Natural stabilization of the Higgs boson’s mass and alignment

Most rivers and streams in Europe have been regulated in the past. By this way the most biologically active parts of the landscape and ecological system, the habitat pattern and the species diversity fell victim to regulatory measures. Natural river design or engineering means giving an optimum consideration to natural conditions in order to conserve, improve or restore the ecological quality of river systems and its flood- plains. The fundamental features of ecological improvement and restoration are discussed especially the ecological unit, variety of biotopesapproved to natural dynamics of the river system, individuality and continuity. Of great importance are detailed ecological inventory and great variation in channel plan, cross section and slope. The experiences with natural stabilization measures and the importance of vegetation as a regular element in river design are shown. The planing procedures in Bavaria and the ecological and landscape issues are discussed. It has been shown that all available interests and knowledge must be integrated in the best way in an early stage of planning process. The success of natural river engineering works depends on a well balanced solution of all interests, specially trained personnel and enough space for natural variation of river.

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CSS beer employes natural stabilization material to optimize process

Filtration + Separation ◽

10.1016/s0015-1882(18)30240-4 ◽

2018 ◽

Vol 55 (3) ◽

pp. 8

Keyword(s):

Natural Stabilization

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Enhanced Natural Stabilization of MSW Bottom Ash: a Method for Minimization of Leaching

Studies in Environmental Science - Environmental Aspects of Construction with Waste Materials, Proceeding of the International Conference on Environmental Implications of Construction Materials and Technology Developments ◽

10.1016/s0166-1116(08)71460-2 ◽

1994 ◽

pp. 233-238 ◽

Cited By ~ 2

Author(s):

J.J. Steketee ◽

L.G.C.M. Urlings

Keyword(s):

Bottom Ash ◽

Natural Stabilization

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DESIGN OF A NONLINEAR SITR FRACTAL MODEL BASED ON THE DYNAMICS OF A NOVEL CORONAVIRUS (COVID-19)

Fractals ◽

10.1142/s0218348x20400265 ◽

2020 ◽

Vol 28 (08) ◽

pp. 2040026 ◽

Cited By ~ 5

Author(s):

YOLANDA GUERRERO SÁNCHEZ ◽

ZULQURNAIN SABIR ◽

JUAN L. G. GUIRAO

Keyword(s):

Mathematical Model ◽

Fractal Model ◽

Contact Rate ◽

The Novel ◽

Nonlinear Mathematical Model ◽

Huge Number ◽

Social Distancing ◽

Natural Stabilization ◽

Novel Coronavirus ◽

The Mathematical Model

The aim of the present paper is to state a simplified nonlinear mathematical model to describe the dynamics of the novel coronavirus (COVID-19). The design of the mathematical model is described in terms of four categories susceptible ([Formula: see text], infected ([Formula: see text], treatment ([Formula: see text] and recovered ([Formula: see text], i.e. SITR model with fractals parameters. These days there are big controversy on if is needed to apply confinement measure to the population of the word or if the infection must develop a natural stabilization sharing with it our normal life (like USA or Brazil administrations claim). The aim of our study is to present different scenarios where we draw the evolution of the model in four different cases depending on the contact rate between people. We show that if no confinement rules are applied the stabilization of the infection arrives around 300 days affecting a huge number of population. On the contrary with a contact rate small, due to confinement and social distancing rules, the stabilization of the infection is reached earlier.

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Stabilization method for the Saint-Venant equations by boundary control

Transactions of the Institute of Measurement and Control ◽

10.1177/0142331220950033 ◽

2020 ◽

Vol 42 (16) ◽

pp. 3290-3302

Author(s):

Hassen Arfaoui

Keyword(s):

Finite Difference ◽

Finite Number ◽

Numerical Experiments ◽

Stable Solution ◽

Stabilization Method ◽

Extension Method ◽

Finite Difference Equations ◽

Natural Stabilization ◽

Saint Venant Equations ◽

Exponentially Stable

In this paper, we are interested in the stabilization of the flow modeled by the Saint-Venant equations. We have solved two problems in this study. The first, we have proved that the operator associated to the Saint-Venant system has a finite number of unstable eigenvalues. Consequently, the system is not exponentially stable on the space [Formula: see text], but is exponentially stable on a subspace of the space [Formula: see text], ([Formula: see text] is a given domain). The second problem, if the advection is dominant, the natural stabilization is very slow. To solve these problems, we have used an extension method due to Russel (1974) and Fursikov (2002). Thanks to this method, we have determined a boundary Dirichlet control able to accelerate the stabilization of the flow. Also, the boundary Dirichlet control is able to kill all the unstable eigenvalues to get an exponentially stable solution on the space [Formula: see text]. Then, we extend this method to the finite difference equations analog of the continuous Saint-Venant equations. Also, in this case, we obtained similar results of stabilization. A finite difference scheme is used to compute the control and several numerical experiments are performed to illustrate the efficiency of the control.

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