scholarly journals Oil-in-water microemulsion droplets of TDMAO/decane interconnected by the telechelic C18-EO150-C18: clustering and network formation

Soft Matter ◽  
2014 ◽  
Vol 10 (28) ◽  
pp. 5072-5084 ◽  
Author(s):  
Paula Malo de Molina ◽  
Marie-Sousai Appavou ◽  
Michael Gradzielski
Keyword(s):  
Network Formation ◽  
Mixed System ◽  
Polymer Content ◽  
Structure And Dynamics ◽  
Oil In Water ◽  
Self Consistent ◽  
Consistent Picture ◽  
Evolution Of Structure ◽  
Telechelic Polymer

The combination of SANS, DLS, and FCS allows to derive a self-consistent picture of the evolution of structure and dynamics of the mixed system microemulsion/telechelic polymer as a function of the polymer content.

Self-consistent mean-field description of nuclear structure and dynamics—a status report

2010 ◽  
Vol 41 (6) ◽  
pp. 851-856 ◽  
Author(s):  
J. Erler ◽  
W. Kleinig ◽  
P. Klüpfel ◽  
J. Kvasil ◽  
V. O. Nesterenko ◽  
...  
Keyword(s):  
Nuclear Structure ◽  
Mean Field ◽  
Status Report ◽  
Structure And Dynamics ◽  
Self Consistent

scholarly journals Evolution of Structure and Dynamics for a Family of Disordered Proteins

2011 ◽  
Vol 100 (3) ◽  
pp. 519a
Author(s):  
Wade M. Borcherds ◽  
Hongwei Wu ◽  
Anne T. Pine ◽  
Katie M. Mishall ◽  
Gary W. Daughdrill
Keyword(s):  
Disordered Proteins ◽  
Structure And Dynamics ◽  
Evolution Of Structure

Evidence of Chaotic Hierarchy in a Semiconductor Experiment

1989 ◽  
Vol 44 (11) ◽  
pp. 1046-1050 ◽  
Author(s):  
J. Parisi ◽  
J. Peinke ◽  
R. P. Huebener
Keyword(s):  
Fractal Dimensions ◽  
Physical Situation ◽  
Temporal Behavior ◽  
Nonlinear Coupling ◽  
Characterization Methods ◽  
Self Consistent ◽  
Semiconductor System ◽  
Consistent Picture ◽  
Spatio Temporal ◽  
Takens Theorem

We study the cooperative spatio-temporal behavior of semiconductor breakdown via both probabilistic and dynamical characterization methods (fractal dimensions, entropies, Lyapunov exponents, and the corresponding scaling functions). Agreement between the results obtained from the different numerical concepts (e.g., verification of the Kaplan-Yorke conjecture and the Newhouse- Ruelle-Takens theorem) gives a self-consistent picture of the physical situation investigated. As a consequence, the affirmed chaotic hierarchy of generalized horseshoe-type strange attractors may be ascribed to weak nonlinear coupling between competing localized oscillation centers intrinsic to the present semiconductor system

Simulation-Based Unitary Fracking Condition and Multiscale Self-Consistent Fracture Network Formation in Shale

2017 ◽  
Vol 84 (5) ◽  
Author(s):  
Qinglei Zeng ◽  
Tao Wang ◽  
Zhanli Liu ◽  
Zhuo Zhuang
Keyword(s):  
Oil Shale ◽  
Network Formation ◽  
Numerical Models ◽  
Fracture Network ◽  
Extended Finite Element ◽  
Fluid Flux ◽  
Simulation Based ◽  
Self Consistent ◽  
Horizontal Wellbore ◽  
Multiple Clusters

Hydraulic fracturing (fracking) technology in gas or oil shale engineering is highly developed last decades, but the knowledge of the actual fracking process is mostly empirical and makes mechanicians and petroleum engineers wonder: why fracking works? (Bažant et al., 2014, “Why Fracking Works,” ASME J. Appl. Mech., 81(10), p. 101010) Two crucial issues should be considered in order to answer this question, which are fracture propagation condition and multiscale fracture network formation in shale. Multiple clusters of fractures initiate from the horizontal wellbore and several major fractures propagate simultaneously during one fracking stage. The simulation-based unitary fracking condition is proposed in this paper by extended finite element method (XFEM) to drive fracture clusters growing or arresting dominated by inlet fluid flux and stress intensity factors. However, there are millions of smeared fractures in the formation, which compose a multiscale fracture network beyond the computation capacity by XFEM. So, another simulation-based multiscale self-consistent fracture network model is proposed bridging the multiscale smeared fractures. The purpose of this work is to predict pressure on mouth of well or fluid flux in the wellbore based on the required minimum fracture spacing scale, reservoir pressure, and proppant size, as well as other given conditions. Examples are provided to verify the theoretic and numerical models.

