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31322. The effect of sodium ions on the excystment of HymenolepsisS Diminuta Cysticercoids
- Creator:
- Barrett, J. and Precious, W.Y.
- Format:
- Type:
- model:internalpart and TEXT
- Language:
- English
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
31323. The effect of soil pH and precipitation variability during the growing season on maize hybrid grain yield in a 17 year long-term experiment
- Creator:
- Nagy, János
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- long-term experiment, maize, grain yield, hybrid, maturity groups, growing season, precipitation, soil pH, dlhotrvajúci experiment, kukurica, úroda zrna, hybrid kukurice, skupiny skorosti, vegetačné obdobie, zrážky, and pH pôdy
- Language:
- Slovak
- Description:
- We established a multifactoral long-term field experiment at the Látókép experimental site of the University of Debrecen (Debrecen, Hungary), on mid-heavy calcareous chernozem soil in 1984, using experimental data from 17 years (1990-2008). We examined the extent to which soil fertility affects maize yield under natural conditions (without fertilisation). We analysed the effect of precipitation in the winter period (from the harvest of the previous crop (maize) until sowing (i.e. October-March)) and the growing season (i.e. April-September) on yield and we evaluated yield per FAO group. We examined the joint effect of crop year and hybrid maturity groups on maize yield; then we evaluated how hybrid maturity groups per crop year and wet and dry years per ripening group affected maize yield. It was shown that the pH value of soil significantly affected yield and also that there was a strong positive correlation between pH value and yield (r = 0.81) at a 1% significance level. The correlation between the two variables is described by a linear regression line. The slope shows that a 0.1 soil pH increase results in a 510 kg ha-1 maize yield increase on average. The correlation between the amount of precipitation during the growing season and maize yield is average, positive (r = 0.718) and linear. Based on the parameters of the estimated regression line - within non-fertilised conditions - 1 mm increase of precipitation resulted in a 9 kg ha-1 increase in yield. The analysis of the joint effect of hybrid maturity groups and crop year on yield showed that crop year determines standard deviation six times more than hybrid maturity groups, whereas the effect their interaction was not significant. and Práca bsahuje výsledky multifaktorového, dlhodobého pokusu na experimentálnej ploche Látókép, Univerzity v Debrecíne (Debrecen, Maďarsko). Experiment prebiehal od roku 1984, v tejto práci boli použité údaje z experimentu získané počas 17tich rokov (1990-2008). Pôda je stredne ťažká černozem. Bol skúmaný vplyv pôdnej úrodnosti na úrodu kukurice v prirodzených podmienkach, bez hnojenia. Študoval sa predovšetkým vplyv zrážok počas zimného obdobia (od zberu úrody kukurice až po nasledujúcu sejbu, t.j. od októbra do marca) a vplyv zrážok počas vegetačného obdobia (apríl -september) na úrodu kukurice. Okrem toho sa študoval vplyv ''sezóny'' a skupín skorosti hybridov na úrodu kukurice. Bolo vyhodnotený tiež vplyv skupiny skorosti hybridov počas suchých a mokrých rokov na úrodu kukurice. Bolo preukázané, že hodnota pH pôdy významne ovplyvňuje úrodu; súčiniteľ lineárnej korelácie medzi pH a úrodou na úrovni významnosti 1% bol r = 0,81. Z tejto korelácie vyplýva, že zvýšenie pH o 0,1 spôsobuje zvýšenie úrody kukurice priemerne o 510 kg ha-1. Korelácia medzi úrnom zrážok počas vegetačného obdobia kukurice a úrodou je pozitívna a lineárna (r = 0,718), z analýzy vyplýva, že zvýšenie úhrnu zrážok o 1 mm spôsobí priemerné zvýšenie úrody kukurice o 9 kg ha-1. Z výsledkov analýzy spoločného vplyvu skupín skorosti hybridov a sezóny vyplýva, že konkrétna sezóna ovplyvňuje tvorbu úrod 6-krát významnejšie, ako skupina skorosti hybridov; interakcia medzi skupinami skorosti hybridov a vlastnosťami sezóny nie je významná.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
31324. The effect of soil surfactants on soil hydrological behavior, the plant growth environment, irrigation efficiency and water conservation
- Creator:
- Moore, Demie, Kostka, Stanley J., Boerth, Thomas J., Franklin, Mica, Ritsema, Coen J., Dekker, Louis W., Oostindie, Klaas, Stoof, Cathelijne, and Wesseling, Jan
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- soil water repellency, irrigation efficiency, runoff, preferential flow, soil wetting agents, soil surfactants, water conservation, vodoodpudivosť pôdy, efektívnosť závlahy, povrchovo aktívne látky, preferované prúdenie, and retencia pôdy
- Language:
- Slovak
- Description:
