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As the frequency range of electronic devices gradually expands, exploring frequency insensitive electromagnetic wave adsorption (EWA) materials that can achieve effective absorption in all bands has aroused great interest. A series of Fe1 − xS@C composite materials with three-dimensional conductive networks were successfully prepared in this work. In the preparation process, poly (aryl ether sulfone) with branched carboxylic (PAES-C) was selected as the skeleton and Fe3+ ions were introduced via chemical adsorption. The main purpose of this work was to develop array porous composite materials with good EWA property. The work proposed a novel controllable method for preparing metal sulfides to explore the electromagnetic wave absorption. This routine was also developed to prepare other MxS@C composites (M = Fe, Cu, Mn). Compared to MnxS@C and CuxS@C composites, the RLmin value of Fe1 − xS@C-4 was − 40.6 dB at 13.52 GHz, and at a thickness of 1.5 mm the effective bandwidth reached 3.12 GHz. Furthermore, its effective absorption band covered Ku, X, and C radar bands at different thicknesses. Highlights: •MxS@C composites (M = Fe, Cu, Mn) are prepared for electromagnetic wave absorption. •A new research method for the synthesis of metal sulfides. •The RLmin of Fe1 − xS@C-4 is -40.6 dB, and the effective bandwidth of 3.12 GHz at 1.5 mm. •The absorption band of Fe1 − xS@C composites covered Ku, X, and C radar bands at different thicknesses. [ABSTRACT FROM AUTHOR]

Cortical neural dynamics mediate information processing for the cerebral cortex, which is implicated in fundamental biological processes such as vision and olfaction, in addition to neurological and psychiatric diseases. Spontaneous pain is a key feature of human neuropathic pain. Whether spontaneous pain pushes the cortical network into an aberrant state and, if so, whether it can be brought back to a 'normal' operating range to ameliorate pain are unknown. Using a clinically relevant mouse model of neuropathic pain with spontaneous pain-like behavior, we report that orofacial spontaneous pain activated a specific area within the primary somatosensory cortex (S1), displaying synchronized neural dynamics revealed by intravital two-photon calcium imaging. This synchronization was underpinned by local GABAergic interneuron hypoactivity. Pain-induced cortical synchronization could be attenuated by manipulating local S1 networks or clinically effective pain therapies. Specifically, both chemogenetic inhibition of pain-related c-Fos-expressing neurons and selective activation of GABAergic interneurons significantly attenuated S1 synchronization. Clinically effective pain therapies including carbamazepine and nerve root decompression could also dampen S1 synchronization. More important, restoring a 'normal' range of neural dynamics through attenuation of pain-induced S1 synchronization alleviated pain-like behavior. These results suggest that spontaneous pain pushed the S1 regional network into a synchronized state, whereas reversal of this synchronization alleviated pain., Introduction Although the functions of cortical circuits vary dramatically between brain regions and species, general principles have been found that constrain neural dynamics to stable activity regimes. For example, sleep, [...]

Loneliness is a prevalent issue among rural left-behind children in China, adversely affecting their physical and mental well-being, as well as social stability. However, the influencing factors and potential mechanisms of loneliness have not yet been fully clarified. This study aims to validate the mediating roles of social anxiety and psychological resilience by examining the association between affective/cognitive empathy and loneliness among Chinese rural left-behind children. Methods: This cross-sectional survey employed a convenience sampling approach among Chinese left-behind children. A total of 540 participants aged 6 to 11 years old (Average age = 8.54, SD = 1.682) from 3 primary schools in Hunan Province completed the Children's Loneliness Scale, Social Anxiety Scale for Children, The Chinese version of Connor-Davidson Resilience Scale, and Basic Empathy Scale. Data analysis was conducted using SPSS 27.0, Origin 2020, and Mplus 8.3. Results: Pearson correlation analyses suggested strong significant correlations among affective/cognitive empathy, loneliness, social anxiety, and psychological resilience. Path analyses indicated that the chain mediation effect size of social anxiety and psychological resilience was 0.016 between affective empathy and loneliness, while the chain mediation effect size between cognitive empathy and loneliness was − 0.011. Conclusion: Affective empathy positively correlates with loneliness among Chinese left-behind children through social anxiety and resilience, while cognitive empathy negatively correlates with loneliness. These findings suggest that left-behind children should enhance their cognitive empathy and psychological resilience to reduce their social anxiety, thereby mitigating their loneliness. [ABSTRACT FROM AUTHOR]

Aging is generally associated with declining somatosensory function, which seems at odds with the high prevalence of chronic pain in older people. This discrepancy is partly related to the high prevalence of degenerative diseases such as osteoarthritis in older people. However, whether aging alters pain processing in the primary somatosensory cortex (S1), and if so, whether it promotes pain chronification is largely unknown. Herein, we report that older mice displayed prolonged nociceptive behavior following nerve injury when compared with mature adult mice. The expression of peroxisome proliferator‐activated receptor‐gamma coactivator‐1α (PGC‐1α) in S1 was decreased in older mice, whereas PGC‐1α haploinsufficiency promoted prolonged nociceptive behavior after nerve injury. Both aging and PGC‐1α haploinsufficiency led to abnormal S1 neural dynamics, revealed by intravital two‐photon calcium imaging. Manipulating S1 neural dynamics affected nociceptive behavior after nerve injury: chemogenetic inhibition of S1 interneurons aggravated nociceptive behavior in naive mice; chemogenetic activation of S1 interneurons alleviated nociceptive behavior in older mice. More interestingly, adeno‐associated virus‐mediated expression of PGC‐1α in S1 interneurons ameliorated aging‐associated chronification of nociceptive behavior as well as aging‐related S1 neural dynamic changes. Taken together, our results showed that aging‐associated decrease of PGC‐1α promotes pain chronification, which might be harnessed to alleviate the burden of chronic pain in older individuals. [ABSTRACT FROM AUTHOR]

This article discusses the recent improvements in China-US relations, noting that both countries have made adjustments to their policies and engaged in dialogue. The relationship is described as a mixture of containment, competition, and cooperation, with the US focusing on competition while China seeks mutual respect and cooperation. The article acknowledges the challenges faced by the relationship and emphasizes the importance of communication, understanding, and managing differences. It concludes by suggesting that China should prepare for long-term rivalry with the US while utilizing short-term opportunities for constructive interaction. [Extracted from the article]

The recovery ratio is an important indicator to evaluate the effectiveness and performance of oilfield development. In order to clarify the key factors of oilfield recovery ratio in the stage of super-high water cut, 9 dynamic indicators of 12 blocks are analyzed in heavy oil reservoir of eastern China in application of reservoir engineering principles and statistical analysis methods. The results show that the four key factors of recovery are the well density, the ratio of producing wells and injecting wells, net cumulative injecting rate and the bottom hole flow pressure, and the weight of each indicator is quantified. In the horizontal contrast, comprehensive forecasting target recovery is compared with the current recovery by the dynamic method to determine according to typical block BXD. Four of important factors are discussed for the previous trend and the countermeasures of according adjustment are put forward. The proposed method and the results have a certain reference value of the theoretical research and practical application in the stage of super-high water cut oil-field.