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2. 5. medzinárodný kongres o výskume uremického syndrómu a uremickej toxicity, 7. nefrologická konferencia baltických štátov. 18.-20. mája 2007, Sopot-Gdańsk (Poľská republika)

Creator:
Mydlík, Miroslav and Derzsiová, Katarína
Type:
model:article, article, Text, and TEXT
Subject:
uremie and hemolyticko-uremický syndrom
Language:
Czech and Slovak
Description:
Miroslav Mydlík, Katarína Derzsiová and Lit. 2
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

3. A combined CFD-experimental method for abrasive erosion testing of concrete

Creator:
Messa, Gianandrea Vittorio, Branco, Renan De Lima, Filho, José Gilberto Dalfré, and Malavasi, Stefano
Type:
article, model:article, and TEXT
Subject:
abrasive erosion, computational fluid dynamics, concrete, experiments, and two-phase flow
Language:
Slovak
Description:
Serious damage may occur to concrete hydraulic structures, such as water galleries, spillways, and stilling basins, due to the abrasive erosion caused by the presence of solid particles in the flow. This underlines the importance of being capable in providing characterization of the concrete from the point of view of its vulnerability to abrasive erosion, in order to improve the design of the structure and the material selection. Nevertheless, the existing apparatus for concrete abrasive erosion testing are either far from allowing realistic simulation of the actual environment in which this phenomenon occurs, or show a large degree of complexity and cost. An alternative method has been developed with the aid of Computational Fluid Dynamics (CFD). CFD was first employed to verify the effectiveness of a new laboratory equipment. Afterwards, a parameter has been introduced which, by successful comparison against preliminary experiments, proved suitable to quantify the effect of the fluid dynamic conditions on the concrete abrasive erosion, thereby opening the way to CFD-based customization of the apparatus. In the future, the synergy of numerical and physical modelling will allow developing predictive models for concrete erosion, making it possible to reliably simulate real structures.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

4. A modified hydrodynamic model for routing unsteady flow in a river having piedmont zone

Creator:
Patowary, Sudarshan and Sarma, Arup Kumar
Type:
article, model:article, and TEXT
Subject:
groundwater flow, numerical modeling, piedmont zone, Green-Ampt. Equation, and surface water equation
Language:
Slovak
Description:
Existence of piedmont zone in a river bed is a critical parameter from among numerous variations of topographical, geological and geographical conditions that can significantly influence the river flow scenario. Downstream flow situation assessed by routing of upstream hydrograph may yield higher flow depth if existence of such high infiltration zone is ignored and therefore it is a matter of concern for water resources planning and flood management. This work proposes a novel modified hydrodynamic model that has the potential to accurately determine the flow scenario in presence of piedmont zone. The model has been developed using unsteady free surface flow equations, coupled with Green-Ampt infiltration equation as governing equation. For solution of the governing equations Beam and Warming implicit finite difference scheme has been used. The proposed model was first validated from the field data of Trout Creek River showing excellent agreement. The validated model was then applied to a hypothetical river reach commensurate with the size of major tributaries of Brahmaputra Basin of India. Results indicated a 10% and 14% difference in the maximum value of discharge and depth hydrograph in presence and absence of piedmont zone respectively. Overall this model was successfully used to accurately predict the effect of piedmont zone on the unsteady flow in a river.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

5. A multi-parameter calibration method for the numerical simulation of morphodynamic problems

Creator:
Evangelista, Stefania, Giovinco, Gaspare, and Kocaman, Selahattin
Type:
article, model:article, and TEXT
Subject:
optimization, calibration, multi-parameter, numerical models, morphodynamic models, and dike erosion
Language:
Slovak
Description:
Calibration of parameters of mathematical models is still a tough task in several engineering problems. Many of the models adopted for the numerical simulations of real phenomena, in fact, are of empirical derivation. Therefore, they include parameters which have to be calibrated in order to correctly reproduce the physical evidence. Thus, the success of a numerical model application depends on the quality of the performed calibration, which can be of great complexity, especially if the number of parameters is higher than one. Calibration is traditionally performed by engineers and researchers through manual trial-and-error procedures. However, since models themselves are increasingly sophisticated, it seems more proper to look at more advanced calibration procedures. In this work, in particular, an optimization technique for a multi-parameter calibration is applied to a two-phase depth-averaged model, already adopted in previous works to simulate morphodynamic processes, such as, for example, the dike erosion by overtopping.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

