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Metal oxide nanostructures with single-atomic heteroatom incorporation are of interest for many applications. However, a universal and scalable synthesis approach with high heteroatom concentrations represents a formidable challenge, primarily due to the pronounced structural disparities between Mhetero-O and Msub-O units. Here, focusing on TiO2 as the exemplified substrate, we present a diethylene glycol-assisted synthetic platform tailored for the controlled preparation of a library of M1-TiO2 nanostructures, encompassing 15 distinct unary M1-TiO2 nanostructures, along with two types of binary and ternary composites. Our approach capitalizes on the unique properties of diethylene glycol, affording precise kinetic control by passivating the hydrolytic activity of heteroatom and simultaneously achieving thermodynamic control by introducing short-range order structures to dissipate the free energy associated with heteroatom incorporation. The M1-TiO2 nanostructures, characterized by distinctive and abundant M-O-Ti units on the surface, exhibit high efficiency in photochromic photothermal catalysis toward recycling waste polyesters. This universal synthetic platform contributes to the preparation of materials with broad applicability and significance across catalysis, energy conversion, and biomedicine.

Background Overweight, obesity, and central obesity have become significant public health issues globally, affecting the well-being of residents. Analyzing the prevalence trends of overweight, obesity, and central obesity among residents in Shanxi Province can provide valuable scientific insights for the prevention and control of related diseases. Objective To analyze the prevalence and trends of overweight, obesity, and central obesity among adults aged 20 and above in Shanxi Province between 2010 and 2018. Methods The survey data of adults aged 20 and above in Shanxi Province were collected during four rounds of the China Chronic Disease Surveillance project from August 2010 to November 2018 (in 2010, 2013, 2015, and 2018) to calculate the rates of overweight, obesity, and central obesity among adults aged 20 and above in different years, and analyze the prevalence trends of overweight, obesity and central obesity for different characteristics of the study subjects. Results From 2010 to 2018, the overall crude rates and age- and gender-standardized rates of overweight among adults aged 20 and above in Shanxi Province ranged from 37.7% to 40.1% and 36.1% to 39.6%, respectively, with no significant upward trend (Z=0.005, 2.413; P=0.942, 0.120). The overall standardized obesity rate, overall crude rate of central obesity and the standardized rate central of obesity increased from 17.2%, 53.8%, and 52.4% in 2010 to 20.0%, 61.6%, and 60.2% in 2018, respectively (Z=8.100, 10.994, 12.218; P0.05) ; the standardized overweight rate for males was higher than that for females (χ2=4.259, P0.05) ; the overall obesity rate, male obesity rate, and both male and female central obesity rates in the age group of 20-39 years old showed an upward trend during the 8-year period (P0.05). There was also no significant difference in the trends of these rates between different genders and regions (P>0.05) . Conclusion From 2010 to 2018, the overweight rate among residents aged 20 and above in Shanxi Province remained stable, while the overall trends for obesity and central obesity rates showed an increasing trend. The prevention and control of obesity and central obesity should focus on the population aged 20-39 years to slow down the growth rate. For residents aged 40 and above, as well as urban residents, targeted prevention strategies should be implemented, so as to control the prevalence of overweight, obesity, and central obesity.

In order to compare the mechanical characteristics and supporting performance of the lengthened anchored pre-stressed bolt, the full-length anchored bolt and the full-length anchored pre-stressed bolt under the bed separation conditions, theoretical and numerical analysis models of the three typical bolts were established, respectively. The influences of preload, bed separation values, bed separation numbers and bed separation positions on the mechanical properties of the three typical bolts were studied by numerical simulation method, and the mechanical properties of the three typical bolts were compared and analysed, and the sensitivity analysis of the crack opening of the three typical bolts was carried out. Results indicate that the initial preload can exert obvious restraint on the surrounding rock, in which the preload transmission range of the full-length anchored pre-stressed bolt is larger, and the restraint effect on the surrounding rock is better. Under the different bed separation conditions, the stress characteristics of the three typical bolt bodies at the bed separation basically follow the same law except for the free section of the lengthened anchored pre-stressed bolt. Under the action of the bed separation, the initial bonding section of the full-length anchored pre-stressed bolt and the free section of the lengthened anchored bolt have a certain influence on the distribution of the axial force and shear stress at the anchorage interface. The sensitivity of the two kinds of full-length anchored bolts is higher than that of the lengthened anchored pre-stressed bolt under the left bed separation condition. There is little difference in sensitivity between three typical bolts under the middle and right bed separation conditions. The research results can provide theoretical guidance for the selection of bolts in roadway support. [ABSTRACT FROM AUTHOR]

Abstract: Recently, Pt-based bimetallic nanoparticles have drawn much attention because of their great catalytic performance and wide applications in diverse fields. In this work, we report that bimetallic Pt--In nanoparticles [...]