Results 11 to 20 of about 1,731,917 (295)
Elemental composition of moss and lichen species in eastern Serbia [PDF]
Nuclear Technology and Radiation Protection, 2018 Instrumental neutron activation analysis is used to determine a content of 47 elements (Na, Mg, Al, Cl, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Ni, Co, Cu, Zn, As, Se, Br, Rb, Sr, Zr, Mo, Ag, Cd, Sb, I, Ba, Cs, La, Ce, Nd, Sm, Eu, Gd, Tb, Dy, Tm, Yb, Lu ...
Ajtić Jelena V. +5 more
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Mathematics, 2022 The mathematical modeling of the activation energy and binary chemical reaction system with six distinct types of nanoparticles, along with the magnetohydrodynamic effect, is studied in this paper. Different types of hybrid nanofluids flowing over porous
Qadeer Raza +6 more
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Post-harvesting of Solanum paniculatum L. leaves. Part I: Drying kinetics [PDF]
Revista Brasileira de Engenharia Agrícola e Ambiental, 2020 Solanum paniculatum L. (jurubeba) is among the numerous medicinal plants used by the Brazilian population, and the use of its leaves is quite popular, in the form of tea, as a remedy against hangovers after excessive consumption of alcohol and food ...
Elton A. S. Martins +5 more
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Thermal effect and kinetic analysis of secondary spontaneous combustion of pre-oxidized coal
Meikuang Anquan, 2022 In order to study the secondary spontaneous combustion of coal treated with different pre-oxidation temperatures, pre-oxidized coals with different temperatures were prepared by temperature programmed device.
ZHANG Wenhao, YU Tao
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Acta Chimica Slovenica, 2022 A new pyrazole derived methacrylate monomer, 1,3-diphenyl-1H-pyrazol-5-yl methacrylate, was synthesized from the reaction of 1,3-diphenyl-5-pyrazolone with methacryloyl chloride in the presence of triethylamine.
Adnan Kurt, Murat Koca
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Activation Energies and Beyond [PDF]
The Journal of Physical Chemistry A, 2019 Recent advances in the calculation and interpretation of the activation energy for a dynamical process are described. Specifically, new approaches that apply the fluctuation theory of statistical mechanics to dynamics enable the direct determination of the activation energy for an arbitrary dynamical time scale from simulations at a single temperature.
Zeke A. Piskulich +2 more
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From free-energy profiles to activation free energies
The Journal of Chemical Physics, 2022 Given a chemical reaction going from reactant (R) to the product (P) on a potential energy surface (PES) and a collective variable (CV) discriminating between R and P, we define the free-energy profile (FEP) as the logarithm of the marginal Boltzmann distribution of the CV. This FEP is not a true free energy. Nevertheless, it is common to treat the FEP
Johannes C. B. Dietschreit +4 more
openaire +3 more sources
A phase transition in a system driven by coloured noise [PDF]
, 2003 For a system driven by coloured noise, we investigate the activation energy of escape, and the dynamics during the escape. We have performed analogue experiments to measure the change in activation energy as the power spectrum of the noise varies.
Arrayas, M. +4 more
core +2 more sources
Ecosphere, 2020 The majority of terrestrial net primary production decomposes, fueling detrital food webs and converting dead plant carbon to atmospheric CO2. There is considerable interest in determining the sensitivity of this process to climate warming.
Nathan J. Tomczyk +5 more
doaj +1 more source
Analytic Expression for Magnetic Activation Energy [PDF]
, 2019 We theoretically investigate the magnetic activation energy of permanent magnets. Practically, it is widely used in a phenomenological form as $\mathcal{F}_\mathrm{B}(H_\mathrm{ext})=\mathcal{F}_\mathrm{B}^0\left(1-H_\mathrm{ext}/H_0\right)^n,$ where ...
Miura, Daisuke, Sakuma, Akimasa
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