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Optimization of the lifecycle transformer 110/22 kV
Suk, Jiří ; Radil, Lukáš (referee) ; Krbal, Michal (advisor)
The aim of the thesis is to describe the situation in transformation 110/22 kV in distribution area E.ON East. Next to describe the current practice in the replacement of 110/22 kV transformers and mention the possibilities of replacing the machines at the end of their lifecycle with respect to the development of the load of the individual transformer stations in the distribution area. An integral part of the thesis is also the economic evaluation of premature replacement of transformers from two different perspectives. The next point is to look at the current possibilities in the lifecycle lengthening of these devices and to suggest a method for monitoring the state of paper insulation to estimate the remaining lifetime of the transformer. The last point is the evaluation of the transition of a significant customer from a voltage level of 22 kV to a voltage level of 110 kV, including related technical and economic issues.
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Development of the first metatarsophalangeal joint replacement
Barták, Vladislav ; Popelka, Stanislav (advisor) ; Stehlík, Jiří (referee) ; Krbec, Martin (referee)
The work provides a comprehensive overview of the issues hallux rigidus with a focus on the first metatarsophalangeal joint replacement and development of our own implant. The development was built to perform anatomical studies, the results were the basis for the construction of hemiarthroplasty and total arthroplasty. It was necessary to measure the marrow cavities of the distal part of first metatarsal and proximal half of proximal phalanx. We measured the size of the metatarsal head in two planes, and its tendency to diaphysis on the dry preparations. Through these studies we obtained valid data for the construction all components of both hemiarthroplasty and total arthroplasty of specifying the size spectrum. We have verified and then corrected the shape of implant treatment during post-mortem tests on the models. The result is a new type of arthroplasty with their own design to guarantee restoration of joint function and coated with a high osteointegral potential. In clinical studies, we performed 22 implantations of hemiarthroplasty and one implantation of total arthroplasty. Clinical results suggest the fact that the implant will be successful. However the ultimate answer to this question will provide long-term study. The other results presented with a detailed anatomical description show to...
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Lapped scarf joints for reconstruction of historical structures
Kunecký, Jiří ; Fajman, P. ; Hasníková, Hana ; Kuklík, P. ; Kloiber, Michal ; Sebera, V. ; Tippner, J.
This paper presents a description of the repair of timber structures using a prosthesis scarf\njoint designed for the replacement of damaged parts of beams. This new scarf joint makes use\nof the strutting effect of inclined contact faces where the forces are transmitted through\nwooden coupling elements - wooden dowels or keys. The scarf can be modified in four\nvariants according to the relevant stress and is suitable for historically valuable timber\nstructures. It meets both functional and aesthetic requirements. The designer - structural\nengineer will learn in the methods the load bearing capacity or stiffness of the beam with the\ndesigned joint, its recommended dimensions and detailed geometry. The contractor will\nappreciate the description of the execution and maintenance of the joint.
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Research of effective use and activation of activ concrete additions
Mikhailova, Olesia ; Ťažký, Tomáš (referee) ; Hela, Rudolf (advisor)
The theoretical part describes the admixtures that are used in cement replacement. Here also summarizes the findings on the influence of granulomentry, grain shape and fineness of admixtures on the density of the cement matrix. The practical part is experimentally verified the influence of fineness admixtures and grain size on the mechanical properties of concrete. Also, the rheological properties of cement are compared with admixtures depending on the type and dosage and time.
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Octave and Matlab comparison in terms of basic mathematics
Zahradník, Radek ; Grepl, Robert (referee) ; Krejčí, Petr (advisor)
How is mankind grow older, its knowledge about nature, which in it lives, is getting deeper. Unfortunately human brain in itself became short for solving modern problems and we have to help ourselves with computers and modern computerised methods. But computers themselves can not solve the problems. We need to equip them with adequate software. Goal of this work is to compare Octave and Matlab systems in part of compatibility and in the solvings of practical problems.
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Activation admixtures in concrete
Eger, Lukáš ; Hela, Vlastimil (referee) ; Hela, Rudolf (advisor)
The aim of my bachelor´s work is the summarization and focus on admixure concrete,and the active and inert admixure, which have some positive characteristies for fresh and hardened concrete. Theoretically, I tried to study the increase of their joining potential while this characteristic can be used by either chemici or mechnical way, their combination as well. I also Works on evaluetion of physically mechanical influence for fresh and hardened concrete that can up to 60 days old while the cement was partly substituted by admixure of different character.
