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E-BN crystallization under thermodynamic instability (p,T) conditions
Diamond and Related Materials, 1992Abstract The effect of electrons and photons upon the formation of the E-BN phase under conditions of its thermodynamic instability was examined. It has been found that, when enhanced with the electrons emitted from an electrode tip maintained at an appropriately high electric potential (V>4kV), the reaction of chemical synthesis carried out in a ...
A. Sokołowska, A. Olszyna
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Homoclinic Solutions for p(t)-Laplacian–Hamiltonian Systems Without Coercive Conditions
Mediterranean Journal of Mathematics, 2015The authors are concerned with the existence and multiplicity of homoclinic solutions for the following second-order \(p(t)\)-Laplacian Hamiltonian system \[ \frac{d}{dt}\Big(\left|\dot{u}(t)\right|^{p(t)-2}\dot{u}(t)\Big)-a(t)\left|u(t)\right|^{p(t)-2}u(t)+\nabla W(t,u(t))=0, \eqno(1) \] where \(t\in\mathbb{R}\), \(u\in\mathbb{R}^{n}\), \(p\in C ...
Zhang, Ziheng, Xiang, Tian, Yuan, Rong
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Unravelling pre-eruptive P-T conditions by machine learning
2020<p>Clinopyroxene based thermometers and barometers are widely used tools for estimating temperature and pressure conditions under which magmas are stored before eruptions.</p><p>Several studies reported the development and the application of Clinopyroxene&#8211;liquid geothermobarometers in ...
Maurizio Petrelli +2 more
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New constraints on megathrust slip stability under subduction zone P – T conditions
Earth and Planetary Science Letters, 2012Abstract To understand and model subduction zone seismogenesis, data are needed on the frictional properties of (meta)pelitic subduction zone materials under in situ megathrust conditions. Here, we report the results of rotary shear friction experiments on simulated illite–quartz fault gouge at an effective normal stress of 170 MPa, a pore fluid ...
den Hartog, S.A.M. +2 more
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Crystal chemistry of aegirine as an indicator of P-T conditions
Mineralogical Magazine, 2007AbstractOne metamorphic and four magmatic aegirines, together with two end-member aegirines synthesized at atmospheric pressure and different temperatures, were investigated by single-crystal X-ray diffraction. The limited compositional differences allow the polyhedral volumes to be almost constant in all the aegirines investigated( VM1 ≈ 11.0 Å3; VM2 ≈
SECCO, LUCIANO +4 more
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Madras Granulites: Geochemistry and P-T Conditions of Crystallisation
1978Abstract A study of the major and trace element geochemistry of Madras granulites has been made using 64 representative samples from the Pallavaram area. They can be divided into four geochemically distinct rock groups: meta-igneous pyroxene granulites, metagabbros and charnockites, and metasedimentary khondalites.
B.L. Weaver +4 more
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Metal-Hydrogen System Under Extended p, T Conditions
1993The preceding chapters have dealt with the properties of hydrogen in metals or metal hydrides under ordinary conditions of p, T. In this chapter, we try to extend the range of our discussion and treat binary M-H systems over the entire composition range, including elemental hydrogen, over much wider ranges of p, T.
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ON SURFACE PROPERTIES OF TANTALUM UNDER DIFFERENT P-T-N-CONDITIONS
TOPICAL PROBLEMS OF DEVELOPMENT RENEWABLE ENERGY, 2020Исходя из параметров парного межатомного потенциала Ми–Леннард-Джонса, разработан метод расчета удельной поверхностной энергии (), изохорной и изобарной производных по температуре, и изотермической производной по давлению. Метод применим как для макро-, так и для нано-кристалла с данным числом атомов и с определенной формой поверхности.
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