- Soil water repellency causes at least temporal changes in the hydrological properties of a soil which result in, among other things, suboptimal growing conditions and increased irrigation requirements. Water repellency in soil is more widespread than previously thought and has been identified in many soil types under a wide array of climatic conditions worldwide. Consequences of soil water repellency include loss of wettability, increased runoff and preferential flow, reduced access to water for plants, reduced irrigation efficiency, increased requirement for water and other inputs, and increased potential for non-point source pollution. Research indicates that certain soil surfactants can be used to manage soil water repellency by modifying the flow dynamics of water and restoring soil wettability. This results in improved hydrological behavior of those soils. Consequently, the plant growth environment is also improved and significant water conservation is possible through more efficient functioning of the soil. and Vodoodpudivosť pôdy spôsobuje prinajmenšom dočasné zmeny v hydrologických vlastnostiach pôdy, ktoré okrem iného môžu viesť k suboptimálnym podmienkam rastu rastlín a k zvýšenej potrebe závlah. Vodoodpudivosť pôdy je rozšírenejší jav, ako sa pôvodne predpokladalo; bola identifikovaná v mnohých pôdnych typoch a klimatických podmienkach na celom svete. Dôsledkom vodoodpudivosti pôdy je strata zmáčavosti, zvýšený povrchový odtok a preferenčné prúdenie, znížená dostupnosť vody a iných vstupov pre rastliny, znížený účinok závlah, zvýšené požiadavky na vodu a iné vstupy, ako aj zvýšené riziko plošného znečistenia. Výskum naznačuje, že niektoré povrchovo aktívne látky (soil surfactants) môžu upraviť vodoodpudivosť pôdy obnovením omáčania a modifikáciou dynamiky vody. Výsledkom je zlepšenie hydrologických vlastností pôdy. Podobne, výsledkom je zlepšenie prostredia pre rast rastlín, zvýšenie retencie vody v pôde a teda aj efektívnejšia funkcia pôdy.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
31325. The effect of soil tillage system on soil bulk density and other physical and hydrophysical characteristics of Gleyic Fluvisol
- Creator:
- Mati, Rastislav and Kotorová, Dana
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- conventional tillage, no-tillage system, gleyic fluvisol, soil hydrophysical characteristic, klasická agrotechnika, bezorbový systém, fluvizem glejová, and hydrofyzikálne charakteristiky pôdy
- Language:
- Slovak
- Description:
- Different sustainable systems of husbandry on soil with various protective technologies are frequently studied. Direct sowing without ploughing is one of the alternatives. This article presents results of the effect of conventional tillage (CT) and no-tillage system (NT) on soil bulk density, soil porosity, maximum capillary capacity and available water capacity of Gleyic Fluvisol in conditions of the East-Slovakian Lowland. Observed years 1999 - 2005 from point of wiev of annual sum of precipitation are valued as dry till humid and of annual average air temperature as normal or warm. The effect of used agrotechnical arrangements was statistically highly significant (α = 0.01) for porosity changes and statistically significant for soil bulk density (α = 0.05). Non-significant effect was found for maximum capillary capacity and available water capacity. In the soil layer 0 - 0.3 m during years 1999 - 2005 soil bulk density increased about 22 kg m-3 (1.54 %) at no-tillage system in comparison to conventional tillage. At no-tillage system average values of porosity decreased about 1.32 %, maximum capillary capacity and available water capacity non-significantly decreased about 0.32 % in comparison to conventional tillage. and V trvalo udržateľných sústavách hospodárenia na pôde sa do popredia dostávajú rôzne ochranné technológie obrábania pôdy, medzi ktoré patrí aj priama sejba bez orby. Predkladaný príspevok sa zaoberá vplyvom konvenčnej agrotechniky (CT) a bezorbového systému (NT) na objemovú hmotnosť, pórovitosť, maximálnu kapilárnu kapacitu a využiteľnú vodnú kapacitu fluvizeme glejovej v podmienkach Východoslovenskej nížiny. Sledované roky 1999 - 2005 sú z hľadiska ročných zrážkových úhrnov hodnotené ako suché až vlhké a z hľadiska priemerných ročných teplôt vzduchu ako normálne, resp. teplé. Vplyv použitých systémov agrotechnických opatrení sa štatisticky významne (α = 0,01) prejavil pri pórovitosti, štatisticky na hranici významnosti (α = 0,05) pri objemovej hmotnosti a štatisticky nevýznamne pri maximálnej kapilárnej kapacite a využiteľnej vodnej kapacite. V porovnaní s konvenčnou agrotechnikou sa pri bezorbovom systéme zvýšili priemerné hodnoty objemovej hmotnosti vo vrstve pôdneho profilu do 0 - 0,3 m za roky 1999 - 2005 o 22 kg m-3 (1,54 %); priemerné hodnoty pórovitosti sa znížili o 1,32 %, hodnoty maximálnej kapilárnej kapacity a využiteľnej vodnej kapacity o 0,32 %.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
31326. The effect of sulforaphane on perinatal hypoxic-ischemic brain injury in rats
