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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.
321

Meteorologická měření / Weather measurement

Chovanec, Jan January 2008 (has links)
The achievement of this thesis is to design functional equipment which is able to measure the basic meteorological variables as air temperature, humidity and barometric pressure. In order to measure relative humidity completed with temperature, an intelligent sensor manufactured by Intersema Inc., MS5534B, was chosen. Relative humidity is measured by a capacitance sensor Humirel HS1101LF. The measured data are stored in anon-volatile memory. Data can be downloaded to a computer file via serial port or they can be online displayed on the computer screen via the wireless Bluetooth connection. Because the equipment is supposed to be used for the external measurement without the connection to electricity, low power consumption was considered as a most important parameter as well as good weather protection.
322

Maticov zobrazovac­ jednotka / Matrix display

Gbik, Matej January 2015 (has links)
The aim of this thesis is to implement autonomous information portal using matrix display BUSE BS210. The first part deals with the theoretical problem-solving and management options display. The second part is dedicated to the development of necessary hardware and the last part is the software described herein microcontroller and microcomputer Raspberry Pi.
323

Mikroklima shromažďovacích prostorů / Indoor environment in assembly halls

Janeček, Tomáš January 2013 (has links)
This thesis is concerned with the creation of indoor air and requirements on it, describes the components of the internal environment, in particular the formation of carbon dioxide and its properties. It also deals with the experimental measurement of the concentration of carbon dioxide in the classrooms and the subsequent evaluation according to the valid legal regulations. In the last part, I dealt with a proposal for the creation of internal systems that are specified by the building.
324

Vzduchotechnika pro technologické čisté prostory / Air conditioning in Cleanrooms for Technology

Adamec, Jan January 2014 (has links)
The main objective of this thesis is to propose and evaluate two variants of HVAC systems for clean rooms. The proposed system is pressurized. As part of the experimental section in which the data obtained are evaluated - humidity and air temperature.
325

Optimalizace vnitřního prostředí historické místnosti / Optimization of indoor climate in a historical room

Vaňková, Klára January 2016 (has links)
Diploma thesis solves an indoor climate specializing to historical buildings. The thesis is devided to three parts. First part contains The experiment in historical rooms took place at Austerlitz chaetau. Humidity and temperature was mesuared and the impact of these two parametres was evaluated according to chosen methodic. Diploma thesis sol-ves optimalization of internal microclimate of these two rooms. Two types of heating are designed in accordance with technical standards. These types are evaluated according to different criterions and the best type of heating is chosen – infraheating.
326

Energetické hodnocení budovy pro občanskou vybavenost obce / Energy evaluation of building for public facilities

Procházková, Adéla January 2016 (has links)
The aim of thesis is the energy evaluation of building for public facilities - kindergarten. From the beginning work deals with the analysis of a given topic, standard and legal regulations associated with the topic. This knowledge is further applied to a specific building. It follows by evaluation of the current state of the building, its systems, internal environment and analysis of measures leading to energy savings and ensuring the quality of the indoor environment of building. Work also deals with experimental measurements of selected parameters of the internal environment.
327

Datalogger pro stavební konstrukce / Datalogger or building constructions

Štábl, Martin January 2017 (has links)
This work deal with developing dedicated autonomous device for data collection. The work describes the approaches how to design that. Solve choosing of the sensor taking into his properties for this device. And regard on the comparison with similar devices on market according behavior and function. General concept of the suggested datalogger. The thesis contains hardware and software equipment of this device.
328

Snímač kondenzované vlhkosti / Sensor of condensed moisture

Krejčí, Jakub January 2017 (has links)
This master thesis deals with measuring condensed moisture in constructions using measuring moisture porosity material. Market research was performed and were made sensors own construction based on capacity principle and their attributes were measured. In this thesis is also described method, which is used for calibration for conditions in building constructions causing condensation of water.
329

