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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
111

Hodnocení semenářských vlastností hrachoru lučního a vikve ptačí a jejich uplatnění v trvalých travních porostech. / The evaluation of seed properties of Lathyrus pratensis and Vicia cracca and their employment in permanent grasslands.

KRATOCHVÍLOVÁ, Eva January 2015 (has links)
The theme of the thesis are climbing legumes meadow vetchling (Lathyrus pratensis) and tufted vetch (Vicia cracca). The literature search defines watched kinds of legumes and their occurence in permanent grassland. There is summarized seed growing of legumes because of its problematic production. Legumes are valuable components of grassland especially thanks to fixation of nitrogen and high capacity of proteins. The practical part is focused on observation of floristic compilation of watched locations for three years. Particular locations were compared from the point of view of changes in land management and weather. Pods and seeds of observed kinds were collected and evaluated in single years. Experiments of seed's field germination were done after different period from picking and in case of various treatment.
112

Vliv aplikace organických hnojiv na botanickou skladbu, diverzitu a pícninářské charakteristiky travních porostů / The influence of organic fertilisation on botanical composition, diversity and fodder characteristics of permanent grasslands

KINCL, Petr January 2018 (has links)
In connection with the growing area of permanent grasslands in the Czech Republic, their productive and, above all, non-productive importance is at the forefront. In addition to forage production, meadow stands represent an important component of the environment in terms of biodiversity conservation. The aim of this diploma thesis was to monitor the influence of organic fertilization on land in the cadastral of Cekov and Kařez. Observations were carried out on unheated and organically fertilized localities in 2017. Higher botanical diversity showed unheated land, where the herbal component and clover predominated. There was a higher proportion of grass on the fertilized land. In terms of grassland quality, fertilized plots were best assessed. The data analyzed were statistically evaluated.
113

Interactions de la dynamique hydro-sédimentaire avec les herbiers de phanérogames, Étang de Berre / Interactions between marine phanerogams, hydrodynamics and sedimentary processes, Berre lagoon

Paquier, Anne-Éléonore 27 November 2014 (has links)
Au début du 20ème siècle, l'étang de Berre était occupée par de larges prairies sous-marines de Zostera qui ont fortement réduit sous l'impact des pollutions et arrivées massives d'eau douce par le canal EDF. Pollutions et arrivées d'eaux ont beaucoup réduit mais les herbiers ne s'étendent pas vers le large. Cette thèse a donc pour but d'analyser les interactions entre les herbiers sous-marins de l'étang de Berre basé sur l'hypothèse que la dynamique hydro-sédimentaire peut jouer un rôle dans le maintien des herbiers à l'état relique. Dans cette lagune, le vent conditionne l'hydrodynamisme en générant des vagues de vent et des courants.L'atténuation des vagues par l'herbier est en lien avec la hauteur des vagues (dépendant de la vitesse du vent, la longueur de fetch et des effets de réfraction lié à la morphologie de la anse) et est modulée par la biométrie de l'herbier, le niveau d'eau ou la présence de courants. Alors qu'au dessus de l'herbier, les courants sont rapides et fortement influencés par le vent et les vagues de vent, une couche de transition eau-canopée permet la dissipation de l'énergie des vagues et des courants. Dans la canopée, les courants sont très atténués grâce à la présence de l'herbier. L'herbier apparaît comme un élément important de la dynamique sédimentaire car il peut, par sa simple présence, réduire l'hydrodynamisme et modifier l'évolution du fond dans et en arrière de l'herbier et protéger la plage. Le niveau de récurrence de vents forts semble contrôler les évolutions sédimentaires.Les fortes interactions de l'herbier avec la dynamique hydro-sédimentaire laissent penser qu'elle pourrait limiter leur extension dans des zones plus exposées. / Berre lagoon was occupied by extensive meadows at the turn of the 20th century which regressed down under the impact of urban and industrial pollution and inflow of the EDF canal. Even though freshwater inputs and pollutions were drastically reduced respectively in the 1980s and 1990s, meadows have not significantly gained ground. This thesis aims at analysing the interactions between seagrass meadows of Berre lagoon, hydrodynamics and sedimentary processes, based on the postulate that these mechanisms are important in the maintenance of the meadows in their present dispersed form. In the lagoon, winds constitute the dominant influence on hydrodynamics in the lagoon by generating wind waves and currents. Wave attenuation is linked to wave height, which is, in turn, dependent on wind intensity and fetch length and modified by the bay morphology. Wave attenuation is also modulated by meadow biometry, and by water levels and currents.Whereas currents are strong and strongly influenced by wind and wind waves above the meadow, a transition canopy-water layer dissipates waves and currents. In the canopy, currents are thus attenuated.The meadow is not just a passive element in the overall sediment dynamics since it reduces energy and thus modifies substrate changes within and in the back of the meadow, thus protecting the shoreline. However, it is the recurrence of strong wind that seems to drive sedimentary changes. The strong interactions between the meadow and the hydrodynamic and sedimentary processes could limit the extension of the meadow in areas more exposed to waves.
114

