Saturday, November 05, 2022

Searching for the unique genes of a unique hare

Peer-Reviewed Publication

UNIVERSITY OF EASTERN FINLAND

A heath hare. 

IMAGE: A HEATH HARE IN SUMMER PELAGE © C.-G. THULIN. view more 

CREDIT: © C.-G. THULIN.

Researchers at the University of Eastern Finland, in collaboration with colleagues from the Swedish University of Agricultural Sciences (SLU, Sveriges lantbruksuniversitet), have published seven draft genomes for Nordic hare species.

The genomes include three heath hares (Lepus timidus sylvaticus), a subspecies of the mountain hare (Lepus timidus) that is unique to southern Scandinavia and western Estonia. Instead of a white winter pelage that is typical of boreal/arctic mountain hares (Lepus timidus timidus), the heath hare has a grey/blue winter pelage. It is generally believed that this form of winter coloration is a specific adaptation to the less reliable snow coverage in southern Scandinavia. The distribution of heath hares overlaps with that of the non-native brown hare, which seem to outcompete heath hares wherever they occur. Together with the threat from land use, this competition has pushed the uniquely adapted mountain hare subspecies at risk of going extinct.

Genomic knowledge helps to understand the genetic basis for traits that are important for specific adaptations and provides information about the evolutionary relationships as well as historical origins of the populations. Therefore, the first whole genome sequences from three heath hares were acquired along with two mountain hares, and two brown hares. Rather surprisingly, the genome of the heath hare differed notably from the nominal mountain hares, despite the thousands of years of coexistence, demonstrating that the subspecies difference is not restricted to local adaptation but represents a unique, old evolutionary divergence. This suggests that the heath hare colonized Scandinavia from the south after the most recent ice age, whereas the contemporary mountain hare probably arrived later from the northeast.

The obtained genome sequences are useful also for screening genetic variation that could be used for investigations of genetic differentiation and local adaptations. Hopefully, these sequence data will provide authorities with tools to assess the status of the unique heath hares and help conservation efforts.

Water cutoff countermeasures using disaster emergency wells

Finding the contribution of emergency well to emergency water supply during chaotic conditions

Peer-Reviewed Publication

OSAKA METROPOLITAN UNIVERSITY

Emergency well 

IMAGE: THE SURVEYS FOUND THAT THE USE OF EMERGENCY WELLS COMPLEMENTED THE KUMAMOTO CITY GOVERNMENT’S EMERGENCY WATER SUPPLY BY SPEEDING UP WATER DELIVERY AND IMPROVING ACCESS TO WATER. ON THE OTHER HAND, A LIMITED NUMBER OF WELFARE FACILITIES USED WATER FROM EMERGENCY WELLS, EVEN WHEN THEY WERE NEARBY. THIS INDICATES THAT PUBLICIZING EMERGENCY WELL LOCATIONS IS AN IMPORTANT POLICY ISSUE. view more 

CREDIT: TAKAHIRO ENDO, OSAKA METROPOLITAN UNIVERSITY

In recent years, large-scale natural disasters around the world have caused a series of water cutoffs, which seriously affect the quality of life of disaster victims. To address this, there has been growing interest in the viability of disaster emergency wells to mitigate water cutoffs during natural disasters.

A research group led by Professor Takahiro Endo from the Graduate School of Sustainable System Sciences at Osaka Metropolitan University conducted surveys of local well owners who supplied groundwater (91 organizations) and welfare facilities representing water users (328 facilities) that were affected by the 2016 Kumamoto Earthquake. The surveys clarified the status of groundwater use after the earthquake for suppliers and users, as well as policy issues surrounding the use of emergency wells.

“Groundwater has been considered an important resource for both industrial production and the natural environment, but this research has newly clarified that groundwater is also a disaster prevention resource,” explained Professor Endo.

