Tuesday, March 11, 2025

 

Adults abused as children twice as likely to develop health and mental health conditions




The presence of a protective adult in the home was associated with better outcomes in the wake of physical and sexual abuse, providing promising insights for intervention efforts



Peer-Reviewed Publication

University of Toronto





Toronto, ON – A new study published this week in Child Maltreatment found that in comparison to those who had not been abused in childhood, adults who had experienced both childhood physical and sexual abuse had approximately double the odds of physical and mental health conditions, including angina, arthritis, asthma, COPD, heart attack, depression, and disability -- even after considering respondents’ age, race, income, and health behaviors, as well as obesity.

Those who had been sexually abused, but not physically abused, were 55% to 90% more likely to experience these health outcomes compared to their peers who had not experienced any abuse. Adults who were physically abused, but not sexually abused, also had significantly elevated odds of these health outcomes compared to the non-abused, but the associations were more modest (between 20% to 50%).

“People don’t typically think about the impact early adversities can have on health outcomes later in life,” says first author Shannon Halls, a Research Coordinator at University of Toronto’s Institute for Life Course and Aging. “Our research underscores the harmful associations between early adversities, such as sexual and/or physical abuse, and a wide range of health issues in adulthood.”

In exploring this association, the study also examined whether the presence of an adult in the home who made the child feel safe and protected was associated with better long-term health outcomes among children who experienced abuse.

“We found that when children experiencing abuse had a protective adult in their home, the negative impact of abuse on their health as adults was less severe,” says co-author Andie MacNeil, a doctoral student at the Factor-Inwentash Faculty of Social Work (FIFSW).

“Though more research is needed to pinpoint the precise mechanisms, it is evident that these relationships can play a key role in supporting children and mitigating the adverse health effects of abuse.”

The presence of a protective adult was not only important for children who had experienced abuse, but important for children who had not been abused as well. Children without a protective adult in their home, irrespective of childhood abuse status, were 20% to 40% more likely to experience adverse physical health outcomes and twice as likely to suffer from depression in adulthood.

“The implication here is that lacking the safe and stable relationships with adults can be just as harmful to children’s health as being physically abused,” says senior author Esme Fuller-Thomson, a Professor at FIFSW and Director for the Institute of Life Course and Aging at the University of Toronto.

The study’s authors point to the need for future research to unpack these findings in particular.

“It will be important in future research to investigate why some adults in the home are not adequately protective of children, and to discuss potential primary prevention interventions that can help parents provide a more protective environment for children,” said co-author Philip Baiden, an Associate Professor in the School of Social Work at the University of Texas at Arlington

The study analyzed data from the 2021 and 2022 Behavioural Risk Factor Surveillance System, a large representative sample from which over 80,000 adult U.S. respondents were included.

“Our research shows the importance of positive relationships between children and the adults in their lives” says Halls. “We hope that these findings can contribute to a better understanding for creating effective programs targeted at children experiencing abuse.”

 

A dive into erythritol slurry and its potential for waste heat recovery



Scientists study the effect of density difference on the rheological behavior of erythritol slurry




Shinshu University

Grayscale map of the average power-law index with particle Reynolds number and solid fraction 

image: 

This image depicts the relationship between these three important properties, which together determine the rheological behavior of erythritol slurry. Understanding the correlation between them could lead to more efficient waste heat transport and storage systems, contributing to more efficient industrial processes.

view more 

Credit: Shunsuke Abe of Shinshu University (https://www.sciencedirect.com/science/article/pii/S0894177725000238?via%3Dihub)




Energy efficiency is crucial for sustainability, yet vast amounts of low-temperature waste heat remain unused in industrial processes. Now, researchers from Japan have investigated erythritol slurry as a promising heat transfer medium for thermal storage and transport. By analyzing its flow behavior and non-Newtonian properties, they developed a predictive equation for its rheological characteristics. Their findings could help guide the design of industrial waste heat recovery systems, advancing energy efficiency and carbon neutrality.

