the aim followed in the present study was to evaluate the antioxidant activity of individual vs. combined extracts of rosemary leaves and oak fruit to detect the possible interactions in their antioxidant activity following combination and in order to find a way to use oak fruit natural antioxidants as an available massive source in iran. towards this end, methanolic extracts of rosemary and oa...

one of the most visible aspects of a forest stand structure is the spatial patterns of trees. competition affects on forest structure and its understanding is important, when the purpose of forest management is to imitate the dynamic of natural ecosystems. for this purpose, an unmanaged intact forest was selected with 26 hectares area. all chestnut leaf oak (quercus castaneifolia) trees with a ...

1. EPIUnit Instituto de Saúde Pública. Universidade do Porto. Porto. Portugal. 2. Departamento de Epidemiologia Clínica, Medicina Preditiva e Saúde Pública. Faculdade de Medicina. Universidade do Porto. Porto. Portugal.  Autor correspondente: Mariana Amorim. [email protected] Recebido: 18 de Julho de 2014 Aceite: 15 de Dezembro de 2014 | Copyright © Ordem dos Médicos 2015 Mariana AMOR...

In 2007, Germany enacted a radical new parental leave benefit scheme that grants parents 67 percent of their previous income, and includes two “daddy months.” In this paper, we use data from the German Microcensus for the period 1999 to 2009 to explore how this reform has changed fathers’ use of parental leave. We find strong overall increase in parental leave usage among men. Two groups of men...

This paper examines the causal effects of a major change in the German parental leave benefit scheme on fertility. I use the unanticipated reform in 2007 to assess how a move from a means-tested to an earnings-related benefit affects higher-order births. By using the German Mikrozensus 2010, I find that the reform significantly affected the timing of higher-order births in the first three years...

This study was conducted to assess the ability of the studied adsorbent, i.e. raw oak fruit hulls and the activated carbon prepared from oak fruit hull for removing the Methylene blue (MB) from aqueous solution. This study was conducted under various effective parameters, e.g., contact time, pH, MB concentration, adsorbent concentration. The optimum amount of each parameter was determined a...

The first (1981-1984) and second (1991-1994) statewide inventories of California’s oak woodlands found low levels of regeneration for several common oak species. In 2001, a new statewide inventory of California’s oak woodlands was initiated, with 10 percent of field plots measured each year. The first five years of data (2001-2005) were used to examine regeneration and sapling distributions in ...

Black oak (Quercus velutina Lam.) and scarlet oak (Quercus coccinea Muenchh.)—two major components (44% of total stand basal area) of upland oak forests—are suffering severe decline and mortality in the Ozark Highlands, Missouri. However, factors influencing their survival (mortality) are not well understood. In this study we quantified how stand and tree-level predisposing factors are associat...

We monitored the decomposition of mixed leaf litter (Quercus spp., Carya spp., and Pinus echinata) in a Missouri Ozark forest eight years after experimental harvest. Leaf littermass losses and changes in carbon chemistry (extractive, acid soluble, and acid insoluble fractions) were measured over 32 months in field incubations to determine the effects of litter composition and standmanipulation ...