Abstract There are many nanoscale pores in deep low permeability coal seams. The flow of coalbed methane (gas) belongs to the gas porous media with medium and high Knudsen numbers. Its mechanism is one key unsolved scientific problems. In order explore transport law nanopores coal, a model based on microscopic boundary restriction was adopted describe law, its rationality verified by experiment...

As a typical microfluidic cell sorting technique, the size-dependent cell sorting has attracted much interest in recent years. In this paper, a size-dependent cell sorting scheme is presented based on a controllable asymmetric pinched flow by employing an immersed boundary-lattice Boltzmann method (IB-LBM). The geometry of channels consists of 2 upstream branches, 1 transitional channel, and 4 ...

background and aims: immunohistochemical tests are one of the most important tests, which are under study to determine the prognosis of the cancers such as transitional cell carcinoma. by the time, flexible cystoscopy and urine cytology are the routine tests for following up the patients with transitional cell carcinoma, which are both operator dependent. on the other hand, cystoscopy is an inv...

The underlying mechanisms of three different flow-control strategies on drag reduction in a channel flow are investigated by direct numerical simulations at friction Reynolds numbers ranging from 65 to 85. These include the addition long-chain polymers, incorporation slip surfaces, and application an external body force. While it has been believed that such methods lead skin-friction controllin...

BACKGROUND Systemic sclerosis (SSc) is a systemic autoimmune disease characterized by excessive production of extracellular matrix by fibroblasts on skin and internal organs. Although Th2 cells have been involved in fibroblast stimulation, hyperactivated B cells may also play an important role. Regulatory B cells (Bregs) are cells capable of inhibiting inflammatory responses and controlling aut...

Summary In this study, the seismic performance of hexagrid structures which are composed of horizontal and vertical hexagrid by using a transitional story, has been investigated. To this end, 10 models of 50-story hexagrid structures were designed. 9 models with horizontal hexagrid cells which transited to vertical cells using a transitional story, and a model of completely horizontal hexagrid ...

background: the present study was undertaken to investigate the correlation of epidermal growth factor receptor (egfr) expression with grade of transitional cell carcinoma (tcc). methods: tumor samples of 75 patients from mostafa khomaini hospital with transitional cell carcinoma of the bladder were analyzed by immunohistochemistry for expression of egfr. in this context, we assigned the bladde...

the length and structure of the transitional zone in the tunica media in the renal artery of adult male cats were investigated. in addition, the volume of the lumen and different layers in transitional and nontransitional zones in the right and left sides were also determined. morphometrical, histological and stereological studies were performed on 16 renal arteries of 8 adult male cats. after ...

Workflows are computational representations of business processes. When workflows are changed, a strategy for dealing with actual running workflow instances is needed, since workflows are typically longrunning processes. As the basic strategies abort and flush are rarely applicable, hybrid workflow schemas have to be defined (transitional provisions) for the continuation of these instances. In ...

Mean flow predictions obtained from a host of turbulence models were found to be in poor agreement with recent direct numerical simulation results for turbulent flow distal to an idealized eccentric stenosis. Many of the widely used turbulence models, including a large eddy simulation model, were unable to accurately capture the poststenotic transition to turbulence. The results suggest that ef...