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Publications (10 of 18) Show all publications
Svensson, N., Lundberg, J., Janhäll, S., Kulovuori, S. & Gustafsson, M. (2023). Effects of a porous asphalt pavement on dust suspension and PM10 concentration. Transportation Research Part D: Transport and Environment, 123, Article ID 103921.
Open this publication in new window or tab >>Effects of a porous asphalt pavement on dust suspension and PM10 concentration
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2023 (English)In: Transportation Research Part D: Transport and Environment, ISSN 1361-9209, E-ISSN 1879-2340, Vol. 123, article id 103921Article in journal (Refereed) Published
Abstract [en]

Non-exhaust emissions from road transport are an important PM10 source, causing negative health effects. Measures to reduce particulate pollution from roads include dust suppression using hygroscopic solutions and road sweeping. This study investigates if porous pavements, generally used for their better noise reduction and water drainage capacity, can also improve air quality. Atmospheric measurements of NOx and PM10 were performed for 7 months along a road stretch containing two different surfaces, one porous and one dense. The PM10 concentration was significantly lower at the porous pavement during all meteorological conditions. Particle emissions measured behind the wheel of a moving car were also lower at the porous pavement. The reasons for the improved air quality are suggested to be the removal of road dust from the surface into the pores of the pavement, the reduction of the air-pumping suspension forces of the tyres, and the prolonged drying of the surface.

Place, publisher, year, edition, pages
Elsevier Ltd, 2023
Keywords
Air quality; Asphalt concrete; Asphalt pavements; Dust; Mastic asphalt; Suspensions (fluids); Double layered; Double-layered porous asphalt concrete; PM 10; Pm10; Porous asphalt concretes; Porous asphalt pavement; Porous pavement; Road dusts; Stone mastic asphalt; Stone mastic asphalts; air quality; asphalt; concentration (composition); dust; particulate matter; pavement; porous medium; source apportionment; Noise abatement
National Category
Infrastructure Engineering
Identifiers
urn:nbn:se:ri:diva-67718 (URN)10.1016/j.trd.2023.103921 (DOI)2-s2.0-85172723755 (Scopus ID)
Funder
Swedish Transport Administration, 2015/9482Stiftelsen Fredrik Bachmans Minnesfond, 2019035
Note

This study was funded by The Swedish Transport Administration (2015/9482) and the Foundation Fredrik Bachmans minnesfond (2019035). The funding sources had no part in the study design, data collection, data analysis, or writing the article.

Available from: 2023-11-06 Created: 2023-11-06 Last updated: 2023-11-16Bibliographically approved
Janhäll, S., Genell, A. & Askemar, H. (2023). Hur påverkar hälsoeffekter planeringen avelektrifierade byggarbetsplatser?.
Open this publication in new window or tab >>Hur påverkar hälsoeffekter planeringen avelektrifierade byggarbetsplatser?
2023 (Swedish)Report (Other academic)
Abstract [en]

How does health and environment affect electrification of working sites? Electrification of construction sites mainly relates to climate emissions, but the local environment is also affected through reduced emissions of exhaust gases and engine noise. This work presents a way to take into account both noise and air pollution in the choice of which work machines should be electrified in the first place. The work is based on interviews and literature about emissions from different types of work machines, about how decisions about which work machines are used in different types of contracts are made, as well as current legislation about noise and air pollution and the exposure that people are at risk of being exposed to in different situations. The project also presents a first draft of a model to be able to compare different working equipment, but does not go into how noise and exhaust gases should be valued between each other, nor on emission factors for the combustion engines that the electric work machines are expected to replace. Instead, the focus is on identifying the decision-making paths and aligning the various expert areas of noise and air in the choice of which work machine should be prioritized for electrification.

Publisher
p. 37
Series
RISE Rapport ; 2023:108
Keywords
electrification, construction site, air quality, noise, planning, elektrifiering, byggarbetsplats, luftkvalitet, buller, planering
National Category
Civil Engineering
Identifiers
urn:nbn:se:ri:diva-67580 (URN)978-91-89821-88-0 (ISBN)
Note

Denna rapport redovisar delar av arbetet i AP3 i projektet Electric Worksite II. Energimyndigheten har finansierat studien.

