scholarly journals Determination of 2D poloidal maps of the intrinsic W density for transport studies in JET-ILW

2018 ◽  
Vol 89 (11) ◽  
pp. 113501 ◽  
Author(s):  
Marco Sertoli ◽  
Joanne Flanagan ◽  
Mikhail Maslov ◽  
Costanza Maggi ◽  
Ivor Coffey ◽  
...  
Keyword(s):  
Transport Studies

A simple method for evaluation of Rb+ transport and Na(+)-K+ pump stoichiometry in adherent cells

1991 ◽  
Vol 260 (6) ◽  
pp. C1341-C1346 ◽  
Author(s):  
N. Longo ◽  
L. D. Griffin ◽  
L. J. Elsas
Keyword(s):  
Simultaneous Determination ◽  
Human Fibroblasts ◽  
Flame Photometry ◽  
Adherent Cells ◽  
Experimental Conditions ◽  
Simple Method ◽  
Cultured Fibroblasts ◽  
Transport Studies ◽  
Transport Inhibitors

This report describes a method based on flame photometry for the evaluation of transmembrane Rb+ transport and Na(+)-K+ pump stoichiometry in adherent cells. In monolayers of cultured fibroblasts, the rates of 86Rb+, an isotope widely used as a K+ congener in transport studies, and nonradioactive Rb+ influx were equivalent when measured in the absence and presence of the transport inhibitors ouabain and bumetanide. Ouabain- and bumetanide-sensitive Rb+ fluxes were also equal with the two methods. Flame photometry allowed the simultaneous determination of intracellular [Na+] in the same sample in which Rb was measured. The incubation of human fibroblasts with ouabain for 5 min promoted a significant increase in intracellular [Na+]. Under appropriate experimental conditions, the ratio between the rate of ouabain-promoted increase in intracellular [Na+] and ouabain-sensitive Rb+ influx was 1.4, close to the theoretical value of 1.5 corresponding to a Na(+)-K+ pump stoichiometry of 3 Na+ extruded from the cell in exchange for 2 K+.

scholarly journals The Origin–Destination Matrix Development

2019 ◽  
Vol 290 ◽  
pp. 06010
Author(s):  
Vasile Dragu ◽  
Eugenia Alina Roman
Keyword(s):  
Factor Model ◽  
Stage Structure ◽  
Decision Making Process ◽  
Transport Models ◽  
Second Stage ◽  
Transport Studies ◽  
System Requirements ◽  
Actual Mobility

Transport studies are conducted for a better understanding of the actual mobility and for developing transport forecasting models to predict the future transport demand and the changes in travel patterns. Transport planning involves the decision-making process for potential improvements to a community’ s roadway infrastructure. The first transport models used to analyze globally the transport system requirements while nowadays models were rethought as a demand – supply interaction reflecting the correlation between transport and socio-economic development. The transport forecasting methodology use a four stage structure consisting of: trip generation, trip distribution, modal split, traffic assignment. In the second stage of the model, the generated trips for each zone are distributed to all other zones based on the choice of destination. The trip pattern is represented by means of an origin-destination (O-D) matrix. The Growth Factor Model and the Gravity Model are two methods to distribute trips among destinations. The two methods for developing the O-D Matrix are presented and criticized in this paper, showing the similarities and differences between them and highlighting the implications for rigorous determination of future transport demand. A case study is done to emphasize the differences between these models and their implications in carrying out transport studies.

Human tracheal mucin: A preliminary study of physicochemical properties and mucociliary transport

1983 ◽  
Vol 91 (5) ◽  
pp. 509-515
Author(s):  
Ralph F. Wetmore ◽  
David T. Brown ◽  
Mitchell Litt ◽  
William P. Potsic
Keyword(s):  
Amino Acids ◽  
Intensive Care Unit ◽  
Intensive Care ◽  
Surgical Patients ◽  
Mucociliary Transport ◽  
Transport Studies ◽  
Functional Differences ◽  
Clinical Correlations ◽  
Preliminary Study

Human tracheal secretions were collected from patients with chronic tracheostomies in the intensive care unit and through an endotracheal tube from pediatric surgical patients under general anesthesia. These secretions were dialyzed, fractionated on an agarose column, and lyophilized to recover the tracheal mucin fraction. Analysis of pooled mucin samples included determination of amino acids, carbohydrates, and sulfates. Intrinsic viscosity, microrheometry, and mucociliary transport studies were also performed. Structural and functional differences between several pools of specimens are cited with an emphasis on possible clinical correlations.

Galactic orbits of stars

1966 ◽  
Vol 25 ◽  
pp. 93-97
Author(s):  
Richard Woolley
Keyword(s):  
Globular Cluster ◽  
Potential Field ◽  
High Velocity ◽  
Velocity Vector ◽  
Variable Stars ◽  
The Sun ◽  
Proper Motions ◽  
Rr Lyrae ◽  
The Galaxy

It is now possible to determine proper motions of high-velocity objects in such a way as to obtain with some accuracy the velocity vector relevant to the Sun. If a potential field of the Galaxy is assumed, one can compute an actual orbit. A determination of the velocity of the globular clusterωCentauri has recently been completed at Greenwich, and it is found that the orbit is strongly retrograde in the Galaxy. Similar calculations may be made, though with less certainty, in the case of RR Lyrae variable stars.

Distance to SN 1987A and the LMC

1999 ◽  
Vol 190 ◽  
pp. 549-554
Author(s):  
Nino Panagia
Keyword(s):  
Angular Size ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Light Curves ◽  
Distance Modulus ◽  
Absolute Size ◽  
Sn 1987A

Using the new reductions of the IUE light curves by Sonneborn et al. (1997) and an extensive set of HST images of SN 1987A we have repeated and improved Panagia et al. (1991) analysis to obtain a better determination of the distance to the supernova. In this way we have derived an absolute size of the ringRabs= (6.23 ± 0.08) x 1017cm and an angular sizeR″ = 808 ± 17 mas, which give a distance to the supernovad(SN1987A) = 51.4 ± 1.2 kpc and a distance modulusm–M(SN1987A) = 18.55 ± 0.05. Allowing for a displacement of SN 1987A position relative to the LMC center, the distance to the barycenter of the Large Magellanic Cloud is also estimated to bed(LMC) = 52.0±1.3 kpc, which corresponds to a distance modulus ofm–M(LMC) = 18.58±0.05.

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