María Justo Alonso, Therese Nitter Moazami, Peng Liu, Rikke Bramming Jørgensen, Hans Martin Mathisen,
In this study, concentrations of pollutants: formaldehyde, carbon dioxide (CO2), and total volatile organic compounds (TVOC) and parameters: indoor room temperature and relative humidity (RH) were measured in 21 home offices for at least one week in winter in Trondheim, Norway. Eleven of these were measured again for the same duration in summer. Potentially explanatory variables of these parameters were collected, including building and renovation year, house type, building location, trickle vent status, ...
Tópico(s): Building Energy and Comfort Optimization
2022 - Elsevier BV | Building and Environment
María Justo Alonso, Henrik Madsen, Peng Liu, Rikke Bramming Jørgensen, Thomas Berg Jørgensen, Even Johan Christiansen, Olav Aleksander Myrvang, Diane Bastien, Hans Martin Mathisen,
Low-cost sensors (LCS) are becoming ubiquitous in the market; however, calibration is needed before reliable use. An evaluation of the calibration of eight identical pre-calibrated formaldehyde LCS is presented here. The LCS and a reference instrument were exposed to a pollutant source(s) for the calibration measurements. After one year, some tests were repeated to check the drift and stability of calibration. This paper presents methodologies for calibration using data with significant autocorrelations. ...
Tópico(s): Advanced Chemical Sensor Technologies
2022 - Elsevier BV | Building and Environment
María Justo Alonso, Sebastian Wolf, Rikke Bramming Jørgensen, Henrik Madsen, Hans Martin Mathisen,
CO2 is customarily used to control ventilation as it is a proxy for bio-effluents and pollutants related to the presence and activity of people in the room. However, CO2 could not be a satisfactory indicator for pollutants that do not have a metabolic origin, i.e., emissions from building materials or emissions from traffic. A methodology to select pollutants besides or instead of CO2 is presented in this article. This methodology sets to study (i) the suitable location to measure air pollutants ...
Tópico(s): Indoor Air Quality and Microbial Exposure
2021 - Elsevier BV | Building and Environment
Suzanne M. Hingley‐Wilson, Nan Ma, Yin Hu, Rosalyn Casey, Anders Bramming, Richard J. Curry, Hongying Tang, Huihai Wu, Rachel E. Butler, William R. Jacobs, Andrea Rocco, Johnjoe McFadden,
Whenever a genetically homogenous population of bacterial cells is exposed to antibiotics, a tiny fraction of cells survives the treatment, the phenomenon known as bacterial persistence [G.L. Hobby et al. , Exp. Biol. Med. 50, 281–285 (1942); J. Bigger, The Lancet 244, 497–500 (1944)]. Despite its biomedical relevance, the origin of the phenomenon is still unknown, and as a rare, phenotypically resistant subpopulation, persisters are notoriously hard to study and define. Using computerized tracking we ...
Tópico(s): Escherichia coli research studies
2020 - National Academy of Sciences | Proceedings of the National Academy of Sciences
Produção Nacional
Revisado por pares
Mie Plotnikof, Pia Bramming, Layla Branicki, Lærke Højgaard Christiansen, Kelly Henley, Nina Kivinen, João Paulo Resende de Lima, Monika Kostera, Emmanouela Mandalaki, Saoirse Caitlin O’Shea, Banu Özkazanç‐Pan, Alison Pullen, Jim Stewart, Sierk Ybema, Noortje van Amsterdam,
The spread of COVID-19 acutely challenges and affects not just economic markets, demographic statistics and healthcare systems, but indeed also the politics of organizing and becoming in a new everyday life of academia emerging in our homes. Through a collage of stories, snapshots, vignettes, photos and other reflections of everyday life, this collective contribution is catching a glimpse of corona-life and its micro-politics of multiple, often contradicting claims on practices as many of us live, ...
Tópico(s): Geographies of human-animal interactions
2020 - Wiley | Gender Work and Organization
Rikke Bramming Jørgensen, Ida Kero, Aleksander Blom, Esten Eide Grove, Kristin Svendsen,
Background: It is difficult to assess workers’ exposure to ultrafine particles (UFP) due to the lack of personal sampling equipment available for this particle fraction. The logbook method has been proposed as a general method for exposure assessment. This method measures the time and concentration components of the time-weighted average concentration separately and could be suitable for investigation of UFP exposure. Objectives: In this study, we have assessed workers’ exposure to UFP in a ferrosilicon ...
