Multiwalled carbon nanotubes (MWCNTs) were covalently modified with different molecular weights 400 and 2000 poly(oxyalkylene)-amine bearing DGEBA epoxy (POA400-DGEBA and POA2000-DGEBA) oligomers via a grafting method. The weight-average molecular weights of POA400-DGEBA and POA2000-DGEBA were measured as 1623 and 9231 with polydispersity indices (PDIs) of 2.3 and 1.6, respectively. The oxidize...

The proton exchange membrane fuel cell (PEMFC) technology has drawn considerable attention during past two decades and has potential for automotive applications due to high energy density and low impact on environments [1, 2]. Nevertheless, commercialization of fuel cell vehicles still depends on achieving higher volumetric power density and specific power in order to compete with traditionally...

The operation of a proton exchange membrane fuel cell (PEMFC) is greatly affected by temperature. Reliable thermal management cells can improve the life, efficiency, and power output cells. model established in this paper based on inner layer cell, through analysis heat change material flow between layers, simulink reflect temperature end plate, bipolar electrode assembly (MEA) plate. In terms ...

Most neurons in the developing mammalian brain migrate to their final destinations by translocation of the cell nucleus within their leading process and immature bipolar body that is devoid of synaptic connections. Here, we used a combination of immunohistochemistry at light- and electron-microscopic (EM) levels and time-lapse imaging in slice cultures to analyze migration of synaptically inter...

The disassembly of the mitotic spindle and exit from mitosis require the inactivation of Cdk1. Here, we show that expression of nondegradable cyclinB1 causes dose-dependent mitotic arrest phenotypes. By monitoring chromosomes in living cells, we determined that pronounced overexpression of stable cyclinB1 entailed metaphase arrest without detectable sister chromatid separation, while moderate o...

INTRODUCTION Treatment of femoral neck fractures in young adults may require total hip arthroplasty or hip hemiarthroplasty using a bipolar cup. The latter can, however, result in migration of the femoral head and poor long-term results. CASE PRESENTATION We report a case of femoral head migration after hemiarthroplasty performed for femoral neck fracture that had occurred 22 years earlier, w...

The stainless steel bipolar plate has received much attention due to the cost of graphite bipolar plates. Since the micro-channel of bipolar plates plays the role of fuel flow field, electric connector and fuel sealing, an investigation of the deep drawing process for stainless steel micro-channel arrays is reported in this work. The updated Lagrangian formulation, degenerated shell finite elem...