目的:探究早发型重度子痫前期(SPE)患者胎盘生长因子(PIGF)表达及与妊娠结局关系。方法:选取2017年1月-2018年12月本院收治的80例早发型SPE患者(观察组)及100例正常孕妇(对照组),检测两组分娩当日血浆PIGF水平并观察临床相关指标,依据P...目的:探究早发型重度子痫前期(SPE)患者胎盘生长因子(PIGF)表达及与妊娠结局关系。方法:选取2017年1月-2018年12月本院收治的80例早发型SPE患者(观察组)及100例正常孕妇(对照组),检测两组分娩当日血浆PIGF水平并观察临床相关指标,依据PIGF水平分为PIGF异常组和正常组,分析早发型SPE孕妇PIGF水平及与妊娠结局关系。结果:观察组血浆PIGF水平低于对照组,SBP、DBP、S/D高于对照组(均P<0.05);早发型SPE孕妇中PIGF异常率为51.3%,PIGF异常组新生儿出生孕周、出生体重、胎盘重量、1 min Apgar评分均低于PIGF正常组,LAC、S/D高于PIGF正常组(P<0.05)。相关性分析发现,早发型SPE孕妇PIGF表达水平与SBP、DBP、脐动脉S/D呈负相关,与新生儿出生体重、1 min Apgar评分呈正相关(均P<0.05)。结论:早发型SPE孕妇PIGF表达水平与妊娠结局关系密切,PIGF对预测妊娠结局有一定临床价值,需加强关注。展开更多
Large area plastic scintillation detectors are applied widely in modern physics labs due to the development of the time-of-flight technique. They are usually constructed with a module array design, such as the TOF Wal...Large area plastic scintillation detectors are applied widely in modern physics labs due to the development of the time-of-flight technique. They are usually constructed with a module array design, such as the TOF Wall. The performance of such detectors is excellent, but the number of electronics channels is quite large, and the operation and calibration are too complicated. As a result, a large area plastic scintillation detector with only 4 readout signals from the corners is constructed and developed as a simple TOF Wall at ETF in IMP.展开更多
The progress of research going on in Group of Rare Isotope Beam Physics (RIB), Experimental Physics Research Center, in 2015 is in the following two aspects. Construction of the plastic scintillator detector array (PS...The progress of research going on in Group of Rare Isotope Beam Physics (RIB), Experimental Physics Research Center, in 2015 is in the following two aspects. Construction of the plastic scintillator detector array (PSD) for the DArk Matter Particle Explorer (DAMPE) project.DAMPE is part of the “Strategic Priority Research Program” of the Chinese Academy of Science for space science, and it is a large space telescope aimed for the evidence of dark matter existence through the measurements of their decay products.展开更多
Knockout reactions at intermediate and high energies have been proved to be a powerful tool for probing thesingle-particle structure of rare isotopes[1]. The spectroscopic factors and orbital angular momenta of the re...Knockout reactions at intermediate and high energies have been proved to be a powerful tool for probing thesingle-particle structure of rare isotopes[1]. The spectroscopic factors and orbital angular momenta of the removednucleons can be deduced by comparison of the experimental cross sections and longitudinal-momentum distributionsto those calculated in the Glauber reaction theory. Recently, study shows that for strongly bound valence nucleonknockout, the experimental cross sections are much smaller than reaction theory predictions[2].展开更多
The progress of research going on in Group of Rare Isotope Beam Physics (RIB), Experimental Physics ResearchCenter, in 2014 is in the following three aspects.1. Detector construction for the Dark Matter Particle Explo...The progress of research going on in Group of Rare Isotope Beam Physics (RIB), Experimental Physics ResearchCenter, in 2014 is in the following three aspects.1. Detector construction for the Dark Matter Particle Explorer (DAMPE) project. DAMPE is a large spacetelescope aimed at the evidence of dark matter existence through the measurements of their decay products. It isa part of the "Strategic Priority Research Program" of the Chinese Academy of Sciences for space science, and willbe launched in 2015. In this project, the RIB group is involved in the design and construction of the plastic scintillatorFig. 1 (color online) Accumulative adsorp-tion capacity of uranium from brine.detector array (PSD), which is a key component of theload with an active area of 0.8 m 0.8 m.展开更多
