Gas-liquid critical temperatures of mixtures containing electron donors

1977 ◽  
Vol 30 (2) ◽  
pp. 401 ◽  
Author(s):  
GJ Campbell ◽  
RL Hurle ◽  
SP Lie ◽  
CL Young
Keyword(s):  
Interaction Energy ◽  
Diethyl Ether ◽  
Thermodynamic Data ◽  
Fluid Model ◽  
Specific Interaction ◽  
Energy Parameter ◽  
Electron Donors ◽  
The Other ◽  
Specific Interactions ◽  
Critical Temperatures

The gas-liquid critical temperatures, Tcm, of some mixtures of the electron donors, triethylamine, diethyl ether and diisopropyl ether with n-alkanes, benzene and hexafluorobenzene are reported. By using the van der Waals one-fluid model, an interaction energy parameter, ξ, has been calculated for each mixture from the values of T°m. The values of ξ for the n-alkane+electron donors are fairly close to unity, indicating that, as would be expected, there are no strong specific interactions between the unlike molecules. The values of ( for the electron donors with benzene give no definite indication of specific interactions. On the other hand, values of ξ for the electron donors with hexafluorobenzene indicate a specific interaction between the unlike molecules. These conclusions are discussed in relation to those reached from a consideration of other thermodynamic data.

The gas-liquid critical properties of alkane mixtures: Cycloalkanes + n-Alkanes and Cycloalkanes + Branched Alkanes

1977 ◽  
Vol 30 (10) ◽  
pp. 2103 ◽  
Author(s):  
KN Marsh ◽  
CL Young
Keyword(s):  
Interaction Energy ◽  
Fluid Model ◽  
Van Der Waals ◽  
Energy Parameter ◽  
Critical Properties ◽  
Critical Temperatures ◽  
Branched Alkanes

The gas-liquid critical temperatures, Tcm of cycloalkane + n-alkane and cycloalkane + branched alkane mixtures are reported. The interaction energy parameter, ξ(expressing the deviation from the Berthelot combining rule), has been calculated for each mixture from the values of Tcm using the van der Waals one-fluid model. The values of ξ are within 0.5% of unity.

Upper critical solution temperatures of hydrocarbon + fluorocarbon mixtures : mixtures with specific interactions

1980 ◽  
Vol 33 (3) ◽  
pp. 465 ◽  
Author(s):  
LS Toczylkin ◽  
CL Young
Keyword(s):  
Equation Of State ◽  
Interaction Energy ◽  
Hard Sphere ◽  
Fluid Model ◽  
Energy Parameter ◽  
Specific Interactions ◽  
The One ◽  
Critical Solution Temperatures

The upper critical solution temperatures of a series of compounds with perfluorotributylamine and with perfluorocyclohexene are reported. From these results the interaction energy parameter, ξ, has been calculated by using a hard sphere+attractive term equation of state, together with the one-fluid model. The values of ξ for these mixtures and a few calculated from literature upper critical solution temperatures have been discussed in terms of possible specific interactions between pairs of unlike molecules.

Molecular tapes in the structure of isoguaninium chloride

2017 ◽  
Vol 74 (1) ◽  
pp. 108-112 ◽  
Author(s):  
Urszula Anna Budniak ◽  
Paulina Maria Dominiak
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Charge Density ◽  
Interaction Energy ◽  
Electrostatic Interaction ◽  
Electrostatic Interactions ◽  
The Other ◽  
X Ray Diffraction ◽  
X Ray ◽  
Diffraction Structure

Isoguanine, an analogue of guanine, is of intrinsic interest as a noncanonical nucleobase. The crystal structure of isoguaninium chloride (systematic name: 6-amino-2-oxo-1H,7H-purin-3-ium chloride), C5H6N5O+·Cl−, has been determined by single-crystal X-ray diffraction. Structure analysis was supported by electrostatic interaction energy (E es) calculations based on charge density reconstructed with the UBDB databank. In the structure, two kinds of molecular tapes are observed, one parallel to (010) and the other parallel to (50\overline{4}). The tapes are formed by dimers of isoguaninium cations interacting with chloride anions. E es analysis indicates that cations in one kind of tape are oriented so as to minimize repulsive electrostatic interactions.

Operational Time and Melt Fraction Based Optimization of a Phase Change Material Longitudinal Fin Heat Sink

2018 ◽  
Vol 10 (6) ◽  
Author(s):  
D. Jaya Krishna
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Heat Sink ◽  
Fluid Model ◽  
Melting Behavior ◽  
Base Temperature ◽  
Critical Temperatures ◽  
Volume Of Fluid Model ◽  
Change Material ◽  
Operational Time

Abstract In the present study, the numerical investigation has been performed for a phase change material (PCM)-based longitudinal fin heat sink. The fins are taken as an integral part of the heat sink and are made up of aluminum. The PCM considered in the study is RT44HC. Heat is transferred to the heat sink through its horizontal base. In order to simulate the melting behavior of the PCM, volume of fluid model has been used. To attain the best configuration with optimum operational time, Taguchi method has been used followed by analysis of melt fraction and maximum base temperature. The optimized heat sink configuration with maximum operational time has been obtained at the critical temperatures of 54.8 °C, 63 °C, and 72.6 °C.

