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This thesis deals with students' constructions of mathematical knowledge in the case of fractions from a radical constructivist perspective. Fractions are the first more abstracted mathematics met by students. Even if they have a rich experience of sharing and partitioning things in their everyday life dealing with fractions often give rise to difficulties in school. The thesis consists of two p
Popular Abstract in Swedish Elakartade (maligna) blodsjukdomar uppstår i den blodbildande benmärgen, vilken är innesluten i hålrummen i de skelettdelar som kan sägas täckas av en badmössa och en gammaldags baddräkt. En av de celltyper som bildas i benmärgen är plasmacellen, en vit blodkropp som utgör mindre än 2% av benmärgscellerna och som tillverkar specifika antikroppar vid infektioner. Vid monAcquired genetic changes have proved to be of diagnostic and prognostic importance in different hematologic malignancies as well as in some solid tumor types. However, although multiple myeloma (MM), an incurable disease, and its proceeding stage monoclonal gammopathy of undetermined significance (MGUS) are quite common, little is known about the karyotypic features of these plasma cell dyscrasias
Transplantation of embryonic dopaminergic neurones can ameliorate symptoms in Parkinson’s disease, but a major obstacle for clinical transplantations to overcome is the low survival (typically 5-10%) of implanted nigral neurones. If cell death in nigral grafts can be prevented, less embryonic tissue would be needed per transplantation session and hence more patients could receive intracerebral gra
Popular Abstract in Swedish Bröstcancer är den vanligaste cancerformen hos västerländska kvinnor. I Sverige kommer var tionde kvinna att drabbas av bröstcancer, vilket motsvarar drygt 5000 kvinnor om året. Dödligheten i bröstcancer är 30%. Detta innebär att en tredjedel av de som drabbas kommer att dö av sin sjukdom. Det är dock inte själva tumören i bröstet som dödar eftersom denna i princip alltBreast cancer is one of the most common cancer forms in the industrialized world. Only in Sweden, nearly 6000 women are diagnosed with breast cancer each year and 1/3 of them eventually succumb to the disease. Wnts are a family of genes that have been implicated in many human tumours, so far mainly studied in colorectal cancer where activated Wnt signalling occurs in a vast majority of tumours. Wh
Popular Abstract in Swedish Bukspottkörteln, pancreas, är ett viktigt organ för ämnesomsättningen. Dess viktigaste funktioner är att tillverka enzymer och bikarbonat som utsöndras till tolvfingertarmen, duodenum samt hormoner som utsöndras till blodbanan. De viktigaste enzymerna är amylas som bryter ned olika sockerarter och stärkelse, lipas som bryter ned fett och trypsin som bryter ned proteinerThe pancreas is a central organ in the digestion of food as well as in glucose metabolism. Its two major functions are exocrine and endocrine secretion. These are meticulously regulated processes that depend on hormonal response to gastrointestinal contents and blood glucose levels through feedback mechanisms, but also to the status of pancreas in health and diseases. The present thesis aimed at f
Popular Abstract in Swedish Vi kommer dagligen i kontakt med läkemedel i olika former, antingen som den kräm som vi smörjer in vårt onda knä eller Treon somliga tar på söndagsmorgon. Många av dessa produkter kan se enkla ut men är ofta resultatet av mycket forskning och för att förstå hur arbetet som utgör den här avhandlingen är kopplat till en Treo, så tänkte jag att vi ska börja med att förklarAn important issue within the pharmaceutical world today is the increasing number of poorly soluble drugs. These often show a low bioavailability and a susceptibility to varying conditions in the intestine. Hydrophobically modified poly (acrylic acid) (HMPAA), commercially available as Pemulen TR2, has shown promising abilities to control the release of especially poorly soluble substances. In thi
Popular Abstract in Swedish Pankreascancer, cancer i bukspottkörteln, är den fjärde vanligaste orsaken till död i cancer och årligen insjuknar cirka 1000 patienter i Sverige. Överlevnaden är kort med en 5-årsöverlevnad på endast 6 procent. Pankreascancer orsakar, förutom lidande, också betydande kostnader för såväl den medicinska vården, som förluster för samhället, exempelvis i form av förtida döBackground: Pancreatic cancer is the fourth leading cause of cancer-related death. Only about 6% of patients are alive 5 years after diagnosis. One reason for this low survival rate is that most patients are diagnosed at a late stage, when the tumor has spread to surrounding tissues or distant organs. Less than 20% of cases are diagnosed at an early stage that allows them to undergo potentially cu
Hjärntumör inklusive glioblastom.Glioblastom är den vanligaste sortens hjärntumör bland vuxna och samtidigt den mest elakartade. Glioblastom drabbar cirka 550 personer årligen i Sverige. När tumören upptäcks är behandlingen först operation för exakt diagnos och med syfte att avlägsna så mycket som det går av tumören, utan att orsaka skada för patienten, annars görs en diagnostisk biopsi. StandardAbstractBackground: Glioblastoma is the most common malignant brain tumor. Operation with maximal resection, if feasible, otherwise biopsy followed by radiotherapy and chemotherapy with temozolomide is standard therapy. The prognosis remains poor, with median overall survival being 15 months despite therapy. Improved monitoring and treatment response assessment will be important when seeking to im
Sedan 1970-talet har antalet rapporterade cancerfall dubblerats, dels på grund av förändrade levnadsvanor och dels på grund av bättre screeningmetoder som upptäcker cancern i tidigt skede. Tidig upptäckt av cancern i kombination med utvecklad cancerbehandling har bidragit till att risken för att avlida av cancer har minskat. Cancerbehandling sker huvudsakligen genom operation, strålbehandling elle
