brackish deposits interbedded into the continental successions. Some new lithostratigraphic units are proposed: Vurpăr (Maastrichtian, Şard (Maastrichtian-Late Eocene, Bărăbanţ (Oligocene and Sântimbru (Aquitanian formations. Ighiu Fm. (Late Eocene-Early Oligocene is also reinterpreted. This region is an outstanding one for the fossil vertebrate heritage too due to the Uppermost Cretaceous (Maastrichtian dinosaur fauna discovered into Vurpăr and Şard formations, very similar with the famous faunas described by Nopcsa from Haţeg Basin. The autochthony of these fossils is obvious. In this context, some corrections should be done on several older geological maps, where these deposits correspond to erroneous geological ages.

  14. In vitro antifungal activity of four chemotypes of Lippia alba (Verbenaceae) essential oils against Alternaria solani (Pleosporeaceae) isolates.

    Science.gov (United States)

    Tomazoni, Elisa Z; Pansera, Márcia R; Pauletti, Gabriel F; Moura, Sidnei; Ribeiro, Rute T S; Schwambach, Joséli

    2016-05-31

    Several volatile natural compounds produced by plant secondary metabolism have been proven to present antimicrobial action, enabling their use in phytopathogen control. They also present low environmental impact when compared to conventional pesticides. Essential oils contain these compounds and can be found in several plant species, such as Lippia alba (Mill.) N.E. Brown (Verbenaceae). Essential oils of four chemotypes of L. alba, characterized by their major compounds, namely camphor, citral, linalool and camphor/1,8-cineole, were tested against the phytopathogen Alternaria solani Sorauer (Pleosporaceae), which causes early blight on tomatoes and is responsible for great economic losses regarding production. Essential oils antifungal action was tested in vitro using potato dextrose agar medium with essential oil concentrations at 0.1, 0.5, 1.0, 1.5 and 2.0 µL mL-1. The chemotype that had the best performance was citral, showing significant inhibition compared to the others, starting at the 0.5 µL mL-1 concentration. The essential oil belonging to the linalool chemotype was efficient starting at the 1.5 µL mL-1 concentration. Conversely, the camphor chemotype did not show any action against the phytopathogen. Moreover, the essential oils had no remarkable effect on tomato germination and growth. In conclusion, these essential oils presented fungicidal action against A. solani. PMID:27254445

  15. Antimicrobial activity of polyphenol-rich fractions from Sida alba L. (Malvaceae against co-trimoxazol-resistant bacteria strains

    Directory of Open Access Journals (Sweden)

    Konaté Kiessoun

    2012-02-01

    Full Text Available Abstract Background The increased resistance of microorganisms to the currently used antimicrobials has lead to the evaluation of other agents that might have antimicrobial activity. Medicinal plants are sources of phytochemicals which are able to initiate different biological activities including antimicrobials Materials and methods In vitro antibacterial (MIC, MBC and time-kill studies of polyphenol-rich fractions from Sida alba L. (Malvaceae was assessed using ten bacteria strains (Gram-negative and Gram-positive. Results All test bacteria were susceptible to the polyphenol-rich fractions. Time-kill results showed that after 5 h exposition there was no viable microorganism in the initial inoculum and the effect of polyphenol-rich fractions was faster on Enterococcus faecalis (Gram-positive bacterium comparatively to the other bacteria strains. Conclusion The data analysis indicates that the tested of polyphenol-rich fractions has significant effects when compared with the standard antibiotic. These results therefore justify the traditional use of sida alba L., alone or in combination with other herbs to treat bacterial infections.

  16. Projected benefit-cost analysis of agri-silvicultural system: vegetable crops intercropping with Salix alba (Willow)

    Institute of Scientific and Technical Information of China (English)

    Aijaz Hussain Mir; M.A. Khan

    2008-01-01

    An experiment upon an agri-silvicultural system involving Willow (Salix alba) tree,Kale (Brassica oleracea var.acephala) and Knol khol (Brassica oleracea var.caularapa) was laid in randomized block designed at farmers' willow field at Shalimar near Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir,Srinagar India during 2005 and 2006.The main plot was divided into sub-spots with 8 m ( 2 m in size each in which four two-year-old willow (Salix alba) trees were at a spacing of 2 m ( 2 m in a sub-spot.The intercrops were maintained at recommended spacing and supplied with recommended doses of fertilizers.The benefit-cost ratio in willow plantation intercropped with vegetable crops of Kale and Knol Khol was analyzed and compared with the benefit-cost ratio of sole willow tree forestry.The results showed that every rupee invested in plantation of agri-silvicultural system generates benefit-cost ratio of 2.78 and 2.79 in case of Willow intercropping with Kale and Willow with Knol khol,respectively,while as for sole crop of willows benefit-cost ratio was calculated to be 2.66.These results provided circumstantial evidence in favour of adopting agroforestry involving willow instead of Sole tree forestry.

  17. La incidencia de las tesis de doctorado en el posgrado de pedagogía de la Universidad Nacional Autónoma de México en la línea de investigación teoría y desarrollo curricular, didáctica, evaluación y comunicación durante el período 2000-2006 /

    OpenAIRE

    Orozco Arellano, Elba sustentante.

    2009-01-01

     tesis que para obtener el título de Licenciado en Pedagogía, presenta Elba Orozco Arellano ; asesor María Concepción Barrón Tirado. 59, [19] páginas. Licenciado en Pedagogía UNAM, Facultad de Filosofía y Letras, 2009

  18. Europeanization or Curricular Harmonization in the Area of Administrative Sciences in Romania (Follow-Up of Bologna Process). Comparative Analysis and Empirical Research

    OpenAIRE

    Lucica MATE

    2008-01-01

    The paper aims a comparative analysis of curricula for Bachelor studies in the area of administrative sciences. The objectives of research focused on elaboration of a set of indicators, based on the curricular contents of the programmes from the first cycle in administrative sciences, aiming to size “the Europeanism degree” and the curricular compatibilisation degree between Romanian and European universities.

  19. Europeanization or Curricular Harmonization in the Area of Administrative Sciences (Follow-Up of Bologna Process): Comparative Analysis and Empirical Research

    OpenAIRE

    Lucica MATEI

    2007-01-01

    The paper aims a comparative analysis of curricula for Bachelor studies in the area of administrative sciences. The objectives of research focused on elaboration of a set of indicators, based on the curricular contents of the programmes from the first cycle in administrative sciences,aiming to size 'the Europeanism degree' and curricular compatibilisation degree between Romanian and European universities

  20. Investigation of the Chemical Changes from Crude and Processed Paeoniae Radix Alba-Atractylodis Macrocephalae Rhizoma Herbal Pair Extracts by Using Q Exactive High-Performance Benchtop Quadrupole-Orbitrap LC-MS/MS

    Directory of Open Access Journals (Sweden)

    Gang Cao

    2014-01-01

    Full Text Available The Paeoniae Radix Alba-Atractylodis Macrocephalae Rhizoma herbal pair is mainly used for regulating the functions of liver and spleen, benefiting qi, and nourishing blood. However, the bioactive compounds for the pharmacological activities of the crude and processed Paeoniae Radix Alba-Atractylodis Macrocephalae Rhizoma herbal pair extracts are still unclear to date. In the present study, Q Exactive high-performance benchtop quadrupole-Orbitrap LC-MS/MS was applied to identify the complicated components from crude and processed Paeoniae Radix Alba, crude and processed Atractylodis Macrocephalae Rhizoma, and their crude and processed herbal pair extracts. 123 and 101 compounds were identified in crude and processed Paeoniae Radix Alba samples, respectively. Meanwhile, 32 and 26 compounds were identified in crude and processed Atractylodis Macrocephalae Rhizoma samples, respectively. In the crude and processed Paeoniae Radix Alba-Atractylodis Macrocephalae Rhizoma herbal pair extracts, co-decoction could significantly change the chemical composition of Paeoniae Radix Alba and Atractylodis Macrocephalae Rhizoma in solution. The developed method may provide a scientific foundation for deeply elucidating the processing and compatibility mechanism of Paeoniae Radix Alba and Atractylodis Macrocephalae Rhizoma.

  1. Bases psicológicas y diseño curricular para el grado elemental de música.

    OpenAIRE

    Lozano Rodríguez, José

    2007-01-01

    RESUMEN Esta tesis doctoral es el resultado de las investigaciones llevadas a cabo durante varios años con la intención de mejorar el proceso de enseñanza/aprendizaje del grado elemental de música, dentro de las enseñanzas artísticas, en la especialidad de clarinete. Para ello, se ha elaborado expresamente un diseño curricular adecuado para la enseñanza y el aprendizaje del clarinete en ese grado enfocándolo desde una perspectiva psicológica. Este diseño curricular consta de dos materiales...