Precisely controlled molecular imprinting of glutathione-s-transferase by orientated template immobilization using specific interaction with an anchored ligand on a gold substrate

2014 ◽  
Vol 5 (16) ◽  
pp. 4764-4771 ◽  
Author(s):  
Yuri Kamon ◽  
Ryo Matsuura ◽  
Yukiya Kitayama ◽  
Tooru Ooya ◽  
Toshifumi Takeuchi
Keyword(s):  
Thin Films ◽  
Molecular Imprinting ◽  
Molecularly Imprinted Polymer ◽  
Specific Interaction ◽  
Specific Interactions ◽  
Synthetic Route ◽  
Gold Substrate ◽  
Imprinted Polymer ◽  
Glutathione S Transferase ◽  
Molecularly Imprinted

We demonstrate a novel synthetic route for molecularly imprinted polymer (MIP) thin films using a bottom-up approach utilizing protein–ligand specific interactions.

scholarly journals The complexities of ‘otherness’: reflections on embodiment of a young White British woman engaged in cross-generation research involving older people in Indonesia

2014 ◽  
Vol 35 (5) ◽  
pp. 986-1010 ◽  
Author(s):  
MERIEL NORRIS
Keyword(s):  
Older People ◽  
Empirical Research ◽  
The Other ◽  
Specific Interactions ◽  
Potential Influence ◽  
Dynamic Nature ◽  
Mixed Area ◽  
Embodied Experiences ◽  
Active Nature ◽  
Methodological Concern

ABSTRACTIf interviews are to be considered embodied experiences, than the potential influence of the embodied researcher must be explored. A focus on specific attributes such as age or ethnicity belies the complex and negotiated space that both researcher and participant inhabit simultaneously. Drawing on empirical research with stroke survivors in an ethnically mixed area of Indonesia, this paper highlights the importance of considering embodiment as a specific methodological concern. Three specific interactions are described and analysed, illustrating the active nature of the embodied researcher in narrative production and development. The intersectionality of embodied features is evident, alongside their fluctuating influence in time and place. These interactions draw attention to the need to consider the researcher within the interview process and the subsequent analysis and presentation of narrative findings. The paper concludes with a reinforcement of the importance of ongoing and meaningful reflexivity in research, a need to consider the researcher as the other participant, and specifically a call to engage with and present the dynamic nature of embodiment.

Nonlinear scattering of whistlers by lower hybrid and ion Bernstein modes

1980 ◽  
Vol 23 (1) ◽  
pp. 141-146 ◽  
Author(s):  
M. S. Sodha ◽  
R. R. Sharma ◽  
V. K. Tripathi
Keyword(s):  
Growth Rate ◽  
Fluid Model ◽  
Whistler Wave ◽  
The Other ◽  
Lower Hybrid ◽  
Nonlinear Scattering ◽  
Stimulated Scattering ◽  
Homogeneous Plasma ◽  
Hybrid Waves ◽  
Lower Hybrid Waves

Following the fluid model for the response of electrons, it is shown that a high-power whistler wave decays efficiently into a lower hybrid or a Bernstein mode and a scattered whistler wave in a homogeneous plasma. The thresholds for these channels of stimulated scattering are generally low. However, the channel of scattering involving lower hybrid waves is possible only for scattering angles exceeding ¼π. The other channel involving Bernstein modes is possible at shorter scattering angles but the growth rate is relatively small and the threshold is high.

Carbohydrate-Carbohydrate Recognition Promotes Cell Adhesion

2005 ◽  
Vol 872 ◽  
Author(s):  
Christine Gourier ◽  
Eric Perez ◽  
Yongmin Zhang ◽  
Pierre Sinaÿ
Keyword(s):  
Cell Adhesion ◽  
Specific Interaction ◽  
High Sensitivity ◽  
Second Step ◽  
Specific Interactions ◽  
Carbohydrate Recognition ◽  
Giant Vesicles ◽  
Angle Measurements ◽  
Contact Angle Measurements ◽  
New Type

AbstractRecently, carbohydate-carbohydrate recognition has emerged as a new type of interaction in cell adhesion processes. One of these carbohydrates, the LewisX determinant (LeX), has been shown to be involved in murine embryogenesis. Here we confirm the existence of this specific interaction by measuring the adhesion between giant vesicles functionalised with synthetic Lex bearing lipids providing to the LeXdeterminent a high orientational freedom. This was obtained by micropipette aspiration and contact angle measurements. By using a simple model involving the several contributions to the adhesion free energy, specific and non specific interactions could be separated and quantified. In a second step, using natural Lex bearing sphingolipids, we could underscore the high sensitivity of LeX-LeX recognition to molecular structure and prove that the possible orientations provided by the natural LeX bearing molecules not only allow but strongly favor LeX-LeX recognition.

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