Saturday, November 09, 2024

PSYCO-SOCIAL HEALTH & WELLNESS

Grant to support new research to address alcohol-related partner violence among sexual minorities



Virginia Tech
Meagan Brem, assistant professor in the College of Science, received a two-year, $436,586 grant from the National Institute on Alcohol Abuse and Alcoholism. 

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Meagan Brem, assistant professor in the College of Science, received a two-year, $436,586 grant from the National Institute on Alcohol Abuse and Alcoholism.

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Credit: Photo by Becca Halm for Virginia Tech.




Navigating the intersection of alcohol use and intimate partner violence amongst young couples is not an easy journey, and for bisexual+ couples, the road may be even more winding.  

“No study has examined the extent to which alcohol use increases intimate personal violence among bisexual+ young adults or daily experiences unique to them. Our study will look at factors such as minority stressors that may lead to alcohol-related partner violence,” said Meagan Brem, director of the Research for Alcohol and Couple’s Health Lab at Virginia Tech.

Alcohol use and intimate partner violence - defined as any action in a romantic relationship including psychological, emotional, physical, and sexual partner-directed aggression - are as or more prevalent among bisexual+ couples than heterosexual couples, according to Brem, who is also assistant professor in the Department of Psychology. However, compared with other sexual identities, the research has largely neglected this population, which includes individuals who identify as multi-gender attracted, pansexual, and omnisexual individuals.

This critical gap will be addressed by Brem and her research team as the result of a new, two-year $436,586 grant from the National Institute on Alcohol Abuse and Alcoholism, which is part of the National Institutes of Health (NIH).  

Brem and her collaborators will collect daily data for 60 consecutive days from 50 bisexual+ couples and will characterize the day-to-day processes that contribute to alcohol-related intimate partner violence within this understudied priority population. They will then identify subpopulations within bisexual+ couples — including same- or different-gender dyads and couples in which both partners have minoritized sexual identities — to inform future alcohol-related intimate partner violence research.

“This study will be the first step in a line of research that will inform interventions tailored to bisexual+ young adults, a population vulnerable to heavy drinking and partner violence,” said Brem, who is the project’s principal investigator. “If bisexual+ minority stress increases the odds of alcohol-related intimate partner violence, but partner support mitigates these odds, intervention refinements could be developed and tested to ensure that bisexual+ individuals and their partners strengthen their coping strategies and partner support, particularly in response to sexual minority stressors.” 

Project collaborators include

“This research will also increase awareness of the unique challenges facing bisexual people and inform interventions to improve their health and wellbeing,” Feinstein said. “It’s incredible to see the NIH supporting research on bisexual health, and I’m grateful to Meagan for her leadership." 

The project is a result of Brem’s previous research contribution to the development of an integrated theory of sexual minority alcohol-related intimate partner violence. Pilot data collected to apply for this grant was made possible through Virginia Tech’s Dean’s Discovery Fund.

In that past work, Brem and colleagues proposed that greater sexual minority stress, such as harassment, stigma, and discrimination, creates a salient state of negative, provocative stimuli that when paired with the pharmacological effects of alcohol increases odds of intimate partner violence perpetration. However, their preliminary findings among individuals — rather than couples — did not support this theory, which then led them to focus on the ways in which partners within each couple support and validate each other in response to sexual minority stressors at the daily level.  

Becuase of the higher rates of alcohol use, intimate partner violence, and lack of research among bisexual+ couples, Brem and her team decided to specifically focus on this population and improve upon their previous methods by assessing daily exposure to sexual minority stress and partner support.  

The team will also be partnering with local and national LGBTQ+ agencies to make sure that the results reach those who can benefit the most from this work.  

“No bisexual+ specific intervention targets have been identified or incorporated into existing alcohol-related intimate partner violence interventions,” Brem said. “Our study will identify sorely needed intervention targets for this priority population to enhance the inclusivity of interventions.”

 

State divorce laws, reproductive care policies, and pregnancy-associated homicide rates



JAMA Network Open




About The Study: 

In this cross-sectional study of pregnancy-associated homicide rates, barriers to divorce were associated with higher homicide rates and access to reproductive health care was associated with lower homicide rates. This study highlights the association between state legislation and pregnancy-associated homicide in the U.S., which is important information for policymakers. 



Corresponding Author: To contact the corresponding author, Kaitlin M. Boyle, PhD, email kb49@mailbox.sc.edu.

To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/

(doi:10.1001/jamanetworkopen.2024.44199)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

#  #  #

Embed this link to provide your readers free access to the full-text article This link will be live at the embargo time http://jamanetwork.com/journals/jamanetworkopen/fullarticle/10.1001/jamanetworkopen.2024.44199?utm_source=For_The_Media&utm_medium=referral&utm_campaign=ftm_links&utm_term=110824

About JAMA Network Open: JAMA Network Open is an online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication. 

