Chem Engg
In drying operations, this period occurs after the critical moisture content is reached, when drying rate is controlled by internal diffusion.
What is the falling-rate period?
In non-Newtonian fluid flow, this model describes fluids with a yield stress followed by a linear relationship between shear stress and shear rate.
What is the Bingham plastic model?
The chemical formula C6H12O6 is common to both glucose and this other monosaccharide, which is its stereoisomer.
What is fructose?
In “A Study in Scarlet,” Sherlock Holmes first meets this character, who becomes his lifelong friend and biographer.
Who is Dr. John Watson?
In distillation, the minimum reflux ratio can be determined graphically using this method.
What is the McCabe–Thiele method?
This dimensionless group compares the characteristic time for convection to that for thermal conduction in a fluid.
What is the Peclet number?
In distillation column troubleshooting, this problem occurs when high vapor velocity forces liquid up the column, reducing separation efficiency.
What is entrainment?
This branch of mathematics studies shapes, sizes, and the properties of space, and its name comes from the Greek for “earth measurement.”
What is geometry?
In Greek mythology, he is known for flying too close to this Sun, causing his wax wings to melt.
Who is Icarus?
In heterogeneous catalysis, this effect occurs when reactant molecules strongly bind to active sites, blocking access for other reactants.
What is catalyst poisoning?
This dimensionless group predicts whether natural convection will occur by relating buoyancy to viscous forces.
What is the Grashof number?
In reaction engineering, this form of the Arrhenius equation accounts for changes in collision frequency due to molecular orientation.
What is the modified Arrhenius equation?
This SI unit measures the rate of radioactive decay and is equivalent to one disintegration per second.
What is the becquerel?
Known for A Tale of Two Cities and Oliver Twist, this author wrote vivid depictions of Victorian England.
Who is Charles Dickens?
In liquid–liquid extraction, if the slope of the operating line equals the slope of the equilibrium curve, this operational limit is reached.
What is the pinch point?
This parameter, often denoted as ϕ\phiϕ, in catalyst pellet analysis determines the relative importance of reaction rate to diffusion rate within the particle.
What is the Thiele modulus?
In heat exchangers, this correction factor is applied to the LMTD method when temperature profiles deviate from ideal counter-current or co-current flows.
What is the F-factor (LMTD correction factor)?
In mathematics, this field studies properties of numbers that remain unchanged under continuous deformation, such as stretching or twisting, but not tearing.
What is topology?
Edmond Dantès escapes from prison and becomes rich to take revenge in this novel by Alexandre Dumas.
What is The Count of Monte Cristo?
In reactor stability analysis, a negative slope in the rate–temperature curve of an exothermic reaction often indicates this operating hazard.
What is thermal runaway?
In packed absorption towers, this undesirable phenomenon occurs when liquid prefers specific paths, reducing mass transfer area.
What is channeling?
In gas–liquid reactors, this number compares the rate of gas absorption to the rate of chemical reaction inside the liquid film.
What is the Hatta number?
This type of symmetry in physics involves invariance under a shift in time and leads to the conservation of energy, according to Noether’s theorem.
What is time-translation symmetry?
his Agatha Christie novel features Poirot investigating a murder aboard a snowbound luxury train.
What is Murder on the Orient Express?
This dimensionless number compares inertial forces to surface tension forces and is important in droplet formation.
What is the Weber number?