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Abstract

Background and aims: This study investigated the role of self-regulation competencies in general and specifically in a food-related context for the control of body weight in a three-year weight loss program. Methods: The sample consisted of 30 male and female adolescents (age range: 11–18 years) who participated in a three-year therapy program for severe obesity (mean BMI at the beginning of the intervention was 33.6). Assessment of self-regulation competencies was conducted at three different stages (1st–3rd graduation/class year). Therefore, three independent groups of adolescents (N = 10) at these different stages were tested (initial-to final-stage of therapy). At the time of testing the BMI of these groups significantly differed from 38.8 to 28.7. Analyses of covariance were performed to determine whether the adolescents also differed in self-regulation skills like “resistance to temptation” and food-related Stroop interference along with ameliorating their energy-balance regulation. Results: In addition to the main effects of age and body mass index, adolescents further displayed significant improvements of executive functions with respect to resistance to temptation and inhibition. Conclusions: Interventions aimed at enhancing energy-balance regulation in adolescents may further benefit from efforts to facilitate executive functions such as self-regulation and food-related cognitive inhibition.

Open access
Pollack Periodica
Authors: Mykola Sysyn, Vitalii Kovalchuk, Ulf Gerber, Olga Nabochenko, and Andriy Pentsak

Abstract

Railway ballast tamping is one of the cost-expensive renewal and maintenance works of railway superstructure. The quality of ballast consolidation influences its resistance to residual deformations and long-term deterioration of track geometry. The process of ballast compaction along the sleeper under the vibration loading is complex and depends on many factors. The ballast flow processes under the vibration loading can produce both consolidation and un-consolidation of ballast material. The present study is devoted to the experimental investigation of ballast consolidation inhomogeneity. The method of ballast local consolidation measurement is proposed. The method is based on the velocity of impact wave propagation that is measured with device. The application of modern microcontroller and sensor techniques provided simple and reliable multi-point velocity measurements in a ballast layer. That enables well enough spatial resolution of ballast consolidation inhomogeneity. The measurement analysis has shown more than 4 times higher consolidation under the sleeper center than for unconsolidated ballast.

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Orvosi Hetilap
Authors: Judit Tőke, Gábor Czirják, Attila Bezzegh, Barna Vásárhelyi, Károly Rácz, and Attila Patócs

Férfiakban és nőkben a legfontosabb ösztrogénhatású hormon az ösztradiol. Férfiakban a magas ösztradiolkoncentráció és a következményes metabolikus eltérések népbetegségnek számító kórképek (cardiovascularis megbetegedések, inzulinrezisztencia, 2-es típusú diabetes mellitus) kialakulását befolyásolhatják; ösztrogéntúlsúly és tesztoszteronhiány társulása esetén növekszik ezeknek a betegségeknek a kockázata. Jelen közleményben a szerzők a férfiakban kialakuló androgénhiány és ösztrogéntúlsúly okait és következményeit, illetve a kezelési lehetőségeket foglalták össze. Orv. Hetil., 2014, 155(23), 891–896.

Open access

Abstract

Background and aims: To explore the experience of pregnancy for women who have a history of anorexia nervosa (AN), in relation to the impact of AN on pregnancy, and pregnancy on AN. Methods: Semi-structured interviews were conducted with six women with a history of AN. Data were analysed using Interpretive Phenomenological Analysis. Results: Four super-ordinate themes emerged: ‘Effortful resistance of AN’; ‘The unvalued self, valued other dialectic’; ‘In new territory’; and ‘Feeling distanced’. Conclusions: Various factors motivated the women to try and change their AN behaviours. This was achieved with varying degrees of success. Attempts to manage AN cognitions and emotions were less successful, and this aspect of their illness persisted. Whilst the baby was viewed as worthy of nurturance, the self was not. Pregnancy represented an unfamiliar experience, and was a time of relative isolation and lack of psychological support. Findings are discussed in the context of theory, research and practice.