Microsoft PowerPoint - 2016 Project results_JLR EPR and Closing Material Loops LESSONS FROM ENERGY EFFICIENT LIGHTING PRODUCTS Issues with EoL lamps: hazardous waste • Small, light and breakable • Risk from hazardous materials leaching at end of life • Net cost for collection and recycling Issues with EoL lamps: resource efficiency • Energy efficient lamps have small amounts of critical materials
https://www.iiiee.lu.se/sites/iiiee.lu.se/files/richter_epr_lund_10_october_2016.pdf - 2026-06-25
Sammanfattning Allt fler människor blir infertila. För att lösa problemet att få ett genetiskt barn har flera länder i vår omvärld börjat använda och tillåta surrogatmödraskap. I Sverige har åsikterna tidigare varit att det varit en allt för oetisk metod. Under årens lopp har dock värderingarna ändrats något och idag pågår en livlig debatt om altruistiskt surrogatmödraskap ska bli tillåtet. AltruiSummary Infertility is increasing. Because of this several countries around the world have begun to allow surrogacy as a means of procuring a genetic child. In Sweden, the previously held view was that surrogacy is unethical. However, over the years societal values have begun to gradually change. Presently there is a lively debate concerned with allowance of altruistic surrogacy. Altruistic surrog
Understanding the spatiotemporal dynamics of dissolved organic carbon (DOC) is essential for predicting aquatic carbon fluxes and managing water quality in boreal catchments. Traditional DOC modelling approaches are limited in their ability to represent seasonal dynamics, event-driven responses, and riparian-zone contributions. Here, we evaluate the performance of the Krycklan-HYPE model in simula
In England saltmarshes account for less than 0.5% of the land area; however they have a very high biodiversity value and provide significant economic and social services. Climate change, continuous coastal urbanisation and port development are serious concerns for coastal protection planners, city councils and state government agencies interested in balancing the social, economic and environmental
In 2015 the EU introduced Directive 2015/720 on the reduction of the consumption of lightweight plastic carrier bags creating the first transnational agreement on plastic bag issue in the world. This Directive sets the scope within which Member States will design their own policies in order to reach a significant reduction in the plastic bag consumption over the following years. Greece is one of t
Barnets bästa ska vara avgörande för alla frågor om vårdnad, boende och umgänge. Barnets åsikter är en viktig del i bedömningen och som regel får barn, om det inte bedöms som olämpligt, komma till tals. Det är dock långt ifrån självklart att deras åsikter faktiskt påverkar utgången. Ett barn som motsätter sig att träffa en förälder kan ändå få umgänge beslutat av domstol trots att umgänge enligt lThe best interests of the child should be decisive in all matters concerning custody, residence and visitation. The child’s views are an important part of this assessment, and children are generally given the opportunity to express their opinions, unless it is deemed inappropriate. However, it is far from certain that these opinions actually influence the outcome. Even if a child opposes visiting
Environmental, economic and social sustainability This hub strengthens LUSEM’s collaboration with external actors to enhance our contribution to the sustainable transformation. The LUSEM Sustainability Hub is our platform for driving sustainable transformation through meaningful collaboration between partners, researchers, teachers, and students. By connecting real sustainability challenges with r
https://www.lusem.lu.se/collaborate/collaborate-our-students/future-hubs-lusem/lusem-sustainability-hub - 2026-06-24
The LUMID programme is proud to receive applications from a large group of motivated and ambitious applicants. With over 1000 applications each year for the limited 40 available spots, competition is fierce. The following information will hopefully assist your planning well in advance for a successful future application with us. The LUMID programme has three main assessment criteria:Academic grade
https://www.keg.lu.se/en/education/programmes-and-courses/masters-programmes/lumid/application-assessment - 2026-06-23
Statement of purpose, CV and other documents After submitting your electronic application, you must complete your application with documentation of your previous studies and English abilities. For some of the Master's programmes, you must also submit a Statement of Purpose and a CV in your application package. Programme specific documents?Programmes requiring a Statement of Purpose and CV with you
https://www.lusem.lu.se/study/application-and-admission/supporting-documents-application-masters-programmes - 2026-06-23
1 Report on SASNET An Evaluation commissioned by SASNET March 17th, 2015 Neil Webster and Pamela Price 2 Contents Acronyms ....................................................................................................................................................... 3 Introduction ..............................................................................................................
https://www.sasnet.lu.se/sites/sasnet.lu.se/files/external_evaluation_2015.pdf - 2026-06-25
The Mo/Cu-dependent CO dehydrogenase from O. carboxidovorans is an enzyme that is able to catalyse CO oxidation to CO2; moreover, it also expresses hydrogenase activity, as it is able to oxidize H2. Here, we have studied the dihydrogen oxidation catalysis by this enzyme using QM/MM calculations. Our results indicate that the equatorial oxo ligand of Mo is the best suited base for catalysis. Moreov