Tópico(s): Air Quality Monitoring and Forecasting
2020 - Multidisciplinary Digital Publishing Institute | Nanomaterials
Maja Bramming, Ulrik Becker, Maja Bæksgaard Jørgensen, Søren Neermark, Thue Bisgaard, Janne Schurmann Tolstrup,
Abstract Background Bariatric surgery has been associated with altered alcohol metabolism. We examined whether patients undergoing bariatric surgery have a higher risk of developing alcohol use disorder (AUD) compared with individuals with obesity who have not received bariatric surgery. Methods In this prospective cohort study, we followed 13 430 patients undergoing bariatric surgery (95% gastric bypass) between 2005 and 2013 and a reference group of 21 021 individuals with obesity for a median of ...
Tópico(s): Diabetes, Cardiovascular Risks, and Lipoproteins
2020 - Oxford University Press | International Journal of Epidemiology
Maja Bramming, Maja Bæksgaard Jørgensen, Anne Illemann Christensen, Cathrine Juel Lau, Kia Kejlskov Egan, Janne Schurmann Tolstrup,
Objective This study aimed to test the hypotheses that individuals with obesity are at higher risk of unemployment and sickness absence and have a lower chance of getting employed compared with individuals with normal weight. Methods Data on weight and height were collected at baseline from 87,796 participants in the Danish National Health Survey 2010. Participants were then followed in national registers for 5 years. Outcome measures were transitions from employment to unemployment and sickness ...
Tópico(s): Eating Disorders and Behaviors
2019 - Wiley | Obesity
Abstract Background The aim of this study is to make a comparison of a new small sized nanoparticle monitoring instrument, Nanoscan SMPS, with more traditional large size instruments, known to be precise and accurate [Scanning Mobility Particle Sampler (SMPS) and Fast Mobility Particle Sizer (FMPS)], and with an older small size instrument with bulk measurements of 10–1000 nm particles (CPC3007). The comparisons are made during simulated exposure scenarios relevant to occupational hygiene studies. Methods ...
Tópico(s): Recycling and Waste Management Techniques
2019 - BioMed Central | Journal of Occupational Medicine and Toxicology
Rikke Bramming Jørgensen, Ida Kero,
Airborne particulate matter in the silicon carbide (SiC) industry is a known health hazard. The aims of this study were to elucidate whether the particulate matter generated inside the Acheson furnace during active operation is representative of the overall particulate matter in the furnace hall, and whether the Acheson furnaces are the main sources of ultrafine particles (UFP) in primary SiC production. The number concentration of ultrafine particles was evaluated using an Electrical Low Pressure ...
Tópico(s): Vehicle emissions and performance
2017 - Multidisciplinary Digital Publishing Institute | International Journal of Environmental Research and Public Health
Siri Fenstad Ragde, Rikke Bramming Jørgensen, Solveig Føreland,
Electrosurgery is a method based on a high frequency current used to cut tissue and coagulate small blood vessels during surgery. Surgical smoke is generated due to the heat created by electrosurgery. The carcinogenic potential of this smoke was assumed already in the 1980's and there has been a growing interest in the potential adverse health effects of exposure to the particles in surgical smoke. Surgical smoke is known to contain ultrafine particles (UFPs) but the knowledge about the exposure ...
Tópico(s): COVID-19 and healthcare impacts
2016 - Oxford University Press | The Annals of Occupational Hygiene
Ida Kero, Rikke Bramming Jørgensen,
The aim of this study was to compare the applicability and the correlation between three commercially available instruments capable of detection, quantification, and characterization of ultrafine airborne particulate matter in the industrial setting of a tapping area in a silicon alloy production plant. The number concentration of ultrafine particles was evaluated using an Electric Low Pressure Impactor (ELPI(TM)), a Fast Mobility Particle Sizer (FMPS(TM)), and a Condensation Particle Counter (CPC). ...
Tópico(s): Aerosol Filtration and Electrostatic Precipitation
2016 - Multidisciplinary Digital Publishing Institute | International Journal of Environmental Research and Public Health
Rikke Bramming Jørgensen, Morten Buhagen, Solveig Føreland,
To investigate the exposure to number concentration of ultrafine particles and the size distribution in the breathing zone of workers during rehabilitation of a subsea tunnel.Personal exposure was measured using a TSI 3091 Fast Mobility Particle Sizer (FMPS), measuring the number concentration of submicrometre particles (including ultrafine particles) and the particle size distribution in the size range 5.6-560 nm. The measurements were performed in the breathing zone of the operators by the use of ...
Tópico(s): Risk and Safety Analysis
2016 - BMJ | Occupational and Environmental Medicine
Mats Brämming, Bo Björkman, Caisa Samuelsson,
In a complex industrial batch processes such as the top-blown BOF steelmaking process, it is a complicated task to monitor and act on the progress of several important control parameters in order to avoid an undesired process event such as "slopping" and to secure a successful batch completion such as a sufficiently low steel phosphorous content. It would, therefore, be of much help to have an automated tool, which simultaneously can interpret a large number of process variables, with the function ...
