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Isolamento mecânico das células endoteliais e sua caraterização por citometria ...

Effects of Salinity Induced by Ammonium Sulfate Fertilizer on Root and Shoot Gr...

Abstract Ammonium sulfate fertilizer is commonly used in highbush blueberry (Vaccinium corymbosum L.) but often causes salt damage, particularly in young plants, when high rates are applied. Three experiments were done to determine the sensitivity of ‘Bluecrop’ blueberry to ammonium sulfate and identify the salinity threshold at which plant growth was affected. In the first experiment, plants were grown in pots...

Fertigation with micronized Sulfur rapidly reduces soil pH

Blueberry is adapted to low soil pH in the range of 4-5.5. At higher pH, soil is often modified with elemental sulfur (S) prior to planting. A 2-year study was conducted to determine the potential of applying micronized wettable S by fertigation through the drip system to reduce soil pH in highbush blueberry. The field was planted in October 2010. The S was mixed with water and injected weekly for 2 months prio...

Effect of nitrogen source on soil nitrate concentration and yield, and quality ...

The effect of nitrogen source application, broadcast onto the planting bed during the growing phase, on soil nitrate concentration, soil pH, yield, and quality of intermediate-day onions was evaluated in a field experiment in southern Portugal. In addition, the soil potential for providing nitrate-N to the crop along the growing season was also monitored. The field trial consisted of six treatments of differe...

Avaliação de cultivares de mirtilo no Alentejo Anterior

As plantas de mirtilo eram cultivadas em climas frios, pois as cultivares utilizadas “Northern highbush “ após a entrada em dormência necessitam de acumular entre 800 a 1200 h de temperaturas entre 0 e 7.2 º C (“chilling”). Contudo, devido ao aparecimento das cultivares “Southern highbush ” e “Rabbiteys” com menores necessidades de acumulação de baixas temperaturas; respectivamente, entre 150 a 800h e entre 30...

Comparative Study of smart irrigation control in greenhouses

With greenhouses it is possible to increase crop production and reduce significantly the water use. Additionally advancements in electronics and shortage of water have led to the development of “smart” or adaptive irrigation controllers that adjust the water application depth to plant needs, and thus increase water savings. The two most common types are soil moisture based and evapotranspiration based systems. ...

Effectiveness of habitat management in the recovery of low-density populations ...

Understanding the relationship between spatial patterns of landscape attributes and population presence and abundance is essential for understanding population processes as well as supporting management and conservation strategies. This study evaluates the influence of three factors: environment, habitat management, and season on the presence and abundance of the wild rabbit (Oryctolagus cuniculus), an importan...

Into the box : o panorama actual, a mega-estrutura, o poliestireno expandido e ...

Foi durante a preparação desta tese de mestrado que me surgiu a oportunidade de realizar um estágio, com uma bolsa da universidade, num conceituado atelier europeu. O fascínio e curiosidade pelas obras de Antón Garcia-Abril e o seu atelier Ensamble Studio não me deixaram dúvidas na hora de escolher e rapidamente parti para Madrid. Nos quatro meses de estágio a minha colaboração, entre outros projectos, esteve c...

On the Scalability of Constraint Programming on Hierarchical Multiprocessor Sys...

Recent developments in computer architecture progress towards systems with large core count, which expose more parallelism to applications, creating a hierarchical setup at the node and cluster levels. To take advantage of all this parallelism, applications must carefully exploit the different levels of the system which, if ignored, may yield surprising results. This aggravates the already difficult task of par...

Proposta metodológica para avaliação de impactes na paisagem

Dissertação apresentada como requisito parcial para obtenção do grau de Mestre em Ciência e Sistemas de Informação Geográfica ; A perda e a fragmentação de habitat são considerados dois dos mais graves problemas afetando negativamente a biodiversidade. Embora existam muitos estudos acerca dos seus impactes, encontram-se na bibliografia da especialidade várias inconsistências quer semânticas quer conceptuais re...