abstract the prediction of active earth pressures is essential to the design of retaining walls in case of reinforced and unreinforced soils. in this study, a new analytical method is presented to determine the coefficient of earth pressure. the horizontal slice method is used to compute the active earth pressure behind a rigid retaining wall in consideration of the granular soils. to verify th...

Abstract. Diatoms are an extraordinarily successful group of organisms and their many thousands species have diversified specialized so as to occupy every environmental niche. Part success derives from unique protective cell walls, beautifully elaborate structures made pure silica. However, living inside walls this rigid, refractory material creates problems. Just how diatoms circumvent these p...

large panel precast structures are analyzed based on the connection rigidity. however, the connections undergo nonlinear and inelastic response, when subjected to seismic loads. thus, to study the actual behavior of structure, the connection nonlinearity should be implemented in the joints. in this paper, three conventional connection types are modeled based on the envelope of their cyclic resp...

Molecular dynamics computer simulations are used to investigate a silica melt confined between walls at equilibrium and in a steady–state Poisseuille flow. The walls consist of point particles forming a rigid face–centered cubic lattice and the interaction of the walls with the melt atoms is modelled such that the wall particles have only a weak bonding to those in the melt, i.e. much weaker th...

Experiments and simulations reveal that rigid fibers suspended at high concentration in a viscous fluid can be aligned the vorticity direction using shearing flow. Creating alignment requires an oscillatory shear over limited range of strain amplitudes. The suspension must also confined, as only those particles near bounding walls align.

Abstract The studies that compare the metastatic potential of tumor cell clusters in microcirculation to single cells show contribute significantly metastasizing. is conditioned by presence cancer near vessel walls. Detailed understanding dynamical behavior walls can thus elucidate process adhesion. We have developed a biomechanical model capable simulating both strong and weak adhesion among c...

Cysts of Giardia lamblia and Entamoeba histolytica and oocysts of Toxoplasma gondii and Cryptosporidium parvum are the infectious and sometimes diagnostic forms of these parasites. To discover the structural components of cyst and oocyst walls, we have developed strategies based upon a few simple assumptions. Briefly, the most abundant wall proteins are identified by monoclonal antibodies or ma...