机构

• 地理科学与资源研究所 [1]
• 长春光学精密机械与物... [1]
• 水生生物研究所 [1]

采集方式

• OAI收割 [3]

内容类型

• 期刊论文 [2]
• 会议论文 [1]

发表日期

• 2023 [1]
• 2013 [1]
• 2006 [1]

学科主题

筛选

浏览/检索结果: 共3条，第1-3条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 More management is needed to improve the effectiveness of artificial grassland in vegetation and soil restoration on the three-river headwaters region of China 期刊论文  OAI收割 FRONTIERS IN PLANT SCIENCE, 2023, 卷号: 14, 页码: 10 作者:  Wang, Nengyu;  Wan, Jiayi;  Ding, Mingjun;  Zhang, Hua;  Li, Shicheng   |  收藏  |  浏览/下载：14/0  |  提交时间：2023/10/09 degraded alpine grassland  artificial grassland  plant-soil interaction  restoration management  partial least squares path models   ASSESSING IMPACTS OF A DAM CONSTRUCTION ON BENTHIC MACROINVERTEBRATE COMMUNITIES IN A MOUNTAIN STREAM 期刊论文  OAI收割 FRESENIUS ENVIRONMENTAL BULLETIN, 2013, 卷号: 22, 期号: 1, 页码: 103-110 作者:  Wang, Xingzhong;  Cai, Qinghua;  Jiang, Wanxiang;  Qu, Xiaodong 收藏  |  浏览/下载：41/0  |  提交时间：2014/01/03 flow regulation  benthic macroinvertebrates  partial least squares models  Xiangxi River   Fast determination of total ginsenosides content in Ginseng powder by near infrared reflectance spectroscopy (EI CONFERENCE) 会议论文  OAI收割 ICO20: Biomedical Optics, August 21, 2005 - August 26, 2005, Changchun, China 作者:  Chen X.-D.;  Chen X.-D. 收藏  |  浏览/下载：26/0  |  提交时间：2013/03/25 Near infrared (NIR) reflectance spectroscopy was used to develop a fast determination method for total ginsenosides in Ginseng (Panax Ginseng) powder. The spectra were analyzed with multiplicative signal correction (MSC) correlation method. The best correlative spectra region with the total ginsenosides content was 1660 nm1880 nm and 2230nm-2380 nm. The NIR calibration models of ginsenosides were built with multiple linear regression (MLR)  principle component regression (PCR) and partial least squares (PLS) regression respectively. The results showed that the calibration model built with PLS combined with MSC and the optimal spectrum region was the best one. The correlation coefficient and the root mean square error of correction validation (RMSEC) of the best calibration model were 0.98 and 0.15% respectively. The optimal spectrum region for calibration was 1204nm-2014nm. The result suggested that using NIR to rapidly determinate the total ginsenosides content in ginseng powder were feasible.