Although there have been previous studies of groundwater use in disaster, most of these studies assessed future disasters, such as groundwater exploration techniques and estimation of groundwater availability in the event of water supply cutoffs. Groundwater is primarily provided during the chaotic period immediately after a disaster through private wells, which are scattered throughout the affected area. This makes keeping official records of groundwater usage difficult. So, up until now, emergency well usage after earthquakes was not thoroughly understood.

The surveys found that the use of emergency wells complemented the Kumamoto city government’s emergency water supply by speeding up water delivery and improving access to water. On the other hand, a reasonable number of welfare facilities did not use water from emergency wells, even when they were nearby. This indicates that publicizing emergency well locations is an important policy issue.

“This new data is very useful for city governments who have already installed or are considering installing emergency wells in the near future,” Professor Endo concluded.

###

Osaka Metropolitan University is a new public university established in April 2022, formed by merger between Osaka City University and Osaka Prefecture University. For more research news, visit https://www.upc-osaka.ac.jp/new-univ/en-research/research/, or follow @OsakaMetUniv_en and #OMUScience.

New technology to reduce potholes

Researchers have developed a new machine-learning technique that applies the Goldilocks principle to road compaction quality.

Peer-Reviewed Publication

UNIVERSITY OF TECHNOLOGY SYDNEY

Road roller 

IMAGE: ILLUSTRATION OF ROLLER–SOIL INTERACTION AND MECHANISMS INVOLVED. view more 

CREDIT: IMAGE: BEHZAD FATAHI

Researchers have developed new “intelligent compaction” technology, which integrates into a road roller and can assess in real-time the quality of road base compaction. Improved road construction can reduce potholes and maintenance costs, and lead to safer, more resilient roads.

Months of heavy rain and floods have highlighted the importance of road quality, with poor construction leading to potholes and road subsidence. This not only causes tyre blowouts and structural damage to cars and trucks, but also increases the chance of serious accidents.

The innovative machine-learning technique, which processes data from a sensor attached to construction roller, was developed by a research team from the University of Technology Sydney. The study was led by Associate Professor Behzad Fatahi, head of geotechnical and transport engineering, together with Professor Hadi Kahbbaz, Dr Di Wu and PhD student Zhengheng Xu.

“We have developed an advanced computer model that incorporates machine-learning and big data from construction sites to predict the stiffness of compacted soil with a high degree of accuracy in a fraction of second, so roller operators can make adjustments,” said Associate Professor Fatahi.

Roads are made up of three or more layers, which are rolled and compacted. The subgrade layer is usually soil, followed by natural materials such as crushed rock, and then asphalt or concrete on top. The variable nature of soil and moisture conditions can result in under or over-compacted material.

“Like Goldilocks, the compaction needs to be ‘just right’ to provide the correct structural integrity and strength. Over-compaction can break down the material and change its composition, and under-compaction can lead to uneven settlement,” said Associate Professor Fatahi.

“A well-compacted multi-layer road base provides a stable foundation and increases the capacity of a road to bear heavy loads. Trucks can weigh up to 40 tonnes, so a poor quality base can quickly lead to cracks and weak spots in the asphalt surface.”

The research, recently published in a peer reviewed journal Engineering Structuressuggests the application of this technology could help build longer-lasting roads that can better withstand severe weather conditions.

The team is now looking to test the new technology onsite for various ground and roller conditions for road, railway and dam construction projects, and explore techniques to measure density and moisture content of the compacted soil in real-time during construction.

Read the paper: Double-layered granular soil modulus extraction for intelligent compaction using extended support vector machine learning considering soil-structure interaction

Plant fibers for sustainable devices

Research into thermal properties of cellulose nanofibers yields surprising results

Peer-Reviewed Publication

UNIVERSITY OF TOKYO

Flow focusing and CNF 

IMAGE: THE APPARATUS TO CREATE THERMALLY CONDUCTING CNF USING DISORGANIZED CNF, WATER AND HYDROCHLORIC ACID (LEFT). A GRAPH SHOWING HOW THERMAL CONDUCTIVITY OF THE SAMPLE CHANGES WITH ITS DIAMETER. (RIGHT). view more 

CREDIT: ©2022 SHIOMI ET AL.

