In order to promote the heavy metal ions removal of porous gel adsorbent and protect the adsorbent from other pollutants in wastewater, the tetrapod ZnO whiskers (tZnO) modified by amino-chain brush was introduced into the polyvinyl alcohol (PVA) matrix to prepare the PVA/NH@TAtZnO composites with brush structure for toxic Pb(II) removal. The adsorption property, adsorption process and adsorption mechanism were studied by adsorption isotherms, adsorption kinetics, adsorption thermodynamics, SEM-EDS analysis and XPS analysis. And the anti-interference ability and anti-interference mechanism were researched by SEM-EDS analysis and XPS analysis.
View Article and Find Full Text PDFA Brønsted acid catalyzed method for the construction of guaiazulenyl C3-functionalized indole derivatives is reported for the first time. The reactions proceeded smoothly at ambient temperature by using (±)-10-camphorsulfonic acid (CSA) as a catalyst, 2-indolylmethanols and guaiazulene as substrates, and the desired products were obtained in high yields with excellent regioselectivities.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
December 2020
Camphor leaf (CL) was widely used to extract camphor oil and thus led to abundant forestry waste. In order to reduce pollution, the waste CL was used to prepare bio-adsorbent for Pb(II) removal after alkali treatment and functional modification. The effects of solution pH, initial Pb(II) concentration, contact time and solution temperature were investigated on adsorption process to evaluate the potential application in heavy metal ions' removal.
View Article and Find Full Text PDFAberrant T helper-2 (Th2) responses play a critical role in the pathogenesis of allergic diseases. The underlying mechanism is to be further investigated. It is reported that soluble CD83 (sCD83) has immune-regulatory effects.
View Article and Find Full Text PDFPolyvinyl alcohol (PVA) filled with different kinds of ZnO whisker was prepared by chemical cross-linking reaction. It was found that the ZnO whiskers dispersed uniformly after being modified by 3-aminopropyltriethoxysilane (APTES). The PVA/tetrapod-shaped ZnO (PVA/tetra-ZnO) composites showed better adsorption performance than other kinds of PVA/ZnO composites.
View Article and Find Full Text PDFZhonghua Wai Ke Za Zhi
May 2010
Objective: To discuss the effectiveness of individualized strategy of surgical management on the great arteries (TGA).
Methods: From March 1998 to October 2009, 127 cases (97 males and 30 females) with TGA were treated. There were 97 male and 30 female, aged from 4 hours old to 17 years old with a mean of (25 ± 37) months, weighted from 2.
Zhongguo Yi Liao Qi Xie Za Zhi
January 2002
A flow controlling system for pulsed inhaled nitric oxide has been developed and tested, and here its features and initial animal experiments and clinical applications are described. The physical characteristic test indicates that the practical released dose of NO gas is very close to the theoretical flow of NO gas at variant pressures. Animal experiments demonstrate that inhaled NO gas concentration is lower than the concentration of theoretical inhalation, but the variance is not remarkable (p>0.
View Article and Find Full Text PDFZhonghua Yi Xue Za Zhi
January 2003
Objective: To summarize the experience of surgical treatment of newborns with congenital heart diseases.
Methods: The experience of surgical treatment of 8 newborns with critical congenital heart diseases, including 3 cases of D-transposition of great arteries with intact ventricular septum, 2 cases of ventricular septal defect with artrial defect (ASD), one case of complete atrioventricular canal defect, 1 case of obstructed supracardiac total anomalous pulmonary venous drainage with ASD, and 1 case of patent ductus arteriosus (PDA).
Results: The case of PDA underwent ligation under normothermic anesthesia and the other 7 cases were operated upon under moderate or deep hypothermic cardiopulmonary bypass.