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Popular Abstract in Swedish Alla levande organismer behöver kväve för att producera till exempel proteiner och DNA. I jorden förekommer kväve grovt indelat i två huvudformer, organiskt och oorganiskt. Mikroorganismer har förmågan att bryta ner det organiska kvävet till oorganiskt i en process som kallas för mineralisering. Växter tar i stort sett bara upp oorganiskt kväve och är beroende av den miMicroorganisms in forest ecosystems normally recycle nitrogen (N), such that gaseous losses and leaching are limited. Mobilization of organic N, including microbial N, and immobilization of inorganic N, especially NH4+, are the quantitatively most important N transformation processes. Various factors influence their rates, e.g. the amount of carbon and nitrogen, temperature, moisture, and the micr

“The death of distance” has become the battle cry of a modern generation of managers, policy makers and scientists who embrace the new globalized economy and its promise of frictionless exchange across the world. While highly influential, this view does not, however, stand unchallenged. Over the last 15 years, there has been a growing interest in the geographical clustering of industry. Well-known

John Kingdon's Multiple Streams Framework (MSF) constitutes a powerful tool for understanding the policy process, and more specifically, agenda-setting, through three separate streams: problems, policies and politics. This article argues that the MSF would benefit from further development of the problem stream. It introduces a clearer conception of agency into the problem stream by suggesting the

Integrated Assessment (IA) models aim at providing information- and decision-support to complex problems. This paper argues that uncertainty analysis in IA models should be user-driven in order to strengthen science–policy interaction. We suggest an approach to uncertainty analysis that starts with investigating model users’ demands for uncertainty information. These demands are called “uncertaint

Biological applications of ion beams have recently become a new important research field using single ion hit facilities to study individual living cells and their response to the hit of a counted number of ions. One motivation is the search for a better understanding of the fundamental processes taking place in cells and organs as a result of irradiation. Another comes from the increasing interes

We analyze the Ce3+-Pr3+:Y2SiO5 emission spectra obtained under selective excitation of the two Ce3+ sites in Y2SiO5 and we show clear evidence of direct energy transfer from Ce3+ to Pr3+. Energy transfer microparameters were calculated from the experimental spectral overlap between the Ce3+ emission and the Pr3+ and Eu3+ absorptions from which, the transfer mechanisms Ce3+-> Pr3+ are concluded to

Popular Abstract in Swedish I »operatörens blick« beskrivs ett projekt där möjligheter för IT-stöd i erfarenhetsöverföring undersökts inom ett område där konfrontationen mellan datorisering och yrkeskunnande är särskilt tydlig - operatörsarbete i processindustrin. Driftsstörningar av olika omfattning är ett kontinuerligt inslag i operatörsarbetet och snabba förändringar i risknivå är en central deStudies in process control automation show that manual control skills are important in handling situations where the automatic control system fails. The fact that these skills are particularly difficult to maintain and develop in automated production environments is usually described as one of the ironies of automation. This work explores new roles for computer support in developing and maintainin

This thesis deals with feedback control using two different sensor types, force sensors and cameras. In many tasks robotics compliance is required in order to avoid damage to the workpiece. Force and vision are the most useful sensing capabilities for a robot system operating in an unknown or uncalibrated environment. An overview of vision based estimation, control and vision/force control is give

Popular Abstract in Swedish Stroke utgör den tredje vanligaste dödsorsaken i västvärlden och är dessutom huvudorsak till långvarigt handikapp hos vuxna individer. Det stora antalet överlevande men handikappade individer utgör ett omfattande problem för samhället inte bara i form av ekonomiska resurser utan även vad gäller personliga trauma. Den kliniska termen stroke omfattar patologiska tillståndStroke is the most common life-threatening neurological disease and ranks as the third leading cause of death in major industrialized countries. It is also the leading cause of serious long-term disability and about sixty percent of survivors have disabilities in their extremities. Recovery of certain neurological functions occurs over time, which has been attributed to endogenous restorative proc

The aim of this thesis was to develop and apply self-registered and observed measures of physical function in people with arthritis in the lower extremity. In Paper I, 181 subjects from the Swedish Knee Arthroplasty Register who were satisfied with their primary knee arthroplasty were studied. 44% of the medical records included reports of pain in the replaced knee at the same time as the patient