Plant-derived materials such as cellulose often exhibit thermally insulating properties. A new material made from nanoscale cellulose fibers shows the reverse, high thermal conductivity. This makes it useful in areas previously dominated by synthetic polymer materials. Materials based on cellulose have environmental benefits over polymers, so research on this could lead to greener technological applications where thermal conductivity is needed.

Cellulose is a key structural component of plant cell walls and is the reason why trees can grow to such heights. But the secret of its material strength actually lies in its overlapping nanoscopic fibers. In recent years, many commercial products have used cellulose nanofiber (CNF) materials because their strength and durability make them a good replacement for polymer-based materials such as plastics that can be detrimental to the environment. But now and for the first time, a research team led by Professor Junichiro Shiomi from the University of Tokyo’s Graduate School of Engineering has investigated previously unknown thermal properties of CNF, and their findings show these materials could be even more useful still.

“If you see plant-derived materials such as cellulose or woody biomass used in applications, it’s typically mechanical or thermally insulating properties that are being employed,” said Shiomi. “When we explored the thermal properties of a yarn made from CNF, however, we found that they show a different kind of thermal behavior, thermal conduction, and it’s very significant, around 100 times higher than that of typical woody biomass or cellulose paper.”

The reason yarn made from CNF can conduct heat so well is due to the way it’s made. Cellulose fibers in nature are very disorganized, but a process called the flow-focusing method combines cellulose fibers, orientating them in the same way, to create CNF. It’s this tightly bound and aligned bundle of rod-shaped fibers that allows heat to transfer along the bundle, whereas in a more chaotic structure it would dissipate heat more readily.

“Our main challenge was how to measure the thermal conductivity of such small physical samples and with great accuracy,” said Shiomi. “For this, we turned to a technique called T-type thermal conductivity measurement. It allowed us to measure the thermal conductivity of the rod-shaped CNF yarn samples which are only micrometers (a micrometer equaling one-thousandth of a millimeter) in diameter. But the next step for us is to perform accurate thermal tests on two-dimensional textilelike samples.”

Shiomi and his team hope that their investigation and future explorations into the use of CNF as a thermally conductive material could give engineers an alternative to some environmentally damaging polymers. In applications where heat transfer is important, such as certain electronic or computational components, it could greatly reduce the consequences of discarded electronic equipment, or e-waste, thanks to the biodegradable nature of CNF and other plant-based materials.

An artist’s interpretation of the way natural cellulose fibers are combined to form the CNF yarn, and a magnified section showing the nanoscopic rod-shaped filaments within the yarn bundle.

CREDIT

©2022 Junichiro Shiomi

Journal article: Guantong Wang, Masaki Kudo, Kazuho Daicho, Sivasankaran Harish, Bin Xu, Cheng Shao, Yaerim Lee, Yuxuan Liao, Naoto Matsushima, Takashi Kodama, Fredrik Lundell, L. Daniel Söderberg, Tsuguyuki Saito, Junichiro Shiomi. Enhanced High Thermal Conductivity Cellulose Filaments via Hydrodynamic Focusing”, Nano Letters, DOI: 10.1021/acs.nanolett.2c02057

Funding: This work was partially supported by JSPS KAKENHI (Grant No. 19K21928 and 22H04950) and JST CREST (JPMJCR21O2).

Useful links:
Graduate School of Engineering - https://www.t.u-tokyo.ac.jp/en/soe
Institute of Engineering Innovation - https://www.sogo.t.u-tokyo.ac.jp/en/
Department of Mechanical Engineering - http://www2.mech.t.u-tokyo.ac.jp/eng/

Research contact:
Professor Junichiro Shiomi
Graduate School of Engineering, The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
shiomi@photon.t.u-tokyo.ac.jp

Press contact:
Mr. Rohan Mehra
Public Relations Group, The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8654, Japan
press-releases.adm@gs.mail.u-tokyo.ac.jp

About the University of Tokyo
The University of Tokyo is Japan's leading university and one of the world's top research universities. The vast research output of some 6,000 researchers is published in the world's top journals across the arts and sciences. Our vibrant student body of around 15,000 undergraduate and 15,000 graduate students includes over 4,000 international students. Find out more at www.u-tokyo.ac.jp/en/ or follow us on Twitter at @UTokyo_News_en.

