Results 61 to 70 of about 18,895 (218)
A Finite Element Study of the Bending Behavior of Beams Resting on Two-Parameter Elastic Foundation
Bulletin of the Polytechnic Institute of Jassy: Constructions, Architechture Section, 2006 Although the Winkler’s model is a poor representation of the many practical subgrade or subbase materials, it is widely used in soil-structure problems for almost one and a half century.
Iancu-Bogdan Teodoru +2 more
doaj
Trudy Odesskogo Politehničeskogo Universiteta, 2017 A free vibration of Euler-Bernoulli and Timoshenko beams resting on a two-parameter elastic foundation of Pasternak type has been investigated. Rayleigh-Ritz method is employed to deduce the governing equation and the Legendre polynomials multiplied by a
Rahbar-Ranji Ahmad , Shahbaztabar A.
doaj +1 more source
Synchrotron Mössbauer spectroscopic study of ferropericlase at high pressures and temperatures [PDF]
, 2009 The electronic spin state of Fe^(2+) in ferropericlase, (Mg_(0.75)Fe_(0.25))O, transitions from a high-spin (spin unpaired) to low-spin (spin paired) state within the Earth’s mid-lower mantle region.
Gavriliuk, Alexander. G. +6 more
core
Magnetic Collapse and the Behavior of Transition Metal Oxides at High Pressure
, 2016 We report a detail theoretical study of the electronic structure and phase stability of transition metal oxides MnO, FeO, CoO, and NiO in their paramagnetic cubic B1 structure by employing dynamical mean-field theory of correlated electrons combined with
Abrikosov, I. A. +3 more
core +2 more sources
Linking Superoxide Production and Scavenging in Plant Development
Plant, Cell &Environment, EarlyView.ABSTRACT Due to their strong oxidizing potential, rapid membrane permeability, and high reactivity, reactive oxygen species (ROS) play essential roles in plant development and stress responses. Superoxide (O2•‐) is a primary product of molecular oxygen reduction and a crucial source of hydrogen peroxide, representing a ROS species of substantial ...
Jan Řehák +3 more
wiley +1 more source
MODES OF VIBRATION OF THE BEAMS UNDER THE INFLUENCE OF DISCONTINUITY IN FOUNDATION
Facta Universitatis. Series: Mechanical Engineering, 2014 Vibrations of the Timoshenko beams resting on the Winkler and Pasternak elastic foundation with discontinuity are investigated in this paper. A p-version finite element method that accounts for shear deformation is used.
Vladimir Stojanović, Pedro Ribeiro
doaj
Creative Downtown: The Role of Culture in Rebuilding Lower Manhattan [PDF]
, 2003 Examines how NYC arts groups and artists below Canal Street were affected by September 11, and possible actions the city, state, and private sector could take on behalf of arts and culture in rebuilding and revitalizing the downtown ...
Liz Thompson, Norma Munn
core
, 2012 We report high-pressure low-temperature Raman studies of the Verwey transition in pure and Al-doped magnetite (Fe_3O_4). The low temperature phase of magnetite displays a number of additional Raman modes that serve as transition markers. These transition
A. Gavriliuk +8 more
core +1 more source
Iron homeostasis in the annual and perennial stem zones of Arabis alpina
Plant Biology, EarlyView.Iron accumulates in secondary growth tissues in the perennial stem zone and is correlated with particular gene expression patterns in the perennial model plant Arabis alpina. Abstract Plants store nutrients, including the micronutrient iron, in bioavailable forms to support growth in subsequent seasons. The perennial lifestyle is preponderant in nature.
A. Sergeeva, H.‐J. Mai, P. Bauer
wiley +1 more source
High pressure evolution of Fe$_{2}$O$_{3}$ electronic structure revealed by X-ray absorption
, 2010 We report the first high pressure measurement of the Fe K-edge in hematite (Fe$_2$O$_3$) by X-ray absorption spectroscopy in partial fluorescence yield geometry.
Adam P. Sorini +14 more
core +1 more source