منابع مشابه
Microscopic PIV measurements for electro-osmotic flows in PDMS microchannels
Electro-osmosis is the flow produced by the action of an electric field on a fluid with a net charge, which is created by the Zeta potential and confined in the Debye layer. This basic phenomenon in the electro-kinetic transport plays an important role in the microfluidic systems being explored today because it can be applied to a variety of MEMS devices. This paper presents global and point-wi...
متن کاملOsmotic Pressure Measurements of Phase-Separating Protein Solutions
Measurements of the osmotic pressure of aqueous solutions of Bovine y-crystallin and of chicken-egg-white lysozyme were made as a function of solute concentration at T=20+1 °C. The equation of state for solutions of each of these proteins, of the form fll=f(c,T), was thus traced along this isotherm for protein concentrations up to 225 mg/ml. Osmotic pressure measurements were performed using a ...
متن کاملMeasurements of serum colloid osmotic pressure are of limited usefulness.
We examined the usefulness of serum colloid osmotic pressure measurement in patients with chronic rather than acutely occurring low serum protein concentrations. We used two oncometers, the IL 186 Weil Oncometer and the Wescor Model 4100; results from the two instruments were interchangeable. Values for the colloid osmotic pressure were compared with those for serum total protein (r = 0.783) an...
متن کاملDifferentiation of osmotic and secretory diarrhoea by stool carbohydrate and osmolar gap measurements.
Clinical features and laboratory tests that determine carbohydrate in faeces were evaluated to determine which was best able to distinguish between osmotic and secretory diarrhoea in infants and children. For this purpose 80 boys aged 3 to 24 months, with acute watery diarrhoea, were studied prospectively. The faecal osmolar gap (FOG) was calculated as: serum osmolarity-[2 x (faecal sodium + po...
متن کاملOsmotic propulsion: the osmotic motor.
A model for self-propulsion of a colloidal particle--the osmotic motor--immersed in a dispersion of "bath" particles is presented. The nonequilibrium concentration of bath particles induced by a surface chemical reaction creates an osmotic pressure imbalance on the motor causing it to move. The ratio of the speed of reaction to that of diffusion governs the bath particle distribution which is e...
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ژورنال
عنوان ژورنال: Annals of Botany
سال: 1898
ISSN: 1095-8290,0305-7364
DOI: 10.1093/oxfordjournals.aob.a088716