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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
391

Two-phase frictional pressure drop in laminar, stratified flows

Bowen, Larry Eugene 08 1900 (has links)
No description available.
392

Experimental study of two phase flow: effect of surface tension on pressure drop

Barnett, Samuel Clarence 12 1900 (has links)
No description available.
393

An experimental investigation of buoyancy-driven countercurrent two-phase flow in inclined channels

Ritenour, Eric Micheal 05 1900 (has links)
No description available.
394

Heat transfer resulting from a turbulent, submerged jet impinging on a phase change material

Bhansali, Anil P. 08 1900 (has links)
No description available.
395

A study of a nonlinear amplitude equation modelling spherical couette flow

Harris, Derek January 2001 (has links)
No description available.
396

Experimental and theoretical phase behaviour and viscosity measurements on a North Sea crude oil, NGL and their mixtures

Ahrabi, F. January 1987 (has links)
No description available.
397

A mass spectrometric study of translational energy release in the reactions of gas phase cations

Mahdi, A. M. January 1987 (has links)
No description available.
398

Synthesis of liquid crystalline oligopeptides and discotic molecules designed for additional structure formation

Carswell, Robert John January 1998 (has links)
No description available.
399

Laser desorption and high resolution studies in quadrupole ion trap mass spectrometry

Bristow, Anthony Walter Thomas January 1996 (has links)
No description available.
400

A study of phagocytosis in amoebae of Dictyostelium discoideum

Mealing, David January 1987 (has links)
A study has been made of the effects of various treatments on the phagocytosis of 14C-labelled E.coli by amoebae of Dictyostelium discoideum. An assay was also developed for the adhesion of amoebae to glass and the effects of a number of inhibitors on this process have been investigated. The phagocytosis of bacteria was inhibited by chelating agents at millimolar concentrations. The effect of chelators was not apparent in the presence of added divalent cations. However, only a small reduction in cell-glass adhesion was seen with EDTA concentrations that caused large reductions in phagocytosis. The calcium ionophore, A23187 abolished phagocytosis at 40 ug/ml. Pretreatment of amoebae with lanthanum ions completely inhibited both phagocytosis and cell-glass adhesion at low concentrations. Both phagocytosis and adhesion to glass are also strongly inhibited by calmodulin antagonists. Neither cytochalasin B or colchicine affected phagocytosis. Concanavalin A strongly inhibited phagocytosis presumably due to a direct interaction with cell surface glycoproteins, since the effect did not occur in the presence of alpha-methyl mannoside. Both phagocytosis and adhesion to glass were greatly reduced on treatment of the amoebae with tunicamycin, again suggesting glycoprotein involvement. Pretreatment of amoebae for 30 min with 1 mg/ml trypsin or pronase had no effect on phagocytosis, although pretreatment with papain at the same concentration caused some reduction. However, phagocytosis became pronase sensitive on exposure to tunicamycin. Beta-glucosidase also caused a small but consistent reduction in phagocytosis and cell-glass adhesion. Phagosomes were isolated from amoebae by two procedures. In the first, cells were allowed to phagocytose 1 um diameter polystyrene beads. The endocytosed beads were then isolated by flotation on a discontinuous sucrose density gradient. In a second procedure, devised during the course of this work, an attempt was made to isolate phagosomes from ingested glutaraldehyde-fixed E.coli. Analysis of these preparations by SDS-polyacrylamide gel electrophoresis showed a number of differences between them. A comparison of these preparations with "bulk" plasma membrane revealed a considerable similarity of the polypeptide profile with that isolated using fixed E. coli.

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