  2. Aportes curriculares para la educación en medios, un proceso en construcción

    OpenAIRE

    Opertti, Renato

    2009-01-01

    El análisis de la educación en medios desde una perspectiva educativa y curricular es el objeto de este trabajo que enfatiza el desarrollo de las competencias que requieren los alumnos para su participación activa en el mundo actual. Se analizan los procesos de desarrollo curricular que, integrados por componentes políticos y técnicos, reflejan el tipo de sociedad que aspiramos a construir. Asimismo, se presenta el concepto de educación inclusiva como una visión educativa que busca garantizar...

  3. The 2″-O-glucosylation of vitexin and isovitexin in petals of Silene alba is catalysed by two different enzymes

    NARCIS (Netherlands)

    Heinsbroek, R.; Brederode, J. van; Nigtevecht, G. van; Maas, J.; Kamsteeg, J.; Besson, E.; Chopin, J.

    1980-01-01

    Two separate genes, Fg and Vg, which govern the presence of isovitexin 2″-O-glucoside and vitexin 2″-O-glucoside respectively in the petals of Silene alba control different glucosyltransferases. In Vg/Vg,fg/fg plants no isovitexin 2″-O-glucosyltransferase was present and in vg/vg,Fg/Fg plants no vit

  4. Conservation status of white poplar (Populus alba L. and black poplar (Populus nigra L. in the territory of Great War Island

    Directory of Open Access Journals (Sweden)

    Šijačić-Nikolić Mirjana

    2014-01-01

    Full Text Available T he paper describes t he conservation status of white poplar (Populus alba L. and black poplar (Populus nigra L. in the territory of Great War Island. The activities of in situ and ex situ gene pool conservation have been defined in order to preserve and expand the populations of the above species, as carriers of complex wetland forest ecosystems.

  5. Fingerprint analysis, multi-component quantitation, and antioxidant activity for the quality evaluation of Salvia miltiorrhiza var. alba by high-performance liquid chromatography and chemometrics.

    Science.gov (United States)

    Zhang, Danlu; Duan, Xiaoju; Deng, Shuhong; Nie, Lei; Zang, Hengchang

    2015-10-01

    Salvia miltiorrhiza Bge. var. alba C.Y. Wu and H.W. Li has wide prospects in clinical practice. A useful comprehensive method was developed for the quality evaluation of S. miltiorrhiza var. alba by three quantitative parameters: high-performance liquid chromatography fingerprint, ten-component contents, and antioxidant activity. The established method was validated for linearity, precision, repeatability, stability, and recovery. Principal components analysis and hierarchical clustering analysis were both used to evaluate the quality of the samples from different origins. The results showed that there were category discrepancies in quality of S. miltiorrhiza var. alba samples according to the three quantitative parameters. Multivariate linear regression was adopted to explore the relationship between components and antioxidant activity. Three constituents, namely, danshensu, rosmarinic acid, and salvianolic acid B, significantly correlated with antioxidant activity, and were successfully elucidated by the optimized multivariate linear regression model. The combined use of high-performance liquid chromatography fingerprint analysis, simultaneous multicomponent quantitative analysis, and antioxidant activity for the quality evaluation of S. miltiorrhiza var. alba is a reliable, comprehensive, and promising approach, which might provide a valuable reference for other herbal products in general to improve their quality control.

  6. Evaluation of the Influence of Sulfur-Fumigated Paeoniae Radix Alba on the Quality of Si Wu Tang by Chromatographic and Chemometric Analysis.

    Science.gov (United States)

    Pei, Ke; Cai, Hao; Duan, Yu; Qiao, Feng-Xian; Tu, Si-Cong; Liu, Xiao; Wang, Xiao-Li; Song, Xiao-Qing; Fan, Kai-Lei; Cai, Bao-Chang

    2016-01-01

    An accurate and reliable method of high-performance liquid chromatographic fingerprint combining with multi-ingredient determination was developed and validated to evaluate the influence of sulfur-fumigated Paeoniae Radix Alba on the quality and chemical constituents of Si Wu Tang. Multivariate data analysis including hierarchical cluster analysis and principal component analysis, which integrated with high-performance liquid chromatographic fingerprint and multi-ingredient determination, was employed to evaluate Si Wu Tang in a more objective and scientific way. Interestingly, in this paper, a total of 37 and 36 peaks were marked as common peaks in ten batches of Si Wu Tang containing sun-dried Paeoniae Radix Alba and ten batches of Si Wu Tang containing sulfur-fumigated Paeoniae Radix Alba, respectively, which indicated the changed fingerprint profile of Si Wu Tang when containing sulfur-fumigated herb. Furthermore, the results of simultaneous determination for multiple ingredients showed that the contents of albiflorin and paeoniflorin decreased significantly (P < 0.01) and the contents of gallic acid and Z-ligustilide decreased to some extent at the same time when Si Wu Tang contained sulfur-fumigated Paeoniae Radix Alba. Therefore, sulfur-fumigation processing may have great influence on the quality of Chinese herbal prescription.

  7. A B rief Analysis of Miu Xi-yong's Using Radix Paeoniae Alba to Pacify Liver%缪希雍白芍平肝法浅析

    Institute of Scientific and Technical Information of China (English)

    李晓寅; 陆海峰; 俞欣玮

    2014-01-01

    明代医家缪希雍善用白芍,其白芍平肝法更是独具特色,该方法被广泛运用并贯穿其整个医学理论体系,对后世关于白芍的应用研究产生了极大影响。本文通过其临证用药组进行分析,探讨了其白芍平肝法的具体运用。%Ming dynasty Medical scientist Miu Xi -yong was skillful in using radix paeoniae alba ,and his theory of using radix paeoniae alba to pacify liver was distinctive.Radix paeoniae alba's efficacy of pacifying liver had been widely used and run through his complete medical theory system .It had an enormous impact for later generations .By means of analyzing his art of constructing prescriptions ,this article discussed Miu Xi-yong using radix paeoniae alba to pacify liver .

  8. Atividade Anti-inflamatória e Avaliação da Toxicidade do Extrato Hidroetanólico de Morus alba (Moraceae

    Directory of Open Access Journals (Sweden)

    Camila Bugnotto Pereira

    2013-01-01

    Full Text Available No presente trabalho, avaliou-se a atividade antiinflamatória do extrato hidroetanólico das folhas de Morus alba, através do modelo de indução de tecido granulomatoso e analisaram-se os efeitos toxicológicos sobre o fígado pela dosagem de AST e ALT e sobre o rim, pela dosagem de creatinina. O extrato hidroetanólico das folhas de M. alba foi administrado oralmente, três vezes ao dia, durante 6 dias. A nimesulida (5 mg/kg/dia foi utilizada como controle positivo e o propilenoglicol 20% como controle negativo. Após o tratamento, foi avaliada a formação do granuloma e realizada a dosagem de AST, ALT e creatinina em todos os grupos. Os animais tratados com o extrato de M. alba apresentaram inibição do processo inflamatório de 20,24 ± 6,94%, enquanto que os tratados com controle positivo apresentaram 21,42 ± 6,52%. O extrato hidroetanólico de M. alba demonstrou atividade antiinflamatória semelhante à nimesulida com ausência de indícios de hepatotoxicidade e nefrotoxicidade.

  9. The Nutritive value of mulberry leaves (Morus Alba) and partial replacement of cotton seed in rations on the performance of growing Vietnamese cattle

    NARCIS (Netherlands)

    Vu, C.C.; Verstegen, M.W.A.; Hendriks, W.H.; Pham, K.T.

    2011-01-01

    The in vivo digestibility of mulberry leaves (Morus alba) and the effects of the partial replacement of cotton seed with fresh mulberry leaf in rations on the performance of growing Vietnamese cattle was investigated. For the in vivo digestibility trial, twenty castrated rams of Phanrang breed (a lo

  10. 缪希雍白芍平肝法浅析%A B rief Analysis of Miu Xi-yong's Using Radix Paeoniae Alba to Pacify Liver

    Institute of Scientific and Technical Information of China (English)

    李晓寅; 陆海峰; 俞欣玮

    2014-01-01

    明代医家缪希雍善用白芍,其白芍平肝法更是独具特色,该方法被广泛运用并贯穿其整个医学理论体系,对后世关于白芍的应用研究产生了极大影响。本文通过其临证用药组进行分析,探讨了其白芍平肝法的具体运用。%Ming dynasty Medical scientist Miu Xi -yong was skillful in using radix paeoniae alba ,and his theory of using radix paeoniae alba to pacify liver was distinctive.Radix paeoniae alba's efficacy of pacifying liver had been widely used and run through his complete medical theory system .It had an enormous impact for later generations .By means of analyzing his art of constructing prescriptions ,this article discussed Miu Xi-yong using radix paeoniae alba to pacify liver .

  11. BIOMONITORING HEAVY-METALS USING THE BARN-OWL (TYTO-ALBA-GUTTATA) - SOURCES OF VARIATION ESPECIALLY RELATING TO BODY CONDITION

    NARCIS (Netherlands)

    ESSELINK, H; VANDERGELD, FM; JAGER, LP; POSTHUMATRUMPIE, GA; ZOUN, PEF; BAARS, AJ

    1995-01-01

    The feasibility of using the Barn Owl (Tyto alba guttata) to monitor environmental quality in the Netherlands was investigated, using Cd, Cu, Pb, Mn, and Fe as indicators for environmental contamination. Throughout 1992, bird-watchers, volunteers, and officials submitted 53 birds. The age and geogra

  12. Introduction of beet cyst nematode resistance from Sinapsis alba L. and Raphanus sativus L. into Brassica napus L. (oil-seed rape) through sexual and somatic hybridization.