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The use of carpentry joints for the repair of historical structures
Kloiber, Michal ; Kunecký, Jiří ; Hasníková, Hana ; Sebera, V. ; Tippner, J. ; Fajman, P. ; Růžička, P. ; Stejskal, D.
The conservation process describes the way of using prosthesis lap scarf carpentry joints for reconstruction of historical timber structures. This new scarf joint makes use of the strutting effect of inclined contact faces where the forces are transmitted through wooden coupling elements - wooden dowels or keys. The process consists of several chapters describing the diagnostics of original wood and the repaired structure, the design of the joint and execution of the joint. It also includes examples of succesful reconstruction made with according to this conservation process.
Fulltext: content.csg -  PDF
Plný tet: 0459383_2015_Kloiber_et_al_Vyuziti_celodrevenych_tesarskych_spoju_pri_opravach_historickych_konstrukci_PP_NAKI-004_AVV - PDF
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Lapped scarf joints for repairs of historical structures
Kunecký, Jiří ; Fajman, P. ; Hasníková, Hana ; Kuklík, P. ; Kloiber, Michal ; Sebera, V. ; Tippner, J.
This guideline presents a description of the repair of timber structures using a prosthesis scarf joint designed for the replacement of damaged parts of beams. This new scarf joint makes use of the strutting effect of inclined contact faces where the forces are transmitted through wooden coupling elements - wooden dowels or keys. The scarf can be modified in four variants according to the relevant stress and is suitable for historically valuable timber structures. It meets both functional and aesthetic requirements. The designer - structural engineer will learn in the methods the load bearing capacity or stiffness of the beam with the designed joint, its recommended dimensions and detailed geometry. The contractor will appreciate the description of the execution and maintenance of the joint.
Fulltext: content.csg - PDF
Plný tet: 0459382_2016_Kunecky_et_al_Celodrevene_platove_spoje_pro_opravy_historickych_konstrukci - PDF
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Nursing care of clients around the shoulder joint prosthesis
HÖFEROVÁ, Eva
This bachelor´s work tries to specify and determine differences in the care of a client after a shoulder joint replacement. The shoulder joint is a complicated joint of the shoulder girdle which can be affected by many disorders and worsen the whole self-care of the client. If a damage or a disorder of the shoulder joint appears, the client may become non-self sufficient and dependent on the help of others. The bachelor´s work is divided into two parts. The first part is a theoretical part and deals with the history ? how replacements were performed and looked like if compared with the present times and the present possibilities of treatment. The anatomy has to be followed by another important information concerning indications and reasons for performing the replacement. The reasons are different. As far as we mentioned indications, we also have to mention contraindications, i.e. reasons for which the replacement must not be performed. After going through the contraindications, we get to a chapter about examining and here we mention the complete examination of the shoulder joint and how the shoulder joint is examined before the operation. An important part of this bachelor´s work is a preoperative care which relates to a complete preparation of the client for the operation. The preoperative care is followed by a postoperative one. The postoperative care starts at an intensive care unit (ICU) where the client is transfered from the operation theatre. At the ICU, the client is monitored and all undesirable situations that might appear are observed. The second part relates to carrying out the research and to setting the aims of the bachelor´s work. The research was carried out on the basis of a semi-structured interview with nurses in the Hospital České Budějovice on the The interviews were carried out since January to March 2013. All the written interviews were later transferred into an electronic record. The questions related to the nursing care of the client before and after the operation of the shoulder joint, to a position of the upper limb after the operation, and to the complete care of the client. The answers result in the fact that all the respondents know and manage the care of the clients after the operation of the shoulder limb. The major follow-up care includes putting the client into the right position and supporting his upper arm, checking the blood samples, an X-ray image and applying the Gilchrist- bandage. The second part of the interview was focused on providing the clients with information before and after the operation, who, when and what type of information is given to the client and what extent is the client informed to. All the interviews were evaluated and divided into cathegories. Two research questions, relating to this work, were determined. The research question about the principles in nursing the clients with the shoulder joint replacement, and the one about a way in which runs passing the information to the clients with the shoulder joint replacement. Both of the questions were answered. The answer for the first question was, that the major principles include the position of the operated limb, the Fowler´s position of the client, the X-ray image and applying the Gilchrist-bandage, carrying out the blood samples, checking the client´s complete condition and proper and careful rehabilitation. The second question, concerning the information, was also answered by the respondents. The client is told the information orally at the moment of his transfer from the operation theatre to the ICU department. But first of all, the client is told about what is going to happen on the Department of Orthopaedics by the nurses.
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