Duke-NUS researchers find polluting particles in the air are linked to cardiac arrests

Research in Singapore confirms a link between tiny particulates in air pollution and sudden cardiac arrests in the general population.

Peer-Reviewed Publication

DUKE-NUS MEDICAL SCHOOL

SINGAPORE, 4 November 2022 – Small particles in air pollution in Singapore might have caused sudden cardiac arrests in some people who were not in hospital but simply going about their normal lives, according to scientists at Duke-NUS Medical School working with the National Environment Agency (NEA) as part of the Pan-Asian Resuscitation Outcomes Study (PAROS). Published in The Lancet Public Health, this finding, which is based on data collected between 2009 and 2018, resolves the uncertainty caused by inconsistencies in earlier studies due to limitations in the availability and quality of environmental and disease data.

The study team, which includes members from NEA’s Environmental Health Institute and the Environmental Monitoring and Modelling Division of the Clean Environment Group, assessed whether there was a correlation between out-of-hospital cardiac arrests (OHCA) and the levels of tiny air pollution particles that are at least 25 times smaller than the width of a human hair. This PM2.5 category of particulate matter is known from previous research to significantly increase the risk of cardiovascular, respiratory and even ocular diseases.

“We have produced clear evidence of a short-term association of PM2.5 with out-of-hospital cardiac arrest, which is a catastrophic event that often results in sudden death,” said Adjunct Assistant Professor Joel Aik, lead investigator of the study from Duke-NUS’ Pre-Hospital & Emergency Research Centre (PERC).

This study, which follows a methodology similar to that used in studies referenced by the World Health Organization to set air quality guidelines, based its findings on data reported to PAROS on all cases of OHCA in Singapore between July 1, 2009, and December 31, 2018. The timing of these cases was compared with the daily air pollutant levels over the same period.

Statistical analysis identified 492 out of 18,131 OHCA events that the researchers were able to attribute to an increase in PM2.5 concentrations either on the day of the cardiac arrest or up to two days before. The study also identified a clear reduction in risk from three to five days after exposure to the pollutant, suggesting a relatively short-term effect.

The average PM2.5 concentration during the study period was 18.44 micrograms per cubic metre, and a decrease of just one microgram resulted in an eight per cent reduction in the number of OHCA events, while a decrease of three micrograms brought a 30 per cent reduction.

“These results make it clear that efforts to reduce the levels of air pollution particles in the 2.5 micrograms or lower range, and steps to protect against exposure to these particles, could play a part in reducing sudden cardiac arrests in Singapore’s population, while also reducing the burden on health services,” said Dr Aik, who is also an environmental epidemiologist with the NEA.

He emphasised the relevance of this research to many cities around the world where air pollution is an everyday problem. Less common but extreme events, such as haze and wildfires, can also lead to sudden and dramatic increases in PM2.5 particles. Despite the consistency in study findings with those elsewhere, and a biologically plausible mechanism of effect of PM2.5 on OHCA events, he cautioned that this was an observational study and does not imply direct causation.

“This study provides strong evidence for the impact of air quality on health and should stimulate policy and ground efforts to manage emissions from key sources that can lead to PM2.5 increases and prevent potential harm to public health,” said Professor Marcus Ong, Director of the Health Services & Systems Research Programme and PERC at Duke-NUS and Chairman of PAROS. “New policy interventions, such as phasing out internal combustion engine vehicles, can help to reduce the dangers.”

Prof Ong, who is also Senior Consultant at the Department of Emergency Medicine at Singapore General Hospital, added, “Individuals can also take simple but significant steps, such as wearing high efficiency air filtration masks during periods when the PM2.5 levels are elevated and not smoking.”

