目的基于文献分析探讨宫腔镜下粘连分离术后辅助治疗技术的研究现状、热点及发展趋势。方法计算机检索中国知网和Web of Science核心数据库建库至2025年3月有关宫腔镜下粘连分离术后辅助治疗技术研究文献,采用CiteSpace对纳入文献的发...目的基于文献分析探讨宫腔镜下粘连分离术后辅助治疗技术的研究现状、热点及发展趋势。方法计算机检索中国知网和Web of Science核心数据库建库至2025年3月有关宫腔镜下粘连分离术后辅助治疗技术研究文献,采用CiteSpace对纳入文献的发文量、发文机构、作者、关键词进行计量学分析,探讨相关领域的研究现状。结果经筛选得到中文有效文献845篇,英文有效文献136篇,发现9个聚类标签和20个突显关键词,该领域年发文量总体呈现上升态势。结论宫腔镜下粘连分离术后辅助治疗技术研究态势良好,雌激素、补肾活血汤等中西医治疗手段效果显著。展开更多
Landslide is the second largest natural disaster after earthquake. It is of significance to study the evolution laws and failure mechanism of landslides based on its surface 3D deformation information. Based on the ra...Landslide is the second largest natural disaster after earthquake. It is of significance to study the evolution laws and failure mechanism of landslides based on its surface 3D deformation information. Based on the rainfall-triggered waste dump instability model test, we studied the failure mechanisms of the waste dump by integrating surface deformation and internal slope stress and proposed novel parameters for identifying landslide stability. We developed a noncontact measurement device, which can obtain millimeter-level 3D deformation data for surface scene in physical model test;Then we developed the similar materials and established a test model for a waste dump. Based on the failure characteristics of slope surface, internal stress of slope body and displacement contours during the whole process, we divided the slope instability process in model test into four stages: rainfall infiltration and surface erosion, shallow sliding, deep sliding, and overall instability. Based on the obtained surface deformation data, we calculated the volume change during slope instability process and compared it with the point displacement on slope surface. The results showed that the volume change can not only reflect the slow-ultra acceleration process of slope failure, but also fully reflect the above four stages and reduce the fluctuations caused by random factors. Finally, this paper proposed two stability identification parameters: the volume change rate above the slip surface and the relative velocity of volume change rate. According to the calculation of these two parameters in model test, they can be used for study the deformation and failure mechanism of slope stability.展开更多
Investigations into the distribution of neutron and proton densities were conducted within the Skyrme-Hartree-Fock-Bogoliubov(SHFB)framework.It was observed that nucleon orbitals with lower angular quantum numbers are...Investigations into the distribution of neutron and proton densities were conducted within the Skyrme-Hartree-Fock-Bogoliubov(SHFB)framework.It was observed that nucleon orbitals with lower angular quantum numbers are predominantly located inside the nucleus,whereas those with higher angular quantum numbers tend to be distributed more towards the outer regions.Additionally,this study reveals that the difference in the neutron skins of Ru and Zr can be attributed to the distinct contributions of neutron and proton orbitals.Our findings may introduce a novel approach to studying the distribution of nucleon orbitals through relativistic isobaric collisions.展开更多
文摘目的基于文献分析探讨宫腔镜下粘连分离术后辅助治疗技术的研究现状、热点及发展趋势。方法计算机检索中国知网和Web of Science核心数据库建库至2025年3月有关宫腔镜下粘连分离术后辅助治疗技术研究文献,采用CiteSpace对纳入文献的发文量、发文机构、作者、关键词进行计量学分析,探讨相关领域的研究现状。结果经筛选得到中文有效文献845篇,英文有效文献136篇,发现9个聚类标签和20个突显关键词,该领域年发文量总体呈现上升态势。结论宫腔镜下粘连分离术后辅助治疗技术研究态势良好,雌激素、补肾活血汤等中西医治疗手段效果显著。
基金funded by the National Key R&D Program of China (Grant No. 2021YFB3901402)the Fundamental Research Funds for the Central Universities (Project No. 2022CDJKYJH037)。
文摘Landslide is the second largest natural disaster after earthquake. It is of significance to study the evolution laws and failure mechanism of landslides based on its surface 3D deformation information. Based on the rainfall-triggered waste dump instability model test, we studied the failure mechanisms of the waste dump by integrating surface deformation and internal slope stress and proposed novel parameters for identifying landslide stability. We developed a noncontact measurement device, which can obtain millimeter-level 3D deformation data for surface scene in physical model test;Then we developed the similar materials and established a test model for a waste dump. Based on the failure characteristics of slope surface, internal stress of slope body and displacement contours during the whole process, we divided the slope instability process in model test into four stages: rainfall infiltration and surface erosion, shallow sliding, deep sliding, and overall instability. Based on the obtained surface deformation data, we calculated the volume change during slope instability process and compared it with the point displacement on slope surface. The results showed that the volume change can not only reflect the slow-ultra acceleration process of slope failure, but also fully reflect the above four stages and reduce the fluctuations caused by random factors. Finally, this paper proposed two stability identification parameters: the volume change rate above the slip surface and the relative velocity of volume change rate. According to the calculation of these two parameters in model test, they can be used for study the deformation and failure mechanism of slope stability.
文摘Investigations into the distribution of neutron and proton densities were conducted within the Skyrme-Hartree-Fock-Bogoliubov(SHFB)framework.It was observed that nucleon orbitals with lower angular quantum numbers are predominantly located inside the nucleus,whereas those with higher angular quantum numbers tend to be distributed more towards the outer regions.Additionally,this study reveals that the difference in the neutron skins of Ru and Zr can be attributed to the distinct contributions of neutron and proton orbitals.Our findings may introduce a novel approach to studying the distribution of nucleon orbitals through relativistic isobaric collisions.
