In this study, the progressive collapse potential of seismically designed steel plate shear wall (SPSW) systems is investigated using the alternate path method, and their performances are compared with those of the conventional special moment frame (SMF) systems. Nonlinear static and dynamic analyses are conducted to follow the progressive collapse of the structures, and their ability of absorb...

BACKGROUND The purpose of this study was to examine the effects on blastocyst survival and subsequent pregnancy rate of 'artificial shrinkage' (i.e. induced collapse of the blastocoele) before vitrification of human blastocysts. METHODS After embryo transfer in IVF cycles, surplus embryos that developed to the expanded blastocyst stage were cryopreserved. Before vitrification on electron micr...

Using an isolated, fibrillated canine heart-lung preparation, we studied the effects of simultaneous lung inflation and chest compression on blood flow in a model of cardiopulmonary resuscitation. The heart and lungs were placed in an artificial thorax with the great vessels and trachea exteriorized and attached to an artificial perfusion circuit and respirator, respectively. The blood volume o...

Applying biological concepts to create new models in the computational field is not a revolutionary idea: science has already been the basis for the famous artificial neuron models, the genetic algorithms, etc. The cells of a biological organism are able to compose very complex structures from a unique cell, the zygote, with no need for centralized control (Watson J.D. & Crick F. H. 1953). The ...

Progressive collapse is defined as the spread of an initial damage from one member to another, leading to extensive partial or total collapse of the structure. In this research, the potential of progressive collapse due to a sudden removal of vertical load-bearing elements in reinforced concrete buildings structures with different floor plans such as geometrical regular and irregular floor plan...

In this study, an artificial transparent head surrogate with high-speed photography discovers the formation and collapse of cavitation bubbles near contrecoup regions as is exposed to a sudden translational impact. The damages brain surface produces shock wave through matter. Based on novel experimental design, new finding uncovers mystery motion deformation soft matter, which not visible other...

Estimation of collapse performance is primarily conducted through Collapse Fragility Curves (CFC’s). The EDP-based approach is the main scheme for attaining such curves and employs IDA. Obtaining CFC’s from IDA results is tremendously time consuming and computationally demanding. Introduction of more efficient methods of seismic analysis, can potentially improve this issue. The Endurance Time (...

an alveolus or a bronchiole, from which, if it keeps open long enough, it may absorb large quantities of air. Air embolism, though the most dangerous complication <>f artificial pneumothorax treatment (AP), is so rare, that we suggest the advisability of different workers recording the details of all cases of air embolism so that it may be possible ultimately to establish which of the above is ...

in the first impounding of rockfill dams, additional settlements occur in upstream side in saturated rockfills due to collapse phenomenon even high rainy seasons can cause additional deformation in the dumped rockfills. unfortunately these displacements are not taken into account in the conventional numerical models which are currently used to predict embankment dam behavior during impounding. ...

Data-defectives are always occurred during collecting urban traffic flow information due to all kinds of sensors’ failures. To mend the defective urban traffic flow information data, a new approach named SARBF neural network fitting is presented. It combines analysis based on spatial autocorrelation and RBF neural network fitting method. The complete data is determined to mend the defective dat...