Tópico(s): Metallurgical Processes and Thermodynamics
2015 - Wiley | steel research international
Sigrid Tibæk, N. Holmestad-Bechmann, Tine Pedersen, S.M. Bramming, Achton Friis,
Objectives To establish reference values for maximum walking speed over 10 m for independent community-dwelling Danish adults, aged 60 to 79 years, and to evaluate the effects of gender and age. Design Cross-sectional study. Setting Danish companies and senior citizens clubs. Participants Two hundred and fifty-two adults (167 women, 85 men) with a mean age of 70 [standard deviation (SD) 4] years. Interventions Not applicable. Main outcome measure Results for the 10-m walk test (10 MWT) were used to ...
Tópico(s): Chronic Disease Management Strategies
2014 - Elsevier BV | Physiotherapy
Alex J. Thompson, Sergio Coda, Mikkel Brydegaard Sørensen, Gordon T. Kennedy, Rakesh Patalay, Ulrika Waitong‐Brämming, Pieter De Beule, Mark A. A. Neil, Stefan Andersson‐Engels, Niels Bendsøe, Paul M. W. French, Katarina Svanberg, Chris Dunsby,
Abstract We present a clinical investigation of diffuse reflectance and time‐resolved autofluorescence spectra of skin cancer with an emphasis on basal cell carcinoma. A total of 25 patients were measured using a compact steady‐state diffuse reflectance/fluorescence spectrometer and a fibre‐optic‐coupled multispectral time‐resolved spectrofluorometer. Measurements were performed in vivo prior to surgical excision of the investigated region. Singular value decomposition was used to reduce the dimensionality ...
Tópico(s): Skin Protection and Aging
2012 - Wiley | Journal of Biophotonics
Katarina Lundkvist, Mats Brämming, Mikael Larsson, Caisa Samuelsson,
Vanadium in raw materials used in iron- and steelmaking, a particular challenge for Nordic steel producers, affects the composition of the generated slag from the steelmaking vessel, i.e. the basic oxygen furnace (BOF) adversely and reduces the potential for recycling and external utilisation. A process concept under development aims to enrich and extract the vanadium content of slag from the BOF, making use of the vanadium in the slag and also increasing the overall slag use potential. Applications ...
Tópico(s): Iron and Steelmaking Processes
2012 - Elsevier BV | Journal of Cleaner Production
Rikke Bramming Jørgensen, Bo Strandberg, Ann Kristin Sjaastad, Arve Johansen, Kristin Svendsen,
This study investigated the exposure of cooks to polycyclic aromatic hydrocarbons (PAHs), higher mutagenic aldehydes, total particles, and ultrafine particles during cooking. Experiments were performed by pan frying fresh and smoked bacon on both electric and gas stoves, and with the gas alone. Detailed analyses of PAHs were performed, with analyses of the levels of 32 different PAHs. A TSI-3939 scanning mobility particle sizer system was used to measure the ultrafine particles. The results showed ...
Tópico(s): Air Quality Monitoring and Forecasting
2012 - Taylor & Francis | Journal of Occupational and Environmental Hygiene
Pia Bramming, Birgitte Gorm Hansen, Anders Bojesen, Kristian Gylling Olesen,
Purpose The purpose of this paper is to explore a visual method, snaplog (snapshots and logbooks) from a performativity theory approach. Design/methodology/approach The paper uses empirical examples from a three‐year qualitative research project where snaplogs are used as an experimental method. The paper presents a reading of performativity theory and discusses the performativity of using visual methods in the research process. Findings The paper concludes that visual methods have a special ability ...
Tópico(s): Artistic and Creative Research
2012 - Emerald Publishing Limited | Qualitative Research in Organizations and Management An International Journal
Peter Hasle, Anders Bojesen, Per Langaa Jensen, Pia Bramming,
Purpose The effects of lean on employees have been debated ever since the concept was introduced. The purpose of this paper is to review the scientific literature on the effects of lean on the working environment and employee health and well‐being. Design/methodology/approach Relevant databases were searched for studies of lean and the working environment. In total, 11 studies with quantitative effects of lean are included in this review. The methodology and results are analysed to extract information ...
Tópico(s): Ergonomics and Human Factors
2012 - Emerald Publishing Limited | International Journal of Operations & Production Management
M. S. Millman, A. Overbosch, Abha Kapilashrami, Donald Malmberg, Mats Brämming,
A unique in blow sampling system has been applied to a blowing converter to retrieve simultaneously representative bulk metal bath and slag/metal emulsion samples from seven specified positions and every 2 min from start of blow. Full sample datasets from 20 heats have been grouped according to differences in the bulk bath phosphorus removal profiles and analysed with respect to relative refining ability of the slag/metal emulsion and the bulk metal bath. The complexity of the thermokinetic relationships ...
