Search results

Background Ozone is a pollutant known to cause adverse effects on human health. It is formed by reactions between nitrogen oxides (NOx) and hydrocarbons under the influence of sunlight. In urban areas ozone is consumed oxidating nitrogen oxide (NO) to nitrogen dioxide (NO2). Despite the potential to cause adverse health effects, the local spatial distribution of ozone and the relationship between

Background: Retrospective comparative studies suggest a survival benefit after complete local treatment of recurrence (LTR) in renal cell carcinoma (RCC), which may be largely due to an indication bias. Objective: To determine the role of LTR in a homogeneous population characterised by limited and potentially resectable recurrence. Design, setting, and participants: RECUR is a protocol-based mult

Context. Tidal interactions between massive galaxies and their satellites are fundamental processes in a universe with a λ cold dark matter (λ CDM) cosmology, and they redistribute material into faint features that preserve records of past galactic interactions. While stellar streams in the Local Group impressively demonstrate satellite disruption, they do not constitute a statistically significan

Abstract in Undetermined Previous work has presented contrasting views of the last glaciation on Jameson Land, central East Greenland, and still there is debate about whether the area was: (i) ice-free, (ii) covered with a local non-erosive ice cap(s), or (iii) overridden by the Greenland Ice Sheet during the Last Glacial Maximum (LGM). Here, we use cosmogenic exposure ages from erratics to reconc

We consider a semimartingale X which is reflected at an upper barrier T and a lower barrier S, where S and T are also semimartingales such that T is bounded away from S. First, we present an explicit construction of the reflected process. Then we derive a relationship in terms of stochastic integrals linking the reflected process and the local times at the respective bathers to X, S, and T. This r

Objective. Our hypothesis states that the reactivity of the cutaneous microcirculation is reduced in patients with hypertension compared with healthy subjects. The objective was to verify the hypothesis by measuring microvascular function in hypertensive patients. Design. The study was a controlled trial with two arms: 15 hypertensives and 15 normotensives were enrolled, aged 30-60 years, and in h

This article deals with Gerhard Oestreich's concept of 'Sozialdisziplinierung' and its possible status as a challenger to the two main schools within the Swedish state of research concerning the Early Modern state-building process. These main streams in Swedish historical research concists of the Interventionists, who argue for the state's more or less brutal intervention in the local autonomous s

OBJECTIVES:: Individuals with chronic pain often report increased pain sensitivity compared to pain free individuals, so it is crucial to determine if and how different pain characteristics influence or interact with pain sensitivity. An alternative to experimental pain sensitivity testing is the self-reported pain sensitivity questionnaire (PSQ), that captures pain sensitivity in various body are

Solen och alla stjärnor som vi ser på natthimlen tillhör vår Galax - Vintergatan. Vintergatan är en spiralgalax med en utbuktning i dess centrum - bulben. För att förstå hur Vintergatan blev till måste man ha en bra uppfattning om bulbens ursprung. Under många år trodde vi att vi visste hur bulben och hela Galaxen hade formats, men ny teknologi, förbättrade teleskop och instrument samt simuleringaContext. The formation and evolution of the Galactic bulge and the Milky Way is still a debated subject. Observations of, e.g., the X-shaped bulge, cylindrical stellar motions and young stars in the bulge have suggested that the bulge formed through secular evolution of the disk and not through gas dissipation and/or mergers, as thought previously.\\ Data. We use high-resolution optical spectra of

Ecotourism is the concept of traveling responsibly to natural areas where the environment and the well-being of the local people are sustained, where the economic profit is reinvested in the area and where knowledge is communicated to decrease visitor impact and maintain the local environment. Ecotourism is the fastest growing segment of the global tourism industry and therefore it is important to