- Creator:
- Kapoor, Sonam, Kala, David, Svoboda, Jan, Daněk, Jan, Faridová, Adéla, Brnoliaková, Zuzana, Mikulecká, Anna, Folbergrová, Jaroslava, and Otáhal, Jakub
- Format:
- počítač and online zdroj
- Type:
- model:article and TEXT
- Subject:
- perinatal hypoxic-ischemic insult, rat, FDG-PET, sulforaphane, neuronal damage, and motor impairment
- Language:
- English
- Description:
- Perinatal hypoxic-ischemic insult (HII) is one of the main devastating causes of morbidity and mortality in newborns. HII induces brain injury which evolves to neurological sequelae later in life. Hypothermia is the only therapeutic approach available capable of diminishing brain impairment after HII. Finding a novel therapeutic method to reduce the severity of brain injury and its consequences is critical in neonatology. The present paper aimed to evaluate the effect of sulforaphane (SFN) pre-treatment on glucose metabolism, neurodegeneration, and functional outcome at the acute, sub-acute, and sub-chronic time intervals in the experimental model of perinatal hypoxic-ischemic insult in rats. To estimate the effect of SFN on brain glucose uptake we have performed 18F-deoxyglucose (FDG) μCT/PET. The activity of FDG was determined in the hippocampus and sensorimotor cortex. Neurodegeneration was assessed by histological analysis of Nissl-stained brain sections. To investigate functional outcomes a battery of behavioral tests was employed. We have shown that although SFN possesses a protective effect on glucose uptake in the ischemic hippocampus 24 h and 1 week after HII, no effect has been observed in the motor cortex. We have further shown that the ischemic hippocampal formation tends to be thinner in HIE and SFN treatment tends to reverse this pattern. We have observed subtle chronic movement deficit after HII detected by ladder rung walking test with no protective effect of SFN. SFN should be thus considered as a potent neuroprotective drug with the capability to interfere with pathophysiological processes triggered by perinatal hypoxicischemic insult.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
31327. The effect of terrorist incidents on capital flows
- Creator:
- Filer, Randall Keith, Stanišić, Dragana, Univerzita Karlova. Centrum pro ekonomický výzkum a doktorské studium, and Národohospodářský ústav (Akademie věd ČR)
- Publisher:
- CERGE-EI
- Format:
- electronic and 20 s : 5 tb.
- Type:
- model:monograph and TEXT
- Subject:
- Světová ekonomika a mezinárodní finance, terorismus, ekonomické aspekty, zahraniční přímé investice, terrorism, economic aspects, foreign direct investments, 323.28, 33, 339.727.22, (048.8), 4, and 339.7/.9
- Language:
- English
- Description:
- Randall K. Filer, Dragana Stanišić. and born digital
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
31328. The effect of time in a multi-dimensional marriage market model
- Creator:
- Vozár, Mário, Kejak, Michal, Univerzita Karlova. Centrum pro ekonomický výzkum a doktorské studium, and Národohospodářský ústav (Akademie věd ČR)
- Publisher:
- CERGE-EI
- Format:
- electronic and 32 s.
- Type:
- model:monograph and TEXT
- Subject:
- Sociální interakce. Sociální komunikace, partnerské vztahy, stárnutí, rozvod, matematické modelování, 316.472.42, 612.67, 364.642, 519.673, (048.8), 18, and 316.4/.7
- Language:
- English
- Description:
- Mário Vozár., Evropský sociální fond Praha & EU: Investujeme do vaší budoucnosti, and born digital
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
31329. The effect of triiodothyronine on cell oxidative capacity in regenerating rat liver
- Creator:
- Svátková, R., Červinková, Z., Kalous, M., Rauchová, H., and Drahota, Z.
- Type:
- article, model:article, and TEXT
- Subject:
- liver regeneration, triiodothyronine, mitochondria, cytochrome c oxidase, and glycerol-3-phosphate cytochrome c reductase
- Language:
- English
- Description:
- The recovery of total DNA content and recovery of total cytochrome c oxidase activity in the rat liver after partial hepatectomy is accelerated by triiodothyronine applied in three doses, two before and one immediately after liver resection. Triiodothyronine-treated animals already have higher cytochrome c oxidase activity before resection. The recovery of the tissue oxidative capacity after partial hepatectomy is more rapid in triiodothyronine-treated animals. These data indicate that hormonal activation of the liver regeneration process is involved.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
31330. The Effect of Triiodothyronine on Changes of Membrane Fluidity in Regenerating Rat Liver
- Creator:
- Drahota, Z., Rauchová, H., Sedlák, V., Kočí, J., and Červinková, Z.
- Type:
- article, model:article, and TEXT
- Subject:
- Liver regeneration, Membrane fluidity, Triiodothyronine, and Mitochondria
- Language:
- English
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public