Subjective sleep more predictive of global cognitive function than objective sleep in older adults: A specification curve analysis.

Objectives: Sleep is associated with cognitive function in older adults. In the current study, we examined this relationship from subjective and objective perspectives, and determined the robustness and dimensional specificity of the associations using a comprehensive modelling approach.

Methods: Multiple dimensions of subjective (sleep quality and daytime sleepiness) and objective sleep (sleep stages, sleep parameters, sleep spindles, and slow oscillations), as well as subjectively reported and objectively measured cognitive function were collected from 55 older adults.

The influence of cognitive activity on subsequent daytime nap: A deep neural network model based on sleep spindles.

Objectives: Understanding the influence of cognitive activity on subsequent sleep has both theoretical and applied implications. This study aims to investigate the effect of pre-sleep cognitive activity, in the context of avoiding emotional interference, on macro-sleep and sleep spindles.

Methods: In a within-subjects design, participants' sleep electroencephalography was collected in both the with and without pre-sleep cognitive activity conditions.

[Quantitative chromatographic fingerprint analysis of Sanye Tangzhiqing Decoction based on quality by design concept].

In this work,a high performance liquid chromatography-ultraviolet( HPLC-UV) detection technology was used to establish fingerprint analysis method for Sanye Tangzhiqing Decoction following an analytical quality by design( AQb D) approach. Firstly,column temperature,flow rate,and gradient elution conditions were determined as the method parameters needing to be optimized. Then according to the results of definitive screening design,three critical method attributes( CMAs) were identified,including peak number,the percentage of common peak area to total peak area,and retention time of the last peak.

[Research on quality standards of standard decoction of Fructus Corni piece].

This study aims to develop the quality standards of Fructus Corni piece standard decoction. Morroniside and loganin were considered as index components. The content determination method of morroniside and loganin were developed.

Which models are appropriate for six subtropical forests: species-area and species-abundance models.

The species-area relationship is one of the most important topic in the study of species diversity, conservation biology and landscape ecology. The species-area relationship curves describe the increase of species number with increasing area, and have been modeled by various equations. In this paper, we used detailed data from six 1-ha subtropical forest communities to fit three species-area relationship models.

[Values of matrix metalloproteinase-9 in early diagnosis and short-term prognosis of ST-segment elevation myocardial infarction].

Objective: To evaluate the early diagnostic value of matrix metalloproteinase-9 (MMP-9) level on admission for ST-segment elevation myocardial infarction (STEMI), explore the relationship between MMP-9 and global registry of acute coronary events (GRACE) scores and determine the values of MMP-9 in short-term prognosis of STEMI.

Methods: A total of 55 STEMI patients admitted into our hospital between September 2011 and February 2012 were recruited. There were early STEMI (≤ 4h of onset, n = 22) and late STEMI (> 4 h after onset, n = 33).