A new ΔE-E telescope has been constructed at the external target hall of CSRm[? ]. It is composed of 7 layers ofCsI(Tl) crystals. For each crystal, 4 photomultiplier tubes (PMTs) is coupled to the truncated corners f...A new ΔE-E telescope has been constructed at the external target hall of CSRm[? ]. It is composed of 7 layers ofCsI(Tl) crystals. For each crystal, 4 photomultiplier tubes (PMTs) is coupled to the truncated corners for collectingscintillation light. Each crystal has an active area of 50 mm 50 mm, and the thickness of the crystals are between5 and 10 mm. According to the requests of different experiments, the combination and the ordering of the layerscould be different. In order to achieve good uniformity of light collection, the dressing of each crystal was carefullychosen. The first three layers of the crystals are coated with ESR film, and the others are packed with 7 m Al-Foil.展开更多
文摘目的:探究早发型重度子痫前期(SPE)患者胎盘生长因子(PIGF)表达及与妊娠结局关系。方法:选取2017年1月-2018年12月本院收治的80例早发型SPE患者(观察组)及100例正常孕妇(对照组),检测两组分娩当日血浆PIGF水平并观察临床相关指标,依据PIGF水平分为PIGF异常组和正常组,分析早发型SPE孕妇PIGF水平及与妊娠结局关系。结果:观察组血浆PIGF水平低于对照组,SBP、DBP、S/D高于对照组(均P<0.05);早发型SPE孕妇中PIGF异常率为51.3%,PIGF异常组新生儿出生孕周、出生体重、胎盘重量、1 min Apgar评分均低于PIGF正常组,LAC、S/D高于PIGF正常组(P<0.05)。相关性分析发现,早发型SPE孕妇PIGF表达水平与SBP、DBP、脐动脉S/D呈负相关,与新生儿出生体重、1 min Apgar评分呈正相关(均P<0.05)。结论:早发型SPE孕妇PIGF表达水平与妊娠结局关系密切,PIGF对预测妊娠结局有一定临床价值,需加强关注。
文摘Large area plastic scintillation detectors are applied widely in modern physics labs due to the development of the time-of-flight technique. They are usually constructed with a module array design, such as the TOF Wall. The performance of such detectors is excellent, but the number of electronics channels is quite large, and the operation and calibration are too complicated. As a result, a large area plastic scintillation detector with only 4 readout signals from the corners is constructed and developed as a simple TOF Wall at ETF in IMP.
文摘The progress of research going on in Group of Rare Isotope Beam Physics (RIB), Experimental Physics Research Center, in 2015 is in the following two aspects. Construction of the plastic scintillator detector array (PSD) for the DArk Matter Particle Explorer (DAMPE) project.DAMPE is part of the “Strategic Priority Research Program” of the Chinese Academy of Science for space science, and it is a large space telescope aimed for the evidence of dark matter existence through the measurements of their decay products.
文摘Knockout reactions at intermediate and high energies have been proved to be a powerful tool for probing thesingle-particle structure of rare isotopes[1]. The spectroscopic factors and orbital angular momenta of the removednucleons can be deduced by comparison of the experimental cross sections and longitudinal-momentum distributionsto those calculated in the Glauber reaction theory. Recently, study shows that for strongly bound valence nucleonknockout, the experimental cross sections are much smaller than reaction theory predictions[2].
文摘The progress of research going on in Group of Rare Isotope Beam Physics (RIB), Experimental Physics ResearchCenter, in 2014 is in the following three aspects.1. Detector construction for the Dark Matter Particle Explorer (DAMPE) project. DAMPE is a large spacetelescope aimed at the evidence of dark matter existence through the measurements of their decay products. It isa part of the "Strategic Priority Research Program" of the Chinese Academy of Sciences for space science, and willbe launched in 2015. In this project, the RIB group is involved in the design and construction of the plastic scintillatorFig. 1 (color online) Accumulative adsorp-tion capacity of uranium from brine.detector array (PSD), which is a key component of theload with an active area of 0.8 m 0.8 m.
文摘A new ΔE-E telescope has been constructed at the external target hall of CSRm[? ]. It is composed of 7 layers ofCsI(Tl) crystals. For each crystal, 4 photomultiplier tubes (PMTs) is coupled to the truncated corners for collectingscintillation light. Each crystal has an active area of 50 mm 50 mm, and the thickness of the crystals are between5 and 10 mm. According to the requests of different experiments, the combination and the ordering of the layerscould be different. In order to achieve good uniformity of light collection, the dressing of each crystal was carefullychosen. The first three layers of the crystals are coated with ESR film, and the others are packed with 7 m Al-Foil.
