bluuebunny/crossref_metadata_2025 huggingface dataset:
Assessment of the Regional Knowledge Index for Sustainable Development of Siberian Mining Regions
Authors: Kukushkin Sergey , Kalenov Oleg
Published: June 2019

At present time, the issue of defining indicators of sustainable development corresponds to the processes of modern economy development such as digitalization, technological convergence. They are going to replace mining from GDP of industrial countries and decease environmental pressure by expanding economy of knowledge. For the first time, the knowledge index was calculated by the World Bank. It should be noted that the World Bank calculated the indices for each individual country. This would allow developing the necessary decisions and government policies to build a knowledge economy. This goal is pursued by the authors of the article, but in relation to the sustainable development of the mining regions of Russia. The article discusses various approaches to assessing the regional knowledge index, and proposes a new methodology for its assessment based on the main determinant of the matrix and its logarithm. Based on the proposed methodology, the knowledge index was evaluated, which shows the conditions for the knowledge economy development in the mining regions of Russia. The rating of the mining regions of Siberian Federal District was built. The main conditions affecting the formation of the knowledge economy in the mining regions of Siberia in the context of their sustainable development are identified.
Aggregate Index of Sustainable Development of Mining Regions in Siberian Federal District
Authors: Senchenko Yevgenya , Fakhrislamova Yelena
Published: June 2019

Currently, governments of both developed and developing countries are interested in forming an adequate analytical tool for assessing the effectiveness of measures taken for the transition to sustainable development. These tools should take into account the dualism of sustainable development, in which the acceleration of economic growth, inspired by scientific and technological progress, should be correlated with a decrease in the negative anthropogenic impact on the environment. In this regard, widespread methods for assessing the prospects for the transition to sustainable development is the calculation of indices that aggregate the dynamics of socio-economic and environmental processes at the global, national and regional levels. This article identifies mining regions of Siberian Federal District as an object, the assessment of which is carried out on the basis of the Governmental methodology of Russian Federation, adapted to the objectives of the study of the prospects for the transition to sustainable development. The result of the study is the ranking of mining regions of the Siberian Federal District on the integral index of sustainable development and the defining the dominant trend.
On Developing Transversal Competences of Modern Engineers for Coal Mining Emerging
Authors: Dobrydina Tatiana , Kersh Natasha , Kononova Valentina , Shipilova Tatiana , Usvyat Nadezhda
Published: June 2019

Currently, coal mining as well as practically all leading industries requires such management specialists who are able to solve new tasks in complex and constantly changing conditions. The paper highlights the ways to contribute to the formation of future specialists’ competencies to satisfy the demands of present-day labour market. The paper aims to uncover some underpinning competences of coal-mining engineers in addition to technical skills presented as a Top Ten Transversal Competences’ Checklist for Coalminers (TTTCCC). This paper takes the form of a discussion relating to the needs and requirements of English language education of a modern coal-mining engineer in Russia. Some examples of low efficiency in university English for Specific Purposes (ESP) teaching bring to a number of possible solutions in and outside the mining university language classrooms.
The Role of Coal-Mining Museum in Kuzbass Coal Industry Development
Authors: Kuznetsov Dmitry , Novoklinova Anna , Rabkina Nadezda , Valko Olga
Published: June 2019

A museum cluster is a phenomenon that did not acquire conceptual understanding until the late 1990s. Since then, numerous approaches to defining a museum cluster have been put to the test. It has been unanimously stated that a museum cluster is an environment-creating and culture-forming entity, which catches the spirit of the time/place and embodies the locus genii. The museum, thus, renews and strengthens itself in the urban, scientific and cultural thought. These apply well to Krasnaya Gorka, a museum cluster in Kemerovskaya oblast. Combining all ‘cluster’ characteristics, Krasnaya Gorka features very specific, historically and culturally valuable trends eventually transforming the urban environment and forming local traditions. The study is aimed at comprehensive research of a museum cluster contribution to the local culture, environment, science, economy and, most importantly, people. The study showed that: (1) the Krasnaya Gorka museum is justifiably the heart of a cluster; (2) the archival materials in city museums are valuable as integral historic documents in their own right, but more significant when regarded along with other papers and artefacts in the domain of the museums, forming the cluster; c) the Krasnaya Gorka museum is a culture-forming entity due to its aggregating people and organizing activities.
Nonlinear tidal flows in short-period planets
Authors: Barker A.J.
Published: June 2019

I discuss two related nonlinear mechanisms of tidal dissipation that require finite tidal deformations for their operation: the elliptical instability and the precessional instability. Both are likely to be important for the tidal evolution of short-period extrasolar planets. The elliptical instability is a fluid instability of elliptical streamlines, such as in tidally deformed non-synchronously rotating or non-circularly orbiting planets. I summarise the results of local and global simulations that indicate this mechanism to be important for tidal spin synchronisation, planetary spin-orbit alignment and orbital circularisation for the shortest period hot Jupiters. The precessional instability is a fluid instability that occurs in planets undergoing axial precession, such as those with spin-orbit misalignments (non-zero obliquities). I summarise the outcome of local MHD simulations designed to study the turbulent damping of axial precession, which suggest this mechanism to be important in driving tidal evolution of the spin-orbit angle for hot Jupiters. Avenues for future work are also discussed.
The turbulent response to tidal and libration forcing
Authors: Favier B. , Grannan A. , Le Reun T. , Aurnou J. , Le Bars M.
Published: June 2019

