Results 51 to 60 of about 3,336,558 (167)

Exponential growth of positive initial energy for a system of higher-order viscoelastic wave equations with variable exponents

Journal of Inequalities and Applications
This work addresses a value problem concerning a system of high-order nonlinear equations with viscoelastic terms acting in both equations and homogeneous Dirichlet conditions.
Amar Ouaoua, Wissem Boughamsa, Salah Boulaaras   +2 more
doaj   +1 more source

Dissolution of Diamond in Water–Chloride Fluids at Mantle P-T Conditions

Minerals
Syngenetic fluid inclusions in natural diamonds are indicators of the composition of fluids responsible for growth and crystallization conditions. The chloride concentration in saline fluid inclusions of natural diamonds reaches 50 wt%. We study the dissolution of diamonds in the H2O-KCl-NaCl system at temperatures of 1200 °C and 1400 °C and a pressure
Alexander Khokhryakov, Alexey Kruk, Alexander Sokol, Denis Nechaev   +3 more
openaire   +1 more source

Nonlinear initial-value problems with positive global solutions

Electronic Journal of Differential Equations, 2003
We give conditions on $m(t)$, $p(t)$, and $f(t,y,z)$ so that the nonlinear initial-value problem {gather*} frac{1}{m(t)} (p(t)y')' + f(t,y,p(t)y') = 0,quadmbox{for }t>0, y(0)=0,quad lim_{t o 0^+} p(t)y'(t) = B, end{gather*} has at least one positive ...
John V. Baxley, Cynthia G. Enloe
doaj  

Solvability of a (p, n-p)-type multi-point boundary-value problem for higher-order differential equations

Electronic Journal of Differential Equations, 2003
In this article, we study the differential equation $$ (-1)^{n-p} x^{(n)}(t)=f(t,x(t),x'(t),dots,x^{(n-1)}(t)), $$ subject to the multi-point boundary conditions $$displaylines{ x^{(i)}(0)=0 quad hbox{for }i=0,1,dots,p-1,cr x^{(i)}(1)=0 quad hbox{for }i ...
Yuji Liu, Weigao Ge
doaj  

Phase transition of zircon at high P-T conditions

Phase transition of zircon at high P-T conditions
In situ observations of the zircon-reidite transition in ZrSiO4 were carried out using a multianvil high-pressure apparatus and synchrotron radiation. The phase boundary between zircon and reidite was determined to be P (GPa) = 8.5 + 0.0017×(T-1200) (K) for temperatures between 1100-1900 K.
openaire  

Blow up of solutions for viscoelastic wave equations of Kirchhoff type with arbitrary positive initial energy

Electronic Journal of Differential Equations, 2017
In this article we consider the nonlinear Viscoelastic wave equations of Kirchhoff type $$\displaylines{ u_{tt}-M( \| \nabla u\| ^2) \Delta u+\int_0^{t}g_1( t-\tau )\Delta u( \tau ) d\tau +u_t =( p+1)| v| ^{q+1}| u| ^{p-1}u, \cr v_{tt}-M( \| \nabla
Erhan Piskin, Ayse Fidan
doaj  

Determination of the P-T conditions and depths of magma storage zones for two distinct quaternary lava flows in the Southeast of Mount Ağrı (Eastern Anatolia, Turkey). [PDF]

PLoS One
Dogan-Kulahci GD.
europepmc   +1 more source

Ca₃[C₂O₅]₂[CO₃] is a pyrocarbonate which can be formed at p, T-conditions prevalent in the Earth's transition zone. [PDF]

Commun Chem
Spahr D, Bayarjargal L, Bykov M, Brüning L, Jurzick PL, Wang Y, Milman V, Refson K, Mezouar M, Winkler B.   +9 more
europepmc   +1 more source

Human serum influences functional plasticity and transcriptomic landscape of γδ T cells <i>in vitro</i>. [PDF]

Front Immunol
Pinot L, Zhumadilova Z, Saßor A, Sagar, Villacorta Hidalgo J.   +4 more
europepmc   +1 more source

Interactive effects of arbuscular mycorrhizal fungi and organic amendments on maize growth under salinity stress. [PDF]

Front Plant Sci
Alotaibi KD.
europepmc   +1 more source