2D fast-ion velocity-space distributions have been reconstructed from two-view fast-ion D-alpha(FIDA)measurements on experimental advanced superconducting tokamak(EAST).To make up for the sparse data and incomplete ve...2D fast-ion velocity-space distributions have been reconstructed from two-view fast-ion D-alpha(FIDA)measurements on experimental advanced superconducting tokamak(EAST).To make up for the sparse data and incomplete velocity-space coverage with the dual-view,we use nonnegativity and null-measurements as prior information to reconstruct the velocity distribution in experiments with co-and counter-current neutral beam injection.An improved reconstructed fast-ion distribution is achieved by combining the existing O-and B-port FIDA measurements with the proposed A-port FIDA view.To further improve the reliability of FIDA-based reconstructions on EAST,based on real multi-view FIDA measurements on EAST in the near future,various bases will be studied further.展开更多
目的观察原发性肝癌(primary hepatocellular carcinoma,PHC)与血清25(OH)维生素D水平的相关性。方法抽取2018年8月—2020年8月莆田市第一医院PHC患者50例作为观察组,抽取同时期健康体检者50例作为对照组。检测两组血清25(OH)D3水平以...目的观察原发性肝癌(primary hepatocellular carcinoma,PHC)与血清25(OH)维生素D水平的相关性。方法抽取2018年8月—2020年8月莆田市第一医院PHC患者50例作为观察组,抽取同时期健康体检者50例作为对照组。检测两组血清25(OH)D3水平以及甲胎蛋白(alpha fetoprotein,AFP)水平。结果观察组血清25(OH)D3水平低于对照组,差异有统计学意义(P<0.05)。观察组AFP水平高于对照组,差异有统计学意义(P<0.05)。PHC血清患者25(OH)D3水平与中国肝癌分期(China live cancer staging,CNLC)、淋巴结转移有关,差异有统计学意义(P<0.05)。结论针对PHC患者,其血清25(OH)D3水平主要相关因素为CNLC分期、淋巴结转移,根据血清25(OH)D3水平可为疾病治疗及其预后评估提供依据。展开更多
肺癌是发病率和死亡率均较高的肿瘤之一,现有的预防和治疗方法均收效甚微。维生素D的生物学特性除了通过促进机体钙的吸收进而调节多种生理功能外,其在肿瘤的预防和治疗方面也有一定的作用。肺癌的发生、发展与维生素D或其代谢物25-一...肺癌是发病率和死亡率均较高的肿瘤之一,现有的预防和治疗方法均收效甚微。维生素D的生物学特性除了通过促进机体钙的吸收进而调节多种生理功能外,其在肿瘤的预防和治疗方面也有一定的作用。肺癌的发生、发展与维生素D或其代谢物25-一羟维生素D[25(OH)D]或1,25-二羟维生素D[1,25(OH)2D]有密切的关系。在这一代谢通路中,25-羟维生素D 1-α-羟化酶和25-羟基维生素D3-24-羟化酶的活性决定了1,25(OH)2D的含量,而维生素D受体(vitamin D receptor,VDR)的表达决定了1,25(OH)2D是否能有效发挥作用。本文就维生素D与肺癌的发生和预后之间的关系以及维生素D的代谢通路做一综述。展开更多
基金supported by National Natural Science Foundation of China(No.11975276)Anhui Provincial Natural Science Foundation(No.2008085J04)+3 种基金Anhui Provincial Key R&D Programmes(No.202104b11020003)the National Key Research and Development Program of China(No.2019YFE03020004)the Excellence Program of Hefei Science Center CAS(No.2021HSC-UE015)。
文摘2D fast-ion velocity-space distributions have been reconstructed from two-view fast-ion D-alpha(FIDA)measurements on experimental advanced superconducting tokamak(EAST).To make up for the sparse data and incomplete velocity-space coverage with the dual-view,we use nonnegativity and null-measurements as prior information to reconstruct the velocity distribution in experiments with co-and counter-current neutral beam injection.An improved reconstructed fast-ion distribution is achieved by combining the existing O-and B-port FIDA measurements with the proposed A-port FIDA view.To further improve the reliability of FIDA-based reconstructions on EAST,based on real multi-view FIDA measurements on EAST in the near future,various bases will be studied further.
文摘目的观察原发性肝癌(primary hepatocellular carcinoma,PHC)与血清25(OH)维生素D水平的相关性。方法抽取2018年8月—2020年8月莆田市第一医院PHC患者50例作为观察组,抽取同时期健康体检者50例作为对照组。检测两组血清25(OH)D3水平以及甲胎蛋白(alpha fetoprotein,AFP)水平。结果观察组血清25(OH)D3水平低于对照组,差异有统计学意义(P<0.05)。观察组AFP水平高于对照组,差异有统计学意义(P<0.05)。PHC血清患者25(OH)D3水平与中国肝癌分期(China live cancer staging,CNLC)、淋巴结转移有关,差异有统计学意义(P<0.05)。结论针对PHC患者,其血清25(OH)D3水平主要相关因素为CNLC分期、淋巴结转移,根据血清25(OH)D3水平可为疾病治疗及其预后评估提供依据。
文摘肺癌是发病率和死亡率均较高的肿瘤之一,现有的预防和治疗方法均收效甚微。维生素D的生物学特性除了通过促进机体钙的吸收进而调节多种生理功能外,其在肿瘤的预防和治疗方面也有一定的作用。肺癌的发生、发展与维生素D或其代谢物25-一羟维生素D[25(OH)D]或1,25-二羟维生素D[1,25(OH)2D]有密切的关系。在这一代谢通路中,25-羟维生素D 1-α-羟化酶和25-羟基维生素D3-24-羟化酶的活性决定了1,25(OH)2D的含量,而维生素D受体(vitamin D receptor,VDR)的表达决定了1,25(OH)2D是否能有效发挥作用。本文就维生素D与肺癌的发生和预后之间的关系以及维生素D的代谢通路做一综述。