    NARCIS (Netherlands)

    Lelivelt, C.L.C.

    1993-01-01

    Experiments were performed to select for beet cyst nematode (Heterodera schachtii Schm., abbrev. BCN) resistant genotypes of Brassica napus L. (oilseed rape), and to introduce BCN-resistance from the related species Raphanus sativus L. (oil-radish) and Sinapis alba L. (white mustard) into oil-seed r

  13. Justificación curricular de la asignatura Arquitectura de tierra. Caso: Tamaulipas, México

    Directory of Open Access Journals (Sweden)

    Dora Luisa Roux Oropeza

    2016-08-01

    Full Text Available La globalización y los organismos internacionales hanrevolucionado el funcionamiento de las instituciones de educación superior. Las exigencias actualesimplican, entre otras,la gestión deestudios curriculares bajo paradigmas emergentes que justifiquen programas y planes encaminados a la solución de las problemáticas sociales globales. Tomando como referencia lo anterior, se presentan los resultados del análisis curricular que fundamentó la inclusión de la asignatura Arquitectura de Tierra, en la Facultad de Arquitectura Diseño y Urbanismo en Tamaulipas, México. AbstractGlobalization and international agencies have revolutionized the functioning of institutions of higher education; the requirements to them, involving among others, managing curriculum studies on emerging paradigms that justify programs and planswith responsibility for solving global social problems. With reference to the above, the results of the curriculum analysis that informed the inclusion of the subject Earthen Architecture in the Faculty of Architecture and Urban Design in Tamaulipas, Mexico.

  14. Effectiveness of a developmental curricular design to graduate culturally competent health practitioners.

    Science.gov (United States)

    Boggis, Debra

    2012-01-01

    With the goal to facilitate cultural competency development of students enrolled in graduate-level health professional education, this study examined the effectiveness of a curricular program guided by the Intercultural Developmental Continuum (IDC) as measured by the Intercultural Developmental Inventory (IDI). The IDI was administered to 17 occupational therapy (OT) students and a control group of 25 non-OT health professional students upon matriculation into their respective programs of graduate study and again upon completion of 3 years of study. OT students participated in a cultural curricular design guided by the IDC, while the control group participated in cultural study not guided by the IDC. Though OT students did not show a significant change in overall developmental orientation mean scores from pre-test to post-test (t = 0.847, p = 0.41), the results indicate that the designed intercultural curriculum increased intercultural competence among those OT students who began their program with the monocultural mindset of polarization (an "us vs. them" evaluative viewpoint) and moved to the interculturally transitional mindset of minimization (recognizing cultural commonalities and elimination of the "us vs. them" mindset). The control group showed a significant decrease in developmental orientation mean scores at post-test (t = 6.1, p competency of OT students, appears to have mitigated a decrease in competence. Results suggest that the cultural challenges that students face appear to be considerable and, without targeted, integrated intercultural preparation, can overwhelm new health professionals' intercultural capability. PMID:22968776

  15. Curricular changes in the Geology Department, University of Zimbabwe: towards a more vocational degree

    Science.gov (United States)

    Walsh, Kevin L.

    1999-05-01

    Most students taking Geology at the University of Zimbabwe graduate with a B.Sc. General degree. Formerly, the role of this degree was to produce school teachers and until the early 1990s this was the major area of employment. From 1992, the Geology Department changed its curriculum in an effort to make its graduates more marketable. At the same time, the mining industry was expanding. Within a few years the employment situation for the students had dramatically changed — with over three-quarters of the B.Sc. graduates of the last three years finding employment as earth scientists. Students from all three undergraduate years now have more contact with industry, including a vacation placement scheme. University-based curricular changes have included a greater involvement with computers, the economic geology syllabus has been revised and at third-year level the students are now able to drop their second science subject in favour of three vocationally-orientated courses from other faculties. It remains to be seen how successful these curricular changes are in the longer term, without the benefit of a booming industry, but they should form a good basis for the future. Preliminary indications from the mining industry suggest that B.Sc. General graduates have the potential to succeed in basic geological jobs, such as core logging and sampling, which have previously required an Honours degree as a minimum qualification.

  16. Um novo olhar sobre o sentido de política nos estudos curriculares

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    Débora Raquel Alves Barreiros

    2010-12-01

    Full Text Available A new look at the meaning of policy in curricular studies...AbstractThis study discusses the meaning of policy based on a conception of curriculum and policy as enunciation, articulation/production of meanings. Underscoring the discursive nature as constituting curricular production supports the affirmation that the discourse is not a representation/manifestation of structures that are its basis, but an articulatory process. For that reason, in that study the concept of policy and the conceptions that support its formulations rooted in that understanding are presented, highlighting the contribution of Laclau and Mouffe, after examining central categories – discourse, hegemony and articulatory practices – which, for those authors, outline the perspective of policy defended. In that sense, the process of policy production is seen as an articulatory practice and it is argued that the analyses of curriculum policies are viewed as a conRoteiro,Joaçaba, v. 35, n. 2, p. 231-250, jul./dez. 2010 247Um novo olhar sobre o sentido de política...tingent, conflicting, discursive and dialogical action that enables the subjects to take up positions within the identitary discourses, in a democratic-pluralist universe complete with struggles and negotiations.

  17. Políticas curriculares, Estado e regulação

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    Álvaro Moreira Hypolito

    2010-12-01

    Full Text Available O texto analisa as políticas curriculares desenvolvidas no contexto da globalização e do neoliberalismo que têm orientado as ações do Estado no campo educacional, como forma de regulacão social. Essas políticas produzem efeitos importantes para o campo educacional, com ênfase no currículo, na gestão e no trabalho docente. Por meio de estratégias de avaliação, tipicamente gerencialistas, o Estado tem obtido êxito na padronização curricular, na implantação de políticas de formação docente e na submissão da escola e da educação aos interesses do mercado. Os modos de gestão, insistentemente mostrados como a solução para a educação, chegam às escolas como formas estranhas de administração e a cada dia mais se mostram ineficientes para enfrentar os problemas escolares. Contudo, essas políticas de regulação continuam sendo a tônica das políticas de Estado para a educação.

  18. Enfermagem em saúde indígena: aplicando as diretrizes curriculares

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    Nair Chase da Silva

    2003-08-01

    Full Text Available Relato de experiência do Estágio Curricular II - Internato Rural Indígena, do Curso de Enfermagem, da Escola de Enfermagem de Manaus-Universidade Federal do Amazonas, realizado de outubro a dezembro/2002, oportunizando ao acadêmico: compreender o processo saúde-doença em áreas indígenas e realizar intervenções de enfermagem. O estágio ocorreu em três fases: semana preparatória, envolvendo reuniões e palestras com a equipe que atua em saúde indígena; atuação junto às populações indígenas e seminário/relatório das atividades. Os alunos relataram que a atuação do enfermeiro em comunidades indígenas requer conhecimento antropológico, ecológico e social para compreensão do processo saúde-doença. O estágio proporciona educação emancipatória, contextualizada na realidade regional e atende as recomendações das diretrizes curriculares ao privilegiar o ensino voltado para a realidade local.

  19. Effectiveness of a developmental curricular design to graduate culturally competent health practitioners.

    Science.gov (United States)

    Boggis, Debra

    2012-01-01

    With the goal to facilitate cultural competency development of students enrolled in graduate-level health professional education, this study examined the effectiveness of a curricular program guided by the Intercultural Developmental Continuum (IDC) as measured by the Intercultural Developmental Inventory (IDI). The IDI was administered to 17 occupational therapy (OT) students and a control group of 25 non-OT health professional students upon matriculation into their respective programs of graduate study and again upon completion of 3 years of study. OT students participated in a cultural curricular design guided by the IDC, while the control group participated in cultural study not guided by the IDC. Though OT students did not show a significant change in overall developmental orientation mean scores from pre-test to post-test (t = 0.847, p = 0.41), the results indicate that the designed intercultural curriculum increased intercultural competence among those OT students who began their program with the monocultural mindset of polarization (an "us vs. them" evaluative viewpoint) and moved to the interculturally transitional mindset of minimization (recognizing cultural commonalities and elimination of the "us vs. them" mindset). The control group showed a significant decrease in developmental orientation mean scores at post-test (t = 6.1, p competency of OT students, appears to have mitigated a decrease in competence. Results suggest that the cultural challenges that students face appear to be considerable and, without targeted, integrated intercultural preparation, can overwhelm new health professionals' intercultural capability.

