92 research outputs found
Environmental aspects of Hungarian consumers’ food choice
Enhancing of environmental awareness is not just a local aim, is a global priority that will contribute to ensuring a sustainable future. As one of the Sustainable Development Goals of the United Nations as well as among the key areas of the FOOD2030 priorities, sustainable and healthy diets have to be promoted both locally and globally. Even the environmental aspects are not the leading elements of the Hungarian consumers’ food choice (Törőcsik, 2009; Hofmeister-Tóth et al., 2011) and the rate of the most committed consumer group to sustainability is almost 8% (Lehota et al., 2014), the level of awareness is constantly rising (Dudás, 2011; Gulyás, 2017). In order to support this process identification of the intervention points is essential. Thus the aim of the present paper was to examine the appearance of the environmental factors in Hungarian consumers’ food choice decisions and their relation to the level of healthy lifestyle.info:eu-repo/semantics/publishedVersio
Quantitative Estimation of the Ratio of GABA-Immunoreactive Cells in Neocortical Grafts
Somatosensory anlage from 17-18 day old rat
embryos were transplanted in place of the
removed barrel cortex in adult rats. Six to eight
months after transplantation, the grafts were
either completely separated by glial scar or
partly separated and partly confluent with the
host neocortex. Each was studied histologically
and immunostained for GABA. It was found that
in partly confluent grafts the neuronal density
was similar or even higher than in the host
cortex, while the cell number in the separate
grafts was much lower than in the nearby host
cortex. The number of GABA-positive cells,
however, was in all grafts significantly lower
(2.9% on average) than in the normal cortex
(11.8% on average).The decline in GABA-stained
nerve cells was highest in separated
grafts, but was somewhat less marked in
transplants partly confluent with the host tissue.
The possible role of partial or total
deafferentation as well as the relative
vulnerability of the transplanted tissue by
temporary hypoxia and other metabolic
disturbances are discussed as the probable
factors in selective decline of GABA-ergic cells in
the transplanted somatosensory cortex
Age-Related Loss of GABA-Positive and GABA-Negative Neurons in Neocortical Transplants
The numerical density of GABA
immunopositive and GABA immunonegative
neurons was quantitatively determined in 0, 12,
30 and 90 day-old neocortical transplants,
derived from E17 rat embryos and transplanted
into adult hosts. It was found that the original,
very high neuronal density in the fetal
transplant declined steadily after
transplantation to the somatosensory cortex of
adult rat. The decline in numerical density of
GABA-positive neurons, however, was
disproportionately larger than that of GABA-negative
nerve cells: At 90 days the proportion
of GABA-positive cells was 2.3% (in contrast to
the 11.8% in the adult host cortex). The density
of GABA-negative neurons, on the other hand,
remained slightly higher than comparable
values in the control cortex. The decline in
density Of GABA-positive neurons was
continuous until the 90th post-transplantation
day, while final, close to normal density values
of GABA-negative nerve cells were already
reached in 30 day-old grafts, with no significant
change afterwards
From Anti-equilibrium to The Socialist System and Beyond
This essay attempts to understand János Kornai’s works from a political economy perspective. It argues that Kornai has significantly contributed to the formation of a new paradigm of political economy. The main endeavor of Kornai has been the combination of analytical concepts of economics with the empirical description of real economies. After a certain period of theoretical experimentation János Kornai formulated his research program that can be called the shortage economy explanation of the socialist system. The Economics of Shortage and The Socialist System have created a new theoretical paradigm in a framework in which it has become possible to establish a connection between the analytical and empirical, universal and historical aspects of the theory studying the socialist system as a real economic entity. János Kornai has built his analysis of the socialist system on the primary role of politics in the creation of economic institutions. In his present work on capitalism he has extended this thesis to the capitalist system. This seems to be an important contribution of his to a new political economy paradigm that is just in the process of formation
What Economics of Shortage and The Socialist System have to say to the (Hungarian) readers today
Receptive field atlas and related CNN models
In this paper we demonstrate the potential of the cellular nonlinear/neural network paradigm (CNN) that of the analogic cellular computer architecture (called CNN Universal Machine | CNN-UM) in modeling different parts and aspects of the nervous system. The structure of the living sensory systems and the CNN share a lot of features in common: local interconnections ("receptive field architecture"), nonlinear and delayed synapses for the processing tasks, the
potentiality of feedback and using the advantages of both the analog and logic signal-processing mode. The results of more than ten years of cooperative work of many engineers and neurobiologists have been collected in an atlas: what we present here is a kind of selection from these studies emphasizing the exibility of the CNN computing: visual, tactile and auditory modalities
are concerned
Electrophysiological Characterization of The Cerebellum in the Arterially Perfused Hindbrain and Upper Body of The Rat
In the present study, a non-pulsatile arterially perfused hindbrain and upper body rat preparation is described which is an extension of the brainstem preparation reported by Potts et al., (Brain Res Bull 53(1):59–67), 1. The modified in situ preparation allows study of cerebellar function whilst preserving the integrity of many of its interconnections with the brainstem, upper spinal cord and the peripheral nervous system of the head and forelimbs. Evoked mossy fibre, climbing fibre and parallel fibre field potentials and EMG activity elicited in forelimb biceps muscle by interpositus stimulation provided evidence that both cerebellar inputs and outputs remain operational in this preparation. Similarly, the spontaneous and evoked single unit activity of Purkinje cells, putative Golgi cells, molecular interneurones and cerebellar nuclear neurones was similar to activity patterns reported in vivo. The advantages of the preparation include the ability to record, without the complications of anaesthesia, stabile single unit activity for extended periods (3 h or more), from regions of the rat cerebellum that are difficult to access in vivo. The preparation should therefore be a useful adjunct to in vitro and in vivo studies of neural circuits underlying cerebellar contributions to movement control and motor learning
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