Dissertations / Theses on the topic 'UVGI'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 15 dissertations / theses for your research on the topic 'UVGI.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
Dreiling, Jeremy B. "An evaluation of ultraviolet germicidal irradiation (UVGI) technology in health care facilities." Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/651.
Full textKallström, Angelica. "ST-LÄKARES HANDLÄGGNING AV UVI IPRIMÄRVÅRDEN." Thesis, Örebro universitet, Institutionen för medicinska vetenskaper, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-86373.
Full textChae, Suhn-Kee. "DNA repair and mutagenesis in the UV-sensitive mutant UVSI of Aspergillus nidulans." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41098.
Full textSandelin, Danielsson Annika. "Riskfaktorer och förebyggande omvårdnadsåtgärder för UVI hos äldre kvinnor : En litteraturöversikt." Thesis, Högskolan Dalarna, Omvårdnad, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:du-21674.
Full textBackground: Urinary tract infection (UTI) is one of the most common infections for elderly women. Escherichia coli (E-coli) is the most commonly found bacteria when screening for UTI. Older women suffer when they have UTI and it’s up to the nurse to prevent sickness and to ease the pain. Aim: To describe risk factors and nursing care prevention against UTI for elderly women. Method: Based on science articles received from databases specified on care and nurse caring. CINAHL, PubMed, WEB OF SCIENCE and Medline. 15 articles is used for the results. Results: A prior history of UTI, diabetic, urinary incontinence, and constipation is risk factors to developed UTI. High hygienic standard is a good prevention against UTI. Regular infusion of liquid is good prevention to not develop UTI. Cranberry for prevention against UTI needs further research. Conclusion High hygienic standard through basic hygiene is an important prevention against UTI.
Olsson, Philip, and Carl-Johan Jönsson. "Sha Jun." Thesis, Halmstad University, School of Business and Engineering (SET), 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-734.
Full textThe agriculture in Sweden today uses chemical substances to control vermin, weed
and diseases. This usage shows through polluted subsoil water and trace elements in
the food we eat. There’s a risk that additional symptoms will arise in the future.
Our product Sha Jun, developed in 2006-2007, is an attempt to try and minimize the
need of chemicals in the agriculture. The idea started with the attempt to minimize the
usage of pesticides on the cropland. It later developed in an attempt to decrease seed
disinfectant. The spraying with seed disinfectant today is happening with a rate of 1
tonne/h. They hope one day to reach the speed of 5 tonnes/h. With our product you
reach speeds of 17.5 tonnes/h. We also eliminate the need to use the dangerous seed
disinfectant on the seed before it s stored. The market for our product in Sweden
consists of approximately 800 potential buyers. These include farms over 200 hectares
and collection centrals. It will also give ecological framers a change to decrease their
losses in useless crops. This because our method of treatment is environment-friendly.
Kjellström, Jessica, and Karlsson Evelina. "Är teknetium-99m DMSA-scintigrafi på barn 0-2 år berättigad vid utredning av njurparenkymskador efter pyelonefrit? : Parenkymskador och komplikationsrisker i förhållande till cancerrisk." Thesis, Hälsohögskolan, Högskolan i Jönköping, HHJ, Avd. för naturvetenskap och biomedicin, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-40096.
Full textA dimercaptosuccinic acid (DMSA) scintigraphy is used to test for pyelonephritis, an inflammation of the kidneys with risk of renal scarring. Aiming to investigate if DMSA scan after pyelonephritis in children is justified, we calculated the general cancer risk, the specific increased renal cancer risk, the number of discovered renal scarring and potential differences between the sexes. The method was retrospective and quantitative and data was based on results from DMSA scans of children aged 0-2 years. From the original set of 91 children (52 girls, 39 boys), 16 were excluded. Of the remaining 75, six (8 %) had renal scarring; with an average age of 9,2 months, and there was no significant difference between sex and renal parenchymal damage (p=0,0246). The mean activity from a DMSA scan equaled an effective dose of 0.69 mSv, with general cancer versus renal cancer risk being 0.01-0.014 and 0.00019, respectively. Even though only a few children develop renal scarring, there is still a risk of complications. Renal scarring is therefore important to discover. The increased risk for cancer and renal cancer after a DMSA scan is low. The benefits (discovering renal scarring) are greater than the risk (radiation), making the DMSA scan justified.
Håkansson, Isabelle. "Probiotika i jämförelse med antibiotika som profylax hos barn med urinvägsinfektion." Thesis, Linnéuniversitetet, Institutionen för kemi och biomedicin (KOB), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-103152.