Research into post-Grenfell building safety remediation calls for a resident-centred approach

Reports and Proceedings

UNIVERSITY OF SHEFFIELD

  • Over five years from the Grenfell building safety scandal, leaseholders in apartment buildings are still living through significant disruption whilst fire safety issues are addressed
  • Among leaseholders living in buildings undergoing remediation, the most frequently mentioned problems included noise, the erosion of privacy at home, and the loss of a sense of safety and security
  • Communication during works was often challenging, with significant demand from leaseholders for more frequent and detailed information about the work that was being carried out on buildings
  • Experts call for a greater involvement of leaseholders in the planning of work, and a focus on promoting a liveable environment during works

Leaseholders in England still living through remediation work to their buildings years after the Grenfell tragedy are not having their views or experiences heard, according to a new report published today [Friday 4 November 2022] from the University of Sheffield.

In the wake of the Grenfell tragedy, in which 72 people lost their lives due to the rapid spread of a fire on 14 June 2017, apartment buildings around the country were found to require the replacement of flammable cladding systems and other fire-safety defects. 

This work often requires buildings to be covered in scaffolding and wrapped in mesh or plastic for many months – or even years – whilst external walls are stripped back and replaced with safer materials. This often takes place whilst people are still living in the building. 

The new study, which interviewed leaseholders about their experiences of living through those building safety remediation works, forms the basis of an online exhibition for the ESRC Festival of Social Science opening on Saturday 5 November and featuring images and stories from those affected.

The research found little evidence that the views, preferences and opinions of leaseholders had been considered in the planning remediation works, with the result that many leaseholders felt that they were not viewed as an important stakeholder in the remediation process, resulting in a range of negative impacts affecting their quality of life and mental wellbeing.

Dr Jenny Preece, from the UK Collaborative Centre for Housing Evidence at the University of Sheffield authored the study, she said: “Earlier this year MPs discussed the conditions in buildings undergoing remediation for fire safety problems, with Tom Hunt MP arguing that he would feel guilty about an animal living in such conditions, never mind a human being. Speaking with leaseholders living through remediation, our research shows clear negative impacts on mental wellbeing.

“The fundamental problem in many cases is that there has been little attention to the experiences of those living through the work, and whose homes and day-to-day lives are affected. Many leaseholders feel that they are not viewed as having an important viewpoint when remediation works are being planned, nor is the experience of those living in homes through building work at the forefront of decision-making for those responsible for these projects.”

In the study, many leaseholders reported significant impacts on their ability to feel at home during on-going works. The most frequently mentioned problems included the noise of the works, the way in which work infringed on privacy at home, and the loss of a sense of safety and security.

“I’m not comfortable at home…When there are builders working, they’re walking around. They like to have a good look in, so there’s…no privacy at all…In the bedrooms the blinds are down constantly, and I worry about my safety.”

(Alana*, female, 35-44, South-East)

Leaseholders also experienced the loss of light from scaffolding and coverings such as plastic wrapping and mesh, restricted ventilation, and the loss of access to outside private and communal space. Many leaseholders reported that contractors working on site seemed unfamiliar with working on occupied buildings, highlighting issues such as people staring into their homes, eating lunch outside their windows, and smoking.

Many leaseholders experienced difficulties in communication with the different individuals and organisations involved in remediation projects. They described negative experiences, such as being unable to get answers to questions about the building work, or being ignored or dismissed as a nuisance.

These experiences added to the feeling that there was a lack of care and attention to the fact that these are people’s homes, and that they are often occupied by people working during the day. Because of the way in which remediation was undertaken, in some cases leaseholders were living in these conditions for years.

“They didn’t need to scaffold the whole building…they rushed to scaffold the whole building and cover it in plastic…People on the lower floors…they’re just sitting there… when what you could have done is scaffold one part, finish that work, move on…Or okay, scaffold it, but don’t cover the whole damn thing in plastic. Work in stages.”

