Concrete mortar segregation during vertical pipeline gravity transportation will form a weak part in the shaft lining, which poses a challenge for deep mine shaft safety.The specific gravity difference between aggregate and slurry will cause relative motion; the relative velocity is detrimental to the mortar workability, which plays a significant r
During two controlled enclosure experiments using water from a subtropical lake, the plankton Krill Oil food web displayed a highly variable response to combined addition of nitrogen and phosphorus.In July, the nutrients stimulated growth of Cylindrospermopsis raciborskii, and the biomass of macrozooplankton and microbial food web components did no
Surface TV application of photocatalyst in cement-based materials could endow it with photocatalytic properties, however, the weak adhesion between photocatalyst coatings and the substrates may result in poor durability in outdoor environments.In this study, TiO2@SiO2 core-shell nanocomposites with different coating thicknesses were synthesized by
The current study examined relations between depression risk, anxiety risk, screen time and substance use among adolescents receiving SBIRT Food Service services.Between October 2018 and June 2020, 1701 youth ages 12 to 17 received SBIRT services (47% male, 24.2% non-white).SBIRT screening included the completion of the Patient Health Questionnaire
Monitoring the power distribution of reactor core is one of the most challenging issues in the safe operation of nuclear reactors.The Number and arrangement of detectors Volleyball - Accessories - Bags in a core monitoring system should be determined in a way that maximum amount of information about core states is extracted, while avoiding duplicat