Sökresultat

Filtyp

Din sökning på "*" gav 529446 sökträffar

Verification of a One-Dimensional Model of CO2 Atmospheric Transport Inside and Above a Forest Canopy Using Observations at the Norunda Research Station

A model of (Formula presented.) atmospheric transport in vegetated canopies is tested against measurements of the flow, as well as (Formula presented.) concentrations at the Norunda research station located inside a mixed pine–spruce forest. We present the results of simulations of wind-speed profiles and (Formula presented.) concentrations inside and above the forest canopy with a one-dimensional

Flame Heights and Heat Transfer in Façade System Ventilation Cavities

The design of buildings using multilayer constructions poses a challenge for fire safety and needs to be understood. Narrow air gaps and cavities are common in many constructions, e.g. ventilated façade systems. In these construction systems flames can enter the cavities and fire can spread on the interior surfaces of the cavities. An experimental program was performed to investigate the influence

Characteristics of nFOG, an aerosol-based wet thin film coating technique

An atmospheric pressure aerosol-based wet thin film coating technique called the nFOG is characterized and applied in polymer film coatings. In the nFOG, a fog of droplets is formed by two air-assist atomizers oriented toward each other inside a deposition chamber. The droplets settle gravitationally and deposit on a substrate, forming a wet film. In this study, the continuous deposition mode of t

Organic intimacy : emotional practices at an organic store

The article tells the story of the rise and fall of the organic store Yggdrasill in Iceland. That story features humble founders, caring customers, dedicated staff, as well as anonymous investment funds, and it describes the conversion of organics from a niche market to mainstream consumption. Through an ethnographic account of everyday life at the organic store, the article analyzes how intimacy

Amyloid blood biomarker detects Alzheimer's disease

Alzheimer's disease (AD) is currently incurable, but there is general agreement that a minimally invasive blood biomarker for screening in preclinical stages would be crucial for future therapy. Diagnostic tools for detection of AD are either invasive like cerebrospinal fluid (CSF) biomarkers or expensive such as positron emission tomography (PET) scanning. Here, we determine the secondary structu

Relationship to parents in adulthood with a background of out-of-home care in childhood

The longitudinal study started with children aged up to 4 who had been taken into care because of unacceptable living conditions and deficient parental care. After their initial stay in a children's home, the 26 children in the research group went on to have diverse placement histories throughout their childhood (up to age 18). The children have been divided into 4 subgroups in accordance with the

Economic Evaluation of Nonpharmacological Interventions for Dementia Patients and their Caregivers - A Systematic Literature Review

Background: The rising prevalence of dementia represents an important public health issue. There is currently no available cure for dementia disorders, only symptom-relieving therapies which can be either pharmacological or non-pharmacological. The number of non-pharmacological interventions for patients with dementia disorders and their caregivers have been increasing in recent years without much

High performing hydroxide exchange membranes with flexible tetra-piperidinium side chains linked by alkyl spacers

The objective of the present work is to, in a single material, combine a number of molecular design strategies that have proven successful in the preparation of high-performance anionexchange membranes (AEMs) for alkaline fuel cells. Hence, we here report on highly conductive and alkali-stable poly(phenylene oxide)s carrying flexible side chains attached via alkyl spacer units, where each side cha

An Intuitive Design Method for Disturbance-Rejecting Peak Filters

We present a method for augmenting a nominal controller with a peak filter to achieve improved rejection of narrowband disturbances. The method is based on consideration of the open-loop Nyquist curve, which arguably makes it more intuitive and flexible than previous approaches. We also comment on some implementation aspects, and give an application example based on a control problem at a particle

Eastbound Tourism in the Cold War : The History of the Swedish Communist Travel Agency Folkturist

Millions of Westerners went on holiday behind the Iron Curtain during the Cold War. This article considers the place of Eastern Europe in the international travel industry through the prism of Folkturist, a travel agency owned by the Communist Party of Sweden. By analysing Folkturist's business strategies and interactions with the East European tourist industries, the article shows the competing i

Revisiting Public Support for the Euro, 1999-2017 : Accounting for the Crisis and the Recovery

This paper explores the evolution and determinants of public support for the euro since its creation in 1999 until the end of 2017, thereby covering the pre-crisis experience of the euro, the crisis years and the recent recovery. Using uniquely large macro and micro databases and applying up-to-date econometric techniques, we revisit the growing literature on public support for the euro. First, we

Prognostic impact of systolic blood pressure variability in people with diabetes

Objective Blood pressure variability (BPV) has been associated with risk of cardiovascular events in observational studies, independently of mean BP levels. In states with higher autonomic imbalance, such as in diabetes, the importance of BP variability may theoretically be even greater. We aimed to investigate the incremental value of BPV for prediction of cardiovascular and all-cause mortality i