Catastrophic health expenditures for in-state and out-of-state abortion care


JAMA Network



About The Study:

 In this cross-sectional study of U.S. patients seeking abortion, many individuals and their households were estimated to incur catastrophic health expenditures, particularly those traveling from out of state. The financial and psychological burdens of abortion seeking have likely worsened after the Dobbs decision, as more people need to cross state lines to reach abortion care. The findings suggest expansion of insurance coverage to ensure equitable access to abortion care, irrespective of people’s state of residence, is needed.



Corresponding Author: To contact the corresponding author, Ortal Wasser, MSW, email ow345@nyu.edu.

To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/

(doi:10.1001/jamanetworkopen.2024.44146)

Editor’s Note: Please see the article for additional information, including other authors, author c

ontributions and affiliations, conflict of interest and financial disclosures, and funding and support.


Heat waves and adverse health events among dually eligible individuals 65 years and older


JAMA Health Forum



About The Study: 

In this time-series study, heat waves were associated with increased adverse health events among dually eligible individuals 65 years and older. Without adaptation strategies to address the health-related impacts of heat, dually eligible individuals are increasingly likely to face adverse outcomes. 


Corresponding Author: To contact the corresponding author, Hyunjee Kim, PhD, email kihy@ohsu.edu.

To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/

(doi:10.1001/jamahealthforum.2024.3884)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

#  #  #

Embed this link to provide your readers free access to the full-text article This link will be live at the embargo time https://jamanetwork.com/journals/jama-health-forum/fullarticle/10.1001/jamahealthforum.2024.3884?utm_source=For_The_Media&utm_medium=referral&utm_campaign=ftm_links&utm_term=110824

About JAMA Health Forum: JAMA Health Forum is an international, peer-reviewed, online, open access journal that addresses health policy and strategies affecting medicine, health and health care. The journal publishes original research, evidence-based reports and opinion about national and global health policy; innovative approaches to health care delivery; and health care economics, access, quality, safety, equity and reform. Its distribution will be solely digital and all content will be freely available for anyone to read.

 

Cleveland Clinic announces updated findings in preventive breast cancer vaccine study


Data presented at Society for Immunotherapy of Cancer Annual Meeting


Cleveland Clinic

Cleveland Clinic presents updated findings in preventative breast cancer vaccine study. 

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Cleveland Clinic researchers are presenting updated findings from their novel study of a vaccine aimed at preventing triple-negative breast cancer.

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Credit: Cleveland Clinic




November 8, 2024, CLEVELANDCleveland Clinic researchers are presenting updated findings from their novel study of a vaccine aimed at preventing triple-negative breast cancerthe most aggressive and lethal form of the disease.

 

The study team found that the investigational vaccine was generally well tolerated and produced an immune response in most patients. The team described the side effects of the vaccine, showed the highest tolerated dose to date, and presented the immunologic effects of the vaccine. Findings are being presented at the Society for Immunotherapy of Cancer Annual Meeting.

 

Launched in 2021 and funded by the U.S. Department of Defense, the ongoing clinical trial is evaluating safety and monitoring immune response of the vaccine. The phase 1 study, conducted at Cleveland Clinic’s main campus in partnership with Anixa Biosciences, Inc., has included 26 patients to date across three cohorts:

  • Phase 1a - patients who completed treatment for early-stage, triple-negative breast cancer within the past three years and are currently tumor-free but at high risk for recurrence.
  • Phase 1b - individuals who are cancer-free and at high risk for developing breast cancer who have elected to voluntarily have a preventative mastectomy to lower their risk. Primarily, these are women with BRCA1, BRCA2 and PALB2 mutations.
  • Phase 1c - patients with early-stage triple-negative breast cancer who have received preoperative chemoimmunotherapy and surgery, and are being treated with pembrolizumab following surgery. These patients have residual cancer in the breast tissue, making them at risk of recurrence.
     

Anixa is planning a phase 2 study to evaluate the efficacy of the vaccine. The trial is expected to begin in 2025 and is projected to last approximately two to three years.

 

“Triple-negative breast cancer is the form of the disease for which we have the least effective treatments,” said G. Thomas Budd, M.D., of Cleveland Clinic’s Cancer Institute and principal investigator of the phase 1 study. “Long term, we are hoping that this can be a true preventive vaccine that would be administered to individuals who are cancer-free to prevent them from developing this highly aggressive disease.”

 

According to Dr. Budd, there is a great need for improved treatments for triple-negative breast cancer, which does not have biological characteristics that typically respond to hormonal or targeted therapies. Despite representing only about 10-15% of all breast cancers, triple-negative breast cancer accounts for a disproportionately higher percentage of breast cancer deaths, according to American Cancer Society. It is twice as likely to occur in Black women, and approximately 70-80% of the breast tumors that occur in women with mutations in the BRCA1 gene are triple-negative breast cancer.