In conjunction with thermo-solutal convection, the turbulence generated in planetary liquid cores may be due to the role of boundary forcing through geophysically relevant mechanisms such as precession, libration and tidal forcing (Le Bars et al. 2015). In this paper, we discuss laboratory equatorial velocity measurements and selected high-resolution numerical simulations to show the generation of developed turbulence driven by longitudinal libration or tidal forcing. In both cases, the transition to saturated turbulence is driven by an elliptical instability that excites inertial modes of the system. We find striking similarities in both the transition to bulk turbulence and the enhanced zonal flow hinting at a generic fluid response independent of the forcing mechanism. We finally discuss the relevance of this work to the planetary regime and possible directions for future investigations.
Fingering convection in accreting hydrogen white dwarfs
Authors: Wachlin F.C. , Vauclair S. , Vauclair G. , Althaus L.G.
Published: June 2019

The accretion of heavy material from debris disk on the surface of hydrogen-rich white dwarfs induces a double diffusivity instability known as the fingering convection. It leads to an efficient extra mixing which brings the accreted material deeper in the star than by considering only mixing in the surface dynamical convection zone, in a time scale much shorter than that of gravitational settling. We performed numerical simulations of a continuous accretion of heavy material having a bulk Earth composition on the two well studied DAZ and ZZ Ceti pulsators GD 133 and G 29-38. We find that the existence of fingering convection implies much larger accretion rates to explain the observed abundances than previous estimates based on the standard mixing length theory and gravitational settling only.
Stellar dynamics of low mass stars from the surface to the interior measured by CoRoT and Kepler
Authors: García R.A.
Published: June 2019

Continuous high-precision photometry of stars provided by space missions such as CoRoT, Kepler, and K2 represents a unique way to study stellar rotation and magnetism. The coupling of these studies of the surface dynamics with asteroseismology is changing our view to surface and internal dynamics. In this proceedings I will provide the latest developments in the understanding of surface and internal rotation and magnetic fields. I will also discuss the possible discovery of strong internal magnetic fields of dynamo origin in the convective cores of stars above 1.2–1.4 solar masses. I will finish by providing constraints on gyrochronology laws for low-mass stars and put the Sun into context of its magnetism when compared to other solar-analog stars.
Excitation of internal gravity waves by penetrative convection
Authors: Pinçon C. , Belkacem K. , Goupil M.J.
Published: June 2019

We investigate the ability of internal gravity waves that are generated by penetrative convection to redistribute angular momentum in the internal radiative zone of evolved low-mass stars. To do so, we use the semianalytical excitation model recently proposed by Pinçonet al.  2016. We briefly report the preliminary results of the study focusing on the subgiant and red giant branch stars.
Boussinesq convection in a gaseous spherical shell
Authors: Korre L. , Brummell N. , Garaud P.
Published: June 2019

In this paper, we investigate the dynamics of convection in a spherical shell under the Boussinesq approximation but considering the compressibility which arises from a non zero adiabatic temperature gradient, a relevant quantity for gaseous objects such as stellar or planetary interiors. We find that depth-dependent superiadiabaticity, combined with the use of mixed boundary conditions (fixed flux/fixed temperature), gives rise to unexpected dynamics that were not previously reported.
Rehabilitation nach Polytrauma
Authors: Simmel Stefan
Published: June 2019

Die Rehabilitation nach schweren Unfällen ist von der „normalen“ orthopädischen Rehabilitation nach elektiven Eingriffen abzugrenzen. Die Herausforderungen dabei erfordern spezielle Prozesse, Infrastrukturen sowie ineinander übergehende und aufeinander abgestimmte Rehabilitationsphasen. Zwischen der Entlassung aus der Akutklinik und dem Beginn der postakuten Rehabilitation klafft häufig ein „Reha-Loch“, das es zu schließen gilt.
Für Sie analysiert – Nationale VersorgungsLeitlinie Asthma
Authors: Moers Stephanie
Published: June 2019

Die überarbeitete Nationale VersorgungsLeitlinie (NVL) Asthma bestätigt der Atemphysiotherapie mit einer starken Empfehlung ihren wichtigen Stellenwert in der Asthmatherapie. Ebenso dem körperlichen Training. Um die Patienten dahingehend zu motivieren, sollten Physiotherapeuten noch stärker als kompetente beratende Partner in der Versorgung von Patienten mit Asthma wahrgenommen werden. Themenscout Stephanie Moers hat die NVL für physiopraxis analysiert.
Physikalische Therapie der nicht exsudativen altersabhängigen Makuladegeneration
Authors: Lauermann Jost Lennart , Eter Nicole , Alten Florian
Published: June 2019

