目的探讨T淋巴细胞亚群变化在脑卒中相关性肺炎预测中的价值及准确性。方法采用流式细胞术对80例病例(疾病:脑卒中,时间:2022年12月至2023年11月)进行检测,根据其住院后1周是否发生相关肺炎分为肺炎组、非肺炎组,采集患者外周静脉血进行...目的探讨T淋巴细胞亚群变化在脑卒中相关性肺炎预测中的价值及准确性。方法采用流式细胞术对80例病例(疾病:脑卒中,时间:2022年12月至2023年11月)进行检测,根据其住院后1周是否发生相关肺炎分为肺炎组、非肺炎组,采集患者外周静脉血进行T淋巴细胞亚群变化检测,对比不同人群者T淋巴细胞亚群变化及T淋巴细胞亚群在脑卒中相关性肺炎预测中的价值。结果按照美国国立卫生研究院卒中量表(National Institute of Health stroke scale,NIHSS)评分对80例脑卒中患者分级,轻症组NIHSS评分<10分(n=45)、重症组NIHSS评分≥10分(n=35)。轻症组CD3^(+)、CD4^(+)、CD4^(+)/CD8^(+)高于重症组,CD8^(+)低于重症组(P<0.05);住院后1周通过检测发现22例出现相关性肺炎,经对比发现肺炎组CD3^(+)、CD4^(+)、CD4^(+)/CD8^(+)低于非肺炎组,CD8^(+)高于非肺炎组(P<0.05);以实验室检查结果为金标准,CD3^(+)、CD4^(+)、CD8^(+)、CD4^(+)/CD8^(+)单一诊断脑卒中相关性肺炎准确率低于T淋巴细胞亚群联合诊断准确率(P<0.05);经Pearson相关性分析发现CD3^(+)、CD4^(+)、CD4^(+)/CD8^(+)与NIHSS评分呈负相关,CD8^(+)与NIHSS评分呈正相关。结论在脑卒中相关性肺炎预测中应用T淋巴细胞变化不仅可评估患者神经损伤程度,亦可对其是否发生相关性肺炎进行预测,为临床医师及早干预提供参考,值得借鉴与学习。展开更多
Both M_(W) 7.8 and M_(W) 7.5 earthquakes occurred in southeastern Türkiye on February 6,2023,resulting in numerous buildings collapsing and serious casualties.Understanding the distribution of coseismic surface r...Both M_(W) 7.8 and M_(W) 7.5 earthquakes occurred in southeastern Türkiye on February 6,2023,resulting in numerous buildings collapsing and serious casualties.Understanding the distribution of coseismic surface ruptures and secondary disasters surrounding the epicentral area is important for post-earthquake emergency and disaster assessments.High-resolution Maxar and GF-2 satellite data were used after the events to extract the location of the rupture surrounding the first epicentral area.The results show that the length of the interpreted surface rupture zone(part of)is approximately 75 km,with a coseismic sinistral dislocation of 2-3 m near the epicenter;however,this reduced to zero at the tip of the southwest section of the East Anatolia Fault Zone.Moreover,dense soil liquefaction pits were triggered along the rupture trace.These events are in the western region of the Eurasian Seismic Belt and result from the subduction and collision of the Arabian and African Plates toward the Eurasian Plate.The western region of the Chinese mainland and its adjacent areas are in the eastern section of the Eurasian Seismic Belt,where seismic activity is controlled by the collision of the Indian and Eurasian Plates.Both China and Türkiye have independent tectonic histories.展开更多
A new protoberberine alkaloid, named 5,6-dihydro- 10-hydroxy-2,3,9-trimethoxy- 13-methyldibenzo[α,g]quinoliziniurn （1） was isolated from the 60% ethanol extract of the tubers of Corydalis yanhusuo W. T. Wang, toget...A new protoberberine alkaloid, named 5,6-dihydro- 10-hydroxy-2,3,9-trimethoxy- 13-methyldibenzo[α,g]quinoliziniurn （1） was isolated from the 60% ethanol extract of the tubers of Corydalis yanhusuo W. T. Wang, together with a new natural product, 13methylpalmatrubine （2）. Their structures were established by spectroscopic methods. 2009 Xin Sheng Yao. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All fights reserved.展开更多
Digital Elevation Models (DEMs) depict the configuration of the earth surface and are being applied in many areas in earth and environmental sciences. In this study, the accuracy of the Advanced Land Observing Satelli...Digital Elevation Models (DEMs) depict the configuration of the earth surface and are being applied in many areas in earth and environmental sciences. In this study, the accuracy of the Advanced Land Observing Satellite World 3D Digital Surface Model version 2.1 (ALOS W3D30), the Shuttle Radar Topography Mission Digital Elevation Model version 3.0 (SRTM30) and the Advanced Space borne Thermal Emission and Reflection Radiometer Global DEM version 2.0 (ASTER GDEM2) was statistically assessed