INTRODUCTION Gestational trophoblastic neoplasia(GTN)is a group of malignant tumours caused by the abnormal proliferation of placental trophoblastic cells.It primarily includes invasive mole,choriocarcinoma,placental ...INTRODUCTION Gestational trophoblastic neoplasia(GTN)is a group of malignant tumours caused by the abnormal proliferation of placental trophoblastic cells.It primarily includes invasive mole,choriocarcinoma,placental site trophoblastic tumour and epithelioid trophoblastic tumour.展开更多
The recognition of headache by human being has gone through a long period of time.Headache was sorted into three kinds early in first century A.D. by Aretaeus(81-138),who named mild repeated headache as"cephalalg...The recognition of headache by human being has gone through a long period of time.Headache was sorted into three kinds early in first century A.D. by Aretaeus(81-138),who named mild repeated headache as"cephalalgia",frequently attacking chronic headache as"cephalaea",and unilateral severe headache"heterocrania".Christian Ludwig展开更多
The construction and operation of high-speed rail（HSR）grid within the past two decades in China,in terms of the scale,may be possibly comparable to any national-wide construction in the history of China,even the Gre...The construction and operation of high-speed rail（HSR）grid within the past two decades in China,in terms of the scale,may be possibly comparable to any national-wide construction in the history of China,even the Great Wall.By counting railways with commercial train service at the speed of200 km/h,China has the world’s longest HSR network with over 19 369.8 km of track in service today and this number展开更多
It is of strategical significance to exploit new medicines with Chinese features and with their patented rights phytechemistry will have great prospects in this aspect. This article briefly introduces the main researc...It is of strategical significance to exploit new medicines with Chinese features and with their patented rights phytechemistry will have great prospects in this aspect. This article briefly introduces the main research fields on phytochemistry and their significance, the present research situation in China, and suggests some concrete proposals on the development of the discipline in China.展开更多
Postpartum fatigue is an important issue that threatens women’s health.The incidence of postpartum fatigue is high.Failure to intervene in time may lead to adverse outcomes such as postpartum depression,premature ter...Postpartum fatigue is an important issue that threatens women’s health.The incidence of postpartum fatigue is high.Failure to intervene in time may lead to adverse outcomes such as postpartum depression,premature termination of breastfeeding,child abuse,and low infant development.This article reviews the concepts,characteristics,related factors,adverse effects,and interventions of postpartum fatigue.The aim is to improve doctors’and nurses’awareness of on postpartum fatigue in pregnant women,enrich the research content and methods,stimulate the interest of nurses,and actively carry out targeted intervention research to prevent or reduce the occurrence of adverse outcomes.展开更多
Nowadays,SiO_(2)based material is one of the widest used materials in optical,microelectromechanical system,aerospace and some other industries.In practical application,SiO_(2)based materials are required to be joined...Nowadays,SiO_(2)based material is one of the widest used materials in optical,microelectromechanical system,aerospace and some other industries.In practical application,SiO_(2)based materials are required to be joined with themselves or other heterogeneous materials to assemble products with various functions.And the joining quality directly affects the mechanical performances and functional properties of assembled products.Though many researchers studied different joining technologies,explored the microstructure of joining interface and tested after-joining properties,a review that summarizes the recent cutting-edge researches and development tendency of joining technologies for SiO_(2)based ceramics is still absent.Therefore,according to different applications and requirements,this review summarizes the widely used joining technologies and discusses corresponding joining mechanisms,current research progress and suitable applications.Due to the wide applications in specific industry,laser welding,anodic bonding and wafer bonding are discussed in detail.Further,brazing,the widest used method in SiO_(2)joining,has been elaborated deeply in its wetting mechanism,residual stress control,interfacial microstructure and mechanical performance aspects.In the end,this review proposed the future development trends of SiO_(2)ceramics joining,aiming at offering a full-view of potential improvements in SiO_(2)ceramic joining technologies.展开更多
目的探讨经颅直流电刺激(transcranial direct current stimulation,t DCS)辅助渐进式放松训练治疗老年失眠症伴焦虑的疗效。方法选取内蒙古自治区精神卫生中心2022年5月~2024年5月收治的老年失眠症伴焦虑患者60例,按随机数表法分为对照...目的探讨经颅直流电刺激(transcranial direct current stimulation,t DCS)辅助渐进式放松训练治疗老年失眠症伴焦虑的疗效。方法选取内蒙古自治区精神卫生中心2022年5月~2024年5月收治的老年失眠症伴焦虑患者60例,按随机数表法分为对照组(30例)、研究组(30例);对照组予渐进式放松训练治疗,研究组予tDCS联合渐进式放松训练治疗;对比两组的治疗效果、多导睡眠(Polysomnography,PSG)监测指标、睡眠质量及焦虑情绪。结果研究组总治疗有效率较对照组高(P<0.05);治疗2周,研究组睡眠效率(Sleep efficiency,SE)、睡眠总时间(Total Sleep Time,TST)、快速眼动(Rapid Eye Movement,REM)睡眠占总睡眠百分比较对照组高,觉醒次数、匹兹堡睡眠质量指数(Pittsburgh sleep quality index,PSQI)评分、汉密尔顿焦虑量表(Hamilton Anxiety Scale,HAMA)评分较对照组低(P<0.05)。结论老年失眠症伴焦虑患者采用tDCS联合渐进式放松训练治疗效果较好,可改善睡眠状况,减轻焦虑情绪。展开更多
针对传统弱电工程施工进度管理中信息滞后、资源浪费等问题,文章探讨了智能化系统在施工进度监控、风险预警及资源调配中的应用。通过构建“物联网+建筑信息模型(Building Information Modeling,BIM)+智能算法”技术架构,集成超宽带射...针对传统弱电工程施工进度管理中信息滞后、资源浪费等问题,文章探讨了智能化系统在施工进度监控、风险预警及资源调配中的应用。通过构建“物联网+建筑信息模型(Building Information Modeling,BIM)+智能算法”技术架构,集成超宽带射频识别(Ultra Wideband-Radio Frequency Identification,UWB-RFID)定位、点云语义分割算法及计划评审技术(Program Evaluation and Review Technique,PERT)网络分析法,可实现进度动态预测与精准调控。引入时序约束网络优化关键路径,采用多目标混合整数规划模型以提升资源调度效率。数据表明,智能化系统可使进度偏差率从15%降至4%、返工率降低37.1%、工时利用率提升至89%、设备故障延误减少80%。当前面临多源数据融合效率低、算力不足等挑战,建议通过“技术链-标准链-人才链”融合战略实现突破。研究证实,智能化系统通过数据驱动与算法赋能,显著提升施工效率与管理精细化水平,为建筑行业数字化转型提供实践范式。展开更多
基金supported by the National Key R&D National Key Research and Development Program of China(grant number 2023YFC2705803).