Popular Abstract in Swedish Det blir allt vanligare att man ersätter förlorade och skadade kroppsdelar med ett biomaterial (vanligtvis ett metall eller polymer implantat). Exempel på vanliga användningsområden är; suturer, kärl, hjärtklaffar, pacemakers, katetrar, ledproteser, fixationsskruvar för skelett och konstgjorda tänder samt kapslar för långsam frisättning av medicin. Trots det rutinmässigThe biological response to different implanted biomaterials vary. The relative importance of factors in the material and host for this variation are at present incompletely known. The variation in the cellular response to specific proteins and the rapid adsorption of proteins to surfaces exposed to biological environments has created the hypothesis that the cellular interactions with biomaterials

Carotid endarterectomy (CEA) is a standardized surgical procedure and is the third most common vascular surgical procedure in Sweden. To improve the quality of pre- and postoperative care for patients undergoing elective CEA, a standardized care plan (SCP) was developed and implemented during Spring of 2007 at a vascular clinic in Sweden. In order to spread light on obstacles and possibilities in

Second-generation bioethanol produced from various lignocellulosic materials, such as wood, agricultural or forest residues, has the potential to be a valuable substitute for, or a complement to, gasoline. One of the crucial steps in the ethanol production is the hydrolysis of the hemicellulose and cellulose to monomer sugars. The most promising method for hydrolysis of cellulose to glucose is by

Popular Abstract in Swedish En burk målarfärg som har lämnats bortglömd, en senapsflaska som länge har stått upprätt i ett kylskåp eller ett nyinköpt filmjölkspaket som precis ska öppnas. Det finns många vardagliga situationer där vi stöter på separation av fasta partiklar från vätskan i så kallade suspensioner. Separationsprocessen kallas sedimentering och är den tillämpning som genomgående motivA consistent theme throughout this thesis is quasilinear partial differential equations (PDEs) appearing in one-dimensional models of sedimentation for solid-liquid separation of suspensions. We mainly focus on continuous sedimentation in so-called clarifier-thickeners (CTs), which are found in mineral processing and wastewater treatment. In addition to complications with shocks and non-unique sol

Sweden is the only Scandinavian country that uses closed treatment institutions based on coercive measures within the child welfare system, on a large scale, for the education and treatment of young criminal offenders and drug users. In Sweden there are in 2002 some 30 “homes for specialized supervision” of varying sizes and degrees of specialization – all run by a national board of institutional

Understanding 3d human interactions is fundamental for fine grained scene analysis and behavioural modeling. However, most of the existing models focus on analyzing a single person in isolation, and those who process several people focus largely on resolving multi-person data association, rather than inferring interactions. This may lead to incorrect, lifeless 3d estimates, that miss the subtle hu

The aim of this study was to evaluate the degree of joint fusion and bone formation in dogs undergoing atlantoaxial arthrodesis after removal of articular cartilage associated or not to implant homogenous or autogenous cancellous bone. Twelve dogs, weighing between 8 and 12kg were randomly divided into three groups. Group I (GI) performed only the removal of joint cartilage and joint immobilizatio

The impact of cyberbullying on mental health is a significant concern among adolescents, yet there is limited research on the neurophysiological markers of cyberbullying. This study aims to address this by exploring whether resting state electroencephalography (EEG) power, among traditional frequency bands (delta, theta, alpha, beta), predicts cyberbullying experiences over time. Participants (N =

This project documentation presents an overview of the design process of the master thesis of Elisabeth Langer and Lisa Laugs at Lund University, School of Industrial Design. The topic of the master thesis was rainwater harvesting, which was first explored through extensive research and analysis. This topic is highly relevant as several aspects such as population growth, urbanisation, and climate

We present an improved numerical scheme for numerical simulations of low Mach number turbulent reacting flows with detailed chemistry and transport. The method is based on a semi-implicit operator-splitting scheme with a stiff solver for integration of the chemical kinetic rates, developed by Knio et al. [O.M. Knio, H.N. Najm, P.S. Wyckoff, A semi-implicit numerical scheme for reacting flow II. St