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Concerns regarding environmental issues such as greenhouse gas emissions and climate change have led to a shift within the research community and chemical and energy industry sectors for finding sustainable routes for producing fuels and chemicals from renewable resources, thereby minimizing our dependence on petroleum. The C3-chemical 3-hydroxypropionic acid has been identifed as a top candidate
Popular AbstractAvhandlingen tar sin empiriska utgångspunkt i en analys av hur historiskt betingade värden hanteras i samtida planering samt natur- och kulturmiljövård. Syftet är att därigenom förtydliga förutsättningarna för en hållbar landskapsutveckling avseende landskapets historiska värden. Analysen tar sin teoretiska utgångspunkt i tidsgeografi och kritisk realism. Perspektiven har använts fThis thesis is based on an analysis of how historically motivated values are treated in contemporary planning- and conservation practices. The aim is to discuss the premises of a sustainable landscape development regarding historical landscapes and heritage. The analysis takes its theoretical point of departure in time-geography and critical realism. These perspectives have been used to develop a
Various studies have highlighted older persons' problems in potentially failing to keep pace with developments in information technology and the latest technologies that prevent physical and social loss. In contrast to such studies that treat users as static and technology as changing, it's important to understand the use of technology can change over time. For example, older persons have used tec
This paper describes the RTD project FRR (Friendly Rest Room) which is partly funded by the EU in the Quality of Life programme. The objective of the FRR project is (a) to create prototypes of more user friendly rest rooms for old persons and for persons
Behandlar gipsavgjutningarnas ställning och roll i konstutbildningen och på konstmuseerna från 1700-talet till 1914.
Purpose: To investigate the inflammatory response of current and future potential vitreous substitutes in an experimental in vivo vitrectomy model. Methods: Twenty-five gauge pars plana vitrectomy was performed in the right eye of 60 pigmented rabbits, with subsequent injection of 0.5–1.0 ml of Healaflow® (cross-linked hyaluronic acid, n = 12), Bio-Alcamid® (polyalkylimide, n = 8), silicone oil (n
Digitala system för pedagogisk bedömning öppnar nya möjligheter som inte finns med papper och penna. Dessutom frigörs tid för lärarna. Vi ber därför Skolverket att tillsätta en bred arbetsgrupp för att utveckla ett digitalt system för nationella prov, skriver Agneta Gulz och Magnus Haake, båda verksamma inom utbildningsvetenskap.
This paper describes some research stimulated by a fundamental shift that is occurring in the manufacture and marketing of aero engines for commercial and defence purposes, away from the selling of products to the provision of services. The collaborating aerospace company offers contracts under which it remains responsible for the maintenance of engines which have been purchased by airlines throug
I en studie av neutralisationskapaciteten och kalkstenshalten i Sydvattens infiltrationsområde vid Vomb har fem prover från olika platser i fältet samlats in, siktats och surgjorts med saltsyra. Neutralisationskapaciteten mätt som kalciumkarbonathalt befanns variera i de olika sandproverna men var generellt hög (ca 2–14 % som vikt). Den totala massan av kalciumkarbonat i infiltrationsområdet bestäIn a study of the neutralization capacity and limestone content the artificial recharge area of the Sydvatten waterworks Vombverket in Vomb, Skåne, five samples from different locations in the area was collected, sieved and acidified with hydrochloric acid. The neutralization capacity measured as calcium carbonate content was found to vary in the different sandy soil samples but was generally high
Background and aims: In the elderly, balance and walking impairments are assumed to play an important role in causing falls. We have assessed prospectively the predictive ability of health, function and balance variables regarding falls and their location. Methods: Falls which occurred during one year in a random sample of 307 women aged 75 years and over (mean 80.8 years, response rate 74.5%) liv
We review the history of floristic studies of the parish of Stenbrohult, southern Sweden, where Carl Linnaeus was born in 1707 and spent his summers until 1728. Unfortunately, Carl Linnaeus never made a list of the wild vascular plants at his birthplace, although he mentioned at least 64 species from the parish of Stenbrohult in various manuscripts and books. However, he said that Stenbrohult was
We present an open source python based ray tracing tool that offers several useful features in graphical presentation, material properties, advanced calculations of synchrotron sources, implementation of diffractive and refractive elements, complex (also closed) surfaces and multiprocessing. The package has many usage examples which are supplied together with the code and visualized on its web pag
Does perfluorooctane sulfonate (PFOS) and perfluorooctanate (PFOA) exposure disrupt the menstrual cyclicity? The female reproductive system may be sensitive to PFOA exposure, with longer menstrual cycle length at higher exposure. PFOS and PFOA are persistent man-made chemicals. Experimental animal studies suggest they are reproductive toxicants but epidemiological findings are inconsistent. A cros
