(p < 0.001). In an adjusted cox regression model, the elevated WMR was independently predicted the incidence of MACE (hazard ratio 2.419, p < 0.001).
Conclusions:The elevated baseline WMR independently predicted the MACE incidence in patients with NSTE-ACS during long-term follow-up. (Cardiol J 2015; 22, 4: 437-445) Key words: white blood cell to mean platelet volume ratio, non-ST elevation acute coronary syndrome, major adverse cardiovascular events
Asphaltene
deposition is one of the most challenging aspects of
the petroleum industry that takes place through production, processing,
and transportation. In the present study, first, the effect of temperature
on the aggregation kinetics of asphaltene in a heptane–toluene
mixture is investigated during a set of experiments done at different
fixed temperatures. In spite of most previous works in which the collision
efficiency is assumed to be constant and equal to one, the obtained
experimental data in this study provides deep insights into the mechanism
of aggregation of asphaltene particles within an organic medium. A
population balance model considering the fractal structure for asphaltene
aggregates and variable value for collision efficiency is developed
to predict the enlargement of asphaltene floccules with the passage
of time. The results show that the assumption of a constant value
for collision efficiency is not realistic. The calculated value of
collision efficiency decreases with the increase of average particle
size during each experiment. Also, the value of collision efficiency
decreases with the increase of temperature. In the second part of
this work, the zeta potential of asphaltene aggregates in the mixture
is measured during the evolution of floccules in separate tests. These
results are applied to investigate the asphaltene stability and also
to validate the size measurement data obtained in the first part.
The measured zeta potentials of evolving particles indicate that the
asphaltene aggregates are more stable at high temperatures than at
low temperatures. Due to this fact, aggregates reach a significantly
smaller mean size at high temperatures in comparison to that at low
temperatures.
C and control groups, respectively (p = 0.002). The hospital stay was significantly lower in vitamin C group compared with that of the control group (5.32 ± 0.59 vs. 5.74 ± 1.30 days, respectively, p = 0.041). Baseline erythrocyte sedimentation rate (OR 1.030, p = 0.030) and taking vitamin C (OR 8.068, p = 0.007) were the independent predictors of postoperative AF. Conclusions: Oral vitamin C can be safely used to decrease the incidence of postoperative AF in patients undergoing elective isolated on-pump CABG surgery. (Cardiol J 2014; 21, 5: 492-499)
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