Abstract The consolidation of earth and rock dam foundations its effect on stability is a key concern in water conservancy transportation projects. It common to use the vacuum combined pre-pressure method deal with soft ground foundation, where reasonable selection soil coefficient one important factors determine success project. In this paper, numerical simulation used study strength law found...

Habitat fragmentation is the primary cause of the loss of biodiversity and ecosystem services, but its underlying processes and mechanisms remain poorly understood. Studies of islands and insular terrestrial habitats are essential for improving our understanding of habitat fragmentation. We argue that the Three-Gorges Dam, the largest that humans have ever created, presents a unique grand-scale...

Abstract A late early Maastrichtian dinosaur trampling site is reported from the Farrokhi Formation of Khur area, Central Iran. The largely indeterminate footprints, some which may represent undertracks, can be classified as natural moulds (i.e. concave epireliefs) bordered by a raised rim displaced sediment. They reach diameters up to 0.5 m and were impressed under very shallow subaerial condi...

Dam leakage is a major problem in earth-filled reservoir dams. The present research aimed at detecting the seepage zones an dam vicinity of Sarobi village, North Waziristan, Pakistan. objective was achieved by integrating geological, geotechnical, and geophysical datasets. Geological survey carried out area to identify surface exposures. Geotechnical data involved used estimation permeability L...

The restorative potential of dam removal on ecosystem function depends on the reversibility of dam effects and its operations. While dam removal is an established engineering practice, the need for an understanding of the ecological response remains. We used paleoflood hydrology, hydrologic modeling, and aerial photo interpretation to investigate the long-term ecologic responses to dam failure ...

DNA adenine methyltransferase (Dam) plays an important role in physiological processes of Gram-negative bacteria such as mismatch repair and replication. In addition, Dam regulates the expression of virulence genes in various species. The authors cloned the dam gene of Yersinia enterocolitica and showed that Dam is essential for viability. Dam overproduction in Y. enterocolitica resulted in an ...

The article provides a detailed review of well-known publications devoted to studying the stress state and dynamic behavior earth dams, taking into account elastic elastic-plastic properties soil. To assess stress-strain considering soil under action static loads, mathematical model was developed using principle virtual displacements. A technique, algorithm, computer programs were for estimatin...