Dissipation anomaly and energy cascade in 3D incompressible flows

The purpose of this note is to present a mathematical evidence of dissipation anomaly in 3D turbulent flows within a general setting for the study of energy cascade in physical scales of 3D incompressible flows recently introduced by the authors.Comment: accepted to C. R. Math. Acad. Sci. Paris, final versio

Anomalous dissipation and energy cascade in 3D inviscid flows

Adopting the setting for the study of existence and scale locality of the energy cascade in 3D viscous flows in physical space recently introduced by the authors to 3D inviscid flows, it is shown that the anomalous dissipation is -- in the case of decaying turbulence -- indeed capable of triggering the cascade which then continues ad infinitum, confirming Onsager's predictions.Comment: 14 pages, 1 figure, accepted to Comm. Math. Phy

Possibility of applying the multicriteria analysis method when selecting a conveyance system in a lead and zinc mine

High costs of conveyance, as well as the need of taking into account other criteria, impose the application of other modern methods when selecting an optimal conveyance system in mines. This problem is especially obvious in metallic mineral raw material mines. This Paper deals with possibilities of applying the multi-criteria analysis method when selecting an optimal conveyance system in a lead and zinc mine

An arbitrary-function light power controller

We describe the design, applications, and performance of a simple light power controller. The device is built on a fiber-coupled electro-optic modulator with an active electronic feedback. It can be used to actively stabilize laser power or to impress an arbitrary waveform onto the power. The bandwidth of the device is ∼70 kHz

Comment on: Magnetic field measurements in Rb vapor by splitting Hanle resonances under the presence of a perpendicular scanning magnetic field

In a recent article in this journal Grewal and Pattabiraman reported on the splitting of ground state Hanle resonances (recorded with linearly polarized light) by a transverse field. They claimed a “linearly proportional” dependence on the transverse field strength and supported this observation with results from numerical simulations. In this comment we argue that the splitting occurs only beyond a certain threshold field value and that it has a strong non-linearity near threshold. We base this claim on our previously published algebraic expressions for the line shapes and support this by experimental evidence. Graphical abstractOpen image in new windo

THE SCOPE AND STRUCTURE OF THE INCENTIVES IN AGRICULTURE AND RURAL DEVELOPMENT IN THE REPUBLIC OF SERBIA

The aim of the paper is to point out the scope and structure of the incentives from the agricultural budget of the Republic, as well as from the IPA Fund which are intended for the agricultural and rural development sector in Serbia. It is given a brief overview of the chronology of harmonization of national legislation in the field of agricultural production with European rules, the plan for realization of IPARD funds for the period 2014-2020, as well as a review of incentives from the agricultural budget for the period 2016-2019. For supporting the agriculture and rural development sector of Serbia within the IPARD measures, from the EU budget is intended EUR 175 mln., and from the national budget is intended EUR 55 mln. The largest amount of funds within the IPARD measures is planned for investments in the physical assets of agricultural holdings (43%). Something less contribution is scheduled for the investments in processing and marketing in agricultural holdings (37%). The left over measures include only 19% of the planned funds intended to support agricultural holdings within the IPARD assistance program. On the other hand, an analysis of the incentive structure from the Republic's agrarian budget indicates that the largest share has direct payments of over 50%, while the rural development measures are average financed with 12.3%

Influence of coffee blends and roasting process on the antioxidant activity of coffee

The aim of this paper is to develop specification for the production of roasted coffee with improved nutritional quality. In this sense, the influence of different coffee blends and temperatures of roasting on the antioxidant activity of coffee was examined. Also, the composition of some bioactive components in the analyzed samples was determined. Two Arabica coffees of different quality and Robusta coffee were used for preparation of coffee blends. Experimentally determined green coffee blends B1, B2 and B3 were roasted at 167°C, 171°C and 175°C for 25 minutes in order to establish the effect of temperature roasting on the antioxidant activity and the content of bioactive components in blends. Based on results of DPPH and ABTS test, coffee blends B3 and B2, roasted at 171°C, had the highest (P<0.05) antioxidant activity. Those coffee blends had higher content of Robusta coffee than coffee blend B1. Results of this research can provide opportunities for development roasted ground coffee with improved nutritive quality, which could ensure competitiveness of producers in the target market. Keywords: coffee blends, antioxidant activity, nutritive qualit