Energy efficiency is one of the most important pillars of our global sustainability goals. Simply put, one of the most straightforward and effective ways of minimizing carbon emissions is making the most out of every unit of energy produced and consumed. One severely underutilized resource is factory waste heat, especially in the low-temperature range (<230 °C).

Many researchers around the world are exploring ways of making use of such waste heat as thermal energy, either by directly repurposing it in industrial operations or converting it into other useful forms, such as residential heating. Of course, the first step would be to get this waste heat where it needs to be, which requires a latent heat storage and transport system. Over the past few decades, interest in using phase change material (PCM) slurries for this purpose has steadily increased. PCM materials exchange a lot of heat when they undergo a phase transition, making them promising for managing waste heat. 

Against this backdrop, a research team led by Project Assistant Professor Shunsuke Abe from Shinshu University, Japan, has focused on erythritol slurry as a promising heat transfer medium. In their latest study, which was published online in Experimental Thermal and Fluid Science on February 06, 2025, they investigated the rheological properties of this sugar alcohol-based mixture, hoping to gain new insights and pave the way to more efficient thermal storage and transport. The study was co-authored by Mr. Hikaru Ebihara, a graduate student, and Associate Professor Tatsunori Asaoka, both from Shinshu University.

More specifically, the researchers sought to analyze how density differences between the dispersed erythritol particles and carrier fluid (erythritol aqueous solution) influenced the slurry’s flow pattern, and rheological behavior. To achieve this, they conducted a series of experiments under laminar flow conditions in a horizontal circular tube, systematically measuring pressure drop and flow rate while adjusting the solid fraction and the density difference between dispersed erythritol particles and the carrier fluid (erythritol aqueous solution).

Worth noting, erythritol slurry exhibits non-Newtonian behavior, meaning its viscosity changes depending on flow conditions. The team observed that, at higher solid fractions and lower carrier concentrations, the non-Newtonian characteristics of the slurry became more pronounced, exhibiting a greater decrease in viscosity the higher the flow rate. On the other hand, at lower solid fractions, carrier concentration had little effect on this property.

To better characterize this behavior, the researchers analyzed the slurry’s particle Reynolds number, a value that describes how solid particles interact with the surrounding fluid based on slurry velocity, density difference, carrier fluid viscosity, and particle size. Their results indicated that the particle Reynolds number, along with solid fraction, plays a key role in predicting non-Newtonian effects. This allowed them to develop a correlation between these parameters and the power-law index, which quantifies the degree of non-Newtonian behavior. “This finding provides a new approach for predicting the transport properties of this and other PCM slurries, which would be essential in the design of energy-efficient thermal transport systems,” notes Dr. Abe.

The implications of this study are many, as understanding the rheological properties of PCM slurries could lead to various sustainability-oriented applications. One example is waste heat recovery in factories and power plants, where erythritol slurry can be used to capture and efficiently transport unused low- to medium-temperature waste heat. This addresses a significant energy loss point in manufacturing and power generation.

Hot water supply and HVAC systems in residential and commercial buildings represent another promising area of application. “Thermal storage systems utilizing PCM slurries can store heat during off-peak hours and release it when needed, effectively balancing energy loads, improving efficiency, and reducing peak power demand—a critical factor in grid stability,” explains Dr. Abe.

Additionally, PCM slurries could be used in cogeneration systems, also known as combined heat and power (CHP). These systems generate both electricity and useful heat from a single energy source, significantly improving efficiency compared to conventional power generation methods. By integrating PCM slurries, these systems would be able to store excess heat and release it when needed, optimizing waste heat utilization, and making cogeneration a more cost-effective solution.

Through insight and innovation, this study will serve as a stepping stone towards a carbon-neutral future, one where we make the most out of available energy in its many forms.

 

###

 

About Shinshu University

Shinshu University is a national university founded in 1949 and located nestling under the Japanese Alps in Nagano known for its stunning natural landscapes. Our motto, "Powered by Nature - strengthening our network with society and applying nature to create innovative solutions for a better tomorrow" reflects the mission of fostering promising creative professionals and deepening the collaborative relationship with local communities, which leads to our contribution to regional development by innovation in various fields. We’re working on providing solutions for building a sustainable society through interdisciplinary research fields: material science (carbon, fiber and composites), biomedical science (for intractable diseases and preventive medicine) and mountain science, and aiming to boost research and innovation capability through collaborative projects with distinguished researchers from the world. For more information visit https://www.shinshu-u.ac.jp/english/ or follow us on X (Twitter) @ShinshuUni for our latest news.

