高血压患者运动血压与高敏C-反应蛋白和脉搏波传导速度的相关性分析

目的观察原发性高血压患者运动时血压水平与高敏C反应蛋白（hs- CRP）和踝臂脉搏波传导速度（BaPWV）的相关性。方法选择高血压病1、2级患者共80例,均行血脂、血糖、hs- CRP和BaPWV检测,然后所有受试者均接受运动平板试验,分别测量运动前、运动亚极量、运动后的血压情况,按照运动高血压的标准,将受试者分为运动高血压组（H组）和运动血压正常组（N组）,比较两组间收缩压（SBP）、舒张压（DBP）、脉压（PP）、hs- CRP和BaPWV等指标,以及运动血压水平与hs- CRP、BaPWV的相关性。结果 H组hs- CRP浓度和BaPWV值[（8.42±3.82）mg/L、（19.84±8.13）m/s]均高于N组[（6.64±4.12）mg/L、（15.71±9.24） m/s]（均P＜0.05）,并与运动亚极量时SBP、PP水平具有相关性（hs- CRP与SBP、PP,r=0.26、0.25,均P＜0.05;BaPWV与SBP、PP,r=0.29、0.36,P＜0.05或0.01）。结论运功高血压患者较运动血压正常者炎症反应和动脉硬化程度更明显,对运动高血压的早期发现和积极干预,可能在一定程度上能改善高血压患者的预后。     

Quantum state transfer via a hybrid solid–optomechanical interface

We propose a scheme to implement quantum state transfer between two distant quantum nodes via a hybrid solid–optomechanical interface. The quantum state is encoded on the native superconducting qubit, and transferred to the microwave photon, then the optical photon successively, which afterwards is transmitted to the remote node by cavity leaking,and finally the quantum state is transferred to the remote superconducting qubit. The high efficiency of the state transfer is achieved by controllable Gaussian pulses sequence and numerically demonstrated with theoretically feasible parameters.Our scheme has the potential to implement unified quantum computing–communication–computing, and high fidelity of the microwave–optics–microwave transfer process of the quantum state.     

弹性反冲探测分析技术在材料氦行为研究中的应用

弹性反冲探测分析技术（ERDA）对轻元素的测定具有灵敏度高、包含深度信息的优势，因此在材料氦行为研究中发挥着重要作用。镍基哈氏N合金被认为是未来熔盐堆的结构材料，氦脆是其服役性能下降的主要因素之一。利用掠入射模式的ERDA，解析了哈氏N合金样品中的氦原子浓度及其分布，但仅局限于0~175 nm深度范围内。结果表明:在800℃的退火条件下，距离样品辐照表面~33 nm深度区域内，出现了氦原子逃逸现象。更高温度的退火（1 050℃）可加剧氦原子的逃逸，但样品中仍有氦原子滞留。另外，采用透射式的ERDA，极大地扩大了对氦原子分析的深度范围，得到了纯镍薄膜在0~950 nm深度区域内的氦原子浓度分布。这表明将块体材料制备成薄膜样品，利用透射模式的ERDA，将可以得到氦原子在更大范围内的扩散、逃逸行为。Since the elastic recoil detection analysis (ERDA) technique has the advantages of high sensitivity and deep information in analyzing the light elements, it plays an important role in the study of helium behavior in materials. Helium embrittlement is one of the main reasons for the degradation of the Hastelloy N alloy, which has been considered as the promising candidate structural material for the further molten salt reactor. In this work, the profile of helium concentrationin sample of Hastelloy N alloy was analyzed by ERDA experiments applying grazing-incidence geometry. However, the result was limited within the depth range of 0~175 nm, and it shown that helium atoms escaped in the range from the irradiated surface of the sample to the depth of ~33 nm when annealing the sample at 800℃ The annealing at higher temperature (1 050℃) increased the escape of helium atoms, but a small fraction of helium atoms still trapped in the sample. In addition, the profile of helium concentration was obtained in the helium-irradiated pure nickel film in the depth range of 0~950 nm, using the ERDA experiments in transmission geometry. This indicates that the diffusion behavior of helium atoms in bulk samples can be completely obtained using the ERDA experiments in tranmission geometry if the bulk material can be prepared into a thin film sample.     

Helium bubble formation and evolution in NiMo-Y2O3 alloy under He ion irradiation

We report helium ion irradiation experiments for a new type of dispersion-strengthened NiMo-Y₂O₃ alloy with three different irradiation doses and varying irradiation dose rates at 750 ℃ to evaluate its helium-induced damage behavior. Transmission electron microscopy was used to reveal the evolution of helium bubbles after irradiation. The experimental results show that with increasing ion dose, the number density of helium bubbles increases continuously. However, the mean size of helium bubbles first increases and then decreases, mainly due to the varied ion dose rates. The volume fractions of helium bubbles in the three investigated samples after irradiation are 0.15%, 0.32%, and 0.27%, which are lower than that of the Hastelloy N alloy (0.58%) after similar irradiation conditions. This indicates that the NiMo-Y₂O₃ alloy exhibits better helium-induced-swelling resistance than the Hastelloy N alloy, highlighting its potential applicability to MSRs, from the perspective of irradiation performance.