Available from: 2023-11-01 Created: 2023-11-01 Last updated: 2024-02-28Bibliographically approved
Janhäll, S., Lööf, J. & Lane, A.-L. (2023). Normkritik och samarbeten inom fastighetsautomation.
Open this publication in new window or tab >>Normkritik och samarbeten inom fastighetsautomation
2023 (Swedish)Report (Other academic)
Abstract [en]

Norms, gender and collaboration in proptech Here, an engineering approach to norm criticism is used to study a male-dominated interdisciplinary digitization project in the area of prop tech. In property automation (prop tech) the participants are in principle exclusively men, and thus the platforms and program development that will be the basis for all prop tech development are coded in a male context. There are also major challenges, as in most interdisciplinary groups, where the balance of power is often skewed through different norms. The project has mainly addressed challenges due to the interdisciplinary groups, while the gender perspective has been given less focus. The focus on norms has been assigned a full work package, with a similar budget as the other work packages focused on other areas and the norm work package has interacted very closely with all parts of the project, including the more technical ones. In this way, the norm critics has created a platform of its own in the project, based on how a norm critical analysis could be offered to help other work packages in their tasks. Based on the work on norms; discussions, workshops and surveys have been supplemented with interviews, in close collaboration with other work packages. Through the norm-critical analysis, different groups, both within the project and in the industry around prop tech, have been identified. Differences between these groups relate to understanding of different types of technology, priorities, communication and balance of power. Norm criticism has been a way of supporting the entire project in both the expansion of business models and interaction between the various scientific areas that are part of the project. The norm criticism has been well received by the project group and many are aware that the industry is facing a change that requires new ways of thinking, new business models and new collaboration models. There is a new awareness in both the conversations within the project and the surveys and interviews based on the understanded need to see multiple perspectives. This awareness has also been used to broaden the business model. The understanding that it is more difficult to see the order of power for those who belong to the prioritized group has also increased. At the same time, we see a large effect of personal, or corporate, interest in norm criticism, which strongly influences how respondents react to the questions about norm criticism. The project shows that the method of using norm criticism in collaborative processes between different groups has been successful.

Publisher
p. 27
Series
RISE Rapport ; 2023:147
Keywords
Gender, norms, cooperation, proptech, normkritik, samarbete, fastighetsautomation
National Category
Civil Engineering
Identifiers
urn:nbn:se:ri:diva-68768 (URN)978-91-89896-37-6 (ISBN)
Available from: 2024-01-04 Created: 2024-01-04 Last updated: 2024-01-04Bibliographically approved
Rogerson, S., Costa, N., Ekholm, J., Besker, T., Janhäll, S., Linders, T. & Anderberg, P. (2022). SeaCharging - Investigating the Need for Standardised Charging Infrastructure for Maritime Electrified Vessels.
Open this publication in new window or tab >>SeaCharging - Investigating the Need for Standardised Charging Infrastructure for Maritime Electrified Vessels
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2022 (English)Report (Other academic)
Abstract [en]

The transport sector, including maritime transport, is facing accelerating electrification, where it is important that charging infrastructure is developed in parallel with electrified vessels. In today's few examples, charging technology is adapted to specific vessels and conditions. The possibility of using standards and standardisation to increase the efficiency of introducing electrified vessels has been the focus of the SeaCharging project. The middle segment of ships, such as waterborne public transport, is facing a rapid increase in electrification.

The project begins with an exploratory analysis of the current situation with charging stations in Sweden. This analysis covers the obstacles, needs and opportunities in different shipping segments and geographical areas. This results in an informative review providing input to standardisation committees, but also ports and shipping companies. Dissemination of the project’s results was achieved via a workshop, a number of seminars and this final report directed at the maritime, energy, technology, and standardisation communities. Together with Lighthouse, we will in early 2023, do a broad workshop for the whole sector, presenting the final project results and putting them into a wider context.

