937 research outputs found
Proteinuria and prealbumin (PA) and retinol binding protein (RBP) levels in workers exposed to cadmium
House of Memories and Oblivion by Filip David: Literature, Memory and Death
The aim of this paper, is to determine the status of the Holocaust themes in contemporary Serbian literature. Philip Davidās novel House of memories and oblivion contains resonances of the civilization after World War II considering the fate of Jewish people in this war. The attempt to highlight the work and the way of Western civilization to define itself in respect of the Holocaust was made. Davidās novel is an example of a literary text which tests the boundaries of narrative regarding life of those who survived the Holocaust and tryed to find their identity. Literary discourse also allows to search for the truth about the crime in the gaps of the symbolic order of our world.The aim of this paper, is to determine the status of the Holocaust themes in contemporary Serbian literature. Philip Davidās novel House of memories and oblivion contains resonances of the civilization after World War II considering the fate of Jewish people in this war. The attempt to highlight the work and the way of Western civilization to define itself in respect of the Holocaust was made. Davidās novel is an example of a literary text which tests the boundaries of narrative regarding life of those who survived the Holocaust and tryed to find their identity. Literary discourse also allows to search for the truth about the crime in the gaps of the symbolic order of our world
Membrane resonance enables stable and robust gamma oscillations
Neuronal mechanisms underlying beta/gamma oscillations (20-80 Hz) are not completely understood. Here, we show that in vivo beta/gamma oscillations in the cat visual cortex sometimes exhibit remarkably stable frequency even when inputs fluctuate dramatically. Enhanced frequency stability is associated with stronger oscillations measured in individual units and larger power in the local field potential. Simulations of neuronal circuitry demonstrate that membrane properties of inhibitory interneurons strongly determine the characteristics of emergent oscillations. Exploration of networks containing either integrator or resonator inhibitory interneurons revealed that: (i) Resonance, as opposed to integration, promotes robust oscillations with large power and stable frequency via a mechanism called RING (Resonance INduced Gamma); resonance favors synchronization by reducing phase delays between interneurons and imposes bounds on oscillation cycle duration; (ii) Stability of frequency and robustness of the oscillation also depend on the relative timing of excitatory and inhibitory volleys within the oscillation cycle; (iii) RING can reproduce characteristics of both Pyramidal INterneuron Gamma (PING) and INterneuron Gamma (ING), transcending such classifications; (iv) In RING, robust gamma oscillations are promoted by slow but are impaired by fast inputs. Results suggest that interneuronal membrane resonance can be an important ingredient for generation of robust gamma oscillations having stable frequency
Optimizing the speed of a Josephson junction
We review the application of dynamical mean-field theory to Josephson
junctions and study how to maximize the characteristic voltage IcRn which
determines the width of a rapid single flux quantum pulse, and thereby the
operating speed in digital electronics. We study a wide class of junctions
ranging from SNS, SCmS (where Cm stands for correlated metal), SINIS (where the
insulating layer is formed from a screened dipole layer), and SNSNS structures.
Our review is focused on a survey of the physical results; the formalism has
been developed elsewhere.Comment: (36 pages, 15 figures, to appear in Int. J. Mod. Phys. B
Investigation of sintering kinetics of NiO using photo acoustic spectroscopy
Sintering kinetics of NiO was investigated using photo acoustic spectroscopy This method was used to follow the change of phase and amplitude of the photo acoustic signal of nickel-oxide samples sintered at 1373 K for 15-240 min. as a function of modulation frequency of the laser beam. Fitting of experimental data enabled determination of photo acoustic properties including thermal diffusivity of sintered nickel-oxide. Analysis of the change of sample density during sintering showed that the sintering process of this material can be observed from the view
Local well-posedness of a coupled WesterveltāPennes model of nonlinear ultrasonic heating
Contains fulltext :
283547.pdf (Publisherās version ) (Open Access
The alternative energy sources review
Renewable energy sources are energy sources that are derived from nature and can be renewed. Today, they are increasingly being used because of their harmlessness to the environment. Most renewable energy technologies are powered directly or indirectly from the Sun. The composition of the Earthās atmosphere is balanced, so that the radiation into space is equal to the Ī¼mincoming solar radiation, which results in a certain energy degree within the Earthās atmosphericcomposition, and we can roughly describe it as the Earthās climate. Renewable energy is obtained from natural processes that are constantly renewed. In its various forms, it derives directly from the sun, or from heat generated deep within the Earth. It also includes electricity and heat generated from sources such as sunlight, wind, oceans, hydropower, biomass and geothermal energy, biofuels and hydrogen from renewable sources. Each of these sources has unique characteristics that influence how and where they can be used. Renewable energy sources include: solar energy, wind energy, biomass, biofuel, biogas, geothermal sources, energy of small watercourses, tidal energy, energy of the waves, internal energy of the sea and the ocean
Quest for Rare Events in three-dimensional Mesoscopic Disordered Metals
The study reports on the first large statistics numerical experiment
searching for rare eigenstates of anomalously high amplitudes in
three-dimensional diffusive metallic conductors. Only a small fraction of a
huge number of investigated eigenfunctions generates the far asymptotic tail of
their amplitude distribution function. The relevance of the relationship
between disorder and spectral averaging, as well as of the quantum transport
properties of the investigated mesoscopic samples, for the numerical
exploration of eigenstate statistics is divulged. The quest provides exact
results to serve as a reference point in understanding the limits of
approximations employed in different analytical predictions, and thereby the
physics (quantum vs semiclassical) behind large deviations from the universal
predictions of random matrix theory.Comment: 5 pages, 3 embedded EPS figures, figure 3 replaced with new findings
on spectral vs disorder averagin
Typical medium theory of Anderson localization: A local order parameter approach to strong disorder effects
We present a self-consistent theory of Anderson localization that yields a
simple algorithm to obtain \emph{typical local density of states} as an order
parameter, thereby reproducing the essential features of a phase-diagram of
localization-delocalization quantum phase transition in the standard lattice
models of disordered electron problem. Due to the local character of our
theory, it can easily be combined with dynamical mean-field approaches to
strongly correlated electrons, thus opening an attractive avenue for a genuine
{\em non-perturbative} treatment of the interplay of strong interactions and
strong disorder.Comment: 7 pages, 4 EPS figures, revised version to appear in Europhysics
Letter
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