  20. La profesionalización del recurso humano policial. Aspectos curriculares que se deben contemplar

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    María Gabriela Arce Navarro

    2008-01-01

    Full Text Available Este artículo desarrolla una propuesta de organización curricular que garantice el alcance de los objetivos, metas y funciones encomendadas a la Escuela Nacional de Policía, entidad a la que le ha sido conferida la potestad para formar y capacitar a las personas encargadas de velar por la seguridad ciudadana de nuestro país. La propuesta considera elementos aún no establecidos por este centro educativo, aportando avances curriculares significativos para la futura implementación del currículo. Por otro lado, describe los componentes que caracterizan el actual currículo de la Escuela, develando aspectos relevantes sobre la formación y capacitación policial, así como la apertura de esta Institución a los enfoques por competencias laborales, campo en el que incursionó con la implementación del actual Curso Básico Policial por Competencias Laborales.

  1. Adaptation of The Early Childhood Curricular Beliefs Inventory into Turkish: Validity and Reliability Study

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    Sema SOYDAN

    2013-04-01

    Full Text Available The aim of this study is to adapt The Early Childhood Curricular Beliefs Inventory (ECCBI questionnaire into Turkish. The ECCBI is a tool designed for exploring curricular beliefs of pre-service teachers in the area of early childhood education. A subscale named “behavioural approach” is not in the Turkish adaptation of the scale according to expert opinions, three subtests meaning 54 items out of 72 items have been included in the adapted version of scale. After the equivalence test of Turkish form, instrument has been applied to 30 preschool teachers and 200 preservice preschool teachers and total 230 person. In order to test construct validity of Turkish instrument, confirmatory and exploratory factor analysis have been applied; to identify reliability, Cronbach Alpha reliability coefficient, Sperman-Brown formula and Guttmann split-half reliability formula have been employed and corrected item-total correlation has been examined. Results show that this scale is a suitable assessment tool for the pre-service teachers to determine their related beliefs about early childhood approaches.

  2. The Role of Curricular Evolution and the Future of Collegiate Geoscience Education (Invited)

    Science.gov (United States)

    Hodges, K.

    2009-12-01

    Recent economic events have caused many large state universities (and even some private universities) to question the viability of departments that are small in terms of faculty numbers and majors. Many geoscience programs across the country fit into this category, and we increasingly hear of efforts to make geoscience departments more viable by combining them with other academic units to make larger, more cost-effective units. In 2006, Arizona State University launched the School of Earth and Space Exploration in the belief that a community of earth scientists, astronomers, astrophysicists, cosmologists, planetary scientists, and appropriate engineering faculty, without department affiliations, could form a powerful, transdisciplinary unit that would be positioned well to address fundamental and use-inspired research in earth and space science. While this school was not created in response to economic concerns, its success serves as proof that amalgamation of units is not necessarily a bad evolutionary strategy. In fact, the school is finding that transdisciplinary structures provide many new opportunities for curricular evolution. Modular curricula serve an increasingly broadly interested student body extremely well. They make it easy to respond to societal demands of geoscience education because new major concentrations can be added and undersubscribed concentrations can be retired without complete revision of the major curriculum. This presentation will explore some of the rewards and challenges of concentration-based curricular redesign efforts currently underway.

  3. Effects of a curricular revision on learner outcomes in veterinary clinical pathology.

    Science.gov (United States)

    Hollinger, Charlotte; Libarkin, Julie C; Stickle, Julia E; Hauptman, Joe G; Henry, Rebecca; Scott, Michael A

    2013-01-01

    A mixed-methods evaluation was conducted to study learner attitudes and knowledge about clinical pathology across a curricular change that instituted a stand-alone clinical pathology course in place of content within a previously integrated pathology course structure. Groups of pre- and post-change students were assessed three times across the two semesters leading up to graduation. At each time, rank-ordered and open-ended response items probed attitudes, and multiple-choice items assessed knowledge. Data about student clinical pathology performance were also collected from clinical pathology instructors and supervising clinicians. Student rank-ordered items were evaluated by factor analysis; resulting factor-scale scores, multiple-choice scores, and rank responses from study cohorts were statistically assessed between groups and within each group over time. Intraclass correlations were calculated for the coding of student open-ended responses, and all coded responses were compared among groups. Analysis revealed that students in the revised curriculum had greater satisfaction with their training and greater confidence in data interpretation compared to students without exposure to an independent clinical pathology course. Although differences in knowledge of clinical pathology were not detected, it was also apparent that the independent clinical pathology course filled a student-perceived curricular need without raising criticisms related to diminished integration with anatomic pathology. Secondary study outcomes included formative feedback for course improvement, evidence of clerkship efficacy, and baseline data for further studies.

  4. Web-enhanced Curricular Infusion of ESOL Competencies in Initial Teacher Certification Programs

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    Karen Wolz Verkler

    2003-09-01

    Full Text Available As the cultural and linguistic diversity continues to increase in Florida s K-12 public school population, the demand for teachers trained to address their unique needs becomes paramount. Previously a responsibility of Florida s school districts, ESOL(English for Speakers of Other Languages training has been delegated to colleges of education per state mandate. This mandate requires that graduates of initial teacher certification programs in the state s universities demonstrate competency in all of the 25 Florida Performance Standards for Teachers of English for Speakers of Other Languages. In order to satisfy this charge, colleges of education in Florida are following a variety of training models: stand-alone courses, curricular infusion, or a combination of the two. A large, metropolitan university in Central Florida has developed an integrated model consisting of two stand-alone courses, field experience integration of the standards, and curricular infusion of ESOL standards via on-lone modules in methods courses. The authors, who teach methods courses in which such infusion has been recently effected, surveyed their students to obtain feedback regarding the modules, the results of which are discussed in this paper.

  5. Barriers, strategies, and lessons learned from complementary and alternative medicine curricular initiatives.

    Science.gov (United States)

    Sierpina, Victor S; Schneeweiss, Ronald; Frenkel, Moshe A; Bulik, Robert; Maypole, Jack

    2007-10-01

    Fifteen U.S. academic programs were the recipients of a National Center for Complementary and Alternative Medicine R25 Education Grant Program to introduce curricular changes in complementary and alternative medicine (CAM) in their institutions. The authors describe the lessons learned during the implementation of these CAM education initiatives. Principal investigators identified these lessons along with discovered barriers and strategies, both those traditionally related to medical and nursing education and those unique to CAM education. Many lessons, barriers, and strategies were common across multiple institutions. Most significant among the barriers were issues such as the resistance by faculty; the curriculum being perceived as too full; presenting CAM content in an evidence-based and even-handed way; providing useful, reliable resources; and developing teaching and assessment tools. Strategies included integration into existing curriculum; creating increased visibility of the curriculum; placing efforts into faculty development; cultivating and nurturing leadership at all levels in the organization, including among students, faculty, and administration; providing access to CAM-related databases through libraries; and fostering efforts to maintain sustainability of newly established CAM curricular elements through institutionalization and embedment into overall educational activities. These lessons, along with some detail on barriers and strategies, are reported and summarized here with the goal that they will be of practical use to other institutions embarking on new CAM education initiatives. PMID:17895653

  6. Effects ofArtemisia herba-alba essential oils on survival stored cereal pests:Tribolium castaneum (Herbst) (Coleoptera, Tenebrionidae) and Trogoderma granarium (Everst) (Coleoptera, Dermestidae)

    Institute of Scientific and Technical Information of China (English)

    Ben Slimane Badreddine; Mariem Baouindi

    2016-01-01

    Objective:To assess the chemical components and toxicity ofArtemisia herba-alba (A. herba-alba) essential oil against two major stored cereal pests,Tribolium castaneum (T. castaneum) andTrogoderma granarium(T. granarium). Methods:Two bioassay actions were tasted: repellent and fumigant actions against adult and larvae, respectively, to assess the effect ofA. herba-alba essential oil. Results: Gas chromatography-mass spectrometer analyses of the essential oil containedβ-thujone (12.50%),α-thujone (8.78%), sabinyl acetate (8.56%), terpinene-4-ol (8.51%),α-terpineol (3.35%), 1,8-cineol (5.45%),γ-terpene (4.82%), camphor (4.52%), dimethyl-ethylbenzene (3.93%) andα-terpinene (3.35%) as the major components. Fumigant toxicity tests showed thatA. herba-alba oil was more toxic thanT. granarium (LC50 = 2.09 mg/mL, LC90 = 4.12 mg/mL) andT. castaneum (LC50 = 6.39 mg/mL, LC90 = 10.10 mg/mL). Conclusions: This study has highlighted a bioinsecticide activity ofA. herba-alba against two insect pests of stored foodstuffs (T. castaneum andT. granarium). TheArtemisia essential oil offers an interesting potential insecticide that could be studied more deeply to isolate and identify the active substances, to study their physiological impact on other insects.

  7. The anesthetic efficacy of eugenol and the essential oils of Lippia alba and Aloysia triphylla in post-larvae and sub-adults of Litopenaeus vannamei (Crustacea, Penaeidae).