Full textA urinary tract infection (UTI) is a collective name for an infection that occurs in the urinary tract and it affects about 2% of Sweden's population during their first year of life. The urinary tract infection is caused mainly by intestinal bacteria and the most common pathogen is the gram-negative E. coli. The infection can occur in different parts of the urinary tract, and it is therefore called by different names. An infection of the bladder is called cystitis and an infection that has spread to the upper urinary tract and kidneys is called pyelonephritis. One of the reasons leading to progression of an infection to pyelonephritis is vesicoureteral reflux (VUR). VUR implies that urine flows back from the bladder and up through the ureter, towards the kidneys. This also increases the risk of recurrent UTI. In many cases, this requires at least three antibiotic treatments per year, which in turn increases the risk of developing antibiotic resistance. Researchers are therefore trying to come up with alternatives that can help prevent new infections. An example of such an alternative is probiotics, which are a live bacteria. The most common probiotics are bacteria that belong to the genera called Lactobacillus and Bifidobacterium. Different types of probiotics may have different effects and they can be beneficial to a person´s health when ingested in the right amount. The purpose of this literature study is therefore to investigate whether antibiotics, in comparison with probiotics can reduce the risk of a recurrent UTI, and thereby examine the possible disadvantages of the two treatment methods. To be able to do this, six studies were examined that studied the effect of antibiotics and/or probiotics in connection with recurrent UTI in children. It is concluded that there is no significant difference in the effect between trimethoprim-sulfamethoxazole and second-generation cephalosporins or Lactobacillus acidophilus. However, an increased number of strains of probiotics may be beneficial compared to placebo in order to prevent a recurrent UTI.
Stenholm, Annica, and Annika Lundberg. "Prevention av kateterrelaterad urinvägsinfektion." Thesis, Malmö högskola, Fakulteten för hälsa och samhälle (HS), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-24271.
Full textThe aim of this literature review was to investigate the nurse preventive measures for catheterrelated urinary tract infection. The study is based on Goodman's seven steps for a systematic literature review. A total of ten scientific articles with varying quality were included. The articles were found in the databases Cinahl and PubMed. The quality of the articles was determined by using a modified quality protocol. The result shows a reduction in the incidence of catheter-related urinary tract infection in carrying out preventive measures such as; handwash and proper fixation of catheter tubing, the use of intermittent and silver-coated catheter, a reminder procedure of unnecessary use of catheters and control of the duration of the catheterization. A more comprehensive study on these measures is needed to be able to determine their degree of evidence.
Hedman, Ellinore. "Probiotika som prevention mot urogenitala sjukdomar." Thesis, Linnéuniversitetet, Institutionen för kemi och biomedicin (KOB), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-37276.
Full textLesourd-Moulin, Valérie. "Les acides humiques et leurs interactions avec les éléments métalliques Cull, EuIII, ThIV, UVI : apport d'une méthode de chromatographie par exclusion sérique et recherche de modèles de complexation." Lyon 1, 1985. http://www.theses.fr/1985LYO10506.
Full textKowalski, Wladyslaw Jan. "Design and optimization of UVGI air disinfection systems." 2001.
Find full textChen, Jia-Fu, and 陳家福. "The sterilization effect of bacteria with different settings of UVGI equipment by CFD_FLUENT simulation." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/40468058881031269759.
Full text明志科技大學
環境與安全衛生工程系環境工程碩士班
105
This study “The sterilization effect of bacteria with different settings of UVGI equipment by CFD_FLUENT simulation”. According to the domestic applied case “UVGI disinfection system in the upper space” which is to reduce the concentration of bacteria in the air, there is an improvement before and after the effect is not obvious problem. Therefore, the study was divided into two parts “The vertical distribution of bacteria in indoor air gradient” and “The system of air circulation kinetic energy”, arrangement of a series of sampling programs and CFD numerical simulation of indoor flow fields. The vertical distribution of bacteria and different settings of UVGI equipment in the indoor space were discussed, which could be used as reference for indoor air quality improvement. In order to investigate the vertical distribution of bacteria at different heights, the impact sampling and natural sampling method were used at the unmanned corridor and the student restaurant. In the "air circulation kinetic energy system", in this study, the flow field distribution is simulated in four locations TOP, MID, BOTTOM, SIDE, and then air conditioning systems and different sources of pollution from steady-state simulation. According to bacterial sampling results, (1) The concentration of bacteria does vary with the height of different space, the concentration trend is inversely proportional to the height. (2) The impact of population activities at least increased the number of colonies four to ten times. (3) The natural sampling for 1hour with impact sampling conversion factor is approximately 28.7 to 37, while the natural sampling for 4hour with impact sampling conversion factor is about 12.3 to 17.8. According to CFD simulation results, (4) Using the SIDE position is better in different settings. (5) In the "different wind speed" simulation, we can see that when the wind speed is more than 7 m/s, it has the ability to drive the flow of simulation space. (6) In the simulation of the pollutant point at different distances, the distance from return air can effectively bring pollutants is 0 to 6 meters. (7) At the same time, My aim is to record the average speed value of different detection points, compare the non-air conditioning system and air conditioning system with the numerical differences and found that when the air conditioning system is added, all the values have an upward trend, on behalf of the air conditioning system will affect the transfer of pollutants, and different configurations will have different effects, the situation is complex.
