The changes in density of M-cholinergic receptors in different areas of senile rats and the regulatory action of Huang Qi ([symbol: see text] Radix Astragali, a drug for warming yang and replenishing qi) were observed...The changes in density of M-cholinergic receptors in different areas of senile rats and the regulatory action of Huang Qi ([symbol: see text] Radix Astragali, a drug for warming yang and replenishing qi) were observed by autoradiography. The results showed that the gray scale displayed in brain sections was clear and mainly distributed in the cortex, hippocampus and striate body, while that due to nonspecific combination was negligible. The gray scale in the cortex, hippocampus and striate body of the experimental group was markedly lower than that in the young control rats, decreased respectively by 24.87%, 14.12% and 12.76% (all P展开更多
Introduction Rhabdoid meningioma （RM） is a special type of meningioma, The pathologic features of RM include sheets of rhabdoid tumor cells with or without the findings typical of conventional meningiomas. Since the...Introduction Rhabdoid meningioma （RM） is a special type of meningioma, The pathologic features of RM include sheets of rhabdoid tumor cells with or without the findings typical of conventional meningiomas. Since the disease is rare, and the histologic structure similar to that of other tumors, misdiagnosis and failure to include the entity in the differentiation can occur from time to time. In this article, the pathologic features and immunophenotype of RM are analyzed, in combination with analysis of a case treated at our institution and a review of the literature.展开更多
CEREBRAL aspergillosis is a rare and severe disorder with rapid progressive pathogenesis,and commonly seen in immunocompromised patients.1Typical cerebral aspergillosis presents abscess with ring enhancement or cortic...CEREBRAL aspergillosis is a rare and severe disorder with rapid progressive pathogenesis,and commonly seen in immunocompromised patients.1Typical cerebral aspergillosis presents abscess with ring enhancement or cortical or subcortical infactions on magnetic resonance(MR)images.In this communication,we describe a rare cerebral aspergillosis with relative characteristic MR imaging findings.展开更多
Corrosion of PC tendon embedded in concrete deteriorates performance of PC （prestressed concrete） members. Corrosion crack observed in pretensioned PC members is different from that in reinforced concrete and post t...Corrosion of PC tendon embedded in concrete deteriorates performance of PC （prestressed concrete） members. Corrosion crack observed in pretensioned PC members is different from that in reinforced concrete and post tensioned PC members. The purpose of this study is to clarify mechanisms of corrosion crack in pretensioned PC members. Contribution of compressive stress induced by prestressing force and arrangement of PC tendons on corrosion crack in pretensioned PC members is investigated through experiment and numerical analysis. Three dimensional finite element analyses were carried out to simulate corrosion crack in PC specimen. Based on the analytical and experimental results, the influencing factor of corrosion crack in pretensioned PC members is discussed. It was concluded that the contribution of compressive stress in concrete by prestressing force on corrosion crack is not significant and that the dominant reason for wider corrosion cracks in pretensioned PC members is the arrangement of PC tendons with small intervals.展开更多
文摘The changes in density of M-cholinergic receptors in different areas of senile rats and the regulatory action of Huang Qi ([symbol: see text] Radix Astragali, a drug for warming yang and replenishing qi) were observed by autoradiography. The results showed that the gray scale displayed in brain sections was clear and mainly distributed in the cortex, hippocampus and striate body, while that due to nonspecific combination was negligible. The gray scale in the cortex, hippocampus and striate body of the experimental group was markedly lower than that in the young control rats, decreased respectively by 24.87%, 14.12% and 12.76% (all P
文摘Introduction Rhabdoid meningioma （RM） is a special type of meningioma, The pathologic features of RM include sheets of rhabdoid tumor cells with or without the findings typical of conventional meningiomas. Since the disease is rare, and the histologic structure similar to that of other tumors, misdiagnosis and failure to include the entity in the differentiation can occur from time to time. In this article, the pathologic features and immunophenotype of RM are analyzed, in combination with analysis of a case treated at our institution and a review of the literature.
文摘CEREBRAL aspergillosis is a rare and severe disorder with rapid progressive pathogenesis,and commonly seen in immunocompromised patients.1Typical cerebral aspergillosis presents abscess with ring enhancement or cortical or subcortical infactions on magnetic resonance(MR)images.In this communication,we describe a rare cerebral aspergillosis with relative characteristic MR imaging findings.
文摘Corrosion of PC tendon embedded in concrete deteriorates performance of PC （prestressed concrete） members. Corrosion crack observed in pretensioned PC members is different from that in reinforced concrete and post tensioned PC members. The purpose of this study is to clarify mechanisms of corrosion crack in pretensioned PC members. Contribution of compressive stress induced by prestressing force and arrangement of PC tendons on corrosion crack in pretensioned PC members is investigated through experiment and numerical analysis. Three dimensional finite element analyses were carried out to simulate corrosion crack in PC specimen. Based on the analytical and experimental results, the influencing factor of corrosion crack in pretensioned PC members is discussed. It was concluded that the contribution of compressive stress in concrete by prestressing force on corrosion crack is not significant and that the dominant reason for wider corrosion cracks in pretensioned PC members is the arrangement of PC tendons with small intervals.