6. A novel fuzzy clustering approach to regionalise watersheds with an automatic determination of optimal number of clusters

Creator:
Senent-Aparicio, Javier, Soto, Jesús, Pérez-Sánchez, Julio, and Garrido, Jorge
Type:
article, model:article, and TEXT
Subject:
fuzzy Clustering;, regionalisation, Alto Genil, hydrological homogeneity, and regional flood frequency analysis
Language:
Slovak
Description:
One of the most important problems faced in hydrology is the estimation of flood magnitudes and frequencies in ungauged basins. Hydrological regionalisation is used to transfer information from gauged watersheds to ungauged watersheds. However, to obtain reliable results, the watersheds involved must have a similar hydrological behaviour. In this study, two different clustering approaches are used and compared to identify the hydrologically homogeneous regions. Fuzzy C-Means algorithm (FCM), which is widely used for regionalisation studies, needs the calculation of cluster validity indices in order to determine the optimal number of clusters. Fuzzy Minimals algorithm (FM), which presents an advantage compared with others fuzzy clustering algorithms, does not need to know a priori the number of clusters, so cluster validity indices are not used. Regional homogeneity test based on L-moments approach is used to check homogeneity of regions identified by both cluster analysis approaches. The validation of the FM algorithm in deriving homogeneous regions for flood frequency analysis is illustrated through its application to data from the watersheds in Alto Genil (South Spain). According to the results, FM algorithm is recommended for identifying the hydrologically homogeneous regions for regional frequency analysis.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

12. Akútna inverzia maternice: analýza 3 prípadov

Creator:
Dosedla, Erik, Frič, Dušan, Richnavský, Ján, and Lukačín, Štefan
Type:
model:article, article, Text, kazuistiky, and TEXT
Subject:
lidé, dospělí, ženské pohlaví, nemoci dělohy--etiologie, inverze dělohy--diagnóza--etiologie--terapie, komplikace porodu--diagnóza--etiologie, porodní doba třetí, vedení porodu, děložní krvácení--etiologie--terapie, akutní nemoc, and placenta
Language:
Czech, Slovak, and English
Description:
Akútna inverzia maternice je závažná pôrodnícka komplikácia, pri ktorej je perakútne ohrozený život rodičky. Pri inverzii maternice dochádza k rôznemu stupňu poklesu tela maternice. Príčinou inverzie je takmer vždy nesprávny postup vedenia III. doby pôrodnej. Okamžitou diagnostikou a neodkladnou adekvátnou liečbou sa minimalizuje materská morbidita a mortalita. Prezentujeme praktický postup riešenia tejto komplikácie, ktorý sme zostavili na základe skúseností s tromi prípadmi kompletnej inverzie maternice a literárnych údajov., Acute uterine inversion is severe obstetric and life threatening complication. As immediate consequences of uterine inversion are different degrees of uterine prolaps. The pathogenesis of uterine inversion is usually associated with an incorrect management of the third stage of labour. Immediate diagnosis and prompt action minimize maternal morbidity and mortality. We report three cases of the uterine inversion with a guideline supported with a literature review., Erik Dosedla, Dušan Frič, Ján Richnavský, Štefan Lukačín, and Lit.: 19
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

14. Akútne a chronické aortové choroby hrudníkovej a brušnej aorty u dospelých. Odporúčania Angiologickej sekcie Slovenskej lekárskej komory pre klasifikáciu a diagnózu chorôb aorty (AS SLK, 2014)

