Results 71 to 80 of about 3,266 (254)
Non-Isothermal Constitutive Relations and Heat Transfer Equations of a Two-Phase Medium
Studia Geotechnica et Mechanica, 2017 In the case of a two-phase medium – such as the soil, which consists of an elastic skeleton and is filled with pore fluids – stress and strain within the medium are dependent on both phases.
Uciechowska-Grakowicz Anna +1 more
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The Role of Iron‐Hyponitrite Intermediates in Biology and Insights From Synthetic Model Complexes
Chemistry – A European Journal, EarlyView.Despite the difference in active site architecture, NO reduction by different NOR enzymes is expected to be linked by a common intermediate: hyponitrite (N2O22−). However, experimentally, very little is known about the coordination chemistry of iron with hyponitrite and the expected Fe‐hyponitrite intermediates.
Michael O. Lengel, Nicolai Lehnert
wiley +1 more source
Modeling Adsorption Kinetics of Magnesium and Phosphate Ions on Goethite by Empirical Equations
مجله آب و خاک, 2017 Introduction: Natural environments, including soils and sediments, are open and complex systems in which physico-chemical reactions are in semi equilibrium state.
Malihe Talebi Atouei +3 more
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Chemistry – A European Journal, EarlyView.Covalent linkage of a highly crystalline PHBV with a ductile P3HB4HB is shown to produce block copolymers with markedly enhanced extensibility and toughness, outperforming equivalent blends. The results demonstrate that polymer architecture, not composition alone, governs mechanical response, offering a route to biodegradable materials that combine ...
Katrin Blandine Kockler +3 more
wiley +1 more source
GeotechnicsPartially frozen soil (PFS) is comprises of coexisting unfrozen water and ice within its pores at subzero temperatures. The review paper examines how unfrozen water content (UWC) and pore ice content interact during phase changes under near-freezing ...
Mohammad Ossama Waseem +3 more
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Frontiers in Chemistry, 2018 Atrazine is one of the most common broad-leaf herbicides used in the world. However, due to extensive use for many years, atrazine often appears in surface and groundwater.
Chad J. Penn +2 more
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Chemie Ingenieur Technik, EarlyView.All energy matters Let us broaden the discussion on solutions to climate change. Greenhouse gases have upset the delicate equilibrium of the Earth's energy balance. Consequently, all sources of heat affect the temperature of the Earth. Although the amount of additional heat generated by humans is a fraction of that produced by the sun, it is generated ...
Martin Bertau +2 more
wiley +1 more source
Thermal Degradation of PFAS in Different Scales: Measurement of Hydrogen Fluoride (HF)
Chemie Ingenieur Technik, EarlyView.The communication article is about the challenges to balance a combustor in the case of fluorine when incinerating PFAS containing materials. Several analytical methods are compared: for continuous measurement, FTIR with TDLS. The detected fluorine species are further compared with results upon IC and pyrohydrolysis for discontinuous measurements in ...
Hans‐Joachim Gehrmann +6 more
wiley +1 more source
Pesquisa Agropecuária Brasileira, 2008 A conceptual framework for crop production efficiency was derived using thermodynamic efficiency concept, in order to generate a tool for performance evaluation of agricultural systems and to quantify the interference of determining factors on this ...
Fábio Ricardo Marin +4 more
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On the use of thermodynamic methods to describe water relations in plants and soil
Australian Journal of Plant Physiology, 2001 Both the existing theory as well as the measurements that have traditionally been used to describe the water relations of plants in thermodynamic terms are not consistent with standard thermodynamic theory. In this article, three main errors are identified: (1) the assumption that the internal energy of a system includes the gravitational potential ...
openaire +1 more source