138 research outputs found
Photoluminescence property of polymer–rare earth complexes containing acetaldehyde/aminophenol type bidentate Schiff base ligand
<p>Acetaldehyde was introduced onto the side chains of polysulfone, and then Schiff base reactions were carried out between the introduced acetaldehyde and ortho-aminophenol (OAP) or meta-aminophenol (MAP). Two bidentate Schiff base (B) ligands of acetaldehyde/aminophenol type, OAPB and MAPB, were bonded on the side chains of polysulfone, and two new bidentate Schiff base ligand functionalized-polysulfones, PSF-OAPB and PSF-MAPB, were obtained. The triplet state energies of OAPB and MAPB are well matched with the resonant level energy of Tb(III), and the Tb(III) complexes emit the strong characteristic fluorescence of Tb(III) (green luminescence). Complexes of Eu(III) have no fluorescence emission because of the mismatching of the energy levels. In comparison, the fluorescence intensity of the binary complex PSF-(MAPB)<sub>3</sub>-Tb(III) is stronger than that of the binary complex PSF-(OAPB)<sub>3</sub>-Tb(III) because of the structured difference of the chelating ring. The ternary complexes PSF-(MAPB)<sub>3</sub>-Tb(III)-(Phen)<sub>1</sub> (Phen represents 1,10-phenanthroline) and PSF-(OAPB)<sub>3</sub>-Tb(III)-(Phen)<sub>1</sub> have stronger fluorescence emissions than the corresponding binary complexes. The fluorescence emission intensities of solid films of the complexes are stronger than that of their solutions. The prepared luminescent polymer-Tb(III) complexes containing acetaldehyde/aminophenol type bidentate Schiff base ligands have very high quantum yields (80–86%), reflecting the high intramolecular energy transfer efficiencies from the ligands to Tb(III).</p
Grand average of the P1 component.
<p>Please note that the topographic maps did not show the distribution of voltage over the left mastoid (i.e. the reference electrode).</p
Data_Sheet_1_Effects of Directed Attention on Subsequent Processing of Emotions: Increased Attention to Unpleasant Pictures Occurs in the Late Positive Potential.DOCX
<p>Directed attention is a fundamental mental resource for voluntarily managing the focus and direction of cognitive resources. The present study investigated how processing of unpleasant and neutral images is affected by emotion and previous directed attention. The results showed that there was enhanced early posterior negativity, anterior N2, and parietal late positive potential (LPP) in response to unpleasant pictures compared to neutral pictures. Furthermore, attention history (i.e., whether stimuli were previously attended to) modulated the amplitudes of the anterior N2 and parietal LPP. Most notably, an interaction between attention history and emotion was found in the LPP: pictures with an ‘attended history’ evoked larger LPP amplitudes than pictures with an ‘unattended history,’ but this effect was only significant for unpleasant pictures (not for neutral pictures). These results suggest that directed attention to affective pictures facilitates subsequent neural processing of these pictures, and that this effect was amplified by unpleasant emotions experienced in the LPP. The current findings provide further empirical evidence of a two-stage model of emotion-attention interaction.</p
Schematic diagram of one experimental trial.
<p>Schematic diagram of one experimental trial.</p
Behavioral results, face-body compound stimuli (data are presented as mean ± SD).
<p>Behavioral results, face-body compound stimuli (data are presented as mean ± SD).</p
Rating for the type of emotion expressed by faces in different face-body conditions.
<p>Rating for the type of emotion expressed by faces in different face-body conditions.</p
Rating for the type of emotion expressed by faces (data are reported using percent (%) and presented as mean ± SD).
<p>Rating for the type of emotion expressed by faces (data are reported using percent (%) and presented as mean ± SD).</p
Behavioral results of the 42 subjects (data are presented as mean±SD; minimum to maximum).
<p>Behavioral results of the 42 subjects (data are presented as mean±SD; minimum to maximum).</p
DataSheet_1_Changing trends in the disease burden of uterine cancer globally from 1990 to 2019 and its predicted level in 25 years.docx
BackgroundWe aim to evaluate the global, regional, and national burden of Uterine Cancer (UC) from 1990 to 2019.MethodsWe gathered UC data across 204 countries and regions for the period 1990-2019, utilizing the Global Burden of Disease Database (GBD) 2019 public dataset. Joinpoint regression analysis was employed to pinpoint the year of the most significant changes in global trends. To project the UC trajectory from 2020 to 2044, we applied the Nordpred analysis, extrapolating based on the average trend observed in the data. Furthermore, the Bayesian Age-Period-Cohort (BAPC) model with integrated nested Laplace approximations was implemented to confirm the stability of the Nordpred analysis predictions.ResultsGlobally, the age-standardized rate (ASR) of incidence for UC has increased from 1990 to 2019 with an Average Annual Percentage Change (AAPC) of 0.50%. The ASR for death has declined within the same period (AAPC: -0.8%). An increase in the ASR of incidence was observed across all Socio-demographic Index (SDI) regions, particularly in High SDI regions (AAPC: 1.12%), while the ASR for death decreased in all but the Low SDI regions. Over the past 30 years, the highest incidence rate was observed in individuals aged 55-59 (AAPC: 0.76%). Among 204 countries and regions, there was an increase in the ASR of incidence in 165 countries and an increase in the ASR of deaths in 77 countries. Our projections suggest that both the incidence and death rates for UC are likely to continue their decline from 2020 to 2044.ConclusionsUC has significantly impacted global health negatively, with its influence stemming from a range of factors including geographical location, age-related and racial disparities, and SDI.</p
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