Second world record for Barathronus roulei Nielsen, 2019 (Ophidiiformes, Bythitidae), from the Porcupine Bank (Northeast Atlantic).

Barathronus is a genus of blind cusk eels comprising 11 valid species. In this paper, we report the second specimen ever documented of Barathronus roulei (Bythitidae) obtained from the Porcupine Bank by R.V.

[Coin tossing: Development of a computerized test to assess cognitive flexibility in older adults].

Background: The aging population is increasing. Aging has been associated with some degree of cognitive decline, especially in functions such as cognitive flexibility. The voluntary task-switching paradigm is a novel model for studying this function.

[Prevalence of neurocognitive disorders in a rural area of Argentina].

Aim: To carry out a cognitive screening to detect cases of Neurocognitive Disorders (NCD) 60 and over years adults and estimate its prevalence in the eastern area of Tucumán.

Methods: A neuropsychological assessment was carried out. Groups were formed according to the presence and severity of NCD.

New Spanish semantic feature production norms for older adults.

Semantic feature production norms are a useful tool for researchers to have empirically collected data about the semantic representations of a particular population. As older adults have been shown to have certain differences in their semantic knowledge organization in comparison with younger adults, it is relevant for them to have their own normative data. Thus we present here the first Spanish semantic feature production norms for older adults.

The Change Processes in Selective Attention during Adulthood. Inhibition or Processing Speed?

Selective attention is involved in multiple daily activities. Several authors state that it experiences a decline after 20 years, although there is no agreement regarding the cognitive processes that explain it. Two theories dominate the discussion: The theory of inhibitory inefficiency and the theory of processing speed.

Simulation of Capture and Release Processes of Hydrogen by β-Hydroquinone Clathrate.

Using molecular simulation techniques, we investigate the storage capabilities of H gas by the clathrate of hydroquinone (HQ). Quantum mechanics calculations have been used to assess structure and interactions at the atomic scale and molecular dynamics to model the HQ clathrate at successive equilibriums during the processes of capture and release of H, as well as the diffusion of H inside the clathrate structure. The thermodynamic conditions of the simulations performed try to reproduce closely the corresponding experimental procedures, with results that are in good agreement with literature observed trends.

Cognitive flexibility in adulthood and advanced age: Evidence of internal and external validity.

Aging causes changes that affect functioning of cognitive processes such as cognitive flexibility (CF). Given it allows changing both behavior and thinking in dynamic contexts, it constitutes an essential trait of adaptive, goal-oriented behavior. Despite its importance, specific techniques to evaluate CF in older adults are lacking.

A description of hydroquinone clathrates using molecular dynamics: Molecular model and crystalline structures for CH and CO guests.

The crystalline structure of hydroquinone clathrates has been studied using molecular dynamics. A flexible non-polarizable all-atom molecular model, based on the original Optimized Potentials for Liquid Simulations force field with recalculated point electric charges, has been used to describe the hydroquinone molecule, and the crystalline solid structure of the α native phase has been analyzed. Then, the β clathrates have been studied, considering CO and CH as guest molecules, and also the empty clathrate structure.

Cognitive functioning: is it all or none?

Under various circumstances, the cognitive system operates in a global manner that is not very precise and barely discriminatory. This form of operating has been described via a general principal that Diamond (Developmental Psychology 45:130-138, 2009) has denominated the All or None Hypothesis. This author has described a set of corollaries derived from this hypothesis that make it possible to verify it in each one of these domains.

Spanish semantic feature production norms for 400 concrete concepts.

Semantic feature production norms provide many quantitative measures of different feature and concept variables that are necessary to solve some debates surrounding the nature of the organization, both normal and pathological, of semantic memory. Despite the current existence of norms for different languages, there are still no published norms in Spanish. This article presents a new set of norms collected from 810 participants for 400 living and nonliving concepts among Spanish speakers.

Phylogenetic comparison of opine dehydrogenase sequences from marine invertebrates.

Three cDNA sequences encoding putative opine dehydrogenase (OpDH) enzymes from the mussel Mytilus galloprovincialis were obtained. The deduced amino acid sequences were clearly distinguishable from each other, showing that several OpDH transcripts could occur in the mussel tissues (p distance 0.46-0.

Identification of octopine dehydrogenase from Mytilus galloprovincialis.

A cDNA encoding the putative octopine dehydrogenase (OcDH) from the mussel Mytilus galloprovincialis was cloned and sequenced. The complete coding region was expressed in the bacteria Escherichia coli and the recombinant protein was purified. The M.

Development and characterization of 248 novel microsatellite markers in turbot (Scophthalmus maximus).

The turbot is a flatfish species of great relevance to marine aquaculture in Europe. Only a limited number of microsatellites have been isolated to date in this species. To increase the number of potentially useful mapping markers, we screened simple sequence repeat (SSR)--enriched genomic libraries obtained from several di-, tri-, and tetranucleotide tandem repeat motifs.

Molecular identification of nine commercial flaffish species by polymerase chain reaction-restriction fragment length polymorphism analysis of a segment of the cytochrome b region.

Commercial refrigerated or frozen flatfish fillets are sometimes mislabeled, and identification of these mislabeled products is necessary to prevent fraudulent substitution. Identification of nine commercial flatfish species (order Pleuronectiformes), Hippoglossus hippoglossus (halibut), Lepidorhombus boscii (four-spotted scaldfish), Lepidorhombus whiffiagonis (megrin), Platichthys flesus (flounder), Pleuronectes platessa (European plaice), Reinhardtius hippoglossoides (Greenland halibut), Scophthalmus maximus (turbot), Scophthalmus rhombus (brill), and Solea vulgaris (=Solea solea) (sole), was carried out on the basis of the amplification of a 486-bp segment of the mitochondrial genome (tRNA(Glu)/cytochrome b) by using the polymerase chain reaction (PCR) and universal primers. Sequences of PCR-amplified DNA from the flatfish species were used to select eight restriction enzymes (REs).