• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 476
  • 27
  • 20
  • Tagged with
  • 523
  • 363
  • 82
  • 76
  • 58
  • 50
  • 50
  • 48
  • 44
  • 44
  • 44
  • 38
  • 35
  • 35
  • 34
  • 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.
121

Hydrogeologie Skorkovského a Sojovického jímacího řadu na základě nových údajů z vrtů / Hydrogeology of Skorkov and Sojovice waterworks based on data from new water wells

Rybářová, Magdalena January 2015 (has links)
The Riverbank Filtration (RBF) water supply system Karany has been affected by increasing NO3- concentrations during recent decades. This thesis deals with flow and chemical composition of groundwater in Skorkov and Sojovice RBF systems, which are the most problematic ones according to their quality in long term. Twelve new groundwater wells (V1- V12) were drilled in study area in 2013. Data derived from the wells were used to improve the conceptual hdrogeological model of the area and I tried to specify information about the origin of nitrate pollution. The Groundwater level logging showed hydraulic connection between the river and the wells situated up to 130 m faraway from the river (V1, V2 andV10), which were also demonstrated by the short- term temperature fluctuations caused by fast penetration of surface water from The Jizera River during higher flow rate to wells. I compiled geological sections which show the geometry of The Quaternary fluvial deposits and groundwater level. The chemical analysis of groundwater showed that it is not possible to differentiate groundwater from the shallow part of The Cretaceous aquifer from the aquifer of fluvial deposits by major chemical components. The result of infiltration experiments showed higher permeability in the environment with grass cover (kv=...
122

Řeka. Výtvarný projekt pro 1. stupeň ZŠ.\nl (teoreticko - projektová práce) / The River. The Art Project for 1st grade of Elementary School. (theoretical - project thesis)

BEDNÁŘOVÁ, Nikola January 2019 (has links)
The presented theoretical and project diploma thesis was aimed at developing an art project "RIVER", during the Art Education lessons in the first level of elementary school. It is structured in two parts, a theoretical and practical one. The theoretical part defines the terms and processes available literature on the topic. The project part of the thesis consists of ten proposed art lessons and also deals with the documentation, implementation and reflection of the proposed methodological sheets. The diploma thesis is followed with pictorial annexes related to the theoretical part, photo documentation of lessons and proposed structured preparation.
123

The Middle East Conflict on Water Resources / Problematika vodních zdrojů v oblasti Blízkého východu

Müller, Vojtěch January 2010 (has links)
The aim of this diploma thesis is to capture the Middle East conflict from a new perspective. In this regard, the conflict analysis works with two new factors: lack of water resources in the region and the effect this situation has on the regional actors to initiate an open war conflict. As an introduction to the topic, the first chapter discusses water resources in the context of international relations. The general findings of the first chapter are then applied to the specific situation in the Middle East region. In particular, the second chapter depicts the role of water resources throughout Arab-Israeli conflicts that later serves as a basis for the analysis of the conflicts at the end of the chapter. Finally, the last chapter seeks to pinpoint some actual conditions and technological capabilities that could secure the efficient and regular supply of water resources in the region.
124

Formy hliníku v acidifikovaných povrchových vodách - toxicita a trendy / Al forms in acidified surface waters - toxicity and trends

Šimková, Petra January 2012 (has links)
This thesis deals with forms of aluminium occurring in acidified surface waters. Special attention is paid to inorganic monomeric aluminium, fraction, which has toxic effect on some species of aquatic and terrestrial biota. The thesis primarily focuses on the analysis of surface water, groundwater and soil water chemistry in the year-round and long-term monitoring. The practical took place on an experimental mountain basin Uhlířská, which is drained by river Černá Nisa. Uhlířská basin is located in the Jizera Mountains and represents the area which was significantly exposed to the acid atmospheric deposition in the second half of the 20th century. Long-term exposure to acid precipitation caused the acidification of soil and watercourses, forest degradation and deforestation of large parts of the basin. Decrease in pH and an increase in concentration of toxic aluminium also caused species depletion of aquatic ecosystems. Monomeric forms of aluminium were determined spectrophotometrically, the concentration of total aluminium was determined by the method of flame atomic absorption spectrometry (FAAS), in case of low concentration electrothermal atomic absorption spectrometry (ETAAS) was used. Five forms of aluminium were obtained - Altot, AlAS, Alm, Alo and potentially toxic Ali. Appart from...
125

Dřevěný rodinný dům s upravitelným přízemím pro osoby s omezenou schopností pohybu

