Sökresultat

Numerical analyses (multidimensional scaling and Bk non-hierarchic cluster analysis) of wild populations of Silene dioica (L.) CIairv. from Scotland showed a complex pattern of variation, related partly to habitat and partly to geographic location. Subsets of characters- flower/capsule, seed, and vegetative characters- showed discordance, i.e. imperfectly correlated patterns of variation.Material

Silene alba Muhl. ex Britton (1893), although considered to be an illegitimate substitution for S. nivea (Nutt.) Otth, is validly published and as a result S. alba (Miller) E. H. L. Krause (1901), the widely used name for the weed white campion or white cockle, is illegitimate. It is shown that the correct name for this species in Silene is S. pratensis (Rafn) Godron & Gren. A new taxonomic tr

The paper examines how interjections have been treated in linguistic literature; on what grounds they have been separated from pure response cries; and what their relation is to iconic (onomatopoeic) vocabulary items. Second, the paper examines various English grammars intended for university level students, especially in second language contexts, to see how their treatment of interjections reflec

Abstract:A pair of morphologically differentiated sex chromosomes is reported from the Valencian endemic, Silene diclinis. In S. diclinis, the sex chromosomes differ in centromere position, but X and Y chromosomes are approximately equal in length. In the other dioecious species in Silene sect. Elisanthe, the Y chromosome is considerably longer than the X chromosome.Resumen:Se da noticia de un par

Partially Premixed Combustion has shown to be a promising internal combustion concept in terms of engine efficiency and emission levels, however, since the combustion process is partly kinetically controlled, unacceptably high pressure-rise rates could occur at various operating points. A remedy to this problem is the use of a pilot-fuel injection. This paper characterizes double injection effects

For assembly tasks, the knowledge of both trajectory and forces are usually required. Consequently, we may use kinesthetics or teleoperation for recording human demonstrations. In order to have a more natural interaction, the operator has to be provided with a sense of touch. We propose a bilateral teleoperation system which is customized for this purpose. We introduce different coordinate frames

This paper investigates the role of human agency in 40 phases of regional economic development in 12 Nordic regions over 30 years. It contributes with a theoretical framework to study agency over time and a fuzzy-set qualitative comparative analysis based on a unique dataset combining over 200 interviews, with printed and online sources, and quantitative data. The paper identifies which combinatio

Our overall understanding of long-term climate dynamics is largely based on proxy data generated from archives such as ice cores, ocean sediments, tree rings, speleothems, and corals, whereas reconstructions of long-term changes in vegetation and associated climate during the Holocene are largely based on paleoecological records from peat and lake sequences, primarily pollen and plant macrofossil

Increasing occurrences of extreme weather events, such as the 2018 drought over northern Europe, are a concerning issue under global climate change. High-resolution archives of natural hydroclimate proxies, such as rapidly accumulating sediments containing biogenic carbonates, offer the potential to investigate the frequency and mechanisms of such events in the past. Droughts alter the barium (Ba)

Binding between protein molecules on contacting cells is essential in initiating and regulating several key biological processes. In contrast to interactions between molecules in solution, these events are restricted to the two-dimensional (2D) plane of the meeting cell surfaces. However, converting between the more commonly available binding kinetics measured in solution and the so-called 2D bind