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2182. Cooling-evoked hemodynamic perturbations facilitate sympathetic activity with subsequent myogenic vascular oscillations via alpha2-adrenergic receptors

Creator:
Lin, Y.-H., Liu, Y.-P., Lin, Y.-C., Lee, P.-L., and Tung, C.-S.
Format:
print, bez média, and svazek
Type:
article, články, journal articles, model:article, and TEXT
Subject:
Fyziologie člověka a srovnávací fyziologie, fyziologie, physiology, cold stimulation, power spectral analysis, sympathetic activation, alpha2-adrenoceptors, myogenic vascular oscillations, 14, and 612
Language:
English
Description:
This study extends our previous work by examining the effects of alpha2 -adrenoceptors under cold stimulation involving the increase of myogenic vascular oscillations as increases of very-low-frequency and low-frequency of the blood pressure variab ility. Forty-eight adult male Sprague-Dawley rats were randomly divided into four groups: vehicle; yohimbine; hexamethonium+yohimbine; guanethidine+yohimbine. Systolic blood pressure, heart rate, power spectral analysis of spontaneous blood pressure and he art rate variability and spectral coherence at very-low-frequency (0.02 to 0.2 Hz), low-frequency (0.2 to 0.6 Hz), and high-frequency (0.6 to 3.0 Hz) regions were monitored using telemetry. Key findings are as follows: 1) Cooling-induced pressor response was attenuated by yohimbine and further attenuated by hexamethonium+yohimbine and guanethidine+yohimbine, 2) Cooling-induced tachycardia response of yohimbine was attenuated by hexame - thonium+yohimbine and guanethidine+yohimbine, 3) Different patterns of p ower spectrum reaction and coherence value compared hexamethonium+yohimbine and guanethi-dine+yohimbine to yohimbine alone under cold stimulation. The results suggest that sympathetic activation of the postsynaptic alpha2-adrenoceptors causes vasoconstriction and heightening myogenic vascular oscillations, in turn, may increase blood flow to prevent tissue damage under stressful cooling challenge., Y.-H. Lin, Y.-P. Liu, Y.-C. Lin, P.-L. Lee, C.-S. Tung., and Obsahuje bibliografii
Rights:
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2185. Copies of lnp’S uniformly in the spaces 2(C[0,1],X) and 1(C[0,1],X)

Creator:
Popa, Dumitru
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
matematika, mathematics, average, multiplication operator, p-summing linear operators, copies of ln p’s uniformly, local structure of a Banach space, 13, and 51
Language:
English
Description:
We study the presence of copies of ln p ’s uniformly in the spaces 2(C[0, 1],X) and 1(C[0, 1],X). By using Dvoretzky’s theorem we deduce that if X is an infinite- dimensional Banach space, then 2(C[0, 1],X) contains p2-uniformly copies of ln∞’s and 1(C[0, 1],X) contains -uniformly copies of ln 2 ’s for all > 1. As an application, we show that if X is an infinite-dimensional Banach space then the spaces 2(C[0, 1],X) and 1(C[0, 1],X) are distinct, extending the well-known result that the spaces 2(C[0, 1],X) and N(C[0, 1],X) are distinct., Dumitru Popa., and Seznam literatury
Rights:
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2186. Coping a rezistencia voči mobbingu v kontexte paradigmatického prístupu