Trotz des Erfolgs der Anti-VEGF-Therapien (VEGF: vascular endothelial growth factor) bei der neovaskulären altersabhängigen Makuladegeneration (AMD) im zurückliegenden Jahrzehnt gibt es zahlreiche noch ungelöste Herausforderungen in der AMD-Therapie. Um Patientengesundheit zu verbessern und Gesundheitssysteme zu entlasten, erscheint die Entwicklung neuer Interventionsmöglichkeiten von großer Wichtigkeit, die bereits die Progression einer AMD-Frühform in eine Spätform verhindern oder verzögern können. Im Bereich der physikalischen Behandlungsansätze der nicht exsudativen AMD gibt es bis dato kein anerkanntes Therapieverfahren. Es erscheint gegenwärtig sinnvoll, die Forschungsbemühungen im Bereich der intraokularen Blaufilterlinsen und der Subthreshold-Laserbehandlung im Rahmen prospektiver Studien weiterzuverfolgen. Der folgende Artikel soll eine Übersicht über die aktuellen Strategien einer physikalischen Therapie der nicht exsudativen AMD geben.
A Review of the Phytochemistry, Traditional Uses, and Biological Activities of the Genus Ballota and Otostegia
Authors: Rosselli Sergio , Fontana Gianfranco , Bruno Maurizio
Published: June 2019

The 2 genera Ballota and Otostegia, belonging to the Lamiaceae family, are closely related taxonomically and found mainly in the Mediterranean area, Middle East, and North Africa. Since ancient times, they have been largely employed in traditional medicine for their biological properties such as antimicrobial, anti-inflammatory, antispasmodic, insecticidal, anti-malaria, etc. Phytochemical investigations of Ballota and Otostegia species have revealed that diterpenoids are the main constituents of the genera. A large number of flavonoids and other metabolites were also identified. This review, covering literature from 1911 up to 2018, includes traditional uses, chemical profiles (both of volatile and nonvolatile metabolites), and biological properties of all the taxa of these 2 genera studied to date.
Single-Step Dual Functionalization: One-Pot Bromination-Cross-Dehydrogenative Esterification of Hydroxy Benzaldehydes with CCl3Br – A Comparison with Selectfluor
Authors: Talukdar Ranadeep
Published: June 2019

Bromination of phenolic compounds without directly using molecular bromine possesses much importance. In this article an IrIII/CCl3Br-assisted single-step double functionalization of hydroxy benzaldehydes is reported. It involves simultaneous esterification of the aldehyde group and bromination of the aryl ring of phenolic aldehydes in one-pot. The reaction proceeds under mild conditions in the presence of 445 nm blue LED light to obtain highly functionalized bromo hydroxy benzoates in moderate to good yields. In comparison, Selectfluor as an oxidant gives only non-bromo phenolic esters.
Synthesis of Triazole-Fused Phenanthridines through Pd-Catalyzed Intramolecular Phenyl C–H Activation of 1,5-Diaryl-1,2,3-triazoles
Authors: Wang Jiazhuang , Yang Jianhua , Fu Xuxin , Qin Guiping , Xiao Tiebo , Jiang Yubo
Published: June 2019

An efficient method for the synthesis of triazole-fused phenanthridines from 1,5-diaryl-1,2,3-triazoles under palladium catalysis has been developed. The reaction proceeds through Pd-catalyzed intramolecular phenyl C–H activation of 1,5-diaryl-1,2,3-triazoles. This method provides a concise and efficient pathway to construct triazolo[1,5-f]phenanthridine derivatives in excellent yields.
SOP Methodik evozierter Potenziale
Authors: Buchner Helmut , Milnik Volker
Published: June 2019

Auf der Grundlage der von der DGKN vorgegebenen Mindeststandards sowie Empfehlungen der IFCN und aktueller Fachliteratur liefert diese SOP konkrete Handlungsanweisungen für die im klinischen Alltag gebräuchlichen Methoden zur Messung evozierter Potenziale: akustisch evozierte Potenziale (AEP), magnetisch evozierte motorische Potenziale (MEP), somatosensorisch evozierte Potenziale (SEP) und visuell evozierte Potenziale (VEP).
Global well-posedness and asymptotic behavior in Besov-Morrey spaces for chemotaxis-Navier-Stokes fluids
Authors: Ferreira Lucas C. F. , Postigo Monisse
Published: June 2019

In this work, we consider the Keller-Segel system coupled with Navier-Stokes equations in RN for N ≥ 2. We prove the global well-posedness with small initial data in Besov-Morrey spaces. Our initial data class extends previous ones found in the literature such as that obtained by Kozono, Miura, and Sugiyama [J. Funct. Anal. 270(5), 1663–1683 (2016)]. It allows us to consider initial cell density and fluid velocity concentrated on smooth curves or at points depending on the spatial dimension. Self-similar solutions are obtained depending on the homogeneity of the initial data and considering the case of a chemical attractant without the degradation rate. Moreover, we analyze the asymptotic stability of solutions at infinity and obtain a class of asymptotically self-similar ones.
Performance analysis of valveless piezoelectric pump with dome composite structures
Authors: He Lipeng , Zhao Da , Li Wei , Xu Quanwen , Cheng Guangming
Published: June 2019

