High resolution electron energy loss spectroscopy has been used to determine how NH3 adsorbs on the Si(100)2 × 1 surface at 300 K. We find that the NH3 molecules dissociate into NH2 and H on adsorption. Combination bands, overtones and double losses for the Si---NH2 group are observed. An anneal to 800 K is sufficient to dissociate the adsorbed NH2 groups while the majority of the Si---H bonds rem

Den utbildningsvetenskapliga forskningen har ofta en normativ ton och lanserar idéer om hur skolan borde vara, hur undervisning borde bedrivas, hur människor borde lära och om hur skolor borde ledas. Utbildningsvetenskaplig forskning skulle tjäna på att vara mindre normativ och mer empirisk och analytisk. I doktorsavhandlingen En riktig rektor. Om ledarskap, genus och skolkulturer, som Josefin Brü

Local vibrational mode (LVM) spectroscopy has been used to study the evolution of vacancy-oxygen-related defects (VOn) in the temperature range 300-700 degrees C in carbon-lean Cz-Si samples irradiated with MeV electrons or neutrons. New experimental data confirming an attribution of the absorption bands at 910, 976 and 1105 cm(-1) to the VO3 complex are obtained. In particular, a correlated gener

Objectives: The primary aim was to compare the working capacity in patients with continent urinary diversion with a control group. Secondary aims were to assess the changes in electrolyte and acid-base homeostasis and the functional status during strenuous physical activity, and finally, the well-being in the two groups. Methods: Eleven patients who had undergone radical cystectomy and continent c

Popular Abstract in Swedish I avhandlingen diskuterar jag hur materiell kultur förändras när den inlemmas i lokala sammanhang. Diskussionen utgår från gravar, hällristningar och bronsföremål i Sydskandinavien under perioderna senneolitikum och bronsålder, 2350-500 f. Kr. En viktig utgångspunkt i avhandlingen är ett praxisperspektiv. Jag understryker att föremåls och monuments betydelser var beroeIn the thesis the author discusses how materiel culture changed when it was incorporated into a local society. The discussion is based on graves, rock carvings and bronze items in south Scandinavia during the periods Late Neolithic and Bronze Age, 2350-500 BC. The thesis? starting point is a praxis perspective. The meaning of artefacts and monuments depended upon how they were used. The use of th

Background: Visceral ischaemia and cytokine release are early stages in the development of shock and multiorgan failure. Because of lack of methods to measure anaerobic metabolism or visceral hypoxia in the early phase, diagnosis is not usually established until shock and organ failure are evident. Methods: Nineteen patients were studied postoperatively after major abdominal gastrointestinal surge

One hundred twenty-eight patients with idiopathic carpal tunnel syndrome were evaluated before surgery and 3 and 6 months after unilateral endoscopic carpal tunnel release. The variables analyzed included patient demographics, symptoms and signs, activities of daily living (ADL), sensibility and strength measurements, preoperative distal motor latency of the median nerve, operating surgeon, postop

The cytokine transforming growth factor beta-1 (TGFbeta1), was transfected into a TGFbeta1-negative rat colon carcinoma. The growth of isografts of TGFbeta1-expressing tumors was compared to that of vector control transfectants. The TGFbeta1 transfectant grew significantly more slowly after intrahepatic isografting than did vector control and wild-type tumors. The TGFbeta1-transfected tumor tissue

It is the overall aim of this article to investigate theoretically how spatial embeddedness of learning and knowledge creation might be challenged by alternative organisational forms (i.e. temporary organisations). The article presents development coalitions as an alternative to projects as a form of temporary organisation. They are potentially able to combine the promotion of radical change with

PURPOSE: CT and MR imaging are appropriate modalities for imaging of the liver. Contrast media are used to obtain a greater difference in attenuation and signal intensity, respectively, between normal liver tissue and focal lesions. However, no studies have attempted to determine whether physiological nutritional status of the liver during fasting is of importance for the native signal of normal l

Breast cancer is the most common malignancy in women in the Western world with about 10% of women developing breast cancer during their lifetime, of which one third will eventually succumb to the metastatic form of the disease. Breast cancer arises from the epithelial cells of the breast mammary gland, but the mechanisms involved in tumor initiation, progression, and metastasis are still not fully

En enkätundersökning med doktorander i samhällsvetenskaplig och humanistisk/teologisk fakultet.

Primär psykogen yrsel, i form av ångestsyndrom, och sekundär ”otogen ångest”, efter en period med vestibulär sjukdom, är bland de vanligaste orsakerna till långdragna yrselbesvär hos patienter i arbetsför ålder. Utan behandling kan besvären bli kroniska och leda till till långvarigt lidande. Ju tidigare sjukdomen upptäcks, desto bättre blir effekten av behandling.