Science and Technology Commissioners Supporting High-Quality Development Project for Hundreds of Counties, Thousands of Towns, and Myriads of Villages in the Context of Rural Revitalization

This paper discusses the important role of science and technology commissioners in the high-quality development of hundreds of counties,thousands of towns,and myriads of villages in the context of rural revitalization,including building bridges,accelerating the transformation of achievements,promoting the value-added of the whole agricultural industry chain,and promoting the rapid development of rural industrial economy.It also discusses the working achievements of science and technology commissioners,in order to promote further development of rural revitalization in Guangdong Province.

Experimental Investigation on Hydrophobic Behavior of Carbon Spheres Coated Surface Made from Microplastics

In this paper,a simple method to plate a hydrophobic coating on the inner surface of a small-scaled tube was proposed,where the coating consisted of carbon microspheres.Three common plastics polystyrene,polycarbonate and polyethylene were used as the feedstocks to be processed in supercritical water in a quartz tubular reactor.After reaction,the contact angle of droplet on the inner surface of the quartz tube was turned out to be over 100°,significantly larger than that of the blank tube 54°.When processing polystyrene in the 750℃ supercritical water for 10 min,the largest contact angle was obtained,up to 145°.Besides,in this sample,the size of carbon spheres was smallest,about 2.09μm diameter on average.When comparing among different types of plastics under the same condition,the contact angle of surface made from PC took the dominant position over that of PS and PE,124°,100°and 90°,respectively.In the sample made from PC,carbon spheres adhered into a mountainlike shape,producing a binary geometric structure.Furthermore,this research could be helpful in the discussion of plastic waste management and carbon spheres fabrication with low cost.

A New Triterpenoid from Lithocarpus litseifolius

Five compounds were isolated from the precipitation of Lithocarpus litseifolius.On the basis of spectral data,they were identified as huazhongilexin(1),lithocarpic acid O(2),(24S^(*),25R^(*))-cycloartane-3β,24,25,26-tetrol(3),lithocarpic acid D(4),2,3,23-trihydroxy olean-12-en-28-oic acid(5).Compounds 1,3,5 were isolated from this plant for the first time,compound 2 was new and shown to be weak cytotoxic when tested against A549,HeLa,HepG2,and MCF-7 cell lines.

Simplifying genetic classifiers by six mutated genes in diffuse large B-cell lymphoma

Although diffuse large B-cell lymphoma(DLBCL)is considered as a curable disease after standard immunochemotherapy,approximately30%of patients would succumb to short survival.To date,clinical presentations and gene expressions have been used to identify these high-risk patients.