Dynamics of Fluid-Filled Catheter Systems by Pulse Testing

Hougen, Joel O.; Hougen, Stephen; Hougen, Thomas J.

doi:10.1021/i100024a600

Cited by 7 publications

(6 citation statements)

References 9 publications

(14 reference statements)

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“…Vapor mole fractions are about 0.02 lower than those from other sources. Data 22 which are more reliable overlap the results of Hoshino et al• Hougen "1925…43 Hougen reports nine ammonia partial pressures in the vapor for low liquid mole fractions and temperatures between…”

supporting

confidence: 69%

Survey and Assessment of Available Measurements on Thermodynamic Properties of the Mixture {Water+Ammonia}

Tillner‐Roth¹,

Friend²

1998

Journal of Physical and Chemical Reference Data

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Mixtures of water and ammonia play an important role in absorption refrigeration cycles and have received attention as working fluids in modern power generation cycles. For design and simulations during the development of any application, the thermodynamic properties have to be known accurately. Measurements of available thermodynamic data are compiled and summarized. The data sets are compared, using a Helmholtz free energy formulation. Recommendations are given for which data sets are suited to serve as a basis for an equation of state formulation of the thermodynamic properties of ͕waterϩammonia͖. Gaps in the database are shown to give experimenters orientation for future research.

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supporting

confidence: 69%

Survey and Assessment of Available Measurements on Thermodynamic Properties of the Mixture {Water+Ammonia}

Tillner‐Roth¹,

Friend²

1998

Journal of Physical and Chemical Reference Data

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“…Various relationships based on Langmuir-Hinshelwood kinetics (8,9) were tested for the N20/C,H, reaction over manganese(II1) oxide on the basis of statistical criteria (10,11). The equation which gave the best correlation for all of the rate order data was adopted.…”

Section: Discussionmentioning

confidence: 99%

Oxidation of 1-butene by nitrous oxide over manganese(III) and related transition metal oxides

Ross¹,

Fairbridge²

1984

Can. J. Chem.

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The oxidation of 1-butene by nitrous oxide over manganese(II1) oxide was studied in a continuous flow system from 573 to 673 K. Kinetic parameters were derived from the exponential relationship: r = ka P::~P:~;, over reactant partial pressure ranges, 0.30 < PN20 < 2.60 kPa and 0.43 < PC,,, < 8.27 kPa. The reaction mechanism proposed involves a complex sequence of steps which include surface radical reactions. On the basis of a comparison of specific reaction rates, the catalytic activity series for the reaction over a number of transition metal oxides was: Introduction The catalytic performance of manganese oxides in several redox reactions involving hydrocarbons with oxygen or nitrogen oxides has been reported recently. The work has included the oxidation of ethane by nitric oxide over unsupported manganese(II1) oxide (1) and the oxidation of 1-butene and ethane by oxygen over manganese(II1) oxide supported on carbon fibres (2). The results of these experiments pointed to complex surface mechanisms with rate-controlling steps most probably associated with the interactions of species within the adsorbed layer.In the present investigation an attempt has been made to evaluate the kinetics of the catalysis of 1-butene by nitrous oxide over manganese(II1) oxide. Measurements of reaction rates were supplemented by structural analysis. A general comparison of the catalytic activities in the reaction of metal oxides of the first transition series has also been carried out.

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“…aged 10 weeks, were obtained from Mollegaard (Skensved, Denmark). A detailed investigation has demon strated that these athymie rats lack functional T lymphocytes [26,27], The athymie and euthymie rats were kept under barrier conditions at the breeders. They were transported in special boxes equipped with air filters and maintained in conventional conditions at our animal units, and allowed to eat and drink ad libitum.…”

Section: Animalsmentioning

confidence: 99%

Immune Responses to a Nippostrongylus brasiliensis Infection in Athymic and Euthymic Rats: Surface Expression of IgE Receptors, IgE Occupancy and Secretory Ability of Mast Cells

Chen

Enerbäck²

1996

Int Arch Allergy Immunol

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The significance of T cells in an allergy-related immune response was investigated. Athymic, nude (Lewis rnu/rnu) rats lacking T lymphocytes and euthymic (Lewis +/+) rats were infected with the nematode Nippostrongylus brasilensis. The density and occupancy of IgE receptors on peritoneal mast cells were quantified using a cytofluorometric method. The secretory ability of the mast cells as a function of anti-IgE challenge was evaluated in terms of histamine releasability in vitro. It was found that the IgE receptors were markedly up-regulated and the IgE occupancy increased on the mast cells of both athymic and euthymic rats during the parasite infection. However, at its peak, IgE occupancy was significantly higher in euthymic rats than in athymic ones. To our knowledge, this is the first proof of the possibility of a T-cell-independent IgE response in vivo. The IgE-mediated histamine releasability of mast cells was significantly enhanced 1 week after the infection in euthymic rats but not in athymic ones. These results thus indicate that the IgE immune response can occur in the absence of, but is augmented by, T cells. They also suggest that the concept of the IgE response should be widened to comprise not only increased IgE production but also an up-regulation of IgE receptors and an increase in IgE occupancy on mast cells, as well as an increase in the secretory ability of these cells. The latter is T cell dependent, although it is not directly related to the density of IgE-receptor complexes on the mast cells but is more likely due to a stimulation of the post-receptor signal transduction mechanism.

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Dynamics of Fluid-Filled Catheter Systems by Pulse Testing

Cited by 7 publications

References 9 publications

Survey and Assessment of Available Measurements on Thermodynamic Properties of the Mixture {Water+Ammonia}

Survey and Assessment of Available Measurements on Thermodynamic Properties of the Mixture {Water+Ammonia}

Oxidation of 1-butene by nitrous oxide over manganese(III) and related transition metal oxides

Immune Responses to a <i>Nippostrongylus</i> <i>brasiliensi</i><i>s</i> Infection in Athymic and Euthymic Rats: Surface Expression of IgE Receptors, IgE Occupancy and Secretory Ability of Mast Cells

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