    Science.gov (United States)

    Parodi, Thaylise V; Cunha, Mauro A; Heldwein, Clarissa G; de Souza, Diego M; Martins, Átila Clivea; Garcia, Luciano de O; Wasielesky, Wilson; Monserrat, José María; Schmidt, Denise; Caron, Braulio O; Heinzmann, Berta; Baldisserotto, Bernardo

    2012-04-01

    The aim of this study was to evaluate the anesthesia induction and recovery times of sub-adult and post-larvae white shrimp (Litopenaeus vannamei) that were treated with eugenol and the essential oils (EOs) from Lippia alba and Aloysia triphylla. Oxidative stress parameters in the hemolymph of this species were also analyzed. The concentrations of eugenol, A. triphylla EO and L. alba EO recommended for anesthesia were 200, 300 and 750 μL L(-1) for sub-adults and 175, 300 and 500 μL L(-1) for post-larvae, respectively. The concentrations studied during the transport of sub-adults were between 20 and 50 μL L(-1) eugenol, 20-30 μL L(-1)A. triphylla EO and 50 μL L(-1)L. alba EO. For post-larvae, the optimal concentrations for transport were 20 μL L(-1) eugenol and between 20 and 50 μL L(-1)A. triphylla EO. The white shrimp sub-adults that were exposed to A. triphylla EO (20 μL L(-1)) showed increases in their total antioxidant capacities (150%), catalase (70%) and glutathione-S-transferase (615%) activity after 6 h. L. alba EO (50 μL L(-1)) and eugenol (20 μL L(-1)) also increased GST activity (1292 and 1315%) after 6 h, and eugenol (20 μL L(-1)) decreased the total antioxidant capacity (100%). Moreover, concentrations above 30 μL L(-1) for the EOs of A. triphylla and L. alba and 20 μL L(-1) eugenol were effective at inducing anesthesia and improving the antioxidant system against reactive oxygen species (ROS) after 6 h. PMID:22198554

  8. Effects of the methanolic extracts of Zizyphus spina christi, Olea europaea and Morus alba leaves in Streptozotocin- induced diabetic rats

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    A. I. Othman*, M. A. Amer*, M. Abdel-Mogib **, R. F. Samaha

    2009-12-01

    Full Text Available Background:The present study aims to investigate the hypoglycemic, hypolipidimic and antioxidant effect of the methanolic crude extracts of Zizyphus spina christi, Morus alba and Olea europaea leaves, individually or in combination against diabetes induced rats by Streptozotocin (STZ. Results:Hyperglycemia and hyperlipidaemia except in high density lipoproteins (HDL were observed in serum after 5 weeks of STZ administration. This was associated with a depression in hepatic glutathione (GSH concentration as well as hepatic catalase (CAT, glutathione-s-transferase (GST and superoxide dismutase (SOD activates. In addition hepatic thiobarbituric acid-reactive substance (TBARS and protein carbonyl (PC were significantly elevated, indicating increased lipid and protein oxidation and oxidative stress. Depression in blood hemoglobin (Hb content, serum insulin levels, total antioxidant capacity (TAOC and nitric oxide (NO levels as well as body weight gain were also observed in diabetic rats. Administration of 100mg/kg alcoholic extracts of Zizyphus spina christi, Morus alba and Olea europaea leaves 3 days before and after STZ injection daily for 5 weeks significantly ameliorated the oxidative stress evidenced by lowering TBARS & PC as well as increasing hepatic GSH concentration and CAT, GST and SOD activates as compared with STZ treated rats. These effects were paralleled with marked protection against STZ induced hyperglycemia and disturbance of lipid profile. They also caused a great improvement in insulin levels, TAOC, NO, Hb content and body weight gain. Conclussion:Thus, these results showed that the administration of the crude extracts of either Zizyphus spina christi, Morus alba or Olea europaea leaves individually or in combination might improve the clinical manifestation of diabetes and decrease the oxidative stress, this study supports the beneficial effects of these extracts especially Zizyphus spina christi, which showed marked amelioration

  9. Diretrizes curriculares nacionais para os cursos de nutrição: avanços, lacunas, ambiguidades e perspectivas Curricular guidelines for nutrition courses: advances, ambiguities, omissions and perspectives

    Directory of Open Access Journals (Sweden)

    Nadia Tavares Soares

    2010-10-01

    Full Text Available As orientações curriculares e pedagógicas para a formação do profissional de nutrição receberam influência da dinâmica das transformações do ensino superior no Brasil. Em 2001, o Ministério da Educação instituiu as diretrizes curriculares nacionais para os cursos de graduação da área da saúde, em consonância com a Lei de Diretrizes e Bases da Educação. As diretrizes curriculares conformam uma nova baliza para o ensino em saúde a partir da extinção do currículo mínimo, considerado demasiadamente teórico, rígido e inflexível, não atendendo às exigências particulares de cada região, instituição ou curso, bem como às demandas sociais. As diretrizes curriculares representam ainda o desejo de superação da hegemonia do modelo biomédico e do ensino centrado no professor. O objetivo deste artigo é analisar criticamente os conteúdos das diretrizes curriculares para a graduação em nutrição e refletir sobre avanços, ambiguidades e lacunas, na perspectiva de uma implementação participativa e de avaliações constantes. O texto discute perfil do egresso, competências e habilidades e conteúdos de estudo, apontando para novas discussões sobre o que está proposto, fomentando possíveis cenários para o aperfeiçoamento do processo da formação em nutrição.The curricular and pedagogical guidelines for the formation of dieticians were influenced by the dynamic changes that occurred in higher education in Brazil. In 2001, the Ministry of Education instituted the national curricular guidelines for undergraduate health-related courses, in agreement with the Law of Education Guidelines and Fundamentals. These guidelines represented a new landmark for health-related education since it abolished the minimum curricular requirements, which were considered excessively theoretical and inflexible and did not meet the specific requirements of each region, institution or course, and the social demands. The curricular

  10. Uma hipótese curricular para a formação continuada de professores de Ciências e de Matemática Science and Mathematics teachers' continuing education: a curricular hypothesis

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    Carla Gonçalves Rodrigues

    2010-01-01

    Full Text Available Este artigo relata o desenvolvimento e a análise de uma proposta curricular para a evolução das concepções didático-metodológicas de professores de Ciências e de Matemática do Ensino Básico. Essa proposta desenvolveu-se no contexto do Programa de Pós-Graduação em Educação da Faculdade de Educação da Universidade Federal de Pelotas. Os objetivos, a estrutura curricular e as metodologias de ensino utilizadas foram referenciados pela proposta de formação continuada de professores do Grupo DIE-IRES, da Universidade de Sevilla, Espanha, que tem como meta desejável, a formação de um professor autônomo e investigador de sua ação docente, em um processo no qual os saberes didático-metodológicos e disciplinares são conteúdos relevantes para a complexificação de seu conhecimento profissional e de sua prática pedagógica.This paper describes the development and the analysis of a curricular proposal for basic educational level Science and Mathematics teachers' didactic-methodological conceptions evolution. This curricular proposal was carried out in the context of Pelotas Federal University' School of Education. Objectives, curricular structure, and teaching methodologies were guided by the DIE-IRES Group from the University of Sevilla, Spain, on-going teacher formation proposal, which has, as a desirable goal, the formation of an autonomous and investigative teacher in a process in which his/her didactic, methodological and disciplinary knowledge are considered essential for the complexification of his/her professional knowledge and his/her pedagogical practice.

  11. An Analysis of Irish Pre-School Practice and Pedagogy Using the Early Childhood Environmental Four Curricular Subscales

    Science.gov (United States)

    Neylon, Gerardine

    2014-01-01

    This paper presents the findings of original research which applied the Early Childhood Environmental Rating Scale Extension (ECERS/E) four Curricular Subscales in 26 pre-schools throughout Ireland to measure and assess the provision of literacy, maths, science and environment, and diversity as follows: inadequate, minimal, good or excellent. The…

  12. The Co-Authored Curriculum: High-School Teachers' Reasons for Including Students' Extra-Curricular Interests in Their Teaching

    Science.gov (United States)

    Hagay, Galit; Baram-Tsabari, Ayelet; Peleg, Ran

    2013-01-01

    There is increasing evidence of a gap between curricular requirements and what students actually want to know. One of the factors influencing what is taught in the classroom is teachers' attitudes towards integrating their students' interests. This study investigated what prompts high-school teachers who prepare students for national matriculation…

  13. Does Raising the Bar Level the Playing Field?: Mathematics Curricular Intensification and Inequality in American High Schools, 1982-2004

    Science.gov (United States)

    Domina, Thurston; Saldana, Joshua

    2012-01-01

    Over the past three decades, American high school students' course taking has rapidly intensified. Between 1982 and 2004, for example, the proportion of high school graduates who earned credit in precalculus or calculus more than tripled. In this article, the authors investigate the consequences of mathematics curricular intensification for social…

  14. Ensuring Full Participation in Extra-Curricular Activities for Students Experiencing Homelessness. Best Practices in Homeless Education

    Science.gov (United States)

    National Center for Homeless Education at SERVE, 2010

    2010-01-01

    Extra-curricular school activities, such as sports, music, theater, debate, and clubs, are often a key to engaging children and youth in school. They can provide students with a sense of belonging, stability, pride, and responsibility and strengthen a student's applications for higher education admission and scholarships. Homelessness, however,…

  15. Language in African Education: A Comparative Analysis of the Curricular Elements of School Texts. Occasional Paper No. 2.

