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In the present work, we studied the effects of different oligosaccharides on Lactobacillus plantarum ATCC14917, focusing on growth and adhesion characteristics and fermented milk flavor. The results showed that mannan-oligosaccharide (MOS) had the greatest proliferative effect on L. plantarum ATCC14917 in vitro. In terms of adhesive properties, the autoaggregation rate of L. plantarum cultured in MOS was 23.76%, adhesion to mucin was 24.65%, and adhesion to Caco-2 cells was 14.71%. These results for L. plantarum cultured with MOS were higher than those for L. plantarum cultured in fructo-oligosaccharides (FOS) or galacto-oligosaccharides (GOS). Furthermore, the surface consistency and viscosity scores of fermented milk of the MOS group was higher than that of milks cultured with FOS or GOS, although MOS had the lowest scores for fermented milk flavor. [ABSTRACT FROM AUTHOR]

During the period of COVID-19, the number of residents infected in urban communities continued to rise, implying that most of the current building layouts can't effectively resist the spread of infectious diseases, and the outbreak of COVID-19 has led to the need of changes for the current building environment. Therefore, the epidemic prevention should be considered in the residential building design, and the health design of residential community should be carried out from the perspective of epidemic prevention. In order to improve the ability of epidemic prevention of residential buildings and deal with the sudden pandemic and influenza in the post-epidemic era, a Healthy Assessment System for Residential Building Epidemic Prevention (HASRBEP) was developed according to the epidemic impact on residential buildings, the design and measures of epidemic prevention for residential buildings and the Chinese Assessment standard for healthy building (T/ASC 02–2016). Both entropy weight method and expert scoring method were used to determine the specific weight of the index. The HASRBEP includes control item assessment, preliminary assessment and extension assessment. The newly developed HASRBEP was used to assess the residential buildings of the Yulongzhuang Building Community located in Quanzhou, Fujian Province, China. The results show that the HASRBEP can be used to guide the health and epidemic prevention design of residential buildings. • The assessment index system of healthy building is reconstructed and the assessment contents of healthy building are enriched. • The index weight system of healthy assessment of residential building is reestablished. • A multi-level extension health assessment model is newly constructed. • The HASRBEP can be used to guide the health and epidemic prevention design of residential buildings. [ABSTRACT FROM AUTHOR]

This study investigates the stabilization effect of a new soil stabilizer based on mineral powder, lime powder, dihydrate gypsum, and sodium hydroxide on the residue of construction waste (RCW). The performance of the residue solidified soil (RSS) with different ratios of stabilizer was analyzed both macroscopically and microscopically, in air and water environments.The experiment indicates that the optimal composition of the new stabilizer for specimen a7 consists of 85 % mineral powder, 3 % sodium hydroxide, and 12 % dihydrate gypsum. The water stability coefficients of specimens a3-a10 are all greater than 80 %.The performance of RSS meets the requirements of the Technical standard for application of soil stabilizer (CJJ/T286- 2018) and the technical specificatiopn for application of road solidified soil (T/CECS 737–2020). Therefore, the RSS designed and prepared in this study is a material with sufficient strength that can be used for urban road subbase layers. From a microscopic perspective, the generation of a large amount of ettringite crystals and C-S-H gel is the main reason for the increase in compressive strength of stabilized soil as it ages.The cost benefit analysis of the RSS that meets the strength requirements is carried out. The performance and cost of the RSS is also compared with the ones solidified by Portland cement and sulphoaluminate cement. From the economic point of view, most of the raw materials of the new soil stabilizer are cheap and easy to obtain, and the cost of the new soil stabilizer is much lower than that of Portland cement and sulphoaluminate cement, therefore the RSS should have strong market competitiveness. • We prepare a new soil stabilizer to solidify the residue of construction waste. • We compare performances with the ones solidified by other cement. • The residue solidification soil has good macro-mechanical and water stability. • The residue solidification soil can be used to urban road subbase. [ABSTRACT FROM AUTHOR]