Solutions of Urea and Tetramethylurea in Formamide and Water: A Comparative Analysis of Volume Characteristics and Solute–Solute Interaction Parameters at Temperatures from 288.15 to 328.15 K and Ambient Pressure

2019 ◽  
Vol 64 (12) ◽  
pp. 5886-5899
Author(s):  
Evgeniy V. Ivanov ◽  
Andrey V. Kustov ◽  
Elena Yu Lebedeva
Keyword(s):  
Comparative Analysis ◽  
Ambient Pressure ◽  
Interaction Parameters ◽  
Solute Interaction ◽  
Volume Characteristics

Effect of intrathoracic pressure on pressure-volume characteristics of the lung in man

1975 ◽  
Vol 38 (3) ◽  
pp. 411-417 ◽  
Author(s):  
H. S. Goldberg ◽  
W. Mitzner ◽  
K. Adams ◽  
H. Menkes ◽  
S. Lichtenstein ◽  
...  
Keyword(s):  
Negative Pressure ◽  
Total Lung Capacity ◽  
Human Subjects ◽  
Ambient Pressure ◽  
Intrathoracic Pressure ◽  
Dynamic Compliance ◽  
Positive Pressure ◽  
Lung Capacity ◽  
Airway Opening ◽  
Volume Characteristics

Quasi-static pressure-volume (P-V) curves in normal seated human subjects were determined with pressure at the airway opening (Pa0) set below (negative pressure), above (positive pressure), or equal to ambient pressure. Dynamic compliance (Cdyn) during controlled continuous negative pressure breathing (CNPB) was also studied. Quasi-static P-V curves at negative pressure were decreased in slope, reflected a decrease in total lung capacity, and intersected the P-V curve obtained at ambient Pa0. At positive pressure the P-V curves showed an increase in slope and an increase in total lung capacity. During CNPB a fall in Cdyn was found. The fall in Cdyn was rapid and persisted for the duration of CNPB. Cdyn promptly returned to control levels when Pa0 was adjusted to ambient pressure.

Determination of Interaction Parameters for Reversibly Self-Associating Antibodies: A Comparative Analysis

2018 ◽  
Vol 107 (7) ◽  
pp. 1820-1830 ◽  
Author(s):  
Mandi M. Hopkins ◽  
Cherie L. Lambert ◽  
Jared S. Bee ◽  
Arun Parupudi ◽  
David L. Bain
Keyword(s):  
Comparative Analysis ◽  
Interaction Parameters

Pressure-Tuning in the Search for Improved Thermoelectric Materials

1998 ◽  
Vol 545 ◽  
Author(s):  
D. A. Polvani ◽  
J. F. Meng ◽  
C. D. W. Jones ◽  
F. J. DiSalvo ◽  
J. V. Badding
Keyword(s):  
Rare Earth ◽  
Phase Space ◽  
Thermoelectric Properties ◽  
Thermoelectric Materials ◽  
Traditional Approach ◽  
Ambient Pressure ◽  
Single Point ◽  
Interaction Parameters ◽  
Orbital Energy ◽  
Pressure Tuning

AbstractThe traditional approach to the search for improved materials, such as thermoelectric materials, involves the sequential synthesis and characterization of new compounds, followed by the investigation of their properties. Each single solid state compound has materials interaction parameters (e.g., degree of orbital overlap, orbital energy, band energies etc.) that determine its thermoelectric properties. These interaction parameters can be used to define a phase space, in which individual compounds are represented by a single point. Because this phase space can be rapidly explored with pressure, our efforts have focused on the synthesis of complex semiconductors and rare earth based materials, followed by pressure-tuning studies of their thermoelectric properties. This approach to exploring interaction parameter phase space potentially allows the thermoelectric power to be more rapidly and cleanly optimized than is possible with the traditional approach. Here we present some results for rare earth thermoelectric compounds that have been pressure-tuned. Demonstration of the existence of materials with improved ZT at high pressure can also provide insight into the structural and electronic parameters necessary to achieve high figures of merit at ambient pressure.

Sign in / Sign up

Export Citation Format

Share Document