PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

How can we use neutrinos to probe dark matter in the sun?

Measuring the sun's core temperature

2010-09-09
(Press-News.org) The existence of Dark Matter particles in the Sun's interior seems inevitable, despite dark matter never having been observed (there or elsewhere), despite intensive ongoing searches. Once gravitationally captured by the Sun, these particles tend to accumulate in its core. In a paper to be published in the scientific journal " Science", Dr. Ilidio Lopes and Professor Joseph Silk propose that the presence of dark matter in the Sun's interior causes a significant drop in its central temperature. Their calculations have shown that, in some dark matter scenarios, an isothermal solar core (constant temperature) is formed. The authors suggest that the neutrino detectors will be able to measure these types of effects. In another paper published in "The Astrophysical Journal Letters", the same authors suggest that, through the detection of gravity waves produced in the Sun's interior (identical to internal sea waves), Helioseismology can also independently confirm the presence of Dark Matter in the Sun. Current detectors of solar neutrinos, Borexino and "Sudbury Neutrino Observatory" (SNO), as well as those currently being built, will be able to measure with precision the temperature in the Sun's interior. In particular, SNO is a Canadian experiment which also has European and American support. Portugal participates in the SNO and SNO+ experiments through the "Laboratório de Instrumentação e Partículas (LIP)". The development of Helioseismology has been fundamental for increasing our scientific understanding of the Sun. The experiment Global Oscillation Low-degree Modes (GOLF) detector on the SoHO satellite seems to have identified gravity waves in the Sun for the first time. Future experiments in Helioseismology will be able to confirm these results.

INFORMATION:

END



ELSE PRESS RELEASES FROM THIS DATE:

Study finds most Oregon hospices do not fully participate in the Death with Dignity Act

2010-09-09
A survey in the latest issue of the Hastings Center Report found that most hospices in Oregon, the first state to legalize physician-assistance in dying, either do not participate in or have limited participation in requests for such assistance. Both legal and moral reasons are identified. This finding is significant because hospices are considered important for assuring that physician-assisted death is carried out responsibly, write the authors, Courtney S. Campbell, the Hundere Professor of Religion and Culture at Oregon State University, and Jessica C. Cox, the Hundere ...

Economics of Ecosystems and Biodiversity for Local and Regional Policy Makers report launched at major biodiversity conference in Ghent

Economics of Ecosystems and Biodiversity for Local and Regional Policy Makers report launched at major biodiversity conference in Ghent
2010-09-09
Ghent, 9 September 2010 – Factoring the planet's multi-trillion dollar ecosystem services into policy-making can help save cities and regional authorities money while boosting the local economy, enhancing quality of life, securing livelihoods and generating employment. This is the finding from a major international study, launched in a report by TEEB for Local and Regional Policy Makers, being released in Belgium, Brazil, India, Japan and South Africa. In the Framework of the Belgian Presidency of the European Union, the Flemish Ministry of Environment, Nature and ...

New treatment options target underlying causes of childhood obsessive-compulsive and Tourette's disorders

2010-09-09
New Rochelle, NY, September 8, 2010—Pediatric-onset obsessive compulsive disorder (OCD) and Tourette's disorder (TD) share similarities in their underlying genetic and environmental factors, psychiatric features, and treatment methods. Advances in understanding the neurobiological basis of these disorders and discovering new and more effective therapies are highlighted in a special issue on OCD and TD in Journal of Child and Adolescent Psychopharmacology, a peer-reviewed journal published by Mary Ann Liebert, Inc. (www.liebertpub.com). The entire issue is available free ...

UC Davis study finds low liver cancer survival rates among Laotian/Hmong-Americans

2010-09-09
(SACRAMENTO, Calif.) — Among Asian-Americans living in California, Laotian/Hmong-Americans have the lowest survival rates for the most common type of liver cancer, a new study by researchers with the UC Davis School of Medicine has found. The study, the largest population-based examination of liver cancer rates among Asian-Americans, highlights a profound disparity that calls for targeted outreach to detect and treat the disease earlier among Laotian/Hmong-Americans, said Moon Chen Jr., a professor of hematology and oncology in the UC Davis School of Medicine. "We ...

Investigators discover a new hot spot for the genesis of signaling neurons in the adult brain

2010-09-09
(SACRAMENTO, Calif.) — In an unanticipated finding, researchers at the UC Davis School of Medicine have discovered that, during early adulthood, the brain produces new excitatory neurons, and that these neurons arise from non-neuronal support cells in an area of the brain that processes smell. The study, conducted in mice, is the first to demonstrate that pyramidal neurons in the mature brain stem are generated by precursors of glial cells — non-neuronal support cells — and that these new neurons likely are capable of transmitting information to widespread regions of ...