Publisher
p. 47
Series
RISE Rapport ; 2022:149
National Category
Vehicle Engineering
Identifiers
urn:nbn:se:ri:diva-64059 (URN)978-91-89757-39-4 (ISBN)
Note

This project is funded by Vinnova and the project group consists of the University ofGothenburg, SSPA, RISE and E-Sea. Much input has come from an expert group consisting ofimportant stakeholder groups, such as ports, authorities, technology suppliers and boat owners.The University of Gothenburg is the project coordinator. The Vinnova call funding this projectis coupled to the Council for Innovative and Climate-focused Standardization, which is initiatedby the Government and led by the National Board of Trade. The project group has presented itspreliminary results to the Council in December 2022.

Available from: 2023-02-23 Created: 2023-02-23 Last updated: 2024-02-14Bibliographically approved
Janhäll, S., Lundberg, J., Carlson, A. & Genell, A. (2022). Val av vägbeläggning : Hur påverkas buller, partiklar (vägdamm) och rullmotstånd?.
Open this publication in new window or tab >>Val av vägbeläggning : Hur påverkas buller, partiklar (vägdamm) och rullmotstånd?
2022 (Swedish)Report (Other academic)
Abstract [en]

Pavement choice - effects on noise, road dust and rolling resistance.

A literature review of environmental effects related to the choice of road pavement is presented here, starting from noise-reduced pavements, and with a focus on non-exhaust particles, as a great deal of research is being performed in the area of road dust. A simple description of pavements based on the Swedish Transport Administration's requirements introduces the description of the relationship between pavements and the three areas of noise, road dust and rolling resistance. The conclusions are that environmental aspects are important to address already when choosing the pavement. There is great potential to limit the negative environmental effects through pavement choices, especially if simpler connections can be made, e.g. using the ideas we present in this report. We recommend further research on functional relationships, especially in the particle domain where the relationships between pavement and emissions of non-exhaust particles is seldom quantified. The relationships between pavement and each of the parameters; noise; non-exhaust particles; and rolling resistance, need to be modelled to be able to understand the processes fully, preferably including friction. Road dust also creates a risk of reducing the acoustic life of porous pavements, i.e. a type of pavement reducing noise emissions. Including the resuspension of road dust in the emissions is of great importance to increase the possibilities of using pavement choices to limit road dust emissions. A first detailed description is published in this report.

Abstract [sv]

En litteraturgenomgång av miljöeffekter relaterade till val av vägbeläggning redovisas utgående från bullerreducerade beläggningar, och med fokus på slitagepartiklar, då det inom området pågår stor inhämtning av ny kunskap. En enkel beskrivning av beläggningar med utgångspunkt från Trafikverkets krav och råd har kompletterats med relationen till de tre områdena buller, partiklar och rullmotstånd. Slutsatserna är att miljöaspekter är viktiga att tas omhand redan vid beläggningsvalet. Det finns stor potential att begränsa de negativa miljöeffekterna genom beläggningsval, särskilt om enklare samband kan tas fram t.ex. med hjälp av de tankar vi presenterar i denna rapport. Vi rekommenderar ytterligare forskning om funktionssamband, särskilt inom partikelområdet där kvantifieringen av relationerna är begränsad. Relationerna mellan de variabler som beskriver vägytan behöver i en modell relateras till alla miljövariablerna, gärna inkluderande friktion. Att inkludera uppvirvlingen i emissionerna av vägdamm är av stor vikt för att öka möjligheterna att använda beläggningsval för att begränsa vägdammsemissionerna. En första ingående beskrivning publiceras i denna rapport. Vägdamm riskerar också att minska den akustiska livslängden hos de dränerande beläggningarna.

Publisher
p. 141
Series
RISE Rapport ; 2022:141
Keywords
road dust, pavement, noise, rolling resistance, PM10
National Category
Infrastructure Engineering
Identifiers
urn:nbn:se:ri:diva-61615 (URN)978-91-89757-30-1 (ISBN)
Available from: 2022-12-20 Created: 2022-12-20 Last updated: 2023-06-07Bibliographically approved
Lundberg, J., Janhäll, S., Gustafsson, M. & Erlingsson, S. (2021). Calibration of the Swedish studded tyre abrasion wear prediction model with implication for the NORTRIP road dust emission model. The international journal of pavement engineering, 22(4), 432-446
Open this publication in new window or tab >>Calibration of the Swedish studded tyre abrasion wear prediction model with implication for the NORTRIP road dust emission model
2021 (English)In: The international journal of pavement engineering, ISSN 1029-8436, E-ISSN 1477-268X, Vol. 22, no 4, p. 432-446Article in journal (Refereed) Published
Abstract [en]

