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Från Rudbeck till Mandelbrot : Identifikation, imitation och komparation i nutidsvetenskap

InledningDet är kväll den 15:e januari 2004. Idag var det den andra dagen i Mijailovic-rättegången i Stockholms tingsrätt. Mijailovic försvarar sig, men inte genom att svara på frågor. Han representerar det moderna. Hans psykos, säger han, fick honom att få panik, höra röster och döda en utrikesminister. Om han fått träffa en läkare skulle allt varit annorlunda. Sedan början av 1800-talet har dett

Rebleeding and endometrial growth in women with postmenopausal bleeding and endometrial thickness <5 mm managed by dilatation and curettage or ultrasound follow-up: a randomized controlled study

OBJECTIVE: To compare the frequency of rebleeding and endometrial growth during a 12-month follow-up period between women with postmenopausal bleeding and an endometrial thickness < 5 mm managed by dilatation and curettage, and those managed by ultrasound follow-up. DESIGN: Consecutive women with postmenopausal bleeding and an endometrial thickness < 5 mm were randomized to ultrasound follow-up af

Grafting dopamine neurons in Parkinson's disease: do stem cells have a role in the future?

Parkinson's disease (PD) patients display motor symptoms, e.g. tremor, rigidity and bradykinesia, largely due to a dramatic loss of dopaminergic neurons in the substantia nigra. Grafts of human embryonic dopamine neurons can survive in the striatum and reduce several of the motor symptoms. Several lines of evidence suggest that a crucial threshold of surviving dopaminergic neurons must be exceeded

High resolution modelling of atmosphere-canopy exchange of acidifying and eutrophying components and carbon dioxide for European forests

The Integrated Deposition Model (IDEM) was improved by incorporating a novel multilayer biochemical dry deposition module for gases. The aerosol and base cation deposition module was adopted from IDEM. For evaluation of primary and ecosystem productivity, carbon respiration schemes were included. The resulting Framework for Atmosphere- Canopy Exchange Modelling (FACEM) was then evaluated by the ca

Kinetics of the reduction of the Rh(111) surface oxide: Linking spectroscopy and atomic-scale information

The reduction of the surface oxide on Rh(111) by H-2 was observed in situ by scanning tunneling microscopy (STM) and high-resolution core level spectroscopy (HRCLS). At room temperature, H-2 does not adsorb on the oxide, only in reduced areas. Reduction starts in very few sites, almost exclusively in stepped areas. One can also initiate the reduction process by deliberately creating defects with t

Size matters: extraordinary rodent abundance on an Australian tropical flood plain

Published estimates of the total biomass of natural populations of mammalian herbivores generally have ignored small-bodied taxa (especially, rodents). Including such taxa may dramatically change our understanding of total biomass and energy flow in such systems. Dusky rats (Rattus colletti) are small (up to 210 g) native Australian mammals, and our 5-year mark-recapture study on a tropical flood

Bacterial virulence in urinary tract infection

Bacteriuria is associated with acute disease conditions of varying severity.48 and 62 Consequently, the definition of bacterial virulence for the urinary tract depends on the end-point chosen. Acute pyelonephritis is characterized by fever, flank pain, and general malaise. Laboratory findings include pyuria (leukocytes in the urine), elevated acute phase reactants in serum (C reactive protein [CRP

Ultra-wideband communications using hybrid matched filter correlation receivers

Transmitted-reference (TR) schemes for time-hopping impulse radio (TH-IR) ultra-wideband (UWB) communications allow the use of simple receiver structures that are able to combine energy from different multipath components without channel estimation. A conventional TR receiver consists of a simple delay-and-multiply operation combined with an integrator. On the downside, it shows a performance loss

Participating in Synchronous Online Education

Popular Abstract in Swedish Behovet av utbildning ökar eftersom dagens anställda förväntas vara välutbildade och fortlöpande förkovra sig. Distansutbildning är ett kraftfullt sätt att möta detta behov. Nätbaserad utbildning, vilket enkelt kan definieras som distansutbildning via internet, är den vanligaste typen av distansutbildning. Inom nätbaserad utbildning är asynkron (fördröjd) kommunikation,There is an increasing need for education since the workforce of today is expected to be highly educated and continuously learn. Distance education is a powerful response to meet the growing need for education. Online education, here concisely defined as distance education mediated online, is the most common type of distance education. It mainly relies on asynchronous communication although it is

Graded effects of oxygen and respiratory inhibitors on cell metabolism and spontaneous contractions in smooth muscle of the rat portal vein

The basis for the hypoxic relaxation of spontaneous activity in the rat portal vein was investigated by comparing responses to oxygen and the respiratory chain inhibitors amobarbital and cyanide. With the inhibitors, O2 consumption (FO2) is uniformly decreased throughout the cell mass, and thus O2 gradients in the tissue are avoided. Hence the effects are not to be attributed to all-or-none inhibi

Phase Segregation in AlInP Shells on GaAs Nanowires

We have studied morphology and phase segregation of AlInP shells on GaAs nanowires. Photoluminescence measurements on single core- shell nanowires indicated variations in the shell composition, and phase segregation was confirmed by cross-sectional scanning transmission electron microscopy on 30 nm thin slices of the wires. It was discovered that Al-rich domains form in the á112ñ directions where

Performance evaluation of heart rate turbulence detection using an extended IPFM model

The well-known integral pulse frequency modulation (IPFM) model is used to generate the occurrence times of normal sinus rhythm. In a previous study, we extended the model to account for ectopic beats and subsequent variation in sinus rhythm that may accompany an ectopic beat; a phenomenon known as heart rate turbulence (HRT). Inspired by the extended model, a new approach to characterize HRT was