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Three new species of Licania (Chrysobalanaceae) from Peru
submitted by vitsargiry 1 day ago - Topic: Biology
Recent collections received for identification contain three conspicuous new species for the mid altitude forests of Amazonian Peru. Licania palcazuensis, L. apiknae and L. monteagudensis are described as new and their relationship to other species is discussed. A key is provided for all the species of Licania subgenus Licania section Licania known to occur in Peru....



Synopsis of Nekemias Raf., a segregate genus from Ampelopsis Michx. (Vitaceae) disjunct between eastern/southeastern Asia and eastern North America, with ten new combinations
submitted by vitsargiry 1 day ago - Topic: Biology
The genus Nekemias (Vitaceae) was first recognized by Rafinesque in 1838. It has been treated as a synonym of Ampelopsis Michx. Recent phylogenetic studies suggest that Ampelopsis as traditionally delimited is paraphyletic. To maintain the monophyly of each of the genera of Vitaceae, we herein segregate the Ampelopsis sect. Leeaceifoliae lineage from Ampelopsis and recognize these taxa in Nekem...

Subclinical psychopathic traits and romantic attachment in community couples: A dyadic approach
submitted by dacrhio13 1 day ago - Topic: Health
The purpose of this study is to investigate the dyadic associations between subclinical primary and secondary psychopathic traits and romantic attachment dimensions (avoidance and anxiety) in a sample of 140 couples from the community. Both partners completed self-report measures of psychopathic traits and romantic attachment. Actor–partner interdependence model analyses showed an actor effec...

Culture and gender differences in romantic jealousy
submitted by dacrhio13 1 day ago - Topic: Health
Jealousy is an intense emotion that is experienced in the context of romantic relationships. Previous research reported gender differences in ratings of jealousy over a sexual versus emotional infidelity. This study explored culture and gender differences in jealousy using a mixed methods survey design. One hundred and forty-five undergraduates from the University of Hawai‘i at Hilo participa...

Competition, autonomy, and prestige: Mechanisms through which the Dark Triad predict job satisfaction
submitted by dacrhio13 1 day ago - Topic: Health
Organizational researchers increasingly recognize the need to consider the Dark Triad traits (i.e., psychopathy, Machiavellianism, and narcissism) when explaining undesirable work outcomes (e.g., counterproductive behaviors). However, little research has focused on the motivations of those who actually hold the traits. In this study (N =361) we examined how the Dark Triad traits predispose indi...



Multiple mediators of reward and punishment sensitivity on loneliness
submitted by dacrhio13 1 day ago - Topic: Health
The purpose of this paper was to use the revised Reinforcement Sensitivity Theory as a framework to understand loneliness. We expected higher loneliness to be associated with high reward sensitivity and low punishment sensitivity. We tested how reward and punishment sensitivity could affect loneliness by exploring potential mediators including shyness, sociability, communal orientation, and acc...

The effect of causality orientations and positive competence-enhancing feedback on intrinsic motivation: A test of additive and interactive effects
submitted by dacrhio13 1 day ago - Topic: Health
Based on self-determination theory, this study investigated whether individual differences in autonomy or control causality orientation and positive competence-enhancing feedback have additive or interactive effects on intrinsic motivation. Autonomy- or control-oriented participants provided solutions to an interesting puzzle under conditions of positive competence-enhancing feedback or no feed...


Pre-pulse inhibition and antisaccade performance indicate impaired attention modulation of cognitive inhibition in 22q11.2 deletion syndrome (22q11DS)
submitted by girordamx 1 day ago - Topic: Health
22q11.2 deletion syndrome (22q11DS) is associated with a number of physical anomalies and neuropsychological deficits including impairments in executive and sensorimotor function. It is estimated that 25% of children with 22q11DS will develop schizophrenia and other psychotic disorders later in life. Evidence of genetic transmission of information processing deficits in schizophrenia suggests p...

Solid-phase microextraction fiber development for sampling and analysis of volatile organohalogen compounds in air
submitted by pandhiiponkor 1 day ago - Topic: Environment
A green, environmental friendly and sensitive method for determination of volatile organohalogen compounds was described in this paper. The method is based on a homemade sol?gel single-walled carbon nanotube/silica composite coated solid-phase microextraction to develop for sampling and analysis of Carbon tetrachloride, Benzotrichloride, Chloromethyl methyl ether and Trichloroethylene in air. A...


Income-related inequalities in preventive and curative dental care use among working-age Japanese adults in urban areas: a cross-sectional study
submitted by chaanshiin 1 day ago - Topic: Health
Preventive dental care use remains relatively low in Japan, especially among working-age adults. Universal health insurance in Japan covers curative dental care with an out-of-pocket payment limit, though its coverage of preventive dental care is limited. The aim of this study was to test the hypothesis that income inequality in dental care use is found in preventive, but not curative dental ca...

Vitamine D : sources, métabolisme et mécanismes d’action
submitted by samonothco 1 day ago - Topic: Health
Longtemps cantonné à son rôle dans le métabolisme phosphocalcique, la vitamine D apparaît aujourd’hui comme une vitamine aux multiples potentialités, puisque étant impliquée dans de nombreux processus physiologiques. De par son double origine alimentaire et endogène, la vitamine D constitue une vitamine à part, dont les apports et les besoins restent délicats à définir et font ac...


Nicotine increases GABAergic input on rat dorsal raphe serotonergic neurons through alpha 7 nicotinic acetylcholine receptor
submitted by sarish 1 day ago - Topic: Health
The dorsal raphe nucleus (DRN) contains large populations of serotonergic (5-HT) neurons. This nucleus receives GABAergic inhibitory afferents from many brain areas and from DRN interneurons. Both GABAergic and 5-HT DRN neurons express functional nicotinic acetylcholine receptors (nAChRs). Previous studies have demonstrated that nicotine increases 5-HT release and 5-HT DRN neuron discharge rate...

Auditory evoked fields measured non-invasively with small-animal MEG reveal rapid repetition suppression in the guinea pig
submitted by sarish 1 day ago - Topic: Health
In animal models, single-neuron response properties such as stimulus-specific adaptation (SSA) have been described as possible precursors to the mismatch negativity (MMN), a human brain response to stimulus change. Here, we attempt to bridge the gap between human and animal studies by characterising responses to changes in the frequency of repeated tone series in the anaesthetised guinea pig us...

Masking produces compression of space and time in the absence of eye movements
submitted by sarish 1 day ago - Topic: Health
Whenever the visual stream is abruptly disturbed by eye movements, blinks, masks or flashes of light, the visual system needs to retrieve the locations of current targets of interest in the new input stream and to reconstruct the timing of events in order to straddle the interruption. This process may introduce position and timing errors. We here report that very similar errors are seen in huma...

The binaural masking level difference: cortical correlates persist despite severe brain stem atrophy in progressive supranuclear palsy
submitted by sarish 1 day ago - Topic: Health
Under binaural listening conditions, the detection of target signals within background masking noise is substantially improved when the interaural phase of the target differs from that of the masker. Neural correlates of this 'Binaural masking level difference' (BMLD) have been observed in the inferior colliculus and temporal cortex, but it is not known whether degeneration of the inferior coll...