937 resultados para Tea.


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A Work Project, presented as part of the requirements for the Award of a Masters Degree in Management from the NOVA – School of Business and Economics

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BACKGROUND: Only a few studies have explored the relation between coffee and tea intake and head and neck cancers, with inconsistent results. METHODS: We pooled individual-level data from nine case-control studies of head and neck cancers, including 5,139 cases and 9,028 controls. Logistic regression was used to estimate odds ratios (OR) and 95% confidence intervals (95% CI), adjusting for potential confounders. RESULTS: Caffeinated coffee intake was inversely related with the risk of cancer of the oral cavity and pharynx: the ORs were 0.96 (95% CI, 0.94-0.98) for an increment of 1 cup per day and 0.61 (95% CI, 0.47-0.80) in drinkers of >4 cups per day versus nondrinkers. This latter estimate was consistent for different anatomic sites (OR, 0.46; 95% CI, 0.30-0.71 for oral cavity; OR, 0.58; 95% CI, 0.41-0.82 for oropharynx/hypopharynx; and OR, 0.61; 95% CI, 0.37-1.01 for oral cavity/pharynx not otherwise specified) and across strata of selected covariates. No association of caffeinated coffee drinking was found with laryngeal cancer (OR, 0.96; 95% CI, 0.64-1.45 in drinkers of >4 cups per day versus nondrinkers). Data on decaffeinated coffee were too sparse for detailed analysis, but indicated no increased risk. Tea intake was not associated with head and neck cancer risk (OR, 0.99; 95% CI, 0.89-1.11 for drinkers versus nondrinkers). CONCLUSIONS: This pooled analysis of case-control studies supports the hypothesis of an inverse association between caffeinated coffee drinking and risk of cancer of the oral cavity and pharynx. IMPACT: Given widespread use of coffee and the relatively high incidence and low survival of head and neck cancers, the observed inverse association may have appreciable public health relevance.

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Halftone photographic postcard showing the Mary Louise Tea Room, in the Barker Brothers Department Store in downtown Los Angeles, California. The tea room was run by Dolla Harris, sister of C. C. Chapman.

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Some cross-sectional and prospective studies have demonstrated a positive correlation between habitual tea consumption and bone mineral density in post-menopausal women. Rooibos tea contains no caffeine and is a rich source of flavonoids such as rutin, orientin, hyperoside and luteolin. These flavonoids have similar structures to estradiol, and therefore may act as estrogen mimics to promote favourable outcomes in bone. The overall objective of this research was to identify flavonoids that could enhance mineral content in human osteoblast Saos2 cells. Mineral was quantified by alizarin red staining and characterized by quantifying alkaline phosphatase (ALP) activity, cell mitochondria activity and toxicity, in addition to changes in regulatory markers of osteoblastic activity. Rutin (≥50μM), hyperoside (≥5.0μM), orientin (0.1μM-1.0μM, 15μM-100μM) and luteolin (5.0μM) enhanced mineral content. This was in part due to elevated ALP and mitochondrial activity, and lower toxicity, pro-inflammatory cytokines, and Wnt inhibitors.

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Receipt from John R. Monro, Tea, China, Glass and Crockery House, St. Catharines for kitchen items, shoes and mustard, April 12, 1887.

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Bill of landing (copy) for tea chest and boxes received at Port Hamilton, Sept. 14, 1840.

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Ce mémoire étudie les conditions d’émergence du mouvement Tea Party. Nous cherchons à savoir si la mobilisation a été facilitée par la présence d’opportunités politiques, telles que proposées dans la littérature sur les mouvements sociaux. À l’aide d’une analyse de contenu, il a été possible d’observer trois opportunités dans une période comprise entre février 2009 et octobre 2010. Dans cette même période, il a été aussi possible d’identifier la fréquence et la nature de la mobilisation, qui prend la forme de protestations et de réunions informelles. Nous en arrivons à la conclusion que ces opportunités étaient présentes lors de l’émergence du mouvement social. En effet, la présence d’enjeux spécifiques, d’une division partisane ainsi que d’alliés coïncide avec une augmentation substantielle de la mobilisation. Les élections de mi-mandat semblent avoir transformé un mouvement axé sur les protestations vers une action politique conventionnelle.

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Objectif: Étudier l’association entre la consommation de café, la consommation de thé noir et le risque de cancer du poumon. Méthodologie: Cette recherche utilise les données obtenues lors d’une étude cas-témoin effectuée à Montréal avec des résidents canadiens âgés entre 35 et 75 ans recrutés entre 1996 et 2001. Les cas étaient des individus atteints du cancer et diagnostiqués entre 1996 et 1997 dans l’un des 18 hôpitaux de la région du Grand-Montréal. Les contrôles on été sélectionnés à partir de la liste électorale et appariés selon la fréquence de distribution des cas par groupe d’âge de 5 ans, par sexe et par district électoral. Au total, 1130 cas et 1484 contrôles ont été inclus dans cette étude. Les rapports de cote (RC) et les intervalles de confiance de 95% (CI) des associations entre la consommation de thé noir, de café et le cancer du poumon ont été estimés à l’aide de la régression logistique non conditionnelle. Quatre aspects de la consommation ont été analysés dans des modèles multivariés distincts: la fréquence de consommation, la consommation journalière moyenne, la durée de consommation et la consommation cumulative. Les covariables potentielles considérées incluaient : l’âge, le sexe, l’historique de tabagisme, le statut du répondant, l’ethnicité, la consommation d’alcool, la consommation de fruit et de légume, l’apport énergétique journalier, l’exposition a des agents professionnelle et les variables socio-économiques . Des analyses secondaires par le sexe, le tabagisme et le type histologique de cancer on été effectuées. Résultats : Aucune association statistiquement significative n’a été observée entre la consommation de thé noir et le cancer du poumon. Nos résultats suggèrent qu’une consommation de ≥ 50 ans était associée avec une augmentation du risque d’adénocarcinome comparée à aucune consommation. Nous avons observé une association inverse statistiquement significative entre la consommation occasionnelle de café et le cancer du poumon (RC : 0.32, 95%CI : 0.17-0.59). La durée de consommation de café n’était pas associée avec le cancer du poumon. Conclusion : Nos résultats suggèrent que la consommation à long terme de thé noir pourrait augmenter le risque d’adénocarcinome. D’un autre côté, la consommation occasionnelle de café pourrait réduire le risque de cancer du poumon.

