We apply formal measures of emergence, self-organization, homeostasis, autopoiesis and complexity to an aquatic ecosystem; in particular to the physiochemical component of an Arctic lake. These measures are based on information theory. Variables with an homogeneous distribution have higher values of emergence, while variables with a more heterogeneous distribution have a higher self-organizatio...

The coagulation-fragmentation equation describes the concentration fi(t) of particles of size i ∈ N/{0} at time t ≥ 0, in a spatially homogeneous infinite system of particles subjected to coalescence and break-up. We show that when the rate of fragmentation is sufficiently stronger than that of coalescence, (fi(t))i∈N/{0} tends to an unique equilibrium as t tends to infinity. Although we suppos...

The application of a newly developed computational tool, DETCHEM, for the transient twoand threedimensional simulations of catalytic combustion monoliths is presented. The simulation is based on the coupling of a transient 2D / 3D heat balance of the solid monolith structure with steady-state calculations of the reactive flow in a representative number of channels. The two-dimensional single-ch...

Laser capture microdissection of frozen tissue sections allows homogeneous cell populations to be isolated for expression profiling. However, this requires striking a balance between retaining adequate morphology for accurate microdissection and maintaining RNA integrity. Various staining protocols were applied to frozen endometrial carcinoma tissue sections. Although alcohol-based methods were...

Water dimers (H(2)O)(2) are believed to affect Earth's radiation balance and climate, homogeneous condensation, and atmospheric chemistry. Moreover, the pairwise interaction which binds the dimer appears to be of paramount importance for expounding a complete molecular description of the liquid and solid phases of water. However, there have been no secure, direct observations of water dimers at...

In this paper we consider a two-phase flow model in a heterogeneous porous column. The medium consists of many homogeneous layers that are perpendicular to the flow direction and have a periodic structure. Trapping may occur at the interface between a coarse and a fine layer. Assuming that capillary effects caused by the surface tension are in balance with the transport, we apply the homogeniza...

bis(indenyl)zirconium dichloride as a catalyst was synthesized using a modified method at the room temperature. polymerization of ethylene and copolymerization of ethylene and propylene were carried out by this metallocene catalyst. ethylene propylene (p/e) feed ratios of 0.25, 0.5, 1, and 2 were employed into the copolymerization systems. copolymerization conditions like cocatalyst/catalyst ra...

An expansion method based on time fractional Sine-Gordon equation is implemented to construct some real and complex valued exact solutions the Korteweg-de Vries modified equations in forms. Compatible traveling wave transform plays a key role be able apply homogeneous balance technique set predicted solution. The relation between trigonometric hyperbolic functions allows form with multiplicatio...