Valveless piezoelectric pumps are used in the field of drug delivery. However, the output performances are limited by severe reflux. This article is aimed at reducing the reflux and improving the output performances. We use different pressure loss coefficients in the forward and reverse directions and design dome composite structures within the chamber of the valveless pump. The structures and working principles are described. Then, we use the fluid simulation software CFX to simulate the flow state inside the chamber under different parameters such as the dome length, 2 mm, 4 mm, 6 mm, and 8 mm; the trapezoidal one-sided angle, 1°, 3°, 5°, 7°, and 9°; and the rounded corner, from 0 to 6 mm. Finally, we also make the prototypes and test the output performances. The results show that the output flow rate can reach a maximum of 220.6 ml/min; the measured variance is 80.7 in the three experiment tests for the optimal flow rate at the dome length of 8 mm, angle of 5°, and rounded corner of 6 mm under the driving voltage of 190 V at a frequency of 45 Hz; the highest output pressure is 670.0 Pa under the voltage of 190 V at a frequency of 130 Hz. Moreover, the precision is 5.85% of the highest tested pressure compared to the simulated pressure. The output flow rate has a great improvement, and the effectiveness of the structures is proved.
Phase separation in binary fluid mixtures with symmetric and asymmetric Schmidt numbers: A DPD study
Authors: Gidituri Harinadha , Akella V. S. , Vedantam Srikanth , Panchagnula Mahesh V.
Published: June 2019

We investigate the effect of the Schmidt number (Sc) on phase separation dynamics of two immiscible fluids in a two-dimensional periodic box using dissipative particle dynamics. The range of Sc investigated spans liquid-liquid separation processes. Phase separation is characterized by a domain size r(t), which typically follows a power law tβ in time t, where β is a characteristic exponent corresponding to the coarsening mechanism at play. The phase separation dynamics is studied for strongly (deep quench) separating mixtures. We consider cases of critical (ϕ ∼ 0.5) and off-critical (ϕ < 0.5) mixtures of fluids A and B for both ScA = ScB and ScA ≠ ScB. In all cases, the growth dynamics slow down with the increasing Schmidt number of either fluid. We observe the power law exponent β = 0.5 for symmetric (ScA = ScB) critical mixtures and β = 0.33 for all other cases. However, for off-critical mixtures, the exponent is 0.33 irrespective of the Schmidt number ratio of the two fluids. We explain these results from an analysis of the competition between diffusive effects vis-á-vis dynamical forces.
Quasi-locality bounds for quantum lattice systems. I. Lieb-Robinson bounds, quasi-local maps, and spectral flow automorphisms
Authors: Nachtergaele Bruno , Sims Robert , Young Amanda
Published: June 2019

Lieb-Robinson bounds show that the speed of propagation of information under the Heisenberg dynamics in a wide class of nonrelativistic quantum lattice systems is essentially bounded. We review works of the past dozen years that has turned this fundamental result into a powerful tool for analyzing quantum lattice systems. We introduce a unified framework for a wide range of applications by studying quasilocality properties of general classes of maps defined on the algebra of local observables of quantum lattice systems. We also consider a number of generalizations that include systems with an infinite-dimensional Hilbert space at each lattice site and Hamiltonians that may involve unbounded on-site contributions. These generalizations require replacing the operator norm topology with the strong operator topology in a number of basic results for the dynamics of quantum lattice systems. The main results in this paper form the basis for a detailed proof of the stability of gapped ground state phases of frustrationfree models satisfying a local topological quantum order condition, which we present in a sequel to this paper.
Charge transfer induced ferromagnetism and anomalous temperature increment of coercivity in ultrathin α-Fe2O3 decorated graphene 2D nanostructures
Authors: Bhattacharya Shatabda , Dinda Diptiman , Kumar E. Mathan , Thapa Ranjit , Saha Shyamal K.
Published: June 2019

To overcome the detrimental effect of charge transfer from a transition metal to 2D substrates like graphene, we have grown ultrathin antiferromagnetic α-Fe2O3 layers on both sides of the graphene surface. Anomalous magnetic behavior, viz., coercivity and exchange bias, increases with increasing temperature with strong ferromagnetic ordering. The highest values of coercivity and large exchange bias are obtained as 3335 Oe and 2361 Oe, respectively. Large enhancement (646%) in exchange bias is observed with an increase in temperature from 2 K to 70 K. Interlayer exchange coupling between the ferromagnetic layers becomes strongest at 300 K to achieve an ultralow coercivity of 22 Oe by growing an α-Fe2O3 phase on both sides of the graphene surface. A 32% negative magnetoresistance is observed as a result of exchange bias which changes with temperature. All these results are explained on the basis of the charge transfer effect at the interface of the graphene/α-Fe2O3 nanostructure at the low temperature region and the spin canting effect of surface states at the higher temperature region. Theoretical Density Functional Theory calculation is also done to understand the interface interaction, quantitative evaluation of charge transfer, and density of states.
Theoretical study of the low-lying electronic states of iron hydride cation
Authors: Cheng Qianyi , DeYonker Nathan J.
Published: June 2019

Both FeH and FeH+ are predicted to be abundant in cool stellar atmospheres and proposed to be molecular components of the gas phase interstellar medium (ISM). However, experimental and simulated data for both species are lacking, which have hindered astronomical detection. There are no published laboratory data for the spectroscopy of FeH+ in any frequency regime. It is also not established if FeH+ possesses salient multireference character, which would pose significant challenges for ab initio modeling of geometric and spectroscopic properties. With a set of high-level coupled cluster and multireference configuration interaction computations, a study of the electronic structure of the ground state and seven excited states of FeH+ was carried out. An X 5Δi electronic ground state of FeH+ is found, in agreement with previous theoretical studies. Including corrections for spin-orbit coupling and anharmonic vibrational effects, the Ω = 3, ν = 0 spin ladder of the A 5Πi electronic state lies 872 cm−1 higher in energy than the Ω = 4, ν = 0 spin ladder of the ground state. Combined with previous work in our laboratory, the ionization energy of FeH is computed to be 7.4851 eV. With modern multireference configuration interaction and coupled cluster methods, spectroscopic constants (re, Be, ωe, ωexe, αe, and D¯e) for several bound excited states (A 5Πi, B 5Σi+, a 3Σr−, b 3Φi, c 3Πi, d 3Δr, and 7Σ+) were characterized. This study will lead efforts to identify FeH+ in the ISM and help solve important remaining questions in quantifying metal-hydride bonding.
Importance of zero-point energy for crystalline ice phases: A comparison of force fields and density functional theory
Authors: Rasti Soroush , Meyer Jörg
Published: June 2019

