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abstract sirenomelia is a rare anomaly of caudal region of the body presented with fusion of lower limbs in which genito-urinary, gastrointestinal, cardiovascular and neural tube anomalies are found in most cases. we introduce a case of severe oligohydramnios, which had characteristic aspects of sirenomelia at the time of delivery and review the pertinent articles. all in all it is our aim to p...

A grid is a geographically distributed resource sharing environment across multiple organizations. The most typical grid resources are clusters with the high performance/cost ratio. In general, these clusters are shared as non-dedicated grid resources since local users may run their jobs simultaneously. Local jobs are usually queued and processed in a batch mode with uncertain waiting time whil...

successful application of a tbm in a project requires investigating both the ground conditions and the machine and backup system design features. prediction of the machine performance is very important as it has a big effect on the duration of the project and the costs. in this respect, both penetration rate and advance rate must be estimated. utilization factor, which depends on the type of op...

Wall displacements and ground pressure acting on the lining of a tunnel increase with time. These time-dependent deformations are both due to face advance effect and to the time-dependent behavior of the rock mass.  Viscoelastic materials exhibit both viscous and elastic behaviors. Thorough this study, the effect of different linear viscoelastic models including Maxwell, Kelvin and Kelvin-Voigt...

BACKGROUND 'Advance directives' are instructions given by an individual regarding future health care decisions should they become incapacitated. AIM To explore the issues for GPs when introducing advance directives to their patients as a basis for further research into this process. METHOD Interviews with GPs before and after the introduction of advance directives to patients during a norma...