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During the late Eocene there was an enigmatic enhancement in the flux of extraterrestrial material to Earth. Evidence comes from sedimentary 3He records indicating an increased flux of interplanetary dust during ca. 2 Myr, as well as two very large impact structures, Popigai (100 km diameter) and Chesapeake Bay (40–85 km), that formed within 10–20 kyr at the peak of the 3He delivery. The Massignan
The main objective of this thesis was to quantitatively estimate the gaseous exchange of carbon dioxide (CO2) and methane (CH4) between a subarctic wetland ecosystem and the atmosphere. Additionally some initial estimates of the carbon input to the atmosphere of nonmethane hydrocarbons (NMHCs) were also obtained by combining different techniques in a joint setting. The data presented were collecte
The only validated method to characterize the phenotype and to reach a definitive diagnosis of Malignant Hyperthermia Susceptibility (MHS; OMIM *145600), a pharmacogenetic disease linked to the Ryanodine 1 receptor gene (RYR1; OMIM *180901), is an invasive muscle contraction test requiring a muscle biopsy, according to the European (IVCT) protocol or to the North American (CHCT) protocol. The seri
Popular Abstract in Swedish Traditionellt sett har man tänkt sig att gradvisa förändringar i yttre miljöfaktorer leder till lika gradvisa ekosystemförändringar, men vi vet nu att ekosystem som utsätts för mänsklig påverkan eller klimatförändringar kan reagera kraftigt och abrupt genom att ett ekologiskt tröskelvärde överskrids varvid en förändring sker från en stabil ekologisk situation till en anRegime shifts in lake ecosystems can occur in response to both abrupt and continuous climate change, and the imprints they leave in palaeolimnological records allow us to investigate and better understand patterns and processes governing ecological changes on geological time scales. This thesis aims at investigating palaeolimnological records of regime shifts in lakes during the Holocene to explor
Cellular Neural Networks are characterized by simplicity of operation. The network consists of a large number of nonlinear processing units; called cells; that are equally spread in the space. Each cell has a simple function (sequence of multiply-add followed by a single discrimination) that takes an element of a topographic map and then interacts with all cells within a specified sphere of intere
Background: Osteoporosis is increasingly recognised as one of the major public health problems throughout the world and has massive socioeconomic implications. It has previously been shown that patients with severe haemophilia and not receiving any prophylactic treatment render a high risk of reduced bone density. Aims: To evaluate Bone Mineral Density (BMD) in patients with haemophilia of differ
Breast cancer is a very heterogeneous disease in terms of clinical characteristics, genetic aberrations and prognosis. In Paper I, we focused on the CD44 molecule that often is aberrantly expressed in breast cancer and is widely used as a marker for cancer stem cells. Several isoforms of the CD44 molecule were analyzed at the transcriptome level across breast tumors and the expression of individua
The aim of this dissertation is to present a history of sex education films in Sweden, from their beginnings until the late 1970s, relating the films to the changing historical context of the Swedish welfare society. Within this framework, the dissertation explores two main sets of questions. First, utilizing a contextual understanding of genre, the dissertation analyzes how the films were produce
The study examines a hitherto neglected genre in Swedish poetry of the 17th and 18th centuries: the animal epitaph. From 1670 to 1760 a considerable number of such poems were composed by several of the leading poets of the day. Besides tracing the history of the genre back to its origins in the ancient Greek epigram, I am chiefly concerned with the functions that the writing of such epigrams had i
In recent years the market for biopharmaceutical products has been increasing rapidly as a result of an increased demand for new and efficient treatments of various indications. Biopharmaceuticals are distinguished from chemical drugs by being derived from a biological origin and are hence, frequently constituting biological macromolecules. With the emergence of recombinant DNA technology, today m
Popular Abstract in Swedish Avhandlingen studerar den svenska jordbruksomvandlingen under 1800-talet. Syftet är dels att analysera böndernas roll i jordbruksomvandlingen, dels att identifiera de egenskaper som de ledande bönderna, de agrara entreprenörerna, hade. Detta görs genom att studera ansökningar om skifte och kreditmarknadens utnyttjande i tre skånska socknar, Brösarp, Saxtorp och V. KarabThis study deals with the agricultural transformation in 19th century Sweden. The aims are: firstly, to analyse the peasants' role as entrepreneurs in the transformation of agriculture, and secondly, to identify the distinctive characteristics of the agrarian entrepreneurs by studying particular aspects of entrepreneurial dealings during the agricultural transformation in Scania between 1800 and 1
Popular Abstract in Swedish
Under de senaste decennierna har innemiljön och dess relation till hälsa rönt ett allt större intresse. En viktig aspekt i detta sammanhang har varit kopplingen mellan fukt i byggnader och hälsa.