 

The investigational vaccine is based on pre-clinical research led by the late Vincent Tuohy, Ph.D., who was the Mort and Iris November Distinguished Chair in Innovative Breast Cancer Research at Cleveland Clinic’s Lerner Research Institute. Dr. Tuohy’s decades of groundbreaking research led to the development of this investigational vaccine. 

The vaccine targets a lactation protein, α-lactalbumin, which is no longer found after lactation in normal, aging breast tissues but is present in most triple-negative breast cancers. If breast cancer develops, the vaccine is designed to prompt the immune system to attack the tumor and keep it from growing. 

The study is based on Dr. Tuohy’s research that showed that activating the immune system against α-lactalbumin was safe and effective in preventing breast tumors in mice. The research, originally published in Nature Medicine, was funded in part by philanthropic gifts from more than 20,000 people over the last 12 years.

“It was Dr. Tuohy’s hope that this vaccine would demonstrate the potential of immunization as a new way to control breast cancer, and that a similar approach could someday be applied to other types of malignancy,” said Dr. Budd.

Anixa is the exclusive worldwide licensee of the novel breast cancer vaccine technology developed at Cleveland Clinic. Cleveland Clinic is entitled to royalties and other commercialization revenues from the company. 

For more information and eligibility requirements visit clinicaltrials.gov.

Faster measurement of response to antibiotic treatment in sepsis patients using Dimeric HNL



Uppsala University




The biomarker human neutrophil lipocalin HNL, which was previously shown to be a useful indicator of bacterial infections, may also in the form of Dimeric HNL be used to effectively monitor the success of antibiotic treatment in sepsis. The first promising results in this regard were published in 2019 and now the research group has confirmed these results in a larger study. The study is published in the journal PLOS ONE.

Sepsis, the costliest disease to health care, is a life-threatening condition with high mortality if not diagnosed and treated early and effectively. Mostly the cause is a bacterial infection. Thus, early and effective antibiotic treatment is lifesaving. The use of broad-spectrum antibiotics increases the likelihood of an effective treatment but may also add to the development of antibiotic resistance. The 2013 World Economic Forum classified antibiotic resistance as one of the biggest threats to global health. 1.27 million deaths were caused directly by antimicrobial resistance in 2019 and 13.66 million had sepsis as an immediate or intermediate cause of death. https://www.healthdata.org/research-analysis/health-risks-issues/antimicrobial-resistance-amr.


In a new study the scientists wanted to investigate if the use of HNL Dimer as a blood biomarker would be useful in the monitoring of antibiotic treatment of patients with sepsis and provide more reliable and faster response than the currently used biomarkers. 


The investigation was conducted on 277 patients admitted to the intensive care unit. Blood was drawn at admission and the next three consecutive days and later analysed in the laboratory. For comparison with HNL Dimer, several other blood biomarkers were analysed for the purpose of following their kinetics during successful antibiotic treatment. These were Procalcitonin, Heparin-Binding Protein and CRP (C-Reactive Protein) and are all highly elevated in blood in patients with bacterial infections such as sepsis. 


“The problem, however, with these biomarkers is that it often takes 4-5 days of successful treatment before any reduction in blood levels is seen. The levels of HNL Dimer are reduced much faster and often within a day of successful antibiotic treatment. Thus, by measuring HNL Dimer in blood in our patients we may gain important time savings of 3-4 days before we know the result of our antibiotic treatment” says Per Venge, MD and professor in Clinical Chemistry at the University of Uppsala in Sweden and who has conducted research for many years on Human Neutrophil Lipocalin as a biomarker of disease.


The assay of HNL Dimer is developed in close collaboration between Uppsala University and the company Diagnostics Development in Uppsala.

 

 SOCIOBIOLOGY

Scarlet Macaw parents ‘play favorites,’ purposefully neglect younger chicks



Researchers at Texas A&M University have come to the rescue with a “foster program” for neglected chicks.



Texas A&M University





Scarlet macaws are a symbol of fidelity and virtue to many people because they are thought to mate for life — but it turns out that they also “play favorites” when feeding their young, making them excellent mates, but neglectful parents.

Fortunately, Texas A&M scientists have developed a way to ensure the birds’ bad parenting results in fewer chick deaths.  

Researchers at the College of Veterinary Medicine and Biomedical Sciences have discovered that scarlet macaws purposefully neglect feeding the youngest chicks in most broods, even when resources are plentiful. This results in only one or two chicks being able to fledge — the process in which parents teach their young to fly and survive on their own — even though broods may contain up to four chicks.

“Scientists have known for years that scarlet macaws hatch more chicks than they fledge,” said Dr. Donald Brightsmith, a professor in the VMBS’ Department of Veterinary Pathobiology. “We found that 26% of second chicks in scarlet macaw broods and nearly all third and fourth chicks die before fledging.

