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Saturday, May 16, 2020 | History

3 edition of contribution to the investigation of the temperature coefficient of osmotic pressure found in the catalog.

contribution to the investigation of the temperature coefficient of osmotic pressure

a redetermination of the osmotic pressures of cane sugar solutions at 20...

by W. Mansfield Clark

  • 272 Want to read
  • 6 Currently reading

Published in Baltimore .
Written in English

    Subjects:
  • Osmosis

  • ID Numbers
    Open LibraryOL23290998M

    Effect of osmotic pressure on drug release. The result of release studies in media of different osmotic pressure showed that the in vitro release of ATN and AMB is highly dependent on the osmotic pressure of the release media (Table 6). Drug release from the formulation decreased as the osmotic pressure of the media increased (Fig. 10 & 11). In chemistry, a solution is a special type of homogeneous mixture composed of two or more substances. In such a mixture, a solute is a substance dissolved in another substance, known as a mixing process of a solution happens at a scale where the effects of chemical polarity are involved, resulting in interactions that are specific to solvation.

    He showed that it was possible to write for solutions an equation PV = iRT, analogous to the gas equation where P is the osmotic pressure instead of the gaseous pressure, R the gas constant, V the volume, T the absolute temperature, and i a coefficient that is sometimes equal to unity but for the salts is greater than unity. Thus, van’t Hoff.   where ρ f is the mass density of the solution, and b and L are the width and length of the sample, respectively. This added mass effect should control the time scale of the actuation, rather than Cited by: 1.

    Poromechanics VI: Proceedings of the Sixth Biot Conference on Poromechanics. Pressure and Temperature Non-Linear Fronts in Porous Rocks during Extensional Earthquakes, with Application to the L’Aquila Earthquake Contribution of Osmotic Transport on Oil Recovery from Rock Matrix in Unconventional Reservoirs.   The acclimation process of Arabidopsis thaliana plants was monitored under moderately changed environmental conditions: temperature changes (±5°C), phosphate and nitrogen deficiency, elevated salt and higher osmotic pressure. All these different conditions were successfully established in a hydroponic system, and comparative analyses were Cited by: 2.


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Contribution to the investigation of the temperature coefficient of osmotic pressure by W. Mansfield Clark Download PDF EPUB FB2

Buy A Contribution to the Investigation of the Temperature Coefficient of Osmotic Pressure: A Redetermination of the Osmotic Pressures of Cane Sugar Studies of Johns Hopkins University for t on FREE SHIPPING on qualified orders. Osmosis is a special type of diffusion, namely the diffusion of water across a semipermeable membrane.

Water readily crosses a membrane down its potential gradient from high to low potential (Fig. ) [4].Osmotic pressure is the force required to prevent water. A contribution to the investigation of the temperature coefficient of osmotic pressure; a redetermination of the osmotic pressures of cane sugar solutions at 20⁰.

(Baltimore, ), by W. Mansfield Clark (page images at HathiTrust) A study of the semi-permeable membranes of zinc ferrocyanide and of copper cobalticyanide. The osmotic pressure of polyelectrolyte solutions is controlled by contribution from counterions and salt ions [1,2,3,4,5,6,7,8,9,10,11,12,13,14].The unique feature of polyelectrolyte solution at low salt concentrations is that its osmotic pressure significantly exceeds the osmotic pressure of neutral polymers at the same polymer by: For the theoretical analysis of the temperature-enhanced PRO process, M NaCl solution, comparable to the osmotic pressure of municipal wastewater, was used as FS, meanwhile M and M NaCl solutions, having comparable osmotic pressure to seawater and reverse osmosis brine, were used as DS, respectively.

Experimental setupCited by: 4. temperature and concentration, then the net osmotic pressure must be less than that of the concentration gradient only, that is, Δ π ¼ a Δ C b Δ T (33).

Unit. The unit of osmotic concentration is the is a non-SI unit of measurement that defines the number of moles of solute that contribute to the osmotic pressure of a solution.A milliosmole (mOsm) is 1/1, of an osmole.A microosmole (μOsm) (also spelled micro-osmole) is 1/1, of an osmole.

Salt Effect on Osmotic Pressure of Polyelectrolyte Solutions: Simulation Study Article (PDF Available) in Polymers July with Reads How we measure 'reads'.