Creator:
Gavorník, Peter, Dukát, Andrej, and Gašpar, Ľudovít
Format:
print, text, and regular print
Type:
model:article, article, Text, směrnice pro lékařskou praxi, and TEXT
Subject:
lidé, dospělí, chronická nemoc, akutní nemoc, aorta thoracica--patofyziologie, aorta abdominalis--patofyziologie, nemoci aorty--etiologie--klasifikace--patofyziologie, aorta--fyziologie--patofyziologie, disekující aneurysma--klasifikace--patofyziologie, aortální aneurysma--etiologie--patofyziologie, and vzácné nemoci--klasifikace
Language:
Czech, Slovak, and English
Description:
Tak, ako orgánovovaskulárne artériové ischemické choroby (srdcovocievne, cievnocievne, nervovocievne, končatinovocievne, obličkovocievne, pohlavnocievne, pľúcnocievne, črevnocievne, kostnokĺbovosvalovocievne, kožnocievne, očnocievne, ušnocievne, zubnocievne a ďalšie orgánovocievne artériové choroby), aj aortové choroby prispievajú k širokému spektru artériových chorôb: aneuryzmy aorty (AA), akútne aortové syndrómy (AAS), vrátane aortovej disekcie (AD), intramurálneho hematómu (IMH), penetrujúcej aterosklerotickej ulcerácie (PAU), ďalej traumatické poškodenie aorty (TAI), pseudoaneuryzma, ruptúra aorty, ateroskleróza, vaskulitídy, ako aj genetické choroby (napr. Turnerov syndróm, Marfanov syndróm, Ehlersov-Danlosov syndróm) a kongenitálne abnormality, vrátane koarktácie aorty (CoA). Podobne ako iné artériové choroby, aj aortové choroby môžu byť diagnostikované po dlhom časovom období subklinického vývinu alebo sa manifestujú akútne. Akútny aortový syndróm (AAS) je často prvým znakom choroby, ktorá vyžaduje rýchlu diagnózu, rýchle rozhodnutie a rýchlu akciu k zníženiu extrémne nepriaznivej prognózy. V dokumente sa analyzujú kľúčové klinicko-etiologicko-anatomicko-patofyziologické (CEAP) diagnostické aspekty aortových chorôb (projekt CIEVY)., In addition to organovascular arterial ischemic diseases (cardiovascular, vasculovascular, neurovascular, extre­mitovascular, renovascular, genitovascular, bronchopulmovascular, mesenteriovascular, osteoarthromusculovascular, dermovascular, oculovascular, otovascular, stomatovascular etc.), aortic diseases contribute to the wide spectrum of arterial diseases: aortic aneurysms (AA), acute aortic syndromes (AAS) including aortic dissection (AD), intramural haematoma (IMH), penetrating atherosclerotic ulcer (PAU) and traumatic aortic injury (TAI), pseudoaneurysm, aortic rupture, atherosclerosis, vasculitis as well as genetic diseases (e.g. Turner syndrome, Marfan syndrome, Ehlers-Danlos syndrome) and congenital abnormalities including the coarctation of the aorta (CoA). Similarly to other arterial diseases, aortic diseases may be diagnosed after a long period of subclinical development or they may have an acute presentation. Acute aortic syndrome is often the first sign of the disease, which needs rapid diagnosis and decisionmaking to reduce the extremely poor prognosis. Key clinical-etiology-anatomy-patophysiology (CEAP) diagnostic aspects of aortic diseases are discussed in this document (project Vessels)., and Peter Gavorník, Andrej Dukát, Ľudovít Gašpar
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

16. Algoritmus hormonálnych vyšetrení v diferenciálnej diagnostike gynekologických endokrinopatií

Creator:
Václavová, Zuzana, Payer, Juraj, and Borovský, Miroslav
Type:
model:article, article, Text, and TEXT
Subject:
diferenciální diagnóza--METODY, hormony--ANALÝZA, diagnostické techniky endokrinologické--METODY, nemoci endokrinního systému--DIAGNÓZA--ETIOLOGIE, algoritmy, systém hypotalamus-hypofýza, ovarium, lidé, and ženské pohlaví
Language:
Czech and Slovak
Description:
Zuzana Václavová, Miroslav Borovský, Juraj Payer and Lit: 5
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

17. An alternative approach in hydrograph decomposition and separation of the baseflow

Creator:
Aguilar, Victor Manuel Salas , Gómez, Víctor Reyes, and Pellat, Fernando Paz
Type:
article, model:article, and TEXT
Subject:
recession curve, groundwater discharge, expo-linear model, and reservoir
Language:
Slovak
Description:
The identification of the moment when direct flow ends and baseflow begins is one of the biggest challenges of hydrological cycle modeling. The objectives of this research were: to characterize the recession curves (RC) and to separate the components of the hydrograph in a compact model. The RC were extracted from time series in three subwatersheds in Mexico. An expo-linear model was adapted and fitted to the master recession curves to find the transition point of the hydrograph and separate the baseflow. The model discriminated the RC in two decreasing ratios: one linear associated to the direct flow, and one exponential linked to the baseflow. The transition point between these two flows was obtained analytically by equaling both ratios. The derivation of a model parameter allowed to find the maximum points in the hydrometric time series, which were the criterion to separate the baseflow. The application of this model is recommended in the analysis of RC with different magnitudes from the flexibility and attachment to the fundaments of exhaustion of a reservoir.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

