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1003 Uppsatser om Humidity controlled ventilation - Sida 50 av 67
Effekten av hormonsubstitution hos äldre män med åldersrelaterad testosteronbrist: en litteraturgranskning
Background: Testosterone is the most important androgenic hormone in the male. Aging is closely associated with reduction of serum testosterone which can lead to reduced muscle mass, muscle strength, bone density, and depression. These symptoms may be counteracted by administration of testosterone. Objective: The purpose of this study was to examine the effects of hormone replacement in men with age-related testosterone deficiency. Method: We performed a systematic review using Randomised Controlled Trials (RCT).
Effekter av kolhydraträkning vid diabetesdebut hos barn och ungdomar : En registerstudie
Abstract Aims and objectives. To examine whether an intervention with carbohydrate- counting at onset of type 1 diabetes in children, has had any effect on metabolic indicators such as HbA1c , BMI-sds and total daily insulin / kg, 2 months and 1 year after onset by age and gender .Background. The pediatric department at the university hospital of Norrland in Umeå (NUS), has since several years a higher average HbA1c among children 0-17 years, compare with pediatric departments in the rest of Sweden. Therefore, in autumn 2011, an intervention was made to teach children with diabetes and their parents to count carbohydrates from the onset of diabetes. Using this method they can regulate their insulin doses depending on the amount of carbohydrates they are eating.Design. This is an empirical registry study done on the basis of a quantitative method.
Mångfald eller företagskultur : En fallstudie om den pratadoxala relationen kring mångfald och företagskultur
ABSTRACTCourse/level: Enterprising and Business Development, Bachelor Thesis, AUT2012, 2EB00ETutor: Magnus ForslundAuthors: Linn Danielsson & Alexander OlofssonKey words: Strong diversity, Consistent Corporate Culture, Core Values, Corporate Strategy,Definition of Diversity, Working with Diversity, Management, Standardization.Title: Diversity or Corporate Culture ? A case study on the paradoxical relationship betweendiversity and corporate cultures in corporations and organizations.Background: Diversity and corporate culture can in various ways result in corporate andorganizational advantages. While diversity promotes innovation, creativity and companydevelopment corporate culture possesses advantages such as efficiency, community and unity.Diversity and corporate culture seems to create various benefits that are both beneficial forcompetitive advantage.Problem discussion: I would be beneficial for companies and organizations to maintain bothdiversity and corporate culture since they complement each other. However, diversity andcorporate culture have different purposes and benefit in different ways. The question is howtwo such different strategies can meet.Question for research: How does diversity and corporate culture co-exist in corporations andorganizations?Purpose: The aim of this study is to create further understanding for the co-existence betweendiversity and corporate culture in corporations and organizations.Method: The study is made qualitatively with a hermeneutic approach and based on a casestudy on two corporations within the real estate industry.
Utvärdering av ett system för Rapid Control Prototyping inom området robotstyrning
In this report a system for Rapid Control Prototyping, RCP, is evaluated through animplementation of the motor control methods Field Oriented Control, FOC, and Space VectorPulse Width Modulation, SVPWM. The evaluation emphasizes on time-consumption andresource utilization on the used hardware and on usability for of software.A new mechatronic laboratory is under development at ABB Corporate Research in Västerås. Itwill be used for both mechanical and motion control design using existing and new hardware.The control structure in a traditional robot system will be interfaced to a rapid prototypingsystem which should allow easy changes to algorithms at different levels in the system.The system designated for this project comes from National Instruments and constitutesLabVIEW Real-time and FPGA module as the software tools. The hardware is a NI Single-Board RIO (Reconfigurable Input Output), sbRIO, development board including a Field-Programmable Gate Array, FPGA, from Xilinx and a microprocessor from FreescaleSemiconductor. Graphical programming is performed in the LabVIEW environment, andthrough Xilinx tools the LabVIEW FPGA code is compiled to VHDL code.A pre-study was carried out to clarify the concept of RCP and investigate different systems forRCP and their traits.
