scholarly journals The study on permeability ratio curve of polymer/SAA binary system and two-phase of viscous crude

2017 ◽  
Vol 24 (4) ◽  
pp. 615-620
Author(s):  
Ya-nan Wang ◽  
Keyword(s):  
Binary System ◽  
Permeability Ratio ◽  
Two Phase ◽  
Ratio Curve

scholarly journals Anatomy of the massive star-forming region S106

2018 ◽  
Vol 617 ◽  
pp. A45 ◽  
Author(s):  
N. Schneider ◽  
M. Röllig ◽  
R. Simon ◽  
H. Wiesemeyer ◽  
A. Gusdorf ◽  
...  
Keyword(s):  
Binary System ◽  
High Velocity ◽  
Central Area ◽  
Line Emission ◽  
Two Phase ◽  
Star Forming ◽  
Projected Length ◽  
Molecular Lines ◽  
Dark Lane ◽  
Gas Accretion

The central area (40″  × 40″) of the bipolar nebula S106 was mapped in the [O I] line at 63.2 μm (4.74 THz) with high angular (6″) and spectral (0.24 MHz) resolution, using the GREAT heterodyne receiver on board SOFIA. The spatial and spectral emission distribution of [O I] is compared to emission in the CO 16 →15, [C II] 158 μm, and CO 11 →10 lines, mm-molecular lines, and continuum. The [O I] emission is composed of several velocity components in the range from –30 to 25 km s−1. The high-velocity blue- and red-shifted emission (v = −30 to –9 km s−1 and 8 to 25 km s−1) can be explained as arising from accelerated photodissociated gas associated with a dark lane close to the massive binary system S106 IR, and from shocks caused by the stellar wind and/or a disk–envelope interaction. At velocities from –9 to –4 km s−1 and from 0.5 to 8 km s−1 line wings are observed in most of the lines that we attribute to cooling in photodissociation regions (PDRs) created by the ionizing radiation impinging on the cavity walls. The velocity range from –4 to 0.5 km s−1 is dominated by emission from the clumpy molecular cloud, and the [O I], [C II], and high-J CO lines are excited in PDRs on clump surfaces that are illuminated by the central stars. Modelling the line emission in the different velocity ranges with the KOSMA-τ code constrains a radiation field χ of a few times 104 and densities n of a few times 104 cm−3. Considering self-absorption of the [O I] line results in higher densities (up to 106 cm−3) only for the gas component seen at high blue- and red velocities. We thus confirm the scenario found in other studies that the emission of these lines can be explained by a two-phase PDR, but attribute the high-density gas to the high-velocity component only. The dark lane has a mass of ~275 M⊙ and shows a velocity difference of ~1.4 km s−1 along its projected length of ~1 pc, determined from H13CO+ 1 →0 mapping. Its nature depends on the geometry and can be interpreted as a massive accretion flow (infall rate of ~2.5 × 10−4 M⊙ yr−1), or the remains of it, linked to S106 IR/FIR. The most likely explanation is that the binary system is at a stage of its evolution where gas accretion is counteracted by the stellar winds and radiation, leading to the very complex observed spatial and kinematic emission distribution of the various tracers.

scholarly journals Two-Phase and Vapor-Phase Thermophysical Property (pvTz) Measurements of the Difluoromethane + trans-1,3,3,3-Tetrafluoroprop-1-ene Binary System

2020 ◽  
Vol 65 (4) ◽  
pp. 1554-1564 ◽  
Author(s):  
Sebastiano Tomassetti ◽  
Uthpala A. Perera ◽  
Giovanni Di Nicola ◽  
Mariano Pierantozzi ◽  
Yukihiro Higashi ◽  
...  
Keyword(s):  
Binary System ◽  
Thermophysical Property ◽  
Vapor Phase ◽  
Two Phase

Influence of Compressed Carbon Dioxide on the Oxidation of Cyclohexane with Hydrogen Peroxide in Acetic Acid

2006 ◽  
Vol 59 (3) ◽  
pp. 225 ◽  
Author(s):  
Liang Gao ◽  
Tao Jiang ◽  
Buxing Han ◽  
Baoning Zong ◽  
Xiaoxin Zhang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Peroxide ◽  
Acetic Acid ◽  
Binary System ◽  
Reaction System ◽  
Phase Region ◽  
Phase Behaviour ◽  
Phase System ◽  
Two Phase ◽  
Three Phase

