This paper aims to present an experimental and numerical study on the effect of wetting-drying cycles and plasticity index on the California Bearing Ratio (CBR) of lime stabilized clayey soils. The numerical analysis was carried out based on finite element method for comparison between results of experimental and numerical studies. Three clays with different plasticity indices were mixed with v...

Vegetation water stress significantly affects agricultural and tropical forest canopies. Water shortages in crops influence plant water dynamics, reduces primary production and might eventually lead to plant death. Tropical forests are essential part of global carbon and water cycle. Continuing drying of e.g. the Amazon rainforest might accelerate climate change through carbon losses and changi...

Most meteorological soil moisture budgets do not account for soil moisture stress changes in the drying cycle or for changes in ground cover or expanding root system. A simple modulated technique is described which considers these factors. Soil moisture stress determined by this technique has a significantly higher correlation with wheat yield than does moisture stress determined by R common me...

Natural fibre-reinforced cementitious composites are commonly used as outer construction materials. They usually suffer weather a result of being expose to various types climates. In this study, series experimental tests were carried out investigate the deterioration mechanism and mechanical properties mortars incorporating coconut fibres due repeated wetting drying. The results indicated that ...

Background: Drying and rewetting process, frequently occurred during climatic changes, is an important process in soil aggregate slacking and dissolution. The severer interference of human activities on global climate makes the extreme climate scenarios like drought and rainstorm occur frequently. Therefore, there is necessity to further our understanding on the impact of the drying–wetting cyc...

BACKGROUND Filamentous Zygnematophyceae are typical components of algal mats in the polar hydro-terrestrial environment. Under field conditions, they form senescent vegetative cells, designated as pre-akinetes, which are tolerant to desiccation and osmotic stress. KEY FINDINGS Pre-akinete formation and desiccation tolerance was investigated experimentally under monitored laboratory conditions...

An autoradiographic method has been developed by which the presence of soluble intracellular materials can be determined for individual cells (1). Our immediate need for the method was to measure the uptake of H3-thymidine into soluble pools during various stages of the cell life cycle, but it should be applicable to the assay of various soluble radioactive materials in a variety of cell types ...

the present paper is aimed at describing a “closed cycle” power plant schematic (soft, solar oxygen fuel turbine) with macroalgae (seaweed) cultivation in a pond, combustion of its organic matter in a fluidized bed boiler of rankine cycle and return of the combustion products to the pond to feed algae. the oxygen used for combustion is released to atmosphere in photosynthesis. as a renewable fu...

Abstract The understanding of the weakening mechanism tensile strength rock subjected to cyclic wetting-drying is critical for engineering. Tensile tests were conducted on a total 35 sandstone specimens with different cycles. crack propagation process and acoustic emission characteristics tested samples obtained through high-speed camera system. results indicate that observably reduced after we...