Accuracy of Capillary Blood for Assessing Vitamin A Nutritional Status Among Children Under 7 Years of Age: A Multicenter Study.

Vitamin A deficiency remains a major public health problem worldwide, particularly among young children. Capillary blood has the potential for application in vitamin A assessment. The aim of this study is to validate the accuracy of capillary blood for assessing vitamin A nutritional status among young children.

Surface mechanism and optimization of catalytic ozonation with CoFe oxides as catalyst for degradation of sodium p-toluenesulfonate in water.

In this study, the removals of sodium p-toluenesulfonate (NaTSA) by catalytic ozonation with two different cobalt-iron compounds, CoFe oxides prepared by co-precipitation/calcination (CPO) and CoFe oxides prepared by direct calcination (DCO), as the catalysts, had a difference of about 12%. It was found that the CPO surface contained active type c water, which was generally adsorbed on the oxygen vacancy. The test of oxygen temperature-programmed desorption (O-TPD) showed that the surface of CPO was rich in oxygen vacancy.

Characterization and Electrochemical Behaviour of Nanoscale Hydrotalcite-Like Compounds toward the Reduction of Nitrate.

In this research, nano Cu/Al-HTLCs, Co/Al-HTLCs and Cu/Co/Al-HTLCs were synthesized, characterized, and tested in electrolytic reduction nitrate. Experimental results showed that Cu/Al-HTLCs were less stable than Co/Al-HTLCs due to the Jahn-Teller effect. However, electrocatalytic activity of copper was superior to that of cobalt; thus, Cu/Co/Al-HTLCs were selected based on their stable crystalline structure and electrochemical activity.