Numerical Simulation of the Effect of Freeze-Thaw Cycles on the Axial Compression Strength of Rubber Concrete.

The incorporation of rubber can enhance concrete's durability and effectively reduce the damage caused by freeze-thaw cycling (FTC). Still, there has been only limited research on the damage mechanism of RC at the fine view level. To gain insight into the expansion process of uniaxial compression damage cracks in rubber concrete (RC) and summarize the internal temperature field distribution law during FTC, a fine RC thermodynamic model containing mortar, aggregate, rubber, water, and interfacial transition zone (ITZ) is established in this paper, and the cohesive element is selected for the ITZ part.

Numerical Simulation of Fatigue Life of Rubber Concrete on the Mesoscale.

Rubber concrete (RC) exhibits high durability due to the rubber admixture. It is widely used in a large number of fatigue-resistant structures. Mesoscale studies are used to study the composition of polymers, but there is no method for fatigue simulation of RC.

Bardoxolone treatment alleviates lipopolysaccharide (LPS)-induced acute lung injury through suppressing inflammation and oxidative stress regulated by Nrf2 signaling.

Nuclear factor-erythroid 2 related factor 2 (Nrf2) plays critical roles in attenuating various inflammation- and oxidative stress-induced diseases, including acute lung injury (ALI). Bardoxolone (Bard), a synthetic triterpenoid based on natural product oleanolic acid, is one of the most potent Nrf2 activator. However, if Bard could prevent lipopolysaccharide (LPS)-induced ALI by inducing Nrf2 activation and its down-streaming signals, is still poorly understood.

Edge-tailored graphene oxide nanosheet-based field effect transistors for fast and reversible electronic detection of sulfur dioxide.

Graphene oxide was tailored into GO nanosheets with periodic acid treatment. Interestingly, the latter have a superior sensing performance for the fast and reversible detection of SO(2) compared with the former at room temperature. Its sensing mechanism was proposed from the structural changes of the GO nanosheets during the sensing and recovering processes.

Spontaneous growth of free-standing polypyrrole films at an air/ionic liquid interface.

A novel strategy for the one-pot fabrication of free-standing polypyrrole films is presented in this work. The films are spontaneously formed at an air/ionic liquid interface through interface oxypolymerization. The thicknesses of the films are finely controlled from tens to hundreds of nanometers, and the films are uniform and compact.

Control the diameters of mesoporous silica nanotubes by varying stirring time.

A chiral cationic gelator derived from L-alanine was synthesized. Sol-gel transcriptions were carried out to control mesoporous silica nanostructures using the organic self-assemblies of this gelator as templates. It was found that the morphologies of the obtained mesoporous silicas were sensitive to stirring time.

Formation of hollow mesoporous silica nanoworm with two holes at the terminals.

A chiral low-molecular-weight amphiphile, L- 18Ala11PyPF(6), was synthesized from L-alanine. Hollow silica nanoworms with circular pore channels parallel to the shell surfaces and holes at the terminals were prepared using the self-assemblies of it as templates via a single-templating approach. The formation of this hierarchical structure was studied by taking TEM images after different reaction time and changing reaction conditions.

From branched self-assemblies to branched mesoporous silica nanoribbons.

Branched left-handed twisted mesoporous silica nanoribbons were prepared via a template method.

Handedness inversion in preparing mesoporous silica nanoribbons.

A new chiral cationic amphiphile has been synthesized. Sol-gel transcriptions were carried out to control mesoporous silica nanostructures using the organic self-assemblies of this amphiphile as templates. Left-handed coiled mesoporous silica nanoribbons were obtained in the mixture of 1-propanol and 2.

The formation of helical mesoporous silica nanotubes.

Three chiral cationic gelators were synthesized. They can form translucent hydrogels in pure water. These hydrogels become highly viscous liquids under strong stirring.