Results 11 to 20 of about 700,619 (290)

Structures, enthalpies of formation, and ionization energies for the parent and binary mixed carbon, silicon, nitrogen, and phosphorus cubane derivatives: A G4MP2 theoretical study [PDF]

open access: yes, 2010
Gas phase standard state (298.15 K, 1 atm) structures, enthalpies of formation, and ionization energies (IEs) were calculated at the G4MP2 composite method level of theory for the parent and binary mixed carbon, silicon, nitrogen, and phosphorus cubane ...
Kaya Forest, Sierra Rayne
core   +2 more sources

High-order blended compact difference schemes for the 3D elliptic partial differential equation with mixed derivatives and variable coefficients

open access: yesAdvances in Difference Equations, 2020
Blended compact difference (BCD) schemes with fourth- and sixth-order accuracy are proposed for approximating the three-dimensional (3D) variable coefficients elliptic partial differential equation (PDE) with mixed derivatives.
Tingfu Ma, Yongbin Ge
doaj   +1 more source

Bounds and algorithms for the K-Bessel function of imaginary order [PDF]

open access: yes, 2013
Using the paths of steepest descent, we prove precise bounds with numerical implied constants for the modified Bessel function${K}_{ir} (x)$of imaginary order and its first two derivatives with respect to the order.
Booker, Andrew R   +2 more
core   +2 more sources

Background independent action for double field theory [PDF]

open access: yes, 2010
Double field theory describes a massless subsector of closed string theory with both momentum and winding excitations. The gauge algebra is governed by the Courant bracket in certain subsectors of this double field theory.
A Giveon   +36 more
core   +2 more sources

Couplings between generalized gauge fields [PDF]

open access: yes, 1998
We analyze the BRST field-antifield construction for generalized gauge fields consisting of massless mixed representations of the Lorentz Group and we calculate all the strictly gauge invariant interactions between them. All these interactions are higher
Aulakh   +6 more
core   +2 more sources

On the solvability of the duo-periodic problem for the hyperbolic equation system with a mixed derivative

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2019
One of the main and most studied problems in the theory of second order hyperbolic equations is a periodic boundary value problem. To solve such problems apply Fourier method, method of successive approximations, methods of functional analysis ...
N.T. Orumbayeva, A.B. Keldibekova
doaj   +1 more source

Novel Cationic Prodrug of Ubiquinol-10 Enhances Intestinal Absorption via Efficient Formation of Nanosized Mixed-Micelles with Bile Acid Anions

open access: yesMolecules, 2020
The aim of this study was to develop a prodrug of ubiquinol-10 (UqH-10), the active form of ubiquinone-10 (Uq-10), for oral delivery. Bioavailability of UqH-10 is hampered by its high susceptibility to oxidation and water-insolubility.
Shuichi Setoguchi   +7 more
doaj   +1 more source

Monotone and conservative difference schemes for elliptic equations with mixed derivatives

open access: yesMathematical Modelling and Analysis, 2004
In the paper elliptic equations with alternating‐sign coefficients at mixed derivatives are considered. For such equations new difference schemes of the second order of approximation are developed. The proposed schemes are conservative and monotone.
I.V. Rybak
doaj   +1 more source

Derivation of a general mixed interpolation formula

open access: yesJournal of Computational and Applied Mathematics, 1996
The author shows that given any function \(f(x)\), \(x > 0\), there exists a unique \(g(x) = au(kx) + bv(kx) + C_0 + C_1x + \dots + C_{n-2} x^{n-2}\) that interpolates \(f\) at the points \(jh\), \(h > 0\), \(j = 0\), \(1,\dots, n\), where \(u\) and \(v\) are the two linearly independent solutions of a suitable second-order ordinary differential ...
Chakrabarti, A, Hamsapriye, *
openaire   +2 more sources

Arbitrary p-form Galileons [PDF]

open access: yes, 2010
We show that scalar, 0-form, Galileon actions --models whose field equations contain only second derivatives-- can be generalized to arbitrary even p-forms. More generally, they need not even depend on a single form, but may involve mixed p combinations,
Deffayet, C.   +2 more
core   +4 more sources

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