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激光声表面波技术在材料加工表面损伤检测中的应用
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作者 李杰 胡沛静 陈晨 《实验室检测》 2024年第7期38-40,共3页
激光声表面波技术是一种新兴的无损检测方法,在材料加工表面损伤评估中展现出独特优势。本文重点探讨了该技术在表面裂纹、粗糙度和热损伤定量表征方面的应用。通过激光激发表面波并分析其传播特性,实现了高灵敏度、强定量化能力的损伤... 激光声表面波技术是一种新兴的无损检测方法,在材料加工表面损伤评估中展现出独特优势。本文重点探讨了该技术在表面裂纹、粗糙度和热损伤定量表征方面的应用。通过激光激发表面波并分析其传播特性,实现了高灵敏度、强定量化能力的损伤检测。优化激励-接收方案和信号处理算法,可进一步提升检测性能。实验研究表明,表面波的时频域特征参数与损伤量纲间存在确定性关联,为工程应用奠定了基础。 展开更多
关键词 激光声表面波 无损检测 表面损伤 材料加工 定量表征
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媒介融合背景下电视舞蹈节目的创新表达与传播研究——以河南卫视“中国节日”系列舞蹈为例 被引量:6
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作者 胡沛静 许海燕 《铜陵学院学报》 2022年第2期94-97,共4页
河南卫视近年推出的“中国节日”系列节目为电视舞蹈节目的创新与传播提供了新参考。“中国节日”系列舞蹈节目成功的关键之处在于节目主题清晰,依托舞蹈展现传统文化;节目内容充实,多角度展示中华美学;节目理念革新,多维度讲述中国故... 河南卫视近年推出的“中国节日”系列节目为电视舞蹈节目的创新与传播提供了新参考。“中国节日”系列舞蹈节目成功的关键之处在于节目主题清晰,依托舞蹈展现传统文化;节目内容充实,多角度展示中华美学;节目理念革新,多维度讲述中国故事。“中国节日”系列舞蹈节目打破了传统节目的固有形态与编排法则,打造“中国节日”文化IP,同时有力地促使年轻观众的审美价值回归,引领新时代精神。 展开更多
关键词 媒介融合 电视舞蹈 传统文化
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多指标联合对急诊经皮冠脉介入治疗的急性ST段抬高型心肌梗死患者发生主要心血管不良事件的预测 被引量:11
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作者 张学丹 马爱群 +3 位作者 王西辉 李鑫 胡培静 杜占奎 《中国分子心脏病学杂志》 CAS 2021年第5期4209-4212,共4页
目的探讨全球急性冠脉事件登记(GRACE)评分、应激高血糖和N末端脑钠肽前体(NT-pro-BNP)对急诊经皮冠脉介入(PCI)治疗的急性ST段抬高型心肌梗死(STEMI)患者发生主要心血管不良事件(MACEs)的预测价值,为STEMI患者临床诊疗中早期风险分层... 目的探讨全球急性冠脉事件登记(GRACE)评分、应激高血糖和N末端脑钠肽前体(NT-pro-BNP)对急诊经皮冠脉介入(PCI)治疗的急性ST段抬高型心肌梗死(STEMI)患者发生主要心血管不良事件(MACEs)的预测价值,为STEMI患者临床诊疗中早期风险分层和预后判断寻找更好的方法,为患者制定最佳个体化治疗策略提供可靠的临床依据。方法本研究最终纳入342例急诊PCI的STEMI患者,在1年的随访中有88例患者出现MACEs。采用多因素Cox回归分析评估各危险因素对MACEs的预测价值。进一步用受试者操作特征(ROC)曲线计算曲线下的面积(AUC)。结果以性别、GRACE评分、入院随机血糖、NT-pro-BNP、吸烟、冠心病、高血压、糖尿病、脑卒中和冠状动脉血管病变(单支病变、双支病变、三支病变)、发病时间和用药情况作为协变量,MACEs作为状态变量,进行多因素Cox回归分析显示,GRACE评分、入院随机血糖、lgNT-pro-BNP是急诊PCI的STEMI患者发生MACEs的独立预测因子。根据AUC计算的入院随机血糖、GRACE评分、NT-pro-BNP及三指标联合对STEMI患者MACEs的预测值分别是0.694、0.758、0.732和0.813。结论GRACE评分、入院随机血糖、NT-pro-BNP对急诊PCI的STEMI患者1年后MACEs有独立的预测价值。联合GRACE评分、入院随机血糖、NT-proBNP可进一步提高对急诊PCI的STEMI患者MACEs的预测价值。 展开更多
关键词 全球急性冠脉事件登记(GRACE)评分 随机血糖 N末端脑钠肽前体 急性ST段抬高型心肌梗死 预后 经皮冠脉介入
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Application of N-terminal pro-brain natriuretic peptide concentration and the Global Registry of Acute Coronary Events risk score to predict major adverse cardiac events in patients with ST-elevation myocardial infarction after PCI 被引量:1
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作者 ZHANG Xue-dan WANG Xi-hui +1 位作者 hu pei-jing DU Zhan-kui 《South China Journal of Cardiology》 CAS 2021年第3期171-176,190,共7页
Identifying patients with high risk of death after myocardial infarction is a cornerstone of modern cardiovascular health care.The purpose of this study was to explore the predictive ability of N-terminal probrain nat... Identifying patients with high risk of death after myocardial infarction is a cornerstone of modern cardiovascular health care.The purpose of this study was to explore the predictive ability of N-terminal probrain natriuretic peptide(NT-pro-BNP)concentration and global acute coronary event register(GRACE)risk score in the prognosis of ST-segment elevation myocardial infarction(STEMI)patients,to find a better method for early risk stratification and prognosis judgment in the clinical diagnosis and treatment of STEMI patients,and to provide reliable clinical basis for making the best individualized treatment strategies for patients.Methods The final analysis included 118 confirmed STEMI patients who had received acute percutaneous coronary intervention(PCI).Thirty patients with STEMI were included in the major cardiac adverse events(MACEs)group,and the rest were included in the non-MACEs group.Multivariate Cox regression analysis was used to assess the relationship between the risk factors and MACEs.The receiver operator curves(ROC)were used to determine the area under the statistical curve(AUC).The linear correlation analysis confirmed the relationship between NT-proBNP concentration and GRACE score.Results After adjustment for sex,history of current smoking,hypertension,diabetes mellitus,cerebral artery disease and coronary artery vessel lesion(single-vessel lesion,2-vessel lesion,3-vessel lesion),onset time and medication,the multivariate Cox’s regression analysis showed that NT-proBNP concentration and GRACE score were the independent predictors for MACEs in STEMI patients who received PCI.Linear regression analysis showed that the level of NT-pro-BNP was positively correlated with GRACE score(r=0.612,P=0.000).The area under the curve(AUC)for GRACE,NT-pro-BNP and their combination were 0.757,0.723 and 0.782,respectively.Conclusions In a one-year follow-up,the concentration of NTpro-BNP and GRACE score were valuable of prediction for MACEs in STEMI patients who received PCI.In addition,NT-pro-BNP concentration was positively correlated with GRACE score.Additionally,the concentration of NT-pro-BNP could moderately enhance the GRACE score prediction of 1-year MACEs in STEMI patients who received PCI. 展开更多
关键词 acute myocardial infarction ST-elevation myocardial infarction N-terminal-pro-brian natriuretic peptide GRACE prediction MACEs
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