A transfer reaction and cluster-decay experiment,12C(16O,24Mg→ α+20Ne)α, was performed at a beam energy of 96 MeV. Both recoil and decay α particles were detected in coincidence, allowing us to deduce the energymo...A transfer reaction and cluster-decay experiment,12C(16O,24Mg→ α+20Ne)α, was performed at a beam energy of 96 MeV. Both recoil and decay α particles were detected in coincidence, allowing us to deduce the energymomentum of a20Ne fragment. A number of resonant states of24Mg were reconstructed up to an excitation energy of approximately 30 MeV. Owing to the experimentally achieved excellent resolutions of the Q-value and excitationenergy spectra, the relative decay widths for each resonant state in24Mg to various final states of20Ne were extracted, along with the total decay width. The obtained results provide good testing ground for theoretical descriptions of multiple clustering configurations in24Mg.展开更多
目的探讨PCOS患者血清DHEAS与肥胖及代谢异常的关系。方法选择在本院就诊的未经过药物治疗的PCOS患者199例,分别检测其BMI、血清DHEAS及空腹血糖、空腹胰岛素和血脂代谢相关指标,并对其进行统计分析。结果 DHEAS高值组的TT为(63.33±...目的探讨PCOS患者血清DHEAS与肥胖及代谢异常的关系。方法选择在本院就诊的未经过药物治疗的PCOS患者199例,分别检测其BMI、血清DHEAS及空腹血糖、空腹胰岛素和血脂代谢相关指标,并对其进行统计分析。结果 DHEAS高值组的TT为(63.33±24.57)ng/dl,Apo A I为(1.23±0.25)g/L;DHEAS低值组的TT为(54.37±25.52)ng/dl,Apo A I为(1.13±0.26)g/L,2组差异有统计学意义(P<0.05)。血清DHEAS水平与TT、SHBG、HDL-C和Apo A I水平呈正相关(r值分别为0.223、0.194、0.171、0.164,P<0.05),而与Apo B呈负相关(r=-0.150,P<0.05)。结论 DHEAS水平与脂类代谢参数相关联,与肥胖及糖、胰岛素代谢无关。展开更多
篇章关系研究,旨在推断同一篇章内相邻或跨度在一定范围内的文本片段之间的语义连接关系。语义连接关系对篇章内容理解和结构分析都具有重要作用,成为目前篇章分析领域的重点研究内容。该文针对三个中英文篇章关系研究领域的语料库:基...篇章关系研究,旨在推断同一篇章内相邻或跨度在一定范围内的文本片段之间的语义连接关系。语义连接关系对篇章内容理解和结构分析都具有重要作用,成为目前篇章分析领域的重点研究内容。该文针对三个中英文篇章关系研究领域的语料库:基于修辞结构理论的篇章树库(Rhetorical Structure Theory Discourse Treebank,RSTDT)、宾州篇章树库(Penn Discourse Treebank,PDTB)和哈尔滨工业大学中文篇章关系语料库(HIT Chinese Discourse Treebank,HIT-CDTB),主要介绍篇章关系分析理论的语料资源与研究背景、标注与评测体系以及国内外研究现状。此外,总结相关工作,指出目前篇章关系,尤其是隐式篇章关系研究的主要难题。展开更多
基金Supported by the National Key R&D Program of China (2018YFA0404403)the National Natural Science Foundation of China (11875074, 11875073, 12027809,11961141003, U1967201, 11775004, and 11775003)+1 种基金the Continuous Basic Scientific Research Project (WDJC-2019-13)the State Key Laboratory of Nuclear Physics and Technology,Peking University (NPT2020KFY10)。
文摘A transfer reaction and cluster-decay experiment,12C(16O,24Mg→ α+20Ne)α, was performed at a beam energy of 96 MeV. Both recoil and decay α particles were detected in coincidence, allowing us to deduce the energymomentum of a20Ne fragment. A number of resonant states of24Mg were reconstructed up to an excitation energy of approximately 30 MeV. Owing to the experimentally achieved excellent resolutions of the Q-value and excitationenergy spectra, the relative decay widths for each resonant state in24Mg to various final states of20Ne were extracted, along with the total decay width. The obtained results provide good testing ground for theoretical descriptions of multiple clustering configurations in24Mg.
文摘目的探讨PCOS患者血清DHEAS与肥胖及代谢异常的关系。方法选择在本院就诊的未经过药物治疗的PCOS患者199例,分别检测其BMI、血清DHEAS及空腹血糖、空腹胰岛素和血脂代谢相关指标,并对其进行统计分析。结果 DHEAS高值组的TT为(63.33±24.57)ng/dl,Apo A I为(1.23±0.25)g/L;DHEAS低值组的TT为(54.37±25.52)ng/dl,Apo A I为(1.13±0.26)g/L,2组差异有统计学意义(P<0.05)。血清DHEAS水平与TT、SHBG、HDL-C和Apo A I水平呈正相关(r值分别为0.223、0.194、0.171、0.164,P<0.05),而与Apo B呈负相关(r=-0.150,P<0.05)。结论 DHEAS水平与脂类代谢参数相关联,与肥胖及糖、胰岛素代谢无关。
文摘篇章关系研究,旨在推断同一篇章内相邻或跨度在一定范围内的文本片段之间的语义连接关系。语义连接关系对篇章内容理解和结构分析都具有重要作用,成为目前篇章分析领域的重点研究内容。该文针对三个中英文篇章关系研究领域的语料库:基于修辞结构理论的篇章树库(Rhetorical Structure Theory Discourse Treebank,RSTDT)、宾州篇章树库(Penn Discourse Treebank,PDTB)和哈尔滨工业大学中文篇章关系语料库(HIT Chinese Discourse Treebank,HIT-CDTB),主要介绍篇章关系分析理论的语料资源与研究背景、标注与评测体系以及国内外研究现状。此外,总结相关工作,指出目前篇章关系,尤其是隐式篇章关系研究的主要难题。