Kateterrelaterade urinvägsinfektioner ? brist på effektiva preventioner ? En litteratursammanställning
Background: Urinary tract infections caused by indwelling urinary catheters causes unneccesay suffering among those it affects. These infections are also financially straining on the health care services. It is therefore of importance to gain knowledge about which evidence based preventive interventions that have the possibility to reduce the risk for bacteriuria and urinary tract infections among patients with indwelling urinary catheters. Aim: This study aimed to compile available knowledge concerning i) if silver alloy catheters does reduce bacteriuria in this patient group, ii) if aseptic catheterization does reduce bacteriuria in this patientgroup, iii) which routines for changing the urinary drainage bag reduces the risk of bacteriuria, iv) which routine genital hygenic care reduces the risk of bacteriuria? Method: Litterature was searched for in the data bases Cinahl, Medline and The Cochrane Library using the data bases? thesaurius combined with OR/AND.
Kartläggning av energiförluster : gällande klimatskal och ventilation för Stora Enso Timbers Pelletsfabrik i Grums
Due to recent legal enactments regarding carbon dioxide emissions, the car industry is facing higher demands. An effective way of reducing these emissions is to minimize the weight of the vehicle. This thesis constitutes a feasibility study on whether or not it is applicable for the car industry to utilize an inner floor structure comprising composite materials. The principal was the projectSåNätt, in which the main participant was Volvo Cars Corp. In consultation with a reference group, consisting of delegates from the industry and KTH, a specification of requirements was produced.
Crowdsourcing som tillämpningsmetod hos svenska arkivinstitutioner : En kvalitativ undersökning ur ett maktperspektiv
In this thesis I have chosen to study the use of crowdsourcing in Swedish archival institutions as well as the influence this methodic platform has on the work of modern archivists. This also raises the question whether the nature of the platform is in any way influenced by the attitude working professionals might have towards crowdsourcing as a legitimed working method. This investigation is based on case studies and interviews with archivists from select Swedish institutions and also the methodology of two now ongoing crowdsourcing projects.The theoretical framework on which this composition is based comes from the work of Gregory Asmolov and his work on crowdsourcing platforms and their functionality as tools of governing. Cultural-Historical Activity Theory (CHAT) is applied to analyze how the method of crowdsourcing is utilised by archival institutions and influenced by their daily routine in conjunction with Governmentality as the chosen way of studying how these platforms might control their users.From the results of the performed case studies, two discourses emerged based on the view on quality concerning gathered information amongst the involved subjects. The first of these discourses places it´s trust and faith in users themselves where validity is of a lesser concern than the actual availability of information through the concept of ?wisdom of the crowds?.
Effektivare fjärrvärmeanvändning med bättre exergiprestanda i fjärrvärmecentralen
Fjärrvärmen anses idag vara ett viktigt inslag för att öka samhällets energieffektivitet och minska vår miljöbelastning med sänkta CO2-emissioner. I Sverige är i dag omkring hälften av alla bostäder och lokaler anslutna till fjärrvärme och anslutningsgraden ökar samtidigt som antalet kraftvärmeanläggningar också ökar. Med kraftvärme, avses en anläggning som producerar både fjärrvärme och el.För elproduktion i en kraftvärmeanläggning fungerar det fjärrvärmeanslutna bostadsbeståndet som en kylanläggning och en god avkylning är att föredra både för el- och värmeproduktionens effektivitet. Många genomförda studier under 1990-talet har visat på onödigt höga returtemperaturer i svenska fjärrvärmenät och vikten av en sänkt returtemperatur har betonats och värderats men det praktiska arbetet med att öka avkylningen har hittills gått trögt. Med detta som utgångspunkt har fokus i detta arbete lagts på möjligheten att sänka returtemperaturen och då mer specifikt på fjärrvärmecentralens funktion och utformning i de fall där fjärrvärme används för ventilationssystemet. Simuleringar och beräkningar har gjorts för att jämföra olika kopplingsprinciper, den klassiska parallellkopplingen jämfört med en delvis seriell koppling som medför en lägre destruktion av exergi. Resultatet visar att principen för koppling av fjärrvärmecentralen och utformningen av värmesystemet kan påverka returtemperaturkurvans karakteristik vilket ger en sänkt returtemperatur vid fallande utetemperatur i stället för en höjd returtemperatur som i normalfallet. Simuleringsresultatet visade, med en fullständigt parallell koppling som referens, att kopplingen ?Ventilation med återvinning? gav en flödesviktad medelreturtemperatur som var 5,1ºC lägre.
