Vilhelm Malmborg
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View article: Toxicity of carbon nanomaterials: A model to predict ROS production from easily measurable surface characteristics
Toxicity of carbon nanomaterials: A model to predict ROS production from easily measurable surface characteristics Open
Toxicity pathways of engineered carbon nanomaterials, which have many and diverse industrial applications, include oxidative stress primarily due to the generation of reactive oxygen species (ROS). This study on 13 carbon black, 6 Graphene…
View article: Characterisation of fire smoke emissions from fire retardant wood
Characterisation of fire smoke emissions from fire retardant wood Open
Fire retardants are extensively used to reduce the flammability (combustibility) of wood–based construction materials in an effort to improve fire safety of buildings. However, little is known of the composition and potential risks to huma…
View article: Characterization of exposure to air pollutants for workers in and around fires
Characterization of exposure to air pollutants for workers in and around fires Open
Firefighters can be occupationally exposed to a wide range of airborne pollutants during fire-extinguishing operations. The overall study aim was to characterize occupational exposure to smoke for several groups of workers responding to fi…
View article: Tribology and airborne particle emissions from grey cast iron and WC reinforced laser cladded brake discs
Tribology and airborne particle emissions from grey cast iron and WC reinforced laser cladded brake discs Open
Laser cladding (LC) is a promising technique to overlay a protective coating on grey cast iron (GCI) brake discs to enhance the wear and corrosion resistance. This study utilized a pin-on-disc tribometer in an aerosol chamber to investigat…
View article: Particulate matter constituents trigger the formation of extracellular amyloid β and Tau -containing plaques and neurite shortening <i>in vitro</i>
Particulate matter constituents trigger the formation of extracellular amyloid β and Tau -containing plaques and neurite shortening <i>in vitro</i> Open
Air pollution is an environmental factor associated with an increased risk of neurodegenerative diseases, such as Alzheimer's and Parkinson's, characterized by decreased cognitive abilities and memory. The limited models of sporadic Alzhei…
View article: Particulate matter constituents trigger the formation of extracellular amyloid β and Tau-containing plaques and neurite shortening<i>in vitro</i>
Particulate matter constituents trigger the formation of extracellular amyloid β and Tau-containing plaques and neurite shortening<i>in vitro</i> Open
Introduction Air pollution is an environmental factor associated with Alzheimer’s disease, characterized by decreased cognitive abilities and memory. The limited models of sporadic Alzheimer’s disease fail to replicate all pathological hal…
View article: On the impact of pad material ingredients on particulate wear emissions from disc brakes
On the impact of pad material ingredients on particulate wear emissions from disc brakes Open
Besides friction and wear, airborne particle emission has become a central parameter when evaluating disc brake performance due to its potential adverse health effects as component of ambient air pollution. The pad friction material of bra…
View article: A comparison of carbon monoxide yields and particle formation at various global equivalence ratios in vitiated and under-ventilated conditions
A comparison of carbon monoxide yields and particle formation at various global equivalence ratios in vitiated and under-ventilated conditions Open
There have been previous studies comparing experimental methods for the purpose of capturing gaseous yields at a range of global equivalence ratios. However, no work has investigated the capability of the open controlled atmosphere cone ca…
View article: Fresh and Aged Organic Aerosol Emissions from Renewable Diesel-Like Fuels HVO and RME in a Heavy-Duty Compression Ignition Engine
Fresh and Aged Organic Aerosol Emissions from Renewable Diesel-Like Fuels HVO and RME in a Heavy-Duty Compression Ignition Engine Open
A modern diesel engine is a reliable and efficient mean of producing power. A way to reduce harmful exhaust and greenhouse gas (GHG) emissions and secure the sources of energy is to develop technology for an efficient diesel engine operati…
View article: Particle emissions from a modern heavy-duty diesel engine as ice nuclei in immersion freezing mode: a laboratory study on fossil and renewable fuels
Particle emissions from a modern heavy-duty diesel engine as ice nuclei in immersion freezing mode: a laboratory study on fossil and renewable fuels Open
We studied ice-nucleating abilities of particulate emissions from a modern heavy-duty diesel engine using three different types of fuel. The polydisperse particle emissions were sampled during engine operation and introduced to a continuou…
View article: Immersion Freezing Ability of Freshly Emitted Soot with Various Physico-Chemical Characteristics
Immersion Freezing Ability of Freshly Emitted Soot with Various Physico-Chemical Characteristics Open
The immersion freezing ability of soot particles has in previous studies been reported in the range of low/insignificant to very high. The aims of this study were to: (i) perform detailed physico-chemical characterisation of freshly produc…
View article: Experimental wildfire induced mobility of radiocesium in a boreal forest environment
Experimental wildfire induced mobility of radiocesium in a boreal forest environment Open
Wildfires are expected to increase with warmer climate, which can contribute to the mobility and the resuspension of long-lived and potentially hazardous radionuclides. The release of 137Cs during combustion of dried litter, forest floor o…
View article: Comment on acp-2021-111
Comment on acp-2021-111 Open
Abstract. We studied ice-nucleating abilities of particulate emissions from a modern heavy-duty diesel engine using three different types of fuel. The polydisperse particle emissions were sampled during engine operation and introduced to a…
View article: Properties and emission factors of cloud condensation nuclei from biomass cookstoves – observations of a strong dependency on potassium content in the fuel
Properties and emission factors of cloud condensation nuclei from biomass cookstoves – observations of a strong dependency on potassium content in the fuel Open
Residential biomass combustion is a significant source of aerosol particles on regional and global scales influencing climate and human health. The main objective of the current study was to investigate the properties of cloud condensation…
View article: Referee-Comment on acp-2021-111