Horáček, Jiří January 2014 (has links)
The task of the thesis is to develop the necessary technical documentation for the implementation of the wooden house. In the first part is made a general overview on the construction of wooden buildings and design of consturction layers. Furthermore, we present data describing of using the rainwater in buildings, construction of green roofs and there is also outlined the problems of static structural analysis. The main part of the work is focused on making the documentation of a particular house, especially the election of the structural design. Design of wall layers, ceiling layers and detailed solutions. The conclusion is devoted to a summary and evaluation of the theases. Thesis is accompanied by the production house documentation solved. In the attached is a static protocol dokument of house and roof.
126

Zpracování revitalizační studie pro malou vodní nádrž / Revitalization study for small water reservoir

POSLUŠNÝ, Marek January 2015 (has links)
This Diploma Thesis deals with small water reservoirs as significant landscape elements, that have the essential influence on preservation or increase of generic diversity of the whole territory. In a specific example of the proposal of restoration of a small water reservoirs the pond Panský in the cadastral area of Lhota by Kamenice nad Lipou is presented the suitable way of approach to original, natural functions of this minor dam considering the interest of the owner, who uses the pond for semiintense fish farming.
127

Lesní studánky - sledování vybraných pramenů ve správě Lesů města Brna v severní části okresu Brno-venkov

Borunská, Lucie January 2015 (has links)
This diploma thesis deals with the monitoring of selected headsprings in the administration of the Lesy města Brna in the northern district of Brno-venkov, describing their current state and proposals for their reconstruction. The basis of the work was to measure the basic parameters of water quality - water temperature, pH, saturation of oxygen and yield measurements of water sources, taking samples for laboratory analysis. Based of measured values there were compiled charts and graphs, and the water quality evaluation of individual headspring. The most important part of this work is to design the general reconstruction of one of the monitored headsprings and suggestions of installation of benches and information boards, there are alsodrawing annexes of the individual proposals and map annexes.
128

Sledování pramenných vývěrů ve správě Lesů města Brna v severní části okresu Brno-venkov

Stehnová, Ema January 2015 (has links)
The thesis engages in mapping water springs and design modifications of springs in the northern part of district Brno-venkov in management of Lesy města Brna, a.s. The goal of the thesis was annual monitoring of natural springs, periodic monthly measurement of the spring intensity, water temperature, pH and content of oxygen. And last but not least making complete laboratory analyzes which indicate quality of water. The results were processed by graphs and tables and they were compared with Regulation no. 252/2004 Sb., which determines hygienic demands on potable water. The thesis contains textual delineation of modifications of monitoring spings. The spring called V Hájku there is designed total renovation. The detailed technical depiction of construction of spring and layout the spring to surroundings. The next goal was designed informational table with exact graphic and textual shape.
129

Projektová a problémová výuka tématického okruhu Rozmanitost přírody na I. stupni ZŠ / Project and problem teaching thematic area Diversity of Nature in the 1st Degree of Elementary School

ČECHOVÁ, Lenka January 2016 (has links)
The aim of this thesis is to develop its own concept of learning material dedicated to teaching diversity of nature at first level of primary schools using principles of project teaching and teaching opportunities beyond elementary school. The proposed educational material is created in the form of a methodological manual that contains worksheets for proposed projects in the field of diversity of nature. That means a guidebook for teachers that is designed as an assistant for work with the proposed projects. There is also available an instructional text so that it corresponds with principles defined by the applicable educational documents. The theoretical part of this thesis focuses on evaluation of the importance of this work in the context of FEP and SEP monitored schools. Other chapters are devoted to a functional analysis of textbooks and workbooks for the first level of basic evaluation that emphasises the importance of project teaching during teaching elementary science, natural science and geography.
130

Stav a vývoj koncentrací nutrientů (dusík a fosfor) v podzemních vodách zájmového území / Concentrations of nutrients (nitrogen and phosphorus) and its development in groundwater of the selected area

PETRÁŠKOVÁ, Kateřina January 2015 (has links)
This diploma thesis deals with the comparison of the development of nitrates and phosphates in various regions of the Czech Republic. The thesis contains of the description of the circulation of groundwater and its importance to the human society, the circulation of nitrogen and phosphorus and their occurrence in waters. Further, this thesis incorporates the description of the development and the way of observation of the concentration of nitrates and phosphates in groundwater. The selection of observational objects and used methods for the evaluation of the concentrations are described in the thesis. The aim of the thesis is the determination of trends of the concentrations of nitrates and phosphates during time periods and the statistical evaluation of the progress of the concentrations in regional cities of the Czech Republic. The next part of the thesis deals with the spatial analysis of the concentrations of nitrates and phosphates in the region of České Budějovice. This area was chosen for its great amount of the observational objects with a long time period of measuring.

Page generated in 0.0249 seconds