Density functional theory (DFT) including van der Waals (vdW) interactions and accounting for zero-point energy (ZPE) is believed to provide a good description of crystalline ice phases [B. Pamuk et al., Phys. Rev. Lett. 108, 193003 (2012)]. Given the computational cost of DFT, it is not surprising that extensive phonon calculations, which yield the ZPE, have only been done for a limited amount of ice structures. Computationally convenient force fields on the other hand are the method of choice for large systems and/or dynamical simulations, e.g., of supercooled water. Here, we present a systematic comparison for seven hydrogen-ordered crystalline ice phases (Ih, IX, II, XIII, XIV, XV, and VIII) between many commonly used nonpolarizable force fields and density functionals, including some recently developed meta-GGA functionals and accounting for vdW interactions. Starting from the experimentally determined crystal structures, we perform space-group-constrained structural relaxations. These provide the starting point for highly accurate phonon calculations that yield effectively volume-dependent ZPEs within the quasiharmonic approximation. In particular, when including ZPE, the force fields show a remarkably good performance for equilibrium volumes and cohesive energies superior to many density functionals. A decomposition of the cohesive energies into intramolecular deformation, electrostatic, and vdW contributions quantifies the differences between force fields and DFT. Results for the equilibrium volumes and phase transition pressures for all studied force fields are much more strongly affected by ZPE than all studied density functionals. We track this down to significantly smaller shifts of the O–H-stretch modes and compare with experimental data from Raman spectroscopy.
Unified gas-kinetic wave-particle methods. II. Multiscale simulation on unstructured mesh
Authors: Zhu Yajun , Liu Chang , Zhong Chengwen , Xu Kun
Published: June 2019

In this paper, we present a unified gas-kinetic wave-particle (UGKWP) method on unstructured mesh for the multiscale simulation of continuum and rarefied flow. Inheriting from the multiscale transport in the unified gas-kinetic scheme (UGKS), the integral solution of the kinetic model equation is employed in the construction of the UGKWP method to model the flow physics on the scales of cell size and time step. A novel wave-particle adaptive formulation is introduced in the UGKWP method to describe the flow dynamics in each control volume. The local gas evolution is constructed through the dynamical interaction of the deterministic hydrodynamic wave and the stochastic kinetic particle. To model the gas dynamics on the scales of cell size and time step, the decomposition, interaction, and evolution of the hydrodynamic wave and the kinetic particle depend on the ratio of time step to local collision time. In the rarefied flow regime, the UGKWP method recovers the nonequilibrium flow physics by discrete particles and performs as a stochastic particle method. In the continuum flow regime, the UGKWP method captures the flow behavior solely by macroscopic variable evolution and becomes a gas-kinetic hydrodynamic flow solver, the same as the gas-kinetic scheme, for viscous and heat-conducting Navier–Stokes solutions. In the transition regime, both kinetic particle and hydrodynamic wave contribute adaptively in the UGKWP to capture the peculiar nonequilibrium flow physics in a most efficient way. In different flow regimes, the Sod shock tube, lid-driven cavity flow, laminar boundary layer, and high-speed flow around a circular cylinder are computed to validate the UGKWP method on unstructured mesh. The UGKWP method obtains the same UGKS solutions in all Knudsen regimes. However, with an automatic wave-particle decomposition, the UGKWP method becomes very efficient. For example, at Mach number 30 and Knudsen number 0.1, the UGKWP has several-order-of-magnitude reductions in computational cost and memory requirement in comparison with UGKS. Overall, the UGKWP can capture the gas dynamics in all flow regimes efficiently and accurately from the free molecular transport to the Navier-Stokes flow evolution.
Simple scaling laws for the transport coefficients calculated by density-functional theory molecular dynamics
Authors: Danel J.-F. , Kazandjian L.
Published: June 2019

Density-functional theory molecular dynamics (DFT-MD) is a first-principles approach suited for and widely applied to the calculation of warm dense plasmas properties at equilibrium. It is shown that under the very general hypotheses underlying this approach, the transport coefficients of pure fluids obey simple scaling laws. The extension of these scaling laws to mixtures is possible under specific conditions. Apart from the practical interest of deducing the DFT-MD transport coefficients of an isotope of a given element from those already calculated for another isotope of the same element, these laws are fundamental constraints to be imposed to the construction of fits or of mixing rules for transport coefficients of warm dense plasmas.
Rotational spectrum, internal dynamics, and molecular structure of methylphenylsilane
Authors: Lei Juncheng , Chen Junhua , Yang Zhangyou , Feng Gang , Xia Zhining , Gou Qian
Published: June 2019