Léčebna se speleoterapií Ostrov u Macochy / Sanatorium with Speleotherapy Ostrov u Macochy

Hendrych, Pavel January 2016 (has links)
The diploma project proposes The Children´s Sanatorium with Speleotherapy Ostrov u Macochy which is to take place in the Císařská Cave. Site is located close to the mentioned cave in an exposed natural environment adjacent by urban housing which is represented by dispersed detached houses. An ambition of project is connecting an existing down-entrance to Císařská Cave with design new up-entrance, building of speleotherapy and existing development. There is created a new interconnection which respects and supports a local morphology. The building is situated on the end of connector in direct continuity with existing roads and development which suitably complements because of architecture form based on an archetyp of traditional cottage. The complex offers services for rehabilitation, sanatorium, accommodation and sports for childrens clients and general public too. A project intention was an effort to maximize incorporation the volume to feature of town, townscape with gabled roofs and natural surroundings with preservation high users comfort.
115

Škola, základ života - Soubor školských staveb v Ostravě na Černé louce / School, the Foundation of Life – a Complex of Educational Buildings in Ostrava, Cerna louka

Kyšková, Anna January 2014 (has links)
A proposal of complex of school reacts to current situation of the Black Meadow as well as it respects the winning proposal of Maxwan (competition held in 2010). Block of school completes missing block on the edge of old town and Black meadow currently serving as parking place. Kindergarten fills in a vacant lot nearby.
116

Quantitative Ecological and Taphonomic Patterns in Late Cenozoic Mollusk-Dominated Marine Fossil Assemblages

Barbour Wood, Susan L. 27 June 2006 (has links)
Applications in paleontological research are far from being limited to taxonomic collection and identification. Nor is such research limited to working solely on fossil data. Actualistic paleontology is the study of modern or recent organisms and processes to better understand those of the past. The bulk of this body of research falls under the category of actualistic paleontology, and examines geochronological methods and error biases in dating biological specimens ranging in age from modern to thousands of years old. Although such methods are arguably not perfect, error rates of ± a few hundred to few thousand years can be extremely important when considering ecological relationships among both Holocene taxa and time-averaged paleocommunities, but quite diminished when considering implications on more traditional dating techniques for ancient strata. Regardless, understanding implications of time resolution is important in analyses of and comparisons between any biological dataset. The following chapters are united by quantitative and statistical management of data with varying levels of temporal resolution, and represent four manuscripts that either are in press or soon to be submitted for publication. / Ph. D.
117

Research on heavy metals in roadside and evaluation of heir influence on the environment / Sunkiųjų metalų pakelėse tyrimai ir įtakos aplinkai vertinimas

