16 research outputs found
Psychopathology and causal explanation in practice. A critical note on Heideggerâs Zollikon Seminars
TRY plant trait database â enhanced coverage and open access
Plant traitsâthe morphological, anatomical, physiological, biochemical and phenological characteristics of plantsâdetermine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits and detriments to people. Plant trait data thus represent the basis for a vast area of research spanning from evolutionary biology, community and functional ecology, to biodiversity conservation, ecosystem and landscape management, restoration, biogeography and earth system modelling. Since its foundation in 2007, the TRY database of plant traits has grown continuously. It now provides unprecedented data coverage under an open access data policy and is the main plant trait database used by the research community worldwide. Increasingly, the TRY database also supports new frontiers of traitâbased plant research, including the identification of data gaps and the subsequent mobilization or measurement of new data. To support this development, in this article we evaluate the extent of the trait data compiled in TRY and analyse emerging patterns of data coverage and representativeness. Best species coverage is achieved for categorical traitsâalmost complete coverage for âplant growth formâ. However, most traits relevant for ecology and vegetation modelling are characterized by continuous intraspecific variation and traitâenvironmental relationships. These traits have to be measured on individual plants in their respective environment. Despite unprecedented data coverage, we observe a humbling lack of completeness and representativeness of these continuous traits in many aspects. We, therefore, conclude that reducing data gaps and biases in the TRY database remains a key challenge and requires a coordinated approach to data mobilization and trait measurements. This can only be achieved in collaboration with other initiatives
Can there be a 'cosmetic' psychopharmacology? Prozac unplugged: the search for an ontologically distinct cosmetic psychopharmacology
Isolation and characterization of yeast mutants auxotrophic for 2âČ-deoxythymidine 5âČ-monophosphate
A reforma psiquiĂĄtrica e seus crĂticos: consideraçÔes sobre a noção de doença mental e seus efeitos assistenciais
Fluid forces on a very low Reynolds number airfoil and their prediction
This paper presents the measurements of mean and fluctuating forces on an NACA0012 airfoil over a large range of angle (α) of attack (0â90°) and low to small chord Reynolds numbers (Rec), 5.3 Ă 103â5.1 Ă 104, which is of both fundamental and practical importance. The forces, measured using a load cell, display good agreement with the estimate from the LDA-measured cross-flow distributions of velocities in the wake based on the momentum conservation. The dependence of the forces on both α and Rec is determined and discussed in detail. It has been found that the stall of an airfoil, characterized by a drop in the lift force and a jump in the drag force, occurs at Rec â©Ÿ 1.05 Ă 104 but is absent at Rec = 5.3 Ă 103. A theoretical analysis is developed to predict and explain the observed dependence of the mean lift and drag on α