“We tested several theories as to why these younger chicks don’t survive, and we found that it’s not sibling rivalry or a lack of food. The parents just stop feeding certain chicks, so they starve to death,” he said.

The deciding factor appears to be the difference in chick ages.

“Scarlet macaws lay eggs over a period of several days instead of all at once, which means the chicks don’t hatch on the same day,” said Dr. Gabriela Vigo-Trauco, a post-doctoral researcher with the Schubot Center for Avian Health, who led the project. “If the second chick hatches only a couple of days after the first, there is a good chance that the parents will feed it. However, if it hatches four, five, or more days after the first chick, the parents will probably neglect it and let it die.”

The researchers, who recently published their study in the journal Diversity, suspect that when chicks are young and hatch four or more days apart, they begin to need different types of parental care. For example, some chicks need feeding while others are still incubating, which contributes to the high rates of neglect and starvation. 

Armed with this knowledge, the team has developed a method to save neglected chicks by giving them macaw “foster parents.”

“Thankfully, scarlet macaws are not endangered or threatened, but there are many parrot species that are,” Brightsmith said. “We hope that this foster program will be used to help save the populations of endangered parrot species.”

Understanding Brood Reduction

Brood reduction, or eliminating chicks after they hatch, is a common practice among birds.

“Some species of seabirds, like boobies, gulls, and pelicans, have a high degree of sibling rivalry that can lead to death,” Vigo-Trauco said. “Eagles, falcons and other species are known to attack and kill their own chicks. Often, parents target the smaller chicks, which are usually younger.”

For scarlet macaws, starvation is the cause of 45% of all chick deaths; chicks that hatch third or fourth in a brood always die.

“We wanted to understand what was causing 26% of second chicks to die of starvation,” Brightsmith said. “Scientists often point the finger at a lack of resources in the environment, but if it’s about conserving resources, then why do scarlet macaws lay so many eggs?”

To rule out lack of resources, Gustavo Martinez, a member of the research team, marked and monitored trees to estimate the amount of fruit — scarlet macaws’ main source of food — in the forests of the Tambopata National Reserve in Peru where the study was conducted. 

“Once a month for several years, he would go out and check about 1,300 trees for fruit and flowers,” Brightsmith said. “Looking at the data, we can tell that there were times when food scarcity forced macaws to forgo breeding for a season, but we couldn’t find any association with chick starvation.” 

Catching Macaws In The Act

To see what was happening in scarlet macaw nests, the researchers installed cameras in nest boxes at the Tambopata National Reserve in Peru. For 10 years, they captured video segments showing what was happening to the chicks. 

They also accessed the nests and manually checked which chicks had received food, which was how they determined that some chicks were intentionally being starved.

“Scarlet macaws have a food sac on their necks called a crop, and in chicks it’s very easy to see when it’s full of food,” Brightsmith said. “We caught video of female macaws trying to over-feed their oldest chicks while the third chick would be running slowly around the base of the nest with an empty crop, begging for food.  

“What’s more, the chicks at that age can’t regulate their own body temperature, so they need to be in the nest. We saw that the mother won’t even share her body heat with her dying offspring,” he said. “As scientists, we try not to do what’s called anthropomorphizing — attaching human ideas about morality to animals. But it’s hard to watch that and not think of it as parental abuse.”

The “abusive behavior” goes even further — but it seems that macaw parents aren’t always on the same page.

“Sometimes the female macaw will start to bury a chick that she’s decided not to feed by kicking nest substrate on top of it,” Brightsmith said. “But then the father will come home and unbury the chick and feed it. So, they’re not always in agreement, which makes the whole process even more complex.”

Saving Neglected Chicks

While scarlet macaws have some questionable parenting techniques for their own hatchlings, the good news is they also make excellent foster families for neglected chicks.

As part of her doctoral research, Vigo-Trauco developed a program for saving neglected chicks. The chicks are raised in captivity for a few weeks before being placed in the nests of macaws with chicks at a similar developmental stage or that have lost all their chicks to predation.

The program effectively eliminates the need for different types of parental care and allows the foster parents to raise chicks that would have starved. 

“The key to success is making sure that the chicks all look about the same size,” she said. “This encourages the new parents to take care of the foster chick as if it were their own.”

While the macaws seem to notice that something is different, that doesn’t stop them from adopting the foster chick.

“We see them on camera as they land on the nest box, look in, and then look around like they’re thinking, ‘Did I walk into the wrong house?’ It’s kind of hilarious,” Brightsmith said. “They turn their heads sideways to get a good look at the new chick, think about it for a moment, and then start to feed them.”

The foster chick program, published in Diversity in 2021, successfully re-homed 28 chicks over the course of three breeding seasons. 