Preterm Infant Incubator Humidity Levels: A Systematic Review

Glass, Laurie 01 January 2019 (has links)
Numerous scholars have reported that inconsistent incubator humidity in the neonatal intensive care unit (NICU) requires attention. Evidence synthesis was needed to assist the identification of optimal incubator humidity levels and duration to decrease transepidermal water loss (TEWL) and the potential for infection. The purpose of this doctoral project was to appraise and synthesize the evidence of preterm outcomes related to incubator humidity. The practice-focused question addressed what patient outcomes were impacted by incubator humidity level and duration in premature infants < 32 0/7 weeks cared for in the NICU. The foundation of this project was the Joanna Briggs Institute method for systematic reviews. Mefford’s theory of health promotion for the preterm infant was used to address the wholeness of the preterm infant’s body system. Evidence was classified using the Johns Hopkins evidence-based practice levels and quality of evidence. The search was conducted in 8 databases, and citation searching was used to identify 340 articles, 12 of which met the inclusion criteria. The evidence demonstrates that the practice of incubator humidity is warranted; however, it does not come without risks. Microbial growth was increased in high levels of incubator humidity. Unnecessary TEWL was prevented by lowering high levels of incubator humidity after the 1st week, improving skin barrier formation. Incubator humidity of 60%–70% in the 1st week was effective in preventing TEWL in infants born ≥ 26 weeks; however, future research is needed for infants < 26 weeks. When optimal levels and duration of incubator humidity are achieved, positive social change will occur from the improved outcomes of the smallest neonatal patients.
330

Ångpermabilitet för skaltyger : Ett utredande arbete mellan två testmetoder

Persson, Isabelle January 2018 (has links)
Denna rapport beskriver det utredande arbetet som genomförts på en nytestmöjlighet för membrantygers ångpermeabilitet som skapats påMittuniversitetet. Ångpermeabilitet innebär ett materials förmåga att släppa igenomfukt. Denna nya testrigg kan simulera mer verkliga förhållanden (temperatur ochluftfuktighet) än vad den testmetod som utförts tidigare på Mittuniversitetet enligten ISO-standard för ångpermeabiliteten kan simulera. Syftet med arbetet var attgenomföra tester på den nya testriggen och få en förståelse för yttertygernaspåverkan på membranet samt utvärdera resultatet mot ISO-standardtestet förångpermeabiliteten för att se om dessa resultat skiljer sig åt. Vidare har fyra olikaunderklädestyger testats med målet att kunna utvärdera deras påverkan påmembrantyget. Målet med detta projekt var att genomföra dessa tester samt attutvärdera resultatet och materialens egenskaper.Inledningen av projektet gav grundläggande kunskap om skalplagg, membraneroch andra aktuella material och denna kunskap var värdefull för att sedan kunnautvärdera resultaten som gavs. Förstudien följdes sedan av en planeringsfas avvilka tester som skulle utföras och slutligen ett genomförande av två olikatestomgångar i den nya testriggen samt en testomgång enligt ISO-standardtestet.Ett luftpermeabilitetstest genomfördes också som ytterligare en faktor för attutvärdera olika egenskaper på underklädestygerna. Resultaten från samtliga testerberäknades och analyserades för att nå slutsatser om samtliga material och vad sompåverkar dem.Resultatanalysen visade att membrantygerna inte fungerar på samma sätt när denyttre och inre temperaturen förändras och resultatet från den nya testriggen gav intesamma resultat som ISO-standardtestet. Resultatet från testerna medunderklädestygerna var svårare att analysera och där hade en större bredd på deolika materialen samt en annan placering av testsensorer behövts för att eventuelltkunna göra en bättre utvärdering.Syftet och målet med detta projekts uppnåddes och en utvärdering av de testadematerialen samt testmetoderna har kunnat genomföras. / This report describes the investigative work carried out on a new test opportunitythat measures the water vapor permeability of textiles for the purpose of qualitycontrol. Water vapor permeability is a garments ability of transfer moisture. Thisnew test rig, established by Mid Sweden University, can simulate conditions thatresemble more like the actual use of shell garments, compared with the ISO-standard test for water vapor permeability used in Mid Sweden University today.The purpose with the project was to perform tests on the new test rig and comparethe outer fabric´s impact on the membrane as well as evaluate and compare theresults from the ISO-standard test. Furthermore have four different base layerfabrics been tested with the goal of being able to evaluate their impact on themembrane fabric. The goal of this project was to carry out these tests as well asevaluate the results and the properties of the materials.The introduction of the project gave basic knowledge of shell garments,membranes and other different materials and this knowledge was valuable for laterevaluation of the given results. The study was then followed by a planning of thetest that was to be carried out and finally an implementation of two different testrounds in the new test rig and one test round in the ISO-standard test. A test for thedetermination of the permeability of fabrics to air was also carried out as anotherfactor to evaluate different characteristics of the base layers. The results from alltests was analyzed and evaluated to reach conclusions about all materials and whataffects them.The result showed that the membrane fabrics does not work at the same way whenthe ambient and the internal temperature changes. Also, the result from the new testrig was not the same as the result from the ISO-standard test. The result from thetest with the base layers was more difficult to analyze and a greater width of thematerials and also another location of the sensors perhaps would make it easier toanalyze.The purpose and goal with this project have been achieved and analyses have beencompleted. / <p>Betyg 191104</p>

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