This paper presents a study on the potential of osmotic energy for power production. The study includes both pilot plant testing and theoretical modelling as well as cost estimation. A projected cost of £30/MWh of clean electricity could be achieved by using a Hydro-Osmotic Power (HOP) plant if a suitable membrane is used and the osmotic potential difference between the two solutions is Cited by: 6.

where Π is defined as osmotic pressure (N/m2), C is solute concentration (mol/m3), T is temperature (K), and R is universal gas constant ( J/mol K). J Salt water can. The maintenance of adequate body fluid volume and the correct distribution of this fluid between the body compartments is a critical part of homeostasis.

The process of osmosis plays an important role in movement of fluid within the body and the use of osmometry is an important part of the management of many patients. In addition to the application of osmometry to the measurement of Cited by: osmotic pressure fi of magnitude given by RTn RT where N signifies the actual number of molecules contained in a gram-molecule.

It will be shown in the next paragraph that the molecular-kinetic theory of heat actually leads to this wider con- ception of osmotic pressure. pz-- V*N"Ñ'v' fj-2, OSMOTIC PRESSURE FROM THE STANDPOINT. The effect of the laser beam wavelength and pulse width on micro grooving: Comparison of nanosecond and femtosecond laser Nonaka, S., Mori, T., Takata, Y.

& Kohno, M., Dec 1ASME 10th Int. Conf. on Nanochannels, Microchannels, and Minichannels Collocated with the ASME Heat Transfer Summer Conference and the ASME Fluids Engineering Division Sum, ICNMM p. However, for body temperature, an osmotic pressure of p osm = mol m −3 × J mol −1 K −1 × K = kPa can be at least estimated.

If red blood cells were to be suspended in pure water, they would have to withstand about 8 times normal atmospheric : Georg Job, Regina Rüffler. A simple student laboratory on osmotic flow, osmotic pressure, and the reflection coefficient.

Am J Physiol S10–S20, Abstract Google Scholar; 6. Gorter E, Grendel F. On bimolecular layers of lipids on the chromocytes of the blood. J Exp Med –, doi: /jem Crossref | PubMed Google Scholar; by: 2. Inverse length (in model of Lifson and Katchalsky) A.

Repeating unit (in model of Lammertz et al.) \({A_{\phi}} \) Debye-Hückel Parameter. A s,s. Second osmotic virial coefficient for interactions between solutes S in water. A s,s,s. Third osmotic virial coefficient for interactions between solutes S in water.

aCited by: 4. Both osmotic pressure and B 2 measurements have long been used in studies of the thermodynamic properties of protein solutions (Kupke ; Adams et al. ), but it is only in about the last decade that a renewed interest in these approaches has been stimulated by interest in developing rational methods to crystallize proteins.

George and Wilson () made an important contribution in Cited by: CHEMICAL ENGINEERING AND CHEMICAL PROCESS TECHNOLOGY- Thermodynamic Properties and Models for Engineering Application - Georgios M. Kontogeorgis ©Encyclopedia of Life Support Systems (EOLSS) C.J.

van Oss, D.R. Absolom, A.W. Neumann (). Applications of net repulsive van der Waals forces. For the osmotic experiments, the nutrient solution was rapidly exchanged with nutrient solution containing 30 mM NaCl (60 mOsmol kg −1). To minimize the effect of unstirred layers, the medium was stirred with aeration during all experiments.

The changes in root pressure in response to the osmotic change in the medium were by:   The reflection coefficient for a particular solute and a particular membrane is usually defined as the ratio of the osmotic pressure difference produced by that solute across that membrane to the osmotic pressure difference that would result if the solute were totally impermeant [47, 49].

The name “reflection coefficient” stems from its Cited by:. This experimental development, which he wrote about in his book Osmotische Untersuchungen (osmotic investigations), led to Jacobus van’t Hoff’s work on The role of osmotic pressure in the analogy between solutions and gases,in which he showed how osmotic pressure may be understood in the same way as gas pressure.

The first Nobel Cited by: The 13th International Conference on Low Temperature Physics, organized by the National Bureau of Standards, Los Alamos Scientific Laboratory, and the University of Colorado, was held in Boulder, Colorado, August 21 to 25,and was sponsored by the National Science Foundation, the U.

S. Army Office of Scientific Research, the U. S. Atomic Energy Commission, the U. S. Navy Office of Naval.The osmotic pressure of a solution is the force with which the molecules of the solute, like gaseous molecules, strive to diffuse into space, and press on the limits which confine them, the containing vessel being represented by the surfaces of the solution.

Osmotic pressure is measured in exactly the same way as gaseous pressure.