The oxidation of cyclohexane with H2O2 in a compressed CO2/acetic acid binary system was studied at 60.0 and 80.0°C, at pressures up to 18 MPa, and with the zeolite TS-1 as catalyst. The phase behaviour of the reaction system was also observed. There are three fluid phases in the reaction system at lower pressure but two at higher pressures. In the three-phase region the yields of the products, cyclohexanol and cyclohexanone, increase considerably with increasing pressure and reaches a maximum near the phase-separating pressure. CO2 can thus enhance the reaction effectively. However, the effect of pressure on the yield is very limited after the transition to a two-phase system.

scholarly journals Two-Phase and Vapor Phase PvTx Properties of the Difluoromethane + cis-1,3,3,3-Tetrafluoroprop-1-ene Binary System

2020 ◽  
Vol 65 (9) ◽  
pp. 4326-4334
Author(s):  
Sebastiano Tomassetti ◽  
Giovanni Di Nicola ◽  
Mariano Pierantozzi ◽  
J. Steven Brown
Keyword(s):  
Binary System ◽  
Vapor Phase ◽  
Two Phase ◽  
Pvtx Properties

scholarly journals Thermodynamic analysis of the Ga-Pb binary system

2003 ◽  
Vol 39 (3-4) ◽  
pp. 465-474 ◽  
Author(s):  
Dragan Manasijevic ◽  
Dragana Zivkovic ◽  
Zivan Zivkovic
Keyword(s):  
Thermal Analysis ◽  
Differential Thermal Analysis ◽  
Binary System ◽  
Binary Systems ◽  
Calculation Model ◽  
Phase Region ◽  
Miscibility Gap ◽  
Two Phase ◽  
Mixing Enthalpies

Thermodynamic properties of binary Ga-Pb alloys were investigated experimentally and analytically. Quantitative differential thermal analysis was used for determination of integral mixing enthalpies for the gallium-reach alloys, at the constant temperature inside the liquid two-phase region. Calculation of gallium activities in the temperature range of 800-1000 K was done using Chou?s calculation model developed for binary systems with miscibility gap existence.

Chemischer Transport intermetallischer Phasen IV: Das System Fe - Ge/Chemical Vapour Transport of Intermetallic Phases IV: The System Fe - Ge

2001 ◽  
Vol 56 (4-5) ◽  
pp. 329-336 ◽  
Author(s):  
O. Bosholm ◽  
H. Oppermann ◽  
S. Däbritz
Keyword(s):  
Phase Diagram ◽  
Binary System ◽  
Phase Diagrams ◽  
Chemical Vapour ◽  
Chemical Transport ◽  
Intermetallic Phases ◽  
Vapour Transport ◽  
Two Phase ◽  
Transport Agent ◽  
Chemical Vapour Transport

Abstract Six phases exist in the binary system iron-germanium Fe3Ge, β, η, Fe6Ge5, FeGe and FeGe2. All phases could be prepared by chemical transport with iodine as transport agent in the temperature range between T1 (600 °C) and T2 (950 °C). Two phase diagrams have been known in the literature from specific experiments of chemical vapour transport. It is now possible to decide which phase diagram is the most valid description.

High Temperature Strength of Ir/Ir2Y Two Phase Alloys in the Ir-Pt-Y System

2010 ◽  
Vol 654-656 ◽  
pp. 424-427
Author(s):  
Nobuaki Sekido ◽  
Yoko Yamabe-Mitarai
Keyword(s):  
High Temperature ◽  
Binary System ◽  
Precipitation Hardening ◽  
Solid Solution Phase ◽  
High Temperature Strength ◽  
Strengthening Mechanisms ◽  
Solution Hardening ◽  
Two Phase ◽  
Fcc Phase ◽  
High Temperature Compressive Strength

Possibilities of heat resistant alloys based on a C15 Laves phase and an FCC phase have been examined in the Ir-Pt-Y ternary system. Although the Ir solid solution phase (A1) and the Ir2Y phase (C15) are not in equilibrium in the Ir-Y binary system, this equilibrium is attained by small Pt additions to the binary system. High temperature compressive strength of an A1/C15 monovariant eutectic alloy was found to be much lower than that of Ir-15Nb, an Ir based γ/γ' alloy. Low strength of the present alloys is attributed to the absence of effective strengthening mechanisms that operate in the A1 phase; for Y is hardly dissolved within the A1 phase, by which solution hardening and precipitation hardening are not available.

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