Estimation of Cyanobacteria Blooms Monitoring Ability of HJ-1 CCD Data

Abstract

HJ-1 satellite system consists of two optical CCD sensors, which can support real-time data for environment monitoring because of its high temporal and spatial resolution, so that there is great potential in water quality monitoring for inland lake. In this article, we analyze the ability of cyanobacteria blooms monitoring using the HJ-1 CCD data. First, the HJ-1 satellite is introduced and the potential ability in cyanobacteria blooms monitoring is discussed. Second, the HJ-1 CCD data and MODIS data are preprocessed and analyzed. Finally, the relative accuracy between the results of HJ-1 CCD and MODIS data are analyzed. The results indicate that the HJ-1 CCD data improve the cyanobacteria blooms monitoring ability in same spatial and temporal resolution.

Photocatalytically Patterned TiO2Arrays for On-Plate Selective Enrichment of Phosphopeptides and Direct MALDI MS Analysis

“…These peptides either existed as relatively low abundance components in digests mixture or had poor ionization efficiency with multiphosphorylation, and thus difficult to detect without enrichment. PPTAenrichment selectively captures these phosphopeptides and improves the detection sensitivity after removal of nonphosphorylated species, providing comparable and even better enrichment efficiency in terms of selectivity and reliability compared to the existing MOAC or IMAC approaches 10,24,25,38 .…”

“…Immobilized metal ion affinity chromatography (IMAC), which utilizes the chelation interaction between metal ions (Fe 3+ , Ga 3+ , Ti 4+ , Zr 4+ et al) and phosphate groups, is another broadly used approach. [6][7][8][9][10] The selectivity of this method, however, is usually limited due to nonspecific binding of acidic non-phosphorylated peptides. 11 Other techniques such as strong cation/anion exchange chromatography (SCX/ SAX), [12][13][14]15 isoelectric focusing (IEF), 16 hydrophilic interaction chromatography (HILIC) 17 have been reported for preconcentration of phosphopeptides based on the difference in net charge, isoelectric point or polarity between phospho-and nonphosphopeptides.…”