Jankaitė, Audronė 04 December 2007 (has links)
Soil contamination with heavy metals is a problem of worldwide concern that is still unsolved. The analysis of the current methods of soil cleaning from heavy metals leads to conclusions that phytoremediation, i.e. soil decontamination by using plants, is one of the best methods. Although this method has not received a wide application yet and possibilities of its application are still being analysed, it is one of the most prospective soil cleaning methods due to low cost and a rather efficient cleaning of the upper surface of soil. Three kinds of Poaceae f. Species – Lolium perenne L., Poa pratensis L. and Festuca pratensis Huds. – have been chosen in this work for decontaminating soil from heavy metals. These plants were grown under artificial laboratory conditions in soil which was once and periodically contaminated with heavy metals. It was established that it is the Lolium perenne L. that most efficiently removes heavy metals and cleans soil. The results of experiments show that the selected grassy plants (perennial ryegrass, meadow-grass and fescue-grass) efficiently clean soil from heavy metals (copper, lead, manganese, zinc, nickel and chromium) when soil contains both low (0.5–120 mg/kg) and high (up to 6,850 mg/kg) concentrations of these metals. Since the perennial ryegrass absorbs the highest amount of heavy metals, the highest efficiency of soil cleaning is achieved using this plant, therefore, 80 % of the mixture of grassy plants was formed of the perennial... [to full text] / Dirvožemio tarša sunkiaisiais metalais visame pasaulyje aktuali problema iki šiol neturinti universalaus sprendimo. Išanalizavus šiuo metu dirvožemio valymui nuo sunkiųjų metalų naudojamus metodus, galima daryti išvadą, kad vienas iš tinkamiausių metodų yra fitoremediacija, t. y. dirvožemio valymas nuo teršalų panaudojant augalus. Šis metodas dar nėra plačiai taikomas ir jo taikymo galimybės dar tik tiriamos tačiau, tai vienas iš perspektyviausių dirvožemio valymo metodų dėl sąlyginai mažos kainos ir pakankamai efektyvaus paviršinio dirvožemio sluoksnio išvalymo. Atliktų eksperimentinių tyrimų rezultatai parodė, kad pasirinkta žolinė augalija – daugiametė svidrė, pievinė miglė ir tikrasis eraičinas efektyviai valo dirvožemį nuo sunkiųjų metalų (vario, švino, mangano, cinko, nikelio, chromo) tiek esant mažoms (0,5–120 mg/kg), tiek didelėms (iki 6850 mg/kg) jų koncentracijoms dirvožemyje. Kadangi daugiausiai sunkiųjų metalų iš dirvožemio sorbuoja svidrė, tai dirvožemio valymo efektyvumas naudojant šią žolinės augalijos rūšį yra efektyviausias ir sudarant žolinės augalijos mišinį 80  sudarė svidrė ir po 10  eraičinas bei miglė. Eksperimentų metu tirta, kaip sunkiųjų metalų mišinio koncentracijos kenkia hidrobiontams ir nustatyta, kad didinat sunkiųjų metalų mišinio koncentracijas (iki 0,198–5,12 g/l) jos tampa letalinėmis vaivorykštiniam upėtakiui, tuo pačiu ir kitiems vandens gyvūnams.Pagal tyrimų su vaivorykštiniais upėtakiais rezultatus nustatyta, kad stebimų... [toliau žr. visą tekstą]
118

Sunkiųjų metalų pakelėse tyrimai ir įtakos aplinkai vertinimas / Research on heavy metals in roadside and evaluation of their influence on the environment