    Science.gov (United States)

    Okonkwo, Chuka

    A study of the relationship between the language medium and the content of education is summarized. Language and curricular contents of English and Igbo language texts used in Nigerian primary schools between 1957 and 1976 are examined according to fifteen categories. Research is reviewed which supports the hypothesis that a change from English to…

  16. Ecology and the Environment. Language Arts around the World, Volume V. Cross-Curricular Activities for Grades 4-6.

    Science.gov (United States)

    McAllister, Elizabeth A.; Hildebrand, Joan M.; Ericson, Joann H.

    Suggesting that students in the intermediate grades can explore the world around them and practice valuable skills in spelling, reading, writing, communication, and language, this book presents cross-curricular units designed to integrate language-arts activities into the study of ecology and the environment. The units in the book reach diverse…

  17. Meeting the Curricular Challenges of Inclusive Assessment: The Role of Alignment, Opportunity to Learn, and Student Engagement

    Science.gov (United States)

    Kurz, Alexander; Talapatra, Devadrita; Roach, Andrew T.

    2012-01-01

    Inclusive test-based accountability systems are intended to focus attention on the teaching and learning of important knowledge and skills for students with disabilities. Test score inferences to this end are often based on unverified assumptions of curricular alignment, access, and engagement. Focusing on students with disabilities, we discuss…

  18. Competencies for 2020: Revalidation of the Curricular Competencies of the Emory University Doctor of Physical Therapy Program

    Science.gov (United States)

    Bridges, Patricia H.; Carter, Vincent M.; Phillips, Tami; Chong, Hyun; Conwell, Ryan; Hensley, Brittany; Kimbrell, Alyson; Sigle, Mallory

    2013-01-01

    Background: Transformation in the healthcare environment prompted Emory University's Doctor of Physical Therapy Program (DPT) to revalidate its competency-based education program. The goal was to revalidate the essentialness of its curricular competencies: Provision of Patient Care, Interpersonal Relationships, Teaching and Learning, Research,…

  19. American Geriatrics Society/Association of Directors of Geriatric Academic Programs curricular milestones for graduating geriatric fellows.

    Science.gov (United States)

    Parks, Susan M; Harper, G Michael; Fernandez, Helen; Sauvigne, Karen; Leipzig, Rosanne M

    2014-05-01

    This article describes the curricular milestones for geriatric fellows and the process used to develop them. The curricular milestones were developed to determine what every graduating geriatric fellow should be able to demonstrate to ensure that they will be able to practice effectively and safely in all care settings and with different older adult populations. Three major domains were identified: Caring for the Elderly Patient, Systems-Based Care for Elder Patients, and Geriatric Syndromes. Six hundred thirty-five geriatricians each reviewed and commented on one domain. These geriatricians represented important stakeholder groups: geriatric fellowship program directors; Association of Directors of Geriatric Academic Programs (ADGAP) members, who are primarily geriatric program and fellowship directors; the American Geriatrics Society (AGS) and ADGAP Education Committee; the AGS Teacher's Section; Geriatric Academic Career Award awardees; and through the American Board of Internal Medicine and the American Board of Family Medicine, board-certified geriatricians who spend more than 50% of their time in clinical practice. The AGS and ADGAP boards approved the final set of 76 Geriatric Curricular Milestones, which were posted on the Portal of Geriatric Online Education in December 2012. These curricular milestones are intended to assist geriatric fellowship directors as they develop curricula and assessments to inform program director reporting to the Accreditation Council for Graduate Medical Education in the Next Accreditation System, which begins in July 2014. PMID:24749808

  20. Oatmeal Facials and Sock Wrestling: The Perils and Promises of Extra-Curricular Strategies for "Fixing" Boys' Education

    Science.gov (United States)

    Weaver-Hightower, Marcus B.

    2010-01-01

    Advocates for boys' education have forwarded numerous "fixes" for boys' supposed educational woes, including both academic and non-academic programs and strategies. This article focuses on the lesser-discussed non-academic, extra-curricular means suggested, specifically outdoor education. Using qualitative analysis of an Australian school's…

  1. Agricultural Science and Technology Teachers' Perceptions of iPod and Mp3 Technology Integration into Curricular and Cocurricular Activities

    Science.gov (United States)

    Murphrey, Theresa Pesl; Miller, Kimberly A.; Roberts, T. Grady

    2009-01-01

    The purpose of this study was to describe agricultural science and technology teachers' reaction to iPod and mp3 technology use and potential use in both curricular and cocurricular activities. A total of 112 unique respondents provided written responses to open-ended questions. Study findings reveal that agricultural science and technology…

  2. Reforma do Ensino supeiror: Diretrizes curriculares em Educação Física

    Directory of Open Access Journals (Sweden)

    2006-11-01

    Full Text Available Neste texto tecemos algumas considerações sobre o contexto em que ocorrem os debates acerca das Diretrizes Curriculares para o ensino superior brasileiro, especialmente aquelas referentes à área de Educação Física. Sugerimos que as Diretrizes Curriculares de Educação Física, formuladas pela comissão de especialistas, designada pelo MEC, têm sido referenciadas em confronto com as perspectivas apontada para a universidade brasileira atualmente, em particular para a formação de professores. Relatamos as contribuições da FEF/UFG para este debate, bem como justificamos os pontos essenciais de um documento anterior, não publicado, em que se apresentam posições sobre currículo e formação de professores de Educação Física na atualidade. Basicamente nos opomos aos projetos do Banco Mundial, FMI e MEC/FHC e seus interesses mercadológicos e de preparação restrita para ao mercado de trabalho, por entendermos que a formação de professores deve ocorrer no âmbito da universidade pública, gratuita e de qualidade social, e onde demandas sociais relevantes se constituam no maior foco de interesse. PALAVRAS-CHAVE: Educação Física, Diretrizes Curriculares, formação de professores. In this paper e make considerations about the curriculum diretrixes for universities, mainly those related to Physical Education. We believe that the diretrixes, established by a commission of experts, need discussion. We oppose to Worsd-Wide Bank, IMF and MEC due to their merchandising interests. We understand that the formation of teachers needs to take place in a public, free and socially qualified university. This paper also presents FEF’s contrubutions to this discussion, extracted from a document (not published yet. Our points of view concerning curriculum and tracher’s graduation are discussed in detail.

  3. Oficina acadêmica: bases curriculares e Medicina de Família e Comunidade

    Directory of Open Access Journals (Sweden)

    Phelipe Antônio Calixto

    2012-12-01

    Full Text Available De acordo com as Novas Diretrizes Curriculares Nacionais da Graduação Médica (NDCN e sua orientação para uma postura crítica e reflexiva do acadêmico realizou-se a oficina “Bases curriculares e Medicina de Família e Comunidade” durante o IV Congresso Mineiro de Medicina de Família e Comunidade (IVCMMFC, em Belo Horizonte - MG, 12 de junho de 2009. A oficina tratou sobre a inserção da especialidade, Medicina de Família e Comunidade (MFC, na graduação, discutindo os métodos de ensino médico: Aprendizado baseado em problematização (PBL, método integrado de ensino e método tradicional Flexneriano. A oficina foi dividida em três momentos. Primeiramente, foi proposta adequação de algumas definições da literatura médica: Atenção Primária à Saúde, Médico generalista, Médico sanitarista, Especialista em Clínica Médica e Médico de Família e Comunidade. Após, foram discutidas as Novas diretrizes curriculares; o Relatório Flexner e sua influência nos modelos de ensino existentes (tradicional, problematizado e integrado, o momento oportuno para inserção da MFC na graduação e qual método de ensino utilizar. O tema do preconceito contra a especialidade surgiu nas discussões, assim como adequação da MFC e níveis de serviço (primário, secundário e terciário e como valorizar a especialidade sem ¨super-especializar¨ o estudante. As conclusões levantadas na oficina foram descritas neste documento e apresentadas em plenária ao final do congresso.

  4. Dissipation kinetics of alpha-cypermethrin and lambda-cyhalothrin residues in aboveground part of white mustard (Sinapis alba L.).

    Science.gov (United States)

    Słowik-Borowiec, Magdalena

    2016-09-01

    Dissipation of simultaneously applied insecticides alpha-cypermethrin and lambda-cyhalothrin was studied in a minor crop, aboveground part of white mustard (Sinapis alba L.). A validated gas chromatographic method (GC-ECD/NPD) was used to determine insecticide residues. Analytical performances were very satisfactory, with expanded uncertainties not higher than 14% (coverage factor k = 2, confidence level 95%). Dissipation of alpha-cypermethrin and lambda-cyhalothrin in white mustard followed first-order kinetics (R(2) between 0.953 and 0.995), with half-lives of 3.1-4.6 and 2.9-3.7 days respectively. Based on the results of this two-year study and the relevant residue regulation, alpha-cypermethrin and lambda-cyhalothrin treatments can be considered safe for crop protection, feeding animals and the environment. PMID:27229135

  5. Accumulation of Rutin and Betulinic Acid and Expression of Phenylpropanoid and Triterpenoid Biosynthetic Genes in Mulberry (Morus alba L.).

