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Search Results: 1 - 10 of 335589 matches for " András Sinkovicz "
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Successful Tacrolimus Therapy Extended by Everolimus in Retroperitoneal Angiomyolipoma after Lung Transplantation: A Case Report  [PDF]
Tamás Erdélyi, Anikó Bohács, Krisztina Vincze, Zsuzsanna Kováts, Veronika Sárosi, András Sinkovicz, Gy?rgy Balázs, Veronika Müller
Case Reports in Clinical Medicine (CRCM) , 2014, DOI: 10.4236/crcm.2014.312135
Abstract: Lymphangioleiomyomatosis (LAM) is a rare disease that affects women, especially in child-bearing age. Clinical manifestations include angiomyolipoma, pneumothorax, chylothorax, cystic changes of lungs and progressive pulmonary failure. In this article, we report a case of lung transplantation (LuTX) for end stage pulmonary LAM and the treatment of angiomyolipoma showing growth after LuTX resulting in complete remission with combination therapy of everolimus and tacrolimus.
The Higher Education System in Argentina. Networks, Genealogies and Conflicts  [PDF]
Santos Sharpe Andrés
Creative Education (CE) , 2015, DOI: 10.4236/ce.2015.618200
Abstract: The present manuscript aims to identify the genealogies, understood in a Foucaultian perspective, which leads to the actual Higher Education System in Argentina, by distinguishing how series of events are organized, distributed, organized in terms of institutional relations, signifying chains in the social amalgam and educational networks. This analysis will allow understanding the hierarchical relationships between higher education institutions and how the differences on cultural and curricular traditions and history also motivate (though not impose) the differences on the students and on policies. Finally, it is as well an accurate description of the Higher Education System in Argentina with a strong emphasis on universities.
Order by disorder in a four flavor Mott-insulator on the fcc lattice
P. Sinkovicz,G. Szirmai,K. Penc
Physics , 2015,
Abstract: The classical ground states of the SU(4) Heisenberg model on the face centered cubic lattice constitute a highly degenerate manifold. We explicitly construct all the classical ground states of the model. To describe quantum fluctuations above these classical states, we apply linear flavor-wave theory. At zero temperature, the bosonic flavor waves select the simplest of these SU(4) symmetry breaking states, the four-sublattice ordered state defined by the cubic unit cell of the fcc lattice. Due to geometrical constraints, flavor waves interact along specific planes only, thus rendering the system effectively two dimensional and forbidding ordering at finite temperatures. We argue that longer range interactions generated by quantum fluctuations can shift the transition to finite temperatures.
On the Origin of the Common Bean (Phaseolus vulgaris L.)  [PDF]
Andrés J. Cortés
American Journal of Plant Sciences (AJPS) , 2013, DOI: 10.4236/ajps.2013.410248

Phylogeographic methods provide the tools to accurately access the geographic origin and diversification of crop species. In the present commentary, I urge the common bean community to face those methods and a tree-thinking mentality with regards to the long standing debate of the origin of common bean. Such efforts will ultimately bring back interest into wild bean studies and reinforce the uniqueness of this species as a system to study diversification, domestication and adaptive processes across the two most diverse hotspots in the world.

The Role of R&D in Shaping Public Sector Typologies: An European Perspective  [PDF]
Andrés Maroto, Luis Rubalcaba
Modern Economy (ME) , 2012, DOI: 10.4236/me.2012.37110
Abstract: One of functions of the modern public states for improving dynamism in the economic system is the use of their support to cope with the market and systemic failures created in the innovation area: the R&D promoted by public administrations can be considered a dimension, among others, of their performance in society. This paper explores the relationships between the R&D promoted by public administrations and the different typologies of states from a European perspective. The results show some similarities between the public sectors in terms of general characteristics such as performance or stability and the most R&D-oriented promoters. However, differences are found depending on indicators and types analyzed. The existence of large differences within each type of public sector is also confirmed. Results suggest the influence that pro-innovation profiles of public sectors might exert on general innovation system and performance patterns in EU countries.
A Global Public Good: The Linkage between Veterinary Medicine and the Sanitary Management of Food Hygiene  [PDF]
Andrés Cartín Rojas
American Journal of Industrial and Business Management (AJIBM) , 2013, DOI: 10.4236/ajibm.2013.35058

Ensuring food safety is a key and crucial factor for those agro-exporting nations seeking to improve their competitiveness, opening new options for global markets and positioning their products at a better price. A number of international guidelines serve a reference framework for defining national public policies aimed to provide safe food to the population. Veterinary services act as guarantors in this process along all the manufacture and value chain. The public and private veterinary services are nurtured and amalgamate together to ensure the attainment of common goals; strengthen and foment a robust and efficient alimentary legislation by using the World Animal Health Organization’s normative as a standard reference. In this conceptual paper, an appraisal about the interrelationship and the interconnection between veterinary professionals and the sanitary management of food hygiene is widely developed by reviewing relevant literature, and discussing current trends. The author adopts an inductive approach, designed to generate understanding and propositions about this relevant topic.