Open access
Orvosi Hetilap
Authors: Tatjána Ábel, Anna Blázovics, Alexandra Wimmer, Gabriella Bekő, Balázs Gaál, Balázs Blazics, Mohamed Gamal Eldin, János †Fehér, and Gabriella Lengyel

resistance, and abdominal obesity in elderly men. Obesity, 2007, 15 , 1766–1773. Ingelsson E. Alcohol intake, insulin resistance, and abdominal obesity in elderly men

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; 38: 1930–1945. 4 Hanberger H, Arman D, Gill H, et al. Surveillance of microbial resistance in European Intensive Care Units: a first report from the Care-ICU programme for

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Oncol. 2015; 33: 910–915. 12 Alfarouk KO, Stock CM, Taylor S, et al. Resistance to cancer chemotherapy: failure in drug response from ADME to P

Open access

A nosocomialis infekciók gyakorisága és a kórokozók antibiotikum-rezisztenciája világszerte emelkedést mutat az intenzív osztályokon. A nem fermentáló Gram-negatív baktériumok által okozott véráramfertőzések nagyobb mortalitással hozhatók összefüggésbe. Cél és módszer: A szerzők célja a 2008-ban és 2010-ben sebészeti intenzív osztályon kezelt betegek hemokultúráiból izolált nosocomialis kórokozók antibiotikum-érzékenységi adatainak összehasonlítása volt. Eredmények: A methicillinrezisztens Staphylococcus aureus és a kiterjesztett spektrumú béta-laktamázt termelő Klebsiella ssp. és Escherichia coli érzékenysége nem változott, az Acinetobacter baumannii és a Pseudomonas aeruginosa antibiotikum-rezisztenciája nagymértékben nőtt. Multirezisztens Acinetobacter 2008-ban hemokultúrában nem fordult elő, 2010-ben azonban az összes véráramból izolált Acinetobacter csak colistinre volt érzékeny. A Pseudomonas aeruginosa érzékenysége a vizsgált időszakban a karbapenemekre és a piperacillinre jelentősen csökkent. A multirezisztens Gram-negatív kórokozókkal fertőzött betegek mortalitását nagyobbnak találták az antibiotikum-érzékeny baktériummal fertőzött betegekhez képest. Következtetések: A vizsgálat eredményei hangsúlyozzák a hatékony infekciókontroll, az adekvát dózisban és időben kezdett empirikus antibiotikum-terápia és a megfelelő nővér:beteg arány jelentőségét. Orv. Hetil., 2011, 152, 1486–1491.

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Borrelia burgdorferi, the causative agent of Lyme disease, is capable of forming biofilm in vivo and in vitro, a structure well known for its resistance to antimicrobial agents. For the formation of biofilm, signaling processes are required to communicate with the surrounding environment such as it was shown for the RpoN—RpoS alternative sigma factor and for the LuxS quorum-sensing pathways. Therefore, in this study, the wild-type B. burgdorferi and different mutant strains lacking RpoN, RpoS, and LuxS genes were studied for their growth characteristic and development of biofilm structures and markers as well as for their antibiotic sensitivity. Our results showed that all three mutants formed small, loosely formed aggregates, which expressed previously identified Borrelia biofilm markers such as alginate, extracellular DNA, and calcium. All three mutants had significantly different sensitivity to doxycyline in the early log phase spirochete cultures; however, in the biofilm rich stationary cultures, only LuxS mutant showed increased sensitivity to doxycyline compared to the wild-type strain. Our findings indicate that all three mutants have some effect on Borrelia biofilm, but the most dramatic effect was found with LuxS mutant, suggesting that the quorum-sensing pathway plays an important role of Borrelia biofilm formation and antibiotic sensitivity.

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All building materials can be affected by microbiological agents during their lifecycle. The presence of microorganisms changes the appearance of the surface, degrading it, and they can even cause health problems to the residents. The biological susceptibility is dependent on the content of nutrient based on organic compounds. Thus one of the most susceptible of those materials are earthen construction materials. The degree of fungal growth is influenced by the chemical composition and plant fibres additives as well as the external conditions such as temperature and relative humidity.

The earth plastering mortar has started to gain more attention recently as it is considered to have a low environmental impact and to increase the indoor air quality. Mechanical and physical characteristics of earth materials were studied by a number of authors but the knowledge about the biological resistance of the material is scarce.

This study intends to look into the issue of the biological colonisation of earth plasters depending on the relative humidity. The samples, made of four types of earth plasters with different plant fibres, were placed to an environment of the relative humidity ranging from 33% to 100%. During a period of 4 weeks the extent of fungal growth was observed.

Open access