    Science.gov (United States)

    Zhao, Shicheng; Park, Chang Ha; Li, Xiaohua; Kim, Yeon Bok; Yang, Jingli; Sung, Gyoo Byung; Park, Nam Il; Kim, Soonok; Park, Sang Un

    2015-09-30

    Mulberry (Morus alba L.) is used in traditional Chinese medicine and is the sole food source of the silkworm. Here, 21 cDNAs encoding phenylpropanoid biosynthetic genes and 21 cDNAs encoding triterpene biosynthetic genes were isolated from mulberry. The expression levels of genes involved in these biosynthetic pathways and the accumulation of rutin, betulin, and betulinic acid, important secondary metabolites, were investigated in different plant organs. Most phenylpropanoid and triterpene biosynthetic genes were highly expressed in leaves and/or fruit, and most genes were downregulated during fruit ripening. The accumulation of rutin was more than fivefold higher in leaves than in other organs, and higher levels of betulin and betulinic acid were found in roots and leaves than in fruit. By comparing the contents of these compounds with gene expression levels, we speculate that MaUGT78D1 and MaLUS play important regulatory roles in the rutin and betulin biosynthetic pathways.

  6. Dissipation kinetics of alpha-cypermethrin and lambda-cyhalothrin residues in aboveground part of white mustard (Sinapis alba L.).

    Science.gov (United States)

    Słowik-Borowiec, Magdalena

    2016-09-01

    Dissipation of simultaneously applied insecticides alpha-cypermethrin and lambda-cyhalothrin was studied in a minor crop, aboveground part of white mustard (Sinapis alba L.). A validated gas chromatographic method (GC-ECD/NPD) was used to determine insecticide residues. Analytical performances were very satisfactory, with expanded uncertainties not higher than 14% (coverage factor k = 2, confidence level 95%). Dissipation of alpha-cypermethrin and lambda-cyhalothrin in white mustard followed first-order kinetics (R(2) between 0.953 and 0.995), with half-lives of 3.1-4.6 and 2.9-3.7 days respectively. Based on the results of this two-year study and the relevant residue regulation, alpha-cypermethrin and lambda-cyhalothrin treatments can be considered safe for crop protection, feeding animals and the environment.

  7. The influence of climate and soil properties on calcium nutrition and vitality of silver fir (Abies alba Mill.).

    Science.gov (United States)

    Potocić, Nenad; Cosić, Tomislav; Pilas, Ivan

    2005-10-01

    As a part of a broader research into the nutrition of silver fir (Abies alba Mill.), the variation of calcium concentrations was investigated in needles and soil in two subsequent, climatologically diverse years. Statistically significant differences between plots were determined in Ca concentrations in soils. Concentrations of Ca in needles were statistically different regarding plot, defoliation class, sampling date within the same year and also between years. Fir trees on acid-rock based soils had lower, often inadequate concentrations of Ca in needles; the opposite was true for trees growing on Ca-rich soils. Trees of lower vitality generally exhibited poor Ca nutrition. Drought in the second year of research caused poor absorption of Ca on all plots and in all defoliation classes, but the combined influence of climate and soil properties affected especially trees of low vitality on acid-rock based soils. PMID:16005770

  8. Draft genome sequence of Mameliella alba strain UMTAT08 isolated from clonal culture of toxic dinoflagellate Alexandrium tamiyavanichii.

    Science.gov (United States)

    Danish-Daniel, Muhd; Han Ming, Gan; Noor, Mohd Ezhar Mohd; Yeong, Yik Sung; Usup, Gires

    2016-12-01

    Mameliella alba strain UMTAT08 was isolated from clonal culture of paralytic shellfish toxin producing dinoflagellate, Alexandrium tamiyavanichii. Genome of the strain UMTAT08 was sequenced in order to gain insights into the dinoflagellate-bacteria interactions. The draft genome sequence of strain UMTAT08 contains 5.84Mbp with an estimated G + C content of 65%, 5717 open reading frames, 5 rRNAs and 49 tRNAs. It contains genes related to nutrients uptake, quorum sensing and environmental tolerance related genes. Gene clusters for the biosynthesis of type 1 polyketide synthase, bacteriocin, microcin, terpene and ectoine were also identified. This is suggesting that the bacterium possesses diverse adaptation strategy to survive within the dinoflagellate phycosphere. The draft genome sequence and annotation have been deposited at DDBJ/EMBL/GenBank under the accession number JSUQ00000000. PMID:27625991

  9. 植物桑的药理研究进展%Advances in the pharmacological study of Morus alba L.

    Institute of Scientific and Technical Information of China (English)

    杨爽; 王宝莲; 李燕

    2014-01-01

    桑(Morus albaL.)为桑科(Moraceae)桑属(Morus)落叶乔木,其叶、枝、根(皮)和果均为中国传统中药.桑的药理活性成分主要包括黄酮类、生物碱类、甾类及香豆素类化合物等,具有降血糖、降血脂、降血压、抗氧化、抗炎、抗菌、抗肿瘤和免疫调节等药理活性.本文对桑及其主要成分的药理活性、药代动力学以及基于细胞色素P450和转运蛋白的药物相互作用进行综述.

  10. The essential oil of Lippia alba: analysis of samples from French overseas departments and review of previous works.

    Science.gov (United States)

    Hennebelle, Thierry; Sahpaz, Sevser; Dermont, Charles; Joseph, Henry; Bailleul, François

    2006-10-01

    This paper contains new data on the chemical composition of the essential oil of Lippia alba (Mill.) N. E. Brown, as well as an overview of the available literature. Although the composition of the essential oil of this species is well-documented, discrepancies between the reported results suggest that many chemotypes and morphotypes exist. The analysis of essential oils obtained from the leaves of samples from three different locations in the French Overseas Departments (French Guiana, Martinique, and two different places in Guadeloupe) have shown that the composition of each one is quite different. This new data, along with a review and discussion of published studies, enabled us to establish seven distinct chemotypes. Possible connections between these chemotypes and morphotypes already described were also investigated. PMID:17193226

  11. A novel polysaccharide isolated from mulberry fruits (Murus alba L.) and its selenide derivative: structural characterization and biological activities.

    Science.gov (United States)

    Chen, Chun; Zhang, Bin; Fu, Xiong; Liu, Rui Hai

    2016-06-15

    A novel polysaccharide (MFP3P) was isolated from Murus alba L. through the hot water extraction method followed by chromatographic purification. The chemical structure of MFP3P was elucidated by acid hydrolysis, Smith degradation and methylation analysis, along with FT-IR, GC-MS, (1)H and (13)C NMR spectroscopy. Its morphological properties were further characterized by SEM and AFM. The selenide of the polysaccharide (MFP3P-Se) was obtained by the Na2SeO3/BaCl2 method. The antioxidant properties showed that MFP3P-Se exhibited higher peroxy radical-scavenging capacity than MFP3P in vitro. Moreover, MFP3P-Se had more significant hypoglycemic effects than MFP3P through promoting pancreatic cell proliferation and increasing glucose metabolism and insulin secretion. PMID:27241036

  12. El diario de viaje de José María Gutiérrez de Alba

    Directory of Open Access Journals (Sweden)

    Martha Jeanet Sierra Díaz

    2015-05-01

    Full Text Available Entre las recientes adquisiciones de la Biblioteca Luis Ángel Arango se destaca el diario manuscrito Impresiones de un viaje a América (1870-1884 de José María Gutiérrez de Alba, que constituye la obra de viajes por Colombia más extensa y rica en ilustraciones conocida hasta la fecha y la cual estará a disposición de los investigadores para su consulta en la Sala de Libros Raros y Manuscritos de la Biblioteca. Asimismo, dado que ya se realizó su digitalización, próximamente se podrá consultar en línea.

  13. Physical and chemical data collected from bottle casts in the Pacific Ocean and the Southern Oceans from ALBA and other platforms from 18 November 1962 to 04 May 1990 (NODC Accession 0000413)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Physical and chemical data were collected using bottle casts in the Pacific Ocean and the Southern Oceans from ALBA, LIRA, TAMGA and other platforms from 18...

  14. The effect of Morus alba leaves extract and powder on resistin levels and liver transaminase enzymes activities in diabetes.

