The drag of two cylindrical intruders in a two-dimensional granular environment is numerically studied by the discrete element method. We find yield force, below which cannot move because interactions with surrounding particles. Above on other hand, can at constant speed. investigate relationship between force and steady speed intruders, where becomes higher as distance decreases. confirm that ...

A polymer electrolyte membrane fuel cell (PEMFC) is defined as a type of used to generate voltage and current. produces very small amount electrical energy about 0.7 volts. So, it essential stack the cells in bipolar plate series connection for production large fulfil requirement. However, required them with uniform pressure distribution order minimize chance BPP, MEA GDL damage, leakage contac...

background : the existing evidence about the clinical situations of the bipolar patients with opioid dependence is scarce. the present study was carried out to compare the clinical features and course of the bipolar disorder type i regarding the two subgroups of opioid dependent and non-dependent. methods : there were 178 adult patients with bipolar disorder type i consecutively referred to the...

objective: vitiligo is a rare side effect of carbamazepine whose exact mechanism is unknown. the aim of this report is to describe a single case of vitiligo induced by carbamazepine . methods: the case was a patient with bipolar i disorder whose medications were changed from valproate to carbamazepine and who developed vitiligo after a short while. we followed the case for about four years when...

Abstract. Bipolar plate is one of the core components a proton exchange membrane fuel cell (PEMFC), in which microchannels with regular distribution separate and distribute gas at anode oxygen/air cathode, remove reaction products from cell. Dimensional deviations affect assembly accuracy, thereby influencing efficiency performance PEMFC. Ultra-thin stainless steel sheet most commonly used mate...

Both hybrid electrostatic filtration and agglomeration technologies can effectively improve the efficiency of fine particle collection. A system with a wire–tube bipolar precharger was developed on basis transverse plate precipitation technology. Theoretical analyses electric field flow distribution showed that uniform high turbulence intensity ion migration in novel precharger. The influence u...