CHLD

AcronymDefinition
CHLDCumulative Helium Leak Detection (medical and space electronics)
CHLDChronic Hypoxemic Lung Disease
CHLDCommunity Health Leadership Development (Hurricane, WV)
References in periodicals archive ?
Correlation analysis between CHLD and canopy spectral reflectance at various bands: The results of correlation analysis showed that CHLD of winter wheat in irrigated land was significant and had negative correlation with the spectral reflectance in visible waveband (460-730nm) and near-infrared waveband (1200 nm), but was significant and positive correlated with the spectral reflectance in near-infrared waveband (780-1100 nm) (Figure 3A).
The negative correlation between CHLD and spectral reflectance in 1460 nm waveband as well as the positive correlation between CHLD and spectral reflectance in 1260 nm waveband was not statistically significant.
Further, it can be observed from Figure 3 that correlation coefficient between CHLD and canopy spectral reflectance arrived the peak value at 670 nm waveband, with -0.
In addition, our results indicated that in dryland, TSAVI, PVI, NDVI, SAVI, DVI, OSAVI, and RDVI were significantly and had positive correlation with CHLD in near-infrared waveband (780-1260 nm) and visible waveband (460-730nm), but gave negative correlation with CHLD in near-infrared waveband (1460nm) and visible waveband (460-730nm).
However, in irrigated land, PVI was significantly and positive correlation with CHLD in near-infrared waveband (780-1460 nm) and visible waveband (460-730nm).
Establishment of spectrum model based on CHLD: Regression analysis was performed between eight spectrum vegetation index and CHLD of winter wheat in irrigated land and dryland.
Recent studies have demonstrated that spectrum parameter is associated with LAI and CHLD.
Identically, in this study, our results suggested that NDVI(780, 670) was more effective to predict the CHLD of winter wheat in irrigated land, when the determination coefficient (R2) was 0.