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The overall objective of the study is to examine the problems and prospects of the tea on industry in Kerala. The specific objectives are to trace the historical evolution of the tea plantation industry in India with special reference to Kerala and to study the performance of tea plantation industry in Kerala. In order to analyse the growth performance of tea plantation industry in Kerala in a comparative perspective, growth rates for the neighbouring states of Karnataka and Tamilnadu are estimated along with the National, South Indian and North Indian estimates. Tea plantation industry is a labour intensive activity. Productivity has been low primarily because of the over aging. In all the factories visited only Black tea is produced. In factories outmoded machines which installed years ago is still used which will increase the cost of production. The major problem is high cost of production and low price realization. The workers are found to be not satisfied with their working conditions- long journey to work place, absence of resting places, latrine facilities etc. and also the problems arising from dust in the factory. At a macro level the tea plantation industry has been facing the adverse impacts of globalisation and trade liberalization. There is only one solution to this problem that is to improve the competitiveness in production of raw leaf and manufacturing of tea. Government has a very important role with specification of strict quality control

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Thc tea industry in lndia is going through a period of crisis. The crisis in brought about mainly by cost caculation and declining or stagnant prices. The impact of the present crisis is felt most by the owners of tea plantations in Kcrala . The present study assumes significance due to the fact that the critic which already affected Keralas tea industry is now threatening to extend to other tea-growing areas in south India. Today, ensuring a favourablc price to the producers via-a-via possibilities or reducing the cost of production through increase in productivity of land and labour are the main considerations. The main purpose of the study is to analyse the factors behind the crisis as well as exploring immediate and long-term measures for the sustained growth of the industry.

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Organic agriculture in developing countries has increased in past decades especially due to the high demand of organic products in developed countries. The rate of conversion to organic production in Nepal, however, is observed much slower than expected. This study investigates factors that determine the conversion to organic production using Nepalese tea producers as a case study. A survey of 181 farmers was conducted in the Ilam and Panchthar district of Nepal, among which 86 were organic farmers and 95 were conventional farmers. A discriminant analysis was used to identify socio-economic characteristics that distinguish conventional and organic farmers. Results from the estimated discriminant function suggest that farmers located in a distance from regional markets, older in age, better trained, affiliated with institutions and having larger farms are more likely to adopt organic production. Similarly, a factor analysis shows that environmental awareness, bright market prospects, observable economic benefit and health consciousness are the major factors influencing farmers’ decisions on the conversion to organic production. While planning programs for the development of the organic tea sector in Nepal, policy makers should consider the support of farmers’ institutions, provision of training to farmers and raise farmers’ awareness about the environmental, economic and health benefits of organic farming.

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Averiguar la validez predictiva del TEA-2, y de cada uno de sus factores, tomando como criterio las calificaciones escolares de los alumnos de octavo de EGB en las áreas de Lenguaje, Matemáticas, Naturales y Sociales, así como la global de nivel al finalizar el curso escolar. 150 alumnos de octavo nivel de EGB de tres colegios públicos del Valle del Nalón. Utiliza el modelo de validez predictiva para una medida empírica de criterio externo con un único grupo de sujetos. TEA-2 de Thurstone. Calificaciones escolares. Cálculo a partir de las puntuaciones directas del coeficiente de correlación producto-momento de Pearson. Cálculo también de los coeficientes d, k y e, y los errores típicos de estimación para obtener una visión más amplia de la utilidad predictiva del TEA-2. Todas las correlaciones (coeficientes de validez) resultan significativas. Globalmente considerado, el TEA-2 tiene la suficiente validez como para servir de predictor del rendimiento académico en las áreas fundamentales del currículum, especialmente en lo referente a predicciones grupales. Teniendo en cuenta cada uno de los factores, hay que destacar el inferior valor predictivo cuando se usan las calificaciones del área de Lenguaje como criterio.

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Els estudiants de segon d'Educació Social vàrem anar a Eindhoven (Holanda) la setmana del 5 al 8 de febrer de 2008 amb dos objectius: veure com és la realitat dels centres educatius en aquest país i gaudir de les estones lliures del viatge tots plegats. Hem fet aquest article per poder-vos explicar la nostra experiència durant aquests dies i compartir com és la feina dels educadors en aquest país i el funcionament dels centres en els quals treballen, sense oblidar-nos de la vesant més lúdica