Search results

Filter

Filetype

Your search for "*" yielded 528248 hits

Washout of 133-xenon as an objective assessment of paranasal sinus ventilation in endoscopic sinus surgery

Endoscopic sinus surgery (ESS) is today a common method for the treatment of chronic rhinosinusitis. Assessment of the results has been based mainly upon subjective evaluation, and only a few reports present objective measurements, In the present study, the 133-xenon washout technique was used for preoperative and postoperative evaluation of paranasal sinus ventilation in 12 patients selected for

On the Selection of Methods and Tools for Analysis of Heat and Power Plants

Popular Abstract in Swedish Affärsklimatet för dagens energimarknad har varit händelserik de senaste två decennierna med introduktaion av den avreglerade elmarknaden och den ökade vikten av miljöfrågor vid design och inköp av energirelaterade anläggningar. Detta har bidragit med krav om nya analyskriterier, vilka inte bara påverkar den tekniska utformningen av komponenter och system, utan även tilThe business climate of the energy market has been eventful over the last two decades, particularly with the introduction of the deregulated electricity market and promotion of environmental issues. This has subsequently lead to new analysis criteria, influencing both technology requirements and production costs. To be able to manage all the questions that have arisen from this the knowledge of th

Den anomiska rätten. Om undantagskonstruktionen av de rent ideella kränkningsersättningarna.

Anomi är ett centralt rättssociologiskt begrepp introducerat av Émile Durkheim (1858-1917) som beskriver ett tillstånd av oklarhet och normlöshet som överförs på individen vilket får denne att känna otillfredsställelse. Identifieringen av anomi indikerar rättsliga förändringsprocesser och tydliggör samtidens rättskultur när mönster bryts. Kränkningsersättning, s.k. rent ideellt skadestånd, som akt

Dust Measurements During Galileo's Approach to Jupiter and Io Encounter

About a hundred dust impacts per day were detected during the first week in December 1995 by Galileo during its approach to Jupiter. These impacts were caused by submicrometer-sized particles that were just above the detection limit. After the closest approach to Io on 7 December, impacts of these small particles ceased. This effect is expected for dust grains emitted from Io that exit the field o

Asymptomatic leg atherosclerosis is reduced by regular physical activity. Longitudinal results from the cohort "men born in 1914"

OBJECTIVE: To study whether physical activity is associated with reduced occurrence of asymptomatic leg atherosclerosis. DESIGN: Longitudinal and cross-sectional analyses of the population-based cohort "men born in 1914". METHODS: Comparison of the systolic ankle/arm pressure index (AAI) at age 68 in groups who were sedentary, performed some activity, and performed regular physical training at 55

A 0.2V, 7.5 uW, 20 kHz Sigma-Delta modulator with 69 dB SNR in 90 nm CMOS

This paper presents a frequency-to-digital ΣΔ modulator designed in a digital 90 nm CMOS process, operating with a supply voltage of 0.2V. For a 7.5 μW power consumption, the SNR is 68.9 dB and the SNDR is 60.3 dB over a 20 Hz-20 kHz bandwidth. This work shows that the SNR/SNDR performance of this kind of ΣΔ converter can be adjusted over a wide range, while maintaining a state-of-the-art figure-o

Cell transplantation in Parkinson's disease: how can we make it work?

Previous open-label clinical trials have provided proof of principle that intrastriatal transplants of fetal dopaminergic neurons can induce substantial and long-lasting functional benefits in patients with Parkinson's disease. However, in two recent NIH-sponsored double-blind trials, functional improvements were only marginal and the primary endpoints were not met. Severe off-phase dyskinesias we

Long-distance migrants as a model system of structural and physiological plasticity

Several migratory bird species show active cycles of hypertrophy and atrophy of nutritional organs and selected muscle groups. We develop a model for nutritional organs to identify the conditions under which such a pattern of structural change is optimal. Migrants may choose the size of two components of lean mass: a constant component that they carry throughout the entire migration period and a c

Soaring flight in the Eleonora's Falcon (Falco eleonorae)

Eleonora's Falcon (Falco eleonorae) breeds in the Mediterranean region and is highly adapted for catching small birds on passage migration between Eurasia and their African winter quarters, which they feed their young. We studied gliding flight behavior of Eleonora's Falcon at a breeding colony located on a small island southwest of Sardinia, Italy. Gliding and soaring flight performance was measu

W=0 pairing in Hubbard and related models of low-dimensional superconductors

Lattice Hamiltonians with on-site interaction W have W = 0 solutions, that is, many-body singlet eigenstates without double occupation. In particular, W = 0 pairs give a clue to understand the pairing force in repulsive Hubbard models. These eigenstates are found in systems with high enough symmetry, like the square, hexagonal or triangular lattices. By a general theorem, we propose a systematic w

The Printed Score as a Mediator of Musical Meaning Approaches to Music Notation in Western tonal music

Popular Abstract in Swedish Vad säger notbilden? Notation är av central betydelse i västerländsk tonal musik. Repertoarens utsträckning över flera århundraden gör det angeläget att studera hur musikaliskt innehåll medieras genom notation. I denna studie har strategiskt utvalda musikers sätt att ta sig an noterna till tonal musik undersökts. Slutsatser har dragits beträffande notbildens funktionerAbstract Centering on notation is a characteristic of Western tonal music. The printed scores are expected to provide the necessary information on musical expression. In this study, strategically selected contemporary musicians’ ways of under-standing the printed scores are investigated. All participants are thoroughly familiar with musical practice in Western tonal tradition. The intention is to