Creator:
Vitková, Mária and Kateřina Zábrodská
Format:
print
Type:
article, články, model:article, and TEXT
Subject:
Psychologie, mobbing, coping, resistance, workplace bullying, paradigm, 17, and 159.9
Language:
Czech
Description:
Mobbing (šikanovanie na pracovisku) označuje dlhodobé hostilné správanie na pracovisku, ktoré vedie k negatívnym dôsledkom pre mobbovaných zamestnancov, pracovný kolektív i organizáciu. Výskum v tejto oblasti bol doposiaľ orientovaný primárne na zisťovanie prevalencie a foriem mobbingu, avšak iba málo pozornosti bolo venovanej otázke, ako sa napadnutí zamestnanci voči mobbingu bránia. Cieľom tejto štúdie je zaplniť túto medzeru a prezentovať prehľad výskumných zistení týkajúcich sa reakcií zamestnancov zasiahnutých mobbingom, a to ako vo forme úsilia mobbing zvládnuť (copingové stratégie) a/lebo mu vzdorovať (stratégie rezistencie). Zároveň autorky v nadväznosti na paradigmatický prístup k mobbingu (Samnani, 2013) ukazujú, že coping a rezistencia sú skúmané v rámci troch odlišných paradigiem: funkcionalistickej, interpretatívnej a postmodernej. Diskutujú teoretické a praktické implikácie koexistencie týchto paradigiem a formulujú odporúčania pre budúci výskum., Workplace bullying refers to long-term hostile behavior at work, with highly negative impact on targeted employees, work collectives, and organizations. To date, workplace bullying research has predominantly examined prevalence and forms of bullying. In contrast, considerably less attention has been paid to the ways in which targeted employees defy bullying at work. The aim of this paper is to address this gap by presenting an overview of research findings regarding strategies used by targeted employees to cope with and/or resist bullying at work. Following the paradigmatic approach in workplace bullying research (Samnani, 2013), the authors also show that coping and resistance have been explored within three different paradigms: functionalist, interpretative, and postmodern. They discuss theoretical and practical implications of the coexistence of these diverse paradigms and offer recommendations for future research., Mária Vitková, Kateřina Zábrodská., and Obsahuje bibliografii a bibliografické odkazy
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

2187. Copper-induced changes in reproductive functions: in vivo and in vitro effects

Creator:
Roychoudhury, S., Nath, S., Peter Massányi, Stawarz, R., Kacaniova, M., and Kolesarova, A.
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Fyziologie člověka a srovnávací fyziologie, měď, copper, effect, reproductive function, in vivo, in vitro, nanotoxicity, 14, and 612
Language:
English
Description:
The goal of this study is to summarize the current knowledge on the effects of one of the essential metals, copper (Cu) on the reproductive system. The development of past four decades addressing effects of Cu on reproductive organs is reviewed. The most relevant data obtained from in vivo and in vitro experiments performed on humans and other mammals, including effects of copper nanoparticles (CuNPs) on the reproductive functions are presented. Short term Cu admi nistration has been found to exert deleterious effect on intracellular organelles of rat ovarian cells in vivo . In vitro administration in porcine ovarian granulosa cells releases insulin-like growth factor (IGF-I), steroid hormone progesterone (P4), and induces expression of peptides related to proliferation and apoptosis. Adverse effect of Cu on male reproductive functions has been indicated by the decrease in spermatozoa parameters such as concentration, viability and motility. Copper nanoparticles are capable of generating oxidative stress in vitro thereby leading to reproductive toxicity. Toxic effect of CuNPs has been evident more in male mice than in females. Even though further investigations are necessary to arrive at a definitive conclusion, Cu notably influences the reproductive functions by interfering with both male and female reproductive systems and also hampers embryo development in dose-dependent manner., S. Roychoudhury, S. Nath, P. Massanyi, R. Stawarz, M. Kacaniova, A. Kolesarova., and Obsahuje bibliografii
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

2189. CORDIS propojuje vědce a inovátory ve znalostní ekonomice

Creator:
Vosečková, Anna
Format:
print, bez média, and svazek
Type:
article, rozhovory, model:article, and TEXT
Subject:
Věda. Všeobecnosti. Základy vědy a kultury. Vědecká práce, Lebaube, Philippe, Evropská komise., Community Research and Development Information Service, výzkum a vývoj, služby, research and development, service industries, 12, and 00
Language:
Czech
Description:
In this issue, we feature an interview with Phillipe Lebaube, head of the CORDIS Unit of EU’s Publication, for a detailed view on its activities. CORDIS, information space devoted to European research and development and technology transfer, has been in operation for nearly two decades now. and Anna Vosečková.
Rights:
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2190. Cornelii Nepotis Liber de excellentibus ducibus exterarum gentium

Creator:
Cornelius Nepos, František Patočka, and Vilém Steinmann
Publisher:
I.L. Kober
Format:
print, text, regular print, and 91, 84 s., 1 vlepená mapa ; 19 cm
Type:
model:monograph and TEXT
Subject:
Biografie, osobnosti, starověké Řecko, starověký Řím, 929, (37), (38), (092), and 8
Language:
Latin and Czech
Description:
usui scholarum accommodavit Franciscus Patočka
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

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