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1072 Uppsatser om Audio Frequency Track Circuit - Sida 60 av 72
Akustisk mätning av U-värde
This pre-study investigates the possibility of U-value measurements through an acoustic method. A hypothesis about an acoustic model built on acoustic theories combined with U-value theories is presented to answer the questions:
? Can U-value theory be combined with acoustic theories?
? Can the coefficient of heat be affirmed trough an acoustic measurement?
The idea for this dissertation begun with a logical idea in mathematical similarity, between the coefficient of heat transmission units and sound intensity units.
The U-value theory is based on assumptions such as initial resistance for inner walls and initial resistance for outer walls. The resistance in the material is interpreted through sound intensity theory.
The argument is built upon mass law theory, which means if the frequency or thickness of the material layer doubles it implies an increase of sound reduction by 6 dB.
Downloading and filesharing through Peer-to-peer networks: the copyright versus the free access to the cultural products
The ?peer to peer? (P2P) is a technology of downloading and filesharing between online - Internet - users by the mean of specified software. Since June 1999, the Napster software has made the happiness of millions of individuals who used it to obtain and share free audio files Mp3. Rapidly, the major recording companies have prosecuted the Napster Company and managed to force it to close down. They were arguing against it for it is supporting the development on a large scale traffic of files protected by copyright and thus was threatening the whole music and movies economic world.
Effekten av plyometrisk träning i starten för unga elitsimmare
Tidigare studier har visat att spänst och explosivitet är relevant för olika idrottsprestationer. Vidare finns det flertal studier inom plyometrisk träning som har påvisat förbättring av spänst i sprintgrenar. Dock har få studier gjort om plyometrisk träning för simmare. Detta finner vi uppseendeväckande då de studier som gjorts visat ha en positiv effekt och då framförallt i start och vändningar inom sporten simning. Syftet med studien var att se om simmare ökar sin explosivitet i starten genom att utföra ett åtta veckors plyometriskt träningsprogram i samband med ordinarie träning. I studien använde vi oss av en testgrupp bestående av sju manliga och tre kvinnliga elitjuniorer från simklubben Laxen, Halmstad. Testerna som gjordes var en repetition av max(1RM) på knäböj, long jump, squat jump och tiden mellan startfasen och glidfasen.
Arbetstidsförlagd och subventionerad träning/motion och effekter på sjukskrivning
During the last Century a tremendously technical advancement has taken place and brought a change in society, which has affected workplaces in a monumental way. Many heavily and moveable physical working tasks at the work placement have been replaced with much easier and sedentary tasks.Two of the major reasons for sick absence in Sweden are illness in the locomotive organs and pain, which can be treated and prevented with physical activity on a large scale. Many employers offer their employees? subsidized exercise cards, which can be used during their free time. A health care exercise hour is one benefit that employers can offer their employees and normally takes place once a week during fully paid working time.
Utvärdering av felmeddelande i eMM Software Version 00-06 till SysmexXE-5000
Sysmex XE-5000 är en automatiserad cellräknare som utför mätningar enligt olika
mätprinciper, de två som tillämpats i projektet är RF/DC(Radio Frequency/Direct
Current) samt Flödescytometri med halvledarlaser. RF/DC bygger på förändringar
i radiofrekventa resistansen och likspänningsresistansen. Förändringar i den
radiofrekventa resistansen (RF) ger information om densiteten i cellernas inre
(exempelvis kärnans storlek) och förändringar i likspänningsresistensen (DC) ger
information om blodcellernas storlek. Flödescytometri definierar ett mått på
cellers fysiologiska och kemiska egenskaper. Detektion av cellerna sker genom att
de bestrålas med en laserstråle samtidigt som de passerar en och en i instrumentet.
Informationen som fås ut från flödescytometri inkluderar spritt ljus och
fluorescens.
Elkvalitéproblem vid varvtalsstyrd motordrift i industrimiljö
Övertoner orsakade av varvtalsstyrda motordrifter ger problem i industrisystem. Syftet med studien är att identifiera problemen och ge rekommendationer för att undvika dem. Studien utfördes som examensjobb på KTH för konsultföretaget Ramböll. En litteraturstudie i ämnet kombinerades med elkvalitémätningar på drifter hos Sandvik Mining.Elkvalitéproblem orsakade av varvtalsstyrda motordrifter kommer till stor del av att frekvensstyrningen ger olinjärt strömuttag som, om nätet inte är tillräckligt starkt, påverkar spänningskvalitén. Problemen kan vara driftstopp, störd utrustning och ökat slitage på utrustning för att nämna några.Denna studie visar att vid ändringar i system innehållande övertoner kan framtida övertonshalter approximeras för vissa fall.
Testikelstörningar hos hingstar i Sverige
This project was initiated by a veterinarian, that at stallion performance tests for breeding during a number of years, noted breed differences in various types of testicular disorders. Therefore it was of interests to examine the proportion of testicular disorders within certain breeds. The aim with the project was in a first part to study cryptorchidism in common horse breeds in Sweden. Information about castrations of stallions performed during a 10 year period (2000-2009) was collected from computerized case records at five animal hospitals. The case records showed the numbers of castrations, normal cases and cases preformed on stallions with cryptorchidism, abdominal respectively inguinal.
