Strong magnetic anisotropy in PrRu2Ga8and PrCo2Al8single crystals.

Single crystals ofLnRu2Ga8andLnCo2Al8(Ln= La and Pr) were grown using a Ga/Al self-flux method. An orthorhombic CaCo2Al8-type structure with space groupPbam(No.55) of them was identified by x-ray diffraction. LaRu2Ga8and LaCo2Al8are Pauli paramagnetic down to 2 K, while PrRu2Ga8and PrCo2Al8show antiferromagnetic (AFM) order at 2.5 and 5 K, respectively. Strong magnetic anisotropy in PrRu2Ga8and PrCo2Al8single crystals was found by an anisotropic magnetic measurement. The field-induced FM state was observed in both PrRu2Ga8and PrCo2Al8forH||c. However, in the case of H⊥c, the AFM state is robust. The strong magnetic anisotropy in PrRu2Ga8FM and PrCo2Al8is due to their anisotropic magnetic interactions that FM interactions are dominant in the case ofH||cwhile AFM interactions forH⊥c.

Analysis of the Influence of the Psychology Changes of Fear Induced by the COVID-19 Epidemic on the Body.

In this paper, the theory of " Fear injury kidney " in traditional Chinese medicine is systematically reviewed, and it is found that long-term or excessive psychological changes of fear are likely to damage kidney qi and kidney essence. On this basis, the psychological studies of patients, medical staff and the public during the COVID-19 epidemic in China were analyzed, and fear psychology was found to be prevalent among all kinds of people. Modern researches on "Fear injury kidney" have also found that long-term or excessive fear could cause changes in the neuro-endocrine-immune system, which can induce diseases or susceptibility to some diseases. Therefore, during or after the prevalence of COVID-19, different groups of people may have emotional reactions such as stress and fear, which should be paid long-term attention, and the influence of fear on the body cannot be ignored. According to the change rule of psychological state under stress reaction, we should actively respond to and take psychological crisis intervention measures in time to reduce the harm of psychological stress to the body.

Semantic composition of sentences word by word: MEG evidence for shared processing of conceptual and logical elements.

Human language is a mixture of many types of elements, some clearly conceptual, like dog and run, and others more functional/logical, such as negation or quantificational elements (not, many, all). While theories are emerging for the neurobiology of conceptual combination, the neural mechanisms of integrating concepts with logical information remain largely unstudied. Do neural correlates of concept composition also reflect the composition of concepts with logical elements? In a previous MEG study, we have shown that in noun-noun compounds (e.g., tomato soup), the conceptual specificity of the first word modulates left anterior temporal lobe (LATL) amplitudes elicited on the second word, suggesting an effect of conceptual specificity, or informativeness, on the process of conceptual combination. Here we tested how this pattern is affected by negation, which has the ability to reverse informativeness relations: for example, while poodle is conceptually more informative than dog, no dog negates more possibilities and is therefore more informative than no poodle. We manipulated the informativeness of sentential subjects by fully crossing conceptual specificity (poodle vs. dog) with the presence of negation (no vs. a) to create positive and negative sentences (e.g., no/a-(green)-lizard-is-sleeping) and tested whether the effect of conceptual specificity was reversed for the integration of negative as compared to positive subjects. Exactly this pattern was observed in the LATL and surrounding fronto-temporal cortex during the processing of the sentence-final verb, suggesting a shared mechanism that tracks informativeness in integrating conceptual and logical elements in this network.