Molecular reorientation in crystalline thiophene and furan

1976 ◽  
Vol 54 (17) ◽  
pp. 2773-2782 ◽  
Author(s):  
W. E. Sanford ◽  
R. K. Boyd
Keyword(s):  
Crystal Structure ◽  
Potential Energy ◽  
Crystal Lattice ◽  
Structure Determination ◽  
Dynamic Structure ◽  
Molecular Reorientation ◽  
Potential Energy Calculations ◽  
Self Consistent ◽  
Nmr Techniques ◽  
Consistent Picture

Molecular reorientation processes in crystalline thiophene and furan have been studied using pulse nmr techniques, over a range of temperature. The results obtained have been evaluated in the context of literature data on the heat capacities and crystal structures of these systems; this evaluation has been facilitated by the use of potential energy calculations for a molecule in the crystal lattice, based upon the empirical atom–atom approximation for the intermolecular interactions. In the case of furan, all available data can be reconciled in a self-consistent picture of the dynamic structure of the crystal. In the case of thiophene, however, various inconsistencies suggest that the published crystal structure determination should be repeated, and that further work on the pulse nmr at lower temperatures is necessary.

scholarly journals Activity in Blue Compact Galaxies

1987 ◽  
Vol 121 ◽  
pp. 567-577
Author(s):  
Danielle Alloin
Keyword(s):  
Radio Range ◽  
Self Consistent ◽  
Flux Measurements ◽  
Consistent Picture ◽  
Compact Galaxies

This paper is aimed at providing a review of recent observational facts regarding blue compact galaxies. Tightening together flux measurements from the UV to the radio range now allow us to draw a somewhat improved, more self-consistent picture of these objects. Many questions are still open however, about their nature and evolution.

Building al-Būnī’s Legend

2016 ◽  
Vol 5 (1) ◽  
pp. 1-26
Author(s):  
Jean-Charles Coulon
Keyword(s):  
Middle Ages ◽  
Fourteenth Century ◽  
The Sun ◽  
Magic Squares ◽  
Important Stage ◽  
Self Consistent ◽  
Consistent Picture ◽  
Moyen Âge ◽  
Moyen Age ◽  
The Middle Ages

From the fourteenth century onward, the figure of al-Būnī (d. 622/1225) became the greatest authority in the science of letters (or sīmiyāʾ). His life was not well known in the Middle Ages but some hagiographical notices concerning him circulated. The purpose of this article is to establish ʿAbd al-Raḥmān al-Bisṭāmī’s (d. 858/1454) part in the process of building al-Būnī’s legend. Indeed, ʿAbd al-Raḥmān al-Bisṭāmī’s renowned Shams al-āfāq fī ʿilm al-ḥurūf wa-l-awfāq (The Sun of the Horizons: The Science of Letters and Magic Squares) established al-Būnī the premier authority in the science of letters. Although the Shams al-āfāq clearly aimed to position the science of letters in a mythical background (with biblical references, for example), it also portrayed the Sufi environment in which al-Būnī was thought to live. The biographical notices in which al-Būnī is quoted can help us to understand how al-Bisṭāmī wrote an apparently self-consistent picture of the emergence and transmission of the science of letters. Moreover, some mystical pedigrees in the Shams al-āfāq indicate that this treatise must be one of the sources of the later Shams al-maʿārif al-kubrā since they are almost identical in both texts. Thus, the Shams al-āfāq was an important stage in the diffusion of the image of the figure of al-Būnī and the works attributed to him. La figure d’al-Būnī (m. 622/1225) devint la plus importante autorité dans la science des lettres (ou sīmiyāʾ) à partir du xive siècle. Sa vie n’était pas très bien connue au Moyen Âge mais des notices hagiographiques circulaient. Le but de cet article est de mettre en évidence le rôle de ʿAbd al-Raḥmān al-Bisṭāmī (m. 859/1454) dans la formation de la légende entourant al-Būnī. En effet, son célèbre Shams al-āfāq fī ʿilm al-ḥurūf wa-l-awfāq (Le soleil des horizons: la science des lettres et des carrés magiques) fit d’al-Būnī une autorité majeure dans la science des lettres. Bien que ce travail a clairement pour but de resituer la science des lettres dans un contexte pseudo-historique légendaire (avec des références bibliques par exemple), il décrit également le milieu soufi dans lequel al-Būnī était réputé avoir vécu. Les notices biographiques dans lesquelles al-Būnī est mentionné peuvent nous aider à comprendre comment al-Bisṭāmī écrivit un panorama de l’émergence et de la transmission de la science des lettres cohérent en apparence. En outre, quelques chaînes de transmission du Shams al-āfāq indiquent que ce traité fut une des sources du Shams al-maʿārif al-kubrā. Ainsi, le Shams al-āfāq fut une étape importante dans la diffusion de la figure d’al-Būnī et des ouvrages qui lui furent attribués. This article is in French.