“Parrots are one of the most endangered groups of birds in the world,” Brightsmith said. “We hope that this program, and the understanding of brood reduction behind it, can assist with the conservation of a broad array of parrot species across the tropics.”

By Courtney Price, College of Veterinary Medicine and Biomedical Sciences

SPAGYRIC HERBALISM

Exploring the systematic anticancer mechanism in selected medicinal plants





Xia & He Publishing Inc.




Cancer remains one of the leading global causes of mortality, with an estimated increase in cases due to lifestyle, environmental, and genetic factors. Despite advancements in treatment, cancer's complexity and the side effects of conventional therapies necessitate alternative approaches. Medicinal plants, long valued for their therapeutic properties, have shown promise in cancer treatment, attributed to their natural phytoconstituents. This review focuses on the anticancer mechanisms of specific medicinal plants and discusses their potential for future therapeutic development.

Anticancer Mechanisms of Selected Medicinal Plants

Medicinal plants exert anticancer effects through multiple pathways, including cell cycle arrest, apoptosis induction, and disruption of signaling cascades. The mechanisms employed by each plant’s bioactive compounds are varied:

  1. Oroxylum indicum - Known for its anti-inflammatory and immunomodulatory effects, its extract has been shown to inhibit cancer progression through the PI3K/AKT signaling pathway and induce apoptosis in oral carcinoma models.
  2. Musa paradisiaca (Banana) - This plant’s bioactive compounds, particularly banana lectin, promote apoptosis in cancer cells and arrest the cell cycle at G2/M, indicating a potent anticancer potential.
  3. Colchicum autumnale - Colchicine from this plant disrupts microtubule formation, inducing apoptosis and impeding cell division in various cancer cell lines. However, its high toxicity limits its direct clinical application, though modifications are being explored to reduce this toxicity.
  4. Catharanthus roseus - The alkaloids vincristine and vinblastine derived from this plant are well-known for their anticancer activities, particularly through the inhibition of microtubule dynamics, which leads to cell cycle arrest and apoptosis in cancer cells.
  5. Psidium guajava (Guava) - This plant has shown efficacy in inhibiting the AKT/mTOR signaling pathway, which is crucial in cancer cell survival and proliferation.
  6. Mangifera indica (Mango) - Mango extracts have been found to influence cancer cell survival by modulating the PI3K/AKT pathway, AMPK signaling, and NF-κB pathway, all of which are associated with cancer progression.
  7. Lagerstroemia speciosa (Banaba) - Its ethanol extracts have demonstrated cytotoxic effects in liver cancer cells by inducing apoptosis and cell cycle arrest.
  8. Moringa oleifera - This plant’s extracts induce apoptosis by enhancing p53 expression, a key tumor suppressor protein, and causing G2/M cell cycle arrest, making it a promising candidate for cancer therapy.

Current Development and Future Perspectives

The potential of medicinal plants in cancer therapy is growing, with current research focusing on isolating active phytoconstituents, understanding their mechanisms, and developing drug delivery systems. However, challenges include variability in phytoconstituent concentration due to environmental factors and potential toxicity from heavy metal contamination. Collaborative efforts among researchers, clinicians, and industry stakeholders are essential to integrate medicinal plants into mainstream cancer therapy.

Limitations

While medicinal plants offer promising alternatives, some limitations persist. Variability in plant composition and concerns over environmental contamination highlight the need for rigorous standardization in phytoconstituent extraction and testing.

In conclusion, medicinal plants with anticancer properties hold significant promise as alternatives or adjuncts to conventional therapies, particularly in their ability to target specific cellular pathways and reduce treatment side effects.

Full text

https://www.xiahepublishing.com/2996-3427/OnA-2024-00012

 

The study was recently published in the Oncology Advances.

Oncology Advances is dedicated to improving the diagnosis and treatment of human malignancies, advancing the understanding of molecular mechanisms underlying oncogenesis, and promoting translation from bench to bedside of oncological sciences. The aim of Oncology Advances is to publish peer-reviewed, high-quality articles in all aspects of translational and clinical studies on human cancers, as well as cutting-edge preclinical and clinical research of novel cancer therapies.

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Stabilizing lithium-ion batteries: The vanadium touch



Tsinghua University Press
Vanadium-Doped Li-rich Cathode Enhances Voltage Stability and Capacity 

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The schematic shows the NH4VO3 treatment forming V-O bonds on a lithium-rich cathode surface, creating a V-doped spinel-layered structure. This innovation significantly improves voltage stability and boosts battery capacity, as demonstrated in the graph showing consistent performance over 200 cycles.