Utveckling av provmetodik för HVAC på lastbil : Klimatprovning i klimatvindtunneln CD7
The issue about how Scania shall perform HVAC tests in the climatic wind tunnel CD7, which Scania is about to complete by year 2013, has resulted in four test methods for truck HVAC and also a test method structure. The test methods have been chosen to focus on sun, snow and rain simulations. These are adapted and developed according to what should be tested and to what can be tested in CD7, which has been the object. With CD7 different climates can be simulated in a controlled environment for complete truck level, from desert with high sun load to arctic cold and snow.The test methods represents a basis to start from, for designers and test engineers which make the testing more repetitive as well as time eventually can be saved. Before the test methods can be applied they must be verified as they are based on theoretical and empirical assumptions.
Kläder i hampa - ett miljövänligt alternativ/komplement till bomull?
Hemp has been used for textiles for a long time in history until it became illegal to grow in many countries in the 1930s. It is interesting from an environmental point of view because it doesn?t need any pesticides and in most locations it doesn?t need any irrigation either, compared to cotton, which normally requires big amounts of both pesticides and water for irrigation. Hemp is a bast fiber, which means that the fibers are located on the bast of the stem (on the outer layer of the stem). Therefore they cannot be spun directly, they have to be removed from the stem first.
Fallstudie av Ragnar Östbergs "Ett hem" med avseende på hållbarhetsaspekter : Framtagande av ny husmodell anpassad till dagens krav och standard
Byggandet måste bli mera hållbart. Bostadssektorn står för en stor del av koldioxidutsläppen och energianvändningen. Kemikalieanvändningen i byggbranschen är omfattande. Det har inte alltid varit så. Dessa förändringar har skett huvudsakligen under 1900-talet.
Den rättsliga makten över den könade kroppen : ? en studie av kraven på sökanden vid fastställelse av könstillhörighet i vissa fall
Abstract Children with neuropsychiatric disorders often require special arrangements from the society. These measures could target the child itself, its parents, or other parts of the social network surrounding the child. Parents of children with neuropsychiatric disorders are often deeply engaged both in their child and in these measures.Three parents of children with neuropsychiatric disorders, and four counselors in different habilitation centers, were interviewed. The purpose of this qualitative interview study was to describe the methods with which the counselors worked to support parents of children with neuropsychiatric disorders, and to understand how the parents experienced this support offered by the counselors.The qualitative interviews with counselors and parents followed a thematic interview guide. A structured interview form was used.
Development of green space in Dar es Salaam, Tanzania
In Dar es Salaam, as in many cities in developing countries, green areas are decreasing due to the fact that the growth of buildings, infrastructure and services has become a priority. As the population increases more buildings and infrastructure are needed and much of the building activity takes the form of uncontrolled settlements, which encroaches the public green space. Dar es Salaam has approximately three million inhabitants, of which about 70 percent are living in informal settlements.
The aim with this study is to make a design proposal for a park and recreation area where the Msimbazi river basin in the centre of Dar es Salaam is today.
The basin consist of a few playing fields, footpaths and some urban farming, but apart from this it mostly consists of unused grasslands, swamps and forests. Because it is an unsafe place and badly connected to the rest of the city infrastructure, it has become a barrier. The annual flood combined with the constant still shallow water creates a good breading ground for malaria mosquitoes.
Fysisk arbetsmiljö i storhushåll - Ur arbetsledares synvinkel
I Sverige upplever dagligen över 1,5 miljoner sysselsatta, sitt arbete som ergonomiskt påfrestande. Inom storhushållsbranschen förekommer många av de vanligaste arbetsmiljöproblemen som t.ex. buller, tunga lyft, dåliga arbetsställningar, bristande ventilation, hala golv, kemiska hälsorisker och farliga maskiner. Arbetet i storhushåll är ofta fysiskt tungt utan att hänsyn tas till att flertalet arbetstagare är kvinnor. Till följd av detta är belastningsskador vanligt förekommande i branschen.
Utveckling av mobilapplikation för lutfrenare i möbel
During the year 2014, Artex AB has worked to launch a new product whose function is to locally purify the air. The product is a headboard and its purpose is to give the user clean air while sleeping. The air purifier has different speeds and it`s up to the user to choose which effect that will be on. To get the best experience of the product as possible, the air purifier shall be controlled by a mobile application. In that way the user can increase and decrease the fan speed, even when the user not is home.