 

 

 

 

A call for federally funded pediatric firearm injury prevention research



New study highlights the need for an investment in firearm injury prevention research to reduce rising fatality and injury rates.



Boston Children's Hospital



BOSTON, MASSACHUSETTS – Firearm-related injuries are the leading cause of death among children and adolescents in the United States, yet research on firearm injury prevention receives significantly less federal funding compared to other major pediatric health concerns. A new paper published in Pediatrics underscores the critical need for an enhanced federal investment in firearm injury prevention research to address the rising rates of fatalities and injuries.

“Expanding the field of firearm injury prevention research is crucial to reverse the devastating trends of firearm violence in the United States,” says lead author Lois Lee, MD, MPH, from the Division of Emergency Medicine at Boston Children’s Hospital. “Increased funding will enable researchers to develop diverse, multi-disciplinary research infrastructure to better understand the risks and protective factors of firearm violence, design community, hospital, and school-based interventions, and create comprehensive databases to inform policy and reduce firearm-related injuries and deaths.”

Historical data analysis conducted by Alex Butler, MD, Chief Resident at Boston Children’s Hospital, reveals the limited federal funding patterns for firearm injury prevention research. In the early 1990s, the Centers for Disease Control and Prevention (CDC) funded rigorous research on firearms, but the passage of the Dickey Amendment in 1996 restricted federal funding for gun violence research. In response to rising mass shootings in the 2000s, Congress allocated $25 million in 2020 for firearm injury prevention research, divided equally between the CDC and the National Institutes of Health (NIH). However, funding has remained stagnant at this level through 2024.

The authors draw a parallel to compare the substantial progress made in pediatric cancer research, which federal funding has significantly supported. Over the past 25 years, this investment has led to major advancements that have resulted in a 30% reduction in childhood cancer fatality rates and significant improvements in the quality of life for children during and after treatment. “Federal investment has driven major progress in fields like pediatric cancer and motor vehicle safety,” said senior author Nancy Andrews, MD, PhD, Chief Scientific Officer at Boston Children’s Hospital. “A similar commitment to firearm injury prevention research is essential to addressing this public health crisis.”

###

About Boston Children’s Hospital
Boston Children’s Hospital is ranked among the best children’s hospitals in the nation by U.S. News & World Report and is a pediatric teaching affiliate of Home to the world’s largest research enterprise based at a pediatric medical center, Boston Children’s has led the way in life-changing pediatric innovation since its founding in 1869. Today, 3,000 researchers and scientific staff, including 14 members of the National Academy of Sciences, 37 members of the National Academy of Medicine and 13 Howard Hughes Medical Investigators across ~1M square feet of lab space comprise the research community. From bench to bedside, scientists work on preventing, treating, and curing diseases that impact both children and adults, no matter how rare or complex the condition. Founded as a 20-bed hospital for children, Boston Children’s is now a 491-bed comprehensive center for pediatric and adolescent health care.

With nine satellite locations and the Martha Elliot Health Center, Boston Children’s also provides 24/7 pediatric care at five hospitals including Beverly Hospital, Winchester Hospital, St. Luke’s Hospital, South Shore Hospital and Cape Cod Hospital.Boston Children’s also includes: Affiliation with Franciscan Children’s Hospital, including 112 beds and 700+ employees; Boston Children’s Primary Care Alliance, a robust network of 33 pediatric practices serving patients and families throughout Massachusetts; The Pediatric Physicians’ Organization at Boston Children’s Hospital (PPOC) with more than 400 physicians, nurse practitioners, and physician assistants devoted exclusively to pediatric primary care, in close collaboration with subspecialists at Boston Children’s in more than 90 locations throughout Massachusetts; Boston Children’s Health Physicians (BCHP) which is the largest pediatric multispecialty group in New York's Metropolitan Area, the Hudson Valley, and Connecticut, including nearly 300 clinicians in more than 60 locations.