Jankaitė, Audronė 04 December 2007 (has links)
Dirvožemio tarša sunkiaisiais metalais visame pasaulyje aktuali problema iki šiol neturinti universalaus sprendimo. Fitoremediacija – naujai atsirandanti ir daug žadanti technologija nestipriai užterštiems dirvožemiams valyti naudojant augalus. Šiame darbe dirvožemio valymui nuo sunkiųjų metalų pasirinktos trys žolinės augalijos rūšys – svidrė, miglė ir eraičinas, augintos modelinėmis laboratorinėmis sąlygomis vieną kartą ir periodiškai sunkiaisiais metalais teršiamuose dirvožemiuose. Nustatyta, kad geriausiai sunkiuosius metalus iš dirvožemio sorbuoja ir didžiausias dirvožemio valymo efektyvumas pasiekiamas naudojant svidrę. Augalijai sorbuojant sunkiuosius metalus iš dirvožemio dalis šių metalų (Cu, Cr, Zn, Pb, Mn, Ni) koncentruojasi žolinės augalijos šaknyse, tačiau didžioji dalis ten susikaupiančių metalų (iki 90 proc.) pereina į antžeminę augalo dalį. Didžiausios sunkiųjų metalų koncentracijos augale (iki 60 proc. ir daugiau) ir atitinkamai efektyviausias dirvožemio valymas nustatytas svidrės atveju, todėl sudarant mišinį didžiąją dalį (80 proc.) jame sudaro svidrė. Sunkiųjų metalų mišinys daro neigiamą įtaką vaivorykštinio upėtakio jauniklių fiziologiniams ir morfologiniams rodikliams, todėl didinat sunkiųjų metalų mišinio koncentracijas (iki 0,198–5,12 g/l) jos tampa letalinėmis vaivorykštiniams upėtakiams, tuo pačiu ir kitiems vandens gyvūnams. Pagal tyrimų su vaivorykštiniais upėtakiais rezultatus nustatyta, kad stebimų upėtakių, gyvenusių akvariume, užterštame 5,7... [toliau žr. visą tekstą] / Soil contamination with heavy metals is a problem of worldwide concern that is still unsolved. The analysis of the current methods of soil cleaning from heavy metals leads to conclusions that phytoremediation, i.e. soil decontamination by using plants, is one of the best methods. Although this method has not received a wide application yet and possibilities of its application are still being analysed, it is one of the most prospective soil cleaning methods due to low cost and a rather efficient cleaning of the upper surface of soil. Three kinds of Poaceae f. Species – Lolium perenne L., Poa pratensis L. and Festuca pratensis Huds. – have been chosen in this work for decontaminating soil from heavy metals. These plants were grown under artificial laboratory conditions in soil which was once and periodically contaminated with heavy metals. It was established that it is the Lolium perenne L. that most efficiently removes heavy metals and cleans soil. The results of experiments show that the selected grassy plants (perennial ryegrass, meadow-grass and fescue-grass) efficiently clean soil from heavy metals (copper, lead, manganese, zinc, nickel and chromium) when soil contains both low (0.5–120 mg/kg) and high (up to 6,850 mg/kg) concentrations of these metals. Since the perennial ryegrass absorbs the highest amount of heavy metals, the highest efficiency of soil cleaning is achieved using this plant, therefore, 80 % of the mixture of grassy plants was formed of the perennial... [to full text]
119

Plant-herbivore interactions across an alpine meadow gradient

Illerbrun, Kurt K Unknown Date
No description available.
120

Škola, základ života - Soubor školských staveb v Ostravě na Černé louce / School, the Foundation of Life – a Complex of Educational Buildings in Ostrava, Cerna louka

Chroustová, Andrea January 2014 (has links)
The goal of diploma thesis was design of educational building complex in Ostrava, Černá louka. Design is divided into two buildings- the main building(primary and secondary school) and kindergarden building. Main entrance into the complex is oriented to the catchment area - new living in Nová Karolina. Subsidence of the Kindergarten object creates landscaped space in front of schools. The green belt for sport and recreation was preserved along the river. Form the main object corresponds with the surrounding buildings - closed block with an inner atrium. The block opens and decreases towards the river, as well as kindergarten object. The facade of the building is special architectural concrete with the ability to clean the air - pierced around the windows. Gllass is used towards atrium and the river. Colours facade is enlivened by yellow surfaces lining by the windows, for common areas are used flat glass glossy green panels. Operation of the main building is divided into 4 units. Primary school is oriented towards the river and it is typical for square classrooms and a large corridor. Secondary school, coupled with the high school is located in 2nd and 3rd floor in the atrium arrangement of corridors with classrooms. Next part is gymnasium oriented to the Černá louka. Facilities of the school is located in the 1st floor. The dominant element is spatially banked dining room that opens into the atrium.

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