文摘INTRODUCTION Gestational trophoblastic neoplasia(GTN)is a group of malignant tumours caused by the abnormal proliferation of placental trophoblastic cells.It primarily includes invasive mole,choriocarcinoma,placental site trophoblastic tumour and epithelioid trophoblastic tumour.
文摘The recognition of headache by human being has gone through a long period of time.Headache was sorted into three kinds early in first century A.D. by Aretaeus(81-138),who named mild repeated headache as"cephalalgia",frequently attacking chronic headache as"cephalaea",and unilateral severe headache"heterocrania".Christian Ludwig
文摘The construction and operation of high-speed rail（HSR）grid within the past two decades in China,in terms of the scale,may be possibly comparable to any national-wide construction in the history of China,even the Great Wall.By counting railways with commercial train service at the speed of200 km/h,China has the world’s longest HSR network with over 19 369.8 km of track in service today and this number
文摘It is of strategical significance to exploit new medicines with Chinese features and with their patented rights phytechemistry will have great prospects in this aspect. This article briefly introduces the main research fields on phytochemistry and their significance, the present research situation in China, and suggests some concrete proposals on the development of the discipline in China.
文摘Postpartum fatigue is an important issue that threatens women’s health.The incidence of postpartum fatigue is high.Failure to intervene in time may lead to adverse outcomes such as postpartum depression,premature termination of breastfeeding,child abuse,and low infant development.This article reviews the concepts,characteristics,related factors,adverse effects,and interventions of postpartum fatigue.The aim is to improve doctors’and nurses’awareness of on postpartum fatigue in pregnant women,enrich the research content and methods,stimulate the interest of nurses,and actively carry out targeted intervention research to prevent or reduce the occurrence of adverse outcomes.
基金the National Natural Science Foundation of China(Grant Nos 51575135,51622503)Natural Science Foundation of Heilongjiang Province of China(YQ2019E023)。
文摘Nowadays,SiO_(2)based material is one of the widest used materials in optical,microelectromechanical system,aerospace and some other industries.In practical application,SiO_(2)based materials are required to be joined with themselves or other heterogeneous materials to assemble products with various functions.And the joining quality directly affects the mechanical performances and functional properties of assembled products.Though many researchers studied different joining technologies,explored the microstructure of joining interface and tested after-joining properties,a review that summarizes the recent cutting-edge researches and development tendency of joining technologies for SiO_(2)based ceramics is still absent.Therefore,according to different applications and requirements,this review summarizes the widely used joining technologies and discusses corresponding joining mechanisms,current research progress and suitable applications.Due to the wide applications in specific industry,laser welding,anodic bonding and wafer bonding are discussed in detail.Further,brazing,the widest used method in SiO_(2)joining,has been elaborated deeply in its wetting mechanism,residual stress control,interfacial microstructure and mechanical performance aspects.In the end,this review proposed the future development trends of SiO_(2)ceramics joining,aiming at offering a full-view of potential improvements in SiO_(2)ceramic joining technologies.
文摘针对传统弱电工程施工进度管理中信息滞后、资源浪费等问题,文章探讨了智能化系统在施工进度监控、风险预警及资源调配中的应用。通过构建“物联网+建筑信息模型(Building Information Modeling,BIM)+智能算法”技术架构,集成超宽带射频识别(Ultra Wideband-Radio Frequency Identification,UWB-RFID)定位、点云语义分割算法及计划评审技术(Program Evaluation and Review Technique,PERT)网络分析法,可实现进度动态预测与精准调控。引入时序约束网络优化关键路径,采用多目标混合整数规划模型以提升资源调度效率。数据表明,智能化系统可使进度偏差率从15%降至4%、返工率降低37.1%、工时利用率提升至89%、设备故障延误减少80%。当前面临多源数据融合效率低、算力不足等挑战,建议通过“技术链-标准链-人才链”融合战略实现突破。研究证实,智能化系统通过数据驱动与算法赋能,显著提升施工效率与管理精细化水平,为建筑行业数字化转型提供实践范式。
