Renmin University of China

About: Renmin University of China is a education organization based out in Beijing, Beijing, China. It is known for research contribution in the topics: China & Population. The organization has 11325 authors who have published 15498 publications receiving 238419 citations. The organization is also known as: Renmin University & People's University of China.

Nearest-neighbour resonating valence bonds in YbMgGaO4.

Abstract: The signature of short range resonating valence bonds (RVB) to understand quantum spin liquids is yet to be explored. Here, Li et al . observe the putative RVB correlations restricted to nearest neighbours in YbMgGaO 4 , responsible for the high-energy spin…

Public perception and acceptability toward reclaimed water in Tianjin

Abstract: Tianjin is a large, rapidly growing urban center in northern China. This region has a semi-arid climate and limited water resources. Tianjin has a thriving economy and a growing population with a substantial and growing water need. Efficient use of limited water resources is critical to its continued growth. While the development of new water sources is ongoing, the reclamation of existing water can provide a substantial contribution to meeting the water needs of the region. A positive attitude by the public toward the use of reclaimed water is critical to the full development and utilization of this resource. The present study examines public knowledge, perceptions and attitudes toward water resources, with a focus on the use of reclaimed water as gaged by a survey. Survey results indicate that the general public is aware that water resources are limited, but is relatively unaware of where their water comes from, which sectors are the largest water consumers and what happens to the water after it has been used. Further, public awareness of the need to conserve water is relatively low. Reclaimed water is currently used by 54% of the population. The public is highly receptive to the use of reclaimed water, but not for domestic use and potable use. Analysis of the survey results indicates a correlation between people's social and economic background, and their attitudes toward the use of reclaimed water. People with a higher education and income level are more inclined to use reclaimed water and are more willing to pay for it. The study makes recommendations for improving the receptivity of the public toward the use of reclaimed water.

Why Is Cobalt the Best Transition Metal in Transition-Metal Hangman Corroles for O-O Bond Formation during Water Oxidation?

Abstract: O-O bond formation catalyzed by a variety of β-octafluoro hangman corrole metal complexes was investigated using density functional theory methods. Five transition metal elements, Co, Fe, Mn, Ru, and Ir, that are known to lead to water oxidation were examined. Our calculations clearly show that the formal Co(V) catalyst has a Co(IV)-corrole(•+) character and is the most efficient water oxidant among all eight transition-metal complexes. The O-O bond formation barriers were found to change in the following order: Co(V) ≪ Fe(V) < Mn(V) < Ir(V) < Co(IV) < Ru(V) < Ir(IV) < Mn(IV). The efficiency of water oxidation is discussed by analysis of the O-O bond formation step. Thus, the global trend is determined by the ability of the ligand d-block to accept two electrons from the nascent OH(-), as well as by the OH(•) affinity of the TM(IV)═O species of the corresponding TM(V)═O·H2O complex. Exchange-enhanced reactivity (EER) is responsible for the high catalytic activity of the Co(V) species in its S = 1 state.