Search results

Filter

Filetype

Your search for "*" yielded 531940 hits

THE EFFECT OF REDUCED BREAST COMPRESSION IN BREAST TOMOSYNTHESIS: HUMAN OBSERVER STUDY USING CLINICAL CASES.

The aim of this study was to investigate whether the compression force used with conventional mammography can be reduced with breast tomosynthesis (BT), without adversely affecting the visualisation of normal and pathological structures. Forty-five women were examined with BT using full (same as for 2D mammography) and half compression force. Both examinations were performed with the same acquisit

Modersmonster

Regular column on performing arts in the weekly newspaper Arbetaren (The Worker).

Polyamine homoeostasis.

The polyamines are essential for a variety of functions in the mammalian cell. Although their specific effects have not been fully elucidated, it is clear that the cellular polyamines have to be kept within certain levels for normal cell function. Polyamine homoeostasis in mammalian cells is achieved by a complex network of regulatory mechanisms affecting synthesis and degradation, as well as memb

Lack of physical activity in young children is related to higher composite risk factor score for cardiovascular disease.

Aim: This study evaluates if accelerometer measured physical activity is related to higher composite risk factor scores for cardiovascular disease (CVD) in children. Methods: Cross-sectional study that included 223 children aged 7.9-11.1 years (boys n=123, girls n=100). Daily physical activity was assessed by accelerometers for four days. Body fat was quantified by dual x-ray absorptiometry. Maxim

Distance bounds for an ensemble of LDPC convolutional codes

An ensemble of (J, K) -regular low-density parity-check (LDPC) convolutional codes is introduced and existence-type lower bounds on the minimum distance dL, of code segments of finite length L and on the free distance dfree are derived. For sufficiently large constraint lengths v, the distances are shown to grow linearly with v and the ratio dL/v approaches the ratio dfee/v for large L. Moreover,

Estimation of line properties in the copper access network

The copper access-network operators face the challenge of developing and maintaining cost-effective digital subscriber line (DSL) services that are competitive to other broadband access technologies. The way forward is dictated by the demand of ever increasing data rates on the twisted-pair copper lines. This forces a deployment of the DSL transceivers in cabinets closer to the customers with a jo

A Voyage to Vardø – A Scientific Account of an Unscientific Expedition

After the “Venus Transit Conference” that took place at the University of Tromsø from June 2 to June 3, 2012, participants were given the opportunity to either stay in Tromsø until the night of June 5–6, or to participate in a voyage to Finnmark, where the historical sites Vardø, Hammerfest, and the North Cape were to be visited. This voyage culminated in the observation of the 2012 transit of Ven

Windstorms in Sweden - variations and impacts

Windstorms have caused severe damage on several occasions in Sweden during the last century. A general concern about future projections of climate extremes has raised questions on the variations and impacts of windstorms. The main objective with this work was to reach a deeper understanding of the variability and possible trends in ­windstorms, and related storm impacts in forests. This was achiev

Evolving strategies for software architecture and reuse

To achieve their business objectives, software developing companies employ different technical and managerial strategies concerning architecture and reuse. These strategies include component-based development, software platforms, product lines and highly configurable code bases. Frameworks for describing these strategies have recently emerged, presenting them in orders of increasing maturity, with

Oestrogen treatment of constitutional tall stature in girls: is there a risk of thrombosis or bleeding?

Aim: To evaluate haemostatic effects and clinical outcome of oestrogen treatment of constitutionally tall stature in girls. Methods: We conducted a single-centre cohort study, 63 girls referred over a period of 15 years were investigated. The girls were given oestrogen treatment for constitutional tall stature at a median initial dose of 300 ug ethinyl estradiol/day and were consecutively examined