Tópico(s): Advancements in Battery Materials
2011 - Taylor & Francis | Ironmaking & Steelmaking Processes Products and Applications
Anne Louise Bang, Christine Cleemann, Pia Bramming,
Purpose – The main purpose of this paper is to explore and revitalise key contributions of Peter Drucker for the understanding of how changing conditions in the economy radically alter the ways business value is created. Second, the authors wish to demonstrate how the changes in key economic resources pose altogether different challenges and opportunities for management research and practice.
Tópico(s): Contemporary Cultural and Social Studies
2010 - Emerald Publishing Limited | Management Decision
Ann Kristin Sjaastad, Rikke Bramming Jørgensen, Kristin Svendsen,
Objectives Cooking with gas or electric stoves produces fumes, especially during frying, that contain a range of harmful and potentially mutagenic compounds as well as high levels of fine and ultrafine particles. The aim of this study was to see if polycyclic aromatic hydrocarbons (PAHs) and higher mutagenic aldehydes which were collected in the breathing zone of the cook, could be detected in fumes from the frying of beefsteak. Methods The frying was performed in a model kitchen in conditions similar ...
Tópico(s): Toxic Organic Pollutants Impact
2010 - BMJ | Occupational and Environmental Medicine
Purpose The purpose of this paper is to give concrete ideas to the development of MPA programmes in the light of the changing public sector. Following the introduction of ideas and practices from New Public Management, public managers face new requirements. The paper aims to deal with some of them and argues that in order to be a competent manager in the public sector today, one needs to be able to self‐develop four types of competence‐in‐practice: methodological competencies; theoretical competencies; ...
Tópico(s): Accounting and Organizational Management
2008 - Emerald Publishing Limited | International Journal of Public Sector Management
ABSTRACT This article debates whether the concept of satisfaction as a measurement of quality in higher education supports the goal of enhancing transformative learning. As higher education is about transforming people, not just their knowledge, it is argued that learning challenges the identities of students, and even questions their personal integrity. Transformative learning is a painful process as well as a state of being that students have to accept and see as not only necessary but desired. ...
Tópico(s): Ego Development and Educational Practices
2007 - Taylor & Francis | Quality in Higher Education
Tópico(s): Building Energy and Comfort Optimization
2006 - Elsevier BV | Building and Environment
Rikke Bramming Jørgensen, Tor Helge Dokka, Olav Bjørseth,
A sink-diffusion model to describe the interaction between material surfaces and volatile organic compounds (VOCs) in indoor air has been introduced. The model is based on adsorption/desorption on the material surfaces and diffusion into the materials. Test chamber experiments with exposure of nylon carpet and polyvinyl chloride (PVC) covering against alpha-pinene and toluene were used to validate the model and to make comparisons with a sink model based on the Langmuir adsorption isotherm. The results ...
Tópico(s): Vehicle emissions and performance
2000 - Wiley | Indoor Air
Rikke Bramming Jørgensen, Olav Bjørseth,
The sorption of volatile organic compounds (VOC) on material surfaces was evaluated by chamber testing. The sorption of single VOCs was compared to the sorption of the combination of the VOCs and the sorption of single material surfaces was compared to the sorption of the combination of material surfaces. The sorption compounds were α-pinene and toluene, and the material surfaces were wool carpet and nylon carpet. The sink effect of the chambers and the effect of the loading of the materials were ...
Tópico(s): Vehicle emissions and performance
1999 - Elsevier BV | Environment International
Rikke Bramming Jørgensen, Olav Bjørseth, Bjarne Malvik,
Abstract A simple test chamber method to quantify adsorption and desorption of organic compounds on material surfaces is described. Important environmental parameters such as temperature, relative humidity and air velocity were varied and controlled independently around typical indoor values. Experiments were performed with α-pinene and toluene in concentrations of 160-300 μg/m3. The measurements show adsorption on and desorption from wool carpet, nylon carpet, polyvinyl chloride (PVC) floor coverings, ...
Tópico(s): Odor and Emission Control Technologies
1999 - Wiley | Indoor Air
Riidiger Kabst, Henrik Holt Larsen, Pia Bramming,
This paper analyses the role of training and development in lean management organizations. The hypothesis is that organizations characterized by lean management have a distinctive profile in terms of training and development. Specifically, it is hypothesized that lean organizations have the following features to a higher extent than non-lean organizations: • employee involvement in training and development • use of work groups for quality, product development and task flexibility • attribution of importance ...
Tópico(s): Operations Management Techniques
1996 - Routledge | The International Journal of Human Resource Management