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
Alternatives for Connecting Photovoltaic Generators to Power Systems with Three-Port and Partial Power Converters
Sign Up to like & getrecommendations! Published in 2024 at "Applied Sciences"
DOI: 10.3390/app142411880
Abstract: Solar electricity has become one of the most important renewable power sources due to rapid developments in the manufacturing of photovoltaic (PV) cells and power electronic techniques as well as the consciousness of environmental protection.… read more here.
Keywords: partial power; port partial; power conversion; three port ... See more keywords