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It is now believed that in the origin of life, proteins should have been "invented" in an RNA world. However, due to the complexity of a possible RNA-based proto-translation system, this evolving process seems quite complicated and the associated scenario remains very blurry. Considering that RNA can bind amino acids with specificity, it has been reasonably(More)
A novel in situ analytic approach was constructed by means of ion sputtering, decalcification and deprotein techniques combining with scanning electron microscopy (SEM) and transmission electron microscope (TEM) ultrastructural analysis. The method was employed to determine the spatial distribution of the organic framework outside and the inner crystal and(More)
BACKGROUND Mismatch negativity (MMN) and P3a components are sequential and co-occur. MMN represents the pre-attentive index of deviance detection and P3a represents the attention orienting response. Major depressive disorder (MDD) is characterized by impaired pre-attentive information processing. To assess whether impaired pre-attentive information(More)
Mental rotation (MR) performance provides a direct insight into a prototypical higher-level visuo-spatial cognitive operation. Previous studies suggest that progressive slowing with an increasing angle of orientation indicates a specific wing of object-based mental transformations in the psychomotor retardation that occurs in major depressive disorder(More)
Sparse adaptive channel estimation problem is one of the most important topics in broadband wireless communications systems due to its simplicity and robustness. So far many sparsity-aware channel estimation algorithms have been developed based on the well-known minimum mean square error (MMSE) criterion, such as the zero-attracting least mean square(More)
BACKGROUND States of depression are associated with increased sensitivity to negative events. For this novel study, we have assessed the relationship between the number of depressive episodes and the dysfunctional processing of emotional facial expressions. METHODOLOGY/PRINCIPAL FINDINGS We used a visual emotional oddball paradigm to manipulate the(More)
BACKGROUND Despite the meridian system being an important concept in Traditional Chinese Medicine (TCM), modern biology and Western medical systems have failed to find an anatomic substrate. Since the 1960s, a variety of phenomena along meridians have been reported, among which quite a few suggest that along meridians there is a fluid pathway (but not blood(More)
BACKGROUND The ability to mentally rotate images is impaired in depressed patients but the electrophysiological abnormalities in the brain related to this impairment remain unclear. AIM To compare the event-related potentials (ERPs) of depressed patients and control subjects during the completion of a mental rotation (MR) task. METHODS Thirty-two(More)
Reversing the respiratory depression induced by carfentanil involves intravenous administration of naloxone or naltrexone, but this treatment has disadvantages. Hence, finding a more appropriate treatment to counter the depressive actions of carfentanil is needed. In the present study, with the naloxone as a control, we investigated the efficacy of(More)