Populärvetenskaplig sammanfattning: En mycket reaktiv spårgas i Amazonas. Växter släpper ut flyktiga organiska ämnen, som är mycket viktiga eftersom de släpps ut i stora mängder och påverkar tillverkningen av aerosoler, förändrar luftkvaliteten och fungerar som kommunikation mellan växter och herbivorer. Det här arbetet presenterar uppmätningar av sesquiterpener, vilka är flyktiga organiska partikSesquiterpenes are highly reactive terpenoids produced by vegetation and may serve many important biological functions such as acting as antioxidants and as semiochemicals (chemicals acting as messengers within or between species). Once emitted to the atmosphere, by reacting with oxidants like ozone and contributing to secondary organic aerosol formation, the emission of sesquiterpenes from vegeta

Den globala klimatförändingen är vår tids största utmaning och det största miljömässiga, sociala och ekonomiska hotet världen över. Genom att använda husdjursgödsel för produktion av förnyelsebar energi i form av biogas kan utsläppen av västhusgaser minskas, samtidigt som lokala resurser utnyttjas på ett hållbart sätt. Norge har som nationellt mål att 30 % av husdjurgödseln ska användas till produClimate change because of increased greenhouse gases in the atmosphere is widely recognized and is our times biggest environmental, social and economical threat worldwide. Converting livestock manure into a renewable energy resource such as biogas contributes to lowering greenhouse gases emissions and takes advantage of local energy resources in a sustainable way. Norway has a national goal to pro

Den förhärskande straffrättsideologin i Sverige idag är nyklassisk, där proportionalitetsprincipen, ekvivalensprincipen och humanitetsprincipen är ledstjärnor vid utdömande av straff. Principen om proportionalitet innebär att straffen ska vara rättvisa, det vill säga att lika brott ska behandlas lika i ljuset av vilka straff som ska tilldelas. Vid den stora svenska brottsbalksreformen 1989 infördThe prevailing ideology of criminal justice in Sweden is neo-classical. The principles of proportionality, of equivalence and of humanity are the guiding principles of sentencing. The principles of proportionality and of equivalence mean that the punishment should be fair, e.g. the same crime should be treated equally in the light of the penalties. In the large Swedish penal code reform in 1989 t

This thesis examines if the investment strategy “Puppies of the Dow” is a working strategy applied to a European market setting during the years 2001-2010. The purpose was to determine whether the strategy could be successfully replicated in a different market with conditions differing from the once underlying the Dow Jones Industrial Average that the investment strategy originates from. By replic

Jag kommer här att beskriva ett internetcommunity, d.v.s. en hemsida och ett forum, som hyser rum åt en bråkdel av de mer kriminellt aktiva internetanvändarna. Arbetet kommer rikta sig på att så ingående som möjligt förklara och beskriva den Anonyma Cybermänniskans aktiviteter på internet och jag har valt 4chan.org som medium för detta då hemsidans forum är välkänt för sina anonyma användare. Ras,

Today the organization, the employers and employees must be more flexible and always adapt to a changing environment. The purpose of my study is to investigate how managers interact with their employees and how they use their leadership in an international organization. In order to achieve this I have conducted qualitative interviews with six managers within the same department and international c

This Bachelor’s thesis is an ethnographic study examining the gendered norms and identities ascribed to men and women and how this impact the meaning accorded to violence against women in El Salvador. Violence is not just a physical act but must be studied in relation to the social and cultural structures that give it meaning. The central argument in this thesis is that there exists an inherent so

Soil degradation has developed into a global problem that threatens food security of millions of people by annually causing serious damage and lowering productivity of hundreds of millions of hectares of arable land. Soil conservation measures that are aimed at abating or preventing various types of soil degradation can thus hold one of the keys to solving the worsening global food crisis. This pa

This paper is an empirical study on social work in China from the gender perspective. In this paper, I will analyze how social work in China, as a relatively new career, is being interpreted and constructed under Chinese modern gender norms; at the same time, how male social workers experience work and personal life in the context of feminized social work. There is an interesting phenomenon that

As the numbers of multinational corporations (MNCs) steadily increases production becomes more and more global. Today, production can easily be moved from one corner of the world to another if corporations find this to increase their profit. This puts trade unions in front of a new challenge as they now have to find strategies in order to promote and secure labour rights on a globalized labour mar