Simplified clinical tool affects treatment decisions for heart health

2010-09-09
The widespread use of a simplified clinical tool to estimate future coronary risk could lead to the classification of millions of Americans into different risk groups than when using the original, "gold-standard" tool. Millions of patients may have been misclassified into higher-risk groups and therefore potentially over-treated, while others may have ended up in lower-risk groups and therefore potentially under-treated for heart disease. The study¹, led by William Gordon from Weill Cornell Medical College in the US and colleagues, is published in the Journal of General ...

Simplified heart-risk guideline may miscalculate risk for millions

2010-09-09
A method that is widely used to predict the risk of a major coronary event may over- or underestimate risk for millions of Americans, according to a study directed by a researcher at the San Francisco VA Medical Center and the University of California, San Francisco. The method in question is the simplified version of the so-called Framingham model, which is used to estimate a patient's 10-year risk of a heart attack, stroke, or other coronary event based on risk factors such as age, cholesterol levels, blood pressure, and smoking. National guidelines recommend using ...

Joint replacement: Does this look infected to you?

2010-09-09
Rosemont, Ill. – The American Academy of Orthopaedic Surgeons (AAOS) recently approved and released an evidence-based clinical practice guideline on the diagnosis of periprosthetic joint infections of the hip and knee. Clinical practice guidelines are one avenue the Academy uses to ensure that patients receive high quality care. A periprosthetic joint infection occurs when bacteria or other foreign organisms enter the wound during or at any point following joint replacement surgery, sometimes even years after surgery. An infection can cause the joint to be painful or cause ...

A tectonic zip

2010-09-09
The complex fracture pattern created by the earthquake in Concepción (Chile) on 27 February 2010 was to a certain extent predictable. GPS observations from the years before the earthquake showed the pattern of stresses that had accumulated through the plate movements during the past 175 years in this area. The stress distribution derived from the observations correlates highly with the subsequent fracture distribution. In all likelihood the tremor removed all the stress that had accumulated since the last earthquake in this region, which was observed by Charles Darwin in ...

Aging drug users are increasing and facing chronic physical and mental health problems

2010-09-09
Health and social services are facing a new challenge, as many illicit drug users get older and face chronic health problems and a reduced quality of life. That is one of the key findings of research published in the September issue of the Journal of Advanced Nursing. UK researchers interviewed eleven people aged 49 to 61 in contact with voluntary sector drug treatment services. "This exploratory study, together with our wider research, suggest that older people who continue to use problematic or illegal drugs are emerging as an important, but relatively under-researched, ...

LAST 30 PRESS RELEASES:

New way to find “aged” cells marks fresh approach for research into ageing

From blood sugar to brain relief: GLP-1 therapy slashes migraine frequency

Variability in heart rate during sleep may reveal early signs of stroke, depression or cognitive dysfunction, new study shows

New method to study catalysts could lead to better batteries

Current Molecular Pharmacology impact factor rises to 2.9, achieving Q2 ranking in the Pharmacology & Pharmacy category in 2024 JCR

More time with loved ones for cancer patients spared radiation treatment

New methods speed diagnosis of rare genetic disease

Genetics of cardiomyopathy risk in cancer survivors differ by age of onset

Autism inpatient collection releases genetic, phenotypic data for more than 1,500 children with autism

Targeting fusion protein’s role in childhood leukemia produces striking results

Clear understanding of social connections propels strivers up the social ladder

New research reveals why acute and chronic pain are so different – and what might make pain last

Stable cooling fostered life, rapid warming brought death: scientists use high-resolution fusuline data reveal evolutionary responses to cooling and warming

New research casts doubt on ancient drying of northern Africa’s climate

Study identifies umbilical cord blood biomarkers of early onset sepsis in preterm newborns

AI development: seeking consistency in logical structures

Want better sleep for your tween? Start with their screens

Cancer burden in neighborhoods with greater racial diversity and environmental burden

Alzheimer disease in breast cancer survivors

New method revolutionizes beta-blocker production process

Mechanism behind life-threatening cancer drug side-effect revealed

Weighted vests might help older adults meet weight loss goals, but solution for corresponding bone loss still elusive

Scientists find new way to predict how bowel cancer drugs will stop working – paving the way for smarter treatments

Breast cancer patients’ microbiome may hold key to avoiding damaging heart side-effects of cancer therapies

Exercise-induced protein revives aging muscles and bones

American College of Cardiology issues guidance on weight management drugs

Understanding the effect of bedding on thermal insulation during sleep

Cosmic signal from the very early universe will help astronomers detect the first stars

With AI, researchers find increasing immune evasion in H5N1

Study finds hidden effects of wildfires on water systems

[Press-News.org] How can we use neutrinos to probe dark matter in the sun?
Measuring the sun's core temperature