Revitalization of River

Bakalárska práca sa zaoberá revitalizáciou vybraného úseku na vodnom toku Svitava. Práca je rozdelená do 4 kapitol. Prvá sa zaoberá zhodnotením súčasného stavu toku a popísaním všeobecných charakteristík. Druhá časť sa zaoberá popisom technických charakteristík toku, prehľadom možných revitalizačných zásahov a vlastným návrhom revitalizačných úprav a vegetačného doprovodu v konkrétnom úseku. Tretia kapitola obsahuje hydraulický výpočet prúdenia cez súčasné koryto pomocou programu HEC-RAS. Obsahom poslednej časti bakalárskej práce je výkresová dokumentácia súčasného stavu a návrhov revitalizačných úprav.The bachelor thesis deals with restoration of selected reach on the river Svitava. The work consists of 4 chapters. The first part is dealing with the assessment of the current state of river reach and describing general characteristics. The second level describes technical characteristics, reviews possible restoration interventions, proposed restoration interventions on specific reach and vegetation belt along. The third chapter consists of calculations of steady flow run by computer program HEC-RAS. The last part contains drawings documentation of current state and proposed restoration interventions.

Revitalization branch of the river Vah

Diplomová práca sa zaoberá revitalizáciou mŕtveho ramena rieky Váh, ktoré čelí problémom kolísajúcej hladiny, nevhodných podmienok pre rybiu populáciu a nedostatočnej kapacity pre odber do priľahlého rybníka. Súčasťou práce je popis všeobecných charakteristík územia a súčasný stav ramena, nasleduje návrh úprav a technického objektu na vtoku do ramena a hydrotechnické výpočty týkajúce sa technického objektu, výkopových prác a doby vyprázdnenia ramena.The diploma thesis deals with restoration of dead-end meander of the Váh river, which is facing problems with fluctuating water level, inappropriate conditions for fish population and insufficient capacity for water withdrawal to adjacent pond. The thesis consists of description of general characteristics of the area and current state of the dead-end meander, followed by the design of modifications within the meander and technical object at the inlet and hydrotechnical calculations concerning the technical object, excavation works and the time of emptying the meander.

In vivo validation of the electronic depth control probes.

In this article, we evaluated the electrophysiological performance of a novel, high-complexity silicon probe array. This brain-implantable probe implements a dynamically reconfigurable voltage-recording device, coordinating large numbers of electronically switchable recording sites, referred to as electronic depth control (EDC). Our results show the potential of the EDC devices to record good-quality local field potentials, and single- and multiple-unit activities in cortical regions during pharmacologically induced cortical slow wave activity in an animal model

Data-Driven System Dynamics Model for Simulating Water Quantity and Quality in Peri-Urban Streams

Holistic water quality models to support decision-making in lowland catchments with competing stakeholder perspectives are still limited. To address this gap, an integrated system dynamics model for water quantity and quality (including stream temperature, dissolved oxygen, and macronutrients) was developed. Adaptable plug-n-play modules handle the complexity (sources, pathways) related to both urban and agricultural/natural land-use features. The model was applied in a data-rich catchment to uncover key insights into the dynamics governing water quality in a peri-urban stream. Performance indicators demonstrate the model successfully captured key water quantity/quality variations and interactions (with, e.g., Nash-Sutcliff Efficiency ranging from very good to satisfactory). Model simulation and sensitivity results could then highlight the influence of stream temperature variations and enhanced heterotrophic respiration in summer, causing low dissolved oxygen levels and potentially affecting ecological quality. Probabilistic uncertainty results combined with a rich dataset show high potential for ammonium uptake in the macrophyte-dominated reach. The results further suggest phosphorus remobilization from streambed sediment could become an important diffuse nutrient source should other sources (e.g., urban effluents) be mitigated. These findings are especially important for the design of green transition solutions, where single-objective management strategies may negatively impact aquatic ecosystems

Novel Strategy for the Synthesis of Ultra‐Stable Single‐Site Mo‐ZSM‐5 Zeolite Nanocrystals

International audienceThe current energy transition presents many technological challenges, such as the development of highly stable catalysts. Herein, we report a novel "top-down" synthesis approach for preparation of a single-site Mo-containing nanosized ZSM-5 zeolite possessing atomically dispersed framework-molybdenum homogenously distributed through the zeolite crystals. The introduction of Mo heals most of the native point defects in the zeolite structure resulting in an extremely stable material. The important features of this single-site Mo-containing ZSM-5 zeolite are provided by an in-depth spectroscopic and microscopic analysis. The material demonstrates superior thermal (up to 1000 °C), hydrothermal (steaming), and catalytic (converting methane to hydrogen and higher hydrocarbons) stability, maintaining the atomically disperse Mo, structural integrity of the zeolite, and preventing the formation of silanols