Seismic loading has always been a major concern for any engineering structures, and thereby, underground facilities (e.g., tunnels) are not exceptional. It is due to the seismically induced uplift instability of tunnels caused by large deformation liquefiable soils. Therefore, tunnel behaviors subjected seismic taken into account in designing stages tunnels. This study's main goal was evaluate ...

Tunnel engineering develops rapidly. To study the dynamic response of shield tunnel structure and its bottom soil layer caused by metro train operation, a three-dimensional finite-difference calculation method is used to establish tunnel-soil coupling model based on project Maluan Central Station-Jimei Island Station Xiamen Metro Line 6, operation calculated. The results show that: Under action...

Handling stress is a well-recognised source of variation in animal studies that can also compromise the welfare of research animals. To reduce background variation and maximise welfare, methods that minimise handling stress should be developed and used wherever possible. Recent evidence has shown that handling mice by a familiar tunnel that is present in their home cage can minimise anxiety com...

Since, both the relative position of tunnels and the construction procedure affect the soil movement and internal forces in the lining, it is of major concern to study the influence of these factors on the tunnel design. Construction procedures of tunnels have considerable effects on the magnitude of surface movements and lining stresses. This paper describes numerical analysis of construction ...

Interaction between the nascent polypeptide chain and the ribosomal exit tunnel can modulate the rate of translation and induce translational arrest to regulate expression of downstream genes. The ribosomal tunnel also provides a protected environment for initial protein folding events. Here, we present a 2.9 Å cryo-electron microscopy structure of a ribosome stalled during translation of the e...

The zero bias anomaly (ZBA) of the tunnel conductivity are investigated in the Al/δ−GaAs tunnel structure with 2D electron concentration in δ-layer to be equal to 3.6∗10 cm−2. We find that the dip (ZBA) in the tunnel density of states near the Fermi level EF reveals logarithmic dependence on the energy ε in the range kT < ε< h̄/τ . Here ε is the energy relative to EF and τ is the elastic relaxat...

By combining model testing and numerical simulation, this paper focuses on the influence of landslides tunnels in loess-bedrock strata by using perfect landslide–tunnel system (LTS). A mechanical test simulation (MTS) was used to provide thrust for loading unloading trailing edge slope. Particle Image Velocimetry (PIV) 32 cluster strain gauges were adopted monitor deformation tunnel structure l...

In contrast to straight tunnels, the mechanisms of displacement surrounding soil induced by shield excavation small radius curved tunnels are more complex. Based on field monitoring data surface settlement and horizontal a tunnel in section Zhengzhou Metro Line 3, numerical model using three-dimensional finite element method is established evaluate factors soil. The results verify validity simu...

Effective mole control is often difficult to achieve. Various types of traps, baits, and fumigants have been developed over the years to reduce mole damage to lawns, golf courses, and other areas. Two studies were conducted in the St. Louis, Missouri area to field test products currently registered by the EPA for mole control. Reliable census methods are required to determine efficacy. The best...

The regional research is conducted on the mechanical properties and performance of loess in slop northern Shaanxi Province, China. On precondition conforming to related technical regulations, equipment was purchased or selfdesigned machined conduct large-scale in-situ direct shear test participatory a high slope Through multiple field tests red soils four-level platform side engineering tunnel,...