Neutron activation analysis of wheat samples

The deficiency of essential micronutrients and excess of toxic metals in cereals, an important food items for human nutrition, can cause public health risk. Therefore, before their consumption and adoption of soil supplementation, concentrations of essential micronutrients and metals in cereals should be monitored. This study collected soil and two varieties of wheat samples���Triticum aestivum L. (Jord��o/bread wheat), and Triticum durum L. (Marialva/durum wheat) from Elvas area, Portugal and analyzed concentrations of As, Cr, Co, Fe, K, Na, Rb and Zn using Instrumental Neutron Activation Analysis (INAA) to focus on the risk of adverse public health issues. The low variability and moderate concentrations of metals in soils indicated a lower significant effect of environmental input on metal concentrations in agricultural soils. The Cr and Fe concentrations in soils that ranged from 93���117 and 26,400���31,300 mg/kg, respectively, were relatively high, but Zn concentration was very low (below detection limit <22 mg/kg) indicating that soils should be supplemented with Zn during cultivation. The concentrations of metals in roots and straw of both varieties of wheat decreased in the order of K>Fe>Na>Zn>Cr>Rb>As>Co. Concentrations of As, Co and Cr in root, straw and spike of both varieties were higher than the permissible limits with exception of a few samples. The concentrations of Zn in root, straw and spike were relatively low (4���30 mg/kg) indicating the deficiency of an essential micronutrient Zn in wheat cultivated in Portugal. The elemental transfer from soil to plant decreases with increasing growth of the plant. The concentrations of various metals in different parts of wheat followed the order: Root>Straw>Spike. A few root, straw and spike samples showed enrichment of metals, but the majority of the samples showed no enrichment. Potassium is enriched in all samples of root, straw and spike for both varieties of wheat. Relatively to the seed used for cultivation, Jord��o presented higher transfer coefficients than Marialva, in particular for Co, Fe, and Na. The Jord��o and Marialva cultivars accumulated not statistically significant different concentrations of different metals. The advantages of using INAA are the multielementality, low detection limits and use of solid samples (no need of digestion).

Reabilita����o no internamento hospitalar: prospectiva na din��mica de actores - Implementa����o da governa����o cl��nica num hospital E.P.E.

Mestrado em Interven����o S��cio-Organizacional na Sa��de - ��rea de especializa����o: Pol��ticas de Administra����o e Gest��o de Servi��os de Sa��de.

Probing the scalar-pseudoscalar mixing in the 125 GeV Higgs particle with current data

LHC has found hints for a Higgs particle of 125 GeV. We investigate the possibility that such a particle is a mixture of scalar and pseudoscalar states. For definiteness, we concentrate on a two-Higgs doublet model with explicit CP violation and soft Z(2) violation. Including all Higgs production mechanisms, we determine the current constraints obtained by comparing h -> yy with h -> VV*, and comment on the information which can be gained by measurements of h -> b (b) over bar. We find bounds vertical bar s(2)vertical bar less than or similar to 0.83 at one sigma, where vertical bar s(2)vertical bar = 0 (vertical bar s(2)vertical bar = 1) corresponds to a pure scalar (pure pseudoscalar) state.

Meios de comunica����o como instrumentos de inser����o da comunidade cabo-verdiana na sociedade de acolhimento: o caso da ��rea metropolitana de Lisboa

Disserta����o apresentada �� Escola Superior de Comunica����o Social como parte dos requisitos para obten����o de grau de mestre em Jornalismo.

Remistura de v��deo: um estudo explorat��rio de diferentes estilos

Disserta����o apresentada �� Escola Superior de Comunica����o Social como parte dos requisitos para obten����o de grau de mestre em Audiovisual e Multim��dia.

Space is a doubt: pr��sence et ambiance v��cue

Cet article se propose r��fl��chir �� la pr��sence cr��atrice du performer depuis la notion d���ambiance du chor��ographe japonais Y. Amagatzu. La notion d���ambiance est d��crite par Yoshio Amagatzu comme une spatialit�� ��mergente de la rencontre des sujets ��� performers et public ��� dans l���espace performatif ; une spatialit�� sensible exprimant le potentiel de cette rencontre avec une �� force orientatrice �� sp��cifique. Mon approche s���int��resse en particulier aux conditions d���accordage (attunement) du performer au potentiel de cette spatialit�� ��mergente et aux effets de cette �� adh��rence perceptive�� sur sa pr��sence cr��atrice. Une approche qui m���a men�� �� ��tendre la notion de mouvement �� l���espace de la relation performative, au del�� des contours visibles du corps physique.

A vis��o e a voz do diretor: a constru����o do seu projeto de Interven����o

Disserta����o apresentada para obten����o do grau de Mestre em Ci��ncias da Educa����o - ��rea de especializa����o em Administra����o Escolar

Um tango com Gardel

Disserta����o submetida �� Escola Superior de Teatro e Cinema para cumprimento dos requisitos necess��rios �� obten����o do grau de Mestre em Teatro - especializa����o em Artes Performativas ��� vertente Teatro-M��sica.