Results 81 to 90 of about 35,118 (269)

Solubility of Benzo[a]pyrene and Organic Matter of Soil in Subcritical Water

open access: yesCroatica Chemica Acta, 2015
A dynamic subcritical water extraction method of benzo[a]pyrene from soils is under consideration. The optimum conditions for benzo[a]pyrene extraction from soil are described including the soil treatment by subcritical water at 250 °C and 100 atm for 30
Svetlana Sushkova   +9 more
doaj   +1 more source

The Kibble–Zurek mechanism in a subcritical bifurcation [PDF]

open access: yesJournal of Physics: Condensed Matter, 2013
We present a study of the freezing dynamics of topological defects in a subcritical system by testing the Kibble-Zurek (KZ) mechanism while crossing a tri-stable region in a one-dimensional quintic complex Ginzburg-Landau equation. The critical exponents of the KZ mechanism and the horizon (KZ-scaling regime) are predicted from the quasistatic study ...
Miranda, M. A.   +2 more
openaire   +6 more sources

Environmental Dependence of Subcritical Crack Growth in Marble [PDF]

open access: yes, 2016
It is important to investigate time-dependent deformation and fracturing in rock for the purpose of ensuring the long-term stability of structures in a rock mass. Subcritical crack growth is one of the main causes of time-dependent fracturing in rock. It
石田, 毅   +3 more
core   +1 more source

Synthesis and characterization of polymer networks obtained by conventional radical and RAFT copolymerization processes in supercritical carbon dioxide

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Conventional and RAFT dispersion copolymerizations of HEMA and EGDMA in supercritical CO2 are compared in terms of swelling index (crosslink density), morphology, particle size distribution, and modular differential scanning calorimetry. Abstract The syntheses of net‐poly((2‐hydroxyethylene methacrylate)‐co‐(ethylene glycol dimethacrylate ...
Patricia Pérez‐Salinas   +6 more
wiley   +1 more source

Subcriticality Measurements

open access: yes
AbstractThe index of subcriticality is used to quantify the degree of “how deep a target system has a margin below the critical state.” There are three main categories of subcriticality measurement techniques: the static method, the kinetic method, and the reactor noise analysis method. This chapter is dedicated to explaining the following methods that
Cheol Ho Pyeon   +3 more
openaire   +1 more source

Biharmonic equations with improved subcritical polynomial growth and subcritical exponential growth [PDF]

open access: yesBoundary Value Problems, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Pei, Ruichang, Zhang, Jihui
openaire   +1 more source

A rock brittleness index based on the postpeak energy release rate and damage surface characteristics for brittle hard rock

open access: yesDeep Underground Science and Engineering, EarlyView.
This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang   +5 more
wiley   +1 more source

Modelling of two-zone accelerator-driven systems [PDF]

open access: yesЯдерна фізика та енергетика, 2012
Neutron-physical modelings of two-zone subcritical reactor driven by high-intensity neutron generator are considered. The cascade principle in subcritical reactors, the use of which can hypothetically substantially amplify the neutron flux from the ...
V. A. Babenko   +2 more
doaj  

Subcritical Butane and Propane Extraction of Oil from Rice Bran

open access: yesBioResources, 2015
Rice bran oil was extracted using hexane, as well as subcritical butane and propane. The quality of rice bran oils obtained using these three solvents was comparatively studied.
Hua-Min Liu   +4 more
doaj   +1 more source

Subcritical Water Processing of Proteins: An Alternative to Enzymatic Digestion? [PDF]

open access: yes, 2016
Subcritical water is an emerging tool in the processing of bioorganic waste. Subcritical water is an environmentally benign solvent which has the potential to provide an alternative to traditional methods of protein hydrolysis without the inclusion of ...
Thomas Powell (297146)   +6 more
core   +1 more source

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