For more, visit our Answers blog and follow us on FacebookYouTube, and LinkedIn.

 

Untangling quantum entanglement with new calculation formulas


Scientists develop simplified formulas to quantify quantum entanglement in strongly correlated electron systems



Osaka Metropolitan University

A new formula for calculating quantum entanglement entropy 

image: 

The simplified formula was developed to analyze local quantum entanglement in nanoscale materials.

view more 

Credit: Osaka Metropolitan University




Once described by Einstein as “spooky action at a distance,” quantum entanglement may now seem less intimidating in light of new research findings.

Osaka Metropolitan University physicists have developed new, simpler formulas to quantify quantum entanglement in strongly correlated electron systems and applied them to study several nanoscale materials. Their results offer fresh perspectives into quantum behaviors in materials with different physical characteristics, contributing to advances in quantum technologies.

Quantum entanglement is a unique phenomenon in which two particles, once connected, remain linked no matter how far apart they are in space. This fundamental feature plays a vital role in emerging technologies such as quantum computing and quantum cryptography.

Whilst significant progress has been made in understanding this so-called spooky phenomenon, scientists still find themselves tangled in its intricacies.

“Previous studies have largely focused on the universal properties of quantum entanglement in materials exhibiting magnetism or superconductivity,” said Yunori Nishikawa, a lecturer at Osaka Metropolitan University’s Graduate School of Science and lead author of the study.

The team, instead, went local: They zeroed in on quantum entanglement between one or two arbitrarily selected atoms within a strongly correlated electron system and their surrounding environment (the rest of the system).

Strongly correlated electron systems are materials in which electron-electron interactions dominate the system’s behavior, leading to rich, complex and often highly entangled quantum states. These systems serve as fertile grounds for exploring quantum entanglement.

The researchers derived formulas to calculate key quantum informative quantities, including entanglement entropy (which quantifies how entangled a system is), mutual information (which measures shared information between two parts of the system), and relative entropy (which gauges differences between quantum states). These quantities are critical for understanding how different parts of a quantum system interact with and influence each other.

“It was a pleasant surprise when we found that the formula* for entanglement entropy could be rendered in a surprisingly simple expression,” Nishikawa said.

To test their approach, the team applied their formulas to different material systems, including nanoscale artificial magnetic materials arranged in a linear chain and dilute magnetic alloys. Their analysis revealed counterintuitive patterns of quantum entanglement in the nanoscale artificial magnetic systems. In the dilute magnetic alloys, they successfully identified quantum relative entropy as a key quantity for capturing the Kondo effect, a phenomenon in which a magnetic impurity is screened by conduction electrons.

“The behavior of quantum entanglement in nanoscale artificial magnetic materials defied our initial expectations, opening new avenues for understanding quantum interactions,” Nishikawa said.

The study paves the way for deeper explorations of quantum entanglement that could drive advancements in quantum technologies.

“Our formulas can also be applied to systems with various other physical properties,” Nishikawa said. “We hope to inspire further research and provide new insights into quantum behaviors in different materials.”

 

*The formula to calculate entanglement entropy is as follows:

S=-­­­nn­log­­­nn-­­­hhlog­­­hh-­­­nhlog­­­­nh-­­­nhlog­­­nh

in which 𝑛, 𝑛 are the numbers of up- and down-spin electrons and h, h are the numbers of up and down holes (operators) within the target atom.

 

The study was published in Physical Review B.

###

About OMU 

Established in Osaka as one of the largest public universities in Japan, Osaka Metropolitan University is committed to shaping the future of society through “Convergence of Knowledge” and the promotion of world-class research. For more research news, visit https://www.omu.ac.jp/en/ and follow us on social media: XFacebookInstagramLinkedIn.

