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1072 Uppsatser om Audio Frequency Track Circuit - Sida 42 av 72
Tillverkning av mikronålar för medicinsk tillämpning
Transdermal drug delivery, besides painfulinjections with syringes, has long been associatedwith small size particle pharmaceuticals, which candiffuse through the skin. This method of drugadministration has only been applicable on a smallnumber of drugs, where active molecules are smalland delivery time should or can be long.Other drug delivery options are oral administrationand injection with hypodermic needles (ordinaryhospital syringes). In oral administration thestomach and liver tend to dissolve the drug and theeffect becomes more difficult to anticipate, anddrug delivery rates difficult to control. Hypodermicneedles are used as a mean of drug injectiondirectly into the bloodstream. This method ispainful and risks infection due to tissue damageand skin penetration.One way to get a painless non-damaging techniquewith high delivery rate that still can delivery largemolecules is to manufacture an array of microscopichollow needles and equip them with a pumping unitthat delivers the correct amount of drugs.This thesis shows the technique and possibility ofmanufacture micromachined needles using low costtechniques of Ion Track Technology (radiation ofheavy ions creates porous materials), electrolessdeposition (non-current activated wet chemistrymethod of depositing metal) and electroplating.
Implementation of a Data Handling System for a Scientific Magnetometer on a CubeSat
Since their invention in 1999, CubeSats have become a widespread standard for small picosatellite missions. CubeSats allow for quick development of satellite payloads and launch in space without the high costs of a normal satellite. Emphasis during the CubeSat design process is placed on use of commercialoff- the-shelf (COTS) components and reuse of previously-designed units.This report describes the interfacing of a scientific magnetometer, the Small Magnetometer in Low-Mass Experiment (SMILE) to such a CubeSat mission, the Space Weather using Ion spectrometers and Magnetometers (SWIM). Design of a complete platform for use in multiple such missions is presented here.Modularity is one of the key aspects followed in the course of the work. A new board containing the analog pick-up and compensation circuitry for SMILE has been designed to fit inside a CubeSat frame.
Orienterare, framtidens naturvårdare? : Inventering av markstörningar i samband med O-Ringen i Skåne 2014
As an increasingly rationalized forestry and agriculture have human interference in the form of tradition, grazing and use declined. There is a strong link between biodiversity and disturbance of the landscape. In sandy soils many insects and plants require exposed sand to survive while the disorder may contribute to seed dispersal in the woodlands. On behalf of O-Ringen Skåne 2014, a study of the interference from orienteering in sandy soil and the forest during competitions conducted. The aim is to clarify the interference of which orienteering runners contributes, through to inventory presence before and after the competitions in the bottom and field layer in three locations.
Sociala Medier : Interagera, engagera och komplettera
Social media has made it possible to have a conversation in real time through audio, images and text, with anyone worldwide. The easy availability of social media has created a new society. Companies and organizations have the opportunity to interact with their audiences and their target in a way not previously possible. Welcome to the Web 2.0 world!Social media is a collective name for the communication channels that allow users to communicate directly with each other in real time through text, image or sound. Examples of social media are blogs, SMS, Skype, Facebook, Flickr, Youtube, Linkedin and Myspace.The purpose of this essay is to explore social media's role and opportunities in terms of being able to influence companies and organizations marketing communication. We have used a qualitative approach and our thesis is based on a qualitative text analysis study where we have analyzed 13 articles (the articles are from scholarly journals, magazines and trade/professional) from 2007 to 2009.
Probiotika som prevention mot urogenitala sjukdomar
About 10 % of the adult women population in Sweden are treated annually for urinary tract infections. The increasing bacterial resistance towards antibiotics is classified by WHO (World Health Organization) and ECDC (European Centre for Disease Prevention and Control) as one of the greatest treats for human health in a global perspective. To find alternatives scientists are studying the possibility to use probiotics to reduce the frequency of recurring urinary tract infections. This literature study examines five randomized double blinded placebo controlled studies where different strains of Lactobacillus have been used as a prophylactic to women suffering from recurrent urinary tract infections and bacterial vaginosis. Overall the studies do not display enough promising results to recommend the use of probiotics as a prophylax or cure..
Ensam är stark?: En studie i elgitarrspel i powertrio
Under mina åtta år som elgitarrist har jag alltid i ensemblesammanhang spelat tillsammans med ytterligare minst ett ackordinstrument. Det har resulterat i att jag alltid anpassat mitt spel till vad de övriga ackordinstrumenten har spelat, för att skapa ett luftigt och bra arrangemang. Att spela i en mindre ensemble bestående av trummor, bas och elgitarr innebär en ny utmaning för mig som elgitarrist. Genom att välja ut fyra låtar och arbeta med dem utifrån tre specifika frågeställningar har jag i detta arbete undersökt mitt elgitarrspelande i denna mindre sättning. På grund av omständigheter som uppstod under arbetets gång, tillkom även en femte låt.
Riskfaktorer för uppkomst av neurologisk sjukdom vid infektion med EHV-1
During the cultivation season there are a several cropping activities to carry out. At what time these activities are carried out is affecting the result and also on the economy of the crop production. As the production costs are high in potato production, it is important to keep an eye on the economy. Profitability is the most important factor in most crop production systems. If the costs are not covered, it is difficult to justify the production.