Theoretical Deduction of the Hubble Law Beginning with a MoND Theory in Context of the ΛFRW-Cosmology  [PDF]
Nelson Falcon, Andrés Aguirre
International Journal of Astronomy and Astrophysics (IJAA) , 2014, DOI: 10.4236/ijaa.2014.44051
Abstract: We deduced the Hubble law and the age of the Universe, through the introduction of the Inverse Yukawa Field (IYF), as a non-local additive complement of the Newtonian gravitation (Modified Newtonian Dynamics). As a result, we connected the dynamics of astronomical objects at great scale with the Friedmann-Robertson-Walker ΛFRW) model. From the corresponding formalism, the Hubble law can be expressed as = (4π[G]/c)r, which was derived by evaluating the IYF force at distances much greater than 50 Mpc, giving a maximum value for the expansion rate of the universe of H0(max≈ 86.31 km·s-1Mpc-1, consistent with the observational data of 392 astronomical objects from NASA/IPAC Extragalactic Database (NED). This additional field (IYF) provides a simple interpretation of dark energy as the action of baryonic matter at large scales. Additionally, we calculated the age of the universe as 11 Gyr, in agreement with recent measurements of the age of the white dwarfs in the solar neighborhood.
Homogeneous linewidth of the I_11/2--I_15/2 optical transition of erbium in LiNbO_3:Er^3+
G. Mandula,Z. Kis,P. Sinkovicz,L. Kovács
Physics , 2010, DOI: 10.1088/1757-899X/15/1/012062
Abstract: We work out a simple, pulsed pump-probe measurement scheme to measure the homogeneous linewidth of an atomic transition in an inhomogeneously broadened spectral line in a solid state environment. We apply the theory to the I_11/2 -- I_15/2 optical transition of erbium in LiNbO_3:Er^3+ crystal. Beside obtaining the homogeneous linewidth, we have estimated the population relaxation time as well.
Quantized recurrence time in iterated open quantum dynamics
P. Sinkovicz,Z. Kurucz,T. Kiss,J. K. Asbóth
Physics , 2014, DOI: 10.1103/PhysRevA.91.042108
Abstract: The expected return time to the original state is a key concept characterizing systems obeying both classical or quantum dynamics. We consider iterated open quantum dynamical systems in finite dimensional Hilbert spaces, a broad class of systems that includes classical Markov chains and unitary discrete time quantum walks on networks. Starting from a pure state, the time evolution is induced by repeated applications of a general quantum channel, in each timestep followed by a measurement to detect whether the system has returned to the original state. We prove that if the superoperator is unital in the relevant Hilbert space (the part of the Hilbert space explored by the system), then the expectation value of the return time is an integer, equal to the dimension of this relevant Hilbert space. We illustrate our results on partially coherent quantum walks on finite graphs. Our work connects the previously known quantization of the expected return time for bistochastic Markov chains and for unitary quantum walks, and shows that these are special cases of a more general statement. The expected return time is thus a quantitative measure of the size of the part of the Hilbert space available to the system when the dynamics is started from a certain state.
Spin liquid phases of alkaline-earth-metal atoms at finite temperature
P. Sinkovicz,A. Zamora,E. Szirmai,M. Lewenstein,G. Szirmai
Physics , 2013, DOI: 10.1103/PhysRevA.88.043619
Abstract: We study spin liquid phases of spin-5/2 alkaline earth atoms on a honeycomb lattice at finite temperatures. Our analysis is based on a Gutzwiller projection variational approach recast to a path-integral formalism. In the framework of a saddle-point approximation we determine spin liquid phases with lowest free energy and study their temperature dependence. We identify a critical temperature, where all the spin liquid phases melt and the system goes to the paramagnetic phase. We also study the stability of the saddle-point solutions and show that a time-reversal symmetry breaking state, a so called chiral spin liquid phase is realized even at finite temperatures. We also determine the spin structure factor, which, in principle, is an experimentally measurable quantity and is the basic tool to map the spectrum of elementary excitations of the system.
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