(Priya*, female, 45-54, South-East)

The research findings suggest a number of steps that those responsible for remediation projects, and contractors working on-site, can take to improve the experience of those living through building work:

1.     Involvement and liveability in planning remediation – leaseholders should be recognised as key stakeholders in remediation, with their views, opinions and preferences helping to shape the approach

2.     Consultation and choice – leaseholders should be given meaningful choices relating to the conduct of remediation works and the materials used.

3.     Communication – a communications plan should set out responsibilities and expectations around communication between different parties and leaseholders.

4.     Daily working practices for those working on-site – all individuals working on site should be mindful of working on occupied buildings, making adjustments to working behaviour.

5.     Assurance – quality assurance mechanisms should be built into remediation projects, with outcomes communicated to leaseholders.

One of the key reasons that leaseholders gave for taking part in the research was their desire to help improve conditions for others who would be going through remediation work in the future.

As there are many buildings in which work is yet to start, there is a real  opportunity to take some simple steps to reduce the negative impacts for people who are living through these major programmes of work.

Dr Preece said: “Promoting a liveable environment and mitigating negative impacts of works on leaseholders should be a top priority. This includes more frequent and detailed information about what work is taking place, to help people to anticipate disruption and minimise the negative impact; for example by rescheduling some work activities, or leaving the home at particular hours.

“Many contractors may also be more familiar with working on empty buildings during construction or refurbishment. So contractors working on-site should be briefed about the building safety context, and the measures that can be taken to minimise disruption for those living through works. Small changes like eating and chatting away from homes, being mindful of language, minimising noise, respecting privacy and tidying up each day can make a real difference for people, showing that you have thought about the experience for those at home.

“As people are often living in buildings through some or all of the remediation works, we need to start thinking about how to maximise and promote liveability as part of these projects. In many cases, leaseholders are living through months of disruption, which can really wear people down. Those responsible for remediation need to recognise that leaseholders should have a voice in the decisions that affect their homes. This means involving them in the planning of remediation work, and taking account of their views when making key decisions.”

Read the full report and recommendations here: https://housingevidence.ac.uk/publications/learning-from-experiences-of-remediation-in-the-building-safety-crisis 

ENDS

Media contact: Rebecca Ferguson, Media Relations Officer, 0114 222 3670, r.l.ferguson@sheffield.ac.uk

Notes to editor:

  • * All names are pseudonyms to protect the anonymity of participants.
  • The work was funded by the Crook Public Service Fellowship at the University of Sheffield, and the UK Collaborative Centre for Housing Evidence.

The University of Sheffield

With almost 29,000 of the brightest students from over 140 countries, learning alongside over 1,200 of the best academics from across the globe, the University of Sheffield is one of the world’s leading universities.

A member of the UK’s prestigious Russell Group of leading research-led institutions, Sheffield offers world-class teaching and research excellence across a wide range of disciplines.

Unified by the power of discovery and understanding, staff and students at the university are committed to finding new ways to transform the world we live in and develop solutions to society’s biggest challenges.

Sheffield researchers use their expertise to tackle some of the biggest issues of our time together with partners ranging from SMEs to some of the world’s biggest companies, from across the South Yorkshire region, the UK and beyond.

The University of Sheffield provides an outstanding student experience for its students, with the number one Students’ Union in the UK and both undergraduate and postgraduate degrees that help its students stand out in the jobs market and develop successful careers after graduation, wherever they choose to live and work.

Sheffield has six Nobel Prize winners among former staff and students and its alumni go on to hold positions of great responsibility and influence all over the world, making significant contributions in their chosen fields.

Global research partners and clients include Boeing, Rolls-Royce, Unilever, AstraZeneca, GlaxoSmithKline, Siemens and Airbus, as well as many UK and overseas government agencies and charitable foundations.

The UK Collaborative Centre for Housing Evidence

The UK Collaborative Centre for Housing Evidence (CaCHE) is a multidisciplinary partnership between academia, housing policy and practice, funded by the Economic and Social Research Council, Arts and Humanities Research Council, and Joseph Rowntree Foundation. 