An experimentally based prediction model of road abrasion wear due to studded tyres is available in Sweden and has been found to work well. However, it has not been validated since 2007, and since then road surfaces and tyre design have developed, and the question has arisen regarding the model’s current validity. The abrasion wear model is used in the NORTRIP emission model (NOn-exhaust Road Traffic Induced Particle emission modelling), and the effect of a recalibrated abrasion wear model on the emission model is shown. In this paper, the abrasion wear model is compared to full-scale field measurements at several recently constructed roads in Sweden to investigate its validity, while also proposing changes to allow for continued use. It is concluded that the model overestimates the wear and an update is suggested. In addition, the impact on NORTRIP emission predictions is briefly investigated. There were also indications that NORTRIP is affected by the abrasion model overestimating the contribution of pavement wear to the particle emissions.

Place, publisher, year, edition, pages
Taylor and Francis Ltd., 2021
Keywords
Abrasion wear, Model, Pavement, PM10, Road dust, Studded tyre, Dust, Erosion, Forecasting, Models, Pavements, Tires, Field measurement, Particle emissions, Prediction model, Road dust emissions, Road dusts, Abrasion
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-38974 (URN)10.1080/10298436.2019.1614585 (DOI)2-s2.0-85065747784 (Scopus ID)
Available from: 2019-06-10 Created: 2019-06-10 Last updated: 2023-06-07Bibliographically approved
Cea, B., Fraboulet, I., Feuger, O., Hugony, F., Morreale, C., Migliavacca, G., . . . Janhäll, S. (2021). Development and Evaluation of an Innovative Method Based on Dilution to Sample Solid and Condensable Fractions of Particles Emitted by Residential Wood Combustion. Energy & Fuels, 35(23), 19705
Open this publication in new window or tab >>Development and Evaluation of an Innovative Method Based on Dilution to Sample Solid and Condensable Fractions of Particles Emitted by Residential Wood Combustion
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2021 (English)In: Energy & Fuels, ISSN 0887-0624, E-ISSN 1520-5029, Vol. 35, no 23, p. 19705-Article in journal (Refereed) Published
Abstract [en]

An innovative and simple method based on dilution, named as the dilution chamber (DC), allowing the measurement of solid and condensable fractions of particulate matter emitted by residential wood combustion appliances has been developed, and its performances have been evaluated. The DC method was then tested by five European institutes (Ineris, ISSI/ENEA, DTI, and RISE) on advanced residential wood log/pellet stoves, under nominal output and low output combustion conditions and using different fuel types. The aim of the study was to evaluate the capability of the DC method to collect the condensable fraction. The DC method was compared with another manual method used to collect the solid and condensable fractions at the same time, the dilution tunnel (DT), on four sampling platforms. A third method, a combining heated filter and impinger filled in with isopropanol collection (SPC-IPA), was also used by Ineris only for comparison with the DC method. PM measurements based on the DC method globally showed a linear correlation with PM measurements based on DT (R2 ranged between 0.81 and 0.99, p < 0.05) specifically for the residential wood stoves under low output conditions when the condensable fraction contributes the most. An analysis and quantification of PAHs related to the total mass of PM of samples taken by the DC method and performed by ENEA/ISSI showed that it produces a condensation effect of semivolatile species comparable or even greater than the DT method. PM emission factors calculated from PM measurements based on the DC method were (i) about 2- to 20-fold higher for the residential wood stoves (EF ranged between 201 to 2420 g GJ-1) compared to those obtained for the residential pellet stoves (EF ranged between 108 to 556 g GJ-1) and (ii) of the same magnitude of PM emission factors from the literature or the EMEP/EEA air pollutant emission inventory guidebook.

