Sökresultat
Filtrera
Filtyp
Din sökning på "*" gav 529953 sökträffar
Evacuation travel paths in virtual reality experiments for tunnel safety analysis
A case study on the analysis of evacuation travel paths in virtual reality (VR) tunnel fire experiments is presented to increase the understanding on evacuation behaviour. A novel method based on the study of the parametric equations of the occupants’ evacuation travel paths using vector operators inspired by functional analysis theory and the new concept of interaction areas (IAs) is introduced.
The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary
The Cretaceous-Paleogene boundary similar to 65.5 million years ago marks one of the three largest mass extinctions in the past 500 million years. The extinction event coincided with a large asteroid impact at Chicxulub, Mexico, and occurred within the time of Deccan flood basalt volcanism in India. Here, we synthesize records of the global stratigraphy across this boundary to assess the proposed
2013 ESH/ESC Guidelines for the management of arterial hypertension
Small bowel obstruction and toxicity of a new model of adhesion prevention
Abstract Background: Small bowel obstruction (SBO) is a common surgical diagnosis. If no signs of strangulation are evident, the majority of the patients can be conservatively managed. Approximately one third of the patients need surgical treatment and there is a need for early parameters that can predict operative intervention. The etiology of SBO in most cases is postoperative abdominal adhesion
Access to social capital and risk of HIV infection in Bukoba urban district, Kagera region, Tanzania.
Kagera is one of the 22 regions of Tanzania mainland, which has witnessed a decline in HIV prevalence during the past two decades; decreasing from 24% in 1987 to 4.7 in 2009 in the urban district of Bukoba. Access to social capital, both structural and cognitive, might have played a role in this development. The aim was to examine the association between individual structural and cognitive social
Adiabatic laminar burning velocities of CH4 + H2 + air flames at low pressures
Experimental measurements of the adiabatic burning velocity in methane + hydrogen + air flames using the Heat Flux method are presented. The hydrogen content in the fuel was varied from 0 to 20%. Non-stretched flames were stabilized on a perforated plate burner from 20 to 100 kPa. The equivalence ratio was varied from 0.8 to 1.4. Adiabatic burning velocities of CH4 + H-2 + air mixtures were found
Faror med att låta marknaden utveckla tjänster
No title
This study aimed to assess the impact of the current economic crisis on mortality trends in Spain and its effect on social inequalities in mortality in Andalusia. We used data from vital statistics and the Population Register for 1999 to 2011, as provided by the Spanish Institute of Statistics, to estimate general and sex- and age-specific mortality rates. The Longitudinal Database of the Andalusi
Jättelokan upprättad.
Det är dags att acceptera jättelokan i den svenska floran. Det anser botanikern Lars Fröberg. Växten har varit bannlyst i Sverige under mer än ett kvartssekel.
Klein on the Unity of Cartesian and Contemporary Skepticism
Weighted interpolation in Paley-Wiener spaces and finite-time controllability
This paper considers the solution of weighted interpolation problems in model subspaces of the Hardy space H-2 that are canonically isometric to Paley-Wiener spaces of analytic functions A new necessary and sufficient condition is given on the set of interpolation points which guarantees that a solution in H-2 can be transferred to a solution in a model space. The techniques used rely on the repro
Tunable zero-field Kondo splitting in a quantum dot
We present detailed low-temperature transport measurements of a single quantum dot formed in an InGaAs/InP heterostructure with a strong tunnel coupling to the source and drain leads. The conventional spin-1/2 Kondo effect is observed for the quantum dot in the N = 9 charge state. By changing the voltages applied to the quantum dot barrier gates, we find a zero-field splitting of the Kondo resonan
Analysis of a set of missense, frameshift, and in-frame deletion variants of BRCA1
Germline Mutations that inactivate BRCA1 are responsible for breast and ovarian cancer Susceptibility. one possible outcome of genetic testing for BRCA1 is the finding of a genetic variant of uncertain significance for which there is no information regarding its cancer association. This outcome leads to problems ill risk assessment, Counseling and preventive care. The purpose of the present study
Risk preferences as determinants of soil conservation decisions in Ethiopia
Soil degradation is one of the most serious environmental problems in the highlands of Ethiopia. The prevalence of traditional agricultural land use and the absence of appropriate resource management often result in the degradation of natural soil fertility. This has important implications for soil productivity, household food security, and poverty. Given the extreme vulnerability of farmers in th
Scale-integrated atmospheric simulations to assess thermal comfort in six different urban tissues in the warm humid summer of São Paulo, Brazil
Transforming the “efficiency gap” into a viable business opportunity: lessons learned from the ESCO experience in Sweden
Energy service companies (ESCOs) are often portrayed as important change agents in capturing energy efficiency opportunities to curb global energy demand and mitigate climate change. Yet, the literature in this area is limited. While many studies analyze economic and environmental impacts from energy efficiency programs, far less attention has been devoted to evaluating managerial and other challe