Polarization-squeezed light formation in a medium with electronic Kerr nonlinearity

We analyze the formation of polarization-squeezed light in a medium with electronic Kerr nonlinearity. Quantum Stokes parameters are considered and the spectra of their quantum fluctuations are investigated. It is established that the frequency at which the suppression of quantum fluctuations is the greatest can be controlled by adjusting the linear phase difference between pulses. We shown that by varying the intensity or the nonlinear phase shift per photon for one pulse, one can effectively control the suppression of quantum fluctuations of the quantum Stokes parameters.Comment: final version, RevTeX, 10 pages, 5 eps figure

The economic and social dimensions of Romania’s metallurgical industry

The purpose of this paper is to enhance the understanding of both the economic and social dimensions belonging to Romania’s metallurgical industry and how they contribute to generating business value. The approach of this subject became of utmost necessity in turbulent times such as the one Romania is facing nowadays

The relation productivity - environment in the context of sustainable development – case study on the Romanian industry

The purpose of this paper is to enhance the understanding of the relation between productivity and environment in the context of sustainable development, with a case study on the Romanian industry. The approach of this subject became of utmost necessity in turbulent times such as the one Romania is facing nowadays. Firstly, it provides a theoretical approach on sustainable development; secondly, it presents sustainable development as a key element in nations’ growth and thirdly, it emphasis the aspects concerning the relation productivity - environment in the context of sustainable development, with a case study on the Romanian industry

The economic and social dimensions of Romania’s metallurgical industry

The purpose of this paper is to enhance the understanding of both the economic and social dimensions belonging to Romania’s metallurgical industry and how they contribute to generating business value. The approach of this subject became of utmost necessity in turbulent times such as the one Romania is facing nowadays

Entanglement consumption of instantaneous nonlocal quantum measurements

Relativistic causality has dramatic consequences on the measurability of nonlocal variables and poses the fundamental question of whether it is physically meaningful to speak about the value of nonlocal variables at a particular time. Recent work has shown that by weakening the role of the measurement in preparing eigenstates of the variable it is in fact possible to measure all nonlocal observables instantaneously by exploiting entanglement. However, for these measurement schemes to succeed with certainty an infinite amount of entanglement must be distributed initially and all this entanglement is necessarily consumed. In this work we sharpen the characterisation of instantaneous nonlocal measurements by explicitly devising schemes in which only a finite amount of the initially distributed entanglement is ever utilised. This enables us to determine an upper bound to the average consumption for the most general cases of nonlocal measurements. This includes the tasks of state verification, where the measurement verifies if the system is in a given state, and verification measurements of a general set of eigenstates of an observable. Despite its finiteness the growth of entanglement consumption is found to display an extremely unfavourable exponential of an exponential scaling with either the number of qubits needed to contain the Schmidt rank of the target state or total number of qubits in the system for an operator measurement. This scaling is seen to be a consequence of the combination of the generic exponential scaling of unitary decompositions combined with the highly recursive structure of our scheme required to overcome the no-signalling constraint of relativistic causality.Comment: 32 pages and 14 figures. Updated to published versio

Scalar and tensorial topological matter coupled to (2+1)-dimensional gravity:A.Classical theory and global charges

We consider the coupling of scalar topological matter to (2+1)-dimensional gravity. The matter fields consist of a 0-form scalar field and a 2-form tensor field. We carry out a canonical analysis of the classical theory, investigating its sectors and solutions. We show that the model admits both BTZ-like black-hole solutions and homogeneous/inhomogeneous FRW cosmological solutions.We also investigate the global charges associated with the model and show that the algebra of charges is the extension of the Kac-Moody algebra for the field-rigid gauge charges, and the Virasoro algebrafor the diffeomorphism charges. Finally, we show that the model can be written as a generalized Chern-Simons theory, opening the perspective for its formulation as a generalized higher gauge theory.Comment: 40 page

USING FULL FAT SOYBEAN IN BROILER DIETS AND ITS EFFECT ON THE PRODUCTION AND ECONOMIC EFFICIENCY OF FATTENING

This study aimed to test new diet formulae based on full fat soybean destined to Arbor Acres broilers fattening. A sample of 520 chickens, divided into two groups was used: M-Group, fed with a diet containing maize, soybean meal, oil and fish meal and FFS Group, fed with another diet mainly containing full fat soybean and other components. The diets have been elaborated in three alternatives for each fattening stage: starter, grower and finisher. During the fattening, the main parameters have been recorded and compared between the two groups: daily and total live weight gain, daily and total food consumption, as well as feeding and fattening costs. A number of 8 fattened chickens were slaughtered and we also determined slaughter output, the components of carcass, the chemical composition of chicken meat and the ratio between saturated and unsaturated fatty acids. The FFS plot recorded higher fattening performances, that is a higher daily and total gain, a lower food consumption, but also lower feeding and total costs in comparison with the other group. We have noticed that FFS diet assured an increased crude protein percentage inside chicken meat and a more convenient ratio between the fatty acids, in favour of the unsaturated ones, resulting to a high meat and fat quality

USING FULL FAT SOYBEAN IN BROILER DIETS AND ITS EFFECT ON THE PRODUCTION AND ECONOMIC EFFICIENCY OF FATTENING

This study aimed to test new diet formulae based on full fat soybean destined to Arbor Acres broilers fattening. A sample of 520 chickens, divided into two groups was used: M-Group, fed with a diet containing maize, soybean meal, oil and fish meal and FFS Group, fed with another diet mainly containing full fat soybean and other components. The diets have been elaborated in three alternatives for each fattening stage: starter, grower and finisher. During the fattening, the main parameters have been recorded and compared between the two groups: daily and total live weight gain, daily and total food consumption, as well as feeding and fattening costs. A number of 8 fattened chickens were slaughtered and we also determined slaughter output, the components of carcass, the chemical composition of chicken meat and the ratio between saturated and unsaturated fatty acids. The FFS plot recorded higher fattening performances, that is a higher daily and total gain, a lower food consumption, but also lower feeding and total costs in comparison with the other group. We have noticed that FFS diet assured an increased crude protein percentage inside chicken meat and a more convenient ratio between the fatty acids, in favour of the unsaturated ones, resulting to a high meat and fat quality