Risk assessment provides the possibility of planning and management to prevent and reduce the risk of desertification. The present study is aimed to assess the hazard and risk of desertification and to develop management programs in the semi-arid western regions of Golestan Province in Iran. Desertification rate was obtained using the Iranian model of desertification potential assessment. Since...

The paper presents the use of tablet pc in archaeology, it explains what is a tablet PC and the steps to draw archaeological remains using a digital photomosaic. It’s described the test made during the experience in the roman town Grumentum in South Italy (2006). The use of a tablet pc in archaeological excavation is a powerful tool for digital documentation. This work explains a method to take...

Seismic hazard assessment for the construction of earthquake-resistant buildings, in particular of critical facilities, in France follows traditionally a deterministic approach. The aim of the French Working Group EPAS (Evaluation Probabiliste de l’Aléa Sismique / Probabilistic Seismic Hazard Assessment), under the aegis of the AFPS (Association Française de Génie Parasismique / French Associat...

Barite is an important additive material to increase the weight of excavation mud. It has been used extensively in the excavation mud industry. The barite particle sizes used in excavation mud is very important. There is a direct relationship between the amount on the sift of 200 and 325 mesh. By reducing particle sizes of the 200 and 325 mesh, the specific gravity of the barite power increased...

INtrODUctION The science of Archaeology has been in existence for a long time and the way an archaeological excavation is conducted hasn't changed much. However, the way archaeological data is recorded has changed dramatically by the progress of technology and the widespread use of computers. Nowadays, almost any archaeological excavation uses databases to record not only the objects which have...

introduction vulnerability is a logical effect outcome from risk of living over the hazardous regions as well as the resiliency capacity of people for recovers the damages of hazard events. vulnerability is a complex phenomenon which can effect and observe in from of environmental, political and c-social-economical vulnerability. according to land subsidence hazard affected over the residential...

As the WFD requires carrying out regular quality assessment of fish population, in the frame of this study sampling was done in 3 sites along Lumebardhi i Pejes river. A list of species composition is completed. Altogether 9 fish species and lamprey (Eudontomyzon stankokaramani) were present in catch. The classification of the ecological status is done by using EFI index. The Lumebardhi i Pejes...

With the aim of probing for design theory of cutterhead excavation system of earth pressure balance (EPB) machine, the parameters representing the system performance are concluded firstly. Then a 3D model for cutterhead excavation system of EPB machine is presented with the discrete element method (DEM) software PFC, which is capable of simulating the tunneling ground in site, the machine struc...

Abstract—Excavation and retaining walls are of challenging issues in civil engineering. In this study, the behavior of one important type of supporting systems called Contiguous Bored Pile (CBP) retaining wall is investigated using a physical model. Besides, a comparison is made between two modes of free end piles (soft bed) and fixed end piles (stiff bed). Also a back calculation of effective ...