Changes in nitrogen and phosphorus flows and losses in agricultural systems of three megacities of China, 1990–2014
Sign Up to like & getrecommendations! Published in 2018 at "Resources, Conservation and Recycling"
DOI: 10.1016/j.resconrec.2018.07.030
Abstract: Abstract Urban expansion is a crucial process altering nutrient cycles in agro-ecosystems, often accompanied by negative impacts on the environment. Quantitative analysis of nutrient flows in agricultural systems of megacities and their interactions with urbanization… read more here.
Keywords: systems three; changes nitrogen; nitrogen phosphorus; 1990 2014 ... See more keywords
Thermodynamic properties and phase diagrams of spin-1 quantum Ising systems with three-spin interactions
Sign Up to like & getrecommendations! Published in 2019 at "Modern Physics Letters B"
DOI: 10.1142/s0217984920500013
Abstract: The spin-1 quantum Ising systems with three-spin interactions on two-dimensional triangular lattices are studied by mean-field method. The thermal variations of order parameters and phase diagrams ... read more here.
Keywords: systems three; spin quantum; spin interactions; ising systems ... See more keywords
Canonical Forms and Their Integrability for Systems of Three 2nd-Order ODEs
Sign Up to like & getrecommendations! Published in 2017 at "Advances in Mathematical Physics"
DOI: 10.1155/2017/2580968
Abstract: Differential invariants and their corresponding canonical forms for systems of three 2nd-order ODEs possessing three-dimensional Lie algebras are constructed. Their extension up to th-order system of three 2nd-order ODEs is presented. Furthermore singularity in invariant… read more here.
Keywords: order; systems three; canonical forms; order odes ... See more keywords