Populärvetenskaplig sammanfattning: Sahel kallas regionen som ligger mellan Saharaöknen i norr och den gröna savannen i söder. Det sträcker sig från Atlanten i väst till Röda havet i öst. Området karakteriseras av låg och oregelbunden nederbörd. Torka och svält har drabbat stora delar av området i flera omgångar. Den stora torkan 1984 lever kvar i folks minne som en fruktansvärd katastrof. SatellRecent research has shown significant increasing trends in NOAA NDVI for the Sahel region during the period of 1982-1999. These observations could indicate that the amount of vegetation in the region is increasing. The changes could be interpreted as a recovery from the Sahelian droughts during the 1970´s and 1980´s. However, there are currently large uncertainties as to which processes that have

Lunds Klimatallians har ambitioner att hjälpa sina medlemmar arbeta mot en hållbar utveckling och letar efter nya metoder för att förbättra sin insats. Lunds Klimatallians är en organisation som startades i initiativ av Lund Kommuns miljöstrategiska enhet i syfte att bidra till Sveriges genomförande av FN:s klimatmål. Målen ska leda världen mot en hållbar utveckling men i dagsläget finns hållbarheLund's Climate Alliance was initiated 2010 by the municipality of Lund, in southern Sweden, to support local climate adaptation and mitigation efforts. The purpose of this paper is to investigate what each member of Lund's Climate Alliance believes will be necessary to realize sustainability goals particular to their organization in the future. The study thereby points to new topics, activ

Abstract Author: Charlotte Edvinsson Title: I support myself on welfare-A qualitative study of social assistance recipients idea of how society perceive them Supervisor: Agneta Hedblom Assesor: Torbjörn Hjort The need of social assistance has increased dramatically during the 1990s. In large due to the unemployment. A large number of studies have been made which look into how the clients have ex

Popular Abstract in Swedish För att styra, övervaka och utvärdera processer inom processindustrin, samlas stora mängder data från mätgivare i olika delar av processen. Den tekniska utvecklingen inom mätteknik- och datorområdet har gjort det möjligt att mäta många olika storheter. Inom processindustrin kan antalet vara mycket stort; hundratals och ibland tusentals värden loggas kontinuerligt med inIn this work, various aspects of multivariate monitoring and control of wastewater treatment operation are discussed. A number of important difficulties face operators and process engineers when handling online measurements from wastewater treatment processes. These include, for instance, a high number of correlated measurement variables, non-stationarities, nonlinearities and multiscale process b

The acoustic emission that is detectable in the forming of complex thin part plates contains information about the quality of the pressed plates. The information can be used as process control and to filter out advanced thin plates with defects such as cracks. The article describes the results obtained in a try-out pressing process in special developed punch-die pairs with different pressing

Populärvetenskaplig sammanfattning: En sedimentsekvens från sjön Svartkälstjärn i Västerbotten provtogs för pollen- och sporanalys samt kolpartikelanalys. Sedimentens ålder bestämdes med 14C-dateringar och spår av radioisotopen 137Cs, som indikerar modern tid då de återspeglar provsprängningarna av kärnvapen under senare delen av 1900-talet. Dateringarna visar att sedimentationen i sjön började föA 2.1-m sediment sequence retrieved from Lake Svartkälstjärn, located at 260 m a.s.l. in the province of Västerbotten, Sweden, was subsampled for pollen and spore analysis, charcoal analysis, and influx calculations. The aim was to establish the local environmental development during the Holocene with focus on forest composition, fire frequency, soil erosion, aquatic production, and human impact.

PURPOSE: The dissertation addresses the choice of mode of transport, and the selection process, for local travel to regional rail service, with special emphasis on the significance of the bicycle. APPROACH TO THE PROBLEM AND METHODOLOGY: Choice of mode can be viewed as a 2-stage selection process in which different alternatives are rejected at different points in time. First there is a sorting amo

With timely allocated movement phases, mobile organisms can match their space-use with the seasonality of the environment and thereby optimise their resource utilisation over time. Long-distance avian migrants are known to move with the seasonal dynamics on an annual basis, but how individuals respond to seasonality within their tropical non-breeding range has been less studied. Here we analyse th

It is well known that marine fish dynamics relate with climate variability, and predicting future population developments have become increasingly urgent with on-going climate change. One approach in widespread populations is to study how individuals from different parts of the distribution area respond to climate, thereby testing for potential resilience in terms of local adaptions against enviro