The aim of my thesis is to become familiar with LED replacements of light sources, possible problems, advantages and disadvantages. In the work are at first explained terms of light technology. Then are concisely described actual light sources, that can be replaced by LED. That concern: classic bulbs, halogen bulbs, linear fluorescents and compact bulbs. After that is described principle of LED light fittings and advantages, disadvantages nowadays to use LED light fittings. The main emphasis is placed on chapter 5. The compensations of linear fluorescents by LED moduls. The following chapters are dedicated to comparison of fluorescent lamps and LED moduls. Involving-photometrics parameters, luminous intensity, lumniance analysis and also economics comparison of lighting systems with fluorescent lamps versus the LED moduls.

This paper discuss the design and realisation of intelligent lighting system for home automation. Identifying the most adequate solution of system implementation is followed by choosing suitable components, design of electrical circuits and printed circuit boards. The project then deals with development of software for each particular device in the system and development of computer application for managing the system. The paper also treats with mechanical design and construction of devices in the system.

Self-management support (SMS) is considered an effective approach to chronic pain (CP) management. However, the provision of SMS for chronic pain patients faces challenges within primary care facilities in Ontario. An innovative SMS program led by a Registered Nurse (RN) at the Bruyère Family Health Team in Ottawa has been created for chronic pain patients. The goal of this program is to improve the current chronic pain management using SMS in an outpatient facility by harnessing the skills of primary health care team members. The hope would be that this program could be spread and scaled across other programs in the region. This thesis exists in two parts: 1. Evaluate the RN-led chronic pain self-management program to determine its effectiveness in terms of self-reported pain scales and Morphine Equivalence Quotient (MEQ) 2. Understand the perspectives of health care practitioners, administrators and patients within the RN-led chronic pain self-management program Patients meet with the RN for initial face-to-face visit for an hour, for SMS and then for at least one follow up visit. The primary outcome variables of interest were their self-reported pain evaluated using validated pain scales. Opioid use was also assessed before and after the porgram based on the MEQ. Results were analyzed using SPSSversion20. An online questionnair was distributed to team members. All responses were conceptually arranged into a SWOT analysis, which will be directed toward the ongoing management needs of the clinic. Between January 2016 and August 2018, 125 patients were seen of these 58 patients (12 males and 46 females) had at least one follow up appointment with the RN. In 46.2% of the population there was a decrease in their total opioid dose from their first to their last appointment and of these 4 patients (15.4%) had a daily MEQ of 0 by their last appointment. There was a significant average difference between patient’s daily MEQs at their first and last appointment (t20= 2.245, p<0.05). On average patients came into their first appointment with a daily MEQ of 23.88 higher than at their last visit (95% CI [1.69, 46.07]). Staff and patients who participated in the online survey identified the following strengths: multidisciplinary approach, increased accessibility for patients, cost effectiveness, better patient engagement, and no refills of opioids Canada needs a better strategy to manage the CP epidemic. This chronic pain self-management program led by an RN focuses on a multidisciplinary approach that is readily accessible to patients and integrated within primary care to best meet and prioritize the needs of chronic pain patients.

This Diploma thesis contains information about cryomaceration and using of dry ice in wine technology. Base on that we could compare differences in basic wine parameters or amount of fenolic and sensoric contrasts in mature wines. In theoretical part of this thesis are describe principles of cold maceration or cryomaceration, but main focus was on maceration method with dry ice. In next part we oriented on calculating total costs and usefulness of dry ice. Final part is all about maceration and squeezing of blue grapes. In the beginning of experimental part is described variety Frankovka in general, which was used to this experiments. In following article is explained how the experiment was handled, what practices were used for it and why I chose analytic and sensoric method for this experiment. In Final part are presented graphs, results, conclusions we made in this experiment.

Final thesis was worked out on theme Study of light sources for in vitro cultivation of the rootstock Gisela 5. Experiment was conducted alternately on Mendeleum Institute of Genetics and Plant breeding, Faculty of Horticulture in Lednice and on Fosfa a.s. company in Břeclav. The aim of this thesis was to expand knowledge about light sources and their influence on in vitro plant cultivation. Based on this information and knowledge, an experiment was then made to investigate the impact of three different LED light sources on in vitro cultivation of the rootstock Gisela 5 in the phase of multiplication and rooting.

No description available.

No description available.

Since the AlGaInN alloy has a continuous direct bandgap from about 0.7 eV (InN) to 6.2 eV (AlN), nitride-based materials can cover most of the electromag netic spectrum from near-infrared to ultraviolet. Based on this feature, nitride based light-emitting diode (LED) devices have been widely used. With the first commercialization of blue LED devices in 1993, the LED industry became more and more important in the field of lighting. As a typical light-emitting material, LED devices are not only determined by their own components, but also their luminous efficiency is one of the focuses of attention. Generally speaking, the standard for measuring the luminous efficiency of LED devices is the ratio of the number of injected carriers to the number of emitted photons, that is, the external quantum efficiency (EQE). In order to obtain a higher EQE, it can be improved from three aspects, namely internal quantum efficiency (IQE), light extraction ef ficiency (LEE) and injection efficiency (IE). However, since LED devices are often grown by vapor phase epitaxy, the epitaxial growth substrate often absorbs the light emitted by the LED device, thereby reducing the EQE of the entire device and affecting the luminous efficiency. Especially as the light-emitting wavelength of LEDs becomes longer and longer, the EQE of LED devices tends to drop from more than 80% to 4% or even lower (the decline of red LEDs will be more signif icant). At the same time, as the size of LED devices decreases, the proportion of damage caused by the mesa etching process and the surface recombination area of devices (such as Micro LED devices) increases accordingly, and EQE will also show a clear downward trend. Therefore, in addition to further improving EQE through internal quantum efficiency, increasing LEE as much as possible through structural changes is also a key point to improve EQE. In our study, based on our group’s own grown red LEDs, we successfully transferred structured vertical InGaN red LEDs from Si(111) substrates to new substrates, achieving further improvements in LEE. At the same time, it also provides options for applying this technology to LED devices and micro-LED devices of various wavelengths in the future. The LED device with the vertical structure has a low turn-on work ing voltage and a small series resistance. The whole process adopts dry etching technology, which makes the process more precise and reliable. Compared to standard LED devices, the operating voltage and series resistance of LEDs are changed from 30Ω to less than 10Ω respectively, and the LEE is improved by 70%, which is mainly attributed to the removal of the light-collecting substrate and the use of metal reflective layers to improve light extraction efficiency. Furthermore, although the process is an improvement over LEE, this structure-based process improvement can be used for LEDs of various wavelengths as well as micro-LEDs in the future. This typical substrate transfer technique can transfer very thin (3 micron) LED structures from one substrate to another without damaging the device itself, thus providing a way to realize flexible substrates in the near future.

No description available.

No description available.