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1033. Ars Montana. Umělecký a kulturní transfer v otevřeném prostoru česko-saského Krušnohoří na prahu raného novověku, edd. Michaela Hrubá - Michaela Ottová - Jan Royt

Creator:
František Šmahel
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
medievalistika, medievalistics, ikonografie, iconography, dějiny hornictví, history of mining, hagiografie, hagiography, konfesionalizace, confessionalisation, novověk, modern history, Krušné hory (Česko a Německo : oblast), Krušné hory Mountains Region (Czechia and Germany), 8, and 930
Language:
Czech
Description:
[autor anotace] František Šmahel.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

1035. Artefacts in gravity field modelling

Creator:
Klokočník, Jaroslav, Kostelecký, Jan, Bezděk, Aleš, and Kletetschka, Gunther
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
geologie, topografie, geology, topography, Artefacts: graining, aliasing, along-track stripes, gravity aspects, gravity field models, topography models, 7, and 551
Language:
English
Description:
Artefacts in applications of the global gravity field and topographic models based on satellite and terrestrial data of diverse kinds are studied. Various types of artefacts are presented and analysed with the aim to understand how the artefacts originated, how to reduce them (if feasible) and to avoid misinterpretations in geoscience. We work with the gravity aspects (gravity anomalies, the Marussi tensor of the second derivatives of disturbing potential, gravity invariants and their specific ratio, strike angles, and virtual deformations), and with surface or bedrock topography. Examples for the Earth, the Moon, and Mars are presented., Jaroslav Klokočník, Jan Kostelecký, Aleš Bezděk and Gunther Kleteschka., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

1036. Arterial pH and blood gas values in rats under three types of general anesthesia: a chronobiological study

Creator:
Pavol Švorc and Darina Petrášová
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
chronobiologie, anestezie, chronobiology, anesthesia, pH, blood gases, rats, 14, and 612
Language:
English
Description:
The aim of study was to review the status of arterial pH, pO2 and pCO2 under general anesthesias in dependence on the light-dark (LD) cycle in spontaneously breathing rats. The experiments were performed using three- to four-month-old pentobarbital(P)-, ketamine/xylazine(K/X)- and zoletil(Z)-anesthetized female Wistar rats after a four-week adaptation to an LD cycle (12 h light:12 h dark). The animals were divided into three experimental groups according to the anesthetic agent used: P (light n=11; dark n=8); K/X (light n=13; dark n=11); and Z (light n=18; dark n=26). pH and blood gases from arterial blood were analyzed. In P anesthesia, LD differences in pH, pO2, and pCO2 were eliminated. In K/X anesthesia, parameters showed significant LD differences. In Z anesthesia, LD differences were detected for pH and pO2 only. Acidosis, hypoxia, and hypercapnia have been reported for all types of anesthesia during the light period. In the dark period, except for P anesthesia, the environment was more stable and values fluctuated within normal ranges. From a chronobiological perspective, P anesthesia was not the most appropriate type of anesthesia in these rat experiments. It eliminated LD differences, and also produced a more acidic environment and more pronounced hypercapnia than K/X and Z anesthesias., P. Svorc, D. Petrášová, P. Svorc Jr., and Obsahuje bibliografii
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

1037. Arterial stiffening contributes to impairment of cerebrovascular reactivity in patients with coronary artery disease without carotid stenosis

