This paper presents a comprehensive investigation into the thermal stability of superlattice-like (SLL) thin films fabricated by varying the sputtering sequences of the SLL [GeSb(25nm)/GeTe(25nm)] and SLL [GeTe(25nm)/GeSb(25nm)] configurations. Our results reveal significantly enhanced ten-year data retention () for both thin films measured at 124.3 °C and 151.
View Article and Find Full Text PDFBackground: Passiflora edulis is a tropical fruit with high nutrient and medicinal values that is widely planted in southern China. However, the molecular biology of P. edulis has not been well studied.
View Article and Find Full Text PDFA concise and stereoselective total synthesis of (±)-cephanolide B was achieved in 15 steps. The key steps in the synthesis were as follows: (i) an intermolecular Diels-Alder reaction followed by lactonization to form the oxabicyclo[2.2.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
July 2020
Photoredox-catalyzed isomerization of γ-carbonyl-substituted allylic alcohols to their corresponding carbonyl compounds was achieved for the first time by C-H bond activation. This catalytic redox-neutral process resulted in the synthesis of 1,4-dicarbonyl compounds. Notably, allylic alcohols bearing tetrasubstituted olefins can also be transformed into their corresponding carbonyl compounds.
View Article and Find Full Text PDFBackground: Passiflora edulis, known as passion fruit and native to South America, is now widely cultivated throughout southern China for its edible value, medicinal efficacy and ornamental properties. We have developed a cold-tolerant variety of P. edulis ('Pingtang 1') that can survive subzero temperatures and is highly adaptable in Karst areas.
View Article and Find Full Text PDFThe molecular weight of dissolved organic matter (DOM) is one of the essential factors controlling the properties of metal complexes. A continuous ultrafiltration experiment was designed to study the properties of Cu complexes with different molecular weights in a river before and after eutrophication. The results showed that the concentration of DOM increased from 26.
View Article and Find Full Text PDFPersistent organic pollutants (POPs) are the urgent risk for landfill, and should be considered before the landfill reclamation and resource. In this work, the distribution pattern of selected POPs in landfill and their ecological risks were investigated and assessed. The Σ20OCPs, Σ16PAHs and Σ19PCBs were around 157.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
July 2015
The ability of a new SBR (sequencing batch reactor) based on simulating photovoltaic aeration for maintaining nitrification activity under a 25-day starvation period was studied. The activity and abundance of ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB) and the diversity of AOB were investigated. The measured biomass decay rates were 0.
View Article and Find Full Text PDFIt is the first time for this research to utilize the method of health risk assessment. Combining with Beijing reclaimed water project, the exposure dose level and health risk to contact people are investigated and studied. The risk assessment model is built, and the exposure parameters of occupational workers and common people are provided, when reclaimed water was used for streets watering.
View Article and Find Full Text PDFThe exposure assessment method and model of various reclaimed water uses are built combining with Beijing reclaimed water project. Firstly the daily ingesting dose and lifetime average daily dose (LADD) of exposure people are provided via field work and monitoring analysis, which could be used in health risk assessment as quantitative reference. Take park irrigation as a example, for occupational workers, the total daily ingesting dose is 0.
View Article and Find Full Text PDFHuan Jing Ke Xue
July 2006
Using the technique of microbial risk assessment, concentration limitations of pathogenic microorganisms for various reclaimed water uses are studied. The concentration limitations are: Escherichia coli 70 MPN/L, Salmonella 0.5 CFU/L, Shigella 0.
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