using high accuracy GPS survey data. Root-Mean-Square errors of ~5.40 m, ~7.47 m and ~20.03 m were obtained for ALOS W3D30, SRTM30 and ASTER GDEM2 respectively. In further analyses, we discovered that ALOS W3D30 and SRTM30 were much more accurate in regions where the height intervals were within 201 m - 400 m and >801 m. ALOS W3D30 proved to be the most accurate DEM that best represents the topography of the earth’s surface and could be used for some earth and environmental applications in Nigeria. We recommend that this study should serve as a guide in the use of any of these DEMs for earth and environmental applications in Nigeria.展开更多
The measurement principle and analysis method of natural gamma-ray spectra using Nal(T1) scintillation spectrometer are briefly described first, thed block diagrams of the HD-8004 Nal(T1) gamma-ray spectrometer. Fina...The measurement principle and analysis method of natural gamma-ray spectra using Nal(T1) scintillation spectrometer are briefly described first, thed block diagrams of the HD-8004 Nal(T1) gamma-ray spectrometer. Finally, sample measurements are listed and discussed. The results are quite promising. Based on the analysis of these measurements, measures to improve the accuracy of spectrum measurement are proposed. It is well hoped that these measures call contribute to the development and application of gamma-ray spectrum measurement.展开更多
If Vladimir Put in returns as planned to the presidency in 2012,he will once again face the challenge of modernizing the Russian economy. This is something both he and his seat-warmer, Dmitri Medvedev,have failed to a...If Vladimir Put in returns as planned to the presidency in 2012,he will once again face the challenge of modernizing the Russian economy. This is something both he and his seat-warmer, Dmitri Medvedev,have failed to achieve during three consecutive presidential terms. A展开更多
Russia on November 10 cleared the last major obstacle in its 18-year effort to join the World Trade Organization in what the head of the institution called a milestone for global trade. "It’s a victory for Russi...Russia on November 10 cleared the last major obstacle in its 18-year effort to join the World Trade Organization in what the head of the institution called a milestone for global trade. "It’s a victory for Russia, a victory for W.T.O. members, and a victory展开更多
文摘目的探讨T淋巴细胞亚群变化在脑卒中相关性肺炎预测中的价值及准确性。方法采用流式细胞术对80例病例(疾病:脑卒中,时间:2022年12月至2023年11月)进行检测,根据其住院后1周是否发生相关肺炎分为肺炎组、非肺炎组,采集患者外周静脉血进行T淋巴细胞亚群变化检测,对比不同人群者T淋巴细胞亚群变化及T淋巴细胞亚群在脑卒中相关性肺炎预测中的价值。结果按照美国国立卫生研究院卒中量表(National Institute of Health stroke scale,NIHSS)评分对80例脑卒中患者分级,轻症组NIHSS评分<10分(n=45)、重症组NIHSS评分≥10分(n=35)。轻症组CD3^(+)、CD4^(+)、CD4^(+)/CD8^(+)高于重症组,CD8^(+)低于重症组(P<0.05);住院后1周通过检测发现22例出现相关性肺炎,经对比发现肺炎组CD3^(+)、CD4^(+)、CD4^(+)/CD8^(+)低于非肺炎组,CD8^(+)高于非肺炎组(P<0.05);以实验室检查结果为金标准,CD3^(+)、CD4^(+)、CD8^(+)、CD4^(+)/CD8^(+)单一诊断脑卒中相关性肺炎准确率低于T淋巴细胞亚群联合诊断准确率(P<0.05);经Pearson相关性分析发现CD3^(+)、CD4^(+)、CD4^(+)/CD8^(+)与NIHSS评分呈负相关,CD8^(+)与NIHSS评分呈正相关。结论在脑卒中相关性肺炎预测中应用T淋巴细胞变化不仅可评估患者神经损伤程度,亦可对其是否发生相关性肺炎进行预测,为临床医师及早干预提供参考,值得借鉴与学习。
基金funded by the Basic Research Program of the Institute of Earthquake Forecasting,China Earthquake Administration(Grant Nos.CEAIEF20220102,2021IEF0505,and CEAIEF2022050502)the National Natural Science Foundation of China(Grant Nos.42072248 and 42041006)the National Key Research and Development Program of China(Grant Nos.2021YFC3000601-3 and 2019YFE0108900)。