The rotational spectra of two isotopologues of methylphenylsilane were measured and assigned by using the supersonic-jet Fourier transform microwave spectroscopic technique in the 2.0–20.5 GHz range. The feature of rotational spectra of methylphenylsilane indicates that the doublets of rotational transitions in methylphenylsilane are contributable to the methyl internal rotation with a V3 barrier of 559 (25) cm−1. No splitting has been observed due to the methyl internal rotation in its carbon analog, ethylbenzene, which indicated that the barrier to such motion should be higher than 700 cm−1. Silicon incorporation of the ethyl group in ethylbenzene leads to a much lower barrier to the methyl internal rotation.
A complete quasiclassical map for the dynamics of interacting fermions
Authors: Levy Amikam , Dou Wenjie , Rabani Eran , Limmer David T.
Published: June 2019

We present a strategy for mapping the dynamics of a fermionic quantum system to a set of classical dynamical variables. The approach is based on imposing the correspondence relation between the commutator and the Poisson bracket, preserving Heisenberg’s equation of motion for one-body operators. In order to accommodate the effect of two-body terms, we further impose quantization on the spin-dependent occupation numbers in the classical equations of motion, with a parameter that is determined self-consistently. Expectation values for observables are taken with respect to an initial quasiclassical distribution that respects the original quantization of the occupation numbers. The proposed classical map becomes complete under the evolution of quadratic Hamiltonians and is extended for all even order observables. We show that the map provides an accurate description of the dynamics for an interacting quantum impurity model in the coulomb blockade regime, at both low and high temperatures. The numerical results are aided by a novel importance sampling scheme that employs a reference system to reduce significantly the sampling effort required to converge the classical calculations.
Simulations of the effects of pre-seeded magnetic islands on the generation of runaway current during disruption on J-TEXT
Authors: Jiang Z. H. , Huang J. , Tong R. H. , Yang T. T. , Lin Z. F. , Izzo V. , Li C. H. , Liang Y. F. , Ye X. , Ding Y. H. , Huang Z. , Zhu L. Z. , Chen Z. Y.
Published: June 2019

Simulations of argon (Ar) massive gas injection (MGI) into J-TEXT plasmas with 2/1 mode magnetic islands (mode penetration) are performed with the 3D magnetohydrodynamic (MHD) code NIMROD. In order to study the effect of the magnetic island phase on the loss of runaway electrons (REs) in disruption, four different phases of the pre-existing 2/1 magnetic island have been implemented. It is found that the RE confinement is drastically affected by the magnetic island phase during the thermal quench (TQ) phase. Simulation results show that the curve of the remaining RE ratio vs relative toroidal phase between the preseeded m/n = 2/1 islands and the MGI valve approximates a sinelike function dependence. The optimized phase difference for runaway suppression is predicted to be toroidal 90° (Δϕ=ϕMGI−ϕn=1). It is verified that the trajectories of low energy REs follow magnetic field lines strictly. A discrepancy in the evolution of the flux surface among different toroidal phases of 2/1 islands has been found, which greatly depends on the magnetic perturbations induced in disruption. A stronger low-order MHD activity might contribute to the accelerated processes of impurity assimilation and the TQ phase in the optimized phase. These simulations suggest that the relative phase between the MGI and 2/1 islands is important for RE suppression in future tokamaks.
Revisions to the chronostratigraphic framework of the Upper Jurassic Walloon Coal Measures of the Surat Basin, Australia
Authors: Wainman Carmine , McCabe Peter
Published: June 2019

The Upper Jurassic Walloon Coal Measures (WCM) in the Surat Basin host the largest coal seam gas (CSG) resource in Australia. Despite this, a poorly defined lithostratigraphic framework hinders the development of reservoir models and groundwater flow simulations. Correlations in the WCM are challenging, owing to the complex arrangement of facies over short distances and the absence of a reliable regional stratigraphic datum. To better correlate the strata, 26 tuff beds were dated using the U–Pb chemical abrasion thermal ionisation mass spectrometry methodology across the Surat Basin CSG fairway. This initially suggested that coal-bearing strata in the basin were diachronous. However, the acquisition of a new date from the Surat Basin has identified a five million year time gap between dated tuffs ~20 m apart. This suggests the presence of an unconformity and that there were two independent episodes of coal accumulation in the basin. Above the unconformity, there are incised valleys with a sedimentary infill that transitions from fluvial- to tidal-influenced facies, as indicated by dinoflagellate cysts and tidal sedimentary structures, including double mud drapes. The cause of the unconformity is likely to be tectonic, as eustatic sea-level was rising during the Kimmeridigian. The marine incursion into the basin is the consequence of a highstand of sea-level during the early Tithonian. The application of the new chronostratigraphic framework should elucidate the evolution of fluviolacustrine systems in the basin and aid in resource prediction. Further dating of tuffs in the basin could refine the stratigraphic framework.
Adavale Basin petroleum plays
Authors: Troup Alison , Talebi Behnam
Published: June 2019