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Credit: Energy Materials and Devices, Tsinghua University Press




As demand surges for electric vehicles and energy storage systems, lithium-ion batteries need to deliver higher energy densities at lower costs. While conventional cathode materials like LiFePO4 and Li-Ni-Co-Mn-O are widely used, they often fail to balance performance with affordability. Lithium-rich manganese oxides (LRMOs) have emerged as a potential alternative due to their high capacity and cobalt-free composition. However, their low initial Coulombic efficiency and rapid voltage decay have limited their broader application. Addressing these challenges requires deeper research to stabilize LRMOs for widespread commercial use.

In September, 2024, a team from Guangdong University of Technology, led by Dong Luo and Chenyu Liu, published a study (DOI: 10.26599/EMD.2024.9370039) in Energy Materials and Devices. that marks a significant advancement in lithium-ion battery technology. Their research demonstrates how treating lithium-rich cathode materials with NH4VO3 results in a vanadium-doped spinel-layered structure that enhances both initial Coulombic efficiency and voltage stability. This simple yet effective modification represents a major step toward improving the sustainability and performance of high-energy lithium-ion batteries.

The study addresses two long-standing issues in LRMO cathodes: low initial Coulombic efficiency (ICE) and rapid voltage decay. The research team employed a hydrothermal treatment using NH4VO3, which introduced vanadium to the cathode surface, forming a V-doped spinel-layered structure. This innovative structure improved lithium-ion diffusion and reduced surface interface reactions, thereby stabilizing the oxygen redox process. Notably, the ICE jumped from 74.4% to 91.6%, surpassing the threshold required for commercialization. In addition to the significant boost in efficiency, the cathode also demonstrated impressive voltage stability, with a minimal decay of only 0.47 mV per cycle over 200 cycles. This improvement is linked to the suppression of irreversible oxygen release and the formation of strong V-O bonds, which reinforce the material’s structural stability. By addressing these critical challenges, the study highlights a promising approach to enhancing the performance and lifespan of LRMO cathodes, making them more suitable for high-energy applications.

Commenting on the research, lead scientist Professor Dong Luo stated, "Our findings offer a practical and highly effective method for tackling the persistent challenges of low Coulombic efficiency and voltage decay in lithium-rich cathodes. By incorporating vanadium, we’ve significantly improved redox stability and voltage performance, paving the way for next-generation lithium-ion batteries to meet the growing energy needs of sectors like electric vehicles and renewable energy storage."

The V-doped lithium-rich cathode holds strong potential for applications in electric vehicles, renewable energy systems, and consumer electronics, where battery efficiency and longevity are paramount. The improved efficiency and stability not only promise to lower costs by eliminating cobalt but also enhance overall battery performance. As this technology scales, it could lead to more affordable and sustainable energy solutions, accelerating the global shift towards cleaner, more efficient power sources.

 


About Energy Materials and Devices

Energy Materials and Devices is launched by Tsinghua University, published quarterly by Tsinghua University Press, exclusively available via SciOpen, aiming at being an international, single-blind peer-reviewed, open-access and interdisciplinary journal in the cutting-edge field of energy materials and devices. It focuses on the innovation research of the whole chain of basic research, technological innovation, achievement transformation and industrialization in the field of energy materials and devices, and publishes original, leading and forward-looking research results, including but not limited to the materials design, synthesis, integration, assembly and characterization of devices for energy storage and conversion etc.

About SciOpen 

SciOpen is an open access resource of scientific and technical content published by Tsinghua University Press and its publishing partners. SciOpen provides end-to-end services across manuscript submission, peer review, content hosting, analytics, identity management, and expert advice to ensure each journal’s development. By digitalizing the publishing process, SciOpen widens the reach, deepens the impact, and accelerates the exchange of ideas.

 

Beyond deep learning: Advancing affective computing with diverse AI methodologies




Intelligent Computing
A schematic diagram of the envisioned next generation of affective computing. 

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A schematic diagram of the envisioned next generation of affective computing.

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Credit: Andreas Triantafyllopoulos et al.




Affective computing, a field focused on understanding and emulating human emotions, has seen significant advancements thanks to deep learning. However, researchers at the Technical University of Munich caution that an over-reliance on deep learning may hinder progress by overlooking other emerging trends in artificial intelligence. Their review, published Sep. 16 in Intelligent Computing, a Science Partner Journal, advocate using a variety of AI methodologies to tackle ongoing challenges in affective computing.

Affective computing uses various signals, such as facial expressions, voice and language cues, alongside physiological signals and wearable sensors to analyze and synthesize affect. While deep learning has significantly improved tasks like emotion recognition through innovations in transfer learning, self-supervised learning and transformer architectures, it also presents challenges, including poor generalization, cultural adaptability issues and a lack of interpretability.

