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In this paper, the effects of night natural ventilation on indoor thermal environment of ultra-low energy consumption in a university in Shenyang were evaluated. The DeST software was used to establish the ultra-low energy consumption building model and the conventional building model, and the accuracy of the model is also verified experimentally. The indoor temperature, building power consumption of air conditioning system of the two models were calculated under the natural ventilation condition at night. The results show that under the optimal night natural ventilation conditions in July and August, the energy saving rate of ultra-low energy building refrigeration system is 15% and 46% respectively. The energy saving rate of conventional building refrigeration system is 14% and 44% respectively. The peak indoor temperature of the two types of buildings decreases with the increase of natural ventilation time at night. Both ultra-low energy consumption buildings and conventional energy consumption buildings adopt natural ventilation at night to help reduce indoor temperature, building power consumption of cooling system.

This paper, by adopting the reverse mixing compensation technique of the admixtures, deals with the rules of how the secondary compensation mechanism of admixtures affects the recovery of concrete workability under conditions with different strength grades and different mix ratio designs, reveals the mechanism of how to adjust and control the concrete workability, and sets up the workability compensation law equation of C30-C60 concrete mixture based on average fit curve.

Groundwater is a significant and crucial component for all development activities of any life support system. In this study, the hydrochemical analysis and water quality index method (WQI) were used to assess groundwater quality for drinking purposes. Twelve groundwater samples were collected and analyzed into fourteen parameters which were considered as important indicators for assessing groundwater quality. A comparative study of these parameters with that of the Chinese Groundwater Standard (GB/T14848-2017) was conducted. It can be depicted from the results that groundwater quality is categorized as very hard, fresh water and slightly alkaline in nature. The major sequence of dominant cations and anions in groundwater are Ca2+ > Mg2+ > Na+ > K+ and HCO-3 > SO2-4 > Cl- respectively. From the total 12 samples analyzed, the parameters of TH, NH+4, Fe and Mn of samples exceeded the limits set by (GB/T14848-2017) standard. Piper diagram illustrated that groundwater samples of the studied area are mostly of Ca-Mg-HCO3-SO4 type. WQI showed all samples fall between excellent to good category of water and suitable for drinking purposes. The quality of groundwater is mainly affected from anthropogenic activities and natural influence. The proposed method is reliable and effcient for groundwater pollution assessment and can be used in decision-making.

The pace transformation and innovative design of Yungang art heritage should keep pace with times on the setting of “digital humanity” times, make the most of new research approaches which is given by “digital humanity” and explore a new way of pace transformation of art heritage actively. The research object of this topic is lineage master in space and form and the transformation of promotion and Creativity of Yungang Grotto art heritage. The goal is taking advantage of big data basics and the information sample collection and integration in the context of the full media era. Transferring Yungang Grotto art materially and creatively by making use of the world's advanced "art + science and technology" means, building a new type of modern sapiential museum and explore the construction mode of it and the upgraded version of modern educational functions.