The Devonian Adavale Basin system is an under-explored, frontier petroleum basin in south-west Queensland. It has a confirmed petroleum system with production from the Gilmore gas field. The age, marine depositional environments and high carbonate content suggest the basin may have unconventional petroleum potential, and there has been renewed interest from industry in evaluating the basin. In support of this, the Queensland Department of Natural Resources, Mines and Energy has examined the source rock properties of the Bury Limestone and Log Creek Formation and has commissioned an update to the SEEBASE® interpretation of the region. Gas- to oil-mature source rocks are found in deep marine shales of the Log Creek Formation, with secondary potential in the shelfal Bury Limestone. The main known reservoir within the Adavale Basin is the Lissoy Sandstone, though sandstones found in other units may also have tight reservoir potential. These petroleum systems elements form several plays, including conventional clastic structural targets, carbonate plays, including possible reef targets, and salt plays associated with doming from the Boree Salt. Potential unconventional targets include tight sandstone, shale and limestone, with recent analysis of an organic-rich marl from the Bury Limestone indicating good retention properties. The overlying Cooper, Galilee and Eromanga basins also contain potential reservoirs for hydrocarbons generated in the Adavale Basin and Warrabin Trough.
New deep crustal seismic data acquisition program for NWQ's frontier petroleum basins
Authors: Edwards Sally , Talebi Behnam
Published: June 2019

The Georgina and South Nicholson basins and the Isa Superbasin of North West Queensland (NWQ), represent frontier basins earmarked for examination of resource potential under the Strategic Resources Exploration Program. Little exploration has occurred for petroleum resources in these basins although a proven petroleum system exists in both the Isa Superbasin and the Georgina Basin with demonstrated flow at sub-commercial rates. To increase knowledge of the petroleum system, define the extent of the South Nicholson Basin and examine basin architecture, Geoscience Australia acquired deep (to 20-s listening time) seismic data across the South Nicholson Basin and northern Isa Superbasin area in 2017. However, this survey focused on broader structural architecture definition across the Proterozoic Isa Superbasin and South Nicholson and McArthur basins. Little is understood of the petroleum system in the southern Isa Superbasin, or even if this structure is part of the Isa Superbasin, where Proterozoic gas is inferred from mineral boreholes and oil stained Cambrian-aged carbonates exist. To increase understanding of this southern region, the Queensland Government acquired a new NWQ SEEBASE® (depth to basement) model in 2018, and will be undertaking a 2D deep seismic survey within the Camooweal region to better understand the structural architecture, sediment thicknesses and seismic characteristic of packages of this southern area. The seismic survey is centred on the Georgina Basin and will tie into the South Nicholson survey – extending knowledge further south across major structures featured in the SEEBASE® model.
The prospectivity of the Cape Vogel Basin, Papua New Guinea
Authors: Amiribesheli Said , Weller Andrew
Published: June 2019

The frontier and underexplored Cape Vogel Basin (CVB), north of the Papuan Peninsula, is thought to be underlain by Late Palaeocene–Eocene oceanic crust and overlain by Cenozoic sediments. Several impartial data provide evidence of working petroleum system(s) including a flow of oil from a 1920s well, and two 1970s wells that encountered minor hydrocarbon traces and good source material. The 1970s wells chased Miocene reef plays (like the discoveries in the Gulf of Papua). No Miocene reefs were encountered, with both wells terminating in volcanics. Integration of open-file 2D seismic, modern 2D PSDM seismic and shipborne gravity and magnetic data improves the subsurface imaging and thus understanding of prospectivity. The data reveal a significant sedimentary section (including Mesozoic sediments) and that the volcanics are not laterally continuous (i.e. products of short periods of volcanism). The data also suggests several Mesozoic–Cenozoic plays (e.g. carbonate reefs, incised canyons). Repeatable sea surface slicks, and observable bottom-simulating reflectors and direct hydrocarbon indicators, also provide evidence of working petroleum system(s). It is hypothesised that the CVB has affinities with the Gulf of Papua with the extension of the Australian craton north of the Papuan Peninsula, with widespread deposition in the Mesozoic–Cenozoic, and with source rocks estimated to be within the hydrocarbon generative window. With incorporation of onshore data and presence of significant gravity low, it is postulated that the central and north-west were less susceptible to Late Cretaceous and Palaeocene differential uplift and erosion (related to Coral Sea breakup and extension), and thus have a higher chance of Late Mesozoic preservation.
Ahead of the game: working with local communities in frontier resource basins
Authors: Squire Warwick , Braithwaite Julie-Anne
Published: June 2019

From frontier gas basins in North West Queensland to potential unconventional gas reserves in the far south-west, several areas in Queensland have potential for new or expanded resource activity over the coming decade. Lessons of the past have highlighted the importance of early engagement, by industry and government, in building and maintaining constructive relationships with local communities and achieving successful coexistence. The way in which local communities are introduced to new resource activity, and their first impressions, contribute to future attitudes and expectations. In some cases, the Department of Natural Resources, Mines and Energy (DNRME) is taking a lead on early activities to facilitate resource exploration and development, such as pre-competitive exploration and release of tender areas for potential exploration. DNRME’s approach for engaging with resource communities involves developing robust relationships with local stakeholders, namely local government, landholders, Traditional Owners and local organisations, and a deep understanding of their interests and the local context. Second, it focuses on providing information to local communities about resource activity and ensuring that they have a channel for raising questions and concerns.
Australia's unconventional future: where next?
Authors: Meredith Christopher
Published: June 2019