Place, publisher, year, edition, pages
American Chemical Society, 2021
Keywords
Combustion, Dilution, Stoves, Wood, Emission factors, Innovative method, Measurement-based, Measurements of, Particulate Matter, Performance, PM emissions, Residential wood combustions, SIMPLE method, Wood stove, Housing
National Category
Energy Engineering
Identifiers
urn:nbn:se:ri:diva-57367 (URN)10.1021/acs.energyfuels.1c02595 (DOI)2-s2.0-85119917131 (Scopus ID)
Note

Funding details: Horizon 2020 Framework Programme, H2020; Funding details: European Metrology Programme for Innovation and Research, EMPIR; Funding details: National Physical Laboratory, NPL; Funding text 1: This work has been supported by the European Metrology Program for Innovation and Research (EMPIR) in the project context IMPRESS 2 coordinated by NPL UK. The EMPIR initiative is cofunded by the European Union’s Horizon 2020 research and innovation program and the EMPIR Participating States. Financial support from H2020 program is gratefully acknowledged. We thank all participants of the IMPRESS 2 project: the coordinator (NPL) and all the other National Metrology Institutes (CEM, CMI, PTB, RISE, VSL, VTT, CNR, DTI, DTU, ISSI, ENEA, Ineris, TU Delft, and UC3M). Ineris thanks Nicolas Karoski, Adrien Dermigny, Mehdi Dionigi, and Lars Schwarzer for their contribution to the combustion tests.

Available from: 2021-12-17 Created: 2021-12-17 Last updated: 2023-06-07Bibliographically approved
Janhäll, S., Petersson, M., Davidsson, K., Öman, T., Sommertune, J., Kåredal, M., . . . Rissler, J. (2021). Release of carbon nanotubes during combustion of polymer nanocomposites in a pilot-scale facility for waste incineration. NanoImpact, 24, Article ID 100357.
Open this publication in new window or tab >>Release of carbon nanotubes during combustion of polymer nanocomposites in a pilot-scale facility for waste incineration
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2021 (English)In: NanoImpact, ISSN 2452-0748, Vol. 24, article id 100357Article in journal (Refereed) Published
Abstract [en]

Nanocomposites, formed by incorporating nanoparticles into a matrix of standard materials, are increasing on the market. Little focus has been directed towards safe disposal and recycling of these new materials even though the disposal has been identified as a phase of the products' life cycle with a high risk of uncontrolled emissions of nanomaterials. In this study, we investigate if the carbon nanotubes (CNTs), when used as a filler in two types of polymers, are fully destructed in a pilot-scale combustion unit designed to mimic the combustion under waste incineration. The two polymer nanocomposites studied, polycarbonate (PC) with CNT and high-density polyethylene (HDPE) with CNT, were incinerated at two temperatures where the lower temperature just about fulfilled the European waste incineration directive while the upper was chosen to be on the safe side of fulfilling the directive. Particles in the flue gas were sampled and analysed with online and offline instrumentation along with samples of the bottom ash. CNTs could be identified in the flue gas in all experiments, although present to a greater extent when the CNTs were introduced in PC as compared to in HDPE. In the case of using PC as polymer matrix, CNTs were identified in 3–10% of the analysed SEM images while for HDPE in only ~0.5% of the images. In the case of PC, the presence of CNTs decreased with increasing bed temperature (from 10% to 3% of the images). The CNTs identified were always in bundles, often coated with remnants of the polymer, forming particles of ~1–4 μm in diameter. No CNTs were identified in the bottom ash, likely explained by the difference in time when the bottom ash and fly ash are exposed to high temperatures (~hours compared to seconds) in the pilot facility. The results suggest that the residence time of the fly ash in the combustion zone is not long enough to allow full oxidation of the CNTs. Thus, the current regulation on waste incineration (requiring a residence time of the flue gas >850 °C during at least 2 s) may not be enough to obtain complete destruction of CNTs in polymer composites. Since several types of CNTs are known to be toxic, we stress the need for further investigation of the fate and toxicity of CNTs in waste treatment processes.