This thesis investigates the theoretical determinants of the credit default swap spread by employing a regime-shifting approach. The variables that are examined are leverage, stock return, volatility and interest rate. A sample of 47 companies was selected with daily mid-market quotes between Jan 2008-Dec 2010 in order to proxy the CDS spread. The research was conducted with the use of a linear re

The purpose of the thesis is to measure the effect of consistent and conflicting sponsorship scenarios on brand loyalty of sponsoring firms among club supporters. The method of research is a quantitative quota sample survey study on 715 Swedish respondents. Through a deductive approach the thesis tests hypotheses. The theoretical underpinnings of this thesis are derived from Customer based brand e

When a new linear accelerator is installed at a department it is of great importance that it is carefully controlled and calibrated before being put into clinical use. This is done with the acceptance test (AT). The mechanical parameters, the beam performance and the reproducibility of the dose output are tested. For each test there is a requirement which must be fulfilled for the machine to pass

210Pb dateringsstudie på 3000-4000 meters djup gjord på sediment från Marokanska och Arabiska havet för att undersöka om djuphavssediment är en stabil miljö. Tanken med examensarbetet är att undersöka konsekvenserna för dumpning av radioaktivt avfall i havet. Vilka regler gäller och vilka problem kan uppstå. Är det säkert eller ej? Vilka dumpplatser finns det och vad har man dumpat där? Ett av målThe earth surface consists of 71% of water and 29% land. 97% of that water is contained in saline seas. More than 90 per cent of the worlds living biomass can be found in the oceans. The sea has always been a possible dumpingsite for waste produced by man. Radioactive waste is the one of the most dangerous waste of all. Since the beginning of nuclear power research dumpsites around the world has b

Den här uppsatsen handlar om installationen och kalibreringen av en halvledardetektor i en underjordisk anläggning. Avsikten men att placera sin detektor långt ner under markytan är att minimera inflytandet av den kosmiska bakgrundsstrålningen. I kalibrerings förfarandet konstruerade vi en datormodel av detektorn. Med denna datormodel kan man simulera effektivitetskalibreringen av olika strålkällaThe aim of this thesis work has been to set up an ultra low-level gamma-ray spectrometry system in the underground laboratory HADES and applying the system to measurements of activation products in tantalum discs in order to determine low neutron fluxes. The main part of the work has been the efficiency calibration of the detector and the implementation of a computermodel for Monte Carlo simulatio

"The technology for planning and delivering radiotherapy has in the last decade undergone some revolutionary development and it is now possible to perform complex treatments such as stereotactic treatments and treatments using dynamic wedges, multileaf collimator and intensity modulation. The more precise limits surrounding the PTV have made it of utmost interest to be able to verify calculat

In this study we evaluate the clinical image quality of a computed radiography system for different tube voltages. Images of anthropomorphic phantoms were produced and the quality of the images was evaluated using visual grading analysis (VGA) by a group of experienced radiologists. Two different X-ray examinations were investigated: chest PA and pelvis AP. The exposure conditions were set so that

Mat som kontaminerats av radionuklider genom till exempel radioaktivt nedfall kan ge höga stråldoser till kroppen. Nuklider med långa halveringstider kan ackumuleras i kroppen och ge en hög tidsintegrerad absorberad dos. Personer med kronisk njursvikt kan erhålla höga stråldoser efter intag av radionuklider eftersom många radionuklider utsöndras via njurarna. I den här undersökningen har vi studerHigh internal radiation doses can result from food, contaminated by radionuclides from for example nuclear fallout. Nuclides with long half-lifes can accumulate in the body and give a high time-integrated absorbed dose. Persons with end-stage renal disease can receive high absorbed doses after intake of radionuclides, since many radionuclides are mainly excreted by the kidneys. In this study the d

The atmospheric nuclear bomb test “Castle Bravo”, which detonated at the Bikini Atoll in the Marshall Islands in 1954, led to the contamination of some populated atolls. Sediment samples from one such, the Rongelap Atoll, have been examined for plutonium (239, 240, 241, 242Pu) and americium (241Am) at Lawrence Livermore National Laboratory in Californina. Plutonium was measured with Accelerator Ma

The evaluation of clinical radiographs with the European Image Criteria method has in previous work proven to be an easy and straightforward method. The main drawback with this method is the large inter-observer variation. It has been proposed that the reason for this is that the observers get “distracted” by the surrounding structures in the image and that a sort of “first impression” of the imag