Consumers' behaviour in the use of online services and the cultures effect on it-a study of Swedes and Danes use of online job databases
The thesis deals with consumers behaviour in the use of online services and the cultures effect on it. It is a study of Swedes and Danes use of online job data bases. The thesis is based on a quantitative study. A questionnaire were used sent out to 80 Swedes and 80 Danes. The theory concerns areas of online consumer behaviour, decision making and services theory as well as theories within culture in relation to services and behaviour.
Den byggda utemiljöns betydelse för människors motionsvanor : -Sett ur ett hälsopedagogisk perspektiv
AbstractIn order to investigate whether people living in Linköping city feel that the built environment affects their exercise habits, a quantitative cross-sectional study with qualitative elements was conducted. A questionnaire was the chosen approach in which information about exercise habits, education level, built environment was requested. The selected group was people working at Skatteverket in Linköping where many people work and where age, gender and education level varies. The built environment does affect the exercise habits, where major proportions choose to exercise in areas considered inviting. The majority of the respondents had a tertiary education, and many lived in the city of Linköping.
Tillförsel av använda fosforfilter påverkar inte tillväxten eller fosforupptaget hos korn
The eutrophication of inshore seas, lakes and watercourses is mainly due to leaching of nitrogen and phosphorus (P) from agriculture. Many efforts are made to reduce the lea-kage of phosphorus in Sweden and the Baltic Sea countries. Phosphorus is also a finite resource and the mining of good quality raw material gets more and more difficult. Se-dimentation dams in combination with filters is one relatively new method to separate P from run-off and drainage water from agricultural land. This study was a part of an IVL Swedish Environmental Research Institute?s project which tests the capacity and func-tion for separation of phosphorus in four phosphorus filters.
Brygder och besvärjelser : En arkeobotanisk studie av medicinalväxter och den medeltida staden Nya Lödöse
The study of medicinal plants is a popular subject that, at least in the archaeological sciences, has met a lot of criticism due to the lack of physical data. It is problematic to distinguish the medicinal plants from local flora since many herbs that were used often could be found in the nearby vegetation. The purpose of this essay is to archaebotanically analyze samples from the medieval town Nya Lödöse and compare the data with a previous analysis from the site and a literature study. The herbs meadowsweet (Filipendula ulmaria), lady?s mantle (Alchemilla sp.), sweet gale (Myrica gale), hop (Humulus lupulus), common tormentil (Potentilla erecta), St. John?s wort (Hypericum perforatum), henbane (Hyoscyamus niger), catnip (Nepeta cataria) and motherwort (Leonurus cardiaca) have been selected for closer analysis since they occur with frequency in the historical medicinal texts and in previous analysis made on the site.
Short-term responses of the field layer vegetation in a south Swedish deciduous forest after establishment of wild boars (Sus scrofa)
Inside the south Swedish national park Dalby Söderskog, wild boars (Sus scrofa L.) have been visiting since 2010. The presence of wild boars has earlier been proven to
impact both soil and vegetation characteristics, both positively and negatively. Still, there is a lack of knowledge regarding the rooting effect on the vegetation in
deciduous forest within the native range. In this study, I have compared the field vegetation collected before and after the invasion of wild boars in 74 permanent experimental plots. More specifically, the study aimed to qualify the effect of wild boar rooting on cover ratio, species richness and species composition in a temperate
deciduous forest.
Övertänjd urinblåsa- redan före operation? En observationsstudie
Introduction: Urinary retention is a common postoperative complication associated with bladder distension. Permanent damage to the bladder affects the patient?s quality of life and may lead to a lifelong inability to empty the bladder and needs of self-catheterization with the risk of urinary tract infection. Bladder distension was classified as the fourth largest health care related injury in Sweden in 2013. Bladder distension may occur before the operation starts and is more common among orthopedic patients.
Krigarkvinna i det hedniska Norden : En undersökning av två samtida skildringar av sköldmön Ladgerd i den fornnordiska religionen
The essay has its beginning in the source material that deal with ancient Norse religion before the people in the Nordic countries became Christian. The fact that there are no contemporary written or authentic sources available that can tell us something about the Norse religion during the Viking age is problematic. Archeological source materials is available, but tend to talk more about power relationships and social status than the old Norse religion and the way people practiced their faith. Medieval Christian writers are a source of knowledge of the Norse religion; however, they can only highlight the Norse religion from a Christian point of view and ways of evaluating the pagan faith, making them less reliable.The written sources of this paper are based on the written by two medieval Christian writers, Saxo Grammaticus and Snorri Sturluson. These sources are among the first to treat the Norse religion process after the introduction of Christianity in Scandinavia.
Narrativ förmåga vid afasi : analys av strategier vid gemensamt berättande
Aphasia is a linguistic impairment which affects communication and may have an impact on a person?s narrative ability. The purpose of the present study was to analyse the narrative ability in aphasia by narrative interviews with people with aphasia and their partners. The interviews were scrutinised for strategies used in joint narration involving couples where one of the spouses has aphasia. The definition of strategies was methods to cope with communicative difficulties often due to aphasia.