Frequency upconversion in Er3+-doped fluoroindate glasses pumped at 1.48 μm

We report on efficient frequency upconversion in Er3+-doped fluoroindate glass. The process is observed under 1.48 μm laser diode excitation and results in fluorescence generation in the range from ultraviolet to near-infrared radiation. The study was performed for samples containing 1, 2, and 3 ErF3 mol % in the range of temperatures from 24 to 448 K. The upconverted signals were studied as a function of the laser intensity, and their dynamical behavior is described using a rate equation model which allows us to obtain the energy transfer rates between Er3+ ions in pairs and triads.

La mortalidad en la República Argentina según tablas de vida de 1914, 1946-48 y 1959-61

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La mortalidad de la República Argentina según tablas de vida de 1914, 1946-48 y 1959-61

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Resoluciones aprobadas por el Consejo Económico y Social (47, 48 y 49 períodos de sesiones) y por la Asamblea General (24 y 25 períodos de sesiones) = Resolutions adopted by the Economic and Social Council (47, 48 and 49 sessions) and by the General Assembly (24 and 25 session)

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Evolução de pacientes com AIDS pós cART: Evolução clínica e laboratorial de pacientes com AIDS após 48 semanas de tratamento antirretroviral

Combination Antiretroviral Therapy (cART) aims to inhibit viral replication, delay immunodeficiency progression and improve survival in AIDS patients. The objective of this study was to compare two different schemes of cART, based on plasma viral load (VL) and CD4+ T lymphocyte count, during 48 weeks of treatment. For this purpose, 472 medical charts of a Specialized Outpatient Service were reviewed from 1998 to 2005. Out of these, 58 AIDS patients who had received a triple drug scheme as the initial treatment were included in the study and two groups were formed: Group 1 (G1): 47 individuals treated with two nucleoside reverse-transcriptase inhibitors (NRTI) and one non-nucleoside reverse-transcriptase inhibitor; Group 2 (G2): 11 patients treated with two NRTI and one protease inhibitor. In G1 and G2, 53.2% and 81.8% respectively were patients with an AIDS-defining disease. The T CD4+ lymphocyte count increased progressively up until the 24th week of treatment in all patients, while VL became undetectable in 68.1% of G1 and in 63.6% of G2. The study concluded that the evolutions of laboratory tests were similar in the two treatment groups and that both presented a favorable clinical evolution.

Utilização de Saccharomyces cerevisiae imobilizada em bagaço de cana de açúcar para a biossorção e biodegradação do corante acid black 48

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação da presença de lesões de cárie dentária, biofilme bacteriano visível e análise microbiológica de Streptococcus grupo mutans em crianças de 12 a 48 meses de idade, portadoras e não portadoras da Síndrome de Down

Pós-graduação em Odontologia - FOAR

Determinação dos níveis sangüíneos de frutose em recém-nascidos de termo com pesos adequados para a idade gestacional com 48 horas de vida

Pós-graduação em Pediatria - FMB

ECLAC Notes Nº 48

International Trade from the Region Continues to Grow in 2006-2007 China and India: New Opportunities for Latin American Exports Op-ed by ECLAC's Executive Secretary, José Luis Machinea: ECLAC Urges Deepening of Regional Integration Highlights. Five Ways to Improve Poverty Programmes from a Social Capital Approach Indicators Women and Employment: Reform of the Health Sector in Argentina Recent Titles Calendar

Notas de la CEPAL Nº 48

Comercio internacional de América Latina y el Caribe seguirá creciendo en el bienio 2006-2007 China e India: una gran oportunidad para las exportaciones de América Latina Columna de opinión de José Luis Machinea, Secretario Ejecutivo de la CEPAL: La CEPAL propone profundizar la integración regional Pprecisiones: Cinco propuestas para mejorar los programas de pobreza desde el enfoque de capital social Indicadores Mujer y empleo: la reforma de la salud en Argentina Publicaciones recientes Calendario