The geogrid-reinforced soil structures play important roles in the reinforcement applications since 1980s. Generally in design of the geogrid-reinforced soil structures, the soil-geogrid interaction behavior is not directly considered. Instead, the interaction strength is represented by the consolidation drained strength of soil commonly. However, neglecting the effect of compaction and suction...

This paper investigates the instability of vertical vibrations an object moving uniformly through a tunnel embedded in soft soil. Using indirect Boundary Element Method frequency domain, equivalent dynamic stiffness tunnel-soil system at point contact with object, modelled as mass-spring or limiting case single mass, is computed numerically. stiffness, original 2.5D model reduced to discrete mo...

Using two-dimensional foraging arenas, laboratory tests were conducted to investigate the effect of soil type, soil moisture level and ambient temperature on the exploratory tunneling by Coptotermes formosanus Shiraki. In choice arenas consisting of two substrate types having two moisture levels each, and conducted at a constant temperature of 22 °C, a significantly greater proportion of termit...

Translation of the TnaC nascent peptide inhibits ribosomal activity in the presence of l-tryptophan, inducing expression of the tnaCAB operon in Escherichia coli. Using chemical methylation, this work reveals how interactions between TnaC and the ribosome are affected by mutations in both molecules. The presence of the TnaC-tRNA(Pro) peptidyl-tRNA within the ribosome protects the 23S rRNA nucle...

The behaviour of the stabilized lateritic soil obtained from Amaoba, Nigeria treated with green crude oil was statistically studied using analysis of variance with interaction, Kruskal-Wallis test, and expected mean square methods to validate the effect of the additive on the strength properties of the stabilized soil. First a preliminary test was conducted on the soil to classify the soil as a...

Objectives of the Doctoral Program Structural, Seismic and Geotechnical Engineering SSGE consists of the disciplines and techniques that allow to understand, model and control the behavior of: (a) structural materials (concrete, steel, masonry, composites, bio-materials and materials for micro-systems), (b) structural systems (from constructions to bio-mechanical systems and micro-systems), (c)...

Objectives of the Doctoral Program Structural, Seismic and Geotechnical Engineering SSGE consists of the disciplines and techniques that allow to understand, model and control the behavior of: (a) structural materials (concrete, steel, masonry, composites, bio-materials and materials for micro-systems), (b) structural systems (from constructions to bio-mechanical systems and micro-systems), (c)...

Grazing and fire and are major forces shaping patterns of native and exotic species diversity in many grasslands, yet both of these disturbances have notoriously variable effects. Few studies have examined how landscape-level heterogeneity in grassland characteristics, such as soil-based variation in biomass and species composition, may contribute to variation in the effects of fire or grazing....