Number of results to display per page
Search Results
1592. AERIAL NAVIGATION; CONTAINING A DESCRIPTION OF A PROPOSED FLYING MACHINE, ON A NEW PRINCIPLE.
- Creator:
- Daedalus Britannicus and Gilbert, James
- Publisher:
- Gilbert, James
- Format:
- print and 16 pp + [1] obr. příl. ; 8°
- Type:
- model:monograph and TEXT
- Subject:
- století 19. and letectví
- Language:
- English
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
1593. Aerial photogrammetry observation of the subsidence depression near Karviná
- Creator:
- Vlastimil Kajzar, Doležalová, Hana, Kamil Souček, and Staš, Lubomír
- Format:
- print, bez média, and svazek
- Type:
- article, články, model:article, and TEXT
- Subject:
- Geologie. Meteorologie. Klimatologie, letecká fotogrammetrie, aerial photogrammetry, subsidence depression, monitoring, GNSS, 7, and 551
- Language:
- English
- Description:
- Aerial photogrammetry was chosen as an additional observation method of the subsidence depression that was created above exploited coal mining panels near Karviná. While individual points of a permanent observation network were repeatedly surveyed by GNSS, the whole subsidence depression was surveyed by the aerial photogrammetry. As this method was applied three times (during three years) we can compare its results in individual years and observe the major surface changes on the undermined area. Also, a comparison was realized between the points’ coordinates gained from both aerial photogrammetry and GNSS. The results show that the method of aerial photogrammetry enriches and complements the GNSS observation in monitoring the spatial development and shape of the subsidence depression, especially in the areas of active recultivation., Vlastimil Kajzar, Hana Doležalová, Kamil Souček and Lubomír Staš., and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
1594. Aerobic exercise of low to moderate intensity corrects unequal changes in BKCa subunit expression in the mesenteric arteries of spontaneously hypertensive rats
- Creator:
- Zhang, Y., Chen, Y., Zhang, L., Lu, N., and Shi, L.
- Format:
- print, bez média, and svazek
- Type:
- article, články, journal articles, model:article, and TEXT
- Subject:
- Fyziologie člověka a srovnávací fyziologie, hypertenze, hypertension, exercise intensity, BKCa channel, 14, and 612
- Language:
- English
- Description:
- Accumulating evidence indicates that hypertension is associated with "ion channel remodeling" of vascular smooth muscle cells (VSMCs). The objective of this study was to determine the effects of exercise intensity/volume on hypertension-associated changes in large-conductance Ca2+-activated K+ (BKCa) channels in mesenteric arteries (MAs) from spontaneously hypertensive rats (SHR). Male SHRs were randomly assigned to three groups: a low-intensity aerobic exercise group (SHR-L: 14 m/min), a moderate-intensity aerobic exercise group (SHR-M: 20 m/min), and a sedentary group (SHR). Age-matched Wistar-Kyoto rats (WKYs) were used as normotensive controls. Exercise groups completed an 8-week exercise program. Elevation of the α and β1 proteins was unequal in MA myocytes from SHRs, with the β1 subunit increasing more than the α subunit. BKCa contribution to vascular tone regulation was higher in the myocytes and arteries of SHRs compared to WKYs. SHR BKCa channel subunit protein expression, β1/α ratio, whole cell current density and single-channel open probability was also increased compared with WKYs. Aerobic exercise lowered systemic blood pressure and normalized hypertension-associated BKCa alterations to normotensive control levels in the SHRs. These effects were more pronounced in the moderate-intensity group than in the low-intensity group. There is a dose-effect for aerobic exercise training in the range of low to moderate-intensity and accompanying volume for the correction of the pathological adaptation of BKCa channels in myocytes of MAs from SHR., Y. Zhang, Y. Chen, L. Zhang, N. Lu, L. Shi., and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
1595. Aerobní a specifický trénink nádechových svalů u pacientů s chronickým srdečním selháním – přehledový článek
- Creator:
- Dosbaba, F., Žurková, Petra, Ludka, Ondřej, Vysoký, Robert, Baťalík, Ladislav, Špinar, Jindřich, and Kolařík, O.