Eastern Australia is now reliant on coal-seam gas (CSG) for its domestic gas supply; in 2018, it accounted for two-thirds of total eastern coast gas production. Australia has seen a rapid transition from relying on ‘conventional’ resources to relying on ‘unconventional’ gas supply. As legacy conventional supply sources mature and decline, exploration has been insufficient to keep up with market demand. This has created the opportunity for Australia’s vast CSG resources to fill the gap. But the development of CSG has been neither easy nor straightforward. And the costly requirement to drill hundreds, if not thousands, of wells in every single development has driven up the cost of supply. Most CSG reserves will be produced for the Pacific Basin LNG market via the three LNG projects on the east coast of Queensland. However, it is the resources beyond these LNG projects that will need to be developed, so as to ensure future supply to the east coast gas market. It is these other resources, both CSG and shale, that we evaluated to gain a picture of future gas supplies and costs. Our indicative economics showed that alternative CSG resources and Beetaloo shale both have high well-head break-even costs. In addition, the infrastructure required to get them to market will be expensive. The high costs, coupled with the demand from the LNG plants of Gladstone leads us to conclude that eastern-coast gas prices are likely to remain closely linked to global LNG prices for the foreseeable future.
Stratigraphic and structural architecture across the central North West Shelf – implications for Triassic petroleum systems
Authors: Abbott Steve , Orlov Claire , Bernardel George , Nicholson Chris , Rollet Nadege , Nguyen Duy , Gunning Merrie-Ellen
Published: June 2019

The Triassic succession in the Roebuck Basin and parts of the adjacent sub-basins is the subject of a regional mapping program at Geoscience Australia that addresses stratigraphic and structural aspects of exploration risk. Seismic horizons of regional significance are integrated into a new tectonostratigraphic framework that also includes lithostratigrapy, gross depositional facies and tectonic extension phases. The main Triassic depocentre extends over the Beagle Sub-basin and north-east Exmouth Plateau, with a re-entrant into the Bedout Sub-basin. A smaller north-east oriented depocentre is located over the outer Rowley Sub-basin and extends into the Barcoo Sub-basin. The Triassic succession thins markedly between these depocentres over a regional palaeogeographic high. Above a basal marine mudstone, the Triassic succession is mainly fluvio-deltaic, but outboard the uppermost Triassic succession it is carbonate-rich. The Rowley depocentre is unusual in that it comprises Lower–Middle Triassic volcanics and Middle–Upper Triassic carbonate-rich facies. Syn-depositional half graben in the Barcoo Sub-basin extend part-way into the adjacent Roebuck Basin. The Roebuck Basin structural architecture is simpler than the neighbouring sub-basins. The contiguous development of fluvio-deltaic facies across the main Triassic depocentre indicates that the Middle Triassic petroleum system may extend beyond the Bedout Sub-basin. Syn-depositional extension may have formed isolated sub-basins favourable for source rock deposition in the Barcoo Sub-basin. The Triassic carbonate play may also be of interest, as carbonate build-ups are locally well imaged in seismic profiles.
Western Australian marine oil pollution risk assessment: identification of protection priorities
Authors: Morgan Raphael , Gifford Emily , Jacobs Annette , Swain Kate
Published: June 2019

The Western Australian Department of Transport (DoT) is the hazard management agency (HMA) for marine oil pollution in Western Australia (WA). DoT initiated the WA marine oil pollution risk assessment (WAMOPRA), a detailed assessment of oil spill risk in Western Australian State waters. It comprised two components. The first component evaluated protection priorities of the receiving environment to assess potential consequences of marine oil pollution. The second component assessed the likelihood, size, location and type of marine oil pollution. Protection priority outputs from component one were modelled with spill risk from component two, to give an overall risk profile for the State. For management purposes, State waters were divided into seven zones and smaller shoreline cells (~10 km × ~20 km). Geospatial datasets representing the various receptors identified were collated and grouped into the following five categories: Protected fauna; Protection areas; Cultural heritage; Economic; and Social, amenity and recreation. Using a multi-criteria analysis approach, the spatial data layers for each receptor identified were assigned a ranking from one (very low priority) to five (very high priority) for protection. The effects of both floating and dissolved hydrocarbons were ranked. These rankings were then used to produce a map showing very low to very high priorities of the shoreline cells for each category. The outcome of this project is the largest single assessment of protection priorities (~13000 km of coastline), undertaken across a highly variable coastline, using a standard and repeatable approach that can be applied across Australia.
The Australian Government's liquid fuel security review and National Energy Security Assessment
Authors: Wyndham Tim
Published: June 2019

The Australian Government is undertaking a review of Australia’s liquid fuel security to help deliver affordable and reliable energy. The interim report with initial findings was released for public consultation in April 2019. Feedback on the interim report will inform the final report to Government in the second half of 2019. The liquid fuel security review is contributing to a broader consideration of energy security across liquid fuel, electricity and gas supplies in the National Energy Security Assessment in 2019. The National Energy Security Assessment will consider human and environmental threats to our energy markets – electricity, gas and liquid fuels.
'Lawfare' in the oil and gas industry
Authors: McMahon Xavier T. , Williams Jake D.
Published: June 2019

There is a growing concern within the resources industry about activists’ use of the legal system to disrupt and delay major projects. Currently, referred to by many as ‘lawfare’, the tactic is not new. However, recent challenges to high profile cases, such as the Adani Carmichael Coal Project, has brought renewed focus to the tactics being used by activists to further their agendas, and a perception at least that the risk to the industry is ever increasing. This paper looks at trends and novel developments in national and international environmental law, and considers what implications this may have for the development of oil and gas projects in Australia.