Keywords
Waste incineration, Polymer, CNT, Particle, Fly ash, Nanocomposites
National Category
Energy Engineering
Identifiers
urn:nbn:se:ri:diva-58176 (URN)10.1016/j.impact.2021.100357 (DOI)
Available from: 2022-01-14 Created: 2022-01-14 Last updated: 2023-06-07Bibliographically approved
Svenson, P., Eriksson, K. & Janhäll, S. (2021). Resilience in systems of systems: electrified transport systems. In: 2021 16th International Conference of System of Systems Engineering (SoSE): . Paper presented at 2021 16th International Conference of System of Systems Engineering (SoSE) (pp. 162-167).
Open this publication in new window or tab >>Resilience in systems of systems: electrified transport systems
2021 (English)In: 2021 16th International Conference of System of Systems Engineering (SoSE), 2021, p. 162-167Conference paper, Published paper (Refereed)
Abstract [en]

The transport system is a large system of systems which currently faces challenges because of the climate-change-induced need to decrease the use of fossil fuels. The aim of mitigating climate change is realized in many parts of the transport system, concurrently and at high pace, which brings with it many challenges for the resilience of the system. By resilience, we mean the ability of a system to adapt due to disruptions and surprises. There are numerous links between the different systems that form the transport system and the actors responsible for available choices in the system of systems need to be identified. The aim of this paper is to identify requirements for developing a method for increasing resilience in the transport system. In this study a description of the electrified goods transport system as a system of systems is developed through a combination of researchers from different areas and discussions with experts mainly in the field of transport and governance. The resulting system of systems is presented in the paper together with a list of measures that will aid the development of a resilient electrified goods transport system. The measures are divided into technology, organisation and behaviour.

Keywords
Climate change, Fossil fuels, Faces, System of systems, Resilience, system-of-systems, goods transport, electrified transport
National Category
Energy Systems
Identifiers
urn:nbn:se:ri:diva-55987 (URN)10.1109/SOSE52739.2021.9497485 (DOI)
Conference
2021 16th International Conference of System of Systems Engineering (SoSE)
Available from: 2021-08-27 Created: 2021-08-27 Last updated: 2023-06-07Bibliographically approved
Fraboulet, I., Del-Gratta, F., Andersen, J. S., Warming-Jespersen, M. G., Bäckström, D., Janhäll, S., . . . Morreale, C. (2020). European inter-comparison campaigns on pm and OGCS atmospheric emissions test methods from residential wood combustion using a stack simulator generating real biomass combustion gases. In: European Biomass Conference and Exhibition Proceedings: . Paper presented at 28th European Biomass Conference and Exhibition, e-EUBCE 2020, 6 July 2020 through 9 July 2020 (pp. 812-816). ETA-Florence Renewable Energies
Open this publication in new window or tab >>European inter-comparison campaigns on pm and OGCS atmospheric emissions test methods from residential wood combustion using a stack simulator generating real biomass combustion gases
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2020 (English)In: European Biomass Conference and Exhibition Proceedings, ETA-Florence Renewable Energies , 2020, p. 812-816Conference paper, Published paper (Refereed)
Abstract [en]

The 20/20/20 target for Europe, will lead to an increased use of biomass combustion, e.g. using wood logs and wood pellets. On the other hand, the Air Quality Directive (2008/50/EC) lies down stringent requirements on maximum levels of particulate matter (PM) in the ambient air. Domestic wood combustion emits particulate matter (PM) which are of concern to authorities and the public. Several different methods of PM measurements have historically been used to perform type testing of solid fuelled residential appliances and boilers. This method shall give repeatable results that are of a guaranteed traceable accuracy, and by this means give the consumer reliable information on the suitability of a particular appliance or boiler. One of the main methods used in Europe consists of sampling the solid fraction of aerosols using a heated filter, this method does not include the collection of the condensable fraction, OGC measurements are performed using FID method.The aim of this work carried out within the EMPIR IMPRESS2 Project was to evaluate the performances of this method by performing intercomparisons using a stack simulator generating real biomass combustion gases.

Place, publisher, year, edition, pages
ETA-Florence Renewable Energies, 2020
Keywords
Domestic combustion, Environmental impact, Intercomparison, Measurement, Particle emission, Wood
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-51226 (URN)2-s2.0-85097373226 (Scopus ID)
Conference
28th European Biomass Conference and Exhibition, e-EUBCE 2020, 6 July 2020 through 9 July 2020
Available from: 2021-01-04 Created: 2021-01-04 Last updated: 2023-06-07Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-2679-2611

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