To address these limitations, the authors outline a comprehensive framework for developing embodied agents capable of interacting with multiple users in many different contexts. A key to this vision is the assessment of users’ goals, mental states and interrelationships for the purpose of facilitating longer interactions. The authors recommend integrating the following nine components, which they describe in detail, to improve human-agent interactions:

1. Graphs that map user relationships and context.

2. Capsules that model hierarchies for understanding affective interactions.

3. Neurosymbolic Engines that facilitate reasoning about interactions using affective primitives.

4. Symbols that establish common knowledge and rules for interaction.

5. Embodiment that enables collaborative learning in constrained environments.

6. Personalization that tailors interactions to individual user characteristics.

7. Generative AI that creates responses across multiple modalities.

8. Causal models that differentiate causes and effects for higher-order reasoning.

9. Spiking neural networks that enhance deployment of deep neural networks in resource-limited settings.

The authors also describe several next-generation neural networks, resurgent themes and new frontiers in affective computing.

Next-generation neural networks are advancing beyond traditional deep learning models to address limitations in capturing complex data structures, spatial relationships and energy efficiency. Capsule networks enhance convolutional networks by preserving spatial hierarchies, improving the modeling of complex entities, such as human body parts, which is vital in healthcare and emotion recognition. Geometric deep learning extends deep learning to non-Euclidean structures, allowing for a better understanding of complex data interactions. It has been particularly useful in sentiment and facial analysis. Mimicking the threshold-based firing of biological neurons, spiking neural networks offer a more energy-efficient alternative for real-time applications, making them suitable for environments with limited resources.

Traditional AI concepts, adapted to new contexts, can improve affective computing applications. Neurosymbolic systems show particular promise, combining the pattern recognition of deep learning with symbolic reasoning from traditional AI to improve the explainability and robustness of deep learning models. As these models enter real-world settings, they must conform to social norms, enhancing their ability to interpret emotions across cultures. Embodied cognition furthers this goal by situating AI agents in physical or simulated contexts, supporting natural interactions. Through reinforcement learning, embodied agents can achieve better situatedness and interactivity, which is especially beneficial in complex fields such as healthcare and education.

In addition, three substantial ideas have emerged in affective computing in recent years: generative models, personalization, and causal reasoning. Advances in generative models, especially diffusion-based processes, enable AI to produce contextually relevant emotional expressions across various media, paving the way for interactive, embodied agents. Moving beyond one-size-fits-all models, personalization adapts responses based on user personalized characteristics while maintaining data privacy through federated learning. By incorporating causal reasoning, affective computing systems can not only associate but also intervene and counterfactualize in emotional contexts, enhancing their adaptability and transparency.

The future of affective computing could hinge on combining innovation and a variety of AI methodologies. Moving beyond a deep learning-centric approach could pave the way for more sophisticated, culturally aware, and ethically designed systems. The integration of multiple approaches promises a future where technology not only understands but also enriches human emotions, marking a significant leap towards truly intelligent and empathetic AI.

 

Watch this elephant turn a hose into a sophisticated showering tool




Cell Press

Elephant water hose tool use 

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This is a video abstract for the 2024 Current Biology paper on elephant water hose tool use.

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Credit: Urban et al./Current Biology



Tool use isn’t unique to humans. Chimpanzees use sticks as tools. Dolphins, crows, and elephants are known for their tool-use abilities, too. Now a report in the Cell Press journal Current Biology on November 8, 2024, highlights elephants’ remarkable skill in using a hose as a flexible shower head. As an unexpected bonus, researchers say they also have evidence that a fellow elephant knows how to turn the water off, perhaps as a kind of “prank.”

“Elephants are amazing with hoses,” says Michael Brecht of the Humboldt University of Berlin, one of the senior authors. “As it is often the case with elephants, hose tool use behaviors come out very differently from animal to animal; elephant Mary is the queen of showering.”

The researchers made the discovery after the paper’s other senior author Lena Kaufmann (@lena_v_kaufmann), also of Humbolt University of Berlin, witnessed the Asian elephant Mary at the Berlin Zoo showering one day and captured it on film. She took it back to her colleagues who were immediately impressed. First study author Lea Urban decided to analyze the behavior in more detail.

“I had not thought about hoses as tools much before, but what came out from Lea's work is that elephants have an exquisite understanding of these tools,” Brecht says.

The researchers found that Mary systematically showers her body, coordinating the water hose with her limbs. She usually grasps the hose behind its tip to use it as a stiff shower head. To reach her back, she switches to a lasso strategy, grasping the hose farther up and swinging it over her body. When presented with a larger and heavier hose, Mary used her trunk to wash instead of the bulkier and less useful hose.

The researchers say that the findings offer a new example of goal-directed tool use. But what surprised them most was the way fellow Asian elephant Anchali reacted during Mary’s showering.

The two elephants showed aggressive interactions around showering time, the researchers say. At one point, Anchali started pulling the hose toward herself and away from Mary, lifting and kinking it to disrupt water flow. While they can’t be sure of Anchali’s intentions, it looked a lot like the elephant was displaying a kind of second order tool use behavior, disabling a tool in more conventional use by a fellow elephant, perhaps as an act of sabotage.

