THE MANIFESTATION OF HEALTH-CONSCIOUSNESS IN FOOD PREFERENCE AND CONSUMPTION AMONG YOUNG PEOPLE ACCORDING TO AN EMPIRIC STUDY

In our study we set out to find answers to the question of how today’s secondary schools students in Hungary assessed certain food products. We examined in the target group also the development of relationship between the preference of a certain product and its assessment from the health point of view. We assumed that both the preference and assessment of food for its effects on health were not only influenced by the gender of consumers but also by the type of the school attended and to a large extent by the development level of the region of domicile. In conclusion, young people had shown some signs of awareness of what is healthy eating and they had been able to differentiate between healthy and unhealthy foodstuffs, but their consumption was still significantly dominated by what they considered to be pleasant food. A possible consequence of this finding is that nearly a quarter of young people and a third of boys consider themselves suffering from overweight. XXXXXXXXXXXXXXXXXXXXXXXXXXXXX Kutatásunkban arra kerestük a választ, hogy a mai magyar középiskolások körében milyen a megítélése az egyes élelmiszeripari termékeknek. Vizsgáltuk, hogy az élelmiszerek kedveltsége és annak egészségesség megítélése között ho-gyan alakul a kapcsolat a vizsgált csoport esetében. Feltételezésünk volt, hogy mind a kedveltséget, mind a különbözÅ‘ élelmiszerek megítélését az egészségesség szempontjából nemcsak a fogyasztók neme, de az iskola típusa és a lakóhely sze-rinti régió gazdasági fejlettsége is nagy mértékben befolyásolja. Összességében megállapítást nyert, hogy bár a fiatalok mutattak olyan jeleket, hogy ismerik az egészséges táplálkozás alapjait, illetve hogy különbséget tudnak tenni egészséges és egészségtelen élelmiszerek között, mégis fogyasztásukat ma még sokkal inkább az élvezeti jellemzÅ‘k dominálják. Talán ennek is köszönhetÅ‘, hogy a fiatalok saját magukról kiállított bizonyítványa alapján közel egynegyedük küszködik súlyproblémával – a fiúknak pedig az egyharmada!questionnary, high schools, level of healthy consumption, kérdőíves felmérés, középiskolások, egészséges fogyasztás szintje, Food Consumption/Nutrition/Food Safety, Marketing,

Feasibility of extractive distillation process variants in batch rectifier column

A systematic comparison is presented about the separation tasks of azeotropic and close-boiling mixtures applying batch extractive distillation (BED) in rectifier. All the eight possible mixture types with at most a single azeotrope (minimum and maximum boiling azeotropes with heavy, light, and intermediate boiling entrainers; and close boiling mixtures with heavy and light entrainers) are compared. The main results of the feasibility studies on the hitherto unpublished cases are presented. All the cases are feasible in batch rectifier, applying BED. The operation steps are determined by the relative position of the azeotropic composition and entrainer in bubble point ranking. The main limiting parameters (F/V, N, Epremix) are also determined by the mentioned relative position; only the existence of maximum number of stages in the rectifying section is determined by the type of the azeotrope. Use of residue curves maps (RCMs) for predicting feasibility is not generally satisfactory, but profiles maps can be used instead. Studying only the total reflux case can be misleading, and should be treated with great care. The theoretical results of separation variants applying intermediate boiling entrainer were proved experimentally

Batch Extractive Distillation with Light Entrainer

Use of a light entrainer in batch extractive distillation is justified when the mixture boils at a high temperature, or when an appropriate heavy or intermediate entrainer cannot be found. Feasibility of batch extractive distillation with light entrainer for separating minimum and maximum boiling azeotropes and close boiling mixtures is studied in this article. Our test mixtures are: ethanol/water (minimum boiling azeotrope) with methanol, water/ethylene diamine (maximum boiling azeotrope) with methanol, and chlorobenzene/ethylbenzene (close boiling mixture) with 4-methylheptane. Feasibility, operating steps, limiting entrainer flows, limiting reflux ratios, and limiting number of theoretical stages are determined by parametric study on profiles maps, and verified by rigorous simulation. The effects of reflux ratio, feed ratio, feed stage, number of stages, and thermodynamic state of the entrainer are also examined. It can be established, as a result, that processes separating either minimum or maximum boiling azeotropes, or close boiling mixtures, in batch extractive distillation using a light entrainer are feasible

Non-abelian lattice gauge theory with a topological action

SU(2) gauge theory is investigated with a lattice action which is insensitive to small perturbations of the lattice gauge fields. Bare perturbation theory can not be defined for such actions at all. We compare non-perturbative continuum results with that obtained by the usual Wilson plaquette action. The compared observables span a wide range of interesting phenomena: zero temperature large volume behavior (topological susceptibility), finite temperature phase transition (critical exponents and critical temperature) and also the small volume regime (discrete β-function or step-scaling function). In the continuum limit perfect agreement is found indicating that universality holds for these topological lattice actions as well

Etude de faisabilité de la séparation éthylenediamine – eau avec méthanol dans un stripper extractif batch

