Should we Continue to Monitor or Choose to Ignore the Mild Increase in CA19-9 after Surgery.

Background: Different detection platforms can lead to significant differences in the results of CA19-9. Here, a case of a 38-year-old male colon cancer patient who underwent CA19-9 testing on two platforms after surgery.

Methods: We first inspect the instrument to confirm its normal operation and good indoor quality control.

Association between the methylations of in peripheral blood and lung cancer: a case-control study.

Background: is hypermethylated in multiple cancers. also functions as a regulator of tumors. However, there are only very few reports on the association of methylation of and with lung cancer (LC) in peripheral blood.

Moisture variation inferred from a nebkha profile correlates with vegetation changes in the southwestern Mu Us Desert of China over one century.

We inferred moisture variations from the early 1930s to the early 2010s in the southwestern Mu Us Desert of China using Rb/Sr ratio, chemical index of alteration (CIA), and organic matter (OM) content in a nebkha profile. Our results showed that the variations in moisture may have been the main factor that controlled vegetation recovery or degradation, and we believe that gradual vegetation recovery was notable throughout the study area during the past 80years, despite two notable degradation stages during the mid-1950s and the mid-1980s. The Rb/Sr ratio, CIA, and OM content revealed that moisture levels increased during the study period, though with large interannual variations.

Soil heavy metal contamination and risk assessment around the Fenhe Reservoir, China.

Heavy metal contamination in the soil around a water source is a particularly serious issue, because these heavy metals can be transferred into the water source and can pose significant human health risks through the contamination of drinking water or farmland irrigation water. In this paper, we collected surface soil samples from the area surrounding the Fenhe Reservoir. The concentrations of As, Cd, Cr, Cu, Hg, Ni, and Zn were determined and the potential ecological risks posed by the heavy metals were quantitatively evaluated.

[Concentrations of soil heavy metals and their spatial distribution in the surrounding area of Fenhe Reservoir].

Based on the concentrations of heavy metals from 95 topsoil samples, the spatial distribution characteristics and sources of the heavy metals in soil of the surrounding area of Fenhe Reservoir were analyzed with a method combining multivariate statistics and geo-statistics. The results showed that the average concentrations of the Cr, Cu, Ni, Pb, and Zn in soil of study area were 38.45, 19.