- Format:
- print, text, and regular print
- Type:
- model:article, article, Text, práce podpořená grantem, přehledy, and TEXT
- Subject:
- lidé, chronická nemoc, srdeční selhání--rehabilitace, ambulantní péče, terapie cvičením--metody, cvičení, silový trénink, zátěžový test, cvičení - výdrž, dyspnoe--rehabilitace, dechová cvičení--metody, inspirační kapacita, dýchací svaly--fyziologie, kombinovaná terapie, kombinovaný trénink, inspirační svalstvo, Threshold IMT, and aerobní kapacita
- Language:
- Czech and English
- Description:
- Moderní kardiovaskulární rehabilitace u pacientů s chronickým srdečním selháním (CHSS) je v zahraničí chápána jako multidisciplinární proces. I přes obrovské pokroky v léčbě tohoto těžkého onemocnění není zatím v České republice věnována prakticky žádná pozornost ambulantní rehabilitační péči o nemocné s chronickým srdečním selháním. Přitom vhodně nastavená pohybová aktivita prokazatelně zvyšuje kvalitu života a omezuje náklady na léčbu těchto nemocných. Tento přehledový článek poukazuje na velký přínos kardiovaskulární rehabilitace pro pacienty s CHSS. Klíčová slova: chronické srdeční selhání – kombinovaný trénink – aerobní kapacita – kvalita života – Threshold IMT – inspirační svalstvo, Foreign specialists understand modern cardiac rehabilitation in patients with chronic heart failure (CHF) as a multidisciplinary process. Despite huge advances in the treatment of this severe disease in the Czech Republic, virtually no attention is paid to outpatient rehabilitation care for these patients, although appropriately chosen physical activity demonstrably improves quality of life and reduces the cost of treatment provided to these patients. This review highlights the great benefits of cardiac rehabilitation for patients with CHF. Keywords: chronic heart failure – combined training – aerobic capacity – quality of life – Threshold IMT – inspiratory muscle, and Dosbaba F., Žurková P., Ludka O., Vysoký R., Baťalík L., Špinar J., Kolařík O.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
1596. Aerodynamic forces measured on a fluttering profile
- Creator:
- Vlček, Václav, Zolotarev, Igor, and Kozánek, Jan
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- aeroelastic experiments, self-excited vibrations, wind tunnel, and interferometry
- Language:
- English
- Description:
- The study presents evaluation of optical measurements of the air flow field near the fluttering profile NACA0015 with two-degrees of freedom, Mach number of the flutter occurence were M = 0.21 and M = 0.45. Aerodynamic forces (drag and lift components) were evaluated independently on the upper and lower surfaces of the profile. Using the mentioned decomposition, the new information about mechanism of flutter properties was obtained. The forces on the upper and lower surfaces are phase shifted and are partially eliminated as a result of the circulation around the profile. The cycle changes of these forces cause the permanent energy contribution from the airflow to the vibrating system. and Obsahuje seznam literatury
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
1597. Aeroelastic sensitivity analysis of airliner wing
- Creator:
- Čečrdle, Jiří and Vích, Ondřej
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- aeroelasticity, flutter, eigenvalue, sensitivity, and FNG wing
- Language:
- English
- Description:
- This paper describes the airliner wing flutter sensitivity analysis. The sensitivity coefficients define the influence of the structural parameter changes to tthe structure eigenvalue and flutter stability characteristics. Evaluated structural parameters represent the possible changes of the structure due to the installation of the smart high-lift devices at the leading and trailing edge region. In general, we can suppose the increasing of the mass and mass moment of inertia around the elastic axis and decreasing of the stiffness. Described effects are ordinarily considered destabilizing regarding the flutter. The main aim of the presented work is to evaluate the impact of components to the stability and to define the most critical regions or parameters. and Obsahuje seznam literatury
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
1598. Aeroelasticity of slender plexiglass facades
- Creator:
- Tesár, Alexander
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- aeroelasticity, equations of motion, frequency domain, laminar and turbulent air flow, plexiglass sheet, slender facades, transient dynamics, wave approach, and wind canal
- Language:
- English
- Description:
- Assessment of ultimate aeroelastic response of slender facades equipped with thin plexiglass sheets. The wave approach is used for modeling of aeroelastic wind forcing. The analysis of structural response is based on the transient dynamics. Some theoretical approaches are specified with experimental verification in the wind canal. The comparison of numerical and experimental approaches is made in order to demonstrate the efficiency of the procedures suggested. and Obsahuje seznam literatury
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
1599. Aesthetics in implantology
- Creator:
- Somanathan, Rakesh V.
- Type:
- model:article and TEXT
- Language:
- English
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
1600. Aestivation in Pieris brassicae (Lepidoptera: Pieridae): Implications for parasitism
- Creator:
- Spieth, Hubert R. and Schwarzer, Elke
- Type:
- article, model:article, and TEXT
- Subject:
- Pieris brassicae, Cotesia glomerata, Braconidae, photoperiodic response, aestivation, migration, parasitism, and Iberian peninsula
- Language:
- English
- Description:
- Only in the southern part of the Iberian Peninsula the large white butterfly Pieris brassicae was recorded to pass the summer in pupal aestivation, induced by long-day photoperiods. It is not clear why this photoperiodic response is regionally restricted. We investigated whether the change of life history in P. brassicae may affect the infestation by parasites. This was done by testing the coincidence of photoperiodic responses in both the host P. brassicae and in its main parasitoid Cotesia glomerata. While the response under short-day conditions was very similar in both species, no summer dormancy of any type was found in the parasitoid at photophases >= 15h and temperatures of 15°-25°C in contrast to 100% aestivation in the host. We suggest that aestivation is a response which allows the host to desynchronise its life cycle from that of its parasitoid. This is effective because parasitoid wasps cannot pass the temporary absence of suitable host stages by a similar developmental rest. C. glomerata is then forced to switch to less adequate host species which diminishes its reproductive success.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public