Utvecklingen av det digitala folkbiblioteket - När visionerna liknar verkligheten
As the way of communicating and accessing information has changed radically over thepast decade so has the way the public libraries operate to reach the citizens. In thesetimes the demands of what a public library should be and offer the visitors havechanged. One should have the option to access the digital public library at any givenhour of the day, from anywhere in the world and at least have the same possibilities ofinformation as the visitors at the non-digital, "real" library.In this Master's thesis we will analyze and discuss the condition of the Swedish digitalpublic library of today, 2006, and the forward thinking work with the issues ofdevelopment in this matter. In order to do this we set out to examine the attitudetowards the public digital library among the staff at a small number of Swedish publiclibraries and their supporting institution, the county library. Moreover, the attitudesdefined have been compared to the actual status of the services and medias at the publiclibrary websites.In conclusion, we have detected a certain standardization of what the digital publiclibrary consists of today.
Officersutbildningens akademisering : En studie av yrkesidentitet i förändring
Department of Education, University of Stockholm. Second year research project, autumn term 2009. The transformation of Swedish officer´s training into an academic professional education ? a study of professional identity in alteration. The study is a part of the Research Project; Discussion for collaboration - from vocational training to academic professional education.By Michael LarmThe purpose of this study is to analyse in what way the process of transforming Swedish officer´s training into an academic professional education are perceived in terms of professional identity, alteration and synergies.
Vibrationsdämpning av värmepump
Thermia Värme AB is one of the market leading manufactures of heat pumps. In order tomaintain this position, the company wants to improve the vibration characteristics of theirproducts. The aim of this thesis is to develop product design changes that lead to a reductionof vibrations in the heat pump Thermia Diplomat 8.The main cause for vibrations in the system is flow pulsation and mechanical forces inducedby the scroll compressor. Vibration is transmitted through the compressor piping and receivedby the heat exchangers, from where it is further transmitted to the connection points for theradiator and heat source circuits.A number of design changes in order to improve the vibration characteristics have beenevaluated through calculations and practical experiments. The changes have included thecompressor and heat exchanger mountings, the compressor suction and discharge line pipingand also pulsation dampening.The results of the experiments show that the vibration levels in the connections for the heatingand brine circuits can be decreased strikingly through changes in suction and discharge linepiping.
Säker mat i skolan?
Laws and regulations govern the school kitchens in Sweden. The municipality controls how well the school kitchens obey those laws. An annual fee covers the municipality?s expenses for the public control of the school kitchens. To be able to calculate this annual fee, a risk evaluation needs to be done.
Att samverka för att växa : En studie sv stora svenska småföretag
In the year of 2001, China launched their new international marketing strategy Going Global. As an effect of this, the frequency of Chinese establishments in Sweden has increased heavily in the last ten years. One of the larger Chinese establishments in Sweden happened in 2003, by the telecom company Huawei. This essay illustrates the obstacles that a Chinese company faces when setting up their business on the Swedish market. Previous studies have focused on Swedish establishment abroad.
Telekrig mot bandspridningsteknik
I denna uppsats betraktas två olika bandspridningstekniker och vilken påverkan de har på telekrigsförmågan. Uppsatsen svarar på frågan:Vilka möjligheter finns att bedriva signalspaning och störning mot radiokommunikation som använder bandspridningsteknikerna frekvenshopp eller direktsekvens?Inledningsvis beskrivs en modell för telekrig mot radiokommunikation, ?telekrigcykeln?. Därefter beskrivs principer för ett radiosystem samt de två bandspridningsteknikerna frekvenshopp och direktsekvens. Slutligen analyseras bandspridningsteknikernas påverkan med hjälp av telekrigcykeln och resultaten diskuteras.Uppsatsen kommer fram till att båda signalerna går att spana mot, direktsekvens innebär större svårigheter för signalspaningen än frekvenshopp.
En jämförande studie kring några av dagens produkter inom Store and Forward och Live
SVT is Sweden?s largest TV-network and broadcasts more then 22 000 hours of TV each year. SVT is a public service company where the basic idea is to reflect the world from different perspectives and news is very important for providing neutral and versatile information in a variety of areas. An important part of the flow of information is to continuously receive reports from all corners of the world around the clock. This places very high demands on the technology used and it is important that it function and develops to meet current and future growing needs.
När kultur var i rörelse : Kulturbegreppets förändring under sextiotalet, speglad genom tidskriften Ord&Bild
The aim of this thesis is to analyse and problematize the concept of culture and its changes during the 1960s. By examining articles out of the periodical Ord&Bild 1962-1972, I show how an aesthetically marked concept, closely related to the concept of art, changes into an anthropological perspective where attention is drawn to the social, economical, political and ideological aspects. This change is viewed in relation to the works of three prominent cultural theorists from the 1960s: Raymond Williams, Marshall McLuhan and Herbert Marcuse.The change that the concept of culture undergoes can be illuminated in several ways. Epistemologically questions of art, its objectivity and relation to reality, are replaced by questions of the function of art and of its role as reproducing ideas and norms of a bourgeois society. Economical and social aspects are used as critical factors in discussing the role and conception of culture, a perspective that gives the discussion a political and ideological edge.