En présence d’eau (W), l’éthylène diamine (EDA) forme un mélange azéotropique de point de bulle maximum dont séparation est impossible par distillation conventionnelle. Elle peut être réalisée dans une colonne de distillation extractive inverse discontinue (BES) alimentée en continue par un solvant (méthanol (MeOH)). Le mélange à séparer est introduit dans le bac de tête permettant alors de soutirer le produit au bouilleur. Une étude de faisabilité basée sur l’analyse des diagrammes de composition de colonne montre que le procédé permet d’obtenir un produit pur à 95% en EDA si le tiers corps est alimenté à un point intermédiaire de la colonne. Les étapes opératoires de la séparation sont : 1/ remplissage (F/L’=0 ; s=∞); 2/ nettoyage (F/L’>0 ; s=∞); 3/ production EDA (F/L’>0 ; s<∞) ; 4/ coupe intermédiaire ; production W et régénération MeOH (F/L’=0 ; s<∞). Un bon rendement (~80% en EDA) est atteint par simulation rigoureuse, ProsimBatc

Optimal Forager Against Ideal Free Distributed Prey

The introduced dispersal-foraging game is a combination of prey habi2 tat selection among two patch types and optimal foraging approaches. Prey’s patch 3 preference and forager behavior determine the prey’s survival rate. The forager’s 4 energy gain depends on local prey density in both types of exhaustible patches and 5 on leaving time. 6 We introduce two game solution concepts. The static solution combines the ideal 7 free distribution of the prey with optimal foraging theory. The dynamical solution 8 is given by a game dynamics, describing the behavioral changes of prey and forager. 9 We show that (a) each stable equilibrium dynamical solution is always a static 10 solution, but not conversely; (b) at an equilibrium dynamical solution, the forager 11 can stabilize prey mixed patch use strategy in cases where ideal free distribution 12 theory predicts that prey will use only one patch type; (c) when the equilibrium 13 dynamical solution is unstable at fixed prey density, stable behavior cycles occur 14 where neither forager nor prey keep a fixed behavior

Probing pattern and dynamics of disulfide bridges using synthesis and NMR of an ion channel blocker peptide toxin with multiple diselenide bonds

Anuroctoxin (AnTx), a 35-amino-acid scorpion toxin containing four disulfide bridges, is a high affinity blocker of the voltage-gated potassium channel Kv1.3, but also blocks Kv1.2. To improve potential therapeutic use of the toxin, we have designed a double substituted analog, [N17A/F32T]-AnTx, which showed comparable Kv1.3 affinity to the wild-type peptide, but also a 2500-fold increase in the selectivity for Kv1.3 over Kv1.2. In the present study we have achieved the chemical synthesis of a Sec-analog in which all cysteine (Cys) residues have been replaced by selenocysteine (Sec) forming four diselenide bonds. To the best of our knowledge this is the first time to replace, by chemical synthesis, all disulfide bonds with isosteric diselenides in a peptide/protein. Gratifyingly, the key pharmacological properties of the Sec-[N17A/F32T]-AnTx are retained since the peptide is functionally active. We also propose here a combined experimental and theoretical approach including NOE- and Se-77-based NMR supplemented by MD simulations for conformational and dynamic characterization of the Sec-[N17A/F32T]-AnTx. Using this combined approach allowed us to attain unequivocal assignment of all four diselenide bonds and supplemental MD simulations allowed characterization of the conformational dynamics around each disulfide/diselenide bridge

Eros re-rooted : the possibilities of interpreting Diotima's speech

The thesis sets out to explore the gender-implications of the eros-concept elaborated in Diotima’s Symposium speech. While seeking the possibilities of interpreting Diotima’s teaching, the paper also presents an interpretation of my own. I propose that Alcibiades’ speech may serve as a prism that highlights the Dionysiac side of Diotima’s eros. The project is realized in an interdisciplinary manner. The philosophy of sexual difference, modem hermeneutics, as well as methods from literary theory and classical philology are employed. The feminist endeavor of re-reading the philosophical canon has brought about several interpretations of the Symposium, which often seem methodologically incompatible with one another. One of the main arguments of the thesis is that these clashing approaches may be reconciled via Gadamer’s model of dialogue and a joint use of their methodologies may be achieved through applying Wolfgang Iser’s theory of interpretation. The first part of the thesis problematizes these theoretical issues through a comparative analysis of two feminist readings of Diotima’s speech, those of Luce Irigaray and Andrea Nye. The second part investigates the gender-aspects of Diotima’s speech. An analysis of Alcibiades’ speech shows how the Dionysiac plays an important role in understanding Diotima’s eros and in unfolding its gender implications via the philosophy of sexual difference. The notion of sexual difference enables the analyst to recognize Diotima as a male consruct of a female image that Plato creates in order to appropriate the female experience of birth to his philosophy. The problem areas dealt with in this section are the mimetic male desire for female experience, immortality, and the figure of the birth-giving male. Alongside Adriana Cavarero’s work, the thesis is an attempt to “snatch” back the feminine discourse of Diotima’s speech from its male-centered symbolic surroundings through the figure of Dionysus