scholarly journals Time-average properties of z ∼ 0.6 major mergers: mergers significantly scatter high-z scaling relations

2019 ◽  
Vol 488 (1) ◽  
pp. 876-893 ◽  
Author(s):  
M Puech ◽  
H Flores ◽  
M Rodrigues ◽  
F Hammer ◽  
Y B Yang
Keyword(s):  
Velocity Dispersion ◽  
Scaling Relations ◽  
Gas Velocity ◽  
The Past ◽  
Gravitational Perturbations ◽  
Self Consistent ◽  
Major Merger ◽  
Consistent Picture ◽  
Time Average ◽  
Kinematic Properties

Abstract Interpreting the scaling relations measured by recent large kinematic surveys of z ≲ 1 galaxies has remained hampered by large observational scatter. We show that the observed ISM and morpho-dynamical properties along the average z ∼ 0.6 major merger describe a very self-consistent picture in which star formation is enhanced during first passage and fusion as a result of gravitational perturbations due to the interaction, while the gas velocity dispersion is simultaneously enhanced through shocks that convert kinematic energy associated with bulk orbital motions into turbulence at small scales. Angular momentum and rotation support in the disc are partly lost during the most perturbing phases, resulting in a morphologically compact phase. The fractions of present-day E/S0 versus later type galaxies can be predicted within only a few per cent, confirming that roughly half of local discs were reformed in the past 8–9 Gyr after gas-rich major mergers. Major mergers are shown to strongly scatter scaling relations involving kinematic quantities (e.g. the Tully–Fisher or Fall relations). Selecting high-z discs relying only on V/σ turns out to be less efficient than selecting discs from multiple criteria based on their morpho-kinematic properties, which can reduce the scatter of high-z scaling relations down to the values measured in local galaxy samples.

scholarly journals FG Sagittae

2002 ◽  
Vol 187 ◽  
pp. 173-186
Author(s):  
Detlef Schönberner ◽  
C. Simon Jeffery
Keyword(s):  
Planetary Nebula ◽  
Central Star ◽  
Critical Assessment ◽  
Evolutionary Models ◽  
Helium Burning ◽  
Mixing Processes ◽  
Processed Material ◽  
Self Consistent ◽  
Consistent Picture ◽  
Existing Data

AbstractFG Sagittae has evolved from a hot central star of a planetary nebula to an K-type supergiant within approximately the last 100 years. The generally accepted interpretation for this redward evolution is that of a late thermal pulse during the planetary nebula stage, wherein helium burning at the surface of the electron-degenerate carbon-oxygen core is reignited. As the star expands in response to the energy released by helium burning, envelope convection digs deeper and deeper until nuclearly processed material may get dredged-up to the stellar surface. Analysing the spectra as FG Sge is evolving would then give unique information about the temporal development of mixing processes occurring inside the star that are otherwise impossible to obtain. The existing abundance analyses do not give, however, a consistent picture. Especially the question about FG Sge’s hydrogen abundance is still unsettled. We present a critical assessment of all the existing data, trying to find a self-consistent picture of the evolution of FG Sge, based on the latest evolutionary models.

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