This paper investigates the influence of the soil electrical conductivity and permittivity dependence with frequency in grounding response to lightning currents. Simulated results for soil with frequency variation of its parameters show: i) a significant reduction of the amplitude values of the transient voltages and impulse impedance; ii) an increase of the expected effective length of electro...

Soil quality assessment is a significant approach for arable land, especially in a coastal region to gain a better understanding of soil productivity and effect of agricultural systems on soil resources. This study aimed to determine the quality of cultivated soil of both urban (Noakhali) and rural areas (Kabirhat and Subarnachar) of Noakhali, Bangladesh. The soil quality was evaluated as soil ...

This paper presents an overview of the DMT and of its design applications, in the light of the experience accumulated over the last 20 years. The following applications are discussed: determining common soil parameters, predicting settlements of shallow foundations, compaction control, detecting slip surfaces in clay slopes, predicting the behavior of laterally loaded piles, evaluating sand liq...

Soil moisture is a key variable that controls the exchange of water and energy fluxes between the land surface and the atmosphere. However, the temporal evolution of soil moisture is neither easy to measure nor monitor at large scales because of its high spatial variability. This is mainly a result of the local variation in soil properties and vegetation cover. Thus, land surface models are nor...

A population of Atta cephalotes was surveyed in 1989 and 1991 at the La Selva Biological Station in Costa Rica. Nests were mapped along trails that passed through old growth forest. Estimates of basic demographic parameters were examined in relationship to general soil categories, suggesting that colony mortality and natality is related to soil type. Results indicated that the population is inc...

Plant samples of Salicornia herbacea were collected from different localities around the northern costal part of Izmir, during the months of June, July, August and September. Salinity and pH of the soils and plants was investigated and the relationship between these parameters tested statistically. The soil salinity values showed that the highest values were obtained in August, but after the ra...

Based on descriptors of n-octanol/water partition coefficients (logKow), molecular connectivity indices, and quantum chemical parameters, several QSAR models were built to estimate the soil sorption coefficients (logKoc) of substituted anilines and phenols. Results showed that descriptor logKow plus molecular quantum chemical parameters gave poor regression models. Further study was performed t...

Predicting the transfer of radionuclides in the environment for normal release, accidental, disposal or remediation scenarios, in order to assess exposure, requires the availability of important generic parameter values. One of the key parameters in environmental assessment, is the solid liquid distribution coefficient, K d , which is used to predict radionuclide–soil interaction and subsequent...

−Monitoring parameters were evaluated for a bioventing process that was designed to treat soils contaminated with diesel fuel. Statistical analyses were conducted to evaluate correlations between total petroleum hydrocarbon concentrations in the contaminated soil and physico-chemical parameters of soil such as microbial counts, dehydrogenase activity, and n-alkane/isoprenoid ratio. The correlat...