文摘Both M_(W) 7.8 and M_(W) 7.5 earthquakes occurred in southeastern Türkiye on February 6,2023,resulting in numerous buildings collapsing and serious casualties.Understanding the distribution of coseismic surface ruptures and secondary disasters surrounding the epicentral area is important for post-earthquake emergency and disaster assessments.High-resolution Maxar and GF-2 satellite data were used after the events to extract the location of the rupture surrounding the first epicentral area.The results show that the length of the interpreted surface rupture zone(part of)is approximately 75 km,with a coseismic sinistral dislocation of 2-3 m near the epicenter;however,this reduced to zero at the tip of the southwest section of the East Anatolia Fault Zone.Moreover,dense soil liquefaction pits were triggered along the rupture trace.These events are in the western region of the Eurasian Seismic Belt and result from the subduction and collision of the Arabian and African Plates toward the Eurasian Plate.The western region of the Chinese mainland and its adjacent areas are in the eastern section of the Eurasian Seismic Belt,where seismic activity is controlled by the collision of the Indian and Eurasian Plates.Both China and Türkiye have independent tectonic histories.
文摘A new protoberberine alkaloid, named 5,6-dihydro- 10-hydroxy-2,3,9-trimethoxy- 13-methyldibenzo[α,g]quinoliziniurn （1） was isolated from the 60% ethanol extract of the tubers of Corydalis yanhusuo W. T. Wang, together with a new natural product, 13methylpalmatrubine （2）. Their structures were established by spectroscopic methods. 2009 Xin Sheng Yao. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All fights reserved.
文摘Digital Elevation Models (DEMs) depict the configuration of the earth surface and are being applied in many areas in earth and environmental sciences. In this study, the accuracy of the Advanced Land Observing Satellite World 3D Digital Surface Model version 2.1 (ALOS W3D30), the Shuttle Radar Topography Mission Digital Elevation Model version 3.0 (SRTM30) and the Advanced Space borne Thermal Emission and Reflection Radiometer Global DEM version 2.0 (ASTER GDEM2) was statistically assessed using high accuracy GPS survey data. Root-Mean-Square errors of ~5.40 m, ~7.47 m and ~20.03 m were obtained for ALOS W3D30, SRTM30 and ASTER GDEM2 respectively. In further analyses, we discovered that ALOS W3D30 and SRTM30 were much more accurate in regions where the height intervals were within 201 m - 400 m and >801 m. ALOS W3D30 proved to be the most accurate DEM that best represents the topography of the earth’s surface and could be used for some earth and environmental applications in Nigeria. We recommend that this study should serve as a guide in the use of any of these DEMs for earth and environmental applications in Nigeria.
文摘The measurement principle and analysis method of natural gamma-ray spectra using Nal(T1) scintillation spectrometer are briefly described first, thed block diagrams of the HD-8004 Nal(T1) gamma-ray spectrometer. Finally, sample measurements are listed and discussed. The results are quite promising. Based on the analysis of these measurements, measures to improve the accuracy of spectrum measurement are proposed. It is well hoped that these measures call contribute to the development and application of gamma-ray spectrum measurement.
文摘If Vladimir Put in returns as planned to the presidency in 2012,he will once again face the challenge of modernizing the Russian economy. This is something both he and his seat-warmer, Dmitri Medvedev,have failed to achieve during three consecutive presidential terms. A
文摘Russia on November 10 cleared the last major obstacle in its 18-year effort to join the World Trade Organization in what the head of the institution called a milestone for global trade. "It’s a victory for Russia, a victory for W.T.O. members, and a victory
