J Laparoendosc Adv Surg Tech A
May 2020
This study aimed to investigate the application of nanocarbon in surgical endoscopy in patients with thyroid cancer for the clinical tracing of level VI sentinel lymph nodes (SLNs) and for parathyroid gland protection. Ninety-three patients with papillary thyroid carcinoma (PTC) who underwent an endoscopic thyroid cancer operation were included. We randomly divided these patients into a control group ( = 42) and a nanocarbon group ( = 51).
View Article and Find Full Text PDFAlthough the total emission of sulphure dioxide (SO2) was reduced by more than 10% in the Eleventh Five-Year-Plan (2006-2010) in China, the total emission of nitrogen oxides (NOx) in the same period kept increasing. In order to evaluate the effects of the emission changes on acid depostion, a ten-year monitoring on forest throughfall was carried out from 2001 to 2010 at Tieshanping, Chongqing in Southwestern China. The results indicated there was a significantly decreasing trend of sulphur deposition and an increasing trend of nitrogen deposition, which coincided well with the dicreasing trend of SO2 emission and increasing tread of NOx emission in Chongqing, respectively.
View Article and Find Full Text PDFHuan Jing Ke Xue
February 2008
The potential effects of acidification and liming on the dynamics of carbon pool in forest soil were studied through field experiments at Tieshanping, Chongqing in Southwest China. The changes of dissolved organic matter (DOM) concentration in soil water in different layers within three years after application of limestone or magnesite indicated that soil remediation had leaded to significant decrease of DOM in soil water from mineral layers [e.g.
View Article and Find Full Text PDFThe impacts of nitrogen deposition on a typical acidified soil under a masson pine (Pinus massoniana) forest at Tieshanping, Chongqing in Southwest China was studied through field experiments. The changes of soil water chemistry in different layers within one year after the spray of NH4NO3 and NaNO3 solution respectively [with the same nitrogen dose of 40 kg x (hm2 x a)(-1)] indicated that although the pH value decreased a little (treated by NH4NO3) or even increased somewhat (treated by NaNO3), the concentration of base cations, i.e.
View Article and Find Full Text PDFEffect of limestone and magnesite application on remediation of a typical acidified soil under a masson pine (Pinus massoniana) forest at Tieshanping, Chongqing in southwest China was studied through field experiments. The changes of soil water chemistry in different layers within one year after application of limestone or magnesite indicated that the remediation agents leaded to the recovery of acidified soil by significant increase of pH value and concentration of relative cation, i.e.
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