“The surprise was certainly Anchali's kink-and-clamp behavior,” Brecht says. “Nobody had thought that she'd be smart enough to pull off such a trick.”

In fact, he reports plenty of debate in the lab about Anchali’s behavior and what it meant. Then, they saw Anchali find another way to disrupt Mary’s shower. In this case, Anchali did what the researchers refer to as a trunkstand to stop the water flow. For this feat, Anchali places her trunk on the hose and then lowers her massive body onto it.

Brecht explains that the elephants are well trained not to step on hoses, lest the keepers scold them. As a result, he says, they almost never do that. The researchers suspect that’s why Anchali has come up with more challenging workarounds to stop the water from flowing during Mary’s showers.

“When Anchali came up with a second behavior that disrupted water flow to Mary, I became pretty convinced that she is trying to sabotage Mary,” Brecht said.

The findings come as a reminder of elephants’ extraordinary manipulative skill and tool use, made possible by the grasping ability of their trunks. The researchers say they now wonder what the findings in zoo elephants mean for elephants in their natural environments.

“Do elephants play tricks on each other in the wild?” Brecht asked. “When I saw Anchali's kink and clamp for the first time, I broke out in laughter. So, I wonder, does Anchali also think this is funny, or is she just being mean?”

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This research was funded by the European Research Council.

Current Biology, Urban et al.: “Water-hose tool use and showering behavior by Asian elephants.” https://www.cell.com/current-biology/fulltext/S0960-9822(24)01371-X 

Current Biology (@CurrentBiology), published by Cell Press, is a bimonthly journal that features papers across all areas of biology. Current Biology strives to foster communication across fields of biology, both by publishing important findings of general interest and through highly accessible front matter for non-specialists. Visit: http://www.cell.com/current-biology. To receive Cell Press media alerts, contact press@cell.com.

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Chimpanzees perform better on challenging computer tasks when they have an audience



Cell Press
Chimpanzee Pal doing task type 3 

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Chimpanzee Pal doing task type 3

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Credit: Akiho Muramatsu




When people have an audience watching them, it can change their performance for better or worse. Now, researchers reporting in the Cell Press journal iScience on November 8 have found that chimpanzees’ performance on computer tasks is influenced by the number of people watching them. The findings suggest that this “audience effect” predates the development of reputation-based human societies, the researchers say.

“It was very surprising to find that chimpanzees are affected in their task performance by audience members, and by human audience members nonetheless!” says Christen Lin of Kyoto University in Japan. “One might not expect a chimp to particularly care if another species is watching them perform a task, but the fact that they seem to be affected by human audiences even depending on the difficulty of the task suggests that this relationship is more complex than we would have initially expected.”

The researchers, including Shinya Yamamoto and Akiho Muramatsu, wanted to find out if the audience effect, often attributed in humans to reputation management, might also exist in a non-human primate. People, they knew, pay attention to who is watching them, sometimes even subconsciously, in ways that affect their performance. While chimps live in hierarchical societies, it wasn’t clear to what extent they, too, might be influenced by those watching them.

“Our study site is special in that chimpanzees frequently interact with and even enjoy the company of humans here, participating almost daily in various touch screen experiments for food rewards,” Muramatsu says. “As such, we saw the opportunity to not only explore potential similarities in audience-related effects but also to do so in the context of chimps that share unique bonds with humans.”

The researchers made the discovery after analyzing thousands of sessions in which chimpanzees completed a touch screen task over six years. They found in three different number-based tasks that chimpanzees performed better on the most difficult task as the number of experimenters watching them increased. In contrast, they also found that, for the easiest task, chimpanzees performed worse when being watched by more experimenters or other familiar people.

The researchers note that it remains unclear what specific mechanisms underlie these audience-related effects, even for humans. They suggest that further study in non-human apes may offer more insight into how this trait evolved and why it developed.

“Our findings suggest that how much humans care about witnesses and audience members may not be quite so specific to our species,” Yamamoto says. “These characteristics are a core part of how our societies are largely based on reputation, and if chimpanzees also pay special attention towards audience members while they perform their tasks, it stands to reason that these audience-based characteristics could have evolved before reputation-based societies emerged in our great ape lineage.”

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iScience, Lin et al. “Audience presence influences cognitive task performance in chimpanzees” https://cell.com/iscience/fulltext/S2589-0042(24)02416-7

iScience (@iScience_CP) is an open access journal from Cell Press that provides a platform for original research and interdisciplinary thinking in the life, physical, and earth sciences. The primary criterion for publication in iScience is a significant contribution to a relevant field combined with robust results and underlying methodology. Visit https://www.cell.com/iscience. To receive Cell Press media alerts, contact press@cell.com