 

New research reveals how a 252 million year old climate crisis accompanied the ‘Great Dying’ mass extinction event, completely reorganizing the Earth’s ecosystems




By comparing climate models to fossil vegetation, scientists trace the remains of climate chaos following the Permian-Triassic mass extinction — including 10 degrees of global warming caused by CO2 emissions




Frontiers





The mass extinction that ended the Permian geological epoch, 252 million years ago, wiped out most animals living on Earth. Huge volcanoes erupted, releasing 100,000 billion metric tons of carbon dioxide into the atmosphere. This destabilized the climate and the carbon cycle, leading to dramatic global warming, deoxygenated oceans, and mass extinction. However, many plants survived, leaving behind fossils which scientists have used to model a dramatic 10 degree rise in global temperatures.

“While fossilized spores and pollen of plants from the Early Triassic do not provide strong evidence for a sudden and catastrophic biodiversity loss, both marine and terrestrial animals experienced the most severe mass extinction in Earth’s history,” explained Dr Maura Brunetti of the University of Geneva, lead author of the article in Frontiers in Earth Science. “Life on Earth had to adjust to repeated changes in climate and the carbon cycle for several million years after the Permian-Triassic Boundary.

“Our study links land plant macrofossil assemblages and numerical simulations describing possible climates from the late Permian to the early Triassic. We show that a shift from a cold climatic state to one with a mean surface air temperature approximately 10⁰C higher is consistent with changes in plant biomes.”

Climate crisis

The scientists studied five stages on either side of the Permian-Triassic Boundary: the Permian Wuchiapingian and Changhsingian, the early Triassic Induan and Olenekian, and the middle Triassic Anisian. They combined a map of Earth’s geography at that time with plant fossil data, assigning plant genera to six major biomes to estimate what the local climate looked like in different places based on the plants found there. Changes over time in the fossil record served as observational data to test the scientists’ climate models.

These biomes ranged from hot, humid ‘tropical everwet’ biomes, to seasonal tropical or temperate biomes and desert biomes. Different temperatures and COlevels favor different biomes. In cold temperature states, tropical latitudes feature desert, while at higher latitudes cold-temperate vegetation and tundra appear. Hot states feature temperate vegetation at polar latitudes and desert at equatorial latitudes. The more COis present, the warmer and wetter biomes are.

The seeds of recovery

The scientists then used statistical analysis to estimate the similarity between the existing plant fossil records and simulations of the biomes that would have flourished in different temperature states and COlevels. They found that these biomes changed dramatically at the Permian-Triassic Boundary, as the planet moved from a cold climate to a warm one.

The earliest periods, in the Permian, were cold, while the first period of the Triassic — the Induan — had a disturbed climate which the scientists couldn’t identify. This could be caused by sampling biases or poorer fossil preservation, or it could be due to short-term climate oscillations which didn’t allow biomes to stabilize. We need more fossil data to clarify this.

The later Triassic, however, was much hotter. The following periods — the Olenekian and Anisian — stabilized at temperatures 10 degrees higher than previously.

Heating up

“This transition from the colder climatic state to the hotter state is marked by an increase of approximately 10⁰C in the mean global surface air temperature and an intensification of the water cycle,” said Brunetti. “Tropical everwet and summerwet biomes emerged in the tropics, replacing predominantly desertic landscapes. Meanwhile, the warm-cool temperate biome shifted towards polar regions, leading to the complete disappearance of tundra ecosystems.”

“The shift in vegetation cover can be linked to tipping mechanisms between climatic steady states, providing a potential framework for understanding the transition between Permian and Triassic,” added Brunetti. “This framework can be used to understand tipping behavior in the climate system in response to the present-day CO2 increase. If this increase continues at the same rate, we will reach the level of emissions that caused the Permian-Triassic mass extinction in around 2,700 years — a much faster timescale than the Permian-Triassic Boundary emissions.”However, as with the climate of the Induan period, more data and more refined models are needed for clearer results.

“The comparison between simulated biomes and the dataset is influenced by uncertainties, arising from paleogeographic reconstructions and the classification of fossil assemblages into biomes,” cautioned Brunetti. “Furthermore, our climate modeling setup relies on offline coupling between models — the vegetation model uses the final outputs of the climatic model for biome reconstruction. This could be enhanced using a dynamic vegetation model.”