Suh-Ling, Huang, and 黃素玲. "Study the Effects of Ultraviolet Germicidal Irradiation (UVGI) on the Protective Performance of N95 Masks." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/69404869978970544690.
Full text中華醫事科技大學
生物安全衛生研究所
98
The aim of this research was to study the feasibility of N95 mask reusing after ultraviolet germicidal irradiation (UVGI) and its impact on protective efficiency. This paper includes two parts: (1) First one is a prospective study by expert-consensually structured questionnaire in hospitals with tuberculosis isolation-ward for health-care worker (HCW) to collect the demographic data and the information about N95 mask wear conditions. (2)The second part is the use of experimental design to study the quantitative fit testing of N95 respirator wearing by health-care workers, as well as filtering effectiveness of N95 masks for not exposed to UVGI (control group), 30 seconds after UVGI (experimental group I) and 150 seconds (experimental group II), respectively. The results were shown that to reuse the N95 mask must be used repeatedly for sterilization by HCW approximately 64.2%, and about 59.2% have a sensation of safety after disinfection by UVGI. The replacement frequency of the N95 masks was related to gender, job title, department, the residence time of negative pressure isolation ward, access number for negative pressure isolation wards. Particulate filtering efficiency after exposure to UVGI or not among the three groups was not statistical significantly. The quantitatively fit test of N95 mask after reusing many times or exposure to UVGI in 30 seconds or 15 seconds, respectively, were not affected by different types of exercise. The protective performance of N95 mask reused by HCW was not degraded after exposure to UVGI. In conclusion, the wearing duration for HCW after UVGI for a long time or several times will result in decrement of N95 mask filter efficiency or not conform to the requirement, as well as medical workers cannot change a N95 masks and wearing masks deserve to study in the future.
Wang, Han, and 王涵. "Development of iHealth APP Incorporating Face detection for UVI Prediction." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/6erv2e.
Full text國立中興大學
資訊管理學系所
103
There are over 3.5 million cases of skin cancer diagnosed in the US every year. Studies have shown that prolonged exposure to the sun would result in skin cancer. In this study, the intensity of nose and philtrum has been normalized by using Max-Min Normalization. However, there was significant difference between intensity of nose and philtrum by using paired-sample t-test. Furthermore, it was found that predicted UVI (ultraviolet index) was a multiple of ratio of nose intensity to philtrum intensity in further analysis. Besides, there was not significant difference between predicted UVI and Central Weather Bureau’s UVI by using independent-sample t test. Additionally, a mobile APP (Application) was constructed. It can not only predict UVI with face detection automatically but also offer users information about skin cancer in time. Finally, Technology Acceptance (TAM) Model was applied to check the reliability of ihealth APP. Results revealed that ihealth APP is reliable.
Hsu, Chiao-Tinh, and 許喬婷. "The Integrated Research of Ultraviolet Index (UVI) Detector and Vehicle Image System." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/sc2674.
Full text國立虎尾科技大學
光電與材料科技研究所
95
A new solution to implement to vehicle image system by detecting Erythema Action Spectrum (EAS) , integrate one detected circuit which is designed by TiO2 optical sensor and amplify circuit, and generate UVI to output images real time is an effective method in this thesis. There are two parts in hardware framework: Outer Part Device and Inner Part Device. Outer Part Device is to detect UVB irradiation and then transfer data to Inner Part Device. Inner Part Device is in charge of UVI computing and output images on the display of the vehicle. It is convenient for driver to check real-time ultraviolet index (UVI) and output the different color image with different color light on the screen of vehicle image system, also it is very simple and easy understand for end user to get the information. The data exchange between Outer Part Device and Inner Part Device is used by wire. This system not only has advantages such as easy installation, suitable for each type of vehicle, user friendly, lower cost, compact dimension, great precision and easy portable feature but also could add the function of existed vehicle image system. This research indeed has practicable and commercial value to integrate UVI detector and vehicle image system.