[1] A mechanistic model is derived for the rate of fluvial erosion into bedrock by abrasion from uniform size particles that impact the bed during transport in both bed and suspended load. The erosion rate is equated to the product of the impact rate, the mass loss per particle impact, and a bed coverage term. Unlike previous models that consider only bed load, the impact rate is not assumed to...

Osteoprotegerin (OPG) is a recently discovered protein related to the tumor necrosis factor receptor family. It has been shown to inhibit ovariectomy (ovx)-induced resorption in rats and increase bone mineral density in young mice. Tail suspension is a procedure that inhibits bone formation in maturing rodents. This study was designed to quantify OPG's effect on cortical bone formation. Fifty-f...

Suspension bridges are critical, lifeline, civil structures that have been constructed in many countries due to their superior effectiveness when it comes long spans, which other bridge system cannot handle, see fig. 1. In this paper, we study a mathematical model for one-dimensional suspension problem with nonlinear damping. The takes into consideration the vibration of deck vertical plane and...

Jihadists are very active on Twitter but their accounts frequently get suspended. A debate over the effectiveness of suspension has arisen; an important factor is that Jihadists quickly create new accounts, resurging back like the moles in the “whack-a-mole” game. This causes biases for terrorism and intelligence analysts. Whilst widely acknowledged, little research investigates the problem. In...

Anoikis is apoptosis initiated upon cell detachment from the native extracellular matrix. Since survival upon detachment from basement membrane is required for metastasis, the ability to resist anoikis contributes to the metastatic potential of breast tumors. miR-200c, a potent repressor of epithelial to mesenchymal transition, is expressed in luminal breast cancers, but is lost in more aggress...

The complex formation pressure system and diverse fluid components during deepwater deep drilling make it easy for gas intrusion accidents to occur. dissolution suspension of the intruded in difference between gas–liquid phase distribution characteristics gas–water two-phase flow wellbore lead errors calculation overflow assessment after intrusion. In this article, a multiphase model, consideri...

Three-dimensional trabecular architecture was investigated in the femora of tail-suspended young growing rats, and the effects of jump exercise during remobilization were examined. Five-week-old male Wistar rats (n = 35) were randomly assigned to five body weight-matched groups: tail-suspended group (SUS; n = 7); sedentary control group for SUS (S(CON); n = 7); spontaneous recovery group after ...

Ultracryotomy of fixed tissue has been investigated for a number of years but, so far, success has been limited for several reasons. The simple technique herein reported allows the ultracryotomy not only of a variety of tissues but also of single cells in suspension, with a preservation and visualization of ultrastructural detail at least equivalent to that obtained with conventional embedding ...

We simulate cluster formation of model colloidal particles interacting via DLVO (Derjaguin, Landau, Vervey, Overbeek) potentials. The interaction potentials can be related to experimental conditions, defined by the pH-value, the salt concentration and the volume fraction of solid particles suspended in water. The system shows different structural properties for different conditions, including c...

In August 2005, the Global Fund to fight AIDS, Tuberculosis and Malaria (the Global Fund) Secretariat suspended its five grants to Uganda following a PricewaterhouseCoopers audit report that exposed gross mismanagement in the Project Management Unit. How could this have been avoided? How can other countries avoid a similar pitfall? We argue that if a legitimate and fair decision-making process ...