    Science.gov (United States)

    Salemi, Z; Barzin Tond, S; Fallah, S; Shojaii, A; Seifi, M

    2016-01-01

    The current study was designed to investigate the changes of the resistin, aspartate aminotransferase (AST), alanine aminotransferase (ALT) levels of diabetic rats after treatment with Morus alba leaves flavonoid extract (MLE) and Morus alba leaves powder (MLP). Thirty male wistar rats in five groups including control and diabetic groups were included. Diabetic groups consisted of diabetic control, sham and treated group with MLE and MLP. Type 2 diabetes was induced in rats by administration of streptozotocin (STZ) and - nicotinamide. The serum concentrations of resistin and insulin in the study groups were identified by ELISA. ALT and AST activities were assayed by spectrophotometer. For the first time, it was shown that the uptake of MLE and MLP by diabetic rats could significantly decrease the serum fasting blood sugar (FBS), resistin levels and enzymes activity of ALT and AST and increases the concentration of serum insulin significantly (P<0.05). in comparison with the sham group and diabetic control. The results showed that there was no significant difference between the anti-diabetic and inflammatory properties of MLE and MLP. In this study, the possible protective effect of MLE and MLP administration was evaluated against destructive effect of STZ on liver and pancreas function in diabetic rats. The results showed that these effects may play an important role in the regulating of adipokines secretion such as resistin and insulin secretion which are involved in the control of diabetes and obesity. MLE and MLP treatment could be useful agents in combination with other therapies in diabetes improvement. PMID:27262814

  15. Biological synthesis and characterization of silver nanoparticles using Eclipta alba leaf extract and evaluation of its cytotoxic and antimicrobial potential

    Indian Academy of Sciences (India)

    Paramasivam Premasudha; Mudili Venkataramana; Marriappan Abirami; Periyasamy Vanathi; Kadirvelu Krishna; Ramasamy Rajendran

    2015-08-01

    With increasing global competitions there is a growing need to develop environmentally benevolent nanoparticles without the use of toxic chemicals. The biosynthesis of silver nanoparticles (AgNPs) using plant extracts became one of the potential areas of research. The bioreduction of metal ion is quite rapid, readily perform at room temperature and easily scale up. The present study describes a rapid and eco-friendly synthesis of AgNPs using Eclipta alba plant extract in a single pot process. The efficiency and the influence of various process variables in the biosynthesis of AgNPs analysed include redundant concentration, temperature and time. AgNPs were rapidly synthesized using aqueous leaf extract of E. alba and was observed when the medium turned to brown colour with the addition of silver ion. Biosynthesized AgNPs were characterized by the help of UV–visible spectroscopy for their stability and physicochemical parameters were studied by dynamic light scattering, Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy. The obtained results confirmed that recorded UV spectra show the characteristic surface plasmon resonance band for AgNPs in the range of 400–440 nm and physiochemical structural analysis shown that obtained AgNPs were crystalline in nature. Further, cytotoxic and antimicrobial activities of biosynthesized AgNPs against RAW 254.7, MCF-7 and Caco-2 cells as well as Gram positive and Gram negative bacteria were assessed. In-vitro cytotoxicity activity of characterized AgNPs against tested cell lines showed significant anti-cell-proliferation effect in nanomolar concentrations. The antibacterial activity of synthesized AgNPs showed effective inhibitory activity against human pathogens, including, Escherichia coli, Staphylococcus aureus and Pseudomonas aeruginosa. Thus, the significant outcome of this study would help to formulate value added herbal-based nano-materials in biomedical and nanotechnology industries.

  16. Mammal prey of the Barn Owl (Tyto alba in Parque Luro Reserve, La Pampa, Argentina

    Directory of Open Access Journals (Sweden)

    Sergio Tiranti

    1994-05-01

    Full Text Available Abstract The diet of the barn owl was studied through the analysis of pellets obtained in various sites within the Parque Luro reserve, located in an area of xerophyte Caldén forests. The study of 1241 prey items revealed a high dominance of the cricetid rodents Calomys sp., Akodon molinae and Eligmodontia typus, followed by other 8 species of rodents, one species of marsupial and undetermined birds and anuran amphibians. For comparing the diets from a relatively undisturbed forested area (Parque Luro and a deforested site, two subcollections of pellets were analyzed. Differences in FNB values and in the prevalence and composition of prey assemblages were observed between these areas. Riassunto Mammiferi predati dal Barbagianni (Tyto alba nella Riserva Parque Luro, La Pampa, Argentina - La dieta del Barbagianni (Tyto alba è stata studiata attraverso l'analisi delle borre ottenute in varie località all'interno della riserva Parque Luro, situata in un'area con boschi xerofili a Prosopis caldenia. Lo studio di 1241 campioni ha rivelato un'elevata prevalenza di roditori cricetidi Calomys sp., Akodon molinae and Eligmodontia typus, seguiti da altre 8 specie di roditori, una specie di marsupiali e uccelli e anfibi anuri indeterminati. Per il confronto delle diete sono state analizzate due sub-raccolte di borre di rapaci provenienti da un'area boscata relativamente indisturbata e da un sito disboscato. In queste aree sono state osservate differenze nei valori della FNB e nella prevalenza e composizione delle prede.

  17. RESPUESTAS FENOTÍPICAS DE Lippia alba Y Lippia origanoides (VERBENACEAE A LA DISPONIBILIDAD DE AGUA EN EL SUELO

    Directory of Open Access Journals (Sweden)

    Camargo Parra Andres Alejandro

    2008-12-01

    Full Text Available La capacidad de un genotipo particular de producir diferentes fenotipos es conocido como plasticidad fenotípica (PF. Este trabajo evaluó la PF a través de la ontogenia vegetativa en dos especies de la familia Verbenaceae, Lippia alba ampliamente distribuida en habitats favorables y Lippia origanoides ampliamente distribuida en habitats con bajo disponibilidad de recursos. Se evaluó si la PF está correlacionada con distribución ecologica, en respuesta al contenido relativo de agua en el suelo. Se distribuyeron aleatoriamente 40 plantas por tratamiento en tres tratamientos que variaron en la disponibilidad de agua en el suelo, evaluando distintos caracteres morfológicos y de asignación de biomasa, los resultados demuestran una falta de asociación entre PF y distribución ecología. Se observó una mayor PF en L. alba en la etapa temprana de la ontogenia vegetativa, demostrando que la PF a través de la ontogenia vegetativa no se presenta de forma uniforme, la amplia distribución ecológica de esta especie se explica por una mayor PF y asignación de biomasa en los diferentes componentes de la tasa de crecimiento relativa (RGR, ya que estos pueden ser ventajosos para alcanzar una rápida madurez sexual y colonizar nuevos hábitats con condiciones favorables. Contrario a nuestra hipótesis L. origanoides presentó una mayor PF durante la ontogenia vegetativa, los resultados demuestran una posible estrategia de tolerancia al estrés que le permite un bajo desempeño en el RGR en habitats con baja disponibilidad de recursos.

  18. Using Federally Funded Curricular Materials to meet Next Geneartion Science Standards in Earth System Science

    Science.gov (United States)

    McAuliffe, C.

    2015-12-01

    The Next Generation Science Standards (NGSS) describe teaching and learning goals for Earth system science at all levels of K-12, including elementary, middle school, and high school. Teachers must consider science and engineering practices, cross-cutting concepts, and disciplinary core ideas. The National Science Foundation and other federal organizations have supported the development of reformed curricular materials at the K-12 level for many years. Although developed before the adoption of NGSS, many of these Earth system science resources are, in fact, NGSS congruent. Such resources include those developed by TERC, SERC, EDC, NASA, NOAA, USGS, and others. This session features NGSS congruent materials, carefully examining and dissecting the performance expectations that embody these materials. It also shares a process of tagging these materials via NSTA's, NGSS portal guidelines.

  19. New models of dental education and curricular change: their potential impact on dental education.

    Science.gov (United States)

    Pyle, Marsha A

    2012-01-01

    The collective body of work over the last seventy-five years in the Journal of Dental Education has chronicled the ongoing critical issues and trends in dental education. The evolution of the curriculum has run in fits and starts across the twentieth century and into the twenty-first. Today, there has been a resurgence in the introspective work of the profession to examine what is taught, how it is taught, in what sequence it is taught, and the context relating dental education to other health professions and the global reach of the educational and professional environment. In the context of contemporary times, individual as well as organizational leadership has refocused the educational environment from teaching to learning. This article discusses the types of curricular changes documented in the Journal of Dental Education. PMID:22262553

  20. Fundamentos curriculares para una maestría en producción audiovisual

    Directory of Open Access Journals (Sweden)

    Maria Alvarado, Nerio Vílchez

    2008-01-01

    Full Text Available El estudio de los fundamentos curriculares para una maestría en producción audiovisual se apoya en Vílchez (2005, Postner (2001, Maldonado (2001, Boluda (2005, Tünnermann (2005, Miranda (2003, Morles (2005, Vaughan (2000, entre otros. La investigación es aplicada, descriptiva, con un diseño no experimental, ransaccional descriptivo, de campo. A la población constituida por diez (10 directivos de las universidades de Maracaibo, que ofrecen Carreras de Comunicación Social en pregrado, así como también que ofrezcan estudios de postgrado y cinco (5 expertos en currículo.