Cementbaserade material innehåller ofta överskottsvatten ("byggfukt") när de gjuts då detta är nödvändigt för deras arbetbarhet och flytegenskaper. Förutom det höga vat
In recent decades there has been an increasing interest in the indoor environment and its connections with public health. One important topic discussed has been the relation between the moisture in buildings and health.
Cementitious materials, when cast, contain excess water since this is necessary for workability and for flow properties. The pore solutions in cementitious materials, besid
Abstract In the given report, scientific results gathered at the Alfred- Wegener- Institut für Polar- und Meeresforschung (AWI) within an ScD contract are summarized. The AWI is the German large scale research facility for polar- and marine research. In January 1992 +he new research de- partment at Potsdam has been established with the section Physics und Chemistry of the Atmosphere. 1t coordinate
Popular Abstract in Swedish Akut mellanöreinflammation (akut otitis media, AOM) är en av barnaålderns vanligaste sjukdomare och en av dem som oftast föranleder antibiotikabehandling. De flesta barn får bara någon enstaka AOM, men cirka 5% av dem som insjuknar drabbas sedan av upprepade infektioner (s.k. otit-benägna barn) och blir till ett problem både för patienten, dennes familj och samhället. DAcute otitis media (AOM) is one of the most common childhood diseases and the most common causes of antibiotic treatment in small children. Most children will experience one or two episodes of AOM during preschool age but some will suffer from repeated attacks, they will become otitis-prone. Complications with severe, sometimes fatal infections such as acute mastoiditis and meningitis are nowadays
Popular Abstract in Swedish Livskvalitet och problem i dagligt liv under och efter akut leukemi eller högmalignt lymfom - ett omvårdnadsperspektiv. Syftet med avhandlingen var att undersöka hur personer med akut leukemi eller hög- malignt lymfom upplevde och hanterade de problem som uppstod i det dagliga livet i samband med sjukdom och behandling och efter det att behandlingen avslutats. StudierThe aims of this thesis were, to investigate the impact on daily living of acute leukaemia or highly malignant lymphoma when under treatment, viewed retrospectively and from a longitudinal perspective, from the point of view of the patients and their spouses, and to ascertain their view of the nursing care provided. A combination of qualitative and quantitative methods was use i.e. open-ended inte
Anaerobic digestion (AD) is a biochemical process in nature. It has been used to decompose organic waste in order to reduce environmental pollution, and to destroy pathogenic microorganisms for the protection of human and animal health. The process itself produces methane, which can then be used as an energy source. The use of AD in an integrated resource recovery system is one of the most importa
Popular Abstract in Swedish Arbetet med denna avhandling har handlat om en abnormal fosfolipid (fettämne) som bildas i kroppens celler endast när alkohol är närvarande, lipiden kallas fosfatidyletanol (PEth). För att lättare kunna förstå resultaten av våra undersökningar börjar jag med en kort bakgrund. Alla kroppens celler är omgärdade av ett membran som skiljer dem från varandra och omgivningen.Phosphatidylethanol (PEth) is an abnormal phospholipid formed exclusively by the action of phospholipase D (PLD) in the presence of ethanol. The degradation of PEth is slow and due to its accumulation in some cells the possibility to use PEth as marker of ethanol intake has been proposed. It has also been suggested that PEth mediates some of the damaging effects of ethanol on cells. This study was
Popular Abstract in Swedish En autonom agent kan definieras som ett system som med syfte att utföra uppgifter kan interagera med sin omgivning genom sina egna sensorer och effektorer. En ny arkitektur för autonoma agenter inspirerad av teorin för antecipatoriska system föreslås. Det är en hybrid arkitektur i det avseende att den kombinerar planerande förmåga, som behövs för att lösa långsiktiga prThis thesis has two main themes, autonomous agents and concepts. An autonomous agent is a system capable of interacting with its environment via its own sensors and effectors in order to accomplish some task. Arguments against both purely reactive and purely deliberative agent architectures are presented in favor for hybrid approaches. A novel hybrid approach based on the concept of anticipatory s
Popular Abstract in Swedish Bröstcancer är i dag den vanligaste cancerformen hos kvinnor i västvärlden. I Sverige insjuknar varje år drygt 6 600 kvinnor, och detta innebär att en av tio kvinnor kommer någon gång under sin livstid att utveckla bröstcancer. Antalet nydiagnostiserade fall av bröstcancer i Sverige har under de senare åren ökat, vilket bl.a. tros bero på den ökade medelåldern i befolknIn recent time breast cancer has become the most common form of female cancer in the western world. It has been estimated that the lifetime risk of women falling ill from the disease is 10%. The number of patients diagnosed each year has been increasing steadily since the 1970s. In 2002 the number of Swedish women diagnosed with breast cancer was 6,600, constituting every third female cancer diagn