Referee-Comment on acp-2021-111 Open
Abstract. We studied ice-nucleating abilities of particulate emissions from a modern heavy-duty diesel engine using three different types of fuel. The polydisperse particle emissions were sampled during engine operation and introduced to a…
View article: Effects of renewable fuel and exhaust aftertreatment on primary and secondary emissions from a modern heavy-duty diesel engine
Effects of renewable fuel and exhaust aftertreatment on primary and secondary emissions from a modern heavy-duty diesel engine Open
Compared to petroleum diesel, renewable diesel fuels and exhaust aftertreatment systems can reduce primary exhaust emissions that are hazardous to human health and the environment. Secondary aerosol emissions which form upon atmospheric pr…
View article: Characteristics of BrC and BC emissions from controlled diffusion flame and diesel engine combustion
Characteristics of BrC and BC emissions from controlled diffusion flame and diesel engine combustion Open
Constraining the climate impact of particulate brown carbon (BrC) will require identification of formation mechanisms and isolation of its different components to allow for source apportionment. For fresh combustion aerosols, the light abs…
View article: Particle emissions from a modern heavy-duty diesel engine as ice-nuclei in immersion freezing mode: an experimental study on fossil and renewable fuels
Particle emissions from a modern heavy-duty diesel engine as ice-nuclei in immersion freezing mode: an experimental study on fossil and renewable fuels Open
We studied ice-nucleating abilities of particulate emissions from a modern heavy-duty diesel engine using three different types of fuel. The polydisperse particle emissions were sampled during engine operation and introduced to a continuou…
View article: Properties and emission factors of CCN from biomass cookstoves – observations of a strong dependency on potassium content in the fue
Properties and emission factors of CCN from biomass cookstoves – observations of a strong dependency on potassium content in the fue Open
Residential biomass combustion is a significant source of aerosol particles on regional and global scales influencing climate and human health. The main objective of the current study was to investigate the properties of cloud condensation…
View article: Particle characterization and toxicity in C57BL/6 mice following instillation of five different diesel exhaust particles designed to differ in physicochemical properties
Particle characterization and toxicity in C57BL/6 mice following instillation of five different diesel exhaust particles designed to differ in physicochemical properties Open
Background Diesel exhaust is carcinogenic and exposure to diesel particles cause health effects. We investigated the toxicity of diesel exhaust particles designed to have varying physicochemical properties in order to attribute health effe…
View article: Particle characterization and toxicity in C57BL/6 mice following instillation of five different diesel exhaust particles designed to differ in physicochemical properties
Particle characterization and toxicity in C57BL/6 mice following instillation of five different diesel exhaust particles designed to differ in physicochemical properties Open
Background Diesel exhaust is carcinogenic and exposure to diesel particles cause health effects. We investigated the toxicity of diesel exhaust particles designed to have varying physicochemical properties in order to attribute health effe…
View article: Identification and characterization of design fires and particle emissions to be used in performance‐based fire design of nuclear facilities
Identification and characterization of design fires and particle emissions to be used in performance‐based fire design of nuclear facilities Open
Summary CERN operates one of the most complex particle accelerator facilities in the world. Several different hazards, including fires, are present and need to be investigated and reduced to a tolerable level. Toward this goal, CERN aims a…
View article: Effect of Renewable Fuels and Intake O2 Concentration on Diesel Engine Emission Characteristics and Reactive Oxygen Species (ROS) Formation
Effect of Renewable Fuels and Intake O2 Concentration on Diesel Engine Emission Characteristics and Reactive Oxygen Species (ROS) Formation Open
Renewable diesel fuels have the potential to reduce net CO2 emissions, and simultaneously decrease particulate matter (PM) emissions. This study characterized engine-out PM emissions and PM-induced reactive oxygen species (ROS) formation p…
View article: Ice-nucleating ability of particulate emissions from solid-biomass-fired cookstoves: an experimental study
Ice-nucleating ability of particulate emissions from solid-biomass-fired cookstoves: an experimental study Open
This research was part of the Salutary Umeå Study of Aerosols in Biomass Cookstove Emissions (SUSTAINE) laboratory experiment campaign. We studied ice-nucleating abilities of particulate emissions from solid-fuel-burning cookstoves, using …
View article: Particle characterization and toxicity in C57BL/6 mice following instillation of five different diesel exhaust particles designed to differ in physicochemical properties
Particle characterization and toxicity in C57BL/6 mice following instillation of five different diesel exhaust particles designed to differ in physicochemical properties Open
Background Diesel exhaust is carcinogenic and exposure to diesel particles cause health effects. We investigated the toxicity of diesel exhaust particles designed to have varying physicochemical properties in order to attribute health effe…
View article: Characteristics of Particulate Emissions from Low Temperature Combustion and Renewable Fuels : Aerosol Mass Spectrometry of Refractory Carbonaceous Particles
Characteristics of Particulate Emissions from Low Temperature Combustion and Renewable Fuels : Aerosol Mass Spectrometry of Refractory Carbonaceous Particles Open
Particulate air pollution is one of the major causes of premature death in the world, and combustion-derived soot emissions contribute strongly to the particulate pollution to which humans are exposed. Black carbon (BC) is one such emissio…
View article: Regulated Emissions and Detailed Particle Characterisation for Diesel and RME Biodiesel Fuel Combustion with Varying EGR in a Heavy-Duty Engine
Regulated Emissions and Detailed Particle Characterisation for Diesel and RME Biodiesel Fuel Combustion with Varying EGR in a Heavy-Duty Engine Open
This study investigates particulate matter (PM) and regulated emissions from renewable rapeseed oil methyl ester (RME) biodiesel in pure and blended forms and contrasts that to conventional diesel fuel. Environmental and health concerns ar…