Socially responsible companies laid off more workers than their peers during the COVID-19 pandemic

Reports and Proceedings

UNIVERSITY OF VAASA

Veda Fatmy 

IMAGE: VEDA FATMY view more 

CREDIT: RIIKKA KALMI, UNIVERSITY OF VAASA

A good track record in corporate social responsibility (CSR) is not a guarantee that the company will continue to focus on CSR in times of crisis. According to a new study from the University of Vaasa, US companies with a history of high CSR laid off more employees during the COVID-19 pandemic than their peers.

Doctoral candidate Veda Fatmy says that the high level of CSR may not be a good indicator of job security during economic crises, such as the financial and unemployment crisis brought on by the Covid-19 pandemic.

– In fact, high-CSR firms were shown to have laid off significantly more employees in the U.S. in 2020. The number of laid-off workers was 1.5 times higher, says Fatmy, who defended her doctoral dissertation on Friday 4th of November.

According to Fatmy, this phenomenon may be due to these companies' higher resources and strategic agility, which improves the outcomes of complicated restructuring decisions.

– This new finding serves also as a warning that CSR may not always benefit workers and other vulnerable stakeholders. Employees should remain cautious about the effectiveness of CSR. While social responsibility is meant to safeguard the well-being of the employees and the community at large, during crises these values may be left by the wayside in pursuit of short-term gains.

Do companies and their employees benefit from CSR?

Veda Fatmy's doctoral dissertation focuses on contemporary CSR-related policies and how they shape stakeholders' expectations, corporate behaviour, and financial outcomes.
Companies with high levels of social responsibility are more likely to be inclusive and diverse, uphold a higher standard of transparency, and offer higher benefits and compensation. These features help attract highly skilled workers, which contributes to the competitive advantage of the firm. However, it is not a good idea to rely blindly on the company's track record on corporate social responsibility.

Fatmy has researched, whether CSR policies that support sexual minorities have an effect on the company's financial performance. The results show that LGBTQ friendliness has a positive effect on the profitability and value of US companies. The doctoral study also finds that LGBTQ-friendly companies are more innovative and produce more useful patents than other companies.

The positive effects of CSR are influenced by local socio-political factors

Local values may influence how socially responsible activities affect the bottom line. According to the dissertation, the effect of progressive LGBTQ policies on profitability and market value was weaker or non-existent for US companies headquartered in politically or religiously conservative regions.

Demographic and cultural factors not only transform the effects of CSR on firm performance but also help determine the extent to which a firm may engage in socially responsible practices. For instance, religiosity, factored in as both external influence from the community and internal firm culture, is positively associated with overall CSR. Specifically, firms that are more religious perform better at product responsibility, emissions reductions, and responsible use of resources.

Fatmy's doctoral research was conducted using a sample of publicly traded U.S. firms. The effects of LGBTQ-friendliness on firm performance are studied over the period 2003–2016, and on innovation over 2003–2017. Religiosity’s effect on CSR is studied over the period 2012–2020, and the effects of CSR on COVID-19 layoffs are studied using data from 2012–2020.

Dissertation

Fatmy, Veda (2022) Essays on Corporate Social Responsibility and its Efficacy in Value Creation. Acta Wasaensia 493. Doctoral dissertation. University of Vaasa.

Public defence

The public examination of M.Sc. Veda Fatmy’s doctoral dissertation”Essays on Corporate Social Responsibility and its Efficacy in Value Creation” was successfully held on Friday, 4th of November at noon at the University of Vaasa. Professor Markku Kaustia (Aalto University) acted as the opponent and Professor Sami Vähämaa as the custos.

Magnetized dead star likely has solid surface

A signature in the X-ray light emitted by a highly magnetised dead star known as a magnetar suggests the star has a solid surface with no atmosphere, according to a new study by an international team involving UCL (University College London) researchers.

Peer-Reviewed Publication

UNIVERSITY COLLEGE LONDON

Artist's impression of a magnetar in the star cluster Westerlund 1. 