18. An unusual kind of diurnal streamflow variation

Creator:
Cuevas, Jaime G., Arumí, José L., Zúñiga-Feest, Alejandra, and Little, Christian
Type:
article, model:article, and TEXT
Subject:
evapotranspiration, groundwater, riparian zones, streamflow, and swamp forests
Language:
Slovak
Description:
During hydrological research in a Chilean swamp forest, we noted a pattern of higher streamflows close to midday and lower ones close to midnight, the opposite of an evapotranspiration (Et)-driven cycle. We analyzed this diurnal streamflow signal (DSS), which appeared mid-spring (in the growing season). The end of this DSS coincided with a sustained rain event in autumn, which deeply affected stream and meteorological variables. A survey along the stream revealed that the DSS maximum and minimum values appeared 6 and 4 hours earlier, respectively, at headwaters located in the mountain forests/ plantations than at the control point in the swamp forest. Et in the swamp forest was higher in the morning and in the late afternoon, but this process could not influence the groundwater stage. Trees in the mountain headwaters reached their maximum Ets in the early morning and/or close to midday. Our results suggest that the DSS is a wave that moves from forests high in the mountains towards lowland areas, where Et is decoupled from the DSS. This signal delay seems to convert the link between streamflow and Et in an apparent, but spurious positive relationship. It also highlights the role of landscape heterogeneity in shaping hydrological processes.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

19. Analysis of in situ water velocity distributions in the lowland river floodplain covered by grassland and reed marsh habitats - a case study of the bypass channel of Warta River (Western Poland)

Creator:
Laks, Ireneusz, Szoszkiewicz, Krzysztof, and Kałuża, Tomasz
Type:
article, model:article, and TEXT
Subject:
floodplain vegetation, flow resistance, in situ measurements, and velocity distribution
Language:
Slovak
Description:
The analysis of in situ measurements of velocity distribution in the floodplain of the lowland river has been carried out. The survey area was located on a bypass channel of the Warta River (West of Poland) which is filled with water only in case of flood waves. The floodplain is covered by grassland and reed marsh habitats. The velocity measurements were performed with an acoustic Doppler current profiler (ADCP) in a cross-section with a bed reinforced with concrete slabs. The measured velocities have reflected the differentiated impact of various vegetation types on the loss of water flow energy. The statistical analyses have proven a relationship between the local velocities and the type of plant communities.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

20. Analýza obalu dát

Creator:
Novosádová, Ivana and Dlouhý, Martin
Format:
106-109
Type:
model:article, article, Text, and TEXT
Subject:
komplexní management jakosti--metody--trendy--využití, interpretace statistických dat, nemocnice pro chronická onemocnění--ekonomika, modely ekonometrické, financování organizované--využití, and ekonomika nemocniční
Language:
Czech, Slovak, and English
Description:
Analýza obalu dát predstavuje užitočný model kvantitatívnej ekonomickej analýzy pre hodnotenie efektívnosti produkčných jednotiek vo verejnom sektore, pre získanie ich usporiadania a odhalenia zdrojov neefektívnosti. Možnosti analýzy obalu dát na úrovni jednotlivej LDN sme ilustrovali na príklade jednej z liečební. Výsledky, ktoré sme získali týmito analýzami, by sme mali brať ako prvotnú informáciu o efektívnosti či neefektívnosti jednotlivých zariadení. Pre prax zaujímavejšie výsledky by bolo možné získať pri hodnotení na úrovni oddelení a pri dostupnosti informácií o prípadovom mixe liečených pacientov. Ďalšou zaujímavou analýzou by mohla byť analýza vývoja efektívnosti v čase. Limitovaná dostupnosť údajov o poskytovaných službách zatiaľ neumožňuje uskutočniť porovnanie efektívnosti a kvality poskytovateľov v českom zdravotníctve., This paper deals with a non-parametric method for efficiency evaluation - data envelopment analysis (DEA). DEA evaluates efficiency of production units with the help of mathematical programming by specifying the production frontier as the most pessimistic piecewise linear envelopment of the data. In case that a hospital is inefficient the method determines the sources of inefficiency and defines corresponding target values. In this study, we analyze the sample of Czech long-term hospitals in 2005., Ivana Novosádová, Martin Dlouhý, and Lit.: 4
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

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