Abstract The time-dependent stability of tunnels is an important and challenging topic, mainly when the tunnel excavated in incompetent weak rocks. creep property rock one crucial mechanical properties main factor affecting long-term masses. Also, water as environmental influences both short-term behavior rocks causes geotechnical engineering disasters, such collapse, slope sliding, surface sub...

Small food plots are commonly used for managing wildlife and are often planted with high quality forages like ryegrass, clovers, chicory, or even alfalfa. These plots supplement wildlife nutritional needs during times when forage and browse is short or has poor quality. For example, alfalfa, lab lab, or millet food plots can provide high quality forage during summer months when whitetail does a...

The use of recycled construction and demolition (C&D) materials as an alternative backfill in the geosynthetic-reinforced structures, such embankments retaining walls, has been pointed out a sustainable effective means attenuating environmental impacts associated with C&D waste disposal to landfill, while also reducing natural resource depletion. Creep is important time-dependent mechanical pro...

Time-dependent creep stress redistribution analysis of thick-walled FGM spheres subjected to an internal pressure and a uniform temperature field is investigated. The material creep and mechanical properties through the radial graded direction are assumed to obey the simple power-law variation throughout the thickness. Total strains are assumed to be the sum of elastic, thermal and creep strain...

Fault creep, depending on its rate and spatial extent, is thought to reduce earthquake hazard by releasing tectonic strain aseismically. We use Bayesian inversion and a newly expanded GPS data set to infer the deep slip rates below assigned locking depths on the San Andreas, Maacama, and Bartlett Springs Faults of Northern California and, for the latter two, the spatially variable interseismic ...

Creep and relaxation are two viscoelastic phenomena that are easily interrelated for a linearly viscoelastic material, but interrelationships are complex for nonlinearly viscoelastic materials. We use a single-integral nonlinear superposition principle to relate creep and relaxation, where the kernel is assumed to be a nonseparable product of strain and time. Herein, we develop time dependence ...

Introduction: Previous studies have shown that exercise enhances cognitive and functional capacities in patients with Alzheimer's disease (AD). In this study, we investigated the effect of long-term (60 days) and short- term (10 days) exercise on the spatial memory deficits in an animal model of AD. Methods: Fifty male rats were divided into 5 groups 1) intact, 2) sham, 3) sham-Alzheimer 4) ...

background: airport workers are continuously exposed to different levels of radiofrequency microwave (rf/mw) radiation emitted by radar equipments. radars are extensively used in military and aviation industries. over the past several years, our lab has focused on the health effects of exposure to different sources of electromagnetic fields such as cellular phones, mobile base stations, mobile ...

This opinion article argues that noise (randomness) in neural activity is the limiting factor in visual working memory (WM), determining how accurately we can maintain stable internal representations of external stimuli. Sharing of a fixed amount of neural activity between items in memory explains why WM can be successfully described as a continuous resource. This contrasts with the popular con...