IMAGE: THIS ARTIST’S IMPRESSION SHOWS A MAGNETAR IN THE STAR CLUSTER WESTERLUND 1. view more 

CREDIT: ESO/L. CALÇADA. HTTPS://WWW.ESO.ORG/PUBLIC/IMAGES/ESO1415A/

The study, published in the journal Science and led by researchers at the University of Padova, uses data from a NASA satellite, the Imaging X-ray Polarimetry Explorer (IXPE), which was launched last December. The satellite, a collaboration between NASA and the Italian Space Agency, provides a new way of looking at X-ray light in space by measuring its polarisation – the direction of the light waves’ wiggle.  

The team looked at IXPE’s observation of magnetar 4U 0142+61, located in the Cassiopeia constellation, about 13,000 light years away from Earth. This was the first time polarised X-ray light from a magnetar had been observed.

Magnetars are neutron stars – very dense remnant cores of massive stars that have exploded as supernovae at the ends of their lives. Unlike other neutron stars, they have an immense magnetic field – the most powerful in the universe. They emit bright X-rays and show erratic periods of activity, with the emission of bursts and flares which can release in just one second an amount of energy millions of times greater than our Sun emits in one year. They are believed to be powered by their ultra-powerful magnetic fields, 100 to 1,000 times stronger than standard neutron stars.

The research team found a much lower proportion of polarised light than would be expected if the X-rays passed through an atmosphere. (Polarised light is light where the wiggle is all in the same direction – that is, the electric fields vibrate only in one way. An atmosphere acts as a filter, selecting only one polarisation state of the light.)

The team also found that, for particles of light at higher energies, the angle of polarisation – the wiggle – flipped by exactly 90 degrees compared to light at lower energies, following what theoretical models would predict if the star had a solid crust surrounded by an external magnetosphere filled with electric currents.

Co-lead author Professor Silvia Zane (UCL Mullard Space Science Laboratory), a member of the IXPE science team, said: “This was completely unexpected. I was convinced there would be an atmosphere. The star’s gas has reached a tipping point and become solid in a similar way that water might turn to ice. This is a result of the star’s incredibly strong magnetic field.

“But, like with water, temperature is also a factor – a hotter gas will require a stronger magnetic field to become solid.

“A next step is to observe hotter neutron stars with a similar magnetic field, to investigate how the interplay between temperature and magnetic field affects the properties of the star’s surface.”

Lead author Dr Roberto Taverna, from the University of Padova, said: “The most exciting feature we could observe is the change in polarisation direction with energy, with the polarisation angle swinging by exactly 90 degrees.

“This is in agreement with what theoretical models predict and confirms that magnetars are indeed endowed with ultra-strong magnetic fields.”

Quantum theory predicts that light propagating in a strongly magnetised environment is polarised in two directions, parallel and perpendicular to the magnetic field. The amount and direction of the observed polarisation bear the imprint of the magnetic field structure and of the physical state of matter in the vicinity of the neutron star, providing information inaccessible otherwise.

At high energies, photons (particles of light) polarised perpendicularly to the magnetic field are expected to dominate, resulting in the observed 90-degree polarisation swing.

Professor Roberto Turolla, from the University of Padova, who is also an honorary professor at the UCL Mullard Space Science Laboratory, said: “The polarisation at low energies is telling us that the magnetic field is likely so strong to turn the atmosphere around the star into a solid or a liquid, a phenomenon known as magnetic condensation.”

The solid crust of the star is thought to be composed of a lattice of ions, held together by the magnetic field. The atoms would not be spherical, but elongated in the direction of the magnetic field.

It is still a subject of debate whether or not magnetars and other neutron stars have atmospheres. However, the new paper is the first observation of a neutron star where a solid crust is a reliable explanation.

Professor Jeremy Heyl of the University of British Columbia (UBC) added: “It is also worth noting that including quantum electrodynamics effects, as we did in our theoretical modelling, gives results compatible with the IXPE observation. Nevertheless, we are also investigating alternative models to explain the IXPE data, for which proper numerical simulations are still lacking.”