Creator:
David Ručka, Marek, J., Rucklová, Z., Jean-Claude Lubanda, Štěpán Havránek, Jan Škvařil, Verejka, P., Miroslav Chochola, Debora Karetová, Korinek, J., and Aleš Linhart
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Fyziologie člověka a srovnávací fyziologie, věnčité tepny, fyziologie, coronary arteries, physiology, cerebrovascular reactivity, arterial stiffness, coronary artery disease, 14, and 612
Language:
English
Description:
Impaired cerebrovascular reactivity (CVR), an important risk factor for future stroke, is affected by a presence carotid stenosis. However, in some cases CVR can be impaired in the absence of carotid stenosis due to several poorly characterized mechanisms. We hypothesized that arterial stiffening as observed in coronary heart disease (CHD) could be associated with alteration in CVR in CHD patients without carotid stenosis. The study population consisted of patients referred for coronary angiography without significant carotid stenosis (<50 %). CVR was evaluated by breath holding index (BHI) measured with transcranial color code duplex ultrasound. Arterial stiffness was assessed by pulse wave velocity (PWV) measured by the oscillometric method. The extent of coronary atherosclerosis was quantified by Gensini score (GS). Out of 186 subjects, sixty-two patients fulfilled the inclusion and exclusion criteria. BHI decreased with increasing PWV (r = -0.47, p<0.001). Decrease in BHI was significantly inversely associated with GS (r = -0.61, p<0.001). GS was associated with PWV (p<0.001). In conclusion, impaired CVR was associated with increased arterial stiffening in CHD patients in the absence of significant carotid stenosis. Thus, we speculate that increased arterial stiffness may at least partially contribute to the pathophysiology of CVR alteration in coronary artery disease., D. Rucka, J. Marek, Z. Rucklova, J.-C. Lubanda, S. Havranek, J. Skvaril, P. Varejka, M. Chochola, D. Karetova, J. Korinek, A. Linhart., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

1038. Arthropod fauna recorded in flowers of apomictic Taraxacum section Ruderalia

Creator:
Alois Honěk, Zdenka Martinková, Jiří Skuhrovec, Miroslav Barták, Jan Bezděk, Petr Bogusch, Hadrava, Jiří, Jiří Hájek, Janšta, Petr, Josef Jelínek, Jan Kirschner, Kubáň, Vítězslav, Stanislav Pekár, Pavel Průdek, Pavel Štys, and Jan Šumpich
Format:
print, počítač, and online zdroj
Type:
article, články, journal articles, model:article, and TEXT
Subject:
Zoologie, členovci, hmyz, pyl, smetanka, arthropods, insects, pollen, Taraxacum, Arthropoda, Insecta, plant-herbivore interactions, abundance, annual variation, diurnal variation, host communities, flower temperature, 2, and 59
Language:
English
Description:
Flowers of dicotyledonous plants host communities of arthropod species. We studied the community associated with dandelion (Taraxacum section Ruderalia), a complex of apomictic micro-species abundant in central Europe. Identification of microspecies in the field was impracticable. These plants produce an abundance of flowers that host arthropod communities that are not yet fully documented. We investigated species occurrence, its diurnal and seasonal variation and some of the factors that determine the abundance of the dominant species. Insect and spiders were collected from 2010 to 2012 at a locality in Prague. Whole capitula were harvested at weekly intervals and resident arthropods were identified. Diurnal variation in insect presence and the effect of pollen and microclimate on some of the species were also examined. The insect community (> 200 species) consisted mainly of species of Hymenoptera (86 spp.), Coleoptera (56 spp.), Diptera (46 spp.) and Heteroptera (23 spp.). The most abundant were Thysanoptera (2 spp.). Pollen eaters/collectors and nectar feeders dominated over predators and occasional visitors. From April to mid-August, the insect community was dominated by Coleoptera, and later by Diptera and Hymenoptera. Except for Meligethes spp. and species breeding in the capitula, the insects occupied flowers during the daytime when the flowers were open (10-12 h in spring and only 2-4 h in late summer). The presence of Meligethes spp. in particular flowers was associated with the presence of pollen; the occurrence of Byturus ochraceus with pollen and flower temperature. Although pollination is not necessary, dandelion plants produce both nectar and pollen. The community of arthropods that visit dandelion flowers is rich despite their being ephemeral.The composition of local faunas of flower visitors, presence of floral rewards and flower microclimate are important factors determining the composition of the flower community., Alois Honěk, Zdenka Martinková, Jiří Skuhrovec, Miroslav Barták, Jan Bezděk, Petr Bogusch, Jiří Hadrava, Jiří Hájek, Petr Janšta, Josef Jelínek, Jan Kirschner, Vítězslav Kubáň, Stano Pekár, Pavel Průdek, Pavel Štys, Jan Šumpich., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

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