IgA肾病（Ig A nephropathy,Ig AN）是全球最常见的慢性肾小球肾炎,30%~50%的患者在10~20年后,将进展为终末期肾脏病[1]。队列研究表明,蛋白尿、高血压就诊时肾功能是影响Ig AN患者预后的临床指标。肾素-血管紧张素-醛固酮系统（RAAS）...IgA肾病（Ig A nephropathy,Ig AN）是全球最常见的慢性肾小球肾炎,30%~50%的患者在10~20年后,将进展为终末期肾脏病[1]。队列研究表明,蛋白尿、高血压就诊时肾功能是影响Ig AN患者预后的临床指标。肾素-血管紧张素-醛固酮系统（RAAS）对于慢性肾脏病（CKD）的进展起着重要作用。阻断RASS被认为是治疗CKD基石。展开更多
We present the first results of a program to identify the unknown bright active galactic nuclei (AGN) in the ROSAT All Sky Survey Bright Source Catalog (RASSBSC). We have used lg C+04 R as an alternative expression fo...We present the first results of a program to identify the unknown bright active galactic nuclei (AGN) in the ROSAT All Sky Survey Bright Source Catalog (RASSBSC). We have used lg C+04 R as an alternative expression for lg (f x f opt ), where C is X-ray count rate and R stands for R magnitude. Then a high X-ray-to-optical flux ratio criterion has been used to select an AGN sample with 165 unidentified X-ray sources for optical spectroscopy. At present over 93% of the X-ray sources in the sample have been fully identified in the following classes: emission line AGNs, clusters of galaxies, BL Lacertae objects, and stars.展开更多
文摘IgA肾病（Ig A nephropathy,Ig AN）是全球最常见的慢性肾小球肾炎,30%~50%的患者在10~20年后,将进展为终末期肾脏病[1]。队列研究表明,蛋白尿、高血压就诊时肾功能是影响Ig AN患者预后的临床指标。肾素-血管紧张素-醛固酮系统（RAAS）对于慢性肾脏病（CKD）的进展起着重要作用。阻断RASS被认为是治疗CKD基石。
文摘We present the first results of a program to identify the unknown bright active galactic nuclei (AGN) in the ROSAT All Sky Survey Bright Source Catalog (RASSBSC). We have used lg C+04 R as an alternative expression for lg (f x f opt ), where C is X-ray count rate and R stands for R magnitude. Then a high X-ray-to-optical flux ratio criterion has been used to select an AGN sample with 165 unidentified X-ray sources for optical spectroscopy. At present over 93% of the X-ray sources in the sample have been fully identified in the following classes: emission line AGNs, clusters of galaxies, BL Lacertae objects, and stars.
